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notepad-plus-plus/scintilla/win32/ScintillaWin.cxx

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// Scintilla source code edit control
/** @file ScintillaWin.cxx
** Windows specific subclass of ScintillaBase.
**/
// Copyright 1998-2003 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#include <cstddef>
#include <cstdlib>
#include <cstdint>
#include <cassert>
#include <cstring>
#include <cstdio>
#include <cmath>
#include <climits>
#include <stdexcept>
#include <new>
#include <string>
#include <string_view>
#include <vector>
#include <map>
#include <set>
#include <optional>
#include <algorithm>
#include <memory>
#include <chrono>
#include <mutex>
// Want to use std::min and std::max so don't want Windows.h version of min and max
#if !defined(NOMINMAX)
#define NOMINMAX
#endif
#undef _WIN32_WINNT
#define _WIN32_WINNT 0x0A00
#undef WINVER
#define WINVER 0x0A00
#define WIN32_LEAN_AND_MEAN 1
#include <windows.h>
#include <commctrl.h>
#include <richedit.h>
#include <windowsx.h>
#include <zmouse.h>
#include <ole2.h>
#if !defined(DISABLE_D2D)
#define USE_D2D 1
#endif
#if defined(USE_D2D)
#include <d2d1.h>
#include <dwrite.h>
#endif
#include "ScintillaTypes.h"
#include "ScintillaMessages.h"
#include "ScintillaStructures.h"
#include "ILoader.h"
#include "ILexer.h"
#include "Debugging.h"
#include "Geometry.h"
#include "Platform.h"
#include "CharacterCategoryMap.h"
#include "Position.h"
#include "UniqueString.h"
#include "SplitVector.h"
#include "Partitioning.h"
#include "RunStyles.h"
#include "ContractionState.h"
#include "CellBuffer.h"
#include "CallTip.h"
#include "KeyMap.h"
#include "Indicator.h"
#include "LineMarker.h"
#include "Style.h"
#include "ViewStyle.h"
#include "CharClassify.h"
#include "Decoration.h"
#include "CaseFolder.h"
#include "Document.h"
#include "CaseConvert.h"
#include "UniConversion.h"
#include "Selection.h"
#include "PositionCache.h"
#include "EditModel.h"
#include "MarginView.h"
#include "EditView.h"
#include "Editor.h"
#include "ElapsedPeriod.h"
#include "AutoComplete.h"
#include "ScintillaBase.h"
#include "WinTypes.h"
#include "PlatWin.h"
#include "HanjaDic.h"
#include "ScintillaWin.h"
#include "BoostRegexSearch.h"
//needed for gcc builds
#ifndef SPI_GETWHEELSCROLLLINES
#define SPI_GETWHEELSCROLLLINES 104
#endif
#ifndef WM_UNICHAR
#define WM_UNICHAR 0x0109
#endif
#ifndef WM_DPICHANGED
#define WM_DPICHANGED 0x02E0
#endif
#ifndef WM_DPICHANGED_AFTERPARENT
#define WM_DPICHANGED_AFTERPARENT 0x02E3
#endif
#ifndef UNICODE_NOCHAR
#define UNICODE_NOCHAR 0xFFFF
#endif
#ifndef IS_HIGH_SURROGATE
#define IS_HIGH_SURROGATE(x) ((x) >= SURROGATE_LEAD_FIRST && (x) <= SURROGATE_LEAD_LAST)
#endif
#ifndef IS_LOW_SURROGATE
#define IS_LOW_SURROGATE(x) ((x) >= SURROGATE_TRAIL_FIRST && (x) <= SURROGATE_TRAIL_LAST)
#endif
#ifndef MK_ALT
#define MK_ALT 32
#endif
namespace {
// Two idle messages SC_WIN_IDLE and SC_WORK_IDLE.
// SC_WIN_IDLE is low priority so should occur after the next WM_PAINT
// It is for lengthy actions like wrapping and background styling
constexpr UINT SC_WIN_IDLE = 5001;
// SC_WORK_IDLE is high priority and should occur before the next WM_PAINT
// It is for shorter actions like restyling the text just inserted
// and delivering SCN_UPDATEUI
constexpr UINT SC_WORK_IDLE = 5002;
constexpr int IndicatorInput = static_cast<int>(Scintilla::IndicatorNumbers::Ime);
constexpr int IndicatorTarget = IndicatorInput + 1;
constexpr int IndicatorConverted = IndicatorInput + 2;
constexpr int IndicatorUnknown = IndicatorInput + 3;
typedef UINT_PTR (WINAPI *SetCoalescableTimerSig)(HWND hwnd, UINT_PTR nIDEvent,
UINT uElapse, TIMERPROC lpTimerFunc, ULONG uToleranceDelay);
}
// GCC has trouble with the standard COM ABI so do it the old C way with explicit vtables.
using namespace Scintilla;
using namespace Scintilla::Internal;
namespace {
const TCHAR callClassName[] = TEXT("CallTip");
void SetWindowID(HWND hWnd, int identifier) noexcept {
::SetWindowLongPtr(hWnd, GWLP_ID, identifier);
}
Point PointFromLParam(sptr_t lpoint) noexcept {
return Point::FromInts(GET_X_LPARAM(lpoint), GET_Y_LPARAM(lpoint));
}
bool KeyboardIsKeyDown(int key) noexcept {
return (::GetKeyState(key) & 0x80000000) != 0;
}
// Bit 24 is the extended keyboard flag and the numeric keypad is non-extended
constexpr sptr_t extendedKeyboard = 1 << 24;
constexpr bool KeyboardIsNumericKeypadFunction(uptr_t wParam, sptr_t lParam) {
if ((lParam & extendedKeyboard) != 0) {
// Not from the numeric keypad
return false;
}
switch (wParam) {
case VK_INSERT: // 0
case VK_END: // 1
case VK_DOWN: // 2
case VK_NEXT: // 3
case VK_LEFT: // 4
case VK_CLEAR: // 5
case VK_RIGHT: // 6
case VK_HOME: // 7
case VK_UP: // 8
case VK_PRIOR: // 9
return true;
default:
return false;
}
}
/**
*/
class FormatEnumerator final : public IEnumFORMATETC {
public:
ULONG ref;
ULONG pos;
std::vector<CLIPFORMAT> formats;
FormatEnumerator(ULONG pos_, const CLIPFORMAT formats_[], size_t formatsLen_);
// IUnknown
STDMETHODIMP QueryInterface(REFIID riid, PVOID *ppv) override;
STDMETHODIMP_(ULONG)AddRef() override;
STDMETHODIMP_(ULONG)Release() override;
// IEnumFORMATETC
STDMETHODIMP Next(ULONG celt, FORMATETC *rgelt, ULONG *pceltFetched) override;
STDMETHODIMP Skip(ULONG celt) override;
STDMETHODIMP Reset() override;
STDMETHODIMP Clone(IEnumFORMATETC **ppenum) override;
};
/**
*/
class DropSource final : public IDropSource {
public:
ScintillaWin *sci = nullptr;
// IUnknown
STDMETHODIMP QueryInterface(REFIID riid, PVOID *ppv) override;
STDMETHODIMP_(ULONG)AddRef() override;
STDMETHODIMP_(ULONG)Release() override;
// IDropSource
STDMETHODIMP QueryContinueDrag(BOOL fEsc, DWORD grfKeyState) override;
STDMETHODIMP GiveFeedback(DWORD) override;
};
/**
*/
class DataObject final : public IDataObject {
public:
ScintillaWin *sci = nullptr;
// IUnknown
STDMETHODIMP QueryInterface(REFIID riid, PVOID *ppv) override;
STDMETHODIMP_(ULONG)AddRef() override;
STDMETHODIMP_(ULONG)Release() override;
// IDataObject
STDMETHODIMP GetData(FORMATETC *pFEIn, STGMEDIUM *pSTM) override;
STDMETHODIMP GetDataHere(FORMATETC *, STGMEDIUM *) override;
STDMETHODIMP QueryGetData(FORMATETC *pFE) override;
STDMETHODIMP GetCanonicalFormatEtc(FORMATETC *, FORMATETC *pFEOut) override;
STDMETHODIMP SetData(FORMATETC *, STGMEDIUM *, BOOL) override;
STDMETHODIMP EnumFormatEtc(DWORD dwDirection, IEnumFORMATETC **ppEnum) override;
STDMETHODIMP DAdvise(FORMATETC *, DWORD, IAdviseSink *, PDWORD) override;
STDMETHODIMP DUnadvise(DWORD) override;
STDMETHODIMP EnumDAdvise(IEnumSTATDATA **) override;
};
/**
*/
class DropTarget final : public IDropTarget {
public:
ScintillaWin *sci = nullptr;
// IUnknown
STDMETHODIMP QueryInterface(REFIID riid, PVOID *ppv) override;
STDMETHODIMP_(ULONG)AddRef() override;
STDMETHODIMP_(ULONG)Release() override;
// IDropTarget
STDMETHODIMP DragEnter(LPDATAOBJECT pIDataSource, DWORD grfKeyState, POINTL pt, PDWORD pdwEffect) override;
STDMETHODIMP DragOver(DWORD grfKeyState, POINTL pt, PDWORD pdwEffect) override;
STDMETHODIMP DragLeave() override;
STDMETHODIMP Drop(LPDATAOBJECT pIDataSource, DWORD grfKeyState, POINTL pt, PDWORD pdwEffect) override;
};
class IMContext {
HWND hwnd;
public:
HIMC hIMC;
IMContext(HWND hwnd_) noexcept :
hwnd(hwnd_), hIMC(::ImmGetContext(hwnd_)) {
}
// Deleted so IMContext objects can not be copied.
IMContext(const IMContext &) = delete;
IMContext(IMContext &&) = delete;
IMContext &operator=(const IMContext &) = delete;
IMContext &operator=(IMContext &&) = delete;
~IMContext() {
if (hIMC)
::ImmReleaseContext(hwnd, hIMC);
}
unsigned int GetImeCaretPos() const noexcept {
return ImmGetCompositionStringW(hIMC, GCS_CURSORPOS, nullptr, 0);
}
std::vector<BYTE> GetImeAttributes() {
const int attrLen = ::ImmGetCompositionStringW(hIMC, GCS_COMPATTR, nullptr, 0);
std::vector<BYTE> attr(attrLen, 0);
::ImmGetCompositionStringW(hIMC, GCS_COMPATTR, &attr[0], static_cast<DWORD>(attr.size()));
return attr;
}
std::wstring GetCompositionString(DWORD dwIndex) {
const LONG byteLen = ::ImmGetCompositionStringW(hIMC, dwIndex, nullptr, 0);
std::wstring wcs(byteLen / 2, 0);
::ImmGetCompositionStringW(hIMC, dwIndex, &wcs[0], byteLen);
return wcs;
}
};
class GlobalMemory;
class ReverseArrowCursor {
UINT dpi = USER_DEFAULT_SCREEN_DPI;
HCURSOR cursor {};
public:
ReverseArrowCursor() noexcept {}
// Deleted so ReverseArrowCursor objects can not be copied.
ReverseArrowCursor(const ReverseArrowCursor &) = delete;
ReverseArrowCursor(ReverseArrowCursor &&) = delete;
ReverseArrowCursor &operator=(const ReverseArrowCursor &) = delete;
ReverseArrowCursor &operator=(ReverseArrowCursor &&) = delete;
~ReverseArrowCursor() {
if (cursor) {
::DestroyCursor(cursor);
}
}
HCURSOR Load(UINT dpi_) noexcept {
if (cursor) {
if (dpi == dpi_) {
return cursor;
}
::DestroyCursor(cursor);
}
dpi = dpi_;
cursor = LoadReverseArrowCursor(dpi_);
return cursor ? cursor : ::LoadCursor({}, IDC_ARROW);
}
};
struct HorizontalScrollRange {
int pageWidth;
int documentWidth;
};
}
namespace Scintilla::Internal {
/**
*/
class ScintillaWin :
public ScintillaBase {
bool lastKeyDownConsumed;
wchar_t lastHighSurrogateChar;
bool capturedMouse;
bool trackedMouseLeave;
BOOL typingWithoutCursor;
bool cursorIsHidden;
SetCoalescableTimerSig SetCoalescableTimerFn;
unsigned int linesPerScroll; ///< Intellimouse support
unsigned int charsPerScroll; ///< Intellimouse support
MouseWheelDelta verticalWheelDelta;
MouseWheelDelta horizontalWheelDelta;
UINT dpi = USER_DEFAULT_SCREEN_DPI;
ReverseArrowCursor reverseArrowCursor;
PRectangle rectangleClient;
HRGN hRgnUpdate;
bool hasOKText;
CLIPFORMAT cfColumnSelect;
CLIPFORMAT cfBorlandIDEBlockType;
CLIPFORMAT cfLineSelect;
CLIPFORMAT cfVSLineTag;
HRESULT hrOle;
DropSource ds;
DataObject dob;
DropTarget dt;
static HINSTANCE hInstance;
static ATOM scintillaClassAtom;
static ATOM callClassAtom;
float deviceScaleFactor = 1.f;
int GetFirstIntegralMultipleDeviceScaleFactor() const noexcept {
return static_cast<int>(std::ceil(deviceScaleFactor));
}
#if defined(USE_D2D)
ID2D1RenderTarget *pRenderTarget;
bool renderTargetValid;
// rendering parameters for current monitor
HMONITOR hCurrentMonitor;
std::shared_ptr<RenderingParams> renderingParams;
#endif
explicit ScintillaWin(HWND hwnd);
// Deleted so ScintillaWin objects can not be copied.
ScintillaWin(const ScintillaWin &) = delete;
ScintillaWin(ScintillaWin &&) = delete;
ScintillaWin &operator=(const ScintillaWin &) = delete;
ScintillaWin &operator=(ScintillaWin &&) = delete;
// ~ScintillaWin() in public section
void Finalise() override;
#if defined(USE_D2D)
bool UpdateRenderingParams(bool force) noexcept;
void EnsureRenderTarget(HDC hdc);
#endif
void DropRenderTarget() noexcept;
HWND MainHWND() const noexcept;
static sptr_t DirectFunction(
sptr_t ptr, UINT iMessage, uptr_t wParam, sptr_t lParam);
static sptr_t DirectStatusFunction(
sptr_t ptr, UINT iMessage, uptr_t wParam, sptr_t lParam, int *pStatus);
static LRESULT PASCAL SWndProc(
HWND hWnd, UINT iMessage, WPARAM wParam, LPARAM lParam);
static LRESULT PASCAL CTWndProc(
HWND hWnd, UINT iMessage, WPARAM wParam, LPARAM lParam);
enum : UINT_PTR { invalidTimerID, standardTimerID, idleTimerID, fineTimerStart };
void DisplayCursor(Window::Cursor c) override;
bool DragThreshold(Point ptStart, Point ptNow) override;
void StartDrag() override;
static KeyMod MouseModifiers(uptr_t wParam) noexcept;
Sci::Position TargetAsUTF8(char *text) const;
Sci::Position EncodedFromUTF8(const char *utf8, char *encoded) const;
void SetRenderingParams(Surface *psurf) const;
bool PaintDC(HDC hdc);
sptr_t WndPaint();
// DBCS
void ImeStartComposition();
void ImeEndComposition();
LRESULT ImeOnReconvert(LPARAM lParam);
LRESULT ImeOnDocumentFeed(LPARAM lParam) const;
sptr_t HandleCompositionWindowed(uptr_t wParam, sptr_t lParam);
sptr_t HandleCompositionInline(uptr_t wParam, sptr_t lParam);
static bool KoreanIME() noexcept;
void MoveImeCarets(Sci::Position offset) noexcept;
void DrawImeIndicator(int indicator, Sci::Position len);
void SetCandidateWindowPos();
void SelectionToHangul();
void EscapeHanja();
void ToggleHanja();
void AddWString(std::wstring_view wsv, CharacterSource charSource);
UINT CodePageOfDocument() const noexcept;
bool ValidCodePage(int codePage) const override;
std::string UTF8FromEncoded(std::string_view encoded) const override;
std::string EncodedFromUTF8(std::string_view utf8) const override;
std::string EncodeWString(std::wstring_view wsv);
sptr_t DefWndProc(Message iMessage, uptr_t wParam, sptr_t lParam) override;
void IdleWork() override;
void QueueIdleWork(WorkItems items, Sci::Position upTo) override;
bool SetIdle(bool on) override;
UINT_PTR timers[static_cast<int>(TickReason::dwell)+1] {};
bool FineTickerRunning(TickReason reason) override;
void FineTickerStart(TickReason reason, int millis, int tolerance) override;
void FineTickerCancel(TickReason reason) override;
void SetMouseCapture(bool on) override;
bool HaveMouseCapture() override;
void SetTrackMouseLeaveEvent(bool on) noexcept;
void HideCursorIfPreferred() noexcept;
void UpdateBaseElements() override;
bool PaintContains(PRectangle rc) override;
void ScrollText(Sci::Line linesToMove) override;
void NotifyCaretMove() override;
void UpdateSystemCaret() override;
void SetVerticalScrollPos() override;
void SetHorizontalScrollPos() override;
void HorizontalScrollToClamped(int xPos);
HorizontalScrollRange GetHorizontalScrollRange() const;
bool ModifyScrollBars(Sci::Line nMax, Sci::Line nPage) override;
void NotifyChange() override;
void NotifyFocus(bool focus) override;
void SetCtrlID(int identifier) override;
int GetCtrlID() override;
void NotifyParent(NotificationData scn) override;
void NotifyDoubleClick(Point pt, KeyMod modifiers) override;
std::unique_ptr<CaseFolder> CaseFolderForEncoding() override;
std::string CaseMapString(const std::string &s, CaseMapping caseMapping) override;
void Copy() override;
bool CanPaste() override;
void Paste() override;
void CreateCallTipWindow(PRectangle rc) override;
void AddToPopUp(const char *label, int cmd = 0, bool enabled = true) override;
void ClaimSelection() override;
void GetMouseParameters() noexcept;
void CopyToGlobal(GlobalMemory &gmUnicode, const SelectionText &selectedText);
void CopyToClipboard(const SelectionText &selectedText) override;
void ScrollMessage(WPARAM wParam);
void HorizontalScrollMessage(WPARAM wParam);
void FullPaint();
void FullPaintDC(HDC hdc);
bool IsCompatibleDC(HDC hOtherDC) noexcept;
DWORD EffectFromState(DWORD grfKeyState) const noexcept;
bool IsVisible() const noexcept;
int SetScrollInfo(int nBar, LPCSCROLLINFO lpsi, BOOL bRedraw) noexcept;
bool GetScrollInfo(int nBar, LPSCROLLINFO lpsi) noexcept;
bool ChangeScrollRange(int nBar, int nMin, int nMax, UINT nPage) noexcept;
void ChangeScrollPos(int barType, Sci::Position pos);
sptr_t GetTextLength();
sptr_t GetText(uptr_t wParam, sptr_t lParam);
Window::Cursor ContextCursor(Point pt);
sptr_t ShowContextMenu(unsigned int iMessage, uptr_t wParam, sptr_t lParam);
PRectangle GetClientRectangle() const override;
void SizeWindow();
sptr_t MouseMessage(unsigned int iMessage, uptr_t wParam, sptr_t lParam);
sptr_t KeyMessage(unsigned int iMessage, uptr_t wParam, sptr_t lParam);
sptr_t FocusMessage(unsigned int iMessage, uptr_t wParam, sptr_t lParam);
sptr_t IMEMessage(unsigned int iMessage, uptr_t wParam, sptr_t lParam);
sptr_t EditMessage(unsigned int iMessage, uptr_t wParam, sptr_t lParam);
sptr_t IdleMessage(unsigned int iMessage, uptr_t wParam, sptr_t lParam);
sptr_t SciMessage(Message iMessage, uptr_t wParam, sptr_t lParam);
public:
~ScintillaWin() override;
// Public for benefit of Scintilla_DirectFunction
sptr_t WndProc(Message iMessage, uptr_t wParam, sptr_t lParam) override;
/// Implement IUnknown
STDMETHODIMP QueryInterface(REFIID riid, PVOID *ppv);
STDMETHODIMP_(ULONG)AddRef();
STDMETHODIMP_(ULONG)Release();
/// Implement IDropTarget
STDMETHODIMP DragEnter(LPDATAOBJECT pIDataSource, DWORD grfKeyState,
POINTL pt, PDWORD pdwEffect);
STDMETHODIMP DragOver(DWORD grfKeyState, POINTL pt, PDWORD pdwEffect);
STDMETHODIMP DragLeave();
STDMETHODIMP Drop(LPDATAOBJECT pIDataSource, DWORD grfKeyState,
POINTL pt, PDWORD pdwEffect);
/// Implement important part of IDataObject
STDMETHODIMP GetData(FORMATETC *pFEIn, STGMEDIUM *pSTM);
static void Prepare() noexcept;
static bool Register(HINSTANCE hInstance_) noexcept;
static bool Unregister() noexcept;
bool DragIsRectangularOK(CLIPFORMAT fmt) const noexcept {
return drag.rectangular && (fmt == cfColumnSelect);
}
private:
// For use in creating a system caret
bool HasCaretSizeChanged() const noexcept;
BOOL CreateSystemCaret();
BOOL DestroySystemCaret() noexcept;
HBITMAP sysCaretBitmap;
int sysCaretWidth;
int sysCaretHeight;
bool styleIdleInQueue;
};
HINSTANCE ScintillaWin::hInstance {};
ATOM ScintillaWin::scintillaClassAtom = 0;
ATOM ScintillaWin::callClassAtom = 0;
ScintillaWin::ScintillaWin(HWND hwnd) {
lastKeyDownConsumed = false;
lastHighSurrogateChar = 0;
capturedMouse = false;
trackedMouseLeave = false;
typingWithoutCursor = false;
cursorIsHidden = false;
SetCoalescableTimerFn = nullptr;
linesPerScroll = 0;
charsPerScroll = 0;
dpi = DpiForWindow(hwnd);
hRgnUpdate = {};
hasOKText = false;
// There does not seem to be a real standard for indicating that the clipboard
// contains a rectangular selection, so copy Developer Studio and Borland Delphi.
cfColumnSelect = static_cast<CLIPFORMAT>(
::RegisterClipboardFormat(TEXT("MSDEVColumnSelect")));
cfBorlandIDEBlockType = static_cast<CLIPFORMAT>(
::RegisterClipboardFormat(TEXT("Borland IDE Block Type")));
// Likewise for line-copy (copies a full line when no text is selected)
cfLineSelect = static_cast<CLIPFORMAT>(
::RegisterClipboardFormat(TEXT("MSDEVLineSelect")));
cfVSLineTag = static_cast<CLIPFORMAT>(
::RegisterClipboardFormat(TEXT("VisualStudioEditorOperationsLineCutCopyClipboardTag")));
hrOle = E_FAIL;
wMain = hwnd;
dob.sci = this;
ds.sci = this;
dt.sci = this;
sysCaretBitmap = {};
sysCaretWidth = 0;
sysCaretHeight = 0;
styleIdleInQueue = false;
#if defined(USE_D2D)
pRenderTarget = nullptr;
renderTargetValid = true;
hCurrentMonitor = {};
#endif
caret.period = ::GetCaretBlinkTime();
if (caret.period < 0)
caret.period = 0;
// Initialize COM. If the app has already done this it will have
// no effect. If the app hasn't, we really shouldn't ask them to call
// it just so this internal feature works.
hrOle = ::OleInitialize(nullptr);
// Find SetCoalescableTimer which is only available from Windows 8+
HMODULE user32 = ::GetModuleHandleW(L"user32.dll");
SetCoalescableTimerFn = DLLFunction<SetCoalescableTimerSig>(user32, "SetCoalescableTimer");
vs.indicators[IndicatorUnknown] = Indicator(IndicatorStyle::Hidden, ColourRGBA(0, 0, 0xff));
vs.indicators[IndicatorInput] = Indicator(IndicatorStyle::Dots, ColourRGBA(0, 0, 0xff));
vs.indicators[IndicatorConverted] = Indicator(IndicatorStyle::CompositionThick, ColourRGBA(0, 0, 0xff));
vs.indicators[IndicatorTarget] = Indicator(IndicatorStyle::StraightBox, ColourRGBA(0, 0, 0xff));
}
ScintillaWin::~ScintillaWin() {
if (sysCaretBitmap) {
::DeleteObject(sysCaretBitmap);
sysCaretBitmap = {};
}
}
void ScintillaWin::Finalise() {
ScintillaBase::Finalise();
for (TickReason tr = TickReason::caret; tr <= TickReason::dwell;
tr = static_cast<TickReason>(static_cast<int>(tr) + 1)) {
FineTickerCancel(tr);
}
SetIdle(false);
DropRenderTarget();
::RevokeDragDrop(MainHWND());
if (SUCCEEDED(hrOle)) {
::OleUninitialize();
}
}
#if defined(USE_D2D)
bool ScintillaWin::UpdateRenderingParams(bool force) noexcept {
if (!renderingParams) {
try {
renderingParams = std::make_shared<RenderingParams>();
} catch (const std::bad_alloc &) {
return false;
}
}
const HWND hRootWnd = ::GetAncestor(MainHWND(), GA_ROOT);
const HMONITOR monitor = Internal::MonitorFromWindowHandleScaling(hRootWnd);
if (!force && monitor == hCurrentMonitor && renderingParams->defaultRenderingParams) {
return false;
}
IDWriteRenderingParams *monitorRenderingParams = nullptr;
IDWriteRenderingParams *customClearTypeRenderingParams = nullptr;
const HRESULT hr = pIDWriteFactory->CreateMonitorRenderingParams(monitor, &monitorRenderingParams);
UINT clearTypeContrast = 0;
if (SUCCEEDED(hr) && ::SystemParametersInfo(SPI_GETFONTSMOOTHINGCONTRAST, 0, &clearTypeContrast, 0) != 0) {
if (clearTypeContrast >= 1000 && clearTypeContrast <= 2200) {
const FLOAT gamma = static_cast<FLOAT>(clearTypeContrast) / 1000.0f;
pIDWriteFactory->CreateCustomRenderingParams(gamma,
monitorRenderingParams->GetEnhancedContrast(),
monitorRenderingParams->GetClearTypeLevel(),
monitorRenderingParams->GetPixelGeometry(),
monitorRenderingParams->GetRenderingMode(),
&customClearTypeRenderingParams);
}
}
hCurrentMonitor = monitor;
deviceScaleFactor = Internal::GetDeviceScaleFactorWhenGdiScalingActive(hRootWnd);
renderingParams->defaultRenderingParams.reset(monitorRenderingParams);
renderingParams->customRenderingParams.reset(customClearTypeRenderingParams);
return true;
}
namespace {
D2D1_SIZE_U GetSizeUFromRect(const RECT &rc, const int scaleFactor) noexcept {
const long width = rc.right - rc.left;
const long height = rc.bottom - rc.top;
const UINT32 scaledWidth = width * scaleFactor;
const UINT32 scaledHeight = height * scaleFactor;
return D2D1::SizeU(scaledWidth, scaledHeight);
}
}
void ScintillaWin::EnsureRenderTarget(HDC hdc) {
if (!renderTargetValid) {
DropRenderTarget();
renderTargetValid = true;
}
if (!pRenderTarget) {
HWND hw = MainHWND();
RECT rc;
::GetClientRect(hw, &rc);
// Create a Direct2D render target.
D2D1_RENDER_TARGET_PROPERTIES drtp {};
drtp.type = D2D1_RENDER_TARGET_TYPE_DEFAULT;
drtp.usage = D2D1_RENDER_TARGET_USAGE_NONE;
drtp.minLevel = D2D1_FEATURE_LEVEL_DEFAULT;
if (technology == Technology::DirectWriteDC) {
drtp.dpiX = 96.f;
drtp.dpiY = 96.f;
// Explicit pixel format needed.
drtp.pixelFormat = D2D1::PixelFormat(DXGI_FORMAT_B8G8R8A8_UNORM,
D2D1_ALPHA_MODE_IGNORE);
ID2D1DCRenderTarget *pDCRT = nullptr;
const HRESULT hr = pD2DFactory->CreateDCRenderTarget(&drtp, &pDCRT);
if (SUCCEEDED(hr)) {
pRenderTarget = pDCRT;
} else {
Platform::DebugPrintf("Failed CreateDCRenderTarget 0x%lx\n", hr);
pRenderTarget = nullptr;
}
} else {
const int integralDeviceScaleFactor = GetFirstIntegralMultipleDeviceScaleFactor();
drtp.dpiX = 96.f * integralDeviceScaleFactor;
drtp.dpiY = 96.f * integralDeviceScaleFactor;
drtp.pixelFormat = D2D1::PixelFormat(DXGI_FORMAT_UNKNOWN,
D2D1_ALPHA_MODE_UNKNOWN);
D2D1_HWND_RENDER_TARGET_PROPERTIES dhrtp {};
dhrtp.hwnd = hw;
dhrtp.pixelSize = ::GetSizeUFromRect(rc, integralDeviceScaleFactor);
dhrtp.presentOptions = (technology == Technology::DirectWriteRetain) ?
D2D1_PRESENT_OPTIONS_RETAIN_CONTENTS : D2D1_PRESENT_OPTIONS_NONE;
ID2D1HwndRenderTarget *pHwndRenderTarget = nullptr;
const HRESULT hr = pD2DFactory->CreateHwndRenderTarget(drtp, dhrtp, &pHwndRenderTarget);
if (SUCCEEDED(hr)) {
pRenderTarget = pHwndRenderTarget;
} else {
Platform::DebugPrintf("Failed CreateHwndRenderTarget 0x%lx\n", hr);
pRenderTarget = nullptr;
}
}
// Pixmaps were created to be compatible with previous render target so
// need to be recreated.
DropGraphics();
}
if ((technology == Technology::DirectWriteDC) && pRenderTarget) {
RECT rcWindow;
::GetClientRect(MainHWND(), &rcWindow);
const HRESULT hr = static_cast<ID2D1DCRenderTarget*>(pRenderTarget)->BindDC(hdc, &rcWindow);
if (FAILED(hr)) {
Platform::DebugPrintf("BindDC failed 0x%lx\n", hr);
DropRenderTarget();
}
}
}
#endif
void ScintillaWin::DropRenderTarget() noexcept {
#if defined(USE_D2D)
ReleaseUnknown(pRenderTarget);
#endif
}
HWND ScintillaWin::MainHWND() const noexcept {
return HwndFromWindow(wMain);
}
void ScintillaWin::DisplayCursor(Window::Cursor c) {
if (cursorMode != CursorShape::Normal) {
c = static_cast<Window::Cursor>(cursorMode);
}
if (c == Window::Cursor::reverseArrow) {
::SetCursor(reverseArrowCursor.Load(static_cast<UINT>(dpi * deviceScaleFactor)));
} else {
wMain.SetCursor(c);
}
}
bool ScintillaWin::DragThreshold(Point ptStart, Point ptNow) {
const Point ptDifference = ptStart - ptNow;
const XYPOSITION xMove = std::trunc(std::abs(ptDifference.x));
const XYPOSITION yMove = std::trunc(std::abs(ptDifference.y));
return (xMove > SystemMetricsForDpi(SM_CXDRAG, dpi)) ||
(yMove > SystemMetricsForDpi(SM_CYDRAG, dpi));
}
void ScintillaWin::StartDrag() {
inDragDrop = DragDrop::dragging;
DWORD dwEffect = 0;
dropWentOutside = true;
IDataObject *pDataObject = &dob;
IDropSource *pDropSource = &ds;
//Platform::DebugPrintf("About to DoDragDrop %x %x\n", pDataObject, pDropSource);
const HRESULT hr = ::DoDragDrop(
pDataObject,
pDropSource,
DROPEFFECT_COPY | DROPEFFECT_MOVE, &dwEffect);
//Platform::DebugPrintf("DoDragDrop = %x\n", hr);
if (SUCCEEDED(hr)) {
if ((hr == DRAGDROP_S_DROP) && (dwEffect == DROPEFFECT_MOVE) && dropWentOutside) {
// Remove dragged out text
ClearSelection();
}
}
inDragDrop = DragDrop::none;
SetDragPosition(SelectionPosition(Sci::invalidPosition));
}
KeyMod ScintillaWin::MouseModifiers(uptr_t wParam) noexcept {
return ModifierFlags(
(wParam & MK_SHIFT) != 0,
(wParam & MK_CONTROL) != 0,
KeyboardIsKeyDown(VK_MENU));
}
}
namespace {
int InputCodePage() noexcept {
HKL inputLocale = ::GetKeyboardLayout(0);
const LANGID inputLang = LOWORD(inputLocale);
char sCodePage[10];
const int res = ::GetLocaleInfoA(MAKELCID(inputLang, SORT_DEFAULT),
LOCALE_IDEFAULTANSICODEPAGE, sCodePage, sizeof(sCodePage));
if (!res)
return 0;
return atoi(sCodePage);
}
/** Map the key codes to their equivalent Keys:: form. */
Keys KeyTranslate(uptr_t keyIn) noexcept {
switch (keyIn) {
case VK_DOWN: return Keys::Down;
case VK_UP: return Keys::Up;
case VK_LEFT: return Keys::Left;
case VK_RIGHT: return Keys::Right;
case VK_HOME: return Keys::Home;
case VK_END: return Keys::End;
case VK_PRIOR: return Keys::Prior;
case VK_NEXT: return Keys::Next;
case VK_DELETE: return Keys::Delete;
case VK_INSERT: return Keys::Insert;
case VK_ESCAPE: return Keys::Escape;
case VK_BACK: return Keys::Back;
case VK_TAB: return Keys::Tab;
case VK_RETURN: return Keys::Return;
case VK_ADD: return Keys::Add;
case VK_SUBTRACT: return Keys::Subtract;
case VK_DIVIDE: return Keys::Divide;
case VK_LWIN: return Keys::Win;
case VK_RWIN: return Keys::RWin;
case VK_APPS: return Keys::Menu;
case VK_OEM_2: return static_cast<Keys>('/');
case VK_OEM_3: return static_cast<Keys>('`');
case VK_OEM_4: return static_cast<Keys>('[');
case VK_OEM_5: return static_cast<Keys>('\\');
case VK_OEM_6: return static_cast<Keys>(']');
default: return static_cast<Keys>(keyIn);
}
}
bool BoundsContains(PRectangle rcBounds, HRGN hRgnBounds, PRectangle rcCheck) noexcept {
bool contains = true;
if (!rcCheck.Empty()) {
if (!rcBounds.Contains(rcCheck)) {
contains = false;
} else if (hRgnBounds) {
// In bounding rectangle so check more accurately using region
const RECT rcw = RectFromPRectangle(rcCheck);
HRGN hRgnCheck = ::CreateRectRgnIndirect(&rcw);
if (hRgnCheck) {
HRGN hRgnDifference = ::CreateRectRgn(0, 0, 0, 0);
if (hRgnDifference) {
const int combination = ::CombineRgn(hRgnDifference, hRgnCheck, hRgnBounds, RGN_DIFF);
if (combination != NULLREGION) {
contains = false;
}
::DeleteRgn(hRgnDifference);
}
::DeleteRgn(hRgnCheck);
}
}
}
return contains;
}
// Simplify calling WideCharToMultiByte and MultiByteToWideChar by providing default parameters and using string view.
int MultiByteFromWideChar(UINT codePage, std::wstring_view wsv, LPSTR lpMultiByteStr, ptrdiff_t cbMultiByte) noexcept {
return ::WideCharToMultiByte(codePage, 0, wsv.data(), static_cast<int>(wsv.length()), lpMultiByteStr, static_cast<int>(cbMultiByte), nullptr, nullptr);
}
int MultiByteLenFromWideChar(UINT codePage, std::wstring_view wsv) noexcept {
return MultiByteFromWideChar(codePage, wsv, nullptr, 0);
}
int WideCharFromMultiByte(UINT codePage, std::string_view sv, LPWSTR lpWideCharStr, ptrdiff_t cchWideChar) noexcept {
return ::MultiByteToWideChar(codePage, 0, sv.data(), static_cast<int>(sv.length()), lpWideCharStr, static_cast<int>(cchWideChar));
}
int WideCharLenFromMultiByte(UINT codePage, std::string_view sv) noexcept {
return WideCharFromMultiByte(codePage, sv, nullptr, 0);
}
std::string StringEncode(std::wstring_view wsv, int codePage) {
const int cchMulti = wsv.length() ? MultiByteLenFromWideChar(codePage, wsv) : 0;
std::string sMulti(cchMulti, 0);
if (cchMulti) {
MultiByteFromWideChar(codePage, wsv, sMulti.data(), cchMulti);
}
return sMulti;
}
std::wstring StringDecode(std::string_view sv, int codePage) {
const int cchWide = sv.length() ? WideCharLenFromMultiByte(codePage, sv) : 0;
std::wstring sWide(cchWide, 0);
if (cchWide) {
WideCharFromMultiByte(codePage, sv, sWide.data(), cchWide);
}
return sWide;
}
std::wstring StringMapCase(std::wstring_view wsv, DWORD mapFlags) {
const int charsConverted = ::LCMapStringW(LOCALE_SYSTEM_DEFAULT, mapFlags,
wsv.data(), static_cast<int>(wsv.length()), nullptr, 0);
std::wstring wsConverted(charsConverted, 0);
if (charsConverted) {
::LCMapStringW(LOCALE_SYSTEM_DEFAULT, mapFlags,
wsv.data(), static_cast<int>(wsv.length()), wsConverted.data(), charsConverted);
}
return wsConverted;
}
}
// Returns the target converted to UTF8.
// Return the length in bytes.
Sci::Position ScintillaWin::TargetAsUTF8(char *text) const {
const Sci::Position targetLength = targetRange.Length();
if (IsUnicodeMode()) {
if (text) {
pdoc->GetCharRange(text, targetRange.start.Position(), targetLength);
}
} else {
// Need to convert
const std::string s = RangeText(targetRange.start.Position(), targetRange.end.Position());
const std::wstring characters = StringDecode(s, CodePageOfDocument());
const int utf8Len = MultiByteLenFromWideChar(CpUtf8, characters);
if (text) {
MultiByteFromWideChar(CpUtf8, characters, text, utf8Len);
text[utf8Len] = '\0';
}
return utf8Len;
}
return targetLength;
}
// Translates a nul terminated UTF8 string into the document encoding.
// Return the length of the result in bytes.
Sci::Position ScintillaWin::EncodedFromUTF8(const char *utf8, char *encoded) const {
const Sci::Position inputLength = (lengthForEncode >= 0) ? lengthForEncode : strlen(utf8);
if (IsUnicodeMode()) {
if (encoded) {
memcpy(encoded, utf8, inputLength);
}
return inputLength;
} else {
// Need to convert
const std::string_view utf8Input(utf8, inputLength);
const int charsLen = WideCharLenFromMultiByte(CpUtf8, utf8Input);
std::wstring characters(charsLen, L'\0');
WideCharFromMultiByte(CpUtf8, utf8Input, &characters[0], charsLen);
const int encodedLen = MultiByteLenFromWideChar(CodePageOfDocument(), characters);
if (encoded) {
MultiByteFromWideChar(CodePageOfDocument(), characters, encoded, encodedLen);
encoded[encodedLen] = '\0';
}
return encodedLen;
}
}
void ScintillaWin::SetRenderingParams([[maybe_unused]] Surface *psurf) const {
#if defined(USE_D2D)
if (psurf) {
ISetRenderingParams *setDrawingParams = dynamic_cast<ISetRenderingParams *>(psurf);
if (setDrawingParams) {
setDrawingParams->SetRenderingParams(renderingParams);
}
}
#endif
}
bool ScintillaWin::PaintDC(HDC hdc) {
if (technology == Technology::Default) {
AutoSurface surfaceWindow(hdc, this);
if (surfaceWindow) {
Paint(surfaceWindow, rcPaint);
surfaceWindow->Release();
}
} else {
#if defined(USE_D2D)
EnsureRenderTarget(hdc);
if (pRenderTarget) {
AutoSurface surfaceWindow(pRenderTarget, this);
if (surfaceWindow) {
SetRenderingParams(surfaceWindow);
pRenderTarget->BeginDraw();
Paint(surfaceWindow, rcPaint);
surfaceWindow->Release();
const HRESULT hr = pRenderTarget->EndDraw();
if (hr == static_cast<HRESULT>(D2DERR_RECREATE_TARGET)) {
DropRenderTarget();
return false;
}
}
}
#endif
}
return true;
}
sptr_t ScintillaWin::WndPaint() {
//ElapsedPeriod ep;
// Redirect assertions to debug output and save current state
const bool assertsPopup = Platform::ShowAssertionPopUps(false);
paintState = PaintState::painting;
PAINTSTRUCT ps = {};
// Removed since this interferes with reporting other assertions as it occurs repeatedly
//PLATFORM_ASSERT(hRgnUpdate == NULL);
hRgnUpdate = ::CreateRectRgn(0, 0, 0, 0);
::GetUpdateRgn(MainHWND(), hRgnUpdate, FALSE);
::BeginPaint(MainHWND(), &ps);
rcPaint = PRectangle::FromInts(ps.rcPaint.left, ps.rcPaint.top, ps.rcPaint.right, ps.rcPaint.bottom);
const PRectangle rcClient = GetClientRectangle();
paintingAllText = BoundsContains(rcPaint, hRgnUpdate, rcClient);
if (!PaintDC(ps.hdc)) {
paintState = PaintState::abandoned;
}
if (hRgnUpdate) {
::DeleteRgn(hRgnUpdate);
hRgnUpdate = {};
}
::EndPaint(MainHWND(), &ps);
if (paintState == PaintState::abandoned) {
// Painting area was insufficient to cover new styling or brace highlight positions
FullPaint();
::ValidateRect(MainHWND(), nullptr);
}
paintState = PaintState::notPainting;
// Restore debug output state
Platform::ShowAssertionPopUps(assertsPopup);
//Platform::DebugPrintf("Paint took %g\n", ep.Duration());
return 0;
}
sptr_t ScintillaWin::HandleCompositionWindowed(uptr_t wParam, sptr_t lParam) {
if (lParam & GCS_RESULTSTR) {
IMContext imc(MainHWND());
if (imc.hIMC) {
AddWString(imc.GetCompositionString(GCS_RESULTSTR), CharacterSource::ImeResult);
// Set new position after converted
const Point pos = PointMainCaret();
COMPOSITIONFORM CompForm {};
CompForm.dwStyle = CFS_POINT;
CompForm.ptCurrentPos = POINTFromPoint(pos);
::ImmSetCompositionWindow(imc.hIMC, &CompForm);
}
return 0;
}
return ::DefWindowProc(MainHWND(), WM_IME_COMPOSITION, wParam, lParam);
}
bool ScintillaWin::KoreanIME() noexcept {
const int codePage = InputCodePage();
return codePage == 949 || codePage == 1361;
}
void ScintillaWin::MoveImeCarets(Sci::Position offset) noexcept {
// Move carets relatively by bytes.
for (size_t r=0; r<sel.Count(); r++) {
const Sci::Position positionInsert = sel.Range(r).Start().Position();
sel.Range(r).caret.SetPosition(positionInsert + offset);
sel.Range(r).anchor.SetPosition(positionInsert + offset);
}
}
void ScintillaWin::DrawImeIndicator(int indicator, Sci::Position len) {
// Emulate the visual style of IME characters with indicators.
// Draw an indicator on the character before caret by the character bytes of len
// so it should be called after InsertCharacter().
// It does not affect caret positions.
if (indicator < 8 || indicator > IndicatorMax) {
return;
}
pdoc->DecorationSetCurrentIndicator(indicator);
for (size_t r=0; r<sel.Count(); r++) {
const Sci::Position positionInsert = sel.Range(r).Start().Position();
pdoc->DecorationFillRange(positionInsert - len, 1, len);
}
}
void ScintillaWin::SetCandidateWindowPos() {
IMContext imc(MainHWND());
if (imc.hIMC) {
const Point pos = PointMainCaret();
const PRectangle rcClient = GetTextRectangle();
CANDIDATEFORM CandForm{};
CandForm.dwIndex = 0;
CandForm.dwStyle = CFS_EXCLUDE;
CandForm.ptCurrentPos.x = static_cast<int>(pos.x);
CandForm.ptCurrentPos.y = static_cast<int>(pos.y + std::max(4, vs.lineHeight/4));
// Exclude the area of the whole caret line
CandForm.rcArea.top = static_cast<int>(pos.y);
CandForm.rcArea.bottom = static_cast<int>(pos.y + vs.lineHeight);
CandForm.rcArea.left = static_cast<int>(rcClient.left);
CandForm.rcArea.right = static_cast<int>(rcClient.right);
::ImmSetCandidateWindow(imc.hIMC, &CandForm);
}
}
void ScintillaWin::SelectionToHangul() {
// Convert every hanja to hangul within the main range.
const Sci::Position selStart = sel.RangeMain().Start().Position();
const Sci::Position documentStrLen = sel.RangeMain().Length();
const Sci::Position selEnd = selStart + documentStrLen;
const Sci::Position utf16Len = pdoc->CountUTF16(selStart, selEnd);
if (utf16Len > 0) {
std::string documentStr(documentStrLen, '\0');
pdoc->GetCharRange(&documentStr[0], selStart, documentStrLen);
std::wstring uniStr = StringDecode(documentStr, CodePageOfDocument());
const bool converted = HanjaDict::GetHangulOfHanja(uniStr);
if (converted) {
documentStr = StringEncode(uniStr, CodePageOfDocument());
pdoc->BeginUndoAction();
ClearSelection();
InsertPaste(&documentStr[0], documentStr.size());
pdoc->EndUndoAction();
}
}
}
void ScintillaWin::EscapeHanja() {
// The candidate box pops up to user to select a hanja.
// It comes into WM_IME_COMPOSITION with GCS_RESULTSTR.
// The existing hangul or hanja is replaced with it.
if (sel.Count() > 1) {
return; // Do not allow multi carets.
}
const Sci::Position currentPos = CurrentPosition();
const int oneCharLen = pdoc->LenChar(currentPos);
if (oneCharLen < 2) {
return; // No need to handle SBCS.
}
// ImmEscapeW() may overwrite uniChar[] with a null terminated string.
// So enlarge it enough to Maximum 4 as in UTF-8.
constexpr size_t safeLength = UTF8MaxBytes + 1;
std::string oneChar(safeLength, '\0');
pdoc->GetCharRange(&oneChar[0], currentPos, oneCharLen);
std::wstring uniChar = StringDecode(oneChar, CodePageOfDocument());
IMContext imc(MainHWND());
if (imc.hIMC) {
// Set the candidate box position since IME may show it.
SetCandidateWindowPos();
// IME_ESC_HANJA_MODE appears to receive the first character only.
if (::ImmEscapeW(GetKeyboardLayout(0), imc.hIMC, IME_ESC_HANJA_MODE, &uniChar[0])) {
SetSelection(currentPos, currentPos + oneCharLen);
}
}
}
void ScintillaWin::ToggleHanja() {
// If selection, convert every hanja to hangul within the main range.
// If no selection, commit to IME.
if (sel.Count() > 1) {
return; // Do not allow multi carets.
}
if (sel.Empty()) {
EscapeHanja();
} else {
SelectionToHangul();
}
}
namespace {
std::vector<int> MapImeIndicators(std::vector<BYTE> inputStyle) {
std::vector<int> imeIndicator(inputStyle.size(), IndicatorUnknown);
for (size_t i = 0; i < inputStyle.size(); i++) {
switch (static_cast<int>(inputStyle.at(i))) {
case ATTR_INPUT:
imeIndicator[i] = IndicatorInput;
break;
case ATTR_TARGET_NOTCONVERTED:
case ATTR_TARGET_CONVERTED:
imeIndicator[i] = IndicatorTarget;
break;
case ATTR_CONVERTED:
imeIndicator[i] = IndicatorConverted;
break;
default:
imeIndicator[i] = IndicatorUnknown;
break;
}
}
return imeIndicator;
}
}
void ScintillaWin::AddWString(std::wstring_view wsv, CharacterSource charSource) {
if (wsv.empty())
return;
const int codePage = CodePageOfDocument();
for (size_t i = 0; i < wsv.size(); ) {
const size_t ucWidth = UTF16CharLength(wsv[i]);
const std::string docChar = StringEncode(wsv.substr(i, ucWidth), codePage);
InsertCharacter(docChar, charSource);
i += ucWidth;
}
}
sptr_t ScintillaWin::HandleCompositionInline(uptr_t, sptr_t lParam) {
// Copy & paste by johnsonj with a lot of helps of Neil.
// Great thanks for my foreruners, jiniya and BLUEnLIVE.
IMContext imc(MainHWND());
if (!imc.hIMC)
return 0;
if (pdoc->IsReadOnly() || SelectionContainsProtected()) {
::ImmNotifyIME(imc.hIMC, NI_COMPOSITIONSTR, CPS_CANCEL, 0);
return 0;
}
bool initialCompose = false;
if (pdoc->TentativeActive()) {
pdoc->TentativeUndo();
} else {
// No tentative undo means start of this composition so
// fill in any virtual spaces.
initialCompose = true;
}
view.imeCaretBlockOverride = false;
HideCursorIfPreferred();
if (lParam & GCS_RESULTSTR) {
AddWString(imc.GetCompositionString(GCS_RESULTSTR), CharacterSource::ImeResult);
}
if (lParam & GCS_COMPSTR) {
const std::wstring wcs = imc.GetCompositionString(GCS_COMPSTR);
if (wcs.empty()) {
ShowCaretAtCurrentPosition();
return 0;
}
if (initialCompose) {
ClearBeforeTentativeStart();
}
// Set candidate window left aligned to beginning of preedit string.
SetCandidateWindowPos();
pdoc->TentativeStart(); // TentativeActive from now on.
std::vector<int> imeIndicator = MapImeIndicators(imc.GetImeAttributes());
const int codePage = CodePageOfDocument();
const std::wstring_view wsv = wcs;
for (size_t i = 0; i < wsv.size(); ) {
const size_t ucWidth = UTF16CharLength(wsv[i]);
const std::string docChar = StringEncode(wsv.substr(i, ucWidth), codePage);
InsertCharacter(docChar, CharacterSource::TentativeInput);
DrawImeIndicator(imeIndicator[i], docChar.size());
i += ucWidth;
}
// Japanese IME after pressing Tab replaces input string with first candidate item (target string);
// when selecting other candidate item, previous item will be replaced with current one.
// After candidate item been added, it's looks like been full selected, it's better to keep caret
// at end of "selection" (end of input) instead of jump to beginning of input ("selection").
const bool onlyTarget = std::all_of(imeIndicator.begin(), imeIndicator.end(), [](int i) noexcept {
return i == IndicatorTarget;
});
if (!onlyTarget) {
// CS_NOMOVECARET: keep caret at beginning of composition string which already moved in InsertCharacter().
// GCS_CURSORPOS: current caret position is provided by IME.
Sci::Position imeEndToImeCaretU16 = -static_cast<Sci::Position>(wcs.size());
if (!(lParam & CS_NOMOVECARET) && (lParam & GCS_CURSORPOS)) {
imeEndToImeCaretU16 += imc.GetImeCaretPos();
}
if (imeEndToImeCaretU16 != 0) {
// Move back IME caret from current last position to imeCaretPos.
const Sci::Position currentPos = CurrentPosition();
const Sci::Position imeCaretPosDoc = pdoc->GetRelativePositionUTF16(currentPos, imeEndToImeCaretU16);
MoveImeCarets(-currentPos + imeCaretPosDoc);
}
}
if (KoreanIME()) {
view.imeCaretBlockOverride = true;
}
}
EnsureCaretVisible();
ShowCaretAtCurrentPosition();
return 0;
}
namespace {
// Translate message IDs from WM_* and EM_* to Message::* so can partly emulate Windows Edit control
Message SciMessageFromEM(unsigned int iMessage) noexcept {
switch (iMessage) {
case EM_CANPASTE: return Message::CanPaste;
case EM_CANUNDO: return Message::CanUndo;
case EM_EMPTYUNDOBUFFER: return Message::EmptyUndoBuffer;
case EM_FINDTEXTEX: return Message::FindText;
case EM_FORMATRANGE: return Message::FormatRange;
case EM_GETFIRSTVISIBLELINE: return Message::GetFirstVisibleLine;
case EM_GETLINECOUNT: return Message::GetLineCount;
case EM_GETSELTEXT: return Message::GetSelText;
case EM_GETTEXTRANGE: return Message::GetTextRange;
case EM_HIDESELECTION: return Message::HideSelection;
case EM_LINEINDEX: return Message::PositionFromLine;
case EM_LINESCROLL: return Message::LineScroll;
case EM_REPLACESEL: return Message::ReplaceSel;
case EM_SCROLLCARET: return Message::ScrollCaret;
case EM_SETREADONLY: return Message::SetReadOnly;
case WM_CLEAR: return Message::Clear;
case WM_COPY: return Message::Copy;
case WM_CUT: return Message::Cut;
case WM_SETTEXT: return Message::SetText;
case WM_PASTE: return Message::Paste;
case WM_UNDO: return Message::Undo;
}
return static_cast<Message>(iMessage);
}
}
namespace Scintilla::Internal {
UINT CodePageFromCharSet(CharacterSet characterSet, UINT documentCodePage) noexcept {
if (documentCodePage == CpUtf8) {
return CpUtf8;
}
switch (characterSet) {
case CharacterSet::Ansi: return 1252;
// Cyrillic / Turkish or other languages cannot be shown in ANSI mode.
// This fixes such problem. For more information about this fix, check:
// https://github.com/notepad-plus-plus/notepad-plus-plus/issues/5671
// case CharacterSet::Default: return documentCodePage ? documentCodePage : 1252;
case CharacterSet::Default: return documentCodePage;
case CharacterSet::Baltic: return 1257;
case CharacterSet::ChineseBig5: return 950;
case CharacterSet::EastEurope: return 1250;
case CharacterSet::GB2312: return 936;
case CharacterSet::Greek: return 1253;
case CharacterSet::Hangul: return 949;
case CharacterSet::Mac: return 10000;
case CharacterSet::Oem: return 437;
case CharacterSet::Russian: return 1251;
case CharacterSet::ShiftJis: return 932;
case CharacterSet::Turkish: return 1254;
case CharacterSet::Johab: return 1361;
case CharacterSet::Hebrew: return 1255;
case CharacterSet::Arabic: return 1256;
case CharacterSet::Vietnamese: return 1258;
case CharacterSet::Thai: return 874;
case CharacterSet::Iso8859_15: return 28605;
// Not supported
case CharacterSet::Cyrillic: return documentCodePage;
case CharacterSet::Symbol: return documentCodePage;
default: break;
}
return documentCodePage;
}
}
UINT ScintillaWin::CodePageOfDocument() const noexcept {
return CodePageFromCharSet(vs.styles[StyleDefault].characterSet, pdoc->dbcsCodePage);
}
std::string ScintillaWin::EncodeWString(std::wstring_view wsv) {
if (IsUnicodeMode()) {
const size_t len = UTF8Length(wsv);
std::string putf(len, 0);
UTF8FromUTF16(wsv, putf.data(), len);
return putf;
} else {
// Not in Unicode mode so convert from Unicode to current Scintilla code page
return StringEncode(wsv, CodePageOfDocument());
}
}
sptr_t ScintillaWin::GetTextLength() {
if (pdoc->dbcsCodePage == 0 || pdoc->dbcsCodePage == CpUtf8) {
return pdoc->CountUTF16(0, pdoc->Length());
} else {
// Count the number of UTF-16 code units line by line
const UINT cpSrc = CodePageOfDocument();
const Sci::Line lines = pdoc->LinesTotal();
Sci::Position codeUnits = 0;
std::string lineBytes;
for (Sci::Line line = 0; line < lines; line++) {
const Sci::Position start = pdoc->LineStart(line);
const Sci::Position width = pdoc->LineStart(line+1) - start;
lineBytes.resize(width);
pdoc->GetCharRange(lineBytes.data(), start, width);
codeUnits += WideCharLenFromMultiByte(cpSrc, lineBytes);
}
return codeUnits;
}
}
sptr_t ScintillaWin::GetText(uptr_t wParam, sptr_t lParam) {
if (lParam == 0) {
return GetTextLength();
}
if (wParam == 0) {
return 0;
}
wchar_t *ptr = static_cast<wchar_t *>(PtrFromSPtr(lParam));
if (pdoc->Length() == 0) {
*ptr = L'\0';
return 0;
}
const Sci::Position lengthWanted = wParam - 1;
if (IsUnicodeMode()) {
Sci::Position sizeRequestedRange = pdoc->GetRelativePositionUTF16(0, lengthWanted);
if (sizeRequestedRange < 0) {
// Requested more text than there is in the document.
sizeRequestedRange = pdoc->Length();
}
std::string docBytes(sizeRequestedRange, '\0');
pdoc->GetCharRange(&docBytes[0], 0, sizeRequestedRange);
const size_t uLen = UTF16FromUTF8(docBytes, ptr, lengthWanted);
ptr[uLen] = L'\0';
return uLen;
} else {
// Not Unicode mode
// Convert to Unicode using the current Scintilla code page
// Retrieve as UTF-16 line by line
const UINT cpSrc = CodePageOfDocument();
const Sci::Line lines = pdoc->LinesTotal();
Sci::Position codeUnits = 0;
std::string lineBytes;
std::wstring lineAsUTF16;
for (Sci::Line line = 0; line < lines && codeUnits < lengthWanted; line++) {
const Sci::Position start = pdoc->LineStart(line);
const Sci::Position width = pdoc->LineStart(line + 1) - start;
lineBytes.resize(width);
pdoc->GetCharRange(lineBytes.data(), start, width);
const Sci::Position codeUnitsLine = WideCharLenFromMultiByte(cpSrc, lineBytes);
lineAsUTF16.resize(codeUnitsLine);
const Sci::Position lengthLeft = lengthWanted - codeUnits;
WideCharFromMultiByte(cpSrc, lineBytes, lineAsUTF16.data(), lineAsUTF16.length());
const Sci::Position lengthToCopy = std::min(lengthLeft, codeUnitsLine);
lineAsUTF16.copy(ptr + codeUnits, lengthToCopy);
codeUnits += lengthToCopy;
}
ptr[codeUnits] = L'\0';
return codeUnits;
}
}
Window::Cursor ScintillaWin::ContextCursor(Point pt) {
if (inDragDrop == DragDrop::dragging) {
return Window::Cursor::up;
} else {
// Display regular (drag) cursor over selection
if (PointInSelMargin(pt)) {
return GetMarginCursor(pt);
} else if (!SelectionEmpty() && PointInSelection(pt)) {
return Window::Cursor::arrow;
} else if (PointIsHotspot(pt)) {
return Window::Cursor::hand;
} else if (hoverIndicatorPos != Sci::invalidPosition) {
const Sci::Position pos = PositionFromLocation(pt, true, true);
if (pos != Sci::invalidPosition) {
return Window::Cursor::hand;
}
}
}
return Window::Cursor::text;
}
sptr_t ScintillaWin::ShowContextMenu(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
Point pt = PointFromLParam(lParam);
POINT rpt = POINTFromPoint(pt);
::ScreenToClient(MainHWND(), &rpt);
const Point ptClient = PointFromPOINT(rpt);
if (ShouldDisplayPopup(ptClient)) {
if ((pt.x == -1) && (pt.y == -1)) {
// Caused by keyboard so display menu near caret
pt = PointMainCaret();
POINT spt = POINTFromPoint(pt);
::ClientToScreen(MainHWND(), &spt);
pt = PointFromPOINT(spt);
}
ContextMenu(pt);
return 0;
}
return ::DefWindowProc(MainHWND(), iMessage, wParam, lParam);
}
PRectangle ScintillaWin::GetClientRectangle() const {
return rectangleClient;
}
void ScintillaWin::SizeWindow() {
#if defined(USE_D2D)
if (paintState == PaintState::notPainting) {
DropRenderTarget();
} else {
renderTargetValid = false;
}
#endif
//Platform::DebugPrintf("Scintilla WM_SIZE %d %d\n", LOWORD(lParam), HIWORD(lParam));
rectangleClient = wMain.GetClientPosition();
ChangeSize();
}
sptr_t ScintillaWin::MouseMessage(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
switch (iMessage) {
case WM_LBUTTONDOWN: {
// For IME, set the composition string as the result string.
IMContext imc(MainHWND());
if (imc.hIMC) {
::ImmNotifyIME(imc.hIMC, NI_COMPOSITIONSTR, CPS_COMPLETE, 0);
}
//
//Platform::DebugPrintf("Buttdown %d %x %x %x %x %x\n",iMessage, wParam, lParam,
// KeyboardIsKeyDown(VK_SHIFT),
// KeyboardIsKeyDown(VK_CONTROL),
// KeyboardIsKeyDown(VK_MENU));
::SetFocus(MainHWND());
ButtonDownWithModifiers(PointFromLParam(lParam), ::GetMessageTime(),
MouseModifiers(wParam));
}
break;
case WM_LBUTTONUP:
ButtonUpWithModifiers(PointFromLParam(lParam),
::GetMessageTime(), MouseModifiers(wParam));
break;
case WM_RBUTTONDOWN: {
::SetFocus(MainHWND());
const Point pt = PointFromLParam(lParam);
if (!PointInSelection(pt)) {
CancelModes();
SetEmptySelection(PositionFromLocation(PointFromLParam(lParam)));
}
RightButtonDownWithModifiers(pt, ::GetMessageTime(), MouseModifiers(wParam));
}
break;
case WM_MBUTTONDOWN:
::SetFocus(MainHWND());
break;
case WM_MOUSEMOVE: {
cursorIsHidden = false; // to be shown by ButtonMoveWithModifiers
const Point pt = PointFromLParam(lParam);
// Windows might send WM_MOUSEMOVE even though the mouse has not been moved:
// http://blogs.msdn.com/b/oldnewthing/archive/2003/10/01/55108.aspx
if (ptMouseLast != pt) {
SetTrackMouseLeaveEvent(true);
ButtonMoveWithModifiers(pt, ::GetMessageTime(), MouseModifiers(wParam));
}
}
break;
case WM_MOUSELEAVE:
SetTrackMouseLeaveEvent(false);
MouseLeave();
return ::DefWindowProc(MainHWND(), iMessage, wParam, lParam);
case WM_MOUSEWHEEL:
case WM_MOUSEHWHEEL:
if (!mouseWheelCaptures) {
// if the mouse wheel is not captured, test if the mouse
// pointer is over the editor window and if not, don't
// handle the message but pass it on.
RECT rc;
GetWindowRect(MainHWND(), &rc);
const POINT pt = { GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) };
if (!PtInRect(&rc, pt))
return ::DefWindowProc(MainHWND(), iMessage, wParam, lParam);
}
// if autocomplete list active then send mousewheel message to it
if (ac.Active()) {
HWND hWnd = HwndFromWindow(*(ac.lb));
::SendMessage(hWnd, iMessage, wParam, lParam);
break;
}
// Treat Shift+WM_MOUSEWHEEL as horizontal scrolling, not data-zoom.
if (iMessage == WM_MOUSEHWHEEL || (wParam & MK_SHIFT)) {
if (vs.wrap.state != Wrap::None || charsPerScroll == 0) {
return ::DefWindowProc(MainHWND(), iMessage, wParam, lParam);
}
MouseWheelDelta &wheelDelta = (iMessage == WM_MOUSEHWHEEL) ? horizontalWheelDelta : verticalWheelDelta;
if (wheelDelta.Accumulate(wParam)) {
const int charsToScroll = charsPerScroll * wheelDelta.Actions();
const int widthToScroll = static_cast<int>(std::lround(charsToScroll * vs.aveCharWidth));
HorizontalScrollToClamped(xOffset + widthToScroll);
}
return 0;
}
// Either SCROLL vertically or ZOOM. We handle the wheel steppings calculation
if (linesPerScroll != 0 && verticalWheelDelta.Accumulate(wParam)) {
Sci::Line linesToScroll = linesPerScroll;
if (linesPerScroll == WHEEL_PAGESCROLL)
linesToScroll = LinesOnScreen() - 1;
if (linesToScroll == 0) {
linesToScroll = 1;
}
linesToScroll *= verticalWheelDelta.Actions();
if (wParam & MK_CONTROL) {
// Zoom! We play with the font sizes in the styles.
// Number of steps/line is ignored, we just care if sizing up or down
if (linesToScroll < 0) {
KeyCommand(Message::ZoomIn);
} else {
KeyCommand(Message::ZoomOut);
}
} else {
// Scroll
ScrollTo(topLine + linesToScroll);
}
}
return 0;
}
return 0;
}
sptr_t ScintillaWin::KeyMessage(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
switch (iMessage) {
case WM_SYSKEYDOWN:
case WM_KEYDOWN: {
// Platform::DebugPrintf("Keydown %c %c%c%c%c %x %x\n",
// iMessage == WM_KEYDOWN ? 'K' : 'S',
// (lParam & (1 << 24)) ? 'E' : '-',
// KeyboardIsKeyDown(VK_SHIFT) ? 'S' : '-',
// KeyboardIsKeyDown(VK_CONTROL) ? 'C' : '-',
// KeyboardIsKeyDown(VK_MENU) ? 'A' : '-',
// wParam, lParam);
lastKeyDownConsumed = false;
const bool altDown = KeyboardIsKeyDown(VK_MENU);
if (altDown && KeyboardIsNumericKeypadFunction(wParam, lParam)) {
// Don't interpret these as they may be characters entered by number.
return ::DefWindowProc(MainHWND(), iMessage, wParam, lParam);
}
const int ret = KeyDownWithModifiers(
KeyTranslate(wParam),
ModifierFlags(KeyboardIsKeyDown(VK_SHIFT),
KeyboardIsKeyDown(VK_CONTROL),
altDown),
&lastKeyDownConsumed);
if (!ret && !lastKeyDownConsumed) {
return ::DefWindowProc(MainHWND(), iMessage, wParam, lParam);
}
break;
}
case WM_KEYUP:
//Platform::DebugPrintf("S keyup %d %x %x\n",iMessage, wParam, lParam);
return ::DefWindowProc(MainHWND(), iMessage, wParam, lParam);
case WM_CHAR:
HideCursorIfPreferred();
if (((wParam >= 128) || !iscntrl(static_cast<int>(wParam))) || !lastKeyDownConsumed) {
wchar_t wcs[3] = { static_cast<wchar_t>(wParam), 0 };
unsigned int wclen = 1;
if (IS_HIGH_SURROGATE(wcs[0])) {
// If this is a high surrogate character, we need a second one
lastHighSurrogateChar = wcs[0];
return 0;
} else if (IS_LOW_SURROGATE(wcs[0])) {
wcs[1] = wcs[0];
wcs[0] = lastHighSurrogateChar;
lastHighSurrogateChar = 0;
wclen = 2;
}
AddWString(std::wstring_view(wcs, wclen), CharacterSource::DirectInput);
}
return 0;
case WM_UNICHAR:
if (wParam == UNICODE_NOCHAR) {
return TRUE;
} else if (lastKeyDownConsumed) {
return 1;
} else {
wchar_t wcs[3] = { 0 };
const size_t wclen = UTF16FromUTF32Character(static_cast<unsigned int>(wParam), wcs);
AddWString(std::wstring_view(wcs, wclen), CharacterSource::DirectInput);
return FALSE;
}
}
return 0;
}
sptr_t ScintillaWin::FocusMessage(unsigned int iMessage, uptr_t wParam, sptr_t) {
switch (iMessage) {
case WM_KILLFOCUS: {
HWND wOther = reinterpret_cast<HWND>(wParam);
HWND wThis = MainHWND();
const HWND wCT = HwndFromWindow(ct.wCallTip);
if (!wParam ||
!(::IsChild(wThis, wOther) || (wOther == wCT))) {
SetFocusState(false);
DestroySystemCaret();
}
// Explicitly complete any IME composition
IMContext imc(MainHWND());
if (imc.hIMC) {
::ImmNotifyIME(imc.hIMC, NI_COMPOSITIONSTR, CPS_COMPLETE, 0);
}
break;
}
case WM_SETFOCUS:
SetFocusState(true);
DestroySystemCaret();
CreateSystemCaret();
break;
}
return 0;
}
sptr_t ScintillaWin::IMEMessage(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
switch (iMessage) {
case WM_INPUTLANGCHANGE:
return ::DefWindowProc(MainHWND(), iMessage, wParam, lParam);
case WM_INPUTLANGCHANGEREQUEST:
return ::DefWindowProc(MainHWND(), iMessage, wParam, lParam);
case WM_IME_KEYDOWN: {
if (wParam == VK_HANJA) {
ToggleHanja();
}
return ::DefWindowProc(MainHWND(), iMessage, wParam, lParam);
}
case WM_IME_REQUEST: {
if (wParam == IMR_RECONVERTSTRING) {
return ImeOnReconvert(lParam);
}
if (wParam == IMR_DOCUMENTFEED) {
return ImeOnDocumentFeed(lParam);
}
return ::DefWindowProc(MainHWND(), iMessage, wParam, lParam);
}
case WM_IME_STARTCOMPOSITION:
if (KoreanIME() || imeInteraction == IMEInteraction::Inline) {
return 0;
} else {
ImeStartComposition();
return ::DefWindowProc(MainHWND(), iMessage, wParam, lParam);
}
case WM_IME_ENDCOMPOSITION:
ImeEndComposition();
return ::DefWindowProc(MainHWND(), iMessage, wParam, lParam);
case WM_IME_COMPOSITION:
if (KoreanIME() || imeInteraction == IMEInteraction::Inline) {
return HandleCompositionInline(wParam, lParam);
} else {
return HandleCompositionWindowed(wParam, lParam);
}
case WM_IME_SETCONTEXT:
if (KoreanIME() || imeInteraction == IMEInteraction::Inline) {
if (wParam) {
LPARAM NoImeWin = lParam;
NoImeWin = NoImeWin & (~ISC_SHOWUICOMPOSITIONWINDOW);
return ::DefWindowProc(MainHWND(), iMessage, wParam, NoImeWin);
}
}
return ::DefWindowProc(MainHWND(), iMessage, wParam, lParam);
case WM_IME_NOTIFY:
return ::DefWindowProc(MainHWND(), iMessage, wParam, lParam);
}
return 0;
}
sptr_t ScintillaWin::EditMessage(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
switch (iMessage) {
case EM_LINEFROMCHAR:
if (PositionFromUPtr(wParam) < 0) {
wParam = SelectionStart().Position();
}
return pdoc->LineFromPosition(wParam);
case EM_EXLINEFROMCHAR:
return pdoc->LineFromPosition(lParam);
case EM_GETSEL:
if (wParam) {
*reinterpret_cast<DWORD *>(wParam) = static_cast<DWORD>(SelectionStart().Position());
}
if (lParam) {
*reinterpret_cast<DWORD *>(lParam) = static_cast<DWORD>(SelectionEnd().Position());
}
return MAKELRESULT(SelectionStart().Position(), SelectionEnd().Position());
case EM_EXGETSEL: {
if (lParam == 0) {
return 0;
}
CHARRANGE *pCR = reinterpret_cast<CHARRANGE *>(lParam);
pCR->cpMin = static_cast<LONG>(SelectionStart().Position());
pCR->cpMax = static_cast<LONG>(SelectionEnd().Position());
}
break;
case EM_SETSEL: {
Sci::Position nStart = wParam;
Sci::Position nEnd = lParam;
if (nStart == 0 && nEnd == -1) {
nEnd = pdoc->Length();
}
if (nStart == -1) {
nStart = nEnd; // Remove selection
}
SetSelection(nEnd, nStart);
EnsureCaretVisible();
}
break;
case EM_EXSETSEL: {
if (lParam == 0) {
return 0;
}
const CHARRANGE *pCR = reinterpret_cast<const CHARRANGE *>(lParam);
sel.selType = Selection::SelTypes::stream;
if (pCR->cpMin == 0 && pCR->cpMax == -1) {
SetSelection(pCR->cpMin, pdoc->Length());
} else {
SetSelection(pCR->cpMin, pCR->cpMax);
}
EnsureCaretVisible();
return pdoc->LineFromPosition(SelectionStart().Position());
}
}
return 0;
}
sptr_t ScintillaWin::IdleMessage(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
switch (iMessage) {
case SC_WIN_IDLE:
// wParam=dwTickCountInitial, or 0 to initialize. lParam=bSkipUserInputTest
if (idler.state) {
if (lParam || (WAIT_TIMEOUT == MsgWaitForMultipleObjects(0, nullptr, 0, 0, QS_INPUT | QS_HOTKEY))) {
if (Idle()) {
// User input was given priority above, but all events do get a turn. Other
// messages, notifications, etc. will get interleaved with the idle messages.
// However, some things like WM_PAINT are a lower priority, and will not fire
// when there's a message posted. So, several times a second, we stop and let
// the low priority events have a turn (after which the timer will fire again).
// Suppress a warning from Code Analysis that the GetTickCount function
// wraps after 49 days. The WM_TIMER will kick off another SC_WIN_IDLE
// after the wrap.
#ifdef _MSC_VER
#pragma warning(suppress: 28159)
#endif
const DWORD dwCurrent = GetTickCount();
const DWORD dwStart = wParam ? static_cast<DWORD>(wParam) : dwCurrent;
constexpr DWORD maxWorkTime = 50;
if (dwCurrent >= dwStart && dwCurrent > maxWorkTime &&dwCurrent - maxWorkTime < dwStart)
PostMessage(MainHWND(), SC_WIN_IDLE, dwStart, 0);
} else {
SetIdle(false);
}
}
}
break;
case SC_WORK_IDLE:
IdleWork();
break;
}
return 0;
}
sptr_t ScintillaWin::SciMessage(Message iMessage, uptr_t wParam, sptr_t lParam) {
switch (iMessage) {
case Message::GetDirectFunction:
return reinterpret_cast<sptr_t>(DirectFunction);
case Message::GetDirectStatusFunction:
return reinterpret_cast<sptr_t>(DirectStatusFunction);
case Message::GetDirectPointer:
return reinterpret_cast<sptr_t>(this);
#ifdef SCI_OWNREGEX
case Message::GetBoostRegexErrmsg:
{
// copies behavior of SCI_GETTEXT
if (lParam == 0)
return g_exceptionMessage.length() + 1;
if (wParam == 0)
return 0;
char *ptr = CharPtrFromSPtr(lParam);
const Sci_Position len = std::min<Sci_Position>(wParam - 1, g_exceptionMessage.length());
strncpy (ptr, g_exceptionMessage.c_str(), len);
ptr [len] = '\0';
return len;
}
#endif
case Message::GrabFocus:
::SetFocus(MainHWND());
break;
#ifdef INCLUDE_DEPRECATED_FEATURES
case Message::SETKEYSUNICODE:
break;
case Message::GETKEYSUNICODE:
return true;
#endif
case Message::SetTechnology:
if (const Technology technologyNew = static_cast<Technology>(wParam);
(technologyNew == Technology::Default) ||
(technologyNew == Technology::DirectWriteRetain) ||
(technologyNew == Technology::DirectWriteDC) ||
(technologyNew == Technology::DirectWrite)) {
if (technology != technologyNew) {
if (technologyNew > Technology::Default) {
#if defined(USE_D2D)
if (!LoadD2D()) {
// Failed to load Direct2D or DirectWrite so no effect
return 0;
}
UpdateRenderingParams(true);
#else
return 0;
#endif
} else {
bidirectional = Bidirectional::Disabled;
}
DropRenderTarget();
technology = technologyNew;
view.bufferedDraw = technologyNew == Technology::Default;
// Invalidate all cached information including layout.
InvalidateStyleRedraw();
}
}
break;
case Message::SetBidirectional:
if (technology == Technology::Default) {
bidirectional = Bidirectional::Disabled;
} else if (static_cast<Bidirectional>(wParam) <= Bidirectional::R2L) {
bidirectional = static_cast<Bidirectional>(wParam);
}
// Invalidate all cached information including layout.
InvalidateStyleRedraw();
break;
case Message::TargetAsUTF8:
return TargetAsUTF8(CharPtrFromSPtr(lParam));
case Message::EncodedFromUTF8:
return EncodedFromUTF8(ConstCharPtrFromUPtr(wParam),
CharPtrFromSPtr(lParam));
default:
break;
}
return 0;
}
sptr_t ScintillaWin::WndProc(Message iMessage, uptr_t wParam, sptr_t lParam) {
try {
//Platform::DebugPrintf("S M:%x WP:%x L:%x\n", iMessage, wParam, lParam);
const unsigned int msg = static_cast<unsigned int>(iMessage);
switch (msg) {
case WM_CREATE:
ctrlID = ::GetDlgCtrlID(HwndFromWindow(wMain));
UpdateBaseElements();
// Get Intellimouse scroll line parameters
GetMouseParameters();
::RegisterDragDrop(MainHWND(), &dt);
break;
case WM_COMMAND:
Command(LOWORD(wParam));
break;
case WM_PAINT:
return WndPaint();
case WM_PRINTCLIENT: {
HDC hdc = reinterpret_cast<HDC>(wParam);
if (!IsCompatibleDC(hdc)) {
return ::DefWindowProc(MainHWND(), msg, wParam, lParam);
}
FullPaintDC(hdc);
}
break;
case WM_VSCROLL:
ScrollMessage(wParam);
break;
case WM_HSCROLL:
HorizontalScrollMessage(wParam);
break;
case WM_SIZE:
SizeWindow();
break;
case WM_TIMER:
if (wParam == idleTimerID && idler.state) {
SendMessage(MainHWND(), SC_WIN_IDLE, 0, 1);
} else {
TickFor(static_cast<TickReason>(wParam - fineTimerStart));
}
break;
case SC_WIN_IDLE:
case SC_WORK_IDLE:
return IdleMessage(msg, wParam, lParam);
case WM_GETMINMAXINFO:
return ::DefWindowProc(MainHWND(), msg, wParam, lParam);
case WM_LBUTTONDOWN:
case WM_LBUTTONUP:
case WM_RBUTTONDOWN:
case WM_MOUSEMOVE:
case WM_MOUSELEAVE:
case WM_MOUSEWHEEL:
case WM_MOUSEHWHEEL:
return MouseMessage(msg, wParam, lParam);
case WM_SETCURSOR:
if (LOWORD(lParam) == HTCLIENT) {
if (!cursorIsHidden) {
POINT pt;
if (::GetCursorPos(&pt)) {
::ScreenToClient(MainHWND(), &pt);
DisplayCursor(ContextCursor(PointFromPOINT(pt)));
}
}
return TRUE;
} else {
return ::DefWindowProc(MainHWND(), msg, wParam, lParam);
}
case WM_SYSKEYDOWN:
case WM_KEYDOWN:
case WM_KEYUP:
case WM_CHAR:
case WM_UNICHAR:
return KeyMessage(msg, wParam, lParam);
case WM_SETTINGCHANGE:
//Platform::DebugPrintf("Setting Changed\n");
#if defined(USE_D2D)
if (technology != Technology::Default) {
UpdateRenderingParams(true);
}
#endif
UpdateBaseElements();
// Get Intellimouse scroll line parameters
GetMouseParameters();
InvalidateStyleRedraw();
break;
case WM_GETDLGCODE:
return DLGC_HASSETSEL | DLGC_WANTALLKEYS;
case WM_KILLFOCUS:
case WM_SETFOCUS:
return FocusMessage(msg, wParam, lParam);
case WM_SYSCOLORCHANGE:
//Platform::DebugPrintf("Setting Changed\n");
UpdateBaseElements();
InvalidateStyleData();
break;
case WM_DPICHANGED:
dpi = HIWORD(wParam);
InvalidateStyleRedraw();
break;
case WM_DPICHANGED_AFTERPARENT: {
const UINT dpiNow = DpiForWindow(wMain.GetID());
if (dpi != dpiNow) {
dpi = dpiNow;
InvalidateStyleRedraw();
}
}
break;
case WM_CONTEXTMENU:
return ShowContextMenu(msg, wParam, lParam);
case WM_ERASEBKGND:
return 1; // Avoid any background erasure as whole window painted.
case WM_SETREDRAW:
::DefWindowProc(MainHWND(), msg, wParam, lParam);
if (wParam) {
SetScrollBars();
SetVerticalScrollPos();
SetHorizontalScrollPos();
}
return 0;
case WM_CAPTURECHANGED:
capturedMouse = false;
return 0;
// These are not handled in Scintilla and its faster to dispatch them here.
// Also moves time out to here so profile doesn't count lots of empty message calls.
case WM_MOVE:
case WM_MOUSEACTIVATE:
case WM_NCHITTEST:
case WM_NCCALCSIZE:
case WM_NCPAINT:
case WM_NCMOUSEMOVE:
case WM_NCLBUTTONDOWN:
case WM_SYSCOMMAND:
case WM_WINDOWPOSCHANGING:
return ::DefWindowProc(MainHWND(), msg, wParam, lParam);
case WM_WINDOWPOSCHANGED:
#if defined(USE_D2D)
if (technology != Technology::Default) {
if (UpdateRenderingParams(false)) {
DropGraphics();
Redraw();
}
}
#endif
return ::DefWindowProc(MainHWND(), msg, wParam, lParam);
case WM_GETTEXTLENGTH:
return GetTextLength();
case WM_GETTEXT:
return GetText(wParam, lParam);
case WM_INPUTLANGCHANGE:
case WM_INPUTLANGCHANGEREQUEST:
case WM_IME_KEYDOWN:
case WM_IME_REQUEST:
case WM_IME_STARTCOMPOSITION:
case WM_IME_ENDCOMPOSITION:
case WM_IME_COMPOSITION:
case WM_IME_SETCONTEXT:
case WM_IME_NOTIFY:
return IMEMessage(msg, wParam, lParam);
case EM_LINEFROMCHAR:
case EM_EXLINEFROMCHAR:
case EM_GETSEL:
case EM_EXGETSEL:
case EM_SETSEL:
case EM_EXSETSEL:
return EditMessage(msg, wParam, lParam);
}
iMessage = SciMessageFromEM(msg);
switch (iMessage) {
case Message::GetDirectFunction:
case Message::GetDirectStatusFunction:
case Message::GetDirectPointer:
#ifdef SCI_OWNREGEX
case Message::GetBoostRegexErrmsg:
#endif
case Message::GrabFocus:
case Message::SetTechnology:
case Message::SetBidirectional:
case Message::TargetAsUTF8:
case Message::EncodedFromUTF8:
return SciMessage(iMessage, wParam, lParam);
default:
return ScintillaBase::WndProc(iMessage, wParam, lParam);
}
} catch (std::bad_alloc &) {
errorStatus = Status::BadAlloc;
} catch (...) {
errorStatus = Status::Failure;
}
return 0;
}
bool ScintillaWin::ValidCodePage(int codePage) const {
return codePage == 0 || codePage == CpUtf8 ||
codePage == 932 || codePage == 936 || codePage == 949 ||
codePage == 950 || codePage == 1361;
}
std::string ScintillaWin::UTF8FromEncoded(std::string_view encoded) const {
if (IsUnicodeMode()) {
return std::string(encoded);
} else {
// Pivot through wide string
std::wstring ws = StringDecode(encoded, CodePageOfDocument());
return StringEncode(ws, CpUtf8);
}
}
std::string ScintillaWin::EncodedFromUTF8(std::string_view utf8) const {
if (IsUnicodeMode()) {
return std::string(utf8);
} else {
// Pivot through wide string
std::wstring ws = StringDecode(utf8, CpUtf8);
return StringEncode(ws, CodePageOfDocument());
}
}
sptr_t ScintillaWin::DefWndProc(Message iMessage, uptr_t wParam, sptr_t lParam) {
return ::DefWindowProc(MainHWND(), static_cast<unsigned int>(iMessage), wParam, lParam);
}
bool ScintillaWin::FineTickerRunning(TickReason reason) {
return timers[static_cast<size_t>(reason)] != 0;
}
void ScintillaWin::FineTickerStart(TickReason reason, int millis, int tolerance) {
FineTickerCancel(reason);
const UINT_PTR reasonIndex = static_cast<UINT_PTR>(reason);
const UINT_PTR eventID = static_cast<UINT_PTR>(fineTimerStart) + reasonIndex;
if (SetCoalescableTimerFn && tolerance) {
timers[reasonIndex] = SetCoalescableTimerFn(MainHWND(), eventID, millis, nullptr, tolerance);
} else {
timers[reasonIndex] = ::SetTimer(MainHWND(), eventID, millis, nullptr);
}
}
void ScintillaWin::FineTickerCancel(TickReason reason) {
const UINT_PTR reasonIndex = static_cast<UINT_PTR>(reason);
if (timers[reasonIndex]) {
::KillTimer(MainHWND(), timers[reasonIndex]);
timers[reasonIndex] = 0;
}
}
bool ScintillaWin::SetIdle(bool on) {
// On Win32 the Idler is implemented as a Timer on the Scintilla window. This
// takes advantage of the fact that WM_TIMER messages are very low priority,
// and are only posted when the message queue is empty, i.e. during idle time.
if (idler.state != on) {
if (on) {
idler.idlerID = ::SetTimer(MainHWND(), idleTimerID, 10, nullptr)
? reinterpret_cast<IdlerID>(idleTimerID) : 0;
} else {
::KillTimer(MainHWND(), reinterpret_cast<uptr_t>(idler.idlerID));
idler.idlerID = 0;
}
idler.state = idler.idlerID != 0;
}
return idler.state;
}
void ScintillaWin::IdleWork() {
styleIdleInQueue = false;
Editor::IdleWork();
}
void ScintillaWin::QueueIdleWork(WorkItems items, Sci::Position upTo) {
Editor::QueueIdleWork(items, upTo);
if (!styleIdleInQueue) {
if (PostMessage(MainHWND(), SC_WORK_IDLE, 0, 0)) {
styleIdleInQueue = true;
}
}
}
void ScintillaWin::SetMouseCapture(bool on) {
if (mouseDownCaptures) {
if (on) {
::SetCapture(MainHWND());
} else {
::ReleaseCapture();
}
}
capturedMouse = on;
}
bool ScintillaWin::HaveMouseCapture() {
// Cannot just see if GetCapture is this window as the scroll bar also sets capture for the window
return capturedMouse;
//return capturedMouse && (::GetCapture() == MainHWND());
}
void ScintillaWin::SetTrackMouseLeaveEvent(bool on) noexcept {
if (on && !trackedMouseLeave) {
TRACKMOUSEEVENT tme {};
tme.cbSize = sizeof(tme);
tme.dwFlags = TME_LEAVE;
tme.hwndTrack = MainHWND();
tme.dwHoverTime = HOVER_DEFAULT; // Unused but triggers Dr. Memory if not initialized
TrackMouseEvent(&tme);
}
trackedMouseLeave = on;
}
void ScintillaWin::HideCursorIfPreferred() noexcept {
// SPI_GETMOUSEVANISH from OS.
if (typingWithoutCursor && !cursorIsHidden) {
::SetCursor(NULL);
cursorIsHidden = true;
}
}
void ScintillaWin::UpdateBaseElements() {
struct ElementToIndex { Element element; int nIndex; };
const ElementToIndex eti[] = {
{ Element::List, COLOR_WINDOWTEXT },
{ Element::ListBack, COLOR_WINDOW },
{ Element::ListSelected, COLOR_HIGHLIGHTTEXT },
{ Element::ListSelectedBack, COLOR_HIGHLIGHT },
};
bool changed = false;
for (const ElementToIndex &ei : eti) {
changed = vs.SetElementBase(ei.element, ColourRGBA::FromRGB(static_cast<int>(::GetSysColor(ei.nIndex)))) || changed;
}
if (changed) {
Redraw();
}
}
bool ScintillaWin::PaintContains(PRectangle rc) {
if (paintState == PaintState::painting) {
return BoundsContains(rcPaint, hRgnUpdate, rc);
}
return true;
}
void ScintillaWin::ScrollText(Sci::Line /* linesToMove */) {
//Platform::DebugPrintf("ScintillaWin::ScrollText %d\n", linesToMove);
//::ScrollWindow(MainHWND(), 0,
// vs.lineHeight * linesToMove, 0, 0);
//::UpdateWindow(MainHWND());
Redraw();
UpdateSystemCaret();
}
void ScintillaWin::NotifyCaretMove() {
NotifyWinEvent(EVENT_OBJECT_LOCATIONCHANGE, MainHWND(), OBJID_CARET, CHILDID_SELF);
}
void ScintillaWin::UpdateSystemCaret() {
if (hasFocus) {
if (pdoc->TentativeActive()) {
// ongoing inline mode IME composition, don't inform IME of system caret position.
// fix candidate window for Google Japanese IME moved on typing on Win7.
return;
}
if (HasCaretSizeChanged()) {
DestroySystemCaret();
CreateSystemCaret();
}
const Point pos = PointMainCaret();
::SetCaretPos(static_cast<int>(pos.x), static_cast<int>(pos.y));
}
}
bool ScintillaWin::IsVisible() const noexcept {
return GetWindowStyle(MainHWND()) & WS_VISIBLE;
}
int ScintillaWin::SetScrollInfo(int nBar, LPCSCROLLINFO lpsi, BOOL bRedraw) noexcept {
return ::SetScrollInfo(MainHWND(), nBar, lpsi, bRedraw);
}
bool ScintillaWin::GetScrollInfo(int nBar, LPSCROLLINFO lpsi) noexcept {
return ::GetScrollInfo(MainHWND(), nBar, lpsi) ? true : false;
}
// Change the scroll position but avoid repaint if changing to same value
void ScintillaWin::ChangeScrollPos(int barType, Sci::Position pos) {
if (!IsVisible()) {
return;
}
SCROLLINFO sci = {
sizeof(sci), 0, 0, 0, 0, 0, 0
};
sci.fMask = SIF_POS;
GetScrollInfo(barType, &sci);
if (sci.nPos != pos) {
DwellEnd(true);
sci.nPos = static_cast<int>(pos);
SetScrollInfo(barType, &sci, TRUE);
}
}
void ScintillaWin::SetVerticalScrollPos() {
ChangeScrollPos(SB_VERT, topLine);
}
void ScintillaWin::SetHorizontalScrollPos() {
ChangeScrollPos(SB_HORZ, xOffset);
}
bool ScintillaWin::ChangeScrollRange(int nBar, int nMin, int nMax, UINT nPage) noexcept {
SCROLLINFO sci = { sizeof(sci), SIF_PAGE | SIF_RANGE, 0, 0, 0, 0, 0 };
GetScrollInfo(nBar, &sci);
if ((sci.nMin != nMin) || (sci.nMax != nMax) || (sci.nPage != nPage)) {
sci.nMin = nMin;
sci.nMax = nMax;
sci.nPage = nPage;
SetScrollInfo(nBar, &sci, TRUE);
return true;
}
return false;
}
void ScintillaWin::HorizontalScrollToClamped(int xPos) {
const HorizontalScrollRange range = GetHorizontalScrollRange();
HorizontalScrollTo(std::clamp(xPos, 0, range.documentWidth - range.pageWidth + 1));
}
HorizontalScrollRange ScintillaWin::GetHorizontalScrollRange() const {
const PRectangle rcText = GetTextRectangle();
int pageWidth = static_cast<int>(rcText.Width());
const int horizEndPreferred = std::max({ scrollWidth, pageWidth - 1, 0 });
if (!horizontalScrollBarVisible || Wrapping())
pageWidth = horizEndPreferred + 1;
return { pageWidth, horizEndPreferred };
}
bool ScintillaWin::ModifyScrollBars(Sci::Line nMax, Sci::Line nPage) {
if (!IsVisible()) {
return false;
}
bool modified = false;
const Sci::Line vertEndPreferred = nMax;
if (!verticalScrollBarVisible)
nPage = vertEndPreferred + 1;
if (ChangeScrollRange(SB_VERT, 0, static_cast<int>(vertEndPreferred), static_cast<unsigned int>(nPage))) {
modified = true;
}
const HorizontalScrollRange range = GetHorizontalScrollRange();
if (ChangeScrollRange(SB_HORZ, 0, range.documentWidth, range.pageWidth)) {
modified = true;
if (scrollWidth < range.pageWidth) {
HorizontalScrollTo(0);
}
}
return modified;
}
void ScintillaWin::NotifyChange() {
::SendMessage(::GetParent(MainHWND()), WM_COMMAND,
MAKEWPARAM(GetCtrlID(), FocusChange::Change),
reinterpret_cast<LPARAM>(MainHWND()));
}
void ScintillaWin::NotifyFocus(bool focus) {
if (commandEvents) {
::SendMessage(::GetParent(MainHWND()), WM_COMMAND,
MAKEWPARAM(GetCtrlID(), focus ? FocusChange::Setfocus : FocusChange::Killfocus),
reinterpret_cast<LPARAM>(MainHWND()));
}
Editor::NotifyFocus(focus);
}
void ScintillaWin::SetCtrlID(int identifier) {
::SetWindowID(HwndFromWindow(wMain), identifier);
}
int ScintillaWin::GetCtrlID() {
return ::GetDlgCtrlID(HwndFromWindow(wMain));
}
void ScintillaWin::NotifyParent(NotificationData scn) {
scn.nmhdr.hwndFrom = MainHWND();
scn.nmhdr.idFrom = GetCtrlID();
::SendMessage(::GetParent(MainHWND()), WM_NOTIFY,
GetCtrlID(), reinterpret_cast<LPARAM>(&scn));
}
void ScintillaWin::NotifyDoubleClick(Point pt, KeyMod modifiers) {
//Platform::DebugPrintf("ScintillaWin Double click 0\n");
ScintillaBase::NotifyDoubleClick(pt, modifiers);
// Send myself a WM_LBUTTONDBLCLK, so the container can handle it too.
::SendMessage(MainHWND(),
WM_LBUTTONDBLCLK,
FlagSet(modifiers, KeyMod::Shift) ? MK_SHIFT : 0,
MAKELPARAM(pt.x, pt.y));
}
namespace {
class CaseFolderDBCS : public CaseFolderTable {
// Allocate the expandable storage here so that it does not need to be reallocated
// for each call to Fold.
std::vector<wchar_t> utf16Mixed;
std::vector<wchar_t> utf16Folded;
UINT cp;
public:
explicit CaseFolderDBCS(UINT cp_) : cp(cp_) {
}
size_t Fold(char *folded, size_t sizeFolded, const char *mixed, size_t lenMixed) override {
if ((lenMixed == 1) && (sizeFolded > 0)) {
folded[0] = mapping[static_cast<unsigned char>(mixed[0])];
return 1;
} else {
if (lenMixed > utf16Mixed.size()) {
utf16Mixed.resize(lenMixed + 8);
}
const size_t nUtf16Mixed = WideCharFromMultiByte(cp,
std::string_view(mixed, lenMixed),
&utf16Mixed[0],
utf16Mixed.size());
if (nUtf16Mixed == 0) {
// Failed to convert -> bad input
folded[0] = '\0';
return 1;
}
size_t lenFlat = 0;
for (size_t mixIndex=0; mixIndex < nUtf16Mixed; mixIndex++) {
if ((lenFlat + 20) > utf16Folded.size())
utf16Folded.resize(lenFlat + 60);
const char *foldedUTF8 = CaseConvert(utf16Mixed[mixIndex], CaseConversion::fold);
if (foldedUTF8) {
// Maximum length of a case conversion is 6 bytes, 3 characters
wchar_t wFolded[20];
const size_t charsConverted = UTF16FromUTF8(std::string_view(foldedUTF8),
wFolded, std::size(wFolded));
for (size_t j=0; j<charsConverted; j++)
utf16Folded[lenFlat++] = wFolded[j];
} else {
utf16Folded[lenFlat++] = utf16Mixed[mixIndex];
}
}
const std::wstring_view wsvFolded(&utf16Folded[0], lenFlat);
const size_t lenOut = MultiByteLenFromWideChar(cp, wsvFolded);
if (lenOut < sizeFolded) {
MultiByteFromWideChar(cp, wsvFolded, folded, lenOut);
return lenOut;
} else {
return 0;
}
}
}
};
}
std::unique_ptr<CaseFolder> ScintillaWin::CaseFolderForEncoding() {
const UINT cpDest = CodePageOfDocument();
if (cpDest == CpUtf8) {
return std::make_unique<CaseFolderUnicode>();
} else {
if (pdoc->dbcsCodePage == 0) {
std::unique_ptr<CaseFolderTable> pcf = std::make_unique<CaseFolderTable>();
// Only for single byte encodings
for (int i=0x80; i<0x100; i++) {
char sCharacter[2] = "A";
sCharacter[0] = static_cast<char>(i);
wchar_t wCharacter[20];
const unsigned int lengthUTF16 = WideCharFromMultiByte(cpDest, sCharacter,
wCharacter, std::size(wCharacter));
if (lengthUTF16 == 1) {
const char *caseFolded = CaseConvert(wCharacter[0], CaseConversion::fold);
if (caseFolded) {
wchar_t wLower[20];
const size_t charsConverted = UTF16FromUTF8(std::string_view(caseFolded),
wLower, std::size(wLower));
if (charsConverted == 1) {
char sCharacterLowered[20];
const unsigned int lengthConverted = MultiByteFromWideChar(cpDest,
std::wstring_view(wLower, charsConverted),
sCharacterLowered, std::size(sCharacterLowered));
if ((lengthConverted == 1) && (sCharacter[0] != sCharacterLowered[0])) {
pcf->SetTranslation(sCharacter[0], sCharacterLowered[0]);
}
}
}
}
}
return pcf;
} else {
return std::make_unique<CaseFolderDBCS>(cpDest);
}
}
}
std::string ScintillaWin::CaseMapString(const std::string &s, CaseMapping caseMapping) {
if ((s.size() == 0) || (caseMapping == CaseMapping::same))
return s;
const UINT cpDoc = CodePageOfDocument();
if (cpDoc == CpUtf8) {
return CaseConvertString(s, (caseMapping == CaseMapping::upper) ? CaseConversion::upper : CaseConversion::lower);
}
// Change text to UTF-16
const std::wstring wsText = StringDecode(s, cpDoc);
const DWORD mapFlags = LCMAP_LINGUISTIC_CASING |
((caseMapping == CaseMapping::upper) ? LCMAP_UPPERCASE : LCMAP_LOWERCASE);
// Change case
const std::wstring wsConverted = StringMapCase(wsText, mapFlags);
// Change back to document encoding
std::string sConverted = StringEncode(wsConverted, cpDoc);
return sConverted;
}
void ScintillaWin::Copy() {
//Platform::DebugPrintf("Copy\n");
if (!sel.Empty()) {
SelectionText selectedText;
CopySelectionRange(&selectedText);
CopyToClipboard(selectedText);
}
}
bool ScintillaWin::CanPaste() {
if (!Editor::CanPaste())
return false;
return ::IsClipboardFormatAvailable(CF_UNICODETEXT) != FALSE;
}
namespace {
class GlobalMemory {
HGLOBAL hand {};
public:
void *ptr {};
GlobalMemory() noexcept {
}
explicit GlobalMemory(HGLOBAL hand_) noexcept : hand(hand_) {
if (hand) {
ptr = ::GlobalLock(hand);
}
}
// Deleted so GlobalMemory objects can not be copied.
GlobalMemory(const GlobalMemory &) = delete;
GlobalMemory(GlobalMemory &&) = delete;
GlobalMemory &operator=(const GlobalMemory &) = delete;
GlobalMemory &operator=(GlobalMemory &&) = delete;
~GlobalMemory() {
assert(!ptr);
assert(!hand);
}
void Allocate(size_t bytes) noexcept {
assert(!hand);
hand = ::GlobalAlloc(GMEM_MOVEABLE | GMEM_ZEROINIT, bytes);
if (hand) {
ptr = ::GlobalLock(hand);
}
}
HGLOBAL Unlock() noexcept {
assert(ptr);
HGLOBAL handCopy = hand;
::GlobalUnlock(hand);
ptr = nullptr;
hand = {};
return handCopy;
}
void SetClip(UINT uFormat) noexcept {
::SetClipboardData(uFormat, Unlock());
}
operator bool() const noexcept {
return ptr != nullptr;
}
SIZE_T Size() const noexcept {
return ::GlobalSize(hand);
}
};
// OpenClipboard may fail if another application has opened the clipboard.
// Try up to 8 times, with an initial delay of 1 ms and an exponential back off
// for a maximum total delay of 127 ms (1+2+4+8+16+32+64).
bool OpenClipboardRetry(HWND hwnd) noexcept {
for (int attempt=0; attempt<8; attempt++) {
if (attempt > 0) {
::Sleep(1 << (attempt-1));
}
if (::OpenClipboard(hwnd)) {
return true;
}
}
return false;
}
bool IsValidFormatEtc(const FORMATETC *pFE) noexcept {
return pFE->ptd == nullptr &&
(pFE->dwAspect & DVASPECT_CONTENT) != 0 &&
pFE->lindex == -1 &&
(pFE->tymed & TYMED_HGLOBAL) != 0;
}
bool SupportedFormat(const FORMATETC *pFE) noexcept {
return pFE->cfFormat == CF_UNICODETEXT &&
IsValidFormatEtc(pFE);
}
}
void ScintillaWin::Paste() {
if (!::OpenClipboardRetry(MainHWND())) {
return;
}
UndoGroup ug(pdoc);
const bool isLine = SelectionEmpty() &&
(::IsClipboardFormatAvailable(cfLineSelect) || ::IsClipboardFormatAvailable(cfVSLineTag));
ClearSelection(multiPasteMode == MultiPaste::Each);
bool isRectangular = (::IsClipboardFormatAvailable(cfColumnSelect) != 0);
if (!isRectangular) {
// Evaluate "Borland IDE Block Type" explicitly
GlobalMemory memBorlandSelection(::GetClipboardData(cfBorlandIDEBlockType));
if (memBorlandSelection) {
isRectangular = (memBorlandSelection.Size() == 1) && (static_cast<BYTE *>(memBorlandSelection.ptr)[0] == 0x02);
memBorlandSelection.Unlock();
}
}
const PasteShape pasteShape = isRectangular ? PasteShape::rectangular : (isLine ? PasteShape::line : PasteShape::stream);
// Use CF_UNICODETEXT if available
GlobalMemory memUSelection(::GetClipboardData(CF_UNICODETEXT));
if (const wchar_t *uptr = static_cast<const wchar_t *>(memUSelection.ptr)) {
const std::string putf = EncodeWString(uptr);
InsertPasteShape(putf.c_str(), putf.length(), pasteShape);
memUSelection.Unlock();
}
::CloseClipboard();
Redraw();
}
void ScintillaWin::CreateCallTipWindow(PRectangle) {
if (!ct.wCallTip.Created()) {
HWND wnd = ::CreateWindow(callClassName, TEXT("ACallTip"),
WS_POPUP, 100, 100, 150, 20,
MainHWND(), 0,
GetWindowInstance(MainHWND()),
this);
ct.wCallTip = wnd;
ct.wDraw = wnd;
}
}
void ScintillaWin::AddToPopUp(const char *label, int cmd, bool enabled) {
HMENU hmenuPopup = static_cast<HMENU>(popup.GetID());
if (!label[0])
::AppendMenuA(hmenuPopup, MF_SEPARATOR, 0, "");
else if (enabled)
::AppendMenuA(hmenuPopup, MF_STRING, cmd, label);
else
::AppendMenuA(hmenuPopup, MF_STRING | MF_DISABLED | MF_GRAYED, cmd, label);
}
void ScintillaWin::ClaimSelection() {
// Windows does not have a primary selection
}
/// Implement IUnknown
STDMETHODIMP FormatEnumerator::QueryInterface(REFIID riid, PVOID *ppv) {
//Platform::DebugPrintf("EFE QI");
*ppv = nullptr;
if (riid == IID_IUnknown || riid == IID_IEnumFORMATETC) {
*ppv = this;
} else {
return E_NOINTERFACE;
}
AddRef();
return S_OK;
}
STDMETHODIMP_(ULONG)FormatEnumerator::AddRef() {
return ++ref;
}
STDMETHODIMP_(ULONG)FormatEnumerator::Release() {
const ULONG refs = --ref;
if (refs == 0) {
delete this;
}
return refs;
}
/// Implement IEnumFORMATETC
STDMETHODIMP FormatEnumerator::Next(ULONG celt, FORMATETC *rgelt, ULONG *pceltFetched) {
if (!rgelt) return E_POINTER;
ULONG putPos = 0;
while ((pos < formats.size()) && (putPos < celt)) {
rgelt->cfFormat = formats[pos];
rgelt->ptd = nullptr;
rgelt->dwAspect = DVASPECT_CONTENT;
rgelt->lindex = -1;
rgelt->tymed = TYMED_HGLOBAL;
rgelt++;
pos++;
putPos++;
}
if (pceltFetched)
*pceltFetched = putPos;
return putPos ? S_OK : S_FALSE;
}
STDMETHODIMP FormatEnumerator::Skip(ULONG celt) {
pos += celt;
return S_OK;
}
STDMETHODIMP FormatEnumerator::Reset() {
pos = 0;
return S_OK;
}
STDMETHODIMP FormatEnumerator::Clone(IEnumFORMATETC **ppenum) {
FormatEnumerator *pfe;
try {
pfe = new FormatEnumerator(pos, &formats[0], formats.size());
} catch (...) {
return E_OUTOFMEMORY;
}
return pfe->QueryInterface(IID_IEnumFORMATETC, reinterpret_cast<void **>(ppenum));
}
FormatEnumerator::FormatEnumerator(ULONG pos_, const CLIPFORMAT formats_[], size_t formatsLen_) {
ref = 0; // First QI adds first reference...
pos = pos_;
formats.insert(formats.begin(), formats_, formats_+formatsLen_);
}
/// Implement IUnknown
STDMETHODIMP DropSource::QueryInterface(REFIID riid, PVOID *ppv) {
return sci->QueryInterface(riid, ppv);
}
STDMETHODIMP_(ULONG)DropSource::AddRef() {
return sci->AddRef();
}
STDMETHODIMP_(ULONG)DropSource::Release() {
return sci->Release();
}
/// Implement IDropSource
STDMETHODIMP DropSource::QueryContinueDrag(BOOL fEsc, DWORD grfKeyState) {
if (fEsc)
return DRAGDROP_S_CANCEL;
if (!(grfKeyState & MK_LBUTTON))
return DRAGDROP_S_DROP;
return S_OK;
}
STDMETHODIMP DropSource::GiveFeedback(DWORD) {
return DRAGDROP_S_USEDEFAULTCURSORS;
}
/// Implement IUnkown
STDMETHODIMP DataObject::QueryInterface(REFIID riid, PVOID *ppv) {
//Platform::DebugPrintf("DO QI %p\n", this);
return sci->QueryInterface(riid, ppv);
}
STDMETHODIMP_(ULONG)DataObject::AddRef() {
return sci->AddRef();
}
STDMETHODIMP_(ULONG)DataObject::Release() {
return sci->Release();
}
/// Implement IDataObject
STDMETHODIMP DataObject::GetData(FORMATETC *pFEIn, STGMEDIUM *pSTM) {
return sci->GetData(pFEIn, pSTM);
}
STDMETHODIMP DataObject::GetDataHere(FORMATETC *, STGMEDIUM *) {
//Platform::DebugPrintf("DOB GetDataHere\n");
return E_NOTIMPL;
}
STDMETHODIMP DataObject::QueryGetData(FORMATETC *pFE) {
if (sci->DragIsRectangularOK(pFE->cfFormat) && IsValidFormatEtc(pFE)) {
return S_OK;
}
if (SupportedFormat(pFE)) {
return S_OK;
} else {
return S_FALSE;
}
}
STDMETHODIMP DataObject::GetCanonicalFormatEtc(FORMATETC *, FORMATETC *pFEOut) {
//Platform::DebugPrintf("DOB GetCanon\n");
pFEOut->cfFormat = CF_UNICODETEXT;
pFEOut->ptd = nullptr;
pFEOut->dwAspect = DVASPECT_CONTENT;
pFEOut->lindex = -1;
pFEOut->tymed = TYMED_HGLOBAL;
return S_OK;
}
STDMETHODIMP DataObject::SetData(FORMATETC *, STGMEDIUM *, BOOL) {
//Platform::DebugPrintf("DOB SetData\n");
return E_FAIL;
}
STDMETHODIMP DataObject::EnumFormatEtc(DWORD dwDirection, IEnumFORMATETC **ppEnum) {
try {
//Platform::DebugPrintf("DOB EnumFormatEtc %d\n", dwDirection);
if (dwDirection != DATADIR_GET) {
*ppEnum = nullptr;
return E_FAIL;
}
const CLIPFORMAT formats[] = {CF_UNICODETEXT};
FormatEnumerator *pfe = new FormatEnumerator(0, formats, std::size(formats));
return pfe->QueryInterface(IID_IEnumFORMATETC, reinterpret_cast<void **>(ppEnum));
} catch (std::bad_alloc &) {
sci->errorStatus = Status::BadAlloc;
return E_OUTOFMEMORY;
} catch (...) {
sci->errorStatus = Status::Failure;
return E_FAIL;
}
}
STDMETHODIMP DataObject::DAdvise(FORMATETC *, DWORD, IAdviseSink *, PDWORD) {
//Platform::DebugPrintf("DOB DAdvise\n");
return E_FAIL;
}
STDMETHODIMP DataObject::DUnadvise(DWORD) {
//Platform::DebugPrintf("DOB DUnadvise\n");
return E_FAIL;
}
STDMETHODIMP DataObject::EnumDAdvise(IEnumSTATDATA **) {
//Platform::DebugPrintf("DOB EnumDAdvise\n");
return E_FAIL;
}
/// Implement IUnknown
STDMETHODIMP DropTarget::QueryInterface(REFIID riid, PVOID *ppv) {
//Platform::DebugPrintf("DT QI %p\n", this);
return sci->QueryInterface(riid, ppv);
}
STDMETHODIMP_(ULONG)DropTarget::AddRef() {
return sci->AddRef();
}
STDMETHODIMP_(ULONG)DropTarget::Release() {
return sci->Release();
}
/// Implement IDropTarget by forwarding to Scintilla
STDMETHODIMP DropTarget::DragEnter(LPDATAOBJECT pIDataSource, DWORD grfKeyState, POINTL pt, PDWORD pdwEffect) {
try {
return sci->DragEnter(pIDataSource, grfKeyState, pt, pdwEffect);
} catch (...) {
sci->errorStatus = Status::Failure;
}
return E_FAIL;
}
STDMETHODIMP DropTarget::DragOver(DWORD grfKeyState, POINTL pt, PDWORD pdwEffect) {
try {
return sci->DragOver(grfKeyState, pt, pdwEffect);
} catch (...) {
sci->errorStatus = Status::Failure;
}
return E_FAIL;
}
STDMETHODIMP DropTarget::DragLeave() {
try {
return sci->DragLeave();
} catch (...) {
sci->errorStatus = Status::Failure;
}
return E_FAIL;
}
STDMETHODIMP DropTarget::Drop(LPDATAOBJECT pIDataSource, DWORD grfKeyState, POINTL pt, PDWORD pdwEffect) {
try {
return sci->Drop(pIDataSource, grfKeyState, pt, pdwEffect);
} catch (...) {
sci->errorStatus = Status::Failure;
}
return E_FAIL;
}
/**
* DBCS: support Input Method Editor (IME).
* Called when IME Window opened.
*/
void ScintillaWin::ImeStartComposition() {
if (caret.active) {
// Move IME Window to current caret position
IMContext imc(MainHWND());
const Point pos = PointMainCaret();
COMPOSITIONFORM CompForm {};
CompForm.dwStyle = CFS_POINT;
CompForm.ptCurrentPos = POINTFromPoint(pos);
::ImmSetCompositionWindow(imc.hIMC, &CompForm);
// Set font of IME window to same as surrounded text.
if (stylesValid) {
// Since the style creation code has been made platform independent,
// The logfont for the IME is recreated here.
const int styleHere = pdoc->StyleIndexAt(sel.MainCaret());
LOGFONTW lf = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, L""};
int sizeZoomed = vs.styles[styleHere].size + vs.zoomLevel * FontSizeMultiplier;
if (sizeZoomed <= 2 * FontSizeMultiplier) // Hangs if sizeZoomed <= 1
sizeZoomed = 2 * FontSizeMultiplier;
// The negative is to allow for leading
lf.lfHeight = -::MulDiv(sizeZoomed, dpi, 72*FontSizeMultiplier);
lf.lfWeight = static_cast<LONG>(vs.styles[styleHere].weight);
lf.lfItalic = vs.styles[styleHere].italic ? 1 : 0;
lf.lfCharSet = DEFAULT_CHARSET;
lf.lfFaceName[0] = L'\0';
if (vs.styles[styleHere].fontName) {
const char* fontName = vs.styles[styleHere].fontName;
UTF16FromUTF8(std::string_view(fontName), lf.lfFaceName, LF_FACESIZE);
}
::ImmSetCompositionFontW(imc.hIMC, &lf);
}
// Caret is displayed in IME window. So, caret in Scintilla is useless.
DropCaret();
}
}
/** Called when IME Window closed. */
void ScintillaWin::ImeEndComposition() {
// clear IME composition state.
view.imeCaretBlockOverride = false;
pdoc->TentativeUndo();
ShowCaretAtCurrentPosition();
}
LRESULT ScintillaWin::ImeOnReconvert(LPARAM lParam) {
// Reconversion on windows limits within one line without eol.
// Look around: baseStart <-- (|mainStart| -- mainEnd) --> baseEnd.
const Sci::Position mainStart = sel.RangeMain().Start().Position();
const Sci::Position mainEnd = sel.RangeMain().End().Position();
const Sci::Line curLine = pdoc->SciLineFromPosition(mainStart);
if (curLine != pdoc->LineFromPosition(mainEnd))
return 0;
const Sci::Position baseStart = pdoc->LineStart(curLine);
const Sci::Position baseEnd = pdoc->LineEnd(curLine);
if ((baseStart == baseEnd) || (mainEnd > baseEnd))
return 0;
const int codePage = CodePageOfDocument();
const std::wstring rcFeed = StringDecode(RangeText(baseStart, baseEnd), codePage);
const int rcFeedLen = static_cast<int>(rcFeed.length()) * sizeof(wchar_t);
const int rcSize = sizeof(RECONVERTSTRING) + rcFeedLen + sizeof(wchar_t);
RECONVERTSTRING *rc = static_cast<RECONVERTSTRING *>(PtrFromSPtr(lParam));
if (!rc)
return rcSize; // Immediately be back with rcSize of memory block.
wchar_t *rcFeedStart = reinterpret_cast<wchar_t*>(rc + 1);
memcpy(rcFeedStart, &rcFeed[0], rcFeedLen);
std::string rcCompString = RangeText(mainStart, mainEnd);
std::wstring rcCompWstring = StringDecode(rcCompString, codePage);
std::string rcCompStart = RangeText(baseStart, mainStart);
std::wstring rcCompWstart = StringDecode(rcCompStart, codePage);
// Map selection to dwCompStr.
// No selection assumes current caret as rcCompString without length.
rc->dwVersion = 0; // It should be absolutely 0.
rc->dwStrLen = static_cast<DWORD>(rcFeed.length());
rc->dwStrOffset = sizeof(RECONVERTSTRING);
rc->dwCompStrLen = static_cast<DWORD>(rcCompWstring.length());
rc->dwCompStrOffset = static_cast<DWORD>(rcCompWstart.length()) * sizeof(wchar_t);
rc->dwTargetStrLen = rc->dwCompStrLen;
rc->dwTargetStrOffset =rc->dwCompStrOffset;
IMContext imc(MainHWND());
if (!imc.hIMC)
return 0;
if (!::ImmSetCompositionStringW(imc.hIMC, SCS_QUERYRECONVERTSTRING, rc, rcSize, nullptr, 0))
return 0;
// No selection asks IME to fill target fields with its own value.
const int tgWlen = rc->dwTargetStrLen;
const int tgWstart = rc->dwTargetStrOffset / sizeof(wchar_t);
std::string tgCompStart = StringEncode(rcFeed.substr(0, tgWstart), codePage);
std::string tgComp = StringEncode(rcFeed.substr(tgWstart, tgWlen), codePage);
// No selection needs to adjust reconvert start position for IME set.
const int adjust = static_cast<int>(tgCompStart.length() - rcCompStart.length());
const int docCompLen = static_cast<int>(tgComp.length());
// Make place for next composition string to sit in.
for (size_t r=0; r<sel.Count(); r++) {
const Sci::Position rBase = sel.Range(r).Start().Position();
const Sci::Position docCompStart = rBase + adjust;
if (inOverstrike) { // the docCompLen of bytes will be overstriked.
sel.Range(r).caret.SetPosition(docCompStart);
sel.Range(r).anchor.SetPosition(docCompStart);
} else {
// Ensure docCompStart+docCompLen be not beyond lineEnd.
// since docCompLen by byte might break eol.
const Sci::Position lineEnd = pdoc->LineEnd(pdoc->LineFromPosition(rBase));
const Sci::Position overflow = (docCompStart + docCompLen) - lineEnd;
if (overflow > 0) {
pdoc->DeleteChars(docCompStart, docCompLen - overflow);
} else {
pdoc->DeleteChars(docCompStart, docCompLen);
}
}
}
// Immediately Target Input or candidate box choice with GCS_COMPSTR.
return rcSize;
}
LRESULT ScintillaWin::ImeOnDocumentFeed(LPARAM lParam) const {
// This is called while typing preedit string in.
// So there is no selection.
// Limit feed within one line without EOL.
// Look around: lineStart |<-- |compStart| - caret - compEnd| -->| lineEnd.
const Sci::Position curPos = CurrentPosition();
const Sci::Line curLine = pdoc->SciLineFromPosition(curPos);
const Sci::Position lineStart = pdoc->LineStart(curLine);
const Sci::Position lineEnd = pdoc->LineEnd(curLine);
const std::wstring rcFeed = StringDecode(RangeText(lineStart, lineEnd), CodePageOfDocument());
const int rcFeedLen = static_cast<int>(rcFeed.length()) * sizeof(wchar_t);
const int rcSize = sizeof(RECONVERTSTRING) + rcFeedLen + sizeof(wchar_t);
RECONVERTSTRING *rc = static_cast<RECONVERTSTRING *>(PtrFromSPtr(lParam));
if (!rc)
return rcSize;
wchar_t *rcFeedStart = reinterpret_cast<wchar_t*>(rc + 1);
memcpy(rcFeedStart, &rcFeed[0], rcFeedLen);
IMContext imc(MainHWND());
if (!imc.hIMC)
return 0;
const size_t compStrLen = imc.GetCompositionString(GCS_COMPSTR).size();
const int imeCaretPos = imc.GetImeCaretPos();
const Sci::Position compStart = pdoc->GetRelativePositionUTF16(curPos, -imeCaretPos);
const Sci::Position compStrOffset = pdoc->CountUTF16(lineStart, compStart);
// Fill in reconvert structure.
// Let IME to decide what the target is.
rc->dwVersion = 0; //constant
rc->dwStrLen = static_cast<DWORD>(rcFeed.length());
rc->dwStrOffset = sizeof(RECONVERTSTRING); //constant
rc->dwCompStrLen = static_cast<DWORD>(compStrLen);
rc->dwCompStrOffset = static_cast<DWORD>(compStrOffset) * sizeof(wchar_t);
rc->dwTargetStrLen = rc->dwCompStrLen;
rc->dwTargetStrOffset = rc->dwCompStrOffset;
return rcSize; // MS API says reconv structure to be returned.
}
void ScintillaWin::GetMouseParameters() noexcept {
// This retrieves the number of lines per scroll as configured in the Mouse Properties sheet in Control Panel
::SystemParametersInfo(SPI_GETWHEELSCROLLLINES, 0, &linesPerScroll, 0);
if (!::SystemParametersInfo(SPI_GETWHEELSCROLLCHARS, 0, &charsPerScroll, 0)) {
// no horizontal scrolling configuration on Windows XP
charsPerScroll = (linesPerScroll == WHEEL_PAGESCROLL) ? 3 : linesPerScroll;
}
::SystemParametersInfo(SPI_GETMOUSEVANISH, 0, &typingWithoutCursor, 0);
}
void ScintillaWin::CopyToGlobal(GlobalMemory &gmUnicode, const SelectionText &selectedText) {
const std::string_view svSelected(selectedText.Data(), selectedText.LengthWithTerminator());
if (IsUnicodeMode()) {
const size_t uchars = UTF16Length(svSelected);
gmUnicode.Allocate(2 * uchars);
if (gmUnicode) {
UTF16FromUTF8(svSelected,
static_cast<wchar_t *>(gmUnicode.ptr), uchars);
}
} else {
// Not Unicode mode
// Convert to Unicode using the current Scintilla code page
const UINT cpSrc = CodePageFromCharSet(
selectedText.characterSet, selectedText.codePage);
const size_t uLen = WideCharLenFromMultiByte(cpSrc, svSelected);
gmUnicode.Allocate(2 * uLen);
if (gmUnicode) {
WideCharFromMultiByte(cpSrc, svSelected,
static_cast<wchar_t *>(gmUnicode.ptr), uLen);
}
}
}
void ScintillaWin::CopyToClipboard(const SelectionText &selectedText) {
if (!::OpenClipboardRetry(MainHWND())) {
return;
}
::EmptyClipboard();
GlobalMemory uniText;
CopyToGlobal(uniText, selectedText);
if (uniText) {
uniText.SetClip(CF_UNICODETEXT);
}
if (selectedText.rectangular) {
::SetClipboardData(cfColumnSelect, 0);
GlobalMemory borlandSelection;
borlandSelection.Allocate(1);
if (borlandSelection) {
static_cast<BYTE *>(borlandSelection.ptr)[0] = 0x02;
borlandSelection.SetClip(cfBorlandIDEBlockType);
}
}
if (selectedText.lineCopy) {
::SetClipboardData(cfLineSelect, 0);
::SetClipboardData(cfVSLineTag, 0);
}
::CloseClipboard();
}
void ScintillaWin::ScrollMessage(WPARAM wParam) {
//DWORD dwStart = timeGetTime();
//Platform::DebugPrintf("Scroll %x %d\n", wParam, lParam);
SCROLLINFO sci = {};
sci.cbSize = sizeof(sci);
sci.fMask = SIF_ALL;
GetScrollInfo(SB_VERT, &sci);
//Platform::DebugPrintf("ScrollInfo %d mask=%x min=%d max=%d page=%d pos=%d track=%d\n", b,sci.fMask,
//sci.nMin, sci.nMax, sci.nPage, sci.nPos, sci.nTrackPos);
Sci::Line topLineNew = topLine;
switch (LOWORD(wParam)) {
case SB_LINEUP:
topLineNew -= 1;
break;
case SB_LINEDOWN:
topLineNew += 1;
break;
case SB_PAGEUP:
topLineNew -= LinesToScroll(); break;
case SB_PAGEDOWN: topLineNew += LinesToScroll(); break;
case SB_TOP: topLineNew = 0; break;
case SB_BOTTOM: topLineNew = MaxScrollPos(); break;
case SB_THUMBPOSITION: topLineNew = sci.nTrackPos; break;
case SB_THUMBTRACK: topLineNew = sci.nTrackPos; break;
}
ScrollTo(topLineNew);
}
void ScintillaWin::HorizontalScrollMessage(WPARAM wParam) {
int xPos = xOffset;
const PRectangle rcText = GetTextRectangle();
const int pageWidth = static_cast<int>(rcText.Width() * 2 / 3);
switch (LOWORD(wParam)) {
case SB_LINEUP:
xPos -= 20;
break;
case SB_LINEDOWN: // May move past the logical end
xPos += 20;
break;
case SB_PAGEUP:
xPos -= pageWidth;
break;
case SB_PAGEDOWN:
xPos += pageWidth;
break;
case SB_TOP:
xPos = 0;
break;
case SB_BOTTOM:
xPos = scrollWidth;
break;
case SB_THUMBPOSITION:
case SB_THUMBTRACK: {
// Do NOT use wParam, its 16 bit and not enough for very long lines. Its still possible to overflow the 32 bit but you have to try harder =]
SCROLLINFO si {};
si.cbSize = sizeof(si);
si.fMask = SIF_TRACKPOS;
if (GetScrollInfo(SB_HORZ, &si)) {
xPos = si.nTrackPos;
}
}
break;
}
HorizontalScrollToClamped(xPos);
}
/**
* Redraw all of text area.
* This paint will not be abandoned.
*/
void ScintillaWin::FullPaint() {
if ((technology == Technology::Default) || (technology == Technology::DirectWriteDC)) {
HDC hdc = ::GetDC(MainHWND());
FullPaintDC(hdc);
::ReleaseDC(MainHWND(), hdc);
} else {
FullPaintDC({});
}
}
/**
* Redraw all of text area on the specified DC.
* This paint will not be abandoned.
*/
void ScintillaWin::FullPaintDC(HDC hdc) {
paintState = PaintState::painting;
rcPaint = GetClientRectangle();
paintingAllText = true;
PaintDC(hdc);
paintState = PaintState::notPainting;
}
namespace {
bool CompareDevCap(HDC hdc, HDC hOtherDC, int nIndex) noexcept {
return ::GetDeviceCaps(hdc, nIndex) == ::GetDeviceCaps(hOtherDC, nIndex);
}
}
bool ScintillaWin::IsCompatibleDC(HDC hOtherDC) noexcept {
HDC hdc = ::GetDC(MainHWND());
const bool isCompatible =
CompareDevCap(hdc, hOtherDC, TECHNOLOGY) &&
CompareDevCap(hdc, hOtherDC, LOGPIXELSY) &&
CompareDevCap(hdc, hOtherDC, LOGPIXELSX) &&
CompareDevCap(hdc, hOtherDC, BITSPIXEL) &&
CompareDevCap(hdc, hOtherDC, PLANES);
::ReleaseDC(MainHWND(), hdc);
return isCompatible;
}
DWORD ScintillaWin::EffectFromState(DWORD grfKeyState) const noexcept {
// These are the Wordpad semantics.
DWORD dwEffect;
if (inDragDrop == DragDrop::dragging) // Internal defaults to move
dwEffect = DROPEFFECT_MOVE;
else
dwEffect = DROPEFFECT_COPY;
if (grfKeyState & MK_ALT)
dwEffect = DROPEFFECT_MOVE;
if (grfKeyState & MK_CONTROL)
dwEffect = DROPEFFECT_COPY;
return dwEffect;
}
/// Implement IUnknown
STDMETHODIMP ScintillaWin::QueryInterface(REFIID riid, PVOID *ppv) {
*ppv = nullptr;
if (riid == IID_IUnknown) {
*ppv = &dt;
} else if (riid == IID_IDropSource) {
*ppv = &ds;
} else if (riid == IID_IDropTarget) {
*ppv = &dt;
} else if (riid == IID_IDataObject) {
*ppv = &dob;
}
if (!*ppv)
return E_NOINTERFACE;
return S_OK;
}
STDMETHODIMP_(ULONG) ScintillaWin::AddRef() {
return 1;
}
STDMETHODIMP_(ULONG) ScintillaWin::Release() {
return 1;
}
/// Implement IDropTarget
STDMETHODIMP ScintillaWin::DragEnter(LPDATAOBJECT pIDataSource, DWORD grfKeyState,
POINTL, PDWORD pdwEffect) {
if (!pIDataSource )
return E_POINTER;
FORMATETC fmtu = {CF_UNICODETEXT, nullptr, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
const HRESULT hrHasUText = pIDataSource->QueryGetData(&fmtu);
hasOKText = (hrHasUText == S_OK);
if (hasOKText) {
*pdwEffect = EffectFromState(grfKeyState);
} else {
*pdwEffect = DROPEFFECT_NONE;
}
return S_OK;
}
STDMETHODIMP ScintillaWin::DragOver(DWORD grfKeyState, POINTL pt, PDWORD pdwEffect) {
try {
if (!hasOKText || pdoc->IsReadOnly()) {
*pdwEffect = DROPEFFECT_NONE;
return S_OK;
}
*pdwEffect = EffectFromState(grfKeyState);
// Update the cursor.
POINT rpt = {pt.x, pt.y};
::ScreenToClient(MainHWND(), &rpt);
SetDragPosition(SPositionFromLocation(PointFromPOINT(rpt), false, false, UserVirtualSpace()));
return S_OK;
} catch (...) {
errorStatus = Status::Failure;
}
return E_FAIL;
}
STDMETHODIMP ScintillaWin::DragLeave() {
try {
SetDragPosition(SelectionPosition(Sci::invalidPosition));
return S_OK;
} catch (...) {
errorStatus = Status::Failure;
}
return E_FAIL;
}
STDMETHODIMP ScintillaWin::Drop(LPDATAOBJECT pIDataSource, DWORD grfKeyState,
POINTL pt, PDWORD pdwEffect) {
try {
*pdwEffect = EffectFromState(grfKeyState);
if (!pIDataSource)
return E_POINTER;
SetDragPosition(SelectionPosition(Sci::invalidPosition));
std::string putf;
FORMATETC fmtu = {CF_UNICODETEXT, nullptr, DVASPECT_CONTENT, -1, TYMED_HGLOBAL};
STGMEDIUM medium{};
const HRESULT hr = pIDataSource->GetData(&fmtu, &medium);
if (!SUCCEEDED(hr)) {
return hr;
}
if (medium.hGlobal) {
GlobalMemory memUDrop(medium.hGlobal);
if (const wchar_t *uptr = static_cast<const wchar_t *>(memUDrop.ptr)) {
putf = EncodeWString(uptr);
}
memUDrop.Unlock();
}
if (putf.empty()) {
return S_OK;
}
FORMATETC fmtr = {cfColumnSelect, nullptr, DVASPECT_CONTENT, -1, TYMED_HGLOBAL};
const bool isRectangular = S_OK == pIDataSource->QueryGetData(&fmtr);
POINT rpt = {pt.x, pt.y};
::ScreenToClient(MainHWND(), &rpt);
const SelectionPosition movePos = SPositionFromLocation(PointFromPOINT(rpt), false, false, UserVirtualSpace());
DropAt(movePos, putf.c_str(), putf.size(), *pdwEffect == DROPEFFECT_MOVE, isRectangular);
// Free data
::ReleaseStgMedium(&medium);
return S_OK;
} catch (...) {
errorStatus = Status::Failure;
}
return E_FAIL;
}
/// Implement important part of IDataObject
STDMETHODIMP ScintillaWin::GetData(FORMATETC *pFEIn, STGMEDIUM *pSTM) {
if (!SupportedFormat(pFEIn)) {
//Platform::DebugPrintf("DOB GetData No %d %x %x fmt=%x\n", lenDrag, pFEIn, pSTM, pFEIn->cfFormat);
return DATA_E_FORMATETC;
}
pSTM->tymed = TYMED_HGLOBAL;
//Platform::DebugPrintf("DOB GetData OK %d %x %x\n", lenDrag, pFEIn, pSTM);
GlobalMemory uniText;
CopyToGlobal(uniText, drag);
pSTM->hGlobal = uniText ? uniText.Unlock() : 0;
pSTM->pUnkForRelease = nullptr;
return S_OK;
}
void ScintillaWin::Prepare() noexcept {
Platform_Initialise(hInstance);
// Register the CallTip class
WNDCLASSEX wndclassc{};
wndclassc.cbSize = sizeof(wndclassc);
wndclassc.style = CS_GLOBALCLASS | CS_HREDRAW | CS_VREDRAW;
wndclassc.cbWndExtra = sizeof(ScintillaWin *);
wndclassc.hInstance = hInstance;
wndclassc.lpfnWndProc = ScintillaWin::CTWndProc;
wndclassc.hCursor = ::LoadCursor(NULL, IDC_ARROW);
wndclassc.lpszClassName = callClassName;
callClassAtom = ::RegisterClassEx(&wndclassc);
}
bool ScintillaWin::Register(HINSTANCE hInstance_) noexcept {
hInstance = hInstance_;
// Register the Scintilla class
// Register Scintilla as a wide character window
WNDCLASSEXW wndclass {};
wndclass.cbSize = sizeof(wndclass);
wndclass.style = CS_GLOBALCLASS | CS_HREDRAW | CS_VREDRAW;
wndclass.lpfnWndProc = ScintillaWin::SWndProc;
wndclass.cbWndExtra = sizeof(ScintillaWin *);
wndclass.hInstance = hInstance;
wndclass.lpszClassName = L"Scintilla";
scintillaClassAtom = ::RegisterClassExW(&wndclass);
const bool result = 0 != scintillaClassAtom;
return result;
}
bool ScintillaWin::Unregister() noexcept {
bool result = true;
if (0 != scintillaClassAtom) {
if (::UnregisterClass(MAKEINTATOM(scintillaClassAtom), hInstance) == 0) {
result = false;
}
scintillaClassAtom = 0;
}
if (0 != callClassAtom) {
if (::UnregisterClass(MAKEINTATOM(callClassAtom), hInstance) == 0) {
result = false;
}
callClassAtom = 0;
}
return result;
}
bool ScintillaWin::HasCaretSizeChanged() const noexcept {
if (
( (0 != vs.caret.width) && (sysCaretWidth != vs.caret.width) )
|| ((0 != vs.lineHeight) && (sysCaretHeight != vs.lineHeight))
) {
return true;
}
return false;
}
BOOL ScintillaWin::CreateSystemCaret() {
sysCaretWidth = vs.caret.width;
if (0 == sysCaretWidth) {
sysCaretWidth = 1;
}
sysCaretHeight = vs.lineHeight;
const int bitmapSize = (((sysCaretWidth + 15) & ~15) >> 3) *
sysCaretHeight;
std::vector<BYTE> bits(bitmapSize);
sysCaretBitmap = ::CreateBitmap(sysCaretWidth, sysCaretHeight, 1,
1, &bits[0]);
const BOOL retval = ::CreateCaret(
MainHWND(), sysCaretBitmap,
sysCaretWidth, sysCaretHeight);
if (technology == Technology::Default) {
// System caret interferes with Direct2D drawing so only show it for GDI.
::ShowCaret(MainHWND());
}
return retval;
}
BOOL ScintillaWin::DestroySystemCaret() noexcept {
::HideCaret(MainHWND());
const BOOL retval = ::DestroyCaret();
if (sysCaretBitmap) {
::DeleteObject(sysCaretBitmap);
sysCaretBitmap = {};
}
return retval;
}
LRESULT PASCAL ScintillaWin::CTWndProc(
HWND hWnd, UINT iMessage, WPARAM wParam, LPARAM lParam) {
// Find C++ object associated with window.
ScintillaWin *sciThis = static_cast<ScintillaWin *>(PointerFromWindow(hWnd));
try {
// ctp will be zero if WM_CREATE not seen yet
if (sciThis == nullptr) {
if (iMessage == WM_CREATE) {
// Associate CallTip object with window
CREATESTRUCT *pCreate = static_cast<CREATESTRUCT *>(PtrFromSPtr(lParam));
SetWindowPointer(hWnd, pCreate->lpCreateParams);
return 0;
} else {
return ::DefWindowProc(hWnd, iMessage, wParam, lParam);
}
} else {
if (iMessage == WM_NCDESTROY) {
SetWindowPointer(hWnd, nullptr);
return ::DefWindowProc(hWnd, iMessage, wParam, lParam);
} else if (iMessage == WM_PAINT) {
PAINTSTRUCT ps;
::BeginPaint(hWnd, &ps);
std::unique_ptr<Surface> surfaceWindow(Surface::Allocate(sciThis->technology));
#if defined(USE_D2D)
ID2D1HwndRenderTarget *pCTRenderTarget = nullptr;
#endif
RECT rc;
GetClientRect(hWnd, &rc);
if (sciThis->technology == Technology::Default) {
surfaceWindow->Init(ps.hdc, hWnd);
} else {
#if defined(USE_D2D)
const int scaleFactor = sciThis->GetFirstIntegralMultipleDeviceScaleFactor();
// Create a Direct2D render target.
D2D1_HWND_RENDER_TARGET_PROPERTIES dhrtp {};
dhrtp.hwnd = hWnd;
dhrtp.pixelSize = ::GetSizeUFromRect(rc, scaleFactor);
dhrtp.presentOptions = (sciThis->technology == Technology::DirectWriteRetain) ?
D2D1_PRESENT_OPTIONS_RETAIN_CONTENTS : D2D1_PRESENT_OPTIONS_NONE;
D2D1_RENDER_TARGET_PROPERTIES drtp {};
drtp.type = D2D1_RENDER_TARGET_TYPE_DEFAULT;
drtp.pixelFormat.format = DXGI_FORMAT_UNKNOWN;
drtp.pixelFormat.alphaMode = D2D1_ALPHA_MODE_UNKNOWN;
drtp.dpiX = 96.f * scaleFactor;
drtp.dpiY = 96.f * scaleFactor;
drtp.usage = D2D1_RENDER_TARGET_USAGE_NONE;
drtp.minLevel = D2D1_FEATURE_LEVEL_DEFAULT;
if (!SUCCEEDED(pD2DFactory->CreateHwndRenderTarget(drtp, dhrtp, &pCTRenderTarget))) {
surfaceWindow->Release();
::EndPaint(hWnd, &ps);
return 0;
}
// If above SUCCEEDED, then pCTRenderTarget not nullptr
assert(pCTRenderTarget);
if (pCTRenderTarget) {
surfaceWindow->Init(pCTRenderTarget, hWnd);
pCTRenderTarget->BeginDraw();
}
#endif
}
surfaceWindow->SetMode(sciThis->CurrentSurfaceMode());
sciThis->SetRenderingParams(surfaceWindow.get());
sciThis->ct.PaintCT(surfaceWindow.get());
#if defined(USE_D2D)
if (pCTRenderTarget)
pCTRenderTarget->EndDraw();
#endif
surfaceWindow->Release();
#if defined(USE_D2D)
ReleaseUnknown(pCTRenderTarget);
#endif
::EndPaint(hWnd, &ps);
return 0;
} else if ((iMessage == WM_NCLBUTTONDOWN) || (iMessage == WM_NCLBUTTONDBLCLK)) {
POINT pt = { GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) };
ScreenToClient(hWnd, &pt);
sciThis->ct.MouseClick(PointFromPOINT(pt));
sciThis->CallTipClick();
return 0;
} else if (iMessage == WM_LBUTTONDOWN) {
// This does not fire due to the hit test code
sciThis->ct.MouseClick(PointFromLParam(lParam));
sciThis->CallTipClick();
return 0;
} else if (iMessage == WM_SETCURSOR) {
::SetCursor(::LoadCursor(NULL, IDC_ARROW));
return 0;
} else if (iMessage == WM_NCHITTEST) {
return HTCAPTION;
} else {
return ::DefWindowProc(hWnd, iMessage, wParam, lParam);
}
}
} catch (...) {
sciThis->errorStatus = Status::Failure;
}
return ::DefWindowProc(hWnd, iMessage, wParam, lParam);
}
sptr_t ScintillaWin::DirectFunction(
sptr_t ptr, UINT iMessage, uptr_t wParam, sptr_t lParam) {
ScintillaWin *sci = reinterpret_cast<ScintillaWin *>(ptr);
PLATFORM_ASSERT(::GetCurrentThreadId() == ::GetWindowThreadProcessId(sci->MainHWND(), nullptr));
return sci->WndProc(static_cast<Message>(iMessage), wParam, lParam);
}
sptr_t ScintillaWin::DirectStatusFunction(
sptr_t ptr, UINT iMessage, uptr_t wParam, sptr_t lParam, int *pStatus) {
ScintillaWin *sci = reinterpret_cast<ScintillaWin *>(ptr);
PLATFORM_ASSERT(::GetCurrentThreadId() == ::GetWindowThreadProcessId(sci->MainHWND(), nullptr));
const sptr_t returnValue = sci->WndProc(static_cast<Message>(iMessage), wParam, lParam);
*pStatus = static_cast<int>(sci->errorStatus);
return returnValue;
}
namespace Scintilla::Internal {
sptr_t DirectFunction(
ScintillaWin *sci, UINT iMessage, uptr_t wParam, sptr_t lParam) {
return sci->WndProc(static_cast<Message>(iMessage), wParam, lParam);
}
}
LRESULT PASCAL ScintillaWin::SWndProc(
HWND hWnd, UINT iMessage, WPARAM wParam, LPARAM lParam) {
//Platform::DebugPrintf("S W:%x M:%x WP:%x L:%x\n", hWnd, iMessage, wParam, lParam);
// Find C++ object associated with window.
ScintillaWin *sci = static_cast<ScintillaWin *>(PointerFromWindow(hWnd));
// sci will be zero if WM_CREATE not seen yet
if (sci == nullptr) {
try {
if (iMessage == WM_CREATE) {
static std::once_flag once;
std::call_once(once, Prepare);
// Create C++ object associated with window
sci = new ScintillaWin(hWnd);
SetWindowPointer(hWnd, sci);
return sci->WndProc(static_cast<Message>(iMessage), wParam, lParam);
}
} catch (...) {
}
return ::DefWindowProc(hWnd, iMessage, wParam, lParam);
} else {
if (iMessage == WM_NCDESTROY) {
try {
sci->Finalise();
delete sci;
} catch (...) {
}
SetWindowPointer(hWnd, nullptr);
return ::DefWindowProc(hWnd, iMessage, wParam, lParam);
} else {
return sci->WndProc(static_cast<Message>(iMessage), wParam, lParam);
}
}
}
// This function is externally visible so it can be called from container when building statically.
// Must be called once only.
extern "C" int Scintilla_RegisterClasses(void *hInstance) {
const bool result = ScintillaWin::Register(static_cast<HINSTANCE>(hInstance));
return result;
}
namespace Scintilla::Internal {
int ResourcesRelease(bool fromDllMain) noexcept {
const bool result = ScintillaWin::Unregister();
Platform_Finalise(fromDllMain);
return result;
}
int RegisterClasses(void *hInstance) noexcept {
const bool result = ScintillaWin::Register(static_cast<HINSTANCE>(hInstance));
return result;
}
}
// This function is externally visible so it can be called from container when building statically.
extern "C" int Scintilla_ReleaseResources() {
return Scintilla::Internal::ResourcesRelease(false);
}
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