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notepad-plus-plus/scintilla/gtk/PlatGTK.cxx

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// Scintilla source code edit control
// PlatGTK.cxx - implementation of platform facilities on GTK+/Linux
// Copyright 1998-2004 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <math.h>
#include <string>
#include <vector>
#include <map>
#include <glib.h>
#include <gmodule.h>
#include <gdk/gdk.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "Platform.h"
#include "Scintilla.h"
#include "ScintillaWidget.h"
#include "UniConversion.h"
#include "XPM.h"
#if defined(__clang__)
// Clang 3.0 incorrectly displays sentinel warnings. Fixed by clang 3.1.
#pragma GCC diagnostic ignored "-Wsentinel"
#endif
/* GLIB must be compiled with thread support, otherwise we
will bail on trying to use locks, and that could lead to
problems for someone. `glib-config --libs gthread` needs
to be used to get the glib libraries for linking, otherwise
g_thread_init will fail */
#define USE_LOCK defined(G_THREADS_ENABLED) && !defined(G_THREADS_IMPL_NONE)
#include "Converter.h"
#if GTK_CHECK_VERSION(2,20,0)
#define IS_WIDGET_FOCUSSED(w) (gtk_widget_has_focus(GTK_WIDGET(w)))
#else
#define IS_WIDGET_FOCUSSED(w) (GTK_WIDGET_HAS_FOCUS(w))
#endif
// The Pango version guard for pango_units_from_double and pango_units_to_double
// is more complex than simply implementing these here.
static int pangoUnitsFromDouble(double d) {
return static_cast<int>(d * PANGO_SCALE + 0.5);
}
static double doubleFromPangoUnits(int pu) {
return static_cast<double>(pu) / PANGO_SCALE;
}
static cairo_surface_t *CreateSimilarSurface(GdkWindow *window, cairo_content_t content, int width, int height) {
#if GTK_CHECK_VERSION(2,22,0)
return gdk_window_create_similar_surface(window, content, width, height);
#else
cairo_surface_t *window_surface, *surface;
g_return_val_if_fail(GDK_IS_WINDOW(window), NULL);
window_surface = GDK_DRAWABLE_GET_CLASS(window)->ref_cairo_surface(window);
surface = cairo_surface_create_similar(window_surface, content, width, height);
cairo_surface_destroy(window_surface);
return surface;
#endif
}
static GdkWindow *WindowFromWidget(GtkWidget *w) {
#if GTK_CHECK_VERSION(3,0,0)
return gtk_widget_get_window(w);
#else
return w->window;
#endif
}
#ifdef _MSC_VER
// Ignore unreferenced local functions in GTK+ headers
#pragma warning(disable: 4505)
#endif
#ifdef SCI_NAMESPACE
using namespace Scintilla;
#endif
enum encodingType { singleByte, UTF8, dbcs};
struct LOGFONT {
int size;
int weight;
bool italic;
int characterSet;
char faceName[300];
};
#if USE_LOCK
static GMutex *fontMutex = NULL;
static void InitializeGLIBThreads() {
#if !GLIB_CHECK_VERSION(2,31,0)
if (!g_thread_supported()) {
g_thread_init(NULL);
}
#endif
}
#endif
static void FontMutexAllocate() {
#if USE_LOCK
if (!fontMutex) {
InitializeGLIBThreads();
#if GLIB_CHECK_VERSION(2,31,0)
fontMutex = g_new(GMutex, 1);
g_mutex_init(fontMutex);
#else
fontMutex = g_mutex_new();
#endif
}
#endif
}
static void FontMutexFree() {
#if USE_LOCK
if (fontMutex) {
#if GLIB_CHECK_VERSION(2,31,0)
g_mutex_clear(fontMutex);
g_free(fontMutex);
#else
g_mutex_free(fontMutex);
#endif
fontMutex = NULL;
}
#endif
}
static void FontMutexLock() {
#if USE_LOCK
g_mutex_lock(fontMutex);
#endif
}
static void FontMutexUnlock() {
#if USE_LOCK
if (fontMutex) {
g_mutex_unlock(fontMutex);
}
#endif
}
// Holds a PangoFontDescription*.
class FontHandle {
XYPOSITION width[128];
encodingType et;
public:
int ascent;
PangoFontDescription *pfd;
int characterSet;
FontHandle() : et(singleByte), ascent(0), pfd(0), characterSet(-1) {
ResetWidths(et);
}
FontHandle(PangoFontDescription *pfd_, int characterSet_) {
et = singleByte;
ascent = 0;
pfd = pfd_;
characterSet = characterSet_;
ResetWidths(et);
}
~FontHandle() {
if (pfd)
pango_font_description_free(pfd);
pfd = 0;
}
void ResetWidths(encodingType et_) {
et = et_;
for (int i=0; i<=127; i++) {
width[i] = 0;
}
}
XYPOSITION CharWidth(unsigned char ch, encodingType et_) const {
XYPOSITION w = 0;
FontMutexLock();
if ((ch <= 127) && (et == et_)) {
w = width[ch];
}
FontMutexUnlock();
return w;
}
void SetCharWidth(unsigned char ch, XYPOSITION w, encodingType et_) {
if (ch <= 127) {
FontMutexLock();
if (et != et_) {
ResetWidths(et_);
}
width[ch] = w;
FontMutexUnlock();
}
}
};
// X has a 16 bit coordinate space, so stop drawing here to avoid wrapping
static const int maxCoordinate = 32000;
static FontHandle *PFont(Font &f) {
return reinterpret_cast<FontHandle *>(f.GetID());
}
static GtkWidget *PWidget(WindowID wid) {
return reinterpret_cast<GtkWidget *>(wid);
}
Point Point::FromLong(long lpoint) {
return Point(
Platform::LowShortFromLong(lpoint),
Platform::HighShortFromLong(lpoint));
}
static void SetLogFont(LOGFONT &lf, const char *faceName, int characterSet, float size, int weight, bool italic) {
memset(&lf, 0, sizeof(lf));
lf.size = size;
lf.weight = weight;
lf.italic = italic;
lf.characterSet = characterSet;
strncpy(lf.faceName, faceName, sizeof(lf.faceName) - 1);
}
/**
* Create a hash from the parameters for a font to allow easy checking for identity.
* If one font is the same as another, its hash will be the same, but if the hash is the
* same then they may still be different.
*/
static int HashFont(const FontParameters &fp) {
return
static_cast<int>(fp.size+0.5) ^
(fp.characterSet << 10) ^
((fp.weight / 100) << 12) ^
(fp.italic ? 0x20000000 : 0) ^
fp.faceName[0];
}
class FontCached : Font {
FontCached *next;
int usage;
LOGFONT lf;
int hash;
FontCached(const FontParameters &fp);
~FontCached() {}
bool SameAs(const FontParameters &fp);
virtual void Release();
static FontID CreateNewFont(const FontParameters &fp);
static FontCached *first;
public:
static FontID FindOrCreate(const FontParameters &fp);
static void ReleaseId(FontID fid_);
static void ReleaseAll();
};
FontCached *FontCached::first = 0;
FontCached::FontCached(const FontParameters &fp) :
next(0), usage(0), hash(0) {
::SetLogFont(lf, fp.faceName, fp.characterSet, fp.size, fp.weight, fp.italic);
hash = HashFont(fp);
fid = CreateNewFont(fp);
usage = 1;
}
bool FontCached::SameAs(const FontParameters &fp) {
return
lf.size == fp.size &&
lf.weight == fp.weight &&
lf.italic == fp.italic &&
lf.characterSet == fp.characterSet &&
0 == strcmp(lf.faceName, fp.faceName);
}
void FontCached::Release() {
if (fid)
delete PFont(*this);
fid = 0;
}
FontID FontCached::FindOrCreate(const FontParameters &fp) {
FontID ret = 0;
FontMutexLock();
int hashFind = HashFont(fp);
for (FontCached *cur = first; cur; cur = cur->next) {
if ((cur->hash == hashFind) &&
cur->SameAs(fp)) {
cur->usage++;
ret = cur->fid;
}
}
if (ret == 0) {
FontCached *fc = new FontCached(fp);
fc->next = first;
first = fc;
ret = fc->fid;
}
FontMutexUnlock();
return ret;
}
void FontCached::ReleaseId(FontID fid_) {
FontMutexLock();
FontCached **pcur = &first;
for (FontCached *cur = first; cur; cur = cur->next) {
if (cur->fid == fid_) {
cur->usage--;
if (cur->usage == 0) {
*pcur = cur->next;
cur->Release();
cur->next = 0;
delete cur;
}
break;
}
pcur = &cur->next;
}
FontMutexUnlock();
}
void FontCached::ReleaseAll() {
while (first) {
ReleaseId(first->GetID());
}
}
FontID FontCached::CreateNewFont(const FontParameters &fp) {
PangoFontDescription *pfd = pango_font_description_new();
if (pfd) {
pango_font_description_set_family(pfd,
(fp.faceName[0] == '!') ? fp.faceName+1 : fp.faceName);
pango_font_description_set_size(pfd, pangoUnitsFromDouble(fp.size));
pango_font_description_set_weight(pfd, static_cast<PangoWeight>(fp.weight));
pango_font_description_set_style(pfd, fp.italic ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL);
return new FontHandle(pfd, fp.characterSet);
}
return new FontHandle();
}
Font::Font() : fid(0) {}
Font::~Font() {}
void Font::Create(const FontParameters &fp) {
Release();
fid = FontCached::FindOrCreate(fp);
}
void Font::Release() {
if (fid)
FontCached::ReleaseId(fid);
fid = 0;
}
// Required on OS X
#ifdef SCI_NAMESPACE
namespace Scintilla {
#endif
// SurfaceID is a cairo_t*
class SurfaceImpl : public Surface {
encodingType et;
cairo_t *context;
cairo_surface_t *psurf;
int x;
int y;
bool inited;
bool createdGC;
PangoContext *pcontext;
PangoLayout *layout;
Converter conv;
int characterSet;
void SetConverter(int characterSet_);
public:
SurfaceImpl();
virtual ~SurfaceImpl();
void Init(WindowID wid);
void Init(SurfaceID sid, WindowID wid);
void InitPixMap(int width, int height, Surface *surface_, WindowID wid);
void Release();
bool Initialised();
void PenColour(ColourDesired fore);
int LogPixelsY();
int DeviceHeightFont(int points);
void MoveTo(int x_, int y_);
void LineTo(int x_, int y_);
void Polygon(Point *pts, int npts, ColourDesired fore, ColourDesired back);
void RectangleDraw(PRectangle rc, ColourDesired fore, ColourDesired back);
void FillRectangle(PRectangle rc, ColourDesired back);
void FillRectangle(PRectangle rc, Surface &surfacePattern);
void RoundedRectangle(PRectangle rc, ColourDesired fore, ColourDesired back);
void AlphaRectangle(PRectangle rc, int cornerSize, ColourDesired fill, int alphaFill,
ColourDesired outline, int alphaOutline, int flags);
void DrawRGBAImage(PRectangle rc, int width, int height, const unsigned char *pixelsImage);
void Ellipse(PRectangle rc, ColourDesired fore, ColourDesired back);
void Copy(PRectangle rc, Point from, Surface &surfaceSource);
void DrawTextBase(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len, ColourDesired fore);
void DrawTextNoClip(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len, ColourDesired fore, ColourDesired back);
void DrawTextClipped(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len, ColourDesired fore, ColourDesired back);
void DrawTextTransparent(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len, ColourDesired fore);
void MeasureWidths(Font &font_, const char *s, int len, XYPOSITION *positions);
XYPOSITION WidthText(Font &font_, const char *s, int len);
XYPOSITION WidthChar(Font &font_, char ch);
XYPOSITION Ascent(Font &font_);
XYPOSITION Descent(Font &font_);
XYPOSITION InternalLeading(Font &font_);
XYPOSITION ExternalLeading(Font &font_);
XYPOSITION Height(Font &font_);
XYPOSITION AverageCharWidth(Font &font_);
void SetClip(PRectangle rc);
void FlushCachedState();
void SetUnicodeMode(bool unicodeMode_);
void SetDBCSMode(int codePage);
};
#ifdef SCI_NAMESPACE
}
#endif
const char *CharacterSetID(int characterSet) {
switch (characterSet) {
case SC_CHARSET_ANSI:
return "";
case SC_CHARSET_DEFAULT:
return "ISO-8859-1";
case SC_CHARSET_BALTIC:
return "ISO-8859-13";
case SC_CHARSET_CHINESEBIG5:
return "BIG-5";
case SC_CHARSET_EASTEUROPE:
return "ISO-8859-2";
case SC_CHARSET_GB2312:
return "CP936";
case SC_CHARSET_GREEK:
return "ISO-8859-7";
case SC_CHARSET_HANGUL:
return "CP949";
case SC_CHARSET_MAC:
return "MACINTOSH";
case SC_CHARSET_OEM:
return "ASCII";
case SC_CHARSET_RUSSIAN:
return "KOI8-R";
case SC_CHARSET_CYRILLIC:
return "CP1251";
case SC_CHARSET_SHIFTJIS:
return "SHIFT-JIS";
case SC_CHARSET_SYMBOL:
return "";
case SC_CHARSET_TURKISH:
return "ISO-8859-9";
case SC_CHARSET_JOHAB:
return "CP1361";
case SC_CHARSET_HEBREW:
return "ISO-8859-8";
case SC_CHARSET_ARABIC:
return "ISO-8859-6";
case SC_CHARSET_VIETNAMESE:
return "";
case SC_CHARSET_THAI:
return "ISO-8859-11";
case SC_CHARSET_8859_15:
return "ISO-8859-15";
default:
return "";
}
}
void SurfaceImpl::SetConverter(int characterSet_) {
if (characterSet != characterSet_) {
characterSet = characterSet_;
conv.Open("UTF-8", CharacterSetID(characterSet), false);
}
}
SurfaceImpl::SurfaceImpl() : et(singleByte),
context(0),
psurf(0),
x(0), y(0), inited(false), createdGC(false)
, pcontext(0), layout(0), characterSet(-1) {
}
SurfaceImpl::~SurfaceImpl() {
Release();
}
void SurfaceImpl::Release() {
et = singleByte;
if (createdGC) {
createdGC = false;
cairo_destroy(context);
}
context = 0;
if (psurf)
cairo_surface_destroy(psurf);
psurf = 0;
if (layout)
g_object_unref(layout);
layout = 0;
if (pcontext)
g_object_unref(pcontext);
pcontext = 0;
conv.Close();
characterSet = -1;
x = 0;
y = 0;
inited = false;
createdGC = false;
}
bool SurfaceImpl::Initialised() {
return inited;
}
void SurfaceImpl::Init(WindowID wid) {
Release();
PLATFORM_ASSERT(wid);
#if GTK_CHECK_VERSION(3,0,0)
GdkWindow *drawable_ = gtk_widget_get_window(PWidget(wid));
#else
GdkDrawable *drawable_ = GDK_DRAWABLE(PWidget(wid)->window);
#endif
if (drawable_) {
context = gdk_cairo_create(drawable_);
PLATFORM_ASSERT(context);
} else {
// Shouldn't happen with valid window but may when calls made before
// window completely allocated and mapped.
psurf = cairo_image_surface_create(CAIRO_FORMAT_RGB24, 1, 1);
context = cairo_create(psurf);
}
createdGC = true;
pcontext = gtk_widget_create_pango_context(PWidget(wid));
PLATFORM_ASSERT(pcontext);
layout = pango_layout_new(pcontext);
PLATFORM_ASSERT(layout);
inited = true;
}
void SurfaceImpl::Init(SurfaceID sid, WindowID wid) {
PLATFORM_ASSERT(sid);
Release();
PLATFORM_ASSERT(wid);
context = cairo_reference(reinterpret_cast<cairo_t *>(sid));
pcontext = gtk_widget_create_pango_context(PWidget(wid));
// update the Pango context in case sid isn't the widget's surface
pango_cairo_update_context(context, pcontext);
layout = pango_layout_new(pcontext);
cairo_set_line_width(context, 1);
createdGC = true;
inited = true;
}
void SurfaceImpl::InitPixMap(int width, int height, Surface *surface_, WindowID wid) {
PLATFORM_ASSERT(surface_);
Release();
SurfaceImpl *surfImpl = static_cast<SurfaceImpl *>(surface_);
PLATFORM_ASSERT(wid);
context = cairo_reference(surfImpl->context);
pcontext = gtk_widget_create_pango_context(PWidget(wid));
// update the Pango context in case surface_ isn't the widget's surface
pango_cairo_update_context(context, pcontext);
PLATFORM_ASSERT(pcontext);
layout = pango_layout_new(pcontext);
PLATFORM_ASSERT(layout);
if (height > 0 && width > 0)
psurf = CreateSimilarSurface(
WindowFromWidget(PWidget(wid)),
CAIRO_CONTENT_COLOR_ALPHA, width, height);
cairo_destroy(context);
context = cairo_create(psurf);
cairo_rectangle(context, 0, 0, width, height);
cairo_set_source_rgb(context, 1.0, 0, 0);
cairo_fill(context);
// This produces sharp drawing more similar to GDK:
//cairo_set_antialias(context, CAIRO_ANTIALIAS_NONE);
cairo_set_line_width(context, 1);
createdGC = true;
inited = true;
}
void SurfaceImpl::PenColour(ColourDesired fore) {
if (context) {
ColourDesired cdFore(fore.AsLong());
cairo_set_source_rgb(context,
cdFore.GetRed() / 255.0,
cdFore.GetGreen() / 255.0,
cdFore.GetBlue() / 255.0);
}
}
int SurfaceImpl::LogPixelsY() {
return 72;
}
int SurfaceImpl::DeviceHeightFont(int points) {
int logPix = LogPixelsY();
return (points * logPix + logPix / 2) / 72;
}
void SurfaceImpl::MoveTo(int x_, int y_) {
x = x_;
y = y_;
}
static int Delta(int difference) {
if (difference < 0)
return -1;
else if (difference > 0)
return 1;
else
return 0;
}
void SurfaceImpl::LineTo(int x_, int y_) {
// cairo_line_to draws the end position, unlike Win32 or GDK with GDK_CAP_NOT_LAST.
// For simple cases, move back one pixel from end.
if (context) {
int xDiff = x_ - x;
int xDelta = Delta(xDiff);
int yDiff = y_ - y;
int yDelta = Delta(yDiff);
if ((xDiff == 0) || (yDiff == 0)) {
// Horizontal or vertical lines can be more precisely drawn as a filled rectangle
int xEnd = x_ - xDelta;
int left = Platform::Minimum(x, xEnd);
int width = abs(x - xEnd) + 1;
int yEnd = y_ - yDelta;
int top = Platform::Minimum(y, yEnd);
int height = abs(y - yEnd) + 1;
cairo_rectangle(context, left, top, width, height);
cairo_fill(context);
} else if ((abs(xDiff) == abs(yDiff))) {
// 45 degree slope
cairo_move_to(context, x + 0.5, y + 0.5);
cairo_line_to(context, x_ + 0.5 - xDelta, y_ + 0.5 - yDelta);
} else {
// Line has a different slope so difficult to avoid last pixel
cairo_move_to(context, x + 0.5, y + 0.5);
cairo_line_to(context, x_ + 0.5, y_ + 0.5);
}
cairo_stroke(context);
}
x = x_;
y = y_;
}
void SurfaceImpl::Polygon(Point *pts, int npts, ColourDesired fore,
ColourDesired back) {
PenColour(back);
cairo_move_to(context, pts[0].x + 0.5, pts[0].y + 0.5);
for (int i = 1;i < npts;i++) {
cairo_line_to(context, pts[i].x + 0.5, pts[i].y + 0.5);
}
cairo_close_path(context);
cairo_fill_preserve(context);
PenColour(fore);
cairo_stroke(context);
}
void SurfaceImpl::RectangleDraw(PRectangle rc, ColourDesired fore, ColourDesired back) {
if (context) {
cairo_rectangle(context, rc.left + 0.5, rc.top + 0.5,
rc.right - rc.left - 1, rc.bottom - rc.top - 1);
PenColour(back);
cairo_fill_preserve(context);
PenColour(fore);
cairo_stroke(context);
}
}
void SurfaceImpl::FillRectangle(PRectangle rc, ColourDesired back) {
PenColour(back);
if (context && (rc.left < maxCoordinate)) { // Protect against out of range
rc.left = lround(rc.left);
rc.right = lround(rc.right);
cairo_rectangle(context, rc.left, rc.top,
rc.right - rc.left, rc.bottom - rc.top);
cairo_fill(context);
}
}
void SurfaceImpl::FillRectangle(PRectangle rc, Surface &surfacePattern) {
SurfaceImpl &surfi = static_cast<SurfaceImpl &>(surfacePattern);
bool canDraw = surfi.psurf;
if (canDraw) {
// Tile pattern over rectangle
// Currently assumes 8x8 pattern
int widthPat = 8;
int heightPat = 8;
for (int xTile = rc.left; xTile < rc.right; xTile += widthPat) {
int widthx = (xTile + widthPat > rc.right) ? rc.right - xTile : widthPat;
for (int yTile = rc.top; yTile < rc.bottom; yTile += heightPat) {
int heighty = (yTile + heightPat > rc.bottom) ? rc.bottom - yTile : heightPat;
cairo_set_source_surface(context, surfi.psurf, xTile, yTile);
cairo_rectangle(context, xTile, yTile, widthx, heighty);
cairo_fill(context);
}
}
} else {
// Something is wrong so try to show anyway
// Shows up black because colour not allocated
FillRectangle(rc, ColourDesired(0));
}
}
void SurfaceImpl::RoundedRectangle(PRectangle rc, ColourDesired fore, ColourDesired back) {
if (((rc.right - rc.left) > 4) && ((rc.bottom - rc.top) > 4)) {
// Approximate a round rect with some cut off corners
Point pts[] = {
Point(rc.left + 2, rc.top),
Point(rc.right - 2, rc.top),
Point(rc.right, rc.top + 2),
Point(rc.right, rc.bottom - 2),
Point(rc.right - 2, rc.bottom),
Point(rc.left + 2, rc.bottom),
Point(rc.left, rc.bottom - 2),
Point(rc.left, rc.top + 2),
};
Polygon(pts, sizeof(pts) / sizeof(pts[0]), fore, back);
} else {
RectangleDraw(rc, fore, back);
}
}
static void PathRoundRectangle(cairo_t *context, double left, double top, double width, double height, int radius) {
double degrees = M_PI / 180.0;
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 2, 0)
cairo_new_sub_path(context);
#else
// First arc is in the top-right corner and starts from a point on the top line
cairo_move_to(context, left + width - radius, top);
#endif
cairo_arc(context, left + width - radius, top + radius, radius, -90 * degrees, 0 * degrees);
cairo_arc(context, left + width - radius, top + height - radius, radius, 0 * degrees, 90 * degrees);
cairo_arc(context, left + radius, top + height - radius, radius, 90 * degrees, 180 * degrees);
cairo_arc(context, left + radius, top + radius, radius, 180 * degrees, 270 * degrees);
cairo_close_path(context);
}
void SurfaceImpl::AlphaRectangle(PRectangle rc, int cornerSize, ColourDesired fill, int alphaFill,
ColourDesired outline, int alphaOutline, int flags) {
if (context && rc.Width() > 0) {
ColourDesired cdFill(fill.AsLong());
cairo_set_source_rgba(context,
cdFill.GetRed() / 255.0,
cdFill.GetGreen() / 255.0,
cdFill.GetBlue() / 255.0,
alphaFill / 255.0);
if (cornerSize > 0)
PathRoundRectangle(context, rc.left + 1.0, rc.top + 1.0, rc.right - rc.left - 2.0, rc.bottom - rc.top - 2.0, cornerSize);
else
cairo_rectangle(context, rc.left + 1.0, rc.top + 1.0, rc.right - rc.left - 2.0, rc.bottom - rc.top - 2.0);
cairo_fill(context);
ColourDesired cdOutline(outline.AsLong());
cairo_set_source_rgba(context,
cdOutline.GetRed() / 255.0,
cdOutline.GetGreen() / 255.0,
cdOutline.GetBlue() / 255.0,
alphaOutline / 255.0);
if (cornerSize > 0)
PathRoundRectangle(context, rc.left + 0.5, rc.top + 0.5, rc.right - rc.left - 1, rc.bottom - rc.top - 1, cornerSize);
else
cairo_rectangle(context, rc.left + 0.5, rc.top + 0.5, rc.right - rc.left - 1, rc.bottom - rc.top - 1);
cairo_stroke(context);
}
}
void SurfaceImpl::DrawRGBAImage(PRectangle rc, int width, int height, const unsigned char *pixelsImage) {
if (rc.Width() > width)
rc.left += (rc.Width() - width) / 2;
rc.right = rc.left + width;
if (rc.Height() > height)
rc.top += (rc.Height() - height) / 2;
rc.bottom = rc.top + height;
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1,6,0)
int stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width);
#else
int stride = width * 4;
#endif
int ucs = stride * height;
std::vector<unsigned char> image(ucs);
for (int y=0; y<height; y++) {
for (int x=0; x<width; x++) {
unsigned char *pixel = &image[0] + y*stride + x * 4;
unsigned char alpha = pixelsImage[3];
pixel[2] = (*pixelsImage++) * alpha / 255;
pixel[1] = (*pixelsImage++) * alpha / 255;
pixel[0] = (*pixelsImage++) * alpha / 255;
pixel[3] = *pixelsImage++;
}
}
cairo_surface_t *psurf = cairo_image_surface_create_for_data(&image[0], CAIRO_FORMAT_ARGB32, width, height, stride);
cairo_set_source_surface(context, psurf, rc.left, rc.top);
cairo_rectangle(context, rc.left, rc.top, rc.right-rc.left, rc.bottom-rc.top);
cairo_fill(context);
cairo_surface_destroy(psurf);
}
void SurfaceImpl::Ellipse(PRectangle rc, ColourDesired fore, ColourDesired back) {
PenColour(back);
cairo_arc(context, (rc.left + rc.right) / 2 + 0.5, (rc.top + rc.bottom) / 2 + 0.5,
Platform::Minimum(rc.Width(), rc.Height()) / 2, 0, 2*M_PI);
cairo_fill_preserve(context);
PenColour(fore);
cairo_stroke(context);
}
void SurfaceImpl::Copy(PRectangle rc, Point from, Surface &surfaceSource) {
SurfaceImpl &surfi = static_cast<SurfaceImpl &>(surfaceSource);
bool canDraw = surfi.psurf;
if (canDraw) {
cairo_set_source_surface(context, surfi.psurf,
rc.left - from.x, rc.top - from.y);
cairo_rectangle(context, rc.left, rc.top, rc.right-rc.left, rc.bottom-rc.top);
cairo_fill(context);
}
}
std::string UTF8FromLatin1(const char *s, int len) {
std::string utfForm(len*2 + 1, '\0');
size_t lenU = 0;
for (int i=0;i<len;i++) {
unsigned int uch = static_cast<unsigned char>(s[i]);
if (uch < 0x80) {
utfForm[lenU++] = uch;
} else {
utfForm[lenU++] = static_cast<char>(0xC0 | (uch >> 6));
utfForm[lenU++] = static_cast<char>(0x80 | (uch & 0x3f));
}
}
utfForm.resize(lenU);
return utfForm;
}
static std::string UTF8FromIconv(const Converter &conv, const char *s, int len) {
if (conv) {
std::string utfForm(len*3+1, '\0');
char *pin = const_cast<char *>(s);
size_t inLeft = len;
char *putf = &utfForm[0];
char *pout = putf;
size_t outLeft = len*3+1;
size_t conversions = conv.Convert(&pin, &inLeft, &pout, &outLeft);
if (conversions != ((size_t)(-1))) {
*pout = '\0';
utfForm.resize(pout - putf);
return utfForm;
}
}
return std::string();
}
// Work out how many bytes are in a character by trying to convert using iconv,
// returning the first length that succeeds.
static size_t MultiByteLenFromIconv(const Converter &conv, const char *s, size_t len) {
for (size_t lenMB=1; (lenMB<4) && (lenMB <= len); lenMB++) {
char wcForm[2];
char *pin = const_cast<char *>(s);
size_t inLeft = lenMB;
char *pout = wcForm;
size_t outLeft = 2;
size_t conversions = conv.Convert(&pin, &inLeft, &pout, &outLeft);
if (conversions != ((size_t)(-1))) {
return lenMB;
}
}
return 1;
}
static size_t UTF8CharLength(const char *s) {
const unsigned char *us = reinterpret_cast<const unsigned char *>(s);
unsigned char ch = *us;
if (ch < 0x80) {
return 1;
} else if (ch < 0x80 + 0x40 + 0x20) {
return 2;
} else {
return 3;
}
}
void SurfaceImpl::DrawTextBase(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len,
ColourDesired fore) {
PenColour(fore);
if (context) {
XYPOSITION xText = rc.left;
if (PFont(font_)->pfd) {
std::string utfForm;
if (et == UTF8) {
pango_layout_set_text(layout, s, len);
} else {
SetConverter(PFont(font_)->characterSet);
utfForm = UTF8FromIconv(conv, s, len);
if (utfForm.empty()) { // iconv failed so treat as Latin1
utfForm = UTF8FromLatin1(s, len);
}
pango_layout_set_text(layout, utfForm.c_str(), utfForm.length());
}
pango_layout_set_font_description(layout, PFont(font_)->pfd);
pango_cairo_update_layout(context, layout);
#ifdef PANGO_VERSION
PangoLayoutLine *pll = pango_layout_get_line_readonly(layout,0);
#else
PangoLayoutLine *pll = pango_layout_get_line(layout,0);
#endif
cairo_move_to(context, xText, ybase);
pango_cairo_show_layout_line(context, pll);
}
}
}
void SurfaceImpl::DrawTextNoClip(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len,
ColourDesired fore, ColourDesired back) {
FillRectangle(rc, back);
DrawTextBase(rc, font_, ybase, s, len, fore);
}
// On GTK+, exactly same as DrawTextNoClip
void SurfaceImpl::DrawTextClipped(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len,
ColourDesired fore, ColourDesired back) {
FillRectangle(rc, back);
DrawTextBase(rc, font_, ybase, s, len, fore);
}
void SurfaceImpl::DrawTextTransparent(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len,
ColourDesired fore) {
// Avoid drawing spaces in transparent mode
for (int i=0;i<len;i++) {
if (s[i] != ' ') {
DrawTextBase(rc, font_, ybase, s, len, fore);
return;
}
}
}
class ClusterIterator {
PangoLayoutIter *iter;
PangoRectangle pos;
int lenPositions;
public:
bool finished;
XYPOSITION positionStart;
XYPOSITION position;
XYPOSITION distance;
int curIndex;
ClusterIterator(PangoLayout *layout, int len) : lenPositions(len), finished(false),
positionStart(0), position(0), distance(0), curIndex(0) {
iter = pango_layout_get_iter(layout);
pango_layout_iter_get_cluster_extents(iter, NULL, &pos);
}
~ClusterIterator() {
pango_layout_iter_free(iter);
}
void Next() {
positionStart = position;
if (pango_layout_iter_next_cluster(iter)) {
pango_layout_iter_get_cluster_extents(iter, NULL, &pos);
position = doubleFromPangoUnits(pos.x);
curIndex = pango_layout_iter_get_index(iter);
} else {
finished = true;
position = doubleFromPangoUnits(pos.x + pos.width);
curIndex = lenPositions;
}
distance = position - positionStart;
}
};
void SurfaceImpl::MeasureWidths(Font &font_, const char *s, int len, XYPOSITION *positions) {
if (font_.GetID()) {
const int lenPositions = len;
if (PFont(font_)->pfd) {
if (len == 1) {
int width = PFont(font_)->CharWidth(*s, et);
if (width) {
positions[0] = width;
return;
}
}
pango_layout_set_font_description(layout, PFont(font_)->pfd);
if (et == UTF8) {
// Simple and direct as UTF-8 is native Pango encoding
int i = 0;
pango_layout_set_text(layout, s, len);
ClusterIterator iti(layout, lenPositions);
while (!iti.finished) {
iti.Next();
int places = iti.curIndex - i;
while (i < iti.curIndex) {
// Evenly distribute space among bytes of this cluster.
// Would be better to find number of characters and then
// divide evenly between characters with each byte of a character
// being at the same position.
positions[i] = iti.position - (iti.curIndex - 1 - i) * iti.distance / places;
i++;
}
}
PLATFORM_ASSERT(i == lenPositions);
} else {
int positionsCalculated = 0;
if (et == dbcs) {
SetConverter(PFont(font_)->characterSet);
std::string utfForm = UTF8FromIconv(conv, s, len);
if (!utfForm.empty()) {
// Convert to UTF-8 so can ask Pango for widths, then
// Loop through UTF-8 and DBCS forms, taking account of different
// character byte lengths.
Converter convMeasure("UCS-2", CharacterSetID(characterSet), false);
pango_layout_set_text(layout, utfForm.c_str(), strlen(utfForm.c_str()));
int i = 0;
int clusterStart = 0;
ClusterIterator iti(layout, strlen(utfForm.c_str()));
while (!iti.finished) {
iti.Next();
int clusterEnd = iti.curIndex;
int places = g_utf8_strlen(utfForm.c_str() + clusterStart, clusterEnd - clusterStart);
int place = 1;
while (clusterStart < clusterEnd) {
size_t lenChar = MultiByteLenFromIconv(convMeasure, s+i, len-i);
while (lenChar--) {
positions[i++] = iti.position - (places - place) * iti.distance / places;
positionsCalculated++;
}
clusterStart += UTF8CharLength(utfForm.c_str()+clusterStart);
place++;
}
}
PLATFORM_ASSERT(i == lenPositions);
}
}
if (positionsCalculated < 1 ) {
// Either Latin1 or DBCS conversion failed so treat as Latin1.
SetConverter(PFont(font_)->characterSet);
std::string utfForm = UTF8FromIconv(conv, s, len);
if (utfForm.empty()) {
utfForm = UTF8FromLatin1(s, len);
}
pango_layout_set_text(layout, utfForm.c_str(), utfForm.length());
int i = 0;
int clusterStart = 0;
// Each Latin1 input character may take 1 or 2 bytes in UTF-8
// and groups of up to 3 may be represented as ligatures.
ClusterIterator iti(layout, utfForm.length());
while (!iti.finished) {
iti.Next();
int clusterEnd = iti.curIndex;
int ligatureLength = g_utf8_strlen(utfForm.c_str() + clusterStart, clusterEnd - clusterStart);
PLATFORM_ASSERT(ligatureLength > 0 && ligatureLength <= 3);
for (int charInLig=0; charInLig<ligatureLength; charInLig++) {
positions[i++] = iti.position - (ligatureLength - 1 - charInLig) * iti.distance / ligatureLength;
}
clusterStart = clusterEnd;
}
PLATFORM_ASSERT(i == lenPositions);
}
}
if (len == 1) {
PFont(font_)->SetCharWidth(*s, positions[0], et);
}
return;
}
} else {
// No font so return an ascending range of values
for (int i = 0; i < len; i++) {
positions[i] = i + 1;
}
}
}
XYPOSITION SurfaceImpl::WidthText(Font &font_, const char *s, int len) {
if (font_.GetID()) {
if (PFont(font_)->pfd) {
std::string utfForm;
pango_layout_set_font_description(layout, PFont(font_)->pfd);
PangoRectangle pos;
if (et == UTF8) {
pango_layout_set_text(layout, s, len);
} else {
SetConverter(PFont(font_)->characterSet);
utfForm = UTF8FromIconv(conv, s, len);
if (utfForm.empty()) { // iconv failed so treat as Latin1
utfForm = UTF8FromLatin1(s, len);
}
pango_layout_set_text(layout, utfForm.c_str(), utfForm.length());
}
#ifdef PANGO_VERSION
PangoLayoutLine *pangoLine = pango_layout_get_line_readonly(layout,0);
#else
PangoLayoutLine *pangoLine = pango_layout_get_line(layout,0);
#endif
pango_layout_line_get_extents(pangoLine, NULL, &pos);
return doubleFromPangoUnits(pos.width);
}
return 1;
} else {
return 1;
}
}
XYPOSITION SurfaceImpl::WidthChar(Font &font_, char ch) {
if (font_.GetID()) {
if (PFont(font_)->pfd) {
return WidthText(font_, &ch, 1);
}
return 1;
} else {
return 1;
}
}
// Ascent and descent determined by Pango font metrics.
XYPOSITION SurfaceImpl::Ascent(Font &font_) {
if (!(font_.GetID()))
return 1;
FontMutexLock();
int ascent = PFont(font_)->ascent;
if ((ascent == 0) && (PFont(font_)->pfd)) {
PangoFontMetrics *metrics = pango_context_get_metrics(pcontext,
PFont(font_)->pfd, pango_context_get_language(pcontext));
PFont(font_)->ascent =
doubleFromPangoUnits(pango_font_metrics_get_ascent(metrics));
pango_font_metrics_unref(metrics);
ascent = PFont(font_)->ascent;
}
if (ascent == 0) {
ascent = 1;
}
FontMutexUnlock();
return ascent;
}
XYPOSITION SurfaceImpl::Descent(Font &font_) {
if (!(font_.GetID()))
return 1;
if (PFont(font_)->pfd) {
PangoFontMetrics *metrics = pango_context_get_metrics(pcontext,
PFont(font_)->pfd, pango_context_get_language(pcontext));
int descent = doubleFromPangoUnits(pango_font_metrics_get_descent(metrics));
pango_font_metrics_unref(metrics);
return descent;
}
return 0;
}
XYPOSITION SurfaceImpl::InternalLeading(Font &) {
return 0;
}
XYPOSITION SurfaceImpl::ExternalLeading(Font &) {
return 0;
}
XYPOSITION SurfaceImpl::Height(Font &font_) {
return Ascent(font_) + Descent(font_);
}
XYPOSITION SurfaceImpl::AverageCharWidth(Font &font_) {
return WidthChar(font_, 'n');
}
void SurfaceImpl::SetClip(PRectangle rc) {
cairo_rectangle(context, rc.left, rc.top, rc.right, rc.bottom);
cairo_clip(context);
}
void SurfaceImpl::FlushCachedState() {}
void SurfaceImpl::SetUnicodeMode(bool unicodeMode_) {
if (unicodeMode_)
et = UTF8;
}
void SurfaceImpl::SetDBCSMode(int codePage) {
if (codePage && (codePage != SC_CP_UTF8))
et = dbcs;
}
Surface *Surface::Allocate(int) {
return new SurfaceImpl();
}
Window::~Window() {}
void Window::Destroy() {
if (wid)
gtk_widget_destroy(GTK_WIDGET(wid));
wid = 0;
}
bool Window::HasFocus() {
return IS_WIDGET_FOCUSSED(wid);
}
PRectangle Window::GetPosition() {
// Before any size allocated pretend its 1000 wide so not scrolled
PRectangle rc(0, 0, 1000, 1000);
if (wid) {
GtkAllocation allocation;
#if GTK_CHECK_VERSION(3,0,0)
gtk_widget_get_allocation(PWidget(wid), &allocation);
#else
allocation = PWidget(wid)->allocation;
#endif
rc.left = allocation.x;
rc.top = allocation.y;
if (allocation.width > 20) {
rc.right = rc.left + allocation.width;
rc.bottom = rc.top + allocation.height;
}
}
return rc;
}
void Window::SetPosition(PRectangle rc) {
GtkAllocation alloc;
alloc.x = rc.left;
alloc.y = rc.top;
alloc.width = rc.Width();
alloc.height = rc.Height();
gtk_widget_size_allocate(PWidget(wid), &alloc);
}
void Window::SetPositionRelative(PRectangle rc, Window relativeTo) {
int ox = 0;
int oy = 0;
gdk_window_get_origin(WindowFromWidget(PWidget(relativeTo.wid)), &ox, &oy);
ox += rc.left;
if (ox < 0)
ox = 0;
oy += rc.top;
if (oy < 0)
oy = 0;
/* do some corrections to fit into screen */
int sizex = rc.right - rc.left;
int sizey = rc.bottom - rc.top;
int screenWidth = gdk_screen_width();
int screenHeight = gdk_screen_height();
if (sizex > screenWidth)
ox = 0; /* the best we can do */
else if (ox + sizex > screenWidth)
ox = screenWidth - sizex;
if (oy + sizey > screenHeight)
oy = screenHeight - sizey;
gtk_window_move(GTK_WINDOW(PWidget(wid)), ox, oy);
gtk_widget_set_size_request(PWidget(wid), sizex, sizey);
}
PRectangle Window::GetClientPosition() {
// On GTK+, the client position is the window position
return GetPosition();
}
void Window::Show(bool show) {
if (show)
gtk_widget_show(PWidget(wid));
}
void Window::InvalidateAll() {
if (wid) {
gtk_widget_queue_draw(PWidget(wid));
}
}
void Window::InvalidateRectangle(PRectangle rc) {
if (wid) {
gtk_widget_queue_draw_area(PWidget(wid),
rc.left, rc.top,
rc.right - rc.left, rc.bottom - rc.top);
}
}
void Window::SetFont(Font &) {
// Can not be done generically but only needed for ListBox
}
void Window::SetCursor(Cursor curs) {
// We don't set the cursor to same value numerous times under gtk because
// it stores the cursor in the window once it's set
if (curs == cursorLast)
return;
cursorLast = curs;
GdkCursor *gdkCurs;
switch (curs) {
case cursorText:
gdkCurs = gdk_cursor_new(GDK_XTERM);
break;
case cursorArrow:
gdkCurs = gdk_cursor_new(GDK_LEFT_PTR);
break;
case cursorUp:
gdkCurs = gdk_cursor_new(GDK_CENTER_PTR);
break;
case cursorWait:
gdkCurs = gdk_cursor_new(GDK_WATCH);
break;
case cursorHand:
gdkCurs = gdk_cursor_new(GDK_HAND2);
break;
case cursorReverseArrow:
gdkCurs = gdk_cursor_new(GDK_RIGHT_PTR);
break;
default:
gdkCurs = gdk_cursor_new(GDK_LEFT_PTR);
cursorLast = cursorArrow;
break;
}
if (WindowFromWidget(PWidget(wid)))
gdk_window_set_cursor(WindowFromWidget(PWidget(wid)), gdkCurs);
#if GTK_CHECK_VERSION(3,0,0)
g_object_unref(gdkCurs);
#else
gdk_cursor_unref(gdkCurs);
#endif
}
void Window::SetTitle(const char *s) {
gtk_window_set_title(GTK_WINDOW(wid), s);
}
/* Returns rectangle of monitor pt is on, both rect and pt are in Window's
gdk window coordinates */
PRectangle Window::GetMonitorRect(Point pt) {
gint x_offset, y_offset;
gdk_window_get_origin(WindowFromWidget(PWidget(wid)), &x_offset, &y_offset);
GdkScreen* screen;
gint monitor_num;
GdkRectangle rect;
screen = gtk_widget_get_screen(PWidget(wid));
monitor_num = gdk_screen_get_monitor_at_point(screen, pt.x + x_offset, pt.y + y_offset);
gdk_screen_get_monitor_geometry(screen, monitor_num, &rect);
rect.x -= x_offset;
rect.y -= y_offset;
return PRectangle(rect.x, rect.y, rect.x + rect.width, rect.y + rect.height);
}
typedef std::map<int, RGBAImage*> ImageMap;
struct ListImage {
const RGBAImage *rgba_data;
GdkPixbuf *pixbuf;
};
static void list_image_free(gpointer, gpointer value, gpointer) {
ListImage *list_image = static_cast<ListImage *>(value);
if (list_image->pixbuf)
g_object_unref(list_image->pixbuf);
g_free(list_image);
}
ListBox::ListBox() {
}
ListBox::~ListBox() {
}
enum {
PIXBUF_COLUMN,
TEXT_COLUMN,
N_COLUMNS
};
class ListBoxX : public ListBox {
WindowID list;
WindowID scroller;
void *pixhash;
GtkCellRenderer* pixbuf_renderer;
RGBAImageSet images;
int desiredVisibleRows;
unsigned int maxItemCharacters;
unsigned int aveCharWidth;
public:
CallBackAction doubleClickAction;
void *doubleClickActionData;
ListBoxX() : list(0), scroller(0), pixhash(NULL), pixbuf_renderer(0),
desiredVisibleRows(5), maxItemCharacters(0),
aveCharWidth(1), doubleClickAction(NULL), doubleClickActionData(NULL) {
}
virtual ~ListBoxX() {
if (pixhash) {
g_hash_table_foreach((GHashTable *) pixhash, list_image_free, NULL);
g_hash_table_destroy((GHashTable *) pixhash);
}
}
virtual void SetFont(Font &font);
virtual void Create(Window &parent, int ctrlID, Point location_, int lineHeight_, bool unicodeMode_, int technology_);
virtual void SetAverageCharWidth(int width);
virtual void SetVisibleRows(int rows);
virtual int GetVisibleRows() const;
virtual PRectangle GetDesiredRect();
virtual int CaretFromEdge();
virtual void Clear();
virtual void Append(char *s, int type = -1);
virtual int Length();
virtual void Select(int n);
virtual int GetSelection();
virtual int Find(const char *prefix);
virtual void GetValue(int n, char *value, int len);
void RegisterRGBA(int type, RGBAImage *image);
virtual void RegisterImage(int type, const char *xpm_data);
virtual void RegisterRGBAImage(int type, int width, int height, const unsigned char *pixelsImage);
virtual void ClearRegisteredImages();
virtual void SetDoubleClickAction(CallBackAction action, void *data) {
doubleClickAction = action;
doubleClickActionData = data;
}
virtual void SetList(const char *listText, char separator, char typesep);
};
ListBox *ListBox::Allocate() {
ListBoxX *lb = new ListBoxX();
return lb;
}
static gboolean ButtonPress(GtkWidget *, GdkEventButton* ev, gpointer p) {
try {
ListBoxX* lb = reinterpret_cast<ListBoxX*>(p);
if (ev->type == GDK_2BUTTON_PRESS && lb->doubleClickAction != NULL) {
lb->doubleClickAction(lb->doubleClickActionData);
return TRUE;
}
} catch (...) {
// No pointer back to Scintilla to save status
}
return FALSE;
}
/* Change the active color to the selected color so the listbox uses the color
scheme that it would use if it had the focus. */
static void StyleSet(GtkWidget *w, GtkStyle*, void*) {
g_return_if_fail(w != NULL);
/* Copy the selected color to active. Note that the modify calls will cause
recursive calls to this function after the value is updated and w->style to
be set to a new object */
#if GTK_CHECK_VERSION(3,0,0)
GtkStyleContext *styleContext = gtk_widget_get_style_context(w);
if (styleContext == NULL)
return;
GdkRGBA colourForeSelected;
gtk_style_context_get_color(styleContext, GTK_STATE_FLAG_SELECTED, &colourForeSelected);
GdkRGBA colourForeActive;
gtk_style_context_get_color(styleContext, GTK_STATE_FLAG_ACTIVE, &colourForeActive);
if (!gdk_rgba_equal(&colourForeSelected, &colourForeActive))
gtk_widget_override_color(w, GTK_STATE_FLAG_ACTIVE, &colourForeSelected);
styleContext = gtk_widget_get_style_context(w);
if (styleContext == NULL)
return;
GdkRGBA colourBaseSelected;
gtk_style_context_get_background_color(styleContext, GTK_STATE_FLAG_SELECTED, &colourBaseSelected);
GdkRGBA colourBaseActive;
gtk_style_context_get_background_color(styleContext, GTK_STATE_FLAG_ACTIVE, &colourBaseActive);
if (!gdk_rgba_equal(&colourBaseSelected, &colourBaseActive))
gtk_widget_override_background_color(w, GTK_STATE_FLAG_ACTIVE, &colourBaseSelected);
#else
GtkStyle *style = gtk_widget_get_style(w);
if (style == NULL)
return;
if (!gdk_color_equal(&style->base[GTK_STATE_SELECTED], &style->base[GTK_STATE_ACTIVE]))
gtk_widget_modify_base(w, GTK_STATE_ACTIVE, &style->base[GTK_STATE_SELECTED]);
style = gtk_widget_get_style(w);
if (style == NULL)
return;
if (!gdk_color_equal(&style->text[GTK_STATE_SELECTED], &style->text[GTK_STATE_ACTIVE]))
gtk_widget_modify_text(w, GTK_STATE_ACTIVE, &style->text[GTK_STATE_SELECTED]);
#endif
}
void ListBoxX::Create(Window &, int, Point, int, bool, int) {
wid = gtk_window_new(GTK_WINDOW_POPUP);
GtkWidget *frame = gtk_frame_new(NULL);
gtk_widget_show(frame);
gtk_container_add(GTK_CONTAINER(GetID()), frame);
gtk_frame_set_shadow_type(GTK_FRAME(frame), GTK_SHADOW_OUT);
gtk_container_set_border_width(GTK_CONTAINER(frame), 0);
scroller = gtk_scrolled_window_new(NULL, NULL);
gtk_container_set_border_width(GTK_CONTAINER(scroller), 0);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroller),
GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
gtk_container_add(GTK_CONTAINER(frame), PWidget(scroller));
gtk_widget_show(PWidget(scroller));
/* Tree and its model */
GtkListStore *store =
gtk_list_store_new(N_COLUMNS, GDK_TYPE_PIXBUF, G_TYPE_STRING);
list = gtk_tree_view_new_with_model(GTK_TREE_MODEL(store));
g_signal_connect(G_OBJECT(list), "style-set", G_CALLBACK(StyleSet), NULL);
GtkTreeSelection *selection =
gtk_tree_view_get_selection(GTK_TREE_VIEW(list));
gtk_tree_selection_set_mode(selection, GTK_SELECTION_SINGLE);
gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(list), FALSE);
gtk_tree_view_set_reorderable(GTK_TREE_VIEW(list), FALSE);
/* Columns */
GtkTreeViewColumn *column = gtk_tree_view_column_new();
gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_FIXED);
gtk_tree_view_column_set_title(column, "Autocomplete");
pixbuf_renderer = gtk_cell_renderer_pixbuf_new();
gtk_cell_renderer_set_fixed_size(pixbuf_renderer, 0, -1);
gtk_tree_view_column_pack_start(column, pixbuf_renderer, FALSE);
gtk_tree_view_column_add_attribute(column, pixbuf_renderer,
"pixbuf", PIXBUF_COLUMN);
GtkCellRenderer* renderer = gtk_cell_renderer_text_new();
gtk_cell_renderer_text_set_fixed_height_from_font(GTK_CELL_RENDERER_TEXT(renderer), 1);
gtk_tree_view_column_pack_start(column, renderer, TRUE);
gtk_tree_view_column_add_attribute(column, renderer,
"text", TEXT_COLUMN);
gtk_tree_view_append_column(GTK_TREE_VIEW(list), column);
if (g_object_class_find_property(G_OBJECT_GET_CLASS(list), "fixed-height-mode"))
g_object_set(G_OBJECT(list), "fixed-height-mode", TRUE, NULL);
GtkWidget *wid = PWidget(list); // No code inside the G_OBJECT macro
gtk_container_add(GTK_CONTAINER(PWidget(scroller)), wid);
gtk_widget_show(wid);
g_signal_connect(G_OBJECT(wid), "button_press_event",
G_CALLBACK(ButtonPress), this);
gtk_widget_realize(PWidget(wid));
}
void ListBoxX::SetFont(Font &scint_font) {
// Only do for Pango font as there have been crashes for GDK fonts
if (Created() && PFont(scint_font)->pfd) {
// Current font is Pango font
#if GTK_CHECK_VERSION(3,0,0)
gtk_widget_override_font(PWidget(list), PFont(scint_font)->pfd);
#else
gtk_widget_modify_font(PWidget(list), PFont(scint_font)->pfd);
#endif
}
}
void ListBoxX::SetAverageCharWidth(int width) {
aveCharWidth = width;
}
void ListBoxX::SetVisibleRows(int rows) {
desiredVisibleRows = rows;
}
int ListBoxX::GetVisibleRows() const {
return desiredVisibleRows;
}
PRectangle ListBoxX::GetDesiredRect() {
// Before any size allocated pretend its 100 wide so not scrolled
PRectangle rc(0, 0, 100, 100);
if (wid) {
int rows = Length();
if ((rows == 0) || (rows > desiredVisibleRows))
rows = desiredVisibleRows;
GtkRequisition req;
#if GTK_CHECK_VERSION(3,0,0)
// This, apparently unnecessary call, ensures gtk_tree_view_column_cell_get_size
// returns reasonable values.
gtk_widget_get_preferred_size(GTK_WIDGET(scroller), NULL, &req);
#endif
int height;
// First calculate height of the clist for our desired visible
// row count otherwise it tries to expand to the total # of rows
// Get cell height
int row_width=0;
int row_height=0;
GtkTreeViewColumn * column =
gtk_tree_view_get_column(GTK_TREE_VIEW(list), 0);
gtk_tree_view_column_cell_get_size(column, NULL,
NULL, NULL, &row_width, &row_height);
#if GTK_CHECK_VERSION(3,0,0)
GtkStyleContext *styleContextList = gtk_widget_get_style_context(PWidget(list));
GtkBorder padding;
gtk_style_context_get_padding(styleContextList, GTK_STATE_FLAG_NORMAL, &padding);
height = (rows * row_height
+ padding.top + padding.bottom
+ 2 * (gtk_container_get_border_width(GTK_CONTAINER(PWidget(list))) + 1));
#else
int ythickness = PWidget(list)->style->ythickness;
height = (rows * row_height
+ 2 * (ythickness
+ GTK_CONTAINER(PWidget(list))->border_width + 1));
#endif
gtk_widget_set_size_request(GTK_WIDGET(PWidget(list)), -1, height);
// Get the size of the scroller because we set usize on the window
#if GTK_CHECK_VERSION(3,0,0)
gtk_widget_get_preferred_size(GTK_WIDGET(scroller), NULL, &req);
#else
gtk_widget_size_request(GTK_WIDGET(scroller), &req);
#endif
rc.right = req.width;
rc.bottom = Platform::Maximum(height, req.height);
gtk_widget_set_size_request(GTK_WIDGET(list), -1, -1);
int width = maxItemCharacters;
if (width < 12)
width = 12;
rc.right = width * (aveCharWidth + aveCharWidth / 3);
if (Length() > rows)
rc.right = rc.right + 16;
}
return rc;
}
int ListBoxX::CaretFromEdge() {
gint renderer_width, renderer_height;
gtk_cell_renderer_get_fixed_size(pixbuf_renderer, &renderer_width,
&renderer_height);
return 4 + renderer_width;
}
void ListBoxX::Clear() {
GtkTreeModel *model = gtk_tree_view_get_model(GTK_TREE_VIEW(list));
gtk_list_store_clear(GTK_LIST_STORE(model));
maxItemCharacters = 0;
}
static void init_pixmap(ListImage *list_image) {
if (list_image->rgba_data) {
// Drop any existing pixmap/bitmap as data may have changed
if (list_image->pixbuf)
g_object_unref(list_image->pixbuf);
list_image->pixbuf =
gdk_pixbuf_new_from_data(list_image->rgba_data->Pixels(),
GDK_COLORSPACE_RGB,
TRUE,
8,
list_image->rgba_data->GetWidth(),
list_image->rgba_data->GetHeight(),
list_image->rgba_data->GetWidth() * 4,
NULL,
NULL);
}
}
#define SPACING 5
void ListBoxX::Append(char *s, int type) {
ListImage *list_image = NULL;
if ((type >= 0) && pixhash) {
list_image = static_cast<ListImage *>(g_hash_table_lookup((GHashTable *) pixhash
, (gconstpointer) GINT_TO_POINTER(type)));
}
GtkTreeIter iter;
GtkListStore *store =
GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW(list)));
gtk_list_store_append(GTK_LIST_STORE(store), &iter);
if (list_image) {
if (NULL == list_image->pixbuf)
init_pixmap(list_image);
if (list_image->pixbuf) {
gtk_list_store_set(GTK_LIST_STORE(store), &iter,
PIXBUF_COLUMN, list_image->pixbuf,
TEXT_COLUMN, s, -1);
gint pixbuf_width = gdk_pixbuf_get_width(list_image->pixbuf);
gint renderer_height, renderer_width;
gtk_cell_renderer_get_fixed_size(pixbuf_renderer,
&renderer_width, &renderer_height);
if (pixbuf_width > renderer_width)
gtk_cell_renderer_set_fixed_size(pixbuf_renderer,
pixbuf_width, -1);
} else {
gtk_list_store_set(GTK_LIST_STORE(store), &iter,
TEXT_COLUMN, s, -1);
}
} else {
gtk_list_store_set(GTK_LIST_STORE(store), &iter,
TEXT_COLUMN, s, -1);
}
size_t len = strlen(s);
if (maxItemCharacters < len)
maxItemCharacters = len;
}
int ListBoxX::Length() {
if (wid)
return gtk_tree_model_iter_n_children(gtk_tree_view_get_model
(GTK_TREE_VIEW(list)), NULL);
return 0;
}
void ListBoxX::Select(int n) {
GtkTreeIter iter;
GtkTreeModel *model = gtk_tree_view_get_model(GTK_TREE_VIEW(list));
GtkTreeSelection *selection =
gtk_tree_view_get_selection(GTK_TREE_VIEW(list));
if (n < 0) {
gtk_tree_selection_unselect_all(selection);
return;
}
bool valid = gtk_tree_model_iter_nth_child(model, &iter, NULL, n) != FALSE;
if (valid) {
gtk_tree_selection_select_iter(selection, &iter);
// Move the scrollbar to show the selection.
int total = Length();
#if GTK_CHECK_VERSION(3,0,0)
GtkAdjustment *adj =
gtk_scrollable_get_vadjustment(GTK_SCROLLABLE(list));
gfloat value = ((gfloat)n / total) * (gtk_adjustment_get_upper(adj) - gtk_adjustment_get_lower(adj))
+ gtk_adjustment_get_lower(adj) - gtk_adjustment_get_page_size(adj) / 2;
#else
GtkAdjustment *adj =
gtk_tree_view_get_vadjustment(GTK_TREE_VIEW(list));
gfloat value = ((gfloat)n / total) * (adj->upper - adj->lower)
+ adj->lower - adj->page_size / 2;
#endif
// Get cell height
int row_width;
int row_height;
GtkTreeViewColumn * column =
gtk_tree_view_get_column(GTK_TREE_VIEW(list), 0);
gtk_tree_view_column_cell_get_size(column, NULL, NULL,
NULL, &row_width, &row_height);
int rows = Length();
if ((rows == 0) || (rows > desiredVisibleRows))
rows = desiredVisibleRows;
if (rows & 0x1) {
// Odd rows to display -- We are now in the middle.
// Align it so that we don't chop off rows.
value += (gfloat)row_height / 2.0;
}
// Clamp it.
value = (value < 0)? 0 : value;
#if GTK_CHECK_VERSION(3,0,0)
value = (value > (gtk_adjustment_get_upper(adj) - gtk_adjustment_get_page_size(adj)))?
(gtk_adjustment_get_upper(adj) - gtk_adjustment_get_page_size(adj)) : value;
#else
value = (value > (adj->upper - adj->page_size))?
(adj->upper - adj->page_size) : value;
#endif
// Set it.
gtk_adjustment_set_value(adj, value);
} else {
gtk_tree_selection_unselect_all(selection);
}
}
int ListBoxX::GetSelection() {
GtkTreeIter iter;
GtkTreeModel *model;
GtkTreeSelection *selection;
selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(list));
if (gtk_tree_selection_get_selected(selection, &model, &iter)) {
GtkTreePath *path = gtk_tree_model_get_path(model, &iter);
int *indices = gtk_tree_path_get_indices(path);
// Don't free indices.
if (indices)
return indices[0];
}
return -1;
}
int ListBoxX::Find(const char *prefix) {
GtkTreeIter iter;
GtkTreeModel *model =
gtk_tree_view_get_model(GTK_TREE_VIEW(list));
bool valid = gtk_tree_model_get_iter_first(model, &iter) != FALSE;
int i = 0;
while(valid) {
gchar *s;
gtk_tree_model_get(model, &iter, TEXT_COLUMN, &s, -1);
if (s && (0 == strncmp(prefix, s, strlen(prefix)))) {
g_free(s);
return i;
}
g_free(s);
valid = gtk_tree_model_iter_next(model, &iter) != FALSE;
i++;
}
return -1;
}
void ListBoxX::GetValue(int n, char *value, int len) {
char *text = NULL;
GtkTreeIter iter;
GtkTreeModel *model = gtk_tree_view_get_model(GTK_TREE_VIEW(list));
bool valid = gtk_tree_model_iter_nth_child(model, &iter, NULL, n) != FALSE;
if (valid) {
gtk_tree_model_get(model, &iter, TEXT_COLUMN, &text, -1);
}
if (text && len > 0) {
strncpy(value, text, len);
value[len - 1] = '\0';
} else {
value[0] = '\0';
}
g_free(text);
}
// g_return_if_fail causes unnecessary compiler warning in release compile.
#ifdef _MSC_VER
#pragma warning(disable: 4127)
#endif
void ListBoxX::RegisterRGBA(int type, RGBAImage *image) {
images.Add(type, image);
if (!pixhash) {
pixhash = g_hash_table_new(g_direct_hash, g_direct_equal);
}
ListImage *list_image = static_cast<ListImage *>(g_hash_table_lookup((GHashTable *) pixhash,
(gconstpointer) GINT_TO_POINTER(type)));
if (list_image) {
// Drop icon already registered
if (list_image->pixbuf)
g_object_unref(list_image->pixbuf);
list_image->pixbuf = NULL;
list_image->rgba_data = image;
} else {
list_image = g_new0(ListImage, 1);
list_image->rgba_data = image;
g_hash_table_insert((GHashTable *) pixhash, GINT_TO_POINTER(type),
(gpointer) list_image);
}
}
void ListBoxX::RegisterImage(int type, const char *xpm_data) {
g_return_if_fail(xpm_data);
XPM xpmImage(xpm_data);
RegisterRGBA(type, new RGBAImage(xpmImage));
}
void ListBoxX::RegisterRGBAImage(int type, int width, int height, const unsigned char *pixelsImage) {
RegisterRGBA(type, new RGBAImage(width, height, 1.0, pixelsImage));
}
void ListBoxX::ClearRegisteredImages() {
images.Clear();
}
void ListBoxX::SetList(const char *listText, char separator, char typesep) {
Clear();
int count = strlen(listText) + 1;
std::vector<char> words(listText, listText+count);
char *startword = &words[0];
char *numword = NULL;
int i = 0;
for (; words[i]; i++) {
if (words[i] == separator) {
words[i] = '\0';
if (numword)
*numword = '\0';
Append(startword, numword?atoi(numword + 1):-1);
startword = &words[0] + i + 1;
numword = NULL;
} else if (words[i] == typesep) {
numword = &words[0] + i;
}
}
if (startword) {
if (numword)
*numword = '\0';
Append(startword, numword?atoi(numword + 1):-1);
}
}
Menu::Menu() : mid(0) {}
void Menu::CreatePopUp() {
Destroy();
mid = gtk_menu_new();
#if GLIB_CHECK_VERSION(2,10,0)
g_object_ref_sink(G_OBJECT(mid));
#else
g_object_ref(G_OBJECT(mid));
gtk_object_sink(GTK_OBJECT(G_OBJECT(mid)));
#endif
}
void Menu::Destroy() {
if (mid)
g_object_unref(G_OBJECT(mid));
mid = 0;
}
static void MenuPositionFunc(GtkMenu *, gint *x, gint *y, gboolean *, gpointer userData) {
sptr_t intFromPointer = reinterpret_cast<sptr_t>(userData);
*x = intFromPointer & 0xffff;
*y = intFromPointer >> 16;
}
void Menu::Show(Point pt, Window &) {
int screenHeight = gdk_screen_height();
int screenWidth = gdk_screen_width();
GtkMenu *widget = reinterpret_cast<GtkMenu *>(mid);
gtk_widget_show_all(GTK_WIDGET(widget));
GtkRequisition requisition;
#if GTK_CHECK_VERSION(3,0,0)
gtk_widget_get_preferred_size(GTK_WIDGET(widget), NULL, &requisition);
#else
gtk_widget_size_request(GTK_WIDGET(widget), &requisition);
#endif
if ((pt.x + requisition.width) > screenWidth) {
pt.x = screenWidth - requisition.width;
}
if ((pt.y + requisition.height) > screenHeight) {
pt.y = screenHeight - requisition.height;
}
gtk_menu_popup(widget, NULL, NULL, MenuPositionFunc,
reinterpret_cast<void *>((static_cast<int>(pt.y) << 16) | static_cast<int>(pt.x)), 0,
gtk_get_current_event_time());
}
ElapsedTime::ElapsedTime() {
GTimeVal curTime;
g_get_current_time(&curTime);
bigBit = curTime.tv_sec;
littleBit = curTime.tv_usec;
}
class DynamicLibraryImpl : public DynamicLibrary {
protected:
GModule* m;
public:
DynamicLibraryImpl(const char *modulePath) {
m = g_module_open(modulePath, G_MODULE_BIND_LAZY);
}
virtual ~DynamicLibraryImpl() {
if (m != NULL)
g_module_close(m);
}
// Use g_module_symbol to get a pointer to the relevant function.
virtual Function FindFunction(const char *name) {
if (m != NULL) {
gpointer fn_address = NULL;
gboolean status = g_module_symbol(m, name, &fn_address);
if (status)
return static_cast<Function>(fn_address);
else
return NULL;
} else
return NULL;
}
virtual bool IsValid() {
return m != NULL;
}
};
DynamicLibrary *DynamicLibrary::Load(const char *modulePath) {
return static_cast<DynamicLibrary *>( new DynamicLibraryImpl(modulePath) );
}
double ElapsedTime::Duration(bool reset) {
GTimeVal curTime;
g_get_current_time(&curTime);
long endBigBit = curTime.tv_sec;
long endLittleBit = curTime.tv_usec;
double result = 1000000.0 * (endBigBit - bigBit);
result += endLittleBit - littleBit;
result /= 1000000.0;
if (reset) {
bigBit = endBigBit;
littleBit = endLittleBit;
}
return result;
}
ColourDesired Platform::Chrome() {
return ColourDesired(0xe0, 0xe0, 0xe0);
}
ColourDesired Platform::ChromeHighlight() {
return ColourDesired(0xff, 0xff, 0xff);
}
const char *Platform::DefaultFont() {
#ifdef G_OS_WIN32
return "Lucida Console";
#else
return "!Sans";
#endif
}
int Platform::DefaultFontSize() {
#ifdef G_OS_WIN32
return 10;
#else
return 12;
#endif
}
unsigned int Platform::DoubleClickTime() {
return 500; // Half a second
}
bool Platform::MouseButtonBounce() {
return true;
}
void Platform::DebugDisplay(const char *s) {
fprintf(stderr, "%s", s);
}
bool Platform::IsKeyDown(int) {
// TODO: discover state of keys in GTK+/X
return false;
}
long Platform::SendScintilla(
WindowID w, unsigned int msg, unsigned long wParam, long lParam) {
return scintilla_send_message(SCINTILLA(w), msg, wParam, lParam);
}
long Platform::SendScintillaPointer(
WindowID w, unsigned int msg, unsigned long wParam, void *lParam) {
return scintilla_send_message(SCINTILLA(w), msg, wParam,
reinterpret_cast<sptr_t>(lParam));
}
bool Platform::IsDBCSLeadByte(int codePage, char ch) {
// Byte ranges found in Wikipedia articles with relevant search strings in each case
unsigned char uch = static_cast<unsigned char>(ch);
switch (codePage) {
case 932:
// Shift_jis
return ((uch >= 0x81) && (uch <= 0x9F)) ||
((uch >= 0xE0) && (uch <= 0xFC));
// Lead bytes F0 to FC may be a Microsoft addition.
case 936:
// GBK
return (uch >= 0x81) && (uch <= 0xFE);
case 950:
// Big5
return (uch >= 0x81) && (uch <= 0xFE);
// Korean EUC-KR may be code page 949.
}
return false;
}
int Platform::DBCSCharLength(int codePage, const char *s) {
if (codePage == 932 || codePage == 936 || codePage == 950) {
return IsDBCSLeadByte(codePage, s[0]) ? 2 : 1;
} else {
int bytes = mblen(s, MB_CUR_MAX);
if (bytes >= 1)
return bytes;
else
return 1;
}
}
int Platform::DBCSCharMaxLength() {
return MB_CUR_MAX;
//return 2;
}
// These are utility functions not really tied to a platform
int Platform::Minimum(int a, int b) {
if (a < b)
return a;
else
return b;
}
int Platform::Maximum(int a, int b) {
if (a > b)
return a;
else
return b;
}
//#define TRACE
#ifdef TRACE
void Platform::DebugPrintf(const char *format, ...) {
char buffer[2000];
va_list pArguments;
va_start(pArguments, format);
vsprintf(buffer, format, pArguments);
va_end(pArguments);
Platform::DebugDisplay(buffer);
}
#else
void Platform::DebugPrintf(const char *, ...) {}
#endif
// Not supported for GTK+
static bool assertionPopUps = true;
bool Platform::ShowAssertionPopUps(bool assertionPopUps_) {
bool ret = assertionPopUps;
assertionPopUps = assertionPopUps_;
return ret;
}
void Platform::Assert(const char *c, const char *file, int line) {
char buffer[2000];
sprintf(buffer, "Assertion [%s] failed at %s %d", c, file, line);
strcat(buffer, "\r\n");
Platform::DebugDisplay(buffer);
abort();
}
int Platform::Clamp(int val, int minVal, int maxVal) {
if (val > maxVal)
val = maxVal;
if (val < minVal)
val = minVal;
return val;
}
void Platform_Initialise() {
FontMutexAllocate();
}
void Platform_Finalise() {
FontCached::ReleaseAll();
FontMutexFree();
}
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