gecko-dev/gfx/thebes/gfxQtPlatform.cpp

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <QPixmap>
#include <qglobal.h>
#if (QT_VERSION < QT_VERSION_CHECK(5,0,0))
# include <QX11Info>
#else
# include <QPlatformNativeInterface>
#endif
#include <QApplication>
#include <QDesktopWidget>
#include <QPaintEngine>
#include "gfxQtPlatform.h"
#include "gfxFontconfigUtils.h"
#include "mozilla/gfx/2D.h"
#include "cairo.h"
#include "gfxImageSurface.h"
#include "gfxQPainterSurface.h"
#include "nsUnicodeProperties.h"
#ifdef MOZ_PANGO
#include "gfxPangoFonts.h"
#include "gfxContext.h"
#include "gfxUserFontSet.h"
#else
#include "gfxFT2Fonts.h"
#endif
#include "nsUnicharUtils.h"
#include <fontconfig/fontconfig.h>
#include "nsMathUtils.h"
#include "nsTArray.h"
#ifdef MOZ_X11
#include "gfxXlibSurface.h"
#endif
#include "qcms.h"
#ifndef MOZ_PANGO
#include <ft2build.h>
#include FT_FREETYPE_H
#endif
#include "mozilla/Preferences.h"
using namespace mozilla;
using namespace mozilla::unicode;
using namespace mozilla::gfx;
#if (QT_VERSION < QT_VERSION_CHECK(5,0,0))
#define DEFAULT_RENDER_MODE RENDER_DIRECT
#else
#define DEFAULT_RENDER_MODE RENDER_BUFFERED
#endif
static QPaintEngine::Type sDefaultQtPaintEngineType = QPaintEngine::Raster;
gfxFontconfigUtils *gfxQtPlatform::sFontconfigUtils = nullptr;
static cairo_user_data_key_t cairo_qt_pixmap_key;
static void do_qt_pixmap_unref (void *data)
{
QPixmap *pmap = (QPixmap*)data;
delete pmap;
}
static gfxImageFormat sOffscreenFormat = gfxASurface::ImageFormatRGB24;
#ifndef MOZ_PANGO
typedef nsDataHashtable<nsStringHashKey, nsRefPtr<FontFamily> > FontTable;
typedef nsDataHashtable<nsCStringHashKey, nsTArray<nsRefPtr<FontEntry> > > PrefFontTable;
static FontTable *gPlatformFonts = NULL;
static FontTable *gPlatformFontAliases = NULL;
static PrefFontTable *gPrefFonts = NULL;
static gfxSparseBitSet *gCodepointsWithNoFonts = NULL;
static FT_Library gPlatformFTLibrary = NULL;
#endif
gfxQtPlatform::gfxQtPlatform()
{
mPrefFonts.Init(50);
if (!sFontconfigUtils)
sFontconfigUtils = gfxFontconfigUtils::GetFontconfigUtils();
#ifdef MOZ_PANGO
g_type_init();
#else
FT_Init_FreeType(&gPlatformFTLibrary);
gPlatformFonts = new FontTable();
gPlatformFonts->Init(100);
gPlatformFontAliases = new FontTable();
gPlatformFontAliases->Init(100);
gPrefFonts = new PrefFontTable();
gPrefFonts->Init(100);
gCodepointsWithNoFonts = new gfxSparseBitSet();
UpdateFontList();
#endif
nsresult rv;
// 0 - default gfxQPainterSurface
// 1 - gfxImageSurface
int32_t ival = Preferences::GetInt("mozilla.widget-qt.render-mode", DEFAULT_RENDER_MODE);
const char *envTypeOverride = getenv("MOZ_QT_RENDER_TYPE");
if (envTypeOverride)
ival = atoi(envTypeOverride);
switch (ival) {
case 0:
mRenderMode = RENDER_QPAINTER;
break;
case 1:
mRenderMode = RENDER_BUFFERED;
break;
case 2:
mRenderMode = RENDER_DIRECT;
break;
default:
mRenderMode = RENDER_QPAINTER;
}
// Qt doesn't provide a public API to detect the graphicssystem type. We hack
// around this by checking what type of graphicssystem a test QPixmap uses.
QPixmap pixmap(1, 1);
if (pixmap.depth() == 16) {
sOffscreenFormat = gfxASurface::ImageFormatRGB16_565;
}
mScreenDepth = pixmap.depth();
#if (QT_VERSION < QT_VERSION_CHECK(4,8,0))
if (pixmap.paintEngine())
sDefaultQtPaintEngineType = pixmap.paintEngine()->type();
#endif
}
gfxQtPlatform::~gfxQtPlatform()
{
gfxFontconfigUtils::Shutdown();
sFontconfigUtils = nullptr;
#ifdef MOZ_PANGO
gfxPangoFontGroup::Shutdown();
#else
delete gPlatformFonts;
gPlatformFonts = NULL;
delete gPlatformFontAliases;
gPlatformFontAliases = NULL;
delete gPrefFonts;
gPrefFonts = NULL;
delete gCodepointsWithNoFonts;
gCodepointsWithNoFonts = NULL;
cairo_debug_reset_static_data();
FT_Done_FreeType(gPlatformFTLibrary);
gPlatformFTLibrary = NULL;
#endif
#if 0
// It would be nice to do this (although it might need to be after
// the cairo shutdown that happens in ~gfxPlatform). It even looks
// idempotent. But it has fatal assertions that fire if stuff is
// leaked, and we hit them.
FcFini();
#endif
}
#ifdef MOZ_X11
Display*
gfxQtPlatform::GetXDisplay(QWidget* aWindow)
{
#if (QT_VERSION < QT_VERSION_CHECK(5,0,0))
#ifdef Q_WS_X11
return aWindow ? aWindow->x11Info().display() : QX11Info::display();
#else
return nullptr;
#endif
#else
return (Display*)(qApp->platformNativeInterface()->
nativeResourceForWindow("display", aWindow ? aWindow->windowHandle() : nullptr));
#endif
}
Screen*
gfxQtPlatform::GetXScreen(QWidget* aWindow)
{
#if (QT_VERSION < QT_VERSION_CHECK(5,0,0))
#ifdef Q_WS_X11
return ScreenOfDisplay(GetXDisplay(aWindow), aWindow ? aWindow->x11Info().screen() : QX11Info().screen());
#else
return nullptr;
#endif
#else
return ScreenOfDisplay(GetXDisplay(aWindow),
(int)qApp->platformNativeInterface()->
nativeResourceForWindow("screen",
aWindow ? aWindow->windowHandle() : nullptr));
#endif
}
#endif
already_AddRefed<gfxASurface>
gfxQtPlatform::CreateOffscreenSurface(const gfxIntSize& size,
gfxASurface::gfxContentType contentType)
{
nsRefPtr<gfxASurface> newSurface = nullptr;
gfxASurface::gfxImageFormat imageFormat = OptimalFormatForContent(contentType);
#ifdef CAIRO_HAS_QT_SURFACE
if (mRenderMode == RENDER_QPAINTER) {
newSurface = new gfxQPainterSurface(size, imageFormat);
return newSurface.forget();
}
#endif
if ((mRenderMode == RENDER_BUFFERED || mRenderMode == RENDER_DIRECT) &&
sDefaultQtPaintEngineType != QPaintEngine::X11) {
newSurface = new gfxImageSurface(size, imageFormat);
return newSurface.forget();
}
#ifdef MOZ_X11
XRenderPictFormat* xrenderFormat =
gfxXlibSurface::FindRenderFormat(GetXDisplay(), imageFormat);
Screen* screen = GetXScreen();
newSurface = gfxXlibSurface::Create(screen, xrenderFormat, size);
#endif
if (newSurface) {
gfxContext ctx(newSurface);
ctx.SetOperator(gfxContext::OPERATOR_CLEAR);
ctx.Paint();
}
return newSurface.forget();
}
nsresult
gfxQtPlatform::GetFontList(nsIAtom *aLangGroup,
const nsACString& aGenericFamily,
nsTArray<nsString>& aListOfFonts)
{
return sFontconfigUtils->GetFontList(aLangGroup, aGenericFamily,
aListOfFonts);
}
nsresult
gfxQtPlatform::UpdateFontList()
{
#ifndef MOZ_PANGO
FcPattern *pat = NULL;
FcObjectSet *os = NULL;
FcFontSet *fs = NULL;
pat = FcPatternCreate();
os = FcObjectSetBuild(FC_FAMILY, FC_FILE, FC_INDEX, FC_WEIGHT, FC_SLANT, FC_WIDTH, NULL);
fs = FcFontList(NULL, pat, os);
for (int i = 0; i < fs->nfont; i++) {
char *str;
if (FcPatternGetString(fs->fonts[i], FC_FAMILY, 0, (FcChar8 **) &str) != FcResultMatch)
continue;
nsAutoString name(NS_ConvertUTF8toUTF16(nsDependentCString(str)).get());
nsAutoString key(name);
ToLowerCase(key);
nsRefPtr<FontFamily> ff;
if (!gPlatformFonts->Get(key, &ff)) {
ff = new FontFamily(name);
gPlatformFonts->Put(key, ff);
}
FontEntry *fe = new FontEntry(ff->Name());
ff->AddFontEntry(fe);
if (FcPatternGetString(fs->fonts[i], FC_FILE, 0, (FcChar8 **) &str) == FcResultMatch) {
fe->mFilename = nsDependentCString(str);
}
int x;
if (FcPatternGetInteger(fs->fonts[i], FC_INDEX, 0, &x) == FcResultMatch) {
fe->mFTFontIndex = x;
} else {
fe->mFTFontIndex = 0;
}
if (FcPatternGetInteger(fs->fonts[i], FC_WEIGHT, 0, &x) == FcResultMatch) {
switch(x) {
case 0:
fe->mWeight = 100;
break;
case 40:
fe->mWeight = 200;
break;
case 50:
fe->mWeight = 300;
break;
case 75:
case 80:
fe->mWeight = 400;
break;
case 100:
fe->mWeight = 500;
break;
case 180:
fe->mWeight = 600;
break;
case 200:
fe->mWeight = 700;
break;
case 205:
fe->mWeight = 800;
break;
case 210:
fe->mWeight = 900;
break;
default:
// rough estimate
fe->mWeight = (((x * 4) + 100) / 100) * 100;
break;
}
}
fe->mItalic = false;
if (FcPatternGetInteger(fs->fonts[i], FC_SLANT, 0, &x) == FcResultMatch) {
switch (x) {
case FC_SLANT_ITALIC:
case FC_SLANT_OBLIQUE:
fe->mItalic = true;
}
}
// XXX deal with font-stretch (FC_WIDTH) stuff later
}
if (pat)
FcPatternDestroy(pat);
if (os)
FcObjectSetDestroy(os);
if (fs)
FcFontSetDestroy(fs);
#endif
return sFontconfigUtils->UpdateFontList();
}
nsresult
gfxQtPlatform::ResolveFontName(const nsAString& aFontName,
FontResolverCallback aCallback,
void *aClosure,
bool& aAborted)
{
#ifdef MOZ_PANGO
return sFontconfigUtils->ResolveFontName(aFontName, aCallback,
aClosure, aAborted);
#else
nsAutoString name(aFontName);
ToLowerCase(name);
nsRefPtr<FontFamily> ff;
if (gPlatformFonts->Get(name, &ff) ||
gPlatformFontAliases->Get(name, &ff)) {
aAborted = !(*aCallback)(ff->Name(), aClosure);
return NS_OK;
}
nsAutoCString utf8Name = NS_ConvertUTF16toUTF8(aFontName);
FcPattern *npat = FcPatternCreate();
FcPatternAddString(npat, FC_FAMILY, (FcChar8*)utf8Name.get());
FcObjectSet *nos = FcObjectSetBuild(FC_FAMILY, NULL);
FcFontSet *nfs = FcFontList(NULL, npat, nos);
for (int k = 0; k < nfs->nfont; k++) {
FcChar8 *str;
if (FcPatternGetString(nfs->fonts[k], FC_FAMILY, 0, (FcChar8 **) &str) != FcResultMatch)
continue;
nsAutoString altName = NS_ConvertUTF8toUTF16(nsDependentCString(reinterpret_cast<char*>(str)));
ToLowerCase(altName);
if (gPlatformFonts->Get(altName, &ff)) {
gPlatformFontAliases->Put(name, ff);
aAborted = !(*aCallback)(NS_ConvertUTF8toUTF16(nsDependentCString(reinterpret_cast<char*>(str))), aClosure);
goto DONE;
}
}
FcPatternDestroy(npat);
FcObjectSetDestroy(nos);
FcFontSetDestroy(nfs);
{
npat = FcPatternCreate();
FcPatternAddString(npat, FC_FAMILY, (FcChar8*)utf8Name.get());
FcPatternDel(npat, FC_LANG);
FcConfigSubstitute(NULL, npat, FcMatchPattern);
FcDefaultSubstitute(npat);
nos = FcObjectSetBuild(FC_FAMILY, NULL);
nfs = FcFontList(NULL, npat, nos);
FcResult fresult;
FcPattern *match = FcFontMatch(NULL, npat, &fresult);
if (match)
FcFontSetAdd(nfs, match);
for (int k = 0; k < nfs->nfont; k++) {
FcChar8 *str;
if (FcPatternGetString(nfs->fonts[k], FC_FAMILY, 0, (FcChar8 **) &str) != FcResultMatch)
continue;
nsAutoString altName = NS_ConvertUTF8toUTF16(nsDependentCString(reinterpret_cast<char*>(str)));
ToLowerCase(altName);
if (gPlatformFonts->Get(altName, &ff)) {
gPlatformFontAliases->Put(name, ff);
aAborted = !(*aCallback)(NS_ConvertUTF8toUTF16(nsDependentCString(reinterpret_cast<char*>(str))), aClosure);
goto DONE;
}
}
}
DONE:
FcPatternDestroy(npat);
FcObjectSetDestroy(nos);
FcFontSetDestroy(nfs);
return NS_OK;
#endif
}
nsresult
gfxQtPlatform::GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName)
{
return sFontconfigUtils->GetStandardFamilyName(aFontName, aFamilyName);
}
gfxFontGroup *
gfxQtPlatform::CreateFontGroup(const nsAString &aFamilies,
const gfxFontStyle *aStyle,
gfxUserFontSet* aUserFontSet)
{
#ifdef MOZ_PANGO
return new gfxPangoFontGroup(aFamilies, aStyle, aUserFontSet);
#else
return new gfxFT2FontGroup(aFamilies, aStyle, aUserFontSet);
#endif
}
#ifdef MOZ_PANGO
gfxFontEntry*
gfxQtPlatform::LookupLocalFont(const gfxProxyFontEntry *aProxyEntry,
const nsAString& aFontName)
{
return gfxPangoFontGroup::NewFontEntry(*aProxyEntry, aFontName);
}
gfxFontEntry*
gfxQtPlatform::MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
const uint8_t *aFontData, uint32_t aLength)
{
// passing ownership of the font data to the new font entry
return gfxPangoFontGroup::NewFontEntry(*aProxyEntry,
aFontData, aLength);
}
bool
gfxQtPlatform::IsFontFormatSupported(nsIURI *aFontURI, uint32_t aFormatFlags)
{
// check for strange format flags
NS_ASSERTION(!(aFormatFlags & gfxUserFontSet::FLAG_FORMAT_NOT_USED),
"strange font format hint set");
// accept supported formats
// Pango doesn't apply features from AAT TrueType extensions.
// Assume that if this is the only SFNT format specified,
// then AAT extensions are required for complex script support.
if (aFormatFlags & (gfxUserFontSet::FLAG_FORMAT_WOFF |
gfxUserFontSet::FLAG_FORMAT_OPENTYPE |
gfxUserFontSet::FLAG_FORMAT_TRUETYPE)) {
return true;
}
// reject all other formats, known and unknown
if (aFormatFlags != 0) {
return false;
}
// no format hint set, need to look at data
return true;
}
#endif
qcms_profile*
gfxQtPlatform::GetPlatformCMSOutputProfile()
{
return nullptr;
}
#ifndef MOZ_PANGO
FT_Library
gfxQtPlatform::GetFTLibrary()
{
return gPlatformFTLibrary;
}
FontFamily *
gfxQtPlatform::FindFontFamily(const nsAString& aName)
{
nsAutoString name(aName);
ToLowerCase(name);
nsRefPtr<FontFamily> ff;
if (!gPlatformFonts->Get(name, &ff)) {
return nullptr;
}
return ff.get();
}
FontEntry *
gfxQtPlatform::FindFontEntry(const nsAString& aName, const gfxFontStyle& aFontStyle)
{
nsRefPtr<FontFamily> ff = FindFontFamily(aName);
if (!ff)
return nullptr;
return ff->FindFontEntry(aFontStyle);
}
static PLDHashOperator
FindFontForCharProc(nsStringHashKey::KeyType aKey,
nsRefPtr<FontFamily>& aFontFamily,
void* aUserArg)
{
GlobalFontMatch *data = (GlobalFontMatch*)aUserArg;
aFontFamily->FindFontForChar(data);
return PL_DHASH_NEXT;
}
already_AddRefed<gfxFont>
gfxQtPlatform::FindFontForChar(uint32_t aCh, gfxFont *aFont)
{
if (!gPlatformFonts || !gCodepointsWithNoFonts)
return nullptr;
// is codepoint with no matching font? return null immediately
if (gCodepointsWithNoFonts->test(aCh)) {
return nullptr;
}
GlobalFontMatch data(aCh, GetScriptCode(aCh),
(aFont ? aFont->GetStyle() : nullptr));
// find fonts that support the character
gPlatformFonts->Enumerate(FindFontForCharProc, &data);
if (data.mBestMatch) {
nsRefPtr<gfxFT2Font> font =
gfxFT2Font::GetOrMakeFont(static_cast<FontEntry*>(data.mBestMatch.get()),
aFont->GetStyle());
gfxFont* ret = font.forget().get();
return already_AddRefed<gfxFont>(ret);
}
// no match? add to set of non-matching codepoints
gCodepointsWithNoFonts->set(aCh);
return nullptr;
}
bool
gfxQtPlatform::GetPrefFontEntries(const nsCString& aKey, nsTArray<nsRefPtr<gfxFontEntry> > *array)
{
return mPrefFonts.Get(aKey, array);
}
void
gfxQtPlatform::SetPrefFontEntries(const nsCString& aKey, nsTArray<nsRefPtr<gfxFontEntry> >& array)
{
mPrefFonts.Put(aKey, array);
}
#endif
int32_t
gfxQtPlatform::GetDPI()
{
QDesktopWidget* rootWindow = qApp->desktop();
int32_t dpi = rootWindow->logicalDpiY(); // y-axis DPI for fonts
return dpi <= 0 ? 96 : dpi;
}
gfxImageFormat
gfxQtPlatform::GetOffscreenFormat()
{
return sOffscreenFormat;
}
int
gfxQtPlatform::GetScreenDepth() const
{
return mScreenDepth;
}