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gecko-dev/gfx/thebes/gfxQtPlatform.cpp

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Foundation code.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Vladimir Vukicevic <vladimir@pobox.com>
* Masayuki Nakano <masayuki@d-toybox.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include <QPixmap>
#include <QX11Info>
#include <QApplication>
#include <QDesktopWidget>
#include <QPaintEngine>
#include "gfxQtPlatform.h"
#include "gfxFontconfigUtils.h"
#include "cairo.h"
#include "gfxImageSurface.h"
#include "gfxQPainterSurface.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 "nsIPrefBranch.h"
#include "nsIPrefService.h"
// Because the QPainter backend has some problems with glyphs rendering
// it is better to use image or xlib cairo backends by default
#if (MOZ_PLATFORM_MAEMO == 6)
#define DEFAULT_RENDER_MODE RENDER_BUFFERED
#else
#define DEFAULT_RENDER_MODE RENDER_DIRECT
#endif
static QPaintEngine::Type sDefaultQtPaintEngineType = QPaintEngine::X11;
gfxFontconfigUtils *gfxQtPlatform::sFontconfigUtils = nsnull;
static cairo_user_data_key_t cairo_qt_pixmap_key;
static void do_qt_pixmap_unref (void *data)
{
QPixmap *pmap = (QPixmap*)data;
delete pmap;
}
#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;
PRInt32 ival;
// 0 - default gfxQPainterSurface
// 1 - gfxImageSurface
nsCOMPtr<nsIPrefBranch> prefs = do_GetService(NS_PREFSERVICE_CONTRACTID, &rv);
if (prefs) {
rv = prefs->GetIntPref("mozilla.widget-qt.render-mode", &ival);
if (NS_FAILED(rv))
ival = 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);
sDefaultQtPaintEngineType = pixmap.paintEngine()->type();
}
gfxQtPlatform::~gfxQtPlatform()
{
gfxFontconfigUtils::Shutdown();
sFontconfigUtils = nsnull;
#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
}
already_AddRefed<gfxASurface>
gfxQtPlatform::CreateOffscreenSurface(const gfxIntSize& size,
gfxASurface::gfxContentType contentType)
{
nsRefPtr<gfxASurface> newSurface = nsnull;
// try to optimize it for 16bpp screen
gfxASurface::gfxImageFormat imageFormat = gfxASurface::FormatFromContent(contentType);
if (gfxASurface::CONTENT_COLOR == contentType) {
imageFormat = GetOffscreenFormat();
}
#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(QX11Info().display(), imageFormat);
Screen* screen = ScreenOfDisplay(QX11Info().display(), QX11Info().screen());
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 = PR_FALSE;
if (FcPatternGetInteger(fs->fonts[i], FC_SLANT, 0, &x) == FcResultMatch) {
switch (x) {
case FC_SLANT_ITALIC:
case FC_SLANT_OBLIQUE:
fe->mItalic = PR_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,
PRBool& 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;
}
nsCAutoString 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);
#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 PRUint8 *aFontData, PRUint32 aLength)
{
// passing ownership of the font data to the new font entry
return gfxPangoFontGroup::NewFontEntry(*aProxyEntry,
aFontData, aLength);
}
PRBool
gfxQtPlatform::IsFontFormatSupported(nsIURI *aFontURI, PRUint32 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 PR_TRUE;
}
// reject all other formats, known and unknown
if (aFormatFlags != 0) {
return PR_FALSE;
}
// no format hint set, need to look at data
return PR_TRUE;
}
#endif
qcms_profile*
gfxQtPlatform::GetPlatformCMSOutputProfile()
{
return nsnull;
}
#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 nsnull;
}
return ff.get();
}
FontEntry *
gfxQtPlatform::FindFontEntry(const nsAString& aName, const gfxFontStyle& aFontStyle)
{
nsRefPtr<FontFamily> ff = FindFontFamily(aName);
if (!ff)
return nsnull;
return ff->FindFontEntry(aFontStyle);
}
static PLDHashOperator
FindFontForCharProc(nsStringHashKey::KeyType aKey,
nsRefPtr<FontFamily>& aFontFamily,
void* aUserArg)
{
FontSearch *data = (FontSearch*)aUserArg;
aFontFamily->FindFontForChar(data);
return PL_DHASH_NEXT;
}
already_AddRefed<gfxFont>
gfxQtPlatform::FindFontForChar(PRUint32 aCh, gfxFont *aFont)
{
if (!gPlatformFonts || !gCodepointsWithNoFonts)
return nsnull;
// is codepoint with no matching font? return null immediately
if (gCodepointsWithNoFonts->test(aCh)) {
return nsnull;
}
FontSearch data(aCh, aFont);
// 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 nsnull;
}
PRBool
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
PRInt32
gfxQtPlatform::GetDPI()
{
QDesktopWidget* rootWindow = qApp->desktop();
PRInt32 dpi = rootWindow->logicalDpiY(); // y-axis DPI for fonts
return dpi <= 0 ? 96 : dpi;
}
gfxImageFormat
gfxQtPlatform::GetOffscreenFormat()
{
if (QX11Info::appDepth() == 16) {
return gfxASurface::ImageFormatRGB16_565;
}
return gfxASurface::ImageFormatRGB24;
}
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