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gecko-dev
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gecko-dev/gfx/thebes/gfxPlatformGtk.cpp

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23 KiB
C++
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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/. */
#ifdef MOZ_PANGO
#define PANGO_ENABLE_BACKEND
#define PANGO_ENABLE_ENGINE
#endif
#include "gfxPlatformGtk.h"
#include "nsUnicharUtils.h"
#include "nsUnicodeProperties.h"
#include "gfxFontconfigUtils.h"
#ifdef MOZ_PANGO
#include "gfxPangoFonts.h"
#include "gfxContext.h"
#include "gfxUserFontSet.h"
#include "gfxFT2FontBase.h"
#else
#include <ft2build.h>
#include FT_FREETYPE_H
#include "gfxFT2Fonts.h"
#endif
#include "mozilla/gfx/2D.h"
#include "cairo.h"
#include <gtk/gtk.h>
#include "gfxImageSurface.h"
#ifdef MOZ_X11
#include <gdk/gdkx.h>
#include "gfxXlibSurface.h"
#include "cairo-xlib.h"
#include "mozilla/Preferences.h"
/* Undefine the Status from Xlib since it will conflict with system headers on OSX */
#if defined(__APPLE__) && defined(Status)
#undef Status
#endif
#endif /* MOZ_X11 */
#include <fontconfig/fontconfig.h>
#include "nsMathUtils.h"
#define GDK_PIXMAP_SIZE_MAX 32767
using namespace mozilla;
using namespace mozilla::gfx;
using namespace mozilla::unicode;
gfxFontconfigUtils *gfxPlatformGtk::sFontconfigUtils = nullptr;
#ifndef MOZ_PANGO
typedef nsDataHashtable<nsStringHashKey, nsRefPtr<FontFamily> > FontTable;
typedef nsDataHashtable<nsCStringHashKey, nsTArray<nsRefPtr<gfxFontEntry> > > PrefFontTable;
static FontTable *gPlatformFonts = NULL;
static FontTable *gPlatformFontAliases = NULL;
static PrefFontTable *gPrefFonts = NULL;
static gfxSparseBitSet *gCodepointsWithNoFonts = NULL;
static FT_Library gPlatformFTLibrary = NULL;
#endif
static cairo_user_data_key_t cairo_gdk_drawable_key;
#ifdef MOZ_X11
bool gfxPlatformGtk::sUseXRender = true;
#endif
gfxPlatformGtk::gfxPlatformGtk()
{
if (!sFontconfigUtils)
sFontconfigUtils = gfxFontconfigUtils::GetFontconfigUtils();
#ifdef MOZ_X11
sUseXRender = mozilla::Preferences::GetBool("gfx.xrender.enabled");
#endif
#ifndef MOZ_PANGO
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
uint32_t canvasMask = (1 << BACKEND_CAIRO) | (1 << BACKEND_SKIA);
uint32_t contentMask = (1 << BACKEND_CAIRO);
InitBackendPrefs(canvasMask, contentMask);
}
gfxPlatformGtk::~gfxPlatformGtk()
{
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;
#ifdef NS_FREE_PERMANENT_DATA
// do cairo cleanup *before* closing down the FTLibrary,
// otherwise we'll crash when the gfxPlatform destructor
// calls it (bug 605009)
cairo_debug_reset_static_data();
FT_Done_FreeType(gPlatformFTLibrary);
gPlatformFTLibrary = NULL;
#endif
#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>
gfxPlatformGtk::CreateOffscreenSurface(const gfxIntSize& size,
gfxASurface::gfxContentType contentType)
{
nsRefPtr<gfxASurface> newSurface;
bool needsClear = true;
gfxASurface::gfxImageFormat imageFormat = OptimalFormatForContent(contentType);
#ifdef MOZ_X11
// XXX we really need a different interface here, something that passes
// in more context, including the display and/or target surface type that
// we should try to match
GdkScreen *gdkScreen = gdk_screen_get_default();
if (gdkScreen) {
if (UseXRender()) {
Screen *screen = gdk_x11_screen_get_xscreen(gdkScreen);
XRenderPictFormat* xrenderFormat =
gfxXlibSurface::FindRenderFormat(DisplayOfScreen(screen),
imageFormat);
if (xrenderFormat) {
newSurface = gfxXlibSurface::Create(screen, xrenderFormat, size);
}
} else {
// We're not going to use XRender, so we don't need to
// search for a render format
newSurface = new gfxImageSurface(size, imageFormat);
// The gfxImageSurface ctor zeroes this for us, no need to
// waste time clearing again
needsClear = false;
}
}
#endif
if (!newSurface) {
// We couldn't create a native surface for whatever reason;
// e.g., no display, no RENDER, bad size, etc.
// Fall back to image surface for the data.
newSurface = new gfxImageSurface(size, imageFormat);
}
if (newSurface->CairoStatus()) {
newSurface = nullptr; // surface isn't valid for some reason
}
if (newSurface && needsClear) {
gfxContext tmpCtx(newSurface);
tmpCtx.SetOperator(gfxContext::OPERATOR_CLEAR);
tmpCtx.Paint();
}
return newSurface.forget();
}
#ifdef MOZ_PANGO
nsresult
gfxPlatformGtk::GetFontList(nsIAtom *aLangGroup,
const nsACString& aGenericFamily,
nsTArray<nsString>& aListOfFonts)
{
return sFontconfigUtils->GetFontList(aLangGroup, aGenericFamily,
aListOfFonts);
}
nsresult
gfxPlatformGtk::UpdateFontList()
{
return sFontconfigUtils->UpdateFontList();
}
nsresult
gfxPlatformGtk::ResolveFontName(const nsAString& aFontName,
FontResolverCallback aCallback,
void *aClosure,
bool& aAborted)
{
return sFontconfigUtils->ResolveFontName(aFontName, aCallback,
aClosure, aAborted);
}
nsresult
gfxPlatformGtk::GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName)
{
return sFontconfigUtils->GetStandardFamilyName(aFontName, aFamilyName);
}
gfxFontGroup *
gfxPlatformGtk::CreateFontGroup(const nsAString &aFamilies,
const gfxFontStyle *aStyle,
gfxUserFontSet *aUserFontSet)
{
return new gfxPangoFontGroup(aFamilies, aStyle, aUserFontSet);
}
gfxFontEntry*
gfxPlatformGtk::LookupLocalFont(const gfxProxyFontEntry *aProxyEntry,
const nsAString& aFontName)
{
return gfxPangoFontGroup::NewFontEntry(*aProxyEntry, aFontName);
}
gfxFontEntry*
gfxPlatformGtk::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
gfxPlatformGtk::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;
}
#else
nsresult
gfxPlatformGtk::GetFontList(nsIAtom *aLangGroup,
const nsACString& aGenericFamily,
nsTArray<nsString>& aListOfFonts)
{
return sFontconfigUtils->GetFontList(aLangGroup, aGenericFamily,
aListOfFonts);
}
nsresult
gfxPlatformGtk::UpdateFontList()
{
FcPattern *pat = NULL;
FcObjectSet *os = NULL;
FcFontSet *fs = NULL;
int32_t result = -1;
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;
//printf("Family: %s\n", str);
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);
//printf(" - file: %s\n", str);
}
int x;
if (FcPatternGetInteger(fs->fonts[i], FC_INDEX, 0, &x) == FcResultMatch) {
//printf(" - index: %d\n", x);
fe->mFTFontIndex = x;
} else {
fe->mFTFontIndex = 0;
}
fe->mWeight = gfxFontconfigUtils::GetThebesWeight(fs->fonts[i]);
//printf(" - weight: %d\n", fe->mWeight);
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;
}
//printf(" - slant: %d\n", x);
}
//if (FcPatternGetInteger(fs->fonts[i], FC_WIDTH, 0, &x) == FcResultMatch)
//printf(" - width: %d\n", x);
// XXX deal with font-stretch stuff later
}
if (pat)
FcPatternDestroy(pat);
if (os)
FcObjectSetDestroy(os);
if (fs)
FcFontSetDestroy(fs);
return sFontconfigUtils->UpdateFontList();
}
nsresult
gfxPlatformGtk::ResolveFontName(const nsAString& aFontName,
FontResolverCallback aCallback,
void *aClosure,
bool& aAborted)
{
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)) {
//printf("Adding alias: %s -> %s\n", utf8Name.get(), str);
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)) {
//printf("Adding alias: %s -> %s\n", utf8Name.get(), str);
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;
}
nsresult
gfxPlatformGtk::GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName)
{
return sFontconfigUtils->GetStandardFamilyName(aFontName, aFamilyName);
}
gfxFontGroup *
gfxPlatformGtk::CreateFontGroup(const nsAString &aFamilies,
const gfxFontStyle *aStyle,
gfxUserFontSet *aUserFontSet)
{
return new gfxFT2FontGroup(aFamilies, aStyle, aUserFontSet);
}
#endif
static int32_t sDPI = 0;
int32_t
gfxPlatformGtk::GetDPI()
{
if (!sDPI) {
// Make sure init is run so we have a resolution
GdkScreen *screen = gdk_screen_get_default();
gtk_settings_get_for_screen(screen);
sDPI = int32_t(round(gdk_screen_get_resolution(screen)));
if (sDPI <= 0) {
// Fall back to something sane
sDPI = 96;
}
}
return sDPI;
}
gfxImageFormat
gfxPlatformGtk::GetOffscreenFormat()
{
// Make sure there is a screen
GdkScreen *screen = gdk_screen_get_default();
if (screen && gdk_visual_get_depth(gdk_visual_get_system()) == 16) {
return gfxASurface::ImageFormatRGB16_565;
}
return gfxASurface::ImageFormatRGB24;
}
qcms_profile *
gfxPlatformGtk::GetPlatformCMSOutputProfile()
{
#ifdef MOZ_X11
const char EDID1_ATOM_NAME[] = "XFree86_DDC_EDID1_RAWDATA";
const char ICC_PROFILE_ATOM_NAME[] = "_ICC_PROFILE";
Atom edidAtom, iccAtom;
Display *dpy = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
// In xpcshell tests, we never initialize X and hence don't have a Display.
// In this case, there's no output colour management to be done, so we just
// return NULL.
if (!dpy) {
return NULL;
}
Window root = gdk_x11_get_default_root_xwindow();
Atom retAtom;
int retFormat;
unsigned long retLength, retAfter;
unsigned char *retProperty ;
iccAtom = XInternAtom(dpy, ICC_PROFILE_ATOM_NAME, TRUE);
if (iccAtom) {
// read once to get size, once for the data
if (Success == XGetWindowProperty(dpy, root, iccAtom,
0, INT_MAX /* length */,
False, AnyPropertyType,
&retAtom, &retFormat, &retLength,
&retAfter, &retProperty)) {
qcms_profile* profile = NULL;
if (retLength > 0)
profile = qcms_profile_from_memory(retProperty, retLength);
XFree(retProperty);
if (profile) {
#ifdef DEBUG_tor
fprintf(stderr,
"ICM profile read from %s successfully\n",
ICC_PROFILE_ATOM_NAME);
#endif
return profile;
}
}
}
edidAtom = XInternAtom(dpy, EDID1_ATOM_NAME, TRUE);
if (edidAtom) {
if (Success == XGetWindowProperty(dpy, root, edidAtom, 0, 32,
False, AnyPropertyType,
&retAtom, &retFormat, &retLength,
&retAfter, &retProperty)) {
double gamma;
qcms_CIE_xyY whitePoint;
qcms_CIE_xyYTRIPLE primaries;
if (retLength != 128) {
#ifdef DEBUG_tor
fprintf(stderr, "Short EDID data\n");
#endif
return nullptr;
}
// Format documented in "VESA E-EDID Implementation Guide"
gamma = (100 + retProperty[0x17]) / 100.0;
whitePoint.x = ((retProperty[0x21] << 2) |
(retProperty[0x1a] >> 2 & 3)) / 1024.0;
whitePoint.y = ((retProperty[0x22] << 2) |
(retProperty[0x1a] >> 0 & 3)) / 1024.0;
whitePoint.Y = 1.0;
primaries.red.x = ((retProperty[0x1b] << 2) |
(retProperty[0x19] >> 6 & 3)) / 1024.0;
primaries.red.y = ((retProperty[0x1c] << 2) |
(retProperty[0x19] >> 4 & 3)) / 1024.0;
primaries.red.Y = 1.0;
primaries.green.x = ((retProperty[0x1d] << 2) |
(retProperty[0x19] >> 2 & 3)) / 1024.0;
primaries.green.y = ((retProperty[0x1e] << 2) |
(retProperty[0x19] >> 0 & 3)) / 1024.0;
primaries.green.Y = 1.0;
primaries.blue.x = ((retProperty[0x1f] << 2) |
(retProperty[0x1a] >> 6 & 3)) / 1024.0;
primaries.blue.y = ((retProperty[0x20] << 2) |
(retProperty[0x1a] >> 4 & 3)) / 1024.0;
primaries.blue.Y = 1.0;
XFree(retProperty);
#ifdef DEBUG_tor
fprintf(stderr, "EDID gamma: %f\n", gamma);
fprintf(stderr, "EDID whitepoint: %f %f %f\n",
whitePoint.x, whitePoint.y, whitePoint.Y);
fprintf(stderr, "EDID primaries: [%f %f %f] [%f %f %f] [%f %f %f]\n",
primaries.Red.x, primaries.Red.y, primaries.Red.Y,
primaries.Green.x, primaries.Green.y, primaries.Green.Y,
primaries.Blue.x, primaries.Blue.y, primaries.Blue.Y);
#endif
qcms_profile* profile =
qcms_profile_create_rgb_with_gamma(whitePoint, primaries, gamma);
#ifdef DEBUG_tor
if (profile) {
fprintf(stderr,
"ICM profile read from %s successfully\n",
EDID1_ATOM_NAME);
}
#endif
return profile;
}
}
#endif
return nullptr;
}
#ifndef MOZ_PANGO
FT_Library
gfxPlatformGtk::GetFTLibrary()
{
return gPlatformFTLibrary;
}
FontFamily *
gfxPlatformGtk::FindFontFamily(const nsAString& aName)
{
nsAutoString name(aName);
ToLowerCase(name);
nsRefPtr<FontFamily> ff;
if (!gPlatformFonts->Get(name, &ff)) {
return nullptr;
}
return ff.get();
}
FontEntry *
gfxPlatformGtk::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>
gfxPlatformGtk::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
gfxPlatformGtk::GetPrefFontEntries(const nsCString& aKey, nsTArray<nsRefPtr<gfxFontEntry> > *aFontEntryList)
{
return gPrefFonts->Get(aKey, aFontEntryList);
}
void
gfxPlatformGtk::SetPrefFontEntries(const nsCString& aKey, nsTArray<nsRefPtr<gfxFontEntry> >& aFontEntryList)
{
gPrefFonts->Put(aKey, aFontEntryList);
}
#endif
#if (MOZ_WIDGET_GTK == 2)
void
gfxPlatformGtk::SetGdkDrawable(gfxASurface *target,
GdkDrawable *drawable)
{
if (target->CairoStatus())
return;
g_object_ref(drawable);
cairo_surface_set_user_data (target->CairoSurface(),
&cairo_gdk_drawable_key,
drawable,
g_object_unref);
}
GdkDrawable *
gfxPlatformGtk::GetGdkDrawable(gfxASurface *target)
{
if (target->CairoStatus())
return NULL;
GdkDrawable *result;
result = (GdkDrawable*) cairo_surface_get_user_data (target->CairoSurface(),
&cairo_gdk_drawable_key);
if (result)
return result;
#ifdef MOZ_X11
if (target->GetType() != gfxASurface::SurfaceTypeXlib)
return NULL;
gfxXlibSurface *xs = static_cast<gfxXlibSurface*>(target);
// try looking it up in gdk's table
result = (GdkDrawable*) gdk_xid_table_lookup(xs->XDrawable());
if (result) {
SetGdkDrawable(target, result);
return result;
}
#endif
return NULL;
}
#endif
TemporaryRef<ScaledFont>
gfxPlatformGtk::GetScaledFontForFont(DrawTarget* aTarget, gfxFont *aFont)
{
NativeFont nativeFont;
if (aTarget->GetType() == BACKEND_CAIRO) {
nativeFont.mType = NATIVE_FONT_CAIRO_FONT_FACE;
nativeFont.mFont = NULL;
return Factory::CreateScaledFontWithCairo(nativeFont, aFont->GetAdjustedSize(), aFont->GetCairoScaledFont());
}
NS_ASSERTION(aFont->GetType() == gfxFont::FONT_TYPE_FT2, "Expecting Freetype font");
nativeFont.mType = NATIVE_FONT_SKIA_FONT_FACE;
nativeFont.mFont = static_cast<gfxFT2FontBase*>(aFont)->GetFontOptions();
return Factory::CreateScaledFontForNativeFont(nativeFont, aFont->GetAdjustedSize());
}
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