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https://github.com/mozilla/gecko-dev.git
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354 lines
11 KiB
C++
354 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GFX_GDIFONTLIST_H
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#define GFX_GDIFONTLIST_H
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#include "mozilla/MemoryReporting.h"
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#include "gfxWindowsPlatform.h"
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#include "gfxPlatformFontList.h"
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#include "nsGkAtoms.h"
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#include <windows.h>
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class AutoDC // get the global device context, and auto-release it on destruction
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{
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public:
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AutoDC() {
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mDC = ::GetDC(nullptr);
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}
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~AutoDC() {
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::ReleaseDC(nullptr, mDC);
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}
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HDC GetDC() {
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return mDC;
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}
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private:
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HDC mDC;
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};
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class AutoSelectFont // select a font into the given DC, and auto-restore
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{
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public:
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AutoSelectFont(HDC aDC, LOGFONTW *aLogFont)
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: mOwnsFont(false)
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{
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mFont = ::CreateFontIndirectW(aLogFont);
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if (mFont) {
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mOwnsFont = true;
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mDC = aDC;
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mOldFont = (HFONT)::SelectObject(aDC, mFont);
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} else {
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mOldFont = nullptr;
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}
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}
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AutoSelectFont(HDC aDC, HFONT aFont)
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: mOwnsFont(false)
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{
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mDC = aDC;
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mFont = aFont;
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mOldFont = (HFONT)::SelectObject(aDC, aFont);
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}
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~AutoSelectFont() {
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if (mOldFont) {
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::SelectObject(mDC, mOldFont);
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if (mOwnsFont) {
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::DeleteObject(mFont);
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}
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}
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}
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bool IsValid() const {
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return mFont != nullptr;
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}
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HFONT GetFont() const {
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return mFont;
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}
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private:
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HDC mDC;
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HFONT mFont;
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HFONT mOldFont;
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bool mOwnsFont;
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};
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/**
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* List of different types of fonts we support on Windows.
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* These can generally be lumped in to 3 categories where we have to
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* do special things: Really old fonts bitmap and vector fonts (device
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* and raster), Type 1 fonts, and TrueType/OpenType fonts.
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*
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* This list is sorted in order from least prefered to most prefered.
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* We prefer Type1 fonts over OpenType fonts to avoid falling back to
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* things like Arial (opentype) when you ask for Helvetica (type1)
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**/
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enum gfxWindowsFontType {
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GFX_FONT_TYPE_UNKNOWN = 0,
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GFX_FONT_TYPE_DEVICE,
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GFX_FONT_TYPE_RASTER,
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GFX_FONT_TYPE_TRUETYPE,
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GFX_FONT_TYPE_PS_OPENTYPE,
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GFX_FONT_TYPE_TT_OPENTYPE,
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GFX_FONT_TYPE_TYPE1
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};
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// A single member of a font family (i.e. a single face, such as Times Italic)
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// represented as a LOGFONT that will resolve to the correct face.
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// This replaces FontEntry from gfxWindowsFonts.h/cpp.
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class GDIFontEntry : public gfxFontEntry
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{
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public:
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LPLOGFONTW GetLogFont() { return &mLogFont; }
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nsresult ReadCMAP(FontInfoData *aFontInfoData = nullptr);
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virtual bool IsSymbolFont();
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void FillLogFont(LOGFONTW *aLogFont, uint16_t aWeight, gfxFloat aSize,
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bool aUseCleartype);
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static gfxWindowsFontType DetermineFontType(const NEWTEXTMETRICW& metrics,
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DWORD fontType)
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{
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gfxWindowsFontType feType;
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if (metrics.ntmFlags & NTM_TYPE1)
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feType = GFX_FONT_TYPE_TYPE1;
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else if (metrics.ntmFlags & NTM_PS_OPENTYPE)
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feType = GFX_FONT_TYPE_PS_OPENTYPE;
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else if (metrics.ntmFlags & NTM_TT_OPENTYPE)
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feType = GFX_FONT_TYPE_TT_OPENTYPE;
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else if (fontType == TRUETYPE_FONTTYPE)
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feType = GFX_FONT_TYPE_TRUETYPE;
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else if (fontType == RASTER_FONTTYPE)
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feType = GFX_FONT_TYPE_RASTER;
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else if (fontType == DEVICE_FONTTYPE)
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feType = GFX_FONT_TYPE_DEVICE;
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else
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feType = GFX_FONT_TYPE_UNKNOWN;
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return feType;
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}
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bool IsType1() const {
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return (mFontType == GFX_FONT_TYPE_TYPE1);
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}
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bool IsTrueType() const {
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return (mFontType == GFX_FONT_TYPE_TRUETYPE ||
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mFontType == GFX_FONT_TYPE_PS_OPENTYPE ||
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mFontType == GFX_FONT_TYPE_TT_OPENTYPE);
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}
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virtual bool MatchesGenericFamily(const nsACString& aGeneric) const {
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if (aGeneric.IsEmpty()) {
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return true;
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}
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// Japanese 'Mincho' fonts do not belong to FF_MODERN even if
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// they are fixed pitch because they have variable stroke width.
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if (mWindowsFamily == FF_ROMAN && mWindowsPitch & FIXED_PITCH) {
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return aGeneric.EqualsLiteral("monospace");
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}
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// Japanese 'Gothic' fonts do not belong to FF_SWISS even if
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// they are variable pitch because they have constant stroke width.
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if (mWindowsFamily == FF_MODERN && mWindowsPitch & VARIABLE_PITCH) {
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return aGeneric.EqualsLiteral("sans-serif");
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}
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// All other fonts will be grouped correctly using family...
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switch (mWindowsFamily) {
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case FF_DONTCARE:
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return false;
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case FF_ROMAN:
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return aGeneric.EqualsLiteral("serif");
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case FF_SWISS:
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return aGeneric.EqualsLiteral("sans-serif");
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case FF_MODERN:
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return aGeneric.EqualsLiteral("monospace");
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case FF_SCRIPT:
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return aGeneric.EqualsLiteral("cursive");
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case FF_DECORATIVE:
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return aGeneric.EqualsLiteral("fantasy");
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}
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return false;
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}
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virtual bool SupportsLangGroup(nsIAtom* aLangGroup) const {
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if (!aLangGroup || aLangGroup == nsGkAtoms::Unicode) {
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return true;
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}
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int16_t bit = -1;
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/* map our langgroup names in to Windows charset bits */
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if (aLangGroup == nsGkAtoms::x_western) {
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bit = ANSI_CHARSET;
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} else if (aLangGroup == nsGkAtoms::Japanese) {
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bit = SHIFTJIS_CHARSET;
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} else if (aLangGroup == nsGkAtoms::ko) {
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bit = HANGEUL_CHARSET;
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} else if (aLangGroup == nsGkAtoms::ko_xxx) {
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bit = JOHAB_CHARSET;
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} else if (aLangGroup == nsGkAtoms::zh_cn) {
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bit = GB2312_CHARSET;
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} else if (aLangGroup == nsGkAtoms::zh_tw) {
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bit = CHINESEBIG5_CHARSET;
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} else if (aLangGroup == nsGkAtoms::el_) {
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bit = GREEK_CHARSET;
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} else if (aLangGroup == nsGkAtoms::tr) {
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bit = TURKISH_CHARSET;
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} else if (aLangGroup == nsGkAtoms::he) {
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bit = HEBREW_CHARSET;
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} else if (aLangGroup == nsGkAtoms::ar) {
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bit = ARABIC_CHARSET;
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} else if (aLangGroup == nsGkAtoms::x_baltic) {
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bit = BALTIC_CHARSET;
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} else if (aLangGroup == nsGkAtoms::x_cyrillic) {
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bit = RUSSIAN_CHARSET;
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} else if (aLangGroup == nsGkAtoms::th) {
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bit = THAI_CHARSET;
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} else if (aLangGroup == nsGkAtoms::x_central_euro) {
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bit = EASTEUROPE_CHARSET;
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} else if (aLangGroup == nsGkAtoms::x_symbol) {
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bit = SYMBOL_CHARSET;
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}
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if (bit != -1) {
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return mCharset.test(bit);
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}
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return false;
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}
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virtual bool SupportsRange(uint8_t range) {
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return mUnicodeRanges.test(range);
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}
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virtual bool SkipDuringSystemFallback() {
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return !HasCmapTable(); // explicitly skip non-SFNT fonts
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}
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virtual bool TestCharacterMap(uint32_t aCh);
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virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
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FontListSizes* aSizes) const;
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// create a font entry for a font with a given name
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static GDIFontEntry* CreateFontEntry(const nsAString& aName,
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gfxWindowsFontType aFontType,
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bool aItalic,
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uint16_t aWeight, int16_t aStretch,
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gfxUserFontData* aUserFontData,
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bool aFamilyHasItalicFace);
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// create a font entry for a font referenced by its fullname
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static GDIFontEntry* LoadLocalFont(const gfxProxyFontEntry &aProxyEntry,
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const nsAString& aFullname);
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uint8_t mWindowsFamily;
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uint8_t mWindowsPitch;
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gfxWindowsFontType mFontType;
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bool mForceGDI : 1;
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// For src:local user-fonts, we keep track of whether the platform family
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// contains an italic face, because in this case we can't safely ask GDI
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// to create synthetic italics (oblique) via the LOGFONT.
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// (For other types of font, this is just set to false.)
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bool mFamilyHasItalicFace : 1;
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gfxSparseBitSet mCharset;
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gfxSparseBitSet mUnicodeRanges;
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protected:
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friend class gfxWindowsFont;
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GDIFontEntry(const nsAString& aFaceName, gfxWindowsFontType aFontType,
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bool aItalic, uint16_t aWeight, int16_t aStretch,
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gfxUserFontData *aUserFontData, bool aFamilyHasItalicFace);
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void InitLogFont(const nsAString& aName, gfxWindowsFontType aFontType);
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virtual gfxFont *CreateFontInstance(const gfxFontStyle *aFontStyle, bool aNeedsBold);
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virtual nsresult CopyFontTable(uint32_t aTableTag,
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FallibleTArray<uint8_t>& aBuffer) MOZ_OVERRIDE;
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LOGFONTW mLogFont;
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};
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// a single font family, referencing one or more faces
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class GDIFontFamily : public gfxFontFamily
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{
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public:
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GDIFontFamily(nsAString &aName) :
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gfxFontFamily(aName) {}
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virtual void FindStyleVariations(FontInfoData *aFontInfoData = nullptr);
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private:
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static int CALLBACK FamilyAddStylesProc(const ENUMLOGFONTEXW *lpelfe,
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const NEWTEXTMETRICEXW *nmetrics,
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DWORD fontType, LPARAM data);
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};
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class gfxGDIFontList : public gfxPlatformFontList {
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public:
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static gfxGDIFontList* PlatformFontList() {
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return static_cast<gfxGDIFontList*>(sPlatformFontList);
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}
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// initialize font lists
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virtual nsresult InitFontList();
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virtual gfxFontFamily* GetDefaultFont(const gfxFontStyle* aStyle);
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virtual gfxFontFamily* FindFamily(const nsAString& aFamily);
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virtual gfxFontEntry* LookupLocalFont(const gfxProxyFontEntry *aProxyEntry,
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const nsAString& aFontName);
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virtual gfxFontEntry* MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
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const uint8_t *aFontData, uint32_t aLength);
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virtual void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
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FontListSizes* aSizes) const;
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virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
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FontListSizes* aSizes) const;
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private:
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friend class gfxWindowsPlatform;
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gfxGDIFontList();
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nsresult GetFontSubstitutes();
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static int CALLBACK EnumFontFamExProc(ENUMLOGFONTEXW *lpelfe,
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NEWTEXTMETRICEXW *lpntme,
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DWORD fontType,
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LPARAM lParam);
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virtual already_AddRefed<FontInfoData> CreateFontInfoData();
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#ifdef MOZ_BUNDLED_FONTS
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void ActivateBundledFonts();
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#endif
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typedef nsRefPtrHashtable<nsStringHashKey, gfxFontFamily> FontTable;
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FontTable mFontSubstitutes;
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nsTArray<nsString> mNonExistingFonts;
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};
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#endif /* GFX_GDIFONTLIST_H */
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