NativeFontResourceGDI.cpp (1677B)
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */ 3 /* This Source Code Form is subject to the terms of the Mozilla Public 4 * License, v. 2.0. If a copy of the MPL was not distributed with this 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 6 7 #include "NativeFontResourceGDI.h" 8 9 #include "Logging.h" 10 #include "mozilla/RefPtr.h" 11 #include "ScaledFontWin.h" 12 #include "UnscaledFontGDI.h" 13 14 namespace mozilla { 15 namespace gfx { 16 17 /* static */ 18 already_AddRefed<NativeFontResourceGDI> NativeFontResourceGDI::Create( 19 const uint8_t* aFontData, uint32_t aDataLength) { 20 DWORD numberOfFontsAdded; 21 HANDLE fontResourceHandle = ::AddFontMemResourceEx( 22 (PVOID)aFontData, aDataLength, 0, &numberOfFontsAdded); 23 if (!fontResourceHandle) { 24 gfxWarning() << "Failed to add memory font resource."; 25 return nullptr; 26 } 27 28 RefPtr<NativeFontResourceGDI> fontResouce = 29 new NativeFontResourceGDI(fontResourceHandle, aDataLength); 30 31 return fontResouce.forget(); 32 } 33 34 NativeFontResourceGDI::~NativeFontResourceGDI() { 35 ::RemoveFontMemResourceEx(mFontResourceHandle); 36 } 37 38 already_AddRefed<UnscaledFont> NativeFontResourceGDI::CreateUnscaledFont( 39 uint32_t aIndex, const uint8_t* aInstanceData, 40 uint32_t aInstanceDataLength) { 41 if (aInstanceDataLength < sizeof(LOGFONT)) { 42 gfxWarning() << "GDI unscaled font instance data is truncated."; 43 return nullptr; 44 } 45 46 const LOGFONT* logFont = reinterpret_cast<const LOGFONT*>(aInstanceData); 47 RefPtr<UnscaledFont> unscaledFont = new UnscaledFontGDI(*logFont); 48 return unscaledFont.forget(); 49 } 50 51 } // namespace gfx 52 } // namespace mozilla