michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "ScaledFontCairo.h"
michael@0: #include "Logging.h"
michael@0: 
michael@0: #ifdef MOZ_ENABLE_FREETYPE
michael@0: #include <ft2build.h>
michael@0: #include FT_FREETYPE_H
michael@0: #include "cairo-ft.h"
michael@0: #endif
michael@0: 
michael@0: #if defined(USE_SKIA) && defined(MOZ_ENABLE_FREETYPE)
michael@0: #include "skia/SkTypeface.h"
michael@0: #include "skia/SkTypeface_cairo.h"
michael@0: #endif
michael@0: 
michael@0: #include <string>
michael@0: 
michael@0: typedef struct FT_FaceRec_* FT_Face;
michael@0: 
michael@0: using namespace std;
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace gfx {
michael@0: 
michael@0: // On Linux and Android our "platform" font is a cairo_scaled_font_t and we use
michael@0: // an SkFontHost implementation that allows Skia to render using this.
michael@0: // This is mainly because FT_Face is not good for sharing between libraries, which
michael@0: // is a requirement when we consider runtime switchable backends and so on
michael@0: ScaledFontCairo::ScaledFontCairo(cairo_scaled_font_t* aScaledFont, Float aSize)
michael@0:   : ScaledFontBase(aSize)
michael@0: { 
michael@0:   SetCairoScaledFont(aScaledFont);
michael@0: }
michael@0: 
michael@0: #if defined(USE_SKIA) && defined(MOZ_ENABLE_FREETYPE)
michael@0: SkTypeface* ScaledFontCairo::GetSkTypeface()
michael@0: {
michael@0:   if (!mTypeface) {
michael@0:     cairo_font_face_t* fontFace = cairo_scaled_font_get_font_face(mScaledFont);
michael@0:     FT_Face face = cairo_ft_scaled_font_lock_face(mScaledFont);
michael@0: 
michael@0:     int style = SkTypeface::kNormal;
michael@0: 
michael@0:     if (face->style_flags & FT_STYLE_FLAG_ITALIC)
michael@0:     style |= SkTypeface::kItalic;
michael@0: 
michael@0:     if (face->style_flags & FT_STYLE_FLAG_BOLD)
michael@0:       style |= SkTypeface::kBold;
michael@0: 
michael@0:     bool isFixedWidth = face->face_flags & FT_FACE_FLAG_FIXED_WIDTH;
michael@0:     cairo_ft_scaled_font_unlock_face(mScaledFont);
michael@0: 
michael@0:     mTypeface = SkCreateTypefaceFromCairoFont(fontFace, (SkTypeface::Style)style, isFixedWidth);
michael@0:   }
michael@0: 
michael@0:   return mTypeface;
michael@0: }
michael@0: #endif
michael@0: 
michael@0: }
michael@0: }