gfx/2d/ScaledFontCairo.cpp@97036ab72558 (annotated)
gfx/2d/ScaledFontCairo.cpp
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- |
| michael@0 | 2 | * This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #include "ScaledFontCairo.h" |
| michael@0 | 7 | #include "Logging.h" |
| michael@0 | 8 | |
| michael@0 | 9 | #ifdef MOZ_ENABLE_FREETYPE |
| michael@0 | 10 | #include <ft2build.h> |
| michael@0 | 11 | #include FT_FREETYPE_H |
| michael@0 | 12 | #include "cairo-ft.h" |
| michael@0 | 13 | #endif |
| michael@0 | 14 | |
| michael@0 | 15 | #if defined(USE_SKIA) && defined(MOZ_ENABLE_FREETYPE) |
| michael@0 | 16 | #include "skia/SkTypeface.h" |
| michael@0 | 17 | #include "skia/SkTypeface_cairo.h" |
| michael@0 | 18 | #endif |
| michael@0 | 19 | |
| michael@0 | 20 | #include <string> |
| michael@0 | 21 | |
| michael@0 | 22 | typedef struct FT_FaceRec_* FT_Face; |
| michael@0 | 23 | |
| michael@0 | 24 | using namespace std; |
| michael@0 | 25 | |
| michael@0 | 26 | namespace mozilla { |
| michael@0 | 27 | namespace gfx { |
| michael@0 | 28 | |
| michael@0 | 29 | // On Linux and Android our "platform" font is a cairo_scaled_font_t and we use |
| michael@0 | 30 | // an SkFontHost implementation that allows Skia to render using this. |
| michael@0 | 31 | // This is mainly because FT_Face is not good for sharing between libraries, which |
| michael@0 | 32 | // is a requirement when we consider runtime switchable backends and so on |
| michael@0 | 33 | ScaledFontCairo::ScaledFontCairo(cairo_scaled_font_t* aScaledFont, Float aSize) |
| michael@0 | 34 | : ScaledFontBase(aSize) |
| michael@0 | 35 | { |
| michael@0 | 36 | SetCairoScaledFont(aScaledFont); |
| michael@0 | 37 | } |
| michael@0 | 38 | |
| michael@0 | 39 | #if defined(USE_SKIA) && defined(MOZ_ENABLE_FREETYPE) |
| michael@0 | 40 | SkTypeface* ScaledFontCairo::GetSkTypeface() |
| michael@0 | 41 | { |
| michael@0 | 42 | if (!mTypeface) { |
| michael@0 | 43 | cairo_font_face_t* fontFace = cairo_scaled_font_get_font_face(mScaledFont); |
| michael@0 | 44 | FT_Face face = cairo_ft_scaled_font_lock_face(mScaledFont); |
| michael@0 | 45 | |
| michael@0 | 46 | int style = SkTypeface::kNormal; |
| michael@0 | 47 | |
| michael@0 | 48 | if (face->style_flags & FT_STYLE_FLAG_ITALIC) |
| michael@0 | 49 | style |= SkTypeface::kItalic; |
| michael@0 | 50 | |
| michael@0 | 51 | if (face->style_flags & FT_STYLE_FLAG_BOLD) |
| michael@0 | 52 | style |= SkTypeface::kBold; |
| michael@0 | 53 | |
| michael@0 | 54 | bool isFixedWidth = face->face_flags & FT_FACE_FLAG_FIXED_WIDTH; |
| michael@0 | 55 | cairo_ft_scaled_font_unlock_face(mScaledFont); |
| michael@0 | 56 | |
| michael@0 | 57 | mTypeface = SkCreateTypefaceFromCairoFont(fontFace, (SkTypeface::Style)style, isFixedWidth); |
| michael@0 | 58 | } |
| michael@0 | 59 | |
| michael@0 | 60 | return mTypeface; |
| michael@0 | 61 | } |
| michael@0 | 62 | #endif |
| michael@0 | 63 | |
| michael@0 | 64 | } |
| michael@0 | 65 | } |
