blob: a8e5f78aed34d488cb720cdf8d5b40ee47d9183e [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/renderer/render_view_impl.h"
#include "content/public/common/renderer_preferences.h"
#include "third_party/WebKit/public/web/linux/WebFontRendering.h"
#include "third_party/skia/include/core/SkFontLCDConfig.h"
#include "ui/gfx/font_render_params.h"
using blink::WebFontRendering;
namespace content {
namespace {
const int kMaxDefaultFontSize = 999;
SkPaint::Hinting RendererPreferencesToSkiaHinting(
const RendererPreferences& prefs) {
if (!prefs.should_antialias_text) {
// When anti-aliasing is off, GTK maps all non-zero hinting settings to
// 'Normal' hinting so we do the same. Otherwise, folks who have 'Slight'
// hinting selected will see readable text in everything expect Chromium.
switch (prefs.hinting) {
case gfx::FontRenderParams::HINTING_NONE:
return SkPaint::kNo_Hinting;
case gfx::FontRenderParams::HINTING_SLIGHT:
case gfx::FontRenderParams::HINTING_MEDIUM:
case gfx::FontRenderParams::HINTING_FULL:
return SkPaint::kNormal_Hinting;
default:
NOTREACHED();
return SkPaint::kNormal_Hinting;
}
}
switch (prefs.hinting) {
case gfx::FontRenderParams::HINTING_NONE: return SkPaint::kNo_Hinting;
case gfx::FontRenderParams::HINTING_SLIGHT: return SkPaint::kSlight_Hinting;
case gfx::FontRenderParams::HINTING_MEDIUM: return SkPaint::kNormal_Hinting;
case gfx::FontRenderParams::HINTING_FULL: return SkPaint::kFull_Hinting;
default:
NOTREACHED();
return SkPaint::kNormal_Hinting;
}
}
} // namespace
void RenderViewImpl::UpdateFontRenderingFromRendererPrefs() {
const RendererPreferences& prefs = renderer_preferences_;
WebFontRendering::SetHinting(RendererPreferencesToSkiaHinting(prefs));
WebFontRendering::SetAutoHint(prefs.use_autohinter);
WebFontRendering::SetUseBitmaps(prefs.use_bitmaps);
SkFontLCDConfig::SetSubpixelOrder(
gfx::FontRenderParams::SubpixelRenderingToSkiaLCDOrder(
prefs.subpixel_rendering));
SkFontLCDConfig::SetSubpixelOrientation(
gfx::FontRenderParams::SubpixelRenderingToSkiaLCDOrientation(
prefs.subpixel_rendering));
WebFontRendering::SetAntiAlias(prefs.should_antialias_text);
WebFontRendering::SetSubpixelRendering(
prefs.subpixel_rendering !=
gfx::FontRenderParams::SUBPIXEL_RENDERING_NONE);
WebFontRendering::SetSubpixelPositioning(prefs.use_subpixel_positioning);
if (prefs.default_font_size > 0 &&
prefs.default_font_size <= kMaxDefaultFontSize) {
WebFontRendering::SetDefaultFontSize(prefs.default_font_size);
}
#if !defined(OS_ANDROID)
if (!prefs.system_font_family_name.empty()) {
WebFontRendering::SetSystemFontFamily(
blink::WebString::FromUTF8(prefs.system_font_family_name));
}
#endif
}
} // namespace content