Chromium change of sharing some WebKit API between Android/Linux.

ui/gfx/font_render_params_linux.cc

 // 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 "ui/gfx/font_render_params_linux.h"
 
 #include "base/logging.h"
 
 #if defined(TOOLKIT_GTK)
 #include <gtk/gtk.h>
 #else
 #include <fontconfig/fontconfig.h>
 #include "base/command_line.h"
 #include "ui/base/ui_base_switches.h"
 #endif
 
 namespace gfx {
 
 namespace {
 
 // Initializes |params| with the system's default settings.
 void LoadDefaults(FontRenderParams* params) {
 #if defined(TOOLKIT_GTK)
   params->antialiasing = true;
   params->subpixel_positioning = false;
-  params->autohinter = false;
+  params->autohinter = true;

[Daniel Erat, 2012/06/24 14:51:25]

Why is the default for GTK being changed here?

[Xianzhu, 2012/06/26 12:46:45]

Though GTK had a different value here, the value was not used as it is not sent
to WebKit or Skia. In WebKit, autohint is set to true. To keep the original
behavior unchanged, I changed the value here to true as the value is now sent to
WebFontRendering::setAutoHint().

[Daniel Erat, 2012/06/26 14:17:12]

Was WebKit always turning autohinting on automatically?  If so, sorry for
missing it.  My intent was to disable autohinting on GTK, as I think that that
matches Ubuntu's default settings.

+  params->use_bitmaps = true;
   params->hinting = FontRenderParams::HINTING_SLIGHT;
   params->subpixel_rendering = FontRenderParams::SUBPIXEL_RENDERING_NONE;
 
   GtkSettings* gtk_settings = gtk_settings_get_default();
   CHECK(gtk_settings);
   gint gtk_antialias = 0;
   gint gtk_hinting = 0;
   gchar* gtk_hint_style = NULL;
   gchar* gtk_rgba = NULL;
   g_object_get(gtk_settings,
@@ skipping 29 matching lines @@
     else if (strcmp(gtk_rgba, "vbgr") == 0)
       params->subpixel_rendering = FontRenderParams::SUBPIXEL_RENDERING_VBGR;
   }
 
   g_free(gtk_hint_style);
   g_free(gtk_rgba);
 #else
   // For non-GTK builds (read: Aura), just use reasonable hardcoded values.
   params->antialiasing = true;
   params->autohinter = true;
+  params->use_bitmaps = true;
 
   // Fetch default subpixel rendering settings from FontConfig.
   FcPattern* pattern = FcPatternCreate();
   FcResult result;
   FcPattern* match = FcFontMatch(0, pattern, &result);
   DCHECK(match);
   int fc_rgba = FC_RGBA_RGB;
   FcPatternGetInteger(match, FC_RGBA, 0, &fc_rgba);
   FcPatternDestroy(pattern);
   FcPatternDestroy(match);
@@ skipping 31 matching lines @@
 
 const FontRenderParams& GetDefaultFontRenderParams() {
   static bool loaded_defaults = false;
   static FontRenderParams default_params;
   if (!loaded_defaults)
     LoadDefaults(&default_params);
   return default_params;
 }
 
 }  // namespace gfx