Gtk: Implement font selection options.

chrome/browser/gtk/options/fonts_page_gtk.cc

+// Copyright (c) 2009 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 "chrome/browser/gtk/options/fonts_page_gtk.h"
+
+#include "app/l10n_util.h"
+#include "chrome/browser/gtk/options/options_layout_gtk.h"
+#include "chrome/common/gtk_util.h"
+#include "chrome/common/pref_names.h"
+#include "grit/generated_resources.h"
+
+namespace {
+
+// Make a Gtk font name string from a font family name and pixel size.
+std::string MakeFontName(std::wstring family_name, int pixel_size) {
+  std::string fontname;
+  // TODO(mattm): We can pass in the size in pixels (px), and the font button
+  // actually honors it, but when you open the selector it interprets it as
+  // points.  See crbug.com/17857
+  SStringPrintf(&fontname, "%s %dpx", WideToUTF8(family_name).c_str(),
+                pixel_size);
+  return fontname;
+}
+
+}  // namespace
+
+FontsPageGtk::FontsPageGtk(Profile* profile) : OptionsPageBase(profile) {
+  Init();
+}
+
+FontsPageGtk::~FontsPageGtk() {
+}
+
+void FontsPageGtk::Init() {
+  OptionsLayoutBuilderGtk options_builder;
+
+  serif_font_button_ = gtk_font_button_new();
+  gtk_font_button_set_use_font(GTK_FONT_BUTTON(serif_font_button_), TRUE);
+  gtk_font_button_set_use_size(GTK_FONT_BUTTON(serif_font_button_), TRUE);
+  g_signal_connect(serif_font_button_, "font-set", G_CALLBACK(OnSerifFontSet),
+                   this);
+
+  sans_font_button_ = gtk_font_button_new();
+  gtk_font_button_set_use_font(GTK_FONT_BUTTON(sans_font_button_), TRUE);
+  gtk_font_button_set_use_size(GTK_FONT_BUTTON(sans_font_button_), TRUE);
+  g_signal_connect(sans_font_button_, "font-set", G_CALLBACK(OnSansFontSet),
+                   this);
+
+  fixed_font_button_ = gtk_font_button_new();
+  gtk_font_button_set_use_font(GTK_FONT_BUTTON(fixed_font_button_), TRUE);
+  gtk_font_button_set_use_size(GTK_FONT_BUTTON(fixed_font_button_), TRUE);
+  g_signal_connect(fixed_font_button_, "font-set", G_CALLBACK(OnFixedFontSet),
+                   this);
+
+  GtkWidget* font_controls = gtk_util::CreateLabeledControlsGroup(NULL,
+      l10n_util::GetStringUTF8(
+          IDS_FONT_LANGUAGE_SETTING_FONT_SELECTOR_SERIF_LABEL).c_str(),
+      serif_font_button_,
+      l10n_util::GetStringUTF8(
+        IDS_FONT_LANGUAGE_SETTING_FONT_SELECTOR_SANS_SERIF_LABEL).c_str(),
+      sans_font_button_,
+      l10n_util::GetStringUTF8(
+        IDS_FONT_LANGUAGE_SETTING_FONT_SELECTOR_FIXED_WIDTH_LABEL).c_str(),
+      fixed_font_button_,
+      NULL);
+
+  options_builder.AddOptionGroup(l10n_util::GetStringUTF8(
+        IDS_FONT_LANGUAGE_SETTING_FONT_SUB_DIALOG_FONT_TITLE),
+      font_controls, false);
+
+  // TODO(mattm): default encoding
+  options_builder.AddOptionGroup(l10n_util::GetStringUTF8(
+        IDS_FONT_LANGUAGE_SETTING_FONT_SUB_DIALOG_ENCODING_TITLE),
+      gtk_label_new("todo"), false);
+
+  page_ = options_builder.get_page_widget();
+
+  serif_name_.Init(prefs::kWebKitSerifFontFamily, profile()->GetPrefs(), this);
+  sans_serif_name_.Init(prefs::kWebKitSansSerifFontFamily,
+                        profile()->GetPrefs(), this);
+  variable_width_size_.Init(prefs::kWebKitDefaultFontSize,
+                            profile()->GetPrefs(), this);
+
+  fixed_width_name_.Init(prefs::kWebKitFixedFontFamily, profile()->GetPrefs(),
+                         this);
+  fixed_width_size_.Init(prefs::kWebKitDefaultFixedFontSize,
+                         profile()->GetPrefs(), this);
+
+  default_encoding_.Init(prefs::kDefaultCharset, profile()->GetPrefs(), this);
+
+  NotifyPrefChanged(NULL);
+}
+
+void FontsPageGtk::NotifyPrefChanged(const std::wstring* pref_name) {
+  if (!pref_name || *pref_name == prefs::kWebKitSerifFontFamily ||
+      *pref_name == prefs::kWebKitDefaultFontSize) {
+    gtk_font_button_set_font_name(GTK_FONT_BUTTON(serif_font_button_),
+        MakeFontName(serif_name_.GetValue(),
+          variable_width_size_.GetValue()).c_str());
+  }
+  if (!pref_name || *pref_name == prefs::kWebKitSansSerifFontFamily ||
+      *pref_name == prefs::kWebKitDefaultFontSize) {
+    gtk_font_button_set_font_name(GTK_FONT_BUTTON(sans_font_button_),
+        MakeFontName(sans_serif_name_.GetValue(),
+          variable_width_size_.GetValue()).c_str());
+  }
+  if (!pref_name || *pref_name == prefs::kWebKitFixedFontFamily ||
+      *pref_name == prefs::kWebKitDefaultFixedFontSize) {
+    gtk_font_button_set_font_name(GTK_FONT_BUTTON(fixed_font_button_),
+        MakeFontName(fixed_width_name_.GetValue(),
+          fixed_width_size_.GetValue()).c_str());
+  }
+  if (!pref_name || *pref_name == prefs::kDefaultCharset) {
+    // TODO
+  }
+}
+
+void FontsPageGtk::SetFontsFromButton(StringPrefMember* name_pref,
+                        IntegerPrefMember* size_pref,
+                        GtkFontButton* font_button) {
+  PangoFontDescription* desc = pango_font_description_from_string(
+      gtk_font_button_get_font_name(font_button));
+  int size = pango_font_description_get_size(desc);
+  name_pref->SetValue(UTF8ToWide(pango_font_description_get_family(desc)));
+  size_pref->SetValue(size / PANGO_SCALE);
+  pango_font_description_free(desc);
+  // Reset the button font in px, since the chooser will have set it in points.
+  // Also, both sans and serif share the same size so we need to update them
+  // both.
+  NotifyPrefChanged(NULL);
+}
+
+
+// static
+void FontsPageGtk::OnSerifFontSet(GtkFontButton* font_button,
+                                  FontsPageGtk* fonts_page) {
+  fonts_page->SetFontsFromButton(&fonts_page->serif_name_,
+                                 &fonts_page->variable_width_size_,
+                                 font_button);
+}
+
+// static
+void FontsPageGtk::OnSansFontSet(GtkFontButton* font_button,
+                                 FontsPageGtk* fonts_page) {
+  fonts_page->SetFontsFromButton(&fonts_page->sans_serif_name_,
+                                 &fonts_page->variable_width_size_,
+                                 font_button);
+}
+
+// static
+void FontsPageGtk::OnFixedFontSet(GtkFontButton* font_button,
+                                  FontsPageGtk* fonts_page) {
+  fonts_page->SetFontsFromButton(&fonts_page->fixed_width_name_,
+                                 &fonts_page->fixed_width_size_,
+                                 font_button);
+}