Add button tinting to the toolbar buttons.

chrome/browser/gtk/custom_button.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/custom_button.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
+#include "app/theme_provider.h"
 #include "base/basictypes.h"
 #include "base/gfx/gtk_util.h"
-
+#include "chrome/common/notification_service.h"
 #include "grit/theme_resources.h"
 
-CustomDrawButtonBase::CustomDrawButtonBase(
-    int normal_id,
-    int active_id,
-    int highlight_id,
-    int depressed_id)
-    : paint_override_(-1) {
-  // Load the button images from the resource bundle.
-  ResourceBundle& rb = ResourceBundle::GetSharedInstance();
-  pixbufs_[GTK_STATE_NORMAL] =
-      normal_id ? rb.GetRTLEnabledPixbufNamed(normal_id) : NULL;
-  pixbufs_[GTK_STATE_ACTIVE] =
-      active_id ? rb.GetRTLEnabledPixbufNamed(active_id) : NULL;
-  pixbufs_[GTK_STATE_PRELIGHT] =
-      highlight_id ? rb.GetRTLEnabledPixbufNamed(highlight_id) : NULL;
-  pixbufs_[GTK_STATE_SELECTED] = NULL;
-  pixbufs_[GTK_STATE_INSENSITIVE] =
-      depressed_id ? rb.GetRTLEnabledPixbufNamed(depressed_id) : NULL;
+CustomDrawButtonBase::CustomDrawButtonBase(ThemeProvider* theme_provider,
+    int normal_id, int active_id, int highlight_id, int depressed_id)
+    : paint_override_(-1),
+      normal_id_(normal_id),
+      active_id_(active_id),
+      highlight_id_(highlight_id),
+      depressed_id_(depressed_id),
+      theme_provider_(theme_provider) {
+  if (theme_provider) {
+    // Load images by pretending that we got a BROWSER_THEME_CHANGED
+    // notification.
+    Observe(NotificationType::BROWSER_THEME_CHANGED,
+            NotificationService::AllSources(),
+            NotificationService::NoDetails());
+
+    registrar_.Add(this,
+                   NotificationType::BROWSER_THEME_CHANGED,
+                   NotificationService::AllSources());
+  } else {
+    // Load the button images from the resource bundle.
+    ResourceBundle& rb = ResourceBundle::GetSharedInstance();
+    pixbufs_[GTK_STATE_NORMAL] =
+        normal_id ? rb.GetRTLEnabledPixbufNamed(normal_id) : NULL;
+    pixbufs_[GTK_STATE_ACTIVE] =
+        active_id ? rb.GetRTLEnabledPixbufNamed(active_id) : NULL;
+    pixbufs_[GTK_STATE_PRELIGHT] =
+        highlight_id ? rb.GetRTLEnabledPixbufNamed(highlight_id) : NULL;
+    pixbufs_[GTK_STATE_SELECTED] = NULL;
+    pixbufs_[GTK_STATE_INSENSITIVE] =
+        depressed_id ? rb.GetRTLEnabledPixbufNamed(depressed_id) : NULL;
+  }
 }
 
 CustomDrawButtonBase::~CustomDrawButtonBase() {
 }
 
 gboolean CustomDrawButtonBase::OnExpose(GtkWidget* widget, GdkEventExpose* e) {
   GdkPixbuf* pixbuf = pixbufs_[paint_override_ >= 0 ?
                                paint_override_ : GTK_WIDGET_STATE(widget)];
 
   // Fall back to the default image if we don't have one for this state.
@@ skipping 13 matching lines @@
   int x = gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL ?
       widget_width - pixbuf_width : 0;
 
   gdk_cairo_set_source_pixbuf(cairo_context, pixbuf, x, 0);
   cairo_paint(cairo_context);
   cairo_destroy(cairo_context);
 
   return TRUE;
 }
 
-CustomDrawButton::CustomDrawButton(
-    int normal_id,
-    int active_id,
-    int highlight_id,
-    int depressed_id,
-    const char* stock_id)
-    : button_base_(normal_id, active_id, highlight_id, depressed_id),
+void CustomDrawButtonBase::Observe(NotificationType type,
+    const NotificationSource& source, const NotificationDetails& details) {
+  DCHECK(theme_provider_);
+  DCHECK(NotificationType::BROWSER_THEME_CHANGED == type);
+
+  // TODO(tc): Add GetRTLEnabledPixbufNamed to ThemeProviderGtk.
+  pixbufs_[GTK_STATE_NORMAL] =
+      normal_id_ ? theme_provider_->GetPixbufNamed(normal_id_) : NULL;
+  pixbufs_[GTK_STATE_ACTIVE] =
+      active_id_ ? theme_provider_->GetPixbufNamed(active_id_) : NULL;
+  pixbufs_[GTK_STATE_PRELIGHT] =
+      highlight_id_ ? theme_provider_->GetPixbufNamed(highlight_id_) : NULL;
+  pixbufs_[GTK_STATE_SELECTED] = NULL;
+  pixbufs_[GTK_STATE_INSENSITIVE] =
+      depressed_id_ ? theme_provider_->GetPixbufNamed(depressed_id_) : NULL;
+}
+
+CustomDrawButton::CustomDrawButton(int normal_id, int active_id,
+    int highlight_id, int depressed_id, const char* stock_id)
+    : button_base_(NULL, normal_id, active_id, highlight_id, depressed_id),
       gtk_stock_name_(stock_id),
       has_expose_signal_handler_(false) {
-  widget_.Own(gtk_button_new());
-  GTK_WIDGET_UNSET_FLAGS(widget_.get(), GTK_CAN_FOCUS);
-  SetUseSystemTheme(false);
+  Init();
+}
+
+CustomDrawButton::CustomDrawButton(ThemeProvider* theme_provider,
+    int normal_id, int active_id, int highlight_id, int depressed_id,
+    const char* stock_id)
+    : button_base_(theme_provider, normal_id, active_id, highlight_id,
+                   depressed_id),
+      gtk_stock_name_(stock_id),
+      has_expose_signal_handler_(false) {
+  Init();
 }
 
 CustomDrawButton::~CustomDrawButton() {
   widget_.Destroy();
 }
 
+void CustomDrawButton::Init() {
+  widget_.Own(gtk_button_new());
+  GTK_WIDGET_UNSET_FLAGS(widget_.get(), GTK_CAN_FOCUS);
+  SetUseSystemTheme(false);
+}
+
 void CustomDrawButton::SetUseSystemTheme(bool use_gtk) {
   if (use_gtk && gtk_stock_name_) {
     gtk_button_set_image(
         GTK_BUTTON(widget_.get()),
         gtk_image_new_from_stock(gtk_stock_name_, GTK_ICON_SIZE_BUTTON));
     gtk_widget_set_size_request(widget_.get(), -1, -1);
     gtk_widget_set_app_paintable(widget_.get(), FALSE);
     gtk_widget_set_double_buffered(widget_.get(), TRUE);
 
     if (has_expose_signal_handler_)
@@ skipping 30 matching lines @@
   return button->button_base_.OnExpose(widget, e);
 }
 
 // static
 CustomDrawButton* CustomDrawButton::CloseButton() {
   CustomDrawButton* button =
       new CustomDrawButton(IDR_CLOSE_BAR, IDR_CLOSE_BAR_P,
                            IDR_CLOSE_BAR_H, 0, NULL);
   return button;
 }