// 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/gtk_chrome_button.h"

#include "base/basictypes.h"
#include "chrome/browser/gtk/nine_box.h"

#include "grit/theme_resources.h"

namespace {

// The theme graphics for when the mouse is over the button.
NineBox* g_nine_box_prelight;
// The theme graphics for when the button is clicked.
NineBox* g_nine_box_active;

}  // namespace

G_BEGIN_DECLS

G_DEFINE_TYPE (GtkChromeButton, gtk_chrome_button, GTK_TYPE_BUTTON)
static gboolean gtk_chrome_button_expose(GtkWidget* widget,
                                         GdkEventExpose* event);

static void gtk_chrome_button_class_init(GtkChromeButtonClass *button_class) {
  GtkWidgetClass* widget_class = (GtkWidgetClass*)button_class;
  widget_class->expose_event = gtk_chrome_button_expose;

  g_nine_box_prelight = new NineBox(
      IDR_TEXTBUTTON_TOP_LEFT_H,
      IDR_TEXTBUTTON_TOP_H,
      IDR_TEXTBUTTON_TOP_RIGHT_H,
      IDR_TEXTBUTTON_LEFT_H,
      IDR_TEXTBUTTON_CENTER_H,
      IDR_TEXTBUTTON_RIGHT_H,
      IDR_TEXTBUTTON_BOTTOM_LEFT_H,
      IDR_TEXTBUTTON_BOTTOM_H,
      IDR_TEXTBUTTON_BOTTOM_RIGHT_H);

  g_nine_box_active = new NineBox(
      IDR_TEXTBUTTON_TOP_LEFT_P,
      IDR_TEXTBUTTON_TOP_P,
      IDR_TEXTBUTTON_TOP_RIGHT_P,
      IDR_TEXTBUTTON_LEFT_P,
      IDR_TEXTBUTTON_CENTER_P,
      IDR_TEXTBUTTON_RIGHT_P,
      IDR_TEXTBUTTON_BOTTOM_LEFT_P,
      IDR_TEXTBUTTON_BOTTOM_P,
      IDR_TEXTBUTTON_BOTTOM_RIGHT_P);
}

static void gtk_chrome_button_init(GtkChromeButton* button) {
  gtk_widget_set_app_paintable(GTK_WIDGET(button), TRUE);
}

static gboolean gtk_chrome_button_expose(GtkWidget* widget,
                                         GdkEventExpose* event) {
  NineBox* nine_box = NULL;
  if (GTK_WIDGET_STATE(widget) == GTK_STATE_PRELIGHT)
    nine_box = g_nine_box_prelight;
  else if (GTK_WIDGET_STATE(widget) == GTK_STATE_ACTIVE)
    nine_box = g_nine_box_active;

  // Only draw theme graphics if we have some.
  if (nine_box)
    nine_box->RenderToWidget(widget);

  gtk_container_propagate_expose(GTK_CONTAINER(widget),
                                 gtk_bin_get_child(GTK_BIN(widget)),
                                 event);

  return TRUE;  // Don't propagate, we are the default handler.
}

GtkWidget* gtk_chrome_button_new(void) {
  return GTK_WIDGET(g_object_new(GTK_TYPE_CHROME_BUTTON, NULL));
}

G_END_DECLS