Make bottom corners of panels not rounded on GTK.

chrome/browser/ui/panels/panel_browser_window_gtk.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 "chrome/browser/ui/panels/panel_browser_window_gtk.h"
 
 #include "base/bind.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/gtk/browser_titlebar.h"
 #include "chrome/browser/ui/gtk/custom_button.h"
+#include "chrome/browser/ui/gtk/nine_box.h"
 #include "chrome/browser/ui/gtk/theme_service_gtk.h"
 #include "chrome/browser/ui/panels/panel.h"
 #include "chrome/browser/ui/panels/panel_bounds_animation.h"
 #include "chrome/browser/ui/panels/panel_browser_titlebar_gtk.h"
 #include "chrome/browser/ui/panels/panel_drag_gtk.h"
 #include "chrome/browser/ui/panels/panel_manager.h"
 #include "chrome/browser/ui/panels/panel_strip.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "content/public/browser/notification_service.h"
 #include "grit/theme_resources_standard.h"
+#include "grit/ui_resources.h"
 #include "third_party/skia/include/core/SkShader.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/image/cairo_cached_surface.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/skia_util.h"
 
 using content::WebContents;
 
 namespace {
 
@@ skipping 115 matching lines @@
       return FALSE;
     if (*edge == GDK_WINDOW_EDGE_SOUTH_WEST)
       *edge = GDK_WINDOW_EDGE_WEST;
     else if (*edge == GDK_WINDOW_EDGE_SOUTH_EAST)
       *edge = GDK_WINDOW_EDGE_EAST;
   }
 
   return TRUE;
 }
 
+GdkRegion* PanelBrowserWindowGtk::GetWindowShape(int width, int height) const {
+  // For panels, only top corners are rounded. The bottom corners are not
+  // rounded because panels are aligned to the bottom edge of the screen.
+  GdkRectangle top_top_rect = { 3, 0, width - 6, 1 };
+  GdkRectangle top_mid_rect = { 1, 1, width - 2, 2 };
+  GdkRectangle mid_rect = { 0, 3, width, height - 3 };
+  GdkRegion* mask = gdk_region_rectangle(&top_top_rect);
+  gdk_region_union_with_rect(mask, &top_mid_rect);
+  gdk_region_union_with_rect(mask, &mid_rect);
+  return mask;
+}
+
+void PanelBrowserWindowGtk::DrawCustomFrameBorder(GtkWidget* widget) {
+  static NineBox* custom_frame_border = NULL;
+  if (!custom_frame_border) {
+    custom_frame_border = new NineBox(IDR_WINDOW_TOP_LEFT_CORNER,
+                                      IDR_WINDOW_TOP_CENTER,
+                                      IDR_WINDOW_TOP_RIGHT_CORNER,
+                                      IDR_WINDOW_LEFT_SIDE,
+                                      0,
+                                      IDR_WINDOW_RIGHT_SIDE,
+                                      IDR_PANEL_BOTTOM_LEFT_CORNER,
+                                      IDR_WINDOW_BOTTOM_CENTER,
+                                      IDR_PANEL_BOTTOM_RIGHT_CORNER);
+  }
+  custom_frame_border->RenderToWidget(widget);
+}
+
 void PanelBrowserWindowGtk::EnsureDragHelperCreated() {
   if (drag_helper_.get())
     return;
 
   drag_helper_.reset(new PanelDragGtk(panel_.get()));
   gtk_box_pack_end(GTK_BOX(window_vbox_), drag_helper_->widget(),
                    FALSE, FALSE, 0);
 }
 
 bool PanelBrowserWindowGtk::HandleTitleBarLeftMousePress(
@@ skipping 514 matching lines @@
       break;
     case RESTORE_BUTTON:
       button = titlebar->unminimize_button();
       break;
     default:
       NOTREACHED();
       return false;
   }
   return gtk_widget_get_visible(button->widget());
 }