First part of tab overview. It isn't wired up, nor is it complete, but

it's a good enough stage that I want to check it in.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/119329

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@17906 0039d316-1c4b-4281-b951-d872f2087c98

5 files changed, 22 insertions, 0 deletions

diff --git a/views/widget/widget.h b/views/widget/widget.h
index 14a61a0..1dabf08 100644
--- a/views/widget/widget.h
+++ b/views/widget/widget.h
@@ -10,6 +10,7 @@
 class ThemeProvider;
 
 namespace gfx {
+class Path;
 class Rect;
 }
 
@@ -49,6 +50,9 @@ class Widget {
   // Sizes and/or places the widget to the specified bounds, size or position.
   virtual void SetBounds(const gfx::Rect& bounds) = 0;
 
+  // Sets a shape on the widget.
+  virtual void SetShape(const gfx::Path& shape) = 0;
+
   // Hides the widget then closes it after a return to the message loop.
   virtual void Close() = 0;
 
diff --git a/views/widget/widget_gtk.cc b/views/widget/widget_gtk.cc
index 4928d27..776af0d 100644
--- a/views/widget/widget_gtk.cc
+++ b/views/widget/widget_gtk.cc
@@ -4,6 +4,7 @@
 
 #include "views/widget/widget_gtk.h"
 
+#include "app/gfx/path.h"
 #include "base/compiler_specific.h"
 #include "views/fill_layout.h"
 #include "views/widget/default_theme_provider.h"
@@ -270,6 +271,16 @@ void WidgetGtk::SetBounds(const gfx::Rect& bounds) {
   }
 }
 
+void WidgetGtk::SetShape(const gfx::Path& shape) {
+  DCHECK(widget_);
+  DCHECK(widget_->window);
+
+  gdk_window_shape_combine_region(widget_->window, NULL, 0, 0);
+  GdkRegion* region = shape.CreateGdkRegion();
+  gdk_window_shape_combine_region(widget_->window, region, 0, 0);
+  gdk_region_destroy(region);
+}
+
 void WidgetGtk::Close() {
   if (!widget_)
     return;  // No need to do anything.
diff --git a/views/widget/widget_gtk.h b/views/widget/widget_gtk.h
index 8ac47fc..2442f74 100644
--- a/views/widget/widget_gtk.h
+++ b/views/widget/widget_gtk.h
@@ -71,6 +71,7 @@ class WidgetGtk : public Widget, public MessageLoopForUI::Observer {
   // Overridden from Widget:
   virtual void GetBounds(gfx::Rect* out, bool including_frame) const;
   virtual void SetBounds(const gfx::Rect& bounds);
+  virtual void SetShape(const gfx::Path& shape);
   virtual void Close();
   virtual void CloseNow();
   virtual void Show();
diff --git a/views/widget/widget_win.cc b/views/widget/widget_win.cc
index adce4d9..353fcbc 100644
--- a/views/widget/widget_win.cc
+++ b/views/widget/widget_win.cc
@@ -5,6 +5,7 @@
 #include "views/widget/widget_win.h"
 
 #include "app/gfx/canvas.h"
+#include "app/gfx/path.h"
 #include "app/win_util.h"
 #include "base/gfx/native_theme.h"
 #include "base/string_util.h"
@@ -258,6 +259,10 @@ void WidgetWin::SetBounds(const gfx::Rect& bounds) {
                SWP_NOACTIVATE | SWP_NOZORDER);
 }
 
+void WidgetWin::SetShape(const gfx::Path& shape) {
+  SetWindowRgn(shape.CreateHRGN(), TRUE);
+}
+
 void WidgetWin::Close() {
   if (!IsWindow())
     return;  // No need to do anything.
diff --git a/views/widget/widget_win.h b/views/widget/widget_win.h
index fa6bab6..c57de93 100644
--- a/views/widget/widget_win.h
+++ b/views/widget/widget_win.h
@@ -214,6 +214,7 @@ class WidgetWin : public Widget,
   // Overridden from Widget:
   virtual void GetBounds(gfx::Rect* out, bool including_frame) const;
   virtual void SetBounds(const gfx::Rect& bounds);
+  virtual void SetShape(const gfx::Path& shape);
   virtual void Close();
   virtual void CloseNow();
   virtual void Show();