Add a new resizer corner.

To display a resize bitmap and handle the mouse interactions as requested in
http://code.google.com/p/chromium/issues/detail?id=458.
BUG=458

There are unfortunately two cases to handle and they must be handled separately.
The first one is when there are no bottom shelf like the download bar,
and the case where there is one.

For the case without, we must draw on top of what we receive from WebKit,
so we intercept the bitmap in RenderWidgetHostViewWin::OnPaint() so that we
can draw the resize corner bitmap on top of it (taking into account whether
we are in a right to left language or not).

For the case where we have a bottom shelf, we use a dedicated view that we
properly layout on top of the bottom shelf view (which takes care of handling
the RTL language case for us).

Same split for the mouse interactions. Without the bottom shelf, we must deal
with it in RenderWidgetHostViewWin::OnMouseEvent() by sending the root window
a WM_NCLBUTTONDOWN message with either HTBOTTOMRIGHT or HTBOTTOMLEFT (based on
the RTL setting) and let the OS take care of the resizing. IF we have a bottom
shelf, we must deal with the mouse interaction in
BrowserView::NonClientHitTest()
to either return HTBOTTOMRIGHT or HTBOTTOMLEFT (again, based on the RTL setting)
and, again, let the OS take care of the resizing.

More details here:
http://code.google.com/p/chromium/wiki/BrowserViewResizer


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@9408 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 3 insertions, 2 deletions

diff --git a/chrome/browser/browser.h b/chrome/browser/browser.h
index 1874426..0fc72a0 100644
--- a/chrome/browser/browser.h
+++ b/chrome/browser/browser.h
@@ -391,8 +391,9 @@ class Browser : public TabStripModelDelegate,
   virtual void ContentsStateChanged(TabContents* source);
   virtual bool ShouldDisplayURLField();
   virtual void BeforeUnloadFired(TabContents* source,
-                                 bool proceed, 
+                                 bool proceed,
                                  bool* proceed_to_fire_unload);
+  virtual gfx::Rect GetRootWindowResizerRect() const;
   virtual void ShowHtmlDialog(HtmlDialogContentsDelegate* delegate,
                               void* parent_window);
   virtual void SetFocusToLocationBar();
@@ -490,7 +491,7 @@ class Browser : public TabStripModelDelegate,
   bool RemoveFromSet(UnloadListenerSet* set, TabContents* tab);
 
   // Cleans up state appropriately when we are trying to close the browser and
-  // the tab has finished firing it's unload handler. We also use this in the 
+  // the tab has finished firing it's unload handler. We also use this in the
   // cases where a tab crashes or hangs even if the beforeunload/unload haven't
   // successfully fired.
   void ClearUnloadState(TabContents* tab);