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, 8 insertions, 2 deletions

diff --git a/chrome/browser/browser_window.h b/chrome/browser/browser_window.h
index 1b382ae..2809d2e 100644
--- a/chrome/browser/browser_window.h
+++ b/chrome/browser/browser_window.h
@@ -83,7 +83,7 @@ class BrowserWindow {
 
   // TODO(beng): REMOVE?
   // Returns true if the frame is maximized (aka zoomed).
-  virtual bool IsMaximized() = 0;
+  virtual bool IsMaximized() const = 0;
 
   // Returns the location bar.
   virtual LocationBar* GetLocationBar() const = 0;
@@ -102,6 +102,12 @@ class BrowserWindow {
   // Returns whether the bookmark bar is visible or not.
   virtual bool IsBookmarkBarVisible() const = 0;
 
+  // Returns the rect where the resize corner should be drawn by the render
+  // widget host view (on top of what the renderer returns). We return an empty
+  // rect to identify that there shouldn't be a resize corner (in the cases
+  // where we take care of it ourselves at the browser level).
+  virtual gfx::Rect GetRootWindowResizerRect() const = 0;
+
   // Shows or hides the bookmark bar depending on its current visibility.
   virtual void ToggleBookmarkBar() = 0;
 
@@ -126,7 +132,7 @@ class BrowserWindow {
 
   // Shows the Import Bookmarks & Settings dialog box.
   virtual void ShowImportDialog() = 0;
-  
+
   // Shows the Search Engines dialog box.
   virtual void ShowSearchEnginesDialog() = 0;