Hook up the resize rect for Mac and enable its use in the renderer (mac-only).

Review URL: http://codereview.chromium.org/21512

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@10019 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 50 insertions, 0 deletions

diff --git a/chrome/browser/cocoa/tab_contents_controller.h b/chrome/browser/cocoa/tab_contents_controller.h
index 4d205bb..20d9a38 100644
--- a/chrome/browser/cocoa/tab_contents_controller.h
+++ b/chrome/browser/cocoa/tab_contents_controller.h
@@ -68,6 +68,11 @@ class TabStripModel;
 // Sets whether or not the current page in the frontmost tab is bookmarked.
 - (void)setStarredState:(BOOL)isStarred;
 
+// Return the rect, in WebKit coordinates (flipped), of the window's grow box
+// in the coordinate system of the content area of this tab.
+// |windowGrowBox| needs to be in the window's coordinate system.
+- (NSRect)growBoxFromWindowGrowBox:(NSRect)windowGrowBox;
+
 @end
 
 #endif  // CHROME_BROWSER_COCOA_TAB_COTNENTS_CONTROLLER_H_
diff --git a/chrome/browser/cocoa/tab_contents_controller.mm b/chrome/browser/cocoa/tab_contents_controller.mm
index 4b8eb8b..5d62716 100644
--- a/chrome/browser/cocoa/tab_contents_controller.mm
+++ b/chrome/browser/cocoa/tab_contents_controller.mm
@@ -202,6 +202,28 @@ class LocationBarBridge : public LocationBar {
   [starButton_ setImage:[NSImage imageNamed:starImageName]];
 }
 
+// Return the rect, in WebKit coordinates (flipped), of the window's grow box
+// in the coordinate system of the content area of this tab.
+// |windowGrowBox| needs to be in the window's coordinate system.
+- (NSRect)growBoxFromWindowGrowBox:(NSRect)windowGrowBox {
+  NSRect localGrowBox = NSMakeRect(0, 0, 0, 0);
+  NSView* contentView = contents_->GetNativeView();
+  if (contentView) {
+    localGrowBox = windowGrowBox;
+    // The scrollbar assumes that the resizer goes all the way down to the
+    // bottom corner, so we ignore any y offset to the rect itself and use the
+    // entire bottom corner.
+    localGrowBox.origin.y = 0;
+    // Convert to view coordinates from window coordinates.
+    localGrowBox = [contentView convertRect:localGrowBox fromView:nil];
+    // Flip the rect in view coordinates
+    localGrowBox.origin.y = 
+        [contentView frame].size.height - localGrowBox.origin.y - 
+            localGrowBox.size.height;
+  }
+  return localGrowBox;
+}
+
 @end
 
 //--------------------------------------------------------------------------
diff --git a/chrome/browser/cocoa/tab_strip_controller.h b/chrome/browser/cocoa/tab_strip_controller.h
index 2f1bcbf..6062d70 100644
--- a/chrome/browser/cocoa/tab_strip_controller.h
+++ b/chrome/browser/cocoa/tab_strip_controller.h
@@ -57,6 +57,11 @@ class TabContents;
 // Sets whether or not the current page in the frontmost tab is bookmarked.
 - (void)setStarredState:(BOOL)isStarred;
 
+// Return the rect, in WebKit coordinates (flipped), of the window's grow box
+// in the coordinate system of the content area of the currently selected tab.
+// |windowGrowBox| needs to be in the window's coordinate system.
+- (NSRect)selectedTabGrowBoxFromWindowGrowBox:(NSRect)windowGrowBox;
+
 @end
 
 #endif  // CHROME_BROWSER_COCOA_TAB_STRIP_CONTROLLER_H_
diff --git a/chrome/browser/cocoa/tab_strip_controller.mm b/chrome/browser/cocoa/tab_strip_controller.mm
index 864ab12..65ad9b0 100644
--- a/chrome/browser/cocoa/tab_strip_controller.mm
+++ b/chrome/browser/cocoa/tab_strip_controller.mm
@@ -334,6 +334,24 @@ class TabStripBridge : public TabStripModelObserver {
   [selectedController setStarredState:isStarred];
 }
 
+// Return the rect, in WebKit coordinates (flipped), of the window's grow box
+// in the coordinate system of the content area of the currently selected tab.
+// |windowGrowBox| needs to be in the window's coordinate system.
+- (NSRect)selectedTabGrowBoxFromWindowGrowBox:(NSRect)windowGrowBox {
+  TabContents* selectedContents = model_->GetSelectedTabContents();
+  if (!selectedContents) {
+    // When the window is initially being constructed, there may be no currently
+    // selected tab, so pick the first one. If there aren't any, just bail with
+    // an empty rect.
+    selectedContents = model_->GetTabContentsAt(0);
+    if (!selectedContents)
+      return NSMakeRect(0, 0, 0, 0);
+  }
+  TabContentsController* selectedController =
+      [self controllerWithContents:selectedContents];
+  return [selectedController growBoxFromWindowGrowBox:windowGrowBox];
+}
+
 @end
 
 //--------------------------------------------------------------------------