Support detaching/attaching panels via inter-strip drags.

chrome/browser/ui/panels/panel_titlebar_view_cocoa.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_PANELS_PANEL_TITLEBAR_VIEW_COCOA_H_
 #define CHROME_BROWSER_UI_PANELS_PANEL_TITLEBAR_VIEW_COCOA_H_
 
 #import <Cocoa/Cocoa.h>
 
 #import "base/mac/cocoa_protocols.h"
@@ skipping 40 matching lines @@
   IBOutlet NSView* settingsButtonWrapper_;
   IBOutlet HoverImageButton* settingsButton_;
   // Transparent view on top of entire titlebar. It catches mouse events to
   // prevent window activation by the system on mouseDown.
   IBOutlet NSView* overlay_;
   NSButton* closeButton_;  // Created explicitly, not from NIB. Weak, destroyed
                            // when view is destroyed, as a subview.
   ScopedCrTrackingArea closeButtonTrackingArea_;
   PanelDragState dragState_;
   BOOL isDrawingAttention_;
-  NSPoint dragStartLocation_;
+  NSPoint dragStartLocation_;  // in screen coordinates.
   // "Glint" animation is used in "Draw Attention" mode.
   scoped_nsobject<RepaintAnimation> glintAnimation_;
   scoped_nsobject<NSTimer> glintAnimationTimer_;
   double glintInterval_;
 }
 
   // Callback from Close button.
 - (void)onCloseButtonClick:(id)sender;
 
   // Callback from Settings button.
@@ skipping 10 matching lines @@
   // Should be called when size of the titlebar changes.
 - (void)updateCloseButtonLayout;
 - (void)updateIconAndTitleLayout;
 
 // Various events that we'll need to redraw our titlebar for.
 - (void)didChangeFrame:(NSNotification*)notification;
 - (void)didChangeTheme:(NSNotification*)notification;
 - (void)didChangeMainWindow:(NSNotification*)notification;
 
 // Helpers to control title drag operation, called from more then one place.
-- (void)startDrag;
+// |mouseLocation| is in screen coordinates.
+- (void)startDrag:(NSPoint)mouseLocation;
 - (void)endDrag:(BOOL)cancelled;
-- (void)dragWithDeltaX:(int)deltaX
-                deltaY:(int)deltaY;
+- (void)drag:(NSPoint)mouseLocation;
 
   // Update the visibility of settings button.
 - (void)updateSettingsButtonVisibility:(BOOL)mouseOverWindow;
 - (void)checkMouseAndUpdateSettingsButtonVisibility;
 
 // Draw Attention methods - change appearance of titlebar to attract user.
 - (void)drawAttention;
 - (void)stopDrawingAttention;
 - (BOOL)isDrawingAttention;
 - (void)startGlintAnimation;
 - (void)restartGlintAnimation:(NSTimer*)timer;
 - (void)stopGlintAnimation;
 
 // Returns width of titlebar when shown in "icon only" mode.
 - (int)iconOnlyWidthInScreenCoordinates;
 
 @end  // @interface PanelTitlebarView
 
 // Methods which are either only for testing, or only public for testing.
 @interface PanelTitlebarViewCocoa(TestingAPI)
 
 - (PanelWindowControllerCocoa*)controller;
 
 - (NSTextField*)title;
 
 // Simulates click on a close button. Used to test panel closing.
 - (void)simulateCloseButtonClick;
 
 // NativePanelTesting support.
-- (void)pressLeftMouseButtonTitlebar;
+- (void)pressLeftMouseButtonTitlebar:(NSPoint)mouseLocation;
 - (void)releaseLeftMouseButtonTitlebar;
-- (void)dragTitlebarDeltaX:(double)delta_x
-                    deltaY:(double)delta_y;
+- (void)dragTitlebar:(NSPoint)mouseLocation;
 - (void)cancelDragTitlebar;
 - (void)finishDragTitlebar;
 
 @end  // @interface PanelTitlebarViewCocoa(TestingAPI)
 
 #endif  // CHROME_BROWSER_UI_PANELS_PANEL_TITLEBAR_VIEW_COCOA_H_