зеркало из https://github.com/mozilla/pjs.git
136 строки
4.8 KiB
C++
136 строки
4.8 KiB
C++
/* vim: se cin sw=2 ts=2 et : */
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2009
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Rob Arnold <tellrob@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef __mozilla_widget_TaskbarPreview_h__
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#define __mozilla_widget_TaskbarPreview_h__
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#include <windows.h>
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#include <shobjidl.h>
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#include <nsITaskbarPreview.h>
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#include <nsAutoPtr.h>
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#include <nsString.h>
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#include <nsWeakPtr.h>
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#include <nsIDocShell.h>
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#include "WindowHook.h"
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namespace mozilla {
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namespace widget {
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class TaskbarPreview : public nsITaskbarPreview
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{
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public:
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TaskbarPreview(ITaskbarList4 *aTaskbar, nsITaskbarPreviewController *aController, HWND aHWND, nsIDocShell *aShell);
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virtual ~TaskbarPreview();
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NS_DECL_NSITASKBARPREVIEW
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protected:
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// Called to update ITaskbarList4 dependent properties
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virtual nsresult UpdateTaskbarProperties();
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// Invoked when the preview is made visible
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virtual nsresult Enable();
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// Invoked when the preview is made invisible
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virtual nsresult Disable();
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// Detaches this preview from the nsWindow instance it's tied to
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virtual void DetachFromNSWindow();
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// Determines if the window is available and a destroy has not yet started
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bool IsWindowAvailable() const;
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// Marks this preview as being active
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virtual nsresult ShowActive(bool active) = 0;
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// Gets a reference to the window used to handle the preview messages
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virtual HWND& PreviewWindow() = 0;
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// Window procedure for the PreviewWindow (hooked for window previews)
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virtual LRESULT WndProc(UINT nMsg, WPARAM wParam, LPARAM lParam);
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// Returns whether or not the taskbar icon has been created for mWnd The
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// ITaskbarList4 API requires that we wait until the icon has been created
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// before we can call its methods.
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bool CanMakeTaskbarCalls();
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// Gets the WindowHook for the nsWindow
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WindowHook &GetWindowHook();
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// Enables/disables custom drawing for the given window
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static void EnableCustomDrawing(HWND aHWND, bool aEnable);
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// MSCOM Taskbar interface
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nsRefPtr<ITaskbarList4> mTaskbar;
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// Controller for this preview
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nsCOMPtr<nsITaskbarPreviewController> mController;
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// The HWND to the nsWindow that this object previews
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HWND mWnd;
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// Whether or not this preview is visible
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bool mVisible;
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private:
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// Called when the tooltip should be updated
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nsresult UpdateTooltip();
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// Requests the controller to draw into a canvas of the given width and
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// height. The resulting bitmap is sent to the DWM to display.
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void DrawBitmap(PRUint32 width, PRUint32 height, bool isPreview);
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// WindowHook procedure for hooking mWnd
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static bool MainWindowHook(void *aContext,
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HWND hWnd, UINT nMsg,
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WPARAM wParam, LPARAM lParam,
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LRESULT *aResult);
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// Docshell corresponding to the <window> the nsWindow contains
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nsWeakPtr mDocShell;
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nsString mTooltip;
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// The preview currently marked as active in the taskbar. nsnull if no
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// preview is active (some other window is).
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static TaskbarPreview *sActivePreview;
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};
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} // namespace widget
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} // namespace mozilla
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#endif /* __mozilla_widget_TaskbarPreview_h__ */
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