1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/widget/windows/TaskbarPreview.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,103 @@
1.4 +/* vim: se cin sw=2 ts=2 et : */
1.5 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.6 + *
1.7 + * This Source Code Form is subject to the terms of the Mozilla Public
1.8 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.9 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.10 +
1.11 +#ifndef __mozilla_widget_TaskbarPreview_h__
1.12 +#define __mozilla_widget_TaskbarPreview_h__
1.13 +
1.14 +#include <windows.h>
1.15 +#include <shobjidl.h>
1.16 +#undef LogSeverity // SetupAPI.h #defines this as DWORD
1.17 +
1.18 +#include <nsITaskbarPreview.h>
1.19 +#include <nsAutoPtr.h>
1.20 +#include <nsString.h>
1.21 +#include <nsWeakPtr.h>
1.22 +#include <nsIDocShell.h>
1.23 +#include "WindowHook.h"
1.24 +
1.25 +namespace mozilla {
1.26 +namespace widget {
1.27 +
1.28 +class TaskbarPreview : public nsITaskbarPreview
1.29 +{
1.30 +public:
1.31 + TaskbarPreview(ITaskbarList4 *aTaskbar, nsITaskbarPreviewController *aController, HWND aHWND, nsIDocShell *aShell);
1.32 + virtual ~TaskbarPreview();
1.33 +
1.34 + NS_DECL_NSITASKBARPREVIEW
1.35 +
1.36 +protected:
1.37 + // Called to update ITaskbarList4 dependent properties
1.38 + virtual nsresult UpdateTaskbarProperties();
1.39 +
1.40 + // Invoked when the preview is made visible
1.41 + virtual nsresult Enable();
1.42 + // Invoked when the preview is made invisible
1.43 + virtual nsresult Disable();
1.44 +
1.45 + // Detaches this preview from the nsWindow instance it's tied to
1.46 + virtual void DetachFromNSWindow();
1.47 +
1.48 + // Determines if the window is available and a destroy has not yet started
1.49 + bool IsWindowAvailable() const;
1.50 +
1.51 + // Marks this preview as being active
1.52 + virtual nsresult ShowActive(bool active) = 0;
1.53 + // Gets a reference to the window used to handle the preview messages
1.54 + virtual HWND& PreviewWindow() = 0;
1.55 +
1.56 + // Window procedure for the PreviewWindow (hooked for window previews)
1.57 + virtual LRESULT WndProc(UINT nMsg, WPARAM wParam, LPARAM lParam);
1.58 +
1.59 + // Returns whether or not the taskbar icon has been created for mWnd The
1.60 + // ITaskbarList4 API requires that we wait until the icon has been created
1.61 + // before we can call its methods.
1.62 + bool CanMakeTaskbarCalls();
1.63 +
1.64 + // Gets the WindowHook for the nsWindow
1.65 + WindowHook &GetWindowHook();
1.66 +
1.67 + // Enables/disables custom drawing for the given window
1.68 + static void EnableCustomDrawing(HWND aHWND, bool aEnable);
1.69 +
1.70 + // MSCOM Taskbar interface
1.71 + nsRefPtr<ITaskbarList4> mTaskbar;
1.72 + // Controller for this preview
1.73 + nsCOMPtr<nsITaskbarPreviewController> mController;
1.74 + // The HWND to the nsWindow that this object previews
1.75 + HWND mWnd;
1.76 + // Whether or not this preview is visible
1.77 + bool mVisible;
1.78 +
1.79 +private:
1.80 + // Called when the tooltip should be updated
1.81 + nsresult UpdateTooltip();
1.82 +
1.83 + // Requests the controller to draw into a canvas of the given width and
1.84 + // height. The resulting bitmap is sent to the DWM to display.
1.85 + void DrawBitmap(uint32_t width, uint32_t height, bool isPreview);
1.86 +
1.87 + // WindowHook procedure for hooking mWnd
1.88 + static bool MainWindowHook(void *aContext,
1.89 + HWND hWnd, UINT nMsg,
1.90 + WPARAM wParam, LPARAM lParam,
1.91 + LRESULT *aResult);
1.92 +
1.93 + // Docshell corresponding to the <window> the nsWindow contains
1.94 + nsWeakPtr mDocShell;
1.95 + nsString mTooltip;
1.96 +
1.97 + // The preview currently marked as active in the taskbar. nullptr if no
1.98 + // preview is active (some other window is).
1.99 + static TaskbarPreview *sActivePreview;
1.100 +};
1.101 +
1.102 +} // namespace widget
1.103 +} // namespace mozilla
1.104 +
1.105 +#endif /* __mozilla_widget_TaskbarPreview_h__ */
1.106 +
