8944f6a3f5
Since Windows 10, Windows starts to support virtual desktops. The problem is when one virtual desktop is not the current one, we can still enumerate the windows on it, which are still marked as visible by OS. This causes troubles to decide if a window is on top to be cropped out. This cl is to utilize a COM API, IsWindowOnCurrentVirtualDesktop of VirtualDesktopManager, to make sure only the windows on current desktop will be enumerated. Bug: chromium:796112 Change-Id: I6e0546e90fbdb37365a8d98694ded0e30791628e Reviewed-on: https://webrtc-review.googlesource.com/65882 Reviewed-by: Jamie Walch <jamiewalch@chromium.org> Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org> Commit-Queue: Brave Yao <braveyao@webrtc.org> Cr-Commit-Position: refs/heads/master@{#22842}
83 lines
3.3 KiB
C++
83 lines
3.3 KiB
C++
/*
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* Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <shlobj.h>
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#include <windows.h>
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#include <wrl/client.h>
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#include "modules/desktop_capture/desktop_geometry.h"
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#include "rtc_base/constructormagic.h"
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namespace webrtc {
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// Outputs the window rect. The returned DesktopRect is in system coordinates,
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// i.e. the primary monitor on the system always starts from (0, 0). This
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// function returns false if native APIs fail.
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bool GetWindowRect(HWND window, DesktopRect* result);
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// Outputs the window rect, with the left/right/bottom frame border cropped if
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// the window is maximized. |cropped_rect| is the cropped rect relative to the
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// desktop. |original_rect| is the original rect returned from GetWindowRect.
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// Returns true if all API calls succeeded. The returned DesktopRect is in
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// system coordinates, i.e. the primary monitor on the system always starts from
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// (0, 0). |original_rect| can be nullptr.
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//
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// TODO(zijiehe): Move this function to CroppingWindowCapturerWin after it has
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// been removed from MouseCursorMonitorWin.
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// This function should only be used by CroppingWindowCapturerWin. Instead a
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// DesktopRect CropWindowRect(const DesktopRect& rect)
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// should be added as a utility function to help CroppingWindowCapturerWin and
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// WindowCapturerWin to crop out the borders or shadow according to their
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// scenarios. But this function is too generic and easy to be misused.
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bool GetCroppedWindowRect(HWND window,
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DesktopRect* cropped_rect,
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DesktopRect* original_rect);
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// Retrieves the rectangle of the content area of |window|. Usually it contains
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// title bar and window client area, but borders or shadow are excluded. The
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// returned DesktopRect is in system coordinates, i.e. the primary monitor on
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// the system always starts from (0, 0). This function returns false if native
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// APIs fail.
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bool GetWindowContentRect(HWND window, DesktopRect* result);
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// Returns the region type of the |window| and fill |rect| with the region of
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// |window| if region type is SIMPLEREGION.
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int GetWindowRegionTypeWithBoundary(HWND window, DesktopRect* result);
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// Retrieves the size of the |hdc|. This function returns false if native APIs
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// fail.
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bool GetDcSize(HDC hdc, DesktopSize* size);
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// Retrieves whether the |window| is maximized and stores in |result|. This
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// function returns false if native APIs fail.
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bool IsWindowMaximized(HWND window, bool* result);
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typedef HRESULT (WINAPI *DwmIsCompositionEnabledFunc)(BOOL* enabled);
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class WindowCaptureHelperWin {
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public:
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WindowCaptureHelperWin();
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~WindowCaptureHelperWin();
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bool IsAeroEnabled();
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bool IsWindowOnCurrentDesktop(HWND hwnd);
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bool IsWindowVisibleOnCurrentDesktop(HWND hwnd);
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private:
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HMODULE dwmapi_library_;
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DwmIsCompositionEnabledFunc func_;
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// Only used on Win10+.
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Microsoft::WRL::ComPtr<IVirtualDesktopManager> virtual_desktop_manager_;
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RTC_DISALLOW_COPY_AND_ASSIGN(WindowCaptureHelperWin);
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};
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} // namespace webrtc
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