7f1583c921
Chrome uses Windows native framework to show the notification of the ongoing presenting. This notification window is enumerated as a separated window which is on top most. If this window blocks the target window, Chrome can't do the cropping and has to switch to GDI methods. If GDI methods can't capture the target window, then capturing will fail until the notification is dismissed. It's hard to identify the notification window in EnumWindows() callback. So far it works if we ignore window with no title and class name prefixed with "Chrome_WidgetWin_" and with certain extended styles, as so does in this CL. Bug: chromium:847664 Change-Id: Iafabcb1f685adb91bf092475642151e1475cdf61 Reviewed-on: https://webrtc-review.googlesource.com/79742 Reviewed-by: Jamie Walch <jamiewalch@chromium.org> Commit-Queue: Brave Yao <braveyao@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23474}
84 lines
3.3 KiB
C++
84 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 IsWindowChromeNotification(HWND hwnd);
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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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