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/*
* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "modules/desktop_capture/window_finder.h"
#include <stdint.h>
#include <memory>
#include "api/scoped_refptr.h"
#include "modules/desktop_capture/desktop_geometry.h"
#include "modules/desktop_capture/screen_drawer.h"
#include "rtc_base/logging.h"
#include "test/gtest.h"
#if defined(WEBRTC_USE_X11)
#include "modules/desktop_capture/linux/x11/shared_x_display.h"
#include "modules/desktop_capture/linux/x11/x_atom_cache.h"
#endif
#if defined(WEBRTC_WIN)
#include <windows.h>
#include "modules/desktop_capture/win/window_capture_utils.h"
#include "modules/desktop_capture/window_finder_win.h"
#endif
namespace webrtc {
namespace {
#if defined(WEBRTC_WIN)
// ScreenDrawerWin does not have a message loop, so it's unresponsive to user
// inputs. WindowFinderWin cannot detect this kind of unresponsive windows.
// Instead, console window is used to test WindowFinderWin.
TEST(WindowFinderTest, FindConsoleWindow) {
// Creates a ScreenDrawer to avoid this test from conflicting with
// ScreenCapturerIntegrationTest: both tests require its window to be in
// foreground.
//
// In ScreenCapturer related tests, this is controlled by
// ScreenDrawer, which has a global lock to ensure only one ScreenDrawer
// window is active. So even we do not use ScreenDrawer for Windows test,
// creating an instance can block ScreenCapturer related tests until this test
// finishes.
//
// Usually the test framework should take care of this "isolated test"
// requirement, but unfortunately WebRTC trybots do not support this.
std::unique_ptr<ScreenDrawer> drawer = ScreenDrawer::Create();
const int kMaxSize = 10000;
// Enlarges current console window.
system("mode 1000,1000");
const HWND console_window = GetConsoleWindow();
// Ensures that current console window is visible.
ShowWindow(console_window, SW_MAXIMIZE);
// Moves the window to the top-left of the display.
MoveWindow(console_window, 0, 0, kMaxSize, kMaxSize, true);
bool should_restore_notopmost =
(GetWindowLong(console_window, GWL_EXSTYLE) & WS_EX_TOPMOST) == 0;
// Brings console window to top.
SetWindowPos(console_window, HWND_TOPMOST, 0, 0, 0, 0,
SWP_NOMOVE | SWP_NOSIZE);
BringWindowToTop(console_window);
bool success = false;
WindowFinderWin finder;
for (int i = 0; i < kMaxSize; i++) {
const DesktopVector spot(i, i);
const HWND id = reinterpret_cast<HWND>(finder.GetWindowUnderPoint(spot));
if (id == console_window) {
success = true;
break;
}
}
if (should_restore_notopmost)
SetWindowPos(console_window, HWND_NOTOPMOST, 0, 0, 0, 0,
SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE);
if (!success)
FAIL();
}
#else
TEST(WindowFinderTest, FindDrawerWindow) {
WindowFinder::Options options;
#if defined(WEBRTC_USE_X11)
std::unique_ptr<XAtomCache> cache;
const auto shared_x_display = SharedXDisplay::CreateDefault();
if (shared_x_display) {
cache = std::make_unique<XAtomCache>(shared_x_display->display());
options.cache = cache.get();
}
#endif
std::unique_ptr<WindowFinder> finder = WindowFinder::Create(options);
if (!finder) {
RTC_LOG(LS_WARNING)
<< "No WindowFinder implementation for current platform.";
return;
}
std::unique_ptr<ScreenDrawer> drawer = ScreenDrawer::Create();
if (!drawer) {
RTC_LOG(LS_WARNING)
<< "No ScreenDrawer implementation for current platform.";
return;
}
if (drawer->window_id() == kNullWindowId) {
// TODO(zijiehe): WindowFinderTest can use a dedicated window without
// relying on ScreenDrawer.
RTC_LOG(LS_WARNING)
<< "ScreenDrawer implementation for current platform does "
"create a window.";
return;
}
// ScreenDrawer may not be able to bring the window to the top. So we test
// several spots, at least one of them should succeed.
const DesktopRect region = drawer->DrawableRegion();
if (region.is_empty()) {
RTC_LOG(LS_WARNING)
<< "ScreenDrawer::DrawableRegion() is too small for the "
"WindowFinderTest.";
return;
}
for (int i = 0; i < region.width(); i++) {
const DesktopVector spot(
region.left() + i, region.top() + i * region.height() / region.width());
const WindowId id = finder->GetWindowUnderPoint(spot);
if (id == drawer->window_id()) {
return;
}
}
FAIL();
}
#endif
TEST(WindowFinderTest, ShouldReturnNullWindowIfSpotIsOutOfScreen) {
WindowFinder::Options options;
#if defined(WEBRTC_USE_X11)
std::unique_ptr<XAtomCache> cache;
const auto shared_x_display = SharedXDisplay::CreateDefault();
if (shared_x_display) {
cache = std::make_unique<XAtomCache>(shared_x_display->display());
options.cache = cache.get();
}
#endif
std::unique_ptr<WindowFinder> finder = WindowFinder::Create(options);
if (!finder) {
RTC_LOG(LS_WARNING)
<< "No WindowFinder implementation for current platform.";
return;
}
ASSERT_EQ(kNullWindowId,
finder->GetWindowUnderPoint(DesktopVector(INT16_MAX, INT16_MAX)));
ASSERT_EQ(kNullWindowId,
finder->GetWindowUnderPoint(DesktopVector(INT16_MAX, INT16_MIN)));
ASSERT_EQ(kNullWindowId,
finder->GetWindowUnderPoint(DesktopVector(INT16_MIN, INT16_MAX)));
ASSERT_EQ(kNullWindowId,
finder->GetWindowUnderPoint(DesktopVector(INT16_MIN, INT16_MIN)));
}
} // namespace
} // namespace webrtc
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