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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/display/win/local_process_window_finder_win.h"
#include "base/win/windows_version.h"
#include "ui/display/win/screen_win.h"
#include "ui/gfx/win/hwnd_util.h"
namespace display::win {
// static
gfx::NativeWindow LocalProcessWindowFinder::GetProcessWindowAtPoint(
const gfx::Point& screen_loc,
const std::set<HWND>& ignore,
ScreenWin* screen_win) {
LocalProcessWindowFinder finder(screen_loc, screen_win, ignore);
return finder.result_ ? screen_win->GetNativeWindowFromHWND(finder.result_)
: nullptr;
}
bool LocalProcessWindowFinder::ShouldStopIterating(HWND hwnd) {
// If the host knows `hwnd` is not on the current_workspace, return.
gfx::NativeWindow native_win = screen_win_->GetNativeWindowFromHWND(hwnd);
std::optional<bool> on_current_workspace;
if (native_win) {
on_current_workspace =
screen_win_->IsWindowOnCurrentVirtualDesktop(native_win);
}
if (on_current_workspace == false)
return false;
// Ignore non visible and cloaked windows. This will include windows not on
// the current virtual desktop, which are cloaked.
RECT r;
if (!IsWindowVisible(hwnd) || gfx::IsWindowCloaked(hwnd) ||
!GetWindowRect(hwnd, &r) || !PtInRect(&r, screen_loc_.ToPOINT())) {
return false; // Window is not at `screen_loc_`.
}
// The window is at the correct position on the screen.
// Don't set `result_` if the window is occluded, because there is at least
// one window covering the browser window. E.g., tab drag drop shouldn't
// drop on an occluded browser window.
if (!native_win || !screen_win_->IsNativeWindowOccluded(native_win))
result_ = hwnd;
return true;
}
LocalProcessWindowFinder::LocalProcessWindowFinder(const gfx::Point& screen_loc,
ScreenWin* screen_win,
const std::set<HWND>& ignore)
: BaseWindowFinderWin(ignore), screen_win_(screen_win) {
screen_loc_ = display::win::GetScreenWin()->DIPToScreenPoint(screen_loc);
EnumThreadWindows(GetCurrentThreadId(), WindowCallbackProc, as_lparam());
}
LocalProcessWindowFinder::~LocalProcessWindowFinder() = default;
} // namespace display::win
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