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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gfx/screen_win.h"
#include <windows.h>
#include "base/logging.h"
#include "ui/base/win/dpi.h"
#include "ui/gfx/display.h"
namespace {
MONITORINFO GetMonitorInfoForMonitor(HMONITOR monitor) {
MONITORINFO monitor_info = { 0 };
monitor_info.cbSize = sizeof(monitor_info);
GetMonitorInfo(monitor, &monitor_info);
return monitor_info;
}
gfx::Display GetDisplay(MONITORINFO& monitor_info) {
// TODO(oshima): Implement ID and Observer.
gfx::Rect bounds = gfx::Rect(monitor_info.rcMonitor);
gfx::Display display(0, bounds);
display.set_work_area(gfx::Rect(monitor_info.rcWork));
display.SetScaleAndBounds(ui::win::GetDeviceScaleFactor(), bounds);
return display;
}
} // namespace
namespace gfx {
ScreenWin::ScreenWin() {
}
ScreenWin::~ScreenWin() {
}
bool ScreenWin::IsDIPEnabled() {
return ui::IsInHighDPIMode();
}
gfx::Point ScreenWin::GetCursorScreenPoint() {
POINT pt;
GetCursorPos(&pt);
return gfx::Point(pt);
}
gfx::NativeWindow ScreenWin::GetWindowAtCursorScreenPoint() {
POINT location;
HWND window_hwnd = GetCursorPos(&location) ? WindowFromPoint(location) : NULL;
return GetNativeWindowFromHWND(window_hwnd);
}
int ScreenWin::GetNumDisplays() {
return GetSystemMetrics(SM_CMONITORS);
}
gfx::Display ScreenWin::GetDisplayNearestWindow(gfx::NativeView window) const {
HWND window_hwnd = GetHWNDFromNativeView(window);
if (!window_hwnd) {
// When |window| isn't rooted to a display, we should just return the
// default display so we get some correct display information like the
// scaling factor.
return GetPrimaryDisplay();
}
MONITORINFO monitor_info;
monitor_info.cbSize = sizeof(monitor_info);
GetMonitorInfo(MonitorFromWindow(window_hwnd, MONITOR_DEFAULTTONEAREST),
&monitor_info);
return GetDisplay(monitor_info);
}
gfx::Display ScreenWin::GetDisplayNearestPoint(const gfx::Point& point) const {
POINT initial_loc = { point.x(), point.y() };
HMONITOR monitor = MonitorFromPoint(initial_loc, MONITOR_DEFAULTTONEAREST);
MONITORINFO mi = {0};
mi.cbSize = sizeof(mi);
if (monitor && GetMonitorInfo(monitor, &mi))
return GetDisplay(mi);
return gfx::Display();
}
gfx::Display ScreenWin::GetDisplayMatching(const gfx::Rect& match_rect) const {
RECT other_bounds_rect = match_rect.ToRECT();
MONITORINFO monitor_info = GetMonitorInfoForMonitor(MonitorFromRect(
&other_bounds_rect, MONITOR_DEFAULTTONEAREST));
return GetDisplay(monitor_info);
}
gfx::Display ScreenWin::GetPrimaryDisplay() const {
MONITORINFO mi = GetMonitorInfoForMonitor(
MonitorFromWindow(NULL, MONITOR_DEFAULTTOPRIMARY));
gfx::Display display = GetDisplay(mi);
// TODO(kevers|girard): Test if these checks can be reintroduced for high-DIP
// once more of the app is DIP-aware.
if (!ui::IsInHighDPIMode()) {
DCHECK_EQ(GetSystemMetrics(SM_CXSCREEN), display.size().width());
DCHECK_EQ(GetSystemMetrics(SM_CYSCREEN), display.size().height());
}
return display;
}
void ScreenWin::AddObserver(DisplayObserver* observer) {
// TODO(oshima): crbug.com/122863.
}
void ScreenWin::RemoveObserver(DisplayObserver* observer) {
// TODO(oshima): crbug.com/122863.
}
HWND ScreenWin::GetHWNDFromNativeView(NativeView window) const {
#if defined(USE_AURA)
NOTREACHED();
return NULL;
#else
return window;
#endif // USE_AURA
}
NativeWindow ScreenWin::GetNativeWindowFromHWND(HWND hwnd) const {
#if defined(USE_AURA)
NOTREACHED();
return NULL;
#else
return hwnd;
#endif // USE_AURA
}
#if !defined(USE_AURA)
Screen* CreateNativeScreen() {
return new ScreenWin;
}
#endif // !USE_AURA
} // namespace gfx
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