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// Copyright 2018 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/base/win/hwnd_metrics.h"
#include "ui/display/screen.h"
#include "ui/display/win/screen_win.h"
#include "ui/display/win/screen_win_headless.h"
namespace ui {
namespace {
int GetFrameThicknessFromDisplayId(int64_t id) {
const int resize_frame_thickness =
display::win::GetScreenWinHeadless()->GetSystemMetricsForDisplayId(
id, SM_CXSIZEFRAME);
const int padding_thickness =
display::win::GetScreenWinHeadless()->GetSystemMetricsForDisplayId(
id, SM_CXPADDEDBORDER);
return resize_frame_thickness + padding_thickness;
}
} // namespace
int GetResizableFrameThicknessFromMonitorInPixels(HMONITOR monitor,
bool has_caption) {
const int resize_handle_thickness =
display::win::GetScreenWin()->GetSystemMetricsForMonitor(monitor,
SM_CXSIZEFRAME);
// SM_CXPADDEDBORDER is some extra padding not part of the resize handle.
const int padding_thickness =
display::win::GetScreenWin()->GetSystemMetricsForMonitor(
monitor, SM_CXPADDEDBORDER);
// If a window has WS_CAPTION set the frame thickness includes a 1px border.
// This border must be removed if WS_CAPTION is not set.
return resize_handle_thickness + padding_thickness - (has_caption ? 0 : 1);
}
int GetResizableFrameThicknessFromMonitorInDIP(HMONITOR monitor,
bool has_caption) {
return GetResizableFrameThicknessFromMonitorInPixels(monitor, has_caption) /
display::win::GetScreenWin()->GetScaleFactorForMonitor(monitor);
}
int GetFrameThicknessFromWindow(HWND hwnd, DWORD default_options) {
if (display::Screen::GetScreen()->IsHeadless()) {
return GetFrameThicknessFromDisplayId(
display::win::GetScreenWinHeadless()->GetDisplayIdFromWindow(
hwnd, default_options));
} else {
HMONITOR monitor = ::MonitorFromWindow(hwnd, default_options);
return GetResizableFrameThicknessFromMonitorInPixels(
monitor, GetWindowLong(hwnd, GWL_STYLE) & WS_CAPTION);
}
}
int GetFrameThicknessFromScreenRect(const gfx::Rect& screen_rect) {
if (display::Screen::GetScreen()->IsHeadless()) {
return GetFrameThicknessFromDisplayId(
display::win::GetScreenWinHeadless()->GetDisplayIdFromScreenRect(
screen_rect));
} else {
// This should never be used in headful mode due to the lack of support by
// display::win::ScreenWin.
NOTREACHED();
}
}
} // namespace ui
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