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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/aura/window_tree_host_win.h"
#include <windows.h>
#include <algorithm>
#include "base/message_loop/message_loop.h"
#include "ui/aura/client/cursor_client.h"
#include "ui/aura/window_event_dispatcher.h"
#include "ui/base/cursor/cursor_loader_win.h"
#include "ui/base/view_prop.h"
#include "ui/compositor/compositor.h"
#include "ui/events/event.h"
#include "ui/gfx/display.h"
#include "ui/gfx/insets.h"
#include "ui/gfx/screen.h"
using std::max;
using std::min;
namespace aura {
namespace {
bool use_popup_as_root_window_for_test = false;
} // namespace
// static
WindowTreeHost* WindowTreeHost::Create(const gfx::Rect& bounds) {
return new WindowTreeHostWin(bounds);
}
// static
gfx::Size WindowTreeHost::GetNativeScreenSize() {
return gfx::Size(GetSystemMetrics(SM_CXSCREEN),
GetSystemMetrics(SM_CYSCREEN));
}
WindowTreeHostWin::WindowTreeHostWin(const gfx::Rect& bounds)
: has_capture_(false) {
if (use_popup_as_root_window_for_test)
set_window_style(WS_POPUP);
Init(NULL, bounds);
SetWindowText(hwnd(), L"aura::RootWindow!");
CreateCompositor(GetAcceleratedWidget());
}
WindowTreeHostWin::~WindowTreeHostWin() {
DestroyCompositor();
DestroyDispatcher();
DestroyWindow(hwnd());
}
ui::EventSource* WindowTreeHostWin::GetEventSource() {
return this;
}
gfx::AcceleratedWidget WindowTreeHostWin::GetAcceleratedWidget() {
return hwnd();
}
void WindowTreeHostWin::Show() {
ShowWindow(hwnd(), SW_SHOWNORMAL);
}
void WindowTreeHostWin::Hide() {
NOTIMPLEMENTED();
}
gfx::Rect WindowTreeHostWin::GetBounds() const {
RECT r;
GetClientRect(hwnd(), &r);
return gfx::Rect(r);
}
void WindowTreeHostWin::SetBounds(const gfx::Rect& bounds) {
RECT window_rect;
window_rect.left = bounds.x();
window_rect.top = bounds.y();
window_rect.right = bounds.right() ;
window_rect.bottom = bounds.bottom();
AdjustWindowRectEx(&window_rect,
GetWindowLong(hwnd(), GWL_STYLE),
FALSE,
GetWindowLong(hwnd(), GWL_EXSTYLE));
SetWindowPos(
hwnd(),
NULL,
window_rect.left,
window_rect.top,
window_rect.right - window_rect.left,
window_rect.bottom - window_rect.top,
SWP_NOMOVE | SWP_NOOWNERZORDER | SWP_NOREDRAW | SWP_NOREPOSITION);
// Explicity call OnHostResized when the scale has changed because
// the window size may not have changed.
float current_scale = compositor()->device_scale_factor();
float new_scale = gfx::Screen::GetScreenFor(window())->
GetDisplayNearestWindow(window()).device_scale_factor();
if (current_scale != new_scale)
OnHostResized(bounds.size());
}
gfx::Point WindowTreeHostWin::GetLocationOnNativeScreen() const {
RECT r;
GetClientRect(hwnd(), &r);
return gfx::Point(r.left, r.top);
}
void WindowTreeHostWin::SetCapture() {
if (!has_capture_) {
has_capture_ = true;
::SetCapture(hwnd());
}
}
void WindowTreeHostWin::ReleaseCapture() {
if (has_capture_) {
has_capture_ = false;
::ReleaseCapture();
}
}
void WindowTreeHostWin::SetCursorNative(gfx::NativeCursor native_cursor) {
// Custom web cursors are handled directly.
if (native_cursor == ui::kCursorCustom)
return;
ui::CursorLoaderWin cursor_loader;
cursor_loader.SetPlatformCursor(&native_cursor);
::SetCursor(native_cursor.platform());
}
void WindowTreeHostWin::MoveCursorToNative(const gfx::Point& location) {
// Deliberately not implemented.
}
void WindowTreeHostWin::OnCursorVisibilityChangedNative(bool show) {
NOTIMPLEMENTED();
}
void WindowTreeHostWin::PostNativeEvent(const base::NativeEvent& native_event) {
::PostMessage(
hwnd(), native_event.message, native_event.wParam, native_event.lParam);
}
ui::EventProcessor* WindowTreeHostWin::GetEventProcessor() {
return dispatcher();
}
void WindowTreeHostWin::OnClose() {
// TODO: this obviously shouldn't be here.
base::MessageLoopForUI::current()->Quit();
}
LRESULT WindowTreeHostWin::OnKeyEvent(UINT message,
WPARAM w_param,
LPARAM l_param) {
MSG msg = { hwnd(), message, w_param, l_param };
ui::KeyEvent keyev(msg, message == WM_CHAR);
ui::EventDispatchDetails details = SendEventToProcessor(&keyev);
SetMsgHandled(keyev.handled() || details.dispatcher_destroyed);
return 0;
}
LRESULT WindowTreeHostWin::OnMouseRange(UINT message,
WPARAM w_param,
LPARAM l_param) {
MSG msg = { hwnd(), message, w_param, l_param, 0,
{ CR_GET_X_LPARAM(l_param), CR_GET_Y_LPARAM(l_param) } };
ui::MouseEvent event(msg);
bool handled = false;
if (!(event.flags() & ui::EF_IS_NON_CLIENT)) {
ui::EventDispatchDetails details = SendEventToProcessor(&event);
handled = event.handled() || details.dispatcher_destroyed;
}
SetMsgHandled(handled);
return 0;
}
LRESULT WindowTreeHostWin::OnCaptureChanged(UINT message,
WPARAM w_param,
LPARAM l_param) {
if (has_capture_) {
has_capture_ = false;
OnHostLostWindowCapture();
}
return 0;
}
LRESULT WindowTreeHostWin::OnNCActivate(UINT message,
WPARAM w_param,
LPARAM l_param) {
if (!!w_param)
OnHostActivated();
return DefWindowProc(hwnd(), message, w_param, l_param);
}
void WindowTreeHostWin::OnMove(const gfx::Point& point) {
OnHostMoved(point);
}
void WindowTreeHostWin::OnPaint(HDC dc) {
gfx::Rect damage_rect;
RECT update_rect = {0};
if (GetUpdateRect(hwnd(), &update_rect, FALSE))
damage_rect = gfx::Rect(update_rect);
compositor()->ScheduleRedrawRect(damage_rect);
ValidateRect(hwnd(), NULL);
}
void WindowTreeHostWin::OnSize(UINT param, const gfx::Size& size) {
// Minimizing resizes the window to 0x0 which causes our layout to go all
// screwy, so we just ignore it.
if (dispatcher() && param != SIZE_MINIMIZED)
OnHostResized(size);
}
namespace test {
// static
void SetUsePopupAsRootWindowForTest(bool use) {
use_popup_as_root_window_for_test = use;
}
} // namespace test
} // namespace aura
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