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// Copyright (c) 2011 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/views/widget/widget.h"
#include "base/compiler_specific.h"
#include "base/message_loop.h"
#include "ui/views/focus/focus_manager.h"
#include "ui/views/view.h"
#include "ui/views/widget/native_widget.h"
#include "ui/views/widget/root_view.h"
namespace ui {
namespace {
// TODO(beng): move to platform file
int GetHorizontalDragThreshold() {
static int threshold = -1;
if (threshold == -1)
threshold = GetSystemMetrics(SM_CXDRAG) / 2;
return threshold;
}
// TODO(beng): move to platform file
int GetVerticalDragThreshold() {
static int threshold = -1;
if (threshold == -1)
threshold = GetSystemMetrics(SM_CYDRAG) / 2;
return threshold;
}
bool ExceededDragThreshold(int delta_x, int delta_y) {
return (abs(delta_x) > GetHorizontalDragThreshold() ||
abs(delta_y) > GetVerticalDragThreshold());
}
}
////////////////////////////////////////////////////////////////////////////////
// Widget, public:
Widget::Widget(View* contents_view)
: ALLOW_THIS_IN_INITIALIZER_LIST(
native_widget_(NativeWidget::CreateNativeWidget(this))),
ALLOW_THIS_IN_INITIALIZER_LIST(
root_view_(new internal::RootView(this, contents_view))),
is_mouse_button_pressed_(false),
last_mouse_event_was_move_(false),
ALLOW_THIS_IN_INITIALIZER_LIST(close_widget_factory_(this)),
delete_on_destroy_(true) {
}
Widget::~Widget() {
}
void Widget::InitWithNativeViewParent(gfx::NativeView parent,
const gfx::Rect& bounds) {
native_widget_->InitWithNativeViewParent(parent, bounds);
}
void Widget::InitWithWidgetParent(Widget* parent, const gfx::Rect& bounds) {
native_widget_->InitWithWidgetParent(parent, bounds);
}
void Widget::InitWithViewParent(View* parent, const gfx::Rect& bounds) {
native_widget_->InitWithViewParent(parent, bounds);
}
Widget* Widget::GetTopLevelWidget() const {
NativeWidget* native_widget =
NativeWidget::GetTopLevelNativeWidget(native_widget_->GetNativeView());
return native_widget->GetWidget();
}
gfx::Rect Widget::GetWindowScreenBounds() const {
return native_widget_->GetWindowScreenBounds();
}
gfx::Rect Widget::GetClientAreaScreenBounds() const {
return native_widget_->GetClientAreaScreenBounds();
}
void Widget::SetBounds(const gfx::Rect& bounds) {
native_widget_->SetBounds(bounds);
}
void Widget::SetShape(const gfx::Path& shape) {
native_widget_->SetShape(shape);
}
void Widget::Show() {
native_widget_->Show();
}
void Widget::Hide() {
native_widget_->Hide();
}
void Widget::Close() {
native_widget_->Hide();
if (close_widget_factory_.empty()) {
MessageLoop::current()->PostTask(FROM_HERE,
close_widget_factory_.NewRunnableMethod(&Widget::CloseNow));
}
}
void Widget::MoveAbove(Widget* other) {
native_widget_->MoveAbove(other->native_widget());
}
void Widget::InvalidateRect(const gfx::Rect& invalid_rect) {
native_widget_->InvalidateRect(invalid_rect);
}
ThemeProvider* Widget::GetThemeProvider() const {
return NULL;
}
FocusManager* Widget::GetFocusManager() const {
return GetTopLevelWidget()->focus_manager_.get();
}
////////////////////////////////////////////////////////////////////////////////
// Widget, NativeWidgetListener implementation:
void Widget::OnClose() {
Close();
}
void Widget::OnDestroy() {
if (delete_on_destroy_)
delete this;
}
void Widget::OnDisplayChanged() {
// TODO(beng):
}
bool Widget::OnKeyEvent(const KeyEvent& event) {
// find root view.
//return root_view_->OnKeyEvent(event);
return true;
}
void Widget::OnMouseCaptureLost() {
if (native_widget_->HasMouseCapture()) {
if (is_mouse_button_pressed_)
root_view_->OnMouseCaptureLost();
is_mouse_button_pressed_ = false;
}
}
bool Widget::OnMouseEvent(const MouseEvent& event) {
last_mouse_event_was_move_ = false;
switch (event.type()) {
case Event::ET_MOUSE_PRESSED:
if (root_view_->OnMousePressed(event)) {
is_mouse_button_pressed_ = true;
if (!native_widget_->HasMouseCapture())
native_widget_->SetMouseCapture();
return true;
}
return false;
case Event::ET_MOUSE_RELEASED:
// TODO(beng): NativeWidgetGtk should not call this function if drag data
// exists, see comment in this function in WidgetGtk.
// Release the capture first, that way we don't get confused if
// OnMouseReleased blocks.
if (native_widget_->HasMouseCapture() &&
native_widget_->ShouldReleaseCaptureOnMouseReleased()) {
native_widget_->ReleaseMouseCapture();
}
is_mouse_button_pressed_ = false;
root_view_->OnMouseReleased(event);
return true;
case Event::ET_MOUSE_MOVED:
if (native_widget_->HasMouseCapture() && is_mouse_button_pressed_) {
last_mouse_event_was_move_ = false;
root_view_->OnMouseDragged(event);
} else {
gfx::Point screen_loc(event.location());
View::ConvertPointToScreen(root_view_.get(), &screen_loc);
if (last_mouse_event_was_move_ &&
last_mouse_event_position_ == screen_loc) {
// Don't generate a mouse event for the same location as the last.
return true;
}
last_mouse_event_position_ = screen_loc;
last_mouse_event_was_move_ = true;
root_view_->OnMouseMoved(event);
}
break;
case Event::ET_MOUSE_EXITED:
root_view_->OnMouseExited(event);
return true;
}
return true;
}
bool Widget::OnMouseWheelEvent(const MouseWheelEvent& event) {
return root_view_->OnMouseWheel(event);
}
void Widget::OnNativeWidgetCreated() {
if (GetTopLevelWidget() == this)
focus_manager_.reset(new FocusManager(this));
}
void Widget::OnPaint(gfx::Canvas* canvas) {
root_view_->Paint(canvas);
}
void Widget::OnSizeChanged(const gfx::Size& size) {
root_view_->SetSize(size);
}
void Widget::OnNativeFocus(gfx::NativeView focused_view) {
GetFocusManager()->GetWidgetFocusManager()->OnWidgetFocusEvent(
focused_view, native_widget_->GetNativeView());
}
void Widget::OnNativeBlur(gfx::NativeView focused_view) {
GetFocusManager()->GetWidgetFocusManager()->OnWidgetFocusEvent(
native_widget_->GetNativeView(), focused_view);
}
void Widget::OnWorkAreaChanged() {
}
Widget* Widget::GetWidget() const {
return const_cast<Widget*>(this);
}
////////////////////////////////////////////////////////////////////////////////
// Widget, private:
void Widget::CloseNow() {
native_widget_->Close();
}
} // namespace ui
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