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// Copyright (c) 2006-2008 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 "chrome/views/root_view.h"
#include "base/base_drag_source.h"
#include "base/logging.h"
#include "chrome/common/drag_drop_types.h"
#include "chrome/views/root_view_drop_target.h"
namespace views {
RECT RootView::GetScheduledPaintRectConstrainedToSize() {
if (invalid_rect_.IsEmpty())
return invalid_rect_.ToRECT();
return invalid_rect_.Intersect(GetLocalBounds(true)).ToRECT();
}
void RootView::UpdateCursor(const MouseEvent& e) {
View *v = GetViewForPoint(e.location());
if (v && v != this) {
gfx::Point l(e.location());
View::ConvertPointToView(this, v, &l);
HCURSOR cursor = v->GetCursorForPoint(e.GetType(), l.x(), l.y());
if (cursor) {
::SetCursor(cursor);
return;
}
}
if (previous_cursor_) {
SetCursor(previous_cursor_);
}
}
void RootView::OnPaint(HWND hwnd) {
RECT original_dirty_region = GetScheduledPaintRectConstrainedToSize();
if (!IsRectEmpty(&original_dirty_region)) {
// Invoke InvalidateRect so that the dirty region of the window includes the
// region we need to paint. If we didn't do this and the region didn't
// include the dirty region, ProcessPaint would incorrectly mark everything
// as clean. This can happen if a WM_PAINT is generated by the system before
// the InvokeLater schedule by RootView is processed.
InvalidateRect(hwnd, &original_dirty_region, FALSE);
}
ChromeCanvasPaint canvas(hwnd);
if (!canvas.isEmpty()) {
const PAINTSTRUCT& ps = canvas.paintStruct();
SchedulePaint(gfx::Rect(ps.rcPaint), false);
if (NeedsPainting(false))
ProcessPaint(&canvas);
}
}
bool RootView::GetAccessibleRole(VARIANT* role) {
DCHECK(role);
role->vt = VT_I4;
role->lVal = ROLE_SYSTEM_APPLICATION;
return true;
}
void RootView::StartDragForViewFromMouseEvent(
View* view,
IDataObject* data,
int operation) {
drag_view_ = view;
scoped_refptr<BaseDragSource> drag_source(new BaseDragSource);
DWORD effects;
DoDragDrop(data, drag_source,
DragDropTypes::DragOperationToDropEffect(operation), &effects);
// If the view is removed during the drag operation, drag_view_ is set to
// NULL.
if (drag_view_ == view) {
View* drag_view = drag_view_;
drag_view_ = NULL;
drag_view->OnDragDone();
}
}
}
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