blob: 126513fbaf9a161fc2423fe2697d56aefaedee40 [file] [log] [blame]
// Copyright (c) 2010 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 "views/widget/root_view.h"
#include "app/drag_drop_types.h"
#include "app/os_exchange_data.h"
#include "app/os_exchange_data_provider_win.h"
#include "base/base_drag_source.h"
#include "gfx/canvas_skia.h"
namespace views {
void RootView::OnPaint(HWND hwnd) {
gfx::Rect original_dirty_region = GetScheduledPaintRectConstrainedToSize();
if (!original_dirty_region.IsEmpty()) {
// 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.
RECT win_version = original_dirty_region.ToRECT();
InvalidateRect(hwnd, &win_version, FALSE);
}
scoped_ptr<gfx::CanvasPaint> canvas(
gfx::CanvasPaint::CreateCanvasPaint(hwnd));
if (!canvas->IsValid()) {
SchedulePaint(canvas->GetInvalidRect(), false);
if (NeedsPainting(false))
ProcessPaint(canvas->AsCanvas());
}
}
void RootView::StartDragForViewFromMouseEvent(
View* view,
const OSExchangeData& data,
int operation) {
// NOTE: view may be null.
drag_view_ = view;
scoped_refptr<BaseDragSource> drag_source(new BaseDragSource);
DWORD effects;
DoDragDrop(OSExchangeDataProviderWin::GetIDataObject(data), drag_source,
DragDropTypes::DragOperationToDropEffect(operation), &effects);
// If the view is removed during the drag operation, drag_view_ is set to
// NULL.
if (view && drag_view_ == view) {
View* drag_view = drag_view_;
drag_view_ = NULL;
drag_view->OnDragDone();
}
}
}