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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 "views/widget/root_view.h"
#include "app/drag_drop_types.h"
#include "app/gfx/canvas_paint.h"
#include "app/os_exchange_data.h"
#include "app/os_exchange_data_provider_win.h"
#include "base/base_drag_source.h"
#include "base/logging.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);
}
gfx::CanvasPaint canvas(hwnd);
if (!canvas.isEmpty()) {
const PAINTSTRUCT& ps = canvas.paintStruct();
SchedulePaint(gfx::Rect(ps.rcPaint), false);
if (NeedsPainting(false))
ProcessPaint(&canvas);
}
}
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();
}
}
}
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