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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 <gtk/gtk.h>
#include "app/gfx/canvas_paint.h"
#include "base/logging.h"
#include "views/widget/widget_gtk.h"
namespace views {
void RootView::OnPaint(GdkEventExpose* event) {
WidgetGtk* widget = static_cast<WidgetGtk*>(GetWidget());
if (!widget) {
NOTREACHED();
return;
}
gfx::Rect scheduled_dirty_rect = GetScheduledPaintRectConstrainedToSize();
gfx::Rect expose_rect = gfx::Rect(event->area);
gfx::CanvasPaint canvas(event);
bool invoked_process_paint = false;
if (!canvas.is_empty()) {
canvas.set_composite_alpha(widget->is_transparent());
SchedulePaint(gfx::Rect(canvas.rectangle()), false);
if (NeedsPainting(false)) {
ProcessPaint(&canvas);
invoked_process_paint = true;
}
}
if (invoked_process_paint && !scheduled_dirty_rect.IsEmpty() &&
!expose_rect.Contains(scheduled_dirty_rect) && widget &&
!widget->in_paint_now()) {
// We're painting as the result of Gtk wanting us to paint (not from views)
// and there was a region scheduled by views to be painted that is not
// contained in the region gtk wants us to paint. As a result of the
// ProcessPaint call above views no longer thinks it needs to be painted.
// We have to invoke SchedulePaint here to be sure we end up painting the
// region views wants to paint, otherwise we'll drop the views paint region
// on the floor.
//
// NOTE: We don't expand the region to paint to include
// scheduled_dirty_rect as that results in us drawing on top of any GTK
// widgets that don't have a window. We have to schedule the paint through
// GTK so that such widgets are painted.
SchedulePaint(scheduled_dirty_rect, false);
}
}
void RootView::StartDragForViewFromMouseEvent(
View* view,
const OSExchangeData& data,
int operation) {
// NOTE: view may be null.
drag_view_ = view;
static_cast<WidgetGtk*>(GetWidget())->DoDrag(data, operation);
// 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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