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// Copyright (c) 2012 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.
#ifndef ASH_WM_PARTIAL_SCREENSHOT_VIEW_H_
#define ASH_WM_PARTIAL_SCREENSHOT_VIEW_H_
#include "ash/ash_export.h"
#include "ash/wm/overlay_event_filter.h"
#include "base/compiler_specific.h"
#include "ui/gfx/point.h"
#include "ui/views/widget/widget_delegate.h"
namespace ash {
class ScreenshotDelegate;
// The view of taking partial screenshot, i.e.: drawing region
// rectangles during drag, and changing the mouse cursor to indicate
// the current mode.
class ASH_EXPORT PartialScreenshotView
: public views::WidgetDelegateView,
public internal::OverlayEventFilter::Delegate {
public:
PartialScreenshotView(ScreenshotDelegate* screenshot_delegate);
virtual ~PartialScreenshotView();
// Starts the UI for taking partial screenshot; dragging to select a region.
static void StartPartialScreenshot(ScreenshotDelegate* screenshot_delegate);
// Overriddden from View:
virtual gfx::NativeCursor GetCursor(const views::MouseEvent& event) OVERRIDE;
// Overridden from internal::OverlayEventFilter::Delegate:
virtual void Cancel() OVERRIDE;
virtual bool IsCancelingKeyEvent(aura::KeyEvent* event) OVERRIDE;
virtual aura::Window* GetWindow() OVERRIDE;
private:
gfx::Rect GetScreenshotRect() const;
// Overridden from View:
virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
virtual void OnMouseCaptureLost() OVERRIDE;
virtual bool OnMousePressed(const views::MouseEvent& event) OVERRIDE;
virtual bool OnMouseDragged(const views::MouseEvent& event) OVERRIDE;
virtual bool OnMouseWheel(const views::MouseWheelEvent& event) OVERRIDE;
virtual void OnMouseReleased(const views::MouseEvent& event) OVERRIDE;
bool is_dragging_;
gfx::Point start_position_;
gfx::Point current_position_;
ScreenshotDelegate* screenshot_delegate_;
DISALLOW_COPY_AND_ASSIGN(PartialScreenshotView);
};
} // namespace ash
#endif // #ifndef ASH_WM_PARTIAL_SCREENSHOT_VIEW_H_
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