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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_DRAG_WINDOW_RESIZER_H_
- #define ASH_WM_DRAG_WINDOW_RESIZER_H_
- #include <memory>
- #include "ash/ash_export.h"
- #include "ash/wm/window_resizer.h"
- #include "base/compiler_specific.h"
- #include "base/gtest_prod_util.h"
- #include "base/memory/weak_ptr.h"
- #include "ui/gfx/geometry/point_f.h"
- namespace ash {
- class DragWindowController;
- // DragWindowResizer is a decorator of WindowResizer and adds the ability to
- // drag windows across displays.
- class ASH_EXPORT DragWindowResizer : public WindowResizer {
- public:
- // Creates DragWindowResizer that adds the ability of dragging windows across
- // displays to |next_window_resizer|.
- DragWindowResizer(std::unique_ptr<WindowResizer> next_window_resizer,
- WindowState* window_state);
- DragWindowResizer(const DragWindowResizer&) = delete;
- DragWindowResizer& operator=(const DragWindowResizer&) = delete;
- ~DragWindowResizer() override;
- // WindowResizer:
- void Drag(const gfx::PointF& location, int event_flags) override;
- void CompleteDrag() override;
- void RevertDrag() override;
- void FlingOrSwipe(ui::GestureEvent* event) override;
- WindowResizer* next_window_resizer_for_testing() {
- return next_window_resizer_.get();
- }
- private:
- FRIEND_TEST_ALL_PREFIXES(DragWindowResizerTest, DragWindowController);
- FRIEND_TEST_ALL_PREFIXES(DragWindowResizerTest,
- DragWindowControllerAcrossThreeDisplays);
- // Updates the bounds of the drag window for window dragging.
- void UpdateDragWindow();
- // Returns true if we should allow the mouse pointer to warp.
- bool ShouldAllowMouseWarp();
- // Do the real work of ending a drag. If the drag ends in a different display,
- // move the dragged window to that display.
- void EndDragImpl();
- std::unique_ptr<WindowResizer> next_window_resizer_;
- // Shows a semi-transparent image of the window being dragged.
- std::unique_ptr<DragWindowController> drag_window_controller_;
- gfx::PointF last_mouse_location_;
- // Current instance for use by the DragWindowResizerTest.
- static DragWindowResizer* instance_;
- base::WeakPtrFactory<DragWindowResizer> weak_ptr_factory_{this};
- };
- } // namespace ash
- #endif // ASH_WM_DRAG_WINDOW_RESIZER_H_
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