// Copyright 2017 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_FAST_INK_FAST_INK_VIEW_H_ #define ASH_FAST_INK_FAST_INK_VIEW_H_ #include #include #include "ash/fast_ink/fast_ink_host.h" #include "ui/aura/window.h" #include "ui/gfx/canvas.h" #include "ui/views/view.h" #include "ui/views/widget/unique_widget_ptr.h" namespace gfx { class GpuMemoryBuffer; } // namespace gfx namespace fast_ink { // FastInkView is a view supporting low-latency rendering by using FastInkHost. // The view's widget must have the same bounds as a root window (covers the // entire display). FastInkHost for more details. class FastInkView : public views::View { public: ~FastInkView() override; FastInkView(const FastInkView&) = delete; FastInkView& operator=(const FastInkView&) = delete; // Function to create a container Widget, pass ownership of |fast_ink_view| // as the contents view to the Widget. fast_ink_view fills the bounds of the // root_window. static views::UniqueWidgetPtr CreateWidgetWithContents( std::unique_ptr fast_ink_view, aura::Window* container); // Update content and damage rectangles for surface. See // FastInkHost::UpdateSurface for more detials. void UpdateSurface(const gfx::Rect& content_rect, const gfx::Rect& damage_rect, bool auto_refresh); virtual FastInkHost::PresentationCallback GetPresentationCallback(); protected: // Helper class that provides flicker free painting to a GPU memory buffer. class ScopedPaint { public: ScopedPaint(FastInkView* view, const gfx::Rect& damage_rect_in_window); ScopedPaint(const ScopedPaint&) = delete; ScopedPaint& operator=(const ScopedPaint&) = delete; ~ScopedPaint(); gfx::Canvas& canvas() { return canvas_; } private: gfx::GpuMemoryBuffer* const gpu_memory_buffer_; // Damage rect in the buffer coordinates. const gfx::Rect damage_rect_; gfx::Canvas canvas_; }; FastInkView(); void SetFastInkHost(std::unique_ptr host); FastInkHost* host() { return host_.get(); } private: std::unique_ptr host_; }; } // namespace fast_ink #endif // ASH_FAST_INK_FAST_INK_VIEW_H_