| // Copyright 2014 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 UI_ACCELERATED_WIDGET_MAC_ACCELERATED_WIDGET_MAC_H_ |
| #define UI_ACCELERATED_WIDGET_MAC_ACCELERATED_WIDGET_MAC_H_ |
| |
| #include <vector> |
| |
| #include "ui/accelerated_widget_mac/accelerated_widget_mac_export.h" |
| #include "ui/accelerated_widget_mac/ca_layer_frame_sink.h" |
| #include "ui/gfx/geometry/size.h" |
| #include "ui/gfx/native_widget_types.h" |
| |
| namespace ui { |
| |
| // A class through which an AcceleratedWidget may be bound to draw the contents |
| // of an NSView. An AcceleratedWidget may be bound to multiple different views |
| // throughout its lifetime (one at a time, though). |
| class AcceleratedWidgetMacNSView { |
| public: |
| // Called when the AcceleratedWidgetMac's CALayerFrameSink interface's |
| // UpdateCALayerTree method is called. This is used to update background |
| // colors and to suppressing drawing of blank windows until content is |
| // available. |
| virtual void AcceleratedWidgetCALayerParamsUpdated() = 0; |
| }; |
| |
| // AcceleratedWidgetMac owns a tree of CALayers. The widget may be passed |
| // to a ui::Compositor, which will, through its output surface, call the |
| // CALayerFrameSink interface. The CALayers may be installed in an NSView |
| // by setting the AcceleratedWidgetMacNSView for the helper. |
| class ACCELERATED_WIDGET_MAC_EXPORT AcceleratedWidgetMac |
| : public CALayerFrameSink { |
| public: |
| AcceleratedWidgetMac(); |
| ~AcceleratedWidgetMac() override; |
| |
| gfx::AcceleratedWidget accelerated_widget() { return native_widget_; } |
| |
| void SetNSView(AcceleratedWidgetMacNSView* view); |
| void ResetNSView(); |
| |
| // Returns the CALayer parameters most recently sent to the CALayerFrameSink |
| // interface, or nullptr if none are available. |
| const gfx::CALayerParams* GetCALayerParams() const; |
| |
| // Return true if the last frame swapped has a size in DIP of |dip_size|. |
| bool HasFrameOfSize(const gfx::Size& dip_size) const; |
| |
| // If |suspended| is true, then ignore all new frames that come in until |
| // a call is made with |suspended| as false. |
| void SetSuspended(bool suspended); |
| |
| private: |
| // For CALayerFrameSink::FromAcceleratedWidget to access Get. |
| friend class CALayerFrameSink; |
| |
| // Translate from a gfx::AcceleratedWidget handle to the underlying |
| // AcceleratedWidgetMac (used by other gfx::AcceleratedWidget translation |
| // functions). |
| static AcceleratedWidgetMac* Get(gfx::AcceleratedWidget widget); |
| |
| // gfx::CALayerFrameSink implementation: |
| void UpdateCALayerTree(const gfx::CALayerParams& ca_layer_params) override; |
| |
| // The AcceleratedWidgetMacNSView that is using this as its internals. |
| AcceleratedWidgetMacNSView* view_ = nullptr; |
| |
| // A phony NSView handle used to identify this. |
| gfx::AcceleratedWidget native_widget_ = gfx::kNullAcceleratedWidget; |
| |
| // If the output surface is suspended, then updates to the layer parameters |
| // will be ignored. |
| bool is_suspended_ = false; |
| |
| // The last CALayer parameter update from the CALayerFrameSink interface. |
| bool last_ca_layer_params_valid_ = false; |
| gfx::CALayerParams last_ca_layer_params_; |
| |
| DISALLOW_COPY_AND_ASSIGN(AcceleratedWidgetMac); |
| }; |
| |
| } // namespace ui |
| |
| #endif // UI_ACCELERATED_WIDGET_MAC_ACCELERATED_WIDGET_MAC_H_ |