1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CC_OUTPUT_COMPOSITOR_FRAME_METADATA_H_ 6 #define CC_OUTPUT_COMPOSITOR_FRAME_METADATA_H_ 7 8 #include <vector> 9 10 #include "cc/base/cc_export.h" 11 #include "cc/output/viewport_selection_bound.h" 12 #include "ui/events/latency_info.h" 13 #include "ui/gfx/geometry/size_f.h" 14 #include "ui/gfx/geometry/vector2d_f.h" 15 16 namespace cc { 17 18 class CC_EXPORT CompositorFrameMetadata { 19 public: 20 CompositorFrameMetadata(); 21 ~CompositorFrameMetadata(); 22 23 // The device scale factor used to generate this compositor frame. 24 float device_scale_factor; 25 26 // Scroll offset and scale of the root layer. This can be used for tasks 27 // like positioning windowed plugins. 28 gfx::Vector2dF root_scroll_offset; 29 float page_scale_factor; 30 31 // These limits can be used together with the scroll/scale fields above to 32 // determine if scrolling/scaling in a particular direction is possible. 33 gfx::SizeF scrollable_viewport_size; 34 gfx::SizeF root_layer_size; 35 float min_page_scale_factor; 36 float max_page_scale_factor; 37 38 // Used to position the Android location top bar and page content, whose 39 // precise position is computed by the renderer compositor. 40 gfx::Vector2dF location_bar_offset; 41 gfx::Vector2dF location_bar_content_translation; 42 43 // Provides selection region updates relative to the current viewport. If the 44 // selection is empty or otherwise unused, the bound types will indicate such. 45 ViewportSelectionBound selection_start; 46 ViewportSelectionBound selection_end; 47 48 std::vector<ui::LatencyInfo> latency_info; 49 }; 50 51 } // namespace cc 52 53 #endif // CC_OUTPUT_COMPOSITOR_FRAME_METADATA_H_ 54
