cc/surfaces/surface_hittest.h

   1 // Copyright 2015 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_SURFACES_SURFACE_HITTEST_H_
   6 #define CC_SURFACES_SURFACE_HITTEST_H_
   7
   8 #include <set>
   9
  10 #include "cc/surfaces/surface_id.h"
  11 #include "cc/surfaces/surfaces_export.h"
  12
  13 namespace gfx {
  14 class Point;
  15 }
  16
  17 namespace cc {
  18 class RenderPass;
  19 class SurfaceManager;
  20
  21 // Performs a hittest in surface quads.
  22 class CC_SURFACES_EXPORT SurfaceHittest {
  23  public:
  24   explicit SurfaceHittest(SurfaceManager* manager);
  25   ~SurfaceHittest();
  26
  27   // Hittests against Surface with SurfaceId |surface_id|, return the contained
  28   // surface that the point is hitting and the |transformed_point| in the
  29   // surface space.
  30   SurfaceId Hittest(SurfaceId surface_id,
  31                     const gfx::Point& point,
  32                     gfx::Point* transformed_point);
  33
  34  private:
  35   bool HittestInternal(SurfaceId surface_id,
  36                        const RenderPass* render_pass,
  37                        const gfx::Point& point,
  38                        SurfaceId* out_surface_id,
  39                        gfx::Point* out_transformed_point);
  40
  41   SurfaceManager* const manager_;
  42   std::set<const RenderPass*> referenced_passes_;
  43 };
  44 }  // namespace cc
  45
  46 #endif  // CC_SURFACES_SURFACE_HITTEST_H_