src/servers/app/Layer.h

   1 /*
   2  * Copyright 2015 Julian Harnath <julian.harnath@rwth-aachen.de>
   3  * All rights reserved. Distributed under the terms of the MIT license.
   4  */
   5 #ifndef LAYER_H
   6 #define LAYER_H
   7
   8
   9 #include "ServerPicture.h"
  10
  11 #include "IntPoint.h"
  12
  13
  14 class AlphaMask;
  15 class Canvas;
  16 class UtilityBitmap;
  17
  18
  19 class Layer : public ServerPicture {
  20 public:
  21                                                                 Layer(uint8 opacity);
  22         virtual                                         ~Layer();
  23
  24                         void                            PushLayer(Layer* layer);
  25                         Layer*                          PopLayer();
  26
  27                         UtilityBitmap*          RenderToBitmap(Canvas* canvas);
  28
  29                         IntPoint                        LeftTopOffset() const;
  30                         uint8                           Opacity() const;
  31
  32 private:
  33                         BRect                           _DetermineBoundingBox(Canvas* canvas);
  34                         UtilityBitmap*          _AllocateBitmap(const BRect& bounds);
  35
  36 private:
  37                         uint8                           fOpacity;
  38                         IntPoint                        fLeftTopOffset;
  39 };
  40
  41
  42 #endif // LAYER_H