src/lib/tvgCanvasImpl.h

   1 /*
   2  * Copyright (c) 2020 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   4  *  Licensed under the Apache License, Version 2.0 (the "License");
   5  *  you may not use this file except in compliance with the License.
   6  *  You may obtain a copy of the License at
   7  *
   8  *               http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  *  Unless required by applicable law or agreed to in writing, software
  11  *  distributed under the License is distributed on an "AS IS" BASIS,
  12  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  *  See the License for the specific language governing permissions and
  14  *  limitations under the License.
  15  *
  16  */
  17 #ifndef _TVG_CANVAS_IMPL_H_
  18 #define _TVG_CANVAS_IMPL_H_
  19
  20 #include "tvgCommon.h"
  21
  22 /************************************************************************/
  23 /* Internal Class Implementation                                        */
  24 /************************************************************************/
  25
  26 struct Canvas::Impl
  27 {
  28     vector<Paint*> paints;
  29     RenderMethod*  renderer;
  30
  31     Impl(RenderMethod* pRenderer):renderer(pRenderer)
  32     {
  33         renderer->ref();
  34     }
  35
  36     ~Impl()
  37     {
  38         clear();
  39         renderer->unref();
  40     }
  41
  42     Result push(unique_ptr<Paint> paint)
  43     {
  44         auto p = paint.release();
  45         assert(p);
  46         paints.push_back(p);
  47
  48         return update(p);
  49     }
  50
  51     Result clear()
  52     {
  53         assert(renderer);
  54
  55         for (auto paint : paints) {
  56             if (paint->id() == PAINT_ID_SCENE) {
  57                 //We know renderer type, avoid dynamic_cast for performance.
  58                 auto scene = static_cast<Scene*>(paint);
  59                 if (!SCENE_IMPL->clear(*renderer)) return Result::InsufficientCondition;
  60             } else {
  61                 auto shape = static_cast<Shape*>(paint);
  62                 if (!SHAPE_IMPL->dispose(*shape, *renderer)) return Result::InsufficientCondition;
  63             }
  64             delete(paint);
  65         }
  66         paints.clear();
  67
  68         return Result::Success;
  69     }
  70
  71     Result update()
  72     {
  73         assert(renderer);
  74
  75         for(auto paint: paints) {
  76             if (paint->id() == PAINT_ID_SCENE) {
  77                 //We know renderer type, avoid dynamic_cast for performance.
  78                 auto scene = static_cast<Scene*>(paint);
  79                 if (!SCENE_IMPL->update(*renderer, nullptr)) return Result::InsufficientCondition;
  80             } else {
  81                 auto shape = static_cast<Shape*>(paint);
  82                 if (!SHAPE_IMPL->update(*shape, *renderer, nullptr)) return Result::InsufficientCondition;
  83             }
  84         }
  85         return Result::Success;
  86     }
  87
  88     Result update(Paint* paint)
  89     {
  90         assert(renderer);
  91
  92         if (paint->id() == PAINT_ID_SCENE) {
  93             //We know renderer type, avoid dynamic_cast for performance.
  94             auto scene = static_cast<Scene*>(paint);
  95             if (!SCENE_IMPL->update(*renderer)) return Result::InsufficientCondition;
  96         } else {
  97             auto shape = static_cast<Shape*>(paint);
  98             if (!SHAPE_IMPL->update(*shape, *renderer)) return Result::InsufficientCondition;
  99         }
 100         return Result::Success;
 101     }
 102
 103     Result draw()
 104     {
 105         assert(renderer);
 106
 107         //Clear render target before drawing
 108         if (!renderer->clear()) return Result::InsufficientCondition;
 109
 110         for(auto paint: paints) {
 111            if (paint->id() == PAINT_ID_SCENE) {
 112                 //We know renderer type, avoid dynamic_cast for performance.
 113                 auto scene = static_cast<Scene*>(paint);
 114                 if(!SCENE_IMPL->render(*renderer)) return Result::InsufficientCondition;
 115             } else {
 116                 auto shape = static_cast<Shape*>(paint);
 117                 if(!SHAPE_IMPL->render(*shape, *renderer)) return Result::InsufficientCondition;
 118             }
 119         }
 120         return Result::Success;
 121     }
 122 };
 123
 124 #endif /* _TVG_CANVAS_IMPL_H_ */