dynamicSurfaceManager()

bool AppWren::dynamicSurfaceManager ( )

protected

responsible for managing the surface buffer memory allocation

Returns

true

false

Definition at line 1541 of file AppWren.cpp.

                                   {
  if(!surface_cache){
    surface_mempool = wrenFastRam;
    if (has_pop || has_focus){
      surface_cache = new Surface((uint16_t *)draw->getFrameAddress(),width,height);
      memset((uint16_t *)draw->getFrameAddress(),0,sizeof(uint16_t)*WREN_FRAME_BUFFER_SIZE);
    }else{
      surface_cache = new Surface(surface_mempool, widget_width, widget_height);
      memset(surface_mempool,0,sizeof(uint16_t)*widget_width*widget_height);
    }  
  }else{
    //check for state changes and adjust the buffer accordingly
    if (has_pop || has_focus){
      if( (width != surface_cache->getWidth()) || (height != surface_cache->getHeight()) ){
        delete(surface_cache);
        surface_cache = new Surface(surface_mempool, width, height);
        memset(surface_mempool,0,sizeof(uint16_t)*width*height);
      }
    }else{
      if( (widget_width != surface_cache->getWidth()) || (widget_height != surface_cache->getHeight()) ){
        delete(surface_cache);
        surface_cache = new Surface(surface_mempool, widget_width, widget_height);
        memset(surface_mempool,0,sizeof(uint16_t)*widget_width*widget_height);
      }
    }  
  }
  if (surface_cache==NULL)return false;
  //wrenCollectGarbage(vm);
  return true;
}

References AppBaseClass::draw, ILI9341_t3_ERIS::getFrameAddress(), Surface::getHeight(), Surface::getWidth(), AppBaseClass::has_focus, AppBaseClass::has_pop, AppBaseClass::height, surface_cache, surface_mempool, AppBaseClass::widget_height, AppBaseClass::widget_width, AppBaseClass::width, and wrenFastRam.

Referenced by bltRAMDrive2Surface(), drawFill(), releasePopUp(), render(), requestPopUp(), setDimension(), and setWidgetDimension().

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