/*********************************************************************
* Function: void GOLRedrawRec(SHORT left, SHORT top, SHORT right, SHORT bottom)
*
* PreCondition: none
*
* Input: left,top,right,bottom - rectangle borders
*
* Output: none
*
* Side Effects: none
*
* Overview: marks objects with parts in the rectangle to be redrawn
*
* Note: none
*
********************************************************************/
void GOLRedrawRec(SHORT left, SHORT top, SHORT right, SHORT bottom){
OBJ_HEADER *pCurrentObj;
pCurrentObj = _pGolObjects;
while(pCurrentObj != NULL){
if( !( (pCurrentObj->left > right) ||
(pCurrentObj->right < left) ||
(pCurrentObj->top > bottom) ||
(pCurrentObj->bottom < top) ) )
if( ( (pCurrentObj->left >= left)&&
(pCurrentObj->left <= right) ) ||
( (pCurrentObj->right >= left)&&
(pCurrentObj->right <= right) ) ||
( (pCurrentObj->top >= top)&&
(pCurrentObj->top <= bottom) )||
( (pCurrentObj->bottom >= top)&&
(pCurrentObj->bottom <= bottom) ) ){
GOLRedraw(pCurrentObj);
}
pCurrentObj = pCurrentObj->pNxtObj;
}//end of while
}
/*********************************************************************
* Function: void GOLRedrawRec(SHORT left, SHORT top, SHORT right, SHORT bottom)
*
* PreCondition: none
*
* Input: left,top,right,bottom - rectangle borders
*
* Output: none
*
* Side Effects: none
*
* Overview: marks objects with parts in the rectangle to be redrawn
*
* Note: none
*
********************************************************************/
void GOLRedrawRec(SHORT left, SHORT top, SHORT right, SHORT bottom)
{
OBJ_HEADER *pCurrentObj;
int overlapX, overlapY;
pCurrentObj = _pGolObjects;
while(pCurrentObj != NULL)
{
overlapX = overlapY = 0;
// check overlaps in x direction
if( ((pCurrentObj->left <= left) && (pCurrentObj->right >= left)) || \
((pCurrentObj->left <= right) && (pCurrentObj->right >= right)) || \
((pCurrentObj->left <= left) && (pCurrentObj->right >= right)) || \
((pCurrentObj->left >= left) && (pCurrentObj->right <= right)) \
)
overlapX = 1;
// check overlaps in y direction
if( ((pCurrentObj->top <= top) && (pCurrentObj->bottom >= top)) || \
((pCurrentObj->top <= bottom) && (pCurrentObj->bottom >= bottom))|| \
((pCurrentObj->top <= top) && (pCurrentObj->bottom >= bottom)) || \
((pCurrentObj->top >= top) && (pCurrentObj->bottom <= bottom)) \
)
overlapY = 1;
// when any portion of the widget is touched by the defined rectangle the
// x and y overlaps will exist.
if (overlapX & overlapY)
{
GOLRedraw(pCurrentObj);
}
pCurrentObj = (OBJ_HEADER *)pCurrentObj->pNxtObj;
} //end of while
}
