rosapps/games/solitaire/cardlib/dropzone.cpp

   1 //
   2 //    CardLib - DropZone class
   3 //
   4 //    Freeware
   5 //    Copyright J Brown 2001
   6 //
   7 #include <windows.h>
   8
   9 #include "cardlib.h"
  10 #include "cardwindow.h"
  11 #include "dropzone.h"
  12
  13 bool CardWindow::RegisterDropZone(int id, RECT *rect, pDropZoneProc proc)
  14 {
  15     if(nNumDropZones == MAXDROPZONES)
  16         return false;
  17
  18     DropZone *dz = new DropZone(id, rect, proc);
  19
  20     dropzone[nNumDropZones++] = dz;
  21
  22     return false;
  23 }
  24
  25 DropZone *CardWindow::GetDropZoneFromRect(RECT *rect)
  26 {
  27     for(int i = 0; i < nNumDropZones; i++)
  28     {
  29         RECT inter;
  30         RECT zone;
  31
  32         //if any part of the drag rectangle falls within a drop zone,
  33         //let that take priority over any other card stack.
  34         dropzone[i]->GetZone(&zone);
  35
  36         if(IntersectRect(&inter, rect, &zone))
  37         {
  38             //see if the callback wants us to drop a card on
  39             //a particular stack
  40             return dropzone[i];
  41         }
  42     }
  43
  44     return 0;
  45 }
  46
  47 bool CardWindow::DeleteDropZone(int id)
  48 {
  49     for(int i = 0; i < nNumDropZones; i++)
  50     {
  51         if(dropzone[i]->id == id)
  52         {
  53             DropZone *dz = dropzone[i];
  54
  55             //shift any after this one backwards
  56             for(int j = i; j < nNumDropZones - 1; j++)
  57             {
  58                 dropzone[j] = dropzone[j + 1];
  59             }
  60
  61             delete dz;
  62             nNumDropZones--;
  63             return true;
  64         }
  65     }
  66
  67     return false;
  68 }
  69