base/applications/paint/selection.c

   1 /*
   2  * PROJECT:     PAINT for ReactOS
   3  * LICENSE:     LGPL
   4  * FILE:        base/applications/paint/selection.c
   5  * PURPOSE:     Window procedure of the selection window
   6  * PROGRAMMERS: Benedikt Freisen
   7  */
   8
   9 /* INCLUDES *********************************************************/
  10
  11 #include <windows.h>
  12 #include "globalvar.h"
  13 #include "drawing.h"
  14 #include "history.h"
  15 #include "mouse.h"
  16
  17 /* FUNCTIONS ********************************************************/
  18
  19 BOOL moving = FALSE;
  20 short xPos;
  21 short yPos;
  22
  23 LRESULT CALLBACK
  24 SelectionWinProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
  25 {
  26     switch (message)
  27     {
  28         case WM_PAINT:
  29         {
  30             if (!moving)
  31             {
  32                 HDC hDC = GetDC(hwnd);
  33                 DefWindowProc(hwnd, message, wParam, lParam);
  34                 SelectionFrame(hDC, 1, 1, rectSel_dest[2] * zoom / 1000 + 5,
  35                                rectSel_dest[3] * zoom / 1000 + 5);
  36                 ReleaseDC(hwnd, hDC);
  37             }
  38             break;
  39         }
  40         case WM_LBUTTONDOWN:
  41             xPos = LOWORD(lParam);
  42             yPos = HIWORD(lParam);
  43             SetCapture(hwnd);
  44             moving = TRUE;
  45             break;
  46         case WM_MOUSEMOVE:
  47             if (moving)
  48             {
  49                 resetToU1();
  50                 rectSel_dest[0] += (short)LOWORD(lParam) - xPos;
  51                 rectSel_dest[1] += (short)HIWORD(lParam) - yPos;
  52
  53                 Rect(hDrawingDC, rectSel_src[0], rectSel_src[1], rectSel_src[0] + rectSel_src[2],
  54                      rectSel_src[1] + rectSel_src[3], bgColor, bgColor, 0, TRUE);
  55                 if (transpBg == 0)
  56                     BitBlt(hDrawingDC, rectSel_dest[0], rectSel_dest[1], rectSel_dest[2], rectSel_dest[3],
  57                            hSelDC, 0, 0, SRCCOPY);
  58                 else
  59                     BitBlt(hDrawingDC, rectSel_dest[0], rectSel_dest[1], rectSel_dest[2], rectSel_dest[3],
  60                            hSelDC, 0, 0, SRCAND);
  61                     //TransparentBlt(hDrawingDC, rectSel_dest[0], rectSel_dest[1], rectSel_dest[2], rectSel_dest[3],
  62                     //               hSelDC, 0, 0, rectSel_dest[2], rectSel_dest[3], bgColor);
  63                 SendMessage(hImageArea, WM_PAINT, 0, 0);
  64                 xPos = LOWORD(lParam);
  65                 yPos = HIWORD(lParam);
  66                 //SendMessage(hwnd, WM_PAINT, 0, 0);
  67             }
  68             break;
  69         case WM_LBUTTONUP:
  70             if (moving)
  71             {
  72                 moving = FALSE;
  73                 ReleaseCapture();
  74                 placeSelWin();
  75                 ShowWindow(hSelection, SW_HIDE);
  76                 ShowWindow(hSelection, SW_SHOW);
  77             }
  78             break;
  79         default:
  80             return DefWindowProc(hwnd, message, wParam, lParam);
  81     }
  82
  83     return 0;
  84 }