graphics/x11drv/bitmap.c

   1 /*
   2  * GDI bitmap objects
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  */
   6
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include "ts_xlib.h"
  10 #include "ts_xutil.h"
  11 #include "gdi.h"
  12 #include "callback.h"
  13 #include "dc.h"
  14 #include "bitmap.h"
  15 #include "heap.h"
  16 #include "debug.h"
  17
  18 /***********************************************************************
  19  *           X11DRV_BITMAP_Init
  20  */
  21 BOOL32 X11DRV_BITMAP_Init(void)
  22 {
  23     Pixmap tmpPixmap;
  24
  25       /* Create the necessary GCs */
  26
  27     if ((tmpPixmap = TSXCreatePixmap( display, rootWindow, 1, 1, 1 )))
  28     {
  29         BITMAP_monoGC = TSXCreateGC( display, tmpPixmap, 0, NULL );
  30         TSXSetGraphicsExposures( display, BITMAP_monoGC, False );
  31         TSXFreePixmap( display, tmpPixmap );
  32     }
  33
  34     if (screenDepth != 1)
  35     {
  36         if ((tmpPixmap = TSXCreatePixmap(display, rootWindow, 1,1,screenDepth)))
  37         {
  38             BITMAP_colorGC = TSXCreateGC( display, tmpPixmap, 0, NULL );
  39             TSXSetGraphicsExposures( display, BITMAP_colorGC, False );
  40             TSXFreePixmap( display, tmpPixmap );
  41         }
  42     }
  43     return TRUE;
  44 }
  45
  46 /***********************************************************************
  47  *           X11DRV_BITMAP_SelectObject
  48  */
  49 HBITMAP32 X11DRV_BITMAP_SelectObject( DC * dc, HBITMAP32 hbitmap,
  50                                       BITMAPOBJ * bmp )
  51 {
  52     HRGN32 hrgn;
  53     HBITMAP32 prevHandle = dc->w.hBitmap;
  54
  55     if (!(dc->w.flags & DC_MEMORY)) return 0;
  56
  57     dc->w.totalExtent.left   = 0;
  58     dc->w.totalExtent.top    = 0;
  59     dc->w.totalExtent.right  = bmp->bitmap.bmWidth;
  60     dc->w.totalExtent.bottom = bmp->bitmap.bmHeight;
  61
  62     if (dc->w.hVisRgn)
  63        SetRectRgn32( dc->w.hVisRgn, 0, 0,
  64                      bmp->bitmap.bmWidth, bmp->bitmap.bmHeight );
  65     else
  66     {
  67        hrgn = CreateRectRgn32(0, 0, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight);
  68        if (!hrgn) return 0;
  69        dc->w.hVisRgn    = hrgn;
  70     }
  71
  72     dc->u.x.drawable = bmp->pixmap;
  73     dc->w.hBitmap    = hbitmap;
  74
  75       /* Change GC depth if needed */
  76
  77     if (dc->w.bitsPerPixel != bmp->bitmap.bmBitsPixel)
  78     {
  79         TSXFreeGC( display, dc->u.x.gc );
  80         dc->u.x.gc = TSXCreateGC( display, dc->u.x.drawable, 0, NULL );
  81         dc->w.bitsPerPixel = bmp->bitmap.bmBitsPixel;
  82         DC_InitDC( dc );
  83     }
  84     else CLIPPING_UpdateGCRegion( dc );  /* Just update GC clip region */
  85     return prevHandle;
  86 }