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 <X11/Xlib.h>
  10 #include <X11/Xutil.h>
  11 #include "gdi.h"
  12 #include "callback.h"
  13 #include "dc.h"
  14 #include "bitmap.h"
  15 #include "heap.h"
  16 #include "stddebug.h"
  17 #include "debug.h"
  18
  19 /***********************************************************************
  20  *           X11DRV_BITMAP_Init
  21  */
  22 BOOL32 X11DRV_BITMAP_Init(void)
  23 {
  24     Pixmap tmpPixmap;
  25
  26       /* Create the necessary GCs */
  27
  28     if ((tmpPixmap = XCreatePixmap( display, rootWindow, 1, 1, 1 )))
  29     {
  30         BITMAP_monoGC = XCreateGC( display, tmpPixmap, 0, NULL );
  31         XSetGraphicsExposures( display, BITMAP_monoGC, False );
  32         XFreePixmap( display, tmpPixmap );
  33     }
  34
  35     if (screenDepth != 1)
  36     {
  37         if ((tmpPixmap = XCreatePixmap(display, rootWindow, 1,1,screenDepth)))
  38         {
  39             BITMAP_colorGC = XCreateGC( display, tmpPixmap, 0, NULL );
  40             XSetGraphicsExposures( display, BITMAP_colorGC, False );
  41             XFreePixmap( display, tmpPixmap );
  42         }
  43     }
  44     return TRUE;
  45 }
  46
  47 /***********************************************************************
  48  *           X11DRV_BITMAP_SelectObject
  49  */
  50 HBITMAP32 X11DRV_BITMAP_SelectObject( DC * dc, HBITMAP32 hbitmap,
  51                                       BITMAPOBJ * bmp )
  52 {
  53     HRGN32 hrgn;
  54     HBITMAP32 prevHandle = dc->w.hBitmap;
  55
  56     if (!(dc->w.flags & DC_MEMORY)) return 0;
  57
  58     if (dc->w.hVisRgn)
  59        SetRectRgn32( dc->w.hVisRgn, 0, 0,
  60                      bmp->bitmap.bmWidth, bmp->bitmap.bmHeight );
  61     else
  62     {
  63        hrgn = CreateRectRgn32(0, 0, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight);
  64        if (!hrgn) return 0;
  65        dc->w.hVisRgn    = hrgn;
  66     }
  67
  68     dc->u.x.drawable = bmp->pixmap;
  69     dc->w.hBitmap    = hbitmap;
  70
  71       /* Change GC depth if needed */
  72
  73     if (dc->w.bitsPerPixel != bmp->bitmap.bmBitsPixel)
  74     {
  75         XFreeGC( display, dc->u.x.gc );
  76         dc->u.x.gc = XCreateGC( display, dc->u.x.drawable, 0, NULL );
  77         dc->w.bitsPerPixel = bmp->bitmap.bmBitsPixel;
  78         DC_InitDC( dc );
  79     }
  80     else CLIPPING_UpdateGCRegion( dc );  /* Just update GC clip region */
  81     return prevHandle;
  82 }