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#ifndef lint |
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static const char RCSid[] = "$Id: xraster.c,v 3.2 2003/02/25 02:47:22 greg Exp $"; |
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#endif |
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/* |
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* xraster.c - routines to handle images for X windows. |
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*/ |
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|
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#include "copyright.h" |
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|
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#include <stdio.h> |
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|
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#include <X/Xlib.h> |
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|
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#include "xraster.h" |
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|
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|
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int * |
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map_rcolors(xr) /* get and assign pixels */ |
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register XRASTER *xr; |
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{ |
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register int i; |
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register unsigned char *p; |
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int j; |
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|
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if (xr->ncolors == 0) |
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return(NULL); |
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if (xr->pixels != NULL) |
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return(xr->pixels); |
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xr->pixels = (int *)malloc(xr->ncolors*sizeof(int)); |
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if (xr->pixels == NULL) |
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return(NULL); |
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if (XGetColorCells(0, xr->ncolors, 0, &j, xr->pixels) == 0) { |
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free((void *)xr->pixels); |
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xr->pixels = NULL; |
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return(NULL); |
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} |
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for (i = 0; i < xr->ncolors; i++) |
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if (xr->pmap[xr->pixels[i]] == -1) |
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break; |
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if (i < xr->ncolors) { /* different pixels */ |
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for (p = xr->data.bz, i = BZPixmapSize(xr->width,xr->height); |
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i--; p++) |
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*p = xr->pixels[xr->pmap[*p]]; |
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for (i = 0; i < 256; i++) |
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xr->pmap[i] = -1; |
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for (i = 0; i < xr->ncolors; i++) { |
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xr->cdefs[i].pixel = xr->pixels[i]; |
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xr->pmap[xr->pixels[i]] = i; |
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} |
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free_rpixmap(xr); /* Pixmap invalid */ |
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} |
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XStoreColors(xr->ncolors, xr->cdefs); |
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return(xr->pixels); |
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} |
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|
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|
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Pixmap |
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make_rpixmap(xr) /* make pixmap for raster */ |
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register XRASTER *xr; |
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{ |
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Bitmap bm; |
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|
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if (xr->pm != 0) |
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return(xr->pm); |
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if (xr->ncolors > 0) { |
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if (DisplayPlanes() < 2 || DisplayPlanes() > 8) |
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return(0); |
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xr->pm = XStorePixmapZ(xr->width, xr->height, xr->data.bz); |
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} else { |
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bm = XStoreBitmap(xr->width, xr->height, xr->data.m); |
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if (bm == 0) |
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return(0); |
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xr->pm = XMakePixmap(bm, BlackPixel, WhitePixel); |
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XFreeBitmap(bm); |
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} |
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return(xr->pm); |
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} |
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|
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|
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unmap_rcolors(xr) /* free colors */ |
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register XRASTER *xr; |
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{ |
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if (xr->pixels == NULL) |
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return; |
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XFreeColors(xr->pixels, xr->ncolors, 0); |
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free((void *)xr->pixels); |
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xr->pixels = NULL; |
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} |
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|
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|
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free_rpixmap(xr) /* release Pixmap */ |
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register XRASTER *xr; |
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{ |
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if (xr->pm == 0) |
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return; |
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XFreePixmap(xr->pm); |
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xr->pm = 0; |
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} |
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|
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|
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free_raster(xr) /* free raster data */ |
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register XRASTER *xr; |
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{ |
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free_rpixmap(xr); |
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if (xr->ncolors > 0) { |
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unmap_rcolors(xr); |
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free((void *)xr->data.bz); |
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free((void *)xr->pmap); |
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free((void *)xr->cdefs); |
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} else |
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free((void *)xr->data.m); |
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free((void *)xr); |
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} |
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|
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|
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put_raster(w, x, y, xr) /* put raster into window */ |
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Window w; |
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int x, y; |
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register XRASTER *xr; |
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{ |
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if (xr->pm != 0) { |
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XPixmapPut(w, 0, 0, x, y, xr->width, xr->height, |
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xr->pm, GXcopy, AllPlanes); |
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} else if (xr->ncolors > 0) { |
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if (DisplayPlanes() < 2 || DisplayPlanes() > 8) |
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return(0); |
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XPixmapBitsPutZ(w, x, y, xr->width, xr->height, |
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xr->data.bz, 0, GXcopy, AllPlanes); |
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} else { |
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XBitmapBitsPut(w, x, y, xr->width, xr->height, |
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xr->data.m, BlackPixel, WhitePixel, |
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0, GXcopy, AllPlanes); |
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} |
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return(1); |
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} |
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|
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|
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patch_raster(w, xsrc, ysrc, xdst, ydst, width, height, xr) /* piece */ |
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Window w; |
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int xsrc, ysrc, xdst, ydst; |
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int width, height; |
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register XRASTER *xr; |
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{ |
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register char *p; |
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|
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if (xsrc >= xr->width || ysrc >= xr->height) |
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return(1); |
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if (xsrc < 0) { |
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xdst -= xsrc; width += xsrc; |
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xsrc = 0; |
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} |
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if (ysrc < 0) { |
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ydst -= ysrc; height += ysrc; |
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ysrc = 0; |
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} |
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if (width <= 0 || height <= 0) |
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return(1); |
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if (xsrc + width > xr->width) |
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width = xr->width - xsrc; |
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if (ysrc + height > xr->height) |
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height = xr->height - ysrc; |
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if (xr->pm != 0) { |
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XPixmapPut(w, xsrc, ysrc, xdst, ydst, width, height, |
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xr->pm, GXcopy, AllPlanes); |
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} else if (xr->ncolors > 0) { |
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if (DisplayPlanes() < 2 || DisplayPlanes() > 8) |
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return(0); |
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p = (char *)xr->data.bz + BZPixmapSize(xr->width,ysrc) |
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+ BZPixmapSize(xsrc,1); |
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while (height--) { |
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XPixmapBitsPutZ(w, xdst, ydst, width, 1, p, |
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0, GXcopy, AllPlanes); |
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p += BZPixmapSize(xr->width,1); |
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ydst++; |
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} |
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} else { |
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xdst -= xsrc&15; width += xsrc&15; |
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xsrc &= ~15; |
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p = (char *)xr->data.m + BitmapSize(xr->width,ysrc) |
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+ BitmapSize(xsrc,1); |
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while (height--) { |
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XBitmapBitsPut(w, xdst, ydst, width, 1, |
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p, BlackPixel, WhitePixel, |
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0, GXcopy, AllPlanes); |
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p += BitmapSize(xr->width,1); |
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ydst++; |
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} |
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} |
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return(1); |
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} |
