src/px/x11raster.c

/* Copyright 1990 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "$SunId$ LBL";
#endif

/*
 * x11raster.c - routines to handle images for X windows.
 *
 *      2/18/88
 */

#include <stdio.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>

#include "color.h"
#include "x11raster.h"


XRASTER *
make_raster(disp, vis, npixbits, data, width, height, bm_pad)
Display *disp;
XVisualInfo     *vis;
int     npixbits;
char    *data;
int     width, height;
int     bm_pad;
{
        static long     swaptest = 1;
        register XRASTER        *xr;

        if ((xr = (XRASTER *)calloc(1, sizeof(XRASTER))) == NULL)
                return(NULL);
        xr->disp = disp;
        xr->screen = vis->screen;
        xr->visual = vis->visual;
        if (npixbits == 1)
                xr->image = XCreateImage(disp,vis->visual,1,
                                XYBitmap,0,data,width,height,bm_pad,0);
        else
                xr->image = XCreateImage(disp,vis->visual,vis->depth,
                                ZPixmap,0,data,width,height,bm_pad,0);
        xr->image->bitmap_bit_order = MSBFirst;
        xr->image->bitmap_unit = bm_pad;
        xr->image->byte_order = *(char *)&swaptest ? LSBFirst : MSBFirst;
        if (vis->depth >= 24 && (xr->image->red_mask != 0xff ||
                        xr->image->green_mask != 0xff00 ||
                        xr->image->blue_mask != 0xff0000) &&
                        (xr->image->red_mask != 0xff0000 ||
                        xr->image->green_mask != 0xff00 ||
                        xr->image->blue_mask != 0xff)) {
                xr->image->red_mask = 0xff;
                xr->image->green_mask = 0xff00;
                xr->image->blue_mask = 0xff0000;
        }
        xr->gc = 0;
        return(xr);
}


int
init_rcolors(xr, cmap)                  /* initialize colors */
register XRASTER        *xr;
BYTE    cmap[][3];
{
        register unsigned char  *p;
        register int    i;

        if (xr->image->depth > 8 | xr->ncolors != 0)
                return(xr->ncolors);
        xr->pmap = (short *)malloc(256*sizeof(short));
        if (xr->pmap == NULL)
                return(0);
        xr->cdefs = (XColor *)malloc(256*sizeof(XColor));
        if (xr->cdefs == NULL)
                return(0);
        for (i = 0; i < 256; i++)
                xr->pmap[i] = -1;
        for (p = (unsigned char *)xr->image->data,
                        i = xr->image->width*xr->image->height;
                        i--; p++)
                if (xr->pmap[*p] == -1) {
                        xr->cdefs[xr->ncolors].red = cmap[*p][RED] << 8;
                        xr->cdefs[xr->ncolors].green = cmap[*p][GRN] << 8;
                        xr->cdefs[xr->ncolors].blue = cmap[*p][BLU] << 8;
                        xr->cdefs[xr->ncolors].pixel = *p;
                        xr->cdefs[xr->ncolors].flags = DoRed|DoGreen|DoBlue;
                        xr->pmap[*p] = xr->ncolors++;
                }
        xr->cdefs = (XColor *)realloc((char *)xr->cdefs,
                        xr->ncolors*sizeof(XColor));
        if (xr->cdefs == NULL)
                return(0);
        return(xr->ncolors);
}


Colormap
newcmap(disp, scrn, w, vis)             /* get colormap and fix b & w */
Display *disp;
int     scrn;
Window  w;
Visual  *vis;
{
        XColor  thiscolor;
        unsigned long   *pixels;
        Colormap        cmap;
        int     n;
        register int    i, j;

        cmap = XCreateColormap(disp, w, vis, AllocNone);
        if (cmap == 0)
                return(0);
        pixels=(unsigned long *)malloc(vis->map_entries*sizeof(unsigned long));
        if (pixels == NULL)
                return(0);
        for (n = vis->map_entries; n > 0; n--)
                if (XAllocColorCells(disp, cmap, 0, NULL, 0, pixels, n) != 0)
                        break;
        if (n == 0)
                return(0);
                                        /* reset black and white */
        for (i = 0; i < n; i++) {
                if (pixels[i] != BlackPixel(disp,scrn)
                                && pixels[i] != WhitePixel(disp,scrn))
                        continue;
                thiscolor.pixel = pixels[i];
                thiscolor.flags = DoRed|DoGreen|DoBlue;
                XQueryColor(disp, DefaultColormap(disp,scrn), &thiscolor);
                XStoreColor(disp, cmap, &thiscolor);
                for (j = i; j+1 < n; j++)
                        pixels[j] = pixels[j+1];
                n--;
                i--;
        }
        XFreeColors(disp, cmap, pixels, n, 0);
        free((char *)pixels);
        return(cmap);
}


unsigned long *
map_rcolors(xr, w)                              /* get and assign pixels */
register XRASTER        *xr;
Window  w;
{
        register int    i;
        register unsigned char  *p;

        if (xr->ncolors == 0 || xr->image->depth > 8)
                return(NULL);
        if (xr->pixels != NULL)
                return(xr->pixels);
        xr->pixels = (unsigned long *)malloc(xr->ncolors*sizeof(unsigned long));
        if (xr->pixels == NULL)
                return(NULL);
        if (xr->visual == DefaultVisual(xr->disp, xr->screen))
                xr->cmap = DefaultColormap(xr->disp, xr->screen);
        else
                xr->cmap = newcmap(xr->disp, xr->screen, w, xr->visual);
        while (XAllocColorCells(xr->disp, xr->cmap, 0,
                        NULL, 0, xr->pixels, xr->ncolors) == 0)
                if (xr->cmap == DefaultColormap(xr->disp, xr->screen))
                        xr->cmap = newcmap(xr->disp, xr->screen, w, xr->visual);
                else {
                        free((char *)xr->pixels);
                        xr->pixels = NULL;
                        return(NULL);
                }
        for (i = 0; i < xr->ncolors; i++)
                if (xr->pmap[xr->pixels[i]] == -1)
                        break;
        if (i < xr->ncolors) {                  /* different pixels */
                for (p = (unsigned char *)xr->image->data,
                                i = xr->image->width*xr->image->height;
                                i--; p++)
                        *p = xr->pixels[xr->pmap[*p]];
                for (i = 0; i < 256; i++)
                        xr->pmap[i] = -1;
                for (i = 0; i < xr->ncolors; i++) {
                        xr->cdefs[i].pixel = xr->pixels[i];
                        xr->pmap[xr->pixels[i]] = i;
                }
                free_rpixmap(xr);               /* Pixmap invalid */
        }
        XStoreColors(xr->disp, xr->cmap, xr->cdefs, xr->ncolors);
        XSetWindowColormap(xr->disp, w, xr->cmap);
        return(xr->pixels);
}


Pixmap
make_rpixmap(xr, w)                     /* make pixmap for raster */
register XRASTER        *xr;
Window  w;
{
        XWindowAttributes       xwattr;
        Pixmap  pm;

        if (xr->pm != 0)
                return(xr->pm);
        XGetWindowAttributes(xr->disp, w, &xwattr);
        pm = XCreatePixmap(xr->disp, w,
                        xr->image->width, xr->image->height,
                        xwattr.depth);
        if (pm == 0)
                return(0);
        put_raster(pm, 0, 0, xr);
        return(xr->pm = pm);
}


patch_raster(d, xsrc, ysrc, xdst, ydst, width, height, xr)      /* redraw */
Drawable        d;
int     xsrc, ysrc, xdst, ydst;
int     width, height;
register XRASTER        *xr;
{
        if (xsrc >= xr->image->width || ysrc >= xr->image->height)
                return;
        if (xsrc < 0) {
                xdst -= xsrc; width += xsrc;
                xsrc = 0;
        }
        if (ysrc < 0) {
                ydst -= ysrc; height += ysrc;
                ysrc = 0;
        }
        if (width <= 0 || height <= 0)
                return;
        if (xsrc + width > xr->image->width)
                width = xr->image->width - xsrc;
        if (ysrc + height > xr->image->height)
                height = xr->image->height - ysrc;

        if (xr->gc == 0) {
                xr->gc = XCreateGC(xr->disp, d, 0, 0);
                XSetState(xr->disp, xr->gc, BlackPixel(xr->disp,xr->screen),
                        WhitePixel(xr->disp,xr->screen), GXcopy, AllPlanes);
        }
        if (xr->pm == 0)
                XPutImage(xr->disp, d, xr->gc, xr->image, xsrc, ysrc,
                                xdst, ydst, width, height);
        else
                XCopyArea(xr->disp, xr->pm, d, xr->gc, xsrc, ysrc,
                                width, height, xdst, ydst);
}


unmap_rcolors(xr)                       /* free colors */
register XRASTER        *xr;
{
        if (xr->pixels == NULL)
                return;
        XFreeColors(xr->disp, xr->cmap, xr->pixels, xr->ncolors, 0);
        if (xr->cmap != DefaultColormap(xr->disp, xr->screen))
                XFreeColormap(xr->disp, xr->cmap);
        free((char *)xr->pixels);
        xr->pixels = NULL;
}


free_rpixmap(xr)                        /* release Pixmap */
register XRASTER        *xr;
{
        if (xr->pm == 0)
                return;
        XFreePixmap(xr->disp, xr->pm);
        xr->pm = 0;
}


free_raster(xr)                         /* free raster data */
register XRASTER        *xr;
{
        free_rpixmap(xr);
        if (xr->ncolors > 0) {
                unmap_rcolors(xr);
                free((char *)xr->pmap);
                free((char *)xr->cdefs);
        }
        XDestroyImage(xr->image);
        if (xr->gc != 0)
                XFreeGC(xr->disp, xr->gc);
        free((char *)xr);
}
Revision:	2.7
Committed:	Mon Oct 12 14:52:19 1992 UTC (31 years, 6 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.6:	+7 -6 lines
Log Message:	changed from ciq to clrtab routines
#	User	Rev	Content
1	greg	1.1	/* Copyright 1990 Regents of the University of California */
2
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* x11raster.c - routines to handle images for X windows.
9			*
10			* 2/18/88
11			*/
12
13			#include <stdio.h>
14			#include <X11/Xlib.h>
15			#include <X11/Xutil.h>
16
17	greg	2.7	#include "color.h"
18	greg	1.1	#include "x11raster.h"
19
20
21			XRASTER *
22	greg	2.5	make_raster(disp, vis, npixbits, data, width, height, bm_pad)
23	greg	1.1	Display *disp;
24	greg	2.5	XVisualInfo *vis;
25			int npixbits;
26	greg	1.1	char *data;
27			int width, height;
28			int bm_pad;
29			{
30	greg	2.5	static long swaptest = 1;
31	greg	1.1	register XRASTER *xr;
32	greg	2.5
33	greg	1.1	if ((xr = (XRASTER *)calloc(1, sizeof(XRASTER))) == NULL)
34			return(NULL);
35			xr->disp = disp;
36	greg	2.5	xr->screen = vis->screen;
37			xr->visual = vis->visual;
38			if (npixbits == 1)
39			xr->image = XCreateImage(disp,vis->visual,1,
40			XYBitmap,0,data,width,height,bm_pad,0);
41			else
42			xr->image = XCreateImage(disp,vis->visual,vis->depth,
43			ZPixmap,0,data,width,height,bm_pad,0);
44	greg	2.4	xr->image->bitmap_bit_order = MSBFirst;
45	greg	2.6	xr->image->bitmap_unit = bm_pad;
46	greg	2.5	xr->image->byte_order = (char )&swaptest ? LSBFirst : MSBFirst;
47			if (vis->depth >= 24 && (xr->image->red_mask != 0xff \|\|
48			xr->image->green_mask != 0xff00 \|\|
49			xr->image->blue_mask != 0xff0000) &&
50			(xr->image->red_mask != 0xff0000 \|\|
51			xr->image->green_mask != 0xff00 \|\|
52			xr->image->blue_mask != 0xff)) {
53			xr->image->red_mask = 0xff;
54			xr->image->green_mask = 0xff00;
55			xr->image->blue_mask = 0xff0000;
56	greg	1.4	}
57	greg	2.5	xr->gc = 0;
58	greg	1.1	return(xr);
59			}
60
61
62			int
63	greg	2.7	init_rcolors(xr, cmap) /* initialize colors */
64	greg	1.1	register XRASTER *xr;
65	greg	2.7	BYTE cmap[][3];
66	greg	1.1	{
67			register unsigned char *p;
68			register int i;
69
70	greg	2.7	if (xr->image->depth > 8 \| xr->ncolors != 0)
71	greg	1.1	return(xr->ncolors);
72			xr->pmap = (short )malloc(256sizeof(short));
73			if (xr->pmap == NULL)
74			return(0);
75			xr->cdefs = (XColor )malloc(256sizeof(XColor));
76			if (xr->cdefs == NULL)
77			return(0);
78			for (i = 0; i < 256; i++)
79			xr->pmap[i] = -1;
80			for (p = (unsigned char *)xr->image->data,
81			i = xr->image->width*xr->image->height;
82			i--; p++)
83			if (xr->pmap[*p] == -1) {
84	greg	2.7	xr->cdefs[xr->ncolors].red = cmap[*p][RED] << 8;
85			xr->cdefs[xr->ncolors].green = cmap[*p][GRN] << 8;
86			xr->cdefs[xr->ncolors].blue = cmap[*p][BLU] << 8;
87	greg	1.1	xr->cdefs[xr->ncolors].pixel = *p;
88			xr->cdefs[xr->ncolors].flags = DoRed\|DoGreen\|DoBlue;
89			xr->pmap[*p] = xr->ncolors++;
90			}
91			xr->cdefs = (XColor )realloc((char )xr->cdefs,
92			xr->ncolors*sizeof(XColor));
93			if (xr->cdefs == NULL)
94			return(0);
95			return(xr->ncolors);
96			}
97
98	greg	2.5
99	greg	1.3	Colormap
100			newcmap(disp, scrn, w, vis) /* get colormap and fix b & w */
101			Display *disp;
102			int scrn;
103			Window w;
104			Visual *vis;
105			{
106			XColor thiscolor;
107			unsigned long *pixels;
108			Colormap cmap;
109			int n;
110			register int i, j;
111	greg	1.1
112	greg	1.3	cmap = XCreateColormap(disp, w, vis, AllocNone);
113			if (cmap == 0)
114			return(0);
115			pixels=(unsigned long )malloc(vis->map_entriessizeof(unsigned long));
116			if (pixels == NULL)
117			return(0);
118			for (n = vis->map_entries; n > 0; n--)
119			if (XAllocColorCells(disp, cmap, 0, NULL, 0, pixels, n) != 0)
120			break;
121			if (n == 0)
122			return(0);
123			/* reset black and white */
124			for (i = 0; i < n; i++) {
125			if (pixels[i] != BlackPixel(disp,scrn)
126			&& pixels[i] != WhitePixel(disp,scrn))
127			continue;
128			thiscolor.pixel = pixels[i];
129			thiscolor.flags = DoRed\|DoGreen\|DoBlue;
130			XQueryColor(disp, DefaultColormap(disp,scrn), &thiscolor);
131			XStoreColor(disp, cmap, &thiscolor);
132			for (j = i; j+1 < n; j++)
133			pixels[j] = pixels[j+1];
134			n--;
135			i--;
136			}
137			XFreeColors(disp, cmap, pixels, n, 0);
138			free((char *)pixels);
139			return(cmap);
140			}
141
142
143	greg	1.1	unsigned long *
144			map_rcolors(xr, w) /* get and assign pixels */
145			register XRASTER *xr;
146			Window w;
147			{
148			register int i;
149			register unsigned char *p;
150
151	greg	2.6	if (xr->ncolors == 0 \|\| xr->image->depth > 8)
152	greg	1.1	return(NULL);
153			if (xr->pixels != NULL)
154			return(xr->pixels);
155			xr->pixels = (unsigned long )malloc(xr->ncolorssizeof(unsigned long));
156			if (xr->pixels == NULL)
157			return(NULL);
158	greg	1.3	if (xr->visual == DefaultVisual(xr->disp, xr->screen))
159	greg	1.1	xr->cmap = DefaultColormap(xr->disp, xr->screen);
160	greg	1.3	else
161			xr->cmap = newcmap(xr->disp, xr->screen, w, xr->visual);
162			while (XAllocColorCells(xr->disp, xr->cmap, 0,
163			NULL, 0, xr->pixels, xr->ncolors) == 0)
164	greg	1.1	if (xr->cmap == DefaultColormap(xr->disp, xr->screen))
165	greg	1.3	xr->cmap = newcmap(xr->disp, xr->screen, w, xr->visual);
166			else {
167			free((char *)xr->pixels);
168			xr->pixels = NULL;
169			return(NULL);
170			}
171	greg	1.1	for (i = 0; i < xr->ncolors; i++)
172			if (xr->pmap[xr->pixels[i]] == -1)
173			break;
174			if (i < xr->ncolors) { /* different pixels */
175			for (p = (unsigned char *)xr->image->data,
176			i = xr->image->width*xr->image->height;
177			i--; p++)
178			p = xr->pixels[xr->pmap[p]];
179			for (i = 0; i < 256; i++)
180			xr->pmap[i] = -1;
181			for (i = 0; i < xr->ncolors; i++) {
182			xr->cdefs[i].pixel = xr->pixels[i];
183			xr->pmap[xr->pixels[i]] = i;
184			}
185			free_rpixmap(xr); /* Pixmap invalid */
186			}
187			XStoreColors(xr->disp, xr->cmap, xr->cdefs, xr->ncolors);
188			XSetWindowColormap(xr->disp, w, xr->cmap);
189			return(xr->pixels);
190			}
191
192
193			Pixmap
194	greg	2.6	make_rpixmap(xr, w) /* make pixmap for raster */
195	greg	1.1	register XRASTER *xr;
196	greg	2.6	Window w;
197	greg	1.1	{
198	greg	2.6	XWindowAttributes xwattr;
199	greg	1.1	Pixmap pm;
200
201			if (xr->pm != 0)
202			return(xr->pm);
203	greg	2.6	XGetWindowAttributes(xr->disp, w, &xwattr);
204			pm = XCreatePixmap(xr->disp, w,
205	greg	1.3	xr->image->width, xr->image->height,
206	greg	2.6	xwattr.depth);
207	greg	1.1	if (pm == 0)
208			return(0);
209			put_raster(pm, 0, 0, xr);
210			return(xr->pm = pm);
211	greg	1.2	}
212
213
214			patch_raster(d, xsrc, ysrc, xdst, ydst, width, height, xr) /* redraw */
215			Drawable d;
216			int xsrc, ysrc, xdst, ydst;
217			int width, height;
218			register XRASTER *xr;
219			{
220			if (xsrc >= xr->image->width \|\| ysrc >= xr->image->height)
221			return;
222			if (xsrc < 0) {
223			xdst -= xsrc; width += xsrc;
224			xsrc = 0;
225			}
226			if (ysrc < 0) {
227			ydst -= ysrc; height += ysrc;
228			ysrc = 0;
229			}
230			if (width <= 0 \|\| height <= 0)
231			return;
232			if (xsrc + width > xr->image->width)
233			width = xr->image->width - xsrc;
234			if (ysrc + height > xr->image->height)
235			height = xr->image->height - ysrc;
236
237	greg	2.5	if (xr->gc == 0) {
238			xr->gc = XCreateGC(xr->disp, d, 0, 0);
239			XSetState(xr->disp, xr->gc, BlackPixel(xr->disp,xr->screen),
240			WhitePixel(xr->disp,xr->screen), GXcopy, AllPlanes);
241			}
242	greg	1.2	if (xr->pm == 0)
243			XPutImage(xr->disp, d, xr->gc, xr->image, xsrc, ysrc,
244			xdst, ydst, width, height);
245			else
246			XCopyArea(xr->disp, xr->pm, d, xr->gc, xsrc, ysrc,
247			width, height, xdst, ydst);
248	greg	1.1	}
249
250
251			unmap_rcolors(xr) /* free colors */
252			register XRASTER *xr;
253			{
254			if (xr->pixels == NULL)
255			return;
256			XFreeColors(xr->disp, xr->cmap, xr->pixels, xr->ncolors, 0);
257			if (xr->cmap != DefaultColormap(xr->disp, xr->screen))
258			XFreeColormap(xr->disp, xr->cmap);
259			free((char *)xr->pixels);
260			xr->pixels = NULL;
261			}
262
263
264			free_rpixmap(xr) /* release Pixmap */
265			register XRASTER *xr;
266			{
267			if (xr->pm == 0)
268			return;
269			XFreePixmap(xr->disp, xr->pm);
270			xr->pm = 0;
271			}
272
273
274			free_raster(xr) /* free raster data */
275			register XRASTER *xr;
276			{
277			free_rpixmap(xr);
278			if (xr->ncolors > 0) {
279			unmap_rcolors(xr);
280			free((char *)xr->pmap);
281			free((char *)xr->cdefs);
282			}
283			XDestroyImage(xr->image);
284	greg	2.5	if (xr->gc != 0)
285			XFreeGC(xr->disp, xr->gc);
286	greg	1.1	free((char *)xr);
287			}