src/xpm/simx.c

/*
 * Copyright (C) 1989-94 GROUPE BULL
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * GROUPE BULL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * Except as contained in this notice, the name of GROUPE BULL shall not be
 * used in advertising or otherwise to promote the sale, use or other dealings
 * in this Software without prior written authorization from GROUPE BULL.
 */

/*****************************************************************************\
* simx.c: 0.1a                                                                *
*                                                                             *
* This emulates some Xlib functionality for MSW. It's not a general solution, *
* it is close related to XPM-lib. It is only intended to satisfy what is need *
* there. Thus allowing to read XPM files under MS windows.                    *
*                                                                             *
* Developed by HeDu 3/94 (hedu@cul-ipn.uni-kiel.de)                           *
\*****************************************************************************/

#include "xpm34.h"

#ifdef FOR_MSW

#include "xpm34p.h"			/* for XpmMalloc */

/*
 * On DOS size_t is only 2 bytes, thus malloc(size_t s) can only malloc
 * 64K. BUT an expression data=malloc(width*height) may result in an
 * overflow. So this function takes a long as input, and returns NULL if the
 * request is larger than 64K, is size_t is only 2 bytes.
 *
 * This requires casts like XpmMalloc( (long)width*(long(height)), else it
 * might have no effect at all.
 */

void *
boundCheckingMalloc(long s)
{
    if (sizeof(size_t) == sizeof(long)) {	/* same size, just do it */
	return (malloc((size_t) s));
    } else {
	if (sizeof(size_t) == 2) {
	    if (s > 0xFFFF)
		return (NULL);		/* to large, size_t with 2 bytes
					 * only allows 16 bits */
	    else
		return (malloc((size_t) s));
	} else {			/* it's not a long, not 2 bytes,
					 * what is it ??? */
	    return (malloc((size_t) s));
	}
    }
}
void *
boundCheckingCalloc(long num, long s)
{
    if (sizeof(size_t) == sizeof(long)) {	/* same size, just do it */
	return (calloc((size_t) num, (size_t) s));
    } else {
	if (sizeof(size_t) == 2) {
	    if (s > 0xFFFF || num * s > 0xFFFF)
		return (NULL);		/* to large, size_t with 2 bytes
					 * only allows 16 bits */
	    else
		return (calloc((size_t) num, (size_t) s));
	} else {			/* it's not a long, not 2 bytes,
					 * what is it ??? */
	    return (calloc((size_t) num, (size_t) s));
	}
    }
}
void *
boundCheckingRealloc(void *p, long s)
{
    if (sizeof(size_t) == sizeof(long)) {	/* same size, just do it */
	return (realloc(p, (size_t) s));
    } else {
	if (sizeof(size_t) == 2) {
	    if (s > 0xFFFF)
		return (NULL);		/* to large, size_t with 2 bytes
					 * only allows 16 bits */
	    else
		return (realloc(p, (size_t) s));
	} else {			/* it's not a long, not 2 bytes,
					 * what is it ??? */
	    return (realloc(p, (size_t) s));
	}
    }
}

/* static Visual theVisual = { 0 }; */
Visual *
XDefaultVisual(Display *display, Screen *screen)
{
    return (NULL);			/* struct could contain info about
					 * MONO, GRAY, COLOR */
}

Screen *
XDefaultScreen(Display *d)
{
    return (NULL);
}

/* I get only 1 plane but 8 bits per pixel,
   so I think BITSPIXEL should be depth

   TRS: I assume that all "displays" have the same number of
        planes later in the code, which is based on the assumption
        that the display variable is ignored below. :)
 */
int
XDefaultDepth(Display *display, Screen *screen)
{
    int d, b;

#if !defined(__VISAGECPP__) /* fisme for OS/2 */
    b = GetDeviceCaps(*display, BITSPIXEL);
    d = GetDeviceCaps(*display, PLANES);
#endif
    return (b);
}

Colormap *
XDefaultColormap(Display *display, Screen *screen)
{
    return (NULL);
}

/* convert hex color names,
   wrong digits (not a-f,A-F,0-9) are treated as zero */
static int
hexCharToInt(char c)
{
    int r;

    if (c >= '0' && c <= '9')
	r = c - '0';
    else if (c >= 'a' && c <= 'f')
	r = c - 'a' + 10;
    else if (c >= 'A' && c <= 'F')
	r = c - 'A' + 10;
    else
	r = 0;

    return (r);
}

static int
rgbFromHex(char *hex, int *r, int *g, int *b)
{
    int len;

    if (hex == NULL || hex[0] != '#')
	return (0);

    len = strlen(hex);
    if (len == 3 + 1) {
	*r = hexCharToInt(hex[1]);
	*g = hexCharToInt(hex[2]);
	*b = hexCharToInt(hex[3]);
    } else if (len == 6 + 1) {
	*r = hexCharToInt(hex[1]) * 16 + hexCharToInt(hex[2]);
	*g = hexCharToInt(hex[3]) * 16 + hexCharToInt(hex[4]);
	*b = hexCharToInt(hex[5]) * 16 + hexCharToInt(hex[6]);
    } else if (len == 12 + 1) {
	/* it's like c #32329999CCCC */
	/* so for now only take two digits */
	*r = hexCharToInt(hex[1]) * 16 + hexCharToInt(hex[2]);
	*g = hexCharToInt(hex[5]) * 16 + hexCharToInt(hex[6]);
	*b = hexCharToInt(hex[9]) * 16 + hexCharToInt(hex[10]);
    } else
	return (0);

    return (1);
}

/* Color related functions */
int
XParseColor(Display *d, Colormap *cmap, char *name, XColor *color)
{
    int r, g, b;			/* only 8 bit values used */
    int okay;

/* TODO: use colormap via PALETTE */
    /* parse name either in table or #RRGGBB #RGB */
    if (name == NULL)
	return (0);

    if (name[0] == '#') {		/* a hex string */
	okay = rgbFromHex(name, &r, &g, &b);
    } else {
	okay = xpmGetRGBfromName(name, &r, &g, &b);
    }

    if (okay) {
#if !defined(__VISAGECPP__) /* fixme for OS/2 */
	color->pixel = RGB(r, g, b);
#endif
	color->red = (BYTE) r;
	color->green = (BYTE) g;
	color->blue = (BYTE) b;
	return (1);
    } else
	return (0);			/* --> ColorError */
}


int
XAllocColor(Display *d, Colormap *cmap, XColor *color)
{
/* colormap not used yet so color->pixel is the real COLORREF (RBG) and not an
   index in some colormap as in X */
    return (1);
}
void
XQueryColors(Display *display, Colormap *colormap,
	     XColor *xcolors, int ncolors)
{
/* under X this fills the rgb values to given .pixel */
/* since there no colormap use FOR_MSW (not yet!!), rgb is plain encoded */
    XColor *xc = xcolors;
    int i;

#if !defined(__VISAGECPP__) /* fixme for OS/2 */
    for (i = 0; i < ncolors; i++, xc++) {
	xc->red = GetRValue(xc->pixel);
	xc->green = GetGValue(xc->pixel);
	xc->blue = GetBValue(xc->pixel);
    }
#endif
    return;
}
int
XFreeColors(Display *d, Colormap cmap,
	    unsigned long pixels[], int npixels, unsigned long planes)
{
    /* no colormap yet */
    return (0);				/* correct ??? */
}

/* XImage functions */
XImage *
XCreateImage(Display *d, Visual *v,
	     int depth, int format,
	     int x, int y, int width, int height,
	     int pad, int foo)
{
    XImage *img = (XImage *) XpmMalloc(sizeof(XImage));

    if (img) {
	/* *img = CreateCompatibleBitmap(*d, width, height); */

#if !defined(__VISAGECPP__) /* fixme for OS/2 */
    /* create the bitmap with the same number of planes as the default display
     * (otherwise it wouldn't work for 16 color mode) */
	img->bitmap = CreateBitmap(width, height,
				   GetDeviceCaps(*d, PLANES),
				   depth /* bits per pixel */ , NULL);
#endif
	img->width = width;
	img->height = height;
	img->depth = depth;
    }
    return (img);

}

void
XImageFree(XImage *img)
{
    if (img) {
	XpmFree(img);
    }
}
void
XDestroyImage(XImage *img)
{
    if (img) {
#if !defined(__VISAGECPP__) /* fixme for OS/2 */
	DeleteObject(img->bitmap);	/* check return ??? */
#endif
	XImageFree(img);
    }
}

#endif
Commit	Line	Data
	1	/*
	2	* Copyright (C) 1989-94 GROUPE BULL
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a copy
	5	* of this software and associated documentation files (the "Software"), to
	6	* deal in the Software without restriction, including without limitation the
	7	* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
	8	* sell copies of the Software, and to permit persons to whom the Software is
	9	* furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* GROUPE BULL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
	18	* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	19	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	20	*
	21	* Except as contained in this notice, the name of GROUPE BULL shall not be
	22	* used in advertising or otherwise to promote the sale, use or other dealings
	23	* in this Software without prior written authorization from GROUPE BULL.
	24	*/
	25
	26	/*****************************************************************************\
	27	* simx.c: 0.1a *
	28	* *
	29	* This emulates some Xlib functionality for MSW. It's not a general solution, *
	30	* it is close related to XPM-lib. It is only intended to satisfy what is need *
	31	* there. Thus allowing to read XPM files under MS windows. *
	32	* *
	33	* Developed by HeDu 3/94 (hedu@cul-ipn.uni-kiel.de) *
	34	\*****************************************************************************/
	35
	36	#include "xpm34.h"
	37
	38	#ifdef FOR_MSW
	39
	40	#include "xpm34p.h" /* for XpmMalloc */
	41
	42	/*
	43	* On DOS size_t is only 2 bytes, thus malloc(size_t s) can only malloc
	44	* 64K. BUT an expression data=malloc(width*height) may result in an
	45	* overflow. So this function takes a long as input, and returns NULL if the
	46	* request is larger than 64K, is size_t is only 2 bytes.
	47	*
	48	* This requires casts like XpmMalloc( (long)width*(long(height)), else it
	49	* might have no effect at all.
	50	*/
	51
	52	void *
	53	boundCheckingMalloc(long s)
	54	{
	55	if (sizeof(size_t) == sizeof(long)) { /* same size, just do it */
	56	return (malloc((size_t) s));
	57	} else {
	58	if (sizeof(size_t) == 2) {
	59	if (s > 0xFFFF)
	60	return (NULL); /* to large, size_t with 2 bytes
	61	* only allows 16 bits */
	62	else
	63	return (malloc((size_t) s));
	64	} else { /* it's not a long, not 2 bytes,
	65	* what is it ??? */
	66	return (malloc((size_t) s));
	67	}
	68	}
	69	}
	70	void *
	71	boundCheckingCalloc(long num, long s)
	72	{
	73	if (sizeof(size_t) == sizeof(long)) { /* same size, just do it */
	74	return (calloc((size_t) num, (size_t) s));
	75	} else {
	76	if (sizeof(size_t) == 2) {
	77	if (s > 0xFFFF \|\| num * s > 0xFFFF)
	78	return (NULL); /* to large, size_t with 2 bytes
	79	* only allows 16 bits */
	80	else
	81	return (calloc((size_t) num, (size_t) s));
	82	} else { /* it's not a long, not 2 bytes,
	83	* what is it ??? */
	84	return (calloc((size_t) num, (size_t) s));
	85	}
	86	}
	87	}
	88	void *
	89	boundCheckingRealloc(void *p, long s)
	90	{
	91	if (sizeof(size_t) == sizeof(long)) { /* same size, just do it */
	92	return (realloc(p, (size_t) s));
	93	} else {
	94	if (sizeof(size_t) == 2) {
	95	if (s > 0xFFFF)
	96	return (NULL); /* to large, size_t with 2 bytes
	97	* only allows 16 bits */
	98	else
	99	return (realloc(p, (size_t) s));
	100	} else { /* it's not a long, not 2 bytes,
	101	* what is it ??? */
	102	return (realloc(p, (size_t) s));
	103	}
	104	}
	105	}
	106
	107	/* static Visual theVisual = { 0 }; */
	108	Visual *
	109	XDefaultVisual(Display display, Screen screen)
	110	{
	111	return (NULL); /* struct could contain info about
	112	* MONO, GRAY, COLOR */
	113	}
	114
	115	Screen *
	116	XDefaultScreen(Display *d)
	117	{
	118	return (NULL);
	119	}
	120
	121	/* I get only 1 plane but 8 bits per pixel,
	122	so I think BITSPIXEL should be depth
	123
	124	TRS: I assume that all "displays" have the same number of
	125	planes later in the code, which is based on the assumption
	126	that the display variable is ignored below. :)
	127	*/
	128	int
	129	XDefaultDepth(Display display, Screen screen)
	130	{
	131	int d, b;
	132
	133	#if !defined(__VISAGECPP__) /* fisme for OS/2 */
	134	b = GetDeviceCaps(*display, BITSPIXEL);
	135	d = GetDeviceCaps(*display, PLANES);
	136	#endif
	137	return (b);
	138	}
	139
	140	Colormap *
	141	XDefaultColormap(Display display, Screen screen)
	142	{
	143	return (NULL);
	144	}
	145
	146	/* convert hex color names,
	147	wrong digits (not a-f,A-F,0-9) are treated as zero */
	148	static int
	149	hexCharToInt(char c)
	150	{
	151	int r;
	152
	153	if (c >= '0' && c <= '9')
	154	r = c - '0';
	155	else if (c >= 'a' && c <= 'f')
	156	r = c - 'a' + 10;
	157	else if (c >= 'A' && c <= 'F')
	158	r = c - 'A' + 10;
	159	else
	160	r = 0;
	161
	162	return (r);
	163	}
	164
	165	static int
	166	rgbFromHex(char hex, int r, int g, int b)
	167	{
	168	int len;
	169
	170	if (hex == NULL \|\| hex[0] != '#')
	171	return (0);
	172
	173	len = strlen(hex);
	174	if (len == 3 + 1) {
	175	*r = hexCharToInt(hex[1]);
	176	*g = hexCharToInt(hex[2]);
	177	*b = hexCharToInt(hex[3]);
	178	} else if (len == 6 + 1) {
	179	r = hexCharToInt(hex[1]) 16 + hexCharToInt(hex[2]);
	180	g = hexCharToInt(hex[3]) 16 + hexCharToInt(hex[4]);
	181	b = hexCharToInt(hex[5]) 16 + hexCharToInt(hex[6]);
	182	} else if (len == 12 + 1) {
	183	/* it's like c #32329999CCCC */
	184	/* so for now only take two digits */
	185	r = hexCharToInt(hex[1]) 16 + hexCharToInt(hex[2]);
	186	g = hexCharToInt(hex[5]) 16 + hexCharToInt(hex[6]);
	187	b = hexCharToInt(hex[9]) 16 + hexCharToInt(hex[10]);
	188	} else
	189	return (0);
	190
	191	return (1);
	192	}
	193
	194	/* Color related functions */
	195	int
	196	XParseColor(Display d, Colormap cmap, char name, XColor color)
	197	{
	198	int r, g, b; /* only 8 bit values used */
	199	int okay;
	200
	201	/* TODO: use colormap via PALETTE */
	202	/* parse name either in table or #RRGGBB #RGB */
	203	if (name == NULL)
	204	return (0);
	205
	206	if (name[0] == '#') { /* a hex string */
	207	okay = rgbFromHex(name, &r, &g, &b);
	208	} else {
	209	okay = xpmGetRGBfromName(name, &r, &g, &b);
	210	}
	211
	212	if (okay) {
	213	#if !defined(__VISAGECPP__) /* fixme for OS/2 */
	214	color->pixel = RGB(r, g, b);
	215	#endif
	216	color->red = (BYTE) r;
	217	color->green = (BYTE) g;
	218	color->blue = (BYTE) b;
	219	return (1);
	220	} else
	221	return (0); /* --> ColorError */
	222	}
	223
	224
	225	int
	226	XAllocColor(Display d, Colormap cmap, XColor *color)
	227	{
	228	/* colormap not used yet so color->pixel is the real COLORREF (RBG) and not an
	229	index in some colormap as in X */
	230	return (1);
	231	}
	232	void
	233	XQueryColors(Display display, Colormap colormap,
	234	XColor *xcolors, int ncolors)
	235	{
	236	/* under X this fills the rgb values to given .pixel */
	237	/* since there no colormap use FOR_MSW (not yet!!), rgb is plain encoded */
	238	XColor *xc = xcolors;
	239	int i;
	240
	241	#if !defined(__VISAGECPP__) /* fixme for OS/2 */
	242	for (i = 0; i < ncolors; i++, xc++) {
	243	xc->red = GetRValue(xc->pixel);
	244	xc->green = GetGValue(xc->pixel);
	245	xc->blue = GetBValue(xc->pixel);
	246	}
	247	#endif
	248	return;
	249	}
	250	int
	251	XFreeColors(Display *d, Colormap cmap,
	252	unsigned long pixels[], int npixels, unsigned long planes)
	253	{
	254	/* no colormap yet */
	255	return (0); /* correct ??? */
	256	}
	257
	258	/* XImage functions */
	259	XImage *
	260	XCreateImage(Display d, Visual v,
	261	int depth, int format,
	262	int x, int y, int width, int height,
	263	int pad, int foo)
	264	{
	265	XImage img = (XImage ) XpmMalloc(sizeof(XImage));
	266
	267	if (img) {
	268	/* img = CreateCompatibleBitmap(d, width, height); */
	269
	270	#if !defined(__VISAGECPP__) /* fixme for OS/2 */
	271	/* create the bitmap with the same number of planes as the default display
	272	* (otherwise it wouldn't work for 16 color mode) */
	273	img->bitmap = CreateBitmap(width, height,
	274	GetDeviceCaps(*d, PLANES),
	275	depth /* bits per pixel */ , NULL);
	276	#endif
	277	img->width = width;
	278	img->height = height;
	279	img->depth = depth;
	280	}
	281	return (img);
	282
	283	}
	284
	285	void
	286	XImageFree(XImage *img)
	287	{
	288	if (img) {
	289	XpmFree(img);
	290	}
	291	}
	292	void
	293	XDestroyImage(XImage *img)
	294	{
	295	if (img) {
	296	#if !defined(__VISAGECPP__) /* fixme for OS/2 */
	297	DeleteObject(img->bitmap); /* check return ??? */
	298	#endif
	299	XImageFree(img);
	300	}
	301	}
	302
	303	#endif