Initial revisionXORG-STABLE

1 files changed, 290 insertions, 0 deletions

diff --git a/src/simx.c b/src/simx.c
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+/*
+ * Copyright (C) 1989-95 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)                           *
+\*****************************************************************************/
+
+#ifdef FOR_MSW
+
+#include "xpm.h"
+#include "xpmi.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 */
+int 
+XDefaultDepth(Display *display, Screen *screen)
+{
+    int d, b;
+
+    b = GetDeviceCaps(*display, BITSPIXEL);
+    d = GetDeviceCaps(*display, PLANES);
+    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(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) {
+	color->pixel = RGB(r, g, b);
+	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;
+
+    for (i = 0; i < ncolors; i++, xc++) {
+	xc->red = GetRValue(xc->pixel);
+	xc->green = GetGValue(xc->pixel);
+	xc->blue = GetBValue(xc->pixel);
+    }
+    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) {
+	/*JW: This is what it should be, but the picture comes out
+	      just black!?  It appears to be doing monochrome reduction,
+	      but I've got no clue why.  Using CreateBitmap() is supposed
+	      to be slower, but otherwise ok
+	  if ( depth == GetDeviceCaps(*d, BITSPIXEL) ) {
+	    img->bitmap = CreateCompatibleBitmap(*d, width, height);
+        } else*/ {
+	    img->bitmap = CreateBitmap(width, height, 1 /* plane */ ,
+				       depth /* bits per pixel */ , NULL);
+	}
+	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) {
+	DeleteObject(img->bitmap);	/* check return ??? */
+	XImageFree(img);
+    }
+}
+
+#endif