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/*
* xvgrab.c - image grabbing (from the display) functions for XV
*
* Author: John Bradley, University of Pennsylvania
* (bradley@cis.upenn.edu)
*
* Contains:
* int Grab() - handles the GRAB command
* int LoadGrab(); - 'loads' the pic from the last succesful Grab
*
*/
/* Copyright Notice
* ================
* Copyright 1989, 1990, 1991, 1992, 1993 by John Bradley
*
* Permission to use, copy, and distribute XV in its entirety, for
* non-commercial purposes, is hereby granted without fee, provided that
* this license information and copyright notice appear in all copies.
*
* Note that distributing XV 'bundled' in with ANY product is considered
* to be a 'commercial purpose'.
*
* Also note that any copies of XV that are distributed MUST be built
* and/or configured to be in their 'unregistered copy' mode, so that it
* is made obvious to the user that XV is shareware, and that they should
* consider donating, or at least reading this License Info.
*
* The software may be modified for your own purposes, but modified
* versions may NOT be distributed without prior consent of the author.
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the author be held liable for any damages
* arising from the use of this software.
*
* If you would like to do something with XV that this copyright
* prohibits (such as distributing it with a commercial product,
* using portions of the source in some other program, etc.), please
* contact the author (preferably via email). Arrangements can
* probably be worked out.
*
* XV is shareware for PERSONAL USE only. You may use XV for your own
* amusement, and if you find it nifty, useful, generally cool, or of
* some value to you, your non-deductable donation would be greatly
* appreciated. $25 is the suggested donation, though, of course,
* larger donations are quite welcome. Folks who donate $25 or more
* can receive a Real Nice bound copy of the XV manual for no extra
* charge.
*
* Commercial, government, and institutional users MUST register their
* copies of XV, for the exceedingly REASONABLE price of just $25 per
* workstation/X terminal. Site licenses are available for those who
* wish to run XV on a large number of machines. Contact the author
* for more details.
*
* The author may be contacted via:
* US Mail: John Bradley
* 1053 Floyd Terrace
* Bryn Mawr, PA 19010
*
* Phone: (215) 898-8813
* EMail: bradley@cis.upenn.edu
*/
#include "xv.h"
static byte *grabPic = (byte *) NULL;
static int gbits; /* either '8' or '24' */
static byte grabmapR[256], grabmapG[256], grabmapB[256]; /* colormap */
static int gWIDE,gHIGH;
static GC rootGC;
/* local function definitions */
#ifdef __STDC__
static void flashrect(int, int, int, int, int);
static void startflash();
static void endflash();
static int grabImage(Window, int, int, int, int);
static void ungrabX(void);
static int convertImage(XImage *, XColor *, int, XWindowAttributes *);
static int lowbit(unsigned long);
static int getxcolors(XWindowAttributes *, XColor **);
static Window xvClientWindow(Display *, Window);
#else
static void flashrect(), startflash(), endflash(), ungrabX();
static int grabImage(), convertImage(), lowbit(), getxcolors();
static Window xvClientWindow();
#endif
#define GRAB_BUTTON
/***********************************/
int Grab()
{
/* does UI part of Grab command. returns '1' on success */
int i,x,y,x1,y1,x2,y2, ix, iy, iw, ih;
Window rW,cW, clickWin, tmpwin;
int rx,ry;
unsigned int mask;
if (grabDelay>0) sleep(grabDelay);
rootGC = DefaultGC(theDisp, theScreen);
/* throw away previous 'grabbed' pic, if there is one */
if (grabPic) { free(grabPic); grabPic = (byte *) NULL; }
{
XColor fc, bc;
fc.flags = bc.flags = DoRed | DoGreen | DoBlue;
fc.red = fc.green = fc.blue = 0xffff;
bc.red = bc.green = bc.blue = 0x0000;
XRecolorCursor(theDisp, tcross, &fc, &bc);
}
#ifdef GRAB_BUTTON
XGrabButton(theDisp, AnyButton, 0, rootW, False, 0L, GrabModeAsync,
GrabModeSync, None, tcross);
#else
i = XGrabPointer(theDisp, rootW, False, 0L, GrabModeAsync, GrabModeSync,
None, tcross, CurrentTime);
#endif
XBell(theDisp, 0); /* beep once at start of grab */
if (DEBUG>1) fprintf(stderr,"pointer grabbed\n");
/* wait for a button press */
while (1) {
if (XQueryPointer(theDisp,rootW,&rW,&cW,&rx,&ry,&x1,&y1,&mask)) {
if (mask & (Button1Mask | Button2Mask | Button3Mask)) break;
}
}
if (DEBUG>1) fprintf(stderr,"got button click\n");
if (mask & Button3Mask || rW!=rootW) { /* Button3: CANCEL GRAB */
while (1) { /* wait for button to be released */
if (XQueryPointer(theDisp,rootW,&rW,&cW,&rx,&ry,&x1,&y1,&mask)) {
if (!(mask & Button3Mask)) break;
}
}
#ifdef GRAB_BUTTON
XUngrabButton(theDisp, AnyButton, 0, rootW);
#else
XUngrabPointer(theDisp, CurrentTime);
#endif
XBell(theDisp, 0);
XBell(theDisp, 0);
return 0;
}
if (mask & Button1Mask) { /* Button1: GRAB WINDOW (& FRAME, maybe) */
while (1) { /* wait for button to be released */
int rx,ry,x1,y1; Window rW, cW;
if (XQueryPointer(theDisp,rootW,&rW,&cW,&rx,&ry,&x1,&y1,&mask)) {
if (!(mask & Button1Mask)) break;
}
}
if (!cW || cW == rootW) clickWin = rootW;
else {
int xr, yr; Window chwin;
XTranslateCoordinates(theDisp, rW, cW, rx, ry, &xr, &yr, &chwin);
if (chwin != None) {
XWindowAttributes clickxwa, parentxwa;
clickWin = xvClientWindow(theDisp, chwin);
/* decide if we want to just grab clickWin, or cW.
basically, if they're different in any important way
(depth, visual, colormap), grab 'clickWin' only,
as it's the important part */
if (!clickWin ||
(XGetWindowAttributes(theDisp, clickWin, &clickxwa) &&
XGetWindowAttributes(theDisp, cW, &parentxwa) &&
clickxwa.visual->class == parentxwa.visual->class &&
clickxwa.colormap == parentxwa.colormap &&
clickxwa.depth == parentxwa.depth)
)
clickWin = cW; /* close enough! */
}
if (DEBUG)
fprintf(stderr, "rW = %x, cW = %x, chwin = %x, clickWin = %x\n",
rW, cW, chwin, clickWin);
}
if (clickWin == rootW) { /* grab entire screen */
if (DEBUG) fprintf(stderr,"Grab: clicked on root window.\n");
ix = iy = 0; iw = dispWIDE; ih = dispHIGH;
}
else {
int x,y,bwr,dr; Window win;
if (XGetGeometry(theDisp,clickWin,&rW, &x, &y, &iw, &ih, &bwr, &dr)) {
XTranslateCoordinates(theDisp, clickWin, rootW, 0, 0, &ix,&iy, &win);
if (DEBUG) fprintf(stderr,"clickWin=0x%x: %d,%d %dx%d depth=%d\n",
clickWin, ix, iy, iw, ih, dr);
}
else {
ix = iy = 0; iw = dispWIDE; ih = dispHIGH; clickWin = rootW;
if (DEBUG) fprintf(stderr,"XGetGeometry failed? (using root win)\n");
}
}
/* range checking: keep rectangle fully on-screen */
if (ix<0) { iw += ix; ix = 0; }
if (iy<0) { ih += iy; iy = 0; }
if (ix+iw>dispWIDE) iw = dispWIDE-ix;
if (iy+ih>dispHIGH) ih = dispHIGH-iy;
if (DEBUG) fprintf(stderr,"using %d,%d (%dx%d)\n", ix, iy, iw, ih);
/* flash the rectangle a bit... */
startflash();
for (i=0; i<5; i++) {
flashrect(ix, iy, iw, ih, 1);
XFlush(theDisp); Timer(100);
flashrect(ix, iy, iw, ih, 0);
XFlush(theDisp); Timer(100);
}
endflash();
}
else { /* Button2: TRACK A RECTANGLE */
int origrx, origry;
Window origcW;
clickWin = rootW; origcW = cW;
origrx = ix = x2 = rx;
origry = iy = y2 = ry;
iw = ih = 0;
XGrabServer(theDisp);
startflash();
/* Wait for button release while tracking rectangle on screen */
while (1) {
if (XQueryPointer(theDisp,rootW,&rW,&cW,&rx,&ry,&x,&y,&mask)) {
if (!(mask & Button2Mask)) break;
}
flashrect(ix, iy, iw, ih, 0); /* turn off rect */
if (rx!=x2 || ry!=y2) { /* move rectangle */
ix = (x1<rx) ? x1 : rx;
iy = (y1<ry) ? y1 : ry;
iw = abs(rx - x1); ih = abs(ry - y1);
x2 = rx; y2 = ry;
}
if (iw>1 && ih>1)
flashrect(ix, iy, iw, ih, 1); /* turn on rect */
}
flashrect(ix, iy, iw, ih, 0); /* turn off rect */
endflash();
XUngrabServer(theDisp);
if (origcW == cW) { /* maybe it's entirely in one window??? */
Window stwin, enwin, stwin1, enwin1;
if (DEBUG) fprintf(stderr,"origcW=%x cW=%x ", origcW, cW);
XTranslateCoordinates(theDisp,rootW,cW, origrx,origry,&x,&y,&stwin);
XTranslateCoordinates(theDisp,rootW,cW, rx, ry, &x,&y,&enwin);
if (DEBUG) fprintf(stderr,"stwin=%x enwin=%x ", stwin, enwin);
if (stwin == enwin && stwin != None) {
stwin1 = xvClientWindow(theDisp, stwin);
enwin1 = xvClientWindow(theDisp, enwin);
if (DEBUG) fprintf(stderr,"stwin1=%x enwin1=%x ", stwin1, enwin1);
if (stwin1 == enwin1 && stwin1) clickWin = stwin1;
else clickWin = stwin;
}
}
if (DEBUG) fprintf(stderr,"\n");
}
WaitCursor();
XGrabServer(theDisp); /* until we've done the grabImage */
if (DEBUG>1)
fprintf(stderr,"grabbing %dx%d region, at %d,%d\n", iw, ih, ix, iy);
i = grabImage(clickWin, ix, iy, iw, ih); /* ungrabs the server & button */
SetCursors(-1);
return i;
}
/***********************************/
static void flashrect(x,y,w,h,show)
int x,y,w,h,show;
{
static int isvis = 0;
static int maskno = 0;
static unsigned long masks[8] = { 0x01010101,
0x02020203,
0x04040405,
0x08080809,
0x10101011,
0x20202021,
0x40404041,
0x80808081 };
XSetPlaneMask(theDisp, rootGC, masks[maskno]);
if (!show) { /* turn off rectangle */
if (isvis) XDrawRectangle(theDisp, rootW, rootGC, x, y, w-1, h-1);
isvis = 0;
}
else { /* show rectangle */
if (!isvis && w>1 && h>1) {
maskno = (maskno + 1) & 7;
XSetPlaneMask(theDisp, rootGC, masks[maskno]);
XDrawRectangle(theDisp, rootW, rootGC, x, y, w-1, h-1);
isvis = 1;
}
}
}
/***********************************/
static void startflash()
{
/* set up for drawing a flashing rectangle */
XSetFunction(theDisp, rootGC, GXinvert);
XSetSubwindowMode(theDisp, rootGC, IncludeInferiors);
}
/***********************************/
static void endflash()
{
XSetFunction(theDisp, rootGC, GXcopy);
XSetSubwindowMode(theDisp, rootGC, ClipByChildren);
XSetPlaneMask(theDisp, rootGC, AllPlanes);
XSync(theDisp, False);
}
/***********************************/
static int grabImage(clickWin, x, y, w, h)
Window clickWin;
int x, y, w, h;
{
/* attempts to grab the specified rectangle of the root window
returns '1' on success. clickWin is used to figure out the depth
and colormap to use */
XImage *image;
XWindowAttributes xwa;
XColor *colors;
int ncolors, i, ix, iy;
char str[256];
Window win;
/* range checking */
if (x<0) { w += x; x = 0; }
if (y<0) { h += y; y = 0; }
if (x+w>dispWIDE) w = dispWIDE-x;
if (y+h>dispHIGH) h = dispHIGH-y;
if (w==0 || h==0) { /* selected nothing */
ungrabX();
return 0;
}
if (!XGetWindowAttributes(theDisp, clickWin, &xwa)) {
sprintf(str,"Unable to get window attributes for clicked-on window\n");
ungrabX();
ErrPopUp(str, "\nThat Sucks!");
return 0;
}
XTranslateCoordinates(theDisp, rootW, clickWin, x, y, &ix, &iy, &win);
image = XGetImage(theDisp, clickWin, ix, iy, w, h, AllPlanes, ZPixmap);
if (!image || !image->data) {
sprintf(str, "Unable to get image (%d,%d %dx%d) from display", ix,iy,w,h);
ungrabX();
ErrPopUp(str, "\nThat Sucks!");
return 0;
}
ncolors = getxcolors(&xwa, &colors);
ungrabX();
if (ncolors && DEBUG) {
fprintf(stderr, "Colormap:\n");
for (i=0; i<ncolors; i++)
fprintf(stderr,"%02x%02x%02x ",colors[i].red>>8, colors[i].green>>8,
colors[i].blue>>8);
fprintf(stderr,"\n");
}
XBell(theDisp, 0); /* beep twice at end of grab */
XBell(theDisp, 0);
i = convertImage(image, colors, ncolors, &xwa);
xvDestroyImage(image);
free((char *) colors);
return i;
}
static void ungrabX()
{
XUngrabServer(theDisp);
#ifdef GRAB_BUTTON
XUngrabButton(theDisp, AnyButton, 0, rootW);
#else
XUngrabPointer(theDisp, CurrentTime);
#endif
}
union swapun {
CARD32 l;
CARD16 s;
CARD8 b[sizeof(CARD32)];
};
/**************************************/
static int convertImage(image, colors, ncolors, xwap)
XImage *image;
XColor *colors;
int ncolors;
XWindowAttributes *xwap;
{
/* attempts to conver the image from whatever weird-ass format it might
be in into something E-Z to deal with (either an 8-bit colormapped
image, or a 24-bit image). Returns '1' on success. */
/* this code owes a lot to 'xwdtopnm.c', part of the pbmplus package,
written by Jef Poskanzer */
int i, j;
CARD8 *bptr, tmpbyte;
CARD16 *sptr, sval;
CARD32 *lptr, lval;
CARD8 *pptr, *lineptr;
int bits_used, bits_per_item, bit_shift, bit_order;
int bits_per_pixel, byte_order;
CARD32 pixvalue, pixmask, rmask, gmask, bmask;
int rshift, gshift, bshift, r8shift, g8shift, b8shift;
CARD32 rval, gval, bval;
union swapun sw;
int isLsbMachine, flipBytes;
Visual *visual;
char errstr[256];
static char *foo[] = { "\nThat Sucks!" };
/* determine byte order of the machine we're running on */
sw.l = 1;
isLsbMachine = (sw.b[0]) ? 1 : 0;
if (xwap && xwap->visual) visual = xwap->visual;
else visual = theVisual;
if (DEBUG) {
fprintf(stderr,"convertImage:\n");
fprintf(stderr," %dx%d (offset %d), %s\n",
image->width, image->height, image->xoffset,
(image->format == XYBitmap || image->format == XYPixmap)
? "XYPixmap" : "ZPixmap");
fprintf(stderr,"byte_order = %s, bitmap_bit_order = %s, unit=%d, pad=%d\n",
(image->byte_order == LSBFirst) ? "LSBFirst" : "MSBFirst",
(image->bitmap_bit_order == LSBFirst) ? "LSBFirst" : "MSBFirst",
image->bitmap_unit, image->bitmap_pad);
fprintf(stderr,"depth = %d, bperline = %d, bits_per_pixel = %d\n",
image->depth, image->bytes_per_line, image->bits_per_pixel);
fprintf(stderr,"masks: red %lx green %lx blue %lx\n",
image->red_mask, image->green_mask, image->blue_mask);
if (isLsbMachine) fprintf(stderr,"This looks like an lsbfirst machine\n");
else fprintf(stderr,"This looks like an msbfirst machine\n");
}
if (image->bitmap_unit != 8 && image->bitmap_unit != 16 &&
image->bitmap_unit != 32) {
sprintf(errstr, "%s\nReturned image bitmap_unit (%d) non-standard.",
"Can't deal with this display.", image->bitmap_unit);
ErrPopUp(errstr, "\nThat Sucks!");
return 0;
}
if (!ncolors && visual->class != TrueColor) {
sprintf(errstr, "%s\nOnly TrueColor displays can have no colormap.",
"Can't deal with this display.");
ErrPopUp(errstr, "\nThat Sucks!");
return 0;
}
/* build the 'global' grabPic stuff */
gWIDE = image->width; gHIGH = image->height;
if (visual->class == TrueColor || visual->class == DirectColor ||
ncolors > 256) {
grabPic = (byte *) malloc(gWIDE * gHIGH * 3);
gbits = 24;
}
else {
grabPic = (byte *) malloc(gWIDE * gHIGH);
gbits = 8;
/* load up the colormap */
for (i=0; i<ncolors; i++) {
grabmapR[i] = colors[i].red >> 8;
grabmapG[i] = colors[i].green >> 8;
grabmapB[i] = colors[i].blue >> 8;
}
}
if (!grabPic) FatalError("unable to malloc grabPic in convertImage()");
pptr = grabPic;
if (visual->class == TrueColor || visual->class == DirectColor) {
unsigned int tmp;
/* compute various shifty constants we'll need */
rmask = image->red_mask;
gmask = image->green_mask;
bmask = image->blue_mask;
rshift = lowbit(rmask);
gshift = lowbit(gmask);
bshift = lowbit(bmask);
r8shift = 0; tmp = rmask >> rshift;
while (tmp >= 256) { tmp >>= 1; r8shift -= 1; }
while (tmp < 128) { tmp <<= 1; r8shift += 1; }
g8shift = 0; tmp = gmask >> gshift;
while (tmp >= 256) { tmp >>= 1; g8shift -= 1; }
while (tmp < 128) { tmp <<= 1; g8shift += 1; }
b8shift = 0; tmp = bmask >> bshift;
while (tmp >= 256) { tmp >>= 1; b8shift -= 1; }
while (tmp < 128) { tmp <<= 1; b8shift += 1; }
if (DEBUG)
fprintf(stderr,"True/DirectColor: shifts=%d,%d,%d 8shifts=%d,%d,%d\n",
rshift, gshift, bshift, r8shift, g8shift, b8shift);
}
bits_per_item = image->bitmap_unit;
bits_used = bits_per_item;
bits_per_pixel = image->bits_per_pixel;
if (bits_per_pixel == 32) pixmask = 0xffffffff;
else pixmask = (((CARD32) 1) << bits_per_pixel) - 1;
bit_order = image->bitmap_bit_order;
byte_order = image->byte_order;
/* if we're on an lsbfirst machine, or the image came from an lsbfirst
machine, we should flip the bytes around. NOTE: if we're on an
lsbfirst machine *and* the image came from an lsbfirst machine,
*don't* flip bytes, as it should work out */
/* pity we don't have a logical exclusive-or */
flipBytes = ( isLsbMachine && byte_order != LSBFirst) ||
(!isLsbMachine && byte_order == LSBFirst);
for (i=0; i<image->height; i++) {
lineptr = (byte *) image->data + (i * image->bytes_per_line);
bptr = ((CARD8 *) lineptr) - 1;
sptr = ((CARD16 *) lineptr) - 1;
lptr = ((CARD32 *) lineptr) - 1;
bits_used = bits_per_item;
for (j=0; j<image->width; j++) {
/* get the next pixel value from the image data */
if (bits_used == bits_per_item) { /* time to move on to next b/s/l */
switch (bits_per_item) {
case 8: bptr++; break;
case 16: sptr++; sval = *sptr;
if (flipBytes) { /* swap CARD16 */
sw.s = sval;
tmpbyte = sw.b[0];
sw.b[0] = sw.b[1];
sw.b[1] = tmpbyte;
sval = sw.s;
}
break;
case 32: lptr++; lval = *lptr;
if (flipBytes) { /* swap CARD32 */
sw.l = lval;
tmpbyte = sw.b[0];
sw.b[0] = sw.b[3];
sw.b[3] = tmpbyte;
tmpbyte = sw.b[1];
sw.b[1] = sw.b[2];
sw.b[2] = tmpbyte;
lval = sw.l;
}
break;
}
bits_used = 0;
if (bit_order == MSBFirst) bit_shift = bits_per_item - bits_per_pixel;
else bit_shift = 0;
}
switch (bits_per_item) {
case 8: pixvalue = (*bptr >> bit_shift) & pixmask; break;
case 16: pixvalue = ( sval >> bit_shift) & pixmask; break;
case 32: pixvalue = ( lval >> bit_shift) & pixmask; break;
}
if (bit_order == MSBFirst) bit_shift -= bits_per_pixel;
else bit_shift += bits_per_pixel;
bits_used += bits_per_pixel;
/* okay, we've got the next pixel value in 'pixvalue' */
if (visual->class == TrueColor || visual->class == DirectColor) {
/* in either case, we have to take the pixvalue and
break it out into individual r,g,b components */
rval = (pixvalue & rmask) >> rshift;
gval = (pixvalue & gmask) >> gshift;
bval = (pixvalue & bmask) >> bshift;
if (visual->class == DirectColor) {
/* use rval, gval, bval as indicies into colors array */
*pptr++ = (rval < ncolors) ? (colors[rval].red >> 8) : 0;
*pptr++ = (gval < ncolors) ? (colors[gval].green >> 8) : 0;
*pptr++ = (bval < ncolors) ? (colors[bval].blue >> 8) : 0;
}
else { /* TrueColor */
/* have to map rval,gval,bval into 0-255 range */
*pptr++ = (r8shift >= 0) ? (rval << r8shift) : (rval >> (-r8shift));
*pptr++ = (g8shift >= 0) ? (gval << g8shift) : (gval >> (-g8shift));
*pptr++ = (b8shift >= 0) ? (bval << b8shift) : (bval >> (-b8shift));
}
}
else { /* all others: StaticGray, StaticColor, GrayScale, PseudoColor */
/* use pixel value as an index into colors array */
if (pixvalue >= ncolors) {
FatalError("convertImage(): pixvalue >= ncolors");
}
if (gbits == 24) { /* too many colors for 8-bit colormap */
*pptr++ = (colors[pixvalue].red) >> 8;
*pptr++ = (colors[pixvalue].green) >> 8;
*pptr++ = (colors[pixvalue].blue) >> 8;
}
else *pptr++ = pixvalue & 0xff;
}
}
}
return 1;
}
/**************************************/
static int lowbit(ul)
unsigned long ul;
{
/* returns position of lowest set bit in 'ul' as an integer (0-31),
or -1 if none */
int i;
for (i=0; ((ul&1) == 0) && i<32; i++, ul>>=1);
if (i==32) i = -1;
return i;
}
/**************************************/
/* following code snarfed from 'xwd.c' */
/**************************************/
#define lowbit(x) ((x) & (~(x) + 1))
static int getxcolors(win_info, colors)
XWindowAttributes *win_info;
XColor **colors;
{
int i, ncolors;
Colormap cmap;
if (win_info->visual->class == TrueColor) {
if (DEBUG) fprintf(stderr,"TrueColor visual: no colormap needed\n");
return 0;
}
else if (!win_info->colormap) {
if (DEBUG) fprintf(stderr,"no colormap associated with window\n");
return 0;
}
ncolors = win_info->visual->map_entries;
if (DEBUG) fprintf(stderr,"%d entries in colormap\n", ncolors);
if (!(*colors = (XColor *) malloc (sizeof(XColor) * ncolors)))
FatalError("malloc failed in getxcolors()");
if (win_info->visual->class == DirectColor) {
Pixel red, green, blue, red1, green1, blue1;
if (DEBUG) fprintf(stderr,"DirectColor visual\n");
red = green = blue = 0;
red1 = lowbit(win_info->visual->red_mask);
green1 = lowbit(win_info->visual->green_mask);
blue1 = lowbit(win_info->visual->blue_mask);
for (i=0; i<ncolors; i++) {
(*colors)[i].pixel = red|green|blue;
(*colors)[i].pad = 0;
red += red1;
if (red > win_info->visual->red_mask) red = 0;
green += green1;
if (green > win_info->visual->green_mask) green = 0;
blue += blue1;
if (blue > win_info->visual->blue_mask) blue = 0;
}
}
else {
for (i=0; i<ncolors; i++) {
(*colors)[i].pixel = i;
(*colors)[i].pad = 0;
}
}
XQueryColors(theDisp, win_info->colormap, *colors, ncolors);
return(ncolors);
}
/***********************************/
int LoadGrab(pinfo)
PICINFO *pinfo;
{
/* loads up (into XV structures) last image successfully grabbed.
returns '0' on failure, '1' on success */
int i;
if (!grabPic) return 0; /* no image to use */
if (gbits == 24) pinfo->type = PIC24;
else {
pinfo->type = PIC8;
for (i=0; i<256; i++) {
pinfo->r[i] = grabmapR[i];
pinfo->g[i] = grabmapG[i];
pinfo->b[i] = grabmapB[i];
}
}
pinfo->pic = grabPic;
pinfo->w = gWIDE;
pinfo->h = gHIGH;
pinfo->frmType = -1;
pinfo->colType = -1;
sprintf(pinfo->fullInfo,"<internal>");
sprintf(pinfo->shrtInfo,"%dx%d internal image.",gWIDE, gHIGH);
pinfo->comment = (char *) NULL;
grabPic = (byte *) NULL;
return 1;
}
#include <X11/Xlib.h>
#include <X11/Xatom.h>
static Window TryChildren();
/* Find a window with WM_STATE, else return '0' */
static Window xvClientWindow (dpy, win)
Display *dpy;
Window win;
{
Atom WM_STATE;
Atom type = None;
int format;
unsigned long nitems, after;
unsigned char *data;
Window inf;
WM_STATE = XInternAtom(dpy, "WM_STATE", True);
if (!WM_STATE) return win;
XGetWindowProperty(dpy, win, WM_STATE, 0, 0, False, AnyPropertyType,
&type, &format, &nitems, &after, &data);
if (type) return win;
inf = TryChildren(dpy, win, WM_STATE);
return inf;
}
static Window TryChildren (dpy, win, WM_STATE)
Display *dpy;
Window win;
Atom WM_STATE;
{
Window root, parent;
Window *children;
unsigned int nchildren;
unsigned int i;
Atom type = None;
int format;
unsigned long nitems, after;
unsigned char *data;
Window inf = 0;
if (!XQueryTree(dpy, win, &root, &parent, &children, &nchildren))
return 0;
for (i = 0; !inf && (i < nchildren); i++) {
XGetWindowProperty(dpy, children[i], WM_STATE, 0, 0, False,
AnyPropertyType, &type, &format, &nitems,
&after, &data);
if (type)
inf = children[i];
}
for (i = 0; !inf && (i < nchildren); i++)
inf = TryChildren(dpy, children[i], WM_STATE);
if (children) XFree((char *)children);
return inf;
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.