static XImage *getWindowImage(Display * display, Window window,
int32_t x, int32_t y,
int32_t w, int32_t h) {
XImage *image;
int32_t transparentOverlays;
int32_t numVisuals;
XVisualInfo *pVisuals;
int32_t numOverlayVisuals;
OverlayInfo *pOverlayVisuals;
int32_t numImageVisuals;
XVisualInfo **pImageVisuals;
list_ptr vis_regions; /* list of regions to read from */
list_ptr vis_image_regions ;
int32_t allImage = 0 ;
int32_t format = ZPixmap;
/* prevent user from moving stuff around during the capture */
XGrabServer(display);
/*
* The following two functions live in multiVis.c-- they are pretty
* much verbatim taken from the source to the xwd utility from the
* X11 source. This version of the xwd source was somewhat better written
* for reuse compared to Sun's version.
*
* ftp.x.org/pub/R6.3/xc/programs/xwd
*
* We use these functions since they do the very tough job of capturing
* the screen correctly when it contains multiple visuals. They take into
* account the depth/colormap of each visual and produce a capture as a
* 24-bit RGB image so we don't have to fool around with colormaps etc.
*/
GetMultiVisualRegions(
display,
window,
x, y, w, h,
&transparentOverlays,
&numVisuals,
&pVisuals,
&numOverlayVisuals,
&pOverlayVisuals,
&numImageVisuals,
&pImageVisuals,
&vis_regions,
&vis_image_regions,
&allImage );
image = ReadAreaToImage(
display,
window,
x, y, w, h,
numVisuals,
pVisuals,
numOverlayVisuals,
pOverlayVisuals,
numImageVisuals,
pImageVisuals,
vis_regions,
vis_image_regions,
format,
allImage );
/* allow user to do stuff again */
XUngrabServer(display);
/* make sure the grab/ungrab is flushed */
XSync(display, False);
return image;
}
XImage *
CaptRoot(Display * dpy, int screen)
{
unsigned long swaptest = 1;
XColor *colors;
unsigned buffer_size;
int win_name_size;
int header_size;
int ncolors, i;
char *win_name;
Bool got_win_name;
XWindowAttributes win_info;
XImage *image;
int absx, absy, x, y;
unsigned width, height;
int dwidth, dheight;
int bw;
Window dummywin;
#if 0
int transparentOverlays , multiVis;
int numVisuals;
XVisualInfo *pVisuals;
int numOverlayVisuals;
OverlayInfo *pOverlayVisuals;
int numImageVisuals;
XVisualInfo **pImageVisuals;
list_ptr vis_regions; /* list of regions to read from */
list_ptr vis_image_regions ;
Visual vis_h,*vis ;
#endif
int allImage = 0 ;
Window window=RootWindow (dpy, screen);
if (!XGetWindowAttributes(dpy, window, &win_info))
{ fprintf(stderr,"Can't get target window attributes."); exit(1); }
absx=0; absy=0;
win_info.x = 0;
win_info.y = 0;
width = win_info.width;
height = win_info.height;
bw = 0;
dwidth = DisplayWidth (dpy, screen);
dheight = DisplayHeight (dpy, screen);
XFetchName(dpy, window, &win_name);
if (!win_name || !win_name[0]) {
win_name = "xwdump";
got_win_name = False;
} else {
got_win_name = True;
}
/* sizeof(char) is included for the null string terminator. */
win_name_size = strlen(win_name) + sizeof(char);
/*
* Snarf the pixmap with XGetImage.
*/
x = absx - win_info.x;
y = absy - win_info.y;
#if 0
multiVis = GetMultiVisualRegions(dpy,RootWindow(dpy, screen),absx,absy,
width,height,&transparentOverlays,&numVisuals,&pVisuals,
&numOverlayVisuals,&pOverlayVisuals,&numImageVisuals,
&pImageVisuals,&vis_regions,&vis_image_regions,&allImage) ;
if (on_root || multiVis)
{
if (!multiVis)
image = XGetImage (dpy, RootWindow(dpy, screen), absx, absy,
width, height, AllPlanes, format);
else
image = ReadAreaToImage(dpy, RootWindow(dpy, screen), absx, absy,
width, height,
numVisuals,pVisuals,numOverlayVisuals,pOverlayVisuals,
numImageVisuals, pImageVisuals,vis_regions,
vis_image_regions,format,allImage);
}
else
#endif
image = XGetImage (dpy, window, x, y, width, height,
AllPlanes, format);
if (!image) {
fprintf (stderr, "unable to get image at %dx%d+%d+%d\n",
width, height, x, y);
exit (1);
}
//if (add_pixel_value != 0) XAddPixel (image, add_pixel_value);
return image;
}
