Hello,
It appears the tiny attached program crashes Xnest if the line
#if 0 /* halve width */
is changed to
#if 1 /* halve width */
Basically then it Xft-paints text beyond 'bounding-area' of XShape.
In contrast, this program doesn't crash Xnest 1.2 and 1.3.
Greetings,
Eeri Kask
P.S. To prove it is XftDrawString8() problem please change
#if 1 /* enable/disable exposures */
to
#if 0 /* enable/disable exposures */
few lines below and rerun.
/*
gcc -o textbitmapshape_bugdemo TextBitmapShape_BugDemo.c -lX11 -lXext -lXft
-L/usr/X11R6/lib -I/usr/X11R6/include -I/usr/X11R6/include/freetype2
*/
#include <X11/Xlib.h>
#include <X11/Xft/Xft.h>
#include <X11/extensions/shape.h>
main (int argc, char **argv)
{
char * str = (argc>1?argv[1]:"Lorem ipsum");
Display * dsp = XOpenDisplay (NULL);
int scr = XDefaultScreen (dsp);
Window win = XCreateSimpleWindow (dsp, XRootWindow (dsp, scr), 5, 5, 300,
100, 3,
XBlackPixel (dsp, scr), XWhitePixel
(dsp, scr));
XRectangle rec;
rec.x = rec.y = 0;
rec.width = 300, rec.height = 100;
#if 0 /* halve width */
rec.width -= 150;
#endif
XShapeCombineRectangles (dsp, win, ShapeBounding, 0, 0, &rec, 1, ShapeSet,
Unsorted);
XftColor xft_col;
XftColorAllocName (dsp, XDefaultVisual (dsp, scr), XDefaultColormap (dsp,
scr), "SeaGreen", &xft_col);
XftFont * font = XftFontOpenName (dsp, scr,
"serif:bold:italic:pixelsize=33");
XftDraw * draw = XftDrawCreate (dsp, win, XDefaultVisual (dsp, scr),
XDefaultColormap (dsp, scr));
XSelectInput (dsp, win, ExposureMask);
XMapWindow (dsp, win);
for (;;)
{
XEvent evt;
XNextEvent (dsp, &evt);
#if 1 /* enable/disable exposures */
if (evt.type == Expose)
XftDrawString8 (draw, &xft_col, font, 20, 60, (XftChar8*)(str),
strlen(str));
#endif
}
}
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