Attachment 27799 Details for Bug 22822 – oops, wrong test.c last time...

oops, wrong test.c last time...

test.c (text/plain), 2.78 KB, created by Joel Bosveld on 2009-07-17 09:50:33 UTC

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Creator: Joel Bosveld

Created: 2009-07-17 09:50:33 UTC

Size: 2.78 KB

patch

obsolete

>/* gcc -o test test.c -Wall -g `pkg-config --cflags --libs x11 cairo-xlib` */
>
>#include <stdlib.h>
>#include <stdio.h>
>#include <unistd.h>
>#include <X11/Xlib.h>
>#include <X11/Xutil.h>
>#include <X11/extensions/Xrender.h>
>#include <cairo-xlib.h>
>
>static Visual
>*findArgbVisual (Display *d)
>{
>    int                 screen = DefaultScreen (d);
>    XVisualInfo		*xvi;
>    XVisualInfo		temp;
>    int			nvi;
>    int			i;
>    XRenderPictFormat	*format;
>    Visual		*visual;
>
>    temp.screen  = screen;
>    temp.depth   = 32;
>    temp.class = TrueColor;
>
>    xvi = XGetVisualInfo (d,
>			  VisualScreenMask |
>			  VisualDepthMask  |
>			  VisualClassMask,
>			  &temp,
>			  &nvi);
>    if (!xvi)
>	return 0;
>
>    visual = 0;
>    for (i = 0; i < nvi; i++)
>    {
>	format = XRenderFindVisualFormat (d, xvi[i].visual);
>	if (format->type == PictTypeDirect && format->direct.alphaMask)
>	{
>	    visual = xvi[i].visual;
>	    break;
>	}
>    }
>
>    XFree (xvi);
>
>    return visual;
>}
>
>int
>main (int argc, char **argv)
>{
>    Display *d;
>    Visual *v;
>    XWindowAttributes wa;
>    Window w, w2;
>    cairo_surface_t *s, *s2;
>    cairo_t *cr;
>
>    d = XOpenDisplay(NULL);
>	if(!d) return 1;
>
>    v = findArgbVisual (d);
>        if(!v) abort ();
>    XSetWindowAttributes attr = {};
>    attr.background_pixel = 0;
>    attr.border_pixel     = 0;
>    attr.colormap	  = XCreateColormap (d, RootWindow(d, 0),
>    					     v, AllocNone);
>
>    w = XCreateWindow(d, RootWindow(d, 0), 0, 0, 1024, 768, 0,
>                            32, InputOutput, v, CWBackPixel | CWBorderPixel | CWColormap, &attr);
>    XMapWindow (d, w);
>    s = cairo_xlib_surface_create (d, w, v, 1024, 768);
>    cr = cairo_create (s);
>
>    if(argc==2) w2 = XCreateWindow(d, RootWindow(d, 0), 0, 0, 100, 100, 0,
>                            32, InputOutput, v, CWBackPixel | CWBorderPixel | CWColormap, &attr);
>    else w2 = XCreateSimpleWindow (d, RootWindow(d, 0), 0, 0, 100, 100, 0, 0, 1234567);
>    XMapWindow (d, w2);
>    XGetWindowAttributes(d, w2, &wa);
>    s2 = cairo_xlib_surface_create (d, w2, wa.visual, wa.width, wa.height);
>    cairo_t *cr2 =  cairo_create (s2);
>    cairo_set_operator (cr2, CAIRO_OPERATOR_SOURCE);
>    cairo_set_source_rgba (cr2, 0.0, 0.0, 1.0, 0.5);
>    cairo_paint (cr2);
>    cairo_destroy (cr2);
>
>    XFlush (d);
>    XSync (d, w);
>
>    while(1)
>{
>    cairo_save (cr);
>    cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
>    cairo_set_source_rgba (cr, 1.0, 0.0, 0.0, 0.5);
>    cairo_paint (cr);
>    cairo_restore (cr);
>
>    cairo_matrix_t m;
>    m.xx = m.yy = 0.5;
>    m.xy = m.yx = 0.0;
>    m.x0 = m.y0 = -32;
>    cairo_pattern_t *p = cairo_pattern_create_for_surface (s2);
>    cairo_pattern_set_matrix (p, &m);
>    cairo_set_source (cr, p);
>    cairo_paint (cr);
>    cairo_pattern_destroy (p);
>    
>    XFlush (d);
>    XSync (d, w);
>    sleep (1);
>}	
>    
>    return 0;
>}

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Attachments on bug 22822: 27792 | 27793 | 27794 | 27796 | 27797 | 27798 | 27799 | 27811

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