Attachment 127617 Details for Bug 98499 – Example program reproducing the problem

Example program reproducing the problem

reproducer.c (text/x-csrc), 2.90 KB, created by Uli Schlachter on 2016-10-30 10:53:59 UTC

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Creator: Uli Schlachter

Created: 2016-10-30 10:53:59 UTC

Size: 2.90 KB

patch

obsolete

>#include <xcb/xcb.h>
>#include <xcb/xcb_aux.h>
>#include <xcb/shape.h>
>#include <stdlib.h>
>#include <stdio.h>
>
>static xcb_connection_t *c;
>static xcb_screen_t *s;
>static xcb_visualtype_t *argb_visual;
>
>static xcb_visualtype_t *find_argb_visual(void)
>{
>	xcb_depth_iterator_t depth_iter = xcb_screen_allowed_depths_iterator(s);
>
>	for(; depth_iter.rem; xcb_depth_next (&depth_iter))
>		if(depth_iter.data->depth == 32)
>			for(xcb_visualtype_iterator_t visual_iter = xcb_depth_visuals_iterator(depth_iter.data);
>					visual_iter.rem; xcb_visualtype_next (&visual_iter))
>				return visual_iter.data;
>
>    return NULL;
>}
>
>int main(void)
>{
>	xcb_window_t win1, win2;
>	xcb_pixmap_t pixmap;
>	xcb_gcontext_t gc_pixmap;
>	xcb_gcontext_t gc_win;
>	xcb_colormap_t colormap;
>	uint32_t win_flags = XCB_CW_BORDER_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_COLORMAP;
>	uint32_t win_values[3] = {
>		0xff00ff00, /* Yup, I'm evil */
>		1,
>		XCB_NONE
>	};
>
>	c = xcb_connect(NULL, NULL);
>	s = xcb_aux_get_screen(c, 0);
>	argb_visual = find_argb_visual();
>
>	win1 = xcb_generate_id(c);
>	win2 = xcb_generate_id(c);
>	pixmap = xcb_generate_id(c);
>	gc_pixmap = xcb_generate_id(c);
>	gc_win = xcb_generate_id(c);
>	colormap = xcb_generate_id(c);
>	win_values[2] = colormap;
>
>	xcb_create_colormap(c, XCB_COLORMAP_ALLOC_NONE, colormap, s->root, argb_visual->visual_id);
>	xcb_create_window(c, 32, win1, s->root, 10, 10, 100, 100, 0, XCB_COPY_FROM_PARENT, argb_visual->visual_id, win_flags, win_values);
>	xcb_create_window(c, 32, win2, s->root, 210, 10, 100, 100, 0, XCB_COPY_FROM_PARENT, argb_visual->visual_id, win_flags, win_values);
>
>	xcb_map_window(c, win1);
>	xcb_map_window(c, win2);
>
>	xcb_configure_window(c, win1, XCB_CONFIG_WINDOW_BORDER_WIDTH, (uint32_t[]) { 20 });
>	xcb_configure_window(c, win2, XCB_CONFIG_WINDOW_BORDER_WIDTH, (uint32_t[]) { 20 });
>
>	xcb_create_pixmap(c, 1, pixmap, s->root, 140, 140);
>	xcb_create_gc(c, gc_pixmap, pixmap, XCB_GC_FOREGROUND | XCB_GC_BACKGROUND,
>			(uint32_t[]) { s->black_pixel, s->white_pixel });
>	xcb_create_gc(c, gc_win, win1, XCB_GC_FOREGROUND | XCB_GC_BACKGROUND,
>			(uint32_t[]) { s->white_pixel, s->black_pixel });
>	xcb_poly_fill_rectangle(c, pixmap, gc_pixmap, 1, (xcb_rectangle_t[]) { { 0, 0, 140, 140 } });
>	xcb_change_gc(c, gc_pixmap, XCB_GC_FOREGROUND | XCB_GC_BACKGROUND,
>			(uint32_t[]) { s->white_pixel, s->black_pixel });
>	xcb_poly_fill_rectangle(c, pixmap, gc_pixmap, 1, (xcb_rectangle_t[]) { { 0, 20, 140, 100 } });
>	xcb_shape_mask(c, XCB_SHAPE_SO_SET, XCB_SHAPE_SK_BOUNDING, win1, -20, -20, pixmap);
>	xcb_shape_mask(c, XCB_SHAPE_SO_SET, XCB_SHAPE_SK_BOUNDING, win2, -20, -20, pixmap);
>	xcb_flush(c);
>
>	while (1) {
>		xcb_poly_fill_rectangle(c, win1, gc_win, 1, (xcb_rectangle_t[]) { { 0, 0, 140, 140 } });
>		xcb_poly_fill_rectangle(c, win2, gc_win, 1, (xcb_rectangle_t[]) { { 0, 0, 140, 140 } });
>		xcb_flush(c);
>		xcb_generic_event_t *ev = xcb_wait_for_event(c);
>		printf("Got event of type %d\n", ev->response_type);
>		free(ev);
>	}
>
>	return 0;
>}

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Attachments on bug 98499: 127617 | 127618 | 127619 | 128204

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