Attachment 66071 Details for Bug 54013 – Test case

Test case

54013_test.c (text/plain), 1.91 KB, created by Peter Harris on 2012-08-24 15:30:23 UTC

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Creator: Peter Harris

Created: 2012-08-24 15:30:23 UTC

Size: 1.91 KB

patch

obsolete

>#include <stdio.h>
>#include <stdlib.h>
>#include <unistd.h>
>#include <xcb/xcb.h>
>#include <xcb/xproto.h>
>
>int main(int argc, char *argv[])
>{
>    int screen;
>    xcb_connection_t *c = xcb_connect(NULL, &screen);
>    if (!c || xcb_connection_has_error(c)) {
>	fprintf(stderr, "Cannot open default display \"%s\"\n", getenv("DISPLAY"));
>	return EXIT_FAILURE;
>    }
>
>    // Find root window
>    const xcb_setup_t *setup = xcb_get_setup(c);
>    if (screen >= setup->roots_len)
>	screen = 0;
>    xcb_screen_iterator_t si = xcb_setup_roots_iterator(setup);
>    for (int i=0; i < screen; i++)
>	xcb_screen_next(&si);
>    xcb_window_t root = si.data->root;
>
>    // Create window and gc
>    xcb_window_t window = xcb_generate_id(c);
>    uint32_t list[] = { si.data->black_pixel, XCB_EVENT_MASK_EXPOSURE };
>    xcb_create_window(c, XCB_COPY_FROM_PARENT, window, root, 0, 0, 100, 100,
>	    0, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCB_COPY_FROM_PARENT,
>	    XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK, list);
>    xcb_map_window(c, window);
>
>    xcb_gc_t gc = xcb_generate_id(c);
>    uint32_t gc_list[] = { si.data->white_pixel, 2, XCB_LINE_STYLE_DOUBLE_DASH, XCB_JOIN_STYLE_BEVEL };
>    xcb_create_gc(c, gc, root, 
>	    XCB_GC_FOREGROUND|XCB_GC_LINE_WIDTH|XCB_GC_LINE_STYLE|XCB_GC_JOIN_STYLE, gc_list);
>    uint8_t dashes[] = { 10, 4, 4, 4 };
>    xcb_set_dashes(c, gc, 0, sizeof(dashes)/sizeof(*dashes), dashes);
>
>    // Wait for window to be mapped
>    xcb_flush(c);
>    for (xcb_generic_event_t *ev = xcb_wait_for_event(c); ev; ev = xcb_wait_for_event(c)) {
>	int type = ev->response_type;
>	free(ev);
>	if (type == XCB_EXPOSE)
>	    break;
>    }
>
>    xcb_clear_area(c, 0, window, 0, 0, 0, 0);
>
>    // Draw problematic line
>    xcb_point_t line[] = {
>	{ -851, -1200 },
>	{ -757, -875 },
>	{ -738, -812 },
>	{ -675, -596 },
>    };
>    xcb_poly_line(c, XCB_COORD_MODE_ORIGIN, window, gc, sizeof(line)/sizeof(*line), line);
>    xcb_flush(c);
>    
>    sleep(1);
>
>    return EXIT_SUCCESS;
>}

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Attachments on bug 54013: 66070 | 66071

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