79 lines
1.7 KiB
C
79 lines
1.7 KiB
C
#include <assert.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "pixman.h"
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int
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main ()
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{
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pixman_region32_t r1;
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pixman_region32_t r2;
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pixman_region32_t r3;
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pixman_box32_t boxes[] = {
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{ 10, 10, 20, 20 },
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{ 30, 30, 30, 40 },
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{ 50, 45, 60, 44 },
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};
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pixman_box32_t boxes2[] = {
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{ 2, 6, 7, 6 },
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{ 4, 1, 6, 7 },
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};
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pixman_box32_t boxes3[] = {
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{ 2, 6, 7, 6 },
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{ 4, 1, 6, 1 },
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};
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int i;
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pixman_box32_t *b;
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/* This used to go into an infinite loop before pixman-region.c
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* was fixed to not use explict "short" variables
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*/
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pixman_region32_init_rect (&r1, 0, 0, 20, 64000);
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pixman_region32_init_rect (&r2, 0, 0, 20, 64000);
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pixman_region32_init_rect (&r3, 0, 0, 20, 64000);
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pixman_region32_subtract (&r1, &r2, &r3);
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/* This would produce a region containing an empty
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* rectangle in it. Such regions are considered malformed,
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* but using an empty rectangle for initialization should
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* work.
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*/
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pixman_region32_init_rects (&r1, boxes, 3);
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b = pixman_region32_rectangles (&r1, &i);
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assert (i == 1);
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while (i--)
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{
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assert (b[i].x1 < b[i].x2);
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assert (b[i].y1 < b[i].y2);
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}
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/* This would produce a rectangle containing the bounding box
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* of the two rectangles. The correct result is to eliminate
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* the broken rectangle.
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*/
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pixman_region32_init_rects (&r1, boxes2, 2);
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b = pixman_region32_rectangles (&r1, &i);
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assert (i == 1);
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assert (b[0].x1 == 4);
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assert (b[0].y1 == 1);
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assert (b[0].x2 == 6);
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assert (b[0].y2 == 7);
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/* This should produce an empty region */
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pixman_region32_init_rects (&r1, boxes3, 2);
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b = pixman_region32_rectangles (&r1, &i);
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assert (i == 0);
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return 0;
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}
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