#include "cairo-test.h"
#include <stddef.h>
static cairo_test_draw_function_t draw;
static const cairo_test_t test = {
"get-clip",
"Test cairo_copy_clip_rectangle_list and cairo_clip_extents",
0, 0,
draw
};
static cairo_bool_t
check_count (const cairo_test_context_t *ctx,
const char *message, cairo_bool_t uses_clip_rects,
cairo_rectangle_list_t *list, int expected)
{
if (!uses_clip_rects) {
if (expected == 0 && list->num_rectangles == 0)
return 1;
if (list->num_rectangles == expected)
return 1;
if (list->status == CAIRO_STATUS_CLIP_NOT_REPRESENTABLE)
return 1;
cairo_test_log (ctx, "Error: %s; cairo_copy_clip_rectangle_list unexpectedly got %d rectangles\n",
message, list->num_rectangles);
return 0;
}
if (list->status != CAIRO_STATUS_SUCCESS) {
cairo_test_log (ctx, "Error: %s; cairo_copy_clip_rectangle_list failed with \"%s\"\n",
message, cairo_status_to_string(list->status));
return 0;
}
if (list->num_rectangles == expected)
return 1;
cairo_test_log (ctx, "Error: %s; expected %d rectangles, got %d\n", message,
expected, list->num_rectangles);
return 0;
}
static cairo_bool_t
check_unrepresentable (const cairo_test_context_t *ctx, const char *message, cairo_rectangle_list_t *list)
{
if (list->status != CAIRO_STATUS_CLIP_NOT_REPRESENTABLE) {
cairo_test_log (ctx, "Error: %s; cairo_copy_clip_rectangle_list got unexpected result \"%s\"\n"
" (we expected CAIRO_STATUS_CLIP_NOT_REPRESENTABLE)",
message, cairo_status_to_string(list->status));
return 0;
}
return 1;
}
static cairo_bool_t
check_rectangles_contain (const cairo_test_context_t *ctx,
const char *message, cairo_bool_t uses_clip_rects,
cairo_rectangle_list_t *list,
double x, double y, double width, double height)
{
int i;
if (!uses_clip_rects)
return 1;
for (i = 0; i < list->num_rectangles; ++i) {
if (list->rectangles[i].x == x && list->rectangles[i].y == y &&
list->rectangles[i].width == width && list->rectangles[i].height == height)
return 1;
}
cairo_test_log (ctx, "Error: %s; rectangle list does not contain rectangle %f,%f,%f,%f\n",
message, x, y, width, height);
return 0;
}
static cairo_bool_t
check_clip_extents (const cairo_test_context_t *ctx,
const char *message, cairo_t *cr,
double x, double y, double width, double height)
{
double ext_x1, ext_y1, ext_x2, ext_y2;
cairo_clip_extents (cr, &ext_x1, &ext_y1, &ext_x2, &ext_y2);
if (ext_x1 == x && ext_y1 == y && ext_x2 == x + width && ext_y2 == y + height)
return 1;
cairo_test_log (ctx, "Error: %s; clip extents %f,%f,%f,%f should be %f,%f,%f,%f\n",
message, ext_x1, ext_y1, ext_x2 - ext_x1, ext_y2 - ext_y1,
x, y, width, height);
return 0;
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
const cairo_test_context_t *ctx = cairo_test_get_context (cr);
cairo_surface_t *surface;
cairo_t *cr2;
cairo_rectangle_list_t *rectangle_list;
const char *phase;
cairo_bool_t uses_clip_rects;
cairo_status_t status;
surface = cairo_surface_create_similar (cairo_get_group_target (cr),
CAIRO_CONTENT_COLOR, 100, 100);
switch (cairo_surface_get_type (surface)) {
case CAIRO_SURFACE_TYPE_IMAGE:
case CAIRO_SURFACE_TYPE_XLIB:
case CAIRO_SURFACE_TYPE_XCB:
case CAIRO_SURFACE_TYPE_GLITZ:
case CAIRO_SURFACE_TYPE_WIN32:
case CAIRO_SURFACE_TYPE_BEOS:
case CAIRO_SURFACE_TYPE_DIRECTFB:
uses_clip_rects = TRUE;
break;
case CAIRO_SURFACE_TYPE_QUARTZ:
case CAIRO_SURFACE_TYPE_PDF:
case CAIRO_SURFACE_TYPE_PS:
case CAIRO_SURFACE_TYPE_SVG:
case CAIRO_SURFACE_TYPE_OS2:
default:
uses_clip_rects = FALSE;
break;
}
cr = NULL;
cr2 = cairo_create (surface);
cairo_surface_destroy (surface);
phase = "No clip set";
rectangle_list = cairo_copy_clip_rectangle_list (cr2);
if (! check_count (ctx, phase, uses_clip_rects, rectangle_list, 1) ||
! check_clip_extents (ctx, phase, cr2, 0, 0, 100, 100) ||
! check_rectangles_contain (ctx, phase, uses_clip_rects, rectangle_list, 0, 0, 100, 100))
{
goto FAIL;
}
cairo_rectangle_list_destroy (rectangle_list);
phase = "Simple clip rect";
cairo_save (cr2);
cairo_rectangle (cr2, 10, 10, 80, 80);
cairo_clip (cr2);
rectangle_list = cairo_copy_clip_rectangle_list (cr2);
if (! check_count (ctx, phase, uses_clip_rects, rectangle_list, 1) ||
! check_clip_extents (ctx, phase, cr2, 10, 10, 80, 80) ||
! check_rectangles_contain (ctx, phase, uses_clip_rects, rectangle_list, 10, 10, 80, 80))
{
goto FAIL;
}
cairo_rectangle_list_destroy (rectangle_list);
cairo_restore (cr2);
phase = "All clipped out";
cairo_save (cr2);
cairo_clip (cr2);
rectangle_list = cairo_copy_clip_rectangle_list (cr2);
if (! check_count (ctx, phase, uses_clip_rects, rectangle_list, 0))
{
goto FAIL;
}
cairo_rectangle_list_destroy (rectangle_list);
cairo_restore (cr2);
phase = "Two clip rects";
cairo_save (cr2);
cairo_rectangle (cr2, 10, 10, 10, 10);
cairo_rectangle (cr2, 20, 20, 10, 10);
cairo_clip (cr2);
cairo_rectangle (cr2, 15, 15, 10, 10);
cairo_clip (cr2);
rectangle_list = cairo_copy_clip_rectangle_list (cr2);
if (! check_count (ctx, phase, uses_clip_rects, rectangle_list, 2) ||
! check_clip_extents (ctx, phase, cr2, 15, 15, 10, 10) ||
! check_rectangles_contain (ctx, phase, uses_clip_rects, rectangle_list, 15, 15, 5, 5) ||
! check_rectangles_contain (ctx, phase, uses_clip_rects, rectangle_list, 20, 20, 5, 5))
{
goto FAIL;
}
cairo_rectangle_list_destroy (rectangle_list);
cairo_restore (cr2);
phase = "Nonrectangular clip";
cairo_save (cr2);
cairo_move_to (cr2, 0, 0);
cairo_line_to (cr2, 100, 100);
cairo_line_to (cr2, 100, 0);
cairo_close_path (cr2);
cairo_clip (cr2);
rectangle_list = cairo_copy_clip_rectangle_list (cr2);
if (! check_unrepresentable (ctx, phase, rectangle_list) ||
! check_clip_extents (ctx, phase, cr2, 0, 0, 100, 100))
{
goto FAIL;
}
cairo_rectangle_list_destroy (rectangle_list);
cairo_restore (cr2);
phase = "User space, simple scale, getting clip with same transform";
cairo_save (cr2);
cairo_scale (cr2, 2, 2);
cairo_rectangle (cr2, 5, 5, 40, 40);
cairo_clip (cr2);
rectangle_list = cairo_copy_clip_rectangle_list (cr2);
if (! check_count (ctx, phase, uses_clip_rects, rectangle_list, 1) ||
! check_clip_extents (ctx, phase, cr2, 5, 5, 40, 40) ||
! check_rectangles_contain (ctx, phase, uses_clip_rects, rectangle_list, 5, 5, 40, 40))
{
goto FAIL;
}
cairo_rectangle_list_destroy (rectangle_list);
cairo_restore (cr2);
phase = "User space, simple scale, getting clip with no transform";
cairo_save (cr2);
cairo_save (cr2);
cairo_scale (cr2, 2, 2);
cairo_rectangle (cr2, 5, 5, 40, 40);
cairo_restore (cr2);
cairo_clip (cr2);
rectangle_list = cairo_copy_clip_rectangle_list (cr2);
if (! check_count (ctx, phase, uses_clip_rects, rectangle_list, 1) ||
! check_clip_extents (ctx, phase, cr2, 10, 10, 80, 80) ||
! check_rectangles_contain (ctx, phase, uses_clip_rects, rectangle_list, 10, 10, 80, 80))
{
goto FAIL;
}
cairo_rectangle_list_destroy (rectangle_list);
cairo_restore (cr2);
phase = "User space, rotation, getting clip with no transform";
cairo_save (cr2);
cairo_save (cr2);
cairo_rotate (cr2, 12);
cairo_rectangle (cr2, 5, 5, 40, 40);
cairo_restore (cr2);
cairo_clip (cr2);
rectangle_list = cairo_copy_clip_rectangle_list (cr2);
if (! check_unrepresentable (ctx, phase, rectangle_list))
goto FAIL;
FAIL:
cairo_rectangle_list_destroy (rectangle_list);
status = cairo_status (cr2);
cairo_destroy (cr2);
return cairo_test_status_from_status (ctx, status);
}
int
main (void)
{
return cairo_test (&test);
}