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Add a test case for the new cairo path functions

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The nodes of the test path have been reordered because Cairo coalesces
multiple move operations into a single move so the comparison would
fail if the two move nodes are consecutive.
This commit is contained in:
Neil Roberts 2008-12-05 18:37:46 +00:00
parent a462d19e14
commit 965ec27620
1 changed files with 99 additions and 5 deletions
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104
tests/conform/test-path.c
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@ -1,4 +1,5 @@
#include <clutter/clutter.h>
#include <cairo/cairo.h>
#include <string.h>
#include <math.h>
@ -26,16 +27,19 @@ struct _CallbackData
};
static const char path_desc[] =
"M 21 22 m 23 24 "
"L 25 26 l 27 28 "
"C 29 30 31 32 33 34 c 35 36 37 38 39 40 "
"M 21 22 "
"L 25 26 "
"C 29 30 31 32 33 34 "
"m 23 24 "
"l 27 28 "
"c 35 36 37 38 39 40 "
"z";
static const ClutterPathNode path_nodes[] =
{ { CLUTTER_PATH_MOVE_TO, { { 21, 22 }, { 0, 0 }, { 0, 0 } } },
{ CLUTTER_PATH_REL_MOVE_TO, { { 23, 24 }, { 0, 0 }, { 0, 0 } } },
{ CLUTTER_PATH_LINE_TO, { { 25, 26 }, { 0, 0 }, { 0, 0 } } },
{ CLUTTER_PATH_REL_LINE_TO, { { 27, 28 }, { 0, 0 }, { 0, 0 } } },
{ CLUTTER_PATH_CURVE_TO, { { 29, 30 }, { 31, 32 }, { 33, 34 } } },
{ CLUTTER_PATH_REL_MOVE_TO, { { 23, 24 }, { 0, 0 }, { 0, 0 } } },
{ CLUTTER_PATH_REL_LINE_TO, { { 27, 28 }, { 0, 0 }, { 0, 0 } } },
{ CLUTTER_PATH_REL_CURVE_TO, { { 35, 36 }, { 37, 38 }, { 39, 40 } } },
{ CLUTTER_PATH_CLOSE, { { 0, 0 }, { 0, 0 }, { 0, 0 } } } };
@ -391,6 +395,95 @@ path_test_get_description (CallbackData *data)
return ret;
}
static gboolean
path_test_convert_to_cairo_path (CallbackData *data)
{
cairo_surface_t *surface;
cairo_t *cr;
cairo_path_t *cpath;
guint i, j;
ClutterKnot path_start = { 0, 0 }, last_point = { 0, 0 };
/* Create a temporary image surface and context to hold the cairo
path */
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 10, 10);
cr = cairo_create (surface);
/* Convert to a cairo path */
clutter_path_to_cairo_path (data->path, cr);
/* Get a copy of the cairo path data */
cpath = cairo_copy_path (cr);
/* Convert back to a clutter path */
clutter_path_clear (data->path);
clutter_path_add_cairo_path (data->path, cpath);
/* The relative nodes will have been converted to absolute so we
need to reflect this in the node array for comparison */
for (i = 0; i < data->n_nodes; i++)
{
switch (data->nodes[i].type)
{
case CLUTTER_PATH_MOVE_TO:
path_start = last_point = data->nodes[i].points[0];
break;
case CLUTTER_PATH_LINE_TO:
last_point = data->nodes[i].points[0];
break;
case CLUTTER_PATH_CURVE_TO:
last_point = data->nodes[i].points[2];
break;
case CLUTTER_PATH_REL_MOVE_TO:
last_point.x += data->nodes[i].points[0].x;
last_point.y += data->nodes[i].points[0].y;
data->nodes[i].points[0] = last_point;
data->nodes[i].type = CLUTTER_PATH_MOVE_TO;
path_start = last_point;
break;
case CLUTTER_PATH_REL_LINE_TO:
last_point.x += data->nodes[i].points[0].x;
last_point.y += data->nodes[i].points[0].y;
data->nodes[i].points[0] = last_point;
data->nodes[i].type = CLUTTER_PATH_LINE_TO;
break;
case CLUTTER_PATH_REL_CURVE_TO:
for (j = 0; j < 3; j++)
{
data->nodes[i].points[j].x += last_point.x;
data->nodes[i].points[j].y += last_point.y;
}
last_point = data->nodes[i].points[2];
data->nodes[i].type = CLUTTER_PATH_CURVE_TO;
break;
case CLUTTER_PATH_CLOSE:
last_point = path_start;
/* Cairo always adds a move to after every close so we need
to insert one here */
memmove (data->nodes + i + 2, data->nodes + i + 1,
(data->n_nodes - i - 1) * sizeof (ClutterPathNode));
data->nodes[i + 1].type = CLUTTER_PATH_MOVE_TO;
data->nodes[i + 1].points[0] = last_point;
data->n_nodes++;
break;
}
}
/* Free the cairo resources */
cairo_path_destroy (cpath);
cairo_destroy (cr);
cairo_surface_destroy (surface);
return TRUE;
}
static gboolean
float_fuzzy_equals (float fa, float fb)
{
@ -522,6 +615,7 @@ path_tests[] =
{ "Replace a node", path_test_replace },
{ "Set description", path_test_set_description },
{ "Get description", path_test_get_description },
{ "Convert to cairo path and back", path_test_convert_to_cairo_path },
{ "Clear", path_test_clear },
{ "Get position", path_test_get_position },
{ "Check node boxed type", path_test_boxed_type },