[tests] Adds a flowery clutter_cairo_texture unit test
This is simply a copy of flowers.c from the old clutter-cairo repo
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@ -39,7 +39,8 @@ UNIT_TESTS = \
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test-easing.c \
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test-binding-pool.c \
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test-text.c \
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test-text-field.c
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test-text-field.c \
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test-clutter-cairo-flowers.c
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if X11_TESTS
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UNIT_TESTS += test-pixmap.c
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212
tests/interactive/test-clutter-cairo-flowers.c
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212
tests/interactive/test-clutter-cairo-flowers.c
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@ -0,0 +1,212 @@
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/*
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* Pretty cairo flower hack.
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*/
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#include <clutter/clutter.h>
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#include <unistd.h> /* for sleep(), used for screenshots */
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#include <stdlib.h>
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#include "math.h"
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#define PETAL_MIN 20
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#define PETAL_VAR 40
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#define N_FLOWERS 40 /* reduce if you have a small card */
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typedef struct Flower
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{
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ClutterActor *ctex;
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gint x,y,rot,v,rv;
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}
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Flower;
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ClutterActor*
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make_flower_actor (void)
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{
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/* No science here, just a hack from toying */
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gint i, j;
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double colors[] = {
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0.71, 0.81, 0.83,
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1.0, 0.78, 0.57,
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0.64, 0.30, 0.35,
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0.73, 0.40, 0.39,
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0.91, 0.56, 0.64,
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0.70, 0.47, 0.45,
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0.92, 0.75, 0.60,
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0.82, 0.86, 0.85,
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0.51, 0.56, 0.67,
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1.0, 0.79, 0.58,
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};
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gint size;
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gint petal_size;
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gint n_groups; /* Num groups of petals 1-3 */
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gint n_petals; /* num of petals 4 - 8 */
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gint pm1, pm2;
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gint idx, last_idx = -1;
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ClutterActor *ctex;
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cairo_t *cr;
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petal_size = PETAL_MIN + rand() % PETAL_VAR;
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size = petal_size * 8;
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n_groups = rand() % 3 + 1;
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ctex = clutter_cairo_texture_new (size, size);
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cr = clutter_cairo_texture_create (CLUTTER_CAIRO_TEXTURE (ctex));
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cairo_set_tolerance (cr, 0.1);
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/* Clear */
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cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
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cairo_paint(cr);
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cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
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cairo_translate(cr, size/2, size/2);
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for (i=0; i<n_groups; i++)
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{
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n_petals = rand() % 5 + 4;
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cairo_save (cr);
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cairo_rotate (cr, rand() % 6);
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do {
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idx = (rand() % (sizeof (colors) / sizeof (double) / 3)) * 3;
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} while (idx == last_idx);
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cairo_set_source_rgba (cr, colors[idx], colors[idx+1],
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colors[idx+2], 0.5);
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last_idx = idx;
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/* some bezier randomness */
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pm1 = rand() % 20;
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pm2 = rand() % 4;
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for (j=1; j<n_petals+1; j++)
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{
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cairo_save (cr);
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cairo_rotate (cr, ((2*M_PI)/n_petals)*j);
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/* Petals are made up beziers */
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cairo_new_path (cr);
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cairo_move_to (cr, 0, 0);
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cairo_rel_curve_to (cr,
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petal_size, petal_size,
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(pm2+2)*petal_size, petal_size,
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(2*petal_size) + pm1, 0);
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cairo_rel_curve_to (cr,
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0 + (pm2*petal_size), -petal_size,
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-petal_size, -petal_size,
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-((2*petal_size) + pm1), 0);
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cairo_close_path (cr);
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cairo_fill (cr);
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cairo_restore (cr);
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}
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petal_size -= rand() % (size/8);
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cairo_restore (cr);
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}
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/* Finally draw flower center */
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do {
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idx = (rand() % (sizeof (colors) / sizeof (double) / 3)) * 3;
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} while (idx == last_idx);
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if (petal_size < 0)
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petal_size = rand() % 10;
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cairo_set_source_rgba (cr, colors[idx], colors[idx+1], colors[idx+2], 0.5);
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cairo_arc(cr, 0, 0, petal_size, 0, M_PI * 2);
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cairo_fill(cr);
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cairo_destroy(cr);
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return ctex;
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}
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gboolean
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tick (gpointer data)
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{
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Flower **flowers = (Flower**)data;
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gint i = 0;
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for (i=0; i< N_FLOWERS; i++)
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{
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flowers[i]->y += flowers[i]->v;
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flowers[i]->rot += flowers[i]->rv;
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if (flowers[i]->y > (gint)clutter_actor_get_height
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(clutter_stage_get_default ()))
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flowers[i]->y = -clutter_actor_get_height (flowers[i]->ctex);
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clutter_actor_set_position (flowers[i]->ctex,
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flowers[i]->x, flowers[i]->y);
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clutter_actor_set_rotation (flowers[i]->ctex,
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CLUTTER_Z_AXIS,
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flowers[i]->rot,
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clutter_actor_get_width (flowers[i]->ctex)/2,
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clutter_actor_get_height (flowers[i]->ctex)/2,
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0);
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}
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return TRUE;
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}
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void foo(void) { g_usleep(10000000); }
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int
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test_clutter_cairo_flowers_main (int argc, char **argv)
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{
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int i;
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ClutterActor *stage;
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ClutterColor stage_color = { 0x0, 0x0, 0x0, 0xff };
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Flower *flowers[N_FLOWERS];
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srand(time(NULL));
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clutter_init (&argc, &argv);
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stage = clutter_stage_get_default ();
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clutter_stage_set_color (CLUTTER_STAGE (stage),
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&stage_color);
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g_object_set(stage, "fullscreen", TRUE, NULL);
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for (i=0; i< N_FLOWERS; i++)
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{
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flowers[i] = g_new0(Flower, 1);
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flowers[i]->ctex = make_flower_actor();
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flowers[i]->x = rand() % clutter_actor_get_width(stage)
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- (PETAL_MIN+PETAL_VAR)*2;
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flowers[i]->y = rand() % clutter_actor_get_height(stage);
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flowers[i]->rv = rand() % 5 + 1;
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flowers[i]->v = rand() % 10 + 2;
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clutter_group_add (CLUTTER_GROUP(stage), flowers[i]->ctex);
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clutter_actor_set_position (flowers[i]->ctex,
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flowers[i]->x, flowers[i]->y);
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}
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g_timeout_add (50, tick, flowers);
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clutter_actor_show_all (CLUTTER_ACTOR (stage));
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g_signal_connect (stage, "key-press-event",
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G_CALLBACK (clutter_main_quit),
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NULL);
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clutter_main();
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return 1;
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}
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