mutter/tests/interactive/test-bin-layout.c

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#include <stdlib.h>
#include <gmodule.h>
#include <cairo/cairo.h>
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#include <clutter/clutter.h>
static ClutterActor *
make_background (const ClutterColor *color,
gfloat width,
gfloat height)
{
ClutterActor *tex = clutter_cairo_texture_new (width, height);
cairo_t *cr = clutter_cairo_texture_create (CLUTTER_CAIRO_TEXTURE (tex));
cairo_pattern_t *pat;
gfloat x, y;
#define BG_ROUND_RADIUS 12
x = y = 0;
cairo_move_to (cr, BG_ROUND_RADIUS, y);
cairo_line_to (cr, width - BG_ROUND_RADIUS, y);
cairo_curve_to (cr, width, y, width, y, width, BG_ROUND_RADIUS);
cairo_line_to (cr, width, height - BG_ROUND_RADIUS);
cairo_curve_to (cr, width, height, width, height, width - BG_ROUND_RADIUS, height);
cairo_line_to (cr, BG_ROUND_RADIUS, height);
cairo_curve_to (cr, x, height, x, height, x, height - BG_ROUND_RADIUS);
cairo_line_to (cr, x, BG_ROUND_RADIUS);
cairo_curve_to (cr, x, y, x, y, BG_ROUND_RADIUS, y);
cairo_close_path (cr);
clutter_cairo_set_source_color (cr, color);
cairo_stroke (cr);
x += 4;
y += 4;
width -= 4;
height -= 4;
cairo_move_to (cr, BG_ROUND_RADIUS, y);
cairo_line_to (cr, width - BG_ROUND_RADIUS, y);
cairo_curve_to (cr, width, y, width, y, width, BG_ROUND_RADIUS);
cairo_line_to (cr, width, height - BG_ROUND_RADIUS);
cairo_curve_to (cr, width, height, width, height, width - BG_ROUND_RADIUS, height);
cairo_line_to (cr, BG_ROUND_RADIUS, height);
cairo_curve_to (cr, x, height, x, height, x, height - BG_ROUND_RADIUS);
cairo_line_to (cr, x, BG_ROUND_RADIUS);
cairo_curve_to (cr, x, y, x, y, BG_ROUND_RADIUS, y);
cairo_close_path (cr);
pat = cairo_pattern_create_linear (0, 0, 0, height);
cairo_pattern_add_color_stop_rgba (pat, 1, .85, .85, .85, 1);
cairo_pattern_add_color_stop_rgba (pat, .95, 1, 1, 1, 1);
cairo_pattern_add_color_stop_rgba (pat, .05, 1, 1, 1, 1);
cairo_pattern_add_color_stop_rgba (pat, 0, .85, .85, .85, 1);
cairo_set_source (cr, pat);
cairo_fill (cr);
cairo_pattern_destroy (pat);
cairo_destroy (cr);
#undef BG_ROUND_RADIUS
return tex;
}
static gboolean
on_box_enter (ClutterActor *box,
ClutterEvent *event,
ClutterActor *emblem)
{
clutter_actor_animate (emblem, CLUTTER_LINEAR, 150,
"opacity", 255,
NULL);
return TRUE;
}
static gboolean
on_box_leave (ClutterActor *box,
ClutterEvent *event,
ClutterActor *emblem)
{
clutter_actor_animate (emblem, CLUTTER_LINEAR, 150,
"opacity", 0,
NULL);
return TRUE;
}
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G_MODULE_EXPORT int
test_bin_layout_main (int argc, char *argv[])
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{
ClutterActor *stage, *box, *rect;
ClutterLayoutManager *layout;
ClutterColor stage_color = { 0xe0, 0xf2, 0xfc, 0xff };
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ClutterColor bg_color = { 0xcc, 0xcc, 0xcc, 0x99 };
ClutterColor *color;
clutter_init (&argc, &argv);
stage = clutter_stage_get_default ();
clutter_stage_set_title (CLUTTER_STAGE (stage), "Box test");
clutter_stage_set_color (CLUTTER_STAGE (stage), &stage_color);
clutter_actor_set_size (stage, 640, 480);
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layout = clutter_bin_layout_new (CLUTTER_BIN_ALIGNMENT_CENTER,
CLUTTER_BIN_ALIGNMENT_CENTER);
box = clutter_box_new (layout);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), box);
clutter_actor_set_anchor_point_from_gravity (box, CLUTTER_GRAVITY_CENTER);
clutter_actor_set_position (box, 320, 240);
clutter_actor_set_reactive (box, TRUE);
clutter_actor_set_name (box, "box");
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rect = make_background (&bg_color, 200, 200);
/* first method: use clutter_box_pack() */
clutter_box_pack (CLUTTER_BOX (box), rect,
"x-align", CLUTTER_BIN_ALIGNMENT_FILL,
"y-align", CLUTTER_BIN_ALIGNMENT_FILL,
NULL);
clutter_actor_lower_bottom (rect);
clutter_actor_set_name (rect, "background");
{
ClutterActor *tex;
GError *error;
gchar *file;
error = NULL;
file = g_build_filename (TESTS_DATADIR, "redhand.png", NULL);
tex = clutter_texture_new_from_file (file, &error);
if (error)
g_error ("Unable to create texture: %s", error->message);
clutter_texture_set_keep_aspect_ratio (CLUTTER_TEXTURE (tex), TRUE);
/* second method: use clutter_bin_layout_add() */
clutter_bin_layout_add (CLUTTER_BIN_LAYOUT (layout), tex,
CLUTTER_BIN_ALIGNMENT_CENTER,
CLUTTER_BIN_ALIGNMENT_CENTER);
clutter_actor_raise (tex, rect);
clutter_actor_set_width (tex, 175);
clutter_actor_set_name (tex, "texture");
g_free (file);
}
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color = clutter_color_new (g_random_int_range (0, 255),
g_random_int_range (0, 255),
g_random_int_range (0, 255),
224);
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rect = clutter_rectangle_new_with_color (color);
/* third method: container_add() and set_alignment() */
clutter_container_add_actor (CLUTTER_CONTAINER (box), rect);
clutter_bin_layout_set_alignment (CLUTTER_BIN_LAYOUT (layout), rect,
CLUTTER_BIN_ALIGNMENT_END,
CLUTTER_BIN_ALIGNMENT_END);
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clutter_actor_set_size (rect, 50, 50);
clutter_actor_set_opacity (rect, 0);
clutter_actor_raise_top (rect);
clutter_actor_set_name (rect, "emblem");
g_signal_connect (box,
"enter-event", G_CALLBACK (on_box_enter),
rect);
g_signal_connect (box,
"leave-event", G_CALLBACK (on_box_leave),
rect);
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clutter_actor_show_all (stage);
clutter_main ();
clutter_color_free (color);
return EXIT_SUCCESS;
}