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mutter/tests/interactive/test-cogl-tex-polygon.c

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#include <config.h>
#include <glib.h>
#include <gmodule.h>
#include <stdlib.h>
#include <clutter/clutter.h>
#include <cogl/cogl.h>
/* Coglbox declaration
*--------------------------------------------------*/
G_BEGIN_DECLS
#define TEST_TYPE_COGLBOX test_coglbox_get_type()
#define TEST_COGLBOX(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), \
TEST_TYPE_COGLBOX, TestCoglboxClass))
#define TEST_COGLBOX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), \
TEST_TYPE_COGLBOX, TestCoglboxClass))
#define TEST_IS_COGLBOX(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
TEST_TYPE_COGLBOX))
#define TEST_IS_COGLBOX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), \
TEST_TYPE_COGLBOX))
#define TEST_COGLBOX_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), \
TEST_TYPE_COGLBOX, TestCoglboxClass))
typedef struct _TestCoglbox TestCoglbox;
typedef struct _TestCoglboxClass TestCoglboxClass;
typedef struct _TestCoglboxPrivate TestCoglboxPrivate;
struct _TestCoglbox
{
ClutterActor parent;
/*< private >*/
TestCoglboxPrivate *priv;
};
struct _TestCoglboxClass
{
ClutterActorClass parent_class;
/* padding for future expansion */
void (*_test_coglbox1) (void);
void (*_test_coglbox2) (void);
void (*_test_coglbox3) (void);
void (*_test_coglbox4) (void);
};
static GType test_coglbox_get_type (void) G_GNUC_CONST;
G_END_DECLS
/* Coglbox private declaration
*--------------------------------------------------*/
G_DEFINE_TYPE (TestCoglbox, test_coglbox, CLUTTER_TYPE_ACTOR);
#define TEST_COGLBOX_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), TEST_TYPE_COGLBOX, TestCoglboxPrivate))
struct _TestCoglboxPrivate
{
CoglHandle sliced_tex, not_sliced_tex;
gint frame;
gboolean use_sliced;
gboolean use_linear_filtering;
};
/* Coglbox implementation
*--------------------------------------------------*/
static void
test_coglbox_fade_texture (CoglHandle tex_id,
gfloat x1,
gfloat y1,
gfloat x2,
gfloat y2,
gfloat tx1,
gfloat ty1,
gfloat tx2,
gfloat ty2)
{
CoglTextureVertex vertices[4];
int i;
vertices[0].x = x1;
vertices[0].y = y1;
vertices[0].z = 0;
vertices[0].tx = tx1;
vertices[0].ty = ty1;
vertices[1].x = x1;
vertices[1].y = y2;
vertices[1].z = 0;
vertices[1].tx = tx1;
vertices[1].ty = ty2;
vertices[2].x = x2;
vertices[2].y = y2;
vertices[2].z = 0;
vertices[2].tx = tx2;
vertices[2].ty = ty2;
vertices[3].x = x2;
vertices[3].y = y1;
vertices[3].z = 0;
vertices[3].tx = tx2;
vertices[3].ty = ty1;
for (i = 0; i < 4; i++)
{
cogl_color_set_from_4ub (&(vertices[i].color),
255,
255,
255,
((i ^ (i >> 1)) & 1) ? 0 : 128);
}
cogl_set_source_texture (tex_id);
cogl_polygon (vertices, 4, TRUE);
cogl_set_source_color4ub (255, 255, 255, 255);
}
static void
test_coglbox_triangle_texture (CoglHandle tex_id,
gfloat x,
gfloat y,
gfloat tx1,
gfloat ty1,
gfloat tx2,
gfloat ty2,
gfloat tx3,
gfloat ty3)
{
CoglTextureVertex vertices[3];
int tex_width = cogl_texture_get_width (tex_id);
int tex_height = cogl_texture_get_height (tex_id);
vertices[0].x = x + tx1 * tex_width;
vertices[0].y = y + ty1 * tex_height;
vertices[0].z = 0;
vertices[0].tx = tx1;
vertices[0].ty = ty1;
vertices[1].x = x + tx2 * tex_width;
vertices[1].y = y + ty2 * tex_height;
vertices[1].z = 0;
vertices[1].tx = tx2;
vertices[1].ty = ty2;
vertices[2].x = x + tx3 * tex_width;
vertices[2].y = y + ty3 * tex_height;
vertices[2].z = 0;
vertices[2].tx = tx3;
vertices[2].ty = ty3;
cogl_set_source_texture (tex_id);
cogl_polygon (vertices, 3, FALSE);
}
static void
test_coglbox_paint (ClutterActor *self)
{
TestCoglboxPrivate *priv = TEST_COGLBOX_GET_PRIVATE (self);
CoglHandle tex_handle = priv->use_sliced ? priv->sliced_tex
: priv->not_sliced_tex;
int tex_width = cogl_texture_get_width (tex_handle);
int tex_height = cogl_texture_get_height (tex_handle);
CoglHandle material = cogl_material_new ();
cogl_material_set_layer (material, 0, tex_handle);
cogl_material_set_layer_filters (material, 0,
priv->use_linear_filtering
? COGL_MATERIAL_FILTER_LINEAR :
COGL_MATERIAL_FILTER_NEAREST,
priv->use_linear_filtering
? COGL_MATERIAL_FILTER_LINEAR :
COGL_MATERIAL_FILTER_NEAREST);
cogl_push_matrix ();
cogl_translate (tex_width / 2, 0, 0);
cogl_rotate (priv->frame, 0, 1, 0);
cogl_translate (-tex_width / 2, 0, 0);
/* Draw a hand and refect it */
cogl_set_source (material);
cogl_rectangle_with_texture_coords (0, 0, tex_width, tex_height,
0, 0, 1, 1);
test_coglbox_fade_texture (tex_handle,
0, tex_height,
tex_width, (tex_height * 3 / 2),
0.0, 1.0,
1.0, 0.5);
cogl_pop_matrix ();
cogl_push_matrix ();
cogl_translate (tex_width * 3 / 2 + 60, 0, 0);
cogl_rotate (priv->frame, 0, 1, 0);
cogl_translate (-tex_width / 2 - 10, 0, 0);
/* Draw the texture split into two triangles */
test_coglbox_triangle_texture (tex_handle,
0, 0,
0, 0,
0, 1,
1, 1);
test_coglbox_triangle_texture (tex_handle,
20, 0,
0, 0,
1, 0,
1, 1);
cogl_pop_matrix ();
cogl_handle_unref (material);
}
static void
test_coglbox_finalize (GObject *object)
{
G_OBJECT_CLASS (test_coglbox_parent_class)->finalize (object);
}
static void
test_coglbox_dispose (GObject *object)
{
TestCoglboxPrivate *priv;
priv = TEST_COGLBOX_GET_PRIVATE (object);
cogl_handle_unref (priv->not_sliced_tex);
cogl_handle_unref (priv->sliced_tex);
G_OBJECT_CLASS (test_coglbox_parent_class)->dispose (object);
}
static void
test_coglbox_init (TestCoglbox *self)
{
TestCoglboxPrivate *priv;
GError *error = NULL;
self->priv = priv = TEST_COGLBOX_GET_PRIVATE (self);
priv->use_linear_filtering = FALSE;
priv->use_sliced = FALSE;
priv->sliced_tex =
cogl_texture_new_from_file ("redhand.png",
COGL_TEXTURE_NONE,
COGL_PIXEL_FORMAT_ANY,
&error);
if (priv->sliced_tex == COGL_INVALID_HANDLE)
{
if (error)
{
g_warning ("Texture loading failed: %s", error->message);
g_error_free (error);
error = NULL;
}
else
g_warning ("Texture loading failed: <unknown>");
}
priv->not_sliced_tex =
cogl_texture_new_from_file ("redhand.png",
COGL_TEXTURE_NO_SLICING,
COGL_PIXEL_FORMAT_ANY,
&error);
if (priv->not_sliced_tex == COGL_INVALID_HANDLE)
{
if (error)
{
g_warning ("Texture loading failed: %s", error->message);
g_error_free (error);
}
else
g_warning ("Texture loading failed: <unknown>");
}
}
static void
test_coglbox_class_init (TestCoglboxClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
gobject_class->finalize = test_coglbox_finalize;
gobject_class->dispose = test_coglbox_dispose;
actor_class->paint = test_coglbox_paint;
g_type_class_add_private (gobject_class, sizeof (TestCoglboxPrivate));
}
static ClutterActor*
test_coglbox_new (void)
{
return g_object_new (TEST_TYPE_COGLBOX, NULL);
}
static void
frame_cb (ClutterTimeline *timeline,
gint frame_num,
gpointer data)
{
TestCoglboxPrivate *priv = TEST_COGLBOX_GET_PRIVATE (data);
priv->frame = frame_num;
clutter_actor_queue_redraw (CLUTTER_ACTOR (data));
}
static void
update_toggle_text (ClutterText *button, gboolean val)
{
clutter_text_set_text (button, val ? "Enabled" : "Disabled");
}
static gboolean
on_toggle_click (ClutterActor *button, ClutterEvent *event,
gboolean *toggle_val)
{
update_toggle_text (CLUTTER_TEXT (button), *toggle_val = !*toggle_val);
return TRUE;
}
static ClutterActor *
make_toggle (const char *label_text, gboolean *toggle_val)
{
ClutterActor *group = clutter_group_new ();
ClutterActor *label = clutter_text_new_with_text ("Sans 14", label_text);
ClutterActor *button = clutter_text_new_with_text ("Sans 14", "");
clutter_actor_set_reactive (button, TRUE);
update_toggle_text (CLUTTER_TEXT (button), *toggle_val);
clutter_actor_set_position (button, clutter_actor_get_width (label) + 10, 0);
clutter_container_add (CLUTTER_CONTAINER (group), label, button, NULL);
g_signal_connect (button, "button-press-event", G_CALLBACK (on_toggle_click),
toggle_val);
return group;
}
G_MODULE_EXPORT int
test_cogl_tex_polygon_main (int argc, char *argv[])
{
ClutterActor *stage;
ClutterActor *coglbox;
ClutterActor *filtering_toggle;
ClutterActor *slicing_toggle;
ClutterActor *note;
ClutterTimeline *timeline;
ClutterColor blue = { 0x30, 0x30, 0xff, 0xff };
clutter_init (&argc, &argv);
/* Stage */
stage = clutter_stage_get_default ();
clutter_stage_set_color (CLUTTER_STAGE (stage), &blue);
clutter_actor_set_size (stage, 640, 480);
clutter_stage_set_title (CLUTTER_STAGE (stage), "Cogl Test");
/* Cogl Box */
coglbox = test_coglbox_new ();
clutter_container_add_actor (CLUTTER_CONTAINER (stage), coglbox);
/* Timeline for animation */
timeline = clutter_timeline_new (6000);
clutter_timeline_set_loop (timeline, TRUE);
g_signal_connect (timeline, "new-frame", G_CALLBACK (frame_cb), coglbox);
clutter_timeline_start (timeline);
/* Labels for toggling settings */
slicing_toggle = make_toggle ("Texture slicing: ",
&(TEST_COGLBOX_GET_PRIVATE (coglbox)
->use_sliced));
clutter_actor_set_position (slicing_toggle, 0,
clutter_actor_get_height (stage)
- clutter_actor_get_height (slicing_toggle));
filtering_toggle = make_toggle ("Linear filtering: ",
&(TEST_COGLBOX_GET_PRIVATE (coglbox)
->use_linear_filtering));
clutter_actor_set_position (filtering_toggle, 0,
clutter_actor_get_y (slicing_toggle)
- clutter_actor_get_height (filtering_toggle));
note = clutter_text_new_with_text ("Sans 10", "<- Click to change");
clutter_actor_set_position (note,
clutter_actor_get_width (filtering_toggle) + 10,
(clutter_actor_get_height (stage)
+ clutter_actor_get_y (filtering_toggle)) / 2
- clutter_actor_get_height (note) / 2);
clutter_container_add (CLUTTER_CONTAINER (stage),
slicing_toggle,
filtering_toggle,
note,
NULL);
clutter_actor_show (stage);
clutter_main ();
return 0;
}
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