/**
* clutter_color_shade:
* @color: a #ClutterColor
* @factor: the shade factor to apply
* @result: (out): return location for the shaded color
*
* Shades @color by @factor and saves the modified color into @result.
*/
void
clutter_color_shade (const ClutterColor *color,
gdouble factor,
ClutterColor *result)
{
float h, l, s;
g_return_if_fail (color != NULL);
g_return_if_fail (result != NULL);
clutter_color_to_hls (color, &h, &l, &s);
l *= factor;
if (l > 1.0)
l = 1.0;
else if (l < 0)
l = 0;
s *= factor;
if (s > 1.0)
s = 1.0;
else if (s < 0)
s = 0;
clutter_color_from_hls (result, h, l, s);
result->alpha = color->alpha;
}
//doc ClutterColor fromHLS(h, l, s)
IO_METHOD(IoClutterColor, fromHLS) {
ClutterColor color;
float h = CNUMBER(IoMessage_locals_numberArgAt_(m, locals, 0)),
l = CNUMBER(IoMessage_locals_numberArgAt_(m, locals, 1)),
s = CNUMBER(IoMessage_locals_numberArgAt_(m, locals, 2));
clutter_color_from_hls(&color, h, l, s);
return IoClutterColor_newWithColor(IOSTATE, color);
}
/**
* clutter_color_shade:
* @color: a #ClutterColor
* @factor: the shade factor to apply
* @result: (out caller-allocates): return location for the shaded color
*
* Shades @color by @factor and saves the modified color into @result.
*/
void
clutter_color_shade (const ClutterColor *color,
gdouble factor,
ClutterColor *result)
{
float h, l, s;
g_return_if_fail (color != NULL);
g_return_if_fail (result != NULL);
clutter_color_to_hls (color, &h, &l, &s);
l = CLAMP (l * factor, 0.0, 1.0);
s = CLAMP (s * factor, 0.0, 1.0);
clutter_color_from_hls (result, h, l, s);
result->alpha = color->alpha;
}
static void
add_actor (ClutterContainer *container)
{
ClutterActor *rect;
ClutterColor color = { 0xff, 0xff, 0xff, 255 };
static gboolean expand = TRUE;
clutter_color_from_hls (&color,
g_random_double_range (0.0, 360.0), 0.5, 0.5);
rect = clutter_rectangle_new_with_color (&color);
clutter_actor_set_size (rect, 32, 64);
clutter_container_add_actor (container, rect);
clutter_actor_set_reactive (rect, TRUE);
g_signal_connect (rect, "enter-event", G_CALLBACK (enter_event), NULL);
g_signal_connect (rect, "leave-event", G_CALLBACK (leave_event), NULL);
g_signal_connect (rect, "button-release-event",
G_CALLBACK (button_release_event), container);
clutter_container_child_set (container, rect, "expand", expand, NULL);
expand = !expand;
}
static void
frame_cb (ClutterTimeline *timeline,
gint elapsed_msecs,
TestState *state)
{
guint x, y;
float period_progress = clutter_timeline_get_progress (timeline);
float period_progress_sin = sinf (period_progress);
float wave_shift = period_progress * WAVE_SPEED;
float ripple_shift = period_progress * RIPPLE_SPEED;
for (y = 0; y <= MESH_HEIGHT; y++)
for (x = 0; x <= MESH_WIDTH; x++)
{
guint vert_index = (MESH_WIDTH + 1) * y + x;
float *vert = &state->quad_mesh_verts[3 * vert_index];
float real_x = x * QUAD_WIDTH;
float real_y = y * QUAD_HEIGHT;
float wave_offset = (float)x / (MESH_WIDTH + 1);
float wave_angle =
(WAVE_PERIODS * 2 * G_PI * wave_offset) + wave_shift;
float wave_sin = sinf (wave_angle);
float a_sqr = (RIPPLE_CENTER_X - real_x) * (RIPPLE_CENTER_X - real_x);
float b_sqr = (RIPPLE_CENTER_Y - real_y) * (RIPPLE_CENTER_Y - real_y);
float ripple_offset = sqrtf (a_sqr + b_sqr) / RIPPLE_RADIUS;
float ripple_angle =
(RIPPLE_PERIODS * 2 * G_PI * ripple_offset) + ripple_shift;
float ripple_sin = sinf (ripple_angle);
float h, s, l;
guint8 *color;
vert[2] = (wave_sin * WAVE_DEPTH) + (ripple_sin * RIPPLE_DEPTH);
/* Burn some CPU time picking a pretty color... */
h = (HSL_OFFSET
+ wave_sin
+ ripple_sin
+ period_progress_sin) * HSL_SCALE;
s = 0.5;
l = 0.25 + (period_progress_sin + 1.0) / 4.0;
color = &state->quad_mesh_colors[4 * vert_index];
/* A bit of a sneaky cast, but it seems safe to assume the ClutterColor
* typedef is set in stone... */
clutter_color_from_hls ((ClutterColor *)color, h * 360.0, l, s);
color[0] = (color[0] * color[3] + 128) / 255;
color[1] = (color[1] * color[3] + 128) / 255;
color[2] = (color[2] * color[3] + 128) / 255;
}
cogl_vertex_buffer_add (state->buffer,
"gl_Vertex",
3, /* n components */
COGL_ATTRIBUTE_TYPE_FLOAT,
FALSE, /* normalized */
0, /* stride */
state->quad_mesh_verts);
cogl_vertex_buffer_add (state->buffer,
"gl_Color",
4, /* n components */
COGL_ATTRIBUTE_TYPE_UNSIGNED_BYTE,
FALSE, /* normalized */
0, /* stride */
state->quad_mesh_colors);
cogl_vertex_buffer_submit (state->buffer);
clutter_actor_set_rotation (state->dummy,
CLUTTER_Z_AXIS,
360 * period_progress,
(MESH_WIDTH * QUAD_WIDTH) / 2,
(MESH_HEIGHT * QUAD_HEIGHT) / 2,
0);
clutter_actor_set_rotation (state->dummy,
CLUTTER_X_AXIS,
360 * period_progress,
(MESH_WIDTH * QUAD_WIDTH) / 2,
(MESH_HEIGHT * QUAD_HEIGHT) / 2,
0);
}
static gboolean
parse_hsla (ClutterColor *color,
gchar *str,
gboolean has_alpha)
{
gdouble number;
gdouble h, l, s;
skip_whitespace (&str);
if (*str != '(')
return FALSE;
str += 1;
/* hue */
skip_whitespace (&str);
/* we don't do any angle normalization here because
* clutter_color_from_hls() will do it for us
*/
number = g_ascii_strtod (str, &str);
skip_whitespace (&str);
if (*str != ',')
return FALSE;
h = number;
str += 1;
/* saturation */
skip_whitespace (&str);
number = g_ascii_strtod (str, &str);
skip_whitespace (&str);
if (*str != '%')
return FALSE;
str += 1;
s = CLAMP (number / 100.0, 0.0, 1.0);
skip_whitespace (&str);
if (*str != ',')
return FALSE;
str += 1;
/* luminance */
skip_whitespace (&str);
number = g_ascii_strtod (str, &str);
skip_whitespace (&str);
if (*str != '%')
return FALSE;
str += 1;
l = CLAMP (number / 100.0, 0.0, 1.0);
skip_whitespace (&str);
/* alpha (optional); since the alpha channel value can only
* be between 0 and 1 we don't use the parse_rgb_value()
* function
*/
if (has_alpha)
{
if (*str != ',')
return FALSE;
str += 1;
skip_whitespace (&str);
number = g_ascii_strtod (str, &str);
color->alpha = CLAMP (number * 255.0, 0, 255);
}
else
color->alpha = 255;
skip_whitespace (&str);
if (*str != ')')
return FALSE;
clutter_color_from_hls (color, h, l, s);
return TRUE;
}
static void
add_actor (ClutterActor *box,
gint left,
gint top,
gint width,
gint height)
{
ClutterLayoutManager *layout;
ClutterActor *rect, *text;
ClutterColor color;
clutter_color_from_hls (&color,
g_random_double_range (0.0, 360.0),
0.5,
0.5);
color.alpha = 255;
rect = clutter_actor_new ();
clutter_actor_set_layout_manager (rect, clutter_bin_layout_new ());
clutter_actor_set_background_color (rect, &color);
clutter_actor_set_reactive (rect, TRUE);
if (random_size)
clutter_actor_set_size (rect,
g_random_int_range (40, 80),
g_random_int_range (40, 80));
else
clutter_actor_set_size (rect, 60, 60);
clutter_actor_set_x_expand (rect, default_expand);
clutter_actor_set_y_expand (rect, default_expand);
if (!default_expand)
{
clutter_actor_set_x_align (rect, CLUTTER_ACTOR_ALIGN_CENTER);
clutter_actor_set_y_align (rect, CLUTTER_ACTOR_ALIGN_CENTER);
}
if (random_align)
{
clutter_actor_set_x_align (rect, g_random_int_range (0, 3));
clutter_actor_set_y_align (rect, g_random_int_range (0, 3));
}
text = clutter_text_new_with_text ("Sans 8px", NULL);
clutter_text_set_line_alignment (CLUTTER_TEXT (text),
PANGO_ALIGN_CENTER);
clutter_actor_add_child (rect, text);
g_signal_connect (rect, "button-release-event",
G_CALLBACK (button_release_cb), NULL);
g_signal_connect (rect, "notify::x-expand",
G_CALLBACK (changed_cb), text);
g_signal_connect (rect, "notify::y-expand",
G_CALLBACK (changed_cb), text);
g_signal_connect (rect, "notify::x-align",
G_CALLBACK (changed_cb), text);
g_signal_connect (rect, "notify::y-align",
G_CALLBACK (changed_cb), text);
layout = clutter_actor_get_layout_manager (box);
if (use_box)
clutter_actor_add_child (box, rect);
else
clutter_grid_layout_attach (CLUTTER_GRID_LAYOUT (layout), rect,
left, top, width, height);
changed_cb (rect, NULL, text);
}
int
main (int argc, char *argv[])
{
ClutterActor *stage, *box;
ClutterLayoutManager *layout;
GError *error;
gint i;
error = NULL;
if (clutter_init_with_args (&argc, &argv,
NULL,
entries,
NULL,
&error) != CLUTTER_INIT_SUCCESS)
{
g_print ("Unable to run flow-layout: %s", error->message);
g_error_free (error);
return EXIT_FAILURE;
}
stage = clutter_stage_new ();
clutter_actor_set_background_color (stage, CLUTTER_COLOR_LightSkyBlue);
clutter_stage_set_title (CLUTTER_STAGE (stage), "Flow Layout");
clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), TRUE);
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
layout = clutter_flow_layout_new (vertical ? CLUTTER_FLOW_VERTICAL
: CLUTTER_FLOW_HORIZONTAL);
clutter_flow_layout_set_homogeneous (CLUTTER_FLOW_LAYOUT (layout),
is_homogeneous);
clutter_flow_layout_set_column_spacing (CLUTTER_FLOW_LAYOUT (layout),
x_spacing);
clutter_flow_layout_set_row_spacing (CLUTTER_FLOW_LAYOUT (layout),
y_spacing);
box = clutter_actor_new ();
clutter_actor_set_layout_manager (box, layout);
clutter_actor_set_background_color (box, CLUTTER_COLOR_Aluminium2);
clutter_actor_add_child (stage, box);
if (!fixed_size)
clutter_actor_add_constraint (box, clutter_bind_constraint_new (stage, CLUTTER_BIND_SIZE, 0.0));
clutter_actor_set_position (box, 0, 0);
clutter_actor_set_name (box, "box");
for (i = 0; i < n_rects; i++)
{
ClutterColor color = CLUTTER_COLOR_INIT (255, 255, 255, 255);
gfloat width, height;
ClutterActor *rect;
gchar *name;
name = g_strdup_printf ("rect%02d", i);
clutter_color_from_hls (&color,
360.0 / n_rects * i,
0.5,
0.8);
rect = clutter_actor_new ();
clutter_actor_set_background_color (rect, &color);
if (random_size)
{
width = g_random_int_range (50, 100);
height = g_random_int_range (50, 100);
}
else
width = height = 50.f;
clutter_actor_set_size (rect, width, height);
clutter_actor_set_name (rect, name);
clutter_actor_add_child (box, rect);
g_free (name);
}
clutter_actor_show (stage);
clutter_main ();
return EXIT_SUCCESS;
}
