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#include <stdlib.h>
#include <gmodule.h>
#include <clutter/clutter.h>
typedef struct _ColorContent {
GObject parent_instance;
double red;
double green;
double blue;
double alpha;
float padding;
} ColorContent;
typedef struct _ColorContentClass {
GObjectClass parent_class;
} ColorContentClass;
static void clutter_content_iface_init (ClutterContentIface *iface);
G_DEFINE_TYPE_WITH_CODE (ColorContent, color_content, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_CONTENT,
clutter_content_iface_init))
static void
color_content_paint_content (ClutterContent *content,
ClutterActor *actor,
ClutterPaintNode *root)
{
ColorContent *self = (ColorContent *) content;
ClutterActorBox box, content_box;
ClutterColor color;
PangoLayout *layout;
PangoRectangle logical;
ClutterPaintNode *node;
#if 0
g_debug ("Painting content [%p] "
"{ r:%.2f, g:%.2f, b:%.2f, a:%.2f } "
"for actor [%p] (context: [%p])",
content,
self->red,
self->green,
self->blue,
self->alpha,
actor, context);
#endif
clutter_actor_get_content_box (actor, &content_box);
box = content_box;
box.x1 += self->padding;
box.y1 += self->padding;
box.x2 -= self->padding;
box.y2 -= self->padding;
color.alpha = self->alpha * 255;
color.red = self->red * 255;
color.green = self->green * 255;
color.blue = self->blue * 255;
node = clutter_color_node_new (&color);
clutter_paint_node_add_rectangle (node, &box);
clutter_paint_node_add_child (root, node);
clutter_paint_node_unref (node);
color.red = (1.0 - self->red) * 255;
color.green = (1.0 - self->green) * 255;
color.blue = (1.0 - self->blue) * 255;
layout = clutter_actor_create_pango_layout (actor, "A");
pango_layout_get_pixel_extents (layout, NULL, &logical);
node = clutter_text_node_new (layout, &color);
/* top-left */
box.x1 = clutter_actor_box_get_x (&content_box);
box.y1 = clutter_actor_box_get_y (&content_box);
box.x2 = box.x1 + logical.width;
box.y2 = box.y1 + logical.height;
clutter_paint_node_add_rectangle (node, &box);
/* top-right */
box.x1 = clutter_actor_box_get_x (&content_box)
+ clutter_actor_box_get_width (&content_box)
- logical.width;
box.y1 = clutter_actor_box_get_y (&content_box);
box.x2 = box.x1 + logical.width;
box.y2 = box.y1 + logical.height;
clutter_paint_node_add_rectangle (node, &box);
/* bottom-right */
box.x1 = clutter_actor_box_get_x (&content_box)
+ clutter_actor_box_get_width (&content_box)
- logical.width;
box.y1 = clutter_actor_box_get_y (&content_box)
+ clutter_actor_box_get_height (&content_box)
- logical.height;
box.x2 = box.x1 + logical.width;
box.y2 = box.y1 + logical.height;
clutter_paint_node_add_rectangle (node, &box);
/* bottom-left */
box.x1 = clutter_actor_box_get_x (&content_box);
box.y1 = clutter_actor_box_get_y (&content_box)
+ clutter_actor_box_get_height (&content_box)
- logical.height;
box.x2 = box.x1 + logical.width;
box.y2 = box.y1 + logical.height;
clutter_paint_node_add_rectangle (node, &box);
/* center */
box.x1 = clutter_actor_box_get_x (&content_box)
+ (clutter_actor_box_get_width (&content_box) - logical.width) / 2.0;
box.y1 = clutter_actor_box_get_y (&content_box)
+ (clutter_actor_box_get_height (&content_box) - logical.height) / 2.0;
box.x2 = box.x1 + logical.width;
box.y2 = box.y1 + logical.height;
clutter_paint_node_add_rectangle (node, &box);
clutter_paint_node_add_child (root, node);
clutter_paint_node_unref (node);
g_object_unref (layout);
}
static void
clutter_content_iface_init (ClutterContentIface *iface)
{
iface->paint_content = color_content_paint_content;
}
static void
color_content_class_init (ColorContentClass *klass)
{
}
static void
color_content_init (ColorContent *self)
{
}
static ClutterContent *
color_content_new (double red,
double green,
double blue,
double alpha,
float padding)
{
ColorContent *self = g_object_new (color_content_get_type (), NULL);
self->red = red;
self->green = green;
self->blue = blue;
self->alpha = alpha;
self->padding = padding;
return (ClutterContent *) self;
}
G_MODULE_EXPORT int
test_content_main (int argc, char *argv[])
{
ClutterActor *stage, *grid;
ClutterContent *content;
int i, n_rects;
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
return EXIT_FAILURE;
stage = clutter_stage_new ();
clutter_actor_set_name (stage, "Stage");
clutter_stage_set_title (CLUTTER_STAGE (stage), "Content");
clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), TRUE);
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
clutter_actor_show (stage);
grid = clutter_actor_new ();
clutter_actor_set_name (grid, "Grid");
clutter_actor_set_margin_top (grid, 12);
clutter_actor_set_margin_right (grid, 12);
clutter_actor_set_margin_bottom (grid, 12);
clutter_actor_set_margin_left (grid, 12);
clutter_actor_set_layout_manager (grid, clutter_flow_layout_new (CLUTTER_FLOW_HORIZONTAL));
clutter_actor_add_constraint (grid, clutter_bind_constraint_new (stage, CLUTTER_BIND_SIZE, 0.0));
clutter_actor_add_child (stage, grid);
content = color_content_new (g_random_double_range (0.0, 1.0),
g_random_double_range (0.0, 1.0),
g_random_double_range (0.0, 1.0),
1.0,
2.0);
n_rects = g_random_int_range (12, 24);
for (i = 0; i < n_rects; i++)
{
ClutterActor *box = clutter_actor_new ();
ClutterColor bg_color = {
g_random_int_range (0, 255),
g_random_int_range (0, 255),
g_random_int_range (0, 255),
255
};
char *name, *color;
color = clutter_color_to_string (&bg_color);
name = g_strconcat ("Box <", color, ">", NULL);
clutter_actor_set_name (box, name);
g_free (name);
g_free (color);
clutter_actor_set_background_color (box, &bg_color);
clutter_actor_set_content (box, content);
clutter_actor_set_size (box, 64, 64);
clutter_actor_add_child (grid, box);
}
clutter_main ();
g_object_unref (content);
return EXIT_SUCCESS;
}
G_MODULE_EXPORT const char *
test_content_describe (void)
{
return "A simple test for ClutterContent";
}
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