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253 lines
7.2 KiB
C
253 lines
7.2 KiB
C
#include <stdlib.h>
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#include <gmodule.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <clutter/clutter.h>
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typedef struct _SolidContent {
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GObject parent_instance;
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double red;
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double green;
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double blue;
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double alpha;
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float padding;
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} SolidContent;
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typedef struct _SolidContentClass {
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GObjectClass parent_class;
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} SolidContentClass;
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static void clutter_content_iface_init (ClutterContentIface *iface);
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G_DEFINE_TYPE_WITH_CODE (SolidContent, solid_content, G_TYPE_OBJECT,
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G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_CONTENT,
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clutter_content_iface_init))
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static void
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solid_content_paint_content (ClutterContent *content,
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ClutterActor *actor,
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ClutterPaintNode *root)
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{
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SolidContent *self = (SolidContent *) content;
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ClutterActorBox box, content_box;
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ClutterColor color;
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PangoLayout *layout;
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PangoRectangle logical;
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ClutterPaintNode *node;
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#if 0
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g_debug ("Painting content [%p] "
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"{ r:%.2f, g:%.2f, b:%.2f, a:%.2f } "
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"for actor [%p] (context: [%p])",
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content,
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self->red,
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self->green,
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self->blue,
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self->alpha,
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actor, context);
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#endif
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clutter_actor_get_content_box (actor, &content_box);
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box = content_box;
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box.x1 += self->padding;
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box.y1 += self->padding;
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box.x2 -= self->padding;
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box.y2 -= self->padding;
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color.alpha = self->alpha * 255;
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color.red = self->red * 255;
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color.green = self->green * 255;
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color.blue = self->blue * 255;
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node = clutter_color_node_new (&color);
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clutter_paint_node_add_rectangle (node, &box);
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clutter_paint_node_add_child (root, node);
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clutter_paint_node_unref (node);
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color.red = (1.0 - self->red) * 255;
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color.green = (1.0 - self->green) * 255;
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color.blue = (1.0 - self->blue) * 255;
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layout = clutter_actor_create_pango_layout (actor, "A");
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pango_layout_get_pixel_extents (layout, NULL, &logical);
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node = clutter_text_node_new (layout, &color);
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/* top-left */
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box.x1 = clutter_actor_box_get_x (&content_box);
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box.y1 = clutter_actor_box_get_y (&content_box);
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box.x2 = box.x1 + logical.width;
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box.y2 = box.y1 + logical.height;
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clutter_paint_node_add_rectangle (node, &box);
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/* top-right */
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box.x1 = clutter_actor_box_get_x (&content_box)
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+ clutter_actor_box_get_width (&content_box)
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- logical.width;
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box.y1 = clutter_actor_box_get_y (&content_box);
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box.x2 = box.x1 + logical.width;
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box.y2 = box.y1 + logical.height;
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clutter_paint_node_add_rectangle (node, &box);
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/* bottom-right */
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box.x1 = clutter_actor_box_get_x (&content_box)
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+ clutter_actor_box_get_width (&content_box)
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- logical.width;
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box.y1 = clutter_actor_box_get_y (&content_box)
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+ clutter_actor_box_get_height (&content_box)
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- logical.height;
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box.x2 = box.x1 + logical.width;
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box.y2 = box.y1 + logical.height;
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clutter_paint_node_add_rectangle (node, &box);
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/* bottom-left */
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box.x1 = clutter_actor_box_get_x (&content_box);
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box.y1 = clutter_actor_box_get_y (&content_box)
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+ clutter_actor_box_get_height (&content_box)
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- logical.height;
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box.x2 = box.x1 + logical.width;
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box.y2 = box.y1 + logical.height;
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clutter_paint_node_add_rectangle (node, &box);
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/* center */
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box.x1 = clutter_actor_box_get_x (&content_box)
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+ (clutter_actor_box_get_width (&content_box) - logical.width) / 2.0;
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box.y1 = clutter_actor_box_get_y (&content_box)
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+ (clutter_actor_box_get_height (&content_box) - logical.height) / 2.0;
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box.x2 = box.x1 + logical.width;
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box.y2 = box.y1 + logical.height;
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clutter_paint_node_add_rectangle (node, &box);
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clutter_paint_node_add_child (root, node);
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clutter_paint_node_unref (node);
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g_object_unref (layout);
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}
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static void
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clutter_content_iface_init (ClutterContentIface *iface)
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{
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iface->paint_content = solid_content_paint_content;
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}
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static void
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solid_content_class_init (SolidContentClass *klass)
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{
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}
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static void
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solid_content_init (SolidContent *self)
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{
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}
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static ClutterContent *
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solid_content_new (double red,
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double green,
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double blue,
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double alpha,
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float padding)
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{
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SolidContent *self = g_object_new (solid_content_get_type (), NULL);
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self->red = red;
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self->green = green;
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self->blue = blue;
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self->alpha = alpha;
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self->padding = padding;
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return (ClutterContent *) self;
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}
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G_MODULE_EXPORT const char *
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test_image_describe (void)
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{
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return "A test with image content.";
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}
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G_MODULE_EXPORT int
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test_image_main (int argc, char *argv[])
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{
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ClutterActor *stage, *grid;
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ClutterContent *color, *image;
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GdkPixbuf *pixbuf;
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int i, n_rects;
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if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
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return EXIT_FAILURE;
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stage = clutter_stage_new ();
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clutter_actor_set_name (stage, "Stage");
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clutter_stage_set_title (CLUTTER_STAGE (stage), "Content");
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clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), TRUE);
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g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
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clutter_actor_show (stage);
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grid = clutter_actor_new ();
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clutter_actor_set_name (grid, "Grid");
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clutter_actor_set_margin_top (grid, 12);
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clutter_actor_set_margin_right (grid, 12);
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clutter_actor_set_margin_bottom (grid, 12);
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clutter_actor_set_margin_left (grid, 12);
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clutter_actor_set_layout_manager (grid, clutter_flow_layout_new (CLUTTER_FLOW_HORIZONTAL));
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clutter_actor_add_constraint (grid, clutter_bind_constraint_new (stage, CLUTTER_BIND_SIZE, 0.0));
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clutter_actor_add_child (stage, grid);
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color = solid_content_new (g_random_double_range (0.0, 1.0),
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g_random_double_range (0.0, 1.0),
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g_random_double_range (0.0, 1.0),
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1.0,
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2.0);
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pixbuf = gdk_pixbuf_new_from_file (TESTS_DATADIR G_DIR_SEPARATOR_S "redhand.png", NULL);
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image = clutter_image_new ();
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clutter_image_set_data (CLUTTER_IMAGE (image),
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gdk_pixbuf_get_pixels (pixbuf),
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gdk_pixbuf_get_has_alpha (pixbuf)
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? COGL_PIXEL_FORMAT_RGBA_8888
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: COGL_PIXEL_FORMAT_RGB_888,
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gdk_pixbuf_get_width (pixbuf),
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gdk_pixbuf_get_height (pixbuf),
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gdk_pixbuf_get_rowstride (pixbuf),
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NULL);
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g_object_unref (pixbuf);
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n_rects = g_random_int_range (12, 24);
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for (i = 0; i < n_rects; i++)
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{
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ClutterActor *box = clutter_actor_new ();
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ClutterColor bg_color = {
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g_random_int_range (0, 255),
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g_random_int_range (0, 255),
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g_random_int_range (0, 255),
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255
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};
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char *name, *str;
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str = clutter_color_to_string (&bg_color);
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name = g_strconcat ("Box <", color, ">", NULL);
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clutter_actor_set_name (box, name);
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g_free (name);
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g_free (str);
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if ((i % 2) == 0)
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clutter_actor_set_content (box, color);
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else
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clutter_actor_set_content (box, image);
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clutter_actor_set_size (box, 64, 64);
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clutter_actor_add_child (grid, box);
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}
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clutter_main ();
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g_object_unref (color);
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g_object_unref (image);
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return EXIT_SUCCESS;
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}
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