*
* demo-item.c - a simple demo item.
*/
+#include <math.h>
+
#include "goocanvas.h"
#include "demo-item.h"
gdouble y,
gdouble width,
gdouble height,
+ char letter,
...)
{
GooCanvasItem *item;
demo_item->y = y;
demo_item->width = width;
demo_item->height = height;
+ demo_item->letter = letter;
- va_start (var_args, height);
+ va_start (var_args, letter);
first_property = va_arg (var_args, char*);
if (first_property)
g_object_set_valist ((GObject*) item, first_property, var_args);
cairo_t *cr,
GooCanvasBounds *bounds)
{
- GooDemoItem *demo_item = (GooDemoItem*) simple;
+ GooDemoItem *item = (GooDemoItem*) simple;
+ cairo_pattern_t *gradient;
+ cairo_text_extents_t extents;
+ int rad = (int) MIN (item->width / 2, item->height / 2);
+ int cx = item->x + item->width / 2;
+ int cy = item->y + item->height / 2;
+ double spot_angle = M_PI / 4.0;
+ double spot_rad = rad / 2.0;
+ char string[2];
+
+ cairo_save (cr);
+
+ gradient = cairo_pattern_create_radial (cx - spot_rad * cos (spot_angle),
+ cy - spot_rad * sin (spot_angle),
+ 0.0,
+ cx - spot_rad * cos (spot_angle),
+ cy - spot_rad * sin (spot_angle),
+ rad + spot_rad);
+ cairo_pattern_add_color_stop_rgb (gradient, 0.0, 1.0, 1.0, 1.0);
+ cairo_pattern_add_color_stop_rgb (gradient, 1.0, 0.33, 0.33, 0.33);
+
+ cairo_set_source (cr, gradient);
+
+ cairo_arc (cr,
+ cx, cy,
+ rad, 0, 2 * M_PI);
- cairo_move_to (cr, demo_item->x, demo_item->y);
- cairo_line_to (cr, demo_item->x, demo_item->y + demo_item->height);
- cairo_line_to (cr, demo_item->x + demo_item->width,
- demo_item->y + demo_item->height);
- cairo_line_to (cr, demo_item->x + demo_item->width, demo_item->y);
- cairo_close_path (cr);
- goo_canvas_style_set_fill_options (simple->simple_data->style, cr);
cairo_fill (cr);
+
+ cairo_select_font_face (cr, "mono",
+ CAIRO_FONT_SLANT_NORMAL,
+ CAIRO_FONT_WEIGHT_BOLD);
+ cairo_set_font_size (cr, 1.8 * rad);
+
+ string[0] = item->letter;
+ string[1] = '\0';
+ cairo_text_extents (cr, string, &extents);
+ cairo_move_to (cr,
+ cx - extents.width / 2 - extents.x_bearing,
+ cy - extents.height / 2 - extents.y_bearing);
+
+ cairo_set_source_rgb (cr, 0.2, 0.3, 0.8);
+ cairo_show_text (cr, string);
+
+
+ cairo_restore (cr);
}
/* Hit detection. This should check if the given coordinate (in the item's