dw_bullet.c

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/*
 * File: dw_bullet.c
 *
 * Copyright (C) 1997 Raph Levien <[e-mail]>
 * Copyright (C) 1999 Luca Rota <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include "dw_bullet.h"

static void Dw_bullet_init(DwBullet * bullet);
static void Dw_bullet_class_init(DwBulletClass * klass);
static void Dw_bullet_size_request(DwWidget * widget, DwRequisition * requisition);
static void Dw_bullet_draw(DwWidget * widget, DwRectangle * area, GdkEventExpose * event);


GtkType a_Dw_bullet_get_type(void)
{
	static GtkType type = 0;

	if (!type) {
		GtkTypeInfo info = {
			"DwBullet",
			sizeof(DwBullet),
			sizeof(DwBulletClass),
			(GtkClassInitFunc) Dw_bullet_class_init,
			(GtkObjectInitFunc) Dw_bullet_init,
			(GtkArgSetFunc) NULL,
			(GtkArgGetFunc) NULL,
		};

		type = gtk_type_unique(DW_TYPE_WIDGET, &info);
	}

	return type;
}


DwWidget *a_Dw_bullet_new(DwBulletType type)
{
	GtkObject *object;

	object = gtk_object_new(DW_TYPE_BULLET, NULL);
	DW_BULLET(object)->type = type;

	return DW_WIDGET(object);
}


static void Dw_bullet_init(DwBullet * bullet)
{
	bullet->type = DW_BULLET_DISC;
}


static void Dw_bullet_class_init(DwBulletClass * klass)
{
	DwWidgetClass *widget_class;

	widget_class = (DwWidgetClass *) klass;
	widget_class->size_request = Dw_bullet_size_request;
	widget_class->draw = Dw_bullet_draw;
}


static void Dw_bullet_size_request(DwWidget * widget, DwRequisition * requisition)
{
	requisition->width = 8;
	requisition->ascent = 8;
	requisition->descent = 0;
}


static void Dw_bullet_draw(DwWidget * widget, DwRectangle * area, GdkEventExpose * event)
{
	gint x, y;
	GdkGC *gc;

	x = Dw_widget_x_world_to_viewport(widget, widget->allocation.x);
	y = Dw_widget_y_world_to_viewport(widget, widget->allocation.y);
	gc = widget->style->color->gc;

	switch (DW_BULLET(widget)->type) {
	case DW_BULLET_DISC:
		gdk_draw_arc(widget->window, gc, TRUE, x + 2, y + 1, 4, 4, 0, 360 * 64);
		gdk_draw_arc(widget->window, gc, FALSE, x + 2, y + 1, 4, 4, 0, 360 * 64);
		break;
	case DW_BULLET_CIRCLE:
		gdk_draw_arc(widget->window, gc, FALSE, x + 1, y, 6, 6, 0, 360 * 64);
		break;
	case DW_BULLET_SQUARE:
		gdk_draw_rectangle(widget->window, gc, FALSE, x + 1, y, 6, 6);
		break;
	default:		/* Should/could the numeric bullets be treated here ? */
		break;
	}
}