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/* slurs.c
*
* Functions for drawing slurs
*
* for Denemo, a gtk+ frontend to GNU Lilypond
* (c) 2000, 2001 Adam Tee, Matthew Hiller
*/
#include "datastructures.h"
#include "utils.h" /* Includes <gdk.h> */
GSList *
push_slur_stack (GSList * slur_stack, gint x)
{
slur_stack = g_slist_prepend (slur_stack, GINT_TO_POINTER (x));
return slur_stack;
}
gint top_slur_stack (GSList * slur_stack)
{
if (slur_stack)
return GPOINTER_TO_INT (slur_stack->data);
else
return -1;
}
GSList *
pop_slur_stack (GSList * slur_stack)
{
if (slur_stack)
{
GSList *head = slur_stack;
slur_stack = g_slist_remove_link (slur_stack, head);
g_slist_free_1 (head);
return slur_stack;
}
else
return NULL;
}
void
draw_slur (GdkPixmap * pixmap, GdkGC * gc, GSList ** slur_stack,
gint x2, gint y)
{
gint x1 = top_slur_stack (*slur_stack);
if (x1 != -1)
{
*slur_stack = pop_slur_stack (*slur_stack);
gdk_draw_arc (pixmap, gc, FALSE, x1, y - 15, x2 - x1, 8, 0, 64 * 180);
}
}
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