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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <math.h>
#include <glib.h>
#include "debug.h"
#include "coord.h"
#include "transform.h"
#include "projection.h"
#include "point.h"
#include "graphics.h"
#include "vehicle.h"
#include "navit.h"
#include "callback.h"
#include "color.h"
#include "cursor.h"
#include "compass.h"
/* #include "track.h" */
struct cursor {
struct graphics *gra;
#define NUM_GC 5
struct graphics_gc *cursor_gc[NUM_GC];
struct graphics_gc *cursor_gc2[NUM_GC];
int current_gc;
int last_dir;
int last_draw_dir;
guint animate_timer;
struct point cursor_pnt;
};
void
cursor_draw(struct cursor *this_, struct point *pnt, int dir, int draw_dir, int force)
{
int x=this_->cursor_pnt.x;
int y=this_->cursor_pnt.y;
int r=12,lw=2;
double dx,dy;
double fac1,fac2;
struct point cpnt[3];
struct graphics *gra=this_->gra;
if (pnt && x == pnt->x && y == pnt->y && !force)
return;
if (!graphics_ready(gra))
return;
this_->last_dir = dir;
this_->last_draw_dir = draw_dir;
cpnt[0]=this_->cursor_pnt;
cpnt[0].x-=r+lw;
cpnt[0].y-=r+lw;
graphics_draw_restore(gra, &cpnt[0], (r+lw)*2, (r+lw)*2);
if (pnt) {
graphics_draw_mode(gra, draw_mode_cursor);
this_->cursor_pnt=*pnt;
x=pnt->x;
y=pnt->y;
cpnt[0].x=x;
cpnt[0].y=y;
graphics_draw_circle(gra, this_->cursor_gc[this_->current_gc], &cpnt[0], r*2);
if (this_->cursor_gc2[this_->current_gc])
graphics_draw_circle(gra, this_->cursor_gc2[this_->current_gc], &cpnt[0], r*2-4);
if (draw_dir) {
dx=sin(M_PI*dir/180.0);
dy=-cos(M_PI*dir/180.0);
fac1=0.7*r;
fac2=0.4*r;
cpnt[0].x=x-dx*fac1+dy*fac2;
cpnt[0].y=y-dy*fac1-dx*fac2;
cpnt[1].x=x+dx*r;
cpnt[1].y=y+dy*r;
cpnt[2].x=x-dx*fac1-dy*fac2;
cpnt[2].y=y-dy*fac1+dx*fac2;
graphics_draw_lines(gra, this_->cursor_gc[this_->current_gc], cpnt, 3);
if (this_->cursor_gc2[this_->current_gc]) {
r-=4;
fac1=0.7*r;
fac2=0.4*r;
cpnt[0].x=x-dx*fac1+dy*fac2;
cpnt[0].y=y-dy*fac1-dx*fac2;
cpnt[1].x=x+dx*r;
cpnt[1].y=y+dy*r;
cpnt[2].x=x-dx*fac1-dy*fac2;
cpnt[2].y=y-dy*fac1+dx*fac2;
graphics_draw_lines(gra, this_->cursor_gc2[this_->current_gc], cpnt, 3);
}
} else {
cpnt[1]=cpnt[0];
graphics_draw_lines(gra, this_->cursor_gc[this_->current_gc], cpnt, 2);
if (this_->cursor_gc2[this_->current_gc])
graphics_draw_circle(gra, this_->cursor_gc2[this_->current_gc], &cpnt[0], 4);
}
graphics_draw_mode(gra, draw_mode_end);
}
}
static gboolean cursor_animate(struct cursor * this)
{
struct point p;
this->current_gc++;
if (this->current_gc >= NUM_GC)
this->current_gc=0;
p.x = this->cursor_pnt.x;
p.y = this->cursor_pnt.y;
cursor_draw(this, &p, this->last_dir, this->last_draw_dir, 1);
return TRUE;
}
struct cursor *
cursor_new(struct graphics *gra, struct color *c, struct color *c2, int animate)
{
unsigned char dash_list[] = { 4, 6 };
int i;
struct cursor *this=g_new(struct cursor,1);
dbg(2,"enter gra=%p c=%p\n", gra, c);
this->gra=gra;
this->animate_timer=0;
for (i=0;i<NUM_GC;i++) {
this->cursor_gc[i]=NULL;
this->cursor_gc2[i]=NULL;
}
this->current_gc=0;
for (i=0;i<NUM_GC;i++) {
this->cursor_gc[i]=graphics_gc_new(gra);
graphics_gc_set_foreground(this->cursor_gc[i], c);
graphics_gc_set_linewidth(this->cursor_gc[i], 2);
if (c2) {
this->cursor_gc2[i]=graphics_gc_new(gra);
graphics_gc_set_foreground(this->cursor_gc2[i], c2);
}
if (animate) {
graphics_gc_set_dashes(this->cursor_gc[i], 2, (NUM_GC-i)*2, dash_list, 2);
if(this->cursor_gc2[i])
graphics_gc_set_dashes(this->cursor_gc2[i], 2, i*2, dash_list, 2);
} else {
graphics_gc_set_linewidth(this->cursor_gc[i], 2);
if(this->cursor_gc2[i])
graphics_gc_set_linewidth(this->cursor_gc2[i], 2);
break; // no need to create other GCs if we are not animating
}
}
if (animate)
this->animate_timer=g_timeout_add(250, (GSourceFunc)cursor_animate, (gpointer *)this);
dbg(2,"ret=%p\n", this);
return this;
}
void
cursor_destroy(struct cursor *this_)
{
int i;
if (this_->animate_timer)
g_source_remove(this_->animate_timer);
for (i=0;i<NUM_GC;i++)
if(this_->cursor_gc[i])
graphics_gc_destroy(this_->cursor_gc[i]);
if(this_->cursor_gc2[i])
graphics_gc_destroy(this_->cursor_gc2[i]);
g_free(this_);
}
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