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/* (C) Guenter Geiger <geiger@xdv.org> */
#include "m_pd.h"
#include "g_canvas.h"
/* ------------------------ gcanvas ----------------------------- */
#define DEFAULTSIZE 80
static t_class *gcanvas_class;
#define RECT 1
#define LINE 2
#define MAXELEM 1024
typedef struct _elem {
int x;
int y;
int w;
int h;
int g;
int type;
char* color;
} t_element;
typedef struct _gcanvas
{
t_object x_obj;
t_glist * x_glist;
t_outlet* out2;
t_outlet* out3;
int x_width;
int x_height;
int x;
int y;
t_element* x_element[MAXELEM];
int x_numelem;
} t_gcanvas;
/*
cv .. canvas
o .. object identifier
c .. element id
x,y,w,h .. coordinates
*/
static void rectangle(void* cv,void* o,int c,int x, int y,int w,int h,char* color) {
sys_vgui(".x%x.c create rectangle \
%d %d %d %d -tags %x%d -fill %s\n",cv,x,y,x+w,y+h,o,c,color);
}
static void move_object(void* cv,void* o,int c,int x, int y,int w,int h) {
sys_vgui(".x%x.c coords %x%d %d %d %d %d\n",
cv,o,c,x,y,x+w,y+h);
}
static void color_object(void* cv,void* o,int c,char* color) {
sys_vgui(".x%x.c itemconfigure %x%d -fill %s\n", cv,
o, c,color);
}
static void delete_object(void* cv,void* o,int c) {
sys_vgui(".x%x.c delete %x%d\n",
cv, o,c);
}
static void line(void* cv,void* o,int c,int x,int y,int w,int h,char* color) {
sys_vgui(".x%x.c create line \
%d %d %d %d -tags %x%d -fill %s\n",cv,x,y,x+w,y+h,o,c,color);
}
static void gcanvas_draw_element(t_gcanvas *x,int num)
{
t_element* e = x->x_element[num];
if (!e) post("gcanvas_draw_element assertion failed");
switch (e->type) {
case RECT:
rectangle(glist_getcanvas(x->x_glist),x,num,
x->x_obj.te_xpix + e->x,
x->x_obj.te_ypix + e->y,
e->w, e->h,e->color);
break;
case LINE:
line(glist_getcanvas(x->x_glist),x,num,
x->x_obj.te_xpix + e->x,
x->x_obj.te_ypix + e->y,
e->w, e->h,e->color);
break;
default:
post("gcanvas: unknown element");
}
}
static void gcanvas_move_element(t_gcanvas *x,int num)
{
t_element* e = x->x_element[num];
move_object(
glist_getcanvas(x->x_glist),x,num,
x->x_obj.te_xpix + e->x, x->x_obj.te_ypix + e->y,
e->w, e->h);
}
static void gcanvas_delete_element(t_gcanvas *x,int num)
{
delete_object(glist_getcanvas(x->x_glist),x,num);
}
static void gcanvas_color_element(t_gcanvas* x,int num,char* color)
{
t_element* e = x->x_element[num];
e->color = color;
color_object(glist_getcanvas(x->x_glist),x,num,color);
}
/* widget helper functions */
void gcanvas_drawme(t_gcanvas *x, t_glist *glist, int firsttime)
{
int i;
if (firsttime) {
for (i=0;i<x->x_numelem;i++)
gcanvas_draw_element(x,i);
}
else {
for (i=0;i<x->x_numelem;i++)
gcanvas_move_element(x,i);
}
{
/* outlets */
int n = 3;
int nplus, i;
nplus = (n == 1 ? 1 : n-1);
for (i = 0; i < n; i++)
{
int onset = x->x_obj.te_xpix + (x->x_width - IOWIDTH) * i / nplus;
if (firsttime)
sys_vgui(".x%x.c create rectangle %d %d %d %d -tags %xo%d\n",
glist_getcanvas(glist),
onset, x->x_obj.te_ypix + x->x_height - 1,
onset + IOWIDTH, x->x_obj.te_ypix + x->x_height,
x, i);
else
sys_vgui(".x%x.c coords %xo%d %d %d %d %d\n",
glist_getcanvas(glist), x, i,
onset, x->x_obj.te_ypix + x->x_height - 1,
onset + IOWIDTH, x->x_obj.te_ypix + x->x_height);
}
/* inlets */
n = 0;
nplus = (n == 1 ? 1 : n-1);
for (i = 0; i < n; i++)
{
int onset = x->x_obj.te_xpix + (x->x_width - IOWIDTH) * i / nplus;
if (firsttime)
sys_vgui(".x%x.c create rectangle %d %d %d %d -tags %xi%d\n",
glist_getcanvas(glist),
onset, x->x_obj.te_ypix,
onset + IOWIDTH, x->x_obj.te_ypix + 1,
x, i);
else
sys_vgui(".x%x.c coords %xi%d %d %d %d %d\n",
glist_getcanvas(glist), x, i,
onset, x->x_obj.te_ypix,
onset + IOWIDTH, x->x_obj.te_ypix + 1);
}
}
}
void gcanvas_erase(t_gcanvas* x,t_glist* glist)
{
int n,i;
for (i=0;i<x->x_numelem;i++)
gcanvas_delete_element(x,i);
n = 3;
while (n--) {
sys_vgui(".x%x.c delete %xo%d\n",glist_getcanvas(glist),x,n);
}
}
/* ------------------------ gcanvas widgetbehaviour----------------------------- */
static void gcanvas_getrect(t_gobj *z, t_glist *owner,
int *xp1, int *yp1, int *xp2, int *yp2)
{
int width, height;
t_gcanvas* s = (t_gcanvas*)z;
width = s->x_width;
height = s->x_height;
*xp1 = s->x_obj.te_xpix;
*yp1 = s->x_obj.te_ypix;
*xp2 = s->x_obj.te_xpix + width;
*yp2 = s->x_obj.te_ypix + height;
}
static void gcanvas_displace(t_gobj *z, t_glist *glist,
int dx, int dy)
{
t_gcanvas *x = (t_gcanvas *)z;
x->x_obj.te_xpix += dx;
x->x_obj.te_ypix += dy;
gcanvas_drawme(x, glist, 0);
canvas_fixlinesfor(glist,(t_text*) x);
}
static void gcanvas_select(t_gobj *z, t_glist *glist, int state)
{
t_gcanvas *x = (t_gcanvas *)z;
color_object(glist,x,0,state ? "blue" : x->x_element[0]->color);
}
static void gcanvas_activate(t_gobj *z, t_glist *glist, int state)
{
/* t_text *x = (t_text *)z;
t_rtext *y = glist_findrtext(glist, x);
if (z->g_pd != gatom_class) rtext_activate(y, state);*/
}
static void gcanvas_delete(t_gobj *z, t_glist *glist)
{
t_text *x = (t_text *)z;
canvas_deletelinesfor(glist, x);
}
static void gcanvas_vis(t_gobj *z, t_glist *glist, int vis)
{
t_gcanvas* x = (t_gcanvas*)z;
if (vis)
gcanvas_drawme(x, glist, 1);
else
gcanvas_erase(x,glist);
}
/* can we use the normal text save function ?? */
static void gcanvas_save(t_gobj *z, t_binbuf *b)
{
t_gcanvas *x = (t_gcanvas *)z;
binbuf_addv(b, "ssiisii", gensym("#X"),gensym("obj"),
(t_int)x->x_obj.te_xpix, (t_int)x->x_obj.te_ypix,
gensym("gcanvas"),x->x_width,x->x_height);
binbuf_addv(b, ";");
}
t_widgetbehavior gcanvas_widgetbehavior;
static void gcanvas_motion(t_gcanvas *x, t_floatarg dx, t_floatarg dy)
{
x->x += dx;
x->y += dy;
outlet_float(x->out2,x->y);
outlet_float(x->x_obj.ob_outlet,x->x);
}
void gcanvas_key(t_gcanvas *x, t_floatarg f)
{
post("key");
}
static void gcanvas_click(t_gcanvas *x,
t_floatarg xpos, t_floatarg ypos, t_floatarg shift, t_floatarg ctrl,
t_floatarg doit,int up)
{
glist_grab(x->x_glist, &x->x_obj.te_g, (t_glistmotionfn) gcanvas_motion,
(t_glistkeyfn) NULL, xpos, ypos);
x->x = xpos - x->x_obj.te_xpix;
x->y = ypos - x->x_obj.te_ypix;
outlet_float(x->out2,x->y);
outlet_float(x->x_obj.ob_outlet,x->x);
outlet_float(x->out3,0);
}
static int gcanvas_newclick(t_gobj *z, struct _glist *glist,
int xpix, int ypix, int shift, int alt, int dbl, int doit)
{
if (doit)
gcanvas_click((t_gcanvas *)z, (t_floatarg)xpix, (t_floatarg)ypix,
(t_floatarg)shift, 0, (t_floatarg)alt,dbl);
if (dbl) outlet_float(((t_gcanvas*)z)->out3,1);
return (1);
}
void gcanvas_size(t_gcanvas* x,t_floatarg w,t_floatarg h) {
x->x_width = w;
x->x_height = h;
gcanvas_drawme(x, x->x_glist, 0);
}
static void gcanvas_setwidget(void)
{
gcanvas_widgetbehavior.w_getrectfn = gcanvas_getrect;
gcanvas_widgetbehavior.w_displacefn = gcanvas_displace;
gcanvas_widgetbehavior.w_selectfn = gcanvas_select;
gcanvas_widgetbehavior.w_activatefn = gcanvas_activate;
gcanvas_widgetbehavior.w_deletefn = gcanvas_delete;
gcanvas_widgetbehavior.w_visfn = gcanvas_vis;
gcanvas_widgetbehavior.w_clickfn = gcanvas_newclick;
class_setsavefn(gcanvas_class,gcanvas_save);
}
static void gcanvas_rect(t_gcanvas* x,t_symbol* c,float xp,float y,float w,float h)
{
t_element* e = getbytes(sizeof(t_element));
x->x_element[x->x_numelem++] = e;
e->type = RECT;
e->x = xp;
e->y = y;
e->w = w;
e->h = h;
e->color = c->s_name;
gcanvas_draw_element(x,x->x_numelem-1);
}
static void gcanvas_line(t_gcanvas* x,t_symbol* c,float xp,float y,float w,float h)
{
if (x->x_numelem < MAXELEM-1) {
t_element* e = getbytes(sizeof(t_element));
x->x_element[x->x_numelem++] = e;
e->type = LINE;
e->x = xp;
e->y = y;
e->w = w;
e->h = h;
e->g = 1;
e->color = c->s_name;
gcanvas_draw_element(x,x->x_numelem-1);
}
}
static void gcanvas_move(t_gcanvas* x,float num,float xp,float y,float w,float h)
{
t_element* e = x->x_element[(int)num];
if (e) {
e->x = xp;
e->y = y;
e->w = w;
e->h = h;
gcanvas_move_element(x,(int)num);
}
}
static void gcanvas_color(t_gcanvas* x,t_symbol* c,float num)
{
gcanvas_color_element(x,(int)num,c->s_name);
}
void gcanvas_deletenum(t_gcanvas* x,float num)
{
int i = (int) num;
if (x->x_element[i]) {
gcanvas_delete_element(x,i);
freebytes(x->x_element[i],sizeof(t_element));
x->x_element[i] = NULL;
}
}
static void gcanvas_reset(t_gcanvas* x) {
int i;
for (i=1;i<x->x_numelem;i++)
gcanvas_deletenum(x,i);
x->x_numelem = 1;
}
static void *gcanvas_new(t_symbol* s,t_int ac,t_atom* at)
{
int i;
t_gcanvas *x = (t_gcanvas *)pd_new(gcanvas_class);
x->x_glist = (t_glist*) canvas_getcurrent();
for (i=0;i<MAXELEM;i++)
x->x_element[i] = NULL;
x->x_numelem = 0;
/* Fetch the width */
x->x_width = DEFAULTSIZE;
if (ac-- > 0) {
if (at->a_type != A_FLOAT)
error("gcanvas: wrong argument type");
else
x->x_width = atom_getfloat(at++);
if (x->x_width < 0 || x->x_width > 2000) {
error("gcanvas: unallowed width %f",x->x_width);
x->x_width = DEFAULTSIZE;
}
}
/* Fetch the height */
x->x_height = DEFAULTSIZE;
if (ac-- > 0) {
if (at->a_type != A_FLOAT)
error("gcanvas: wrong argument type");
else
x->x_height = atom_getfloat(at++);
if (x->x_height < 0 || x->x_height > 2000) {
error("gcanvas: unallowed height %f",x->x_height);
x->x_width = DEFAULTSIZE;
}
}
x->x_element[0] = getbytes(sizeof(t_element));
x->x_numelem++;
x->x_element[0]->type = RECT;
x->x_element[0]->x = 0;
x->x_element[0]->y = 0;
x->x_element[0]->w = x->x_width;
x->x_element[0]->h = x->x_height;
x->x_element[0]->color = "white";
outlet_new(&x->x_obj, &s_float);
x->out2 = outlet_new(&x->x_obj, &s_float);
x->out3 = outlet_new(&x->x_obj, &s_float);
return (x);
}
void gcanvas_setup(void)
{
gcanvas_class = class_new(gensym("gcanvas"), (t_newmethod)gcanvas_new, 0,
sizeof(t_gcanvas),0, A_GIMME,0);
class_addmethod(gcanvas_class, (t_method)gcanvas_click, gensym("click"),
A_FLOAT, A_FLOAT, A_FLOAT, A_FLOAT, A_FLOAT, 0);
class_addmethod(gcanvas_class, (t_method)gcanvas_size, gensym("size"),
A_FLOAT, A_FLOAT, 0);
class_addmethod(gcanvas_class, (t_method)gcanvas_line, gensym("line"),
A_SYMBOL, A_FLOAT, A_FLOAT, A_FLOAT,A_FLOAT,0);
class_addmethod(gcanvas_class, (t_method)gcanvas_rect, gensym("rect"),
A_SYMBOL, A_FLOAT, A_FLOAT, A_FLOAT,A_FLOAT,0);
class_addmethod(gcanvas_class, (t_method)gcanvas_move, gensym("move"),
A_FLOAT, A_FLOAT, A_FLOAT, A_FLOAT,A_FLOAT,0);
class_addmethod(gcanvas_class, (t_method)gcanvas_color, gensym("color"),
A_SYMBOL,A_FLOAT,0);
class_addmethod(gcanvas_class, (t_method)gcanvas_deletenum,gensym("delete"),
A_FLOAT,0);
class_addmethod(gcanvas_class, (t_method)gcanvas_reset,gensym("reset"),0);
gcanvas_setwidget();
class_setwidget(gcanvas_class,&gcanvas_widgetbehavior);
}
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