path: root/image.c

#include <m_pd.h>
#include "g_canvas.h"
#include <unistd.h>
#include <string.h>
#include <stdio.h>

#ifdef _MSC_VER
#pragma warning( disable : 4244 )
#pragma warning( disable : 4305 )
#endif

/* ------------------------ image ----------------------------- */

static t_class *image_class;

typedef struct _image
{
     t_object x_obj;
     t_glist * x_glist;
     int x_width;
     int x_height;
    t_symbol*  x_image;
	 int x_type; //0=file 1=tk_image
     t_int  x_localimage; //localimage "img%x" done 
} t_image;

/* widget helper functions */

const char* image_get_filename(t_image *x,char *file)
{
	static char fname[MAXPDSTRING];
	char *bufptr;
	int fd;
	
	fd=open_via_path(canvas_getdir(glist_getcanvas(x->x_glist))->s_name, 
	    file, "",fname, &bufptr, MAXPDSTRING, 1);
	if(fd>0){
	  	fname[strlen(fname)]='/';
	  	//post("image file: %s",fname);
	  	close(fd);
	  	return fname;
	}
	else return 0;
}

void image_drawme(t_image *x, t_glist *glist, int firsttime)
{
     if (firsttime) {
	  if(x->x_type) {
	  	sys_vgui(".x%x.c create image %d %d -tags %xS\n", 
			glist_getcanvas(glist),
			text_xpix(&x->x_obj, glist), text_ypix(&x->x_obj, glist),x);
	  	sys_vgui(".x%x.c itemconfigure %xS -image %s\n", 
			glist_getcanvas(glist),x,x->x_image->s_name);
	  }
	  else {
		const char *fname=image_get_filename(x,x->x_image->s_name);
		if(!x->x_localimage) {
			sys_vgui("image create photo img%x\n",x);
			x->x_localimage=1;
		}
	  	if(fname) sys_vgui("img%x configure -file %s\n",x,fname);	  		
		sys_vgui(".x%x.c create image %d %d -image img%x -tags %xS\n", 
			glist_getcanvas(glist),
			text_xpix(&x->x_obj, glist), text_ypix(&x->x_obj, glist),x,x);
	  }
	  /* TODO callback from gui
	    sys_vgui("image_size logo");
	  */
     }     
     else {
	  sys_vgui(".x%x.c coords %xS \
%d %d\n",
		   glist_getcanvas(glist), x,
		   text_xpix(&x->x_obj, glist), text_ypix(&x->x_obj, glist));
     }

}


void image_erase(t_image* x,t_glist* glist)
{
     int n;
     sys_vgui(".x%x.c delete %xS\n",
	      glist_getcanvas(glist), x);

}
	


/* ------------------------ image widgetbehaviour----------------------------- */


static void image_getrect(t_gobj *z, t_glist *glist,
    int *xp1, int *yp1, int *xp2, int *yp2)
{
    int width, height;
    t_image* x = (t_image*)z;


    width = x->x_width;
    height = x->x_height;
    *xp1 = text_xpix(&x->x_obj, glist);
    *yp1 = text_ypix(&x->x_obj, glist);
    *xp2 = text_xpix(&x->x_obj, glist) + width;
    *yp2 = text_ypix(&x->x_obj, glist) + height;
}

static void image_displace(t_gobj *z, t_glist *glist,
    int dx, int dy)
{
    t_image *x = (t_image *)z;
    x->x_obj.te_xpix += dx;
    x->x_obj.te_ypix += dy;
    sys_vgui(".x%x.c coords %xSEL %d %d %d %d\n",
		   glist_getcanvas(glist), x,
		   text_xpix(&x->x_obj, glist), text_ypix(&x->x_obj, glist),
		   text_xpix(&x->x_obj, glist) + x->x_width, text_ypix(&x->x_obj, glist) + x->x_height);

    image_drawme(x, glist, 0);
    canvas_fixlinesfor(glist_getcanvas(glist),(t_text*) x);
}

static void image_select(t_gobj *z, t_glist *glist, int state)
{
     t_image *x = (t_image *)z;
     if (state) {
	  sys_vgui(".x%x.c create rectangle \
%d %d %d %d -tags %xSEL -outline blue\n",
		   glist_getcanvas(glist),
		   text_xpix(&x->x_obj, glist), text_ypix(&x->x_obj, glist),
		   text_xpix(&x->x_obj, glist) + x->x_width, text_ypix(&x->x_obj, glist) + x->x_height,
		   x);
     }
     else {
	  sys_vgui(".x%x.c delete %xSEL\n",
		   glist_getcanvas(glist), x);
     }



}


static void image_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 image_delete(t_gobj *z, t_glist *glist)
{
    t_text *x = (t_text *)z;
    //canvas_deletelinesfor(glist_getcanvas(glist), x);
    canvas_deletelinesfor(glist, x);
}

       
static void image_vis(t_gobj *z, t_glist *glist, int vis)
{
    t_image* s = (t_image*)z;
    if (vis)
	 image_drawme(s, glist, 1);
    else
	 image_erase(s,glist);
}

/* can we use the normal text save function ?? */

static void image_save(t_gobj *z, t_binbuf *b)
{
    t_image *x = (t_image *)z;
    binbuf_addv(b, "ssiissi", gensym("#X"),gensym("obj"),
		x->x_obj.te_xpix, x->x_obj.te_ypix,   
        atom_getsymbol(binbuf_getvec(x->x_obj.te_binbuf)),
		x->x_image,x->x_type);
    binbuf_addv(b, ";");
}


t_widgetbehavior   image_widgetbehavior;

void image_size(t_image* x,t_floatarg w,t_floatarg h) {
     x->x_width = w;
     x->x_height = h;
}

void image_color(t_image* x,t_symbol* col)
{
/*     outlet_bang(x->x_obj.ob_outlet); only bang if there was a bang .. 
       so color black does the same as bang, but doesn't forward the bang 
*/
}

void image_open(t_gobj *z,t_symbol* file)
{
    t_image* x = (t_image*)z;
	const char *fname;
	int oldtype=x->x_type;
	

	fname=image_get_filename(x,file->s_name);
	if(fname){
		x->x_image=file;
		x->x_type=0;
	 	if(glist_isvisible(x->x_glist)) {
			if(!x->x_localimage) {
				sys_vgui("image create photo img%x\n",x);
				x->x_localimage=1;
			}
			sys_vgui("img%x blank\n",x);
			sys_vgui("img%x configure -file %s\n",x,fname);
			if(oldtype) sys_vgui(".x%x.c itemconfigure %xS -image img%x\n",
							glist_getcanvas(x->x_glist),x,x);
		}
	}
}
	
void image_load(t_gobj *z,t_symbol* image,t_symbol* file)
{
    t_image* x = (t_image*)z;
	const char *fname;

	fname=image_get_filename(x,file->s_name);
	if(fname){
			sys_vgui("image create photo %s -file %s\n",image->s_name,fname);
	}
}
	
void image_set(t_gobj *z,t_symbol* image)
{
    t_image* x = (t_image*)z;
	
	x->x_image=image;
	x->x_type=1;
	
	if(glist_isvisible(x->x_glist)) {
	  	sys_vgui(".x%x.c itemconfigure %xS -image %s\n", 
			glist_getcanvas(x->x_glist),x,x->x_image->s_name);
	}
}
	

static void image_setwidget(void)
{
    image_widgetbehavior.w_getrectfn =     image_getrect;
    image_widgetbehavior.w_displacefn =    image_displace;
    image_widgetbehavior.w_selectfn =   image_select;
    image_widgetbehavior.w_activatefn =   image_activate;
    image_widgetbehavior.w_deletefn =   image_delete;
    image_widgetbehavior.w_visfn =   image_vis;
#if (PD_VERSION_MINOR > 31) 
    image_widgetbehavior.w_clickfn = NULL;
    image_widgetbehavior.w_propertiesfn = NULL; 
#endif
#if PD_MINOR_VERSION < 37
    image_widgetbehavior.w_savefn =   image_save;
#endif
}


static void *image_new(t_symbol* image,int type)
{
    t_image *x = (t_image *)pd_new(image_class);

    x->x_glist = (t_glist*) canvas_getcurrent();

    x->x_width = 15;
    x->x_height = 15;
	x->x_type=type;
	x->x_localimage=0;
	x->x_image = image;

   outlet_new(&x->x_obj, &s_float);
    return (x);
}

void image_setup(void)
{
    image_class = class_new(gensym("image"), (t_newmethod)image_new, 0,
				sizeof(t_image),0, A_DEFSYM,A_DEFFLOAT,0);

/*
    class_addmethod(image_class, (t_method)image_size, gensym("size"),
    	A_FLOAT, A_FLOAT, 0);

    class_addmethod(image_class, (t_method)image_color, gensym("color"),
    	A_SYMBOL, 0);
*/

    class_addmethod(image_class, (t_method)image_open, gensym("open"),
    	A_SYMBOL, 0);
    class_addmethod(image_class, (t_method)image_set, gensym("set"),
    	A_SYMBOL, 0);
    class_addmethod(image_class, (t_method)image_load, gensym("load"),
    	A_SYMBOL, A_SYMBOL, 0);

    image_setwidget();
    class_setwidget(image_class,&image_widgetbehavior);
#if PD_MINOR_VERSION >= 37
    class_setsavefn(image_class,&image_save);
#endif

}