diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/canvasselect.c | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/src/canvasselect.c b/src/canvasselect.c new file mode 100644 index 0000000..53a2a8f --- /dev/null +++ b/src/canvasselect.c @@ -0,0 +1,227 @@ + +/****************************************************** + * + * canvasselect - implementation file + * + * copyleft (c) IOhannes m zmölnig + * + * 2007:forum::für::umläute:2007 + * + * institute of electronic music and acoustics (iem) + * + ****************************************************** + * + * license: GNU General Public License v.2 + * + ******************************************************/ + + +/* + * this object allows to select other objects on the canvas + * it also allows to query the selection of the canvas + * + * it also adds a "select" message to the canvas + */ + +#include "m_pd.h" + +#include "g_canvas.h" + +/* ------------------------- canvasselect ---------------------------- */ + +static t_class *canvasselect_class; + +typedef struct _canvasselect +{ + t_object x_obj; + + t_canvas*x_canvas; +} t_canvasselect; + +static void canvasselect_bang(t_canvasselect *x) +{ + /* get the selection of the canvas */ + + + +} + + +static int canvasselect_doselect(t_glist*glist, int index) +{ + t_gobj*obj=NULL; + int i=index; + if(NULL==glist) { + return -1; + } + if(i<0) { + return -1; + } + + obj=glist->gl_list; + + while(i-- && obj) { + obj=obj->g_next; + } + + if(obj) + glist_select(glist, obj); + else { + return -1; + } + + return index; +} + +static void canvasselect_select(t_canvasselect*x, t_floatarg f) +{ + t_glist*glist=x->x_canvas; + int i=f; + if(canvasselect_doselect(x->x_canvas, i)<0) { + pd_error(x, "invalid selection %d", i); + } +} + +static void canvasselect_selectall(t_canvasselect*x) +{ + t_glist*glist=x->x_canvas; + if(glist)glist_selectall(glist); +} + +static void canvasselect_select_cb(t_canvasselect*x, t_symbol*s, int argc, t_atom*argv) +{ + if(argc) { + while(argc--){ + canvasselect_select(x, atom_getint(argv++)); + } + } else { + canvasselect_selectall(x); + } +} + + + +static int canvasselect_dodeselect(t_glist*glist, int index) +{ + t_gobj*obj=NULL; + int i=index; + if(NULL==glist) { + return -1; + } + if(i<0) { + return -1; + } + + obj=glist->gl_list; + + while(i-- && obj) { + obj=obj->g_next; + } + + if(obj) { + if(glist_isselected(glist, obj)) { + glist_deselect(glist, obj); + } else return index; + } else { + return -1; + } + + return index; +} + +static void canvasselect_deselect(t_canvasselect*x, t_floatarg f) +{ + t_glist*glist=x->x_canvas; + int i=f; + if(canvasselect_dodeselect(x->x_canvas, i)<0) { + pd_error(x, "invalid deselection %d", i); + } +} + +static void canvasselect_deselectall(t_canvasselect*x) +{ + if(NULL==x->x_canvas) { + return; + } + + glist_noselect((t_glist*)x->x_canvas); +} + + +static void canvasselect_deselect_cb(t_canvasselect*x, t_symbol*s, int argc, t_atom*argv) +{ + if(argc) { + while(argc--){ + canvasselect_deselect(x, atom_getint(argv++)); + } + } else { + canvasselect_deselectall(x); + } +} + +static void *canvasselect_new(t_floatarg f) +{ + t_canvasselect *x = (t_canvasselect *)pd_new(canvasselect_class); + t_glist *glist=(t_glist *)canvas_getcurrent(); + t_canvas *canvas=(t_canvas*)glist_getcanvas(glist); + int depth=(int)f; + + if(depth<0)depth=0; + + while(depth && canvas) { + canvas=canvas->gl_owner; + depth--; + } + + x->x_canvas = canvas; + + return (x); +} + +static void canvasselect_free(t_canvasselect*x) +{ + +} + +static void canvas_select_cb(t_canvas*x, t_float f) +{ + canvasselect_doselect(x, f); +} +static void canvas_selectall_cb(t_canvas*x) +{ + t_glist*glist=x; + if(glist)glist_selectall(glist); +} + +static void canvas_deselect_cb(t_canvas*x, t_float f) +{ + canvasselect_dodeselect(x, f); +} +static void canvas_deselectall_cb(t_canvas*x) +{ + t_glist*glist=x; + if(glist)glist_noselect(glist); +} +static void register_methods(void) +{ + if(NULL==canvas_class)return; + /* check whether we already have this function: zgetfn(canvasclass, gensym("select")) */ + if(NULL==zgetfn(&canvas_class, gensym("select"))) class_addmethod(canvas_class, (t_method)canvas_select_cb, gensym("select"), A_FLOAT, 0); + if(NULL==zgetfn(&canvas_class, gensym("selectall"))) class_addmethod(canvas_class, (t_method)canvas_selectall_cb, gensym("selectall"), 0); + if(NULL==zgetfn(&canvas_class, gensym("deselect"))) class_addmethod(canvas_class, (t_method)canvas_deselect_cb, gensym("deselect"), A_FLOAT, 0); + if(NULL==zgetfn(&canvas_class, gensym("deselectall"))) class_addmethod(canvas_class, (t_method)canvas_deselectall_cb, gensym("deselectall"), 0); +} + + +void canvasselect_setup(void) +{ + canvasselect_class = class_new(gensym("canvasselect"), + (t_newmethod)canvasselect_new, (t_method)canvasselect_free, + sizeof(t_canvasselect), 0, + A_DEFFLOAT, 0); + class_addbang(canvasselect_class, (t_method)canvasselect_bang); + class_addmethod(canvasselect_class, (t_method)canvasselect_select_cb, gensym("select"), A_GIMME, 0); + class_addmethod(canvasselect_class, (t_method)canvasselect_deselect_cb, gensym("deselect"), A_GIMME, 0); + + register_methods(); +} |