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cpython/RISCOS/Modules/drawfmodule.c

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/* drawf DrawFile functions */
#include "oslib/os.h"
#include "oslib/osfile.h"
#include "oslib/drawfile.h"
#include "Python.h"
#include <limits.h>
#define PyDrawF_Check(op) ((op)->ob_type == &PyDrawFType)
#define HDRSIZE 40
#define GRPHDRSIZE 36
#define DRAWTYPE 0xaff
#define NEXT(d) ((drawfile_object*)((char*)(d)+(d)->size))
typedef struct
{ PyObject_HEAD
drawfile_diagram *drawf;
int size; /*length in bytes*/
int nobjs; /* no of objects */
} PyDrawFObject;
typedef struct dheader
{ char tag [4];
int major_version;
int minor_version;
char source [12];
os_box bbox;
} dheader;
static PyObject *DrawFError; /* Exception drawf.error */
static os_error *e;
static PyTypeObject PyDrawFType;
static dheader header=
{ {'D','r','a','w'},
201,0,
{'P','y','t','h','o','n',' ',' ',' ',' ',' ',' '},
{INT_MAX,INT_MAX,INT_MIN,INT_MIN}
};
static PyObject *drawf_oserror(void)
{ PyErr_SetString(DrawFError,e->errmess);
return 0;
}
static PyObject *drawf_error(char *s)
{ PyErr_SetString(DrawFError,s);
return 0;
}
/* DrawFile commands */
static void countobjs(PyDrawFObject *pd)
{ int k=0,q;
drawfile_diagram *dd=pd->drawf;
drawfile_object *d=dd->objects;
char *end=(char*)dd+pd->size;
pd->nobjs=-1;
while((char*)d<end)
{ k++;
q=d->size;
if(q<=0||q&3) return ;
d=NEXT(d);
}
if ((char*)d==end) pd->nobjs=k;
}
static drawfile_object *findobj(PyDrawFObject *pd,int n)
{ drawfile_diagram *dd=pd->drawf;
drawfile_object *d=dd->objects;
for(;n>0;n--) d=NEXT(d);
return d;
}
static PyDrawFObject* new(int size)
{ PyDrawFObject *b=PyObject_NEW(PyDrawFObject,&PyDrawFType);
if(!b) return NULL;
size+=HDRSIZE;
b->drawf=malloc(size);
if(!b->drawf)
{ Py_DECREF(b);
return (PyDrawFObject*)PyErr_NoMemory();
}
b->size=size;
return b;
}
static void extend(os_box *b,os_box *c)
{ if(b->x0>c->x0) b->x0=c->x0;
if(b->y0>c->y0) b->y0=c->y0;
if(b->x1<c->x1) b->x1=c->x1;
if(b->y1<c->y1) b->y1=c->y1;
}
static PyObject *DrawF_New(PyObject *self,PyObject *args)
{ PyDrawFObject *b;
if(!PyArg_ParseTuple(args,"")) return NULL;
b=new(0);
if(!b) return NULL;
*((dheader*)b->drawf)=header;
b->nobjs=0;
return (PyObject *)b;
}
static PyObject *DrawF_Load(PyObject *self,PyObject *args)
{ int size;
char *fname;
PyDrawFObject *b;
fileswitch_object_type ot;
if(!PyArg_ParseTuple(args,"s",&fname)) return NULL;
e=xosfile_read_no_path(fname,&ot,0,0,&size,0);
if(e) return drawf_oserror();
size-=HDRSIZE;
if(ot!=osfile_IS_FILE||size<0||size&3) return drawf_error("Bad draw file");
b=new(size);
if(!b) return NULL;
e=xosfile_load_stamped_no_path(fname,(byte*)(b->drawf),0,0,0,0,0);
if(e)
{ Py_DECREF(b);
return drawf_oserror();
}
countobjs(b);
if(b->nobjs>=0) return (PyObject *)b;
Py_DECREF(b);
return drawf_error("Corrupt draw file");
}
static PyObject *DrawF_Save(PyDrawFObject *self,PyObject *arg)
{ char *fname;
if(!PyArg_ParseTuple(arg,"s",&fname)) return NULL;
e=xosfile_save_stamped(fname,DRAWTYPE,
(byte*)(self->drawf),(byte*)(self->drawf)+self->size);
if (e) return drawf_oserror();
Py_INCREF(Py_None);return Py_None;
}
static PyObject *DrawF_Render(PyDrawFObject *self,PyObject *arg)
{ int flags,trans,clip,flat;
if(!PyArg_ParseTuple(arg,"iiii",&flags,&trans,&clip,&flat)) return NULL;
e=xdrawfile_render((drawfile_render_flags)flags,self->drawf,self->size,
(os_trfm*)trans,(os_box*)clip,flat);
if(e) return drawf_oserror();
Py_INCREF(Py_None);return Py_None;
}
static PyObject *DrawF_Path(PyDrawFObject *self,PyObject *arg)
{ PyObject *pl;
PyObject *dp=0;
os_colour fill;
os_colour outline;
int width,start=0;
drawfile_path_style style;
int size=40;
int n,i,element_count;
drawfile_diagram *diag;
drawfile_object *dobj;
drawfile_path *dpath;
draw_path *thepath;
draw_line_style line_style;
draw_dash_pattern *dash_pattern=0;
os_box *box;
long *pe;
if(!PyArg_ParseTuple(arg,"O!(iiii)|O!i",&PyList_Type,&pl,(int*)&fill,
(int*)&outline,&width,(int*)&style,&PyTuple_Type,&dp,&start)) return NULL;
if(dp)
{ element_count=PyTuple_Size(dp);
size+=4*element_count+8;
style.flags|=drawfile_PATH_DASHED;
}
else style.flags&=~drawfile_PATH_DASHED;
n=PyList_Size(pl);
size+=4*n+8;
for(i=0;i<n;i++) if(!PyInt_Check(PyList_GetItem(pl,i))) size+=4;
diag=realloc(self->drawf,self->size+size);
if(!diag) return PyErr_NoMemory();
self->drawf=diag;
dobj=(drawfile_object*)((char*)diag+self->size);
dobj->type=drawfile_TYPE_PATH;
dobj->size=size;
dpath=&dobj->data.path;
self->size+=size;
self->nobjs++;
box=&dpath->bbox;
dpath->fill=fill;dpath->outline=outline;
dpath->width=width;dpath->style=style;
pe=(long*)&(dpath->path);
if(dp)
{ dash_pattern=&(((drawfile_path_with_pattern*)dpath)->pattern);
dash_pattern->start=start;
dash_pattern->element_count=element_count;
for(i=0;i<element_count;i++)
{ dash_pattern->elements[i]=(int)PyInt_AsLong(PyTuple_GetItem(dp,i));
}
pe+=element_count+2;
}
thepath=(draw_path*)pe;
*pe++=draw_MOVE_TO;
for(i=0;i<n;i++)
{ PyObject *p=PyList_GetItem(pl,i);
if(PyInt_Check(p))
*pe++=PyInt_AsLong(p);
else
{
*pe++=PyInt_AsLong(PyTuple_GetItem(p,0));
*pe++=PyInt_AsLong(PyTuple_GetItem(p,1));
}
}
*pe=draw_END_PATH;
line_style.join_style=style.flags&3;
line_style.end_cap_style=(style.flags&3)>>2;
line_style.start_cap_style=(style.flags&3)>>4;
line_style.reserved=0;
line_style.mitre_limit=10;
line_style.start_cap_width=style.cap_width;
line_style.end_cap_width=style.cap_width;
line_style.start_cap_length=style.cap_length;
line_style.end_cap_length=style.cap_length;
e=xdraw_process_path(thepath,0x70000000,0,0,width,&line_style,dash_pattern,
(draw_output_path)((char*)box+0x80000000),0);
if(e) return drawf_oserror();
/* draw_process_path seems to have a bug:
If the bounding box size is zero, it returns 0x7FFFFFFF, ..., 0x80000000 instead of the
correct size. */
if (box->x0==0x7FFFFFFF)
{
/* path has zero extension, so forget it; it would be invisible anyway */
self->size-=size;
self->nobjs--;
diag=realloc(self->drawf,self->size);
if(!diag) return PyErr_NoMemory();
self->drawf=diag;
}
else
extend(&(diag->bbox),box);
Py_INCREF(Py_None);return Py_None;
}
static PyObject *DrawF_Text(PyDrawFObject *self,PyObject *arg)
{ os_colour fill,bg_hint;
drawfile_text_style style;
int xsize,ysize,x,y;
int size,len;
char *text;
drawfile_diagram *diag;
drawfile_object *dobj;
drawfile_text *dtext;
os_box *box;
if(!PyArg_ParseTuple(arg,"(ii)s(iiiii)",&x,&y,&text,
(int*)&fill,(int*)&bg_hint,(int*)&style,&xsize,&ysize)) return NULL;
len=strlen(text);
size=((len+4)&(~3))+52;
diag=realloc(self->drawf,self->size+size);
if(!diag) return PyErr_NoMemory();
self->drawf=diag;
dobj=(drawfile_object*)((char*)diag+self->size);
dobj->type=drawfile_TYPE_TEXT;
dobj->size=size;
dtext=&dobj->data.text;
self->size+=size;
self->nobjs++;
dtext->fill=fill;
dtext->bg_hint=bg_hint;
dtext->style=style;
dtext->xsize=xsize;
dtext->ysize=ysize;
dtext->base.x=x;
dtext->base.y=y;
memset(dtext->text,0,(len+4)&(~3));
sprintf(dtext->text,"%s",text);
box=&(dtext->bbox);
box->x0=x;box->y0=y;box->x1=x+len*xsize;box->y1=y+ysize;
extend(&(diag->bbox),box);
Py_INCREF(Py_None);return Py_None;
}
static PyObject *DrawF_TText(PyDrawFObject *self,PyObject *arg)
{ os_colour fill,bg_hint;
drawfile_text_style style;
int xsize,ysize,x,y;
int t1,t2,t3,t4,t5,t6;
int size,len;
char *text;
drawfile_diagram *diag;
drawfile_object *dobj;
drawfile_trfm_text *dtext;
os_box *box;
t1=1<<16;t2=0;
t3=0;t4=1<<16;
t5=t6=0;
if(!PyArg_ParseTuple(arg,"(ii)s(iiiii)|(iiiiii)",&x,&y,&text,
(int*)&fill,(int*)&bg_hint,(int*)&style,&xsize,&ysize,&t1,&t2,&t3,&t4,&t5,&t6)) return NULL;
len=strlen(text);
size=((len+4)&(~3))+52+28;
diag=realloc(self->drawf,self->size+size);
if(!diag) return PyErr_NoMemory();
self->drawf=diag;
dobj=(drawfile_object*)((char*)diag+self->size);
dobj->type=drawfile_TYPE_TRFM_TEXT;
dobj->size=size;
dtext=&dobj->data.trfm_text;
self->size+=size;
self->nobjs++;
dtext->trfm.entries[0][0]=t1;
dtext->trfm.entries[0][1]=t2;
dtext->trfm.entries[1][0]=t3;
dtext->trfm.entries[1][1]=t4;
dtext->trfm.entries[2][0]=t5;
dtext->trfm.entries[2][1]=t6;
dtext->flags=0;
dtext->fill=fill;
dtext->bg_hint=bg_hint;
dtext->style=style;
dtext->xsize=xsize;
dtext->ysize=ysize;
dtext->base.x=x;
dtext->base.y=y;
memset(dtext->text,0,(len+4)&(~3));
sprintf(dtext->text,"%s",text);
box=&(dtext->bbox);
box->x0=x;box->y0=y;box->x1=x+len*xsize;box->y1=y+ysize;
extend(&(diag->bbox),box);
Py_INCREF(Py_None);return Py_None;
}
static PyObject *DrawF_FontTable(PyDrawFObject *self,PyObject *arg)
{ int size=8,n=0;
PyObject *d,*key,*value;
drawfile_diagram *diag;
drawfile_object *dobj;
char *dtable;
if(!PyArg_ParseTuple(arg,"O!",&PyDict_Type,&d)) return NULL;
while(PyDict_Next(d,&n,&key,&value))
{ int m=PyString_Size(value);
if(m<0||!PyInt_Check(key)) return NULL;
size+=m+2;
}
size=(size+3)&(~3);
diag=realloc(self->drawf,self->size+size);
if(!diag) return PyErr_NoMemory();
self->drawf=diag;
dobj=(drawfile_object*)((char*)diag+self->size);
dobj->type=drawfile_TYPE_FONT_TABLE;
dobj->size=size;
dtable=(char*)(&dobj->data.font_table);
self->size+=size;
self->nobjs++;
memset(dtable,0,size-8);
n=0;
while(PyDict_Next(d,&n,&key,&value))
{ int m=PyString_Size(value);
*dtable=(char)PyInt_AsLong(key);
strcpy(dtable+1,PyString_AsString(value));
dtable+=m+2;
}
Py_INCREF(Py_None);return Py_None;
}
static PyObject *DrawF_Group(PyDrawFObject *self,PyObject *arg)
{ int size,n;
PyDrawFObject *g;
char *name="";
drawfile_diagram *diag;
drawfile_object *dobj;
drawfile_group *dgroup;
if(!PyArg_ParseTuple(arg,"O!|s",&PyDrawFType,(PyObject*)&g,&name))
return NULL;
size=g->size-4;
diag=realloc(self->drawf,self->size+size);
if(!diag) return PyErr_NoMemory();
self->drawf=diag;
self->nobjs++;
dobj=(drawfile_object*)((char*)diag+self->size);
self->size+=size;
dobj->type=drawfile_TYPE_GROUP;
dobj->size=g->size-4;
dgroup=&dobj->data.group;
dgroup->bbox=g->drawf->bbox;
memset(dgroup->name,' ',12);
n=strlen(name);
if(n>12) n=12;
memcpy(dgroup->name,name,n);
memcpy((char*)dgroup->objects,(char*)g->drawf+40,g->size-40);
extend(&(diag->bbox),&(dgroup->bbox));
Py_INCREF(Py_None);return Py_None;
}
static PyObject *DrawF_Find(PyDrawFObject *self,PyObject *arg)
{ int x,y,n=0;
int r=-1;
drawfile_object *d;
if(!PyArg_ParseTuple(arg,"ii|i",&x,&y,&n)) return NULL;
if(n<self->nobjs&&n>=0)
{ d=findobj(self,n);
while(n<self->nobjs)
{ if(x>=d->data.text.bbox.x0&&x<=d->data.text.bbox.x1&&
y>=d->data.text.bbox.y0&&y<=d->data.text.bbox.y1) { r=n;break;}
n++;
d=NEXT(d);
}
}
return PyInt_FromLong(r);
}
static PyObject *DrawF_Box(PyDrawFObject *self,PyObject *arg)
{ int n=-1;
os_box *box;
if(!PyArg_ParseTuple(arg,"|i",&n)) return NULL;
if(n>=self->nobjs|n<0) box=&(self->drawf->bbox);
else box=&(findobj(self,n)->data.text.bbox);
return Py_BuildValue("iiii",box->x0,box->y0,box->x1,box->y1);
}
static void SetBlock(drawfile_object *d,int size,int type,int offset,int value)
{ char *end=(char*)d+size;
printf("s%d t%d o%d v%d\n",size,type,offset,value);
for(;(char*)d<end;d=NEXT(d))
if(d->type==type) ((int*)(d))[offset]=value;
else if(d->type==drawfile_TYPE_GROUP)
SetBlock((drawfile_object*)&d->data.group.objects,
d->size,type,offset,value);
printf("SetBlock Done\n");
}
static PyObject *SetWord(PyDrawFObject *self,PyObject *arg,int type,int offset)
{ int n=PyTuple_Size(arg);
int m,value,q;
PyObject *par;
drawfile_object *e,*d=self->drawf->objects;
if(n==0) return drawf_error("Value Required");
par=PyTuple_GetItem(arg,0);
if(!PyInt_Check(par))
{ PyErr_SetString(PyExc_TypeError,"Int Required");
return 0;
}
value=(int)PyInt_AsLong(par);
if(n==1) SetBlock(d,self->size-HDRSIZE,type,offset,value);
else
{ for(m=1;m<n;m++)
{ par=PyTuple_GetItem(arg,m);
if(!PyInt_Check(par))
{ PyErr_SetString(PyExc_TypeError,"Int Required");
return 0;
}
q=(int)PyInt_AsLong(par);
if(q<0||q>=self->nobjs)
{ PyErr_SetString(PyExc_ValueError,"Object out of range");
return 0;
}
e=d;
for(;q>0;q--) e=NEXT(e);
if(e->type==type)
{ ((int*)(e))[offset]=value;
}
else if(e->type==drawfile_TYPE_GROUP)
SetBlock((drawfile_object*)&e->data.group.objects,
e->size-GRPHDRSIZE,type,offset,value);
}
}
Py_INCREF(Py_None);return Py_None;
}
static PyObject *DrawF_PathFill(PyDrawFObject *self,PyObject *arg)
{ return SetWord(self,arg,drawfile_TYPE_PATH,6);
}
static PyObject *DrawF_PathColour(PyDrawFObject *self,PyObject *arg)
{ return SetWord(self,arg,drawfile_TYPE_PATH,7);
}
static PyObject *DrawF_TextColour(PyDrawFObject *self,PyObject *arg)
{ return SetWord(self,arg,drawfile_TYPE_TEXT,6);
}
static PyObject *DrawF_TextBackground(PyDrawFObject *self,PyObject *arg)
{ return SetWord(self,arg,drawfile_TYPE_TEXT,7);
}
static struct PyMethodDef PyDrawF_Methods[]=
{
{ "render",(PyCFunction)DrawF_Render,1},
{ "save",(PyCFunction)DrawF_Save,1},
{ "path",(PyCFunction)DrawF_Path,1},
{ "text",(PyCFunction)DrawF_Text,1},
{ "ttext",(PyCFunction)DrawF_TText,1},
{ "fonttable",(PyCFunction)DrawF_FontTable,1},
{ "group",(PyCFunction)DrawF_Group,1},
{ "find",(PyCFunction)DrawF_Find,1},
{ "box",(PyCFunction)DrawF_Box,1},
{ "pathfill",(PyCFunction)DrawF_PathFill,1},
{ "pathcolour",(PyCFunction)DrawF_PathColour,1},
{ "textcolour",(PyCFunction)DrawF_TextColour,1},
{ "textbackground",(PyCFunction)DrawF_TextBackground,1},
{ NULL,NULL} /* sentinel */
};
static int drawf_len(PyDrawFObject *b)
{ return b->nobjs;
}
static PyObject *drawf_concat(PyDrawFObject *b,PyDrawFObject *c)
{ int size=b->size+c->size-2*HDRSIZE;
PyDrawFObject *p=new(size);
drawfile_diagram *dd;
drawfile_object *d;
int n;
if(!p) return NULL;
dd=p->drawf;
d=(drawfile_object*)((char*)dd+b->size);
memcpy((char*)dd,(char*)(b->drawf),b->size);
memcpy(d,(char*)(c->drawf)+HDRSIZE,c->size-HDRSIZE);
p->nobjs=b->nobjs+c->nobjs;
for(n=c->nobjs;n>0;n--)
{ extend(&(dd->bbox),&(d->data.path.bbox));
d=NEXT(d);
}
return (PyObject*)p;
}
static PyObject *drawf_repeat(PyDrawFObject *b,int i)
{ PyErr_SetString(PyExc_IndexError,"drawf repetition not implemented");
return NULL;
}
static PyObject *drawf_item(PyDrawFObject *b,int i)
{ PyDrawFObject *c;
int size;
drawfile_diagram *dd;
drawfile_object *d;
if(i<0||i>=b->nobjs)
{ PyErr_SetString(PyExc_IndexError,"drawf index out of range");
return NULL;
}
d=findobj(b,i);
size=(char*)findobj(b,i+1)-(char*)d;
c=new(size);
if(!c) return NULL;
dd=c->drawf;
*((dheader*)dd)=header;
memcpy(dd->objects,d,size);
c->nobjs=1;
extend(&(dd->bbox),&(d->data.path.bbox));
return (PyObject*)c;
}
static PyObject *drawf_slice(PyDrawFObject *b,int i,int j)
{ PyDrawFObject *c;
int size,n;
drawfile_diagram *dd;
drawfile_object *d;
if(i<0||j>b->nobjs)
{ PyErr_SetString(PyExc_IndexError,"drawf index out of range");
return NULL;
}
d=findobj(b,i);
size=(char*)findobj(b,j)-(char*)d;
c=new(size);
if(!c) return NULL;
dd=c->drawf;
*((dheader*)dd)=header;
memcpy(dd->objects,d,size);
c->nobjs=j-i;
for(n=j-i;n>0;n--)
{ extend(&(dd->bbox),&(d->data.path.bbox));
d=NEXT(d);
}
return (PyObject*)c;
}
static int drawf_ass_item(PyDrawFObject *b,int i,PyObject *v)
{ PyErr_SetString(PyExc_IndexError,"drawf ass not implemented");
return NULL;
}
/*{ if(i<0||4*i>=b->length)
{ PyErr_SetString(PyExc_IndexError,"drawf index out of range");
return -1;
}
if(!PyInt_Check(v))
{ PyErr_SetString(PyExc_TypeError,"drawf item must be integer");
return -1;
}
((long*)(b->drawf))[i]=PyInt_AsLong(v);
return 0;
}
*/
static int drawf_ass_slice(PyDrawFObject *b,int i,int j,PyObject *v)
{ PyErr_SetString(PyExc_IndexError,"drawf ass_slice not implemented");
return NULL;
}
static PySequenceMethods drawf_as_sequence=
{ (inquiry)drawf_len,
(binaryfunc)drawf_concat,
(intargfunc)drawf_repeat,
(intargfunc)drawf_item,
(intintargfunc)drawf_slice,
(intobjargproc)drawf_ass_item,
(intintobjargproc)drawf_ass_slice,
};
static PyObject *PyDrawF_GetAttr(PyDrawFObject *s,char *name)
{
if (!strcmp(name, "size")) return PyInt_FromLong((long)s->size);
if (!strcmp(name, "start")) return PyInt_FromLong((long)s->drawf);
if (!strcmp(name, "__members__"))
{ PyObject *list = PyList_New(2);
if (list)
{ PyList_SetItem(list, 0, PyString_FromString("size"));
PyList_SetItem(list, 1, PyString_FromString("start"));
if (PyErr_Occurred()) { Py_DECREF(list);list = NULL;}
}
return list;
}
return Py_FindMethod(PyDrawF_Methods, (PyObject*) s,name);
}
static void PyDrawF_Dealloc(PyDrawFObject *b)
{
if (b->drawf)
;
else
PyMem_DEL(b->drawf);
PyMem_DEL(b);
}
static PyTypeObject PyDrawFType=
{ PyObject_HEAD_INIT(&PyType_Type)
0, /*ob_size*/
"drawf", /*tp_name*/
sizeof(PyDrawFObject), /*tp_size*/
0, /*tp_itemsize*/
/* methods */
(destructor)PyDrawF_Dealloc, /*tp_dealloc*/
0, /*tp_print*/
(getattrfunc)PyDrawF_GetAttr, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_as_number*/
&drawf_as_sequence, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash*/
};
static PyMethodDef DrawFMethods[]=
{
{ "load",DrawF_Load,1},
{ "new",DrawF_New,1},
{ NULL,NULL} /* Sentinel */
};
void initdrawf()
{ PyObject *m, *d;
m = Py_InitModule("drawf", DrawFMethods);
d = PyModule_GetDict(m);
DrawFError=PyString_FromString("drawf.error");
PyDict_SetItemString(d,"error",DrawFError);
}
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