cpython/RISCOS/Modules/drawfmodule.c at 2.7 · python-emscripten/cpython · GitHub

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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,Py_ssize_t 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,Py_ssize_t i)

{ PyErr_SetString(PyExc_IndexError,"drawf repetition not implemented");

return NULL;

}

static PyObject *drawf_item(PyDrawFObject *b,Py_ssize_t i)

{ PyDrawFObject *c;

Py_ssize_t 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,Py_ssize_t i,Py_ssize_t j)

{ PyDrawFObject *c;

Py_ssize_t 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,Py_ssize_t 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,Py_ssize_t i,Py_ssize_t 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,

(ssizeargfunc)drawf_repeat,

(ssizeargfunc)drawf_item,

(ssizessizeargfunc)drawf_slice,

(ssizeobjargproc)drawf_ass_item,

(ssizessizeobjargproc)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);

}

cpython/RISCOS/Modules/drawfmodule.c at 2.7 · python-emscripten/cpython · GitHub

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