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/*
-*- mode: c++; c-basic-offset: 4 -*-
*/
/*
* The Python Imaging Library.
* $Id$
*
*/
/*
This is needed for (at least) Tk 8.4.1, otherwise the signature of
** Tk_PhotoPutBlock changes.
*/
#
define
USE_COMPOSITELESS_PHOTO_PUT_BLOCK
#
include
<
Python.h
>
#
include
<
cstdlib
>
#
include
<
cstdio
>
#
include
<
sstream
>
#
include
"
py_converters.h
"
extern
"
C
"
{
#
ifdef
__APPLE__
#
ifdef
TK_FRAMEWORK
#
include
<
Tcl/tcl.h
>
#
include
<
Tk/tk.h
>
#
else
#
include
<
tk.h
>
#
endif
#
else
#
include
<
tk.h
>
#
endif
}
#
if
defined(_MSC_VER)
#
define
SIZE_T_FORMAT
"
%Iu
"
#
else
#
define
SIZE_T_FORMAT
"
%zu
"
#
endif
typedef
struct
{
PyObject_HEAD;
Tcl_Interp *interp;
} TkappObject;
static
int
PyAggImagePhoto
(ClientData clientdata, Tcl_Interp *interp,
int
argc,
char
**argv)
{
Tk_PhotoHandle photo;
Tk_PhotoImageBlock block;
PyObject *bufferobj;
//
vars for blitting
PyObject *bboxo;
size_t
aggl, bboxl;
bool
has_bbox;
uint8_t
*destbuffer;
int
destx, desty, destwidth, destheight, deststride;
//
unsigned long tmp_ptr;
long
mode;
long
nval;
if
(
Tk_MainWindow
(interp) ==
NULL
) {
//
Will throw a _tkinter.TclError with "this isn't a Tk application"
return
TCL_ERROR
;
}
if
(argc !=
5
) {
Tcl_AppendResult
(interp,
"
usage:
"
, argv[
0
],
"
destPhoto srcImage
"
, (
char
*)
NULL
);
return
TCL_ERROR
;
}
/*
get Tcl PhotoImage handle
*/
photo =
Tk_FindPhoto
(interp, argv[
1
]);
if
(photo ==
NULL
) {
Tcl_AppendResult
(interp,
"
destination photo must exist
"
, (
char
*)
NULL
);
return
TCL_ERROR
;
}
/*
get array (or object that can be converted to array) pointer
*/
if
(
sscanf
(argv[
2
],
SIZE_T_FORMAT
, &aggl) !=
1
) {
Tcl_AppendResult
(interp,
"
error casting pointer
"
, (
char
*)
NULL
);
return
TCL_ERROR
;
}
bufferobj = (PyObject *)aggl;
numpy::array_view<
uint8_t
,
3
> buffer;
try
{
buffer = numpy::array_view<
uint8_t
,
3
>(bufferobj);
}
catch
(...) {
Tcl_AppendResult
(interp,
"
buffer is of wrong type
"
, (
char
*)
NULL
);
PyErr_Clear
();
return
TCL_ERROR
;
}
int
srcheight = buffer.
dim
(
0
);
/*
XXX insert aggRenderer type check
*/
/*
get array mode (0=mono, 1=rgb, 2=rgba)
*/
mode =
atol
(argv[
3
]);
if
((mode !=
0
) && (mode !=
1
) && (mode !=
2
)) {
Tcl_AppendResult
(interp,
"
illegal image mode
"
, (
char
*)
NULL
);
return
TCL_ERROR
;
}
/*
check for bbox/blitting
*/
if
(
sscanf
(argv[
4
],
SIZE_T_FORMAT
, &bboxl) !=
1
) {
Tcl_AppendResult
(interp,
"
error casting pointer
"
, (
char
*)
NULL
);
return
TCL_ERROR
;
}
bboxo = (PyObject *)bboxl;
if
(bboxo !=
NULL
&& bboxo != Py_None) {
agg::rect_d rect;
if
(!
convert_rect
(bboxo, &rect)) {
return
TCL_ERROR
;
}
has_bbox =
true
;
destx = (
int
)rect.
x1
;
desty = srcheight - (
int
)rect.
y2
;
destwidth = (
int
)(rect.
x2
- rect.
x1
);
destheight = (
int
)(rect.
y2
- rect.
y1
);
deststride =
4
* destwidth;
destbuffer =
new
agg::int8u[deststride * destheight];
if
(destbuffer ==
NULL
) {
Tcl_AppendResult
(interp,
"
could not allocate memory
"
, (
char
*)
NULL
);
return
TCL_ERROR
;
}
for
(
int
i =
0
; i < destheight; ++i) {
memcpy
(destbuffer + (deststride * i),
&
buffer
(i + desty, destx,
0
),
deststride);
}
}
else
{
has_bbox =
false
;
destbuffer =
NULL
;
destx = desty = destwidth = destheight = deststride =
0
;
}
/*
setup tkblock
*/
block.
pixelSize
=
1
;
if
(mode ==
0
) {
block.
offset
[
0
] = block.
offset
[
1
] = block.
offset
[
2
] =
0
;
nval =
1
;
}
else
{
block.
offset
[
0
] =
0
;
block.
offset
[
1
] =
1
;
block.
offset
[
2
] =
2
;
if
(mode ==
1
) {
block.
offset
[
3
] =
0
;
block.
pixelSize
=
3
;
nval =
3
;
}
else
{
block.
offset
[
3
] =
3
;
block.
pixelSize
=
4
;
nval =
4
;
}
}
if
(has_bbox) {
block.
width
= destwidth;
block.
height
= destheight;
block.
pitch
= deststride;
block.
pixelPtr
= destbuffer;
Tk_PhotoPutBlock
(photo, &block, destx, desty, destwidth, destheight);
delete[]
destbuffer;
}
else
{
block.
width
= buffer.
dim
(
1
);
block.
height
= buffer.
dim
(
0
);
block.
pitch
= (
int
)block.
width
* nval;
block.
pixelPtr
= buffer.
data
();
/*
Clear current contents
*/
Tk_PhotoBlank
(photo);
/*
Copy opaque block to photo image, and leave the rest to TK
*/
Tk_PhotoPutBlock
(photo, &block,
0
,
0
, block.
width
, block.
height
);
}
return
TCL_OK
;
}
static
PyObject *
_pyobj_addr
(PyObject *self, PyObject *args)
{
PyObject *pyobj;
if
(!
PyArg_ParseTuple
(args,
"
O
"
, &pyobj)) {
return
NULL
;
}
return
Py_BuildValue
(
"
n
"
, (Py_ssize_t)pyobj);
}
static
PyObject *
_tkinit
(PyObject *self, PyObject *args)
{
Tcl_Interp *interp;
TkappObject *app;
Py_ssize_t arg;
int
is_interp;
if
(!
PyArg_ParseTuple
(args,
"
ni
"
, &arg, &is_interp)) {
return
NULL
;
}
if
(is_interp) {
interp = (Tcl_Interp *)arg;
}
else
{
/*
Do it the hard way. This will break if the TkappObject
layout changes
*/
app = (TkappObject *)arg;
interp = app->
interp
;
}
/*
This will bomb if interp is invalid...
*/
Tcl_CreateCommand
(interp,
"
PyAggImagePhoto
"
,
(Tcl_CmdProc *)PyAggImagePhoto,
(ClientData)
0
,
(Tcl_CmdDeleteProc *)
NULL
);
Py_INCREF
(Py_None);
return
Py_None;
}
static
PyMethodDef functions[] = {
/*
Tkinter interface stuff
*/
{
"
_pyobj_addr
"
, (PyCFunction)_pyobj_addr,
1
}, {
"
tkinit
"
, (PyCFunction)_tkinit,
1
},
{
NULL
,
NULL
}
/*
sentinel
*/
};
#
if
PY3K
static
PyModuleDef _tkagg_module = { PyModuleDef_HEAD_INIT,
"
_tkagg
"
,
"
"
, -
1
, functions,
NULL
,
NULL
,
NULL
,
NULL
};
PyMODINIT_FUNC
PyInit__tkagg
(
void
)
{
PyObject *m;
m =
PyModule_Create
(&_tkagg_module);
import_array
();
return
m;
}
#
else
PyMODINIT_FUNC
init_tkagg
(
void
)
{
import_array
();
Py_InitModule
(
"
_tkagg
"
, functions);
}
#
endif
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