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gimp/plug-ins/pygimp/pygimp-tile.c

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/* -*- Mode: C; c-basic-offset: 4 -*-
Gimp-Python - allows the writing of Gimp plugins in Python.
Copyright (C) 1997-2002 James Henstridge <james@daa.com.au>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "pygimp.h"
#include <structmember.h>
/* maximum bits per pixel ... */
#define MAX_BPP 4
static PyObject *
tile_flush(PyGimpTile *self, PyObject *args)
{
if (!PyArg_ParseTuple(args, ":flush"))
return NULL;
gimp_tile_flush(self->tile);
Py_INCREF(Py_None);
return Py_None;
}
static PyMethodDef tile_methods[] = {
{"flush", (PyCFunction)tile_flush, METH_VARARGS},
{NULL, NULL} /* sentinel */
};
/* ---------- */
PyObject *
pygimp_tile_new(GimpTile *t, PyGimpDrawable *drw)
{
PyGimpTile *self;
self = PyObject_NEW(PyGimpTile, &PyGimpTile_Type);
if (self == NULL)
return NULL;
gimp_tile_ref(t);
self->tile = t;
Py_INCREF(drw);
self->drawable = drw;
return (PyObject *)self;
}
static void
tile_dealloc(PyGimpTile *self)
{
gimp_tile_unref(self->tile, FALSE);
Py_DECREF(self->drawable);
PyObject_DEL(self);
}
static PyObject *
tile_get_uint_field(PyGimpTile *self, void *closure)
{
gint offset = GPOINTER_TO_INT(closure);
guint value;
gchar *addr;
addr = (gchar *)self->tile;
addr += offset;
value = *(guint *)addr;
return PyInt_FromLong(value);
}
static PyObject *
tile_get_dirty(PyGimpTile *self, void *closure)
{
return PyInt_FromLong(self->tile->dirty);
}
static PyObject *
tile_get_shadow(PyGimpTile *self, void *closure)
{
return PyInt_FromLong(self->tile->shadow);
}
static PyObject *
tile_get_drawable(PyGimpTile *self, void *closure)
{
return pygimp_drawable_new(self->tile->drawable, 0);
}
#define OFF(x) GINT_TO_POINTER(offsetof(GimpTile, x))
static PyGetSetDef tile_getsets[] = {
{ "ewidth", (getter)tile_get_uint_field, 0, NULL, OFF(ewidth) },
{ "eheight", (getter)tile_get_uint_field, 0, NULL, OFF(eheight) },
{ "bpp", (getter)tile_get_uint_field, 0, NULL, OFF(bpp) },
{ "tile_num", (getter)tile_get_uint_field, 0, NULL, OFF(tile_num) },
{ "dirty", (getter)tile_get_dirty, 0, NULL },
{ "shadow", (getter)tile_get_shadow, 0, NULL },
{ "drawable", (getter)tile_get_drawable, 0, NULL },
{ NULL, (getter)0, (setter)0 }
};
#undef OFF
static PyObject *
tile_repr(PyGimpTile *self)
{
PyObject *s;
gchar *name;
name = gimp_drawable_get_name(self->tile->drawable->drawable_id);
if (self->tile->shadow)
s = PyString_FromFormat("<gimp.Tile for drawable '%s' (shadow)>",name);
else
s = PyString_FromFormat("<gimp.Tile for drawable '%s'>", name);
g_free(name);
return s;
}
static int
tile_length(PyGimpTile *self)
{
return self->tile->ewidth * self->tile->eheight;
}
static PyObject *
tile_subscript(PyGimpTile *self, PyObject *sub)
{
GimpTile *tile = self->tile;
int bpp = tile->bpp;
long x, y;
if (PyInt_Check(sub)) {
x = PyInt_AsLong(sub);
if (x < 0 || x >= tile->ewidth * tile->eheight) {
PyErr_SetString(PyExc_IndexError,"index out of range");
return NULL;
}
return PyString_FromStringAndSize(tile->data + bpp * x, bpp);
}
if (PyTuple_Check(sub)) {
if (!PyArg_ParseTuple(sub, "ll", &x, &y))
return NULL;
if (x < 0 || y < 0 || x >= tile->ewidth || y>=tile->eheight) {
PyErr_SetString(PyExc_IndexError,"index out of range");
return NULL;
}
return PyString_FromStringAndSize(tile->data + bpp * (x +
y * tile->ewidth), bpp);
}
PyErr_SetString(PyExc_TypeError, "tile subscript not int or 2-tuple");
return NULL;
}
static int
tile_ass_sub(PyGimpTile *self, PyObject *v, PyObject *w)
{
GimpTile *tile = self->tile;
int bpp = tile->bpp, i;
long x, y;
char *pix, *data;
if (w == NULL) {
PyErr_SetString(PyExc_TypeError,
"can not delete pixels in tile");
return -1;
}
if (!PyString_Check(w) && PyString_Size(w) == bpp) {
PyErr_SetString(PyExc_TypeError, "invalid subscript");
return -1;
}
pix = PyString_AsString(w);
if (PyInt_Check(v)) {
x = PyInt_AsLong(v);
if (x < 0 || x >= tile->ewidth * tile->eheight) {
PyErr_SetString(PyExc_IndexError,"index out of range");
return -1;
}
data = tile->data + x * bpp;
for (i = 0; i < bpp; i++)
data[i] = pix[i];
tile->dirty = TRUE;
return 0;
}
if (PyTuple_Check(v)) {
if (!PyArg_ParseTuple(v, "ll", &x, &y))
return -1;
if (x < 0 || y < 0 || x >= tile->ewidth || y>=tile->eheight) {
PyErr_SetString(PyExc_IndexError,"index out of range");
return -1;
}
data = tile->data + bpp * (x + y * tile->ewidth);
for (i = 0; i < bpp; i++)
data[i] = pix[i];
tile->dirty = TRUE;
return 0;
}
PyErr_SetString(PyExc_TypeError, "tile subscript not int or 2-tuple");
return -1;
}
static PyMappingMethods tile_as_mapping = {
(inquiry)tile_length, /*length*/
(binaryfunc)tile_subscript, /*subscript*/
(objobjargproc)tile_ass_sub, /*ass_sub*/
};
PyTypeObject PyGimpTile_Type = {
PyObject_HEAD_INIT(NULL)
0, /* ob_size */
"gimp.Tile", /* tp_name */
sizeof(PyGimpTile), /* tp_basicsize */
0, /* tp_itemsize */
/* methods */
(destructor)tile_dealloc, /* tp_dealloc */
(printfunc)0, /* tp_print */
(getattrfunc)0, /* tp_getattr */
(setattrfunc)0, /* tp_setattr */
(cmpfunc)0, /* tp_compare */
(reprfunc)tile_repr, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
&tile_as_mapping, /* tp_as_mapping */
(hashfunc)0, /* tp_hash */
(ternaryfunc)0, /* tp_call */
(reprfunc)0, /* tp_str */
(getattrofunc)0, /* tp_getattro */
(setattrofunc)0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT, /* tp_flags */
NULL, /* Documentation string */
(traverseproc)0, /* tp_traverse */
(inquiry)0, /* tp_clear */
(richcmpfunc)0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)0, /* tp_iter */
(iternextfunc)0, /* tp_iternext */
tile_methods, /* tp_methods */
0, /* tp_members */
tile_getsets, /* tp_getset */
(PyTypeObject *)0, /* tp_base */
(PyObject *)0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
(initproc)0, /* tp_init */
(allocfunc)0, /* tp_alloc */
(newfunc)0, /* tp_new */
};
/* End of code for Tile objects */
/* -------------------------------------------------------- */
static PyObject *
pr_resize(PyGimpPixelRgn *self, PyObject *args)
{
int x, y, w, h;
if (!PyArg_ParseTuple(args, "iiii:resize", &x, &y, &w, &h))
return NULL;
gimp_pixel_rgn_resize(&(self->pr), x, y, w, h);
Py_INCREF(Py_None);
return Py_None;
}
static PyMethodDef pr_methods[] = {
{"resize", (PyCFunction)pr_resize, METH_VARARGS},
{NULL, NULL} /* sentinel */
};
/* ---------- */
PyObject *
pygimp_pixel_rgn_new(PyGimpDrawable *drawable, int x, int y,
int width, int height, int dirty, int shadow)
{
PyGimpPixelRgn *self;
self = PyObject_NEW(PyGimpPixelRgn, &PyGimpPixelRgn_Type);
if (self == NULL)
return NULL;
gimp_pixel_rgn_init(&(self->pr), drawable->drawable, x, y, width, height,
dirty, shadow);
self->drawable = drawable;
Py_INCREF(drawable);
return (PyObject *)self;
}
static void
pr_dealloc(PyGimpPixelRgn *self)
{
Py_DECREF(self->drawable);
PyObject_DEL(self);
}
/* Code to access pr objects as mappings */
static int
pr_length(PyGimpPixelRgn *self)
{
PyErr_SetString(pygimp_error, "Can't get size of pixel region.");
return -1;
}
static PyObject *
pr_subscript(PyGimpPixelRgn *self, PyObject *key)
{
GimpPixelRgn *pr = &(self->pr);
int bpp = pr->bpp;
PyObject *x, *y;
int x1, y1, x2, y2, xs, ys;
if (!PyTuple_Check(key) || PyTuple_Size(key) != 2) {
PyErr_SetString(PyExc_TypeError,"subscript must be a 2-tuple.");
return NULL;
}
if (!PyArg_ParseTuple(key, "OO", &x, &y))
return NULL;
if (PyInt_Check(x)) {
x1 = PyInt_AsLong(x);
if (pr->x > x1 || x1 >= pr->x + pr->w) {
PyErr_SetString(PyExc_IndexError,
"x subscript out of range");
return NULL;
}
if (PyInt_Check(y)) {
char buf[MAX_BPP];
y1 = PyInt_AsLong(y);
if (pr->y > y1 || y1 >= pr->y + pr->h) {
PyErr_SetString(PyExc_IndexError,
"y subscript out of range");
return NULL;
}
gimp_pixel_rgn_get_pixel(pr, buf, x1, y1);
return PyString_FromStringAndSize(buf, bpp);
} else if (PySlice_Check(y))
if (PySlice_GetIndices((PySliceObject *)y,
pr->y + pr->h, &y1, &y2, &ys) ||
(y1 != 0 && pr->y > y1) ||
pr->y > y2 || ys != 1) {
PyErr_SetString(PyExc_IndexError,
"invalid y slice");
return NULL;
} else {
gchar *buf = g_new(gchar, bpp * (y2 - y1));
PyObject *ret;
if (y1 == 0) y1 = pr->y;
gimp_pixel_rgn_get_col(pr, buf, x1, y1, y2-y1);
ret = PyString_FromStringAndSize(buf, bpp * (y2 - y1));
g_free(buf);
return ret;
}
else {
PyErr_SetString(PyExc_TypeError,"invalid y subscript");
return NULL;
}
} else if (PySlice_Check(x)) {
if (PySlice_GetIndices((PySliceObject *)x, pr->x + pr->w,
&x1, &x2, &xs) || (x1 != 0 && pr->x > x1) ||
pr->x > x2 || xs != 1) {
PyErr_SetString(PyExc_IndexError, "invalid x slice");
return NULL;
}
if (x1 == 0) x1 = pr->x;
if (PyInt_Check(y)) {
char *buf;
PyObject *ret;
y1 = PyInt_AsLong(y);
if (pr->y > y1 || y1 >= pr->y + pr->h) {
PyErr_SetString(PyExc_IndexError,
"y subscript out of range");
return NULL;
}
buf = g_new(gchar, bpp * (x2 - x1));
gimp_pixel_rgn_get_row(pr, buf, x1, y1, x2 - x1);
ret = PyString_FromStringAndSize(buf, bpp * (x2-x1));
g_free(buf);
return ret;
} else if (PySlice_Check(y))
if (PySlice_GetIndices((PySliceObject *)y,
pr->y + pr->h, &y1, &y2, &ys) ||
(y1 != 0 && pr->y) > y1 ||
pr->y > y2 || ys != 1) {
PyErr_SetString(PyExc_IndexError,
"invalid y slice");
return NULL;
} else {
gchar *buf = g_new(gchar, bpp * (x2 - x1) * (y2 - y1));
PyObject *ret;
if (y1 == 0) y1 = pr->y;
gimp_pixel_rgn_get_rect(pr, buf, x1, y1,
x2 - x1, y2 - y1);
ret = PyString_FromStringAndSize(buf, bpp * (x2-x1) * (y2-y1));
g_free(buf);
return ret;
}
else {
PyErr_SetString(PyExc_TypeError,"invalid y subscript");
return NULL;
}
} else {
PyErr_SetString(PyExc_TypeError, "invalid x subscript");
return NULL;
}
}
static int
pr_ass_sub(PyGimpPixelRgn *self, PyObject *v, PyObject *w)
{
GimpPixelRgn *pr = &(self->pr);
int bpp = pr->bpp;
PyObject *x, *y;
char *buf;
int len, x1, x2, xs, y1, y2, ys;
if (w == NULL) {
PyErr_SetString(PyExc_TypeError, "can't delete subscripts.");
return -1;
}
if (!PyString_Check(w)) {
PyErr_SetString(PyExc_TypeError,
"must assign string to subscript");
return -1;
}
if (!PyTuple_Check(v) || PyTuple_Size(v) != 2) {
PyErr_SetString(PyExc_TypeError,"subscript must be a 2-tuple");
return -1;
}
if (!PyArg_ParseTuple(v, "OO", &x, &y))
return -1;
buf = PyString_AsString(w);
len = PyString_Size(w);
if (PyInt_Check(x)) {
x1 = PyInt_AsLong(x);
if (pr->x > x1 || x1 >= pr->x + pr->w) {
PyErr_SetString(PyExc_IndexError,
"x subscript out of range");
return -1;
}
if (PyInt_Check(y)) {
y1 = PyInt_AsLong(y);
if (pr->y > y1 || y1 >= pr->y + pr->h) {
PyErr_SetString(PyExc_IndexError,
"y subscript out of range");
return -1;
}
if (len != bpp) {
PyErr_SetString(PyExc_TypeError,
"string is wrong length");
return -1;
}
gimp_pixel_rgn_set_pixel(pr, buf, x1, y1);
return 0;
} else if (PySlice_Check(y)) {
if (PySlice_GetIndices((PySliceObject *)y,
pr->y + pr->h, &y1, &y2, &ys) ||
(y1 != 0 && pr->y > y1) ||
pr->y > y2 || ys != 1) {
PyErr_SetString(PyExc_IndexError,
"invalid y slice");
return -1;
}
if (y1 == 0) y1 = pr->y;
if (len != bpp * (y2 - y1)) {
PyErr_SetString(PyExc_TypeError,
"string is wrong length");
return -1;
}
gimp_pixel_rgn_set_col(pr, buf, x1, y1, y2 - y1);
return 0;
} else {
PyErr_SetString(PyExc_IndexError,"invalid y subscript");
return -1;
}
} else if (PySlice_Check(x)) {
if (PySlice_GetIndices((PySliceObject *)x, pr->x + pr->w,
&x1, &x2, &xs) || (x1 != 0 && pr->x > x1) ||
pr->x > x2 || xs != 1) {
PyErr_SetString(PyExc_IndexError, "invalid x slice");
return -1;
}
if (x1 == 0) x1 = pr->x;
if (PyInt_Check(y)) {
y1 = PyInt_AsLong(y);
if (pr->y > y1 || y1 >= pr->y + pr->h) {
PyErr_SetString(PyExc_IndexError,
"y subscript out of range");
return -1;
}
if (len != bpp * (x2 - x1)) {
PyErr_SetString(PyExc_TypeError,
"string is wrong length");
return -1;
}
gimp_pixel_rgn_set_row(pr, buf, x1, y1, x2 - x1);
return 0;
} else if (PySlice_Check(y)) {
if (PySlice_GetIndices((PySliceObject *)y,
pr->y + pr->h, &y1, &y2, &ys) ||
(y1 != 0 && pr->y > y1) ||
pr->y > y2 || ys != 1) {
PyErr_SetString(PyExc_IndexError,
"invalid y slice");
return -1;
}
if (y1 == 0) y1 = pr->y;
if (len != bpp * (x2 - x1) * (y2 - y1)) {
PyErr_SetString(PyExc_TypeError,
"string is wrong length");
return -1;
}
gimp_pixel_rgn_set_rect(pr, buf, x1, y1, x2-x1, y2-y1);
return 0;
} else {
PyErr_SetString(PyExc_TypeError,"invalid y subscript");
return -1;
}
} else {
PyErr_SetString(PyExc_TypeError, "invalid x subscript");
return -1;
}
return -1;
}
static PyMappingMethods pr_as_mapping = {
(inquiry)pr_length, /*mp_length*/
(binaryfunc)pr_subscript, /*mp_subscript*/
(objobjargproc)pr_ass_sub, /*mp_ass_subscript*/
};
/* -------------------------------------------------------- */
static PyObject *
pr_get_drawable(PyGimpPixelRgn *self, void *closure)
{
return pygimp_drawable_new(self->pr.drawable, 0);
}
static PyObject *
pr_get_uint_field(PyGimpPixelRgn *self, void *closure)
{
gint offset = GPOINTER_TO_INT(closure);
guint value;
gchar *addr;
addr = (gchar *)&self->pr;
addr += offset;
value = *(guint *)addr;
return PyInt_FromLong(value);
}
static PyObject *
pr_get_dirty(PyGimpPixelRgn *self, void *closure)
{
return PyInt_FromLong(self->pr.dirty);
}
static PyObject *
pr_get_shadow(PyGimpPixelRgn *self, void *closure)
{
return PyInt_FromLong(self->pr.shadow);
}
#define OFF(x) GINT_TO_POINTER(offsetof(GimpPixelRgn, x))
static PyGetSetDef pr_getsets[] = {
{ "drawable", (getter)pr_get_drawable, 0, NULL },
{ "bpp", (getter)pr_get_uint_field, 0, NULL, OFF(bpp) },
{ "rowstride", (getter)pr_get_uint_field, 0, NULL, OFF(rowstride) },
{ "x", (getter)pr_get_uint_field, 0, NULL, OFF(x) },
{ "y", (getter)pr_get_uint_field, 0, NULL, OFF(y) },
{ "w", (getter)pr_get_uint_field, 0, NULL, OFF(w) },
{ "h", (getter)pr_get_uint_field, 0, NULL, OFF(h) },
{ "dirty", (getter)pr_get_dirty, 0, NULL },
{ "shadow", (getter)pr_get_shadow, 0, NULL },
{ NULL, (getter)0, (setter)0 },
};
#undef OFF
static PyObject *
pr_repr(PyGimpPixelRgn *self)
{
PyObject *s;
gchar *name;
name = gimp_drawable_get_name(self->drawable->drawable->drawable_id);
s = PyString_FromFormat("<gimp.PixelRgn for drawable '%s'>", name);
g_free(name);
return s;
}
PyTypeObject PyGimpPixelRgn_Type = {
PyObject_HEAD_INIT(NULL)
0, /* ob_size */
"gimp.PixelRgn", /* tp_name */
sizeof(PyGimpPixelRgn), /* tp_basicsize */
0, /* tp_itemsize */
/* methods */
(destructor)pr_dealloc, /* tp_dealloc */
(printfunc)0, /* tp_print */
(getattrfunc)0, /* tp_getattr */
(setattrfunc)0, /* tp_setattr */
(cmpfunc)0, /* tp_compare */
(reprfunc)pr_repr, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
&pr_as_mapping, /* tp_as_mapping */
(hashfunc)0, /* tp_hash */
(ternaryfunc)0, /* tp_call */
(reprfunc)0, /* tp_str */
(getattrofunc)0, /* tp_getattro */
(setattrofunc)0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT, /* tp_flags */
NULL, /* Documentation string */
(traverseproc)0, /* tp_traverse */
(inquiry)0, /* tp_clear */
(richcmpfunc)0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)0, /* tp_iter */
(iternextfunc)0, /* tp_iternext */
pr_methods, /* tp_methods */
0, /* tp_members */
pr_getsets, /* tp_getset */
(PyTypeObject *)0, /* tp_base */
(PyObject *)0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
(initproc)0, /* tp_init */
(allocfunc)0, /* tp_alloc */
(newfunc)0, /* tp_new */
};
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