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/*************************************************************************
* Copyright (C) 2009-2011 Tavian Barnes <tavianator@tavianator.com> *
* *
* This file is part of The Dimension Python Module. *
* *
* The Dimension Python Module is free software; you can redistribute it *
* and/ or modify it under the terms of the GNU Lesser General Public *
* License as published by the Free Software Foundation; either version *
* 3 of the License, or (at your option) any later version. *
* *
* The Dimension Python Module 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 Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this program. If not, see *
* <http://www.gnu.org/licenses/>. *
*************************************************************************/
#include "dimension-python.h"
static int
dmnsn_py_Canvas_init(dmnsn_py_Canvas *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = { "width", "height", NULL };
Py_ssize_t width, height;
if (!PyArg_ParseTupleAndKeywords(args, kwds, "nn", kwlist, &width, &height))
return -1;
if (width < 0 || height < 0) {
PyErr_SetString(PyExc_ValueError, "Canvas dimensions must be positive");
return -1;
}
dmnsn_delete_canvas(self->canvas);
self->canvas = dmnsn_new_canvas(width, height);
DMNSN_INCREF(self->canvas);
dmnsn_clear_canvas(self->canvas, dmnsn_black);
return 0;
}
static void
dmnsn_py_Canvas_dealloc(dmnsn_py_Canvas *self)
{
dmnsn_delete_canvas(self->canvas);
Py_TYPE(self)->tp_free((PyObject *)self);
}
static PyObject *
dmnsn_py_Canvas_optimizePNG(dmnsn_py_Canvas *self)
{
if (dmnsn_png_optimize_canvas(self->canvas) != 0)
return PyErr_SetFromErrno(PyExc_OSError);
/* Re-clear the canvas to clear the optimizer too */
dmnsn_clear_canvas(self->canvas, dmnsn_black);
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *
dmnsn_py_Canvas_optimizeGL(dmnsn_py_Canvas *self)
{
if (dmnsn_gl_optimize_canvas(self->canvas) != 0)
return PyErr_SetFromErrno(PyExc_OSError);
/* Re-clear the canvas to clear the optimizer too */
dmnsn_clear_canvas(self->canvas, dmnsn_black);
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *
dmnsn_py_Canvas_clear(dmnsn_py_Canvas *self, PyObject *args)
{
dmnsn_py_Color *color;
if (!PyArg_ParseTuple(args, "O!", &dmnsn_py_ColorType, &color))
return NULL;
dmnsn_clear_canvas(self->canvas, color->c);
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *
dmnsn_py_Canvas_writePNG(dmnsn_py_Canvas *self, PyObject *args)
{
PyObject *filenameobj;
if (!PyArg_ParseTuple(args, "O&", PyUnicode_FSConverter, &filenameobj))
return NULL;
const char *filename = PyBytes_AS_STRING(filenameobj);
FILE *file = fopen(filename, "wb");
if (!file)
return PyErr_SetFromErrno(PyExc_OSError);
if (dmnsn_png_write_canvas(self->canvas, file) != 0)
return PyErr_SetFromErrno(PyExc_OSError);
if (fclose(file) != 0)
return PyErr_SetFromErrno(PyExc_OSError);
Py_DECREF(filenameobj);
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *
dmnsn_py_Canvas_drawGL(dmnsn_py_Canvas *self)
{
if (dmnsn_gl_write_canvas(self->canvas) != 0)
return PyErr_SetFromErrno(PyExc_OSError);
Py_INCREF(Py_None);
return Py_None;
}
static PyMethodDef dmnsn_py_Canvas_methods[] = {
{ "optimizePNG", (PyCFunction)dmnsn_py_Canvas_optimizePNG, METH_NOARGS,
"Optimize a canvas for PNG output" },
{ "optimizeGL", (PyCFunction)dmnsn_py_Canvas_optimizeGL, METH_NOARGS,
"Optimize a canvas for OpenGL output" },
{ "clear", (PyCFunction)dmnsn_py_Canvas_clear, METH_VARARGS,
"Clear a canvas with a solid color" },
{ "writePNG", (PyCFunction)dmnsn_py_Canvas_writePNG, METH_VARARGS,
"Write a canvas to a PNG file" },
{ "drawGL", (PyCFunction)dmnsn_py_Canvas_drawGL, METH_NOARGS,
"Draw a canvas to the screen with OpenGL" },
{ NULL }
};
static PyObject *
dmnsn_py_Canvas_get_width(dmnsn_py_Canvas *self, void *closure)
{
return PyLong_FromSize_t(self->canvas->width);
}
static PyObject *
dmnsn_py_Canvas_get_height(dmnsn_py_Canvas *self, void *closure)
{
return PyLong_FromSize_t(self->canvas->height);
}
static PyGetSetDef dmnsn_py_Canvas_getsetters[] = {
{ "width", (getter)dmnsn_py_Canvas_get_width, NULL, "Canvas width", NULL },
{ "height", (getter)dmnsn_py_Canvas_get_height, NULL, "Canvas height", NULL },
{ NULL }
};
PyTypeObject dmnsn_py_CanvasType = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "dimension.Canvas",
.tp_basicsize = sizeof(dmnsn_py_Canvas),
.tp_dealloc = (destructor)dmnsn_py_Canvas_dealloc,
.tp_flags = Py_TPFLAGS_DEFAULT,
.tp_doc = "Dimension canvas",
.tp_methods = dmnsn_py_Canvas_methods,
.tp_getset = dmnsn_py_Canvas_getsetters,
.tp_init = (initproc)dmnsn_py_Canvas_init,
};
bool
dmnsn_py_init_CanvasType(void)
{
dmnsn_py_CanvasType.tp_new = PyType_GenericNew;
return PyType_Ready(&dmnsn_py_CanvasType) >= 0;
}
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