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| 1 | +/* Helper functions for converting an agg image buffer to a gtk drawable |
| 2 | + efficiently |
| 3 | +*/ |
| 4 | +#include <Python.h> |
| 5 | +#include <pygobject.h> |
| 6 | +#include <pygtk/pygtk.h> |
| 7 | +#include <cstring> |
| 8 | +#include <cerrno> |
| 9 | +#include <cstdio> |
| 10 | + |
| 11 | +#include "_backend_agg.h" |
| 12 | + |
| 13 | +static PyTypeObject *PyGObject_Type=NULL; |
| 14 | + |
| 15 | + |
| 16 | +static PyObject * |
| 17 | +_agg_to_gtk_drawable(PyObject *self, PyObject *args) { |
| 18 | + |
| 19 | + PyGObject *py_drawable = NULL; |
| 20 | + GdkDrawable *drawable = NULL; |
| 21 | + GdkGC* gc = NULL; |
| 22 | + |
| 23 | + |
| 24 | + RendererAggObject* aggRenderer; |
| 25 | + |
| 26 | + if (!PyArg_ParseTuple(args, "O!O", PyGObject_Type, |
| 27 | + &py_drawable, &aggRenderer)) |
| 28 | + return NULL; |
| 29 | + |
| 30 | + drawable = GDK_DRAWABLE(py_drawable->obj); |
| 31 | + gc = gdk_gc_new(drawable); |
| 32 | + |
| 33 | + gdk_draw_rgb_32_image(drawable, gc, 0, 0, |
| 34 | + aggRenderer->rbase->width(), |
| 35 | + aggRenderer->rbase->height(), |
| 36 | + GDK_RGB_DITHER_NORMAL, |
| 37 | + aggRenderer->buffer, |
| 38 | + aggRenderer->rbase->width()*4); |
| 39 | + |
| 40 | + Py_INCREF(Py_None); |
| 41 | + return Py_None; |
| 42 | +} |
| 43 | + |
| 44 | + |
| 45 | + |
| 46 | + |
| 47 | + |
| 48 | +static struct PyMethodDef _gtkagg_methods[] = { |
| 49 | + {"agg_to_gtk_drawable", (PyCFunction)_agg_to_gtk_drawable, METH_VARARGS, |
| 50 | + "Draw to a gtk drawable from a agg buffer."}, |
| 51 | + {NULL, NULL} /* sentinel */ |
| 52 | +}; |
| 53 | + |
| 54 | + |
| 55 | +extern "C" |
| 56 | +DL_EXPORT(void) init_gtkagg(void) |
| 57 | +{ |
| 58 | + PyObject *module, *d; |
| 59 | + |
| 60 | + |
| 61 | + |
| 62 | + init_pygobject(); |
| 63 | + init_pygtk(); |
| 64 | + /* Create the module and add the functions */ |
| 65 | + Py_InitModule("_gtkagg", _gtkagg_methods); |
| 66 | + module = PyImport_ImportModule("gobject"); |
| 67 | + if (module) { |
| 68 | + PyGObject_Type = |
| 69 | + (PyTypeObject*)PyObject_GetAttrString(module, "GObject"); |
| 70 | + Py_DECREF(module); |
| 71 | + } |
| 72 | + /* Add some symbolic constants to the module */ |
| 73 | + d = PyModule_GetDict(module); |
| 74 | + ErrorObject = PyString_FromString("_gtkagg.error"); |
| 75 | + PyDict_SetItemString(d, "error", ErrorObject); |
| 76 | + |
| 77 | + /* Check for errors */ |
| 78 | + if (PyErr_Occurred()) |
| 79 | + Py_FatalError("can't initialize module _gtkagg"); |
| 80 | +} |
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