gi/pygi-foreign-cairo.c

   1 /* -*- mode: C; c-basic-offset: 4; indent-tabs-mode: nil; -*- */
   2 /*
   3  * Copyright (c) 2010  Collabora Ltd. <http://www.collabora.co.uk/>
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a copy
   6  * of this software and associated documentation files (the "Software"), to
   7  * deal in the Software without restriction, including without limitation the
   8  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
   9  * sell copies of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #include <cairo.h>
  25 #include <Python.h>
  26
  27 #if PY_VERSION_HEX < 0x03000000
  28 #include <pycairo.h>
  29 #else
  30 #include <pycairo/py3cairo.h>
  31 #endif
  32
  33 Pycairo_CAPI_t *Pycairo_CAPI;
  34
  35 #include "pygi-foreign.h"
  36
  37 #include <pyglib-python-compat.h>
  38
  39 PyObject *
  40 cairo_context_to_arg (PyObject        *value,
  41                       GIInterfaceInfo *iface_info,
  42                       GITransfer       transfer,
  43                       GIArgument      *arg)
  44 {
  45     cairo_t *cr;
  46
  47     g_assert (transfer == GI_TRANSFER_NOTHING);
  48
  49     cr = PycairoContext_GET (value);
  50     if (!cr) {
  51         return NULL;
  52     }
  53
  54     arg->v_pointer = cr;
  55     Py_RETURN_NONE;
  56 }
  57
  58 PyObject *
  59 cairo_context_from_arg (GIInterfaceInfo *iface_info,
  60                         gpointer data)
  61 {
  62     cairo_t *context = (cairo_t*) data;
  63
  64     cairo_reference (context);
  65
  66     return PycairoContext_FromContext (context, &PycairoContext_Type, NULL);
  67 }
  68
  69 PyObject *
  70 cairo_context_release (GIBaseInfo *base_info,
  71                        gpointer    struct_)
  72 {
  73     cairo_destroy ( (cairo_t*) struct_);
  74     Py_RETURN_NONE;
  75 }
  76
  77
  78 PyObject *
  79 cairo_surface_to_arg (PyObject        *value,
  80                       GIInterfaceInfo *iface_info,
  81                       GITransfer       transfer,
  82                       GIArgument      *arg)
  83 {
  84     cairo_surface_t *surface;
  85
  86     g_assert (transfer == GI_TRANSFER_NOTHING);
  87
  88     surface = ( (PycairoSurface*) value)->surface;
  89     if (!surface) {
  90         PyErr_SetString (PyExc_ValueError, "Surface instance wrapping a NULL surface");
  91         return NULL;
  92     }
  93
  94     arg->v_pointer = surface;
  95     Py_RETURN_NONE;
  96 }
  97
  98 PyObject *
  99 cairo_surface_from_arg (GIInterfaceInfo *iface_info,
 100                         gpointer         data)
 101 {
 102     cairo_surface_t *surface = (cairo_surface_t*) data;
 103
 104     cairo_surface_reference (surface);
 105
 106     return PycairoSurface_FromSurface (surface, NULL);
 107 }
 108
 109 PyObject *
 110 cairo_surface_release (GIBaseInfo *base_info,
 111                        gpointer    struct_)
 112 {
 113     cairo_surface_destroy ( (cairo_surface_t*) struct_);
 114     Py_RETURN_NONE;
 115 }
 116
 117 static PyMethodDef _gi_cairo_functions[] = {};
 118 PYGLIB_MODULE_START(_gi_cairo, "_gi_cairo")
 119 {
 120     Pycairo_IMPORT;
 121     if (Pycairo_CAPI == NULL)
 122         return PYGLIB_MODULE_ERROR_RETURN;
 123
 124     pygi_register_foreign_struct ("cairo",
 125                                   "Context",
 126                                   cairo_context_to_arg,
 127                                   cairo_context_from_arg,
 128                                   cairo_context_release);
 129
 130     pygi_register_foreign_struct ("cairo",
 131                                   "Surface",
 132                                   cairo_surface_to_arg,
 133                                   cairo_surface_from_arg,
 134                                   cairo_surface_release);
 135 }
 136 PYGLIB_MODULE_END;