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-rw-r--r--src/region.c598
1 files changed, 598 insertions, 0 deletions
diff --git a/src/region.c b/src/region.c
new file mode 100644
index 0000000..2198ccd
--- /dev/null
+++ b/src/region.c
@@ -0,0 +1,598 @@
+/* -*- mode: C; c-basic-offset: 2 -*-
+ *
+ * Copyright © 2005,2010 Steve Chaplin
+ *
+ * This file is part of pycairo.
+ *
+ * Pycairo is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU Lesser General Public License version 3 as published
+ * by the Free Software Foundation.
+ *
+ * Pycairo 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 pycairo. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define PY_SSIZE_T_CLEAN
+#include <Python.h>
+#include "structmember.h"
+
+#include "config.h"
+#include "private.h"
+
+/* PycairoRectangleInt_FromRectangleInt
+ * Create a new PycairoRectangleInt from a cairo_rectangle_int_t
+ * rectangle_int - a cairo_rectangle_int_t to 'wrap' into a Python object.
+ * rectangle_int is unreferenced if the PycairoRectangleInt creation
+ * fails.
+ * Return value: New reference or NULL on failure
+ */
+PyObject *
+PycairoRectangleInt_FromRectangleInt (cairo_rectangle_int_t *rectangle_int) {
+ PyObject *o;
+
+ assert (rectangle_int != NULL);
+
+ o = PycairoRectangleInt_Type.tp_alloc (&PycairoRectangleInt_Type, 0);
+ if (o)
+ ((PycairoRectangleInt *)o)->rectangle_int = *rectangle_int;
+ return o;
+}
+
+static void
+rectangle_int_dealloc(PycairoRectangleInt *o) {
+#ifdef DEBUG
+ printf("rectangle_int_dealloc start\n");
+#endif
+ //o->ob_type->tp_free((PyObject *)o);
+ Py_TYPE(o)->tp_free(o);
+#ifdef DEBUG
+ printf("rectangle_int_dealloc end\n");
+#endif
+}
+
+static PyObject *
+rectangle_int_new(PyTypeObject *type, PyObject *args, PyObject *kwds) {
+ static char *kwlist[] = { "x", "y", "width", "height", NULL };
+ int x, y, w, h;
+ x = y = w = h = 0;
+ cairo_rectangle_int_t rect;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwds,
+ "|iiii:RectangleInt.__new__", kwlist,
+ &x, &y, &w, &h))
+ return NULL;
+
+ rect.x = x;
+ rect.y = y;
+ rect.width = w;
+ rect.height = h;
+
+ return PycairoRectangleInt_FromRectangleInt(&rect);
+}
+
+static PyObject *
+rectangle_int_str(PycairoRectangleInt *rect_o) {
+ PyObject *s;
+ cairo_rectangle_int_t *rect = &(rect_o->rectangle_int);
+ char buf[80];
+ PyOS_snprintf(buf, sizeof(buf), "cairo.RectangleInt(%d, %d, %d, %d)",
+ rect->x, rect->y, rect->width, rect->height);
+ s = PyUnicode_FromString(buf);
+ return s;
+}
+
+static PyObject *
+rectangle_int_richcompare(PycairoRectangleInt *self,
+ PycairoRectangleInt *other, int op) {
+ int res = 0;
+ PyObject *b;
+
+ if (op != Py_EQ && op != Py_NE) {
+ PyErr_SetString(PyExc_TypeError, "Only support testing for == or !=");
+ return NULL;
+ }
+ if (!PyObject_IsInstance((PyObject*)other,
+ (PyObject*)&PycairoRectangleInt_Type)) {
+ res = 0;
+ }
+ else if (
+ self->rectangle_int.x == other->rectangle_int.x &&
+ self->rectangle_int.y == other->rectangle_int.y &&
+ self->rectangle_int.width == other->rectangle_int.width &&
+ self->rectangle_int.height == other->rectangle_int.height
+ )
+ res = 1;
+ res = op == Py_NE ? !res : res;
+ b = res ? Py_True : Py_False;
+ Py_INCREF(b);
+
+ return b;
+}
+
+static PyMemberDef RectangleInt_members[] = {
+ {"x", T_INT, sizeof(PyObject), 0,
+ "X coordinate of the left side of the rectangle"},
+ {"y", T_INT, sizeof(PyObject)+sizeof(int), 0,
+ "Y coordinate of the the top side of the rectangle"},
+ {"width", T_INT, sizeof(PyObject)+sizeof(int)*2, 0,
+ "width of the rectangle"},
+ {"height", T_INT, sizeof(PyObject)+sizeof(int)*3, 0,
+ "height of the rectangle"},
+ {NULL}
+};
+
+PyTypeObject PycairoRectangleInt_Type = {
+ PyVarObject_HEAD_INIT(&PyType_Type, 0)
+ "cairo.RectangleInt", /* tp_name */
+ sizeof(PycairoRectangleInt), /* tp_basicsize */
+ 0, /* tp_itemsize */
+ (destructor)rectangle_int_dealloc, /* tp_dealloc */
+ 0, /* tp_print */
+ 0, /* tp_getattr */
+ 0, /* tp_setattr */
+ 0, /* tp_compare */
+ 0, /* tp_repr */
+ 0, /* tp_as_number */
+ 0, /* tp_as_sequence */
+ 0, /* tp_as_mapping */
+ 0, /* tp_hash */
+ 0, /* tp_call */
+ (reprfunc)rectangle_int_str, /* tp_str */
+ 0, /* tp_getattro */
+ 0, /* tp_setattro */
+ 0, /* tp_as_buffer */
+ Py_TPFLAGS_DEFAULT, /* tp_flags */
+ 0, /* tp_doc */
+ 0, /* tp_traverse */
+ 0, /* tp_clear */
+ (richcmpfunc)rectangle_int_richcompare, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ 0, /* tp_iter */
+ 0, /* tp_iternext */
+ 0, /* tp_methods */
+ RectangleInt_members, /* tp_members */
+ 0, /* tp_getset */
+ 0, /* tp_base */
+ 0, /* tp_dict */
+ 0, /* tp_descr_get */
+ 0, /* tp_descr_set */
+ 0, /* tp_dictoffset */
+ 0, /* tp_init */
+ 0, /* tp_alloc */
+ (newfunc)rectangle_int_new, /* tp_new */
+};
+
+/* PycairoRegion_FromRegion
+ * Create a new PycairoRegion from a cairo_region_t
+ * region - a cairo_region_t to 'wrap' into a Python object.
+ * region is unreferenced if the PycairoRegion creation fails, or if
+ * region is in an error status.
+ * Return value: New reference or NULL on failure
+ */
+PyObject *
+PycairoRegion_FromRegion (cairo_region_t *region) {
+ PyObject *o;
+
+ assert (region != NULL);
+
+ if (Pycairo_Check_Status (cairo_region_status(region))) {
+ cairo_region_destroy (region);
+ return NULL;
+ }
+
+ o = PycairoRegion_Type.tp_alloc (&PycairoRegion_Type, 0);
+ if (o)
+ ((PycairoRegion *)o)->region = region;
+ else
+ cairo_region_destroy (region);
+ return o;
+}
+
+static void
+region_dealloc(PycairoRegion *o) {
+#ifdef DEBUG
+ printf("region_dealloc start\n");
+#endif
+ if (o->region) {
+ cairo_region_destroy(o->region);
+ o->region = NULL;
+ }
+ //o->ob_type->tp_free((PyObject *)o);
+ Py_TYPE(o)->tp_free(o);
+#ifdef DEBUG
+ printf("region_dealloc end\n");
+#endif
+}
+
+static PyObject *
+region_new(PyTypeObject *type, PyObject *args, PyObject *kwds) {
+ PyObject *s = NULL;
+ PycairoRectangleInt *rect_obj = NULL;
+ cairo_region_t *region = NULL;
+ cairo_rectangle_int_t *rect = NULL;
+
+ if (PyArg_ParseTuple(args, "|O!:Region.__new__",
+ &PycairoRectangleInt_Type, &rect_obj)) {
+ if (rect_obj != NULL) {
+ region = cairo_region_create_rectangle(&(rect_obj->rectangle_int));
+ }
+ } else if (!PyArg_ParseTuple(args, "|O:Region.__new__", &s)) {
+ PyErr_SetString(PyExc_TypeError,
+ "argument must be a RectangleInt or a sequence of RectangleInt.");
+ return NULL;
+ }
+ PyErr_Clear(); /* Clear possible err in the 1st arg parser. */
+
+ /* list of rectangle_int or no args */
+ if (s != NULL) {
+ int i;
+ int rect_size;
+ PyObject *seq = NULL;
+ seq = PySequence_Fast (s,
+ "argument must be a RectangleInt or a sequence of RectangleInt.");
+ if (seq == NULL) {
+ return NULL;
+ }
+ rect_size = PySequence_Fast_GET_SIZE(seq);
+ rect = PyMem_Malloc (rect_size * sizeof(cairo_rectangle_int_t));
+ if (rect == NULL) {
+ Py_DECREF(seq);
+ return PyErr_NoMemory();
+ }
+
+ for(i=0; i<rect_size; i++) {
+ PyObject *obj_tmp = PySequence_Fast_GET_ITEM(seq, i);
+ if (PyObject_IsInstance(obj_tmp,
+ (PyObject*)&PycairoRectangleInt_Type) != 1) {
+ Py_DECREF(seq);
+ PyMem_Free(rect);
+ return NULL;
+ }
+ rect_obj = (PycairoRectangleInt*) obj_tmp;
+ rect[i] = rect_obj->rectangle_int;
+ }
+
+ region = cairo_region_create_rectangles(rect, rect_size);
+
+ Py_DECREF(seq);
+ PyMem_Free(rect);
+ }
+
+ if (region == NULL) {
+ region = cairo_region_create();
+ }
+
+ RETURN_NULL_IF_CAIRO_REGION_ERROR(region);
+ return PycairoRegion_FromRegion(region);
+}
+
+PyObject *
+region_copy (PycairoRegion *o) {
+ cairo_region_t *res;
+ Py_BEGIN_ALLOW_THREADS;
+ res = cairo_region_copy (o->region);
+ Py_END_ALLOW_THREADS;
+ RETURN_NULL_IF_CAIRO_REGION_ERROR(res);
+ return PycairoRegion_FromRegion(res);
+}
+
+
+PyObject *
+region_get_extents (PycairoRegion *o) {
+ cairo_rectangle_int_t rect;
+ Py_BEGIN_ALLOW_THREADS;
+ cairo_region_get_extents(o->region, &rect);
+ Py_END_ALLOW_THREADS;
+
+ return PycairoRectangleInt_FromRectangleInt(&rect);
+}
+
+
+PyObject *
+region_num_rectangles (PycairoRegion *o) {
+ int res;
+ Py_BEGIN_ALLOW_THREADS;
+ res = cairo_region_num_rectangles(o->region);
+ Py_END_ALLOW_THREADS;
+ return Py_BuildValue("i", res);
+}
+
+
+PyObject *
+region_get_rectangle (PycairoRegion *o, PyObject *args) {
+ cairo_rectangle_int_t rect;
+ int i;
+ int total;
+ if (!PyArg_ParseTuple (args, "i:Region.get_rectangle", &i))
+ return NULL;
+ total = cairo_region_num_rectangles(o->region);
+ if (i >= total || i < 0) {
+ if ( i < 0)
+ PyErr_SetString(PyExc_ValueError, "index must be a positive number");
+ else
+ PyErr_SetString(PyExc_ValueError, "index is to big for the region");
+ return NULL;
+ }
+ Py_BEGIN_ALLOW_THREADS;
+ cairo_region_get_rectangle(o->region, i, &rect);
+ Py_END_ALLOW_THREADS;
+ return PycairoRectangleInt_FromRectangleInt(&rect);
+}
+
+
+PyObject *
+region_is_empty (PycairoRegion *o) {
+ cairo_bool_t res;
+ PyObject *b;
+ Py_BEGIN_ALLOW_THREADS;
+ res = cairo_region_is_empty(o->region);
+ Py_END_ALLOW_THREADS;
+ b = res ? Py_True : Py_False;
+ Py_INCREF(b);
+ return b;
+}
+
+
+PyObject *
+region_contains_point (PycairoRegion *o, PyObject *args) {
+ int x, y;
+ cairo_bool_t res;
+ PyObject *b;
+ if (!PyArg_ParseTuple (args, "ii:Region.contains_point", &x, &y))
+ return NULL;
+ Py_BEGIN_ALLOW_THREADS;
+ res = cairo_region_contains_point(o->region, x, y);
+ Py_END_ALLOW_THREADS;
+ b = res ? Py_True : Py_False;
+ Py_INCREF(b);
+ return b;
+}
+
+
+PyObject *
+region_contains_rectangle (PycairoRegion *o, PyObject *args) {
+ cairo_region_overlap_t res;
+ PycairoRectangleInt *rect_int;
+ if (!PyArg_ParseTuple (args, "O!:Region.contains_rectangle",
+ &PycairoRectangleInt_Type, &rect_int))
+ return NULL;
+ Py_BEGIN_ALLOW_THREADS;
+ res = cairo_region_contains_rectangle(o->region, &(rect_int->rectangle_int));
+ Py_END_ALLOW_THREADS;
+ return Py_BuildValue("i", res);
+}
+
+
+PyObject *
+region_equal (PycairoRegion *o, PyObject *args) {
+ cairo_bool_t res;
+ PyObject *b;
+ PycairoRegion *region_obj;
+ if (!PyArg_ParseTuple (args, "O!:Region.equal",
+ &PycairoRegion_Type, &region_obj))
+ return NULL;
+ Py_BEGIN_ALLOW_THREADS;
+ res = cairo_region_equal (o->region, region_obj->region);
+ Py_END_ALLOW_THREADS;
+ b = res ? Py_True : Py_False;
+ Py_INCREF(b);
+ return b;
+}
+
+static PyObject *
+region_richcompare(PycairoRegion *self, PycairoRegion *other, int op) {
+ int res = 0;
+ PyObject *b;
+
+ if (op != Py_EQ && op != Py_NE) {
+ PyErr_SetString(PyExc_TypeError, "Only support testing for == or !=");
+ return NULL;
+ }
+ if (!PyObject_IsInstance((PyObject*)other, (PyObject*)&PycairoRegion_Type)) {
+ res = 0;
+ } else {
+ res = cairo_region_equal (self->region, other->region);
+ }
+
+ res = op == Py_NE ? !res : res;
+ b = res ? Py_True : Py_False;
+ Py_INCREF(b);
+
+ return b;
+}
+
+PyObject *
+region_translate (PycairoRegion *o, PyObject *args) {
+ int x, y;
+ if (!PyArg_ParseTuple (args, "ii:Region.translate", &x, &y))
+ return NULL;
+ Py_BEGIN_ALLOW_THREADS;
+ cairo_region_translate (o->region, x, y);
+ Py_END_ALLOW_THREADS;
+ Py_RETURN_NONE;
+}
+
+
+PyObject *
+region_intersect (PycairoRegion *o, PyObject *args) {
+ cairo_status_t res;
+ PyObject *other;
+ if (!PyArg_ParseTuple (args, "O:Region.intersect", &other))
+ return NULL;
+
+ if (PyObject_IsInstance(other, (PyObject*)&PycairoRegion_Type) == 1) {
+ Py_BEGIN_ALLOW_THREADS;
+ res = cairo_region_intersect(o->region,
+ ((PycairoRegion *)other)->region);
+ Py_END_ALLOW_THREADS;
+ } else if (PyObject_IsInstance(other,
+ (PyObject*)&PycairoRectangleInt_Type) == 1) {
+ Py_BEGIN_ALLOW_THREADS;
+ res = cairo_region_intersect_rectangle(o->region,
+ &(((PycairoRectangleInt *)other)->rectangle_int));
+ Py_END_ALLOW_THREADS;
+ } else {
+ PyErr_SetString(PyExc_TypeError,
+ "argument must be a Region or a RectangleInt.");
+ return NULL;
+ }
+
+ RETURN_NULL_IF_CAIRO_ERROR(res);
+ Py_RETURN_NONE;
+}
+
+PyObject *
+region_subtract (PycairoRegion *o, PyObject *args) {
+ cairo_status_t res;
+ PyObject *other;
+ if (!PyArg_ParseTuple (args, "O:Region.subtract", &other))
+ return NULL;
+
+ if (PyObject_IsInstance(other, (PyObject*)&PycairoRegion_Type) == 1) {
+ Py_BEGIN_ALLOW_THREADS;
+ res = cairo_region_subtract(o->region,
+ ((PycairoRegion *)other)->region);
+ Py_END_ALLOW_THREADS;
+ } else if (PyObject_IsInstance(other,
+ (PyObject*)&PycairoRectangleInt_Type) == 1) {
+ Py_BEGIN_ALLOW_THREADS;
+ res = cairo_region_subtract_rectangle(o->region,
+ &(((PycairoRectangleInt *)other)->rectangle_int));
+ Py_END_ALLOW_THREADS;
+ } else {
+ PyErr_SetString(PyExc_TypeError,
+ "argument must be a Region or a RectangleInt.");
+ return NULL;
+ }
+ RETURN_NULL_IF_CAIRO_ERROR(res);
+ Py_RETURN_NONE;
+}
+
+PyObject *
+region_union (PycairoRegion *o, PyObject *args) {
+ cairo_status_t res;
+ PyObject *other;
+ if (!PyArg_ParseTuple (args, "O:Region.union", &other))
+ return NULL;
+
+ if (PyObject_IsInstance(other, (PyObject*)&PycairoRegion_Type) == 1) {
+ Py_BEGIN_ALLOW_THREADS;
+ res = cairo_region_union(o->region,
+ ((PycairoRegion *)other)->region);
+ Py_END_ALLOW_THREADS;
+ } else if (PyObject_IsInstance(other,
+ (PyObject*)&PycairoRectangleInt_Type) == 1) {
+ Py_BEGIN_ALLOW_THREADS;
+ res = cairo_region_union_rectangle(o->region,
+ &(((PycairoRectangleInt *)other)->rectangle_int));
+ Py_END_ALLOW_THREADS;
+ } else {
+ PyErr_SetString(PyExc_TypeError,
+ "argument must be a Region or a RectangleInt.");
+ return NULL;
+ }
+ RETURN_NULL_IF_CAIRO_ERROR(res);
+ Py_RETURN_NONE;
+}
+
+PyObject *
+region_xor (PycairoRegion *o, PyObject *args) {
+ cairo_status_t res;
+ PyObject *other;
+ if (!PyArg_ParseTuple (args, "O:Region.xorg", &other))
+ return NULL;
+
+ if (PyObject_IsInstance(other, (PyObject*)&PycairoRegion_Type) == 1) {
+ Py_BEGIN_ALLOW_THREADS;
+ res = cairo_region_xor(o->region,
+ ((PycairoRegion *)other)->region);
+ Py_END_ALLOW_THREADS;
+ } else if (PyObject_IsInstance(other,
+ (PyObject*)&PycairoRectangleInt_Type) == 1) {
+ Py_BEGIN_ALLOW_THREADS;
+ res = cairo_region_xor_rectangle(o->region,
+ &(((PycairoRectangleInt *)other)->rectangle_int));
+ Py_END_ALLOW_THREADS;
+ } else {
+ PyErr_SetString(PyExc_TypeError,
+ "argument must be a Region or a RectangleInt.");
+ return NULL;
+ }
+ RETURN_NULL_IF_CAIRO_ERROR(res);
+ Py_RETURN_NONE;
+}
+
+static PyMethodDef region_methods[] = {
+ /* methods never exposed in a language binding:
+ * cairo_region_destroy()
+ * cairo_region_get_type()
+ * cairo_region_reference()
+ *
+ * cairo_region_status()
+ * - not needed since Pycairo handles status checking
+ *
+ * _(intersect/subtract/union/xor)_rectangle are merged with the region
+ * ones.
+ */
+ {"copy", (PyCFunction)region_copy, METH_NOARGS },
+ {"get_extents", (PyCFunction)region_get_extents, METH_NOARGS },
+ {"num_rectangles", (PyCFunction)region_num_rectangles, METH_NOARGS },
+ {"get_rectangle", (PyCFunction)region_get_rectangle, METH_VARARGS },
+ {"is_empty", (PyCFunction)region_is_empty, METH_NOARGS },
+ {"contains_point", (PyCFunction)region_contains_point, METH_VARARGS },
+ {"contains_rectangle", (PyCFunction)region_contains_rectangle,
+ METH_VARARGS },
+ {"equal", (PyCFunction)region_equal, METH_VARARGS },
+ {"translate", (PyCFunction)region_translate, METH_VARARGS },
+ {"intersect", (PyCFunction)region_intersect, METH_VARARGS },
+ {"subtract", (PyCFunction)region_subtract, METH_VARARGS },
+ {"union", (PyCFunction)region_union, METH_VARARGS },
+ {"xor", (PyCFunction)region_xor, METH_VARARGS },
+ {NULL, NULL, 0, NULL},
+};
+
+PyTypeObject PycairoRegion_Type = {
+ PyVarObject_HEAD_INIT(&PyType_Type, 0)
+ "cairo.Region", /* tp_name */
+ sizeof(PycairoRegion), /* tp_basicsize */
+ 0, /* tp_itemsize */
+ (destructor)region_dealloc, /* tp_dealloc */
+ 0, /* tp_print */
+ 0, /* tp_getattr */
+ 0, /* tp_setattr */
+ 0, /* tp_compare */
+ 0, /* tp_repr */
+ 0, /* tp_as_number */
+ 0, /* tp_as_sequence */
+ 0, /* tp_as_mapping */
+ 0, /* tp_hash */
+ 0, /* tp_call */
+ 0, /* tp_str */
+ 0, /* tp_getattro */
+ 0, /* tp_setattro */
+ 0, /* tp_as_buffer */
+ Py_TPFLAGS_DEFAULT, /* tp_flags */
+ 0, /* tp_doc */
+ 0, /* tp_traverse */
+ 0, /* tp_clear */
+ (richcmpfunc)region_richcompare, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ 0, /* tp_iter */
+ 0, /* tp_iternext */
+ region_methods, /* tp_methods */
+ 0, /* tp_members */
+ 0, /* tp_getset */
+ 0, /* tp_base */
+ 0, /* tp_dict */
+ 0, /* tp_descr_get */
+ 0, /* tp_descr_set */
+ 0, /* tp_dictoffset */
+ 0, /* tp_init */
+ 0, /* tp_alloc */
+ (newfunc)region_new, /* tp_new */
+};
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