src/adg/adg-cairo-fallback.c

   1 /* ADG - Automatic Drawing Generation
   2  * Copyright (C) 2007-2019  Nicola Fontana <ntd at entidi.it>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA  02110-1301, USA.
  18  */
  19
  20
  21 /**
  22  * SECTION:adg-cairo-fallback
  23  * @title: Cairo wrappers
  24  * @short_description: GObject wrappers for cairo structs
  25  *
  26  * If GObject support has not been compiled in cairo, either by
  27  * explicitely disabling it or because the installed cairo version
  28  * does not provide them, a compatible selection of wrappers used
  29  * by ADG is provided anyway.
  30  *
  31  * Since: 1.0
  32  **/
  33
  34
  35 #include "adg-internal.h"
  36 #include <string.h>
  37 #include <math.h>
  38
  39 #include "adg-cairo-fallback.h"
  40
  41
  42 #if CAIRO_VERSION < CAIRO_VERSION_ENCODE(1, 14, 0)
  43
  44 void
  45 cairo_surface_set_device_scale(cairo_surface_t *surface,
  46                                double x_scale, double y_scale)
  47 {
  48 }
  49
  50 #endif /* cairo < 1.14.0 */
  51
  52
  53 #ifdef ADG_MISSING_GBOXED_MATRIX
  54
  55 GType
  56 cairo_gobject_matrix_get_type(void)
  57 {
  58     static GType matrix_type = 0;
  59
  60     if (G_UNLIKELY(matrix_type == 0))
  61         matrix_type = g_boxed_type_register_static("CairoMatrix",
  62                                                    (GBoxedCopyFunc) cairo_gobject_cairo_matrix_copy,
  63                                                    g_free);
  64
  65     return matrix_type;
  66 }
  67
  68 cairo_matrix_t *
  69 cairo_gobject_cairo_matrix_copy(const cairo_matrix_t *matrix)
  70 {
  71     return g_memdup(matrix, sizeof(cairo_matrix_t));
  72 }
  73
  74 #endif /* ADG_MISSING_GBOXED_MATRIX */
  75
  76
  77 #ifdef ADG_MISSING_GBOXED_PATTERN
  78
  79 GType
  80 cairo_gobject_pattern_get_type(void)
  81 {
  82     static GType pattern_type = 0;
  83
  84     if (G_UNLIKELY(pattern_type == 0))
  85         pattern_type = g_boxed_type_register_static("CairoPattern",
  86                                                     (GBoxedCopyFunc) cairo_pattern_reference,
  87                                                     (GBoxedFreeFunc) cairo_pattern_destroy);
  88
  89     return pattern_type;
  90 }
  91
  92 #endif /* ADG_MISSING_GBOXED_PATTERN */