1 /* ADG - Automatic Drawing Generation
2 * Copyright (C) 2007,2008,2009,2010,2011,2012,2013 Nicola Fontana <ntd at entidi.it>
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.
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.
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.
22 * SECTION:adg-pango-style
23 * @short_description: A font style with pango support
25 * Adds pango support to the #AdgFontStyle class.
33 * All fields are private and should not be used directly.
34 * Use its public methods instead.
40 #include "adg-internal.h"
41 #include <pango/pango.h>
43 #include "adg-style.h"
44 #include "adg-dress.h"
45 #include "adg-dress-builtins.h"
46 #include "adg-font-style.h"
48 #include "adg-pango-style.h"
49 #include "adg-pango-style-private.h"
52 #define _ADG_OLD_STYLE_CLASS ((AdgStyleClass *) adg_pango_style_parent_class)
55 G_DEFINE_TYPE(AdgPangoStyle
, adg_pango_style
, ADG_TYPE_FONT_STYLE
)
58 static void _adg_invalidate (AdgStyle
*style
);
59 static void _adg_apply (AdgStyle
*style
,
65 adg_pango_style_class_init(AdgPangoStyleClass
*klass
)
67 AdgStyleClass
*style_class
;
69 style_class
= (AdgStyleClass
*) klass
;
71 g_type_class_add_private(klass
, sizeof(AdgPangoStylePrivate
));
73 style_class
->invalidate
= _adg_invalidate
;
74 style_class
->apply
= _adg_apply
;
78 adg_pango_style_init(AdgPangoStyle
*pango_style
)
80 AdgPangoStylePrivate
*data
= G_TYPE_INSTANCE_GET_PRIVATE(pango_style
,
82 AdgPangoStylePrivate
);
84 data
->font_description
= NULL
;
86 pango_style
->data
= data
;
91 * adg_pango_style_new:
93 * Constructs a new pango style initialized with default params.
95 * Returns: a newly created pango style
100 adg_pango_style_new(void)
102 return g_object_new(ADG_TYPE_PANGO_STYLE
, NULL
);
106 * adg_pango_style_get_description:
107 * @pango_style: an #AdgPangoStyle object
109 * Gets the #PangoFontDescription of @pango_style. The returned font is
110 * owned by @pango_style and must not be destroyed by the caller.
112 * Returns: the font description
116 PangoFontDescription
*
117 adg_pango_style_get_description(AdgPangoStyle
*pango_style
)
119 AdgPangoStylePrivate
*data
;
121 g_return_val_if_fail(ADG_IS_PANGO_STYLE(pango_style
), NULL
);
123 data
= pango_style
->data
;
125 if (data
->font_description
== NULL
) {
126 AdgFontStyle
*font_style
;
128 cairo_font_slant_t slant
;
129 cairo_font_weight_t weight
;
132 font_style
= (AdgFontStyle
*) pango_style
;
133 family
= adg_font_style_get_family(font_style
);
134 slant
= adg_font_style_get_slant(font_style
);
135 weight
= adg_font_style_get_weight(font_style
);
136 size
= adg_font_style_get_size(font_style
);
138 data
->font_description
= pango_font_description_new();
140 pango_font_description_set_family(data
->font_description
, family
);
143 case CAIRO_FONT_SLANT_NORMAL
:
144 pango_font_description_set_style(data
->font_description
,
147 case CAIRO_FONT_SLANT_ITALIC
:
148 pango_font_description_set_style(data
->font_description
,
151 case CAIRO_FONT_SLANT_OBLIQUE
:
152 pango_font_description_set_style(data
->font_description
,
153 PANGO_STYLE_OBLIQUE
);
156 g_warning(_("Unhandled slant value (%d)"), slant
);
160 case CAIRO_FONT_WEIGHT_NORMAL
:
161 pango_font_description_set_weight(data
->font_description
,
162 PANGO_WEIGHT_NORMAL
);
164 case CAIRO_FONT_WEIGHT_BOLD
:
165 pango_font_description_set_weight(data
->font_description
,
169 g_warning(_("Unhandled weight value (%d)"), weight
);
172 pango_font_description_set_size(data
->font_description
,
176 return data
->font_description
;
181 _adg_invalidate(AdgStyle
*style
)
183 AdgPangoStyle
*pango_style
;
184 AdgPangoStylePrivate
*data
;
186 pango_style
= (AdgPangoStyle
*) style
;
187 data
= pango_style
->data
;
189 if (data
->font_description
!= NULL
) {
190 pango_font_description_free(data
->font_description
);
191 data
->font_description
= NULL
;
194 if (_ADG_OLD_STYLE_CLASS
->invalidate
!= NULL
)
195 _ADG_OLD_STYLE_CLASS
->invalidate(style
);
199 _adg_apply(AdgStyle
*style
, AdgEntity
*entity
, cairo_t
*cr
)
201 AdgFontStyle
*font_style
;
202 AdgDress color_dress
;
204 font_style
= (AdgFontStyle
*) style
;
205 color_dress
= adg_font_style_get_color_dress(font_style
);
207 adg_entity_apply_dress(entity
, color_dress
, cr
);