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1 : : /*
2 : : * Copyright (C) 2011-2013 Jiri Techet <techet@gmail.com>
3 : : * Copyright (C) 2019 Marcus Lundblad <ml@update.uu.se>
4 : : *
5 : : * This library is free software; you can redistribute it and/or
6 : : * modify it under the terms of the GNU Lesser General Public
7 : : * License as published by the Free Software Foundation; either
8 : : * version 2.1 of the License, or (at your option) any later version.
9 : : *
10 : : * This library is distributed in the hope that it will be useful,
11 : : * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 : : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 : : * Lesser General Public License for more details.
14 : : *
15 : : * You should have received a copy of the GNU Lesser General Public
16 : : * License along with this library; if not, write to the Free Software
17 : : * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 : : */
19 : :
20 : : /**
21 : : * ShumateLayer:
22 : : *
23 : : * Every layer (overlay that moves together with the map) has to inherit this
24 : : * class and implement its virtual methods.
25 : : *
26 : : * You can use the same layer to display many types of maps. In Shumate they
27 : : * are called map sources. You can change the [property@MapLayer:map-source]
28 : : * property at any time to replace the current displayed map.
29 : : */
30 : :
31 : : #include "shumate-layer.h"
32 : :
33 : : enum
34 : : {
35 : : PROP_VIEWPORT = 1,
36 : : N_PROPERTIES
37 : : };
38 : :
39 : : static GParamSpec *obj_properties[N_PROPERTIES] = { NULL, };
40 : :
41 : : typedef struct {
42 : : ShumateViewport *viewport;
43 : : } ShumateLayerPrivate;
44 : :
45 [ + + + - ]: 576 : G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (ShumateLayer, shumate_layer, GTK_TYPE_WIDGET)
46 : :
47 : : static void
48 : 22 : shumate_layer_set_property (GObject *object,
49 : : guint property_id,
50 : : const GValue *value,
51 : : GParamSpec *pspec)
52 : : {
53 : 22 : ShumateLayer *self = SHUMATE_LAYER (object);
54 : 22 : ShumateLayerPrivate *priv = shumate_layer_get_instance_private (self);
55 : :
56 [ + - ]: 22 : switch (property_id)
57 : : {
58 : 22 : case PROP_VIEWPORT:
59 : 22 : priv->viewport = g_value_dup_object (value);
60 : 22 : break;
61 : :
62 : 0 : default:
63 : 0 : G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
64 : 0 : break;
65 : : }
66 : 22 : }
67 : :
68 : : static void
69 : 0 : shumate_layer_get_property (GObject *object,
70 : : guint property_id,
71 : : GValue *value,
72 : : GParamSpec *pspec)
73 : : {
74 : 0 : ShumateLayer *self = SHUMATE_LAYER (object);
75 : 0 : ShumateLayerPrivate *priv = shumate_layer_get_instance_private (self);
76 : :
77 [ # # ]: 0 : switch (property_id)
78 : : {
79 : 0 : case PROP_VIEWPORT:
80 : 0 : g_value_set_object (value, priv->viewport);
81 : 0 : break;
82 : :
83 : 0 : default:
84 : 0 : G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
85 : 0 : break;
86 : : }
87 : 0 : }
88 : :
89 : : static void
90 : 10 : shumate_layer_dispose (GObject *object)
91 : : {
92 : 10 : ShumateLayerPrivate *priv = shumate_layer_get_instance_private (SHUMATE_LAYER (object));
93 : :
94 [ + - ]: 10 : g_clear_object (&priv->viewport);
95 : :
96 : 10 : G_OBJECT_CLASS (shumate_layer_parent_class)->dispose (object);
97 : 10 : }
98 : :
99 : : static void
100 : 22 : shumate_layer_constructed (GObject *object)
101 : : {
102 : 22 : ShumateLayerPrivate *priv = shumate_layer_get_instance_private (SHUMATE_LAYER (object));
103 : :
104 [ - + ]: 22 : if (!priv->viewport)
105 : 0 : priv->viewport = shumate_viewport_new ();
106 : :
107 : 22 : G_OBJECT_CLASS (shumate_layer_parent_class)->constructed (object);
108 : 22 : }
109 : :
110 : : static gboolean
111 : 0 : shumate_layer_contains (GtkWidget *widget,
112 : : double x,
113 : : double y)
114 : : {
115 : : /* This allows mouse events on the empty space between markers in this layer
116 : : * to fall through to lower layers. */
117 : 0 : return FALSE;
118 : : }
119 : :
120 : : static void
121 : 5 : shumate_layer_class_init (ShumateLayerClass *klass)
122 : : {
123 : 5 : GObjectClass *object_class = G_OBJECT_CLASS (klass);
124 : 5 : GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
125 : :
126 : 5 : object_class->set_property = shumate_layer_set_property;
127 : 5 : object_class->get_property = shumate_layer_get_property;
128 : 5 : object_class->dispose = shumate_layer_dispose;
129 : 5 : object_class->constructed = shumate_layer_constructed;
130 : :
131 : 5 : widget_class->contains = shumate_layer_contains;
132 : :
133 : 10 : obj_properties[PROP_VIEWPORT] =
134 : 5 : g_param_spec_object ("viewport",
135 : : "Viewport",
136 : : "The viewport used to display the layer",
137 : : SHUMATE_TYPE_VIEWPORT,
138 : : G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
139 : :
140 : 5 : g_object_class_install_properties (object_class,
141 : : N_PROPERTIES,
142 : : obj_properties);
143 : :
144 : 5 : gtk_widget_class_set_css_name (widget_class, "map-layer");
145 : 5 : }
146 : :
147 : : static void
148 : 22 : shumate_layer_init (ShumateLayer *self)
149 : : {
150 : 22 : g_object_set (G_OBJECT (self),
151 : : "hexpand", TRUE,
152 : : "vexpand", TRUE,
153 : : NULL);
154 : 22 : }
155 : :
156 : : /**
157 : : * shumate_layer_get_viewport:
158 : : * @self: a #ShumateLayer
159 : : *
160 : : * Gets the #ShumateViewport used by this layer.
161 : : *
162 : : * Returns: (transfer none): The #ShumateViewport.
163 : : */
164 : : ShumateViewport *
165 : 240 : shumate_layer_get_viewport (ShumateLayer *self)
166 : : {
167 : 240 : ShumateLayerPrivate *priv = shumate_layer_get_instance_private (self);
168 : :
169 [ + - ]: 240 : g_return_val_if_fail (SHUMATE_IS_LAYER (self), NULL);
170 : :
171 : 240 : return priv->viewport;
172 : : }
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