shumate/shumate-scale.c
| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (C) 2011-2013 Jiri Techet <techet@gmail.com> | ||
| 3 | * Copyright (C) 2019 Marcus Lundblad <ml@update.uu.se> | ||
| 4 | * Copyright (C) 2020 Collabora Ltd. (https://www.collabora.com) | ||
| 5 | * Copyright (C) 2020 Corentin Noël <corentin.noel@collabora.com> | ||
| 6 | * | ||
| 7 | * This library is free software; you can redistribute it and/or | ||
| 8 | * modify it under the terms of the GNU Lesser General Public | ||
| 9 | * License as published by the Free Software Foundation; either | ||
| 10 | * version 2.1 of the License, or (at your option) any later version. | ||
| 11 | * | ||
| 12 | * This library is distributed in the hope that it will be useful, | ||
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 15 | * Lesser General Public License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU Lesser General Public | ||
| 18 | * License along with this library; if not, write to the Free Software | ||
| 19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 20 | */ | ||
| 21 | |||
| 22 | /** | ||
| 23 | * ShumateScale: | ||
| 24 | * | ||
| 25 | * A widget displaying a scale. | ||
| 26 | * | ||
| 27 | * # CSS nodes | ||
| 28 | * | ||
| 29 | * ``` | ||
| 30 | * map-scale | ||
| 31 | * ├── label[.metric][.imperial] | ||
| 32 | * ``` | ||
| 33 | * | ||
| 34 | * `ShumateScale` uses a single CSS node with name map-scale, it has up to two | ||
| 35 | * childs different labels. | ||
| 36 | */ | ||
| 37 | |||
| 38 | #include "shumate-scale.h" | ||
| 39 | #include "shumate-enum-types.h" | ||
| 40 | |||
| 41 | #include <glib-object.h> | ||
| 42 | #include <glib/gi18n.h> | ||
| 43 | #include <math.h> | ||
| 44 | #include <string.h> | ||
| 45 | |||
| 46 | enum | ||
| 47 | { | ||
| 48 | PROP_UNIT = 1, | ||
| 49 | PROP_MAX_SCALE_WIDTH, | ||
| 50 | PROP_VIEWPORT, | ||
| 51 | N_PROPERTIES, | ||
| 52 | }; | ||
| 53 | |||
| 54 | static GParamSpec *obj_properties[N_PROPERTIES] = { NULL, }; | ||
| 55 | |||
| 56 | struct _ShumateScale | ||
| 57 | { | ||
| 58 | GtkWidget parent_instance; | ||
| 59 | |||
| 60 | ShumateUnit unit; | ||
| 61 | guint max_scale_width; | ||
| 62 | |||
| 63 | ShumateViewport *viewport; | ||
| 64 | |||
| 65 | GtkWidget *metric_label; | ||
| 66 | GtkWidget *imperial_label; | ||
| 67 | }; | ||
| 68 | |||
| 69 |
4/6shumate_scale_class_intern_init:
✗ Branch 3 → 4 not taken.
✓ Branch 3 → 5 taken 1 time.
shumate_scale_get_type:
✓ Branch 2 → 3 taken 1 time.
✓ Branch 2 → 7 taken 1 time.
✓ Branch 4 → 5 taken 1 time.
✗ Branch 4 → 7 not taken.
|
4 | G_DEFINE_TYPE (ShumateScale, shumate_scale, GTK_TYPE_WIDGET); |
| 70 | |||
| 71 | #define FEET_IN_METERS 3.280839895 | ||
| 72 | |||
| 73 | #define FEET_IN_A_MILE 5280.0 | ||
| 74 | |||
| 75 | /* | ||
| 76 | * shumate_scale_compute_length: | ||
| 77 | * @self: a #ShumateScale | ||
| 78 | * | ||
| 79 | * This loop will find the pretty value to display on the scale. | ||
| 80 | * It will be run once for metric units, and twice for imperials | ||
| 81 | * so that both feet and miles have pretty numbers. | ||
| 82 | */ | ||
| 83 | static gboolean | ||
| 84 | ✗ | shumate_scale_compute_length (ShumateScale *self, | |
| 85 | ShumateUnit unit, | ||
| 86 | float *out_scale_width, | ||
| 87 | float *out_base, | ||
| 88 | gboolean *out_is_small_unit) | ||
| 89 | { | ||
| 90 | ✗ | ShumateMapSource *map_source; | |
| 91 | ✗ | double zoom_level; | |
| 92 | ✗ | double lat, lon; | |
| 93 | ✗ | float scale_width; | |
| 94 | ✗ | float base; | |
| 95 | ✗ | float factor; | |
| 96 | ✗ | gboolean is_small_unit = TRUE; | |
| 97 | ✗ | double m_per_pixel; | |
| 98 | |||
| 99 | ✗ | g_assert (SHUMATE_IS_SCALE (self)); | |
| 100 | |||
| 101 | ✗ | if (out_scale_width) | |
| 102 | ✗ | *out_scale_width = 0; | |
| 103 | |||
| 104 | ✗ | if (out_base) | |
| 105 | ✗ | *out_base = 1; | |
| 106 | |||
| 107 | ✗ | if (out_is_small_unit) | |
| 108 | ✗ | *out_is_small_unit = TRUE; | |
| 109 | |||
| 110 | ✗ | if (!self->viewport) | |
| 111 | return FALSE; | ||
| 112 | |||
| 113 | ✗ | scale_width = self->max_scale_width; | |
| 114 | ✗ | zoom_level = shumate_viewport_get_zoom_level (self->viewport); | |
| 115 | ✗ | map_source = shumate_viewport_get_reference_map_source (self->viewport); | |
| 116 | ✗ | if (!map_source) | |
| 117 | return FALSE; | ||
| 118 | |||
| 119 | ✗ | lat = shumate_location_get_latitude (SHUMATE_LOCATION (self->viewport)); | |
| 120 | ✗ | lon = shumate_location_get_longitude (SHUMATE_LOCATION (self->viewport)); | |
| 121 | ✗ | m_per_pixel = shumate_map_source_get_meters_per_pixel (map_source, | |
| 122 | zoom_level, | ||
| 123 | lat, | ||
| 124 | lon); | ||
| 125 | |||
| 126 | ✗ | if (unit == SHUMATE_UNIT_IMPERIAL) | |
| 127 | ✗ | m_per_pixel *= FEET_IN_METERS; /* m_per_pixel is now in ft */ | |
| 128 | |||
| 129 | ✗ | do | |
| 130 | { | ||
| 131 | /* Keep the previous power of 10 */ | ||
| 132 | ✗ | base = floor (log (m_per_pixel * scale_width) / log (10)); | |
| 133 | ✗ | base = pow (10, base); | |
| 134 | |||
| 135 | /* How many times can it be fitted in our max scale width */ | ||
| 136 | ✗ | g_assert (base > 0); | |
| 137 | ✗ | g_assert (m_per_pixel * scale_width / base > 0); | |
| 138 | ✗ | scale_width /= m_per_pixel * scale_width / base; | |
| 139 | ✗ | g_assert (scale_width > 0); | |
| 140 | ✗ | factor = floor (self->max_scale_width / scale_width); | |
| 141 | ✗ | base *= factor; | |
| 142 | ✗ | scale_width *= factor; | |
| 143 | |||
| 144 | ✗ | if (unit == SHUMATE_UNIT_METRIC) | |
| 145 | { | ||
| 146 | ✗ | if (base / 1000.0 >= 1) | |
| 147 | { | ||
| 148 | ✗ | base /= 1000.0; /* base is now in km */ | |
| 149 | ✗ | is_small_unit = FALSE; | |
| 150 | } | ||
| 151 | |||
| 152 | break; | ||
| 153 | } | ||
| 154 | ✗ | else if (unit == SHUMATE_UNIT_IMPERIAL) | |
| 155 | { | ||
| 156 | ✗ | if (is_small_unit && base / FEET_IN_A_MILE >= 1) | |
| 157 | { | ||
| 158 | ✗ | m_per_pixel /= FEET_IN_A_MILE; /* m_per_pixel is now in miles */ | |
| 159 | ✗ | is_small_unit = FALSE; | |
| 160 | /* we need to recompute the base because 1000 ft != 1 mile */ | ||
| 161 | } | ||
| 162 | else | ||
| 163 | break; | ||
| 164 | } | ||
| 165 | } while (TRUE); | ||
| 166 | |||
| 167 | |||
| 168 | ✗ | if (out_scale_width) | |
| 169 | ✗ | *out_scale_width = scale_width; | |
| 170 | |||
| 171 | ✗ | if (out_base) | |
| 172 | ✗ | *out_base = base; | |
| 173 | |||
| 174 | ✗ | if (out_is_small_unit) | |
| 175 | ✗ | *out_is_small_unit = is_small_unit; | |
| 176 | |||
| 177 | return TRUE; | ||
| 178 | } | ||
| 179 | |||
| 180 | static void | ||
| 181 | ✗ | shumate_scale_on_scale_changed (ShumateScale *self) | |
| 182 | { | ||
| 183 | ✗ | float metric_scale_width, metric_base; | |
| 184 | ✗ | float imperial_scale_width, imperial_base; | |
| 185 | ✗ | gboolean metric_is_small_unit, imperial_is_small_unit; | |
| 186 | ✗ | g_autofree char *metric_label = NULL; | |
| 187 | ✗ | g_autofree char *imperial_label = NULL; | |
| 188 | |||
| 189 | ✗ | shumate_scale_compute_length (self, SHUMATE_UNIT_METRIC, &metric_scale_width, &metric_base, &metric_is_small_unit); | |
| 190 | ✗ | shumate_scale_compute_length (self, SHUMATE_UNIT_IMPERIAL, &imperial_scale_width, &imperial_base, &imperial_is_small_unit); | |
| 191 | |||
| 192 | ✗ | gtk_widget_set_size_request (self->metric_label, metric_scale_width, -1); | |
| 193 | ✗ | gtk_widget_set_size_request (self->imperial_label, imperial_scale_width, -1); | |
| 194 | |||
| 195 | ✗ | if (metric_is_small_unit) | |
| 196 | // m is the unit for meters | ||
| 197 | ✗ | metric_label = g_strdup_printf (_("%d m"), (int) metric_base); | |
| 198 | else | ||
| 199 | // km is the unit for kilometers | ||
| 200 | ✗ | metric_label = g_strdup_printf (_("%d km"), (int) metric_base); | |
| 201 | |||
| 202 | ✗ | gtk_label_set_label (GTK_LABEL (self->metric_label), metric_label); | |
| 203 | |||
| 204 | ✗ | if (imperial_is_small_unit) | |
| 205 | // ft is the unit for feet | ||
| 206 | ✗ | imperial_label = g_strdup_printf (_("%d ft"), (int) imperial_base); | |
| 207 | else | ||
| 208 | // mi is the unit for miles | ||
| 209 | ✗ | imperial_label = g_strdup_printf (_("%d mi"), (int) imperial_base); | |
| 210 | |||
| 211 | ✗ | gtk_label_set_label (GTK_LABEL (self->imperial_label), imperial_label); | |
| 212 | ✗ | gtk_widget_queue_resize (GTK_WIDGET (self)); | |
| 213 | ✗ | } | |
| 214 | |||
| 215 | static void | ||
| 216 | ✗ | on_viewport_props_changed (ShumateScale *self, | |
| 217 | G_GNUC_UNUSED GParamSpec *pspec, | ||
| 218 | ShumateViewport *viewport) | ||
| 219 | { | ||
| 220 | ✗ | shumate_scale_on_scale_changed (self); | |
| 221 | ✗ | } | |
| 222 | |||
| 223 | |||
| 224 | static void | ||
| 225 | ✗ | shumate_scale_get_property (GObject *object, | |
| 226 | guint prop_id, | ||
| 227 | GValue *value, | ||
| 228 | GParamSpec *pspec) | ||
| 229 | { | ||
| 230 | ✗ | ShumateScale *scale = SHUMATE_SCALE (object); | |
| 231 | |||
| 232 | ✗ | switch (prop_id) | |
| 233 | { | ||
| 234 | ✗ | case PROP_UNIT: | |
| 235 | ✗ | g_value_set_enum (value, scale->unit); | |
| 236 | ✗ | break; | |
| 237 | |||
| 238 | ✗ | case PROP_MAX_SCALE_WIDTH: | |
| 239 | ✗ | g_value_set_uint (value, scale->max_scale_width); | |
| 240 | ✗ | break; | |
| 241 | |||
| 242 | ✗ | case PROP_VIEWPORT: | |
| 243 | ✗ | g_value_set_object (value, scale->viewport); | |
| 244 | ✗ | break; | |
| 245 | |||
| 246 | ✗ | default: | |
| 247 | ✗ | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); | |
| 248 | } | ||
| 249 | ✗ | } | |
| 250 | |||
| 251 | |||
| 252 | static void | ||
| 253 | ✗ | shumate_scale_set_property (GObject *object, | |
| 254 | guint prop_id, | ||
| 255 | const GValue *value, | ||
| 256 | GParamSpec *pspec) | ||
| 257 | { | ||
| 258 | ✗ | ShumateScale *scale = SHUMATE_SCALE (object); | |
| 259 | |||
| 260 | ✗ | switch (prop_id) | |
| 261 | { | ||
| 262 | ✗ | case PROP_UNIT: | |
| 263 | ✗ | shumate_scale_set_unit (scale, g_value_get_enum (value)); | |
| 264 | ✗ | break; | |
| 265 | |||
| 266 | ✗ | case PROP_MAX_SCALE_WIDTH: | |
| 267 | ✗ | shumate_scale_set_max_width (scale, g_value_get_uint (value)); | |
| 268 | ✗ | break; | |
| 269 | |||
| 270 | ✗ | case PROP_VIEWPORT: | |
| 271 | ✗ | shumate_scale_set_viewport (scale, g_value_get_object (value)); | |
| 272 | ✗ | break; | |
| 273 | |||
| 274 | ✗ | default: | |
| 275 | ✗ | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); | |
| 276 | } | ||
| 277 | ✗ | } | |
| 278 | |||
| 279 | static void | ||
| 280 | ✗ | shumate_scale_dispose (GObject *object) | |
| 281 | { | ||
| 282 | ✗ | ShumateScale *scale = SHUMATE_SCALE (object); | |
| 283 | |||
| 284 | ✗ | g_signal_handlers_disconnect_by_data (scale->viewport, scale); | |
| 285 | ✗ | g_clear_object (&scale->viewport); | |
| 286 | ✗ | g_clear_pointer (&scale->metric_label, gtk_widget_unparent); | |
| 287 | ✗ | g_clear_pointer (&scale->imperial_label, gtk_widget_unparent); | |
| 288 | |||
| 289 | ✗ | G_OBJECT_CLASS (shumate_scale_parent_class)->dispose (object); | |
| 290 | ✗ | } | |
| 291 | |||
| 292 | static void | ||
| 293 | 1 | shumate_scale_class_init (ShumateScaleClass *klass) | |
| 294 | { | ||
| 295 | 1 | GObjectClass *object_class = G_OBJECT_CLASS (klass); | |
| 296 | 1 | GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass); | |
| 297 | 1 | GdkDisplay *display; | |
| 298 | |||
| 299 | 1 | object_class->dispose = shumate_scale_dispose; | |
| 300 | 1 | object_class->get_property = shumate_scale_get_property; | |
| 301 | 1 | object_class->set_property = shumate_scale_set_property; | |
| 302 | |||
| 303 | /** | ||
| 304 | * ShumateScale:max-width: | ||
| 305 | * | ||
| 306 | * The size of the map scale on screen in pixels. | ||
| 307 | */ | ||
| 308 | 2 | obj_properties[PROP_MAX_SCALE_WIDTH] = | |
| 309 | 1 | g_param_spec_uint ("max-width", NULL, NULL, | |
| 310 | 1, G_MAXUINT, 150, | ||
| 311 | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS); | ||
| 312 | |||
| 313 | /** | ||
| 314 | * ShumateScale:unit: | ||
| 315 | * | ||
| 316 | * The scale's units. | ||
| 317 | */ | ||
| 318 | 2 | obj_properties[PROP_UNIT] = | |
| 319 | 1 | g_param_spec_enum ("unit", NULL, NULL, | |
| 320 | SHUMATE_TYPE_UNIT, | ||
| 321 | SHUMATE_UNIT_BOTH, | ||
| 322 | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS); | ||
| 323 | |||
| 324 | /** | ||
| 325 | * ShumateScale:viewport: | ||
| 326 | * | ||
| 327 | * The viewport to use. | ||
| 328 | */ | ||
| 329 | 2 | obj_properties[PROP_VIEWPORT] = | |
| 330 | 1 | g_param_spec_object ("viewport", NULL, NULL, | |
| 331 | SHUMATE_TYPE_VIEWPORT, | ||
| 332 | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS); | ||
| 333 | |||
| 334 | 1 | g_object_class_install_properties (object_class, N_PROPERTIES, obj_properties); | |
| 335 | |||
| 336 | 1 | gtk_widget_class_set_css_name (widget_class, "map-scale"); | |
| 337 | 1 | gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BOX_LAYOUT); | |
| 338 | |||
| 339 | 1 | display = gdk_display_get_default (); | |
| 340 |
1/2✗ Branch 12 → 13 not taken.
✓ Branch 12 → 18 taken 1 time.
|
1 | if (display) |
| 341 | { | ||
| 342 | ✗ | g_autoptr(GtkCssProvider) provider = gtk_css_provider_new (); | |
| 343 | ✗ | gtk_css_provider_load_from_resource (provider, "/org/gnome/shumate/scale.css"); | |
| 344 | ✗ | gtk_style_context_add_provider_for_display (display, | |
| 345 | GTK_STYLE_PROVIDER (provider), | ||
| 346 | GTK_STYLE_PROVIDER_PRIORITY_FALLBACK); | ||
| 347 | } | ||
| 348 | 1 | } | |
| 349 | |||
| 350 | static void | ||
| 351 | ✗ | shumate_scale_init (ShumateScale *self) | |
| 352 | { | ||
| 353 | ✗ | GtkWidget *self_widget = GTK_WIDGET (self); | |
| 354 | ✗ | GtkLayoutManager *layout = gtk_widget_get_layout_manager (self_widget); | |
| 355 | |||
| 356 | ✗ | self->unit = SHUMATE_UNIT_BOTH; | |
| 357 | ✗ | self->max_scale_width = 150; | |
| 358 | |||
| 359 | ✗ | gtk_orientable_set_orientation (GTK_ORIENTABLE (layout), GTK_ORIENTATION_VERTICAL); | |
| 360 | ✗ | gtk_widget_add_css_class (self_widget, "vertical"); | |
| 361 | |||
| 362 | ✗ | self->metric_label = gtk_label_new (NULL); | |
| 363 | ✗ | g_object_set (G_OBJECT (self->metric_label), | |
| 364 | "xalign", 0.0f, | ||
| 365 | "halign", GTK_ALIGN_START, | ||
| 366 | "ellipsize", PANGO_ELLIPSIZE_END, | ||
| 367 | NULL); | ||
| 368 | ✗ | gtk_widget_add_css_class (self->metric_label, "metric"); | |
| 369 | ✗ | self->imperial_label = gtk_label_new (NULL); | |
| 370 | ✗ | g_object_set (G_OBJECT (self->imperial_label), | |
| 371 | "xalign", 0.0f, | ||
| 372 | "halign", GTK_ALIGN_START, | ||
| 373 | "ellipsize", PANGO_ELLIPSIZE_END, | ||
| 374 | NULL); | ||
| 375 | ✗ | gtk_widget_add_css_class (self->imperial_label, "imperial"); | |
| 376 | |||
| 377 | ✗ | gtk_widget_insert_after (self->metric_label, self_widget, NULL); | |
| 378 | ✗ | gtk_widget_insert_after (self->imperial_label, self_widget, self->metric_label); | |
| 379 | ✗ | } | |
| 380 | |||
| 381 | |||
| 382 | /** | ||
| 383 | * shumate_scale_new: | ||
| 384 | * @viewport: (nullable): a #ShumateViewport | ||
| 385 | * | ||
| 386 | * Creates an instance of #ShumateScale. | ||
| 387 | * | ||
| 388 | * Returns: a new #ShumateScale. | ||
| 389 | */ | ||
| 390 | ShumateScale * | ||
| 391 | ✗ | shumate_scale_new (ShumateViewport *viewport) | |
| 392 | { | ||
| 393 | ✗ | return SHUMATE_SCALE (g_object_new (SHUMATE_TYPE_SCALE, | |
| 394 | "viewport", viewport, | ||
| 395 | NULL)); | ||
| 396 | } | ||
| 397 | |||
| 398 | |||
| 399 | /** | ||
| 400 | * shumate_scale_set_max_width: | ||
| 401 | * @scale: a #ShumateScale | ||
| 402 | * @value: the number of pixels | ||
| 403 | * | ||
| 404 | * Sets the maximum width of the scale on the screen in pixels | ||
| 405 | */ | ||
| 406 | void | ||
| 407 | ✗ | shumate_scale_set_max_width (ShumateScale *scale, | |
| 408 | guint value) | ||
| 409 | { | ||
| 410 | ✗ | g_return_if_fail (SHUMATE_IS_SCALE (scale)); | |
| 411 | |||
| 412 | ✗ | if (scale->max_scale_width == value) | |
| 413 | return; | ||
| 414 | |||
| 415 | ✗ | scale->max_scale_width = value; | |
| 416 | ✗ | g_object_notify_by_pspec(G_OBJECT (scale), obj_properties[PROP_MAX_SCALE_WIDTH]); | |
| 417 | ✗ | shumate_scale_on_scale_changed (scale); | |
| 418 | } | ||
| 419 | |||
| 420 | |||
| 421 | /** | ||
| 422 | * shumate_scale_set_unit: | ||
| 423 | * @scale: a #ShumateScale | ||
| 424 | * @unit: a #ShumateUnit | ||
| 425 | * | ||
| 426 | * Sets the scale unit. | ||
| 427 | */ | ||
| 428 | void | ||
| 429 | ✗ | shumate_scale_set_unit (ShumateScale *scale, | |
| 430 | ShumateUnit unit) | ||
| 431 | { | ||
| 432 | ✗ | g_return_if_fail (SHUMATE_IS_SCALE (scale)); | |
| 433 | |||
| 434 | ✗ | if (scale->unit == unit) | |
| 435 | return; | ||
| 436 | |||
| 437 | ✗ | scale->unit = unit; | |
| 438 | |||
| 439 | ✗ | gtk_widget_set_visible (scale->metric_label, unit == SHUMATE_UNIT_METRIC || unit == SHUMATE_UNIT_BOTH); | |
| 440 | ✗ | gtk_widget_set_visible (scale->imperial_label, unit == SHUMATE_UNIT_IMPERIAL || unit == SHUMATE_UNIT_BOTH); | |
| 441 | |||
| 442 | ✗ | g_object_notify_by_pspec(G_OBJECT (scale), obj_properties[PROP_UNIT]); | |
| 443 | ✗ | shumate_scale_on_scale_changed (scale); | |
| 444 | } | ||
| 445 | |||
| 446 | /** | ||
| 447 | * shumate_scale_set_viewport: | ||
| 448 | * @scale: a #ShumateScale | ||
| 449 | * @viewport: (nullable): a #ShumateViewport | ||
| 450 | * | ||
| 451 | * Sets the scale viewport. | ||
| 452 | */ | ||
| 453 | void | ||
| 454 | ✗ | shumate_scale_set_viewport (ShumateScale *scale, | |
| 455 | ShumateViewport *viewport) | ||
| 456 | { | ||
| 457 | ✗ | g_return_if_fail (SHUMATE_IS_SCALE (scale)); | |
| 458 | |||
| 459 | ✗ | if (scale->viewport) | |
| 460 | ✗ | g_signal_handlers_disconnect_by_data (scale->viewport, scale); | |
| 461 | |||
| 462 | ✗ | if (g_set_object (&scale->viewport, viewport)) | |
| 463 | { | ||
| 464 | ✗ | g_object_notify_by_pspec(G_OBJECT (scale), obj_properties[PROP_VIEWPORT]); | |
| 465 | ✗ | if (scale->viewport) | |
| 466 | { | ||
| 467 | ✗ | g_signal_connect_swapped (scale->viewport, "notify::latitude", G_CALLBACK (on_viewport_props_changed), scale); | |
| 468 | ✗ | g_signal_connect_swapped (scale->viewport, "notify::zoom-level", G_CALLBACK (on_viewport_props_changed), scale); | |
| 469 | ✗ | g_signal_connect_swapped (scale->viewport, "notify::reference-map-source", G_CALLBACK (on_viewport_props_changed), scale); | |
| 470 | } | ||
| 471 | |||
| 472 | ✗ | shumate_scale_on_scale_changed (scale); | |
| 473 | } | ||
| 474 | } | ||
| 475 | |||
| 476 | |||
| 477 | /** | ||
| 478 | * shumate_scale_get_max_width: | ||
| 479 | * @scale: a #ShumateScale | ||
| 480 | * | ||
| 481 | * Gets the maximum scale width. | ||
| 482 | * | ||
| 483 | * Returns: The maximum scale width in pixels. | ||
| 484 | */ | ||
| 485 | guint | ||
| 486 | ✗ | shumate_scale_get_max_width (ShumateScale *scale) | |
| 487 | { | ||
| 488 | ✗ | g_return_val_if_fail (SHUMATE_IS_SCALE (scale), FALSE); | |
| 489 | |||
| 490 | ✗ | return scale->max_scale_width; | |
| 491 | } | ||
| 492 | |||
| 493 | |||
| 494 | /** | ||
| 495 | * shumate_scale_get_unit: | ||
| 496 | * @scale: a #ShumateScale | ||
| 497 | * | ||
| 498 | * Gets the unit used by the scale. | ||
| 499 | * | ||
| 500 | * Returns: The unit used by the scale | ||
| 501 | */ | ||
| 502 | ShumateUnit | ||
| 503 | ✗ | shumate_scale_get_unit (ShumateScale *scale) | |
| 504 | { | ||
| 505 | ✗ | g_return_val_if_fail (SHUMATE_IS_SCALE (scale), FALSE); | |
| 506 | |||
| 507 | ✗ | return scale->unit; | |
| 508 | } | ||
| 509 | |||
| 510 | /** | ||
| 511 | * shumate_scale_get_viewport: | ||
| 512 | * @scale: a #ShumateScale | ||
| 513 | * | ||
| 514 | * Gets the viewport used by the scale. | ||
| 515 | * | ||
| 516 | * Returns: (transfer none) (nullable): The #ShumateViewport used by the scale | ||
| 517 | */ | ||
| 518 | ShumateViewport * | ||
| 519 | ✗ | shumate_scale_get_viewport (ShumateScale *scale) | |
| 520 | { | ||
| 521 | ✗ | g_return_val_if_fail (SHUMATE_IS_SCALE (scale), NULL); | |
| 522 | |||
| 523 | ✗ | return scale->viewport; | |
| 524 | } | ||
| 525 |