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50a14534 EB |
1 | /* |
2 | * viking -- GPS Data and Topo Analyzer, Explorer, and Manager | |
3 | * | |
a482007a | 4 | * Copyright (C) 2003-2007, Evan Battaglia <gtoevan@gmx.net> |
50a14534 EB |
5 | * |
6 | * Lat/Lon plotting functions calcxy* are from GPSDrive | |
7 | * GPSDrive Copyright (C) 2001-2004 Fritz Ganter <ganter@ganter.at> | |
8 | * | |
9 | * Multiple UTM zone patch by Kit Transue <notlostyet@didactek.com> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
24 | * | |
25 | */ | |
8c00358d GB |
26 | #ifdef HAVE_CONFIG_H |
27 | #include "config.h" | |
28 | #endif | |
50a14534 EB |
29 | |
30 | #define DEFAULT_BACKGROUND_COLOR "#CCCCCC" | |
31 | ||
32 | #include <gtk/gtk.h> | |
8c00358d | 33 | #ifdef HAVE_MATH_H |
50a14534 | 34 | #include <math.h> |
8c00358d | 35 | #endif |
82aa018d GB |
36 | #ifdef HAVE_STRING_H |
37 | #include <string.h> | |
38 | #endif | |
50a14534 EB |
39 | |
40 | #include "coords.h" | |
41 | #include "vikcoord.h" | |
a59e6eb9 | 42 | #include "vikwindow.h" |
50a14534 EB |
43 | #include "vikviewport.h" |
44 | ||
45 | #include "mapcoord.h" | |
46 | ||
47 | /* for ALTI_TO_MPP */ | |
48 | #include "globals.h" | |
50a14534 EB |
49 | |
50 | static gdouble EASTING_OFFSET = 500000.0; | |
51 | ||
52 | static void viewport_class_init ( VikViewportClass *klass ); | |
53 | static void viewport_init ( VikViewport *vvp ); | |
54 | static void viewport_finalize ( GObject *gob ); | |
55 | static void viewport_utm_zone_check ( VikViewport *vvp ); | |
56 | ||
57 | static gboolean calcxy(double *x, double *y, double lg, double lt, double zero_long, double zero_lat, double pixelfact_x, double pixelfact_y, gint mapSizeX2, gint mapSizeY2 ); | |
58 | static gboolean calcxy_rev(double *lg, double *lt, gint x, gint y, double zero_long, double zero_lat, double pixelfact_x, double pixelfact_y, gint mapSizeX2, gint mapSizeY2 ); | |
59 | double calcR (double lat); | |
60 | ||
61 | static double Radius[181]; | |
62 | static void viewport_init_ra(); | |
63 | ||
64 | static GObjectClass *parent_class; | |
65 | ||
50a14534 EB |
66 | |
67 | struct _VikViewport { | |
68 | GtkDrawingArea drawing_area; | |
69 | GdkPixmap *scr_buffer; | |
70 | gint width, height; | |
71 | VikCoord center; | |
72 | VikCoordMode coord_mode; | |
73 | gdouble xmpp, ympp; | |
74 | ||
75 | GdkPixbuf *alpha_pixbuf; | |
76 | guint8 alpha_pixbuf_width; | |
77 | guint8 alpha_pixbuf_height; | |
78 | ||
79 | gdouble utm_zone_width; | |
80 | gboolean one_utm_zone; | |
81 | ||
82 | GdkGC *background_gc; | |
83 | GdkColor background_color; | |
4e485bf3 | 84 | GdkGC *scale_bg_gc; |
82aa018d GB |
85 | |
86 | GSList *copyrights; | |
87 | ||
88 | /* Wether or not display OSD info */ | |
35c7c0ba | 89 | gboolean draw_scale; |
82aa018d | 90 | gboolean draw_copyright; |
c933487f | 91 | gboolean draw_centermark; |
50a14534 EB |
92 | |
93 | /* subset of coord types. lat lon can be plotted in 2 ways, google or exp. */ | |
94 | VikViewportDrawMode drawmode; | |
95 | ||
96 | /* handy conversion factors which make google plotting extremely fast */ | |
97 | gdouble google_calcx_fact; | |
98 | gdouble google_calcy_fact; | |
99 | gdouble google_calcx_rev_fact; | |
100 | gdouble google_calcy_rev_fact; | |
0df66d57 EB |
101 | |
102 | /* trigger stuff */ | |
103 | gpointer trigger; | |
104 | GdkPixmap *snapshot_buffer; | |
105 | gboolean half_drawn; | |
50a14534 EB |
106 | }; |
107 | ||
108 | static gdouble | |
109 | viewport_utm_zone_width ( VikViewport *vvp ) | |
110 | { | |
111 | if ( vvp->coord_mode == VIK_COORD_UTM ) { | |
112 | struct LatLon ll; | |
113 | ||
114 | /* get latitude of screen bottom */ | |
115 | struct UTM utm = *((struct UTM *)(vik_viewport_get_center ( vvp ))); | |
116 | utm.northing -= vvp -> height * vvp -> ympp / 2; | |
117 | a_coords_utm_to_latlon ( &utm, &ll ); | |
118 | ||
119 | /* boundary */ | |
120 | ll.lon = (utm.zone - 1) * 6 - 180 ; | |
121 | a_coords_latlon_to_utm ( &ll, &utm); | |
122 | return fabs ( utm.easting - EASTING_OFFSET ) * 2; | |
123 | } else | |
124 | return 0.0; | |
125 | } | |
126 | ||
127 | ||
128 | GType vik_viewport_get_type (void) | |
129 | { | |
130 | static GType vvp_type = 0; | |
131 | ||
132 | if (!vvp_type) | |
133 | { | |
134 | static const GTypeInfo vvp_info = | |
135 | { | |
136 | sizeof (VikViewportClass), | |
137 | NULL, /* base_init */ | |
138 | NULL, /* base_finalize */ | |
139 | (GClassInitFunc) viewport_class_init, | |
140 | NULL, /* class_finalize */ | |
141 | NULL, /* class_data */ | |
142 | sizeof (VikViewport), | |
143 | 0, | |
144 | (GInstanceInitFunc) viewport_init, | |
145 | }; | |
146 | vvp_type = g_type_register_static ( GTK_TYPE_DRAWING_AREA, "VikViewport", &vvp_info, 0 ); | |
147 | } | |
148 | return vvp_type; | |
149 | } | |
150 | ||
151 | static void viewport_class_init ( VikViewportClass *klass ) | |
152 | { | |
153 | /* Destructor */ | |
154 | GObjectClass *object_class; | |
155 | ||
156 | object_class = G_OBJECT_CLASS (klass); | |
157 | ||
158 | object_class->finalize = viewport_finalize; | |
159 | ||
160 | parent_class = g_type_class_peek_parent (klass); | |
161 | } | |
162 | ||
24277274 | 163 | VikViewport *vik_viewport_new () |
50a14534 | 164 | { |
a59e6eb9 | 165 | VikViewport *vv = VIK_VIEWPORT ( g_object_new ( VIK_VIEWPORT_TYPE, NULL ) ); |
a59e6eb9 | 166 | return vv; |
50a14534 EB |
167 | } |
168 | ||
169 | static void viewport_init ( VikViewport *vvp ) | |
170 | { | |
171 | viewport_init_ra(); | |
172 | ||
5210c3d3 GB |
173 | struct UTM utm; |
174 | struct LatLon ll; | |
175 | ll.lat = a_vik_get_default_lat(); | |
176 | ll.lon = a_vik_get_default_long(); | |
177 | a_coords_latlon_to_utm ( &ll, &utm ); | |
178 | ||
50a14534 EB |
179 | /* TODO: not static */ |
180 | vvp->xmpp = 4.0; | |
181 | vvp->ympp = 4.0; | |
6a9ff0ee QT |
182 | vvp->coord_mode = VIK_COORD_LATLON; |
183 | vvp->drawmode = VIK_VIEWPORT_DRAWMODE_MERCATOR; | |
ee180665 | 184 | vvp->center.mode = VIK_COORD_LATLON; |
5210c3d3 GB |
185 | vvp->center.north_south = ll.lat; |
186 | vvp->center.east_west = ll.lon; | |
187 | vvp->center.utm_zone = (int)utm.zone; | |
188 | vvp->center.utm_letter = utm.letter; | |
50a14534 EB |
189 | vvp->scr_buffer = NULL; |
190 | vvp->alpha_pixbuf = NULL; | |
191 | vvp->alpha_pixbuf_width = vvp->alpha_pixbuf_height = 0; | |
192 | vvp->utm_zone_width = 0.0; | |
193 | vvp->background_gc = NULL; | |
4e485bf3 | 194 | vvp->scale_bg_gc = NULL; |
82aa018d GB |
195 | |
196 | vvp->copyrights = NULL; | |
197 | ||
35c7c0ba | 198 | vvp->draw_scale = TRUE; |
82aa018d | 199 | vvp->draw_copyright = TRUE; |
c933487f | 200 | vvp->draw_centermark = TRUE; |
0df66d57 EB |
201 | |
202 | vvp->trigger = NULL; | |
203 | vvp->snapshot_buffer = NULL; | |
204 | vvp->half_drawn = FALSE; | |
205 | ||
50a14534 | 206 | g_signal_connect (G_OBJECT(vvp), "configure_event", G_CALLBACK(vik_viewport_configure), NULL); |
165d30aa EB |
207 | |
208 | GTK_WIDGET_SET_FLAGS(vvp, GTK_CAN_FOCUS); /* allow VVP to have focus -- enabling key events, etc */ | |
50a14534 EB |
209 | } |
210 | ||
211 | GdkColor *vik_viewport_get_background_gdkcolor ( VikViewport *vvp ) | |
212 | { | |
213 | GdkColor *rv = g_malloc ( sizeof ( GdkColor ) ); | |
214 | *rv = vvp->background_color; | |
215 | return rv; | |
216 | } | |
217 | ||
218 | /* returns pointer to internal static storage, changes next time function called, use quickly */ | |
219 | const gchar *vik_viewport_get_background_color ( VikViewport *vvp ) | |
220 | { | |
221 | static gchar color[8]; | |
222 | g_snprintf(color, sizeof(color), "#%.2x%.2x%.2x", (int)(vvp->background_color.red/256),(int)(vvp->background_color.green/256),(int)(vvp->background_color.blue/256)); | |
223 | return color; | |
224 | } | |
225 | ||
226 | void vik_viewport_set_background_color ( VikViewport *vvp, const gchar *colorname ) | |
227 | { | |
52aa15a7 | 228 | g_assert ( vvp && vvp->background_gc ); |
b244bc6a GB |
229 | if ( gdk_color_parse ( colorname, &(vvp->background_color) ) ) |
230 | gdk_gc_set_rgb_fg_color ( vvp->background_gc, &(vvp->background_color) ); | |
231 | else | |
232 | g_warning("%s: Failed to parse color '%s'", __FUNCTION__, colorname); | |
50a14534 EB |
233 | } |
234 | ||
235 | void vik_viewport_set_background_gdkcolor ( VikViewport *vvp, GdkColor *color ) | |
236 | { | |
52aa15a7 | 237 | g_assert ( vvp && vvp->background_gc ); |
50a14534 EB |
238 | vvp->background_color = *color; |
239 | gdk_gc_set_rgb_fg_color ( vvp->background_gc, color ); | |
240 | } | |
241 | ||
242 | ||
243 | GdkGC *vik_viewport_new_gc ( VikViewport *vvp, const gchar *colorname, gint thickness ) | |
244 | { | |
b244bc6a | 245 | GdkGC *rv = NULL; |
50a14534 EB |
246 | GdkColor color; |
247 | ||
248 | rv = gdk_gc_new ( GTK_WIDGET(vvp)->window ); | |
b244bc6a GB |
249 | if ( gdk_color_parse ( colorname, &color ) ) |
250 | gdk_gc_set_rgb_fg_color ( rv, &color ); | |
251 | else | |
252 | g_warning("%s: Failed to parse color '%s'", __FUNCTION__, colorname); | |
50a14534 EB |
253 | gdk_gc_set_line_attributes ( rv, thickness, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND ); |
254 | return rv; | |
255 | } | |
256 | ||
257 | GdkGC *vik_viewport_new_gc_from_color ( VikViewport *vvp, GdkColor *color, gint thickness ) | |
258 | { | |
259 | GdkGC *rv; | |
260 | ||
261 | rv = gdk_gc_new ( GTK_WIDGET(vvp)->window ); | |
262 | gdk_gc_set_rgb_fg_color ( rv, color ); | |
263 | gdk_gc_set_line_attributes ( rv, thickness, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND ); | |
264 | return rv; | |
265 | } | |
266 | ||
267 | void vik_viewport_configure_manually ( VikViewport *vvp, gint width, guint height ) | |
268 | { | |
269 | vvp->width = width; | |
270 | vvp->height = height; | |
271 | if ( vvp->scr_buffer ) | |
272 | g_object_unref ( G_OBJECT ( vvp->scr_buffer ) ); | |
273 | vvp->scr_buffer = gdk_pixmap_new ( GTK_WIDGET(vvp)->window, vvp->width, vvp->height, -1 ); | |
0df66d57 EB |
274 | |
275 | /* TODO trigger: only if this is enabled !!! */ | |
276 | if ( vvp->snapshot_buffer ) | |
277 | g_object_unref ( G_OBJECT ( vvp->snapshot_buffer ) ); | |
278 | vvp->snapshot_buffer = gdk_pixmap_new ( GTK_WIDGET(vvp)->window, vvp->width, vvp->height, -1 ); | |
50a14534 EB |
279 | } |
280 | ||
281 | ||
282 | GdkPixmap *vik_viewport_get_pixmap ( VikViewport *vvp ) | |
283 | { | |
284 | return vvp->scr_buffer; | |
285 | } | |
286 | ||
287 | gboolean vik_viewport_configure ( VikViewport *vvp ) | |
288 | { | |
289 | g_return_val_if_fail ( vvp != NULL, TRUE ); | |
290 | ||
291 | vvp->width = GTK_WIDGET(vvp)->allocation.width; | |
292 | vvp->height = GTK_WIDGET(vvp)->allocation.height; | |
293 | ||
294 | if ( vvp->scr_buffer ) | |
295 | g_object_unref ( G_OBJECT ( vvp->scr_buffer ) ); | |
296 | ||
297 | vvp->scr_buffer = gdk_pixmap_new ( GTK_WIDGET(vvp)->window, vvp->width, vvp->height, -1 ); | |
298 | ||
0df66d57 EB |
299 | /* TODO trigger: only if enabled! */ |
300 | if ( vvp->snapshot_buffer ) | |
301 | g_object_unref ( G_OBJECT ( vvp->snapshot_buffer ) ); | |
302 | ||
303 | vvp->snapshot_buffer = gdk_pixmap_new ( GTK_WIDGET(vvp)->window, vvp->width, vvp->height, -1 ); | |
304 | /* TODO trigger */ | |
305 | ||
50a14534 | 306 | /* this is down here so it can get a GC (necessary?) */ |
e8e82387 | 307 | if ( !vvp->background_gc ) |
50a14534 | 308 | { |
348e8666 | 309 | vvp->background_gc = vik_viewport_new_gc ( vvp, DEFAULT_BACKGROUND_COLOR, 1 ); |
e8e82387 | 310 | vik_viewport_set_background_color ( vvp, DEFAULT_BACKGROUND_COLOR ); |
50a14534 | 311 | } |
4e485bf3 QT |
312 | if ( !vvp->scale_bg_gc) { |
313 | vvp->scale_bg_gc = vik_viewport_new_gc(vvp, "grey", 3); | |
314 | } | |
50a14534 EB |
315 | |
316 | return FALSE; | |
317 | } | |
318 | ||
319 | static void viewport_finalize ( GObject *gob ) | |
320 | { | |
321 | VikViewport *vvp = VIK_VIEWPORT(gob); | |
322 | ||
323 | g_return_if_fail ( vvp != NULL ); | |
324 | ||
325 | if ( vvp->scr_buffer ) | |
326 | g_object_unref ( G_OBJECT ( vvp->scr_buffer ) ); | |
327 | ||
0df66d57 EB |
328 | if ( vvp->snapshot_buffer ) |
329 | g_object_unref ( G_OBJECT ( vvp->snapshot_buffer ) ); | |
330 | ||
50a14534 EB |
331 | if ( vvp->alpha_pixbuf ) |
332 | g_object_unref ( G_OBJECT ( vvp->alpha_pixbuf ) ); | |
333 | ||
334 | if ( vvp->background_gc ) | |
335 | g_object_unref ( G_OBJECT ( vvp->background_gc ) ); | |
336 | ||
4e485bf3 QT |
337 | if ( vvp->scale_bg_gc ) { |
338 | g_object_unref ( G_OBJECT ( vvp->scale_bg_gc ) ); | |
339 | vvp->scale_bg_gc = NULL; | |
340 | } | |
341 | ||
50a14534 EB |
342 | G_OBJECT_CLASS(parent_class)->finalize(gob); |
343 | } | |
344 | ||
345 | void vik_viewport_clear ( VikViewport *vvp ) | |
346 | { | |
347 | g_return_if_fail ( vvp != NULL ); | |
348 | gdk_draw_rectangle(GDK_DRAWABLE(vvp->scr_buffer), vvp->background_gc, TRUE, 0, 0, vvp->width, vvp->height); | |
82aa018d | 349 | vik_viewport_reset_copyrights ( vvp ); |
50a14534 EB |
350 | } |
351 | ||
35c7c0ba EB |
352 | void vik_viewport_set_draw_scale ( VikViewport *vvp, gboolean draw_scale ) |
353 | { | |
354 | vvp->draw_scale = draw_scale; | |
355 | } | |
356 | ||
357 | gboolean vik_viewport_get_draw_scale ( VikViewport *vvp ) | |
358 | { | |
359 | return vvp->draw_scale; | |
360 | } | |
361 | ||
acaf7113 AF |
362 | void vik_viewport_draw_scale ( VikViewport *vvp ) |
363 | { | |
c53eda9a GB |
364 | g_return_if_fail ( vvp != NULL ); |
365 | ||
35c7c0ba EB |
366 | if ( vvp->draw_scale ) { |
367 | VikCoord left, right; | |
368 | gdouble unit, base, diff, old_unit, old_diff, ratio; | |
369 | gint odd, len, PAD = 10, SCSIZE = 5, HEIGHT=10; | |
370 | PangoFontDescription *pfd; | |
371 | PangoLayout *pl; | |
372 | gchar s[128]; | |
acaf7113 | 373 | |
35c7c0ba EB |
374 | vik_viewport_screen_to_coord ( vvp, 0, vvp->height, &left ); |
375 | vik_viewport_screen_to_coord ( vvp, vvp->width/SCSIZE, vvp->height, &right ); | |
acaf7113 | 376 | |
6f9336aa RN |
377 | vik_units_distance_t dist_units = a_vik_get_units_distance (); |
378 | switch (dist_units) { | |
379 | case VIK_UNITS_DISTANCE_KILOMETRES: | |
380 | base = vik_coord_diff ( &left, &right ); // in meters | |
381 | break; | |
382 | case VIK_UNITS_DISTANCE_MILES: | |
8d772d8a RN |
383 | // in 0.1 miles (copes better when zoomed in as 1 mile can be too big) |
384 | base = vik_coord_diff ( &left, &right ) * 0.00621371192; | |
6f9336aa RN |
385 | break; |
386 | default: | |
387 | base = 1; // Keep the compiler happy | |
388 | g_critical("Houston, we've had a problem. distance=%d", dist_units); | |
389 | } | |
35c7c0ba | 390 | ratio = (vvp->width/SCSIZE)/base; |
acaf7113 | 391 | |
35c7c0ba EB |
392 | unit = 1; |
393 | diff = fabs(base-unit); | |
acaf7113 AF |
394 | old_unit = unit; |
395 | old_diff = diff; | |
35c7c0ba EB |
396 | odd = 1; |
397 | while (diff <= old_diff) { | |
398 | old_unit = unit; | |
399 | old_diff = diff; | |
400 | unit = unit * (odd%2 ? 5 : 2); | |
401 | diff = fabs(base-unit); | |
402 | odd++; | |
403 | } | |
404 | unit = old_unit; | |
405 | len = unit * ratio; | |
acaf7113 | 406 | |
4e485bf3 QT |
407 | /* white background */ |
408 | vik_viewport_draw_line(vvp, vvp->scale_bg_gc, | |
409 | PAD, vvp->height-PAD, PAD + len, vvp->height-PAD); | |
410 | vik_viewport_draw_line(vvp, vvp->scale_bg_gc, | |
411 | PAD, vvp->height-PAD, PAD, vvp->height-PAD-HEIGHT); | |
412 | vik_viewport_draw_line(vvp, vvp->scale_bg_gc, | |
413 | PAD + len, vvp->height-PAD, PAD + len, vvp->height-PAD-HEIGHT); | |
414 | /* black scale */ | |
35c7c0ba | 415 | vik_viewport_draw_line(vvp, GTK_WIDGET(&vvp->drawing_area)->style->black_gc, |
acaf7113 | 416 | PAD, vvp->height-PAD, PAD + len, vvp->height-PAD); |
35c7c0ba | 417 | vik_viewport_draw_line(vvp, GTK_WIDGET(&vvp->drawing_area)->style->black_gc, |
acaf7113 | 418 | PAD, vvp->height-PAD, PAD, vvp->height-PAD-HEIGHT); |
35c7c0ba | 419 | vik_viewport_draw_line(vvp, GTK_WIDGET(&vvp->drawing_area)->style->black_gc, |
acaf7113 | 420 | PAD + len, vvp->height-PAD, PAD + len, vvp->height-PAD-HEIGHT); |
35c7c0ba EB |
421 | if (odd%2) { |
422 | int i; | |
423 | for (i=1; i<5; i++) { | |
4e485bf3 QT |
424 | vik_viewport_draw_line(vvp, vvp->scale_bg_gc, |
425 | PAD+i*len/5, vvp->height-PAD, PAD+i*len/5, vvp->height-PAD-((i==5)?(2*HEIGHT/3):(HEIGHT/2))); | |
35c7c0ba | 426 | vik_viewport_draw_line(vvp, GTK_WIDGET(&vvp->drawing_area)->style->black_gc, |
acaf7113 | 427 | PAD+i*len/5, vvp->height-PAD, PAD+i*len/5, vvp->height-PAD-((i==5)?(2*HEIGHT/3):(HEIGHT/2))); |
35c7c0ba EB |
428 | } |
429 | } else { | |
430 | int i; | |
431 | for (i=1; i<10; i++) { | |
4e485bf3 QT |
432 | vik_viewport_draw_line(vvp, vvp->scale_bg_gc, |
433 | PAD+i*len/10, vvp->height-PAD, PAD+i*len/10, vvp->height-PAD-((i==5)?(2*HEIGHT/3):(HEIGHT/2))); | |
35c7c0ba EB |
434 | vik_viewport_draw_line(vvp, GTK_WIDGET(&vvp->drawing_area)->style->black_gc, |
435 | PAD+i*len/10, vvp->height-PAD, PAD+i*len/10, vvp->height-PAD-((i==5)?(2*HEIGHT/3):(HEIGHT/2))); | |
436 | } | |
acaf7113 | 437 | } |
35c7c0ba EB |
438 | pl = gtk_widget_create_pango_layout (GTK_WIDGET(&vvp->drawing_area), NULL); |
439 | pfd = pango_font_description_from_string ("Sans 8"); // FIXME: settable option? global variable? | |
440 | pango_layout_set_font_description (pl, pfd); | |
441 | pango_font_description_free (pfd); | |
442 | ||
6f9336aa RN |
443 | switch (dist_units) { |
444 | case VIK_UNITS_DISTANCE_KILOMETRES: | |
445 | if (unit >= 1000) { | |
446 | sprintf(s, "%d km", (int)unit/1000); | |
447 | } else { | |
448 | sprintf(s, "%d m", (int)unit); | |
449 | } | |
450 | break; | |
451 | case VIK_UNITS_DISTANCE_MILES: | |
8d772d8a RN |
452 | // Handle units in 0.1 miles |
453 | if (unit < 10.0) { | |
454 | sprintf(s, "%0.1f miles", unit/10.0); | |
455 | } | |
456 | else if ((int)unit == 10.0) { | |
457 | sprintf(s, "1 mile"); | |
6f9336aa RN |
458 | } |
459 | else { | |
8d772d8a | 460 | sprintf(s, "%d miles", (int)(unit/10.0)); |
6f9336aa RN |
461 | } |
462 | break; | |
463 | default: | |
464 | g_critical("Houston, we've had a problem. distance=%d", dist_units); | |
acaf7113 | 465 | } |
35c7c0ba EB |
466 | pango_layout_set_text(pl, s, -1); |
467 | vik_viewport_draw_layout(vvp, GTK_WIDGET(&vvp->drawing_area)->style->black_gc, | |
acaf7113 | 468 | PAD + len + PAD, vvp->height - PAD - 10, pl); |
6278ccc6 | 469 | g_object_unref(pl); |
e6869c62 | 470 | pl = NULL; |
35c7c0ba | 471 | } |
acaf7113 AF |
472 | } |
473 | ||
82aa018d GB |
474 | void vik_viewport_set_draw_copyright ( VikViewport *vvp, gboolean draw_copyright ) |
475 | { | |
476 | vvp->draw_copyright = draw_copyright; | |
477 | } | |
478 | ||
479 | gboolean vik_viewport_get_draw_copyright ( VikViewport *vvp ) | |
480 | { | |
481 | return vvp->draw_copyright; | |
482 | } | |
483 | ||
484 | void vik_viewport_draw_copyright ( VikViewport *vvp ) | |
485 | { | |
486 | g_return_if_fail ( vvp != NULL ); | |
487 | ||
488 | if ( !vvp->draw_copyright ) | |
489 | return; | |
490 | ||
491 | gint PAD = 10; | |
492 | PangoFontDescription *pfd; | |
493 | PangoLayout *pl; | |
494 | PangoRectangle ink_rect, logical_rect; | |
495 | gchar s[128] = ""; | |
496 | ||
497 | /* compute copyrights string */ | |
498 | guint len = g_slist_length ( vvp->copyrights ); | |
499 | int i; | |
500 | for (i = 0 ; i < len ; i++) | |
501 | { | |
502 | gchar *copyright = g_slist_nth_data ( vvp->copyrights, i ); | |
503 | strcat ( s, copyright ); | |
504 | strcat ( s, " " ); | |
505 | } | |
506 | ||
507 | /* create pango layout */ | |
508 | pl = gtk_widget_create_pango_layout (GTK_WIDGET(&vvp->drawing_area), NULL); | |
509 | pfd = pango_font_description_from_string ("Sans 8"); // FIXME: settable option? global variable? | |
510 | pango_layout_set_font_description (pl, pfd); | |
511 | pango_font_description_free (pfd); | |
512 | pfd = NULL; | |
513 | pango_layout_set_alignment ( pl, PANGO_ALIGN_RIGHT ); | |
514 | ||
515 | /* Set the text */ | |
516 | pango_layout_set_text(pl, s, -1); | |
517 | ||
518 | /* Use maximum of half the viewport width */ | |
519 | pango_layout_set_width ( pl, ( vvp->width / 2 - PAD ) * PANGO_SCALE ); | |
520 | pango_layout_get_pixel_extents(pl, &ink_rect, &logical_rect); | |
521 | vik_viewport_draw_layout(vvp, GTK_WIDGET(&vvp->drawing_area)->style->black_gc, | |
522 | vvp->width / 2, vvp->height - PAD - logical_rect.height, pl); | |
523 | ||
524 | /* Free memory */ | |
525 | g_object_unref(pl); | |
526 | pl = NULL; | |
527 | } | |
528 | ||
c933487f QT |
529 | void vik_viewport_set_draw_centermark ( VikViewport *vvp, gboolean draw_centermark ) |
530 | { | |
531 | vvp->draw_centermark = draw_centermark; | |
532 | } | |
533 | ||
534 | gboolean vik_viewport_get_draw_centermark ( VikViewport *vvp ) | |
535 | { | |
536 | return vvp->draw_centermark; | |
537 | } | |
538 | ||
539 | void vik_viewport_draw_centermark ( VikViewport *vvp ) | |
540 | { | |
c53eda9a GB |
541 | g_return_if_fail ( vvp != NULL ); |
542 | ||
c933487f QT |
543 | if ( !vvp->draw_centermark ) |
544 | return; | |
545 | ||
3df69a6b QT |
546 | const int len = 30; |
547 | const int gap = 4; | |
c933487f QT |
548 | int center_x = vvp->width/2; |
549 | int center_y = vvp->height/2; | |
550 | GdkGC * black_gc = GTK_WIDGET(&vvp->drawing_area)->style->black_gc; | |
551 | ||
552 | /* white back ground */ | |
3df69a6b QT |
553 | vik_viewport_draw_line(vvp, vvp->scale_bg_gc, center_x - len, center_y, center_x - gap, center_y); |
554 | vik_viewport_draw_line(vvp, vvp->scale_bg_gc, center_x + gap, center_y, center_x + len, center_y); | |
555 | vik_viewport_draw_line(vvp, vvp->scale_bg_gc, center_x, center_y - len, center_x, center_y - gap); | |
556 | vik_viewport_draw_line(vvp, vvp->scale_bg_gc, center_x, center_y + gap, center_x, center_y + len); | |
c933487f | 557 | /* black fore ground */ |
3df69a6b QT |
558 | vik_viewport_draw_line(vvp, black_gc, center_x - len, center_y, center_x - gap, center_y); |
559 | vik_viewport_draw_line(vvp, black_gc, center_x + gap, center_y, center_x + len, center_y); | |
560 | vik_viewport_draw_line(vvp, black_gc, center_x, center_y - len, center_x, center_y - gap); | |
561 | vik_viewport_draw_line(vvp, black_gc, center_x, center_y + gap, center_x, center_y + len); | |
c933487f QT |
562 | |
563 | } | |
564 | ||
50a14534 EB |
565 | void vik_viewport_sync ( VikViewport *vvp ) |
566 | { | |
567 | g_return_if_fail ( vvp != NULL ); | |
568 | gdk_draw_drawable(GTK_WIDGET(vvp)->window, GTK_WIDGET(vvp)->style->bg_gc[0], GDK_DRAWABLE(vvp->scr_buffer), 0, 0, 0, 0, vvp->width, vvp->height); | |
569 | } | |
570 | ||
571 | void vik_viewport_pan_sync ( VikViewport *vvp, gint x_off, gint y_off ) | |
572 | { | |
acaf7113 AF |
573 | gint x, y, wid, hei; |
574 | ||
50a14534 EB |
575 | g_return_if_fail ( vvp != NULL ); |
576 | gdk_draw_drawable(GTK_WIDGET(vvp)->window, GTK_WIDGET(vvp)->style->bg_gc[0], GDK_DRAWABLE(vvp->scr_buffer), 0, 0, x_off, y_off, vvp->width, vvp->height); | |
acaf7113 AF |
577 | |
578 | if (x_off >= 0) { | |
579 | x = 0; | |
580 | wid = x_off; | |
581 | } else { | |
582 | x = vvp->width+x_off; | |
583 | wid = -x_off; | |
584 | } | |
585 | if (y_off >= 0) { | |
586 | y = 0; | |
587 | hei = y_off; | |
588 | } else { | |
589 | y = vvp->height+y_off; | |
590 | hei = -y_off; | |
591 | } | |
592 | gtk_widget_queue_draw_area(GTK_WIDGET(vvp), x, 0, wid, vvp->height); | |
593 | gtk_widget_queue_draw_area(GTK_WIDGET(vvp), 0, y, vvp->width, hei); | |
50a14534 EB |
594 | } |
595 | ||
596 | void vik_viewport_set_zoom ( VikViewport *vvp, gdouble xympp ) | |
597 | { | |
598 | g_return_if_fail ( vvp != NULL ); | |
599 | if ( xympp >= VIK_VIEWPORT_MIN_ZOOM && xympp <= VIK_VIEWPORT_MAX_ZOOM ) | |
600 | vvp->xmpp = vvp->ympp = xympp; | |
601 | ||
602 | if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_UTM ) | |
603 | viewport_utm_zone_check(vvp); | |
50a14534 EB |
604 | } |
605 | ||
606 | /* or could do factor */ | |
607 | void vik_viewport_zoom_in ( VikViewport *vvp ) | |
608 | { | |
609 | g_return_if_fail ( vvp != NULL ); | |
610 | if ( vvp->xmpp >= (VIK_VIEWPORT_MIN_ZOOM*2) && vvp->ympp >= (VIK_VIEWPORT_MIN_ZOOM*2) ) | |
611 | { | |
612 | vvp->xmpp /= 2; | |
613 | vvp->ympp /= 2; | |
614 | ||
50a14534 EB |
615 | viewport_utm_zone_check(vvp); |
616 | } | |
617 | } | |
618 | ||
619 | void vik_viewport_zoom_out ( VikViewport *vvp ) | |
620 | { | |
621 | g_return_if_fail ( vvp != NULL ); | |
622 | if ( vvp->xmpp <= (VIK_VIEWPORT_MAX_ZOOM/2) && vvp->ympp <= (VIK_VIEWPORT_MAX_ZOOM/2) ) | |
623 | { | |
624 | vvp->xmpp *= 2; | |
625 | vvp->ympp *= 2; | |
626 | ||
50a14534 EB |
627 | viewport_utm_zone_check(vvp); |
628 | } | |
629 | } | |
630 | ||
631 | gdouble vik_viewport_get_zoom ( VikViewport *vvp ) | |
632 | { | |
633 | if ( vvp->xmpp == vvp->ympp ) | |
634 | return vvp->xmpp; | |
635 | return 0.0; | |
636 | } | |
637 | ||
638 | gdouble vik_viewport_get_xmpp ( VikViewport *vvp ) | |
639 | { | |
640 | return vvp->xmpp; | |
641 | } | |
642 | ||
643 | gdouble vik_viewport_get_ympp ( VikViewport *vvp ) | |
644 | { | |
645 | return vvp->ympp; | |
646 | } | |
647 | ||
648 | void vik_viewport_set_xmpp ( VikViewport *vvp, gdouble xmpp ) | |
649 | { | |
650 | if ( xmpp >= VIK_VIEWPORT_MIN_ZOOM && xmpp <= VIK_VIEWPORT_MAX_ZOOM ) { | |
651 | vvp->xmpp = xmpp; | |
652 | if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_UTM ) | |
653 | viewport_utm_zone_check(vvp); | |
50a14534 EB |
654 | } |
655 | } | |
656 | ||
657 | void vik_viewport_set_ympp ( VikViewport *vvp, gdouble ympp ) | |
658 | { | |
659 | if ( ympp >= VIK_VIEWPORT_MIN_ZOOM && ympp <= VIK_VIEWPORT_MAX_ZOOM ) { | |
660 | vvp->ympp = ympp; | |
661 | if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_UTM ) | |
662 | viewport_utm_zone_check(vvp); | |
50a14534 EB |
663 | } |
664 | } | |
665 | ||
666 | ||
667 | const VikCoord *vik_viewport_get_center ( VikViewport *vvp ) | |
668 | { | |
669 | g_return_val_if_fail ( vvp != NULL, NULL ); | |
670 | return &(vvp->center); | |
671 | } | |
672 | ||
673 | /* called every time we update coordinates/zoom */ | |
674 | static void viewport_utm_zone_check ( VikViewport *vvp ) | |
675 | { | |
676 | if ( vvp->coord_mode == VIK_COORD_UTM ) | |
677 | { | |
678 | struct UTM utm; | |
679 | struct LatLon ll; | |
680 | a_coords_utm_to_latlon ( (struct UTM *) &(vvp->center), &ll ); | |
681 | a_coords_latlon_to_utm ( &ll, &utm ); | |
682 | if ( utm.zone != vvp->center.utm_zone ) | |
683 | *((struct UTM *)(&vvp->center)) = utm; | |
684 | ||
685 | /* misc. stuff so we don't have to check later */ | |
686 | vvp->utm_zone_width = viewport_utm_zone_width ( vvp ); | |
687 | vvp->one_utm_zone = ( vik_viewport_rightmost_zone(vvp) == vik_viewport_leftmost_zone(vvp) ); | |
688 | } | |
689 | } | |
690 | ||
691 | void vik_viewport_set_center_latlon ( VikViewport *vvp, const struct LatLon *ll ) | |
692 | { | |
693 | vik_coord_load_from_latlon ( &(vvp->center), vvp->coord_mode, ll ); | |
694 | if ( vvp->coord_mode == VIK_COORD_UTM ) | |
695 | viewport_utm_zone_check ( vvp ); | |
696 | } | |
697 | ||
698 | void vik_viewport_set_center_utm ( VikViewport *vvp, const struct UTM *utm ) | |
699 | { | |
700 | vik_coord_load_from_utm ( &(vvp->center), vvp->coord_mode, utm ); | |
701 | if ( vvp->coord_mode == VIK_COORD_UTM ) | |
702 | viewport_utm_zone_check ( vvp ); | |
703 | } | |
704 | ||
705 | void vik_viewport_set_center_coord ( VikViewport *vvp, const VikCoord *coord ) | |
706 | { | |
707 | vvp->center = *coord; | |
708 | if ( vvp->coord_mode == VIK_COORD_UTM ) | |
709 | viewport_utm_zone_check ( vvp ); | |
710 | } | |
711 | ||
712 | void vik_viewport_corners_for_zonen ( VikViewport *vvp, int zone, VikCoord *ul, VikCoord *br ) | |
713 | { | |
714 | g_return_if_fail ( vvp->coord_mode == VIK_COORD_UTM ); | |
715 | ||
716 | /* get center, then just offset */ | |
717 | vik_viewport_center_for_zonen ( vvp, VIK_UTM(ul), zone ); | |
718 | ul->mode = VIK_COORD_UTM; | |
719 | *br = *ul; | |
720 | ||
721 | ul->north_south += (vvp->ympp * vvp->height / 2); | |
722 | ul->east_west -= (vvp->xmpp * vvp->width / 2); | |
723 | br->north_south -= (vvp->ympp * vvp->height / 2); | |
724 | br->east_west += (vvp->xmpp * vvp->width / 2); | |
725 | } | |
726 | ||
727 | void vik_viewport_center_for_zonen ( VikViewport *vvp, struct UTM *center, int zone) | |
728 | { | |
729 | if ( vvp->coord_mode == VIK_COORD_UTM ) { | |
730 | *center = *((struct UTM *)(vik_viewport_get_center ( vvp ))); | |
731 | center->easting -= ( zone - center->zone ) * vvp->utm_zone_width; | |
732 | center->zone = zone; | |
733 | } | |
734 | } | |
735 | ||
736 | gchar vik_viewport_leftmost_zone ( VikViewport *vvp ) | |
737 | { | |
738 | if ( vvp->coord_mode == VIK_COORD_UTM ) { | |
739 | VikCoord coord; | |
740 | g_assert ( vvp != NULL ); | |
741 | vik_viewport_screen_to_coord ( vvp, 0, 0, &coord ); | |
742 | return coord.utm_zone; | |
743 | } | |
744 | return '\0'; | |
745 | } | |
746 | ||
747 | gchar vik_viewport_rightmost_zone ( VikViewport *vvp ) | |
748 | { | |
749 | if ( vvp->coord_mode == VIK_COORD_UTM ) { | |
750 | VikCoord coord; | |
751 | g_assert ( vvp != NULL ); | |
752 | vik_viewport_screen_to_coord ( vvp, vvp->width, 0, &coord ); | |
753 | return coord.utm_zone; | |
754 | } | |
755 | return '\0'; | |
756 | } | |
757 | ||
758 | ||
759 | void vik_viewport_set_center_screen ( VikViewport *vvp, int x, int y ) | |
760 | { | |
761 | g_return_if_fail ( vvp != NULL ); | |
762 | if ( vvp->coord_mode == VIK_COORD_UTM ) { | |
763 | /* slightly optimized */ | |
764 | vvp->center.east_west += vvp->xmpp * (x - (vvp->width/2)); | |
765 | vvp->center.north_south += vvp->ympp * ((vvp->height/2) - y); | |
766 | viewport_utm_zone_check ( vvp ); | |
767 | } else { | |
768 | VikCoord tmp; | |
769 | vik_viewport_screen_to_coord ( vvp, x, y, &tmp ); | |
770 | vik_viewport_set_center_coord ( vvp, &tmp ); | |
771 | } | |
772 | } | |
773 | ||
774 | gint vik_viewport_get_width( VikViewport *vvp ) | |
775 | { | |
776 | g_return_val_if_fail ( vvp != NULL, 0 ); | |
777 | return vvp->width; | |
778 | } | |
779 | ||
780 | gint vik_viewport_get_height( VikViewport *vvp ) | |
781 | { | |
782 | g_return_val_if_fail ( vvp != NULL, 0 ); | |
783 | return vvp->height; | |
784 | } | |
785 | ||
786 | void vik_viewport_screen_to_coord ( VikViewport *vvp, int x, int y, VikCoord *coord ) | |
787 | { | |
c53eda9a GB |
788 | g_return_if_fail ( vvp != NULL ); |
789 | ||
50a14534 EB |
790 | if ( vvp->coord_mode == VIK_COORD_UTM ) { |
791 | int zone_delta; | |
792 | struct UTM *utm = (struct UTM *) coord; | |
793 | coord->mode = VIK_COORD_UTM; | |
794 | ||
50a14534 EB |
795 | utm->zone = vvp->center.utm_zone; |
796 | utm->letter = vvp->center.utm_letter; | |
797 | utm->easting = ( ( x - ( vvp->width / 2) ) * vvp->xmpp ) + vvp->center.east_west; | |
798 | zone_delta = floor( (utm->easting - EASTING_OFFSET ) / vvp->utm_zone_width + 0.5 ); | |
799 | utm->zone += zone_delta; | |
800 | utm->easting -= zone_delta * vvp->utm_zone_width; | |
801 | utm->northing = ( ( ( vvp->height / 2) - y ) * vvp->ympp ) + vvp->center.north_south; | |
802 | } else if ( vvp->coord_mode == VIK_COORD_LATLON ) { | |
803 | coord->mode = VIK_COORD_LATLON; | |
d587678a GB |
804 | if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_LATLON ) { |
805 | coord->east_west = vvp->center.east_west + (180.0 * vvp->xmpp / 65536 / 256 * (x - vvp->width/2)); | |
806 | coord->north_south = vvp->center.north_south + (180.0 * vvp->ympp / 65536 / 256 * (vvp->height/2 - y)); | |
807 | } else if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_EXPEDIA ) | |
50a14534 | 808 | calcxy_rev(&(coord->east_west), &(coord->north_south), x, y, vvp->center.east_west, vvp->center.north_south, vvp->xmpp * ALTI_TO_MPP, vvp->ympp * ALTI_TO_MPP, vvp->width/2, vvp->height/2); |
fd98b156 | 809 | else if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_MERCATOR ) { |
50a14534 EB |
810 | /* FIXMERCATOR */ |
811 | coord->east_west = vvp->center.east_west + (180.0 * vvp->xmpp / 65536 / 256 * (x - vvp->width/2)); | |
812 | coord->north_south = DEMERCLAT ( MERCLAT(vvp->center.north_south) + (180.0 * vvp->ympp / 65536 / 256 * (vvp->height/2 - y)) ); | |
813 | ||
814 | #if 0 | |
815 | --> THIS IS JUNK HERE. | |
816 | *y = vvp->height/2 + (65536.0 / 180 / vvp->ympp * (MERCLAT(center->lat) - MERCLAT(ll->lat)))*256.0; | |
817 | ||
818 | (*y - vvp->height/2) / 256 / 65536 * 180 * vvp->ympp = (MERCLAT(center->lat) - MERCLAT(ll->lat); | |
819 | DML((180.0 * vvp->ympp / 65536 / 256 * (vvp->height/2 - y)) + ML(cl)) = ll | |
820 | #endif | |
821 | } | |
822 | } | |
823 | } | |
824 | ||
825 | void vik_viewport_coord_to_screen ( VikViewport *vvp, const VikCoord *coord, int *x, int *y ) | |
826 | { | |
827 | static VikCoord tmp; | |
828 | g_return_if_fail ( vvp != NULL ); | |
829 | ||
830 | if ( coord->mode != vvp->coord_mode ) | |
831 | { | |
832 | g_warning ( "Have to convert in vik_viewport_coord_to_screen! This should never happen!"); | |
833 | vik_coord_copy_convert ( coord, vvp->coord_mode, &tmp ); | |
834 | coord = &tmp; | |
835 | } | |
836 | ||
837 | if ( vvp->coord_mode == VIK_COORD_UTM ) { | |
838 | struct UTM *center = (struct UTM *) &(vvp->center); | |
839 | struct UTM *utm = (struct UTM *) coord; | |
840 | if ( center->zone != utm->zone && vvp->one_utm_zone ) | |
841 | { | |
842 | *x = *y = VIK_VIEWPORT_UTM_WRONG_ZONE; | |
843 | return; | |
844 | } | |
845 | ||
846 | *x = ( (utm->easting - center->easting) / vvp->xmpp ) + (vvp->width / 2) - | |
847 | (center->zone - utm->zone ) * vvp->utm_zone_width / vvp->xmpp; | |
848 | *y = (vvp->height / 2) - ( (utm->northing - center->northing) / vvp->ympp ); | |
849 | } else if ( vvp->coord_mode == VIK_COORD_LATLON ) { | |
850 | struct LatLon *center = (struct LatLon *) &(vvp->center); | |
851 | struct LatLon *ll = (struct LatLon *) coord; | |
852 | double xx,yy; | |
d587678a GB |
853 | if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_LATLON ) { |
854 | /* FIXMERCATOR: Optimize */ | |
855 | *x = vvp->width/2 + (65536.0 / 180 / vvp->xmpp * (ll->lon - center->lon))*256.0; | |
856 | *y = vvp->height/2 + (65536.0 / 180 / vvp->ympp * (center->lat - ll->lat))*256.0; | |
857 | } else if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_EXPEDIA ) { | |
50a14534 EB |
858 | calcxy ( &xx, &yy, center->lon, center->lat, ll->lon, ll->lat, vvp->xmpp * ALTI_TO_MPP, vvp->ympp * ALTI_TO_MPP, vvp->width / 2, vvp->height / 2 ); |
859 | *x = xx; *y = yy; | |
50a14534 EB |
860 | } else if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_MERCATOR ) { |
861 | /* FIXMERCATOR: Optimize */ | |
862 | *x = vvp->width/2 + (65536.0 / 180 / vvp->xmpp * (ll->lon - center->lon))*256.0; | |
863 | *y = vvp->height/2 + (65536.0 / 180 / vvp->ympp * (MERCLAT(center->lat) - MERCLAT(ll->lat)))*256.0; | |
864 | } | |
865 | } | |
866 | } | |
867 | ||
d9ffd267 EB |
868 | void a_viewport_clip_line ( gint *x1, gint *y1, gint *x2, gint *y2 ) |
869 | { | |
870 | if ( *x1 > 20000 || *x1 < -20000 ) { | |
871 | gdouble shrinkfactor = ABS(20000.0 / *x1); | |
872 | *x1 = *x2 + (shrinkfactor * (*x1-*x2)); | |
873 | *y1 = *y2 + (shrinkfactor * (*y1-*y2)); | |
874 | } else if ( *y1 > 20000 || *y1 < -20000 ) { | |
875 | gdouble shrinkfactor = ABS(20000.0 / *x1); | |
876 | *x1 = *x2 + (shrinkfactor * (*x1-*x2)); | |
877 | *y1 = *y2 + (shrinkfactor * (*y1-*y2)); | |
878 | } else if ( *x2 > 20000 || *x2 < -20000 ) { | |
879 | gdouble shrinkfactor = ABS(20000.0 / (gdouble)*x2); | |
880 | *x2 = *x1 + (shrinkfactor * (*x2-*x1)); | |
881 | *y2 = *y1 + (shrinkfactor * (*y2-*y1)); | |
37614d9e | 882 | g_print("%f, %d, %d\n", shrinkfactor, *x2, *y2); |
d9ffd267 EB |
883 | } else if ( *y2 > 20000 || *y2 < -20000 ) { |
884 | gdouble shrinkfactor = ABS(20000.0 / (gdouble)*x2); | |
885 | *x2 = *x1 + (shrinkfactor * (*x2-*x1)); | |
886 | *y2 = *y1 + (shrinkfactor * (*y2-*y1)); | |
887 | } | |
888 | } | |
889 | ||
50a14534 EB |
890 | void vik_viewport_draw_line ( VikViewport *vvp, GdkGC *gc, gint x1, gint y1, gint x2, gint y2 ) |
891 | { | |
892 | if ( ! ( ( x1 < 0 && x2 < 0 ) || ( y1 < 0 && y2 < 0 ) || | |
d9ffd267 EB |
893 | ( x1 > vvp->width && x2 > vvp->width ) || ( y1 > vvp->height && y2 > vvp->height ) ) ) { |
894 | /*** clipping, yeah! ***/ | |
895 | a_viewport_clip_line ( &x1, &y1, &x2, &y2 ); | |
896 | gdk_draw_line ( vvp->scr_buffer, gc, x1, y1, x2, y2); | |
897 | } | |
50a14534 EB |
898 | } |
899 | ||
900 | void vik_viewport_draw_rectangle ( VikViewport *vvp, GdkGC *gc, gboolean filled, gint x1, gint y1, gint x2, gint y2 ) | |
901 | { | |
902 | if ( x1 > -10 && x1 < vvp->width + 10 && y1 > -10 && y1 < vvp->height + 10 ) | |
903 | gdk_draw_rectangle ( vvp->scr_buffer, gc, filled, x1, y1, x2, y2); | |
904 | } | |
905 | ||
906 | void vik_viewport_draw_string ( VikViewport *vvp, GdkFont *font, GdkGC *gc, gint x1, gint y1, const gchar *string ) | |
907 | { | |
908 | if ( x1 > -100 && x1 < vvp->width + 100 && y1 > -100 && y1 < vvp->height + 100 ) | |
909 | gdk_draw_string ( vvp->scr_buffer, font, gc, x1, y1, string ); | |
910 | } | |
911 | ||
912 | /* shouldn't use this -- slow -- change the alpha channel instead. */ | |
913 | void vik_viewport_draw_pixbuf_with_alpha ( VikViewport *vvp, GdkPixbuf *pixbuf, gint alpha, | |
914 | gint src_x, gint src_y, gint dest_x, gint dest_y, gint w, gint h ) | |
915 | { | |
916 | gint real_dest_x = MAX(dest_x,0); | |
917 | gint real_dest_y = MAX(dest_y,0); | |
918 | ||
919 | if ( alpha == 0 ) | |
920 | return; /* don't waste your time */ | |
921 | ||
922 | if ( w > vvp->alpha_pixbuf_width || h > vvp->alpha_pixbuf_height ) | |
923 | { | |
924 | if ( vvp->alpha_pixbuf ) | |
925 | g_object_unref ( G_OBJECT ( vvp->alpha_pixbuf ) ); | |
926 | vvp->alpha_pixbuf_width = MAX(w,vvp->alpha_pixbuf_width); | |
927 | vvp->alpha_pixbuf_height = MAX(h,vvp->alpha_pixbuf_height); | |
928 | vvp->alpha_pixbuf = gdk_pixbuf_new ( GDK_COLORSPACE_RGB, FALSE, 8, vvp->alpha_pixbuf_width, vvp->alpha_pixbuf_height ); | |
929 | } | |
930 | ||
931 | w = MIN(w,vvp->width - dest_x); | |
932 | h = MIN(h,vvp->height - dest_y); | |
933 | ||
934 | /* check that we are drawing within boundaries. */ | |
935 | src_x += (real_dest_x - dest_x); | |
936 | src_y += (real_dest_y - dest_y); | |
937 | w -= (real_dest_x - dest_x); | |
938 | h -= (real_dest_y - dest_y); | |
939 | ||
940 | gdk_pixbuf_get_from_drawable ( vvp->alpha_pixbuf, vvp->scr_buffer, NULL, | |
941 | real_dest_x, real_dest_y, 0, 0, w, h ); | |
942 | ||
943 | /* do a composite */ | |
944 | gdk_pixbuf_composite ( pixbuf, vvp->alpha_pixbuf, 0, 0, w, h, -src_x, -src_y, 1, 1, 0, alpha ); | |
945 | ||
946 | /* draw pixbuf_tmp */ | |
947 | vik_viewport_draw_pixbuf ( vvp, vvp->alpha_pixbuf, 0, 0, real_dest_x, real_dest_y, w, h ); | |
948 | } | |
949 | ||
950 | void vik_viewport_draw_pixbuf ( VikViewport *vvp, GdkPixbuf *pixbuf, gint src_x, gint src_y, | |
951 | gint dest_x, gint dest_y, gint w, gint h ) | |
952 | { | |
953 | gdk_draw_pixbuf ( vvp->scr_buffer, | |
954 | // GTK_WIDGET(vvp)->style->black_gc, | |
955 | NULL, | |
956 | pixbuf, | |
957 | src_x, src_y, dest_x, dest_y, w, h, | |
958 | GDK_RGB_DITHER_NONE, 0, 0 ); | |
959 | } | |
960 | ||
961 | void vik_viewport_draw_arc ( VikViewport *vvp, GdkGC *gc, gboolean filled, gint x, gint y, gint width, gint height, gint angle1, gint angle2 ) | |
962 | { | |
963 | gdk_draw_arc ( vvp->scr_buffer, gc, filled, x, y, width, height, angle1, angle2 ); | |
964 | } | |
965 | ||
966 | ||
967 | void vik_viewport_draw_polygon ( VikViewport *vvp, GdkGC *gc, gboolean filled, GdkPoint *points, gint npoints ) | |
968 | { | |
969 | gdk_draw_polygon ( vvp->scr_buffer, gc, filled, points, npoints ); | |
970 | } | |
971 | ||
972 | VikCoordMode vik_viewport_get_coord_mode ( const VikViewport *vvp ) | |
973 | { | |
974 | g_assert ( vvp ); | |
975 | return vvp->coord_mode; | |
976 | } | |
977 | ||
978 | static void viewport_set_coord_mode ( VikViewport *vvp, VikCoordMode mode ) | |
979 | { | |
980 | g_return_if_fail ( vvp != NULL ); | |
981 | vvp->coord_mode = mode; | |
982 | vik_coord_convert ( &(vvp->center), mode ); | |
983 | } | |
984 | ||
985 | /* Thanks GPSDrive */ | |
986 | static gboolean calcxy_rev(double *lg, double *lt, gint x, gint y, double zero_long, double zero_lat, double pixelfact_x, double pixelfact_y, gint mapSizeX2, gint mapSizeY2 ) | |
987 | { | |
988 | int px, py; | |
989 | gdouble dif, lat, lon; | |
990 | double Ra = Radius[90+(gint)zero_lat]; | |
991 | ||
992 | px = (mapSizeX2 - x) * pixelfact_x; | |
993 | py = (-mapSizeY2 + y) * pixelfact_y; | |
994 | ||
995 | lat = zero_lat - py / Ra; | |
996 | lat = zero_lat - py / Ra; | |
997 | lon = | |
998 | zero_long - | |
999 | px / (Ra * | |
1000 | cos (lat * DEG2RAD)); | |
1001 | ||
1002 | dif = lat * (1 - (cos ((fabs (lon - zero_long)) * DEG2RAD))); | |
1003 | lat = lat - dif / 1.5; | |
1004 | lon = | |
1005 | zero_long - | |
1006 | px / (Ra * | |
1007 | cos (lat * DEG2RAD)); | |
1008 | ||
1009 | *lt = lat; | |
1010 | *lg = lon; | |
1011 | return (TRUE); | |
1012 | } | |
1013 | ||
1014 | /* Thanks GPSDrive */ | |
1015 | static gboolean calcxy(double *x, double *y, double lg, double lt, double zero_long, double zero_lat, double pixelfact_x, double pixelfact_y, gint mapSizeX2, gint mapSizeY2 ) | |
1016 | { | |
1017 | double dif; | |
1018 | double Ra; | |
1019 | gint mapSizeX = 2 * mapSizeX2; | |
1020 | gint mapSizeY = 2 * mapSizeY2; | |
1021 | ||
1022 | g_assert ( lt >= -90.0 && lt <= 90.0 ); | |
1023 | // lg *= rad2deg; // FIXME, optimize equations | |
1024 | // lt *= rad2deg; | |
1025 | Ra = Radius[90+(gint)lt]; | |
1026 | *x = Ra * | |
1027 | cos (lt*DEG2RAD) * (lg - zero_long); | |
1028 | *y = Ra * (lt - zero_lat); | |
1029 | dif = Ra * RAD2DEG * (1 - (cos ((DEG2RAD * (lg - zero_long))))); | |
1030 | *y = *y + dif / 1.85; | |
1031 | *x = *x / pixelfact_x; | |
1032 | *y = *y / pixelfact_y; | |
1033 | *x = mapSizeX2 - *x; | |
1034 | *y += mapSizeY2; | |
1035 | if ((*x < 0)||(*x >= mapSizeX)||(*y < 0)||(*y >= mapSizeY)) | |
1036 | return (FALSE); | |
1037 | return (TRUE); | |
1038 | } | |
1039 | ||
1040 | static void viewport_init_ra() | |
1041 | { | |
1042 | static gboolean done_before = FALSE; | |
1043 | if ( !done_before ) | |
1044 | { | |
1045 | gint i; | |
1046 | for ( i = -90; i <= 90; i++) | |
1047 | Radius[i+90] = calcR ( (double)i ) * DEG2RAD; | |
1048 | done_before = TRUE; | |
1049 | } | |
1050 | } | |
1051 | ||
1052 | double calcR (double lat) | |
1053 | { | |
1054 | double a = 6378.137, r, sc, x, y, z; | |
1055 | double e2 = 0.081082 * 0.081082; | |
1056 | /* | |
1057 | * the radius of curvature of an ellipsoidal Earth in the plane of the | |
1058 | * meridian is given by | |
1059 | * | |
1060 | * R' = a * (1 - e^2) / (1 - e^2 * (sin(lat))^2)^(3/2) | |
1061 | * | |
1062 | * | |
1063 | * where a is the equatorial radius, b is the polar radius, and e is | |
1064 | * the eccentricity of the ellipsoid = sqrt(1 - b^2/a^2) | |
1065 | * | |
1066 | * a = 6378 km (3963 mi) Equatorial radius (surface to center distance) | |
1067 | * b = 6356.752 km (3950 mi) Polar radius (surface to center distance) e | |
1068 | * = 0.081082 Eccentricity | |
1069 | */ | |
1070 | ||
1071 | lat = lat * DEG2RAD; | |
1072 | sc = sin (lat); | |
1073 | x = a * (1.0 - e2); | |
1074 | z = 1.0 - e2 * sc * sc; | |
1075 | y = pow (z, 1.5); | |
1076 | r = x / y; | |
1077 | r = r * 1000.0; | |
1078 | return r; | |
1079 | } | |
1080 | ||
1081 | gboolean vik_viewport_is_one_zone ( VikViewport *vvp ) | |
1082 | { | |
1083 | return vvp->coord_mode == VIK_COORD_UTM && vvp->one_utm_zone; | |
1084 | } | |
1085 | ||
1086 | void vik_viewport_draw_layout ( VikViewport *vvp, GdkGC *gc, gint x, gint y, PangoLayout *layout ) | |
1087 | { | |
1088 | if ( x > -100 && x < vvp->width + 100 && y > -100 && y < vvp->height + 100 ) | |
1089 | gdk_draw_layout ( vvp->scr_buffer, gc, x, y, layout ); | |
1090 | } | |
1091 | ||
1092 | void vik_gc_get_fg_color ( GdkGC *gc, GdkColor *dest ) | |
1093 | { | |
1094 | static GdkGCValues values; | |
1095 | gdk_gc_get_values ( gc, &values ); | |
1096 | gdk_colormap_query_color ( gdk_colormap_get_system(), values.foreground.pixel, dest ); | |
1097 | } | |
1098 | ||
1099 | GdkFunction vik_gc_get_function ( GdkGC *gc ) | |
1100 | { | |
1101 | static GdkGCValues values; | |
1102 | gdk_gc_get_values ( gc, &values ); | |
1103 | return values.function; | |
1104 | } | |
1105 | ||
1106 | void vik_viewport_set_drawmode ( VikViewport *vvp, VikViewportDrawMode drawmode ) | |
1107 | { | |
1108 | vvp->drawmode = drawmode; | |
1109 | if ( drawmode == VIK_VIEWPORT_DRAWMODE_UTM ) | |
1110 | viewport_set_coord_mode ( vvp, VIK_COORD_UTM ); | |
1111 | else { | |
1112 | viewport_set_coord_mode ( vvp, VIK_COORD_LATLON ); | |
50a14534 EB |
1113 | } |
1114 | } | |
1115 | ||
1116 | VikViewportDrawMode vik_viewport_get_drawmode ( VikViewport *vvp ) | |
1117 | { | |
1118 | return vvp->drawmode; | |
1119 | } | |
1120 | ||
0df66d57 EB |
1121 | /******** triggering *******/ |
1122 | void vik_viewport_set_trigger ( VikViewport *vp, gpointer trigger ) | |
1123 | { | |
1124 | vp->trigger = trigger; | |
1125 | } | |
1126 | ||
1127 | gpointer vik_viewport_get_trigger ( VikViewport *vp ) | |
1128 | { | |
1129 | return vp->trigger; | |
1130 | } | |
1131 | ||
1132 | void vik_viewport_snapshot_save ( VikViewport *vp ) | |
1133 | { | |
1134 | gdk_draw_drawable ( vp->snapshot_buffer, vp->background_gc, vp->scr_buffer, 0, 0, 0, 0, -1, -1 ); | |
1135 | } | |
1136 | ||
1137 | void vik_viewport_snapshot_load ( VikViewport *vp ) | |
1138 | { | |
1139 | gdk_draw_drawable ( vp->scr_buffer, vp->background_gc, vp->snapshot_buffer, 0, 0, 0, 0, -1, -1 ); | |
1140 | } | |
1141 | ||
1142 | void vik_viewport_set_half_drawn(VikViewport *vp, gboolean half_drawn) | |
1143 | { | |
1144 | vp->half_drawn = half_drawn; | |
1145 | } | |
1146 | ||
1147 | gboolean vik_viewport_get_half_drawn( VikViewport *vp ) | |
1148 | { | |
1149 | return vp->half_drawn; | |
1150 | } | |
1151 | ||
7bc965c0 GB |
1152 | |
1153 | const gchar *vik_viewport_get_drawmode_name(VikViewport *vv, VikViewportDrawMode mode) | |
0c1044e9 | 1154 | { |
7bc965c0 | 1155 | const gchar *name = NULL; |
24277274 | 1156 | VikWindow *vw = NULL; |
7bc965c0 GB |
1157 | GtkWidget *mode_button; |
1158 | GtkWidget *label; | |
24277274 GB |
1159 | |
1160 | vw = VIK_WINDOW_FROM_WIDGET(vv); | |
1161 | mode_button = vik_window_get_drawmode_button(vw, mode); | |
7bc965c0 GB |
1162 | label = gtk_bin_get_child(GTK_BIN(mode_button)); |
1163 | ||
1164 | name = gtk_label_get_text ( GTK_LABEL(label) ); | |
314c1ccc | 1165 | |
7bc965c0 | 1166 | return name; |
314c1ccc QT |
1167 | |
1168 | } | |
7bc965c0 | 1169 | |
0c1044e9 EB |
1170 | void vik_viewport_get_min_max_lat_lon ( VikViewport *vp, gdouble *min_lat, gdouble *max_lat, gdouble *min_lon, gdouble *max_lon ) |
1171 | { | |
1172 | VikCoord tleft, tright, bleft, bright; | |
1173 | ||
1174 | vik_viewport_screen_to_coord ( vp, 0, 0, &tleft ); | |
1175 | vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), 0, &tright ); | |
1176 | vik_viewport_screen_to_coord ( vp, 0, vik_viewport_get_height(vp), &bleft ); | |
1177 | vik_viewport_screen_to_coord ( vp, vp->width, vp->height, &bright ); | |
7bc965c0 | 1178 | |
0c1044e9 EB |
1179 | vik_coord_convert(&tleft, VIK_COORD_LATLON); |
1180 | vik_coord_convert(&tright, VIK_COORD_LATLON); | |
1181 | vik_coord_convert(&bleft, VIK_COORD_LATLON); | |
1182 | vik_coord_convert(&bright, VIK_COORD_LATLON); | |
1183 | ||
1184 | *max_lat = MAX(tleft.north_south, tright.north_south); | |
1185 | *min_lat = MIN(bleft.north_south, bright.north_south); | |
1186 | *max_lon = MAX(tright.east_west, bright.east_west); | |
1187 | *min_lon = MIN(tleft.east_west, bleft.east_west); | |
1188 | } | |
82aa018d GB |
1189 | |
1190 | void vik_viewport_reset_copyrights ( VikViewport *vp ) | |
1191 | { | |
1192 | g_return_if_fail ( vp != NULL ); | |
1193 | g_slist_foreach ( vp->copyrights, (GFunc)g_free, NULL ); | |
1194 | g_slist_free ( vp->copyrights ); | |
1195 | vp->copyrights = NULL; | |
1196 | } | |
1197 | ||
1198 | void vik_viewport_add_copyright ( VikViewport *vp, const gchar *copyright ) | |
1199 | { | |
1200 | g_return_if_fail ( vp != NULL ); | |
1201 | if ( copyright ) | |
1202 | { | |
1203 | gchar *found = (gchar*)g_slist_find_custom ( vp->copyrights, copyright, (GCompareFunc)strcmp ); | |
1204 | if ( found == NULL ) | |
1205 | { | |
1206 | gchar *duple = g_strdup ( copyright ); | |
1207 | vp->copyrights = g_slist_prepend ( vp->copyrights, duple ); | |
1208 | } | |
1209 | } | |
1210 | } |