2 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
4 * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 #include <glib/gi18n.h>
31 #include "icons/icons.h"
33 static void coord_layer_marshall( VikCoordLayer *vcl, guint8 **data, gint *len );
34 static VikCoordLayer *coord_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp );
35 static gboolean coord_layer_set_param ( VikCoordLayer *vcl, guint16 id, VikLayerParamData data, VikViewport *vp );
36 static VikLayerParamData coord_layer_get_param ( VikCoordLayer *vcl, guint16 id );
37 static void coord_layer_update_gc ( VikCoordLayer *vcl, VikViewport *vp, const gchar *color );
38 static void coord_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file );
40 static VikLayerParamScale param_scales[] = {
41 { 0.05, 60.0, 0.25, 10 },
45 static VikLayerParam coord_layer_params[] = {
46 { "color", VIK_LAYER_PARAM_COLOR, VIK_LAYER_GROUP_NONE, N_("Color:"), VIK_LAYER_WIDGET_COLOR, 0 },
47 { "min_inc", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, N_("Minutes Width:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 },
48 { "line_thickness", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Line Thickness:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 1 },
52 enum { PARAM_COLOR = 0, PARAM_MIN_INC, PARAM_LINE_THICKNESS, NUM_PARAMS };
54 VikLayerInterface vik_coord_layer_interface = {
56 &vikcoordlayer_pixbuf,
68 (VikLayerFuncCreate) vik_coord_layer_create,
69 (VikLayerFuncRealize) NULL,
70 coord_layer_post_read,
71 (VikLayerFuncFree) vik_coord_layer_free,
73 (VikLayerFuncProperties) NULL,
74 (VikLayerFuncDraw) vik_coord_layer_draw,
75 (VikLayerFuncChangeCoordMode) NULL,
77 (VikLayerFuncSetMenuItemsSelection) NULL,
78 (VikLayerFuncGetMenuItemsSelection) NULL,
80 (VikLayerFuncAddMenuItems) NULL,
81 (VikLayerFuncSublayerAddMenuItems) NULL,
83 (VikLayerFuncSublayerRenameRequest) NULL,
84 (VikLayerFuncSublayerToggleVisible) NULL,
86 (VikLayerFuncMarshall) coord_layer_marshall,
87 (VikLayerFuncUnmarshall) coord_layer_unmarshall,
89 (VikLayerFuncSetParam) coord_layer_set_param,
90 (VikLayerFuncGetParam) coord_layer_get_param,
92 (VikLayerFuncReadFileData) NULL,
93 (VikLayerFuncWriteFileData) NULL,
95 (VikLayerFuncDeleteItem) NULL,
96 (VikLayerFuncCopyItem) NULL,
97 (VikLayerFuncPasteItem) NULL,
98 (VikLayerFuncFreeCopiedItem) NULL,
99 (VikLayerFuncDragDropRequest) NULL,
102 struct _VikCoordLayer {
106 guint8 line_thickness;
110 GType vik_coord_layer_get_type ()
112 static GType vcl_type = 0;
116 static const GTypeInfo vcl_info =
118 sizeof (VikCoordLayerClass),
119 NULL, /* base_init */
120 NULL, /* base_finalize */
121 NULL, /* class init */
122 NULL, /* class_finalize */
123 NULL, /* class_data */
124 sizeof (VikCoordLayer),
126 NULL /* instance init */
128 vcl_type = g_type_register_static ( VIK_LAYER_TYPE, "VikCoordLayer", &vcl_info, 0 );
134 static void coord_layer_marshall( VikCoordLayer *vcl, guint8 **data, gint *len )
136 vik_layer_marshall_params ( VIK_LAYER(vcl), data, len );
139 static VikCoordLayer *coord_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp )
141 VikCoordLayer *rv = vik_coord_layer_new ( vvp );
142 vik_layer_unmarshall_params ( VIK_LAYER(rv), data, len, vvp );
146 gboolean coord_layer_set_param ( VikCoordLayer *vcl, guint16 id, VikLayerParamData data, VikViewport *vp )
150 case PARAM_COLOR: if ( vcl->color ) gdk_color_free ( vcl->color ); vcl->color = gdk_color_copy( &(data.c)); break;
151 case PARAM_MIN_INC: vcl->deg_inc = data.d / 60.0; break;
152 case PARAM_LINE_THICKNESS: if ( data.u >= 1 && data.u <= 15 ) vcl->line_thickness = data.u; break;
157 static VikLayerParamData coord_layer_get_param ( VikCoordLayer *vcl, guint16 id )
159 VikLayerParamData rv;
165 rv.c.pixel = vcl->color->pixel;
166 rv.c.red = vcl->color->red;
167 rv.c.green = vcl->color->green;
168 rv.c.blue = vcl->color->blue;
171 case PARAM_MIN_INC: rv.d = vcl->deg_inc * 60.0; break;
172 case PARAM_LINE_THICKNESS: rv.i = vcl->line_thickness; break;
177 static void coord_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file )
179 VikCoordLayer *vcl = VIK_COORD_LAYER(vl);
181 g_object_unref ( G_OBJECT(vcl->gc) );
183 vcl->gc = vik_viewport_new_gc_from_color ( vp, vcl->color, vcl->line_thickness );
187 VikCoordLayer *vik_coord_layer_new ( )
191 VikCoordLayer *vcl = VIK_COORD_LAYER ( g_object_new ( VIK_COORD_LAYER_TYPE, NULL ) );
192 vik_layer_init ( VIK_LAYER(vcl), VIK_LAYER_COORD );
195 InitColor.red = 65535;
196 InitColor.green = 65535;
197 InitColor.blue = 65535;
200 vcl->deg_inc = 1.0/60.0;
201 vcl->line_thickness = 3;
202 vcl->color = gdk_color_copy (&InitColor);
206 void vik_coord_layer_draw ( VikCoordLayer *vcl, gpointer data )
208 VikViewport *vp = (VikViewport *) data;
214 if ( vik_viewport_get_coord_mode(vp) != VIK_COORD_UTM )
216 VikCoord left, right, left2, right2;
218 gint x1, y1, x2, y2, smod = 1, mmod = 1;
219 gboolean mins = FALSE, secs = FALSE;
220 GdkGC *dgc = vik_viewport_new_gc_from_color(vp, vcl->color, vcl->line_thickness);
221 GdkGC *mgc = vik_viewport_new_gc_from_color(vp, vcl->color, MAX(vcl->line_thickness/2, 1));
222 GdkGC *sgc = vik_viewport_new_gc_from_color(vp, vcl->color, MAX(vcl->line_thickness/5, 1));
224 vik_viewport_screen_to_coord ( vp, 0, 0, &left );
225 vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), 0, &right );
226 vik_viewport_screen_to_coord ( vp, 0, vik_viewport_get_height(vp), &left2 );
227 vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), vik_viewport_get_height(vp), &right2 );
229 #define CLINE(gc, c1, c2) { \
230 vik_viewport_coord_to_screen(vp, (c1), &x1, &y1); \
231 vik_viewport_coord_to_screen(vp, (c2), &x2, &y2); \
232 vik_viewport_draw_line (vp, (gc), x1, y1, x2, y2); \
237 if (60*fabs(l-r) < 4) {
239 smod = MIN(6, (int)ceil(3600*fabs(l-r)/30.0));
243 mmod = MIN(6, (int)ceil(60*fabs(l-r)/30.0));
245 for (i=floor(l*60); i<ceil(r*60); i+=1.0) {
247 for (j=i*60+1; j<(i+1)*60; j+=1.0) {
248 left.east_west = j/3600.0;
249 left2.east_west = j/3600.0;
250 if ((int)j % smod == 0) CLINE(sgc, &left, &left2);
254 left.east_west = i/60.0;
255 left2.east_west = i/60.0;
256 if ((int)i % mmod == 0) CLINE(mgc, &left, &left2);
258 if ((int)i % 60 == 0) {
259 left.east_west = i/60.0;
260 left2.east_west = i/60.0;
261 CLINE(dgc, &left, &left2);
265 vik_viewport_screen_to_coord ( vp, 0, 0, &left );
266 l = left2.north_south;
267 r = left.north_south;
268 for (i=floor(l*60); i<ceil(r*60); i+=1.0) {
270 for (j=i*60+1; j<(i+1)*60; j+=1.0) {
271 left.north_south = j/3600.0;
272 right.north_south = j/3600.0;
273 if ((int)j % smod == 0) CLINE(sgc, &left, &right);
277 left.north_south = i/60.0;
278 right.north_south = i/60.0;
279 if ((int)i % mmod == 0) CLINE(mgc, &left, &right);
281 if ((int)i % 60 == 0) {
282 left.north_south = i/60.0;
283 right.north_south = i/60.0;
284 CLINE(dgc, &left, &right);
294 if ( vik_viewport_get_coord_mode(vp) == VIK_COORD_UTM )
296 const struct UTM *center = (const struct UTM *)vik_viewport_get_center ( vp );
297 gdouble xmpp = vik_viewport_get_xmpp ( vp ), ympp = vik_viewport_get_ympp ( vp );
298 guint16 width = vik_viewport_get_width ( vp ), height = vik_viewport_get_height ( vp );
299 struct LatLon ll, ll2, min, max;
305 utm.northing = center->northing - ( ympp * height / 2 );
307 a_coords_utm_to_latlon ( &utm, &ll );
309 utm.northing = center->northing + ( ympp * height / 2 );
311 a_coords_utm_to_latlon ( &utm, &ll2 );
314 /* find corner coords in lat/lon.
315 start at whichever is less: top or bottom left lon. goto whichever more: top or bottom right lon
317 struct LatLon topleft, topright, bottomleft, bottomright;
320 temp_utm.easting -= (width/2)*xmpp;
321 temp_utm.northing += (height/2)*ympp;
322 a_coords_utm_to_latlon ( &temp_utm, &topleft );
323 temp_utm.easting += (width*xmpp);
324 a_coords_utm_to_latlon ( &temp_utm, &topright );
325 temp_utm.northing -= (height*ympp);
326 a_coords_utm_to_latlon ( &temp_utm, &bottomright );
327 temp_utm.easting -= (width*xmpp);
328 a_coords_utm_to_latlon ( &temp_utm, &bottomleft );
329 min.lon = (topleft.lon < bottomleft.lon) ? topleft.lon : bottomleft.lon;
330 max.lon = (topright.lon > bottomright.lon) ? topright.lon : bottomright.lon;
331 min.lat = (bottomleft.lat < bottomright.lat) ? bottomleft.lat : bottomright.lat;
332 max.lat = (topleft.lat > topright.lat) ? topleft.lat : topright.lat;
335 lon = ((double) ((long) ((min.lon)/ vcl->deg_inc))) * vcl->deg_inc;
336 ll.lon = ll2.lon = lon;
338 for (; ll.lon <= max.lon; ll.lon+=vcl->deg_inc, ll2.lon+=vcl->deg_inc )
340 a_coords_latlon_to_utm ( &ll, &utm );
341 x1 = ( (utm.easting - center->easting) / xmpp ) + (width / 2);
342 a_coords_latlon_to_utm ( &ll2, &utm );
343 x2 = ( (utm.easting - center->easting) / xmpp ) + (width / 2);
344 vik_viewport_draw_line (vp, vcl->gc, x1, height, x2, 0);
348 utm.easting = center->easting - ( xmpp * width / 2 );
350 a_coords_utm_to_latlon ( &utm, &ll );
352 utm.easting = center->easting + ( xmpp * width / 2 );
354 a_coords_utm_to_latlon ( &utm, &ll2 );
356 /* really lat, just reusing a variable */
357 lon = ((double) ((long) ((min.lat)/ vcl->deg_inc))) * vcl->deg_inc;
358 ll.lat = ll2.lat = lon;
360 for (; ll.lat <= max.lat ; ll.lat+=vcl->deg_inc, ll2.lat+=vcl->deg_inc )
362 a_coords_latlon_to_utm ( &ll, &utm );
363 x1 = (height / 2) - ( (utm.northing - center->northing) / ympp );
364 a_coords_latlon_to_utm ( &ll2, &utm );
365 x2 = (height / 2) - ( (utm.northing - center->northing) / ympp );
366 vik_viewport_draw_line (vp, vcl->gc, width, x2, 0, x1);
371 void vik_coord_layer_free ( VikCoordLayer *vcl )
373 if ( vcl->gc != NULL )
374 g_object_unref ( G_OBJECT(vcl->gc) );
376 if ( vcl->color != NULL )
377 gdk_color_free ( vcl->color );
380 static void coord_layer_update_gc ( VikCoordLayer *vcl, VikViewport *vp, const gchar *color )
385 gdk_color_free ( vcl->color );
387 gdk_color_parse( color, &InitColor);
388 vcl->color = gdk_color_copy( &InitColor );
391 g_object_unref ( G_OBJECT(vcl->gc) );
393 vcl->gc = vik_viewport_new_gc_from_color ( vp, vcl->color, vcl->line_thickness );
396 VikCoordLayer *vik_coord_layer_create ( VikViewport *vp )
398 VikCoordLayer *vcl = vik_coord_layer_new ();
399 coord_layer_update_gc ( vcl, vp, "red" );