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fix sprintf warning
[andy/viking.git] / src / vikgeoreflayer.c
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1/*
2 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
3 *
4 * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
5 *
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.
10 *
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.
15 *
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
19 *
20 */
21
22#include "viking.h"
23#include "vikgeoreflayer_pixmap.h"
24#include <stdlib.h>
25#include <string.h>
26
27VikLayerParam georef_layer_params[] = {
28 { "image", VIK_LAYER_PARAM_STRING, VIK_LAYER_NOT_IN_PROPERTIES },
29 { "corner_easting", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_NOT_IN_PROPERTIES },
30 { "corner_northing", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_NOT_IN_PROPERTIES },
31 { "mpp_easting", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_NOT_IN_PROPERTIES },
32 { "mpp_northing", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_NOT_IN_PROPERTIES },
33};
34
35enum { PARAM_IMAGE = 0, PARAM_CE, PARAM_CN, PARAM_ME, PARAM_MN, NUM_PARAMS };
36
37static VikGeorefLayer *georef_layer_copy ( VikGeorefLayer *vgl, gpointer vp );
38static gboolean georef_layer_set_param ( VikGeorefLayer *vgl, guint16 id, VikLayerParamData data, VikViewport *vp );
39static VikLayerParamData georef_layer_get_param ( VikGeorefLayer *vgl, guint16 id );
40VikGeorefLayer *georef_layer_new ( );
41VikGeorefLayer *georef_layer_create ( VikViewport *vp );
42static void georef_layer_free ( VikGeorefLayer *vgl );
43gboolean georef_layer_properties ( VikGeorefLayer *vgl, gpointer vp );
44static void georef_layer_draw ( VikGeorefLayer *vgl, gpointer data );
45static void georef_layer_add_menu_items ( VikGeorefLayer *vgl, GtkMenu *menu, gpointer vlp );
46static void georef_layer_set_image ( VikGeorefLayer *vgl, const gchar *image );
47static gboolean georef_layer_dialog ( VikGeorefLayer **vgl, gpointer vp, GtkWindow *w );
48static void georef_layer_load_image ( VikGeorefLayer *vgl );
49static gboolean georef_layer_move_release ( VikGeorefLayer *vgl, GdkEventButton *event, VikViewport *vvp );
50static gboolean georef_layer_move_press ( VikGeorefLayer *vgl, GdkEventButton *event, VikViewport *vvp );
51static gboolean georef_layer_zoom_press ( VikGeorefLayer *vgl, GdkEventButton *event, VikViewport *vvp );
52
53static VikToolInterface georef_tools[] = {
54 { "Georef Move Map", (VikToolInterfaceFunc) georef_layer_move_press, (VikToolInterfaceFunc) georef_layer_move_release },
55 { "Georef Zoom Tool", (VikToolInterfaceFunc) georef_layer_zoom_press, NULL },
56};
57
58VikLayerInterface vik_georef_layer_interface = {
59 "GeoRef Map",
60 &georeflayer_pixbuf, /*icon */
61
62 georef_tools,
63 sizeof(georef_tools) / sizeof(VikToolInterface),
64
65 georef_layer_params,
66 NUM_PARAMS,
67 NULL,
68 0,
69
70 (VikLayerFuncCreate) georef_layer_create,
71 (VikLayerFuncRealize) NULL,
72 (VikLayerFuncPostRead) georef_layer_load_image,
73 (VikLayerFuncFree) georef_layer_free,
74
75 (VikLayerFuncProperties) georef_layer_properties,
76 (VikLayerFuncDraw) georef_layer_draw,
77 (VikLayerFuncChangeCoordMode) NULL,
78
79 (VikLayerFuncAddMenuItems) georef_layer_add_menu_items,
80 (VikLayerFuncSublayerAddMenuItems) NULL,
81
82 (VikLayerFuncSublayerRenameRequest) NULL,
83 (VikLayerFuncSublayerToggleVisible) NULL,
84
85 (VikLayerFuncCopy) georef_layer_copy,
86 (VikLayerFuncMarshall) NULL,
87 (VikLayerFuncUnmarshall) NULL,
88
89 (VikLayerFuncSetParam) georef_layer_set_param,
90 (VikLayerFuncGetParam) georef_layer_get_param,
91
92 (VikLayerFuncReadFileData) NULL,
93 (VikLayerFuncWriteFileData) NULL,
94
95 (VikLayerFuncCopyItem) NULL,
96 (VikLayerFuncPasteItem) NULL,
97 (VikLayerFuncFreeCopiedItem) NULL,
98 (VikLayerFuncDragDropRequest) NULL,
99};
100
101struct _VikGeorefLayer {
102 VikLayer vl;
103 gchar *image;
104 GdkPixbuf *pixbuf;
105 struct UTM corner;
106 gdouble mpp_easting, mpp_northing;
107 guint width, height;
108
109 gint click_x, click_y;
110};
111
112
113
114GType vik_georef_layer_get_type ()
115{
116 static GType vgl_type = 0;
117
118 if (!vgl_type)
119 {
120 static const GTypeInfo vgl_info =
121 {
122 sizeof (VikGeorefLayerClass),
123 NULL, /* base_init */
124 NULL, /* base_finalize */
125 NULL, /* class init */
126 NULL, /* class_finalize */
127 NULL, /* class_data */
128 sizeof (VikGeorefLayer),
129 0,
130 NULL /* instance init */
131 };
132 vgl_type = g_type_register_static ( VIK_LAYER_TYPE, "VikGeorefLayer", &vgl_info, 0 );
133 }
134
135 return vgl_type;
136}
137
138static VikGeorefLayer *georef_layer_copy ( VikGeorefLayer *vgl, gpointer vp )
139{
140 VikGeorefLayer *rv = georef_layer_new ();
141 rv->corner = vgl->corner;
142 rv->mpp_easting = vgl->mpp_easting;
143 rv->mpp_northing = vgl->mpp_northing;
144 rv->width = vgl->width;
145 rv->height = vgl->height;
146
147 if ( vgl->image )
148 {
149 rv->image = g_strdup ( vgl->image );
150 georef_layer_load_image ( rv );
151 }
152 return rv;
153}
154
155static gboolean georef_layer_set_param ( VikGeorefLayer *vgl, guint16 id, VikLayerParamData data, VikViewport *vp )
156{
157 switch ( id )
158 {
159 case PARAM_IMAGE: georef_layer_set_image ( vgl, data.s ); break;
160 case PARAM_CN: vgl->corner.northing = data.d; break;
161 case PARAM_CE: vgl->corner.easting = data.d; break;
162 case PARAM_MN: vgl->mpp_northing = data.d; break;
163 case PARAM_ME: vgl->mpp_easting = data.d; break;
164 }
165 return TRUE;
166}
167
168static VikLayerParamData georef_layer_get_param ( VikGeorefLayer *vgl, guint16 id )
169{
170 VikLayerParamData rv;
171 switch ( id )
172 {
173 case PARAM_IMAGE: rv.s = vgl->image ? vgl->image : ""; break;
174 case PARAM_CN: rv.d = vgl->corner.northing; break;
175 case PARAM_CE: rv.d = vgl->corner.easting; break;
176 case PARAM_MN: rv.d = vgl->mpp_northing; break;
177 case PARAM_ME: rv.d = vgl->mpp_easting; break;
178 }
179 return rv;
180}
181
182VikGeorefLayer *georef_layer_new ( )
183{
184 VikGeorefLayer *vgl = VIK_GEOREF_LAYER ( g_object_new ( VIK_GEOREF_LAYER_TYPE, NULL ) );
185 vik_layer_init ( VIK_LAYER(vgl), VIK_LAYER_GEOREF );
186
187 vgl->image = NULL;
188 vgl->pixbuf = NULL;
189 vgl->click_x = -1;
190 vgl->click_y = -1;
191 return vgl;
192}
193
194static void georef_layer_draw ( VikGeorefLayer *vgl, gpointer data )
195{
196/* bla, bla */
197 if ( vgl->pixbuf )
198 {
199 VikViewport *vp = VIK_VIEWPORT(data);
200 struct UTM utm_middle;
201 gdouble xmpp = vik_viewport_get_xmpp(vp), ympp = vik_viewport_get_ympp(vp);
202 vik_coord_to_utm ( vik_viewport_get_center ( vp ), &utm_middle );
203
204 if ( xmpp == vgl->mpp_easting && ympp == vgl->mpp_northing )
205 {
206 guint width = vik_viewport_get_width(vp), height = vik_viewport_get_height(vp);
207 gint32 x, y;
208 vgl->corner.zone = utm_middle.zone;
209 vgl->corner.letter = utm_middle.letter;
210 VikCoord corner_coord;
211 vik_coord_load_from_utm ( &corner_coord, vik_viewport_get_coord_mode(vp), &(vgl->corner) );
212 vik_viewport_coord_to_screen ( vp, &corner_coord, &x, &y );
213 if ( (x < 0 || x < width) && (y < 0 || y < height) && x+vgl->width > 0 && y+vgl->height > 0 )
214 vik_viewport_draw_pixbuf ( vp, vgl->pixbuf, 0, 0, x, y, vgl->width, vgl->height ); /* todo: draw only what we need to. */
215 }
216 }
217}
218
219static void georef_layer_free ( VikGeorefLayer *vgl )
220{
221 if ( vgl->image != NULL )
222 g_free ( vgl->image );
223}
224
225VikGeorefLayer *georef_layer_create ( VikViewport *vp )
226{
227 return georef_layer_new ();
228}
229
230gboolean georef_layer_properties ( VikGeorefLayer *vgl, gpointer vp )
231{
232 return georef_layer_dialog ( &vgl, vp, VIK_GTK_WINDOW_FROM_WIDGET(vp) );
233}
234
235static void georef_layer_load_image ( VikGeorefLayer *vgl )
236{
237 GError *gx = NULL;
238 if ( vgl->image == NULL )
239 return;
240
241 if ( vgl->pixbuf )
242 g_object_unref ( G_OBJECT(vgl->pixbuf) );
243
244 vgl->pixbuf = gdk_pixbuf_new_from_file ( vgl->image, &gx );
245
246 if (gx)
247 {
248 g_warning ( "Couldn't open image file: %s", gx->message );
249 g_error_free ( gx );
250 }
251 else
252 {
253 vgl->width = gdk_pixbuf_get_width ( vgl->pixbuf );
254 vgl->height = gdk_pixbuf_get_height ( vgl->pixbuf );
255 }
256
257 /* should find length and width here too */
258}
259
260static void georef_layer_set_image ( VikGeorefLayer *vgl, const gchar *image )
261{
262 if ( vgl->image )
263 g_free ( vgl->image );
264 if ( image == NULL )
265 vgl->image = NULL;
266 vgl->image = g_strdup ( image );
267}
268
269static gboolean world_file_read_line ( gchar *buffer, gint size, FILE *f, GtkWidget *widget, gboolean use_value )
270{
271 if (!fgets ( buffer, 1024, f ))
272 {
273 a_dialog_error_msg ( VIK_GTK_WINDOW_FROM_WIDGET(widget), "Unexpected end of file reading World file." );
274 g_free ( buffer );
275 fclose ( f );
276 return FALSE;
277 }
278 if ( use_value )
279 {
280 gdouble val = strtod ( buffer, NULL );
281 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(widget), val > 0 ? val : -val );
282 }
283 return TRUE;
284}
285
286static void georef_layer_dialog_load ( GtkWidget *pass_along[4] )
287{
288 GtkWidget *file_selector = gtk_file_selection_new ("Choose World file");
289
290 if ( gtk_dialog_run ( GTK_DIALOG ( file_selector ) ) == GTK_RESPONSE_OK )
291 {
292 FILE *f = fopen ( gtk_file_selection_get_filename ( GTK_FILE_SELECTION(file_selector) ), "r" );
293 gtk_widget_destroy ( file_selector );
294 if ( !f )
295 {
296 a_dialog_error_msg ( VIK_GTK_WINDOW_FROM_WIDGET(pass_along[0]), "The World file you requested could not be opened for reading." );
297 return;
298 }
299 else
300 {
301 gchar *buffer = g_malloc ( 1024 * sizeof(gchar) );
302 if ( world_file_read_line ( buffer, 1024, f, pass_along[0], TRUE ) && world_file_read_line ( buffer, 1024, f, pass_along[1], TRUE )
303 && world_file_read_line ( buffer, 1024, f, pass_along[0], FALSE ) && world_file_read_line ( buffer, 1024, f, pass_along[0], FALSE )
304 && world_file_read_line ( buffer, 1024, f, pass_along[2], TRUE ) && world_file_read_line ( buffer, 1024, f, pass_along[3], TRUE ) )
305 {
306 g_free ( buffer );
307 fclose ( f );
308 }
309 }
310 }
311 else
312 gtk_widget_destroy ( file_selector );
313/* do your jazz
314We need a
315 file selection dialog
316 file opener for reading, if NULL, send error_msg ( VIK_GTK_WINDOW_FROM_WIDGET(pass_along[0]) )
317 does that catch directories too?
318 read lines -- if not enough lines, give error.
319 if anything outside, give error. define range with #define CONSTANTS
320 put 'em in thar widgets, and that's it.
321*/
322}
323
324static void georef_layer_export_params ( gpointer *pass_along[2] )
325{
326 VikGeorefLayer *vgl = VIK_GEOREF_LAYER(pass_along[0]);
327 GtkWidget *file_selector = gtk_file_selection_new ("Choose World file");
328
329 if ( gtk_dialog_run ( GTK_DIALOG ( file_selector ) ) == GTK_RESPONSE_OK )
330 {
331 FILE *f = fopen ( gtk_file_selection_get_filename ( GTK_FILE_SELECTION(file_selector) ), "w" );
332 gtk_widget_destroy ( file_selector );
333 if ( !f )
334 {
335 a_dialog_error_msg ( VIK_GTK_WINDOW_FROM_WIDGET(pass_along[0]), "The file you requested could not be opened for writing." );
336 return;
337 }
338 else
339 {
340 fprintf ( f, "%f\n%f\n%f\n%f\n%f\n%f\n", vgl->mpp_easting, vgl->mpp_northing, 0.0, 0.0, vgl->corner.easting, vgl->corner.northing );
341 fclose ( f );
342 }
343 }
344 else
345 gtk_widget_destroy ( file_selector );
346}
347
348/* returns TRUE if OK was pressed. */
349static gboolean georef_layer_dialog ( VikGeorefLayer **vgl, gpointer vp, GtkWindow *w )
350{
351 GtkWidget *dialog = gtk_dialog_new_with_buttons ("Layer Properties",
352 w,
353 GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
354 GTK_STOCK_CANCEL,
355 GTK_RESPONSE_REJECT,
356 GTK_STOCK_OK,
357 GTK_RESPONSE_ACCEPT,
358 0 );
359 GtkWidget *table, *wfp_hbox, *wfp_label, *wfp_button, *ce_label, *ce_spin, *cn_label, *cn_spin, *xlabel, *xspin, *ylabel, *yspin, *imagelabel, *imageentry;
360
361 GtkWidget *pass_along[4];
362
363 table = gtk_table_new ( 6, 2, FALSE );
364 gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), table, TRUE, TRUE, 0 );
365
366 wfp_hbox = gtk_hbox_new ( FALSE, 0 );
367 wfp_label = gtk_label_new ( "World File Parameters:" );
368 wfp_button = gtk_button_new_with_label ( "Load From File..." );
369
370 gtk_box_pack_start ( GTK_BOX(wfp_hbox), wfp_label, TRUE, TRUE, 0 );
371 gtk_box_pack_start ( GTK_BOX(wfp_hbox), wfp_button, FALSE, FALSE, 3 );
372
373 ce_label = gtk_label_new ( "Corner pixel easting:" );
374 ce_spin = gtk_spin_button_new ( (GtkAdjustment *) gtk_adjustment_new ( 4, 0.0, 1500000.0, 1, 5, 5 ), 1, 4 );
375
376 cn_label = gtk_label_new ( "Corner pixel northing:" );
377 cn_spin = gtk_spin_button_new ( (GtkAdjustment *) gtk_adjustment_new ( 4, 0.0, 9000000.0, 1, 5, 5 ), 1, 4 );
378
379 xlabel = gtk_label_new ( "X (easting) scale (mpp): ");
380 ylabel = gtk_label_new ( "Y (northing) scale (mpp): ");
381
382 xspin = gtk_spin_button_new ( (GtkAdjustment *) gtk_adjustment_new ( 4, VIK_VIEWPORT_MIN_ZOOM, VIK_VIEWPORT_MAX_ZOOM, 1, 5, 5 ), 1, 8 );
383 yspin = gtk_spin_button_new ( (GtkAdjustment *) gtk_adjustment_new ( 4, VIK_VIEWPORT_MIN_ZOOM, VIK_VIEWPORT_MAX_ZOOM, 1, 5, 5 ), 1, 8 );
384
385 imagelabel = gtk_label_new ( "Map Image:" );
386 imageentry = vik_file_entry_new ();
387
388 if (*vgl)
389 {
390 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(ce_spin), (*vgl)->corner.easting );
391 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(cn_spin), (*vgl)->corner.northing );
392 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(xspin), (*vgl)->mpp_easting );
393 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(yspin), (*vgl)->mpp_northing );
394 if ( (*vgl)->image )
395 vik_file_entry_set_filename ( VIK_FILE_ENTRY(imageentry), (*vgl)->image );
396 }
397 else
398 {
399 VikCoord corner_coord;
400 struct UTM utm;
401 vik_viewport_screen_to_coord ( VIK_VIEWPORT(vp), 0, 0, &corner_coord );
402 vik_coord_to_utm ( &corner_coord, &utm );
403 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(ce_spin), utm.easting );
404 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(cn_spin), utm.northing );
405 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(xspin), vik_viewport_get_xmpp ( VIK_VIEWPORT(vp) ) );
406 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(yspin), vik_viewport_get_ympp ( VIK_VIEWPORT(vp) ) );
407 }
408
409 gtk_table_attach_defaults ( GTK_TABLE(table), imagelabel, 0, 1, 0, 1 );
410 gtk_table_attach_defaults ( GTK_TABLE(table), imageentry, 1, 2, 0, 1 );
411 gtk_table_attach_defaults ( GTK_TABLE(table), wfp_hbox, 0, 2, 1, 2 );
412 gtk_table_attach_defaults ( GTK_TABLE(table), xlabel, 0, 1, 2, 3 );
413 gtk_table_attach_defaults ( GTK_TABLE(table), xspin, 1, 2, 2, 3 );
414 gtk_table_attach_defaults ( GTK_TABLE(table), ylabel, 0, 1, 3, 4 );
415 gtk_table_attach_defaults ( GTK_TABLE(table), yspin, 1, 2, 3, 4 );
416 gtk_table_attach_defaults ( GTK_TABLE(table), ce_label, 0, 1, 4, 5 );
417 gtk_table_attach_defaults ( GTK_TABLE(table), ce_spin, 1, 2, 4, 5 );
418 gtk_table_attach_defaults ( GTK_TABLE(table), cn_label, 0, 1, 5, 6 );
419 gtk_table_attach_defaults ( GTK_TABLE(table), cn_spin, 1, 2, 5, 6 );
420
421 pass_along[0] = xspin;
422 pass_along[1] = yspin;
423 pass_along[2] = ce_spin;
424 pass_along[3] = cn_spin;
425 g_signal_connect_swapped ( G_OBJECT(wfp_button), "clicked", G_CALLBACK(georef_layer_dialog_load), pass_along );
426
427 gtk_widget_show_all ( table );
428
429 if ( gtk_dialog_run ( GTK_DIALOG(dialog) ) == GTK_RESPONSE_ACCEPT )
430 {
431 if (! *vgl)
432 {
433 *vgl = georef_layer_new ();
434 vik_layer_rename ( VIK_LAYER(*vgl), vik_georef_layer_interface.name );
435 }
436 (*vgl)->corner.easting = gtk_spin_button_get_value ( GTK_SPIN_BUTTON(ce_spin) );
437 (*vgl)->corner.northing = gtk_spin_button_get_value ( GTK_SPIN_BUTTON(cn_spin) );
438 (*vgl)->mpp_easting = gtk_spin_button_get_value ( GTK_SPIN_BUTTON(xspin) );
439 (*vgl)->mpp_northing = gtk_spin_button_get_value ( GTK_SPIN_BUTTON(yspin) );
440 if ( (!(*vgl)->image) || strcmp( (*vgl)->image, vik_file_entry_get_filename(VIK_FILE_ENTRY(imageentry)) ) != 0 )
441 {
442 georef_layer_set_image ( *vgl, vik_file_entry_get_filename(VIK_FILE_ENTRY(imageentry)) );
443 georef_layer_load_image ( *vgl );
444 }
445
446 gtk_widget_destroy ( GTK_WIDGET(dialog) );
447 return TRUE;
448 }
449 gtk_widget_destroy ( GTK_WIDGET(dialog) );
450 return FALSE;
451}
452
453static void georef_layer_zoom_to_fit ( gpointer vgl_vlp[2] )
454{
455 vik_viewport_set_xmpp ( vik_layers_panel_get_viewport(VIK_LAYERS_PANEL(vgl_vlp[1])), VIK_GEOREF_LAYER(vgl_vlp[0])->mpp_easting );
456 vik_viewport_set_ympp ( vik_layers_panel_get_viewport(VIK_LAYERS_PANEL(vgl_vlp[1])), VIK_GEOREF_LAYER(vgl_vlp[0])->mpp_northing );
457 vik_layers_panel_emit_update ( VIK_LAYERS_PANEL(vgl_vlp[1]) );
458}
459
460static void georef_layer_goto_center ( gpointer vgl_vlp[2] )
461{
462 VikGeorefLayer *vgl = VIK_GEOREF_LAYER ( vgl_vlp[0] );
463 VikViewport *vp = vik_layers_panel_get_viewport(VIK_LAYERS_PANEL(vgl_vlp[1]));
464 struct UTM utm;
465 VikCoord coord;
466
467 vik_coord_to_utm ( vik_viewport_get_center ( vp ), &utm );
468
469 utm.easting = vgl->corner.easting + (vgl->width * vgl->mpp_easting / 2); /* only an approximation */
470 utm.northing = vgl->corner.northing - (vgl->height * vgl->mpp_northing / 2);
471
472 vik_coord_load_from_utm ( &coord, vik_viewport_get_coord_mode ( vp ), &utm );
473 vik_viewport_set_center_coord ( vp, &coord );
474
475 vik_layers_panel_emit_update ( VIK_LAYERS_PANEL(vgl_vlp[1]) );
476}
477
478static void georef_layer_add_menu_items ( VikGeorefLayer *vgl, GtkMenu *menu, gpointer vlp )
479{
480 static gpointer pass_along[2];
481 GtkWidget *item;
482 pass_along[0] = vgl;
483 pass_along[1] = vlp;
484
485 item = gtk_menu_item_new();
486 gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
487 gtk_widget_show ( item );
488
489 item = gtk_menu_item_new_with_label ( "Zoom to Fit Map" );
490 g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(georef_layer_zoom_to_fit), pass_along );
491 gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
492 gtk_widget_show ( item );
493
494 item = gtk_menu_item_new_with_label ( "Goto Map Center" );
495 g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(georef_layer_goto_center), pass_along );
496 gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
497 gtk_widget_show ( item );
498
499 item = gtk_menu_item_new_with_label ( "Export to World File" );
500 g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(georef_layer_export_params), pass_along );
501 gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
502 gtk_widget_show ( item );
503}
504
505static gboolean georef_layer_move_release ( VikGeorefLayer *vgl, GdkEventButton *event, VikViewport *vvp )
506{
507 if ( vgl->click_x != -1 )
508 {
509 vgl->corner.easting += (event->x - vgl->click_x) * vik_viewport_get_xmpp (vvp);
510 vgl->corner.northing -= (event->y - vgl->click_y) * vik_viewport_get_ympp (vvp);
511 vik_layer_emit_update ( VIK_LAYER(vgl) );
512 return TRUE;
513 }
514 return FALSE; /* I didn't move anything on this layer! */
515}
516
517static gboolean georef_layer_zoom_press ( VikGeorefLayer *vgl, GdkEventButton *event, VikViewport *vvp )
518{
519 if ( event->button == 1 )
520 {
521 if ( vgl->mpp_easting < (VIK_VIEWPORT_MAX_ZOOM / 1.05) && vgl->mpp_northing < (VIK_VIEWPORT_MAX_ZOOM / 1.05) )
522 {
523 vgl->mpp_easting *= 1.01;
524 vgl->mpp_northing *= 1.01;
525 }
526 }
527 else
528 {
529 if ( vgl->mpp_easting > (VIK_VIEWPORT_MIN_ZOOM * 1.05) && vgl->mpp_northing > (VIK_VIEWPORT_MIN_ZOOM * 1.05) )
530 {
531 vgl->mpp_easting /= 1.01;
532 vgl->mpp_northing /= 1.01;
533 }
534 }
535 vik_viewport_set_xmpp ( vvp, vgl->mpp_easting );
536 vik_viewport_set_ympp ( vvp, vgl->mpp_northing );
537 vik_layer_emit_update ( VIK_LAYER(vgl) );
538 return TRUE;
539}
540
541static gboolean georef_layer_move_press ( VikGeorefLayer *vgl, GdkEventButton *event, VikViewport *vvp )
542{
543 vgl->click_x = event->x;
544 vgl->click_y = event->y;
545 return TRUE;
546}
Viking GPS editor