err.no Git - mapper/blob - src/gtkgps.c

   1 /*
   2  *
   3  * GtkGps: Display GPS information
   4  * Copyright (C) 2007 Kaj-Michael Lang
   5  * Originanl non-widget version Copyright Cezary Jackiewicz
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 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  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public
  18  * License along with this library; if not, write to the Free
  19  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include <math.h>
  23
  24 #include <glib/gstdio.h>
  25 #include <glib-object.h>
  26 #include "gtkgps.h"
  27
  28 static void gtk_gps_finalize (GObject *object);
  29 static void gtk_gps_size_request (GtkWidget *widget, GtkRequisition *requisition);
  30 static void gtk_gps_size_allocate (GtkWidget *widget, GtkAllocation *allocate);
  31 static gboolean gtk_gps_expose (GtkWidget *widget, GdkEventExpose *event);
  32 static void gtk_gps_realize (GtkWidget *widget);
  33 static void gtk_gps_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
  34 static void gtk_gps_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
  35 static void gtk_gps_paint_by_mode(GtkGps *gps);
  36
  37 G_DEFINE_TYPE(GtkGps, gtk_gps, GTK_TYPE_WIDGET);
  38
  39 #define PADDING (15)
  40
  41 #define BOUND(x, a, b) { \
  42     if((x) < (a)) \
  43         (x) = (a); \
  44     else if((x) > (b)) \
  45         (x) = (b); \
  46 }
  47
  48 static void
  49 gtk_gps_class_init(GtkGpsClass *class)
  50 {
  51 GObjectClass *object_class;
  52 GtkWidgetClass *widget_class;
  53
  54 object_class = (GObjectClass*) class;
  55 widget_class = (GtkWidgetClass*) class;
  56
  57 object_class->finalize = gtk_gps_finalize;
  58 object_class->set_property = gtk_gps_set_property;
  59 object_class->get_property = gtk_gps_get_property;
  60
  61 widget_class->size_request = gtk_gps_size_request;
  62 widget_class->expose_event = gtk_gps_expose;
  63 widget_class->realize = gtk_gps_realize;
  64 widget_class->size_allocate = gtk_gps_size_allocate;
  65 }
  66
  67 static void
  68 gtk_gps_set_property(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
  69 {
  70 GtkGps *gps;
  71 g_return_if_fail(GTK_IS_GPS(object));
  72 gps=GTK_GPS(object);
  73 switch (prop_id) {
  74         default:
  75                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
  76         break;
  77 }
  78 }
  79
  80 static void
  81 gtk_gps_get_property(GObject *object, guint prop_id, GValue *value, GParamSpec   *pspec)
  82 {
  83 GtkGps *gps;
  84 g_return_if_fail(GTK_IS_GPS(object));
  85 gps=GTK_GPS(object);
  86 switch (prop_id) {
  87         default:
  88                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
  89         break;
  90 }
  91 }
  92
  93 static void
  94 gtk_gps_init(GtkGps *gps)
  95 {
  96 g_printf("%s()\n", __PRETTY_FUNCTION__);
  97
  98 gps->gc1=NULL;
  99 gps->gc2=NULL;
 100 gps->gc3=NULL;
 101 gps->width=400;
 102 gps->height=300;
 103 }
 104
 105 static gboolean
 106 gtk_gps_cb_button_press(GtkWidget * widget, GdkEventButton * event)
 107 {
 108 GtkGps *gps;
 109
 110 printf("%s()\n", __PRETTY_FUNCTION__);
 111 gps=GTK_GPS(widget);
 112
 113 if (event->button==1) {
 114         switch (gps->display_mode) {
 115         case GTK_GPS_MODE_SKY:
 116                 gps->display_mode=GTK_GPS_MODE_SIGNAL;
 117         break;
 118         case GTK_GPS_MODE_SIGNAL:
 119         default:
 120                 gps->display_mode=GTK_GPS_MODE_SKY;
 121         break;
 122         }
 123 }
 124 gtk_gps_paint_by_mode(gps);
 125 return FALSE;
 126 }
 127
 128 GtkWidget*
 129 gtk_gps_new(GtkGpsMode display_mode, GpsData *data)
 130 {
 131 GtkGps *gps;
 132 GtkWidget *widget;
 133
 134 gps=gtk_type_new(gtk_gps_get_type ());
 135 gps->display_mode=display_mode;
 136 gps->data=data;
 137 widget=GTK_WIDGET(gps);
 138 g_signal_connect(G_OBJECT(widget), "button_press_event", G_CALLBACK(gtk_gps_cb_button_press), NULL);
 139 return GTK_WIDGET(gps);
 140 }
 141
 142 static void
 143 gtk_gps_finalize(GObject *object)
 144 {
 145 GtkGps *gps;
 146
 147 g_printf("%s()\n", __PRETTY_FUNCTION__);
 148
 149 g_return_if_fail(GTK_IS_GPS(object));
 150 gps=GTK_GPS(object);
 151
 152 if (GTK_WIDGET(object)->parent && GTK_WIDGET_MAPPED(object)) {
 153         gtk_widget_unmap(GTK_WIDGET(object));
 154 }
 155
 156 G_OBJECT_CLASS(gtk_gps_parent_class)->finalize(object);
 157 }
 158
 159 static void
 160 gtk_gps_size_request(GtkWidget  *widget, GtkRequisition *requisition)
 161 {
 162 GtkGps *gps;
 163
 164 g_printf("%s()\n", __PRETTY_FUNCTION__);
 165
 166 g_return_if_fail(GTK_IS_GPS(widget));
 167 g_return_if_fail(requisition != NULL);
 168
 169 gps = GTK_GPS (widget);
 170
 171 requisition->width=400;
 172 requisition->height=300;
 173 gps->width=400;
 174 gps->height=300;
 175 }
 176
 177 static void
 178 gtk_gps_size_allocate (GtkWidget *widget, GtkAllocation *allocation)
 179 {
 180 GtkGps *gps;
 181
 182 g_printf("%s()\n", __PRETTY_FUNCTION__);
 183
 184 g_return_if_fail(GTK_IS_GPS(widget));
 185 g_return_if_fail(allocation!=NULL);
 186
 187 gps=GTK_GPS (widget);
 188
 189 widget->allocation = *allocation;
 190
 191 if (GTK_WIDGET_REALIZED (widget)) {
 192         gdk_window_move_resize (widget->window,
 193                 allocation->x, allocation->y,
 194                 allocation->width, allocation->height);
 195 }
 196
 197
 198 gps->width=allocation->width;
 199 gps->height=allocation->height;
 200 }
 201
 202 static void
 203 gtk_gps_realize (GtkWidget *widget)
 204 {
 205 GtkGps *gps;
 206 GdkColor color;
 207 GdkWindowAttr attributes;
 208 gint attributes_mask;
 209
 210 g_printf("%s()\n", __PRETTY_FUNCTION__);
 211
 212 g_return_if_fail (GTK_IS_GPS(widget));
 213 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 214 gps=GTK_GPS(widget);
 215
 216 attributes.x=widget->allocation.x;
 217 attributes.y=widget->allocation.y;
 218 attributes.width=widget->allocation.width;
 219 attributes.height=widget->allocation.height;
 220 attributes.wclass=GDK_INPUT_OUTPUT;
 221 attributes.window_type=GDK_WINDOW_CHILD;
 222 attributes.event_mask=gtk_widget_get_events(widget) | GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK;
 223 attributes.visual=gtk_widget_get_visual(widget);
 224 attributes.colormap=gtk_widget_get_colormap(widget);
 225
 226 attributes_mask=GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 227
 228 widget->window=gdk_window_new(gtk_widget_get_parent_window(widget), &attributes, attributes_mask);
 229 widget->style=gtk_style_attach(widget->style, widget->window);
 230
 231 gdk_window_set_user_data(widget->window, widget);
 232 gtk_style_set_background(widget->style, widget->window, GTK_STATE_ACTIVE);
 233
 234 gps->context=gtk_widget_get_pango_context(widget);
 235 gps->layout=pango_layout_new(gps->context);
 236 gps->fontdesc=pango_font_description_new();
 237 pango_font_description_set_family(gps->fontdesc, "Sans Serif");
 238 pango_font_description_set_size(gps->fontdesc, 10*PANGO_SCALE);
 239 pango_layout_set_font_description(gps->layout, gps->fontdesc);
 240 pango_layout_set_alignment(gps->layout, PANGO_ALIGN_CENTER);
 241
 242 if (!gps->gc1) {
 243         color.red=0;
 244         color.green=0;
 245         color.blue=0;
 246         gps->gc1=gdk_gc_new(widget->window);
 247         gdk_gc_set_rgb_fg_color(gps->gc1, &color);
 248 }
 249
 250 if (!gps->gc2) {
 251         color.red=0;
 252         color.green=0;
 253         color.blue=0xffff;
 254         gps->gc2=gdk_gc_new(widget->window);
 255         gdk_gc_set_rgb_fg_color(gps->gc2, &color);
 256 }
 257
 258 if (!gps->gc3) {
 259         color.red=0xffff;
 260         color.green=0xffff;
 261         color.blue=0xffff;
 262         gps->gc3=gdk_gc_new(widget->window);
 263         gdk_gc_set_rgb_fg_color(gps->gc3, &color);
 264 }
 265 }
 266
 267 static void
 268 gtk_gps_paint_sky(GtkGps *gps)
 269 {
 270 GdkGC *gc;
 271 GtkWidget *widget;
 272 guint i, x, y, size, halfsize, xoffset, yoffset;
 273 guint x1, y1, x0, y0;
 274 gfloat tmp;
 275 gchar buffer[16];
 276 guint line[12]={0, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330};
 277
 278 g_printf("%s()\n", __PRETTY_FUNCTION__);
 279
 280 widget=GTK_WIDGET(gps);
 281
 282 g_return_if_fail(gps->data);
 283
 284 if (!GTK_WIDGET_MAPPED(widget))
 285         return;
 286
 287 x0=0;
 288 y0=0;
 289
 290 size=MIN(gps->width, gps->height);
 291 halfsize=size/2;
 292 if (gps->width>gps->height) {
 293         xoffset=x0+(gps->width-gps->height-PADDING)/2;
 294         yoffset=y0+5;
 295 } else {
 296         xoffset=x0+5;
 297         yoffset=y0+(gps->height-gps->width-PADDING)/2;
 298 }
 299
 300 if (size<200) {
 301         pango_font_description_set_size(gps->fontdesc, 10*PANGO_SCALE);
 302         pango_layout_set_font_description(gps->layout, gps->fontdesc);
 303 } else {
 304         pango_font_description_set_size(gps->fontdesc, 12*PANGO_SCALE);
 305         pango_layout_set_font_description(gps->layout, gps->fontdesc);
 306 }
 307
 308 gtk_paint_flat_box (widget->style,
 309         widget->window,
 310         GTK_STATE_NORMAL, GTK_SHADOW_NONE,
 311         NULL, widget, "trough", 0, 0,
 312         gps->width, gps->height);
 313
 314 /* 90 */
 315 gdk_draw_arc(widget->window,
 316              widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
 317              FALSE,
 318              xoffset + 2, yoffset + 2, size - 4, size - 4, 0, 64 * 360);
 319
 320 /* 60 */
 321 gdk_draw_arc(widget->window,
 322              widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
 323              FALSE,
 324              xoffset + size / 6, yoffset + size / 6,
 325              size / 6 * 4, size / 6 * 4, 0, 64 * 360);
 326
 327 /* 30 */
 328 gdk_draw_arc(widget->window,
 329              widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
 330              FALSE,
 331              xoffset + size / 6 * 2, yoffset + size / 6 * 2,
 332              size / 6 * 2, size / 6 * 2, 0, 64 * 360);
 333
 334 for (i = 0; i < 6; i++) {
 335         /* line */
 336         tmp = (line[i] * (1.f / 180.f)) * G_PI;
 337         gdk_draw_line(widget->window,
 338                       widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
 339                       xoffset + halfsize + (halfsize - 2) * sinf(tmp),
 340                       yoffset + halfsize - (halfsize - 2) * cosf(tmp),
 341                       xoffset + halfsize - (halfsize - 2) * sinf(tmp),
 342                       yoffset + halfsize + (halfsize - 2) * cosf(tmp));
 343 }
 344
 345 for (i = 0; i < 12; i++) {
 346         tmp = (line[i] * (1.f / 180.f)) * G_PI;
 347         /* azimuth */
 348         if (line[i] == 0)
 349                 g_snprintf(buffer, 16, "N");
 350         else
 351                 g_snprintf(buffer, 16, "%d°", line[i]);
 352         pango_layout_set_text(gps->layout, buffer, -1);
 353         pango_layout_get_pixel_size(gps->layout, &x, &y);
 354         gdk_draw_layout(widget->window, widget->style->fg_gc[GTK_STATE_NORMAL],
 355                         (xoffset + halfsize + (halfsize - size / 12) * sinf(tmp)) - x / 2,
 356                         (yoffset + halfsize - (halfsize - size / 12) * cosf(tmp)) - y / 2,
 357                         gps->layout);
 358 }
 359
 360 /* elevation 30 */
 361 tmp = (30 * (1.f / 180.f)) * G_PI;
 362 g_snprintf(buffer, 16, "30°");
 363 pango_layout_set_text(gps->layout, buffer, -1);
 364 pango_layout_get_pixel_size(gps->layout, &x, &y);
 365 gdk_draw_layout(widget->window, widget->style->fg_gc[GTK_STATE_NORMAL],
 366                 (xoffset + halfsize + size / 6 * 2 * sinf(tmp)) - x / 2,
 367                 (yoffset + halfsize - size / 6 * 2 * cosf(tmp)) - y / 2,
 368                 gps->layout);
 369
 370 /* elevation 60 */
 371 tmp = (30 * (1.f / 180.f)) * G_PI;
 372 g_snprintf(buffer, 16, "60°");
 373 pango_layout_set_text(gps->layout, buffer, -1);
 374 pango_layout_get_pixel_size(gps->layout, &x, &y);
 375 gdk_draw_layout(widget->window, widget->style->fg_gc[GTK_STATE_NORMAL],
 376                 (xoffset + halfsize + size / 6 * sinf(tmp)) - x / 2,
 377                 (yoffset + halfsize - size / 6 * cosf(tmp)) - y / 2,
 378                 gps->layout);
 379
 380 for (i=0;i<gps->data->satinview;i++) {
 381         /* Sat used or not */
 382         gc=(gps->data->sat[i].fix) ? gps->gc2 : gps->gc1;
 383
 384         tmp = (gps->data->sat[i].azimuth * (1.f / 180.f)) * G_PI;
 385         x = xoffset + halfsize + (90 - gps->data->sat[i].elevation) * halfsize / 90 * sinf(tmp);
 386         y = yoffset + halfsize - (90 - gps->data->sat[i].elevation) * halfsize / 90 * cosf(tmp);
 387
 388         gdk_draw_arc(widget->window, gc, TRUE, x - 10, y - 10, 20, 20, 0, 64 * 360);
 389
 390         g_snprintf(buffer, 6, "%02d", gps->data->sat[i].prn);
 391         pango_layout_set_text(gps->layout, buffer, -1);
 392         pango_layout_get_pixel_size(gps->layout, &x1, &y1);
 393         gdk_draw_layout(widget->window, gps->gc3, x - x1 / 2, y - y1 / 2, gps->layout);
 394 }
 395
 396 g_printf("%s(): return\n", __PRETTY_FUNCTION__);
 397 return;
 398 }
 399
 400 static void
 401 gtk_gps_paint_signals(GtkGps *gps)
 402 {
 403 GdkGC *gc;
 404 GtkWidget *widget;
 405 guint step, i, snr_height, bymargin, xoffset, yoffset;
 406 guint x, y, x1, y1;
 407 gchar tmp[32];
 408
 409 g_printf("%s()\n", __PRETTY_FUNCTION__);
 410
 411 widget=GTK_WIDGET(gps);
 412
 413 if (!GTK_WIDGET_MAPPED(widget))
 414         return;
 415
 416 xoffset = 0;
 417 yoffset = 0;
 418
 419 /* Bootom margin - 12% */
 420 bymargin = gps->height * 0.88f;
 421
 422 /* Bottom line */
 423 gdk_draw_line(widget->window,
 424               widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
 425               xoffset + 5, yoffset + bymargin,
 426               xoffset + gps->width - 10 - 2, yoffset + bymargin);
 427 gdk_draw_line(widget->window,
 428               widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
 429               xoffset + 5, yoffset + bymargin - 1,
 430               xoffset + gps->width - 10 - 2, yoffset + bymargin - 1);
 431
 432 if (gps->data->satinview > 0) {
 433         /* Left margin - 5pix, Right margin - 5pix */
 434         step = (gps->width - 10) / gps->data->satinview;
 435
 436         for (i = 0; i < gps->data->satinview; i++) {
 437                 /* Sat used or not */
 438                 gc=(gps->data->sat[i].fix) ? gps->gc1 : gps->gc2;
 439
 440                 x = 5 + i * step;
 441                 snr_height = gps->data->sat[i].snr * gps->height * 0.78f / 100;
 442                 y = gps->height * 0.1f + (gps->height * 0.78f - snr_height);
 443
 444                 /* draw sat rectangle... */
 445                 gdk_draw_rectangle(widget->window,
 446                                    gc, TRUE,
 447                                    xoffset + x,
 448                                    yoffset + y, step - 2, snr_height);
 449
 450                 if (gps->data->sat[i].snr > 0) {
 451                         /* ...snr.. */
 452                         g_snprintf(tmp, 32, "%02d", gps->data->sat[i].snr);
 453                         pango_layout_set_text(gps->layout, tmp, 2);
 454                         pango_layout_get_pixel_size(gps->layout, &x1, &y1);
 455                         gdk_draw_layout(widget->window,
 456                                         widget->style->fg_gc[GTK_STATE_NORMAL],
 457                                         xoffset + x + ((step - 2) - x1) / 2,
 458                                                 yoffset + y - 15,
 459                                                 gps->layout);
 460                 }
 461
 462                 /* ...and sat number */
 463                 g_snprintf(tmp, 32, "%02d", gps->data->sat[i].prn);
 464                 pango_layout_set_text(gps->layout, tmp, 2);
 465                 pango_layout_get_pixel_size(gps->layout, &x1, &y1);
 466                 gdk_draw_layout(widget->window,
 467                                 widget->style->fg_gc[GTK_STATE_NORMAL],
 468                                 xoffset + x + ((step - 2) - x1) / 2,
 469                                 yoffset + bymargin + 1,
 470                                 gps->layout);
 471         }
 472 }
 473
 474 return;
 475 }
 476
 477 static void
 478 gtk_gps_paint_by_mode(GtkGps *gps)
 479 {
 480 g_return_if_fail(GTK_IS_GPS(gps));
 481
 482 switch (gps->display_mode) {
 483         case GTK_GPS_MODE_SIGNAL:
 484                 gtk_gps_paint_signals(gps);
 485         break;
 486         case GTK_GPS_MODE_SKY:
 487         default:
 488                 gtk_gps_paint_sky(gps);
 489         break;
 490 }
 491 }
 492
 493 static gboolean
 494 gtk_gps_expose(GtkWidget *widget, GdkEventExpose *event)
 495 {
 496 GtkGps *gps;
 497
 498 g_return_val_if_fail(GTK_IS_GPS(widget), FALSE);
 499 g_return_val_if_fail(event != NULL, FALSE);
 500
 501 gps=GTK_GPS(widget);
 502 gtk_gps_paint_by_mode(gps);
 503 return TRUE;
 504 }
 505
 506 void
 507 gtk_gps_refresh(GtkWidget *widget)
 508 {
 509 GtkGps *gps;
 510
 511 g_return_if_fail(GTK_IS_GPS(widget));
 512
 513 gps=GTK_GPS(widget);
 514 gtk_gps_paint_by_mode(gps);
 515 }