2 * Copyright (C) 2009 Andy Spencer <spenceal@rose-hulman.edu>
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #include <curl/curl.h>
25 #include "aweather-gui.h"
45 static layer_t layers[] = {
46 [LAYER_TOPO] = { "Topo", "Overlays/" "Topo/" "Short/" "%s_Topo_Short.jpg", TRUE, 1, 0 },
47 [LAYER_COUNTY] = { "Counties", "Overlays/" "County/" "Short/" "%s_County_Short.gif", TRUE, 3, 0 },
48 [LAYER_RIVERS] = { "Rivers", "Overlays/" "Rivers/" "Short/" "%s_Rivers_Short.gif", FALSE, 4, 0 },
49 [LAYER_HIGHWAYS] = { "Highways", "Overlays/" "Highways/" "Short/" "%s_Highways_Short.gif", TRUE, 5, 0 },
50 [LAYER_CITY] = { "Cities", "Overlays/" "Cities/" "Short/" "%s_City_Short.gif", TRUE, 6, 0 },
53 static AWeatherGui *gui = NULL;
56 * Load an image into an OpenGL texture
57 * \param filename Path to the image file
58 * \return The OpenGL identifier for the texture
60 void load_texture(gchar *filename, gpointer _layer)
62 layer_t *layer = _layer;
63 aweather_gui_gl_begin(gui);
66 GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(filename, NULL);
68 g_warning("Failed to load texture: %s", filename);
69 guchar *pixels = gdk_pixbuf_get_pixels(pixbuf);
70 int width = gdk_pixbuf_get_width(pixbuf);
71 int height = gdk_pixbuf_get_height(pixbuf);
72 int format = gdk_pixbuf_get_has_alpha(pixbuf) ? GL_RGBA : GL_RGB;
75 glGenTextures(1, &layer->tex);
76 glBindTexture(GL_TEXTURE_2D, layer->tex); // 2d texture (x and y size)
78 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
79 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0,
80 format, GL_UNSIGNED_BYTE, pixels);
81 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
82 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
84 char *base = g_path_get_basename(filename);
85 g_message("loaded image: w=%-3d h=%-3d fmt=%x px=(%02x,%02x,%02x,%02x) img=%s",
86 width, height, format, pixels[0], pixels[1], pixels[2], pixels[3],
90 aweather_gui_gl_end(gui);
93 gtk_widget_queue_draw(aweather_gui_get_widget(gui, "drawing"));
96 static void set_site(AWeatherView *view, gchar *site, gpointer user_data)
98 g_message("location changed to %s", site);
99 for (int i = 0; i < LAYER_COUNT; i++) {
100 gchar *base = "http://radar.weather.gov/ridge/";
101 gchar *path = g_strdup_printf(layers[i].fmt, site);
102 cache_file(base, path, load_texture, &layers[i]);
107 static gboolean expose(GtkWidget *da, GdkEventExpose *event, gpointer user_data)
109 g_message("ridge:expose");
111 glEnable(GL_TEXTURE_2D);
114 for (int i = 0; i < LAYER_COUNT; i++) {
115 if (!layers[i].enabled)
117 glBindTexture(GL_TEXTURE_2D, layers[i].tex);
119 glTexCoord2f(0.0, 0.0); glVertex3f(250*1000*-1.0, 250*1000* 1.0, layers[i].z);
120 glTexCoord2f(0.0, 1.0); glVertex3f(250*1000*-1.0, 250*1000*-1.0, layers[i].z);
121 glTexCoord2f(1.0, 1.0); glVertex3f(250*1000* 1.0, 250*1000*-1.0, layers[i].z);
122 glTexCoord2f(1.0, 0.0); glVertex3f(250*1000* 1.0, 250*1000* 1.0, layers[i].z);
130 void toggle_layer(GtkToggleButton *check, gpointer _layer)
132 layer_t *layer = _layer;
133 layer->enabled = gtk_toggle_button_get_active(check);
134 gtk_widget_queue_draw(aweather_gui_get_widget(gui, "drawing"));
137 gboolean ridge_init(AWeatherGui *_gui)
140 AWeatherView *view = aweather_gui_get_view(gui);
141 GtkWidget *drawing = aweather_gui_get_widget(gui, "drawing");
142 GtkWidget *config = aweather_gui_get_widget(gui, "tabs");
144 /* Add configuration tab */
145 GtkWidget *tab = gtk_label_new("Ridge");
146 GtkWidget *body = gtk_alignment_new(0.5, 0, 0, 0);
147 GtkWidget *hbox = gtk_hbox_new(FALSE, 10);
148 for (int i = 0; i < LAYER_COUNT; i++) {
149 GtkWidget *check = gtk_check_button_new_with_label(layers[i].name);
150 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(check), layers[i].enabled);
151 gtk_box_pack_start(GTK_BOX(hbox), check, FALSE, TRUE, 0);
152 g_signal_connect(check, "toggled", G_CALLBACK(toggle_layer), &layers[i]);
154 gtk_container_add(GTK_CONTAINER(body), hbox);
155 gtk_notebook_append_page(GTK_NOTEBOOK(config), body, tab);
157 /* Set up OpenGL Stuff */
158 g_signal_connect(drawing, "expose-event", G_CALLBACK(expose), NULL);
159 g_signal_connect(view, "location-changed", G_CALLBACK(set_site), NULL);