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 glDeleteTextures(1, &layer->tex);
76 glGenTextures(1, &layer->tex);
77 glBindTexture(GL_TEXTURE_2D, layer->tex); // 2d texture (x and y size)
79 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
80 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0,
81 format, GL_UNSIGNED_BYTE, pixels);
82 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
83 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
85 char *base = g_path_get_basename(filename);
86 g_message("loaded image: w=%-3d h=%-3d fmt=%x px=(%02x,%02x,%02x,%02x) img=%s",
87 width, height, format, pixels[0], pixels[1], pixels[2], pixels[3],
91 aweather_gui_gl_end(gui);
93 g_object_unref(pixbuf);
96 gtk_widget_queue_draw(aweather_gui_get_widget(gui, "drawing"));
99 static void set_site(AWeatherView *view, gchar *site, gpointer user_data)
101 g_message("location changed to %s", site);
102 for (int i = 0; i < LAYER_COUNT; i++) {
103 gchar *base = "http://radar.weather.gov/ridge/";
104 gchar *path = g_strdup_printf(layers[i].fmt, site);
105 cache_file(base, path, load_texture, &layers[i]);
110 static gboolean expose(GtkWidget *da, GdkEventExpose *event, gpointer user_data)
112 g_message("ridge:expose");
114 glEnable(GL_TEXTURE_2D);
117 for (int i = 0; i < LAYER_COUNT; i++) {
118 if (!layers[i].enabled)
120 glBindTexture(GL_TEXTURE_2D, layers[i].tex);
122 glTexCoord2f(0.0, 0.0); glVertex3f(250*1000*-1.0, 250*1000* 1.0, layers[i].z);
123 glTexCoord2f(0.0, 1.0); glVertex3f(250*1000*-1.0, 250*1000*-1.0, layers[i].z);
124 glTexCoord2f(1.0, 1.0); glVertex3f(250*1000* 1.0, 250*1000*-1.0, layers[i].z);
125 glTexCoord2f(1.0, 0.0); glVertex3f(250*1000* 1.0, 250*1000* 1.0, layers[i].z);
133 void toggle_layer(GtkToggleButton *check, gpointer _layer)
135 layer_t *layer = _layer;
136 layer->enabled = gtk_toggle_button_get_active(check);
137 gtk_widget_queue_draw(aweather_gui_get_widget(gui, "drawing"));
140 gboolean ridge_init(AWeatherGui *_gui)
143 AWeatherView *view = aweather_gui_get_view(gui);
144 GtkWidget *drawing = aweather_gui_get_widget(gui, "drawing");
145 GtkWidget *config = aweather_gui_get_widget(gui, "tabs");
147 /* Add configuration tab */
148 GtkWidget *tab = gtk_label_new("Ridge");
149 GtkWidget *body = gtk_alignment_new(0.5, 0, 0, 0);
150 GtkWidget *hbox = gtk_hbox_new(FALSE, 10);
151 for (int i = 0; i < LAYER_COUNT; i++) {
152 GtkWidget *check = gtk_check_button_new_with_label(layers[i].name);
153 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(check), layers[i].enabled);
154 gtk_box_pack_start(GTK_BOX(hbox), check, FALSE, TRUE, 0);
155 g_signal_connect(check, "toggled", G_CALLBACK(toggle_layer), &layers[i]);
157 gtk_container_add(GTK_CONTAINER(body), hbox);
158 gtk_notebook_append_page(GTK_NOTEBOOK(config), body, tab);
160 /* Set up OpenGL Stuff */
161 g_signal_connect(drawing, "expose-event", G_CALLBACK(expose), NULL);
162 g_signal_connect(view, "location-changed", G_CALLBACK(set_site), NULL);