/* * Copyright (C) 2009 Andy Spencer * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #include #include #include #include #include #include "aweather-gui.h" #include "plugin-ridge.h" #include "data.h" /**************** * GObject code * ****************/ static void aweather_ridge_plugin_init(AWeatherPluginInterface *iface); static void aweather_ridge_expose(AWeatherPlugin *_ridge); G_DEFINE_TYPE_WITH_CODE(AWeatherRidge, aweather_ridge, G_TYPE_OBJECT, G_IMPLEMENT_INTERFACE(AWEATHER_TYPE_PLUGIN, aweather_ridge_plugin_init)); static void aweather_ridge_class_init(AWeatherRidgeClass *klass) { GObjectClass *object_class = (GObjectClass*)klass; } static void aweather_ridge_plugin_init(AWeatherPluginInterface *iface) { /* Add methods to the interface */ iface->expose = aweather_ridge_expose; } static void aweather_ridge_init(AWeatherRidge *ridge) { /* Set defaults */ ridge->gui = NULL; } /********************* * Overlay constants * *********************/ enum { LAYER_TOPO, LAYER_COUNTY, LAYER_RIVERS, LAYER_HIGHWAYS, LAYER_CITY, LAYER_COUNT }; typedef struct { gchar *name; gchar *fmt; gboolean enabled; float z; guint tex; } layer_t; static layer_t layers[] = { [LAYER_TOPO] = {"Topo", "Overlays/Topo/Short/%s_Topo_Short.jpg", TRUE, 1, 0}, [LAYER_COUNTY] = {"Counties", "Overlays/County/Short/%s_County_Short.gif", TRUE, 3, 0}, [LAYER_RIVERS] = {"Rivers", "Overlays/Rivers/Short/%s_Rivers_Short.gif", FALSE, 4, 0}, [LAYER_HIGHWAYS] = {"Highways", "Overlays/Highways/Short/%s_Highways_Short.gif", FALSE, 5, 0}, [LAYER_CITY] = {"Cities", "Overlays/Cities/Short/%s_City_Short.gif", TRUE, 6, 0}, }; /*********** * Helpers * ***********/ /* * Load an image into an OpenGL texture * \param filename Path to the image file * \return The OpenGL identifier for the texture */ void load_texture(AWeatherRidge *self, layer_t *layer, gchar *filename) { aweather_gui_gl_begin(self->gui); /* Load image */ GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(filename, NULL); if (!pixbuf) g_warning("Failed to load texture: %s", filename); guchar *pixels = gdk_pixbuf_get_pixels(pixbuf); int width = gdk_pixbuf_get_width(pixbuf); int height = gdk_pixbuf_get_height(pixbuf); int format = gdk_pixbuf_get_has_alpha(pixbuf) ? GL_RGBA : GL_RGB; /* Create Texture */ glDeleteTextures(1, &layer->tex); glGenTextures(1, &layer->tex); glBindTexture(GL_TEXTURE_2D, layer->tex); // 2d texture (x and y size) glPixelStorei(GL_UNPACK_ALIGNMENT, 1); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, format, GL_UNSIGNED_BYTE, pixels); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); char *base = g_path_get_basename(filename); g_message("loaded image: w=%-3d h=%-3d fmt=%x px=(%02x,%02x,%02x,%02x) img=%s", width, height, format, pixels[0], pixels[1], pixels[2], pixels[3], base); g_free(base); aweather_gui_gl_end(self->gui); g_object_unref(pixbuf); /* Redraw */ aweather_gui_gl_redraw(self->gui); } /***************** * ASync helpers * *****************/ typedef struct { AWeatherRidge *self; layer_t *layer; } cached_t; void cached_cb(gchar *filename, gboolean updated, gpointer _udata) { cached_t *udata = _udata; load_texture(udata->self, udata->layer, filename); g_free(udata); } /************* * callbacks * *************/ static void on_site_changed(AWeatherView *view, gchar *site, AWeatherRidge *self) { g_message("site changed to %s", site); for (int i = 0; i < LAYER_COUNT; i++) { gchar *base = "http://radar.weather.gov/ridge/"; gchar *path = g_strdup_printf(layers[i].fmt, site); cached_t *udata = g_malloc(sizeof(cached_t)); udata->self = self; udata->layer = &layers[i]; cache_file(base, path, AWEATHER_NEVER, cached_cb, udata); g_free(path); } } void toggle_layer(GtkToggleButton *check, AWeatherGui *gui) { layer_t *layer = g_object_get_data(G_OBJECT(check), "layer"); layer->enabled = gtk_toggle_button_get_active(check); aweather_gui_gl_redraw(gui); } /*********** * Methods * ***********/ AWeatherRidge *aweather_ridge_new(AWeatherGui *gui) { AWeatherRidge *ridge = g_object_new(AWEATHER_TYPE_RIDGE, NULL); ridge->gui = gui; AWeatherView *view = aweather_gui_get_view(gui); GtkWidget *drawing = aweather_gui_get_widget(gui, "drawing"); GtkWidget *config = aweather_gui_get_widget(gui, "tabs"); /* Add configuration tab */ GtkWidget *tab = gtk_label_new("Ridge"); GtkWidget *body = gtk_alignment_new(0.5, 0, 0, 0); GtkWidget *hbox = gtk_hbox_new(FALSE, 10); for (int i = 0; i < LAYER_COUNT; i++) { GtkWidget *check = gtk_check_button_new_with_label(layers[i].name); gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(check), layers[i].enabled); gtk_box_pack_start(GTK_BOX(hbox), check, FALSE, TRUE, 0); g_object_set_data(G_OBJECT(check), "layer", &layers[i]); g_signal_connect(check, "toggled", G_CALLBACK(toggle_layer), gui); } gtk_container_add(GTK_CONTAINER(body), hbox); gtk_notebook_append_page(GTK_NOTEBOOK(config), body, tab); g_signal_connect(view, "site-changed", G_CALLBACK(on_site_changed), ridge); return ridge; } static void aweather_ridge_expose(AWeatherPlugin *_ridge) { AWeatherRidge *ridge = AWEATHER_RIDGE(_ridge); g_message("ridge:expose"); glPushMatrix(); glEnable(GL_TEXTURE_2D); glColor4f(1,1,1,1); for (int i = 0; i < LAYER_COUNT; i++) { if (!layers[i].enabled) continue; glBindTexture(GL_TEXTURE_2D, layers[i].tex); glBegin(GL_POLYGON); glTexCoord2f(0.0, 0.0); glVertex3f(240*1000*-1.0, 282*1000* 1.0, layers[i].z); glTexCoord2f(0.0, 1.0); glVertex3f(240*1000*-1.0, 282*1000*-1.0, layers[i].z); glTexCoord2f(1.0, 1.0); glVertex3f(240*1000* 1.0, 282*1000*-1.0, layers[i].z); glTexCoord2f(1.0, 0.0); glVertex3f(240*1000* 1.0, 282*1000* 1.0, layers[i].z); glEnd(); } glPopMatrix(); }