git.maemo.org Git - speedometer/blob - ui.c

   1 /****
   2         Speedometer, shows your current speed using GPS
   3         Copyright (C) 2008 Wellu Mäkinen <wellu@wellu.org>
   4
   5         This program is free software: you can redistribute it and/or modify
   6         it under the terms of the GNU General Public License as published by
   7         the Free Software Foundation, either version 3 of the License, or
   8         (at your option) any later version.
   9
  10         This program is distributed in the hope that it will be useful,
  11         but WITHOUT ANY WARRANTY; without even the implied warranty of
  12         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13         GNU General Public License for more details.
  14
  15         You should have received a copy of the GNU General Public License
  16         along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  ****/
  18
  19 #include <gtk/gtk.h>
  20 #include <glib/gprintf.h>
  21
  22 #include "ui.h"
  23 #include "callbacks.h"
  24
  25 static GtkWidget* graphix[10];          // contains all the graphics
  26 static GtkWidget* big_digits[3];        // big digits that are shown as speed
  27 static GtkWidget* small_digits[2];      // small digits that are shown on the screen
  28
  29 #define IMAGE_PATH "/usr/share/speedometer/%d.png"
  30
  31 static void set_widget_bg_black(GtkWidget* widget) {
  32         g_assert(widget);
  33         GdkColor black;
  34         black.red = 0x0000;
  35         black.blue = 0x0000;
  36         black.green = 0x0000;
  37         gtk_widget_modify_bg(GTK_WIDGET(widget), GTK_STATE_NORMAL, &black);
  38 }
  39
  40 void load_graphix(AppData *appdata) {
  41         g_assert(appdata);
  42         g_print("Loading images\n");
  43         guint i = 0;
  44         while(i < 10) {
  45                 char* path = g_malloc(30);
  46                 g_sprintf(path, IMAGE_PATH, i);
  47                 graphix[i] = gtk_image_new_from_file(path);
  48                 g_print(path);
  49                 g_print("\n");
  50                 g_free(path);
  51                 i++;
  52         }
  53 }
  54
  55 void set_digits_to_zero(AppData* appdata) {
  56         g_assert(appdata);
  57
  58         GdkPixbuf* zero = gtk_image_get_pixbuf(GTK_IMAGE(graphix[0]));
  59
  60         big_digits[0] = GTK_WIDGET(gtk_image_new_from_pixbuf(zero));
  61         big_digits[1] = GTK_WIDGET(gtk_image_new_from_pixbuf(zero));
  62         big_digits[2] = GTK_WIDGET(gtk_image_new_from_pixbuf(zero));
  63 }
  64
  65 void set_nth_digit(AppData* appdata, guint n, guint value) {
  66
  67         g_assert(value < 10);
  68         g_assert(n < 3);
  69
  70         GtkWidget* image = big_digits[n];
  71         GdkPixbuf* buf = gtk_image_get_pixbuf(GTK_IMAGE(graphix[value]));
  72         gtk_image_set_from_pixbuf(GTK_IMAGE(image), buf);
  73 }
  74
  75 void repaint_all_digits(AppData* appdata) {
  76
  77         gtk_widget_queue_draw(GTK_WIDGET(big_digits[0]));
  78         gtk_widget_queue_draw(GTK_WIDGET(big_digits[1]));
  79         gtk_widget_queue_draw(GTK_WIDGET(big_digits[2]));
  80 }
  81
  82 void create_ui(AppData* appdata) {
  83         g_assert(appdata);
  84
  85         appdata->unit = 1; // by default use km/h display
  86
  87         GtkWidget *hbox;
  88         GtkWidget *vbox;
  89
  90         vbox = gtk_vbox_new(FALSE, 0);
  91         hbox = gtk_hbox_new(TRUE, 0);
  92
  93         GtkWidget* top_e = gtk_event_box_new();
  94         GtkWidget* bottom_e = gtk_event_box_new();
  95
  96         g_signal_connect(G_OBJECT(top_e),
  97                         "button_press_event",
  98                         G_CALLBACK(top_event_box_button_press),
  99                         appdata);
 100
 101         g_signal_connect(G_OBJECT(bottom_e),
 102                         "button_press_event",
 103                         G_CALLBACK(bottom_event_box_button_press),
 104                         appdata);
 105
 106         g_signal_connect(G_OBJECT(appdata->window),
 107                         "delete_event",
 108                         G_CALLBACK(gtk_main_quit),
 109                         NULL);
 110
 111     g_signal_connect(G_OBJECT(appdata->window),
 112                 "key_press_event",
 113                 G_CALLBACK(key_press_cb),
 114                 appdata->window);
 115
 116         // add three digits to the hbox
 117         gtk_box_pack_start(GTK_BOX(hbox), GTK_WIDGET(big_digits[0]), FALSE, FALSE, 0);
 118         gtk_box_pack_start(GTK_BOX(hbox), GTK_WIDGET(big_digits[1]), FALSE, FALSE, 0);
 119         gtk_box_pack_start(GTK_BOX(hbox), GTK_WIDGET(big_digits[2]), FALSE, FALSE, 0);
 120
 121         gtk_box_pack_start_defaults(GTK_BOX(vbox), top_e); // add event box on top
 122         gtk_box_pack_start_defaults(GTK_BOX(vbox), hbox); // numbers to the middle
 123         gtk_box_pack_start_defaults(GTK_BOX(vbox), bottom_e); // add event box on bottom
 124
 125         gtk_container_add(GTK_CONTAINER(appdata->window), GTK_WIDGET(vbox));
 126
 127         // set backgrounds black
 128         set_widget_bg_black(GTK_WIDGET(appdata->window));
 129         set_widget_bg_black(bottom_e);
 130         set_widget_bg_black(top_e);
 131
 132         gtk_window_fullscreen(GTK_WINDOW(appdata->window));
 133         gtk_widget_show_all(GTK_WIDGET(appdata->window));
 134 }
 135