#include <gtk/gtk.h>
#include <glib/gprintf.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <math.h>
+#include <gconf/gconf-client.h>
#include "ui.h"
#include "callbacks.h"
+#define GCONF_KEY "/apps/Maemo/speedometer/disclaimer"
+
+/* This is used when converting to other units
+ * number represents a multiplier which is used
+ * when converting the base unit to other units.
+ * Base unit is m/s thus the first multiplier is
+ * one. Units are in following order:
+ *
+ * m/s, km/h, mph, f/s, knot
+ */
+gdouble conversion[] = { 1, 3.6, 2.237, 3.281, 1.944 };
+guint unit = 1;
+#define UNIT_COUNT 5
+// TODO: wrap this mess up somewhere
+
+static GdkPixbuf* big_graphics[15];
+static GdkPixbuf* small_graphics[15];
+static GtkWidget* digits[5];
+static GtkWidget* unit_graphic;
+
#define IMAGE_PATH "/usr/share/speedometer/%d.png"
static void set_widget_bg_black(GtkWidget* widget) {
gtk_widget_modify_bg(GTK_WIDGET(widget), GTK_STATE_NORMAL, &black);
}
-void load_graphix(AppData *appdata) {
- g_assert(appdata);
- g_print("Loading images\n");
+
+/* Loads all the graphics from the disk and
+ * scales the images down to be used in several
+ * places. Might block for few seconds depending
+ * on the load.
+ */
+void load_graphics() {
+ g_print("Loading and scaling images\n");
guint i = 0;
- while(i < 10) {
+
+ /* This loop will load all the images from the disk
+ * and store the pixbufs to the array. Pixbufs are
+ * correct size to be used in the big digits.
+ */
+ while(i < 15) {
char* path = g_malloc(30);
g_sprintf(path, IMAGE_PATH, i);
- appdata->graphix[i] = gtk_image_new_from_file(path);
g_print(path);
g_print("\n");
+ GError* error = NULL;
+ big_graphics[i] = gdk_pixbuf_new_from_file_at_scale(path,
+ 160,
+ 160,
+ FALSE,
+ &error);
+ if(error) {
+ g_print("Error loading big graphics: %s\n", error->message);
+ g_error_free(error);
+ error = NULL;
+ }
+ small_graphics[i] = gdk_pixbuf_new_from_file_at_scale(path,
+ 120,
+ 120,
+ FALSE,
+ &error);
+ if(error) {
+ g_print("Error loading small graphics: %s\n", error->message);
+ g_error_free(error);
+ error = NULL;
+ }
g_free(path);
i++;
}
+ g_print("Done\n");
}
-void load_initial_pixbufs(AppData* appdata) {
- g_assert(appdata);
-
- GdkPixbuf* zero = gtk_image_get_pixbuf(GTK_IMAGE(appdata->graphix[0]));
-
- appdata->big_digits[0] = GTK_WIDGET(gtk_image_new_from_pixbuf(zero));
- appdata->big_digits[1] = GTK_WIDGET(gtk_image_new_from_pixbuf(zero));
- appdata->big_digits[2] = GTK_WIDGET(gtk_image_new_from_pixbuf(zero));
+void set_digits_to_zero() {
+ digits[0] = gtk_image_new_from_pixbuf(big_graphics[0]);
+ digits[1] = gtk_image_new_from_pixbuf(big_graphics[0]);
+ digits[2] = gtk_image_new_from_pixbuf(big_graphics[0]);
+ digits[3] = gtk_image_new_from_pixbuf(small_graphics[0]);
+ digits[4] = gtk_image_new_from_pixbuf(small_graphics[0]);
+ // TODO: load this from GConf
+ unit_graphic = gtk_image_new_from_pixbuf(small_graphics[11]);
}
-void set_nth_digit(AppData* appdata, guint n, guint value) {
- g_assert(appdata);
+static void set_nth_digit(guint n, guint value) {
g_assert(value < 10);
- g_assert(n < 3);
+ g_assert(n < 5);
- GtkWidget* image = appdata->big_digits[n];
- GdkPixbuf* buf = gtk_image_get_pixbuf(GTK_IMAGE(appdata->graphix[value]));
- gtk_image_set_from_pixbuf(GTK_IMAGE(image), buf);
+ if(n < 3) {
+ GtkWidget* image = digits[n];
+ GdkPixbuf* buf = big_graphics[value];
+ gtk_image_set_from_pixbuf(GTK_IMAGE(image), buf);
+ }
+ else {
+ GtkWidget* image = digits[n];
+ GdkPixbuf* buf = small_graphics[value];
+ gtk_image_set_from_pixbuf(GTK_IMAGE(image), buf);
+ }
}
-void repaint_all_digits(AppData* appdata) {
- g_assert(appdata);
- gtk_widget_queue_draw(GTK_WIDGET(appdata->big_digits[0]));
- gtk_widget_queue_draw(GTK_WIDGET(appdata->big_digits[1]));
- gtk_widget_queue_draw(GTK_WIDGET(appdata->big_digits[2]));
+static void repaint_all_digits() {
+ gtk_widget_queue_draw(GTK_WIDGET(digits[0]));
+ gtk_widget_queue_draw(GTK_WIDGET(digits[1]));
+ gtk_widget_queue_draw(GTK_WIDGET(digits[2]));
}
void create_ui(AppData* appdata) {
g_assert(appdata);
- appdata->unit = 1; // by default use km/h display
-
- GtkWidget *hbox;
+ GtkWidget *top_hbox;
+ GtkWidget *bottom_hbox;
GtkWidget *vbox;
vbox = gtk_vbox_new(FALSE, 0);
- hbox = gtk_hbox_new(TRUE, 0);
+ top_hbox = gtk_hbox_new(TRUE, 0);
+ bottom_hbox = gtk_hbox_new(TRUE, 0);
- GtkWidget* top_e = gtk_event_box_new();
- GtkWidget* bottom_e = gtk_event_box_new();
+ GtkWidget* event_box = gtk_event_box_new();
- g_signal_connect(G_OBJECT(top_e),
- "button_press_event",
- G_CALLBACK(top_event_box_button_press),
+ g_signal_connect(G_OBJECT(event_box),
+ "tap_and_hold",
+ G_CALLBACK(long_tap),
appdata);
+ gtk_widget_tap_and_hold_setup(event_box, NULL, NULL, 0);
- g_signal_connect(G_OBJECT(bottom_e),
+ g_signal_connect(G_OBJECT(event_box),
"button_press_event",
- G_CALLBACK(bottom_event_box_button_press),
+ G_CALLBACK(short_tap),
appdata);
g_signal_connect(G_OBJECT(appdata->window),
G_CALLBACK(gtk_main_quit),
NULL);
- g_signal_connect(G_OBJECT(appdata->window),
- "key_press_event",
- G_CALLBACK(key_press_cb),
- appdata->window);
+ g_signal_connect(G_OBJECT(appdata->window),
+ "key_press_event",
+ G_CALLBACK(key_press_cb),
+ appdata->window);
+
+ // add three big digits to the hbox
+ // creates the top row where big digits are placed
+ gtk_box_pack_start(GTK_BOX(top_hbox), GTK_WIDGET(digits[0]), FALSE, FALSE, 0);
+ gtk_box_pack_start(GTK_BOX(top_hbox), GTK_WIDGET(digits[1]), FALSE, FALSE, 0);
+ gtk_box_pack_start(GTK_BOX(top_hbox), GTK_WIDGET(digits[2]), FALSE, FALSE, 0);
+
+ // add small digits to another hbox
+ // creates the bottom row with decimals and unit graphic
+ gtk_box_pack_start(GTK_BOX(bottom_hbox), GTK_WIDGET(unit_graphic), FALSE, FALSE, 0);
+ gtk_box_pack_start(GTK_BOX(bottom_hbox), GTK_WIDGET(digits[3]), FALSE, FALSE, 0);
+ gtk_box_pack_start(GTK_BOX(bottom_hbox), GTK_WIDGET(digits[4]), FALSE, FALSE, 0);
- // add three digits to the hbox
- gtk_box_pack_start(GTK_BOX(hbox), GTK_WIDGET(appdata->big_digits[0]), FALSE, FALSE, 0);
- gtk_box_pack_start(GTK_BOX(hbox), GTK_WIDGET(appdata->big_digits[1]), FALSE, FALSE, 0);
- gtk_box_pack_start(GTK_BOX(hbox), GTK_WIDGET(appdata->big_digits[2]), FALSE, FALSE, 0);
+ // add event boxes to the vbox
+ gtk_box_pack_start_defaults(GTK_BOX(vbox), top_hbox);
+ gtk_box_pack_start_defaults(GTK_BOX(vbox), bottom_hbox);
- gtk_box_pack_start_defaults(GTK_BOX(vbox), top_e); // add event box on top
- gtk_box_pack_start_defaults(GTK_BOX(vbox), hbox); // numbers to the middle
- gtk_box_pack_start_defaults(GTK_BOX(vbox), bottom_e); // add event box on bottom
+ // add vertival box to the event box
+ gtk_container_add(GTK_CONTAINER(event_box), GTK_WIDGET(vbox));
- gtk_container_add(GTK_CONTAINER(appdata->window), GTK_WIDGET(vbox));
+ // finally add the event box with all the children to the window
+ gtk_container_add(GTK_CONTAINER(appdata->window), GTK_WIDGET(event_box));
// set backgrounds black
set_widget_bg_black(GTK_WIDGET(appdata->window));
- set_widget_bg_black(bottom_e);
- set_widget_bg_black(top_e);
+ set_widget_bg_black(event_box);
+
+ gtk_window_fullscreen(GTK_WINDOW(appdata->window));
+ gtk_widget_show_all(GTK_WIDGET(appdata->window));
+}
+
+void change_unit() {
+ unit++;
+ if(unit >= UNIT_COUNT) {
+ unit = 0;
+ }
+ g_print("Unit used in conversion: %f\n", conversion[unit]);
+
+ GdkPixbuf* buf = small_graphics[10 + unit];
+ gtk_image_set_from_pixbuf(GTK_IMAGE(unit_graphic), buf);
+}
+
+void interpret_and_set_speed(gdouble speed) {
+ g_assert(!isnan(speed));
+
+ /* speed is in m/s so let's convert
+ * it to the unit that we are using
+ */
+ speed *= conversion[unit];
+
+ /* we need to limit the speed down to
+ * less than 1000 whatever or else hell
+ * breaks loose in the form of assert
+ */
+ if(!(fabs(speed) < 1000)) {
+ g_print("Ahem, may I suggest to limit the speed (%f) a bit, Sir.\n", speed);
+ speed = 0;
+ }
+
+ /* Convert float to a 6 digits (including dot) wide
+ * string with leading zeros. After conversion
+ * the speed looks like:
+ *
+ * 009.20 (9,20 km/h) or
+ * 010.90 (10,90 km/h) or
+ * 120.10 (120,10 km/h)
+ *
+ * Now, regardless of speed we know the position
+ * of the digits and can access the array directly.
+ */
+ gchar* charspeed = g_malloc(10); // alloc
+ g_sprintf(charspeed, "%0*.2f", 6, speed);
+
+ g_print("Speed is %s km/h\n", charspeed);
+
+ // these three lines will set the big digits
+ set_nth_digit(0, g_ascii_digit_value(charspeed[0]));
+ set_nth_digit(1, g_ascii_digit_value(charspeed[1]));
+ set_nth_digit(2, g_ascii_digit_value(charspeed[2]));
+
+ // these two lines will set the small digits
+ set_nth_digit(3, g_ascii_digit_value(charspeed[4]));
+ set_nth_digit(4, g_ascii_digit_value(charspeed[5]));
+
+ repaint_all_digits();
+
+ g_free(charspeed);
+}
+
+static void show_dialog() {
+ GtkWidget *dialog = gtk_message_dialog_new(
+ NULL,
+ GTK_DIALOG_MODAL,
+ GTK_MESSAGE_INFO,
+ GTK_BUTTONS_OK,
+ "This program is licensed under GNU General Public License, "
+ "which means (among other things) that you don't have to pay "
+ "a dime for it. "
+ "PS. Long-tapping on the screen will quit the program.");
+ gtk_dialog_run(GTK_DIALOG(dialog));
+ gtk_widget_destroy(dialog);
+}
+
+void show_cardware_dialog() {
+ GConfClient* client = gconf_client_get_default();
+ g_assert(GCONF_IS_CLIENT(client));
+
+ GConfValue* gcvalue = NULL;
+ gcvalue = gconf_client_get_without_default(client, GCONF_KEY, NULL);
+
+ if(gcvalue == NULL) {
+ g_print("GConf key not found so show dialog.\n");
+ show_dialog();
+ gconf_client_set_bool(client, GCONF_KEY, TRUE, NULL);
+ }
+ g_object_unref(client);
}
projects / speedometer / blobdiff