int
main (int argc, char *argv[])
{
App *app;
app = (App *) g_new (App, 1);
gtk_init (&argc, &argv);
app_init (app);
GET_UI_ELEMENT (GtkWidget, mainwindow);
GET_UI_ELEMENT (GtkWidget, layout1);
g_signal_connect (G_OBJECT (layout1), "draw",
G_CALLBACK (layout_draw_cb), app);
make_button ("eventbox1", app);
make_button ("eventbox2", app);
gtk_widget_show_all (mainwindow);
gtk_main ();
return 0;
}
void
app_init (App * app)
{
GError *err = NULL;
app->definitions = gtk_builder_new ();
gtk_builder_add_from_file (app->definitions,
UI_DEFINITIONS_FILE, &err);
if (err != NULL) {
g_printerr
("Error while loading app definitions file: %s\n",
err->message);
g_error_free (err);
gtk_main_quit ();
}
gtk_builder_connect_signals (app->definitions, app);
app_init_colors (app);
app->filename = NULL;
app->display_level = FALSE;
app->display_weight = FALSE;
GtkCellRenderer *renderer=gtk_cell_renderer_text_new();
GET_UI_ELEMENT(GtkComboBox, combobox_from);
gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(combobox_from),renderer,FALSE);
gtk_cell_layout_set_attributes(GTK_CELL_LAYOUT(combobox_from),renderer,
"text",0,
NULL);
gtk_combo_box_set_active(GTK_COMBO_BOX(combobox_from),0);
GET_UI_ELEMENT(GtkComboBox, combobox_to);
gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(combobox_to),renderer,FALSE);
gtk_cell_layout_set_attributes(GTK_CELL_LAYOUT(combobox_to),renderer,
"text",0,
NULL);
gtk_combo_box_set_active(GTK_COMBO_BOX(combobox_to),0);
//init non graphical units
app->p_graph = malloc(sizeof(graph));
app->p_matrix = malloc(sizeof(matrix));
app->p_matrix->i_size = 3;
matrix_malloc(app->p_matrix);
matrix_zero(app->p_matrix);
//construct the graph from the matrix
init_all(app->p_graph, app->p_matrix);
}
static gboolean
motion_notify_event (GtkWidget * widget,
GdkEventMotion * event, App * app)
{
gint x, y;
gboolean ret;
GtkAdjustment *hadjustment, *vadjustment;
gfloat hval, vval;
GET_UI_ELEMENT (GtkWidget, scrolledwindow2);
GET_UI_ELEMENT (GtkWidget, layout1);
gtk_widget_translate_coordinates (widget, layout1,
event->x, event->y, &x,
&y);
x -= offsetx;
y -= offsety;
// make sure the potential coordinates x,y:
// 1) will not push any part of the widget outside of its parent container
// 2) is a multiple of Sensitivity
x = RoundToNearestMultiple (Max (Min (x, maxx), 0),
Sensitivity);
y = RoundToNearestMultiple (Max (Min (y, maxy), 0),
Sensitivity);
if (x != px || y != py) {
g_object_get (scrolledwindow2, "hadjustment",
&hadjustment, "vadjustment",
&vadjustment, NULL);
hval = gtk_adjustment_get_value (hadjustment);
vval = gtk_adjustment_get_value (vadjustment);
x += hval;
y += vval;
px = x;
py = y;
gtk_layout_move (GTK_LAYOUT (layout1), widget, x, y);
}
gtk_widget_queue_draw (layout1);
return TRUE;
}
void
app_init_colors (App * app)
{
app->background_color = g_new0 (GdkRGBA, 1);
app->strokes_color = g_new0 (GdkRGBA, 1);
//fetch system colors
GET_UI_ELEMENT (GtkWidget, window1);
GtkStyleContext *context;
context = gtk_widget_get_style_context (window1);
gtk_style_context_get_background_color(context,
GTK_STATE_FLAG_NORMAL,
app->background_color);
gtk_style_context_get_color(context,
GTK_STATE_FLAG_NORMAL,
app->strokes_color);
}
