/***********************************************************
 *
 *   main.c - testing CustomCellRendererProgress
 *
 *   part of the Gtk+ tree view tutorial
 *
 *   by Tim-Philipp Mueller < tim at centricular dot net >
 *
 ***********************************************************/

#include "custom-cell-renderer-progressbar.h"

static GtkListStore        *liststore;

static gboolean             increasing = TRUE;   /* direction of progress bar change */

enum
{
  COL_PERCENTAGE = 0,
  COL_TEXT,
  NUM_COLS
};

#define STEP  0.01

gboolean
increase_progress_timeout (GtkCellRenderer *renderer)
{
  GtkTreeIter  iter;
  gfloat       perc = 0.0;
  gchar        buf[20];

  gtk_tree_model_get_iter_first(GTK_TREE_MODEL(liststore), &iter); /* first and only row */

  gtk_tree_model_get (GTK_TREE_MODEL(liststore), &iter, COL_PERCENTAGE, &perc, -1);

  if ( perc > (1.0-STEP)  ||  (perc < STEP && perc > 0.0) )
  {
    increasing = (!increasing);
  }

  if (increasing)
    perc = perc + STEP;
  else
    perc = perc - STEP;

  g_snprintf(buf, sizeof(buf), "%u %%", (guint)(perc*100));

  gtk_list_store_set (liststore, &iter, COL_PERCENTAGE, perc, COL_TEXT, buf, -1);

  return TRUE; /* Call again */
}


GtkWidget *
create_view_and_model (void)
{
  GtkTreeViewColumn   *col;
  GtkCellRenderer     *renderer;
  GtkTreeIter          iter;
  GtkWidget           *view;

  liststore = gtk_list_store_new(NUM_COLS, G_TYPE_FLOAT, G_TYPE_STRING);
  gtk_list_store_append(liststore, &iter);
  gtk_list_store_set (liststore, &iter, COL_PERCENTAGE, 0.5, -1); /* start at 50% */

  view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(liststore));

  g_object_unref(liststore); /* destroy store automatically with view */

  renderer = gtk_cell_renderer_text_new();
  col = gtk_tree_view_column_new();
  gtk_tree_view_column_pack_start (col, renderer, TRUE);
  gtk_tree_view_column_add_attribute (col, renderer, "text", COL_TEXT);
  gtk_tree_view_column_set_title (col, "Progress");
  gtk_tree_view_append_column(GTK_TREE_VIEW(view),col);

  renderer = custom_cell_renderer_progress_new();
  col = gtk_tree_view_column_new();
  gtk_tree_view_column_pack_start (col, renderer, TRUE);
  gtk_tree_view_column_add_attribute (col, renderer, "percentage", COL_PERCENTAGE);
  gtk_tree_view_column_set_title (col, "Progress");
  gtk_tree_view_append_column(GTK_TREE_VIEW(view),col);

  g_timeout_add(50, (GSourceFunc) increase_progress_timeout, NULL);

  return view;
}


int
main (int argc, char **argv)
{
  GtkWidget *window, *view;

  gtk_init(&argc,&argv);

  window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
  gtk_window_set_default_size (GTK_WINDOW(window), 150, 100);
  g_signal_connect(window, "delete_event", gtk_main_quit, NULL);

  view = create_view_and_model();

  gtk_container_add(GTK_CONTAINER(window), view);

  gtk_widget_show_all(window);

  gtk_main();

  return 0;
}