gtk/demos/gtk-demo/pickers.c

/* Pickers
 * #Keywords: GtkColorChooser, GtkFontChooser, GtkApplicationChooser
 *
 * These widgets are mainly intended for use in preference dialogs.
 * They allow to select colors, fonts and applications.
 *
 * This demo shows both the default appearance for these dialogs,
 * as well as some of the customizations that are possible.
 */

#include <gtk/gtk.h>

static gboolean
filter_font_cb (const PangoFontFamily *family,
                const PangoFontFace   *face,
                gpointer               data)
{
  const char *alias_families[] = {
    "Cursive",
    "Fantasy",
    "Monospace",
    "Sans",
    "Serif",
    "System-ui",
    NULL
  };
  const char *family_name;

  family_name = pango_font_family_get_name (PANGO_FONT_FAMILY (family));

  return g_strv_contains (alias_families, family_name);
}

#define COLOR(r,g,b) { r/255., g/255., b/255., 1.0 }

GtkWidget *
do_pickers (GtkWidget *do_widget)
{
  static GtkWidget *window = NULL;
  GtkWidget *table, *label, *picker;
  GdkRGBA solarized[] = {
    COLOR (0xff, 0xff, 0xff),
    COLOR (0x07, 0x36, 0x42),
    COLOR (0xdc, 0x32, 0x2f),
    COLOR (0x85, 0x99, 0x00),
    COLOR (0xb5, 0x89, 0x00),
    COLOR (0x26, 0x8b, 0xd2),
    COLOR (0xd3, 0x36, 0x82),
    COLOR (0x2a, 0xa1, 0x98),
    COLOR (0xee, 0xe8, 0xd5),

    COLOR (0x00, 0x00, 0x00),
    COLOR (0x00, 0x2b, 0x36),
    COLOR (0xcb, 0x4b, 0x16),
    COLOR (0x58, 0x6e, 0x75),
    COLOR (0x65, 0x7b, 0x83),
    COLOR (0x83, 0x94, 0x96),
    COLOR (0x6c, 0x71, 0xc4),
    COLOR (0x93, 0xa1, 0xa1),
    COLOR (0xfd, 0xf6, 0xe3),
  };

  if (!window)
  {
    window = gtk_window_new ();
    gtk_window_set_display (GTK_WINDOW (window),
                            gtk_widget_get_display (do_widget));
    gtk_window_set_title (GTK_WINDOW (window), "Pickers");
    g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);

    table = gtk_grid_new ();
    gtk_widget_set_margin_start (table, 20);
    gtk_widget_set_margin_end (table, 20);
    gtk_widget_set_margin_top (table, 20);
    gtk_widget_set_margin_bottom (table, 20);
    gtk_grid_set_row_spacing (GTK_GRID (table), 3);
    gtk_grid_set_column_spacing (GTK_GRID (table), 10);
    gtk_window_set_child (GTK_WINDOW (window), table);

    label = gtk_label_new ("Standard");
    gtk_widget_add_css_class (label, "title-4");
    gtk_grid_attach (GTK_GRID (table), label, 1, -1, 1, 1);
    label = gtk_label_new ("Custom");
    gtk_widget_add_css_class (label, "title-4");
    gtk_grid_attach (GTK_GRID (table), label, 2, -1, 1, 1);

    label = gtk_label_new ("Color:");
    gtk_widget_set_halign (label, GTK_ALIGN_START);
    gtk_widget_set_valign (label, GTK_ALIGN_CENTER);
    gtk_widget_set_hexpand (label, TRUE);
    gtk_grid_attach (GTK_GRID (table), label, 0, 0, 1, 1);

    picker = gtk_color_button_new ();
    gtk_grid_attach (GTK_GRID (table), picker, 1, 0, 1, 1);

    picker = gtk_color_button_new ();
    gtk_color_button_set_title (GTK_COLOR_BUTTON (picker), "Solarized colors");
    gtk_color_chooser_add_palette (GTK_COLOR_CHOOSER (picker),
                                   GTK_ORIENTATION_HORIZONTAL,
                                   9,
                                   18,
                                   solarized);
    gtk_grid_attach (GTK_GRID (table), picker, 2, 0, 1, 1);

    label = gtk_label_new ("Font:");
    gtk_widget_set_halign (label, GTK_ALIGN_START);
    gtk_widget_set_valign (label, GTK_ALIGN_CENTER);
    gtk_widget_set_hexpand (label, TRUE);
    gtk_grid_attach (GTK_GRID (table), label, 0, 1, 1, 1);

    picker = gtk_font_button_new ();
    gtk_grid_attach (GTK_GRID (table), picker, 1, 1, 1, 1);

    picker = gtk_font_button_new ();
    gtk_font_chooser_set_level (GTK_FONT_CHOOSER (picker),
                                GTK_FONT_CHOOSER_LEVEL_FAMILY |
                                GTK_FONT_CHOOSER_LEVEL_SIZE);
    gtk_font_chooser_set_filter_func (GTK_FONT_CHOOSER (picker), filter_font_cb, NULL, NULL);

    gtk_grid_attach (GTK_GRID (table), picker, 2, 1, 1, 1);

    label = gtk_label_new ("Mail:");
    gtk_widget_set_halign (label, GTK_ALIGN_START);
    gtk_widget_set_valign (label, GTK_ALIGN_CENTER);
    gtk_widget_set_hexpand (label, TRUE);
    picker = gtk_app_chooser_button_new ("x-scheme-handler/mailto");
    gtk_app_chooser_button_set_show_dialog_item (GTK_APP_CHOOSER_BUTTON (picker), TRUE);
    gtk_grid_attach (GTK_GRID (table), label, 0, 3, 1, 1);
    gtk_grid_attach (GTK_GRID (table), picker, 1, 3, 1, 1);
  }

  if (!gtk_widget_get_visible (window))
    gtk_widget_show (window);
  else
    gtk_window_destroy (GTK_WINDOW (window));

  return window;
}