gtk/demos/gtk-demo/colorsel.c
Owen Taylor 58b5405bd2 at Oct 20 19:38:16 2001 Owen Taylor <otaylor@redhat.com>
* demos/*.c demos/gdk-pixbuf/*.c: Eliminate gtk_signal_*
        in favor of g_signal_*, gtk_object_* in favor of
        g_object_*.
2001-10-20 23:39:32 +00:00

111 lines
2.8 KiB
C

/* Color Selector
*
* GtkColorSelection lets the user choose a color. GtkColorSelectionDialog is
* a prebuilt dialog containing a GtkColorSelection.
*
*/
#include <gtk/gtk.h>
static GtkWidget *window = NULL;
static GtkWidget *da;
static GdkColor color;
static GtkWidget *frame;
static void
change_color_callback (GtkWidget *button,
gpointer data)
{
GtkWidget *dialog;
GtkColorSelection *colorsel;
gint response;
dialog = gtk_color_selection_dialog_new ("Changing color");
gtk_window_set_transient_for (GTK_WINDOW (dialog), GTK_WINDOW (window));
colorsel = GTK_COLOR_SELECTION (GTK_COLOR_SELECTION_DIALOG (dialog)->colorsel);
gtk_color_selection_set_previous_color (colorsel, &color);
gtk_color_selection_set_current_color (colorsel, &color);
gtk_color_selection_set_has_palette (colorsel, TRUE);
response = gtk_dialog_run (GTK_DIALOG (dialog));
if (response == GTK_RESPONSE_OK)
{
gtk_color_selection_get_current_color (colorsel,
&color);
gtk_widget_modify_bg (da, GTK_STATE_NORMAL, &color);
}
gtk_widget_destroy (dialog);
}
GtkWidget *
do_colorsel (void)
{
GtkWidget *vbox;
GtkWidget *button;
GtkWidget *alignment;
if (!window)
{
color.red = 0;
color.blue = 65535;
color.green = 0;
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window), "Color Selection");
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_widget_destroyed), &window);
gtk_container_set_border_width (GTK_CONTAINER (window), 8);
vbox = gtk_vbox_new (FALSE, 8);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 8);
gtk_container_add (GTK_CONTAINER (window), vbox);
/*
* Create the color swatch area
*/
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (vbox), frame, TRUE, TRUE, 0);
da = gtk_drawing_area_new ();
/* set a minimum size */
gtk_widget_set_size_request (da, 200, 200);
/* set the color */
gtk_widget_modify_bg (da, GTK_STATE_NORMAL, &color);
gtk_container_add (GTK_CONTAINER (frame), da);
alignment = gtk_alignment_new (1.0, 0.5, 0.0, 0.0);
button = gtk_button_new_with_mnemonic ("_Change the above color");
gtk_container_add (GTK_CONTAINER (alignment), button);
gtk_box_pack_start (GTK_BOX (vbox), alignment, FALSE, FALSE, 0);
g_signal_connect (button, "clicked",
G_CALLBACK (change_color_callback), NULL);
}
if (!GTK_WIDGET_VISIBLE (window))
{
gtk_widget_show_all (window);
}
else
{
gtk_widget_destroy (window);
window = NULL;
}
return window;
}