forked from AuroraMiddleware/gtk
113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
/* Color Chooser
|
|
*
|
|
* A GtkColorChooser lets the user choose a color. There are several
|
|
* implementations of the GtkColorChooser interface in GTK+. The
|
|
* GtkColorChooserDialog is a prebuilt dialog containing a
|
|
* GtkColorChooserWidget.
|
|
*/
|
|
|
|
#include <gtk/gtk.h>
|
|
|
|
static GtkWidget *window = NULL;
|
|
static GtkWidget *da;
|
|
static GdkRGBA color;
|
|
static GtkWidget *frame;
|
|
|
|
/* draw callback for the drawing area
|
|
*/
|
|
static void
|
|
draw_function (GtkDrawingArea *da,
|
|
cairo_t *cr,
|
|
int width,
|
|
int height,
|
|
gpointer data)
|
|
{
|
|
gdk_cairo_set_source_rgba (cr, &color);
|
|
cairo_paint (cr);
|
|
}
|
|
|
|
static void
|
|
response_cb (GtkDialog *dialog,
|
|
gint response_id,
|
|
gpointer user_data)
|
|
{
|
|
if (response_id == GTK_RESPONSE_OK)
|
|
gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (dialog), &color);
|
|
|
|
gtk_widget_destroy (GTK_WIDGET (dialog));
|
|
}
|
|
|
|
static void
|
|
change_color_callback (GtkWidget *button,
|
|
gpointer data)
|
|
{
|
|
GtkWidget *dialog;
|
|
|
|
dialog = gtk_color_chooser_dialog_new ("Changing color", GTK_WINDOW (window));
|
|
gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
|
|
gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (dialog), &color);
|
|
|
|
g_signal_connect (dialog, "response",
|
|
G_CALLBACK (response_cb), NULL);
|
|
|
|
gtk_widget_show_all (dialog);
|
|
}
|
|
|
|
GtkWidget *
|
|
do_colorsel (GtkWidget *do_widget)
|
|
{
|
|
GtkWidget *vbox;
|
|
GtkWidget *button;
|
|
|
|
if (!window)
|
|
{
|
|
color.red = 0;
|
|
color.blue = 1;
|
|
color.green = 0;
|
|
color.alpha = 1;
|
|
|
|
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
|
|
gtk_window_set_screen (GTK_WINDOW (window),
|
|
gtk_widget_get_screen (do_widget));
|
|
gtk_window_set_title (GTK_WINDOW (window), "Color Chooser");
|
|
|
|
g_signal_connect (window, "destroy",
|
|
G_CALLBACK (gtk_widget_destroyed), &window);
|
|
|
|
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8);
|
|
g_object_set (vbox, "margin", 12, NULL);
|
|
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);
|
|
|
|
da = gtk_drawing_area_new ();
|
|
gtk_drawing_area_set_content_width (GTK_DRAWING_AREA (da), 200);
|
|
gtk_drawing_area_set_content_height (GTK_DRAWING_AREA (da), 200);
|
|
gtk_drawing_area_set_draw_func (GTK_DRAWING_AREA (da), draw_function, NULL, NULL);
|
|
|
|
gtk_container_add (GTK_CONTAINER (frame), da);
|
|
|
|
button = gtk_button_new_with_mnemonic ("_Change the above color");
|
|
gtk_widget_set_halign (button, GTK_ALIGN_END);
|
|
gtk_widget_set_valign (button, GTK_ALIGN_CENTER);
|
|
|
|
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE);
|
|
|
|
g_signal_connect (button, "clicked",
|
|
G_CALLBACK (change_color_callback), NULL);
|
|
}
|
|
|
|
if (!gtk_widget_get_visible (window))
|
|
gtk_widget_show_all (window);
|
|
else
|
|
gtk_widget_destroy (window);
|
|
|
|
return window;
|
|
}
|