-/* Color Selector
- *
- * GtkColorSelection lets the user choose a color. GtkColorSelectionDialog is
- * a prebuilt dialog containing a GtkColorSelection.
+/* 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 GdkColor color;
+static GdkRGBA color;
static GtkWidget *frame;
-/* Expose callback for the drawing area
+/* draw callback for the drawing area
*/
static gboolean
-draw_callback (GtkWidget *widget,
+draw_callback (GtkWidget *widget,
cairo_t *cr,
gpointer data)
{
- GtkStyle *style;
-
- style = gtk_widget_get_style (widget);
+ GtkStyleContext *context;
+ GdkRGBA rgba;
- gdk_cairo_set_source_color (cr, &style->bg[GTK_STATE_NORMAL]);
+ context = gtk_widget_get_style_context (widget);
+ gtk_style_context_get_background_color (context, GTK_STATE_FLAG_NORMAL, &rgba);
+ gdk_cairo_set_source_rgba (cr, &rgba);
cairo_paint (cr);
return TRUE;
}
+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_override_background_color (da, 0, &color);
+ }
+
+ gtk_widget_hide (GTK_WIDGET (dialog));
+}
+
static void
change_color_callback (GtkWidget *button,
- gpointer data)
+ gpointer data)
{
GtkWidget *dialog;
- GtkColorSelection *colorsel;
- GtkColorSelectionDialog *selection_dialog;
- gint response;
-
- dialog = gtk_color_selection_dialog_new ("Changing color");
-
- gtk_window_set_transient_for (GTK_WINDOW (dialog), GTK_WINDOW (window));
- selection_dialog = GTK_COLOR_SELECTION_DIALOG (dialog);
- colorsel = GTK_COLOR_SELECTION (gtk_color_selection_dialog_get_color_selection (selection_dialog));
+ dialog = gtk_color_chooser_dialog_new ("Changing color", GTK_WINDOW (window));
+ gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (dialog), &color);
- 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));
+ g_signal_connect (dialog,
+ "response",
+ G_CALLBACK (response_cb),
+ NULL);
- 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);
+ gtk_widget_show_all (dialog);
}
GtkWidget *
{
GtkWidget *vbox;
GtkWidget *button;
- GtkWidget *alignment;
-
+
if (!window)
{
color.red = 0;
- color.blue = 65535;
+ 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 Selection");
+ 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);
+ G_CALLBACK (gtk_widget_destroyed), &window);
gtk_container_set_border_width (GTK_CONTAINER (window), 8);
/*
* 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 ();
- g_signal_connect (da, "draw",
- G_CALLBACK (draw_callback), NULL);
+ g_signal_connect (da, "draw", G_CALLBACK (draw_callback), NULL);
/* 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_widget_override_background_color (da, 0, &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);
-
+ 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, 0);
+
g_signal_connect (button, "clicked",
- G_CALLBACK (change_color_callback), NULL);
+ G_CALLBACK (change_color_callback), NULL);
}
if (!gtk_widget_get_visible (window))