132 lines
3.4 KiB
C#
132 lines
3.4 KiB
C#
//
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// TestColorSelection.cs
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//
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// Author: Duncan Mak (duncan@ximian.com)
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//
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// Copyright (C) 2002, Duncan Mak, Ximian Inc.
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//
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using System;
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using System.Text;
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using Gtk;
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namespace WidgetViewer {
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public class TestColorSelection
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{
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static ColorSelectionDialog window = null;
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static Dialog dialog = null;
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public static Gtk.Window Create ()
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{
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HBox options = new HBox (false, 0);
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CheckButton check_button = null;
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window = new ColorSelectionDialog ("Color selection dialog");
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window.ColorSelection.HasOpacityControl = true;
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window.ColorSelection.HasPalette = true;
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window.SetDefaultSize (250, 200);
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window.ContentArea.PackStart (options, false, false, 0);
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window.ContentArea.BorderWidth = 10;
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check_button = new CheckButton("Show Opacity");
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check_button.Active = true;
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options.PackStart (check_button, false, false, 0);
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check_button.Toggled += new EventHandler (Opacity_Callback);
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check_button = new CheckButton("Show Palette");
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check_button.Active = true;
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options.PackEnd (check_button, false, false, 0);
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check_button.Toggled += new EventHandler (Palette_Callback);
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window.ColorSelection.ColorChanged += new EventHandler (Color_Changed);
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window.OkButton.Clicked += new EventHandler (Color_Selection_OK);
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window.CancelButton.Clicked += new EventHandler (Color_Selection_Cancel);
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options.ShowAll ();
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return window;
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}
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static void Opacity_Callback (object o, EventArgs args)
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{
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window.ColorSelection.HasOpacityControl = ((ToggleButton )o).Active;
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}
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static void Palette_Callback (object o, EventArgs args)
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{
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window.ColorSelection.HasPalette = ((ToggleButton )o).Active;
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}
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static string HexFormat (Gdk.RGBA color)
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{
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StringBuilder s = new StringBuilder ();
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double[] vals = { color.Red, color.Green, color.Blue };
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char[] hexchars = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
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'A', 'B', 'C', 'D', 'E', 'F'};
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s.Append ('#');
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foreach (double val in vals) {
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/* Convert to a range of 0-255, then lookup the
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* digit for each half-byte */
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byte rounded = (byte) (val * 255);
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s.Append (hexchars[(rounded & 0xf0) >> 4]);
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s.Append (hexchars[rounded & 0x0f]);
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}
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return s.ToString ();
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}
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static void Color_Changed (object o, EventArgs args)
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{
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Gdk.RGBA color = window.ColorSelection.CurrentRgba;
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Console.WriteLine (HexFormat (color));
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}
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static void Color_Selection_OK (object o, EventArgs args)
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{
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Gdk.RGBA selected = window.ColorSelection.CurrentRgba;
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window.Hide ();
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Display_Result (selected);
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}
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static void Color_Selection_Cancel (object o, EventArgs args)
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{
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window.Destroy ();
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}
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static void Dialog_Ok (object o, EventArgs args)
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{
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dialog.Destroy ();
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window.ShowAll ();
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}
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static void Display_Result (Gdk.RGBA color)
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{
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dialog = new Dialog ();
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dialog.Title = "Selected Color: " + HexFormat (color);
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DrawingArea da = new DrawingArea ();
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da.OverrideBackgroundColor (StateFlags.Normal, color);
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dialog.ContentArea.BorderWidth = 10;
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dialog.ContentArea.PackStart (da, true, true, 10);
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dialog.SetDefaultSize (200, 200);
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Button button = new Button (Stock.Ok);
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button.Clicked += new EventHandler (Dialog_Ok);
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button.CanDefault = true;
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dialog.ActionArea.PackStart (button, true, true, 0);
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button.GrabDefault ();
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dialog.ShowAll ();
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}
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static void Close_Button (object o, EventArgs args)
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{
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Color_Selection_Cancel (o, args);
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}
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}
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}
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