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https://github.com/Ryujinx/GtkSharp.git
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99 lines
2.6 KiB
C#
99 lines
2.6 KiB
C#
//
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// DemoColorSelection.cs, port of colorsel.c from gtk-demo
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//
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// Author: Daniel Kornhauser <dkor@alum.mit.edu>
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//
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// Copyright (C) 2003, Ximian Inc.
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/* Color Selector
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*
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* GtkColorSelection lets the user choose a color. GtkColorSelectionDialog is
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* a prebuilt dialog containing a GtkColorSelection.
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*
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*/
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using System;
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using Gdk;
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using Gtk;
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namespace GtkDemo
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{
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[Demo ("Color Selection", "DemoColorSelection.cs")]
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public class DemoColorSelection : Gtk.Window
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{
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private Gdk.Color color;
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private Gtk.DrawingArea drawingArea;
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public DemoColorSelection () : base ("Color Selection")
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{
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this.DeleteEvent += new DeleteEventHandler (WindowDelete);
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this.BorderWidth = 8;
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VBox vbox = new VBox (false,8);
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vbox.BorderWidth = 8;
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this.Add (vbox);
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// Create the color swatch area
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Frame frame = new Frame ();
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frame.ShadowType = ShadowType.In;
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vbox.PackStart (frame, true, true, 0);
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drawingArea = new DrawingArea ();
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drawingArea.ExposeEvent += new ExposeEventHandler (ExposeEventCallback);
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// set a minimum size
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drawingArea.SetSizeRequest (200,200);
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// set the color
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color = new Gdk.Color (0, 0, 0xff);
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drawingArea.ModifyBg (StateType.Normal, color);
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frame.Add (drawingArea);
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Alignment alignment = new Alignment (1.0f, 0.5f, 0.0f, 0.0f);
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Button button = new Button ("_Change the above color");
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button.Clicked += new EventHandler (ChangeColorCallback);
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alignment.Add (button);
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vbox.PackStart (alignment);
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this.ShowAll ();
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}
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private void WindowDelete (object o, DeleteEventArgs args)
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{
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this.Hide ();
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this.Destroy ();
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args.RetVal = true;
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}
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// Expose callback for the drawing area
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private void ExposeEventCallback (object o, ExposeEventArgs args)
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{
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EventExpose eventExpose = args.Event;
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Gdk.Window window = eventExpose.Window;
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Rectangle area = eventExpose.Area;
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window.DrawRectangle (drawingArea.Style.BackgroundGC (StateType.Normal),
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true,
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area.X, area.Y,
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area.Width, area.Height);
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args.RetVal = true;
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}
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private void ChangeColorCallback (object o, EventArgs args)
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{
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using (ColorSelectionDialog colorSelectionDialog = new ColorSelectionDialog ("Changing color")) {
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colorSelectionDialog.TransientFor = this;
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colorSelectionDialog.ColorSelection.PreviousColor = color;
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colorSelectionDialog.ColorSelection.CurrentColor = color;
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colorSelectionDialog.ColorSelection.HasPalette = true;
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if (colorSelectionDialog.Run () == (int) ResponseType.Ok)
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{
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Gdk.Color selected = colorSelectionDialog.ColorSelection.CurrentColor;
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drawingArea.ModifyBg (StateType.Normal, selected);
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}
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colorSelectionDialog.Hide ();
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}
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}
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}
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}
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