mirror of
https://github.com/Ryujinx/GtkSharp.git
synced 2024-12-25 08:45:34 +00:00
f774796311
* gconf/GConf.PropertyEditors/PropertyEditorColorPicker.cs : nuke a GnomeSharp. * generator/Signal.cs : move eventhandlers and args into the base namespace instead of a *Sharp namespace. * sample/*.cs : nuke using *Sharp. svn path=/trunk/gtk-sharp/; revision=22956
166 lines
4.6 KiB
C#
166 lines
4.6 KiB
C#
//
|
|
// DemoImages.cs - port of images.c gtk-demo
|
|
//
|
|
// Author: Daniel Kornhauser <dkor@alum.mit.edu>
|
|
//
|
|
// Copyright (C) 2003, Ximian Inc.
|
|
//
|
|
|
|
|
|
/* Images
|
|
*
|
|
* Gtk.Image is used to display an image; the image can be in a number of formats.
|
|
* Typically, you load an image into a Gdk.Pixbuf, then display the pixbuf.
|
|
*
|
|
* This demo code shows some of the more obscure cases, in the simple
|
|
* case a call to the constructor Gtk.Image (string filename) is all you need.
|
|
*
|
|
* If you want to put image data in your program compile it in as a resource.
|
|
* This way you will not need to depend on loading external files, your
|
|
* application binary can be self-contained.
|
|
*/
|
|
|
|
// TODO:
|
|
// Finish implementing the callback, I can't get the image
|
|
// to show up, and I'm stuck in the ProgressivePreparedCallback
|
|
// because I can't get a white background to appear
|
|
|
|
using System;
|
|
using System.IO;
|
|
|
|
using Gtk;
|
|
using Gdk;
|
|
|
|
namespace GtkDemo {
|
|
public class DemoImages
|
|
{
|
|
private Gtk.Window window;
|
|
private static Gtk.Image progressiveImage;
|
|
private VBox vbox;
|
|
public DemoImages ()
|
|
{
|
|
window = new Gtk.Window ("Images");
|
|
window.DeleteEvent += new DeleteEventHandler (WindowDelete);
|
|
window.BorderWidth = 8;
|
|
|
|
vbox = new VBox (false, 8);
|
|
vbox.BorderWidth = 8;
|
|
window.Add (vbox);
|
|
|
|
Gtk.Label label = new Gtk.Label ("<u>Image loaded from a file</u>");
|
|
label.UseMarkup = true;
|
|
vbox.PackStart (label, false, false, 0);
|
|
|
|
Gtk.Frame frame = new Gtk.Frame ();
|
|
frame.ShadowType = ShadowType.In;
|
|
|
|
// The alignment keeps the frame from growing when users resize
|
|
// the window
|
|
Alignment alignment = new Alignment (0.5f, 0.5f, 0f, 0f);
|
|
alignment.Add (frame);
|
|
vbox.PackStart (alignment, false, false, 0);
|
|
|
|
Gtk.Image image = new Gtk.Image ("images/gtk-logo-rgb.gif");
|
|
frame.Add (image);
|
|
|
|
// Animation
|
|
label = new Gtk.Label ("<u>Animation loaded from a file</u>");
|
|
label.UseMarkup = true;
|
|
vbox.PackStart (label);
|
|
|
|
frame = new Gtk.Frame ();
|
|
frame.ShadowType = ShadowType.In;
|
|
|
|
alignment = new Alignment (0.5f, 0.5f, 0f, 0f);
|
|
alignment.Add (frame);
|
|
vbox.PackStart (alignment, false, false, 0);
|
|
|
|
image = new Gtk.Image ("images/floppybuddy.gif");
|
|
frame.Add (image);
|
|
|
|
// Progressive
|
|
label = new Gtk.Label ("<u>Progressive image loading</u>");
|
|
label.UseMarkup = true;
|
|
vbox.PackStart (label);
|
|
|
|
frame = new Gtk.Frame ();
|
|
frame.ShadowType = ShadowType.In;
|
|
|
|
alignment = new Alignment (0.5f, 0.5f, 0f, 0f);
|
|
alignment.Add (frame);
|
|
vbox.PackStart (alignment, false, false, 0);
|
|
|
|
// Create an empty image for now; the progressive loader
|
|
// will create the pixbuf and fill it in.
|
|
//
|
|
|
|
progressiveImage = new Gtk.Image ();
|
|
frame.Add (progressiveImage);
|
|
|
|
StartProgressiveLoading ();
|
|
|
|
// Sensitivity control
|
|
Gtk.ToggleButton button = new Gtk.ToggleButton ("_Insensitive");
|
|
vbox.PackStart (button, false, false, 0);
|
|
button.Toggled += new EventHandler (ToggleSensitivity);
|
|
|
|
window.ShowAll ();
|
|
}
|
|
|
|
private void WindowDelete (object o, DeleteEventArgs args)
|
|
{
|
|
window.Hide ();
|
|
window.Destroy ();
|
|
}
|
|
|
|
private void ToggleSensitivity (object o, EventArgs args)
|
|
{
|
|
GLib.List children = vbox.Children;
|
|
foreach (Widget widget in children)
|
|
/* don't disable our toggle */
|
|
if (widget.GetType () != o.GetType () )
|
|
widget.Sensitive = !widget.Sensitive;
|
|
}
|
|
|
|
|
|
private uint timeout_id;
|
|
private void StartProgressiveLoading ()
|
|
{
|
|
/* This is obviously totally contrived (we slow down loading
|
|
* on purpose to show how incremental loading works).
|
|
* The real purpose of incremental loading is the case where
|
|
* you are reading data from a slow source such as the network.
|
|
* The timeout simply simulates a slow data source by inserting
|
|
* pauses in the reading process.
|
|
*/
|
|
timeout_id = GLib.Timeout.Add(150, new GLib.TimeoutHandler(ProgressiveTimeout));
|
|
}
|
|
|
|
static Gdk.PixbufLoader pixbufLoader;
|
|
|
|
// TODO: Finish this callback
|
|
// Decide if we want to perform crazy error handling
|
|
private bool ProgressiveTimeout()
|
|
{
|
|
Gtk.Image imageStream = new Gtk.Image ("images/alphatest.png");
|
|
pixbufLoader = new Gdk.PixbufLoader ();
|
|
pixbufLoader.AreaPrepared += new EventHandler (ProgressivePreparedCallback);
|
|
pixbufLoader.AreaUpdated += new AreaUpdatedHandler (ProgressiveUpdatedCallback);
|
|
return true;
|
|
}
|
|
|
|
static void ProgressivePreparedCallback (object obj, EventArgs args)
|
|
{
|
|
Gdk.Pixbuf pixbuf = pixbufLoader.Pixbuf;
|
|
pixbuf.Fill (0xaaaaaaff);
|
|
progressiveImage.FromPixbuf = pixbuf;
|
|
}
|
|
|
|
static void ProgressiveUpdatedCallback (object obj, AreaUpdatedArgs args)
|
|
{
|
|
|
|
}
|
|
|
|
}
|
|
}
|