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<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" xmlns:xi="http://www.w3.org/2001/XInclude" type="guide" style="task" id="image.vala" xml:lang="gl">
<info>
<title type="text">Image (Vala)</title>
<link type="guide" xref="beginner.vala#display-widgets"/>
<revision version="0.1" date="2012-05-03" status="draft"/>
<credit type="author copyright">
<name>Tiffany Antopolski</name>
<email its:translate="no">tiffany.antopolski@gmail.com</email>
<years>2012</years>
</credit>
<desc>A widget displaying an image</desc>
<mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
<mal:name>Fran Dieguez</mal:name>
<mal:email>frandieguez@gnome.org</mal:email>
<mal:years>2012-2013.</mal:years>
</mal:credit>
</info>
<title>Image</title>
<media type="image" mime="image/png" src="media/image.png"/>
<p>This GtkApplication displays an image file from the current directory.</p>
<note><p>
If the image file isn't loaded successfully, the image will contain a "broken image" icon. The <file>filename.png</file> needs to be in the current directory for this code to work. Use your favorite picture!
</p></note>
<code mime="text/x-csharp" style="numbered">public class MyWindow : Gtk.ApplicationWindow {
internal MyWindow (MyApplication app) {
Object (application: app, title: "Welcome to GNOME");
var image = new Gtk.Image ();
image.set_from_file ("gnome-image.png");
this.add (image);
this.set_default_size (300, 300);
}
}
public class MyApplication : Gtk.Application {
protected override void activate () {
new MyWindow (this).show_all ();
}
internal MyApplication () {
Object (application_id: "org.example.MyApplication");
}
}
public int main (string[] args) {
return new MyApplication ().run (args);
}
</code>
<p>Neste exemplo empregaremos o seguinte:</p>
<list>
<item><p><link href="http://www.valadoc.org/gtk+-3.0/Gtk.Application.html">GtkApplication</link></p></item>
<item><p><link href="http://www.valadoc.org/gtk+-3.0/Gtk.ApplicationWindow.html">GtkApplicationWindow</link></p></item>
<item><p><link href="http://www.valadoc.org/gtk+-3.0/Gtk.Image.html">GtkImage</link></p></item>
</list>
</page>
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