First commit

Chapter01/listing1-1.php

@@ -0,0 +1,46 @@
+<?php
+/**
+ * A simple Object Oriented example.
+ */
+class Ralph {
+
+	public    $name   = 'Ralph';
+	protected $suffix = 'Sr';
+
+	public function __construct()
+	{
+		echo 'My name is ' . $this->name . ' ' . $this->suffix . ".\n";
+	}
+
+	public function giveBirth()
+	{
+		echo "It's a boy!\n";
+		return new Ralph_Jr();
+	}
+}
+
+class Ralph_Jr extends Ralph {
+
+	protected $suffix = 'Jr';
+
+	public function giveBirth()
+	{
+		throw new Exception('Ralph Jr. can\'t have kids!');
+	}
+}
+
+$senior = new Ralph();
+$junior = $senior->giveBirth();
+
+try {
+	$junior->giveBirth();
+} catch (Exception $e) {
+	echo $e->getMessage() . "\n";
+}
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ */
+?>

Chapter01/listing1-2.php

@@ -0,0 +1,10 @@
+<?php
+$window = new GtkWindow();
+$window->connect_object('destroy', array('Gtk', 'main_quit'));
+
+$dateTime = new GtkLabel(date('Y-m-d H:i:s'));
+
+$window->add($dateTime);
+$window->show_all();
+Gtk::main();
+?>

Chapter01/listing1-3.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * A really simple PHP-GTK application.
+ */
+$window = new GtkWindow();
+$window->connect_object('destroy', array('Gtk', 'main_quit'));
+$window->show();
+Gtk::main();
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ */
+?>

Chapter01/listing1_4.java

@@ -0,0 +1,17 @@
+import javax.swing.*;
+
+public class listing1_4 {
+
+    public static void createAndShowGUI() {
+	JFrame frame = new JFrame();
+	frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+	frame.setVisible(true);
+    }
+
+    public static void main(String[] args) {
+	  javax.swing.SwingUtilities.invokeLater(
+						 createAndShowGUI();
+						 );
+	  createAndShowGUI();
+    }
+}

Chapter03/listing3-1.php

@@ -0,0 +1,43 @@
+<?php
+/**
+ * A PHP implementation of GtkObject.
+ */
+class GtkObject {
+
+	private $flags;
+	private $refCounter;
+
+	public function destroy()
+	{
+		unset($this);
+	}
+
+	public function flags()
+	{
+		return $this->flags;
+	}
+
+	public function set_flags($flags)
+	{
+		$this->flags = $this->flags | $flags;
+	}
+
+	public function sink()
+	{
+		if (--$this->refCounter < 1) {
+			$this->destroy();
+		}
+	}
+
+	public function unset_flags($flags)
+	{
+		$this->flags = $this->flags & ~$flags;
+	}
+}
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ */
+?>

Chapter03/listing3-2.php

@@ -0,0 +1,41 @@
+<?php
+/**
+ * An example to show the various states of a widget.
+ */
+$widget = new GtkWindow();
+
+// If you try to grab the window before realizing 
+// the object you will get nothing.
+var_dump($widget->window);
+var_dump($widget->flags());
+
+$widget->realize();
+
+// Now that the widget is realized, we can grab
+// the window property.
+var_dump($widget->window);
+var_dump($widget->flags());
+
+$widget->show();
+
+// Showing and hiding a widget changes the value
+// of its flags.
+var_dump($widget->flags());
+
+$widget->hide();
+
+var_dump($widget->flags());
+
+$widget->unrealize();
+
+// Now that the widget is realized, we can grab
+// the window property.
+var_dump($widget->window);
+var_dump($widget->flags());
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ */
+?>

Chapter03/listing3-3.php

@@ -0,0 +1,23 @@
+<?php
+/**
+ * An example to what happens when you try to add a widget to two containers.
+ */
+$window = new GtkWindow();
+$frame  = new GtkFrame();
+$button = new GtkButton("I'm a button");
+
+$window->add($button);
+$frame->add($button); 
+
+/*
+Spits out this message:
+(listing-3.php:1870): Gtk-WARNING **: Attempting to add a widget with type GtkButton to a container of type GtkFrame, but the widget is already inside a container of type GtkWindow, the GTK+ FAQ at http://www.gtk.org/faq/ explains how to reparent a widget.
+*/
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ */
+?>

Chapter03/listing3-4.php

@@ -0,0 +1,41 @@
+<?php
+/**
+ * Getting, setting and changing a widgets parent.
+ */
+function testForParent($widget)
+{
+	$parent = $widget->get_parent();
+
+	echo 'The ' . get_class($widget) . ' has ';
+	if (isset($parent)) {
+		echo 'a ' . get_class($parent);
+	} else {
+		echo 'no';
+	}
+	echo " parent.\n";		
+}
+
+// Start with three widgets.
+$window = new GtkWindow();
+$frame  = new GtkFrame('I am a frame');
+$button = new GtkButton("I'm a button");
+
+testForParent($button);
+
+$button->set_parent($frame);
+testForParent($button);
+
+// What if we want the button to be added directly to
+// the window?
+$button->unparent();
+$button->set_parent($window);
+testForParent($button);
+$button->unparent();
+testForParent($button);
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ */
+?>

Chapter03/listing3-5.php

@@ -0,0 +1,43 @@
+<?php
+/**
+ * Getting, setting and changing a widgets parent.
+ */
+function testForParent($widget)
+{
+	$parent = $widget->get_parent();
+
+	echo 'The ' . get_class($widget) . ' has ';
+	if (isset($parent)) {
+		echo 'a ' . get_class($parent);
+	} else {
+		echo 'no';
+	}
+	echo " parent.\n";		
+}
+
+// Start with three widgets.
+$window = new GtkWindow();
+$frame  = new GtkFrame('I am a frame');
+$button = new GtkButton("I'm a button");
+
+testForParent($button);
+
+$frame->add($button);
+testForParent($button);
+
+// What if we want the button to be added directly to
+// the window?
+$frame->remove($button);
+$window->add($button);
+testForParent($button);
+
+// No switch it back to the frame.
+$button->reparent($frame);
+testForParent($button);
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ */
+?>

Chapter04/listing4-1.php

@@ -0,0 +1,38 @@
+<?php
+/**
+ * Reacting to events.
+ */
+function setParentFunction($widget)
+{
+	$parent = $widget->get_parent();
+
+	echo 'The ' . get_class($widget) . ' has ';
+	if (isset($parent)) {
+		echo 'a ' . get_class($parent);
+	} else {
+		echo 'no';
+	}
+	echo " parent.\n";		
+}
+
+// Start with three widgets.
+$window = new GtkWindow();
+$frame  = new GtkFrame('I am a frame');
+$button = new GtkButton("I'm a button");
+
+// Connect the event to our test function
+$button->connect('parent-set', 'setParentFunction');
+
+// Now set some parents.
+$button->set_parent($window);
+$button->unparent();
+$frame->add($button);
+
+$button->reparent($window);
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ */
+?>

Chapter04/listing4-2.php

@@ -0,0 +1,46 @@
+<?php
+/**
+ * Reacting to events.
+ */
+class ExtendedButton extends GtkButton {
+
+	public function __construct($label)
+	{
+		parent::__construct($label);
+
+		$this->connect('parent-set', array($this, 'printParentSet'));
+	}
+
+	public function printParentSet($widget)
+	{
+		$parent = $widget->get_parent();
+
+		echo 'The ' . get_class($widget) . ' has ';
+		if (isset($parent)) {
+			echo 'a ' . get_class($parent);
+		} else {
+			echo 'no';
+		}
+		echo " parent.\n";		
+	}
+}
+
+// Start with three widgets.
+$window = new GtkWindow();
+$frame  = new GtkFrame('I am a frame');
+$button = new ExtendedButton("I'm a button");
+
+// Now set some parents.
+$button->set_parent($window);
+$button->unparent();
+$frame->add($button);
+
+$frame->connect('parent-set', array('ExtendedButton', 'printParentSet'));
+$window->add($frame);
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ */
+?>