auroraeosrose		Thu Jul 31 15:05:03 2008 UTC

  Modified files:              
    /php-gtk/demos/examples	cairo_support.php 
  Log:
  Cairo example complete - ticking clock in PHP-GTK
  
http://cvs.php.net/viewvc.cgi/php-gtk/demos/examples/cairo_support.php?r1=1.1&r2=1.2&diff_format=u
Index: php-gtk/demos/examples/cairo_support.php
diff -u php-gtk/demos/examples/cairo_support.php:1.1 php-gtk/demos/examples/cairo_support.php:1.2
--- php-gtk/demos/examples/cairo_support.php:1.1	Thu Jul 31 01:52:19 2008
+++ php-gtk/demos/examples/cairo_support.php	Thu Jul 31 15:05:03 2008
@@ -1,27 +1,186 @@
 <?php
 class Clock extends GtkDrawingArea {
 
-	protected $context;
+	public $__gsignals = array(
+				'time_changed' => array(
+					GObject::SIGNAL_RUN_FIRST, GObject::TYPE_NONE,
+					array(GObject::TYPE_LONG, GObject::TYPE_LONG)
+				),
+			);
+
+	private $time;
+	private $minute_offset = 0;
+	private $dragging = false;
 
 	public function __construct() {
 		parent::__construct();
-		$this->connect_simple('expose-event', array($this, 'expose'));
+		$this->connect('expose-event', array($this, 'expose'));
+		$this->connect('button-press-event', array($this, 'button_press'));
+		$this->connect('button-release-event', array($this, 'button_release'));
+		$this->connect('motion-notify-event', array($this, 'motion_notify'));
+
+		$this->add_events(Gdk::BUTTON_PRESS_MASK |
+                        Gdk::BUTTON_RELEASE_MASK |
+                        Gdk::POINTER_MOTION_MASK);
+
+		$this->update();
+		Gtk::timeout_add(1000, array($this, 'update'));
+	}
+
+	public function expose($widget, $event) {
+		$context = $this->window->cairo_create();
+		$context->rectangle($event->area->x, $event->area->y,
+							$event->area->width, $event->area->height);
+		$context->clip();
+		$this->draw($context);
+	}
+
+	public function update() {
+		$this->time = getdate();
+        $this->redraw_canvas();
+		return true;
+	}
+
+	protected function redraw_canvas() {
+		if($this->window) {
+			$alloc = $this->get_allocation();
+			$rect = new GdkRectangle($alloc->x, $alloc->y, $alloc->width, $alloc->height);
+			$this->window->invalidate_rect($rect, true);
+			$this->queue_draw_area($alloc->x, $alloc->y, $alloc->width, $alloc->height);
+			$this->window->process_updates(true);
+		}
+	}
+
+	public function motion_notify($widget, $event) {
+		if($this->dragging) {
+			$x =$event->x - ($this->get_allocation()->width / 2);
+			$y = $event->y - ($this->get_allocation()->height / 2);
+
+			$phi = atan2($x, -$y);
+			if($phi < 0) {
+				$phi += pi() * 2;
+			}
+
+			$hour = $this->time['hours'];
+			$minute = $phi * 30 / pi();
+
+			$this->minute_offset = $minute - $this->time['minutes'];
+			$this->redraw_canvas();
+			$this->emit('time_changed', $hour, $minute);
+		}
+	}
+
+	public function button_press($widget, $event) {
+        $minutes = $this->time['minutes'] + $this->minute_offset;
+
+        $px = $event->x - $widget->get_allocation()->width / 2;
+        $py = $widget->get_allocation()->height / 2 - $event->y;
+        $lx = sin(pi() / 30 * $minutes);
+        $ly = cos(pi() / 30 * $minutes);
+        $u = $lx * $px + $ly * $py;
+
+        if ($u < 0)
+            return;
+
+        $d2 = pow($px - $u * $lx, 2) + pow($py - $u * $ly, 2);
+
+        if(d2 < 25) {
+            $this->dragging = true;
+            echo "got minute hand\n";
+		}
 	}
 
-	public function expose() {
-		$this->realize();
-		$this->context = $this->window->cairo_create();
-		var_dump($this->context);
-		//$this->context->rectangle(1,1,50,50);
-		//$this->context->stroke();
+	public function button_release($widget, $event) {
+        if($this->dragging) {
+			$this->motion_notify($widget, $event);
+			$this->dragging = false;
+		}
 	}
+
+	public function draw($context) {
+		$rect = $this->get_allocation();
+
+		$x = $rect->x + $rect->width / 2.0;
+		$y = $rect->y + $rect->height / 2.0;
+		$radius = min($rect->width / 2.0, $rect->height / 2.0) - 5;
+
+		// clock background
+		$context->arc($x, $y, $radius, 0, 2.0 * pi());
+		$context->setSourceRgb(1, 1, 1);
+        $context->fillPreserve();
+        $context->setSourceRgb(0, 0, 0);
+        $context->stroke();
+
+		// clock ticks
+		foreach(range(1, 12) as $i) {
+			$context->save();
+
+			if($i % 3 == 0) {
+				$inset = 0.2 * $radius;
+			} else {
+				$inset = 0.1 * $radius;
+				$context->setLineWidth(0.5 * $context->getLineWidth());
+			}
+
+            $context->moveTo($x + ($radius - $inset) * cos($i * pi() / 6.0),
+                            $y + ($radius - $inset) * sin($i * pi() / 6.0));
+            $context->lineTo($x + $radius * cos($i * pi() / 6.0),
+                            $y + $radius * sin($i * pi() / 6.0));
+            $context->stroke();
+            $context->restore();
+		}
+
+		// clock hands
+        $hours = $this->time['hours'];
+        $minutes = $this->time['minutes'] + $this->minute_offset;
+        $seconds = $this->time['seconds'];
+
+        // hour hand
+        //the hour hand is rotated 30 degrees (pi/6 r) per hour +  1/2 a degree (pi/360) per minute
+        $context->save();
+        $context->setLineWidth(2.5 * $context->getLineWidth());
+        $context->moveTo($x, $y);
+        $context->lineTo($x + $radius / 2 * sin(
+            pi() / 6 * $hours + pi() / 360 * $minutes),
+                        $y + $radius / 2 * - cos(
+            pi() / 6 * $hours + pi() / 360 * $minutes));
+        $context->stroke();
+        $context->restore();
+
+        // minute hand
+        // the minute hand is rotated 6 degrees (pi/30 r) per minute
+        $context->moveTo($x, $y);
+        $context->lineTo($x + $radius * 0.75 * sin(pi() / 30 * $minutes),
+                        $y + $radius * 0.75 * - cos(pi() / 30 * $minutes));
+        $context->stroke();
+
+        // seconds hand
+        $context->save();
+        $context->setSourceRgb(1, 0, 0); // red
+        $context->moveTo($x, $y);
+        $context->lineTo($x + $radius * 0.7 * sin(pi() / 30 * $seconds),
+                        $y + $radius * 0.7 * - cos(pi() / 30 * $seconds));
+        $context->stroke();
+        $context->restore();
+	}
+
+}
+Gobject::register_type('Clock');
+
+function time_changed_cb($widget, $hours, $minutes) {
+    echo "time-changed - $hours:$minutes\n";
 }
 
 $window = new GtkWindow();
 $clock = new Clock();
 $window->add($clock);
 $window->connect_simple('destroy', array('Gtk', 'main_quit'));
+$clock->connect('time_changed', 'time_changed_cb');
 $window->show_all();
 
 Gtk::main();
-?>
\ No newline at end of file
+?>
+
+
+
+