Added a property notification example

Change-Id: I0971701ac37ccc5e86bf88976bec17d59919025b

Added a property notification example
Change-Id: I0971701ac37ccc5e86bf88976bec17d59919025b
Adeel Kazmi
1 parent 87d45c11
Showing 6 changed files with 137 additions and 0 deletions
com.samsung.dali-demo.xml
examples-reel/dali-examples-reel.cpp
examples/property-notification/property-notification-example.cpp
resources/po/en_GB.po
resources/po/en_US.po
shared/dali-demo-strings.h
@@ -235,6 +235,9 @@
 	<ui-application appid="text-overlap.example" exec="/usr/apps/com.samsung.dali-demo/bin/text-overlap.example" nodisplay="true" multiple="false" type="c++app" taskmanage="true">
 		<label>Text Overlap</label>
 	</ui-application>
+	<ui-application appid="property-notification.example" exec="/usr/apps/com.samsung.dali-demo/bin/property-notification.example" nodisplay="true" multiple="false" type="c++app" taskmanage="true">
+		<label>Property Notification</label>
+	</ui-application>
 	<privileges>
 		<privilege>http://tizen.org/privilege/mediastorage</privilege>
 		<privilege>http://tizen.org/privilege/externalstorage</privilege>
@@ -65,6 +65,7 @@ int DALI_EXPORT_API main(int argc, char **argv)
   demo.AddExample(Example("pivot.example", DALI_DEMO_STR_TITLE_PIVOT));
   demo.AddExample(Example("primitive-shapes.example", DALI_DEMO_STR_TITLE_PRIMITIVE_SHAPES));
   demo.AddExample(Example("progress-bar.example", DALI_DEMO_STR_TITLE_PROGRESS_BAR));
+  demo.AddExample(Example("property-notification.example", DALI_DEMO_STR_TITLE_PROPERTY_NOTIFICATION));
   demo.AddExample(Example("rendering-basic-light.example", DALI_DEMO_STR_TITLE_BASIC_LIGHT));
   demo.AddExample(Example("rendering-line.example", DALI_DEMO_STR_TITLE_RENDERING_DRAW_LINE));
   demo.AddExample(Example("rendering-triangle.example", DALI_DEMO_STR_TITLE_RENDERING_DRAW_TRIANGLE));
+/*
+ * Copyright (c) 2017 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <dali/devel-api/actors/actor-devel.h>
+#include <dali-toolkit/dali-toolkit.h>
+#include <dali-toolkit/devel-api/controls/text-controls/text-label-devel.h>
+
+using namespace Dali;
+using namespace Dali::Toolkit;
+
+namespace
+{
+const float COLOR_ANIMATION_DURATION( 5.0f );
+const float OPACITY_ANIMATION_DURATION( 1.0f );
+} // unnamed namespace
+
+/**
+ * @brief An example that shows how to use property notifications.
+ *
+ * - Creates a text label and sets its text color to black.
+ * - Animates the text color of a text label to red.
+ * - Sets up a property notification so that we are informed when the color is 50% red.
+ * - When we are notified, we start a new animation which animates the text label to transparent.
+ */
+class PropertyNotificationController : public ConnectionTracker
+{
+public:
+
+  /**
+   * @brief Constructor.
+   * @param[in] application A reference to the Application class.
+   */
+  PropertyNotificationController( Application& application )
+  : mApplication( application )
+  {
+    // Connect to the Application's Init signal
+    mApplication.InitSignal().Connect( this, &PropertyNotificationController::Create );
+  }
+
+  /**
+   * @brief Called to initialise the application content
+   * @param[in] application A reference to the Application class.
+   */
+  void Create( Application& application )
+  {
+    // Set the stage background color and connect to the stage's key signal to allow Back and Escape to exit.
+    Stage stage = Stage::GetCurrent();
+    stage.SetBackgroundColor( Color::WHITE );
+    stage.KeyEventSignal().Connect( this, &PropertyNotificationController::OnKeyEvent );
+
+    // Create a text label and set the text color to black
+    mTextLabel = TextLabel::New( "Black to Red Animation\nNew opacity animation at 50% Red" );
+    mTextLabel.SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER );
+    mTextLabel.SetProperty( Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER );
+    mTextLabel.SetProperty( TextLabel::Property::MULTI_LINE, true );
+    mTextLabel.SetProperty( TextLabel::Property::HORIZONTAL_ALIGNMENT, "CENTER" );
+    mTextLabel.SetProperty( DevelTextLabel::Property::TEXT_COLOR_ANIMATABLE, Color::BLACK );
+    stage.Add( mTextLabel );
+
+    // Create an animation and animate the text color to red
+    Animation animation = Animation::New( COLOR_ANIMATION_DURATION );
+    animation.AnimateTo( Property( mTextLabel, DevelTextLabel::Property::TEXT_COLOR_ANIMATABLE ), Color::RED );
+    animation.Play();
+
+    // Set up a property notification so we are notified when the red component of the text-color reaches 50%
+    PropertyNotification notification = mTextLabel.AddPropertyNotification( DevelTextLabel::Property::TEXT_COLOR_RED, GreaterThanCondition( 0.5f ) );
+    notification.NotifySignal().Connect( this, &PropertyNotificationController::RedComponentNotification );
+  }
+
+  /**
+   * @brief Called when any key event is received
+   *
+   * Will use this to quit the application if Back or the Escape key is received
+   * @param[in] event The key event information
+   */
+  void OnKeyEvent( const KeyEvent& event )
+  {
+    if( event.state == KeyEvent::Down )
+    {
+      if ( IsKey( event, Dali::DALI_KEY_ESCAPE ) || IsKey( event, Dali::DALI_KEY_BACK ) )
+      {
+        mApplication.Quit();
+      }
+    }
+  }
+
+  /**
+   * @brief Called when the property notification condition is met.
+   *
+   * In our case, it's when the red component is greater than 50%.
+   * Will use this notification to animate the opacity of the text-label to transparent.
+   */
+  void RedComponentNotification( PropertyNotification& /* source */ )
+  {
+    Animation animation = Animation::New( OPACITY_ANIMATION_DURATION );
+    animation.AnimateTo( Property( mTextLabel, DevelActor::Property::OPACITY ), 0.0f );
+    animation.Play();
+  }
+
+private:
+  Application& mApplication;
+  TextLabel mTextLabel;
+};
+
+int DALI_EXPORT_API main( int argc, char **argv )
+{
+  Application application = Application::New( &argc, &argv );
+  PropertyNotificationController test( application );
+  application.MainLoop();
+  return 0;
+}
@@ -109,6 +109,9 @@ msgstr &quot;Pivot&quot;
 msgid "DALI_DEMO_STR_TITLE_PROGRESS_BAR"
 msgstr "Progress Bar"
+msgid "DALI_DEMO_STR_TITLE_PROPERTY_NOTIFICATION"
+msgstr "Property Notification"
+
 msgid "DALI_DEMO_STR_TITLE_PRIMITIVE_SHAPES"
 msgstr "Primitive Shapes"
@@ -109,6 +109,9 @@ msgstr &quot;Pivot&quot;
 msgid "DALI_DEMO_STR_TITLE_PROGRESS_BAR"
 msgstr "Progress Bar"
+msgid "DALI_DEMO_STR_TITLE_PROPERTY_NOTIFICATION"
+msgstr "Property Notification"
+
 msgid "DALI_DEMO_STR_TITLE_PRIMITIVE_SHAPES"
 msgstr "Primitive Shapes"
@@ -73,6 +73,7 @@ extern &quot;C&quot;
 #define DALI_DEMO_STR_TITLE_PIVOT                       dgettext(DALI_DEMO_DOMAIN_LOCAL, "DALI_DEMO_STR_TITLE_PIVOT")
 #define DALI_DEMO_STR_TITLE_PRIMITIVE_SHAPES            dgettext(DALI_DEMO_DOMAIN_LOCAL, "DALI_DEMO_STR_TITLE_PRIMITIVE_SHAPES")
 #define DALI_DEMO_STR_TITLE_PROGRESS_BAR                dgettext(DALI_DEMO_DOMAIN_LOCAL, "DALI_DEMO_STR_TITLE_PROGRESS_BAR")
+#define DALI_DEMO_STR_TITLE_PROPERTY_NOTIFICATION       dgettext(DALI_DEMO_DOMAIN_LOCAL, "DALI_DEMO_STR_TITLE_PROPERTY_NOTIFICATION")
 #define DALI_DEMO_STR_TITLE_REFRACTION                  dgettext(DALI_DEMO_DOMAIN_LOCAL, "DALI_DEMO_STR_TITLE_REFRACTION")
 #define DALI_DEMO_STR_TITLE_REMOTE_IMAGE                dgettext(DALI_DEMO_DOMAIN_LOCAL, "DALI_DEMO_STR_TITLE_REMOTE_IMAGE")
 #define DALI_DEMO_STR_TITLE_RENDERING_DRAW_LINE         dgettext(DALI_DEMO_DOMAIN_LOCAL, "DALI_DEMO_STR_TITLE_RENDERING_DRAW_LINE")
@@ -142,6 +143,7 @@ extern &quot;C&quot;
 #define DALI_DEMO_STR_TITLE_PIVOT                       "Pivot"
 #define DALI_DEMO_STR_TITLE_PRIMITIVE_SHAPES            "Primitive Shapes"
 #define DALI_DEMO_STR_TITLE_PROGRESS_BAR                "Progress Bar"
+#define DALI_DEMO_STR_TITLE_PROPERTY_NOTIFICATION       "Property Notification"
 #define DALI_DEMO_STR_TITLE_REFRACTION                  "Refract Effect"
 #define DALI_DEMO_STR_TITLE_REMOTE_IMAGE                "Remote Image"
 #define DALI_DEMO_STR_TITLE_RENDERING_DRAW_LINE         "Draw Line"