Slide show XML loading

example/bin/data/ofxpimapper.xml

@@ -78,4 +78,14 @@
             <perspectiveWarping>1</perspectiveWarping>
         </properties>
     </surface>
+    <magSlideShow>
+        <Width>1920</Width>
+        <Height>1080</Height>
+        <SlideDuration>0.5</SlideDuration> <!-- Optional default duration for each slide-->
+        <Loop>
+            <Type>PING-PONG</Type> <!-- NONE | NORMAL | PING-PONG -->
+        </Loop>
+        <!-- NoResize | Native | Fit | FitProportionally | FillProportionally -->
+        <ResizeOption>FitProportionally</ResizeOption>
+    </magSlideShow>
 </surfaces>

example/src/magSlide.h

@@ -50,7 +50,6 @@ public:
 		/**
 		 * Resizes the largest dimension to the source's max,
 		 * the other dimension is resized proportionally.
-		 * This is the default behavior.
 		*/
 				FitProportionally,
 

example/src/magSlideShowSource.cpp

@@ -6,8 +6,8 @@
 
 
 #include "magSlideShowSource.h"
-#include "magSlide.h"
 #include "magSlideTransition.h"
+#include "SettingsLoader.h"
 
 magSlideShowSource::magSlideShowSource()
 {
@@ -189,11 +189,79 @@ bool magSlideShowSource::createFromFolderContents(std::string path)
 	}
 }
 
-
-bool magSlideShowSource::loadSlideShow(std::string slideShowXmlPath)
+bool magSlideShowSource::loadFromXml()
 {
+	auto *loader = ofx::piMapper::SettingsLoader::instance();
+	auto xml = ofxXmlSettings();
+	Settings settings;
+
+	if (!xml.load(loader->getLastLoadedFilename()))
+	{
+		ofLogError("magSlideShowSource") << "Could not load settings file " << loader->getLastLoadedFilename();
+		return false;
+	}
+
+	xml.pushTag("surfaces");
+	if (!xml.pushTag("magSlideShow"))
+	{
+		ofLogError("magSlideShowSource") << "Slide show settings not found in " << loader->getLastLoadedFilename();
+		return false;
+	}
+
+	settings.width = xml.getValue("Width", settings.width);
+	settings.height = xml.getValue("Height", settings.height);
+
+	// Default slide duration:
+	settings.slideDuration = xml.getValue("SlideDuration", settings.slideDuration);
+
+	// Default loop:
+	if (xml.pushTag("Loop"))
+	{
+		auto type = xml.getValue("Type", "");
+		if (type == "NONE")
+		{
+			settings.loopType = LoopType::NONE;
+		}
+		else if (type == "NORMAL")
+		{
+			settings.loopType = LoopType::NORMAL;
+		}
+		else if (type == "PING-PONG")
+		{
+			settings.loopType = LoopType::PING_PONG;
+		}
+
+		settings.numLoops = xml.getValue("Count", settings.numLoops);
+		xml.popTag();
+	}
+
+	// Default resize options:
+	auto ropts = xml.getValue("ResizeOption", "");
+	if (ropts == "NoResize")
+	{
+		settings.resizeOption = magSlide::NoResize;
+	}
+	else if (ropts == "Native")
+	{
+		settings.resizeOption = magSlide::Native;
+	}
+	else if (ropts == "Fit")
+	{
+		settings.resizeOption = magSlide::Fit;
+	}
+	else if (ropts == "FitProportionally")
+	{
+		settings.resizeOption = magSlide::FitProportionally;
+	}
+	else if (ropts == "FillProportionally")
+	{
+		settings.resizeOption = magSlide::FillProportionally;
+	}
+
+	initialize(settings);
+
+	return true;
 
-	return false;
 }
 
 void magSlideShowSource::addSlide(std::shared_ptr<magSlide> slide)

example/src/magSlideShowSource.h

@@ -35,7 +35,8 @@ public:
      * otherwise. Check the console for the specific error.
      */
     bool createFromFolderContents(std::string path);
-    bool loadSlideShow(std::string slideShowXmlPath);
+
+    bool loadFromXml();
     void addSlide(std::shared_ptr<magSlide> slide);
     void play();
     void pause();
@@ -43,7 +44,7 @@ public:
     void playPrevSlide();
     void playSlide(int slideIndex);
 
-    enum LoopType
+    enum LoopType : int
     {
         NONE = 0,
         NORMAL,
@@ -53,14 +54,14 @@ public:
     struct Settings
     {
         /**
-         * The pixel width of the FBO. This value must be provided.
+         * The pixel width of the FBO.
          */
-        float width = 0;
+        float width = 1280;
 
         /**
-         * The pixel height of the FBO. This value must be provided.
+         * The pixel height of the FBO.
          */
-        float height = 0;
+        float height = 720;
         /**
          * An optional default slide duration, in seconds.
          * If a slide specifies a duration this value is ignored.
@@ -76,7 +77,7 @@ public:
          * An optional default transition duration. If no transition
          * is specified, this value is ignored;
          */
-        float transitionDuration = 1;
+        float transitionDuration = 0;
 
         /**
          * If specified, all applicable files in the folder will
@@ -85,7 +86,7 @@ public:
          *
          * If path is relative, the root will likely be the Data folder.
          */
-        std::string slidesFolderPath;
+        std::string slidesFolderPath = "sources/images";
 
         /**
          * If specified,
@@ -105,12 +106,12 @@ public:
          */
         int numLoops = 0;
 
-        /**
-         * The resizing option for the slide show. The default is None. If a slide
-         * already has a resizing option applied, that option will be respected and
-         * this resizeOption will not be used.
-         */
-        magSlide::ResizeOptions resizeOption = magSlide::ResizeOptions::NoResize;
+		/**
+		 * The resizing option for the slide show. The default is FitProportionally.
+		 * If a slide already has a resizing option applied, that option will be
+		 * respected and this resizeOption will not be used.
+		 */
+        magSlide::ResizeOptions resizeOption = magSlide::ResizeOptions::FitProportionally;
     };
 
     ////////////////////////////////////////////

example/src/ofApp.cpp

@@ -19,17 +19,10 @@ void ofApp::setup(){
 	slideShowSource = new magSlideShowSource();
 
 	// Create the settings struct for the slide show.
-    magSlideShowSource::Settings settings;
-    settings.width = 1280;
-    settings.height = 720;
-    settings.slidesFolderPath = "sources/images";
-    settings.transitionDuration = 0;
-    settings.slideDuration = 0.5;
-    settings.loopType = magSlideShowSource::LoopType::NORMAL;
-	settings.resizeOption = magSlide::ResizeOptions::FitProportionally;
 
 	// Initialize the slide show with our settings.
-    slideShowSource->initialize(settings);
+	// If it fails, initialize from default settings
+
 
 	// Register our sources:
 	piMapper.registerFboSource(crossSource);
@@ -37,9 +30,17 @@ void ofApp::setup(){
 	piMapper.registerFboSource(slideShowSource);
 	piMapper.setup();
 
+	// Slide show needs to be loaded after piMapper is set up:
+	if (!slideShowSource->loadFromXml())
+	{
+		ofLogNotice("setup") << "loading magSlideShowSource XML settings failed. Initializing from default values";
+		magSlideShowSource::Settings sets;
+		slideShowSource->initialize(sets);
+	}
+
 	// The info layer is hidden by default, press <i> to toggle
 	// piMapper.showInfo();
-	
+
 	ofSetFullscreen(Settings::instance()->getFullscreen());
 	ofSetEscapeQuitsApp(false);
     ofSetLogLevel(OF_LOG_VERBOSE);