Working on web entities

examples/edit.js

@@ -137,6 +137,7 @@ var toolBar = (function () {
         newSphereButton,
         newLightButton,
         newTextButton,
+        newWebButton,
         newZoneButton,
         browseMarketplaceButton;
 
@@ -204,6 +205,16 @@ var toolBar = (function () {
             alpha: 0.9,
             visible: false
         });
+
+        newWebButton = toolBar.addTool({
+            imageURL: toolIconUrl + "add-text.svg",
+            subImage: { x: 0, y: Tool.IMAGE_WIDTH, width: Tool.IMAGE_WIDTH, height: Tool.IMAGE_HEIGHT },
+            width: toolWidth,
+            height: toolHeight,
+            alpha: 0.9,
+            visible: false
+        });
+
         newZoneButton = toolBar.addTool({
             imageURL: toolIconUrl + "zonecube_text.svg",
             subImage: { x: 0, y: 128, width: 128, height: 128 },
@@ -253,6 +264,7 @@ var toolBar = (function () {
         toolBar.showTool(newSphereButton, doShow);
         toolBar.showTool(newLightButton, doShow);
         toolBar.showTool(newTextButton, doShow);
+        toolBar.showTool(newWebButton, doShow);
         toolBar.showTool(newZoneButton, doShow);
     };
 
@@ -425,6 +437,23 @@ var toolBar = (function () {
             return true;
         }
 
+        if (newWebButton === toolBar.clicked(clickedOverlay)) {
+            print("Web");
+            var position = getPositionToCreateEntity();
+
+            if (position.x > 0 && position.y > 0 && position.z > 0) {
+                placingEntityID = Entities.addEntity({
+                                type: "Web",
+                                position: grid.snapToSurface(grid.snapToGrid(position, false, DEFAULT_DIMENSIONS), DEFAULT_DIMENSIONS),
+                                dimensions: { x: 0.65, y: 0.3, z: 0.01 },
+                                source: "http://www.slashdot.org",
+                                });
+            } else {
+                print("Can't create box: Text would be out of bounds.");
+            }
+            return true;
+        }
+
         if (newZoneButton === toolBar.clicked(clickedOverlay)) {
             var position = getPositionToCreateEntity();
 

examples/html/entityProperties.html

@@ -468,6 +468,20 @@
                                 elModelAnimationSettings.value = properties.animationSettings;
                                 elModelTextures.value = properties.textures;
                                 elModelOriginalTextures.value = properties.originalTextures;
+                            } else if (properties.type == "Web") {
+                                for (var i = 0; i < elTextSections.length; i++) {
+                                    elTextSections[i].style.display = 'block';
+                                }
+
+                                elTextText.value = properties.text;
+                                elTextLineHeight.value = properties.lineHeight.toFixed(4);
+                                elTextTextColor.style.backgroundColor = "rgb(" + properties.textColor.red  + "," + properties.textColor.green + "," + properties.textColor.blue + ")";
+                                elTextTextColorRed.value = properties.textColor.red;
+                                elTextTextColorGreen.value = properties.textColor.green;
+                                elTextTextColorBlue.value = properties.textColor.blue;
+                                elTextBackgroundColorRed.value = properties.backgroundColor.red;
+                                elTextBackgroundColorGreen.value = properties.backgroundColor.green;
+                                elTextBackgroundColorBlue.value = properties.backgroundColor.blue;
                             } else if (properties.type == "Text") {
                                 for (var i = 0; i < elTextSections.length; i++) {
                                     elTextSections[i].style.display = 'block';
@@ -1019,6 +1033,12 @@
             </div>
         </div>
 
+        <div class="web-section property">
+            <div class="label">Source URL</div>
+            <div class="value">
+                <input type="text" id="property-source-url" class="url"></input>
+            </div>
+        </div>
 
 
         <div class="model-section property">

libraries/entities-renderer/src/EntityTreeRenderer.cpp

@@ -35,6 +35,7 @@
 #include "RenderableParticleEffectEntityItem.h"
 #include "RenderableSphereEntityItem.h"
 #include "RenderableTextEntityItem.h"
+#include "RenderableWebEntityItem.h"
 #include "RenderableZoneEntityItem.h"
 #include "EntitiesRendererLogging.h"
 
@@ -57,6 +58,7 @@ EntityTreeRenderer::EntityTreeRenderer(bool wantScripts, AbstractViewStateInterf
     REGISTER_ENTITY_TYPE_WITH_FACTORY(Sphere, RenderableSphereEntityItem::factory)
     REGISTER_ENTITY_TYPE_WITH_FACTORY(Light, RenderableLightEntityItem::factory)
     REGISTER_ENTITY_TYPE_WITH_FACTORY(Text, RenderableTextEntityItem::factory)
+    REGISTER_ENTITY_TYPE_WITH_FACTORY(Web, RenderableWebEntityItem::factory)
     REGISTER_ENTITY_TYPE_WITH_FACTORY(ParticleEffect, RenderableParticleEffectEntityItem::factory)
     REGISTER_ENTITY_TYPE_WITH_FACTORY(Zone, RenderableZoneEntityItem::factory)
     

libraries/entities-renderer/src/RenderableWebEntityItem.cpp

@@ -0,0 +1,59 @@
+//
+//  Created by Bradley Austin Davis on 2015/05/12
+//  Copyright 2013 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+#include "RenderableWebEntityItem.h"
+
+#include <glm/gtx/quaternion.hpp>
+
+#include <gpu/GPUConfig.h>
+
+#include <DeferredLightingEffect.h>
+#include <GeometryCache.h>
+#include <PerfStat.h>
+#include <TextRenderer.h>
+
+#include "GLMHelpers.h"
+
+const int FIXED_FONT_POINT_SIZE = 40;
+
+EntityItem* RenderableWebEntityItem::factory(const EntityItemID& entityID, const EntityItemProperties& properties) {
+    return new RenderableWebEntityItem(entityID, properties);
+}
+
+void RenderableWebEntityItem::render(RenderArgs* args) {
+    PerformanceTimer perfTimer("RenderableWebEntityItem::render");
+    assert(getType() == EntityTypes::Web);
+    glm::vec3 position = getPosition();
+    glm::vec3 dimensions = getDimensions();
+    glm::vec3 halfDimensions = dimensions / 2.0f;
+    glm::quat rotation = getRotation();
+    float leftMargin = 0.1f;
+    float topMargin = 0.1f;
+
+    //qCDebug(entitytree) << "RenderableWebEntityItem::render() id:" << getEntityItemID() << "text:" << getText();
+
+    glPushMatrix(); 
+    {
+        glTranslatef(position.x, position.y, position.z);
+        glm::vec3 axis = glm::axis(rotation);
+        glRotatef(glm::degrees(glm::angle(rotation)), axis.x, axis.y, axis.z);
+
+        float alpha = 1.0f; //getBackgroundAlpha();
+
+        glm::vec3 topLeft(-halfDimensions.x, -halfDimensions.y, 0);
+        glm::vec3 bottomRight(halfDimensions.x, halfDimensions.y, 0);
+        
+        // TODO: Determine if we want these entities to have the deferred lighting effect? I think we do, so that the color
+        // used for a sphere, or box have the same look as those used on a text entity.
+        DependencyManager::get<DeferredLightingEffect>()->bindSimpleProgram();
+        DependencyManager::get<GeometryCache>()->renderQuad(topLeft, bottomRight, glm::vec4(0, 1, 0, alpha));
+        DependencyManager::get<DeferredLightingEffect>()->releaseSimpleProgram();
+    } 
+    glPopMatrix();
+}
+

libraries/entities-renderer/src/RenderableWebEntityItem.h

@@ -0,0 +1,26 @@
+//
+//  Created by Bradley Austin Davis on 2015/05/12
+//  Copyright 2013 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+#ifndef hifi_RenderableWebEntityItem_h
+#define hifi_RenderableWebEntityItem_h
+
+#include <WebEntityItem.h>
+
+class RenderableWebEntityItem : public WebEntityItem  {
+public:
+    static EntityItem* factory(const EntityItemID& entityID, const EntityItemProperties& properties);
+
+    RenderableWebEntityItem(const EntityItemID& entityItemID, const EntityItemProperties& properties) :
+        WebEntityItem(entityItemID, properties)
+        { }
+
+    virtual void render(RenderArgs* args);
+};
+
+
+#endif // hifi_RenderableWebEntityItem_h

libraries/entities/src/EntityItemProperties.h

@@ -52,6 +52,7 @@ class EntityItemProperties {
     friend class TextEntityItem; // TODO: consider removing this friend relationship and use public methods
     friend class ParticleEffectEntityItem; // TODO: consider removing this friend relationship and use public methods
     friend class ZoneEntityItem; // TODO: consider removing this friend relationship and use public methods
+    friend class WebEntityItem; // TODO....  
 public:
     EntityItemProperties();
     virtual ~EntityItemProperties();

libraries/entities/src/EntityPropertyFlags.h

@@ -148,6 +148,10 @@ enum EntityPropertyList {
     PROP_SKYBOX_URL = PROP_ANIMATION_FPS,
     PROP_STAGE_AUTOMATIC_HOURDAY = PROP_ANIMATION_FRAME_INDEX,
 
+    // Aliases/Piggyback properties for Web. These properties intentionally reuse the enum values for
+    // other properties which will never overlap with each other. 
+    PROP_SOURCE_URL = PROP_MODEL_URL,
+
     // WARNING!!! DO NOT ADD PROPS_xxx here unless you really really meant to.... Add them UP above
 };
 

libraries/entities/src/EntityTypes.cpp

@@ -24,6 +24,7 @@
 #include "ParticleEffectEntityItem.h"
 #include "SphereEntityItem.h"
 #include "TextEntityItem.h"
+#include "WebEntityItem.h"
 #include "ZoneEntityItem.h"
 
 QMap<EntityTypes::EntityType, QString> EntityTypes::_typeToNameMap;
@@ -36,6 +37,7 @@ const QString ENTITY_TYPE_NAME_UNKNOWN = "Unknown";
 // Register Entity the default implementations of entity types here...
 REGISTER_ENTITY_TYPE(Model)
 REGISTER_ENTITY_TYPE(Box)
+REGISTER_ENTITY_TYPE(Web)
 REGISTER_ENTITY_TYPE(Sphere)
 REGISTER_ENTITY_TYPE(Light)
 REGISTER_ENTITY_TYPE(Text)

libraries/entities/src/EntityTypes.h

@@ -30,13 +30,14 @@ class EntityTypes {
 public:
     typedef enum EntityType_t {
         Unknown,
-        Model,
         Box,
-        Sphere,
         Light,
+        Model,
+        ParticleEffect,
+        Sphere,
         Text,
-		ParticleEffect,
+        Web,
-		Zone,
+        Zone,
         LAST = Zone
     } EntityType;
 

libraries/entities/src/WebEntityItem.cpp

@@ -0,0 +1,145 @@
+//
+//  Created by Bradley Austin Davis on 2015/05/12
+//  Copyright 2013 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+#include "WebEntityItem.h"
+
+#include <glm/gtx/transform.hpp>
+
+#include <QDebug>
+
+#include <ByteCountCoding.h>
+#include <PlaneShape.h>
+
+#include "EntityTree.h"
+#include "EntityTreeElement.h"
+#include "EntitiesLogging.h"
+
+
+const QString WebEntityItem::DEFAULT_SOURCE_URL("http://www.google.com");
+
+EntityItem* WebEntityItem::factory(const EntityItemID& entityID, const EntityItemProperties& properties) {
+    EntityItem* result = new WebEntityItem(entityID, properties);
+    return result;
+}
+
+WebEntityItem::WebEntityItem(const EntityItemID& entityItemID, const EntityItemProperties& properties) :
+        EntityItem(entityItemID) 
+{
+    _type = EntityTypes::Web;
+    _created = properties.getCreated();
+    setProperties(properties);
+}
+
+const float WEB_ENTITY_ITEM_FIXED_DEPTH = 0.01f;
+
+void WebEntityItem::setDimensions(const glm::vec3& value) {
+    // NOTE: Web Entities always have a "depth" of 1cm.
+    _dimensions = glm::vec3(value.x, value.y, TEXT_ENTITY_ITEM_FIXED_DEPTH); 
+}
+
+EntityItemProperties WebEntityItem::getProperties() const {
+    EntityItemProperties properties = EntityItem::getProperties(); // get the properties from our base class
+    COPY_ENTITY_PROPERTY_TO_PROPERTIES(modelURL, getSource);
+    return properties;
+}
+
+bool WebEntityItem::setProperties(const EntityItemProperties& properties) {
+    bool somethingChanged = false;
+    somethingChanged = EntityItem::setProperties(properties); // set the properties in our base class
+
+    SET_ENTITY_PROPERTY_FROM_PROPERTIES(modelURL, setSource);
+
+    if (somethingChanged) {
+        bool wantDebug = false;
+        if (wantDebug) {
+            uint64_t now = usecTimestampNow();
+            int elapsed = now - getLastEdited();
+            qCDebug(entities) << "WebEntityItem::setProperties() AFTER update... edited AGO=" << elapsed <<
+                    "now=" << now << " getLastEdited()=" << getLastEdited();
+        }
+        setLastEdited(properties._lastEdited);
+    }
+    
+    return somethingChanged;
+}
+
+int WebEntityItem::readEntitySubclassDataFromBuffer(const unsigned char* data, int bytesLeftToRead,
+                                                ReadBitstreamToTreeParams& args,
+                                                EntityPropertyFlags& propertyFlags, bool overwriteLocalData) {
+
+    int bytesRead = 0;
+    const unsigned char* dataAt = data;
+
+    READ_ENTITY_PROPERTY_STRING(PROP_SOURCE_URL, setSource);
+
+    return bytesRead;
+}
+
+
+// TODO: eventually only include properties changed since the params.lastViewFrustumSent time
+EntityPropertyFlags WebEntityItem::getEntityProperties(EncodeBitstreamParams& params) const {
+    EntityPropertyFlags requestedProperties = EntityItem::getEntityProperties(params);
+    requestedProperties += PROP_SOURCE_URL;
+    return requestedProperties;
+}
+
+void WebEntityItem::appendSubclassData(OctreePacketData* packetData, EncodeBitstreamParams& params,
+                                    EntityTreeElementExtraEncodeData* modelTreeElementExtraEncodeData,
+                                    EntityPropertyFlags& requestedProperties,
+                                    EntityPropertyFlags& propertyFlags,
+                                    EntityPropertyFlags& propertiesDidntFit,
+                                    int& propertyCount, 
+                                    OctreeElement::AppendState& appendState) const { 
+
+    bool successPropertyFits = true;
+    APPEND_ENTITY_PROPERTY(PROP_SOURCE_URL, appendValue, _source);
+}
+
+
+bool WebEntityItem::findDetailedRayIntersection(const glm::vec3& origin, const glm::vec3& direction,
+                     bool& keepSearching, OctreeElement*& element, float& distance, BoxFace& face, 
+                     void** intersectedObject, bool precisionPicking) const {
+                     
+    RayIntersectionInfo rayInfo;
+    rayInfo._rayStart = origin;
+    rayInfo._rayDirection = direction;
+    rayInfo._rayLength = std::numeric_limits<float>::max();
+
+    PlaneShape plane;
+
+    const glm::vec3 UNROTATED_NORMAL(0.0f, 0.0f, -1.0f);
+    glm::vec3 normal = _rotation * UNROTATED_NORMAL;
+    plane.setNormal(normal);
+    plane.setPoint(getPosition()); // the position is definitely a point on our plane
+
+    bool intersects = plane.findRayIntersection(rayInfo);
+
+    if (intersects) {
+        glm::vec3 hitAt = origin + (direction * rayInfo._hitDistance);
+        // now we know the point the ray hit our plane
+
+        glm::mat4 rotation = glm::mat4_cast(getRotation());
+        glm::mat4 translation = glm::translate(getPosition());
+        glm::mat4 entityToWorldMatrix = translation * rotation;
+        glm::mat4 worldToEntityMatrix = glm::inverse(entityToWorldMatrix);
+
+        glm::vec3 dimensions = getDimensions();
+        glm::vec3 registrationPoint = getRegistrationPoint();
+        glm::vec3 corner = -(dimensions * registrationPoint);
+        AABox entityFrameBox(corner, dimensions);
+
+        glm::vec3 entityFrameHitAt = glm::vec3(worldToEntityMatrix * glm::vec4(hitAt, 1.0f));
+        
+        intersects = entityFrameBox.contains(entityFrameHitAt);
+    }
+
+    if (intersects) {
+        distance = rayInfo._hitDistance;
+    }
+    return intersects;
+}

libraries/entities/src/WebEntityItem.h

@@ -0,0 +1,59 @@
+//
+//  Created by Bradley Austin Davis on 2015/05/12
+//  Copyright 2013 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+#ifndef hifi_WebEntityItem_h
+#define hifi_WebEntityItem_h
+
+#include "EntityItem.h" 
+
+class WebEntityItem : public EntityItem {
+public:
+    static const QString DEFAULT_SOURCE_URL;
+
+    static EntityItem* factory(const EntityItemID& entityID, const EntityItemProperties& properties);
+
+    WebEntityItem(const EntityItemID& entityItemID, const EntityItemProperties& properties);
+    
+    ALLOW_INSTANTIATION // This class can be instantiated
+
+    /// set dimensions in domain scale units (0.0 - 1.0) this will also reset radius appropriately
+    virtual void setDimensions(const glm::vec3& value);
+    virtual ShapeType getShapeType() const { return SHAPE_TYPE_BOX; }
+    
+    // methods for getting/setting all properties of an entity
+    virtual EntityItemProperties getProperties() const;
+    virtual bool setProperties(const EntityItemProperties& properties);
+
+    // TODO: eventually only include properties changed since the params.lastViewFrustumSent time
+    virtual EntityPropertyFlags getEntityProperties(EncodeBitstreamParams& params) const;
+
+    virtual void appendSubclassData(OctreePacketData* packetData, EncodeBitstreamParams& params, 
+                                    EntityTreeElementExtraEncodeData* modelTreeElementExtraEncodeData,
+                                    EntityPropertyFlags& requestedProperties,
+                                    EntityPropertyFlags& propertyFlags,
+                                    EntityPropertyFlags& propertiesDidntFit,
+                                    int& propertyCount, 
+                                    OctreeElement::AppendState& appendState) const;
+
+    virtual int readEntitySubclassDataFromBuffer(const unsigned char* data, int bytesLeftToRead, 
+                                                ReadBitstreamToTreeParams& args,
+                                                EntityPropertyFlags& propertyFlags, bool overwriteLocalData);
+
+    virtual bool supportsDetailedRayIntersection() const { return true; }
+    virtual bool findDetailedRayIntersection(const glm::vec3& origin, const glm::vec3& direction,
+                         bool& keepSearching, OctreeElement*& element, float& distance, BoxFace& face, 
+                         void** intersectedObject, bool precisionPicking) const;
+
+    void setSourceUrl(const QString& value) { _sourceUrl = value; }
+    const QString& getSource() const { return _sourceUrl; }
+
+protected:
+    QString _sourceUrl;
+};
+
+#endif // hifi_WebEntityItem_h

libraries/ui/src/OffscreenUi.cpp

@@ -24,30 +24,10 @@ Q_LOGGING_CATEGORY(offscreenFocus, "hifi.offscreen.focus")
 // achieve.
 static const int SMALL_INTERVAL = 5;
 
-class OffscreenUiRoot : public QQuickItem {
+OffscreenQmlSurface::OffscreenQmlSurface() {
-    Q_OBJECT
-public:
-
-    OffscreenUiRoot(QQuickItem* parent = 0);
-    Q_INVOKABLE void information(const QString& title, const QString& text);
-    Q_INVOKABLE void loadChild(const QUrl& url) {
-        DependencyManager::get<OffscreenUi>()->load(url);
-    }
-};
-
-
-OffscreenUiRoot::OffscreenUiRoot(QQuickItem* parent) : QQuickItem(parent) {
 }
 
-void OffscreenUiRoot::information(const QString& title, const QString& text) {
+OffscreenQmlSurface::~OffscreenQmlSurface() {
-    OffscreenUi::information(title, text);
-}
-
-OffscreenUi::OffscreenUi() {
-    ::qmlRegisterType<OffscreenUiRoot>("Hifi", 1, 0, "Root");
-}
-
-OffscreenUi::~OffscreenUi() {
     // Make sure the context is current while doing cleanup. Note that we use the
     // offscreen surface here because passing 'this' at this point is not safe: the
     // underlying platform window may already be destroyed. To avoid all the trouble, use
@@ -65,7 +45,7 @@ OffscreenUi::~OffscreenUi() {
     doneCurrent();
 }
 
-void OffscreenUi::create(QOpenGLContext* shareContext) {
+void OffscreenQmlSurface::create(QOpenGLContext* shareContext) {
     OffscreenGlCanvas::create(shareContext);
 
     makeCurrent();
@@ -87,13 +67,13 @@ void OffscreenUi::create(QOpenGLContext* shareContext) {
     // a timer with a small interval is used to get better performance.
     _updateTimer.setSingleShot(true);
     _updateTimer.setInterval(SMALL_INTERVAL);
-    connect(&_updateTimer, &QTimer::timeout, this, &OffscreenUi::updateQuick);
+    connect(&_updateTimer, &QTimer::timeout, this, &OffscreenQmlSurface::updateQuick);
 
     // Now hook up the signals. For simplicy we don't differentiate between
     // renderRequested (only render is needed, no sync) and sceneChanged (polish and sync
     // is needed too).
-    connect(_renderControl, &QQuickRenderControl::renderRequested, this, &OffscreenUi::requestRender);
+    connect(_renderControl, &QQuickRenderControl::renderRequested, this, &OffscreenQmlSurface::requestRender);
-    connect(_renderControl, &QQuickRenderControl::sceneChanged, this, &OffscreenUi::requestUpdate);
+    connect(_renderControl, &QQuickRenderControl::sceneChanged, this, &OffscreenQmlSurface::requestUpdate);
 
 #ifdef DEBUG
     connect(_quickWindow, &QQuickWindow::focusObjectChanged, [this]{
@@ -110,11 +90,7 @@ void OffscreenUi::create(QOpenGLContext* shareContext) {
     _renderControl->initialize(&_context);
 }
 
-void OffscreenUi::addImportPath(const QString& path) {
+void OffscreenQmlSurface::resize(const QSize& newSize) {
-    _qmlEngine->addImportPath(path);
-}
-
-void OffscreenUi::resize(const QSize& newSize) {
     makeCurrent();
 
     qreal pixelRatio = _renderControl->_renderWindow ? _renderControl->_renderWindow->devicePixelRatio() : 1.0;
@@ -141,15 +117,15 @@ void OffscreenUi::resize(const QSize& newSize) {
     doneCurrent();
 }
 
-QQuickItem* OffscreenUi::getRootItem() {
+QQuickItem* OffscreenQmlSurface::getRootItem() {
     return _rootItem;
 }
 
-void OffscreenUi::setBaseUrl(const QUrl& baseUrl) {
+void OffscreenQmlSurface::setBaseUrl(const QUrl& baseUrl) {
     _qmlEngine->setBaseUrl(baseUrl);
 }
 
-QObject* OffscreenUi::load(const QUrl& qmlSource, std::function<void(QQmlContext*, QObject*)> f) {
+QObject* OffscreenQmlSurface::load(const QUrl& qmlSource, std::function<void(QQmlContext*, QObject*)> f) {
     _qmlComponent->loadUrl(qmlSource);
     if (_qmlComponent->isLoading()) {
         connect(_qmlComponent, &QQmlComponent::statusChanged, this, 
@@ -162,20 +138,20 @@ QObject* OffscreenUi::load(const QUrl& qmlSource, std::function<void(QQmlContext
     return finishQmlLoad(f);
 }
 
-void OffscreenUi::requestUpdate() {
+void OffscreenQmlSurface::requestUpdate() {
     _polish = true;
     if (!_updateTimer.isActive()) {
         _updateTimer.start();
     }
 }
 
-void OffscreenUi::requestRender() {
+void OffscreenQmlSurface::requestRender() {
     if (!_updateTimer.isActive()) {
         _updateTimer.start();
     }
 }
 
-QObject* OffscreenUi::finishQmlLoad(std::function<void(QQmlContext*, QObject*)> f) {
+QObject* OffscreenQmlSurface::finishQmlLoad(std::function<void(QQmlContext*, QObject*)> f) {
     disconnect(_qmlComponent, &QQmlComponent::statusChanged, this, 0);
     if (_qmlComponent->isError()) {
         QList<QQmlError> errorList = _qmlComponent->errors();
@@ -232,7 +208,7 @@ QObject* OffscreenUi::finishQmlLoad(std::function<void(QQmlContext*, QObject*)>
 }
 
 
-void OffscreenUi::updateQuick() {
+void OffscreenQmlSurface::updateQuick() {
     if (_paused) {
         return;
     }
@@ -274,7 +250,7 @@ void OffscreenUi::updateQuick() {
     emit textureUpdated(fbo->texture());
 }
 
-QPointF OffscreenUi::mapWindowToUi(const QPointF& sourcePosition, QObject* sourceObject) {
+QPointF OffscreenQmlSurface::mapWindowToUi(const QPointF& sourcePosition, QObject* sourceObject) {
     vec2 sourceSize;
     if (dynamic_cast<QWidget*>(sourceObject)) {
         sourceSize = toGlm(((QWidget*)sourceObject)->size());
@@ -297,7 +273,7 @@ QPointF OffscreenUi::mapWindowToUi(const QPointF& sourcePosition, QObject* sourc
 bool OffscreenUi::shouldSwallowShortcut(QEvent* event) {
     Q_ASSERT(event->type() == QEvent::ShortcutOverride);
     QObject* focusObject = _quickWindow->focusObject();
-    if (focusObject != _quickWindow && focusObject != _rootItem) {
+    if (focusObject != _quickWindow && focusObject != getRootItem()) {
         //qDebug() << "Swallowed shortcut " << static_cast<QKeyEvent*>(event)->key();
         event->accept();
         return true;
@@ -310,7 +286,7 @@ bool OffscreenUi::shouldSwallowShortcut(QEvent* event) {
 // Event handling customization
 //
 
-bool OffscreenUi::eventFilter(QObject* originalDestination, QEvent* event) {
+bool OffscreenQmlSurface::eventFilter(QObject* originalDestination, QEvent* event) {
     // Only intercept events while we're in an active state
     if (_paused) {
         return false;
@@ -389,37 +365,65 @@ bool OffscreenUi::eventFilter(QObject* originalDestination, QEvent* event) {
     return false;
 }
 
-void OffscreenUi::lockTexture(int texture) {
+void OffscreenQmlSurface::lockTexture(int texture) {
     _fboCache.lockTexture(texture);
 }
 
-void OffscreenUi::releaseTexture(int texture) {
+void OffscreenQmlSurface::releaseTexture(int texture) {
     _fboCache.releaseTexture(texture);
 }
 
-void OffscreenUi::pause() {
+void OffscreenQmlSurface::pause() {
     _paused = true;
 }
 
-void OffscreenUi::resume() {
+void OffscreenQmlSurface::resume() {
     _paused = false;
     requestRender();
 }
 
-bool OffscreenUi::isPaused() const {
+bool OffscreenQmlSurface::isPaused() const {
     return _paused;
 }
 
-void OffscreenUi::setProxyWindow(QWindow* window) {
+void OffscreenQmlSurface::setProxyWindow(QWindow* window) {
     _renderControl->_renderWindow = window;
 }
 
+
+class OffscreenUiRoot : public QQuickItem {
+    Q_OBJECT
+public:
+
+    OffscreenUiRoot(QQuickItem* parent = 0);
+    Q_INVOKABLE void information(const QString& title, const QString& text);
+    Q_INVOKABLE void loadChild(const QUrl& url) {
+        DependencyManager::get<OffscreenUi>()->load(url);
+    }
+};
+
+
+OffscreenUiRoot::OffscreenUiRoot(QQuickItem* parent) : QQuickItem(parent) {
+}
+
+void OffscreenUiRoot::information(const QString& title, const QString& text) {
+    OffscreenUi::information(title, text);
+}
+
+OffscreenUi::OffscreenUi() {
+    ::qmlRegisterType<OffscreenUiRoot>("Hifi", 1, 0, "Root");
+}
+
+OffscreenUi::~OffscreenUi() {
+}
+
+
 void OffscreenUi::show(const QUrl& url, const QString& name, std::function<void(QQmlContext*, QObject*)> f) {
-    QQuickItem* item = _rootItem->findChild<QQuickItem*>(name);
+    QQuickItem* item = getRootItem()->findChild<QQuickItem*>(name);
     // First load?
     if (!item) {
         load(url, f);
-        item = _rootItem->findChild<QQuickItem*>(name); 
+        item = getRootItem()->findChild<QQuickItem*>(name);
     }
     if (item) {
         item->setEnabled(true);
@@ -427,11 +431,11 @@ void OffscreenUi::show(const QUrl& url, const QString& name, std::function<void(
 }
 
 void OffscreenUi::toggle(const QUrl& url, const QString& name, std::function<void(QQmlContext*, QObject*)> f) {
-    QQuickItem* item = _rootItem->findChild<QQuickItem*>(name);
+    QQuickItem* item = getRootItem()->findChild<QQuickItem*>(name);
     // First load?
     if (!item) {
         load(url, f);
-        item = _rootItem->findChild<QQuickItem*>(name);
+        item = getRootItem()->findChild<QQuickItem*>(name);
     }
     if (item) {
         item->setEnabled(!item->isEnabled());

libraries/ui/src/OffscreenUi.h

@@ -96,9 +96,9 @@ private:
         offscreenUi->load(QML, f); \
     } 
 
-class OffscreenUi : public OffscreenGlCanvas, public Dependency {
+class OffscreenQmlSurface : public OffscreenGlCanvas {
     Q_OBJECT
-
+protected:
     class QMyQuickRenderControl : public QQuickRenderControl {
     protected:
         QWindow* renderWindow(QPoint* offset) Q_DECL_OVERRIDE{
@@ -113,36 +113,76 @@ class OffscreenUi : public OffscreenGlCanvas, public Dependency {
 
     private:
         QWindow* _renderWindow{ nullptr };
-        friend class OffscreenUi;
+        friend class OffscreenQmlSurface;
     };
-
 public:
+    OffscreenQmlSurface();
+    virtual ~OffscreenQmlSurface();
+
     using MouseTranslator = std::function<QPointF(const QPointF&)>;
-    OffscreenUi();
+
-    virtual ~OffscreenUi();
     void create(QOpenGLContext* context);
     void resize(const QSize& size);
     QObject* load(const QUrl& qmlSource, std::function<void(QQmlContext*, QObject*)> f = [](QQmlContext*, QObject*) {});
     QObject* load(const QString& qmlSourceFile, std::function<void(QQmlContext*, QObject*)> f = [](QQmlContext*, QObject*) {}) {
         return load(QUrl(qmlSourceFile), f);
     }
-    void show(const QUrl& url, const QString& name, std::function<void(QQmlContext*, QObject*)> f = [](QQmlContext*, QObject*) {});
+
-    void toggle(const QUrl& url, const QString& name, std::function<void(QQmlContext*, QObject*)> f = [](QQmlContext*, QObject*) {});
+    // Optional values for event handling
-    void setBaseUrl(const QUrl& baseUrl);
-    void addImportPath(const QString& path);
-    //QQmlContext* getQmlContext();
-    QQuickItem* getRootItem();
-    void pause();
-    void resume();
-    bool isPaused() const;
     void setProxyWindow(QWindow* window);
-    bool shouldSwallowShortcut(QEvent* event);
-    QPointF mapWindowToUi(const QPointF& sourcePosition, QObject* sourceObject);
-    virtual bool eventFilter(QObject* originalDestination, QEvent* event);
     void setMouseTranslator(MouseTranslator mouseTranslator) {
         _mouseTranslator = mouseTranslator;
     }
 
+    void pause();
+    void resume();
+    bool isPaused() const;
+
+    void setBaseUrl(const QUrl& baseUrl);
+    QQuickItem* getRootItem();
+
+    virtual bool eventFilter(QObject* originalDestination, QEvent* event);
+
+signals:
+    void textureUpdated(GLuint texture);
+
+public slots:
+    void requestUpdate();
+    void requestRender();
+    void lockTexture(int texture);
+    void releaseTexture(int texture);
+
+private:
+    QObject* finishQmlLoad(std::function<void(QQmlContext*, QObject*)> f);
+    QPointF mapWindowToUi(const QPointF& sourcePosition, QObject* sourceObject);
+
+private slots:
+    void updateQuick();
+
+protected:
+    QQuickWindow* _quickWindow{ nullptr };
+
+private:
+    QMyQuickRenderControl* _renderControl{ new QMyQuickRenderControl };
+    QQmlEngine* _qmlEngine{ nullptr };
+    QQmlComponent* _qmlComponent{ nullptr };
+    QQuickItem* _rootItem{ nullptr };
+    QTimer _updateTimer;
+    FboCache _fboCache;
+    bool _polish{ true };
+    bool _paused{ true };
+    MouseTranslator _mouseTranslator{ [](const QPointF& p) { return p;  } };
+};
+
+class OffscreenUi : public OffscreenQmlSurface, public Dependency {
+    Q_OBJECT
+
+public:
+    OffscreenUi();
+    virtual ~OffscreenUi();
+    void show(const QUrl& url, const QString& name, std::function<void(QQmlContext*, QObject*)> f = [](QQmlContext*, QObject*) {});
+    void toggle(const QUrl& url, const QString& name, std::function<void(QQmlContext*, QObject*)> f = [](QQmlContext*, QObject*) {});
+    bool shouldSwallowShortcut(QEvent* event);
 
     // Messagebox replacement functions
     using ButtonCallback = std::function<void(QMessageBox::StandardButton)>;
@@ -168,33 +208,6 @@ public:
     static void critical(const QString& title, const QString& text,
         ButtonCallback callback = NO_OP_CALLBACK,
         QMessageBox::StandardButtons buttons = QMessageBox::Ok);
-
-private:
-    QObject* finishQmlLoad(std::function<void(QQmlContext*, QObject*)> f);
-
-private slots:
-    void updateQuick();
-
-public slots:
-    void requestUpdate();
-    void requestRender();
-    void lockTexture(int texture);
-    void releaseTexture(int texture);
-
-signals:
-    void textureUpdated(GLuint texture);
-
-private:
-    QMyQuickRenderControl* _renderControl{ new QMyQuickRenderControl };
-    QQuickWindow* _quickWindow{ nullptr };
-    QQmlEngine* _qmlEngine{ nullptr };
-    QQmlComponent* _qmlComponent{ nullptr };
-    QQuickItem* _rootItem{ nullptr };
-    QTimer _updateTimer;
-    FboCache _fboCache;
-    bool _polish{ true };
-    bool _paused{ true };
-    MouseTranslator _mouseTranslator{ [](const QPointF& p) { return p;  } };
 };
 
 #endif