QmlDesigner: Larger canvas size

Many qml documents have items outside of the root item area. The scene
rectangle is now much bigger so you can scroll the items around.

src/plugins/qmldesigner/components/formeditor/formeditorgraphicsview.cpp

@@ -46,6 +46,7 @@ FormEditorGraphicsView::FormEditorGraphicsView(QWidget *parent) :
 {
     setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
     setResizeAnchor(QGraphicsView::AnchorViewCenter);
+    setAlignment(Qt::AlignCenter);
     setCacheMode(QGraphicsView::CacheNone);
 //    setCacheMode(QGraphicsView::CacheBackground);
     setViewportUpdateMode(QGraphicsView::SmartViewportUpdate);

src/plugins/qmldesigner/components/formeditor/formeditorscene.cpp

@@ -36,6 +36,10 @@
 #include "formeditorwidget.h"
 #include "formeditoritem.h"
 #include "movemanipulator.h"
+#include "qmldesignerplugin.h"
+#include "designersettings.h"
+
+
 #include <metainfo.h>
 #include <QGraphicsSceneDragDropEvent>
 
@@ -60,18 +64,13 @@ namespace QmlDesigner {
 FormEditorScene::FormEditorScene(FormEditorWidget *view, FormEditorView *editorView)
         : QGraphicsScene(),
         m_editorView(editorView),
-        m_formLayerItem(new LayerItem(this)),
-        m_manipulatorLayerItem(new LayerItem(this)),
         m_paintMode(NormalMode),
         m_showBoundingRects(true)
 {
-    m_manipulatorLayerItem->setZValue(1.0);
-    m_formLayerItem->setZValue(0.0);
-    m_formLayerItem->setFlag(QGraphicsItem::ItemClipsChildrenToShape, false);
+    setupScene();
     view->setScene(this);
     setItemIndexMethod(QGraphicsScene::NoIndex);
-
-//    setItemIndexMethod(QGraphicsScene::NoIndex);
+    setSceneRect(-canvasWidth()/2., -canvasHeight()/2., canvasWidth(), canvasHeight());
 }
 
 FormEditorScene::~FormEditorScene()
@@ -81,12 +80,40 @@ FormEditorScene::~FormEditorScene()
 }
 
 
+void FormEditorScene::setupScene()
+{
+    m_formLayerItem = new LayerItem(this);
+    qDebug() << "formLayerItem" << m_formLayerItem.data();
+    m_manipulatorLayerItem = new LayerItem(this);
+    qDebug() << "manipulatorLayerItem" << m_manipulatorLayerItem.data();
+    m_manipulatorLayerItem->setZValue(1.0);
+    m_formLayerItem->setZValue(0.0);
+    m_formLayerItem->setFlag(QGraphicsItem::ItemClipsChildrenToShape, false);
+}
+
+void FormEditorScene::resetScene()
+{
+    foreach(QGraphicsItem *item, m_manipulatorLayerItem->childItems())
+       removeItem(item);
+}
+
 FormEditorItem* FormEditorScene::itemForQmlItemNode(const QmlItemNode &qmlItemNode) const
 {
     Q_ASSERT(hasItemForQmlItemNode(qmlItemNode));
     return m_qmlItemNodeItemHash.value(qmlItemNode);
 }
 
+double FormEditorScene::canvasWidth() const
+{
+    DesignerSettings settings = Internal::BauhausPlugin::pluginInstance()->settings();
+    return settings.canvasWidth;
+}
+
+double FormEditorScene::canvasHeight() const
+{
+    DesignerSettings settings = Internal::BauhausPlugin::pluginInstance()->settings();
+    return settings.canvasHeight;
+}
 
 QList<FormEditorItem*> FormEditorScene::itemsForQmlItemNodes(const QList<QmlItemNode> &nodeList) const
 {

src/plugins/qmldesigner/components/formeditor/formeditorscene.h

@@ -76,6 +76,12 @@ public:
 
     void updateAllFormEditorItems();
 
+    void setupScene();
+    void resetScene();
+
+    double canvasWidth() const;
+    double canvasHeight() const;
+
     bool hasItemForQmlItemNode(const QmlItemNode &qmlItemNode) const;
 
     void synchronizeTransformation(const QmlItemNode &qmlItemNode);

src/plugins/qmldesigner/components/formeditor/formeditorview.cpp

@@ -147,6 +147,8 @@ void FormEditorView::modelAboutToBeDetached(Model *model)
     m_dragTool->clear();
     m_scene->clearFormEditorItems();
     m_formEditorWidget->updateActions();
+    m_formEditorWidget->resetView();
+    scene()->resetScene();
 
     QmlModelView::modelAboutToBeDetached(model);
 }
@@ -451,6 +453,8 @@ void FormEditorView::instancesCompleted(const QVector<ModelNode> &completedNodeL
         if (qmlItemNode.isValid() && scene()->hasItemForQmlItemNode(qmlItemNode)) {
             scene()->synchronizeParent(qmlItemNode);
             itemNodeList.append(scene()->itemForQmlItemNode(qmlItemNode));
+            if (qmlItemNode.isRootModelNode())
+                m_formEditorWidget->centerScene();
         }
     }
     currentTool()->instancesCompleted(itemNodeList);

src/plugins/qmldesigner/components/formeditor/formeditorwidget.cpp

@@ -244,6 +244,17 @@ void FormEditorWidget::updateActions()
     }
 }
 
+
+void FormEditorWidget::resetView()
+{
+    setRootItemRect(QRectF());
+}
+
+void FormEditorWidget::centerScene()
+{
+    m_graphicsView->centerOn(rootItemRect().center());
+}
+
 ZoomAction *FormEditorWidget::zoomAction() const
 {
     return m_zoomAction.data();

src/plugins/qmldesigner/components/formeditor/formeditorwidget.h

@@ -80,6 +80,10 @@ public:
 
     void updateActions();
 
+    void resetView();
+    void centerScene();
+
+
 protected:
     void enterEvent(QEvent *event);
     void wheelEvent(QWheelEvent *event);

src/plugins/qmldesigner/designersettings.cpp

@@ -41,7 +41,9 @@ using namespace QmlDesigner;
 DesignerSettings::DesignerSettings()
     : openDesignMode(QmlDesigner::Constants::QML_OPENDESIGNMODE_DEFAULT),
     itemSpacing(0),
-    snapMargin(0)
+    snapMargin(0),
+    canvasWidth(10000),
+    canvasHeight(10000)
 {}
 
 void DesignerSettings::fromSettings(QSettings *settings)
@@ -55,6 +57,8 @@ void DesignerSettings::fromSettings(QSettings *settings)
             QLatin1String(QmlDesigner::Constants::QML_ITEMSPACING_KEY), QVariant(0)).toInt();
     snapMargin = settings->value(
             QLatin1String(QmlDesigner::Constants::QML_SNAPMARGIN_KEY), QVariant(0)).toInt();
+    canvasWidth = settings->value(QLatin1String(QmlDesigner::Constants::QML_CANVASWIDTH_KEY), QVariant(10000)).toInt();
+    canvasHeight = settings->value(QLatin1String(QmlDesigner::Constants::QML_CANVASHEIGHT_KEY), QVariant(10000)).toInt();
     settings->endGroup();
     settings->endGroup();
 }
@@ -66,7 +70,8 @@ void DesignerSettings::toSettings(QSettings *settings) const
     settings->setValue(QLatin1String(QmlDesigner::Constants::QML_OPENDESIGNMODE_SETTINGS_KEY), openDesignMode);
     settings->setValue(QLatin1String(QmlDesigner::Constants::QML_ITEMSPACING_KEY), itemSpacing);
     settings->setValue(QLatin1String(QmlDesigner::Constants::QML_SNAPMARGIN_KEY), snapMargin);
-
+    settings->setValue(QLatin1String(QmlDesigner::Constants::QML_CANVASWIDTH_KEY), canvasWidth);
+    settings->setValue(QLatin1String(QmlDesigner::Constants::QML_CANVASHEIGHT_KEY), canvasHeight);
     settings->endGroup();
     settings->endGroup();
 }
@@ -75,5 +80,6 @@ bool DesignerSettings::equals(const DesignerSettings &other) const
 {
     return openDesignMode == other.openDesignMode
             && snapMargin == other.snapMargin
-            && itemSpacing == other.itemSpacing;
+            && canvasWidth == other.canvasWidth
+            && canvasHeight == other.canvasHeight;
 }

src/plugins/qmldesigner/designersettings.h

@@ -54,6 +54,8 @@ public:
     bool openDesignMode;
     int itemSpacing;
     int snapMargin;    
+    int canvasWidth;
+    int canvasHeight;
 };
 
 inline bool operator==(const DesignerSettings &s1, const DesignerSettings &s2)

src/plugins/qmldesigner/qmldesignerconstants.h

@@ -66,6 +66,8 @@ const char * const QML_DESIGNER_SETTINGS_GROUP = "Designer";
 const char * const QML_OPENDESIGNMODE_SETTINGS_KEY = "OpenDesignMode";
 const char * const QML_ITEMSPACING_KEY = "ItemSpacing";
 const char * const QML_SNAPMARGIN_KEY = "SnapMargin";
+const char * const QML_CANVASWIDTH_KEY = "CanvasWidth";
+const char * const QML_CANVASHEIGHT_KEY = "CanvasHeight";
 const char * const QML_CONTEXTPANE_KEY = "ContextPaneEnabled";
 const char * const QML_CONTEXTPANEPIN_KEY = "ContextPanePinned";
 enum { QML_OPENDESIGNMODE_DEFAULT = 0 }; // 0 for text mode, 1 for design mode

src/plugins/qmldesigner/settingspage.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>296</width>
-    <height>132</height>
+    <width>275</width>
+    <height>275</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -21,7 +21,7 @@
      </property>
      <layout class="QHBoxLayout" name="horizontalLayout">
       <item>
-       <layout class="QGridLayout" name="gridLayout">
+       <layout class="QFormLayout" name="formLayout_2">
         <item row="0" column="0">
          <widget class="QLabel" name="snapMarginLabel">
           <property name="text">
@@ -64,18 +64,70 @@
         </item>
        </layout>
       </item>
+     </layout>
+    </widget>
+   </item>
+   <item>
+    <widget class="QGroupBox" name="groupBox">
+     <property name="title">
+      <string>Canvas</string>
+     </property>
+     <layout class="QHBoxLayout" name="horizontalLayout_2">
       <item>
-       <spacer name="horizontalSpacer">
-        <property name="orientation">
-         <enum>Qt::Horizontal</enum>
-        </property>
-        <property name="sizeHint" stdset="0">
-         <size>
-          <width>40</width>
-          <height>20</height>
-         </size>
-        </property>
-       </spacer>
+       <layout class="QFormLayout" name="formLayout">
+        <item row="0" column="0">
+         <widget class="QLabel" name="canvasWidth">
+          <property name="text">
+           <string>Width</string>
+          </property>
+         </widget>
+        </item>
+        <item row="0" column="1">
+         <widget class="QSpinBox" name="spinBox">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
+          <property name="maximum">
+           <number>100000</number>
+          </property>
+          <property name="singleStep">
+           <number>100</number>
+          </property>
+          <property name="value">
+           <number>10000</number>
+          </property>
+         </widget>
+        </item>
+        <item row="1" column="0">
+         <widget class="QLabel" name="canvasHeight">
+          <property name="text">
+           <string>Height</string>
+          </property>
+         </widget>
+        </item>
+        <item row="1" column="1">
+         <widget class="QSpinBox" name="spinBox_2">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
+          <property name="maximum">
+           <number>100000</number>
+          </property>
+          <property name="singleStep">
+           <number>100</number>
+          </property>
+          <property name="value">
+           <number>10000</number>
+          </property>
+         </widget>
+        </item>
+       </layout>
       </item>
      </layout>
     </widget>
@@ -88,7 +140,7 @@
      <property name="sizeHint" stdset="0">
       <size>
        <width>20</width>
-       <height>207</height>
+       <height>40</height>
       </size>
      </property>
     </spacer>