- Added a Label with elide feature.

git-svn-id: https://openmodelica.org/svn/OpenModelica/trunk@18868 f25d12d1-65f4-0310-ae8a-bbce733d8d8e

OMEdit/OMEditGUI/GUI/Widgets/TransformationsWidget.cpp

@@ -421,16 +421,15 @@ TransformationsWidget::TransformationsWidget(QString infoXMLFullFileName, MainWi
   pReloadToolButton->setIcon(QIcon(":/Resources/icons/refresh.png"));
   connect(pReloadToolButton, SIGNAL(clicked()), SLOT(reloadTransformations()));
   /* info xml file path label */
-  Label *pInfoXMLFilePathLabel = new Label(mInfoXMLFullFileName);
-  pInfoXMLFilePathLabel->setWordWrap(true);
+  ElidedLabel *pInfoXMLFilePathLabel = new ElidedLabel(mInfoXMLFullFileName);
   /* create status bar */
   QStatusBar *pStatusBar = new QStatusBar;
   pStatusBar->setObjectName("ModelStatusBar");
   pStatusBar->setSizeGripEnabled(false);
   pStatusBar->addPermanentWidget(pReloadToolButton, 0);
   pStatusBar->addPermanentWidget(pInfoXMLFilePathLabel, 1);
   /* Variables Heading */
-  Label *pVariablesBrowserLabel = new Label(Helper::variablesBrowser);
+  ElidedLabel *pVariablesBrowserLabel = new ElidedLabel(Helper::variablesBrowser);
   pVariablesBrowserLabel->setObjectName("LabelWithBorder");
   // create the find text box
   mpFindVariablesTextBox = new QLineEdit(Helper::findVariables);
@@ -477,7 +476,7 @@ TransformationsWidget::TransformationsWidget(QString infoXMLFullFileName, MainWi
   QFrame *pVariablesFrame = new QFrame;
   pVariablesFrame->setLayout(pVariablesGridLayout);
   /* Defined in tree widget */
-  Label *pDefinedInLabel = new Label(tr("Defined In Equations"));
+  ElidedLabel *pDefinedInLabel = new ElidedLabel(tr("Defined In Equations"));
   pDefinedInLabel->setObjectName("LabelWithBorder");
   mpDefinedInEquationsTreeWidget = new QTreeWidget;
   mpDefinedInEquationsTreeWidget->setItemDelegate(new ItemDelegate(mpDefinedInEquationsTreeWidget));
@@ -501,7 +500,7 @@ TransformationsWidget::TransformationsWidget(QString infoXMLFullFileName, MainWi
   QFrame *pDefinedInFrame = new QFrame;
   pDefinedInFrame->setLayout(pDefinedInGridLayout);
   /* Used in tree widget  */
-  Label *pUsedInLabel = new Label(tr("Used In Equations"));
+  ElidedLabel *pUsedInLabel = new ElidedLabel(tr("Used In Equations"));
   pUsedInLabel->setObjectName("LabelWithBorder");
   mpUsedInEquationsTreeWidget = new QTreeWidget;
   mpUsedInEquationsTreeWidget->setItemDelegate(new ItemDelegate(mpUsedInEquationsTreeWidget));
@@ -525,7 +524,7 @@ TransformationsWidget::TransformationsWidget(QString infoXMLFullFileName, MainWi
   QFrame *pUsedInFrame = new QFrame;
   pUsedInFrame->setLayout(pUsedInGridLayout);
   /* variable operations tree widget */
-  Label *pOperationsLabel = new Label(tr("Variable Operations"));
+  ElidedLabel *pOperationsLabel = new ElidedLabel(tr("Variable Operations"));
   pOperationsLabel->setObjectName("LabelWithBorder");
   mpVariableOperationsTreeWidget = new QTreeWidget;
   mpVariableOperationsTreeWidget->setItemDelegate(new ItemDelegate(mpVariableOperationsTreeWidget));
@@ -542,7 +541,7 @@ TransformationsWidget::TransformationsWidget(QString infoXMLFullFileName, MainWi
   QFrame *pVariableOperationsFrame = new QFrame;
   pVariableOperationsFrame->setLayout(pVariableOperationsGridLayout);
   /* Equations Heading */
-  Label *pEquationsBrowserLabel = new Label(tr("Equations Browser"));
+  ElidedLabel *pEquationsBrowserLabel = new ElidedLabel(tr("Equations Browser"));
   pEquationsBrowserLabel->setObjectName("LabelWithBorder");
   /* Equations tree widget */
   mpEquationsTreeWidget = new QTreeWidget;
@@ -567,7 +566,7 @@ TransformationsWidget::TransformationsWidget(QString infoXMLFullFileName, MainWi
   QFrame *pEquationsFrame = new QFrame;
   pEquationsFrame->setLayout(pEquationsGridLayout);
   /* defines tree widget */
-  Label *pDefinesLabel = new Label(tr("Defines"));
+  ElidedLabel *pDefinesLabel = new ElidedLabel(tr("Defines"));
   pDefinesLabel->setObjectName("LabelWithBorder");
   mpDefinesVariableTreeWidget = new QTreeWidget;
   mpDefinesVariableTreeWidget->setItemDelegate(new ItemDelegate(mpDefinesVariableTreeWidget));
@@ -588,7 +587,7 @@ TransformationsWidget::TransformationsWidget(QString infoXMLFullFileName, MainWi
   QFrame *pDefinesFrame = new QFrame;
   pDefinesFrame->setLayout(pDefinesGridLayout);
   /* depends tree widget */
-  Label *pDependsLabel = new Label(tr("Depends"));
+  ElidedLabel *pDependsLabel = new ElidedLabel(tr("Depends"));
   pDependsLabel->setObjectName("LabelWithBorder");
   mpDependsVariableTreeWidget = new QTreeWidget;
   mpDependsVariableTreeWidget->setItemDelegate(new ItemDelegate(mpDependsVariableTreeWidget));
@@ -607,7 +606,7 @@ TransformationsWidget::TransformationsWidget(QString infoXMLFullFileName, MainWi
   QFrame *pDependsFrame = new QFrame;
   pDependsFrame->setLayout(pDependsGridLayout);
   /* operations tree widget */
-  Label *pEquationOperationsLabel = new Label(tr("Equation Operations"));
+  ElidedLabel *pEquationOperationsLabel = new ElidedLabel(tr("Equation Operations"));
   pEquationOperationsLabel->setObjectName("LabelWithBorder");
   mpEquationOperationsTreeWidget = new QTreeWidget;
   mpEquationOperationsTreeWidget->setItemDelegate(new ItemDelegate(mpEquationOperationsTreeWidget));
@@ -624,9 +623,9 @@ TransformationsWidget::TransformationsWidget(QString infoXMLFullFileName, MainWi
   QFrame *pEquationOperationsFrame = new QFrame;
   pEquationOperationsFrame->setLayout(pEquationOperationsGridLayout);
   /* TSourceEditor */
-  Label *pTSourceEditorBrowserLabel = new Label(tr("Source Browser"));
+  ElidedLabel *pTSourceEditorBrowserLabel = new ElidedLabel(tr("Source Browser"));
   pTSourceEditorBrowserLabel->setObjectName("LabelWithBorder");
-  mpTSourceEditorFileLabel = new Label;
+  mpTSourceEditorFileLabel = new ElidedLabel("");
   mpTSourceEditorFileLabel->hide();
   mpTSourceEditorInfoBar = new InfoBar(mpMainWindow);
   mpTSourceEditorInfoBar->hide();
@@ -669,7 +668,7 @@ TransformationsWidget::TransformationsWidget(QString infoXMLFullFileName, MainWi
   mpVariablesHorizontalSplitter->setContentsMargins(0, 0, 0, 0);
   mpVariablesHorizontalSplitter->addWidget(pVariablesFrame);
   mpVariablesHorizontalSplitter->addWidget(mpVariablesNestedVerticalSplitter);
-  Label *pVariablesHeadingLabel = new Label(Helper::variables);
+  ElidedLabel *pVariablesHeadingLabel = new ElidedLabel(Helper::variables);
   pVariablesHeadingLabel->setObjectName("LabelWithBorder");
   QVBoxLayout *pVariablesMainLayout = new QVBoxLayout;
   pVariablesMainLayout->setSpacing(1);
@@ -703,7 +702,7 @@ TransformationsWidget::TransformationsWidget(QString infoXMLFullFileName, MainWi
   mpEquationsHorizontalSplitter->setContentsMargins(0, 0, 0, 0);
   mpEquationsHorizontalSplitter->addWidget(pEquationsFrame);
   mpEquationsHorizontalSplitter->addWidget(mpEquationsNestedVerticalSplitter);
-  Label *pEquationsHeadingLabel = new Label(tr("Equations"));
+  ElidedLabel *pEquationsHeadingLabel = new ElidedLabel(tr("Equations"));
   pEquationsHeadingLabel->setObjectName("LabelWithBorder");
   QVBoxLayout *pEquationsMainLayout = new QVBoxLayout;
   pEquationsMainLayout->setSpacing(1);
@@ -1033,7 +1032,7 @@ void TransformationsWidget::fetchVariableData(const QModelIndex &index)
     return;
   QModelIndex modelIndex = mpTVariableTreeProxyModel->mapToSource(index);
   TVariablesTreeItem *pTVariableTreeItem = static_cast<TVariablesTreeItem*>(modelIndex.internalPointer());
-  if (!pTVariableTreeItem)
+  if (!pTVariableTreeItem || pTVariableTreeItem->getChildren().size() != 0)
     return;
 
   OMVariable variable = mpInfoXMLFileHandler->variables.value(pTVariableTreeItem->getVariableName());

OMEdit/OMEditGUI/GUI/Widgets/TransformationsWidget.h

@@ -189,7 +189,7 @@ class TransformationsWidget : public QWidget
   QTreeWidget *mpDefinesVariableTreeWidget;
   QTreeWidget *mpDependsVariableTreeWidget;
   QTreeWidget *mpEquationOperationsTreeWidget;
-  Label *mpTSourceEditorFileLabel;
+  ElidedLabel *mpTSourceEditorFileLabel;
   InfoBar *mpTSourceEditorInfoBar;
   TSourceEditor *mpTSourceEditor;
   QSplitter *mpVariablesNestedHorizontalSplitter;

OMEdit/OMEditGUI/Resources/css/stylesheet.qss

@@ -92,8 +92,7 @@ QToolButton#ShapePointsButton {
   padding: 3px;
 }
 
-QLabel#LabelWithBorder {
+QFrame#LabelWithBorder {
   background-color: qlineargradient(x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #d2d2d2, stop: 1 lightGray);
   border: 1px solid gray;
-  padding: 1px 1px 1px 0px;
 }

OMEdit/OMEditGUI/Util/Utilities.cpp

@@ -52,3 +52,57 @@ MainWindow* MdiArea::getMainWindow()
 {
   return mpMainWindow;
 }
+
+ElidedLabel::ElidedLabel(const QString &text, Qt::TextElideMode elideMode, QWidget *parent)
+  : QFrame(parent), mElideMode(elideMode), elided(false), content(text)
+{
+  setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
+  setMinimumHeight(18); /* set minimum height for single line. */
+}
+
+void ElidedLabel::setText(const QString &newText)
+{
+  content = newText;
+  update();
+}
+
+void ElidedLabel::paintEvent(QPaintEvent *event)
+{
+  QFrame::paintEvent(event);
+  QPainter painter(this);
+  QFontMetrics fontMetrics = painter.fontMetrics();
+  bool didElide = false;
+  int lineSpacing = fontMetrics.lineSpacing();
+  int y = 0;
+  QTextLayout textLayout(content, painter.font());
+  textLayout.beginLayout();
+  forever {
+    QTextLine line = textLayout.createLine();
+    if (!line.isValid())
+      break;
+
+    line.setLineWidth(width());
+    int nextLineY = y + lineSpacing;
+    if (height() >= nextLineY + lineSpacing)
+    {
+      line.draw(&painter, QPoint(0, y));
+      y = nextLineY;
+    }
+    else
+    {
+      QString lastLine = content.mid(line.textStart());
+      QString elidedLastLine = fontMetrics.elidedText(lastLine, mElideMode, width());
+      if (y == 0) y = height() / 6;
+      painter.drawText(QPoint(2, y + fontMetrics.ascent()), elidedLastLine);
+      line = textLayout.createLine();
+      didElide = line.isValid();
+      break;
+    }
+  }
+  textLayout.endLayout();
+  if (didElide != elided)
+  {
+    elided = didElide;
+    emit elisionChanged(didElide);
+  }
+}

OMEdit/OMEditGUI/Util/Utilities.h

@@ -76,6 +76,26 @@ class Label : public QLabel
   void init() {setTextInteractionFlags(Qt::TextSelectableByMouse);}
 };
 
+class ElidedLabel : public QFrame
+{
+  Q_OBJECT
+  Q_PROPERTY(QString text READ text WRITE setText)
+  Q_PROPERTY(bool isElided READ isElided)
+public:
+  ElidedLabel(const QString &text, Qt::TextElideMode elideMode = Qt::ElideMiddle, QWidget *parent = 0);
+  void setText(const QString &text);
+  const QString & text() const { return content; }
+  bool isElided() const { return elided; }
+protected:
+  void paintEvent(QPaintEvent *event);
+signals:
+  void elisionChanged(bool elided);
+private:
+  bool elided;
+  QString content;
+  Qt::TextElideMode mElideMode;
+};
+
 //! @class DoubleSpinBox
 /*! \brief Only keeping this class so that if in future we need to change the way QDoubleSpinBox works then we don't have to change the
  * forms controls again.