Implement automatic text elision in tStandardLabel

theCheeseboard · Oct 18, 2023 · 5d722cf · 5d722cf
1 parent 6a5a3d2
commit 5d722cf
Show file tree

Hide file tree

Showing 2 changed files with 84 additions and 21 deletions.
diff --git a/lib/tstandardlabel.cpp b/lib/tstandardlabel.cpp
@@ -5,10 +5,14 @@
 #include "tstandardlabel.h"
 
 struct tStandardLabelPrivate {
-    tStandardLabel::StandardLabelType type = tStandardLabel::Normal;
+        tStandardLabel::StandardLabelType type = tStandardLabel::Normal;
+
+        QString text;
+        tStandardLabel::ElideMode elideMode = tStandardLabel::ElideRight;
 };
 
-tStandardLabel::tStandardLabel(QWidget* parent) : QLabel(parent) {
+tStandardLabel::tStandardLabel(QWidget* parent) :
+    QLabel(parent) {
     d = new tStandardLabelPrivate();
 }
 
@@ -25,14 +29,55 @@ void tStandardLabel::setType(tStandardLabel::StandardLabelType type) {
 
     QFont font = QApplication::font();
     switch (type) {
-        case Subtitle: {
-            font.setBold(true);
-            font.setCapitalization(QFont::AllUppercase);
-            break;
-        }
+        case Subtitle:
+            {
+                font.setBold(true);
+                font.setCapitalization(QFont::AllUppercase);
+                break;
+            }
         default:
             break;
     }
 
     this->setFont(font);
 }
+
+void tStandardLabel::setText(QString text) {
+    d->text = text;
+    this->updateText();
+}
+
+QString tStandardLabel::text() {
+    return d->text;
+}
+
+void tStandardLabel::setElideMode(ElideMode elideMode) {
+    d->elideMode = elideMode;
+}
+
+tStandardLabel::ElideMode tStandardLabel::elideMode() {
+    return d->elideMode;
+}
+
+void tStandardLabel::updateText() {
+    int availableWidth = this->width();
+    auto text = d->text;
+    switch (d->elideMode) {
+        case ElideRight:
+            text = this->fontMetrics().elidedText(d->text, Qt::ElideRight, availableWidth);
+            break;
+        case ElideCenter:
+            text = this->fontMetrics().elidedText(d->text, Qt::ElideMiddle, availableWidth);
+            break;
+        case ElideLeft:
+            text = this->fontMetrics().elidedText(d->text, Qt::ElideLeft, availableWidth);
+            break;
+        case NoElide:
+            break;
+    }
+    QLabel::setText(text);
+}
+
+void tStandardLabel::resizeEvent(QResizeEvent* event) {
+    this->updateText();
+}
diff --git a/lib/tstandardlabel.h b/lib/tstandardlabel.h
@@ -10,23 +10,41 @@
 
 struct tStandardLabelPrivate;
 class LIBCONTEMPORARY_EXPORT tStandardLabel : public QLabel {
-    Q_OBJECT
+        Q_OBJECT
 
-public:
-    explicit tStandardLabel(QWidget* parent = nullptr);
-    ~tStandardLabel();
+    public:
+        explicit tStandardLabel(QWidget* parent = nullptr);
+        ~tStandardLabel();
 
-    enum StandardLabelType {
-        Normal,
-        Subtitle
-    };
+        enum StandardLabelType {
+            Normal,
+            Subtitle
+        };
 
-    StandardLabelType type();
-    void setType(StandardLabelType type);
+        enum ElideMode {
+            NoElide,
+            ElideRight,
+            ElideCenter,
+            ElideLeft
+        };
 
-private:
-    tStandardLabelPrivate* d;
-};
+        StandardLabelType type();
+        void setType(StandardLabelType type);
+
+        void setText(QString text);
+        QString text();
+
+        void setElideMode(ElideMode elideMode);
+        ElideMode elideMode();
 
+    private:
+        tStandardLabelPrivate* d;
+
+        void updateText();
+
+        // QWidget interface
+    protected:
+        void resizeEvent(QResizeEvent* event);
+};
 
-#endif //LIBCONTEMPORARY_TSTANDARDLABEL_H
+#endif // LIBCONTEMPORARY_TSTANDARDLABEL_H