IconItem: Add roundToIconSize property

Disabling this property makes it possible to show icon of arbitrary size.

Differential Revision: https://phabricator.kde.org/D4689

autotests/iconitemtest.cpp

@@ -514,5 +514,25 @@ void IconItemTest::implicitSize()
     QCOMPARE(item->implicitHeight(), qreal(64));
 }
 
+void IconItemTest::roundToIconSize()
+{
+    QQuickItem *item = createIconItem();
+
+    item->setWidth(25);
+    item->setHeight(25);
+    QVERIFY(item->property("paintedWidth").toInt() != 25);
+    QVERIFY(item->property("paintedHeight").toInt() != 25);
+
+    QSignalSpy paintedSizeSpy(item, SIGNAL(paintedSizeChanged()));
+    QSignalSpy roundToIconSizeSpy(item, SIGNAL(roundToIconSizeChanged()));
+
+    item->setProperty("roundToIconSize", false);
+
+    QTRY_COMPARE(paintedSizeSpy.count(), 1);
+    QTRY_COMPARE(roundToIconSizeSpy.count(), 1);
+    QVERIFY(item->property("paintedWidth").toInt() == 25);
+    QVERIFY(item->property("paintedHeight").toInt() == 25);
+}
+
 QTEST_MAIN(IconItemTest)
 

autotests/iconitemtest.h

@@ -56,6 +56,7 @@ private Q_SLOTS:
     void windowChanged();
     void paintedSize();
     void implicitSize();
+    void roundToIconSize();
 
 private:
     QQuickItem *createIconItem();

src/declarativeimports/core/iconitem.cpp

@@ -44,6 +44,7 @@ IconItem::IconItem(QQuickItem *parent)
       m_active(false),
       m_animated(true),
       m_usesPlasmaTheme(true),
+      m_roundToIconSize(true),
       m_textureChanged(false),
       m_sizeChanged(false),
       m_allowNextAnimation(false),
@@ -305,6 +306,29 @@ void IconItem::setUsesPlasmaTheme(bool usesPlasmaTheme)
     emit usesPlasmaThemeChanged();
 }
 
+bool IconItem::roundToIconSize() const
+{
+    return m_roundToIconSize;
+}
+
+void IconItem::setRoundToIconSize(bool roundToIconSize)
+{
+    if (m_roundToIconSize == roundToIconSize) {
+        return;
+    }
+
+    const QSize oldPaintedSize = paintedSize();
+
+    m_roundToIconSize = roundToIconSize;
+    emit roundToIconSizeChanged();
+
+    if (oldPaintedSize != paintedSize()) {
+        emit paintedSizeChanged();
+    }
+
+    schedulePixmapUpdate();
+}
+
 bool IconItem::isValid() const
 {
     return !m_icon.isNull() || m_svgIcon || !m_imageIcon.isNull();
@@ -330,17 +354,21 @@ QSize IconItem::paintedSize(const QSizeF &containerSize) const
     const int height = paintedSize.height();
 
     if (width == height) {
-        return QSize(Units::roundToIconSize(width), Units::roundToIconSize(height));
+        if (m_roundToIconSize) {
+            return QSize(Units::roundToIconSize(width), Units::roundToIconSize(height));
+        } else {
+            return QSize(width, height);
+        }
     }
 
     // if we don't have a square image, we still want it to be rounded to icon size
     // but we cannot just blindly round both as we might erroneously change a 50x45 image to be 48x32
     // instead, round the bigger of the two and then downscale the smaller with the ratio
     if (width > height) {
-        const int roundedWidth = Units::roundToIconSize(width);
+        const int roundedWidth = m_roundToIconSize ? Units::roundToIconSize(width) : width;
         return QSize(roundedWidth, qRound(height * (roundedWidth / static_cast<qreal>(width))));
     } else {
-        const int roundedHeight = Units::roundToIconSize(height);
+        const int roundedHeight = m_roundToIconSize ? Units::roundToIconSize(height) : height;
         return QSize(qRound(width * (roundedHeight / static_cast<qreal>(height))), roundedHeight);
     }
 }
@@ -452,7 +480,10 @@ void IconItem::loadPixmap()
         return;
     }
 
-    const int size = Units::roundToIconSize(qMin(qRound(width()), qRound(height())));
+    int size = qMin(qRound(width()), qRound(height()));
+    if (m_roundToIconSize) {
+        size = Units::roundToIconSize(size);
+    }
 
     //final pixmap to paint
     QPixmap result;

src/declarativeimports/core/iconitem.h

@@ -97,6 +97,11 @@ class IconItem : public QQuickItem
      */
     Q_PROPERTY(bool usesPlasmaTheme READ usesPlasmaTheme WRITE setUsesPlasmaTheme NOTIFY usesPlasmaThemeChanged)
 
+    /**
+     * If set, icon will round the painted size to defined icon sizes. Default is true.
+     */
+    Q_PROPERTY(bool roundToIconSize READ roundToIconSize WRITE setRoundToIconSize NOTIFY roundToIconSizeChanged)
+
     /**
      * True if a valid icon is set. False otherwise.
      */
@@ -139,6 +144,9 @@ public:
     bool usesPlasmaTheme() const;
     void setUsesPlasmaTheme(bool usesPlasmaTheme);
 
+    bool roundToIconSize() const;
+    void setRoundToIconSize(bool roundToIconSize);
+
     bool isValid() const;
 
     int paintedWidth() const;
@@ -163,6 +171,7 @@ Q_SIGNALS:
     void smoothChanged();
     void animatedChanged();
     void usesPlasmaThemeChanged();
+    void roundToIconSizeChanged();
     void validChanged();
     void colorGroupChanged();
     void paintedSizeChanged();
@@ -195,6 +204,7 @@ private:
     bool m_active;
     bool m_animated;
     bool m_usesPlasmaTheme;
+    bool m_roundToIconSize;
 
     bool m_textureChanged;
     bool m_sizeChanged;