X-Git-Url: https://cloud.milkyroute.net/gitweb/dolphin.git/blobdiff_plain/e348bc58267b3dc06f2fc044f9e5ce5a5dfcd087..600166152d857ccfc9df15b25bd1237b74c71d43:/src/kitemviews/kstandarditemlistwidget.cpp

diff --git a/src/kitemviews/kstandarditemlistwidget.cpp b/src/kitemviews/kstandarditemlistwidget.cpp
index e1f0f9df1..f0394dfda 100644
--- a/src/kitemviews/kstandarditemlistwidget.cpp
+++ b/src/kitemviews/kstandarditemlistwidget.cpp
@@ -249,22 +249,52 @@ void KStandardItemListWidget::paint(QPainter* painter, const QStyleOptionGraphic
 
     const KItemListStyleOption& itemListStyleOption = styleOption();
     if (isHovered()) {
-        // Blend the unhovered and hovered pixmap if the hovering
-        // animation is ongoing
         if (hoverOpacity() < 1.0) {
-            drawPixmap(painter, m_pixmap);
-        }
+            /*
+             * Linear interpolation between m_pixmap and m_hoverPixmap.
+             *
+             * Note that this cannot be achieved by painting m_hoverPixmap over
+             * m_pixmap, even if the opacities are adjusted. For details see
+             * https://git.reviewboard.kde.org/r/109614/
+             */
+            // Paint pixmap1 so that pixmap1 = m_pixmap * (1.0 - hoverOpacity())
+            QPixmap pixmap1(m_pixmap.size());
+            pixmap1.fill(Qt::transparent);
+            {
+                QPainter p(&pixmap1);
+                p.setOpacity(1.0 - hoverOpacity());
+                p.drawPixmap(0, 0, m_pixmap);
+            }
+
+            // Paint pixmap2 so that pixmap2 = m_hoverPixmap * hoverOpacity()
+            QPixmap pixmap2(pixmap1.size());
+            pixmap2.fill(Qt::transparent);
+            {
+                QPainter p(&pixmap2);
+                p.setOpacity(hoverOpacity());
+                p.drawPixmap(0, 0, m_hoverPixmap);
+            }
+
+            // Paint pixmap2 on pixmap1 using CompositionMode_Plus
+            // Now pixmap1 = pixmap2 + m_pixmap * (1.0 - hoverOpacity())
+            //             = m_hoverPixmap * hoverOpacity() + m_pixmap * (1.0 - hoverOpacity())
+            {
+                QPainter p(&pixmap1);
+                p.setCompositionMode(QPainter::CompositionMode_Plus);
+                p.drawPixmap(0, 0, pixmap2);
+            }
 
-        const qreal opacity = painter->opacity();
-        painter->setOpacity(hoverOpacity() * opacity);
-        drawPixmap(painter, m_hoverPixmap);
-        painter->setOpacity(opacity);
+            // Finally paint pixmap1 on the widget
+            drawPixmap(painter, pixmap1);
+        } else {
+            drawPixmap(painter, m_hoverPixmap);
+        }
     } else {
         drawPixmap(painter, m_pixmap);
     }
 
     painter->setFont(m_customizedFont);
-    painter->setPen(m_isHidden ? m_additionalInfoTextColor : textColor());
+    painter->setPen(textColor());
     const TextInfo* textInfo = m_textInfo.value("text");
 
     if (!textInfo) {
@@ -493,8 +523,12 @@ void KStandardItemListWidget::setTextColor(const QColor& color)
 
 QColor KStandardItemListWidget::textColor() const
 {
-    if (m_customTextColor.isValid() && !isSelected()) {
-        return m_customTextColor;
+    if (!isSelected()) {
+        if (m_isHidden) {
+            return m_additionalInfoTextColor;
+        } else if (m_customTextColor.isValid()) {
+            return m_customTextColor;
+        }
     }
 
     const QPalette::ColorGroup group = isActiveWindow() ? QPalette::Active : QPalette::Inactive;
@@ -840,7 +874,7 @@ void KStandardItemListWidget::updatePixmapCache()
         if (isSelected()) {
             const QColor color = palette().brush(QPalette::Normal, QPalette::Highlight).color();
             QImage image = m_pixmap.toImage();
-            KIconEffect::colorize(image, color, 1.0f);
+            KIconEffect::colorize(image, color, 0.8f);
             m_pixmap = QPixmap::fromImage(image);
         }
     }