Fix selection rect after porting from QFontMetrics::width()

After porting from QFontMetrics::width() to QFontMetrics::boundigRect().width() in system/dolphin!10 we have a visual bug on selection rects, that can be seen on details and compact modes.

While from https://kdepepo.wordpress.com/2019/08/05/about-deprecation-of-qfontmetricswidth/ the use of `boundingRect()` would seem the right option to use (and I struggle to get the difference between the two methods when applied to a whole string and not a single char), in this case the `horizontalAdvance()` seems to return the value we need.

BUG: 421973
FIXED-IN: 20.07.70

diff --git a/src/kitemviews/kstandarditemlistwidget.cpp b/src/kitemviews/kstandarditemlistwidget.cpp
index 4018b3c15747283be5575b5d2f94a75e2954a4dd..214cc3755b505cb8f3656322001d7ac5052487d3 100644 (file)
--- a/src/kitemviews/kstandarditemlistwidget.cpp
+++ b/src/kitemviews/kstandarditemlistwidget.cpp
@@ -88,7 +88,7 @@ qreal KStandardItemListWidgetInformant::preferredRoleColumnWidth(const QByteArra
         // If current item is a link, we use the customized link font metrics instead of the normal font metrics.
         const QFontMetrics& fontMetrics = itemIsLink(index, view) ? linkFontMetrics : normalFontMetrics;
 
-        width += fontMetrics.boundingRect(text).width();
+        width += fontMetrics.horizontalAdvance(text);
 
         if (role == "text") {
             if (view->supportsItemExpanding()) {
@@ -214,12 +214,12 @@ void KStandardItemListWidgetInformant::calculateCompactLayoutItemSizeHints(QVect
         qreal maximumRequiredWidth = 0.0;
 
         if (showOnlyTextRole) {
-            maximumRequiredWidth = fontMetrics.boundingRect(itemText(index, view)).width();
+            maximumRequiredWidth = fontMetrics.horizontalAdvance(itemText(index, view));
         } else {
             const QHash<QByteArray, QVariant>& values = view->model()->data(index);
             foreach (const QByteArray& role, visibleRoles) {
                 const QString& text = roleText(role, values);
-                const qreal requiredWidth = fontMetrics.boundingRect(text).width();
+                const qreal requiredWidth = fontMetrics.horizontalAdvance(text);
                 maximumRequiredWidth = qMax(maximumRequiredWidth, requiredWidth);
             }
         }
@@ -478,7 +478,7 @@ QRectF KStandardItemListWidget::textFocusRect() const
         const KItemListStyleOption& option = styleOption();
         if (option.extendedSelectionRegion) {
             const QString text = textInfo->staticText.text();
-            rect.setWidth(m_customizedFontMetrics.boundingRect(text).width() + 2 * option.padding);
+            rect.setWidth(m_customizedFontMetrics.horizontalAdvance(text) + 2 * option.padding);
         }
 
         return rect;
@@ -1119,7 +1119,7 @@ QString KStandardItemListWidget::elideRightKeepExtension(const QString &text, in
     if (extensionIndex != -1) {
         // has file extension
         const auto extensionLength = text.length() - extensionIndex;
-        const auto extensionWidth = m_customizedFontMetrics.boundingRect(text.right(extensionLength)).width();
+        const auto extensionWidth = m_customizedFontMetrics.horizontalAdvance(text.right(extensionLength));
         if (elidingWidth > extensionWidth && extensionLength < 6 && (float(extensionWidth) / float(elidingWidth)) < 0.3) {
             // if we have room to display the file extension and the extension is not too long
             QString ret = m_customizedFontMetrics.elidedText(text.chopped(extensionLength),
@@ -1188,7 +1188,7 @@ void KStandardItemListWidget::updateIconsLayoutTextCache()
                     const QString elidedText = nameText.left(line.textStart()) + lastTextLine;
                     nameTextInfo->staticText.setText(elidedText);
 
-                    lastLineWidth = m_customizedFontMetrics.boundingRect(lastTextLine).width();
+                    lastLineWidth = m_customizedFontMetrics.horizontalAdvance(lastTextLine);
 
                     // We do the text eliding in a loop with decreasing width (1 px / iteration)
                     // to avoid problems related to different width calculation code paths
@@ -1241,7 +1241,7 @@ void KStandardItemListWidget::updateIconsLayoutTextCache()
             if (requiredWidth > maxWidth) {
                 const QString elidedText = elideRightKeepExtension(text, maxWidth);
                 textInfo->staticText.setText(elidedText);
-                requiredWidth = m_customizedFontMetrics.boundingRect(elidedText).width();
+                requiredWidth = m_customizedFontMetrics.horizontalAdvance(elidedText);
             } else if (role == "rating") {
                 // Use the width of the rating pixmap, because the rating text is empty.
                 requiredWidth = m_rating.width();
@@ -1285,7 +1285,7 @@ void KStandardItemListWidget::updateCompactLayoutTextCache()
         TextInfo* textInfo = m_textInfo.value(role);
         textInfo->staticText.setText(text);
 
-        qreal requiredWidth = m_customizedFontMetrics.boundingRect(text).width();
+        qreal requiredWidth = m_customizedFontMetrics.horizontalAdvance(text);
         if (requiredWidth > maxWidth) {
             requiredWidth = maxWidth;
             const QString elidedText = elideRightKeepExtension(text, maxWidth);
@@ -1300,7 +1300,7 @@ void KStandardItemListWidget::updateCompactLayoutTextCache()
         y += lineSpacing;
     }
 
-    m_textRect = QRectF(x - 2 * option.padding, 0, maximumRequiredTextWidth + 3 * option.padding, widgetHeight);
+    m_textRect = QRectF(x - option.padding, 0, maximumRequiredTextWidth + 2 * option.padding, widgetHeight);
 }
 
 void KStandardItemListWidget::updateDetailsLayoutTextCache()
@@ -1335,7 +1335,7 @@ void KStandardItemListWidget::updateDetailsLayoutTextCache()
         QString text = roleText(role, values);
 
         // Elide the text in case it does not fit into the available column-width
-        qreal requiredWidth = m_customizedFontMetrics.boundingRect(text).width();
+        qreal requiredWidth = m_customizedFontMetrics.horizontalAdvance(text);
         const qreal roleWidth = columnWidth(role);
         qreal availableTextWidth = roleWidth - columnWidthInc;
 
@@ -1346,7 +1346,7 @@ void KStandardItemListWidget::updateDetailsLayoutTextCache()
 
         if (requiredWidth > availableTextWidth) {
             text = elideRightKeepExtension(text, availableTextWidth);
-            requiredWidth = m_customizedFontMetrics.boundingRect(text).width();
+            requiredWidth = m_customizedFontMetrics.horizontalAdvance(text);
         }
 
         TextInfo* textInfo = m_textInfo.value(role);
@@ -1358,8 +1358,8 @@ void KStandardItemListWidget::updateDetailsLayoutTextCache()
             const qreal textWidth = option.extendedSelectionRegion
                                     ? size().width() - textInfo->pos.x()
                                     : requiredWidth + 2 * option.padding;
-            m_textRect = QRectF(textInfo->pos.x() - 2 * option.padding, 0,
-                                textWidth + option.padding, size().height());
+            m_textRect = QRectF(textInfo->pos.x() - option.padding, 0,
+                                textWidth, size().height());
 
             // The column after the name should always be aligned on the same x-position independent
             // from the expansion-level shown in the name column