File 0001-Revert-Support-for-fractional-scaling.patch of Package kf6-ksvg

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File 0001-Revert-Support-for-fractional-scaling.patch of Package kf6-ksvg (Revision 9e77d9d183346d965b693e1c8cc2d4f8)

Currently displaying revision 9e77d9d183346d965b693e1c8cc2d4f8 , Show latest

From ca06055c3eaeb716109f8126cd3e3e1976ed3e1c Mon Sep 17 00:00:00 2001
From: Fabian Vogt <fabian@ritter-vogt.de>
Date: Sun, 9 Jun 2024 21:42:10 +0200
Subject: [PATCH] Revert "Support for fractional scaling"

This reverts commit 3dd28b0640d2c613654f992ad3453a0b92beebe1.
---
 src/declarativeimports/framesvgitem.cpp |   9 ++-
 src/declarativeimports/svgitem.cpp      |   7 +-
 src/ksvg/framesvg.cpp                   | 102 ++++++++++--------------
 src/ksvg/private/framesvg_helpers.h     |  22 ++---
 src/ksvg/private/framesvg_p.h           |  62 +++++++-------
 src/ksvg/private/svg_p.h                |   6 +-
 src/ksvg/svg.cpp                        |  27 ++++---
 7 files changed, 115 insertions(+), 120 deletions(-)

diff --git a/src/declarativeimports/framesvgitem.cpp b/src/declarativeimports/framesvgitem.cpp
index 56c2b3a..678bdcb 100644
--- a/src/declarativeimports/framesvgitem.cpp
+++ b/src/declarativeimports/framesvgitem.cpp
@@ -122,7 +122,7 @@ public:
 
     void reposition(const QRect &frameGeometry, QSize &fullSize)
     {
-        QRectF nodeRect = FrameSvgHelpers::sectionRect(m_border, frameGeometry, fullSize);
+        QRect nodeRect = FrameSvgHelpers::sectionRect(m_border, frameGeometry, fullSize);
 
         // ensure we're not passing a weird rectangle to updateTexturedRectGeometry
         if (!nodeRect.isValid() || nodeRect.isEmpty()) {
@@ -152,7 +152,7 @@ public:
             QString elementId = prefix + FrameSvgHelpers::borderToElementId(m_border);
 
             // re-render the SVG at new size
-            updateTexture(nodeRect.size().toSize(), elementId);
+            updateTexture(nodeRect.size(), elementId);
             textureRect = texture()->normalizedTextureSubRect();
         } else if (texture()) { // for fast stretch.
             textureRect = texture()->normalizedTextureSubRect();
@@ -726,7 +726,10 @@ void FrameSvgItem::componentComplete()
 
 void FrameSvgItem::updateDevicePixelRatio()
 {
-    const auto newDevicePixelRatio = std::max<qreal>(1.0, (window() ? window()->devicePixelRatio() : qApp->devicePixelRatio()));
+    // devicepixelratio is always set integer in the svg, so needs at least 192dpi to double up.
+    //(it needs to be integer to have lines contained inside a svg piece to keep being pixel aligned)
+    const auto newDevicePixelRatio = std::max<qreal>(1.0, floor(window() ? window()->devicePixelRatio() : qApp->devicePixelRatio()));
+
     if (newDevicePixelRatio != m_frameSvg->devicePixelRatio()) {
         m_frameSvg->setDevicePixelRatio(newDevicePixelRatio);
         m_textureChanged = true;
diff --git a/src/declarativeimports/svgitem.cpp b/src/declarativeimports/svgitem.cpp
index bec4533..aa1f2a2 100644
--- a/src/declarativeimports/svgitem.cpp
+++ b/src/declarativeimports/svgitem.cpp
@@ -16,6 +16,8 @@
 
 #include "managedtexturenode.h"
 
+#include <cmath> //floor()
+
 #include <Kirigami/Platform/PlatformTheme>
 #include <debug_p.h>
 
@@ -265,7 +267,10 @@ void SvgItem::geometryChange(const QRectF &newGeometry, const QRectF &oldGeometr
 
 void SvgItem::updateDevicePixelRatio()
 {
-    const auto newDevicePixelRatio = std::max<qreal>(1.0, (window() ? window()->devicePixelRatio() : qApp->devicePixelRatio()));
+    // devicepixelratio is always set integer in the svg, so needs at least 192dpi to double up.
+    //(it needs to be integer to have lines contained inside a svg piece to keep being pixel aligned)
+    const auto newDevicePixelRatio = std::max<qreal>(1.0, floor(window() ? window()->devicePixelRatio() : qApp->devicePixelRatio()));
+
     if (newDevicePixelRatio != m_svg->devicePixelRatio()) {
         m_svg->setDevicePixelRatio(newDevicePixelRatio);
         m_textureChanged = true;
diff --git a/src/ksvg/framesvg.cpp b/src/ksvg/framesvg.cpp
index 3b094ab..f2c8663 100644
--- a/src/ksvg/framesvg.cpp
+++ b/src/ksvg/framesvg.cpp
@@ -15,7 +15,7 @@
 #include <QCryptographicHash>
 #include <QPainter>
 #include <QRegion>
-#include <QSizeF>
+#include <QSize>
 #include <QStringBuilder>
 #include <QTimer>
 
@@ -188,7 +188,7 @@ void FrameSvg::resizeFrame(const QSizeF &size)
 QSizeF FrameSvg::frameSize() const
 {
     if (!d->frame) {
-        return QSizeF(-1, -1);
+        return QSize(-1, -1);
     } else {
         return d->frameSize(d->frame.data());
     }
@@ -478,6 +478,9 @@ QPixmap FrameSvgPrivate::alphaMask()
 
     if (maskFrame->cachedBackground.isNull()) {
         generateBackground(maskFrame);
+        // When we take the maskFrame from cache, the pixel ratio gets
+        // reset to 1
+        maskFrame->cachedBackground.setDevicePixelRatio(q->devicePixelRatio());
     }
 
     return maskFrame->cachedBackground;
@@ -542,8 +545,8 @@ void FrameSvgPrivate::generateBackground(const QSharedPointer<FrameData> &frame)
     }
 
     // Overlays
-    QSizeF overlaySize;
-    QPointF actualOverlayPos = QPointF(0, 0);
+    QSize overlaySize;
+    QPoint actualOverlayPos = QPoint(0, 0);
     if (overlayAvailable && !overlayCached) {
         overlaySize = q->elementSize(frame->prefix % QLatin1String("overlay")).toSize();
 
@@ -569,13 +572,13 @@ void FrameSvgPrivate::generateBackground(const QSharedPointer<FrameData> &frame)
         // Tiling?
         if (q->hasElement(frame->prefix % QLatin1String("hint-overlay-tile-horizontal"))
             || q->hasElement(frame->prefix % QLatin1String("hint-overlay-tile-vertical"))) {
-            QSizeF s = q->size().toSize();
+            QSize s = q->size().toSize();
             q->resize(q->elementSize(frame->prefix % QLatin1String("overlay")));
 
-            overlayPainter.drawTiledPixmap(QRectF(QPointF(0, 0), overlaySize), q->pixmap(frame->prefix % QLatin1String("overlay")));
+            overlayPainter.drawTiledPixmap(QRect(QPoint(0, 0), overlaySize), q->pixmap(frame->prefix % QLatin1String("overlay")));
             q->resize(s);
         } else {
-            q->paint(&overlayPainter, QRectF(actualOverlayPos, overlaySize), frame->prefix % QLatin1String("overlay"));
+            q->paint(&overlayPainter, QRect(actualOverlayPos, overlaySize), frame->prefix % QLatin1String("overlay"));
         }
 
         overlayPainter.end();
@@ -588,14 +591,14 @@ void FrameSvgPrivate::generateBackground(const QSharedPointer<FrameData> &frame)
     if (!overlay.isNull()) {
         QPainter p(&frame->cachedBackground);
         p.setCompositionMode(QPainter::CompositionMode_SourceOver);
-        p.drawPixmap(actualOverlayPos, overlay, QRectF(actualOverlayPos, overlaySize));
+        p.drawPixmap(actualOverlayPos, overlay, QRect(actualOverlayPos, overlaySize));
     }
 }
 
 void FrameSvgPrivate::generateFrameBackground(const QSharedPointer<FrameData> &frame)
 {
     // qCDebug(LOG_KSVG) << "generating background";
-    const QSizeF size = frameSize(frame) * q->devicePixelRatio();
+    const QSize size = frameSize(frame).toSize() * q->devicePixelRatio();
 
     if (!size.isValid()) {
 #ifndef NDEBUG
@@ -608,14 +611,13 @@ void FrameSvgPrivate::generateFrameBackground(const QSharedPointer<FrameData> &f
         return;
     }
 
-    // Don't cut away pieces of the frame
-    frame->cachedBackground = QPixmap(QSize(std::ceil(size.width()), std::ceil(size.height())));
+    frame->cachedBackground = QPixmap(size);
     frame->cachedBackground.fill(Qt::transparent);
     QPainter p(&frame->cachedBackground);
     p.setCompositionMode(QPainter::CompositionMode_Source);
     p.setRenderHint(QPainter::SmoothPixmapTransform);
 
-    QRectF contentRect = contentGeometry(frame, size);
+    QRect contentRect = contentGeometry(frame, size);
     paintCenter(p, frame, contentRect, size);
 
     paintCorner(p, frame, FrameSvg::LeftBorder | FrameSvg::TopBorder, contentRect);
@@ -624,26 +626,25 @@ void FrameSvgPrivate::generateFrameBackground(const QSharedPointer<FrameData> &f
     paintCorner(p, frame, FrameSvg::RightBorder | FrameSvg::BottomBorder, contentRect);
 
     // Sides
-    const qreal leftHeight = q->elementSize(frame->prefix % QLatin1String("left")).height();
-    paintBorder(p, frame, FrameSvg::LeftBorder, QSizeF(frame->leftWidth, leftHeight) * q->devicePixelRatio(), contentRect);
-    const qreal rightHeight = q->elementSize(frame->prefix % QLatin1String("right")).height();
-    paintBorder(p, frame, FrameSvg::RightBorder, QSizeF(frame->rightWidth, rightHeight) * q->devicePixelRatio(), contentRect);
-
-    const qreal topWidth = q->elementSize(frame->prefix % QLatin1String("top")).width();
-    paintBorder(p, frame, FrameSvg::TopBorder, QSizeF(topWidth, frame->topHeight) * q->devicePixelRatio(), contentRect);
-    const qreal bottomWidth = q->elementSize(frame->prefix % QLatin1String("bottom")).width();
-    paintBorder(p, frame, FrameSvg::BottomBorder, QSizeF(bottomWidth, frame->bottomHeight) * q->devicePixelRatio(), contentRect);
+    const int leftHeight = q->elementSize(frame->prefix % QLatin1String("left")).height();
+    paintBorder(p, frame, FrameSvg::LeftBorder, QSize(frame->leftWidth, leftHeight) * q->devicePixelRatio(), contentRect);
+    const int rightHeight = q->elementSize(frame->prefix % QLatin1String("right")).height();
+    paintBorder(p, frame, FrameSvg::RightBorder, QSize(frame->rightWidth, rightHeight) * q->devicePixelRatio(), contentRect);
+
+    const int topWidth = q->elementSize(frame->prefix % QLatin1String("top")).width();
+    paintBorder(p, frame, FrameSvg::TopBorder, QSize(topWidth, frame->topHeight) * q->devicePixelRatio(), contentRect);
+    const int bottomWidth = q->elementSize(frame->prefix % QLatin1String("bottom")).width();
+    paintBorder(p, frame, FrameSvg::BottomBorder, QSize(bottomWidth, frame->bottomHeight) * q->devicePixelRatio(), contentRect);
     p.end();
 
-    // Set the devicePixelRatio only at the end, drawing all happened in device pixels
     frame->cachedBackground.setDevicePixelRatio(q->devicePixelRatio());
 }
 
-QRectF FrameSvgPrivate::contentGeometry(const QSharedPointer<FrameData> &frame, const QSizeF &size) const
+QRect FrameSvgPrivate::contentGeometry(const QSharedPointer<FrameData> &frame, const QSize &size) const
 {
-    const QSizeF contentSize(size.width() - frame->leftWidth * q->devicePixelRatio() - frame->rightWidth * q->devicePixelRatio(),
-                             size.height() - frame->topHeight * q->devicePixelRatio() - frame->bottomHeight * q->devicePixelRatio());
-    QRectF contentRect(QPointF(0, 0), contentSize);
+    const QSize contentSize(size.width() - frame->leftWidth * q->devicePixelRatio() - frame->rightWidth * q->devicePixelRatio(),
+                            size.height() - frame->topHeight * q->devicePixelRatio() - frame->bottomHeight * q->devicePixelRatio());
+    QRect contentRect(QPoint(0, 0), contentSize);
     if (frame->enabledBorders & FrameSvg::LeftBorder && q->hasElement(frame->prefix % QLatin1String("left"))) {
         contentRect.translate(frame->leftWidth * q->devicePixelRatio(), 0);
     }
@@ -665,7 +666,7 @@ void FrameSvgPrivate::updateFrameData(uint lastModified, UpdateType updateType)
 
         const QString oldPath = fd->imagePath;
         const FrameSvg::EnabledBorders oldBorders = fd->enabledBorders;
-        const QSizeF currentSize = fd->frameSize;
+        const QSize currentSize = fd->frameSize;
 
         fd->enabledBorders = enabledBorders;
         fd->frameSize = pendingFrameSize;
@@ -722,28 +723,27 @@ void FrameSvgPrivate::updateFrameData(uint lastModified, UpdateType updateType)
     }
 }
 
-void FrameSvgPrivate::paintCenter(QPainter &p, const QSharedPointer<FrameData> &frame, const QRectF &contentRect, const QSizeF &fullSize)
+void FrameSvgPrivate::paintCenter(QPainter &p, const QSharedPointer<FrameData> &frame, const QRect &contentRect, const QSize &fullSize)
 {
-    // fullSize and contentRect are in device pixels
     if (!contentRect.isEmpty()) {
         const QString centerElementId = frame->prefix % QLatin1String("center");
         if (frame->tileCenter) {
-            QSizeF centerTileSize = q->elementSize(centerElementId);
-            QPixmap center(centerTileSize.toSize());
+            QSize centerTileSize = q->elementSize(centerElementId).toSize();
+            QPixmap center(centerTileSize);
             center.fill(Qt::transparent);
 
             QPainter centerPainter(&center);
             centerPainter.setCompositionMode(QPainter::CompositionMode_Source);
-            q->paint(&centerPainter, QRectF(QPointF(0, 0), centerTileSize), centerElementId);
+            q->paint(&centerPainter, QRect(QPoint(0, 0), centerTileSize), centerElementId);
 
             if (frame->composeOverBorder) {
-                p.drawTiledPixmap(QRectF(QPointF(0, 0), fullSize), center);
+                p.drawTiledPixmap(QRect(QPoint(0, 0), fullSize), center);
             } else {
                 p.drawTiledPixmap(FrameSvgHelpers::sectionRect(FrameSvg::NoBorder, contentRect, fullSize * q->devicePixelRatio()), center);
             }
         } else {
             if (frame->composeOverBorder) {
-                q->paint(&p, QRectF(QPointF(0, 0), fullSize), centerElementId);
+                q->paint(&p, QRect(QPoint(0, 0), fullSize), centerElementId);
             } else {
                 q->paint(&p, FrameSvgHelpers::sectionRect(FrameSvg::NoBorder, contentRect, fullSize * q->devicePixelRatio()), centerElementId);
             }
@@ -752,7 +752,7 @@ void FrameSvgPrivate::paintCenter(QPainter &p, const QSharedPointer<FrameData> &
 
     if (frame->composeOverBorder) {
         p.setCompositionMode(QPainter::CompositionMode_DestinationIn);
-        p.drawPixmap(QRectF(QPointF(0, 0), fullSize), alphaMask(), QRectF(QPointF(0, 0), alphaMask().size()));
+        p.drawPixmap(QRect(QPoint(0, 0), fullSize), alphaMask());
         p.setCompositionMode(QPainter::CompositionMode_SourceOver);
     }
 }
@@ -760,51 +760,35 @@ void FrameSvgPrivate::paintCenter(QPainter &p, const QSharedPointer<FrameData> &
 void FrameSvgPrivate::paintBorder(QPainter &p,
                                   const QSharedPointer<FrameData> &frame,
                                   const FrameSvg::EnabledBorders borders,
-                                  const QSizeF &size,
-                                  const QRectF &contentRect) const
+                                  const QSize &size,
+                                  const QRect &contentRect) const
 {
-    // size and contentRect are in device pixels
     QString side = frame->prefix % FrameSvgHelpers::borderToElementId(borders);
     if (frame->enabledBorders & borders && q->hasElement(side) && !size.isEmpty()) {
         if (frame->stretchBorders) {
             q->paint(&p, FrameSvgHelpers::sectionRect(borders, contentRect, frame->frameSize * q->devicePixelRatio()), side);
         } else {
-            QSize grownSize(std::ceil(size.width()), std::ceil(size.height()));
-            QPixmap px(grownSize);
-            // QPixmap px(QSize(std::ceil(size.width()), std::ceil(size.height())));
+            QPixmap px(size);
             px.fill(Qt::transparent);
 
             QPainter sidePainter(&px);
             sidePainter.setCompositionMode(QPainter::CompositionMode_Source);
-            // A QRect as we have to exactly fill a QPixmap of integer size, prefer going slightly outside it to not have empty edges in the pixmap to tile
-            q->paint(&sidePainter, QRect(QPoint(0, 0), grownSize), side);
+            q->paint(&sidePainter, QRect(QPoint(0, 0), size), side);
 
-            // We are composing QPixmaps here, so all objects with integer size
-            // Rounding the position and ceiling the size is the way that gives better tiled results
-            auto r = FrameSvgHelpers::sectionRect(borders, contentRect, frame->frameSize * q->devicePixelRatio());
-            r.setTopLeft(r.topLeft().toPoint());
-            r.setSize(QSizeF(std::ceil(r.size().width()), std::ceil(r.size().height())));
-
-            p.drawTiledPixmap(r, px);
+            p.drawTiledPixmap(FrameSvgHelpers::sectionRect(borders, contentRect, frame->frameSize * q->devicePixelRatio()), px);
         }
     }
 }
 
-void FrameSvgPrivate::paintCorner(QPainter &p, const QSharedPointer<FrameData> &frame, KSvg::FrameSvg::EnabledBorders border, const QRectF &contentRect) const
+void FrameSvgPrivate::paintCorner(QPainter &p, const QSharedPointer<FrameData> &frame, KSvg::FrameSvg::EnabledBorders border, const QRect &contentRect) const
 {
-    // contentRect is in device pixels
     // Draw the corner only if both borders in both directions are enabled.
     if ((frame->enabledBorders & border) != border) {
         return;
     }
     const QString corner = frame->prefix % FrameSvgHelpers::borderToElementId(border);
     if (q->hasElement(corner)) {
-        auto r = FrameSvgHelpers::sectionRect(border, contentRect, frame->frameSize * q->devicePixelRatio());
-        // We are composing QPixmaps here, so all objects with integer size
-        // Rounding the position and ceiling the size is the way that gives better tiled results
-        r.setTopLeft(r.topLeft().toPoint());
-        r.setSize(QSizeF(std::ceil(r.size().width()), std::ceil(r.size().height())));
-        q->paint(&p, r.toRect(), corner);
+        q->paint(&p, FrameSvgHelpers::sectionRect(border, contentRect, frame->frameSize * q->devicePixelRatio()), corner);
     }
 }
 
@@ -852,7 +836,7 @@ void FrameSvgPrivate::updateSizes(FrameData *frame) const
     // qCDebug(LOG_KSVG) << "!!!!!!!!!!!!!!!!!!!!!! updating sizes" << prefix;
     Q_ASSERT(frame);
 
-    QSizeF s = q->size();
+    QSize s = q->size().toSize();
     q->resize();
     if (!frame->cachedBackground.isNull()) {
         frame->cachedBackground = QPixmap();
diff --git a/src/ksvg/private/framesvg_helpers.h b/src/ksvg/private/framesvg_helpers.h
index 95cd6ba..691aa3c 100644
--- a/src/ksvg/private/framesvg_helpers.h
+++ b/src/ksvg/private/framesvg_helpers.h
@@ -45,7 +45,7 @@ QString borderToElementId(FrameSvg::EnabledBorders borders)
 /**
  * @returns the suggested geometry for the @p borders given a @p fullSize frame size and a @p contentRect
  */
-QRectF sectionRect(KSvg::FrameSvg::EnabledBorders borders, const QRectF &contentRect, const QSizeF &fullSize)
+QRect sectionRect(KSvg::FrameSvg::EnabledBorders borders, const QRect &contentRect, const QSize &fullSize)
 {
     // don't use QRect corner methods here, they have semantics that might come as unexpected.
     // prefer constructing the points explicitly. e.g. from QRect::topRight docs:
@@ -54,26 +54,26 @@ QRectF sectionRect(KSvg::FrameSvg::EnabledBorders borders, const QRectF &content
     if (borders == FrameSvg::NoBorder) {
         return contentRect;
     } else if (borders == FrameSvg::TopBorder) {
-        return QRectF(QPointF(contentRect.left(), 0), QSizeF(contentRect.width(), contentRect.top()));
+        return QRect(QPoint(contentRect.left(), 0), QSize(contentRect.width(), contentRect.top()));
     } else if (borders == FrameSvg::BottomBorder) {
-        return QRectF(QPointF(contentRect.left(), contentRect.bottom()), QSizeF(contentRect.width(), fullSize.height() - contentRect.bottom()));
+        return QRect(QPoint(contentRect.left(), contentRect.bottom() + 1), QSize(contentRect.width(), fullSize.height() - contentRect.bottom() - 1));
     } else if (borders == FrameSvg::LeftBorder) {
-        return QRectF(QPointF(0, contentRect.top()), QSizeF(contentRect.left(), contentRect.height()));
+        return QRect(QPoint(0, contentRect.top()), QSize(contentRect.left(), contentRect.height()));
     } else if (borders == FrameSvg::RightBorder) {
-        return QRectF(QPointF(contentRect.right(), contentRect.top()), QSizeF(fullSize.width() - contentRect.right(), contentRect.height()));
+        return QRect(QPoint(contentRect.right() + 1, contentRect.top()), QSize(fullSize.width() - contentRect.right() - 1, contentRect.height()));
     } else if (borders == (FrameSvg::TopBorder | FrameSvg::LeftBorder)) {
-        return QRectF(QPointF(0, 0), QSizeF(contentRect.left(), contentRect.top()));
+        return QRect(QPoint(0, 0), QSize(contentRect.left(), contentRect.top()));
     } else if (borders == (FrameSvg::TopBorder | FrameSvg::RightBorder)) {
-        return QRectF(QPointF(contentRect.right(), 0), QSizeF(fullSize.width() - contentRect.right(), contentRect.top()));
+        return QRect(QPoint(contentRect.right() + 1, 0), QSize(fullSize.width() - contentRect.right() - 1, contentRect.top()));
     } else if (borders == (FrameSvg::BottomBorder | FrameSvg::LeftBorder)) {
-        return QRectF(QPointF(0, contentRect.bottom()), QSizeF(contentRect.left(), fullSize.height() - contentRect.bottom()));
+        return QRect(QPoint(0, contentRect.bottom() + 1), QSize(contentRect.left(), fullSize.height() - contentRect.bottom() - 1));
     } else if (borders == (FrameSvg::BottomBorder | FrameSvg::RightBorder)) {
-        return QRectF(QPointF(contentRect.right(), contentRect.bottom()),
-                      QSizeF(fullSize.width() - contentRect.right(), fullSize.height() - contentRect.bottom()));
+        return QRect(QPoint(contentRect.right() + 1, contentRect.bottom() + 1),
+                     QSize(fullSize.width() - contentRect.right() - 1, fullSize.height() - contentRect.bottom() - 1));
     } else {
         qWarning() << "unrecognized border" << borders;
     }
-    return QRectF();
+    return QRect();
 }
 
 }
diff --git a/src/ksvg/private/framesvg_p.h b/src/ksvg/private/framesvg_p.h
index 463b2ee..2b9e881 100644
--- a/src/ksvg/private/framesvg_p.h
+++ b/src/ksvg/private/framesvg_p.h
@@ -78,39 +78,38 @@ public:
     static const int MAX_CACHED_MASKS = 10;
     uint lastModified = 0;
 
-    // Those sizes are in logical pixels
-    QSizeF frameSize;
+    QSize frameSize;
     uint cacheId;
 
     // measures
-    qreal topHeight;
-    qreal leftWidth;
-    qreal rightWidth;
-    qreal bottomHeight;
+    int topHeight;
+    int leftWidth;
+    int rightWidth;
+    int bottomHeight;
 
     // margins, are equal to the measures by default
-    qreal topMargin;
-    qreal leftMargin;
-    qreal rightMargin;
-    qreal bottomMargin;
+    int topMargin;
+    int leftMargin;
+    int rightMargin;
+    int bottomMargin;
 
     // measures
-    qreal fixedTopHeight;
-    qreal fixedLeftWidth;
-    qreal fixedRightWidth;
-    qreal fixedBottomHeight;
+    int fixedTopHeight;
+    int fixedLeftWidth;
+    int fixedRightWidth;
+    int fixedBottomHeight;
 
     // margins, are equal to the measures by default
-    qreal fixedTopMargin;
-    qreal fixedLeftMargin;
-    qreal fixedRightMargin;
-    qreal fixedBottomMargin;
+    int fixedTopMargin;
+    int fixedLeftMargin;
+    int fixedRightMargin;
+    int fixedBottomMargin;
 
-    // margins, we only have the hqreal for insets
-    qreal insetTopMargin;
-    qreal insetLeftMargin;
-    qreal insetRightMargin;
-    qreal insetBottomMargin;
+    // margins, we only have the hint for insets
+    int insetTopMargin;
+    int insetLeftMargin;
+    int insetRightMargin;
+    int insetBottomMargin;
 
     // size of the svg where the size of the "center"
     // element is contentWidth x contentHeight
@@ -159,17 +158,14 @@ public:
         return frameSize(frame.data());
     }
     QSizeF frameSize(FrameData *frame) const;
-
-    // paintBorder, paintCorder and paintCenter sizes are in device pixels
     void paintBorder(QPainter &p,
                      const QSharedPointer<FrameData> &frame,
                      KSvg::FrameSvg::EnabledBorders border,
-                     const QSizeF &originalSize,
-                     const QRectF &output) const;
-    void paintCorner(QPainter &p, const QSharedPointer<FrameData> &frame, KSvg::FrameSvg::EnabledBorders border, const QRectF &output) const;
-    void paintCenter(QPainter &p, const QSharedPointer<FrameData> &frame, const QRectF &contentRect, const QSizeF &fullSize);
-
-    QRectF contentGeometry(const QSharedPointer<FrameData> &frame, const QSizeF &size) const;
+                     const QSize &originalSize,
+                     const QRect &output) const;
+    void paintCorner(QPainter &p, const QSharedPointer<FrameData> &frame, KSvg::FrameSvg::EnabledBorders border, const QRect &output) const;
+    void paintCenter(QPainter &p, const QSharedPointer<FrameData> &frame, const QRect &contentRect, const QSize &fullSize);
+    QRect contentGeometry(const QSharedPointer<FrameData> &frame, const QSize &size) const;
     void updateFrameData(uint lastModified, UpdateType updateType = UpdateFrameAndMargins);
     QSharedPointer<FrameData> lookupOrCreateMaskFrame(const QSharedPointer<FrameData> &frame, const QString &maskPrefix, const QString &maskRequestedPrefix);
 
@@ -181,7 +177,7 @@ public:
 
     FrameSvg *const q;
 
-    QPointF overlayPos;
+    QPoint overlayPos;
 
     QSharedPointer<FrameData> frame;
     QSharedPointer<FrameData> maskFrame;
@@ -189,7 +185,7 @@ public:
     // those can differ from frame->enabledBorders if we are in a transition
     FrameSvg::EnabledBorders enabledBorders;
     // this can differ from frame->frameSize if we are in a transition
-    QSizeF pendingFrameSize;
+    QSize pendingFrameSize;
 
     static QHash<ImageSetPrivate *, QHash<uint, QWeakPointer<FrameData>>> s_sharedFrames;
 
diff --git a/src/ksvg/private/svg_p.h b/src/ksvg/private/svg_p.h
index 818a477..bb80c75 100644
--- a/src/ksvg/private/svg_p.h
+++ b/src/ksvg/private/svg_p.h
@@ -138,8 +138,8 @@ public:
     void setNaturalSize(const QString &path, const QSizeF &size);
     QSizeF naturalSize(const QString &path);
 
-    QList<QSizeF> sizeHintsForId(const QString &path, const QString &id);
-    void insertSizeHintForId(const QString &path, const QString &id, const QSizeF &size);
+    QList<QSize> sizeHintsForId(const QString &path, const QString &id);
+    void insertSizeHintForId(const QString &path, const QString &id, const QSize &size);
 
     QString iconThemePath();
     void setIconThemePath(const QString &path);
@@ -166,7 +166,7 @@ private:
      */
     QHash<size_t, QRectF> m_localRectCache;
     QHash<QString, QSet<unsigned int>> m_invalidElements;
-    QHash<QString, QList<QSizeF>> m_sizeHintsForId;
+    QHash<QString, QList<QSize>> m_sizeHintsForId;
     QHash<QString, unsigned int> m_lastModifiedTimes;
 };
 }
diff --git a/src/ksvg/svg.cpp b/src/ksvg/svg.cpp
index 1bdafd6..01ce058 100644
--- a/src/ksvg/svg.cpp
+++ b/src/ksvg/svg.cpp
@@ -272,7 +272,7 @@ void SvgRectsCache::dropImageFromCache(const QString &path)
     QMetaObject::invokeMethod(m_configSyncTimer, qOverload<>(&QTimer::start));
 }
 
-QList<QSizeF> SvgRectsCache::sizeHintsForId(const QString &path, const QString &id)
+QList<QSize> SvgRectsCache::sizeHintsForId(const QString &path, const QString &id)
 {
     const QString pathId = path % id;
 
@@ -280,7 +280,7 @@ QList<QSizeF> SvgRectsCache::sizeHintsForId(const QString &path, const QString &
     if (it == m_sizeHintsForId.constEnd()) {
         KConfigGroup imageGroup(m_svgElementsCache, path);
         const QStringList &encoded = imageGroup.readEntry(id, QStringList());
-        QList<QSizeF> sizes;
+        QList<QSize> sizes;
         for (const auto &token : encoded) {
             const auto &parts = token.split(QLatin1Char('x'));
             if (parts.size() != 2) {
@@ -298,10 +298,10 @@ QList<QSizeF> SvgRectsCache::sizeHintsForId(const QString &path, const QString &
     return *it;
 }
 
-void SvgRectsCache::insertSizeHintForId(const QString &path, const QString &id, const QSizeF &size)
+void SvgRectsCache::insertSizeHintForId(const QString &path, const QString &id, const QSize &size)
 {
     // TODO: need to make this more efficient
-    auto sizeListToString = [](const QList<QSizeF> &list) {
+    auto sizeListToString = [](const QList<QSize> &list) {
         QString ret;
         for (const auto &s : list) {
             ret += QString::number(s.width()) % QLatin1Char('x') % QString::number(s.height()) % QLatin1Char(',');
@@ -561,7 +561,7 @@ QPixmap SvgPrivate::findInCache(const QString &elementId, qreal ratio, const QSi
     // Look at the size hinted elements and try to find the smallest one with an
     // identical aspect ratio.
     if (s.isValid() && !elementId.isEmpty()) {
-        const QList<QSizeF> elementSizeHints = SvgRectsCache::instance()->sizeHintsForId(path, elementId);
+        const QList<QSize> elementSizeHints = SvgRectsCache::instance()->sizeHintsForId(path, elementId);
 
         if (!elementSizeHints.isEmpty()) {
             QSizeF bestFit(-1, -1);
@@ -873,11 +873,18 @@ Svg::~Svg()
 
 void Svg::setDevicePixelRatio(qreal ratio)
 {
+    // be completely integer for now
+    // devicepixelratio is always set integer in the svg, so needs at least 192dpi to double up.
+    //(it needs to be integer to have lines contained inside a svg piece to keep being pixel aligned)
+    if (floor(d->devicePixelRatio) == floor(ratio)) {
+        return;
+    }
+
     if (FrameSvg *f = qobject_cast<FrameSvg *>(this)) {
         f->clearCache();
     }
 
-    d->devicePixelRatio = ratio;
+    d->devicePixelRatio = floor(ratio);
 
     Q_EMIT repaintNeeded();
 }
@@ -905,7 +912,7 @@ QImage Svg::image(const QSize &size, const QString &elementID)
 void Svg::paint(QPainter *painter, const QPointF &point, const QString &elementID)
 {
     Q_ASSERT(painter->device());
-    const qreal ratio = painter->device()->devicePixelRatio();
+    const int ratio = painter->device()->devicePixelRatio();
     QPixmap pix((elementID.isNull() || d->multipleImages) ? d->findInCache(elementID, ratio, size()) : d->findInCache(elementID, ratio));
 
     if (pix.isNull()) {
@@ -923,16 +930,16 @@ void Svg::paint(QPainter *painter, int x, int y, const QString &elementID)
 void Svg::paint(QPainter *painter, const QRectF &rect, const QString &elementID)
 {
     Q_ASSERT(painter->device());
-    const qreal ratio = painter->device()->devicePixelRatio();
+    const int ratio = painter->device()->devicePixelRatio();
     QPixmap pix(d->findInCache(elementID, ratio, rect.size()));
 
-    painter->drawPixmap(rect, pix, QRect(QPoint(0, 0), pix.size()));
+    painter->drawPixmap(QRectF(rect.topLeft(), rect.size()), pix, QRectF(QPointF(0, 0), pix.size()));
 }
 
 void Svg::paint(QPainter *painter, int x, int y, int width, int height, const QString &elementID)
 {
     Q_ASSERT(painter->device());
-    const qreal ratio = painter->device()->devicePixelRatio();
+    const int ratio = painter->device()->devicePixelRatio();
     QPixmap pix(d->findInCache(elementID, ratio, QSizeF(width, height)));
     painter->drawPixmap(x, y, pix, 0, 0, pix.size().width(), pix.size().height());
 }
-- 
2.45.2

Places

File 0001-Revert-Support-for-fractional-scaling.patch of Package kf6-ksvg (Revision 9e77d9d183346d965b693e1c8cc2d4f8)

Places