Miscellany

Index: widget.cpp
===================================================================
--- widget.cpp	(revision 722543)
+++ widget.cpp	(working copy)
@@ -306,111 +306,7 @@
         return;
     }
 
-    if (d->cachePaintMode == NoCacheMode) {
         paintWidget(painter, option, widget);
-        return;
-    }
-
-    // Cached painting
-    QRectF brect = boundingRect();
-    QRect boundingRectInt = brect.toRect();
-
-    // Fetch the off-screen transparent buffer and exposed area info.
-    QPixmap pix;
-    QPixmapCache::find(d->cacheKey, pix);
-    QRectF exposed = d->cacheInvalidated;
-
-    // Render using item coodinate cache mode.
-    if (d->cachePaintMode == ItemCoordinateCacheMode) {
-        // Recreate the pixmap if it's gone.
-        if (pix.isNull()) {
-            pix = QPixmap(d->cacheSize);
-            exposed = brect;
-        }
-
-        // Check for newly invalidated areas.
-        if (!exposed.isNull()) {
-            d->cacheInvalidated = QRectF();
-
-            QStyleOptionGraphicsItem cacheOption = *option;
-            cacheOption.exposedRect = exposed.toRect(); // <- truncation
-
-            QPainter pixmapPainter(&pix);
-
-            // Fit the item's bounding rect into the pixmap's coordinates.
-            pixmapPainter.scale(pix.width() / brect.width(),
-                                pix.height() / brect.height());
-            pixmapPainter.translate(-brect.topLeft());
-
-            // erase the exposed area so we don't paint over and over
-            pixmapPainter.setCompositionMode(QPainter::CompositionMode_Source);
-            pixmapPainter.fillRect(exposed, Qt::transparent);
-            pixmapPainter.setCompositionMode(QPainter::CompositionMode_SourceOver);
-
-            // Re-render the invalidated areas of the pixmap. Important: don't
-            // fool the item into using the widget - pass 0 instead of \a
-            // widget.
-            paintWidget(&pixmapPainter, &cacheOption, 0);
-            pixmapPainter.end();
-
-            // Reinsert this pixmap into the cache
-            QPixmapCache::insert(d->cacheKey, pix);
-        }
-
-        // Redraw the exposed area using the transformed painter. Depending on
-        // the hardware, this may be a server-side operation, or an expensive
-        // qpixmap-image-transform-pixmap roundtrip.
-        painter->drawPixmap(brect, pix, QRectF(QPointF(), pix.size()));
-        return;
-    }
-
-    // Render using device coordinate cache mode.
-    if (d->cachePaintMode == DeviceCoordinateCacheMode) {
-        QTransform transform = painter->worldTransform();
-        QRect deviceRect = transform.mapRect(brect).toRect();
-
-        // Auto-adjust the pixmap size.
-        if (deviceRect.size() != pix.size()) {
-            pix = QPixmap(deviceRect.size());
-            exposed = brect;
-        }
-
-        // Check for newly invalidated areas.
-        if (!exposed.isNull()) {
-            d->cacheInvalidated = QRectF();
-
-            // Construct the new styleoption, reset the exposed rect.
-            QStyleOptionGraphicsItem cacheOption = *option;
-            cacheOption.exposedRect = exposed.toRect(); // <- truncation
-
-            QPointF viewOrigo = transform.map(QPointF(0,  0));
-            QPointF offset = viewOrigo - deviceRect.topLeft();
-
-            // Transform the painter, and render the item in device coordinates.
-            QPainter pixmapPainter(&pix);
-
-            pixmapPainter.translate(offset);
-            pixmapPainter.setWorldTransform(transform, true);
-            pixmapPainter.translate(transform.inverted().map(QPointF(0, 0)));
-
-            // erase the exposed area so we don't paint over and over
-            pixmapPainter.setCompositionMode(QPainter::CompositionMode_Source);
-            pixmapPainter.fillRect(exposed, Qt::transparent);
-            pixmapPainter.setCompositionMode(QPainter::CompositionMode_SourceOver);
-
-            paintWidget(&pixmapPainter, &cacheOption, 0);
-            pixmapPainter.end();
-
-            // Reinsert this pixmap into the cache
-            QPixmapCache::insert(d->cacheKey, pix);
-        }
-
-        // Redraw the exposed area using an untransformed painter. This
-        // effectively becomes a bitblit that does not transform the cache.
-        painter->setWorldTransform(QTransform());
-        painter->drawPixmap(deviceRect.topLeft(), pix);
-        return;
-    }
 }
 
 void Widget::paintWidget(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)