QtPrintSupport: convert some index-based into C++11 range-for loops

Also reserve a QList in QPrinter::supportedPaperSources().

Change-Id: I94d24b81d7adcad2b28d36efdbef5a8726412f1a
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>

3 files changed, 13 insertions, 13 deletions

diff --git a/src/printsupport/kernel/qpaintengine_alpha.cpp b/src/printsupport/kernel/qpaintengine_alpha.cpp
index 4922d210f2..939322cc07 100644
--- a/src/printsupport/kernel/qpaintengine_alpha.cpp
+++ b/src/printsupport/kernel/qpaintengine_alpha.cpp
@@ -336,8 +336,8 @@ void QAlphaPaintEngine::flushAndInit(bool init)
         d->resetState(painter());
 
         // fill in the alpha images
-        for (int i=0; i<rects.size(); ++i)
-            d->drawAlphaImage(rects.at(i));
+        for (const auto &rect : qAsConst(rects))
+            d->drawAlphaImage(rect);
 
         d->m_alphargn = QRegion();
 
diff --git a/src/printsupport/kernel/qprintdevice.cpp b/src/printsupport/kernel/qprintdevice.cpp
index 29dd0d6529..26799a6f13 100644
--- a/src/printsupport/kernel/qprintdevice.cpp
+++ b/src/printsupport/kernel/qprintdevice.cpp
@@ -283,10 +283,10 @@ void QPrintDevice::format(QDebug debug) const
               << ", defaultColorMode="<< defaultColorMode();
 #    ifndef QT_NO_MIMETYPE
         const QList<QMimeType> mimeTypes = supportedMimeTypes();
-        if (const int mimeTypeCount = mimeTypes.size()) {
+        if (!mimeTypes.isEmpty()) {
             debug << ", supportedMimeTypes=(";
-            for (int i = 0; i < mimeTypeCount; ++i)
-                debug << " \"" << mimeTypes.at(i).name() << '"';
+            for (const auto &mimeType : mimeTypes)
+                debug << " \"" << mimeType.name() << '"';
             debug << ')';
         }
 #    endif // !QT_NO_MIMETYPE
diff --git a/src/printsupport/kernel/qprinter.cpp b/src/printsupport/kernel/qprinter.cpp
index cc4c8244ae..cbab151ea0 100644
--- a/src/printsupport/kernel/qprinter.cpp
+++ b/src/printsupport/kernel/qprinter.cpp
@@ -1946,13 +1946,12 @@ int QPrinter::winPageSize() const
 QList<int> QPrinter::supportedResolutions() const
 {
     Q_D(const QPrinter);
-    QList<QVariant> varlist
+    const QList<QVariant> varlist
         = d->printEngine->property(QPrintEngine::PPK_SupportedResolutions).toList();
     QList<int> intlist;
-    const int numSupportedResolutions = varlist.size();
-    intlist.reserve(numSupportedResolutions);
-    for (int i = 0; i < numSupportedResolutions; ++i)
-        intlist << varlist.at(i).toInt();
+    intlist.reserve(varlist.size());
+    for (auto var : varlist)
+        intlist << var.toInt();
     return intlist;
 }
 
@@ -2015,10 +2014,11 @@ QList<QPrinter::PaperSource> QPrinter::supportedPaperSources() const
     Q_D(const QPrinter);
     QVariant v = d->printEngine->property(QPrintEngine::PPK_PaperSources);
 
-    QList<QVariant> variant_list = v.toList();
+    const QList<QVariant> variant_list = v.toList();
     QList<QPrinter::PaperSource> int_list;
-    for (int i=0; i<variant_list.size(); ++i)
-        int_list << (QPrinter::PaperSource) variant_list.at(i).toInt();
+    int_list.reserve(variant_list.size());
+    for (const auto &variant : variant_list)
+        int_list << QPrinter::PaperSource(variant.toInt());
 
     return int_list;
 }