Port from qAsConst() to std::as_const()

We've been requiring C++17 since Qt 6.0, and our qAsConst use finally
starts to bother us (QTBUG-99313), so time to port away from it
now.

Since qAsConst has exactly the same semantics as std::as_const (down
to rvalue treatment, constexpr'ness and noexcept'ness), there's really
nothing more to it than a global search-and-replace, with manual
unstaging of the actual definition and documentation in dist/,
src/corelib/doc/ and src/corelib/global/.

Task-number: QTBUG-99313
Change-Id: I4c7114444a325ad4e62d0fcbfd347d2bbfb21541
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>

2 files changed, 7 insertions, 7 deletions

diff --git a/src/printsupport/kernel/qplatformprintdevice.cpp b/src/printsupport/kernel/qplatformprintdevice.cpp
index ac8628685d..0ea0242edd 100644
--- a/src/printsupport/kernel/qplatformprintdevice.cpp
+++ b/src/printsupport/kernel/qplatformprintdevice.cpp
@@ -127,7 +127,7 @@ QPageSize QPlatformPrintDevice::supportedPageSize(const QPageSize &pageSize) con
     // e.g. Windows defines DMPAPER_11X17 and DMPAPER_TABLOID with names "11x17" and "Tabloid", but both
     // map to QPageSize::Tabloid / PPD Key "Tabloid" / ANSI B Tabloid
     if (pageSize.id() != QPageSize::Custom) {
-        for (const QPageSize &ps : qAsConst(m_pageSizes)) {
+        for (const QPageSize &ps : std::as_const(m_pageSizes)) {
             if (ps.id() == pageSize.id() && ps.name() == pageSize.name())
                 return ps;
         }
@@ -135,7 +135,7 @@ QPageSize QPlatformPrintDevice::supportedPageSize(const QPageSize &pageSize) con
 
     // Next try match on id only if not custom
     if (pageSize.id() != QPageSize::Custom) {
-        for (const QPageSize &ps : qAsConst(m_pageSizes)) {
+        for (const QPageSize &ps : std::as_const(m_pageSizes)) {
             if (ps.id() == pageSize.id())
                 return ps;
         }
@@ -150,7 +150,7 @@ QPageSize QPlatformPrintDevice::supportedPageSize(QPageSize::PageSizeId pageSize
     if (!m_havePageSizes)
         loadPageSizes();
 
-    for (const QPageSize &ps : qAsConst(m_pageSizes)) {
+    for (const QPageSize &ps : std::as_const(m_pageSizes)) {
         if (ps.id() == pageSizeId)
             return ps;
     }
@@ -164,7 +164,7 @@ QPageSize QPlatformPrintDevice::supportedPageSize(const QString &pageName) const
     if (!m_havePageSizes)
         loadPageSizes();
 
-    for (const QPageSize &ps : qAsConst(m_pageSizes)) {
+    for (const QPageSize &ps : std::as_const(m_pageSizes)) {
         if (ps.name() == pageName)
             return ps;
     }
@@ -197,7 +197,7 @@ QPageSize QPlatformPrintDevice::supportedPageSizeMatch(const QPageSize &pageSize
         return pageSize;
 
     // Try to find a supported page size based on point size
-    for (const QPageSize &ps : qAsConst(m_pageSizes)) {
+    for (const QPageSize &ps : std::as_const(m_pageSizes)) {
         if (ps.sizePoints() == pageSize.sizePoints())
             return ps;
     }
diff --git a/src/printsupport/widgets/qprintpreviewwidget.cpp b/src/printsupport/widgets/qprintpreviewwidget.cpp
index 247fbf9601..fa33cf66b8 100644
--- a/src/printsupport/widgets/qprintpreviewwidget.cpp
+++ b/src/printsupport/widgets/qprintpreviewwidget.cpp
@@ -296,7 +296,7 @@ void QPrintPreviewWidgetPrivate::init()
 void QPrintPreviewWidgetPrivate::populateScene()
 {
     // remove old pages
-    for (auto *page : qAsConst(pages))
+    for (auto *page : std::as_const(pages))
         scene->removeItem(page);
     qDeleteAll(pages);
     pages.clear();
@@ -305,7 +305,7 @@ void QPrintPreviewWidgetPrivate::populateScene()
     QRect pageRect = printer->pageLayout().paintRectPixels(printer->resolution());
 
     int page = 1;
-    for (auto *picture : qAsConst(pictures)) {
+    for (auto *picture : std::as_const(pictures)) {
         PageItem* item = new PageItem(page++, picture, paperSize, pageRect);
         scene->addItem(item);
         pages.append(item);