QtWidgets: use printf-style qWarning/qDebug where possible (I)

The printf-style version of QDebug expands to a lot less code than the
std::ostream-style version. Of course, you pay in type safety (but
compilers warn about it these days), you cannot stream complex Qt
types and streaming QStrings is awkward, but in many cases you
actually improve on readability.

But the main reason is that something that's not supposed to be
executed under normal operation has no business bloating executable
code size.

This is not an attempt at converting all qWarnings() to printf-style,
only the low-hanging fruit.

In this first part, replace
   qWarning() << "...";
with
   qWarning("...");

Change-Id: I1f6869b024103c98262f1deae014e0d7337a541c
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/src/widgets/util/qflickgesture.cpp b/src/widgets/util/qflickgesture.cpp
index 8eadc42625..c7e0861a0f 100644
--- a/src/widgets/util/qflickgesture.cpp
+++ b/src/widgets/util/qflickgesture.cpp
@@ -155,9 +155,9 @@ public:
             mouseTarget = QApplication::widgetAt(pressDelayEvent->globalPos());
             mouseButton = pressDelayEvent->button();
             mouseEventSource = pressDelayEvent->source();
-            qFGDebug() << "QFG: consuming/delaying mouse press";
+            qFGDebug("QFG: consuming/delaying mouse press");
         } else {
-            qFGDebug() << "QFG: NOT consuming/delaying mouse press";
+            qFGDebug("QFG: NOT consuming/delaying mouse press");
         }
         e->setAccepted(true);
     }
@@ -194,7 +194,7 @@ public:
 
     void scrollerWasIntercepted()
     {
-        qFGDebug() << "QFG: deleting delayed mouse press, since scroller was only intercepted";
+        qFGDebug("QFG: deleting delayed mouse press, since scroller was only intercepted");
         if (pressDelayEvent) {
             // we still haven't even sent the press, so just throw it away now
             if (pressDelayTimer) {
@@ -210,7 +210,7 @@ public:
     {
         if (pressDelayEvent) {
             // we still haven't even sent the press, so just throw it away now
-            qFGDebug() << "QFG: deleting delayed mouse press, since scroller is active now";
+            qFGDebug("QFG: deleting delayed mouse press, since scroller is active now");
             if (pressDelayTimer) {
                 killTimer(pressDelayTimer);
                 pressDelayTimer = 0;