Diaglib: Improve output of widgets.

- Make it possible to pass an optional root widget to dumpAllWidgets().
- Add option to output size constraints of widgets/windows.
- Output normal geometry of top levels.

Change-Id: Ib48809d070c5721fe4688a2ad39cb99f286618de
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>

tests/manual/diaglib/qwidgetdump.cpp

@@ -61,10 +61,32 @@ static void dumpWidgetRecursion(QTextStream &str, const QWidget *w,
     if (const int states = w->windowState())
         str << "windowState=" << hex << showbase << states << dec << noshowbase << ' ';
     formatRect(str, w->geometry());
+    if (w->isWindow()) {
+        const QRect normalGeometry = w->normalGeometry();
+        if (normalGeometry.isValid() && !normalGeometry.isEmpty() && normalGeometry != w->geometry()) {
+            str << " normal=";
+            formatRect(str, w->normalGeometry());
+        }
+    }
     if (!(options & DontPrintWindowFlags)) {
         str << ' ';
         formatWindowFlags(str, w->windowFlags());
     }
+    if (options & PrintSizeConstraints) {
+        str << ' ';
+        const QSize minimumSize = w->minimumSize();
+        if (minimumSize.width() > 0 || minimumSize.height() > 0)
+            str << "minimumSize=" << minimumSize.width() << 'x' << minimumSize.height() << ' ';
+        const QSize sizeHint = w->sizeHint();
+        const QSize minimumSizeHint = w->minimumSizeHint();
+        if (minimumSizeHint.isValid() && !(sizeHint.isValid() && minimumSizeHint == sizeHint))
+            str << "minimumSizeHint=" << minimumSizeHint.width() << 'x' << minimumSizeHint.height() << ' ';
+        if (sizeHint.isValid())
+            str << "sizeHint=" << sizeHint.width() << 'x' << sizeHint.height() << ' ';
+        const QSize maximumSize = w->maximumSize();
+        if (maximumSize.width() < QWIDGETSIZE_MAX || maximumSize.height() < QWIDGETSIZE_MAX)
+            str << "maximumSize=" << maximumSize.width() << 'x' << maximumSize.height() << ' ';
+    }
     str << '\n';
 #if QT_VERSION > 0x050000
     if (const QWindow *win = w->windowHandle()) {
@@ -79,12 +101,17 @@ static void dumpWidgetRecursion(QTextStream &str, const QWidget *w,
     }
 }
 
-void dumpAllWidgets(FormatWindowOptions options)
+void dumpAllWidgets(FormatWindowOptions options, const QWidget *root)
 {
     QString d;
     QTextStream str(&d);
     str << "### QWidgets:\n";
-    foreach (QWidget *tw, QApplication::topLevelWidgets())
+    QWidgetList topLevels;
+    if (root)
+        topLevels.append(const_cast<QWidget *>(root));
+    else
+        topLevels = QApplication::topLevelWidgets();
+    foreach (QWidget *tw, topLevels)
         dumpWidgetRecursion(str, tw, options);
 #if QT_VERSION >= 0x050400
     qDebug().noquote() << d;

tests/manual/diaglib/qwidgetdump.h

@@ -36,9 +36,11 @@
 
 #include "qwindowdump.h"
 
+QT_FORWARD_DECLARE_CLASS(QWidget)
+
 namespace QtDiag {
 
-void dumpAllWidgets(FormatWindowOptions options = 0);
+void dumpAllWidgets(FormatWindowOptions options = 0, const QWidget *root = 0);
 
 } // namespace QtDiag
 

tests/manual/diaglib/qwindowdump.cpp

@@ -38,6 +38,7 @@
 #  include <QtGui/QScreen>
 #  include <QtGui/QWindow>
 #  include <qpa/qplatformwindow.h>
+#  include <private/qwindow_p.h>
 #  if QT_VERSION >= 0x050600
 #    include <private/qhighdpiscaling_p.h>
 #  endif
@@ -151,6 +152,15 @@ void formatWindow(QTextStream &str, const QWindow *w, FormatWindowOptions option
         str << ' ';
         formatWindowFlags(str, w->flags());
     }
+    if (options & PrintSizeConstraints) {
+        str << ' ';
+        const QSize minimumSize = w->minimumSize();
+        if (minimumSize.width() > 0 || minimumSize.height() > 0)
+            str << "minimumSize=" << minimumSize.width() << 'x' << minimumSize.height() << ' ';
+        const QSize maximumSize = w->maximumSize();
+        if (maximumSize.width() < QWINDOWSIZE_MAX || maximumSize.height() < QWINDOWSIZE_MAX)
+            str << "maximumSize=" << maximumSize.width() << 'x' << maximumSize.height() << ' ';
+    }
     str << '\n';
 }
 

tests/manual/diaglib/qwindowdump.h

@@ -44,7 +44,8 @@ QT_FORWARD_DECLARE_CLASS(QTextStream)
 namespace QtDiag {
 
 enum FormatWindowOption {
-    DontPrintWindowFlags = 0x001
+    DontPrintWindowFlags = 0x001,
+    PrintSizeConstraints = 0x002
 };
 
 Q_DECLARE_FLAGS(FormatWindowOptions, FormatWindowOption)