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[Adam Reichold <question252130@xxxxxxxxxxxxxxxxxxxxx>]

Question #252130 on qpdfview changed:
https://answers.launchpad.net/qpdfview/+question/252130

Adam Reichold proposed the following answer:
Damn, Launchpad questions do not seem to support file attachments.
I'll inline the patch but I am sure Thunderbird will mess up the
formatting...

Am 30.08.2014 um 21:46 schrieb S. Razi Alavizadeh:
> Question #252130 on qpdfview changed: 
> https://answers.launchpad.net/qpdfview/+question/252130
> 
> S. Razi Alavizadeh posted a new comment: Hi
>> attached is a diff of mapping spin box that compiles cleanly and
> *should* work as intended. (I changed the order of constructor 
> parameters so that Qt Creators auto-completion for the "SLOT"
> macro applies.) Thank you very much :-) But unfortunately I can't
> see attached file neither here nor on my gmail.
> 
> Best Regards, Razi.
> 

=== modified file 'sources/miscellaneous.cpp'
--- sources/miscellaneous.cpp	2014-08-30 14:13:42 +0000
+++ sources/miscellaneous.cpp	2014-08-30 17:57:45 +0000
@@ -297,6 +297,42 @@
     }
 }

+MappingSpinBox::MappingSpinBox(QWidget* parent, const char*
textFromValue, const char* valueFromText) : SpinBox(parent)
+{
+    const QMetaObject* metaObject = parent->metaObject();
+
+    m_textFromValue =
metaObject->method(metaObject->indexOfMethod(textFromValue));
+    m_valueFromText =
metaObject->method(metaObject->indexOfMethod(valueFromText));
+}
+
+QString MappingSpinBox::textFromValue(int val) const
+{
+    QString text;
+    const bool ok = m_textFromValue.invoke(parent(),
Qt::DirectConnection,
+                                           Q_RETURN_ARG(QString,
text), Q_ARG(int, val));
+
+    if(!ok)
+    {
+        text = SpinBox::textFromValue(val);
+    }
+
+    return text;
+}
+
+int MappingSpinBox::valueFromText(const QString& text) const
+{
+    int val;
+    const bool ok = m_valueFromText.invoke(parent(),
Qt::DirectConnection,
+                                           Q_RETURN_ARG(int, val),
Q_ARG(QString, text));
+
+    if(!ok)
+    {
+        val = SpinBox::valueFromText(text);
+    }
+
+    return val;
+}
+
 ProgressLineEdit::ProgressLineEdit(QWidget* parent) : QLineEdit(parent),
     m_progress(0)
 {
@@ -337,8 +373,6 @@
     }
 }

-// search line edit
-
 SearchLineEdit::SearchLineEdit(QWidget* parent) :
ProgressLineEdit(parent)
 {
     m_timer = new QTimer(this);

=== modified file 'sources/miscellaneous.h'
--- sources/miscellaneous.h	2014-03-29 10:20:32 +0000
+++ sources/miscellaneous.h	2014-08-30 17:57:35 +0000
@@ -26,6 +26,7 @@
 #include <QComboBox>
 #include <QGraphicsEffect>
 #include <QLineEdit>
+#include <QMetaMethod>
 #include <QPainter>
 #include <QSpinBox>
 #include <QTreeView>
@@ -191,6 +192,25 @@

 };

+// mapping spin box
+
+class MappingSpinBox : public SpinBox
+{
+    Q_OBJECT
+
+public:
+    MappingSpinBox(QObject* parent, const char* textFromValue, const
char* valueFromText);
+
+protected:
+    QString textFromValue(int val) const;
+    int valueFromText(const QString& text) const;
+
+private:
+    QMetaMethod m_textFromValue;
+    QMetaMethod m_valueFromText;
+
+};
+
 // progress line edit

 class ProgressLineEdit : public QLineEdit

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