Added QPixmap isNull and assign functions

lib/include/DOtherSide/DOtherSide.h

@@ -148,6 +148,13 @@ DOS_API void DOS_CALL dos_qpixmap_load(DosPixmap *vptr, const char* filepath, co
 DOS_API void DOS_CALL dos_qpixmap_loadFromData(DosPixmap *vptr, const unsigned char* data, unsigned int len);
 /// \brief Fill a QPixmap with a single color
 DOS_API void DOS_CALL dos_qpixmap_fill(DosPixmap *vptr, unsigned char r, unsigned char g, unsigned char b, unsigned char a);
+/// \brief Calls the QPixmap::operator=(const QPixmap&) function
+/// \param vptr The left hand side QPixmap
+/// \param other The right hand side QPixmap
+DOS_API void DOS_CALL dos_qpixmap_assign(DosPixmap *vptr, const DosPixmap* other);
+/// \brief Calls the QPixmap::isNull
+/// \return True if the QPixmap is null, false otherwise
+DOS_API bool DOS_CALL dos_qpixmap_isNull(DosPixmap *vptr);
 /// @}
 
 

lib/include/DOtherSide/DOtherSideTypes.h

@@ -87,7 +87,7 @@ typedef DosPixmap* (DOS_CALL *PixmapCallback)(const char *id, int *width, int *h
 /// In other words the length of argv is always 1 + number of arguments of \p slotName.
 /// The return value should be assigned and modified by calling the dos_qvariant_assign()
 /// or other dos_qvariant_set... setters.
-/// \note The \p slotName is owned by the framework thus it \b shouldn't be deleted
+/// \note The \p slotName is owned by the library thus it \b shouldn't be deleted
 /// \note The \p argv array is owned by the library thus it \b shouldn't be deleted
 typedef void (DOS_CALL *DObjectCallback)(void *self, DosQVariant *slotName, int argc, DosQVariant **argv);
 

lib/src/DOtherSide.cpp

@@ -191,6 +191,21 @@ void dos_qpixmap_fill(DosPixmap *vptr, unsigned char r, unsigned char g, unsigne
     pixmap->fill(QColor(r, g, b, a));
 }
 
+void dos_qpixmap_assign(DosPixmap *vptr, const DosPixmap *other)
+{
+    if (vptr) {
+        auto lhs = static_cast<QPixmap *>(vptr);
+        auto rhs = static_cast<QPixmap *>(vptr);
+        *lhs = rhs ? *rhs : QPixmap();
+    }
+}
+
+bool dos_qpixmap_isNull(DosPixmap *vptr)
+{
+    auto pixmap = static_cast<QPixmap *>(vptr);
+    return pixmap->isNull();
+}
+
 ::DosQQuickView *dos_qquickview_create()
 {
     return new QQuickView();