From 48b5edbee3573695a152ac4a9b079bde7a7b77d2 Mon Sep 17 00:00:00 2001
From: vsr <vsr@opencascade.com>
Date: Mon, 10 Feb 2020 10:31:27 +0300
Subject: [PATCH] QtxSplash: add option to scale splash screen to given
 width/height

---
 src/Qtx/QtxSplash.cxx | 63 +++++++++++++++++++++++++++++++++++++++++--
 src/Qtx/QtxSplash.h   |  7 ++++-
 2 files changed, 67 insertions(+), 3 deletions(-)

diff --git a/src/Qtx/QtxSplash.cxx b/src/Qtx/QtxSplash.cxx
index 3a5ecf2b8..e3c68a583 100644
--- a/src/Qtx/QtxSplash.cxx
+++ b/src/Qtx/QtxSplash.cxx
@@ -272,10 +272,50 @@ void QtxSplash::setError( const QString& error, const QString& title, const int
                            tr( "&OK" ) );
   }
   else {
-    printf( "QtxSplash::error: %s\n",error.toLatin1().constData() );
+    qCritical( "QtxSplash::error: %s\n", qPrintable( error ) );
   }
 }
 
+/*!
+  \brief Set fixed size of splash screen.
+
+  If size is not set explicitly, it is inherited from image being used.
+  Otherwise, image is rescaled to given size.
+
+  Width and height can be given indepdently; not given dimension
+  (zero of negative value) is ignored.
+
+  \param size fixed splash size
+  \sa fixedSize()
+*/
+void QtxSplash::setSize( const QSize& size )
+{
+  mySize = size;
+  setPixmap( pixmap() );
+}
+
+/*!
+  \brief This is an overloaded function.
+
+  \param w width
+  \param h height
+  \sa fixedSize()
+*/
+void QtxSplash::setSize( int w, int h )
+{
+  setSize( QSize( w, h ) );
+}
+
+/*!
+  \brief Get fixed splash screen's size if it was set.
+  \sa setSize()
+*/
+QSize QtxSplash::fixedSize() const
+{
+  return mySize;
+}
+
+
 /*!
   \brief Set the pixmap that will be used as the splash screen's image.
   \param pixmap spash screen image pixmap
@@ -283,6 +323,9 @@ void QtxSplash::setError( const QString& error, const QString& title, const int
 */
 void QtxSplash::setPixmap( const QPixmap& pixmap )
 {
+  if ( pixmap.isNull() )
+    return;
+
   if ( pixmap.hasAlpha() ) {
     QPixmap opaque( pixmap.size() );
     QPainter p( &opaque );
@@ -294,6 +337,18 @@ void QtxSplash::setPixmap( const QPixmap& pixmap )
   else {
     myPixmap = pixmap;
   }
+
+  int width = fixedSize().width();
+  int height = fixedSize().height();
+  if ( width > 0 || height > 0 ) {
+    QImage img = myPixmap.toImage();
+    img = img.scaled( width > 0 ? width : myPixmap.width(),
+                      height > 0 ? height : myPixmap.height(),
+                      Qt::IgnoreAspectRatio,
+                      Qt::SmoothTransformation );
+    myPixmap = QPixmap::fromImage( img );
+  }
+
   QRect r( 0, 0, myPixmap.size().width(), myPixmap.size().height() );
   resize( myPixmap.size() );
   move( QApplication::desktop()->screenGeometry().center() - r.center() );
@@ -856,7 +911,11 @@ void QtxSplash::repaint()
 void QtxSplash::readSettings( QtxResourceMgr* resMgr, const QString& section )
 {
   QString resSection = section.isEmpty() ? QString( "splash" ) : section;
-  
+
+  // size
+  setSize( resMgr->integerValue( resSection, "width", 0 ),
+           resMgr->integerValue( resSection, "height", 0 ) );
+
   // pixmap
   QString pxname;
   if ( resMgr->value( resSection, "image", pxname ) ) {
diff --git a/src/Qtx/QtxSplash.h b/src/Qtx/QtxSplash.h
index 6add6a654..4a33f2e26 100644
--- a/src/Qtx/QtxSplash.h
+++ b/src/Qtx/QtxSplash.h
@@ -64,6 +64,10 @@ public:
   static void       setStatus( const QString&, const int = -1 );
   static void       setError( const QString&, const QString& = QString(), const int = -1 );
   
+  void              setSize( const QSize& );
+  void              setSize( int, int );
+  QSize             fixedSize() const;
+
   void              setPixmap( const QPixmap& );
   QPixmap           pixmap() const;
   
@@ -152,7 +156,8 @@ private:
       
 private:
   static QtxSplash* mySplash;
-  
+
+  QSize             mySize;             //!< splash size
   QPixmap           myPixmap;           //!< splash pixmap
   QString           myInfo;             //!< constant info
   QString           myMessage;          //!< current status message
-- 
2.39.2