[LyX/master] avoid float-conversion warning and simplify size computation

[Stephan Witt]

commit 43dd383073fc61cfe5f24b87294c4e8698a1827a
Author: Stephan Witt <sw...@lyx.org>
Date:   Fri May 22 21:53:37 2015 +0200

    avoid float-conversion warning and simplify size computation

diff --git a/src/frontends/qt4/GuiView.cpp b/src/frontends/qt4/GuiView.cpp
index 8ce2811..e6fda91 100644
--- a/src/frontends/qt4/GuiView.cpp
+++ b/src/frontends/qt4/GuiView.cpp
@@ -236,24 +236,18 @@ private:
 #endif
        }
 
-       qreal fontSize() {
+       qreal fontSize() const {
                return toqstr(lyxrc.font_sizes[FONT_SIZE_LARGE]).toDouble();
        }
 
-       QPointF textPosition() {
-               return QPointF(splashWidth()/2 - 16, splashHeigth() - 40);
+       QPointF textPosition() const {
+               return QPointF(width_/2 - 16, height_ - 40);
        }
 
-       QSize splashSize() {
-               return  QSize(width_ * pixelRatio(),height_ * pixelRatio());
-       }
-
-       double splashWidth() {
-               return splash_.width()/splashPixelRatio();
-       }
-
-       double splashHeigth() {
-               return splash_.height()/splashPixelRatio();
+       QSize splashSize() const {
+               return  QSize(
+                       static_cast<unsigned int>(width_ * pixelRatio()),
+                       static_cast<unsigned int>(height_ * pixelRatio()));
        }
 
        /// Ratio between physical pixels and device-independent pixels of 
splash image