Made BrowserBox use the recommended line skip for its font

SDL_ttf provides a separate function for getting the recommended line skip, or
the spacing between two lines of text. When rendering multiple lines of text
this should be used rather than the visual height of the font.

Since the information is only available for TrueTypeFont, a dynamic_cast was
used with a fallback on gcn::Font::getHeight.

Also made some small tweaks but nothing that really affects performance.

Reviewed-by: Yohann Ferreira

1 files changed, 7 insertions, 0 deletions

diff --git a/src/gui/truetypefont.h b/src/gui/truetypefont.h
index 7974a953..97fd7f08 100644
--- a/src/gui/truetypefont.h
+++ b/src/gui/truetypefont.h
@@ -63,6 +63,13 @@ class TrueTypeFont : public gcn::Font
         virtual int getHeight() const;
 
         /**
+         * Returns the height of a line of text. This is not the visual height
+         * as returned by getHeight() but the recommended spacing between lines
+         * of text.
+         */
+        int getLineHeight() const;
+
+        /**
          * @see Font::drawString
          */
         void drawString(gcn::Graphics *graphics,