Add line spacing to QTextBlockFormat, get/set functions, CSS support

The patch adds line spacing options to Qt, as in all modern word
processors. I primarily checked OpenOffice as a reference for how to
position the lines based on the various types of line spacing as well
as where to do the page breaks. The following functions were added:

void QTextBlockFormat::setLineHeight(qreal height, int heightType)
qreal QTextBlockFormat::lineHeight()
int QTextBlockFormat::lineHeightType()
qreal QTextBlockFormat::lineHeight(qreal scriptLineHeight, qreal scaling)

Here are the HeightTypes available:
QTextBlockFormat::SingleHeight
QTextBlockFormat::ProportionalHeight
QTextBlockFormat::FixedHeight
QTextBlockFormat::AtLeastHeight
QTextBlockFormat::LineDistanceHeight

The following CSS syntax was added:
line-height:150%
line-height:40px
line-height:normal
line-height:40al
line-height:40ld

Merge-request: 2305
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@nokia.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/gui/text/qcssparser.cpp b/src/gui/text/qcssparser.cpp
index dafc8e7..edb08ae 100644
--- a/src/gui/text/qcssparser.cpp
+++ b/src/gui/text/qcssparser.cpp
@@ -122,6 +122,7 @@ static const QCssKnownValue properties[NumProperties - 1] = {
     { "image", QtImage },
     { "image-position", QtImageAlignment },
     { "left", Left },
+    { "line-height", LineHeight },
     { "list-style", ListStyle },
     { "list-style-type", ListStyleType },
     { "margin" , Margin },