FGFS-4.1/OpenSceneGraph
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Added maximum width and maximum height limits to the osgText::Text which

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automatically wraps text which goes beyond these limits.
This commit is contained in:
Robert Osfield
2003-03-06 21:35:33 +00:00
parent 152e60c61b
commit 47087585c0
2 changed files with 94 additions and 1 deletions
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72
src/osgText/Text.cpp
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@@ -25,6 +25,8 @@ Text::Text():
_fontHeight(32),
_characterHeight(32),
_characterAspectRatio(1.0f),
_maximumWidth(0.0f),
_maximumHeight(0.0f),
_alignment(BASE_LINE),
_axisAlignment(XY_PLANE),
_rotation(),
@@ -42,6 +44,8 @@ Text::Text(const Text& text,const osg::CopyOp& copyop):
_fontHeight(text._fontHeight),
_characterHeight(text._characterHeight),
_characterAspectRatio(text._characterAspectRatio),
_maximumWidth(text._maximumWidth),
_maximumHeight(text._maximumHeight),
_text(text._text),
_position(text._position),
_alignment(text._alignment),
@@ -86,6 +90,18 @@ void Text::setCharacterSize(float height,float aspectRatio)
computeGlyphRepresentation();
}
void Text::setMaximumWidth(float maximumWidth)
{
_maximumWidth = maximumWidth;
computeGlyphRepresentation();
}
void Text::setMaximumHeight(float maximumHeight)
{
_maximumHeight = maximumHeight;
computeGlyphRepresentation();
}
void Text::setText(const String& text)
{
@@ -270,10 +286,64 @@ void Text::computeGlyphRepresentation()
local = cursor;
osg::Vec2 bearing(horizontal?glyph->getHorizontalBearing():glyph->getVerticalBearing());
local.x() += bearing.x() * wr;
local.y() += bearing.y() * hr;
// check to see if we are still within line if not move to next line.
switch(_layout)
{
case LEFT_TO_RIGHT:
{
if (_maximumWidth>0.0f)
{
if (local.x()+width>_maximumWidth)
{
startOfLine.y() -= _fontHeight;
cursor = startOfLine;
previous_charcode = 0;
local = cursor;
local.x() += bearing.x() * wr;
local.y() += bearing.y() * hr;
}
}
break;
}
case RIGHT_TO_LEFT:
{
if (_maximumWidth>0.0f)
{
if (local.x()<-_maximumWidth)
{
startOfLine.y() -= _fontHeight;
cursor = startOfLine;
previous_charcode = 0;
local = cursor;
local.x() += bearing.x() * wr;
local.y() += bearing.y() * hr;
}
}
break;
}
case VERTICAL:
if (_maximumHeight>0.0f)
{
if (local.y()<-_maximumHeight)
{
startOfLine.x() += _fontWidth;
cursor = startOfLine;
previous_charcode = 0;
local = cursor;
local.x() += bearing.x() * wr;
local.y() += bearing.y() * hr;
}
}
break;
}
GlyphQuads& glyphquad = _textureGlyphQuadMap[glyph->getTexture()->getStateSet()];