146 lines
4.5 KiB
C++
146 lines
4.5 KiB
C++
// -*-c++-*- osgWidget - Code by: Jeremy Moles (cubicool) 2007-2008
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// $Id: Label.cpp 59 2008-05-15 20:55:31Z cubicool $
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#include <osg/Math>
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#include <osgWidget/WindowManager>
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#include <osgWidget/Label>
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namespace osgWidget {
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Label::Label(const std::string& name, const std::string& label):
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Widget (name, 0, 0),
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_textIndex (0),
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_text (new osgText::Text()) {
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_text->setText(label);
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_text->setAlignment(osgText::Text::LEFT_BOTTOM);
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_text->setDataVariance(osg::Object::DYNAMIC);
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// TODO: Make a patch for this!
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// If you're wondering why we don't use this let me explain...
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//
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// _text->setAlignment(osgText::Text::CENTER_CENTER);
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//
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// When you set the position of an osgText::Text object which has a CENTER_CENTER
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// alignment, the internal implementation of osgText may give it values that have
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// a "decimal" portion, which is NO GOOD on orthographic 2D displays where we
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// want "pixel perfect" ratios. Thus, until I can remedy this internally with
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// osgText::Text, I will need to calculate the center myself.
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setColor(0.0f, 0.0f, 0.0f, 0.0f);
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}
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Label::Label(const Label& label, const osg::CopyOp& co):
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Widget (label, co),
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_textIndex (label._textIndex) {
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_text = new osgText::Text(*label._text, co);
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}
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void Label::_calculateSize(const XYCoord& size) {
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if(size.x() && size.y()) setMinimumSize(size.x(), size.y());
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if(getWidth() < size.x()) setWidth(size.x());
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if(getHeight() < size.y()) setHeight(size.y());
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}
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// TODO: This will almost certainly get out of sync. :(
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void Label::parented(Window* parent) {
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// If we've been cloned, use the index of the old text Drawable.
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if(_textIndex) parent->getGeode()->setDrawable(_textIndex, _text.get());
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// Otherwise, add it as new.
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else _textIndex = parent->addDrawableAndGetIndex(_text.get());
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}
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void Label::unparented(Window* parent) {
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if(_textIndex) parent->getGeode()->removeDrawable(_text.get());
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_textIndex = 0;
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}
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void Label::managed(WindowManager* wm) {
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if(wm->isInvertedY()) {
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// We rotate along our X axis, so we need to make sure and translate the
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// text later to preserve centering.
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_text->setAxisAlignment(osgText::Text::USER_DEFINED_ROTATION);
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_text->setRotation(osg::Quat(
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osg::DegreesToRadians(180.0f),
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osg::Vec3(1.0f, 0.0f, 0.0f)
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));
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}
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}
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void Label::positioned() {
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XYCoord size = getTextSize();
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point_type x = osg::round(((getWidth() - size.x()) / 2.0f) + getX());
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point_type y = 0.0f;
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if(getWindowManager() && getWindowManager()->isInvertedY()) y =
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osg::round(((getHeight() - size.y()) / 2.0f) + getY() + size.y())
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;
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else y = osg::round(((getHeight() - size.y()) / 2.0f) + getY());
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// These values are permisable with CENTER_CENTER mode is active.
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// point_type x = round(getX() + (getWidth() / 2.0f));
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// point_type y = round(getY() + (getHeight() / 2.0f));
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/*
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warn() << "Label widget size : " << getWidth() << " x " << getHeight() << std::endl;
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warn() << "Label widget tsize: " << getWidthTotal() << " x " << getHeightTotal() << std::endl;
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warn() << "Label XY coords : " << getX() << " x " << getY() << std::endl;
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warn() << "Label BB in size : " << size.x() << " x " << size.y() << std::endl;
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warn() << "Label xy position : " << x << " y " << y << std::endl;
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warn() << "------------------------------------" << std::endl;
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*/
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_text->setPosition(osg::Vec3(x, y, _calculateZ(getLayer() + 1)));
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}
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void Label::update()
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{
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warn() << "Label::update() not implemented yet."<<std::endl;
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}
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void Label::setLabel(const std::string& label) {
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_text->setText(label);
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_calculateSize(getTextSize());
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}
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void Label::setFont(const std::string& font) {
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_text->setFont(font);
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_calculateSize(getTextSize());
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}
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void Label::setFontSize(unsigned int size) {
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_text->setCharacterSize(size);
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_text->setFontResolution(size, size);
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_calculateSize(getTextSize());
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}
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void Label::setFontColor(const Color& c) {
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_text->setColor(c);
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}
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void Label::setShadow(point_type offset) {
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_text->setBackdropType(osgText::Text::DROP_SHADOW_BOTTOM_RIGHT);
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_text->setBackdropImplementation(osgText::Text::NO_DEPTH_BUFFER);
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_text->setBackdropOffset(offset);
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_calculateSize(getTextSize());
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}
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XYCoord Label::getTextSize() const {
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osg::BoundingBox bb = _text->getBound();
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return XYCoord(
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osg::round(bb.xMax() - bb.xMin()),
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osg::round(bb.yMax() - bb.yMin())
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);
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}
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}
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