/**
* TODO items for text:
* 1) Test multi-line text rendering
* 2) Accept color codes during text rendering in the form of \Cx (x is the index color)
* 3) Font selection
* For testing there is a lua script
*
* We can increase performance if we pre-calculate some values and cache them so that we
* don't have to keep calling text_extends and do some of the calculations
* also we shouldn't draw text smaller then XX pixels when rendered on screen.
*/
void LCVText::draw(LcPainter& painter, const LcDrawOptions &options, const lc::geo::Area& rect) const {
bool modified = false;
painter.font_size(height());
painter.select_font_face("stick3.ttf");
TextExtends te = painter.text_extends(text_value().c_str());
double alignX = 0.0;
double alignY = 0.0;
// double alignX, alignY;
// The idea of height() * .2 is just a average basline offset. Don't this value to seriously,
// we could get it from font exists but that sounds over exaggerating for the moment.
switch (valign()) {
case lc::TextConst::VAMiddle:
alignX += 0.0;
alignY += -height() / 2. + (height() * .2);
break;
case lc::TextConst::VABottom:
alignX += 0.0;
alignY += -height() + (height() * .2);
break;
case lc::TextConst::VABaseline:
alignX += 0.0;
alignY += 0.0;
break;
case lc::TextConst::VATop:
alignX += 0.0;
alignY += 0.0 + (height() * .2);
break;
default:
break;
}
// Horizontal Align:
switch (halign()) {
case lc::TextConst::HALeft:
alignX += - te.width;
alignY += 0.;
break;
case lc::TextConst::HACenter:
alignX += - te.width / 2.0;
alignY += 0.;
break;
case lc::TextConst::HAMiddle:
alignX += - te.width / 2.0;
alignY += 0.;
break;
case lc::TextConst::HARight:
alignX += 0.;
alignY += 0.;
break;
default:
break;
}
painter.save();
painter.translate(insertion_point().x(), -insertion_point().y());
painter.rotate(-angle());
painter.translate(alignX, -alignY);
painter.move_to(0., 0.);
painter.text(text_value().c_str());
painter.stroke();
painter.restore();
if (modified) {
painter.restore();
}
}
void LCVText::draw(LcPainter* painter, LcDrawOptions* options, const lc::geo::Area& rect) const {
bool modified = false;
modified = true;
painter->save();
if (this->selected()) {
painter->source_rgba(
options->selectedColor().red(),
options->selectedColor().green(),
options->selectedColor().blue(),
options->selectedColor().alpha()
);
} else {
painter->source_rgba(
layers().front()->color().red(),
layers().front()->color().green(),
layers().front()->color().blue(),
layers().front()->color().alpha()
);
}
// double letterSpacing = 3.0;
// double wordSpacing = 6.75;
// double lineSpacingFactor = 1.0;
// lc::geo::Coordinate letterPos = lc::geo::Coordinate(0.0, -9.0);
// lc::geo::Coordinate letterSpace = lc::geo::Coordinate(letterSpacing, 0.0);
// lc::geo::Coordinate space = lc::geo::Coordinate(wordSpacing, 0.0);
lc::geo::Coordinate textSize(Text::boundingBox().maxP() - Text::boundingBox().minP());
// Vertical Align:
double vSize = 9.0;
double alignX = insertion_point().x();
double alignY = insertion_point().y();
// double alignX, alignY;
switch (valign()) {
case Text::VAMiddle:
alignX += 0.0;
alignY += vSize / 2.0;
break;
case Text::VABottom:
alignX += 0.0;
alignY += vSize + 3;
break;
case Text::VABaseline:
alignX += 0.0;
alignY += vSize;
break;
default:
break;
}
// Horizontal Align:
switch (halign()) {
case Text::HAMiddle:
alignX += (0. - textSize.x() / 2.0);
alignY += (0. - (vSize + textSize.y() / 2.0 + Text::boundingBox().minP().y()));
break;
case Text::HACenter:
alignX += (0. - textSize.x() / 2.0);
alignY += alignY + (0.0);
break;
case Text::HARight:
alignX += alignX + (0. - textSize.x());
alignY += alignY + (0.0);
break;
default:
break;
}
double angle_;
// Rotate:
if (halign() == Text::HAAligned || halign() == Text::HAFit) {
angle_ = insertion_point().angleTo(second_point());
} else {
angle_ = angle();
}
const char* str = text_value().c_str();
painter->text(alignX, alignY, str, angle_, height());
painter->stroke();
if (modified) {
painter->restore();
}
}