MagicSetEditor2/src/render/text/font.cpp

//+----------------------------------------------------------------------------+
//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
//| Copyright:    (C) 2001 - 2006 Twan van Laarhoven                           |
//| License:      GNU General Public License 2 or later (see file COPYING)     |
//+----------------------------------------------------------------------------+

// ----------------------------------------------------------------------------- : Includes

#include <render/text/element.hpp>
#include <data/font.hpp>

// ----------------------------------------------------------------------------- : FontTextElement

void FontTextElement::draw(RotatedDC& dc, double scale, const RealRect& rect, const double* xs, DrawWhat what, size_t start, size_t end) const {
	if ((what & draw_as) != draw_as) return; // don't draw
	dc.SetFont(font->font, font->size * scale);
	if (end != start && text.substr(end-1, 1) == _("\n")) end -= 1; // don't draw the newline character at the end
	// draw shadow
	if (font->hasShadow()) {
		dc.SetTextForeground(font->shadow_color);
		dc.DrawText(text.substr(start, end - start), rect.position() + font->shadow_displacement);
	}
	// draw
	dc.SetTextForeground(font->color);
	dc.DrawText(text.substr(start, end - start), rect.position());
}

void FontTextElement::getCharInfo(RotatedDC& dc, double scale, vector<CharInfo>& out) const {
	// font
	dc.SetFont(font->font, font->size * scale);
	// find sizes & breaks
	double prev_width = 0;
	for (size_t i = start ; i < end ; ++i) {
		Char c = text.GetChar(i);
		RealSize s = dc.GetTextExtent(text.substr(start, i - start + 1));
		out.push_back(CharInfo(RealSize(s.width - prev_width, s.height),
						c == _('\n') ? break_style :
						c == _(' ')  ? BREAK_SOFT : BREAK_NO
		             ));
		prev_width = s.width;
	}
}

double FontTextElement::minScale() const {
	return min(font->size, font->scale_down_to) / max(0.01, font->size);
}
double FontTextElement::scaleStep() const {
	return 1. / max(font->size, 1.);
}