#include <math.h>

#include <helianthus.h>

#include "font.h"



static Font font;


void fontInit() {
	font = createFont("data/fonts/blackcry.ttf");
}


void fontDraw() {
	saveState();
	
	double x = 512;
	double y = 256;
	
	fill(colorByName("1 0 0 0.5"));
	textSize(64*(1+sin(windowGetSeconds()/4)));
	text(x, y, "Here is the\nleft aligned\ntext. VAW.");
	
	noFill();
	textFont(font);
	textAlign(HALIGN_RIGHT, VALIGN_TOP);
	text(x, y, "Here is the\nright aligned\ntext. VAW.");
	
	resetState();
	
	x = 196;
	y = 384;
	double w = 128;
	double h = 96;
	int haligns[] = { HALIGN_LEFT, HALIGN_CENTER, HALIGN_RIGHT };
	int valigns[] = { VALIGN_TOP, VALIGN_CENTER, VALIGN_BOTTOM };
	const char *ht[] = { "left", "center I", "right" };
	const char *vt[] = { "top", "center", "bottom q" };
	for(int j = 0; j < 3; ++j) {
		for(int i = 0; i < 3; ++i) {
			double xx = x + (1-i)*w/2;
			double yy = y + (1-j)*h/2;
			textAlign(haligns[i], valigns[j]);
			if (i == 1 && j == 1) {
				TextLayout layout = createTextLayoutf("%s\n%s", ht[i], vt[j]);
				textLayoutDraw(layout, xx, yy);
				saveState();
				strokeWidth(0.5);
				double ex = 10;
				double l = textLayoutGetLeft(layout);
				double t = textLayoutGetTop(layout);
				double w = textLayoutGetWidth(layout);
				double h = textLayoutGetHeight(layout);
				double a = textLayoutGetTopAscenderLine(layout);
				double x = textLayoutGetTopXLine(layout);
				double b = textLayoutGetBottomBaseline(layout);
				line( xx+l-ex , yy+t    , xx+l+w+ex , yy+t      );
				line( xx+l-ex , yy+t+h  , xx+l+w+ex , yy+t+h    );
				line( xx+l    , yy+t-ex , xx+l      , yy+t+h+ex );
				line( xx+l+w  , yy+t-ex , xx+l+w    , yy+t+h+ex );
				line( xx+l-ex , yy+a    , xx+l+w+ex , yy+a      );
				line( xx+l-ex , yy+x    , xx+l+w+ex , yy+x      );
				line( xx+l-ex , yy+b    , xx+l+w+ex , yy+b      );
				restoreState();
				textLayoutDestroy(layout);
			} else {
				textf(xx, yy, "%s\n%s", ht[i], vt[j]);
			}
		}
	}
	line(x - 1.5*w, y - h/2, x + 1.5*w, y - h/2);
	line(x - 1.5*w, y + h/2, x + 1.5*w, y + h/2);
	line(x - w/2, y - 1.5*h, x - w/2, y + 1.5*h);
	line(x + w/2, y - 1.5*h, x + w/2, y + 1.5*h);
	
	noFill();
	textAlign(HALIGN_CENTER, VALIGN_CENTER);
	const char *chars = "zlpvoxS";
	for(int i = 0; i < 7; ++i)
		textf(x - w/2 + (i + 1)/8.0*w, y + h/2, "%c", chars[i]);
	
	restoreState();
}