#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();

}