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<?php
/**
 * The background card of the original osu!nextsig design.
 *
 * @author Lemmmy
 * @see Card
 */
class CardRegular extends Card
{
    /**
     * The margin of the entire signature card
     */
    const SIG_MARGIN = 3;

    /**
     * The outer stroke width of the signature card
     */
    const SIG_STROKE_WIDTH = 2;

    /**
     * The inner padding of the signature card
     */
    const SIG_INNER_PADDING = 6;

    /**
     * How much to round the edges of the signature card
     */
    const SIG_ROUNDING = 3;

    /**
     * How much to round the outer edges of the signature card
     */
    const SIG_OUTER_ROUNDING = 3;

    /**
     * How large the triangle strip should be
     */
    const TRIANGLE_STRIP_HEIGHT = 28;

    /**
     * The triangles image to use for the signature card's header
     */
    const IMG_TRIANGLES = "img/triangles_all.png";

    /**
     * Draws the background colour with triangles for the signature
     *
     * @param string $hexColour Hexadecimal colour value for the whole card
     */
    public function drawBackground($hexColour) {
        $width = $this->canvas->getImageWidth();
        $height = $this->canvas->getImageHeight();

        $base = new Imagick();
        $base->newImage($width, $height, new ImagickPixel('transparent'));

        // The background layer - this draws the fill
        $this->drawBackgroundFill($base, $hexColour);

        // Composite the base onto the canvas at margin, margin
        $this->canvas->compositeImage($base, Imagick::COMPOSITE_DEFAULT, 0, 0);
    }

    /**
     * Draws the background's fill for the signature
     *
     * @param Imagick $base The base to draw on
     * @param string $hexColour Hexadecimal colour value for the whole card
     */
    public function drawBackgroundFill($base, $hexColour) {
        $background = new ImagickDraw();
        $background->setFillColor($hexColour);
        $background->roundRectangle(
            self::SIG_MARGIN + (self::SIG_STROKE_WIDTH / 2),
            self::SIG_MARGIN + (self::SIG_STROKE_WIDTH / 2),
            ($this->baseWidth + self::SIG_MARGIN - 1) - (self::SIG_STROKE_WIDTH / 2),
            ($this->baseHeight + self::SIG_MARGIN - 1) - (self::SIG_STROKE_WIDTH / 2),
            self::SIG_OUTER_ROUNDING * 2,
            self::SIG_OUTER_ROUNDING * 2);

        $base->drawImage($background);
    }

    /**
     * Draws the triangle strip for the signature
     *
     * @param string $hexColour Hexadecimal colour value for the whole card
     */
    public function drawTriangleStrip($hexColour) {
        // The base for the triangles strip, to be drawn over the plain
        $darkTriangles = isset($_GET['darktriangles']);

        $backArea = new ImagickDraw();
        $backArea->setFillColor(new ImagickPixel($hexColour));
        $backArea->rectangle(
            self::SIG_MARGIN + self::SIG_STROKE_WIDTH,
            self::SIG_MARGIN + self::SIG_STROKE_WIDTH + 1,
            $this->baseWidth - self::SIG_STROKE_WIDTH + (self::SIG_STROKE_WIDTH / 2) + 1,
            (self::TRIANGLE_STRIP_HEIGHT - self::SIG_STROKE_WIDTH) + (self::SIG_ROUNDING * 4)
        );

        $this->canvas->drawImage($backArea);

        $originalTriangles = new Imagick(self::IMG_TRIANGLES);
        $originalTriangles->cropImage(
            $this->baseWidth, $this->baseHeight,
            $this->baseWidth / 2, $this->baseHeight / 2);

        $triangles = new Imagick();
        $triangles->newImage(
            $this->baseWidth - (self::SIG_STROKE_WIDTH * 2) - 2,
            self::TRIANGLE_STRIP_HEIGHT + self::SIG_STROKE_WIDTH,
            new ImagickPixel($hexColour));
        $triangles = $triangles->textureImage($originalTriangles);

        // The gradient to draw over the triangles
        $trianglesGradient1 = new Imagick();
        $trianglesGradient1->newPseudoImage(
            $this->baseWidth - (self::SIG_STROKE_WIDTH * 2) - 2,
            self::TRIANGLE_STRIP_HEIGHT + self::SIG_STROKE_WIDTH,
            'gradient:' . 'none' . '-' . $hexColour);
        $trianglesGradient1->setImageOpacity(0.6);

        // The second gradient to draw over the triangles
        $trianglesGradient2 = new Imagick();
        $trianglesGradient2->newPseudoImage(
            $this->baseWidth - (self::SIG_STROKE_WIDTH * 2) - 2,
            self::TRIANGLE_STRIP_HEIGHT + self::SIG_STROKE_WIDTH,
            'gradient:' . '#4a4a4a' . '-' . '#313131');

        // Composite the black and white gradient onto the triangles
        $triangles->compositeImage(
            $trianglesGradient2,
            Imagick::COMPOSITE_OVERLAY,
            0,
            0);

        $triangles->setImageOpacity($darkTriangles ? 0.2 : 0.1);

        // Composite the triangles onto the base
        $this->canvas->compositeImage(
            $triangles,
            Imagick::COMPOSITE_DEFAULT,
            self::SIG_MARGIN + self::SIG_STROKE_WIDTH + 1,
            self::SIG_MARGIN + self::SIG_STROKE_WIDTH * 1.5);

        // Composite the triangles gradient onto the base
        $this->canvas->compositeImage($trianglesGradient1,
            Imagick::COMPOSITE_DEFAULT,
            self::SIG_MARGIN + self::SIG_STROKE_WIDTH + 1,
            self::SIG_MARGIN + self::SIG_STROKE_WIDTH * 1.5);
    }

    /**
     * Draws the shadow of the card
     */
    public function drawShadow($hexColour) {
        $onlineIndicator = isset($_GET['onlineindicator']) ? $_GET['onlineindicator'] : false;
        $online = $onlineIndicator == 1 || $onlineIndicator == 3 ? Utils::isUserOnline($this->user['username']) : false;

        $colour = $online ? new ImagickPixel($hexColour) : new ImagickPixel('black');

        $shadow = new Imagick();
        $shadow->newImage(
            $this->canvas->getImageWidth(),
            $this->canvas->getImageHeight(),
            new ImagickPixel('transparent'));
        $shadow->setImageBackgroundColor($colour);

        $shadowArea = new ImagickDraw();
        $shadowArea->setFillColor($colour);
        $shadowArea->roundRectangle(
            0,
            0,
            $this->baseWidth - 1,
            $this->baseHeight - 2,
            self::SIG_ROUNDING,
            self::SIG_ROUNDING
        );

        $shadow->drawImage($shadowArea);
        $shadow->shadowImage($online ? 40 : 15, 1.5, 0, 0);

        $this->canvas->compositeImage($shadow, Imagick::COMPOSITE_DEFAULT, 0, 1);
    }

    /**
     * Draws the white area of the card
     */
    public function drawPlainArea() {
        $plainArea = new ImagickDraw();
        $plainArea->setFillColor("white");
        $plainArea->roundRectangle(
            self::SIG_MARGIN + self::SIG_STROKE_WIDTH + 1,
            self::SIG_MARGIN + self::SIG_STROKE_WIDTH + self::TRIANGLE_STRIP_HEIGHT,
            $this->baseWidth - self::SIG_STROKE_WIDTH + (self::SIG_STROKE_WIDTH / 2) + 1,
            $this->baseHeight - self::SIG_STROKE_WIDTH + (self::SIG_STROKE_WIDTH / 2) + 1,
            self::SIG_ROUNDING,
            self::SIG_ROUNDING
        );

        $this->canvas->drawImage($plainArea);
    }

    /**
     * Draws the stroke over the whole card
     *
     * @param string $hexColour [Hexadecimal colour value for the card stroke]
     */
    public function drawFinalStroke($hexColour) {
        $cardStrokeImage = new Imagick();
        $cardStrokeImage->newPseudoImage($this->canvas->getImageWidth(), $this->canvas->getImageHeight(), 'canvas:transparent');

        $cardStroke = new ImagickDraw();
        $cardStroke->setFillColor(new ImagickPixel($hexColour));

        $cardStroke->roundRectangle(
            self::SIG_MARGIN + (self::SIG_STROKE_WIDTH / 2),
            self::SIG_MARGIN + (self::SIG_STROKE_WIDTH / 2),
            ($this->baseWidth + self::SIG_MARGIN - 1) - (self::SIG_STROKE_WIDTH / 2),
            ($this->baseHeight + self::SIG_MARGIN - 1) - (self::SIG_STROKE_WIDTH / 2),
            self::SIG_OUTER_ROUNDING * 2,
            self::SIG_OUTER_ROUNDING * 2);

        $cardStrokeImage->drawImage($cardStroke);

        $roundImage = new Imagick();
        $roundImage->newPseudoImage($this->canvas->getImageWidth(), $this->canvas->getImageHeight(), 'canvas:transparent');

        $roundMask = new ImagickDraw();
        $roundMask->setFillColor(new ImagickPixel('black'));
        $roundMask->roundRectangle(
            self::SIG_MARGIN + self::SIG_STROKE_WIDTH * 2,
            self::SIG_MARGIN + self::SIG_STROKE_WIDTH * 2,
            ($this->baseWidth + self::SIG_MARGIN) - self::SIG_STROKE_WIDTH * 2 - 1,
            ($this->baseHeight + self::SIG_MARGIN) - self::SIG_STROKE_WIDTH * 2 - 1,
            self::SIG_ROUNDING,
            self::SIG_ROUNDING
        );

        $roundImage->drawImage($roundMask);

        $cardStrokeImage->compositeImage(
            $roundImage,
            Imagick::COMPOSITE_DSTOUT,
            0,
            0
        );

        $this->canvas->compositeImage($cardStrokeImage, \Imagick::COMPOSITE_DEFAULT, 0, 0);
    }

    public function draw($canvas, $hexColour, $template, $baseWidth, $baseHeight) {
        parent::draw($canvas, $hexColour, $template, $baseWidth, $baseHeight);

        $this->drawShadow($hexColour);
        $this->drawBackground($hexColour);
        $this->drawPlainArea();
        $this->drawTriangleStrip($hexColour);
        $this->drawFinalStroke($hexColour);
    }
}