Bars with rounded corners

[maximal]

Hi there! I want to have bars with rounded corners, not just plain straight-edged ones.

How can I achieve that? With my own output interface? Or, maybe it should be a param in existing output interface?
Could you please tell me where to dig?

[codemasher]

I think this is beyond the capabilities of the current implementation. You would need to implement the drawing algorithm in a way that it checks the state of the neighbour modules and draw the block with rounded corners accordingly. The SVG module is probably the easiest to implement in that way, see the current implementation:

php-qrcode/src/Output/QRMarkup.php

Lines 204 to 229 in 5a110e7

	/**
	* returns a path segment for a single module
	*
	* @see https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/d
	*/
	protected function svgModule(int $x, int $y):string{
	if($this->options->imageTransparent && !$this->matrix->check($x, $y)){
	return '';
	}
	if($this->options->drawCircularModules && !$this->matrix->checkTypes($x, $y, $this->options->keepAsSquare)){
	$r = $this->options->circleRadius;
	return sprintf(
	'M%1$s %2$s a%3$s %3$s 0 1 0 %4$s 0 a%3$s %3$s 0 1 0 -%4$s 0Z',
	($x + 0.5 - $r),
	($y + 0.5),
	$r,
	($r * 2)
	);
	}
	return sprintf('M%1$s %2$s h%3$s v1 h-%4$sZ', $x, $y, 1, 1);
	}

[maximal]

I thought about SVG, yes. Thanks, will dig into that.

[codemasher]

Note that the code block above is currently in the unreleased dev-main (v5) branch.

[Mehd212]

I overridden the function in this way, which worked for me :

    /**
     * returns a path segment for a single module
     *
     * @see https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/d
     */
    protected function module(int $x, int $y, int $M_TYPE):string{

        if(!$this->options->drawLightModules && !$this->matrix->check($x, $y)){
            return '';
        }

        if($this->options->drawCircularModules && !$this->matrix->checkTypeIn($x, $y, $this->options->keepAsSquare)){
            $r = $this->options->circleRadius;

            return sprintf(
                'M%1$s %2$s a%3$s %3$s 0 1 0 %4$s 0 a%3$s %3$s 0 1 0 -%4$s 0Z',
                ($x + 0.5 - $r),
                ($y + 0.5),
                $r,
                ($r * 2)
            );

        }

        // round corners

        // corner top left, top right, bottom left et bottom right
        if (!$this->matrix->check($x, $y +1) && !$this->matrix->check($x -1, $y) && !$this->matrix->check($x + 1, $y) && !$this->matrix->check($x, $y -1)) {
            return sprintf(
                'M%1$s %2$s h0.5 a0.25 0.25 0 0 0 0.25 -0.25 v-0.5 a0.25 0.25 0 0 0 -0.25 -0.25 h-0.5 a0.25 0.25 0 0 0 -0.25 0.25 v0.5 a0.25 0.25 0 0 0 0.25 0.25 Z',
                $x + 0.25,
                $y + 1,
            );
        }

        // corner top left et top right
        if (!$this->matrix->check($x, $y -1) && !$this->matrix->check($x -1, $y) && !$this->matrix->check($x + 1, $y)) {
            return sprintf(
                'M%1$s %2$s h1 v-0.75 a0.25 0.25 0 0 0 -0.25 -0.25 h-0.5 a0.25 0.25 0 0 0 -0.25 0.25  Z',
                $x,
                $y + 1,
            );
        }

        // corner top left et bottom left
        if (!$this->matrix->check($x, $y -1) && !$this->matrix->check($x -1, $y) && !$this->matrix->check($x, $y + 1)) {
            return sprintf(
                'M%1$s %2$s h0.75 v-1 h-0.75 a0.25 0.25 0 0 0 -0.25 0.25 v0.5 a0.25 0.25 0 0 0 0.25 0.25 Z',
                $x + 0.25,
                $y + 1,
            );
        }

        // corner top right et bottom right
        if (!$this->matrix->check($x, $y -1) && !$this->matrix->check($x + 1, $y) && !$this->matrix->check($x, $y + 1)) {
            return sprintf(
                'M%1$s %2$s h0.75 a0.25 0.25 0 0 0 0.25 -0.25 v-0.5 a0.25 0.25 0 0 0 -0.25 -0.25 h-0.75 Z',
                $x,
                $y + 1,
            );
        }

        // corner bottom left et bottom right
        if (!$this->matrix->check($x, $y +1) && !$this->matrix->check($x -1, $y) && !$this->matrix->check($x + 1, $y)) {
            return sprintf(
                'M%1$s %2$s h0.5 a0.25 0.25 0 0 0 0.25 -0.25 v-0.75 h-1 v0.75 a0.25 0.25 0 0 0 0.25 0.25 Z',
                $x + 0.25,
                $y + 1,
            );
        }

        // corner top left
        if (!$this->matrix->check($x, $y -1) && !$this->matrix->check($x -1, $y)) {
            return sprintf(
                'M%1$s %2$s h1 v-1 h-0.75 a0.25 0.25 0 0 0 -0.25 0.25  Z',
                $x,
                $y + 1,
            );
        }

        // corner top right
        if (!$this->matrix->check($x, $y -1) && !$this->matrix->check($x + 1, $y)) {
            return sprintf(
                'M%1$s %2$s h1 v-0.75 a0.25 0.25 0 0 0 -0.25 -0.25 h-0.75 Z',
                $x,
                $y + 1,
            );
        }

        // corner bottom right
        if (!$this->matrix->check($x, $y +1) && !$this->matrix->check($x +1, $y)) {
            return sprintf(
                'M%1$s %2$s h0.75 a0.25 0.25 0 0 0 0.25 -0.25 v-0.75 h-1 Z',
                $x,
                $y + 1,
            );
        }

        // corner bottom left
        if (!$this->matrix->check($x, $y +1) && !$this->matrix->check($x -1, $y)) {
            return sprintf(
                'M%1$s %2$s h0.75 v-1 h-1 v0.75 a0.25 0.25 0 0 0 0.25 0.25 Z',
                $x + 0.25,
                $y + 1,
            );
        }

        return sprintf('M%1$s %2$s h1 v1 h-1Z', $x, $y);
    }

}

That's the result :

Hope that will help someone.

[maximal]

Looks great!