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Direktori : /home2/selectio/www/fms-worksuite/vendor/dompdf/dompdf/src/Renderer/ |
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<?php /** * @package dompdf * @link https://github.com/dompdf/dompdf * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License */ namespace Dompdf\Renderer; use Dompdf\Adapter\CPDF; use Dompdf\Css\Color; use Dompdf\Css\Style; use Dompdf\Dompdf; use Dompdf\Helpers; use Dompdf\Frame; use Dompdf\Image\Cache; /** * Base renderer class * * @package dompdf */ abstract class AbstractRenderer { /** * Rendering backend * * @var \Dompdf\Canvas */ protected $_canvas; /** * Current dompdf instance * * @var Dompdf */ protected $_dompdf; /** * Class constructor * * @param Dompdf $dompdf The current dompdf instance */ function __construct(Dompdf $dompdf) { $this->_dompdf = $dompdf; $this->_canvas = $dompdf->getCanvas(); } /** * Render a frame. * * Specialized in child classes * * @param Frame $frame The frame to render */ abstract function render(Frame $frame); /** * @param Frame $frame * @param float[] $border_box */ protected function _render_background(Frame $frame, array $border_box): void { $style = $frame->get_style(); $color = $style->background_color; $image = $style->background_image; [$x, $y, $w, $h] = $border_box; if ($color === "transparent" && $image === "none") { return; } if ($style->has_border_radius()) { [$tl, $tr, $br, $bl] = $style->resolve_border_radius($border_box); $this->_canvas->clipping_roundrectangle($x, $y, $w, $h, $tl, $tr, $br, $bl); } if ($color !== "transparent") { $this->_canvas->filled_rectangle($x, $y, $w, $h, $color); } if ($image !== "none") { $this->_background_image($image, $x, $y, $w, $h, $style); } if ($style->has_border_radius()) { $this->_canvas->clipping_end(); } } /** * @param Frame $frame * @param float[] $border_box * @param string $corner_style */ protected function _render_border(Frame $frame, array $border_box, string $corner_style = "bevel"): void { $style = $frame->get_style(); $bp = $style->get_border_properties(); [$x, $y, $w, $h] = $border_box; [$tl, $tr, $br, $bl] = $style->resolve_border_radius($border_box); // Short-cut: If all the borders are "solid" with the same color and // style, and no radius, we'd better draw a rectangle if ($bp["top"]["style"] === "solid" && $bp["top"] === $bp["right"] && $bp["right"] === $bp["bottom"] && $bp["bottom"] === $bp["left"] && !$style->has_border_radius() ) { $props = $bp["top"]; if ($props["color"] === "transparent" || $props["width"] <= 0) { return; } $width = (float)$style->length_in_pt($props["width"]); $this->_canvas->rectangle($x + $width / 2, $y + $width / 2, $w - $width, $h - $width, $props["color"], $width); return; } // Do it the long way $widths = [ (float)$style->length_in_pt($bp["top"]["width"]), (float)$style->length_in_pt($bp["right"]["width"]), (float)$style->length_in_pt($bp["bottom"]["width"]), (float)$style->length_in_pt($bp["left"]["width"]) ]; foreach ($bp as $side => $props) { if ($props["style"] === "none" || $props["style"] === "hidden" || $props["color"] === "transparent" || $props["width"] <= 0 ) { continue; } [$x, $y, $w, $h] = $border_box; $method = "_border_" . $props["style"]; switch ($side) { case "top": $length = $w; $r1 = $tl; $r2 = $tr; break; case "bottom": $length = $w; $y += $h; $r1 = $bl; $r2 = $br; break; case "left": $length = $h; $r1 = $tl; $r2 = $bl; break; case "right": $length = $h; $x += $w; $r1 = $tr; $r2 = $br; break; default: break; } // draw rounded corners $this->$method($x, $y, $length, $props["color"], $widths, $side, $corner_style, $r1, $r2); } } /** * @param Frame $frame * @param float[] $border_box * @param string $corner_style */ protected function _render_outline(Frame $frame, array $border_box, string $corner_style = "bevel"): void { $style = $frame->get_style(); $width = $style->outline_width; $outline_style = $style->outline_style; $color = $style->outline_color; if ($outline_style === "none" || $color === "transparent" || $width <= 0) { return; } $offset = $style->outline_offset; [$x, $y, $w, $h] = $border_box; $d = $width + $offset; $outline_box = [$x - $d, $y - $d, $w + $d * 2, $h + $d * 2]; [$tl, $tr, $br, $bl] = $style->resolve_border_radius($border_box, $outline_box); $x -= $offset; $y -= $offset; $w += $offset * 2; $h += $offset * 2; // For a simple outline, we can draw a rectangle if ($outline_style === "solid" && !$style->has_border_radius()) { $x -= $width / 2; $y -= $width / 2; $w += $width; $h += $width; $this->_canvas->rectangle($x, $y, $w, $h, $color, $width); return; } $x -= $width; $y -= $width; $w += $width * 2; $h += $width * 2; $method = "_border_" . $outline_style; $widths = array_fill(0, 4, $width); $sides = ["top", "right", "left", "bottom"]; foreach ($sides as $side) { switch ($side) { case "top": $length = $w; $side_x = $x; $side_y = $y; $r1 = $tl; $r2 = $tr; break; case "bottom": $length = $w; $side_x = $x; $side_y = $y + $h; $r1 = $bl; $r2 = $br; break; case "left": $length = $h; $side_x = $x; $side_y = $y; $r1 = $tl; $r2 = $bl; break; case "right": $length = $h; $side_x = $x + $w; $side_y = $y; $r1 = $tr; $r2 = $br; break; default: break; } $this->$method($side_x, $side_y, $length, $color, $widths, $side, $corner_style, $r1, $r2); } } /** * Render a background image over a rectangular area * * @param string $url The background image to load * @param float $x The left edge of the rectangular area * @param float $y The top edge of the rectangular area * @param float $width The width of the rectangular area * @param float $height The height of the rectangular area * @param Style $style The associated Style object * * @throws \Exception */ protected function _background_image($url, $x, $y, $width, $height, $style) { if (!function_exists("imagecreatetruecolor")) { throw new \Exception("The PHP GD extension is required, but is not installed."); } $sheet = $style->get_stylesheet(); // Skip degenerate cases if ($width == 0 || $height == 0) { return; } $box_width = $width; $box_height = $height; //debugpng if ($this->_dompdf->getOptions()->getDebugPng()) { print '[_background_image ' . $url . ']'; } list($img, $type, /*$msg*/) = Cache::resolve_url( $url, $sheet->get_protocol(), $sheet->get_host(), $sheet->get_base_path(), $this->_dompdf->getOptions() ); // Bail if the image is no good if (Cache::is_broken($img)) { return; } //Try to optimize away reading and composing of same background multiple times //Postponing read with imagecreatefrom ...() //final composition parameters and name not known yet //Therefore read dimension directly from file, instead of creating gd object first. //$img_w = imagesx($src); $img_h = imagesy($src); list($img_w, $img_h) = Helpers::dompdf_getimagesize($img, $this->_dompdf->getHttpContext()); if ($img_w == 0 || $img_h == 0) { return; } // save for later check if file needs to be resized. $org_img_w = $img_w; $org_img_h = $img_h; $repeat = $style->background_repeat; $dpi = $this->_dompdf->getOptions()->getDpi(); //Increase background resolution and dependent box size according to image resolution to be placed in //Then image can be copied in without resize $bg_width = round((float)($width * $dpi) / 72); $bg_height = round((float)($height * $dpi) / 72); list($img_w, $img_h) = $this->_resize_background_image( $img_w, $img_h, $bg_width, $bg_height, $style->background_size, $dpi ); //Need %bg_x, $bg_y as background pos, where img starts, converted to pixel list($bg_x, $bg_y) = $style->background_position; if (Helpers::is_percent($bg_x)) { // The point $bg_x % from the left edge of the image is placed // $bg_x % from the left edge of the background rectangle $p = ((float)$bg_x) / 100.0; $x1 = $p * $img_w; $x2 = $p * $bg_width; $bg_x = $x2 - $x1; } else { $bg_x = (float)($style->length_in_pt($bg_x) * $dpi) / 72; } $bg_x = round($bg_x + (float)$style->length_in_pt($style->border_left_width) * $dpi / 72); if (Helpers::is_percent($bg_y)) { // The point $bg_y % from the left edge of the image is placed // $bg_y % from the left edge of the background rectangle $p = ((float)$bg_y) / 100.0; $y1 = $p * $img_h; $y2 = $p * $bg_height; $bg_y = $y2 - $y1; } else { $bg_y = (float)($style->length_in_pt($bg_y) * $dpi) / 72; } $bg_y = round($bg_y + (float)$style->length_in_pt($style->border_top_width) * $dpi / 72); //clip background to the image area on partial repeat. Nothing to do if img off area //On repeat, normalize start position to the tile at immediate left/top or 0/0 of area //On no repeat with positive offset: move size/start to have offset==0 //Handle x/y Dimensions separately if ($repeat !== "repeat" && $repeat !== "repeat-x") { //No repeat x if ($bg_x < 0) { $bg_width = $img_w + $bg_x; } else { $x += ($bg_x * 72) / $dpi; $bg_width = $bg_width - $bg_x; if ($bg_width > $img_w) { $bg_width = $img_w; } $bg_x = 0; } if ($bg_width <= 0) { return; } $width = (float)($bg_width * 72) / $dpi; } else { //repeat x if ($bg_x < 0) { $bg_x = -((-$bg_x) % $img_w); } else { $bg_x = $bg_x % $img_w; if ($bg_x > 0) { $bg_x -= $img_w; } } } if ($repeat !== "repeat" && $repeat !== "repeat-y") { //no repeat y if ($bg_y < 0) { $bg_height = $img_h + $bg_y; } else { $y += ($bg_y * 72) / $dpi; $bg_height = $bg_height - $bg_y; if ($bg_height > $img_h) { $bg_height = $img_h; } $bg_y = 0; } if ($bg_height <= 0) { return; } $height = (float)($bg_height * 72) / $dpi; } else { //repeat y if ($bg_y < 0) { $bg_y = -((-$bg_y) % $img_h); } else { $bg_y = $bg_y % $img_h; if ($bg_y > 0) { $bg_y -= $img_h; } } } //Optimization, if repeat has no effect if ($repeat === "repeat" && $bg_y <= 0 && $img_h + $bg_y >= $bg_height) { $repeat = "repeat-x"; } if ($repeat === "repeat" && $bg_x <= 0 && $img_w + $bg_x >= $bg_width) { $repeat = "repeat-y"; } if (($repeat === "repeat-x" && $bg_x <= 0 && $img_w + $bg_x >= $bg_width) || ($repeat === "repeat-y" && $bg_y <= 0 && $img_h + $bg_y >= $bg_height) ) { $repeat = "no-repeat"; } // Avoid rendering identical background-image variants multiple times // This is not dependent of background color of box! .'_'.(is_array($bg_color) ? $bg_color["hex"] : $bg_color) // Note: Here, bg_* are the start values, not end values after going through the tile loops! $key = implode("_", [$bg_width, $bg_height, $img_w, $img_h, $bg_x, $bg_y, $repeat]); // FIXME: This will fail when a file with that exact name exists in the // same directory, included in the document as regular image $cpdfKey = $img . "_" . $key; $tmpFile = Cache::getTempImage($img, $key); $cached = ($this->_canvas instanceof CPDF && $this->_canvas->get_cpdf()->image_iscached($cpdfKey)) || ($tmpFile !== null && file_exists($tmpFile)); if (!$cached) { // img: image url string // img_w, img_h: original image size in px // width, height: box size in pt // bg_width, bg_height: box size in px // x, y: left/top edge of box on page in pt // start_x, start_y: placement of image relative to pattern // $repeat: repeat mode // $bg: GD object of result image // $src: GD object of original image // Create a new image to fit over the background rectangle $bg = imagecreatetruecolor($bg_width, $bg_height); $cpdfFromGd = true; switch (strtolower($type)) { case "png": $cpdfFromGd = false; imagesavealpha($bg, true); imagealphablending($bg, false); $src = @imagecreatefrompng($img); break; case "jpeg": $src = @imagecreatefromjpeg($img); break; case "webp": $src = @imagecreatefromwebp($img); break; case "gif": $src = @imagecreatefromgif($img); break; case "bmp": $src = @Helpers::imagecreatefrombmp($img); break; default: return; // Unsupported image type } if ($src == null) { return; } if ($img_w != $org_img_w || $img_h != $org_img_h) { $newSrc = imagescale($src, $img_w, $img_h); imagedestroy($src); $src = $newSrc; } if ($src == null) { return; } //Background color if box is not relevant here //Non transparent image: box clipped to real size. Background non relevant. //Transparent image: The image controls the transparency and lets shine through whatever background. //However on transparent image preset the composed image with the transparency color, //to keep the transparency when copying over the non transparent parts of the tiles. $ti = imagecolortransparent($src); $palletsize = imagecolorstotal($src); if ($ti >= 0 && $ti < $palletsize) { $tc = imagecolorsforindex($src, $ti); $ti = imagecolorallocate($bg, $tc['red'], $tc['green'], $tc['blue']); imagefill($bg, 0, 0, $ti); imagecolortransparent($bg, $ti); } //This has only an effect for the non repeatable dimension. //compute start of src and dest coordinates of the single copy if ($bg_x < 0) { $dst_x = 0; $src_x = -$bg_x; } else { $src_x = 0; $dst_x = $bg_x; } if ($bg_y < 0) { $dst_y = 0; $src_y = -$bg_y; } else { $src_y = 0; $dst_y = $bg_y; } //For historical reasons exchange meanings of variables: //start_* will be the start values, while bg_* will be the temporary start values in the loops $start_x = $bg_x; $start_y = $bg_y; // Copy regions from the source image to the background if ($repeat === "no-repeat") { // Simply place the image on the background imagecopy($bg, $src, $dst_x, $dst_y, $src_x, $src_y, $img_w, $img_h); } elseif ($repeat === "repeat-x") { for ($bg_x = $start_x; $bg_x < $bg_width; $bg_x += $img_w) { if ($bg_x < 0) { $dst_x = 0; $src_x = -$bg_x; $w = $img_w + $bg_x; } else { $dst_x = $bg_x; $src_x = 0; $w = $img_w; } imagecopy($bg, $src, $dst_x, $dst_y, $src_x, $src_y, $w, $img_h); } } elseif ($repeat === "repeat-y") { for ($bg_y = $start_y; $bg_y < $bg_height; $bg_y += $img_h) { if ($bg_y < 0) { $dst_y = 0; $src_y = -$bg_y; $h = $img_h + $bg_y; } else { $dst_y = $bg_y; $src_y = 0; $h = $img_h; } imagecopy($bg, $src, $dst_x, $dst_y, $src_x, $src_y, $img_w, $h); } } elseif ($repeat === "repeat") { for ($bg_y = $start_y; $bg_y < $bg_height; $bg_y += $img_h) { for ($bg_x = $start_x; $bg_x < $bg_width; $bg_x += $img_w) { if ($bg_x < 0) { $dst_x = 0; $src_x = -$bg_x; $w = $img_w + $bg_x; } else { $dst_x = $bg_x; $src_x = 0; $w = $img_w; } if ($bg_y < 0) { $dst_y = 0; $src_y = -$bg_y; $h = $img_h + $bg_y; } else { $dst_y = $bg_y; $src_y = 0; $h = $img_h; } imagecopy($bg, $src, $dst_x, $dst_y, $src_x, $src_y, $w, $h); } } } else { print 'Unknown repeat!'; } imagedestroy($src); if ($cpdfFromGd && $this->_canvas instanceof CPDF) { // Skip writing temp file as the GD object is added directly } else { $tmpDir = $this->_dompdf->getOptions()->getTempDir(); $tmpName = @tempnam($tmpDir, "bg_dompdf_img_"); @unlink($tmpName); $tmpFile = "$tmpName.png"; imagepng($bg, $tmpFile); imagedestroy($bg); Cache::addTempImage($img, $tmpFile, $key); } } else { $bg = null; $cpdfFromGd = $tmpFile === null; } if ($this->_dompdf->getOptions()->getDebugPng()) { print '[_background_image ' . $tmpFile . ']'; } $this->_canvas->clipping_rectangle($x, $y, $box_width, $box_height); // When using cpdf and optimization to direct png creation from gd object is available, // don't create temp file, but place gd object directly into the pdf if ($cpdfFromGd && $this->_canvas instanceof CPDF) { // Note: CPDF_Adapter image converts y position $this->_canvas->get_cpdf()->addImagePng($bg, $cpdfKey, $x, $this->_canvas->get_height() - $y - $height, $width, $height); if (isset($bg)) { imagedestroy($bg); } } else { $this->_canvas->image($tmpFile, $x, $y, $width, $height); } $this->_canvas->clipping_end(); } // Border rendering functions /** * @param float $x * @param float $y * @param float $length * @param array $color * @param float[] $widths * @param string $side * @param string $corner_style * @param float $r1 * @param float $r2 */ protected function _border_dotted($x, $y, $length, $color, $widths, $side, $corner_style = "bevel", $r1 = 0, $r2 = 0) { $this->_border_line($x, $y, $length, $color, $widths, $side, $corner_style, "dotted", $r1, $r2); } /** * @param float $x * @param float $y * @param float $length * @param array $color * @param float[] $widths * @param string $side * @param string $corner_style * @param float $r1 * @param float $r2 */ protected function _border_dashed($x, $y, $length, $color, $widths, $side, $corner_style = "bevel", $r1 = 0, $r2 = 0) { $this->_border_line($x, $y, $length, $color, $widths, $side, $corner_style, "dashed", $r1, $r2); } /** * @param float $x * @param float $y * @param float $length * @param array $color * @param float[] $widths * @param string $side * @param string $corner_style * @param float $r1 * @param float $r2 */ protected function _border_solid($x, $y, $length, $color, $widths, $side, $corner_style = "bevel", $r1 = 0, $r2 = 0) { $this->_border_line($x, $y, $length, $color, $widths, $side, $corner_style, "solid", $r1, $r2); } /** * @param string $side * @param float $ratio * @param float $top * @param float $right * @param float $bottom * @param float $left * @param float $x * @param float $y * @param float $length * @param float $r1 * @param float $r2 */ protected function _apply_ratio($side, $ratio, $top, $right, $bottom, $left, &$x, &$y, &$length, &$r1, &$r2) { switch ($side) { case "top": $r1 -= $left * $ratio; $r2 -= $right * $ratio; $x += $left * $ratio; $y += $top * $ratio; $length -= $left * $ratio + $right * $ratio; break; case "bottom": $r1 -= $right * $ratio; $r2 -= $left * $ratio; $x += $left * $ratio; $y -= $bottom * $ratio; $length -= $left * $ratio + $right * $ratio; break; case "left": $r1 -= $top * $ratio; $r2 -= $bottom * $ratio; $x += $left * $ratio; $y += $top * $ratio; $length -= $top * $ratio + $bottom * $ratio; break; case "right": $r1 -= $bottom * $ratio; $r2 -= $top * $ratio; $x -= $right * $ratio; $y += $top * $ratio; $length -= $top * $ratio + $bottom * $ratio; break; default: return; } } /** * @param float $x * @param float $y * @param float $length * @param array $color * @param float[] $widths * @param string $side * @param string $corner_style * @param float $r1 * @param float $r2 */ protected function _border_double($x, $y, $length, $color, $widths, $side, $corner_style = "bevel", $r1 = 0, $r2 = 0) { list($top, $right, $bottom, $left) = $widths; $third_widths = [$top / 3, $right / 3, $bottom / 3, $left / 3]; // draw the outer border $this->_border_solid($x, $y, $length, $color, $third_widths, $side, $corner_style, $r1, $r2); $this->_apply_ratio($side, 2 / 3, $top, $right, $bottom, $left, $x, $y, $length, $r1, $r2); $this->_border_solid($x, $y, $length, $color, $third_widths, $side, $corner_style, $r1, $r2); } /** * @param float $x * @param float $y * @param float $length * @param array $color * @param float[] $widths * @param string $side * @param string $corner_style * @param float $r1 * @param float $r2 */ protected function _border_groove($x, $y, $length, $color, $widths, $side, $corner_style = "bevel", $r1 = 0, $r2 = 0) { list($top, $right, $bottom, $left) = $widths; $half_widths = [$top / 2, $right / 2, $bottom / 2, $left / 2]; $this->_border_inset($x, $y, $length, $color, $half_widths, $side, $corner_style, $r1, $r2); $this->_apply_ratio($side, 0.5, $top, $right, $bottom, $left, $x, $y, $length, $r1, $r2); $this->_border_outset($x, $y, $length, $color, $half_widths, $side, $corner_style, $r1, $r2); } /** * @param float $x * @param float $y * @param float $length * @param array $color * @param float[] $widths * @param string $side * @param string $corner_style * @param float $r1 * @param float $r2 */ protected function _border_ridge($x, $y, $length, $color, $widths, $side, $corner_style = "bevel", $r1 = 0, $r2 = 0) { list($top, $right, $bottom, $left) = $widths; $half_widths = [$top / 2, $right / 2, $bottom / 2, $left / 2]; $this->_border_outset($x, $y, $length, $color, $half_widths, $side, $corner_style, $r1, $r2); $this->_apply_ratio($side, 0.5, $top, $right, $bottom, $left, $x, $y, $length, $r1, $r2); $this->_border_inset($x, $y, $length, $color, $half_widths, $side, $corner_style, $r1, $r2); } /** * @param $c * @return mixed */ protected function _tint($c) { if (!is_numeric($c)) { return $c; } return min(1, $c + 0.16); } /** * @param $c * @return mixed */ protected function _shade($c) { if (!is_numeric($c)) { return $c; } return max(0, $c - 0.33); } /** * @param float $x * @param float $y * @param float $length * @param array $color * @param float[] $widths * @param string $side * @param string $corner_style * @param float $r1 * @param float $r2 */ protected function _border_inset($x, $y, $length, $color, $widths, $side, $corner_style = "bevel", $r1 = 0, $r2 = 0) { switch ($side) { case "top": case "left": $shade = array_map([$this, "_shade"], $color); $this->_border_solid($x, $y, $length, $shade, $widths, $side, $corner_style, $r1, $r2); break; case "bottom": case "right": $tint = array_map([$this, "_tint"], $color); $this->_border_solid($x, $y, $length, $tint, $widths, $side, $corner_style, $r1, $r2); break; default: return; } } /** * @param float $x * @param float $y * @param float $length * @param array $color * @param float[] $widths * @param string $side * @param string $corner_style * @param float $r1 * @param float $r2 */ protected function _border_outset($x, $y, $length, $color, $widths, $side, $corner_style = "bevel", $r1 = 0, $r2 = 0) { switch ($side) { case "top": case "left": $tint = array_map([$this, "_tint"], $color); $this->_border_solid($x, $y, $length, $tint, $widths, $side, $corner_style, $r1, $r2); break; case "bottom": case "right": $shade = array_map([$this, "_shade"], $color); $this->_border_solid($x, $y, $length, $shade, $widths, $side, $corner_style, $r1, $r2); break; default: return; } } /** * Get the dash pattern and cap style for the given border style, width, and * line length. * * The base pattern is adjusted so that it fits the given line length * symmetrically. * * @param string $style * @param float $width * @param float $length * * @return array */ protected function dashPattern(string $style, float $width, float $length): array { if ($style === "dashed") { $w = 3 * $width; if ($length < $w) { $s = $w; } else { // Scale dashes and gaps $r = round($length / $w); $r = $r % 2 === 0 ? $r + 1 : $r; $s = $length / $r; } return [[$s], "butt"]; } if ($style === "dotted") { // Draw circles along the line // Round caps extend outwards by half line width, so a zero dash // width results in a circle $gap = $width <= 1 ? 2 : 1; $w = ($gap + 1) * $width; if ($length < $w) { $s = $w; } else { // Only scale gaps $l = $length - $width; $r = max(round($l / $w), 1); $s = $l / $r; } return [[0, $s], "round"]; } return [[], "butt"]; } /** * Draws a solid, dotted, or dashed line, observing the border radius * * @param float $x * @param float $y * @param float $length * @param array $color * @param float[] $widths * @param string $side * @param string $corner_style * @param string $pattern_name * @param float $r1 * @param float $r2 */ protected function _border_line($x, $y, $length, $color, $widths, $side, $corner_style = "bevel", $pattern_name = "none", $r1 = 0, $r2 = 0) { /** used by $$side */ [$top, $right, $bottom, $left] = $widths; $width = $$side; // No need to clip corners if border radius is large enough $cornerClip = $corner_style === "bevel" && ($r1 < $width || $r2 < $width); $lineLength = $length - $r1 - $r2; [$pattern, $cap] = $this->dashPattern($pattern_name, $width, $lineLength); // Determine arc border radius for corner arcs $halfWidth = $width / 2; $ar1 = max($r1 - $halfWidth, 0); $ar2 = max($r2 - $halfWidth, 0); // Small angle adjustments to prevent the background from shining through $adj1 = $ar1 / 80; $adj2 = $ar2 / 80; // Adjust line width and corner angles to account for the fact that // round caps extend outwards. The line is actually only shifted below, // not shortened, as otherwise the end dash (circle) will vanish // occasionally $dl = $cap === "round" ? $halfWidth : 0; if ($cap === "round" && $ar1 > 0) { $adj1 -= rad2deg(asin($halfWidth / $ar1)); } if ($cap === "round" && $ar2 > 0) { $adj2 -= rad2deg(asin($halfWidth / $ar2)); } switch ($side) { case "top": if ($cornerClip) { $points = [ $x, $y, $x, $y - 1, // Extend outwards to avoid gaps $x + $length, $y - 1, // Extend outwards to avoid gaps $x + $length, $y, $x + $length - max($right, $r2), $y + max($width, $r2), $x + max($left, $r1), $y + max($width, $r1) ]; $this->_canvas->clipping_polygon($points); } $y += $halfWidth; if ($ar1 > 0 && $adj1 > -22.5) { $this->_canvas->arc($x + $r1, $y + $ar1, $ar1, $ar1, 90 - $adj1, 135 + $adj1, $color, $width, $pattern, $cap); } if ($lineLength > 0) { $this->_canvas->line($x + $dl + $r1, $y, $x + $dl + $length - $r2, $y, $color, $width, $pattern, $cap); } if ($ar2 > 0 && $adj2 > -22.5) { $this->_canvas->arc($x + $length - $r2, $y + $ar2, $ar2, $ar2, 45 - $adj2, 90 + $adj2, $color, $width, $pattern, $cap); } break; case "bottom": if ($cornerClip) { $points = [ $x, $y, $x, $y + 1, // Extend outwards to avoid gaps $x + $length, $y + 1, // Extend outwards to avoid gaps $x + $length, $y, $x + $length - max($right, $r2), $y - max($width, $r2), $x + max($left, $r1), $y - max($width, $r1) ]; $this->_canvas->clipping_polygon($points); } $y -= $halfWidth; if ($ar1 > 0 && $adj1 > -22.5) { $this->_canvas->arc($x + $r1, $y - $ar1, $ar1, $ar1, 225 - $adj1, 270 + $adj1, $color, $width, $pattern, $cap); } if ($lineLength > 0) { $this->_canvas->line($x + $dl + $r1, $y, $x + $dl + $length - $r2, $y, $color, $width, $pattern, $cap); } if ($ar2 > 0 && $adj2 > -22.5) { $this->_canvas->arc($x + $length - $r2, $y - $ar2, $ar2, $ar2, 270 - $adj2, 315 + $adj2, $color, $width, $pattern, $cap); } break; case "left": if ($cornerClip) { $points = [ $x, $y, $x - 1, $y, // Extend outwards to avoid gaps $x - 1, $y + $length, // Extend outwards to avoid gaps $x, $y + $length, $x + max($width, $r2), $y + $length - max($bottom, $r2), $x + max($width, $r1), $y + max($top, $r1) ]; $this->_canvas->clipping_polygon($points); } $x += $halfWidth; if ($ar1 > 0 && $adj1 > -22.5) { $this->_canvas->arc($x + $ar1, $y + $r1, $ar1, $ar1, 135 - $adj1, 180 + $adj1, $color, $width, $pattern, $cap); } if ($lineLength > 0) { $this->_canvas->line($x, $y + $dl + $r1, $x, $y + $dl + $length - $r2, $color, $width, $pattern, $cap); } if ($ar2 > 0 && $adj2 > -22.5) { $this->_canvas->arc($x + $ar2, $y + $length - $r2, $ar2, $ar2, 180 - $adj2, 225 + $adj2, $color, $width, $pattern, $cap); } break; case "right": if ($cornerClip) { $points = [ $x, $y, $x + 1, $y, // Extend outwards to avoid gaps $x + 1, $y + $length, // Extend outwards to avoid gaps $x, $y + $length, $x - max($width, $r2), $y + $length - max($bottom, $r2), $x - max($width, $r1), $y + max($top, $r1) ]; $this->_canvas->clipping_polygon($points); } $x -= $halfWidth; if ($ar1 > 0 && $adj1 > -22.5) { $this->_canvas->arc($x - $ar1, $y + $r1, $ar1, $ar1, 0 - $adj1, 45 + $adj1, $color, $width, $pattern, $cap); } if ($lineLength > 0) { $this->_canvas->line($x, $y + $dl + $r1, $x, $y + $dl + $length - $r2, $color, $width, $pattern, $cap); } if ($ar2 > 0 && $adj2 > -22.5) { $this->_canvas->arc($x - $ar2, $y + $length - $r2, $ar2, $ar2, 315 - $adj2, 360 + $adj2, $color, $width, $pattern, $cap); } break; } if ($cornerClip) { $this->_canvas->clipping_end(); } } /** * @param float $opacity */ protected function _set_opacity(float $opacity): void { if ($opacity >= 0.0 && $opacity <= 1.0) { $this->_canvas->set_opacity($opacity); } } /** * @param float[] $box * @param string $color * @param array $style */ protected function _debug_layout($box, $color = "red", $style = []) { $this->_canvas->rectangle($box[0], $box[1], $box[2], $box[3], Color::parse($color), 0.1, $style); } /** * @param float $img_width * @param float $img_height * @param float $container_width * @param float $container_height * @param array|string $bg_resize * @param int $dpi * * @return array */ protected function _resize_background_image( $img_width, $img_height, $container_width, $container_height, $bg_resize, $dpi ) { // We got two some specific numbers and/or auto definitions if (is_array($bg_resize)) { $is_auto_width = $bg_resize[0] === 'auto'; if ($is_auto_width) { $new_img_width = $img_width; } else { $new_img_width = $bg_resize[0]; if (Helpers::is_percent($new_img_width)) { $new_img_width = round(($container_width / 100) * (float)$new_img_width); } else { $new_img_width = round($new_img_width * $dpi / 72); } } $is_auto_height = $bg_resize[1] === 'auto'; if ($is_auto_height) { $new_img_height = $img_height; } else { $new_img_height = $bg_resize[1]; if (Helpers::is_percent($new_img_height)) { $new_img_height = round(($container_height / 100) * (float)$new_img_height); } else { $new_img_height = round($new_img_height * $dpi / 72); } } // if one of both was set to auto the other one needs to scale proportionally if ($is_auto_width !== $is_auto_height) { if ($is_auto_height) { $new_img_height = round($new_img_width * ($img_height / $img_width)); } else { $new_img_width = round($new_img_height * ($img_width / $img_height)); } } } else { $container_ratio = $container_height / $container_width; if ($bg_resize === 'cover' || $bg_resize === 'contain') { $img_ratio = $img_height / $img_width; if ( ($bg_resize === 'cover' && $container_ratio > $img_ratio) || ($bg_resize === 'contain' && $container_ratio < $img_ratio) ) { $new_img_height = $container_height; $new_img_width = round($container_height / $img_ratio); } else { $new_img_width = $container_width; $new_img_height = round($container_width * $img_ratio); } } else { $new_img_width = $img_width; $new_img_height = $img_height; } } return [$new_img_width, $new_img_height]; } }