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<?php
/**
* @package dompdf
* @link http://dompdf.github.com/
* @author Benj Carson <benjcarson@digitaljunkies.ca>
* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
*/
namespace Dompdf\Renderer;
use Dompdf\Frame;
use Dompdf\FrameDecorator\Block as BlockFrameDecorator;
use Dompdf\Helpers;
/**
* Renders block frames
*
* @package dompdf
*/
class Block extends AbstractRenderer
{
/**
* @param Frame $frame
*/
function render(Frame $frame)
{
$style = $frame->get_style();
$node = $frame->get_node();
$dompdf = $this->_dompdf;
$this->_set_opacity($frame->get_opacity($style->opacity));
[$x, $y, $w, $h] = $frame->get_border_box();
if ($node->nodeName === "body") {
$h = $frame->get_containing_block("h") - (float)$style->length_in_pt([
$style->margin_top,
$style->border_top_width,
$style->border_bottom_width,
$style->margin_bottom],
(float)$style->length_in_pt($style->width));
}
$border_box = [$x, $y, $w, $h];
// Draw our background, border and content
$this->_render_background($frame, $border_box);
$this->_render_border($frame, $border_box);
$this->_render_outline($frame, $border_box);
// Handle anchors & links
if ($node->nodeName === "a" && $href = $node->getAttribute("href")) {
$href = Helpers::build_url($dompdf->getProtocol(), $dompdf->getBaseHost(), $dompdf->getBasePath(), $href);
$this->_canvas->add_link($href, $x, $y, $w, $h);
}
$id = $frame->get_node()->getAttribute("id");
if (strlen($id) > 0) {
$this->_canvas->add_named_dest($id);
}
$this->debugBlockLayout($frame, "red", false);
}
/**
* @param Frame $frame
* @param float[] $border_box
*/
protected function _render_background(Frame $frame, array $border_box): void
{
$style = $frame->get_style();
[$x, $y, $w, $h] = $border_box;
if ($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, $bl);
}
if (($bg = $style->background_color) !== "transparent") {
$this->_canvas->filled_rectangle($x, $y, $w, $h, $bg);
}
if (($url = $style->background_image) && $url !== "none") {
$this->_background_image($url, $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 (
in_array($bp["top"]["style"], ["solid", "dashed", "dotted"]) &&
$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"]);
$pattern = $this->_get_dash_pattern($props["style"], $width);
$this->_canvas->rectangle($x + $width / 2, $y + $width / 2, $w - $width, $h - $width, $props["color"], $width, $pattern);
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 => $props) {
list($x, $y, $w, $h) = $border_box;
$length = 0;
$r1 = 0;
$r2 = 0;
if (!$props["style"] ||
$props["style"] === "none" ||
$props["width"] <= 0 ||
$props["color"] == "transparent"
) {
continue;
}
switch ($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;
}
$method = "_border_" . $props["style"];
// 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 = (float) $style->length_in_pt($style->outline_width);
$outline_style = $style->outline_style;
$color = $style->outline_color;
if (!$outline_style || $outline_style === "none" || $color === "transparent" || $width <= 0) {
return;
}
$offset = (float) $style->length_in_pt($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 += $offset * 2;
// For a simple outline, we can draw a rectangle
if (in_array($outline_style, ["solid", "dashed", "dotted"], true)
&& !$style->has_border_radius()
) {
$x -= $width / 2;
$y -= $width / 2;
$w += $width;
$h += $width;
$pattern = $this->_get_dash_pattern($outline_style, $width);
$this->_canvas->rectangle($x, $y, $w, $h, $color, $width, $pattern);
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);
}
}
protected function debugBlockLayout(Frame $frame, ?string $color, bool $lines = false): void
{
$options = $this->_dompdf->getOptions();
$debugLayout = $options->getDebugLayout();
if (!$debugLayout) {
return;
}
if ($color && $options->getDebugLayoutBlocks()) {
$this->_debug_layout($frame->get_border_box(), $color);
if ($options->getDebugLayoutPaddingBox()) {
$this->_debug_layout($frame->get_padding_box(), $color, [0.5, 0.5]);
}
}
if ($lines && $options->getDebugLayoutLines() && $frame instanceof BlockFrameDecorator) {
[$cx, , $cw] = $frame->get_content_box();
foreach ($frame->get_line_boxes() as $line) {
$lw = $cw - $line->left - $line->right;
$this->_debug_layout([$cx + $line->left, $line->y, $lw, $line->h], "orange");
}
}
}
}
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