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<?php |
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/** |
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* @package dompdf |
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* @link https://github.com/dompdf/dompdf |
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* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License |
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*/ |
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namespace Dompdf\Positioner; |
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|
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use Dompdf\FrameDecorator\AbstractFrameDecorator; |
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use Dompdf\FrameReflower\Block; |
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|
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/** |
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* Positions absolutely positioned frames |
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*/ |
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class Absolute extends AbstractPositioner |
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{ |
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|
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/** |
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* @param AbstractFrameDecorator $frame |
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*/ |
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function position(AbstractFrameDecorator $frame): void |
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{ |
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if ($frame->get_reflower() instanceof Block) { |
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$style = $frame->get_style(); |
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[$cbx, $cby, $cbw, $cbh] = $frame->get_containing_block(); |
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|
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// If the `top` value is `auto`, the frame will be repositioned |
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// after its height has been resolved |
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$left = (float) $style->length_in_pt($style->left, $cbw); |
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$top = (float) $style->length_in_pt($style->top, $cbh); |
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|
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$frame->set_position($cbx + $left, $cby + $top); |
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} else { |
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// Legacy positioning logic for image and table frames |
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// TODO: Resolve dimensions, margins, and offsets similar to the |
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// block case in the reflowers and use the simplified logic above |
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$style = $frame->get_style(); |
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$block_parent = $frame->find_block_parent(); |
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$current_line = $block_parent->get_current_line_box(); |
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|
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list($x, $y, $w, $h) = $frame->get_containing_block(); |
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$inflow_x = $block_parent->get_content_box()["x"] + $current_line->left + $current_line->w; |
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$inflow_y = $current_line->y; |
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|
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$top = $style->length_in_pt($style->top, $h); |
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$right = $style->length_in_pt($style->right, $w); |
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$bottom = $style->length_in_pt($style->bottom, $h); |
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$left = $style->length_in_pt($style->left, $w); |
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|
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list($width, $height) = [$frame->get_margin_width(), $frame->get_margin_height()]; |
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|
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$orig_width = $style->get_specified("width"); |
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$orig_height = $style->get_specified("height"); |
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|
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/**************************** |
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* |
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* Width auto: |
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* ____________| left=auto | left=fixed | |
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* right=auto | A | B | |
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* right=fixed | C | D | |
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* |
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* Width fixed: |
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* ____________| left=auto | left=fixed | |
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* right=auto | E | F | |
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* right=fixed | G | H | |
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*****************************/ |
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|
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if ($left === "auto") { |
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if ($right === "auto") { |
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// A or E - Keep the frame at the same position |
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$x = $inflow_x; |
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} else { |
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if ($orig_width === "auto") { |
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// C |
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$x += $w - $width - $right; |
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} else { |
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// G |
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$x += $w - $width - $right; |
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} |
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} |
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} else { |
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if ($right === "auto") { |
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// B or F |
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$x += (float)$left; |
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} else { |
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if ($orig_width === "auto") { |
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// D - TODO change width |
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$x += (float)$left; |
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} else { |
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// H - Everything is fixed: left + width win |
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$x += (float)$left; |
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} |
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} |
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} |
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|
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// The same vertically |
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if ($top === "auto") { |
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if ($bottom === "auto") { |
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// A or E - Keep the frame at the same position |
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$y = $inflow_y; |
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} else { |
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if ($orig_height === "auto") { |
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// C |
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$y += (float)$h - $height - (float)$bottom; |
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} else { |
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// G |
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$y += (float)$h - $height - (float)$bottom; |
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} |
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} |
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} else { |
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if ($bottom === "auto") { |
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// B or F |
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$y += (float)$top; |
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} else { |
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if ($orig_height === "auto") { |
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// D - TODO change height |
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$y += (float)$top; |
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} else { |
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// H - Everything is fixed: top + height win |
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$y += (float)$top; |
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} |
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} |
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} |
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|
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$frame->set_position($x, $y); |
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} |
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} |
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} |
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|
