Example #1
0
 function reflow(BlockFrameDecorator $block = null)
 {
     $page = $this->_frame->get_root();
     if ($page->is_full()) {
         return;
     }
     $this->_frame->position();
     $style = $this->_frame->get_style();
     $cb = $this->_frame->get_containing_block();
     foreach ($this->_frame->get_children() as $child) {
         if ($page->is_full()) {
             return;
         }
         $child->set_containing_block($cb);
         $child->reflow();
     }
     if ($page->is_full()) {
         return;
     }
     $table = TableFrameDecorator::find_parent_table($this->_frame);
     $cellmap = $table->get_cellmap();
     $style->width = $cellmap->get_frame_width($this->_frame);
     $style->height = $cellmap->get_frame_height($this->_frame);
     $this->_frame->set_position($cellmap->get_frame_position($this->_frame));
 }
Example #2
0
 function reflow(BlockFrameDecorator $block = null)
 {
     $page = $this->_frame->get_root();
     $style = $this->_frame->get_style();
     // Our width is equal to the width of our parent table
     $table = TableFrameDecorator::find_parent_table($this->_frame);
     $cb = $this->_frame->get_containing_block();
     foreach ($this->_frame->get_children() as $child) {
         // Bail if the page is full
         if ($page->is_full()) {
             return;
         }
         $child->set_containing_block($cb["x"], $cb["y"], $cb["w"], $cb["h"]);
         $child->reflow();
         // Check if a split has occured
         $page->check_page_break($child);
     }
     if ($page->is_full()) {
         return;
     }
     $cellmap = $table->get_cellmap();
     $style->width = $cellmap->get_frame_width($this->_frame);
     $style->height = $cellmap->get_frame_height($this->_frame);
     $this->_frame->set_position($cellmap->get_frame_position($this->_frame));
     if ($table->get_style()->border_collapse === "collapse") {
         // Unset our borders because our cells are now using them
         $style->border_style = "none";
     }
 }
Example #3
0
 function reflow(BlockFrameDecorator $block = null)
 {
     $style = $this->_frame->get_style();
     $table = TableFrameDecorator::find_parent_table($this->_frame);
     $cellmap = $table->get_cellmap();
     list($x, $y) = $cellmap->get_frame_position($this->_frame);
     $this->_frame->set_position($x, $y);
     $cells = $cellmap->get_spanned_cells($this->_frame);
     $w = 0;
     foreach ($cells["columns"] as $i) {
         $col = $cellmap->get_column($i);
         $w += $col["used-width"];
     }
     //FIXME?
     $h = $this->_frame->get_containing_block("h");
     $left_space = $style->length_in_pt(array($style->margin_left, $style->padding_left, $style->border_left_width), $w);
     $right_space = $style->length_in_pt(array($style->padding_right, $style->margin_right, $style->border_right_width), $w);
     $top_space = $style->length_in_pt(array($style->margin_top, $style->padding_top, $style->border_top_width), $h);
     $bottom_space = $style->length_in_pt(array($style->margin_bottom, $style->padding_bottom, $style->border_bottom_width), $h);
     $style->width = $cb_w = $w - $left_space - $right_space;
     $content_x = $x + $left_space;
     $content_y = $line_y = $y + $top_space;
     // Adjust the first line based on the text-indent property
     $indent = $style->length_in_pt($style->text_indent, $w);
     $this->_frame->increase_line_width($indent);
     $page = $this->_frame->get_root();
     // Set the y position of the first line in the cell
     $line_box = $this->_frame->get_current_line_box();
     $line_box->y = $line_y;
     // Set the containing blocks and reflow each child
     foreach ($this->_frame->get_children() as $child) {
         if ($page->is_full()) {
             break;
         }
         $child->set_containing_block($content_x, $content_y, $cb_w, $h);
         $this->process_clear($child);
         $child->reflow($this->_frame);
         $this->process_float($child, $x + $left_space, $w - $right_space - $left_space);
     }
     // Determine our height
     $style_height = $style->length_in_pt($style->height, $h);
     $this->_frame->set_content_height($this->_calculate_content_height());
     $height = max($style_height, $this->_frame->get_content_height());
     // Let the cellmap know our height
     $cell_height = $height / count($cells["rows"]);
     if ($style_height <= $height) {
         $cell_height += $top_space + $bottom_space;
     }
     foreach ($cells["rows"] as $i) {
         $cellmap->set_row_height($i, $cell_height);
     }
     $style->height = $height;
     $this->_text_align();
     $this->vertical_align();
 }
Example #4
0
 /**
  * Remove all non table-cell frames from this row and move them after
  * the table.
  */
 function normalise()
 {
     // Find our table parent
     $p = TableFrameDecorator::find_parent_table($this);
     $erroneous_frames = array();
     foreach ($this->get_children() as $child) {
         $display = $child->get_style()->display;
         if ($display !== "table-cell") {
             $erroneous_frames[] = $child;
         }
     }
     //  dump the extra nodes after the table.
     foreach ($erroneous_frames as $frame) {
         $p->move_after($frame);
     }
 }
Example #5
0
 function position(AbstractFrameDecorator $frame)
 {
     $table = Table::find_parent_table($frame);
     $cellmap = $table->get_cellmap();
     $frame->set_position($cellmap->get_frame_position($frame));
 }
Example #6
0
 function render(Frame $frame)
 {
     $style = $frame->get_style();
     if (trim($frame->get_node()->nodeValue) === "" && $style->empty_cells === "hide") {
         return;
     }
     $this->_set_opacity($frame->get_opacity($style->opacity));
     list($x, $y, $w, $h) = $frame->get_border_box();
     // Draw our background, border and content
     if (($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);
     }
     $table = Table::find_parent_table($frame);
     if ($table->get_style()->border_collapse !== "collapse") {
         $this->_render_border($frame);
         $this->_render_outline($frame);
         return;
     }
     // The collapsed case is slightly complicated...
     // @todo Add support for outlines here
     $cellmap = $table->get_cellmap();
     $cells = $cellmap->get_spanned_cells($frame);
     $num_rows = $cellmap->get_num_rows();
     $num_cols = $cellmap->get_num_cols();
     // Determine the top row spanned by this cell
     $i = $cells["rows"][0];
     $top_row = $cellmap->get_row($i);
     // Determine if this cell borders on the bottom of the table.  If so,
     // then we draw its bottom border.  Otherwise the next row down will
     // draw its top border instead.
     if (in_array($num_rows - 1, $cells["rows"])) {
         $draw_bottom = true;
         $bottom_row = $cellmap->get_row($num_rows - 1);
     } else {
         $draw_bottom = false;
     }
     // Draw the horizontal borders
     foreach ($cells["columns"] as $j) {
         $bp = $cellmap->get_border_properties($i, $j);
         $y = $top_row["y"] - $bp["top"]["width"] / 2;
         $col = $cellmap->get_column($j);
         $x = $col["x"] - $bp["left"]["width"] / 2;
         $w = $col["used-width"] + ($bp["left"]["width"] + $bp["right"]["width"]) / 2;
         if ($bp["top"]["style"] !== "none" && $bp["top"]["width"] > 0) {
             $widths = array($bp["top"]["width"], $bp["right"]["width"], $bp["bottom"]["width"], $bp["left"]["width"]);
             $method = "_border_" . $bp["top"]["style"];
             $this->{$method}($x, $y, $w, $bp["top"]["color"], $widths, "top", "square");
         }
         if ($draw_bottom) {
             $bp = $cellmap->get_border_properties($num_rows - 1, $j);
             if ($bp["bottom"]["style"] === "none" || $bp["bottom"]["width"] <= 0) {
                 continue;
             }
             $y = $bottom_row["y"] + $bottom_row["height"] + $bp["bottom"]["width"] / 2;
             $widths = array($bp["top"]["width"], $bp["right"]["width"], $bp["bottom"]["width"], $bp["left"]["width"]);
             $method = "_border_" . $bp["bottom"]["style"];
             $this->{$method}($x, $y, $w, $bp["bottom"]["color"], $widths, "bottom", "square");
         }
     }
     $j = $cells["columns"][0];
     $left_col = $cellmap->get_column($j);
     if (in_array($num_cols - 1, $cells["columns"])) {
         $draw_right = true;
         $right_col = $cellmap->get_column($num_cols - 1);
     } else {
         $draw_right = false;
     }
     // Draw the vertical borders
     foreach ($cells["rows"] as $i) {
         $bp = $cellmap->get_border_properties($i, $j);
         $x = $left_col["x"] - $bp["left"]["width"] / 2;
         $row = $cellmap->get_row($i);
         $y = $row["y"] - $bp["top"]["width"] / 2;
         $h = $row["height"] + ($bp["top"]["width"] + $bp["bottom"]["width"]) / 2;
         if ($bp["left"]["style"] !== "none" && $bp["left"]["width"] > 0) {
             $widths = array($bp["top"]["width"], $bp["right"]["width"], $bp["bottom"]["width"], $bp["left"]["width"]);
             $method = "_border_" . $bp["left"]["style"];
             $this->{$method}($x, $y, $h, $bp["left"]["color"], $widths, "left", "square");
         }
         if ($draw_right) {
             $bp = $cellmap->get_border_properties($i, $num_cols - 1);
             if ($bp["right"]["style"] === "none" || $bp["right"]["width"] <= 0) {
                 continue;
             }
             $x = $right_col["x"] + $right_col["used-width"] + $bp["right"]["width"] / 2;
             $widths = array($bp["top"]["width"], $bp["right"]["width"], $bp["bottom"]["width"], $bp["left"]["width"]);
             $method = "_border_" . $bp["right"]["style"];
             $this->{$method}($x, $y, $h, $bp["right"]["color"], $widths, "right", "square");
         }
     }
 }
Example #7
0
 function position()
 {
     $table = Table::find_parent_table($this->_frame);
     $cellmap = $table->get_cellmap();
     $this->_frame->set_position($cellmap->get_frame_position($this->_frame));
 }
Example #8
0
 /**
  * Determine if a page break is allowed before $frame
  * http://www.w3.org/TR/CSS21/page.html#allowed-page-breaks
  *
  * In the normal flow, page breaks can occur at the following places:
  *
  *    1. In the vertical margin between block boxes. When a page
  *    break occurs here, the used values of the relevant
  *    'margin-top' and 'margin-bottom' properties are set to '0'.
  *    2. Between line boxes inside a block box.
  *
  * These breaks are subject to the following rules:
  *
  *   * Rule A: Breaking at (1) is allowed only if the
  *     'page-break-after' and 'page-break-before' properties of
  *     all the elements generating boxes that meet at this margin
  *     allow it, which is when at least one of them has the value
  *     'always', 'left', or 'right', or when all of them are
  *     'auto'.
  *
  *   * Rule B: However, if all of them are 'auto' and the
  *     nearest common ancestor of all the elements has a
  *     'page-break-inside' value of 'avoid', then breaking here is
  *     not allowed.
  *
  *   * Rule C: Breaking at (2) is allowed only if the number of
  *     line boxes between the break and the start of the enclosing
  *     block box is the value of 'orphans' or more, and the number
  *     of line boxes between the break and the end of the box is
  *     the value of 'widows' or more.
  *
  *   * Rule D: In addition, breaking at (2) is allowed only if
  *     the 'page-break-inside' property is 'auto'.
  *
  * If the above doesn't provide enough break points to keep
  * content from overflowing the page boxes, then rules B and D are
  * dropped in order to find additional breakpoints.
  *
  * If that still does not lead to sufficient break points, rules A
  * and C are dropped as well, to find still more break points.
  *
  * We will also allow breaks between table rows.  However, when
  * splitting a table, the table headers should carry over to the
  * next page (but they don't yet).
  *
  * @param Frame $frame the frame to check
  *
  * @return bool true if a break is allowed, false otherwise
  */
 protected function _page_break_allowed(Frame $frame)
 {
     $block_types = array("block", "list-item", "table", "-dompdf-image");
     Helpers::dompdf_debug("page-break", "_page_break_allowed(" . $frame->get_node()->nodeName . ")");
     $display = $frame->get_style()->display;
     // Block Frames (1):
     if (in_array($display, $block_types)) {
         // Avoid breaks within table-cells
         if ($this->_in_table) {
             Helpers::dompdf_debug("page-break", "In table: " . $this->_in_table);
             return false;
         }
         // Rules A & B
         if ($frame->get_style()->page_break_before === "avoid") {
             Helpers::dompdf_debug("page-break", "before: avoid");
             return false;
         }
         // Find the preceeding block-level sibling
         $prev = $frame->get_prev_sibling();
         while ($prev && !in_array($prev->get_style()->display, $block_types)) {
             $prev = $prev->get_prev_sibling();
         }
         // Does the previous element allow a page break after?
         if ($prev && $prev->get_style()->page_break_after === "avoid") {
             Helpers::dompdf_debug("page-break", "after: avoid");
             return false;
         }
         // If both $prev & $frame have the same parent, check the parent's
         // page_break_inside property.
         $parent = $frame->get_parent();
         if ($prev && $parent && $parent->get_style()->page_break_inside === "avoid") {
             Helpers::dompdf_debug("page-break", "parent inside: avoid");
             return false;
         }
         // To prevent cascading page breaks when a top-level element has
         // page-break-inside: avoid, ensure that at least one frame is
         // on the page before splitting.
         if ($parent->get_node()->nodeName === "body" && !$prev) {
             // We are the body's first child
             Helpers::dompdf_debug("page-break", "Body's first child.");
             return false;
         }
         // If the frame is the first block-level frame, use the value from
         // $frame's parent instead.
         if (!$prev && $parent) {
             return $this->_page_break_allowed($parent);
         }
         Helpers::dompdf_debug("page-break", "block: break allowed");
         return true;
     } else {
         if (in_array($display, Style::$INLINE_TYPES)) {
             // Avoid breaks within table-cells
             if ($this->_in_table) {
                 Helpers::dompdf_debug("page-break", "In table: " . $this->_in_table);
                 return false;
             }
             // Rule C
             $block_parent = $frame->find_block_parent();
             if (count($block_parent->get_line_boxes()) < $frame->get_style()->orphans) {
                 Helpers::dompdf_debug("page-break", "orphans");
                 return false;
             }
             // FIXME: Checking widows is tricky without having laid out the
             // remaining line boxes.  Just ignore it for now...
             // Rule D
             $p = $block_parent;
             while ($p) {
                 if ($p->get_style()->page_break_inside === "avoid") {
                     Helpers::dompdf_debug("page-break", "parent->inside: avoid");
                     return false;
                 }
                 $p = $p->find_block_parent();
             }
             // To prevent cascading page breaks when a top-level element has
             // page-break-inside: avoid, ensure that at least one frame with
             // some content is on the page before splitting.
             $prev = $frame->get_prev_sibling();
             while ($prev && ($prev->is_text_node() && trim($prev->get_node()->nodeValue) == "")) {
                 $prev = $prev->get_prev_sibling();
             }
             if ($block_parent->get_node()->nodeName === "body" && !$prev) {
                 // We are the body's first child
                 Helpers::dompdf_debug("page-break", "Body's first child.");
                 return false;
             }
             // Skip breaks on empty text nodes
             if ($frame->is_text_node() && $frame->get_node()->nodeValue == "") {
                 return false;
             }
             Helpers::dompdf_debug("page-break", "inline: break allowed");
             return true;
             // Table-rows
         } else {
             if ($display === "table-row") {
                 // Simply check if the parent table's page_break_inside property is
                 // not 'avoid'
                 $p = Table::find_parent_table($frame);
                 while ($p) {
                     if ($p->get_style()->page_break_inside === "avoid") {
                         Helpers::dompdf_debug("page-break", "parent->inside: avoid");
                         return false;
                     }
                     $p = $p->find_block_parent();
                 }
                 // Avoid breaking after the first row of a table
                 if ($p && $p->get_first_child() === $frame) {
                     Helpers::dompdf_debug("page-break", "table: first-row");
                     return false;
                 }
                 // If this is a nested table, prevent the page from breaking
                 if ($this->_in_table > 1) {
                     Helpers::dompdf_debug("page-break", "table: nested table");
                     return false;
                 }
                 Helpers::dompdf_debug("page-break", "table-row/row-groups: break allowed");
                 return true;
             } else {
                 if (in_array($display, Table::$ROW_GROUPS)) {
                     // Disallow breaks at row-groups: only split at row boundaries
                     return false;
                 } else {
                     Helpers::dompdf_debug("page-break", "? " . $frame->get_style()->display . "");
                     return false;
                 }
             }
         }
     }
 }