NAME

PDF::Table - A utility class for building table layouts in a PDF::Builder (or PDF::API2) object.

SYNOPSIS

Rather than cluttering up the following documentation with (or PDF::API2) additions, wherever it refers to PDF::Builder, understand that you can substitute PDF::API2 to use that product instead EXCEPT where noted.

use PDF::Builder;
use PDF::Table;

my $pdftable = new PDF::Table;
my $pdf = new PDF::Builder(-file => "table_of_lorem.pdf");
my $page = $pdf->page();

# some data to lay out
my $some_data =[
   ["1 Lorem ipsum dolor",
   "Donec odio neque, faucibus vel",
   "consequat quis, tincidunt vel, felis."],
   ["Nulla euismod sem eget neque.",
   "Donec odio neque",
   "Sed eu velit."],
   # ... and so on
];

$left_edge_of_table = 50;
# build the table layout
# note: ignoring return values array
$pdftable->table(
    # required parameters
    $pdf,
    $page,
    $some_data,
    'x' => $left_edge_of_table,
    'w' => 495,
    'y' => 500,
    'h' => 300,
    # some optional parameters
    'next_y'          => 750,
    'next_h'          => 500,
    'padding'         => 5,
    'padding_right'   => 10,
    'bg_color_odd'    => "gray",
    'bg_color_even'   => "lightblue", # cell bg color for even rows
    'max_word_length' => 50, # 50 between forced splits
 );

# do other stuff with $pdf
$pdf->save();
...

EXAMPLE

For a complete working example or initial script look into distribution's 'examples' folder.

DESCRIPTION

This class is a utility for use with the PDF::Builder (or PDF::API2, see note above) module from CPAN. It can be used to display text data in a table layout within a PDF. The text data must be in a 2D array (such as returned by a DBI statement handle fetchall_arrayref() call). PDF::Table will automatically add as many new pages as necessary to display all of the data. Various layout properties, such as font, font size, cell padding, and background color can be specified for each column and/or for even/odd rows. Also a (non)repeated header row with different layout properties can be specified.

See the "METHODS" section for complete documentation of every parameter.

COMPATIBILITY

Starting with version 1.000, several behaviors have changed (for the better, I believe). Nevertheless, there may be some users who prefer the old behaviors. To keep everybody happy, it is possible to easily revert to the old behaviors. Near the top of Table.pm, look for a section labeled COMPATIBILITY WITH OLDER VERSIONS. You can change settings here to match old behaviors:

repeating headers: The old default for the repeat setting for a header was '0' (do not repeat after a table has been split across a page). I believe that most users will want to automatically repeat a header row at the start of each table fragment, but you can change this behavior if you wish. Change $repeat_default from 1 to 0 to get the old behavior (or, explicitly give repeat => 0 in the header properties settings).
which rows are 'odd' (and which are 'even'): PDF::Table decided which rows were odd/even (background and foreground colors, etc) in an inconsistent manner, especially if a header was used (whether repeated or not). Now, the first data row (excluding headers) is "odd", and all rows after that alternate "even", "odd", etc., even across page breaks. If you want the old behavior, it can be requested. Change $oddeven_default from 1 to 0 to get the old behavior.
default cell padding: The old default for padding around the contents of a cell was 0. It is now 2pt. Change $padding_default from 2 to 0 to get the old behavior.
behavior of borders: The old behavior was calling both the frame around the table and the cell-divider rules as "border", and using the same settings for both. This has been changed to separate the two classes, with "border" referring to the outside framework, and "rules" referring to the dividers. Note that "rules" still inherit from "border", so an explicit definition of rules => 0 (to hide interior rules) or another width (line weight) may still be needed to override the "border" setting for interior dividers.

Maintaining compatibility

Near the top of file Table.pm, look for my $compat_mode = 0;. PDF::Table is shipped with a flag of 0 to use the new features of the library. If you have a pressing need to maintain compatibility with older versions of the library, you may change the value to 1. Note that a flag of 1 will break some of the t-tests, because of different padding defaults resulting in different text locations on the page.

Run-time changes

If you do not wish to change the PDF::Table code section to permanently change old-versus-new behavior, you can use the compatibility flag in the settings to temporarily change the variables listed above.

compatibility => [ 0, 0, 0 ]

will restore all behaviors to the old style, while

compatibility => [ 1, 0, 2 ]

will change only the designation of "odd/even" rows (element 1) to the old behavior, while leaving header repeat (element 0) and default padding (element 2) in the new behavior.

METHODS

new()

my $pdf_table = new PDF::Table;
   or
my $pdf_table = PDF::Table->new();

Description: Creates a new instance of the class.
Parameters: There are no required parameters. You may pass $pdf, $page, $data, and %options; or can defer this until the table() method invocation (the usual technique).
Returns: Reference to the new instance

table()

Generate output:

my ($final_page, $number_of_pages, $final_y) = table($pdf, $page, $data, %settings)

or, just report row sizes:

my @v_sizes = table($pdf, $page, $data, %settings, 'ink' => 0)

Description

Generates a multi-row, multi-column table into an existing PDF document, based on provided data set and settings.

Parameters

$pdf      - a PDF::Builder instance representing the document being created
$page     - a PDF::Builder::Page instance representing the current page of 
            the document
$data     - an ARRAY reference to a 2D data structure that will be used 
            to build the table
%settings - HASH with geometry and formatting parameters

$data is normally an m x n matrix of strings, each string containing the content text of that cell, and arranged with each row being an anonymous array of strings. For example, a table of 3 rows of 4 columns would be

$data = [
  [ 'c1', 'c2', 'c3', 'c4' ],  # row 1
  [ 'c1', 'c2', 'c3', 'c4' ],  # row 2
  [ 'c1', 'c2', 'c3', 'c4' ],  # row 3
        ];

For PDF::Builder ONLY:

If you wish to enable markup (Markdown or HTML) for a cell, $data has the same structure, except that a cell with markup is itself an anonymous array of three items: a string describing the markup ('none', 'md1', 'html', or 'pre'), a string or anonymous array of strings representing the text and markup for the cell, and an anonymous hash of settings pertaining to the column() call. See PDF::Builder's POD for Content::Text for details.

Instead of plain text cell 'This is plain text', you can do something like:

[ 'html', 
  '<p><font color="green">This is green text.</font></p>',
  { 'font-family'=>'Serif', 'font-size'=>15, 'para'=>[0,0] } ]

Remember, this works only with PDF::Builder, and not with PDF::API2. See the "Column.pl" example on PDF::Builder for some examples. Automatic cell sizing will not work with this, so you need to use the size table parameter to specify relative cell widths.

End of PDF::Builder ONLY:

For full %settings description see section "Table settings" below.

This method will add more pages to the PDF instance as required, based on the formatting options and the amount of data.

Returns

If actually creating PDF output, the return value is a 3 item list where

$final_page - A PDF::Builder::Page instance that the table ends on
$number_of_pages - The count of pages that the table spans
$final_y - The Y coordinate of the table bottom, so that additional 
           content can be added on the same page ($final_page)

If just requesting the table size ('ink' => 0), the return value is an N+3 item list where

item [0] is the overall table length (height) in points
item [1] is the header height in points (0 if no header used)
item [2] is the footer height in points (currently 0)
item [3] is the height of data row 1
item [4] is the height of data row 2
 ...
item [N+3] is the height of data row N

See examples/vsizes.pl for some examples of determining sizes of a table and its rows. This may be useful information for you in deciding whether there is space on this page to fit the complete table, or if you should go to the top of the next page. It could be used to figure how to set h to fit complete rows on a page (not splitting rows), or even how to re-order the rows to most efficiently display them (on the fewest number of pages) without splitting any row.

Two things to note:

1. The table data must be refreshed before calling the table method a second time (to actually output PDF, with ink = 1).

2. If the table spills over onto a new page when outputting the PDF (ink = 1), you will need to retrieve the new $page hash via the return code. Actually, you would need to do this even if you are not querying table sizes!

Example

my $pdf  = new PDF::Builder;
my $page = $pdf->page();
my $data = [
    ['foo1','bar1','baz1'],
    ['foo2','bar2','baz2']
];
my %settings = (
    'x' => 10,
    'w' => 570,
    'y' => 220,
    'h' => 180,
);

my ($final_page, $number_of_pages, $final_y) = 
    $pdftable->table( $pdf, $page, $data, %options );

Table settings

Unless otherwise specified, all dimensional and geometry units used are measured in points. Line counts are not used anywhere.

"Even" rows start with the first data (non-header) row. Think of this first row as number zero (an even number). Even rows alternate with odd rows. The odd/even flag is not reset when a table is split across pages. If a table fragment ends on an odd row, the next fragment (on the next page), starting the next row, will start with an even row. If a row is split across pages, it will resume with the same odd/even setting as on the previous page. If you desire to have the old (previous) odd/even behavior, see "COMPATIBILITY".

The name (key) of any table setting hash element may be given with or without a leading dash (hyphen). A leading dash is allowed for compatibility with older versions of PDF::Table, but is DEPRECATED! It is recommended that the dash be omitted in new code, and removed from old code before November 2022.

Note: if you use a deprecated setting name, or a setting beginning with a hyphen '-', PDF::Table will update the settings list with the preferred name. It does this by inserting the item using the preferred, non-hyphen name, and then deletes the deprecated one. Due to peculiarities in the way Perl copies arrays, hashes, and references; it is possible that your input settings hash may end up being modified! This normally will not be a cause for concern, but you should be aware of this behavior in case you wish to reuse all or part of a PDF::Table settings list (hash) for other purposes (or another table) -- it may have been slightly modified.

Note that any "Color specifier" is not limited to a name (e.g., 'black') or a 6-digit hex specification (e.g., '#3366CC'). See the PDF::Builder writeup on specifying colors for CMYK, L*a*b, HSV, and other methods.

Mandatory global settings

There are some mandatory parameters for setting table geometry and position on the first (initial) or only page of the table. It is up to you to tell PDF::Table where to start (upper left corner) the table, and its width and maximum height on this page.

x - X coordinate of upper left corner of the table.

The left edge of the sheet (media) is 0. Note that this X will be used for any spillover of the table to additional page(s), so you cannot have spillover (continuation) rows starting at a different X.

Value: can be any number satisfying 0 ≤ X < PageWidth

Default: No default value

'x' => 10,

y - Y coordinate of upper left corner of the table on the initial page.

Value: can be any number satisfying 0 < y < PageHeight (depending on space availability when embedding a table)

Default: No default value

'y' => 327,

Deprecated name: start_y (will go away in the future!)

w - width of the table starting from x.

Note that this width will be used for any spillover of the table to additional page(s), so you cannot have spillover (continuation) rows with a different width.

Value: can be any number satisfying 0 < w < PageWidth - x

Default: No default value

'w'  => 570,

NOTE: If PDF::Table finds that the table width needs to be increased to accommodate the requested text and formatting, it will output a warning. This could lead to undesired results. Possible solutions to keep the table from being widened include:

1) Increase table width (w)
2) Decrease font size (font_size)
3) Choose a narrower font
4) Decrease "max_word_length" parameter, so long words are split into
    shorter chunks
5) Rotate media to landscape (if it is portrait)
6) Use a larger (wider) media size

h - Height of the table on the initial (current) page.

Think of this as the maximum height (Y dimension) of the start of the table on this page. This would be the current Y location less any bottom margin. Normally you would let as much as possible fit on the page, but it's possible that you might want to split the table at an earlier point, to put more on the next (spill) page.

Value: can be any number satisfying 0 < h < PageHeight - Current Y position

Default: No default value

'h' => 250,

Deprecated name: start_h (will go away in the future!)

Optional settings

These are settings which are not absolutely necessary, although their use may result in a much more pleasing appearance for the table. They all have a "reasonable" default (or inheritance from another setting).

Optional Global Settings

These settings apply only to the entire table, and cannot be used to specify cell, column, or row properties. A global setting may only occur once.

next_h - Height of the table on any additional page.

Think of this as the maximum height (Y dimension) of any overflow (spill) table portions on following pages. It is highly recommended that you explicitly specify this setting as the full (body content) height of a page, rather than having PDF::Table try to figure out a good value and give a warning.

Value: can be any number satisfying 0 < next_h < PageHeight - y

You need to leave a non-negative amount of space at the bottom of the page.

Default: Media height * 80% (80% of the paper height) You will receive a warning if next_h is needed for a spill page and you did not provide it!

'next_h'  => 700,

next_y - Y coordinate of upper left corner of the table at any additional page.

Think of this as the starting Y position of any overflow (spill or continuation) table portions on following pages. It is highly recommended that you explicitly specify this setting to be at the top of the body content of a page, rather than having PDF::Table try to figure out a good value and give a warning.

Value: can be any number satisfying 0 < next_y < PageHeight

Default: Media height * 90% (10% down from the top of the paper) You will receive a warning if next_y is needed for a spill page and you did not provide it!

'next_y'  => 750,

ink - Whether to actually write the table, or to measure the table size

You may want to know how high (tall) the actual table will be, before making a decision whether to start the table on this page, or another (typically, the top of the next page). You might want to know if there is space for two or more small tables on this page, or where best to split a table (give an h value to avoid splitting a row). You may also decide to rearrange data rows, if this will make better use of available space.

The default ink value is 1 (to output to the PDF file). If set to 0, only the height measurements (total, header, footer, each data row), in points, will be returned.

Notes:

1. No "footer" can currently be defined. Space is reserved in the output list for a possible future implementation.

2. No matter if the header is repeated on each page, only one instance will be returned in the heights list. Think of the table as fitting on a single page, no matter how long it is, so don't forget to add in the (repeated) header height for each expected page of output!

3. If you have exceptionally heavy (thick) top and bottom border lines, you might want to add in some extra height (half the thickness of each) to the overall height of the table, to account for this.

Value: 0 (return height only) or 1 (actually write the table)

Default: 1 (write out the table)

'ink'  => 0,

Caution: Currently, ink is ignored for cells with markup; their content will be written out regardless of ink. We do plan to support ink for markup cells in the not-too-distant future.

size - Specified column widths.

The default behavior of PDF::Table is to calculate the width needed for each column, based on the longest word, content size, and optional minimum and maximum settings. As an alternative, you may give a string specifying the widths of all columns, one entry per column. An entry may be a fixed width (number and unit), or a relative width to be allocated from remaining space after the fixed width columns are removed from the table width.

If no unit is given, 'pt' (big points, 1/72 inch) are assumed. If no number is given, '1' is assumed (not recommended, except for '*'). The following units are supported:

pt - points (1/72 inch)
in - inches (72 points)
cm - centimeters (28.3 points)
mm - millimeters (2.83 points)
em - ems (width of 'M', depends on table default font)
ex - exs (width of 'x', depends on table default font)

These are all absolute (fixed) sizes. If using font-dependent units (ems and exs), be aware of the overall font and font-size in use by PDF::Table (default is normally 12pt Times-Roman).

There are also relative or allocatable sizes, specified with the unit '*'. After all fixed-size columns have been processed, whatever table width that is left over will be distributed among the remaining (relative) columns proportional to the number for each column (e.g., 2* gets twice the width that * gets).

Value: a string containing one entry per column

Each entry is separated by one or more whitespaces (e.g., blanks). Numbers are unsigned (positive) and may be integers or real numbers (with decimal point). The unit follows immediately (no spaces between number and unit). Note that any column minimum or maximum width settings will be ignored!

Default: None. If not given, widths will be calculated for the columns.

'size'  => '* 3.5in 1.7* 4cm',

new_page_func - CODE reference to a function that returns a PDF::Builder::Page instance. See section "New Page Function Hook" below.

'new_page_func'  => $code_ref,

cell_render_hook - CODE reference to a function called with the current cell coordinates. See section "Cell Render Hook" below.

'cell_render_hook'  => $code_ref,

header_props - HASH reference to specific settings for the Header row of the table. See section "Header Row Properties" below.

'header_props' => $hdr_props,

row_props - HASH reference to specific settings for each row of the table. See section "Row Properties" below.

'row_props' => $my_row_props,

column_props - HASH reference to specific settings for each column of the table. See section "Column Properties" below.

'column_props' => $col_props,

cell_props - HASH reference to specific settings for each column of the table. See section "Cell Properties" below.

'cell_props' => $cell_props,

border_w - Width of table border lines.

h_border_w - Width of horizontal border lines (top and bottom of the table). Overrides 'border_w' value for horizontal usage. Note that if the table spills over onto following pages, only the very first top and very last bottom table border will be full width. Dividers on row boundaries will be 1pt wide ($border_w_default) solid lines, and where a row is divided within its content, a dashed (pattern $dashed_rule_default) 1pt wide line is used.

v_border_w - Width of vertical border lines. Overrides 'border_w' value for vertical usage.

Value: can be any positive number. When set to 0, it will disable border lines. This is the line thickness for drawing a border.

Default: 1 ($border_w_default)

The border is the outside frame around the table. It does not enter into table height or width calculations, so be sure to set your x and w settings to allow for the width of vertical borders, and your y or next_y and h or next_h settings to allow for the width (thickness or height) of the horizontal borders, especially if you make them more than a Point or two in thickness (line width).

'border_w'     => 3,     # border width is 3
'h_border_w'   => 1,     # horizontal borders will be 1, overriding 3
'v_border_w'   => undef, # vertical borders will be 3, as it will 
                         # fall back to 'border_w'

Note that both borders and rules overlay the exact boundary between two cells (i.e., the centerline). That is, one half of a rule or border will overlay the adjoining cells. Rules do not expand the size of the table, although borders will (by a total of their thickness/width). If you set particularly thick (wide) rules, pay attention to adding some padding on the appropriate side(s), so that valuable content is not overlaid. For cells along the outer border, one half the width of a border will overlay the cell, so account for this in the padding specification.

Deprecated names: border (now 'border_w'), horizontal_borders (now 'h_border_w'), and vertical_borders (now 'v_border_w'); will go away in the future!

border_c - Border color for all borders.

Value: Color specifier as 'name' or '#rrggbb'

Default: 'black' ($fg_color_default)

'border_c' => 'red',

Deprecated name: border_color (will go away in the future!)

The same color is used for both the horizontal and vertical borders.

Optional Cell, Column, Row, or Global Settings

These settings can be specified to apply to the entire table, or more narrowly applied to the header row (in header_props hash), one or more rows (in row_props array), one or more columns (in column_props array), or one or more individual cells (in cell_props hash).

If a setting is specified in more than one place, the order of precedence is as follows: a header property (header row only), followed by a cell property, followed by a column property, followed by a row property, followed by a global setting, and finally, any hard-coded default value (if required).

A global setting may only occur once (although it may be overridden by cell, column, or row usage of the same setting).

default_text - A string to use if no content (text) is defined for a cell.

It is also used if a cell has exhausted its given text content, and has been split over a page break. This can happen if other cells in the row have much more text content than this cell. Therefore, it might be a good idea to not use a default such as "no cell content", as this could be confusing to readers who have seen content for this cell on the previous page.

Note that max_word_length splitting is not applied to the default text, so be careful about using long words.

If you want different effects for different rows, columns, or cells, you can override the global default setting. If you want (No content) for the first printout of a cell (split over two or more pages) and - for second and later printouts, you could leave the global default as '-' and simply give the cell the text "(No content)" (no longer really empty, but you get the idea). If you have some content for a cell, and want no further entry after it runs out of content, you could set default_text to no further entry, and so on.

Value: any string (can be a blank ' ' or an empty string '').

Default: '-' ($empty_cell_text)

max_word_length - Breaks long words

It may be necessary to break up long words (like serial numbers, hashes, etc.) to fit within a column, by adding a space after every Nth symbol, unless a space (x20) is found already in the text.

Note that this does not add a hyphen (dash)! It merely ensures that there will be no runs of non-space characters longer than N characters, reducing the chance of forcing an overly wide column.

Value: can be any positive integer number (character count)

Default: 20

'max_word_length' => 25,    # Will add a space after every 25 symbols
                            # unless there is a natural break (space)

padding - Padding applied to every cell

padding_top - top cell padding, overrides 'padding'

padding_right - right cell padding, overrides 'padding'

padding_left - left cell padding, overrides 'padding'

padding_bottom - bottom padding, overrides 'padding'

Value: can be any non-negative number (≥ 0)

Default padding: 2. ($padding_default)

See "COMPATIBILITY" for returning to the old value of 0.

Default padding_* 'padding'

'padding'        => 5,     # all sides cell padding
'padding_top'    => 8,     # top cell padding, overrides 'padding'
'padding_right'  => 6,     # right cell padding, overrides 'padding'
'padding_left'   => 2,     # left cell padding, overrides 'padding'
'padding_bottom' => undef, # bottom padding will be 5, as it will fall
                           # back to 'padding' value

font - instance of PDF::Builder::Resource::Font defining the font to be used in the table (or a subsection of it).

Value: can be any PDF::Builder::Resource::* type of font

Default: 'Times' core font with latin1 encoding

'font' => $pdf->corefont("Helvetica", -encoding => "latin1"),

CAUTION: Only TrueType and OpenType fonts (ttfont call) can make use of multibyte encodings such as 'utf8'. Errors will result if you attempt to use 'utf8', etc. with corefont, psfont, etc. font types! For these, you must only specify a single-byte encoding.

font_size - Size of the font that will be used in the table (or a subsection of it).

Value: can be any positive number

Default: 12 ($font_size_default)

'font_size' => 16,

fg_color - Font color for all text.

bg_color - Background color for all text.

Value: Color specifier as 'name' or '#rrggbb' (or other suitable color specification format)

Default: 'black' text on (transparent) background. In other words, there is no default background color. The exception is for any header row, where the default colors are #000066 (dark blue, $h_fg_color_default) on #FFFFAA (light yellow, $h_bg_color_default).

'fg_color'      => '#333333',

Deprecated names: font_color, background_color (both will go away in the future!)

fg_color_odd - Font color for odd rows (override fg_color).

fg_color_even - Font color for even rows (override fg_color).

bg_color_odd - Background color for odd rows (override bg_color).

bg_color_even - Background color for even rows (override bg_color).

Value: Color specifier as 'name' or '#rrggbb' (or other suitable color specification format)

'fg_color_odd'  => 'purple',
'fg_color_even' => '#00FF00',
'bg_color_odd'  => 'gray',
'bg_color_even' => 'lightblue',

Deprecated names: font_color_odd, font_color_even, background_color_odd, background_color_even (all will go away in the future!)

Note that *_color_odd/even usually make the most sense as global settings, although it is possible to use them within columns (see chess.pl example), and even rows and cells, but not header rows.

underline - Underline specifications for text in the table.

Value: 'auto', integer of distance (below baseline), or arrayref of distance & thickness (more than one pair will provide multiple underlines). Negative distance gives strike-through. [] ('none' also works for PDF::Builder) gives no underline.

Note that it is unwise to underline all content in the table! It should be used selectively to emphasize important text, such as header content, or certain cells. Unfortunately, there is currently no way to turn underlining off and on within a cell.

Default: none

Deprecated name: font_underline (will go away in the future!)

min_rh - Desired minimum row height.

This setting will be honored only if min_rh > font_size + padding_top + padding_bottom (i.e., it is taller than the calculated minimum value).

This setting doesn't usually make sense when used in a column_props or a cell_props, but it is possible to do, and may be useful in certain situations.

Value: can be any positive number

Default: font_size + padding_top + padding_bottom

'min_rh' => 24,

Deprecated name: row_height (will go away in the future!)

justify - Alignment of text in a cell.

Value: One of 'left', 'right', 'center'

Default: 'left'

min_w - Minimum width of this cell or column.

PDF::Table will set a cell (and the column it's in) minimum width to fit the longest word (after splitting on max_word_length) found in the text. This amount may be increased to min_w. A column should be no narrower than its widest minimum width, but could be larger in order to fill out the table width.

Value: can be any number satisfying 0 < min_w < w

Default: Auto calculated

Note that min_w is usually used for a column_props to set the column minimum width. If used in a row_props, it will act as a global setting; if used in a cell_props, that will force the minimum width for the cell's column.

max_w - Maximum width of this column.

PDF::Table will set a cell (and the column it's in) maximum width to fit the total length of the text content. This will seldom be actually used, but max_w may be used to reduce this maximum. When columns are being widened in order to meet the desired table width, it will try to honor the maximum width setting and avoid adding any width to a column already at its maximum width (but this cannot be guaranteed).

Value: can be any number satisfying 0 < min_w ≤ max_w < w

Default: Auto calculated

rule_w - Width of table rule lines (internal table dividers).

h_rule_w - Width of horizontal rules (bottom of a cell). Overrides 'rule_w' value for horizontal usage.

v_rule_w - Width of vertical rules (left side of a cell). Overrides 'rule_w' value for vertical usage.

Value: can be any positive number. When set to 0, it will disable rules. This is the line thickness for drawing a rule.

Default: 1 (corresponding border value)

A rule is a line bordering a cell in the table. While it does not enter into table height or width calculations, be sure to set your padding settings to allow sufficient clearance of cell content, especially if you make the rules more than a Point or two in thickness (line width). Note that a cell only defines and draws its left and bottom rules -- the top rule is defined in the cell or row above, and the right rule is defined in the cell or column to the right of this one.

'rule_w'     => 3,     # rule width is 3
'h_rule_w'   => 1,     # horizontal rules will be 1, overriding 3
'v_rule_w'   => undef, # vertical rules will be 3, as it will 
                       # fall back to 'rule_w'

Note that both borders and rules overlay the exact boundary between two cells (i.e., the centerline). That is, one half of a rule or border will overlay the adjoining cells. Rules do not expand the size of the table. If you set particularly thick (wide) rules, pay attention to adding some padding on the appropriate side(s), so that valuable content is not overlaid. For cells along the outer border, a border will be drawn instead of a rule.

Cell rules inherit thickness and color from the border settings, so if you want no internal rules, you need to set

'rule_w'     => 0,     # no rules

rule_c - Rule color for all rules.

h_rule_c - Rule color for horizontal (bottom) rules, overriding rule_c for this usage.

v_rule_c - Rule color for vertical (left) rules, overriding rule_c for this usage.

Value: Color specifier as 'name' or '#rrggbb'

Default: 'black' (corresponding border value)

'rule_c' => 'red',

New Page Function Hook

new_page_func is a CODE reference to a function that returns a PDF::Builder::Page instance.

If used, the parameter 'new_page_func' must be a function reference which, when executed, will create a new page and will return the object to the module. For example, you can use it to put Page Title, Page Frame, Page Numbers and other content that you need. Also if you need a different paper size and orientation than the default US-Letter, e.g., B2-Landscape, you can use this function ref to set it up for you. For more info about creating pages, refer to PDF::Builder PAGE METHODS Section. Don't forget that your function must return a page object created with the PDF::Builder page() method. $code_ref can be something like \&new_page.

'new_page_func'  => $code_ref,

The $code_ref may be an inline sub definition (as show below), or a regular named sub (e.g., 'new_page()') referenced as \&new_page. The latter may be cleaner than inlining, if the routine is quite long.

An example of reusing a saved PDF page as a template:

my $pdf      = PDF::API2->new();
my $template = PDF::API2->open('pdf/template.pdf');
my $new_page_func = sub { return $pdf->import_page($template, 1); }

table(
    ...
    new_page_func => $new_page_func,
    ...

This will call a function to grab a copy of a template PDF's page 1 and insert it as the new last page of the PDF, as the starting point for the next overflow (continuation) page of the table, if needed. Note that the $template->openpage(1) call is unsuitable for this purpose, as it does not insert the page into the current PDF.

You can also create a blank page and prefill it with desired content:

my $pdf      = PDF::API2->new();
my $new_page_func = sub { 
    my $page = $pdf->page(); # so far, no difference from default behavior
    $page->mediaBox(...);  # set page size/orientation, etc.
    my $text = $page->text();
    # set font, placement, etc.
    $text->text(...);  # write header, footer, etc.
    ...
    return $page;
}

table(
    ...
    new_page_func => $new_page_func,
    ...

If new_page_func is not defined, PDF::Table will simply call $pdf->page() to generate a new, blank, "next" page.

Note that this function is not called for the first page of a table. That one uses the current $page parameter passed to the table() call. It is only called when needed for overflow (next_y and next_h) pages, where it replaces the $page parameter with a new page framework. You may want to consider using the same function to create your other (non-table) pages, assuming you want the same format (PDF content) across all pages of the table.

Cell Render Hook

cell_render_hook is a CODE reference to a function called with the current cell coordinates. If used, the parameter cell_render_hook must be a function reference. It is most useful for creating special items within a text block, such as a URL link inside of a cell. The following example adds a link in the first column of each non-header row:

'cell_render_hook'  => sub {
    my ($page, $first_row, $row, $col, $x, $y, $w, $h) = @_;

    # Do nothing except for first column (and not a header row)
    return unless ($col == 0);
    return if ($first_row);

    # Create link
    my $value = $list_of_vals[$row-1];
    my $url = "https://${hostname}/app/${value}";

    my $annot = $page->annotation();
    $annot->url( $url, -rect => [$x, $y, $x+$w, $y+$h] );
},

Header Row Properties

If the 'header_props' parameter is used, it should be a hashref. Passing an empty HASH will trigger a header row initialized with Default values. There is no 'data' variable for the content, because the module assumes that the first table row will become the header row. It will copy this row and put it on every new page if the 'repeat' parameter is set.

repeat - Flag showing if header row should be repeated on every new page.

Value: 0,1 1-Yes/True, 0-No/False

Default: 1 ($repeat_default)

See "COMPATIBILITY" if you wish to change it back to the old behavior of 0.

my $hdr_props = {
    'font'       => $pdf->corefont("Helvetica", -encoding => "latin1"),
    'font_size'  => 18,
    'fg_color'   => '#004444',
    'bg_color'   => 'yellow',
    'repeat'     => 0,
    'justify'    => 'center',
};

Row Properties

If the 'row_props' parameter is used, it should be an arrayref of hashrefs, with one hashref for each row of the table. The rows are counted from top to bottom, so the hash reference at $row_props[0] will hold properties for the first row (from top to bottom). If you DO NOT want to give properties for a row, but to give for another, just insert an empty hash reference into the array for the row that you want to skip. This will cause the counting to proceed as expected and the properties to be applied at the right rows.

Each hashref can contain any of the keys shown below:

Example:

my $row_props = [
    # This is an empty hash to indicate default properties for first row
    {},
    # the next hash will hold the properties for the second row from 
    # top to bottom.
    {
        'min_rh'    => 75,        # Minimum row height of 75
        'justify'   => 'right',   # Right text alignment
        'font'      => $pdf->corefont("Helvetica", 
                                      -encoding => "latin1"),
        'font_size' => 10,
        'fg_color'  => 'blue',
        'bg_color'  => '#FFFF00',
    },
    # etc.
];

There are no settings unique to rows. Do be aware of when "row 0" may refer to header row properties!

Column Properties

If the 'column_props' parameter is used, it should be an arrayref of hashrefs, with one hashref for each column of the table. The columns are counted from left to right, so the hash reference at $col_props[0] will hold properties for the first column (from left to right). If you DO NOT want to give properties for a column, but to give for another, just insert an empty hash reference into the array for the column that you want to skip. This will cause the counting to proceed as expected and the properties to be applied at the right columns.

Each hashref can contain any of the keys shown below:

Example:

my $col_props = [
    # This is an empty hash to indicate default properties for first col.
    {},
    # the next hash will hold the properties for the second column from 
    # left to right.
    {
        'min_w'     => 100,       # Minimum column width of 100
        'max_w'     => 150,       # Maximum column width of 150
        'justify'   => 'right',   # Right text alignment
        'font'      => $pdf->corefont("Helvetica", 
                                      -encoding => "latin1"),
        'font_size' => 10,
        'fg_color'  => 'blue',
        'bg_color'  => '#FFFF00',
    },
    # etc.
];

There are no settings unique to columns.

NOTE: If 'min_w' and/or 'max_w' parameter is used in 'col_props', keep in mind that it may be overridden by the calculated minimum/maximum cell width so that the table can be created. When this happens, a warning will be issued with some suggestions on what can be done. In cases of a conflict between column formatting and odd/even row formatting, 'col_props' will override odd/even.

Cell Properties

If the 'cell_props' parameter is used, it should be an arrayref with arrays of hashrefs (of the same dimension as the data array) with one hashref for each cell of the table.

Each hashref can contain any of the keys shown below:

colspan - Span this cell over multiple columns to the right.

Value: can be any positive number less than the number of columns to the right of the current column

Default: undef

NOTE: If you want to have regular columns after a colspan, you have to provide undef for the columns that should be spanned

NOTE: If you use colspan to span a column, but provide data for it, your table will be mangled: the spanned-but-data-provided-column will be rendered! But, as HTML works the same way, we do not consider this a bug.

Example:

# row0 col1 should span 2 cols:
@data = ( [ 'r1c1', 'r1c2', 'r1c3' ], ['r2c1+',undef,'r2c3'] );
# note: ignoring return values array
$tab->table( $pdf, $page, \@data, %TestData::required,
  'cell_props' => [
      [],
      [{'colspan' => 2}]
  ]
);

See the file examples/colspan.pl for detailed usage.

Example:

my $cell_props = [
    [ # This array is for the first row (0). 
      # If header_props is defined, it will override these settings.
        {    # Row 0 cell 0
            'bg_color'  => '#AAAA00',
            'fg_color'  => 'yellow',
            'underline' => [ 2, 2 ],
        },

        # etc.
    ],
    [ # Row 1 (first data row, if header_props given)
        {    # Row 1 cell 0
            'bg_color' => '#CCCC00',
            'fg_color' => 'blue',
        },
        {    # Row 1 cell 1
            'bg_color' => '#BBBB00',
            'fg_color' => 'red',
        },
        # etc.
    ],
    [ # Row 2
        {    # Row 2 cell 0 span cell 1
            'colspan' => 2
        },
        # etc.
    ],
    # etc.
];

OR

my $cell_props = [];
$cell_props->[1][0] = {
    # Row 2 cell 1
    'bg_color' => '#CCCC00',
    'fg_color' => 'blue',
};

text_block()

my ($width_of_last_line, $ypos_of_last_line, $left_over_text) = 
    text_block( $txt, $data, %settings)

Description

Utility method to create a block of text. The block may contain multiple paragraphs (input $data separated by implicit or explicit newlines \n). It is mainly used internally, but you can use it from outside for placing formatted text anywhere on the sheet.

NOTE: This method will NOT add more pages to the PDF instance if the space is not enough to place the string inside the block. Leftover text will be returned and has to be handled by the caller - i.e., add a new page and a new block with the leftover.

Parameters

$txt  - a PDF::Builder::Page::Text instance representing the text tool.
$data - a string that will be placed inside the block, broken up into
        lines that fit within the indicated width.
%settings - HASH with geometry and formatting parameters. Note that
            several parameters are mandatory.

Returns

The return value is a 3 item list where

$width_of_last_line - Width of last line in the block
$final_y - The Y coordinate of the block bottom so that additional 
           content can be added after it
$left_over_text - Text that did not fit in the provided box geometry.

Example

# PDF::Builder objects
my $page = $pdf->page();
my $txt  = $page->text();

my %settings = (
    # MANDATORY position and table size
    'x' => 10,
    'y' => 570,
    'w' => 220,
    'h' => 180,

    # OPTIONAL PARAMETERS
    'leading'  => $font_size*1.15 | $distance_between_lines,
    'align'    => "left|right|center|justify|fulljustify",
                    default: left
    'max_word_length' => $optional_max_word_chars_between_splits
                    default: 20
    'parspace' => $optional_vertical_space_before_paragraph,
                    default: 0 extra vertical space

    # Only one of the following parameters can be given.
    # They override each other, in the order given. C<hang> is the 
    # highest weight.
    'hang'     => $optional_hanging_text_to_lead_a_paragraph,
    'flindent' => $optional_indent_of_first_line,
    'fpindent' => $optional_indent_of_first_paragraph,
    'indent'   => $optional_indent_of_text_to_every_non_first_line,
);

my ( $width_of_last_line, $final_y, $left_over_text ) = 
     $pdftable->text_block( $txt, $data, %settings );

VERSION

1.005

AUTHOR

Daemmon Hughes

DEVELOPMENT

Further development Versions 0.02 -- 0.11 - Desislav Kamenov

Further development since Ver: 0.12 - Phil Perry

COPYRIGHT AND LICENSE

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.7 or, at your option, any later version of Perl 5 you may have available. Note that Perl 5.10 is the minimum supported level.

PLUGS

by Daemmon Hughes

Much of the original development work on this module was sponsored by Stone Environmental Inc. (www.stone-env.com).

The text_block() method is a slightly modified copy of the one from Rick Measham's PDF::API2 tutorial at http://pdfapi2.sourceforge.net/cgi-bin/view/Main/YourFirstDocument

by Desislav Kamenov (@deskata on Twitter)

The development of this module was supported by SEEBURGER AG (www.seeburger.com) till year 2007

Thanks to my friends Krasimir Berov and Alex Kantchev for helpful tips and QA during development of versions 0.9.0 to 0.9.5

Thanks to all GitHub contributors!

CONTRIBUTION

PDF::Table is on GitHub. You are more than welcome to contribute!

https://github.com/PhilterPaper/PDF-Table

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NAME

SYNOPSIS

EXAMPLE

DESCRIPTION

COMPATIBILITY

Maintaining compatibility

Run-time changes

METHODS

new()

table()

Table settings

Mandatory global settings

Optional settings

Optional Global Settings

Optional Cell, Column, Row, or Global Settings

New Page Function Hook

Cell Render Hook

Header Row Properties

Row Properties

Column Properties

Cell Properties

text_block()

VERSION

AUTHOR

DEVELOPMENT

COPYRIGHT AND LICENSE

PLUGS

CONTRIBUTION

SEE ALSO

Module Install Instructions