Michael Robinton > Graphics-ColorPicker > Graphics::ColorPicker

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Module Version: 0.17   Source  

NAME ^

  Graphics::ColorPicker : A perl module for WYSIWYG web 
  applications that allow selection of HEX color numbers

SYNOPSIS ^

  use Graphics::ColorPicker;
    or
  require  Graphics::ColorPicker;

  make_page($path_to_images);
  send_page(\$html_txt,$type);
  $time_string = http_date($time);
  $name = script_name;
  $butabref = buttontext([optional array ref])
  $html_text=frames($websafe);
  $html_text = msie_frame;
  $html_text=picker($darkimg,$liteimg,$size,$bsize,greyimg);
  $html_text=no_picker;
  $html_text=cp216_ds($clrdot,$border,$square)
  $javascript_text = jslib;
  $html=make_buttons(\%look_n_feel,$url,$active,\@buttons,$xtra);
  $html_text=pluck($color);
  $html_text=hex_update($hex_color);

SAMPLE WEBSITE - 24 million color picker ^

http://www.bizsystems.net/downloads/graphics/demo2.html

http://www.bizsystems.net/downloads/graphics/demo.html

DESCRIPTION ^

This module generates a set of palettes to select a HEX or DECIMAL color number via a web browser. make_page() can be called by javascript from your web page and will set the HEX value in a variable in the calling page and scope. The selector page can be created for 24 million or web safe colors only.

  <script language=javascript1.1>
  var colorhex = '';
  var w;
  function pop() {
    if (document.forms.color.what.checked){w=180;}else{w=630;}
    var colorwin = open("","colorpicker",
    "width=" + w + ",height=440,status=no,directories=no," +
    "location=no,menubar=no,scrollbars=no,toolbar=no");
    if (colorwin.opener == null) newin.opener = self;  
    colorwin.document.close();
    colorwin.focus();
    return true;
  }
  </script>
  <body>
  <form name="color" onSubmit="return(pop());"
   action="p_gen.cgi" target="colorpicker">   
  <input type=text name=hex size=10><br>
  <input type=checkbox name=what value=wo> web safe colors only<br>
  <input type=submit value="Pop Picker Window">
  </form>

  See B<examples/demo.html> and B<scripts/p_gen.cgi>
  Read INSTALL

NOTE: as of version 0.13 ColorPicker can be used in a captive frame to dynamically update color values in the DOM.

  See B<examples/demo2.html>, 
      B<examples/colorbar.html> and
      B<scripts/p_gen2.cgi>
make_page($path_to_images);
  Generate Color Picker Pages

  This is the only routine that really needs to be called
  externally. You could roll your own from the following
  calls for a special purpose, but it's really not necessary.

  i.e. Graphics::ColorPicker::make_page('./');

  will generate the picker pages as required
send_page(\$html_txt,$type);
  Sends a page of html text to browser.
  Uses Apache mod_perl if available

  input:   \$html text,
           $type,       # text/html, text/plain, etc...
$time_string = http_date($time);
  Returns time string in HTTP date format, same as...

  Apache::Util::ht_time(time, "%a, %d %b %Y %T %Z",1));

  i.e. Sat, 13 Apr 2002 17:36:42 GMT
$name = script_name;
  Returns the subroutine name of the calling 
  script external to this library
$but_table_ref = buttontext([optional ref]);
  Always return and optionally set the contents of cp216_ds button text.

    input:      optional reference to button table array
    returns:    reference to button table array

  Default contents:

  my $butable = [
    'Submit'   => 'javascript:void(0);" OnMouseDown="doSubmit();return false;',
    '','',
    'Restore'  => 'javascript:void(0);" OnClick="doRestore();return false;',
    '','',
    'Close'    => 'javascript:void (0);" OnClick="parent.close();return false;',
  ];
$html_text=frames($websafe);
  Returns the frame text for top window.

  input:  true = 24 million colors
          false = web safe colors only

  return:  html text for page
$html_text = msie_frame;
  Return the text for the copyright notice
  (sample frame) for browsers that can't do
  "javascript:xxx()" from within a frame 
  like brain dead MSIE browsers.
$html_text=picker($darkimg,$liteimg,$size,$bsize,greyimg);
  Return frame text for color picker

  input:   $darkimg, # path to dark image
           $liteimg, # path to light image
           $size,    # pixel size of image
           $bsize,   # button pixel size
           $greyimg  # path to grey image

  returns: html text
$html_text=no_picker;
  Returns minimum contents for a blank 24 million
  color page when only "Web Only" colors are called
$html_text=cp216_ds($clrdot,$border,$square)
  Returns 216 color & digits page

  input:   clrdot, # path to clear dot image
           border, # border of color square
           square, # square size

  returns: html text
$javascript_text = jslib;
  Return contents of javascript library

  input: none
$html=make_buttons(\%look_n_feel,$url,$active,\@buttons,$xtra);
  Called internally

  Return the html text for a button bar

  input:  button_color, width, \@buttons

  @buttons is a list of the form = (
        # text        command 
        'BUTT1' => 'command1',
        'BUTT2' => 'command2',
        ''      => '',          # empty
  );
        If the button text is false,
        a spacer is inserted in the button bar

  returns:      html for button bar


  NOTE:         class NU must be defined
  example:
                <style>
                A.NU { 
                  color: red; // #ff0000
                  background: transparent;
                  font-family: VERDANA,ARIAL,HELVETICA,SAN-SERIF;
                  font-size:  12px !important;
                  font-weight: bold;
                  text-decoration: none;
                }
                </style>
$html_text=pluck($color, ...);
  Return x,y coordinates for browsers that
  do not recognize "javascript:xxx" from
  within frames like braindead MSIE

  input:  color,        'grey' or 'color'
          ...server_update args (if used);
$html_text=hex_update($hex_color);
  Return the command and color number
  to the 'data' frame to force an update
  of the 'sample' frame and 'digits'

  input: hex color      # i.e. 6699CC
$rv = env_dumb_browser;
  Return true if $ENV{HTTP_USER_AGENT}
  contains a dumb browser

EXPORT ^

  None by default.

AUTHOR ^

Michael Robinton, michael@bizsystems.com

COPYRIGHT and LICENSE ^

  Copyright 2002 - 2008 Michael Robinton, BizSystems.

This module is free software; you can redistribute it and/or modify it under the terms of either:

  a) the GNU General Public License as published by the Free Software
  Foundation; either version 1, or (at your option) any later version,
  
  or

  b) the "Artistic License" which comes with this module.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See either the GNU General Public License or the Artistic License for more details.

You should have received a copy of the Artistic License with this module, in the file ARTISTIC. If not, I'll be glad to provide one.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

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