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1 /***********
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2 *
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3 * counter addon:
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4 *
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5 * adds slide counter (e.g. 1/7)
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6 * - use key-n to toggle slide counter (in projection mode)
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7 *
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8 * layout structure:
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9 *
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10 * .layout
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11 * > #counter (e.g. 1/7)
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12 */
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13
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14
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15 Slideshow.counterInit = function()
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16 {
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17 this.debug( 'calling counterInit()' );
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18
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19 // if no div.layout exists, create one
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20 if( $( '.layout' ).length == 0 )
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21 $( 'body' ).append( "<div class='layout'></div>");
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22
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23 $( '.layout' ).append( "<div id='counter'>" );
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24
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25 this.counterUpdate();
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26 }
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27
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28 Slideshow.counterDebugOn = function()
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29 {
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30 this.debug( 'calling counterDebugOn()' );
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31 $( '#counter' ).addClass( 'debug' );
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32 }
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33
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34 Slideshow.counterDebugOff = function()
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35 {
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36 this.debug( 'calling counterDebugOff()' );
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37 $( '#counter' ).removeClass( 'debug' );
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38 }
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39
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40 Slideshow.counterKeys = function( event, key )
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41 {
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42 this.debug( 'calling counterKeys()' );
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43
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44 switch( key.which ) {
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45 case 78: // n
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46 this.counterToggle();
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47 break;
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48 }
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49 }
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50
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51 Slideshow.counterChange = function()
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52 {
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53 this.debug( 'calling counterChange()' );
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54 this.counterUpdate();
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55 }
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56
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57 // ------------------------------------------------
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58
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59 Slideshow.counterUpdate = function()
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60 {
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61 $( '#counter' ).html( this.snum + '/' + this.smax );
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62 }
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63
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64
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65 Slideshow.counterToggle = function()
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66 {
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67 // toggle slide number/counter
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68
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69 // todo/fix: note jquery sets inline css (e.g. display: block)
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70 // but css won't get scoped for media (e.g. projection, screen, etc)
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71 // thus, css changes "spill over" to all media types
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72
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73 $( '#counter' ).toggle();
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74 }
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75
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76 // ------------------------------------------------
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77
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78 Slideshow.counterAddEvents = function()
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79 {
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80 $( document ).on( 'slideshow.init', $.proxy( Slideshow.counterInit, this ));
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81 $( document ).on( 'slideshow.debug.on', $.proxy( Slideshow.counterDebugOn, this ));
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82 $( document ).on( 'slideshow.debug.off', $.proxy( Slideshow.counterDebugOff, this ));
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83 $( document ).on( 'slideshow.keys', $.proxy( Slideshow.counterKeys, this ));
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84 $( document ).on( 'slideshow.change', $.proxy( Slideshow.counterChange, this ));
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85 }
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86
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87 Slideshow.counterAddStyles = function() {
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88 this.debug( 'add builtin counter css via inline style elements' );
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89
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90 var styleProjection =
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91 "<style media='screen,projection'> \n"+
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92 " \n"+
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93 " #counter.debug { background: #FFC; } \n"+
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94 " \n"+
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95 " #counter { position: fixed; \n"+
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96 " left: 45%; bottom: 1em; \n"+
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97 " width: 10%; \n"+
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98 " z-index: 10; \n"+
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99 " text-align: center; \n"+
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100 " font-size: 80%; \n"+
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101 " } \n"+
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102 " \n"+
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103 " #counter :link, \n"+
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104 " #counter :visited { text-decoration: none; } \n"+
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105 " \n"+
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106 "</style>";
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107
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108 var styleScreen =
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109 "<style media='screen'> \n"+
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110 " #counter { display: none !important; } \n"+
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111 "</style>";
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112
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113 $( 'head' ).append( styleProjection );
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114 $( 'head' ).append( styleScreen );
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115 }
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116
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117 Slideshow.counterAddStyles();
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118 Slideshow.counterAddEvents(); |
