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1 /***********
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2 *
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3 * control addon:
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4 *
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5 * adds toggle, prev slide, next slide links/buttons and jump list
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6 * - use key-c to toggle controls (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 * > #controls (holding navigation controls)
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12 * > #navLinks
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13 * > #toggle
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14 * > #navList
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15 * > #jumplist
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16 */
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17
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18
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19 Slideshow.ctrlInit = function()
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20 {
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21 this.debug( 'calling ctrlInit()' );
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22
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23 var self = this; // NOTE: jquery binds this in .each,.click, etc to element
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24
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25 // todo: make layout into an id (not class?)
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26 // do we need or allow more than one element?
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27
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28 // if no div.layout exists, create one
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29 if( $( '.layout' ).length == 0 )
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30 $( 'body' ).append( "<div class='layout'></div>");
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31
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32 $( '.layout' ).append( "<div id='controls'>" );
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33
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34 var $controls = $( '#controls' )
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35
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36 $controls.html( '<div id="navLinks">'
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37 + '<a accesskey="t" id="toggle" href="#">Ø<\/a>'
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38 + '<a accesskey="z" id="prev" href="#">«<\/a>'
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39 + '<a accesskey="x" id="next" href="#">»<\/a>'
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40 + '<div id="navList"><select id="jumplist" /><\/div>'
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41 + '<\/div>' );
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42
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43 $controls.hover( function() { self.ctrlShow(); }, function() { self.ctrlHide(); });
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44 $('#toggle').click( function() { self.toggle(); } );
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45 $('#prev').click( function() { self.go(-1); } );
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46 $('#next').click( function() { self.go(1); } );
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47
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48 $('#jumplist').change( function() { self.goTo( parseInt( $( '#jumplist' ).val() )); } );
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49
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50 this.ctrlPopulateJumpList();
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51 }
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52
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53
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54 Slideshow.ctrlDebugOn = function()
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55 {
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56 this.debug( 'calling ctrlDebugOn()' );
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57 $( '#controls' ).addClass( 'debug' );
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58 }
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59
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60 Slideshow.ctrlDebugOff = function()
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61 {
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62 this.debug( 'calling ctrlDebugOff()' );
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63 $( '#controls' ).removeClass( 'debug' );
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64 }
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65
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66 Slideshow.ctrlKeys = function( event, key )
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67 {
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68 this.debug( 'calling ctrlKeys()' );
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69
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70 switch( key.which ) {
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71 case 67: // c
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72 this.ctrlToggle();
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73 break;
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74 }
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75 }
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76
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77 Slideshow.ctrlChange = function()
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78 {
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79 this.debug( 'calling ctrlChange()' );
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80 this.ctrlUpdateJumpList();
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81 }
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82
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83 // -----------------------------------------------------
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84
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85 Slideshow.ctrlPopulateJumpList = function()
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86 {
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87 var self = this; // NOTE: jquery binds this in .each to element
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88
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89 var list = $('#jumplist').get(0);
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90
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91 this.$slides.each( function(i) {
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92 var text = "-"; // untitled slide
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93
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94 // todo: use titleSelector if user set??
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95 // $(this).find( self.settings.titleSelector ).text();
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96
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97 var $h1 = $( 'h1', this );
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98 if( $h1.length > 0 )
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99 {
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100 text = $h1.first().text();
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101 }
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102 else // try h2
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103 {
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104 var $h2 = $( 'h2', this );
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105 if( $h2.length > 0 )
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106 {
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107 text = $h2.first().text();
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108 }
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109 else // try h3
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110 {
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111 var $h3 = $( 'h3', this );
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112 if( $h3.length > 0 )
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113 {
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114 text = $h3.first().text();
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115 }
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116 }
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117 }
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118
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119 list.options[list.length] = new Option( (i+1)+' : '+ text, (i+1) );
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120 });
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121 }
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122
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123 Slideshow.ctrlUpdateJumpList = function()
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124 {
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125 $('#jumplist').get(0).selectedIndex = (this.snum-1);
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126 }
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127
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128 Slideshow.ctrlShow = function()
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129 {
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130 $( '#navLinks' ).css( 'visibility', 'visible' );
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131 }
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132
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133 Slideshow.ctrlHide = function()
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134 {
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135 $( '#navLinks' ).css( 'visibility', 'hidden' );
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136 }
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137
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138 Slideshow.ctrlToggle = function()
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139 {
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140 // toggle control panel
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141 var $navLinks = $( '#navLinks' );
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142
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143 if( $navLinks.css( 'visibility' ) != 'visible' )
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144 $navLinks.css( 'visibility', 'visible' );
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145 else
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146 $navLinks.css( 'visibility', 'hidden' );
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147 }
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148
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149
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150 // ------------------------------------------------
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151
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152 Slideshow.ctrlAddEvents = function()
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153 {
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154 $( document ).on( 'slideshow.init', $.proxy( Slideshow.ctrlInit, this ));
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155 $( document ).on( 'slideshow.debug.on', $.proxy( Slideshow.ctrlDebugOn, this ));
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156 $( document ).on( 'slideshow.debug.off', $.proxy( Slideshow.ctrlDebugOff, this ));
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157 $( document ).on( 'slideshow.keys', $.proxy( Slideshow.ctrlKeys, this ));
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158 $( document ).on( 'slideshow.change', $.proxy( Slideshow.ctrlChange, this ));
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159 }
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160
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161 Slideshow.ctrlAddStyles = function() {
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162 this.debug( 'add builtin controls css via inline style elements' );
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163
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164 var styleProjection =
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165 "<style media='screen,projection'> \n"+
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166 " \n"+
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167 " #controls.debug { background: #BBD; } \n"+
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168 " \n"+
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169 " #controls { position: fixed; \n"+
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170 " left: 60%; bottom: 0; \n"+
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171 " width: 40%; \n"+
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172 " z-index: 100; \n"+
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173 " text-align: right; \n"+
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174 " font-weight: bold; \n"+
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175 " font-size: 120%; \n"+
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176 " } \n"+
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177 " \n"+
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178 " #controls :focus { outline: 1px dotted white;} \n"+
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179 " \n"+
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180 " #controls #navLinks { text-align: right; margin: 0; visibility: hidden; } \n"+
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181
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182 " \n"+
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183 " #controls #navLinks a { padding: 0; margin: 0 0.5em; cursor: pointer; border: none; } \n"+
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184 " \n"+
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185 " #controls #navLinks :link, \n"+
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186 " #controls #navLinks :visited {text-decoration: none; } \n"+
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187 " \n"+
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188 " #controls #navList #jumplist { background: white; color: black; } \n"+
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189 "</style>";
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190
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191 var styleScreen =
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192 "<style media='screen'> \n"+
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193 "/********* \n"+
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194 " * make toggle button visible and reposition to upper right corner \n"+
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195 " * note: toogle button is nested inside #controls > #navLinks > #toogle \n"+
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196 " */ \n"+
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197 " \n"+
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198 " #controls, \n"+
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199 " #navLinks, \n"+
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200 " #toggle { display: block; \n"+
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201 " visibility: visible; \n"+
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202 " margin: 0; padding: 0; \n"+
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203 " } \n"+
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204 " \n"+
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205 " #toggle { position: fixed; \n"+
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206 " top: 0; right: 0; \n"+
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207 " padding: 0.5em; \n"+
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208 " border-left: 1px solid; \n"+
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209 " border-bottom: 1px solid; \n"+
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210 " background: white; \n"+
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211 " } \n"+
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212 "</style>";
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213
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214 $( 'head' ).append( styleProjection );
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215 $( 'head' ).append( styleScreen );
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216 }
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217
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218 Slideshow.ctrlAddStyles();
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219 Slideshow.ctrlAddEvents(); |
