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annotate mgallery.js @ 151:4e25150aa868

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Change js_path configuration setting to js_file.
author Matti Hamalainen <ccr@tnsp.org>
date Wed, 06 Sep 2017 17:34:36 +0300
parents b4751909c48f
children 606b05c31d5e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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b4751909c48f Move some Javascript code to a separate file and make the location configurable.
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1 //
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2 // Yet Another Image Gallery
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3 // -- Main Javascript utility functions file
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4 // Programmed and designed by Matti 'ccr' Hamalainen <ccr@tnsp.org>
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5 // (C) Copyright 2015-2017 Tecnic Software productions (TNSP)
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6 //
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7
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8
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9 function mgalAddEvent(evobj, evtype, evcallback)
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10 {
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11 if (evobj == null || typeof(evobj) == 'undefined')
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12 return;
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13
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14 if (evobj.addEventListener)
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15 evobj.addEventListener(evtype, evcallback, false);
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16 else
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17 if (evobj.attachEvent)
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18 evobj.attachEvent("on" + evtype, evcallback);
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19 else
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20 evobj["on"+evtype] = evcallback;
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21 };
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22
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23
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24 function mgalNavigateTo(url)
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25 {
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26 if (url != "")
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27 window.location = url;
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28 }
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29
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30
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31 function mgalProcessKeyPress(ev)
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32 {
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33 ev = ev || window.event;
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34 var key = ev.keyCode ? ev.keyCode : ev.which;
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35 switch (key)
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36 {
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37 case 37:
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38 case 65:
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39 case 52:
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40 // left
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41 mgalNavigateTo(mgalPrevURL);
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42 break;
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43
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44 case 39:
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45 case 68:
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46 case 54:
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47 // right
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48 mgalNavigateTo(mgalNextURL);
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49 break;
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50
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51 case 38:
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52 case 56:
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53 // up
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54 mgalNavigateTo(mgalUpURL);
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55 break;
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56
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57 default:
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58 return true;
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59 }
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60
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61 ev.preventDefault();
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62 return false;
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63 }
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64
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65
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66 function mgalGetWindowSize()
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67 {
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68 var winW = 0, winH = 0;
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69 if (typeof(window.innerWidth) == 'number')
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70 {
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71 // Non-MSIE
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72 winW = window.innerWidth;
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73 winH = window.innerHeight;
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74 }
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75 else
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76 if (document.documentElement && (document.documentElement.clientWidth || document.documentElement.clientHeight))
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77 {
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78 // MSIE 6+ in 'standards compliant mode'
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79 winW = document.documentElement.clientWidth;
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80 winH = document.documentElement.clientHeight;
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81 }
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82 else
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83 if (document.body && (document.body.clientWidth || document.body.clientHeight))
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84 {
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85 // MSIE 4 compatible
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86 winW = document.body.clientWidth;
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87 winH = document.body.clientHeight;
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88 }
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89
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90 return [winW, winH];
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91 }
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92
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93
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94 function mgalAdjustImageDo()
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95 {
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96 var eimg = document.getElementById("imageImage");
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97 var win = mgalGetWindowSize();
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98 var madj = 0.92;
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99 if (eimg)
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100 {
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101 if (eimg.width > eimg.height)
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102 {
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103 eimg.style.width = "100%";
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104 eimg.style.height = "auto";
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105 if (eimg.height > win[1] * madj)
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106 {
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107 eimg.style.width = "auto";
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108 eimg.style.height = (win[1] * madj)+"px";
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109 }
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110 }
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111 else
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112 {
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113 eimg.style.width = "auto";
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114 if (eimg.height > win[1] * madj)
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115 eimg.style.height = (win[1] * madj)+"px";
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116 else
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117 eimg.style.height = "100%";
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118 }
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119 }
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120 adjustPID = -1;
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121 }
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122
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123
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124 function mgalAdjustImage()
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125 {
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126 if (adjustPID == -1)
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127 adjustPID = setTimeout(mgalAdjustImageDo, 50);
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128 }
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129
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130