1 (function(e){var b=Math.abs,a=Math.max,d=Math.min,c=Math.round;function f(){return e("<div/>")}e.imgAreaSelect=function(s,X){var az=e(s),Z,av=f(),ai=f(),K=f().add(f()).add(f()).add(f()),ab=f().add(f()).add(f()).add(f()),O=e([]),V,n,q,aC={left:0,top:0},Q,j,C,P={left:0,top:0},D=0,ag="absolute",T,S,ad,ac,L,E,U,W,am,Y,N,A,aD,z,aB,y={x1:0,y1:0,x2:0,y2:0,width:0,height:0},p=document.documentElement,l,au,ap,aj,af,aq,x;function J(h){return h+aC.left-P.left}function I(h){return h+aC.top-P.top}function H(h){return h-aC.left+P.left}function B(h){return h-aC.top+P.top}function ao(h){return h.pageX-P.left}function al(h){return h.pageY-P.top}function G(h){var o=h||ad,i=h||ac;return{x1:c(y.x1*o),y1:c(y.y1*i),x2:c(y.x2*o),y2:c(y.y2*i),width:c(y.x2*o)-c(y.x1*o),height:c(y.y2*i)-c(y.y1*i)}}function ah(i,w,h,o,aE){var aG=aE||ad,aF=aE||ac;y={x1:c(i/aG||0),y1:c(w/aF||0),x2:c(h/aG||0),y2:c(o/aF||0)};y.width=y.x2-y.x1;y.height=y.y2-y.y1}function ar(){if(!az.width()){return}aC={left:c(az.offset().left),top:c(az.offset().top)};Q=az.innerWidth();j=az.innerHeight();aC.top+=(az.outerHeight()-j)>>1;aC.left+=(az.outerWidth()-Q)>>1;E=c(X.minWidth/ad)||0;U=c(X.minHeight/ac)||0;W=c(d(X.maxWidth/ad||1<<24,Q));am=c(d(X.maxHeight/ac||1<<24,j));if(e().jquery=="1.3.2"&&ag=="fixed"&&!p.getBoundingClientRect){aC.top+=a(document.body.scrollTop,p.scrollTop);aC.left+=a(document.body.scrollLeft,p.scrollLeft)}P=/absolute|relative/.test(C.css("position"))?{left:c(C.offset().left)-C.scrollLeft(),top:c(C.offset().top)-C.scrollTop()}:ag=="fixed"?{left:e(document).scrollLeft(),top:e(document).scrollTop()}:{left:0,top:0};n=J(0);q=I(0);if(y.x2>Q||y.y2>j){ay()}}function aa(h){if(!N){return}av.css({left:J(y.x1),top:I(y.y1)}).add(ai).width(af=y.width).height(aq=y.height);ai.add(K).add(O).css({left:0,top:0});K.width(a(af-K.outerWidth()+K.innerWidth(),0)).height(a(aq-K.outerHeight()+K.innerHeight(),0));e(ab[0]).css({left:n,top:q,width:y.x1,height:j});e(ab[1]).css({left:n+y.x1,top:q,width:af,height:y.y1});e(ab[2]).css({left:n+y.x2,top:q,width:Q-y.x2,height:j});e(ab[3]).css({left:n+y.x1,top:q+y.y2,width:af,height:j-y.y2});af-=O.outerWidth();aq-=O.outerHeight();switch(O.length){case 8:e(O[4]).css({left:af>>1});e(O[5]).css({left:af,top:aq>>1});e(O[6]).css({left:af>>1,top:aq});e(O[7]).css({top:aq>>1});case 4:O.slice(1,3).css({left:af});O.slice(2,4).css({top:aq})}if(h!==false){if(e.imgAreaSelect.keyPress!=aw){e(document).unbind(e.imgAreaSelect.keyPress,e.imgAreaSelect.onKeyPress)}if(X.keys){e(document)[e.imgAreaSelect.keyPress](e.imgAreaSelect.onKeyPress=aw)}}if(e.browser.msie&&K.outerWidth()-K.innerWidth()==2){K.css("margin",0);setTimeout(function(){K.css("margin","auto")},0)}}function u(h){ar();aa(h);A=J(y.x1);aD=I(y.y1);z=J(y.x2);aB=I(y.y2)}function ak(h,i){X.fadeSpeed?h.fadeOut(X.fadeSpeed,i):h.hide()}function F(i){var h=H(ao(i))-y.x1,o=B(al(i))-y.y1;if(!x){ar();x=true;av.one("mouseout",function(){x=false})}L="";if(X.resizable){if(o<=X.resizeMargin){L="n"}else{if(o>=y.height-X.resizeMargin){L="s"}}if(h<=X.resizeMargin){L+="w"}else{if(h>=y.width-X.resizeMargin){L+="e"}}}av.css("cursor",L?L+"-resize":X.movable?"move":"");if(V){V.toggle()}}function an(h){e("body").css("cursor","");if(X.autoHide||y.width*y.height==0){ak(av.add(ab),function(){e(this).hide()})}e(document).unbind("mousemove",ae);av.mousemove(F);X.onSelectEnd(s,G())}function t(h){if(h.which!=1){return false}ar();if(L){e("body").css("cursor",L+"-resize");A=J(y[/w/.test(L)?"x2":"x1"]);aD=I(y[/n/.test(L)?"y2":"y1"]);e(document).mousemove(ae).one("mouseup",an);av.unbind("mousemove",F)}else{if(X.movable){T=n+y.x1-ao(h);S=q+y.y1-al(h);av.unbind("mousemove",F);e(document).mousemove(g).one("mouseup",function(){X.onSelectEnd(s,G());e(document).unbind("mousemove",g);av.mousemove(F)})}else{az.mousedown(h)}}return false}function r(h){if(Y){if(h){z=a(n,d(n+Q,A+b(aB-aD)*Y*(z>A||-1)));aB=c(a(q,d(q+j,aD+b(z-A)/Y*(aB>aD||-1))));z=c(z)}else{aB=a(q,d(q+j,aD+b(z-A)/Y*(aB>aD||-1)));z=c(a(n,d(n+Q,A+b(aB-aD)*Y*(z>A||-1))));aB=c(aB)}}}function ay(){A=d(A,n+Q);aD=d(aD,q+j);if(b(z-A)<E){z=A-E*(z<A||-1);if(z<n){A=n+E}else{if(z>n+Q){A=n+Q-E}}}if(b(aB-aD)<U){aB=aD-U*(aB<aD||-1);if(aB<q){aD=q+U}else{if(aB>q+j){aD=q+j-U}}}z=a(n,d(z,n+Q));aB=a(q,d(aB,q+j));r(b(z-A)<b(aB-aD)*Y);if(b(z-A)>W){z=A-W*(z<A||-1);r()}if(b(aB-aD)>am){aB=aD-am*(aB<aD||-1);r(true)}y={x1:H(d(A,z)),x2:H(a(A,z)),y1:B(d(aD,aB)),y2:B(a(aD,aB)),width:b(z-A),height:b(aB-aD)};aa();X.onSelectChange(s,G())}function ae(h){z=/w|e|^$/.test(L)||Y?ao(h):J(y.x2);aB=/n|s|^$/.test(L)||Y?al(h):I(y.y2);ay();return false}function R(h,i){z=(A=h)+y.width;aB=(aD=i)+y.height;e.extend(y,{x1:H(A),y1:B(aD),x2:H(z),y2:B(aB)});aa();X.onSelectChange(s,G())}function g(h){A=a(n,d(T+ao(h),n+Q-y.width));aD=a(q,d(S+al(h),q+j-y.height));R(A,aD);h.preventDefault();return false}function aA(){e(document).unbind("mousemove",aA);ar();z=A;aB=aD;ay();L="";if(!ab.is(":visible")){av.add(ab).hide().fadeIn(X.fadeSpeed||0)}N=true;e(document).unbind("mouseup",at).mousemove(ae).one("mouseup",an);av.unbind("mousemove",F);X.onSelectStart(s,G())}function at(){e(document).unbind("mousemove",aA).unbind("mouseup",at);ak(av.add(ab));ah(H(A),B(aD),H(A),B(aD));if(!(this instanceof e.imgAreaSelect)){X.onSelectChange(s,G());X.onSelectEnd(s,G())}}function m(h){if(h.which!=1||ab.is(":animated")){return false}ar();T=A=ao(h);S=aD=al(h);e(document).mousemove(aA).mouseup(at);return false}function v(){u(false)}function ax(){Z=true;M(X=e.extend({classPrefix:"imgareaselect",movable:true,parent:"body",resizable:true,resizeMargin:10,onInit:function(){},onSelectStart:function(){},onSelectChange:function(){},onSelectEnd:function(){}},X));av.add(ab).css({visibility:""});if(X.show){N=true;ar();aa();av.add(ab).hide().fadeIn(X.fadeSpeed||0)}setTimeout(function(){X.onInit(s,G())},0)}var aw=function(w){var h=X.keys,aE,o,i=w.keyCode;aE=!isNaN(h.alt)&&(w.altKey||w.originalEvent.altKey)?h.alt:!isNaN(h.ctrl)&&w.ctrlKey?h.ctrl:!isNaN(h.shift)&&w.shiftKey?h.shift:!isNaN(h.arrows)?h.arrows:10;if(h.arrows=="resize"||(h.shift=="resize"&&w.shiftKey)||(h.ctrl=="resize"&&w.ctrlKey)||(h.alt=="resize"&&(w.altKey||w.originalEvent.altKey))){switch(i){case 37:aE=-aE;case 39:o=a(A,z);A=d(A,z);z=a(o+aE,A);r();break;case 38:aE=-aE;case 40:o=a(aD,aB);aD=d(aD,aB);aB=a(o+aE,aD);r(true);break;default:return}ay()}else{A=d(A,z);aD=d(aD,aB);switch(i){case 37:R(a(A-aE,n),aD);break;case 38:R(A,a(aD-aE,q));break;case 39:R(A+d(aE,Q-H(z)),aD);break;case 40:R(A,aD+d(aE,j-B(aB)));break;default:return}}return false};function k(h,o){for(var i in o){if(X[i]!==undefined){h.css(o[i],X[i])}}}function M(h){if(h.parent){(C=e(h.parent)).append(av.add(ab))}e.extend(X,h);ar();if(h.handles!=null){O.remove();O=e([]);ap=h.handles?h.handles=="corners"?4:8:0;while(ap--){O=O.add(f())}O.addClass(X.classPrefix+"-handle").css({position:"absolute",fontSize:0,zIndex:D+1||1});if(!parseInt(O.css("width"))>=0){O.width(5).height(5)}if(aj=X.borderWidth){O.css({borderWidth:aj,borderStyle:"solid"})}k(O,{borderColor1:"border-color",borderColor2:"background-color",borderOpacity:"opacity"})}ad=X.imageWidth/Q||1;ac=X.imageHeight/j||1;if(h.x1!=null){ah(h.x1,h.y1,h.x2,h.y2);h.show=!h.hide}if(h.keys){X.keys=e.extend({shift:1,ctrl:"resize"},h.keys)}ab.addClass(X.classPrefix+"-outer");ai.addClass(X.classPrefix+"-selection");for(ap=0;ap++<4;){e(K[ap-1]).addClass(X.classPrefix+"-border"+ap)}k(ai,{selectionColor:"background-color",selectionOpacity:"opacity"});k(K,{borderOpacity:"opacity",borderWidth:"border-width"});k(ab,{outerColor:"background-color",outerOpacity:"opacity"});if(aj=X.borderColor1){e(K[0]).css({borderStyle:"solid",borderColor:aj})}if(aj=X.borderColor2){e(K[1]).css({borderStyle:"dashed",borderColor:aj})}av.append(ai.add(K).add(V).add(O));if(e.browser.msie){if(aj=ab.css("filter").match(/opacity=(\d+)/)){ab.css("opacity",aj[1]/100)}if(aj=K.css("filter").match(/opacity=(\d+)/)){K.css("opacity",aj[1]/100)}}if(h.hide){ak(av.add(ab))}else{if(h.show&&Z){N=true;av.add(ab).fadeIn(X.fadeSpeed||0);u()}}Y=(au=(X.aspectRatio||"").split(/:/))[0]/au[1];az.add(ab).unbind("mousedown",m);if(X.disable||X.enable===false){av.unbind("mousemove",F).unbind("mousedown",t);e(window).unbind("resize",v)}else{if(X.enable||X.disable===false){if(X.resizable||X.movable){av.mousemove(F).mousedown(t)}e(window).resize(v)}if(!X.persistent){az.add(ab).mousedown(m)}}X.enable=X.disable=undefined}this.remove=function(){M({disable:true});av.add(ab).remove()};this.getOptions=function(){return X};this.setOptions=M;this.getSelection=G;this.setSelection=ah;this.cancelSelection=at;this.update=u;l=az;while(l.length){D=a(D,!isNaN(l.css("z-index"))?l.css("z-index"):D);if(l.css("position")=="fixed"){ag="fixed"}l=l.parent(":not(body)")}D=X.zIndex||D;if(e.browser.msie){az.attr("unselectable","on")}e.imgAreaSelect.keyPress=e.browser.msie||e.browser.safari?"keydown":"keypress";if(e.browser.opera){V=f().css({width:"100%",height:"100%",position:"absolute",zIndex:D+2||2})}av.add(ab).css({visibility:"hidden",position:ag,overflow:"hidden",zIndex:D||"0"});av.css({zIndex:D+2||2});ai.add(K).css({position:"absolute",fontSize:0});s.complete||s.readyState=="complete"||!az.is("img")?ax():az.one("load",ax);if(!Z&&e.browser.msie&&e.browser.version>=7){s.src=s.src}};e.fn.imgAreaSelect=function(g){g=g||{};this.each(function(){if(e(this).data("imgAreaSelect")){if(g.remove){e(this).data("imgAreaSelect").remove();e(this).removeData("imgAreaSelect")}else{e(this).data("imgAreaSelect").setOptions(g)}}else{if(!g.remove){if(g.enable===undefined&&g.disable===undefined){g.enable=true}e(this).data("imgAreaSelect",new e.imgAreaSelect(this,g))}}});if(g.instance){return e(this).data("imgAreaSelect")}return this}})(jQuery); |
1 /* |
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2 * imgAreaSelect jQuery plugin |
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3 * version 0.9.9 |
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4 * |
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5 * Copyright (c) 2008-2011 Michal Wojciechowski (odyniec.net) |
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6 * |
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7 * Dual licensed under the MIT (MIT-LICENSE.txt) |
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8 * and GPL (GPL-LICENSE.txt) licenses. |
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9 * |
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10 * http://odyniec.net/projects/imgareaselect/ |
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11 * |
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12 */ |
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13 |
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14 (function($) { |
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15 |
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16 /* |
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17 * Math functions will be used extensively, so it's convenient to make a few |
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18 * shortcuts |
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19 */ |
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20 var abs = Math.abs, |
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21 max = Math.max, |
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22 min = Math.min, |
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23 round = Math.round; |
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24 |
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25 /** |
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26 * Create a new HTML div element |
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27 * |
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28 * @return A jQuery object representing the new element |
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29 */ |
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30 function div() { |
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31 return $('<div/>'); |
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32 } |
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33 |
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34 /** |
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35 * imgAreaSelect initialization |
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36 * |
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37 * @param img |
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38 * A HTML image element to attach the plugin to |
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39 * @param options |
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40 * An options object |
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41 */ |
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42 $.imgAreaSelect = function (img, options) { |
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43 var |
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44 /* jQuery object representing the image */ |
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45 $img = $(img), |
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46 |
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47 /* Has the image finished loading? */ |
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48 imgLoaded, |
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49 |
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50 /* Plugin elements */ |
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51 |
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52 /* Container box */ |
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53 $box = div(), |
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54 /* Selection area */ |
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55 $area = div(), |
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56 /* Border (four divs) */ |
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57 $border = div().add(div()).add(div()).add(div()), |
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58 /* Outer area (four divs) */ |
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59 $outer = div().add(div()).add(div()).add(div()), |
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60 /* Handles (empty by default, initialized in setOptions()) */ |
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61 $handles = $([]), |
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62 |
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63 /* |
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64 * Additional element to work around a cursor problem in Opera |
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65 * (explained later) |
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66 */ |
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67 $areaOpera, |
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68 |
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69 /* Image position (relative to viewport) */ |
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70 left, top, |
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71 |
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72 /* Image offset (as returned by .offset()) */ |
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73 imgOfs = { left: 0, top: 0 }, |
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74 |
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75 /* Image dimensions (as returned by .width() and .height()) */ |
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76 imgWidth, imgHeight, |
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77 |
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78 /* |
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79 * jQuery object representing the parent element that the plugin |
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80 * elements are appended to |
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81 */ |
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82 $parent, |
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83 |
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84 /* Parent element offset (as returned by .offset()) */ |
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85 parOfs = { left: 0, top: 0 }, |
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86 |
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87 /* Base z-index for plugin elements */ |
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88 zIndex = 0, |
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89 |
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90 /* Plugin elements position */ |
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91 position = 'absolute', |
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92 |
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93 /* X/Y coordinates of the starting point for move/resize operations */ |
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94 startX, startY, |
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95 |
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96 /* Horizontal and vertical scaling factors */ |
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97 scaleX, scaleY, |
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98 |
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99 /* Current resize mode ("nw", "se", etc.) */ |
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100 resize, |
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101 |
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102 /* Selection area constraints */ |
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103 minWidth, minHeight, maxWidth, maxHeight, |
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104 |
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105 /* Aspect ratio to maintain (floating point number) */ |
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106 aspectRatio, |
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107 |
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108 /* Are the plugin elements currently displayed? */ |
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109 shown, |
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110 |
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111 /* Current selection (relative to parent element) */ |
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112 x1, y1, x2, y2, |
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113 |
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114 /* Current selection (relative to scaled image) */ |
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115 selection = { x1: 0, y1: 0, x2: 0, y2: 0, width: 0, height: 0 }, |
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116 |
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117 /* Document element */ |
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118 docElem = document.documentElement, |
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119 |
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120 /* Various helper variables used throughout the code */ |
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121 $p, d, i, o, w, h, adjusted; |
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122 |
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123 /* |
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124 * Translate selection coordinates (relative to scaled image) to viewport |
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125 * coordinates (relative to parent element) |
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126 */ |
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127 |
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128 /** |
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129 * Translate selection X to viewport X |
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130 * |
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131 * @param x |
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132 * Selection X |
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133 * @return Viewport X |
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134 */ |
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135 function viewX(x) { |
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136 return x + imgOfs.left - parOfs.left; |
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137 } |
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138 |
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139 /** |
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140 * Translate selection Y to viewport Y |
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141 * |
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142 * @param y |
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143 * Selection Y |
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144 * @return Viewport Y |
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145 */ |
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146 function viewY(y) { |
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147 return y + imgOfs.top - parOfs.top; |
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148 } |
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149 |
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150 /* |
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151 * Translate viewport coordinates to selection coordinates |
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152 */ |
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153 |
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154 /** |
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155 * Translate viewport X to selection X |
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156 * |
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157 * @param x |
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158 * Viewport X |
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159 * @return Selection X |
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160 */ |
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161 function selX(x) { |
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162 return x - imgOfs.left + parOfs.left; |
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163 } |
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164 |
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165 /** |
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166 * Translate viewport Y to selection Y |
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167 * |
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168 * @param y |
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169 * Viewport Y |
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170 * @return Selection Y |
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171 */ |
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172 function selY(y) { |
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173 return y - imgOfs.top + parOfs.top; |
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174 } |
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175 |
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176 /* |
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177 * Translate event coordinates (relative to document) to viewport |
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178 * coordinates |
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179 */ |
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180 |
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181 /** |
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182 * Get event X and translate it to viewport X |
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183 * |
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184 * @param event |
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185 * The event object |
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186 * @return Viewport X |
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187 */ |
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188 function evX(event) { |
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189 return event.pageX - parOfs.left; |
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190 } |
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191 |
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192 /** |
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193 * Get event Y and translate it to viewport Y |
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194 * |
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195 * @param event |
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196 * The event object |
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197 * @return Viewport Y |
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198 */ |
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199 function evY(event) { |
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200 return event.pageY - parOfs.top; |
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201 } |
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202 |
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203 /** |
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204 * Get the current selection |
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205 * |
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206 * @param noScale |
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207 * If set to <code>true</code>, scaling is not applied to the |
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208 * returned selection |
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209 * @return Selection object |
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210 */ |
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211 function getSelection(noScale) { |
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212 var sx = noScale || scaleX, sy = noScale || scaleY; |
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213 |
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214 return { x1: round(selection.x1 * sx), |
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215 y1: round(selection.y1 * sy), |
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216 x2: round(selection.x2 * sx), |
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217 y2: round(selection.y2 * sy), |
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218 width: round(selection.x2 * sx) - round(selection.x1 * sx), |
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219 height: round(selection.y2 * sy) - round(selection.y1 * sy) }; |
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220 } |
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221 |
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222 /** |
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223 * Set the current selection |
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224 * |
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225 * @param x1 |
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226 * X coordinate of the upper left corner of the selection area |
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227 * @param y1 |
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228 * Y coordinate of the upper left corner of the selection area |
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229 * @param x2 |
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230 * X coordinate of the lower right corner of the selection area |
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231 * @param y2 |
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232 * Y coordinate of the lower right corner of the selection area |
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233 * @param noScale |
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234 * If set to <code>true</code>, scaling is not applied to the |
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235 * new selection |
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236 */ |
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237 function setSelection(x1, y1, x2, y2, noScale) { |
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238 var sx = noScale || scaleX, sy = noScale || scaleY; |
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239 |
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240 selection = { |
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241 x1: round(x1 / sx || 0), |
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242 y1: round(y1 / sy || 0), |
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243 x2: round(x2 / sx || 0), |
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244 y2: round(y2 / sy || 0) |
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245 }; |
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246 |
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247 selection.width = selection.x2 - selection.x1; |
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248 selection.height = selection.y2 - selection.y1; |
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249 } |
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250 |
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251 /** |
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252 * Recalculate image and parent offsets |
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253 */ |
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254 function adjust() { |
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255 /* |
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256 * Do not adjust if image width is not a positive number. This might |
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257 * happen when imgAreaSelect is put on a parent element which is then |
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258 * hidden. |
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259 */ |
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260 if (!$img.width()) |
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261 return; |
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262 |
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263 /* |
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264 * Get image offset. The .offset() method returns float values, so they |
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265 * need to be rounded. |
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266 */ |
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267 imgOfs = { left: round($img.offset().left), top: round($img.offset().top) }; |
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268 |
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269 /* Get image dimensions */ |
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270 imgWidth = $img.innerWidth(); |
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271 imgHeight = $img.innerHeight(); |
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272 |
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273 imgOfs.top += ($img.outerHeight() - imgHeight) >> 1; |
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274 imgOfs.left += ($img.outerWidth() - imgWidth) >> 1; |
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275 |
|
276 /* Set minimum and maximum selection area dimensions */ |
|
277 minWidth = round(options.minWidth / scaleX) || 0; |
|
278 minHeight = round(options.minHeight / scaleY) || 0; |
|
279 maxWidth = round(min(options.maxWidth / scaleX || 1<<24, imgWidth)); |
|
280 maxHeight = round(min(options.maxHeight / scaleY || 1<<24, imgHeight)); |
|
281 |
|
282 /* |
|
283 * Workaround for jQuery 1.3.2 incorrect offset calculation, originally |
|
284 * observed in Safari 3. Firefox 2 is also affected. |
|
285 */ |
|
286 if ($().jquery == '1.3.2' && position == 'fixed' && |
|
287 !docElem['getBoundingClientRect']) |
|
288 { |
|
289 imgOfs.top += max(document.body.scrollTop, docElem.scrollTop); |
|
290 imgOfs.left += max(document.body.scrollLeft, docElem.scrollLeft); |
|
291 } |
|
292 |
|
293 /* Determine parent element offset */ |
|
294 parOfs = /absolute|relative/.test($parent.css('position')) ? |
|
295 { left: round($parent.offset().left) - $parent.scrollLeft(), |
|
296 top: round($parent.offset().top) - $parent.scrollTop() } : |
|
297 position == 'fixed' ? |
|
298 { left: $(document).scrollLeft(), top: $(document).scrollTop() } : |
|
299 { left: 0, top: 0 }; |
|
300 |
|
301 left = viewX(0); |
|
302 top = viewY(0); |
|
303 |
|
304 /* |
|
305 * Check if selection area is within image boundaries, adjust if |
|
306 * necessary |
|
307 */ |
|
308 if (selection.x2 > imgWidth || selection.y2 > imgHeight) |
|
309 doResize(); |
|
310 } |
|
311 |
|
312 /** |
|
313 * Update plugin elements |
|
314 * |
|
315 * @param resetKeyPress |
|
316 * If set to <code>false</code>, this instance's keypress |
|
317 * event handler is not activated |
|
318 */ |
|
319 function update(resetKeyPress) { |
|
320 /* If plugin elements are hidden, do nothing */ |
|
321 if (!shown) return; |
|
322 |
|
323 /* |
|
324 * Set the position and size of the container box and the selection area |
|
325 * inside it |
|
326 */ |
|
327 $box.css({ left: viewX(selection.x1), top: viewY(selection.y1) }) |
|
328 .add($area).width(w = selection.width).height(h = selection.height); |
|
329 |
|
330 /* |
|
331 * Reset the position of selection area, borders, and handles (IE6/IE7 |
|
332 * position them incorrectly if we don't do this) |
|
333 */ |
|
334 $area.add($border).add($handles).css({ left: 0, top: 0 }); |
|
335 |
|
336 /* Set border dimensions */ |
|
337 $border |
|
338 .width(max(w - $border.outerWidth() + $border.innerWidth(), 0)) |
|
339 .height(max(h - $border.outerHeight() + $border.innerHeight(), 0)); |
|
340 |
|
341 /* Arrange the outer area elements */ |
|
342 $($outer[0]).css({ left: left, top: top, |
|
343 width: selection.x1, height: imgHeight }); |
|
344 $($outer[1]).css({ left: left + selection.x1, top: top, |
|
345 width: w, height: selection.y1 }); |
|
346 $($outer[2]).css({ left: left + selection.x2, top: top, |
|
347 width: imgWidth - selection.x2, height: imgHeight }); |
|
348 $($outer[3]).css({ left: left + selection.x1, top: top + selection.y2, |
|
349 width: w, height: imgHeight - selection.y2 }); |
|
350 |
|
351 w -= $handles.outerWidth(); |
|
352 h -= $handles.outerHeight(); |
|
353 |
|
354 /* Arrange handles */ |
|
355 switch ($handles.length) { |
|
356 case 8: |
|
357 $($handles[4]).css({ left: w >> 1 }); |
|
358 $($handles[5]).css({ left: w, top: h >> 1 }); |
|
359 $($handles[6]).css({ left: w >> 1, top: h }); |
|
360 $($handles[7]).css({ top: h >> 1 }); |
|
361 case 4: |
|
362 $handles.slice(1,3).css({ left: w }); |
|
363 $handles.slice(2,4).css({ top: h }); |
|
364 } |
|
365 |
|
366 if (resetKeyPress !== false) { |
|
367 /* |
|
368 * Need to reset the document keypress event handler -- unbind the |
|
369 * current handler |
|
370 */ |
|
371 if ($.imgAreaSelect.keyPress != docKeyPress) |
|
372 $(document).unbind($.imgAreaSelect.keyPress, |
|
373 $.imgAreaSelect.onKeyPress); |
|
374 |
|
375 if (options.keys) |
|
376 /* |
|
377 * Set the document keypress event handler to this instance's |
|
378 * docKeyPress() function |
|
379 */ |
|
380 $(document)[$.imgAreaSelect.keyPress]( |
|
381 $.imgAreaSelect.onKeyPress = docKeyPress); |
|
382 } |
|
383 |
|
384 /* |
|
385 * Internet Explorer displays 1px-wide dashed borders incorrectly by |
|
386 * filling the spaces between dashes with white. Toggling the margin |
|
387 * property between 0 and "auto" fixes this in IE6 and IE7 (IE8 is still |
|
388 * broken). This workaround is not perfect, as it requires setTimeout() |
|
389 * and thus causes the border to flicker a bit, but I haven't found a |
|
390 * better solution. |
|
391 * |
|
392 * Note: This only happens with CSS borders, set with the borderWidth, |
|
393 * borderOpacity, borderColor1, and borderColor2 options (which are now |
|
394 * deprecated). Borders created with GIF background images are fine. |
|
395 */ |
|
396 if ($.browser.msie && $border.outerWidth() - $border.innerWidth() == 2) { |
|
397 $border.css('margin', 0); |
|
398 setTimeout(function () { $border.css('margin', 'auto'); }, 0); |
|
399 } |
|
400 } |
|
401 |
|
402 /** |
|
403 * Do the complete update sequence: recalculate offsets, update the |
|
404 * elements, and set the correct values of x1, y1, x2, and y2. |
|
405 * |
|
406 * @param resetKeyPress |
|
407 * If set to <code>false</code>, this instance's keypress |
|
408 * event handler is not activated |
|
409 */ |
|
410 function doUpdate(resetKeyPress) { |
|
411 adjust(); |
|
412 update(resetKeyPress); |
|
413 x1 = viewX(selection.x1); y1 = viewY(selection.y1); |
|
414 x2 = viewX(selection.x2); y2 = viewY(selection.y2); |
|
415 } |
|
416 |
|
417 /** |
|
418 * Hide or fade out an element (or multiple elements) |
|
419 * |
|
420 * @param $elem |
|
421 * A jQuery object containing the element(s) to hide/fade out |
|
422 * @param fn |
|
423 * Callback function to be called when fadeOut() completes |
|
424 */ |
|
425 function hide($elem, fn) { |
|
426 options.fadeSpeed ? $elem.fadeOut(options.fadeSpeed, fn) : $elem.hide(); |
|
427 } |
|
428 |
|
429 /** |
|
430 * Selection area mousemove event handler |
|
431 * |
|
432 * @param event |
|
433 * The event object |
|
434 */ |
|
435 function areaMouseMove(event) { |
|
436 var x = selX(evX(event)) - selection.x1, |
|
437 y = selY(evY(event)) - selection.y1; |
|
438 |
|
439 if (!adjusted) { |
|
440 adjust(); |
|
441 adjusted = true; |
|
442 |
|
443 $box.one('mouseout', function () { adjusted = false; }); |
|
444 } |
|
445 |
|
446 /* Clear the resize mode */ |
|
447 resize = ''; |
|
448 |
|
449 if (options.resizable) { |
|
450 /* |
|
451 * Check if the mouse pointer is over the resize margin area and set |
|
452 * the resize mode accordingly |
|
453 */ |
|
454 if (y <= options.resizeMargin) |
|
455 resize = 'n'; |
|
456 else if (y >= selection.height - options.resizeMargin) |
|
457 resize = 's'; |
|
458 if (x <= options.resizeMargin) |
|
459 resize += 'w'; |
|
460 else if (x >= selection.width - options.resizeMargin) |
|
461 resize += 'e'; |
|
462 } |
|
463 |
|
464 $box.css('cursor', resize ? resize + '-resize' : |
|
465 options.movable ? 'move' : ''); |
|
466 if ($areaOpera) |
|
467 $areaOpera.toggle(); |
|
468 } |
|
469 |
|
470 /** |
|
471 * Document mouseup event handler |
|
472 * |
|
473 * @param event |
|
474 * The event object |
|
475 */ |
|
476 function docMouseUp(event) { |
|
477 /* Set back the default cursor */ |
|
478 $('body').css('cursor', ''); |
|
479 /* |
|
480 * If autoHide is enabled, or if the selection has zero width/height, |
|
481 * hide the selection and the outer area |
|
482 */ |
|
483 if (options.autoHide || selection.width * selection.height == 0) |
|
484 hide($box.add($outer), function () { $(this).hide(); }); |
|
485 |
|
486 $(document).unbind('mousemove', selectingMouseMove); |
|
487 $box.mousemove(areaMouseMove); |
|
488 |
|
489 options.onSelectEnd(img, getSelection()); |
|
490 } |
|
491 |
|
492 /** |
|
493 * Selection area mousedown event handler |
|
494 * |
|
495 * @param event |
|
496 * The event object |
|
497 * @return false |
|
498 */ |
|
499 function areaMouseDown(event) { |
|
500 if (event.which != 1) return false; |
|
501 |
|
502 adjust(); |
|
503 |
|
504 if (resize) { |
|
505 /* Resize mode is in effect */ |
|
506 $('body').css('cursor', resize + '-resize'); |
|
507 |
|
508 x1 = viewX(selection[/w/.test(resize) ? 'x2' : 'x1']); |
|
509 y1 = viewY(selection[/n/.test(resize) ? 'y2' : 'y1']); |
|
510 |
|
511 $(document).mousemove(selectingMouseMove) |
|
512 .one('mouseup', docMouseUp); |
|
513 $box.unbind('mousemove', areaMouseMove); |
|
514 } |
|
515 else if (options.movable) { |
|
516 startX = left + selection.x1 - evX(event); |
|
517 startY = top + selection.y1 - evY(event); |
|
518 |
|
519 $box.unbind('mousemove', areaMouseMove); |
|
520 |
|
521 $(document).mousemove(movingMouseMove) |
|
522 .one('mouseup', function () { |
|
523 options.onSelectEnd(img, getSelection()); |
|
524 |
|
525 $(document).unbind('mousemove', movingMouseMove); |
|
526 $box.mousemove(areaMouseMove); |
|
527 }); |
|
528 } |
|
529 else |
|
530 $img.mousedown(event); |
|
531 |
|
532 return false; |
|
533 } |
|
534 |
|
535 /** |
|
536 * Adjust the x2/y2 coordinates to maintain aspect ratio (if defined) |
|
537 * |
|
538 * @param xFirst |
|
539 * If set to <code>true</code>, calculate x2 first. Otherwise, |
|
540 * calculate y2 first. |
|
541 */ |
|
542 function fixAspectRatio(xFirst) { |
|
543 if (aspectRatio) |
|
544 if (xFirst) { |
|
545 x2 = max(left, min(left + imgWidth, |
|
546 x1 + abs(y2 - y1) * aspectRatio * (x2 > x1 || -1))); |
|
547 y2 = round(max(top, min(top + imgHeight, |
|
548 y1 + abs(x2 - x1) / aspectRatio * (y2 > y1 || -1)))); |
|
549 x2 = round(x2); |
|
550 } |
|
551 else { |
|
552 y2 = max(top, min(top + imgHeight, |
|
553 y1 + abs(x2 - x1) / aspectRatio * (y2 > y1 || -1))); |
|
554 x2 = round(max(left, min(left + imgWidth, |
|
555 x1 + abs(y2 - y1) * aspectRatio * (x2 > x1 || -1)))); |
|
556 y2 = round(y2); |
|
557 } |
|
558 } |
|
559 |
|
560 /** |
|
561 * Resize the selection area respecting the minimum/maximum dimensions and |
|
562 * aspect ratio |
|
563 */ |
|
564 function doResize() { |
|
565 /* |
|
566 * Make sure the top left corner of the selection area stays within |
|
567 * image boundaries (it might not if the image source was dynamically |
|
568 * changed). |
|
569 */ |
|
570 x1 = min(x1, left + imgWidth); |
|
571 y1 = min(y1, top + imgHeight); |
|
572 |
|
573 if (abs(x2 - x1) < minWidth) { |
|
574 /* Selection width is smaller than minWidth */ |
|
575 x2 = x1 - minWidth * (x2 < x1 || -1); |
|
576 |
|
577 if (x2 < left) |
|
578 x1 = left + minWidth; |
|
579 else if (x2 > left + imgWidth) |
|
580 x1 = left + imgWidth - minWidth; |
|
581 } |
|
582 |
|
583 if (abs(y2 - y1) < minHeight) { |
|
584 /* Selection height is smaller than minHeight */ |
|
585 y2 = y1 - minHeight * (y2 < y1 || -1); |
|
586 |
|
587 if (y2 < top) |
|
588 y1 = top + minHeight; |
|
589 else if (y2 > top + imgHeight) |
|
590 y1 = top + imgHeight - minHeight; |
|
591 } |
|
592 |
|
593 x2 = max(left, min(x2, left + imgWidth)); |
|
594 y2 = max(top, min(y2, top + imgHeight)); |
|
595 |
|
596 fixAspectRatio(abs(x2 - x1) < abs(y2 - y1) * aspectRatio); |
|
597 |
|
598 if (abs(x2 - x1) > maxWidth) { |
|
599 /* Selection width is greater than maxWidth */ |
|
600 x2 = x1 - maxWidth * (x2 < x1 || -1); |
|
601 fixAspectRatio(); |
|
602 } |
|
603 |
|
604 if (abs(y2 - y1) > maxHeight) { |
|
605 /* Selection height is greater than maxHeight */ |
|
606 y2 = y1 - maxHeight * (y2 < y1 || -1); |
|
607 fixAspectRatio(true); |
|
608 } |
|
609 |
|
610 selection = { x1: selX(min(x1, x2)), x2: selX(max(x1, x2)), |
|
611 y1: selY(min(y1, y2)), y2: selY(max(y1, y2)), |
|
612 width: abs(x2 - x1), height: abs(y2 - y1) }; |
|
613 |
|
614 update(); |
|
615 |
|
616 options.onSelectChange(img, getSelection()); |
|
617 } |
|
618 |
|
619 /** |
|
620 * Mousemove event handler triggered when the user is selecting an area |
|
621 * |
|
622 * @param event |
|
623 * The event object |
|
624 * @return false |
|
625 */ |
|
626 function selectingMouseMove(event) { |
|
627 x2 = /w|e|^$/.test(resize) || aspectRatio ? evX(event) : viewX(selection.x2); |
|
628 y2 = /n|s|^$/.test(resize) || aspectRatio ? evY(event) : viewY(selection.y2); |
|
629 |
|
630 doResize(); |
|
631 |
|
632 return false; |
|
633 } |
|
634 |
|
635 /** |
|
636 * Move the selection area |
|
637 * |
|
638 * @param newX1 |
|
639 * New viewport X1 |
|
640 * @param newY1 |
|
641 * New viewport Y1 |
|
642 */ |
|
643 function doMove(newX1, newY1) { |
|
644 x2 = (x1 = newX1) + selection.width; |
|
645 y2 = (y1 = newY1) + selection.height; |
|
646 |
|
647 $.extend(selection, { x1: selX(x1), y1: selY(y1), x2: selX(x2), |
|
648 y2: selY(y2) }); |
|
649 |
|
650 update(); |
|
651 |
|
652 options.onSelectChange(img, getSelection()); |
|
653 } |
|
654 |
|
655 /** |
|
656 * Mousemove event handler triggered when the selection area is being moved |
|
657 * |
|
658 * @param event |
|
659 * The event object |
|
660 * @return false |
|
661 */ |
|
662 function movingMouseMove(event) { |
|
663 x1 = max(left, min(startX + evX(event), left + imgWidth - selection.width)); |
|
664 y1 = max(top, min(startY + evY(event), top + imgHeight - selection.height)); |
|
665 |
|
666 doMove(x1, y1); |
|
667 |
|
668 event.preventDefault(); |
|
669 return false; |
|
670 } |
|
671 |
|
672 /** |
|
673 * Start selection |
|
674 */ |
|
675 function startSelection() { |
|
676 $(document).unbind('mousemove', startSelection); |
|
677 adjust(); |
|
678 |
|
679 x2 = x1; |
|
680 y2 = y1; |
|
681 doResize(); |
|
682 |
|
683 resize = ''; |
|
684 |
|
685 if (!$outer.is(':visible')) |
|
686 /* Show the plugin elements */ |
|
687 $box.add($outer).hide().fadeIn(options.fadeSpeed||0); |
|
688 |
|
689 shown = true; |
|
690 |
|
691 $(document).unbind('mouseup', cancelSelection) |
|
692 .mousemove(selectingMouseMove).one('mouseup', docMouseUp); |
|
693 $box.unbind('mousemove', areaMouseMove); |
|
694 |
|
695 options.onSelectStart(img, getSelection()); |
|
696 } |
|
697 |
|
698 /** |
|
699 * Cancel selection |
|
700 */ |
|
701 function cancelSelection() { |
|
702 $(document).unbind('mousemove', startSelection) |
|
703 .unbind('mouseup', cancelSelection); |
|
704 hide($box.add($outer)); |
|
705 |
|
706 setSelection(selX(x1), selY(y1), selX(x1), selY(y1)); |
|
707 |
|
708 /* If this is an API call, callback functions should not be triggered */ |
|
709 if (!(this instanceof $.imgAreaSelect)) { |
|
710 options.onSelectChange(img, getSelection()); |
|
711 options.onSelectEnd(img, getSelection()); |
|
712 } |
|
713 } |
|
714 |
|
715 /** |
|
716 * Image mousedown event handler |
|
717 * |
|
718 * @param event |
|
719 * The event object |
|
720 * @return false |
|
721 */ |
|
722 function imgMouseDown(event) { |
|
723 /* Ignore the event if animation is in progress */ |
|
724 if (event.which != 1 || $outer.is(':animated')) return false; |
|
725 |
|
726 adjust(); |
|
727 startX = x1 = evX(event); |
|
728 startY = y1 = evY(event); |
|
729 |
|
730 /* Selection will start when the mouse is moved */ |
|
731 $(document).mousemove(startSelection).mouseup(cancelSelection); |
|
732 |
|
733 return false; |
|
734 } |
|
735 |
|
736 /** |
|
737 * Window resize event handler |
|
738 */ |
|
739 function windowResize() { |
|
740 doUpdate(false); |
|
741 } |
|
742 |
|
743 /** |
|
744 * Image load event handler. This is the final part of the initialization |
|
745 * process. |
|
746 */ |
|
747 function imgLoad() { |
|
748 imgLoaded = true; |
|
749 |
|
750 /* Set options */ |
|
751 setOptions(options = $.extend({ |
|
752 classPrefix: 'imgareaselect', |
|
753 movable: true, |
|
754 parent: 'body', |
|
755 resizable: true, |
|
756 resizeMargin: 10, |
|
757 onInit: function () {}, |
|
758 onSelectStart: function () {}, |
|
759 onSelectChange: function () {}, |
|
760 onSelectEnd: function () {} |
|
761 }, options)); |
|
762 |
|
763 $box.add($outer).css({ visibility: '' }); |
|
764 |
|
765 if (options.show) { |
|
766 shown = true; |
|
767 adjust(); |
|
768 update(); |
|
769 $box.add($outer).hide().fadeIn(options.fadeSpeed||0); |
|
770 } |
|
771 |
|
772 /* |
|
773 * Call the onInit callback. The setTimeout() call is used to ensure |
|
774 * that the plugin has been fully initialized and the object instance is |
|
775 * available (so that it can be obtained in the callback). |
|
776 */ |
|
777 setTimeout(function () { options.onInit(img, getSelection()); }, 0); |
|
778 } |
|
779 |
|
780 /** |
|
781 * Document keypress event handler |
|
782 * |
|
783 * @param event |
|
784 * The event object |
|
785 * @return false |
|
786 */ |
|
787 var docKeyPress = function(event) { |
|
788 var k = options.keys, d, t, key = event.keyCode; |
|
789 |
|
790 d = !isNaN(k.alt) && (event.altKey || event.originalEvent.altKey) ? k.alt : |
|
791 !isNaN(k.ctrl) && event.ctrlKey ? k.ctrl : |
|
792 !isNaN(k.shift) && event.shiftKey ? k.shift : |
|
793 !isNaN(k.arrows) ? k.arrows : 10; |
|
794 |
|
795 if (k.arrows == 'resize' || (k.shift == 'resize' && event.shiftKey) || |
|
796 (k.ctrl == 'resize' && event.ctrlKey) || |
|
797 (k.alt == 'resize' && (event.altKey || event.originalEvent.altKey))) |
|
798 { |
|
799 /* Resize selection */ |
|
800 |
|
801 switch (key) { |
|
802 case 37: |
|
803 /* Left */ |
|
804 d = -d; |
|
805 case 39: |
|
806 /* Right */ |
|
807 t = max(x1, x2); |
|
808 x1 = min(x1, x2); |
|
809 x2 = max(t + d, x1); |
|
810 fixAspectRatio(); |
|
811 break; |
|
812 case 38: |
|
813 /* Up */ |
|
814 d = -d; |
|
815 case 40: |
|
816 /* Down */ |
|
817 t = max(y1, y2); |
|
818 y1 = min(y1, y2); |
|
819 y2 = max(t + d, y1); |
|
820 fixAspectRatio(true); |
|
821 break; |
|
822 default: |
|
823 return; |
|
824 } |
|
825 |
|
826 doResize(); |
|
827 } |
|
828 else { |
|
829 /* Move selection */ |
|
830 |
|
831 x1 = min(x1, x2); |
|
832 y1 = min(y1, y2); |
|
833 |
|
834 switch (key) { |
|
835 case 37: |
|
836 /* Left */ |
|
837 doMove(max(x1 - d, left), y1); |
|
838 break; |
|
839 case 38: |
|
840 /* Up */ |
|
841 doMove(x1, max(y1 - d, top)); |
|
842 break; |
|
843 case 39: |
|
844 /* Right */ |
|
845 doMove(x1 + min(d, imgWidth - selX(x2)), y1); |
|
846 break; |
|
847 case 40: |
|
848 /* Down */ |
|
849 doMove(x1, y1 + min(d, imgHeight - selY(y2))); |
|
850 break; |
|
851 default: |
|
852 return; |
|
853 } |
|
854 } |
|
855 |
|
856 return false; |
|
857 }; |
|
858 |
|
859 /** |
|
860 * Apply style options to plugin element (or multiple elements) |
|
861 * |
|
862 * @param $elem |
|
863 * A jQuery object representing the element(s) to style |
|
864 * @param props |
|
865 * An object that maps option names to corresponding CSS |
|
866 * properties |
|
867 */ |
|
868 function styleOptions($elem, props) { |
|
869 for (var option in props) |
|
870 if (options[option] !== undefined) |
|
871 $elem.css(props[option], options[option]); |
|
872 } |
|
873 |
|
874 /** |
|
875 * Set plugin options |
|
876 * |
|
877 * @param newOptions |
|
878 * The new options object |
|
879 */ |
|
880 function setOptions(newOptions) { |
|
881 if (newOptions.parent) |
|
882 ($parent = $(newOptions.parent)).append($box.add($outer)); |
|
883 |
|
884 /* Merge the new options with the existing ones */ |
|
885 $.extend(options, newOptions); |
|
886 |
|
887 adjust(); |
|
888 |
|
889 if (newOptions.handles != null) { |
|
890 /* Recreate selection area handles */ |
|
891 $handles.remove(); |
|
892 $handles = $([]); |
|
893 |
|
894 i = newOptions.handles ? newOptions.handles == 'corners' ? 4 : 8 : 0; |
|
895 |
|
896 while (i--) |
|
897 $handles = $handles.add(div()); |
|
898 |
|
899 /* Add a class to handles and set the CSS properties */ |
|
900 $handles.addClass(options.classPrefix + '-handle').css({ |
|
901 position: 'absolute', |
|
902 /* |
|
903 * The font-size property needs to be set to zero, otherwise |
|
904 * Internet Explorer makes the handles too large |
|
905 */ |
|
906 fontSize: 0, |
|
907 zIndex: zIndex + 1 || 1 |
|
908 }); |
|
909 |
|
910 /* |
|
911 * If handle width/height has not been set with CSS rules, set the |
|
912 * default 5px |
|
913 */ |
|
914 if (!parseInt($handles.css('width')) >= 0) |
|
915 $handles.width(5).height(5); |
|
916 |
|
917 /* |
|
918 * If the borderWidth option is in use, add a solid border to |
|
919 * handles |
|
920 */ |
|
921 if (o = options.borderWidth) |
|
922 $handles.css({ borderWidth: o, borderStyle: 'solid' }); |
|
923 |
|
924 /* Apply other style options */ |
|
925 styleOptions($handles, { borderColor1: 'border-color', |
|
926 borderColor2: 'background-color', |
|
927 borderOpacity: 'opacity' }); |
|
928 } |
|
929 |
|
930 /* Calculate scale factors */ |
|
931 scaleX = options.imageWidth / imgWidth || 1; |
|
932 scaleY = options.imageHeight / imgHeight || 1; |
|
933 |
|
934 /* Set selection */ |
|
935 if (newOptions.x1 != null) { |
|
936 setSelection(newOptions.x1, newOptions.y1, newOptions.x2, |
|
937 newOptions.y2); |
|
938 newOptions.show = !newOptions.hide; |
|
939 } |
|
940 |
|
941 if (newOptions.keys) |
|
942 /* Enable keyboard support */ |
|
943 options.keys = $.extend({ shift: 1, ctrl: 'resize' }, |
|
944 newOptions.keys); |
|
945 |
|
946 /* Add classes to plugin elements */ |
|
947 $outer.addClass(options.classPrefix + '-outer'); |
|
948 $area.addClass(options.classPrefix + '-selection'); |
|
949 for (i = 0; i++ < 4;) |
|
950 $($border[i-1]).addClass(options.classPrefix + '-border' + i); |
|
951 |
|
952 /* Apply style options */ |
|
953 styleOptions($area, { selectionColor: 'background-color', |
|
954 selectionOpacity: 'opacity' }); |
|
955 styleOptions($border, { borderOpacity: 'opacity', |
|
956 borderWidth: 'border-width' }); |
|
957 styleOptions($outer, { outerColor: 'background-color', |
|
958 outerOpacity: 'opacity' }); |
|
959 if (o = options.borderColor1) |
|
960 $($border[0]).css({ borderStyle: 'solid', borderColor: o }); |
|
961 if (o = options.borderColor2) |
|
962 $($border[1]).css({ borderStyle: 'dashed', borderColor: o }); |
|
963 |
|
964 /* Append all the selection area elements to the container box */ |
|
965 $box.append($area.add($border).add($areaOpera).add($handles)); |
|
966 |
|
967 if ($.browser.msie) { |
|
968 if (o = $outer.css('filter').match(/opacity=(\d+)/)) |
|
969 $outer.css('opacity', o[1]/100); |
|
970 if (o = $border.css('filter').match(/opacity=(\d+)/)) |
|
971 $border.css('opacity', o[1]/100); |
|
972 } |
|
973 |
|
974 if (newOptions.hide) |
|
975 hide($box.add($outer)); |
|
976 else if (newOptions.show && imgLoaded) { |
|
977 shown = true; |
|
978 $box.add($outer).fadeIn(options.fadeSpeed||0); |
|
979 doUpdate(); |
|
980 } |
|
981 |
|
982 /* Calculate the aspect ratio factor */ |
|
983 aspectRatio = (d = (options.aspectRatio || '').split(/:/))[0] / d[1]; |
|
984 |
|
985 $img.add($outer).unbind('mousedown', imgMouseDown); |
|
986 |
|
987 if (options.disable || options.enable === false) { |
|
988 /* Disable the plugin */ |
|
989 $box.unbind('mousemove', areaMouseMove).unbind('mousedown', areaMouseDown); |
|
990 $(window).unbind('resize', windowResize); |
|
991 } |
|
992 else { |
|
993 if (options.enable || options.disable === false) { |
|
994 /* Enable the plugin */ |
|
995 if (options.resizable || options.movable) |
|
996 $box.mousemove(areaMouseMove).mousedown(areaMouseDown); |
|
997 |
|
998 $(window).resize(windowResize); |
|
999 } |
|
1000 |
|
1001 if (!options.persistent) |
|
1002 $img.add($outer).mousedown(imgMouseDown); |
|
1003 } |
|
1004 |
|
1005 options.enable = options.disable = undefined; |
|
1006 } |
|
1007 |
|
1008 /** |
|
1009 * Remove plugin completely |
|
1010 */ |
|
1011 this.remove = function () { |
|
1012 /* |
|
1013 * Call setOptions with { disable: true } to unbind the event handlers |
|
1014 */ |
|
1015 setOptions({ disable: true }); |
|
1016 $box.add($outer).remove(); |
|
1017 }; |
|
1018 |
|
1019 /* |
|
1020 * Public API |
|
1021 */ |
|
1022 |
|
1023 /** |
|
1024 * Get current options |
|
1025 * |
|
1026 * @return An object containing the set of options currently in use |
|
1027 */ |
|
1028 this.getOptions = function () { return options; }; |
|
1029 |
|
1030 /** |
|
1031 * Set plugin options |
|
1032 * |
|
1033 * @param newOptions |
|
1034 * The new options object |
|
1035 */ |
|
1036 this.setOptions = setOptions; |
|
1037 |
|
1038 /** |
|
1039 * Get the current selection |
|
1040 * |
|
1041 * @param noScale |
|
1042 * If set to <code>true</code>, scaling is not applied to the |
|
1043 * returned selection |
|
1044 * @return Selection object |
|
1045 */ |
|
1046 this.getSelection = getSelection; |
|
1047 |
|
1048 /** |
|
1049 * Set the current selection |
|
1050 * |
|
1051 * @param x1 |
|
1052 * X coordinate of the upper left corner of the selection area |
|
1053 * @param y1 |
|
1054 * Y coordinate of the upper left corner of the selection area |
|
1055 * @param x2 |
|
1056 * X coordinate of the lower right corner of the selection area |
|
1057 * @param y2 |
|
1058 * Y coordinate of the lower right corner of the selection area |
|
1059 * @param noScale |
|
1060 * If set to <code>true</code>, scaling is not applied to the |
|
1061 * new selection |
|
1062 */ |
|
1063 this.setSelection = setSelection; |
|
1064 |
|
1065 /** |
|
1066 * Cancel selection |
|
1067 */ |
|
1068 this.cancelSelection = cancelSelection; |
|
1069 |
|
1070 /** |
|
1071 * Update plugin elements |
|
1072 * |
|
1073 * @param resetKeyPress |
|
1074 * If set to <code>false</code>, this instance's keypress |
|
1075 * event handler is not activated |
|
1076 */ |
|
1077 this.update = doUpdate; |
|
1078 |
|
1079 /* |
|
1080 * Traverse the image's parent elements (up to <body>) and find the |
|
1081 * highest z-index |
|
1082 */ |
|
1083 $p = $img; |
|
1084 |
|
1085 while ($p.length) { |
|
1086 zIndex = max(zIndex, |
|
1087 !isNaN($p.css('z-index')) ? $p.css('z-index') : zIndex); |
|
1088 /* Also check if any of the ancestor elements has fixed position */ |
|
1089 if ($p.css('position') == 'fixed') |
|
1090 position = 'fixed'; |
|
1091 |
|
1092 $p = $p.parent(':not(body)'); |
|
1093 } |
|
1094 |
|
1095 /* |
|
1096 * If z-index is given as an option, it overrides the one found by the |
|
1097 * above loop |
|
1098 */ |
|
1099 zIndex = options.zIndex || zIndex; |
|
1100 |
|
1101 if ($.browser.msie) |
|
1102 $img.attr('unselectable', 'on'); |
|
1103 |
|
1104 /* |
|
1105 * In MSIE and WebKit, we need to use the keydown event instead of keypress |
|
1106 */ |
|
1107 $.imgAreaSelect.keyPress = $.browser.msie || |
|
1108 $.browser.safari ? 'keydown' : 'keypress'; |
|
1109 |
|
1110 /* |
|
1111 * There is a bug affecting the CSS cursor property in Opera (observed in |
|
1112 * versions up to 10.00) that prevents the cursor from being updated unless |
|
1113 * the mouse leaves and enters the element again. To trigger the mouseover |
|
1114 * event, we're adding an additional div to $box and we're going to toggle |
|
1115 * it when mouse moves inside the selection area. |
|
1116 */ |
|
1117 if ($.browser.opera) |
|
1118 $areaOpera = div().css({ width: '100%', height: '100%', |
|
1119 position: 'absolute', zIndex: zIndex + 2 || 2 }); |
|
1120 |
|
1121 /* |
|
1122 * We initially set visibility to "hidden" as a workaround for a weird |
|
1123 * behaviour observed in Google Chrome 1.0.154.53 (on Windows XP). Normally |
|
1124 * we would just set display to "none", but, for some reason, if we do so |
|
1125 * then Chrome refuses to later display the element with .show() or |
|
1126 * .fadeIn(). |
|
1127 */ |
|
1128 $box.add($outer).css({ visibility: 'hidden', position: position, |
|
1129 overflow: 'hidden', zIndex: zIndex || '0' }); |
|
1130 $box.css({ zIndex: zIndex + 2 || 2 }); |
|
1131 $area.add($border).css({ position: 'absolute', fontSize: 0 }); |
|
1132 |
|
1133 /* |
|
1134 * If the image has been fully loaded, or if it is not really an image (eg. |
|
1135 * a div), call imgLoad() immediately; otherwise, bind it to be called once |
|
1136 * on image load event. |
|
1137 */ |
|
1138 img.complete || img.readyState == 'complete' || !$img.is('img') ? |
|
1139 imgLoad() : $img.one('load', imgLoad); |
|
1140 |
|
1141 /* |
|
1142 * MSIE 9.0 doesn't always fire the image load event -- resetting the src |
|
1143 * attribute seems to trigger it. The check is for version 7 and above to |
|
1144 * accommodate for MSIE 9 running in compatibility mode. |
|
1145 */ |
|
1146 if (!imgLoaded && $.browser.msie && $.browser.version >= 7) |
|
1147 img.src = img.src; |
|
1148 }; |
|
1149 |
|
1150 /** |
|
1151 * Invoke imgAreaSelect on a jQuery object containing the image(s) |
|
1152 * |
|
1153 * @param options |
|
1154 * Options object |
|
1155 * @return The jQuery object or a reference to imgAreaSelect instance (if the |
|
1156 * <code>instance</code> option was specified) |
|
1157 */ |
|
1158 $.fn.imgAreaSelect = function (options) { |
|
1159 options = options || {}; |
|
1160 |
|
1161 this.each(function () { |
|
1162 /* Is there already an imgAreaSelect instance bound to this element? */ |
|
1163 if ($(this).data('imgAreaSelect')) { |
|
1164 /* Yes there is -- is it supposed to be removed? */ |
|
1165 if (options.remove) { |
|
1166 /* Remove the plugin */ |
|
1167 $(this).data('imgAreaSelect').remove(); |
|
1168 $(this).removeData('imgAreaSelect'); |
|
1169 } |
|
1170 else |
|
1171 /* Reset options */ |
|
1172 $(this).data('imgAreaSelect').setOptions(options); |
|
1173 } |
|
1174 else if (!options.remove) { |
|
1175 /* No exising instance -- create a new one */ |
|
1176 |
|
1177 /* |
|
1178 * If neither the "enable" nor the "disable" option is present, add |
|
1179 * "enable" as the default |
|
1180 */ |
|
1181 if (options.enable === undefined && options.disable === undefined) |
|
1182 options.enable = true; |
|
1183 |
|
1184 $(this).data('imgAreaSelect', new $.imgAreaSelect(this, options)); |
|
1185 } |
|
1186 }); |
|
1187 |
|
1188 if (options.instance) |
|
1189 /* |
|
1190 * Return the imgAreaSelect instance bound to the first element in the |
|
1191 * set |
|
1192 */ |
|
1193 return $(this).data('imgAreaSelect'); |
|
1194 |
|
1195 return this; |
|
1196 }; |
|
1197 |
|
1198 })(jQuery); |