jquery.flot.navigate.min.js 8.5 KB

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  1. /* Flot plugin for adding the ability to pan and zoom the plot.
  2. Copyright (c) 2007-2013 IOLA and Ole Laursen.
  3. Licensed under the MIT license.
  4. The default behaviour is double click and scrollwheel up/down to zoom in, drag
  5. to pan. The plugin defines plot.zoom({ center }), plot.zoomOut() and
  6. plot.pan( offset ) so you easily can add custom controls. It also fires
  7. "plotpan" and "plotzoom" events, useful for synchronizing plots.
  8. The plugin supports these options:
  9. zoom: {
  10. interactive: false
  11. trigger: "dblclick" // or "click" for single click
  12. amount: 1.5 // 2 = 200% (zoom in), 0.5 = 50% (zoom out)
  13. }
  14. pan: {
  15. interactive: false
  16. cursor: "move" // CSS mouse cursor value used when dragging, e.g. "pointer"
  17. frameRate: 20
  18. }
  19. xaxis, yaxis, x2axis, y2axis: {
  20. zoomRange: null // or [ number, number ] (min range, max range) or false
  21. panRange: null // or [ number, number ] (min, max) or false
  22. }
  23. "interactive" enables the built-in drag/click behaviour. If you enable
  24. interactive for pan, then you'll have a basic plot that supports moving
  25. around; the same for zoom.
  26. "amount" specifies the default amount to zoom in (so 1.5 = 150%) relative to
  27. the current viewport.
  28. "cursor" is a standard CSS mouse cursor string used for visual feedback to the
  29. user when dragging.
  30. "frameRate" specifies the maximum number of times per second the plot will
  31. update itself while the user is panning around on it (set to null to disable
  32. intermediate pans, the plot will then not update until the mouse button is
  33. released).
  34. "zoomRange" is the interval in which zooming can happen, e.g. with zoomRange:
  35. [1, 100] the zoom will never scale the axis so that the difference between min
  36. and max is smaller than 1 or larger than 100. You can set either end to null
  37. to ignore, e.g. [1, null]. If you set zoomRange to false, zooming on that axis
  38. will be disabled.
  39. "panRange" confines the panning to stay within a range, e.g. with panRange:
  40. [-10, 20] panning stops at -10 in one end and at 20 in the other. Either can
  41. be null, e.g. [-10, null]. If you set panRange to false, panning on that axis
  42. will be disabled.
  43. Example API usage:
  44. plot = $.plot(...);
  45. // zoom default amount in on the pixel ( 10, 20 )
  46. plot.zoom({ center: { left: 10, top: 20 } });
  47. // zoom out again
  48. plot.zoomOut({ center: { left: 10, top: 20 } });
  49. // zoom 200% in on the pixel (10, 20)
  50. plot.zoom({ amount: 2, center: { left: 10, top: 20 } });
  51. // pan 100 pixels to the left and 20 down
  52. plot.pan({ left: -100, top: 20 })
  53. Here, "center" specifies where the center of the zooming should happen. Note
  54. that this is defined in pixel space, not the space of the data points (you can
  55. use the p2c helpers on the axes in Flot to help you convert between these).
  56. "amount" is the amount to zoom the viewport relative to the current range, so
  57. 1 is 100% (i.e. no change), 1.5 is 150% (zoom in), 0.7 is 70% (zoom out). You
  58. can set the default in the options.
  59. */// First two dependencies, jquery.event.drag.js and
  60. // jquery.mousewheel.js, we put them inline here to save people the
  61. // effort of downloading them.
  62. /*
  63. jquery.event.drag.js ~ v1.5 ~ Copyright (c) 2008, Three Dub Media (http://threedubmedia.com)
  64. Licensed under the MIT License ~ http://threedubmedia.googlecode.com/files/MIT-LICENSE.txt
  65. */(function(e){function t(i){var l,h=this,p=i.data||{};if(p.elem)h=i.dragTarget=p.elem,i.dragProxy=a.proxy||h,i.cursorOffsetX=p.pageX-p.left,i.cursorOffsetY=p.pageY-p.top,i.offsetX=i.pageX-i.cursorOffsetX,i.offsetY=i.pageY-i.cursorOffsetY;else if(a.dragging||p.which>0&&i.which!=p.which||e(i.target).is(p.not))return;switch(i.type){case"mousedown":return e.extend(p,e(h).offset(),{elem:h,target:i.target,pageX:i.pageX,pageY:i.pageY}),o.add(document,"mousemove mouseup",t,p),s(h,!1),a.dragging=null,!1;case!a.dragging&&"mousemove":if(r(i.pageX-p.pageX)+r(i.pageY-p.pageY)<p.distance)break;i.target=p.target,l=n(i,"dragstart",h),l!==!1&&(a.dragging=h,a.proxy=i.dragProxy=e(l||h)[0]);case"mousemove":if(a.dragging){if(l=n(i,"drag",h),u.drop&&(u.drop.allowed=l!==!1,u.drop.handler(i)),l!==!1)break;i.type="mouseup"};case"mouseup":o.remove(document,"mousemove mouseup",t),a.dragging&&(u.drop&&u.drop.handler(i),n(i,"dragend",h)),s(h,!0),a.dragging=a.proxy=p.elem=!1}return!0}function n(t,n,r){t.type=n;var i=e.event.dispatch.call(r,t);return i===!1?!1:i||t.result}function r(e){return Math.pow(e,2)}function i(){return a.dragging===!1}function s(e,t){e&&(e.unselectable=t?"off":"on",e.onselectstart=function(){return t},e.style&&(e.style.MozUserSelect=t?"":"none"))}e.fn.drag=function(e,t,n){return t&&this.bind("dragstart",e),n&&this.bind("dragend",n),e?this.bind("drag",t?t:e):this.trigger("drag")};var o=e.event,u=o.special,a=u.drag={not:":input",distance:0,which:1,dragging:!1,setup:function(n){n=e.extend({distance:a.distance,which:a.which,not:a.not},n||{}),n.distance=r(n.distance),o.add(this,"mousedown",t,n),this.attachEvent&&this.attachEvent("ondragstart",i)},teardown:function(){o.remove(this,"mousedown",t),this===a.dragging&&(a.dragging=a.proxy=!1),s(this,!0),this.detachEvent&&this.detachEvent("ondragstart",i)}};u.dragstart=u.dragend={setup:function(){},teardown:function(){}}})(jQuery),function(e){function t(t){var n=t||window.event,r=[].slice.call(arguments,1),i=0,s=0,o=0,t=e.event.fix(n);return t.type="mousewheel",n.wheelDelta&&(i=n.wheelDelta/120),n.detail&&(i=-n.detail/3),o=i,void 0!==n.axis&&n.axis===n.HORIZONTAL_AXIS&&(o=0,s=-1*i),void 0!==n.wheelDeltaY&&(o=n.wheelDeltaY/120),void 0!==n.wheelDeltaX&&(s=-1*n.wheelDeltaX/120),r.unshift(t,i,s,o),(e.event.dispatch||e.event.handle).apply(this,r)}var n=["DOMMouseScroll","mousewheel"];if(e.event.fixHooks)for(var r=n.length;r;)e.event.fixHooks[n[--r]]=e.event.mouseHooks;e.event.special.mousewheel={setup:function(){if(this.addEventListener)for(var e=n.length;e;)this.addEventListener(n[--e],t,!1);else this.onmousewheel=t},teardown:function(){if(this.removeEventListener)for(var e=n.length;e;)this.removeEventListener(n[--e],t,!1);else this.onmousewheel=null}},e.fn.extend({mousewheel:function(e){return e?this.bind("mousewheel",e):this.trigger("mousewheel")},unmousewheel:function(e){return this.unbind("mousewheel",e)}})}(jQuery),function(e){function n(t){function n(e,n){var r=t.offset();r.left=e.pageX-r.left,r.top=e.pageY-r.top,n?t.zoomOut({center:r}):t.zoom({center:r})}function r(e,t){return e.preventDefault(),n(e,t<0),!1}function a(e){if(e.which!=1)return!1;var n=t.getPlaceholder().css("cursor");n&&(i=n),t.getPlaceholder().css("cursor",t.getOptions().pan.cursor),s=e.pageX,o=e.pageY}function f(e){var n=t.getOptions().pan.frameRate;if(u||!n)return;u=setTimeout(function(){t.pan({left:s-e.pageX,top:o-e.pageY}),s=e.pageX,o=e.pageY,u=null},1/n*1e3)}function l(e){u&&(clearTimeout(u),u=null),t.getPlaceholder().css("cursor",i),t.pan({left:s-e.pageX,top:o-e.pageY})}function c(e,t){var i=e.getOptions();i.zoom.interactive&&(t[i.zoom.trigger](n),t.mousewheel(r)),i.pan.interactive&&(t.bind("dragstart",{distance:10},a),t.bind("drag",f),t.bind("dragend",l))}function h(e,t){t.unbind(e.getOptions().zoom.trigger,n),t.unbind("mousewheel",r),t.unbind("dragstart",a),t.unbind("drag",f),t.unbind("dragend",l),u&&clearTimeout(u)}var i="default",s=0,o=0,u=null;t.zoomOut=function(e){e||(e={}),e.amount||(e.amount=t.getOptions().zoom.amount),e.amount=1/e.amount,t.zoom(e)},t.zoom=function(n){n||(n={});var r=n.center,i=n.amount||t.getOptions().zoom.amount,s=t.width(),o=t.height();r||(r={left:s/2,top:o/2});var u=r.left/s,a=r.top/o,f={x:{min:r.left-u*s/i,max:r.left+(1-u)*s/i},y:{min:r.top-a*o/i,max:r.top+(1-a)*o/i}};e.each(t.getAxes(),function(e,t){var n=t.options,r=f[t.direction].min,i=f[t.direction].max,s=n.zoomRange,o=n.panRange;if(s===!1)return;r=t.c2p(r),i=t.c2p(i);if(r>i){var u=r;r=i,i=u}o&&(o[0]!=null&&r<o[0]&&(r=o[0]),o[1]!=null&&i>o[1]&&(i=o[1]));var a=i-r;if(s&&(s[0]!=null&&a<s[0]||s[1]!=null&&a>s[1]))return;n.min=r,n.max=i}),t.setupGrid(),t.draw(),n.preventEvent||t.getPlaceholder().trigger("plotzoom",[t,n])},t.pan=function(n){var r={x:+n.left,y:+n.top};isNaN(r.x)&&(r.x=0),isNaN(r.y)&&(r.y=0),e.each(t.getAxes(),function(e,t){var n=t.options,i,s,o=r[t.direction];i=t.c2p(t.p2c(t.min)+o),s=t.c2p(t.p2c(t.max)+o);var u=n.panRange;if(u===!1)return;u&&(u[0]!=null&&u[0]>i&&(o=u[0]-i,i+=o,s+=o),u[1]!=null&&u[1]<s&&(o=u[1]-s,i+=o,s+=o)),n.min=i,n.max=s}),t.setupGrid(),t.draw(),n.preventEvent||t.getPlaceholder().trigger("plotpan",[t,n])},t.hooks.bindEvents.push(c),t.hooks.shutdown.push(h)}var t={xaxis:{zoomRange:null,panRange:null},zoom:{interactive:!1,trigger:"dblclick",amount:1.5},pan:{interactive:!1,cursor:"move",frameRate:20}};e.plot.plugins.push({init:n,options:t,name:"navigate",version:"1.3"})}(jQuery);