247 lines
7.1 KiB
JavaScript
247 lines
7.1 KiB
JavaScript
//>>built
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// wrapped by build app
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define("dojox/drawing/plugins/tools/Pan", ["dijit","dojo","dojox","dojo/require!dojox/drawing/plugins/_Plugin"], function(dijit,dojo,dojox){
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dojo.provide("dojox.drawing.plugins.tools.Pan");
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dojo.require("dojox.drawing.plugins._Plugin");
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dojox.drawing.plugins.tools.Pan = dojox.drawing.util.oo.declare(
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// summary:
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// A plugin that allows for a scrolling canvas. An action
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// tool is added to the toolbar that allows for panning. Holding
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// the space bar is a shortcut to that action. The canvas will
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// only pan and scroll if there are objects out of the viewable
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// area.
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// example:
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// | <div dojoType="dojox.drawing.Toolbar" drawingId="drawingNode" class="drawingToolbar vertical">
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// | <div tool="dojox.drawing.tools.Line" selected="true">Line</div>
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// | <div plugin="dojox.drawing.plugins.tools.Pan" options="{}">Pan</div>
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// | </div>
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//
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dojox.drawing.plugins._Plugin,
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function(options){
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this.domNode = options.node;
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var _scrollTimeout;
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this.toolbar = options.scope;
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this.connect(this.toolbar, "onToolClick", this, function(){
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this.onSetPan(false)
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});
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this.connect(this.keys, "onKeyUp", this, "onKeyUp");
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this.connect(this.keys, "onKeyDown", this, "onKeyDown");
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this.connect(this.keys, "onArrow", this, "onArrow");
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this.connect(this.anchors, "onAnchorUp", this, "checkBounds");
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this.connect(this.stencils, "register", this, "checkBounds");
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this.connect(this.canvas, "resize", this, "checkBounds");
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this.connect(this.canvas, "setZoom", this, "checkBounds");
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this.connect(this.canvas, "onScroll", this, function(){
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if(this._blockScroll){
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this._blockScroll = false;
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return;
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}
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_scrollTimeout && clearTimeout(_scrollTimeout);
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_scrollTimeout = setTimeout(dojo.hitch(this, "checkBounds"), 200);
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});
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this._mouseHandle = this.mouse.register(this);
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// This HAS to be called after setting initial objects or things get screwy.
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//this.checkBounds();
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},{
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selected:false,
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keyScroll:false,
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type:"dojox.drawing.plugins.tools.Pan",
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onPanUp: function(obj){
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if(obj.id == this.button.id){
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this.onSetPan(false);
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}
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},
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onKeyUp: function(evt){
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switch(evt.keyCode){
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case 32:
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this.onSetPan(false);
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break;
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case 39: case 37: case 38: case 40:
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clearInterval(this._timer);
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break;
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}
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},
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onKeyDown: function(evt){
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if(evt.keyCode == 32){
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this.onSetPan(true);
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}
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},
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interval: 20,
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onArrow: function(evt){
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if(this._timer){ clearInterval(this._timer); }
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this._timer = setInterval(dojo.hitch(this,function(evt){
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this.canvas.domNode.parentNode.scrollLeft += evt.x*10;
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this.canvas.domNode.parentNode.scrollTop += evt.y*10;
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},evt), this.interval);
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},
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onSetPan: function(/*Boolean | Event*/ bool){
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if(bool === true || bool === false){
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this.selected = !bool;
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}
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console.log('ON SET PAN:', this.selected)
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if(this.selected){
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this.selected = false;
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this.button.deselect();
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}else{
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this.selected = true;
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this.button.select();
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}
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this.mouse.setEventMode(this.selected ? "pan" : "");
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},
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onPanDrag: function(obj){
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var x = obj.x - obj.last.x;
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var y = obj.y - obj.last.y;
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this.canvas.domNode.parentNode.scrollTop -= obj.move.y;
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this.canvas.domNode.parentNode.scrollLeft -= obj.move.x;
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this.canvas.onScroll();
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},
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onUp: function(obj){
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if(obj.withinCanvas){
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this.keyScroll = true;
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}else{
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this.keyScroll = false;
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}
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},
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onStencilUp: function(obj){
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// this gets called even on click-off because of the
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// issues with TextBlock deselection
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this.checkBounds();
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},
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onStencilDrag: function(obj){
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// this gets called even on click-off because of the
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// issues with TextBlock deselection
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//this.checkBounds();
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},
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checkBounds: function(){
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//watch("CHECK BOUNDS DISABLED", true); return;
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// summary:
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// Scans all items on the canvas and checks if they are out of
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// bounds. If so, a scroll bar (in Canvas) is shown. If the position
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// is left or top, the canvas is scrolled all items are relocated
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// the distance of the scroll. Ideally, it should look as if the
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// items do not move.
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// logging stuff here so it can be turned on and off. This method is
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// very high maintenance.
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var log = function(){
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//console.log.apply(console, arguments);
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}
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var warn = function(){
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//console.warn.apply(console, arguments);
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}
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//console.clear();
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//console.time("check bounds");
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// initialize a shot-tin of vars
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var t=Infinity, r=-Infinity, b=-10000, l=10000,
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sx=0, sy=0, dy=0, dx=0,
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mx = this.stencils.group ? this.stencils.group.getTransform() : {dx:0, dy:0},
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sc = this.mouse.scrollOffset(),
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// scY, scX: the scrollbar creates the need for extra dimension
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scY = sc.left ? 10 : 0,
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scX = sc.top ? 10 : 0,
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// ch, cw: the current size of the canvas
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ch = this.canvas.height,
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cw = this.canvas.width,
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z = this.canvas.zoom,
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// pch, pcw: the normal size of the canvas (not scrolled)
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// these could change if the container resizes.
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pch = this.canvas.parentHeight,
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pcw = this.canvas.parentWidth;
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this.stencils.withSelected(function(m){
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var o = m.getBounds();
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warn("SEL BOUNDS:", o);
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t = Math.min(o.y1 + mx.dy, t);
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r = Math.max(o.x2 + mx.dx, r);
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b = Math.max(o.y2 + mx.dy, b);
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l = Math.min(o.x1 + mx.dx, l);
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});
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this.stencils.withUnselected(function(m){
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var o = m.getBounds();
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warn("UN BOUNDS:", o);
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t = Math.min(o.y1, t);
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r = Math.max(o.x2, r);
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b = Math.max(o.y2, b);
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l = Math.min(o.x1, l);
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log("----------- B:", b, o.y2)
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});
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b *= z;
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var xscroll = 0, yscroll = 0;
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log("Bottom test", "b:", b, "z:", z, "ch:", ch, "pch:", pch, "top:", sc.top, "sy:", sy, "mx.dy:", mx.dy);
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if(b > pch || sc.top ){
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log("*bottom scroll*");
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// item off bottom
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ch = Math.max(b, pch + sc.top);
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sy = sc.top;
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xscroll += this.canvas.getScrollWidth();
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}else if(!sy && ch>pch){
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log("*bottom remove*");
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// item moved from bottom
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ch = pch;
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}
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r *= z;
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if(r > pcw || sc.left){
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//log("*right scroll*");
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// item off right
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cw = Math.max(r, pcw + sc.left);
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sx = sc.left;
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yscroll += this.canvas.getScrollWidth();
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}else if(!sx && cw>pcw){
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//log("*right remove*");
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// item moved from right
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cw = pcw;
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}
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// add extra space for scrollbars
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// double it to give some breathing room
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cw += xscroll*2;
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ch += yscroll*2;
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this._blockScroll = true;
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// selected items are not transformed. The selection itself is
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// and the items are on de-select
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this.stencils.group && this.stencils.group.applyTransform({dx:dx, dy:dy});
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// non-selected items are transformed
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this.stencils.withUnselected(function(m){
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m.transformPoints({dx:dx, dy:dy});
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});
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this.canvas.setDimensions(cw, ch, sx, sy);
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//console.timeEnd("check bounds");
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}
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}
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);
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dojox.drawing.plugins.tools.Pan.setup = {
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name:"dojox.drawing.plugins.tools.Pan",
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tooltip:"Pan Tool",
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iconClass:"iconPan",
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button:false
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};
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dojox.drawing.register(dojox.drawing.plugins.tools.Pan.setup, "plugin");
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});
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