improve performance
This commit is contained in:
rofl256
parent
2d450af0ff
commit
a5274dc03d
@ -16,6 +16,7 @@ var whiteboard = {
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imgContainer : null,
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svgContainer : null, //For draw prev
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mouseOverlay : null,
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ownCursor : null,
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drawBuffer : [],
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drawId : 0, //Used for undo function
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imgDragActive : false,
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@ -126,73 +127,75 @@ var whiteboard = {
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return;
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}
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var currX = (e.offsetX || e.pageX - $(e.target).offset().left);
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var currY = (e.offsetY || e.pageY - $(e.target).offset().top);
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if((!currX || !currY) && e.touches && e.touches[0]) {
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var touche= e.touches[0];
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currX = touche.clientX - $(_this.mouseOverlay).offset().left;
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currY = touche.clientY - $(_this.mouseOverlay).offset().top;
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latestTouchCoods = [currX, currY];
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}
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if(_this.drawFlag) {
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if(_this.tool==="pen") {
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_this.drawPenLine(currX, currY, _this.prevX, _this.prevY, _this.drawcolor, _this.thickness);
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_this.sendFunction({"t":_this.tool,"d":[currX, currY, _this.prevX, _this.prevY], "c":_this.drawcolor, "th":_this.thickness});
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} else if(_this.tool=="eraser") {
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_this.drawEraserLine(currX, currY, _this.prevX, _this.prevY, _this.thickness);
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_this.sendFunction({"t":_this.tool,"d":[currX, currY, _this.prevX, _this.prevY], "th":_this.thickness});
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}
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_this.prevX =currX;
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_this.prevY =currY;
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}
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if(_this.tool==="eraser") {
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var left = currX-_this.thickness;
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var top = currY-_this.thickness;
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_this.cursorContainer.find("#ownCursor").css({"top":top+"px", "left":left+"px"});
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} else if(_this.tool==="pen") {
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var left = currX-_this.thickness/2;
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var top = currY-_this.thickness/2;
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_this.cursorContainer.find("#ownCursor").css({"top":top+"px", "left":left+"px"});
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} else if(_this.tool==="line") {
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if(svgLine) {
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if(shiftPressed) {
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var angs = getRoundedAngles(currX, currY);
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currX = angs.x;
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currY = angs.y;
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}
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svgLine.setAttribute('x2',currX);
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svgLine.setAttribute('y2',currY);
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}
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} else if(_this.tool==="rect" || (_this.tool==="recSelect" && _this.drawFlag)) {
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if(svgRect) {
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var width = Math.abs(currX-startCoords[0]);
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var height = Math.abs(currY-startCoords[1]);
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if(shiftPressed) {
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height=width;
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var x = currX<startCoords[0] ? startCoords[0]-width : startCoords[0];
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var y = currY<startCoords[1] ? startCoords[1]-width : startCoords[1];
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svgRect.setAttribute('x', x);
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svgRect.setAttribute('y', y);
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} else {
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var x = currX<startCoords[0] ? currX : startCoords[0];
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var y = currY<startCoords[1] ? currY : startCoords[1];
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svgRect.setAttribute('x', x);
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svgRect.setAttribute('y', y);
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}
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svgRect.setAttribute('width',width);
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svgRect.setAttribute('height',height);
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var currY = (e.offsetY || e.pageY - $(e.target).offset().top);
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window.requestAnimationFrame(function() {
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if((!currX || !currY) && e.touches && e.touches[0]) {
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var touche= e.touches[0];
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currX = touche.clientX - $(_this.mouseOverlay).offset().left;
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currY = touche.clientY - $(_this.mouseOverlay).offset().top;
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latestTouchCoods = [currX, currY];
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}
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} else if(_this.tool==="circle") {
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var a = currX - startCoords[0];
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var b = currY - startCoords[1];
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var r = Math.sqrt( a*a + b*b );
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if(svgCirle) {
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svgCirle.setAttribute('r', r);
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}
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}
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_this.sendFunction({"t":"cursor","event":"move","d":[currX, currY], "username":_this.settings.username});
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if(_this.drawFlag) {
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if(_this.tool==="pen") {
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_this.drawPenLine(currX, currY, _this.prevX, _this.prevY, _this.drawcolor, _this.thickness);
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_this.sendFunction({"t":_this.tool,"d":[currX, currY, _this.prevX, _this.prevY], "c":_this.drawcolor, "th":_this.thickness});
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} else if(_this.tool=="eraser") {
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_this.drawEraserLine(currX, currY, _this.prevX, _this.prevY, _this.thickness);
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_this.sendFunction({"t":_this.tool,"d":[currX, currY, _this.prevX, _this.prevY], "th":_this.thickness});
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}
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_this.prevX =currX;
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_this.prevY =currY;
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}
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if(_this.tool==="eraser") {
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var left = currX-_this.thickness;
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var top = currY-_this.thickness;
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_this.ownCursor.css({"top":top+"px", "left":left+"px"});
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} else if(_this.tool==="pen") {
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var left = currX-_this.thickness/2;
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var top = currY-_this.thickness/2;
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_this.ownCursor.css({"top":top+"px", "left":left+"px"});
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} else if(_this.tool==="line") {
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if(svgLine) {
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if(shiftPressed) {
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var angs = getRoundedAngles(currX, currY);
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currX = angs.x;
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currY = angs.y;
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}
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svgLine.setAttribute('x2',currX);
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svgLine.setAttribute('y2',currY);
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}
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} else if(_this.tool==="rect" || (_this.tool==="recSelect" && _this.drawFlag)) {
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if(svgRect) {
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var width = Math.abs(currX-startCoords[0]);
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var height = Math.abs(currY-startCoords[1]);
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if(shiftPressed) {
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height=width;
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var x = currX<startCoords[0] ? startCoords[0]-width : startCoords[0];
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var y = currY<startCoords[1] ? startCoords[1]-width : startCoords[1];
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svgRect.setAttribute('x', x);
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svgRect.setAttribute('y', y);
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} else {
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var x = currX<startCoords[0] ? currX : startCoords[0];
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var y = currY<startCoords[1] ? currY : startCoords[1];
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svgRect.setAttribute('x', x);
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svgRect.setAttribute('y', y);
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}
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svgRect.setAttribute('width',width);
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svgRect.setAttribute('height',height);
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}
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} else if(_this.tool==="circle") {
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var a = currX - startCoords[0];
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var b = currY - startCoords[1];
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var r = Math.sqrt( a*a + b*b );
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if(svgCirle) {
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svgCirle.setAttribute('r', r);
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}
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}
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});
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_this.sendFunction({"t":"cursor","event":"move","d":[currX, currY], "username":_this.settings.username});
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});
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$(_this.mouseOverlay).on("mouseup touchend touchcancel", function(e) {
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@ -306,7 +309,7 @@ var whiteboard = {
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_this.drawFlag=false;
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_this.mouseover = false;
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_this.ctx.globalCompositeOperation = _this.oldGCO;
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_this.cursorContainer.find("#ownCursor").remove();
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_this.ownCursor.remove();
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_this.svgContainer.find("line").remove();
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_this.svgContainer.find("rect").remove();
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_this.svgContainer.find("circle").remove();
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@ -325,7 +328,8 @@ var whiteboard = {
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widthHeight = widthHeight * 2;
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}
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if(_this.tool==="eraser" || _this.tool==="pen") {
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_this.cursorContainer.append('<div id="ownCursor" style="background:'+color+'; border:1px solid gray; position:absolute; width:'+widthHeight+'px; height:'+widthHeight+'px; border-radius:50%;"></div>');
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_this.ownCursor = $('<div id="ownCursor" style="background:'+color+'; border:1px solid gray; position:absolute; width:'+widthHeight+'px; height:'+widthHeight+'px; border-radius:50%;"></div>');
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_this.cursorContainer.append(_this.ownCursor);
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}
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}
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_this.mouseover = true;
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@ -576,46 +580,46 @@ var whiteboard = {
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var color = content["c"];
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var username = content["username"];
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var thickness = content["th"];
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if(tool==="line" || tool==="pen") {
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_this.drawPenLine(data[0], data[1], data[2], data[3], color, thickness);
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} else if(tool==="rect"){
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_this.drawRec(data[0], data[1], data[2], data[3], color, thickness);
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} else if(tool==="circle"){
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_this.drawCircle(data[0], data[1], data[2], color, thickness);
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} else if(tool==="eraser"){
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_this.drawEraserLine(data[0], data[1], data[2], data[3], thickness);
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} else if(tool==="eraseRec"){
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_this.eraseRec(data[0], data[1],data[2],data[3]);
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} else if(tool==="recSelect"){
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_this.dragCanvasRectContent(data[0], data[1],data[2],data[3],data[4],data[5]);
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} else if(tool==="addImgBG") {
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if(content["draw"]=="1") {
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_this.drawImgToCanvas(content["url"],data[0],data[1],data[2],data[3], doneCallback)
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} else {
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_this.drawImgToBackground(content["url"],data[0],data[1],data[2],data[3]);
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}
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} else if(tool==="clear") {
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_this.canvas.height = _this.canvas.height;
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this.imgContainer.empty();
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this.drawBuffer = [];
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this.drawId = 0;
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} else if(tool==="cursor") {
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if(content["event"]==="move") {
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if(_this.cursorContainer.find("."+content["username"]).length>=1) {
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_this.cursorContainer.find("."+content["username"]).css({"left":data[0]+"px","top":data[1]+"px" });
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window.requestAnimationFrame(function() {
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if(tool==="line" || tool==="pen") {
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_this.drawPenLine(data[0], data[1], data[2], data[3], color, thickness);
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} else if(tool==="rect"){
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_this.drawRec(data[0], data[1], data[2], data[3], color, thickness);
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} else if(tool==="circle"){
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_this.drawCircle(data[0], data[1], data[2], color, thickness);
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} else if(tool==="eraser"){
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_this.drawEraserLine(data[0], data[1], data[2], data[3], thickness);
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} else if(tool==="eraseRec"){
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_this.eraseRec(data[0], data[1],data[2],data[3]);
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} else if(tool==="recSelect"){
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_this.dragCanvasRectContent(data[0], data[1],data[2],data[3],data[4],data[5]);
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} else if(tool==="addImgBG") {
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if(content["draw"]=="1") {
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_this.drawImgToCanvas(content["url"],data[0],data[1],data[2],data[3], doneCallback)
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} else {
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_this.cursorContainer.append('<div style="font-size:0.8em; padding-left:2px; padding-right:2px; background:gray; color:white; border-radius:3px; position:absolute; left:'+data[0]+'; top:'+data[1]+';" class="userbadge '+content["username"]+'">'+
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'<div style="width:4px; height:4px; background:gray; position:absolute; top:-2px; left:-2px; border-radius:50%;"></div>'+
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content["username"]+'</div>');
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_this.drawImgToBackground(content["url"],data[0],data[1],data[2],data[3]);
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}
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} else {
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_this.cursorContainer.find("."+content["username"]).remove();
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} else if(tool==="clear") {
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_this.canvas.height = _this.canvas.height;
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this.imgContainer.empty();
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this.drawBuffer = [];
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this.drawId = 0;
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} else if(tool==="cursor" && _this.settings) {
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if(content["event"]==="move") {
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if(_this.cursorContainer.find("."+content["username"]).length>=1) {
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_this.cursorContainer.find("."+content["username"]).css({"left":data[0]+"px","top":data[1]+"px" });
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} else {
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_this.cursorContainer.append('<div style="font-size:0.8em; padding-left:2px; padding-right:2px; background:gray; color:white; border-radius:3px; position:absolute; left:'+data[0]+'; top:'+data[1]+';" class="userbadge '+content["username"]+'">'+
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'<div style="width:4px; height:4px; background:gray; position:absolute; top:-2px; left:-2px; border-radius:50%;"></div>'+
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content["username"]+'</div>');
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}
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} else {
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_this.cursorContainer.find("."+content["username"]).remove();
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}
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} else if(tool==="undo") {
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_this.undoWhiteboard(username);
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}
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} else if(tool==="undo") {
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_this.undoWhiteboard(username);
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}
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});
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if(isNewData && (tool==="line" || tool==="pen" || tool==="rect" || tool==="circle" || tool==="eraser" || tool==="addImgBG" || tool==="recSelect" || tool==="eraseRec")) {
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content["drawId"] = content["drawId"] ? content["drawId"] : _this.drawId;
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