gridCreator/editor.html at master · grender/gridCreator · GitHub

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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title></title>

<script type="text/javascript" src="./jquery.min.js"></script>

<script type="text/javascript">

function getLimitedFunction(obj, func, freqPerSecond) {
    if (typeof func !== "function")
        throw new Error("Is not function in argument")

    var previousCheckTime = new Date().valueOf()
    var currentSecondCount = 0
    return function decoratedFunction() {
        var currentTime = new Date().valueOf()
        if (currentTime - previousCheckTime > 100) {
            previousCheckTime = currentTime
            currentSecondCount = 0
        }else {
            if (currentSecondCount >= freqPerSecond)
                return
        }
        currentSecondCount++
        func.apply(obj, arguments)
    }
}

function Block(x,y,width,height,name)
{
	this.x=x;
	this.y=y;
	this.width=width;
	this.height=height;
	this.name=name;
}


this.mainLoop=getLimitedFunction(this,function() {
	clearCanvas();
	drawGrid();
	drawBlocks();
	drawNewBlock();
},3)


var mousePressed=false;
var canvas;
var context;
var blocks=[];
var blockCandidate;
var startCreatedBlockCoord;

var fullBlockWidth;
var fullBlockHeight;
var blockSpacerWidth;
var blockSpacerHeight;

function drawBlocks() {
	for (var i=0; i < blocks.length; i++) {
		var block=blocks[i];
		drawBlock(block);
	};
}

function drawBlock(block)
{
	context.globalAlpha = 0.2;
	context.fillStyle="#aae";
	context.fillRect(block.x*fullBlockWidth+blockSpacerWidth/2,block.y*fullBlockHeight,block.width*fullBlockWidth-blockSpacerWidth,block.height*fullBlockHeight-blockSpacerHeight);

	context.globalAlpha = 0.5;
	context.strokeStyle="#000";
	context.strokeRect(block.x*fullBlockWidth+blockSpacerWidth/2,block.y*fullBlockHeight,block.width*fullBlockWidth-blockSpacerWidth,block.height*fullBlockHeight-blockSpacerHeight);

	context.globalAlpha = 0.8;
	context.font = "bold 12px sans-serif";
	context.fillText("#blockName",block.x*fullBlockWidth+blockSpacerWidth/2+2,block.y*fullBlockHeight+block.height*fullBlockHeight-blockSpacerHeight-1 );
}

function drawNewBlock() {
	if(!blockCandidate) return;
	context.globalAlpha = 0.1;
	context.fillStyle="#aae";
	context.fillRect(blockCandidate.x*fullBlockWidth+blockSpacerWidth/2,blockCandidate.y*fullBlockHeight,blockCandidate.width*fullBlockWidth-blockSpacerWidth,blockCandidate.height*fullBlockHeight-blockSpacerHeight);
}

function parseParam(val)
{
	var typeParseRegExp=/([0-9]*)(em|pt|px)?/g;
	var parsedInput=typeParseRegExp.exec(val);
	var val=parsedInput[1];
	var dim=parsedInput[2];
	if(!dim)
	{
		return parseFloat(val);
	}else {
		return convert(val,dim,"px");
	}
}

function readParams()
{
	var nameRegExp=/(width|height)+/g
	var res={};
	var childrens=$("#paramForm>input, #paramForm>div>input");
	for(var i=0;i<childrens.length;i++)
	{
		if(nameRegExp.test(childrens[i].id.toLowerCase()))
		{
			res[childrens[i].id]=parseParam(childrens[i].value);
		}else {
			res[childrens[i].id]=parseFloat(childrens[i].value);
		}
	}
	return res;
}

function convert(val,from,to)
{
	if(!val)
		return 0;
	var convertMtply={
		ptToPx:1.5,
		pxToEm: 1/16,
		ptToEm: 1/12
	};
	from=from.toLowerCase();
	to=to.toLowerCase();
	if(from==to)
		return parseFloat(val);
	if(from!="pt" && from!="em" && from!="px")
		throw new Error("error value type");
	if(to!="pt" && to!="em" && to!="px")
		throw new Error("error value type");

	var p1=from;
	var p2=to;
	var param=p1+"To"+p2[0].toUpperCase()+p2.slice(1);
	var mltply=1;
	if(convertMtply[param])
		mltply=convertMtply[param];
	else {
		param=p2+"To"+p1[0].toUpperCase()+p1.slice(1);
		if(convertMtply[param])
			mltply=1/convertMtply[param];
		else
			throw new Error("not found this convert value");
	}
	return parseFloat(val)*mltply;
}


function drawGrid()
{
	context.lineWidth=1;
	context.strokeStyle = "#aaa";
	context.beginPath();
	for(var y=0;y<paramObj.fullHeight;y=y+paramObj.fontHeight*paramObj.interlinearFactor)
	{
		context.moveTo(0,y);
		context.lineTo(paramObj.fullWidth,y);
	}
	context.closePath();
	context.stroke();

	context.globalAlpha = 0.2;
	context.fillStyle="#eaa";
	for(var y=0;y<paramObj.fullHeight;y=y+paramObj.fontHeight*paramObj.interlinearFactor*(paramObj.horizBlockRowCount+1))
		context.fillRect(0, y, paramObj.fullWidth, paramObj.fontHeight*paramObj.interlinearFactor*paramObj.horizBlockRowCount);


	context.fillStyle="#faa";
	for(var i=0;i<paramObj.verticalBlockCount;i++)
		context.fillRect(i*(paramObj.verticalBlockWidth+paramObj.verticalBlockSpacerWidth)+blockSpacerWidth/2, 0,paramObj.verticalBlockWidth , paramObj.fullHeight);
}

function clearCanvas()
{
	$("#mainCanvas")[0].width=paramObj.fullWidth;
	$("#mainCanvas")[0].height=paramObj.fullHeight;
}

function updateBlockCandidate(pos)
{
	var spacerWidth=(paramObj.verticalBlockWidth+paramObj.verticalBlockSpacerWidth);
	var spacerHeight=(paramObj.fontHeight*paramObj.interlinearFactor*(paramObj.horizBlockRowCount+1) );

	var xStartIdx=Math.floor(startCreatedBlockCoord.x/spacerWidth);
	var yStartIdx=Math.floor(startCreatedBlockCoord.y/(paramObj.fontHeight*paramObj.interlinearFactor*(paramObj.horizBlockRowCount)));


	var xIdx=Math.floor(pos.x/spacerWidth)+1;
	var yIdx=Math.floor(pos.y/(paramObj.fontHeight*paramObj.interlinearFactor*(paramObj.horizBlockRowCount)))+1;

	if(xStartIdx>xIdx)
	{
		var temp=xStartIdx;
		xStartIdx=xIdx;
		xIdx=temp;
	}

	if(yStartIdx>yIdx)
	{
		var temp=yStartIdx;
		yStartIdx=yIdx;
		yIdx=temp;
	}

	blockCandidate= new Block(xStartIdx,yStartIdx,xIdx-xStartIdx,yIdx-yStartIdx);
}

function checkNumCols()
{
	var fullWidth=parseParam($("#fullWidth").val());
	var blockCount=$("#verticalBlockCount").val();
	var blockWidth=parseParam($("#verticalBlockWidth").val());
	var spacerWidth=parseParam($("#verticalBlockSpacerWidth").val());

	var diff=fullWidth-blockCount*(blockWidth+spacerWidth);
	if(diff!=0)
	{
		fullWidth=fullWidth-diff;
	}
	$("#fullWidth").val(fullWidth);
}

function keyUpOnForm()
{
	checkNumCols();
	readFromForm();
	$("#rowHeight").html(paramObj.fontHeight*paramObj.interlinearFactor);
}

function readFromForm()
{
	canvas=$("#mainCanvas").get(0);
	context=canvas.getContext("2d");
	window.paramObj=readParams();

	fullBlockWidth=paramObj.verticalBlockWidth+paramObj.verticalBlockSpacerWidth;
	fullBlockHeight=paramObj.fontHeight*paramObj.interlinearFactor*(paramObj.horizBlockRowCount+1);
	blockSpacerWidth=paramObj.verticalBlockSpacerWidth;
	blockSpacerHeight=paramObj.fontHeight*paramObj.interlinearFactor;
}

function mouseDownCreate(pos)
{
	startCreatedBlockCoord=pos;
	updateBlockCandidate(pos);
}

function mouseUpCreate(pos)
{
	updateBlockCandidate(pos);
	if(blockCandidate)
		blocks.push(blockCandidate);
	blockCandidate=null;
	mousePressed=false;
	mainLoop();
}

function mouseMoveCreate(pos)
{
	updateBlockCandidate(pos);
	mainLoop();
}

$(document).ready(function() {
	$("#do").click(function() {
		readFromForm();
		blocks=[];
		mainLoop();
	});


	$("#mainCanvas").mousedown(function(e) {
		var x = e.pageX - this.offsetLeft;
		var y = e.pageY - this.offsetTop;
		mouseDownCreate({x:x,y:y});
		mousePressed=true;
	});

	$("#mainCanvas").mouseup(function(e) {
        var x = e.pageX - this.offsetLeft;
        var y = e.pageY - this.offsetTop;
		mouseUpCreate({x:x,y:y});
	});

	$("#mainCanvas").mousemove(function(e) {
		if(mousePressed) {
	        var x = e.pageX - this.offsetLeft;
	        var y = e.pageY - this.offsetTop;
			mouseMoveCreate({x:x,y:y});
		}
	});

	$("#paramForm>input, #paramForm>div>input").keyup(keyUpOnForm);

});


</script>

<style>
.verticalEditForm {
	border: 1px solid gray;
}
</style>

</head>
<body>
<div id="paramForm">
Общая ширина: <input type="text" id="fullWidth" value="960px"></input><br>
Общая высота: <input type="text" id="fullHeight" value="2000px"></input><br>
Высота шрифта: <input type="text" id="fontHeight" value="12pt"></input><br>
Междустрочный интервал: <input type="text" id="interlinearFactor" value="1.5"></input><br>
Высота строки: <span id="rowHeight"></span><br>
Строк в горизонтальном блоке: <input type="text" id="horizBlockRowCount" value="3"></input><br>
<div class="verticalEditForm">
	Количество вертикальных блоков: <input type="text" id="verticalBlockCount" value="12"></input><br>
	Ширина вертикального блока: <input type="text" id="verticalBlockWidth" value="60px"></input><br>
	Расстояние между блоками: <input type="text" id="verticalBlockSpacerWidth" value="20px"></input><br>
</div>
<button id="do">Создать канвас</button>
</div>
<canvas id="mainCanvas" style="border: 1px solid;">
</canvas>
</body>
</html>