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canvasPlot.js
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canvasPlot.js
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/**
* @author gjtool
* @created 2022/01/13
* @update 2022/10/25
*/
; (function (g, fn) {
var version = "1.1.8";
console.log("canvasPlot.js v" + version + " https://www.gjtool.cn");
if (typeof define === 'function' && define.amd) {
define(function () {
return fn(g, version)
})
} else if (typeof module !== 'undefined' && module.exports) {
module.exports = fn(g, version)
} else {
g.CanvasPlot = fn(g, version)
}
})(typeof window !== 'undefined' ? window : this, function (g, version) {
'use strict';
function CanvasPlot(options) {
if (Object.prototype.toString.call(options) !== '[object Object]') {
throw Error("new CanvasPlot(options). Parameter 'options' must be an object.")
}
var sideLength = 10;
var x, y, w, h;
var canvas = document.createElement("canvas");
this.version = version;
var parentNode = options.parentNode instanceof HTMLElement ? options.parentNode : document.body;
var deleteBtnText = options.deleteBtnText || "删除";
var selectionBorderColor = options.selectionBorderColor || '#00ff00';
var selectionBorderWidth = options.selectionBorderWidth || 1;
var selectionRectColor = options.selectionRectColor || '#00ff00';
var selectionFillColor = options.selectionFillColor || '#ffffff';
var rectBgColor = options.rectBgColor || "rgba(255, 255, 255, 0)";
var selectionDrawComplex = true;
var borderColor = options.borderColor || "#0d0efd";
var imagePath = options.imagePath || "";
var showMenuBool = options.showMenu || false;
var dragMoveButton = options.dragMoveButton || "middleClick"; //rightClick middleClick
canvas.width = options.width || parentNode.offsetWidth;
canvas.height = options.height || parentNode.offsetHeight;
// canvas.style = options.border ? 'border: ' + options.border : 'border: 1px solid black';
var dragStart, dragged, moveEnd = { x: canvas.width / 2, y: canvas.height / 2 };
var old = parentNode.querySelector("canvas");
if (old) {
parentNode.removeChild(old)
}
parentNode.appendChild(canvas);
var ctx = canvas.getContext('2d');
var styleBorderLeft = 0;
var styleBorderTop = 0;
// ctx.fillStyle = "#ffffff";
// ctx.fillRect(0, 0, canvas.width, canvas.height);
if (g && g.getComputedStyle) {
styleBorderLeft = parseFloat(g.getComputedStyle(canvas)['borderLeftWidth']) || 0;
styleBorderTop = parseFloat(g.getComputedStyle(canvas)['borderTopWidth']) || 0;
}
var canvasLeft = getElementOffset(parentNode).offsetX;
var canvasTop = getElementOffset(parentNode).offsetY;
var html = document.body.parentNode;
var htmlTop = html.offsetTop;
var htmlLeft = html.offsetLeft;
var valid = false;
var plotCaches = [];
var canvasDragZoom = true;
var dragDrawing = false;
var selection = null;
var dragDrawOnce = false;
var dragoffx = 0;
var dragoffy = 0;
var p1 = { x: 0, y: 0 };
var p2 = { x: 0, y: 0 };
var drawingType;
var image = null;
var timer = null;
var eventType = {};
var dragTL, dragTM, dragTR, dragRM, dragBL, dragBM, dragBR, dragLM;
var _this = this;
if (showMenuBool) {
var r_menu = document.createElement('div');
r_menu.className = 'right_menu';
r_menu.style.position = "absolute";
r_menu.style.background = "#ffffff";
r_menu.style.border = "solid 1px #ebeef5";
r_menu.style.display = "none";
r_menu.style.borderRadius = "4px";
r_menu.style.boxShadow = "0 2px 12px 0 rgb(0 0 0 / 10%)";
parentNode.appendChild(r_menu);
r_menu.addEventListener("click", function (e) {
var li = e.target;
if (li.nodeName.toLowerCase() === 'li') {
var index = li.getAttribute("index")
if (index == 0) {
_this.delPlot(selection)
selection = null;
r_menu.style.display = "none";
}
if (index == 1) {
r_menu.style.display = "none";
}
}
}, true)
}
canvas.addEventListener('selectstart', function (e) {
e.preventDefault();
return false;
}, false);
canvas.oncontextmenu = function (e) {
e.preventDefault();
if (r_menu) {
r_menu.style.display = "none"
}
if (selection && selection.disabled) {
return
}
if (selection && (selection.dragging || selection.resizing)) {
return
}
if (drawingType === "rect") {
var mouse = _this.getMouse(e);
var mx = mouse.x;
var my = mouse.y;
var offset = getOffset();
mx += offset.x;
my += offset.y;
if (showMenuBool) {
r_menu.style.display = "none"
}
var plots = plotCaches;
var l = plots.length;
var tmpSelected = false;
for (var i = l - 1; i >= 0; i--) {
var plot = plots[i];
if (plot.contains(mx, my) && tmpSelected === false) {
if (plot.disabled) {
plot.selected = false;
plot.delselected = false;
valid = false;
selection = null;
return false
}
selection = plot;
plot.selected = true;
plot.delselected = true;
valid = false;
tmpSelected = true;
if (showMenuBool) {
showMenu(e);
}
_this.fire("rightClick", e, selection)
} else {
plot.selected = false;
plot.delselected = false;
valid = false;
}
}
if (tmpSelected === false) {
selection = null;
}
}
return false;
};
canvas.addEventListener('mousedown', mouseDownClick, true);
canvas.addEventListener('mousemove', function (e) {
if (e.button === 1) {
return
}
var mouse = _this.getMouse(e);
var mx = mouse.x;
var my = mouse.y;
moveEnd.x = mx;
moveEnd.y = my;
if (selection && selection.disabled) {
return
}
if (drawingType === "rect") {
var offset = getOffset();
mx += offset.x;
my += offset.y;
if (selection && selection.dragging) {
selection.x = (mx - dragoffx) / offset.scale;
selection.y = (my - dragoffy) / offset.scale;
valid = false;
_this.fire("dragPlotMove", selection)
} else {
this.style.cursor = 'auto';
}
if (selection && selection.resizing) {
mouseMoveSelected(e, selection);
}
var plots = plotCaches;
var l = plots.length;
for (var i = l - 1; i >= 0; i--) {
var plot = plots[i];
if (plot.contains(mx, my)) {
if (plot.disabled) {
return
}
if (selection === plot) {
var state = plot.getCheckSideLengthResult(mx, my);
switch (state) {
case "topL":
e.target.style.cursor = 'nw-resize';
break;
case "topM":
e.target.style.cursor = 'n-resize';
break;
case "topR":
e.target.style.cursor = 'ne-resize';
break;
case "rightM":
e.target.style.cursor = 'e-resize';
break;
case "rightM":
e.target.style.cursor = 'e-resize';
break;
case "bottomL":
e.target.style.cursor = 'sw-resize';
break;
case "bottomM":
e.target.style.cursor = 's-resize';
break;
case "bottomR":
e.target.style.cursor = 'se-resize';
break;
case "leftM":
e.target.style.cursor = 'w-resize';
break;
default:
this.style.cursor = 'move';
break;
}
}
break;
}
}
}
}, true);
canvas.addEventListener('mouseup', function (e) {
if (e.button === 1) {
return
}
var mouse = _this.getMouse(e);
var mx = mouse.x;
var my = mouse.y;
moveEnd.x = mx;
moveEnd.y = my;
if (canvasDragZoom && e.button === 2) {
} else {
if (selection && selection.disabled) {
return
}
if (selection) {
selection.dragging = false;
selection.resizing = false;
mouseUpSelected(e);
}
}
this.style.cursor = 'auto';
}, true);
canvas.addEventListener('dblclick', function (e) {
if (e.button === 1) {
return
}
if (selection && selection.disabled) {
return
}
if (selection && (selection.dragging || selection.resizing)) {
return
}
_this.fire("dblclick", selection)
}, true);
var zoom = function (clicks) { //0.75
if (canvasDragZoom) {
if (clicks == 1) return;
var pt = ctx.transformedPoint(moveEnd.x, moveEnd.y);
ctx.translate(pt.x, pt.y);
var factor = Math.pow(1.1, clicks);
ctx.scale(factor, factor);
ctx.translate(-pt.x, -pt.y);
redraw();
var offset = getOffset();
_this.fire("zoom", offset)
}
}
var handleScroll = function (e) {
if (canvasDragZoom) {
var delta = e.wheelDelta ? e.wheelDelta / 200 : e.detail ? -e.detail : 0;
if (delta) zoom(delta);
if (r_menu) {
r_menu.style.display = "none"
}
return e.preventDefault() && false;
}
};
canvas.addEventListener('DOMMouseScroll', handleScroll, false);
canvas.addEventListener('mousewheel', handleScroll, false);
function redraw() {
_this.clear()
ctx.save();
ctx.setTransform(1, 0, 0, 1, 0, 0);
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.restore();
valid = false;
_this.draw()
}
function trackTransforms(ctx) {
var svg = document.createElementNS("http://www.w3.org/2000/svg", 'svg');
var xform = svg.createSVGMatrix();
ctx.getTransform = function () { return xform; };
var savedTransforms = [];
var save = ctx.save;
ctx.save = function () {
if (canvasDragZoom) {
savedTransforms.push(xform.translate(0, 0));
return save.call(ctx);
}
};
var restore = ctx.restore;
ctx.restore = function () {
if (canvasDragZoom) {
xform = savedTransforms.pop();
return restore.call(ctx);
}
};
var scale = ctx.scale;
ctx.scale = function (sx, sy) {
if (canvasDragZoom) {
xform = xform.scaleNonUniform(sx, sy);
return scale.call(ctx, sx, sy);
}
};
var rotate = ctx.rotate;
ctx.rotate = function (radians) {
if (canvasDragZoom) {
xform = xform.rotate(radians * 180 / Math.PI);
return rotate.call(ctx, radians);
}
};
var translate = ctx.translate;
ctx.translate = function (dx, dy) {
if (canvasDragZoom) {
xform = xform.translate(dx, dy);
return translate.call(ctx, dx, dy);
}
};
var transform = ctx.transform;
ctx.transform = function (a, b, c, d, e, f) {
if (canvasDragZoom) {
var m2 = svg.createSVGMatrix();
m2.a = a; m2.b = b; m2.c = c; m2.d = d; m2.e = e; m2.f = f;
xform = xform.multiply(m2);
return transform.call(ctx, a, b, c, d, e, f);
}
};
var setTransform = ctx.setTransform;
ctx.setTransform = function (a, b, c, d, e, f) {
if (canvasDragZoom) {
xform.a = a;
xform.b = b;
xform.c = c;
xform.d = d;
xform.e = e;
xform.f = f;
return setTransform.call(ctx, a, b, c, d, e, f);
}
};
var pt = svg.createSVGPoint();
ctx.transformedPoint = function (x, y) {
if (canvasDragZoom) {
pt.x = x; pt.y = y;
return pt.matrixTransform(xform.inverse());
}
}
}
function showMenu(e) {
var bounding = parentNode.getBoundingClientRect()
var l = e.clientX - bounding.left;
var t = e.clientY - bounding.top;
e.cancelBubble = true;
r_menu.innerHTML = '<ul style="margin: 0;padding: 10px 0;list-style: none;font-size:12px;"><li index="0" style="padding: 0px 10px;cursor: pointer;color:red;">' + deleteBtnText + '</li></ul>'
r_menu.style.left = l + 'px'
r_menu.style.top = t + 'px'
r_menu.style.display = "block";
}
function mouseDrawRect(e) {
if (e.button === 1) {
return
}
if (!dragDrawing) {
return
}
var offset = getOffset()
p2.x = e.offsetX;
p2.y = e.offsetY;
if (drawingType === 'rect') {
var width = Math.abs(p1.x - p2.x);
var height = Math.abs(p1.y - p2.y);
_this.clear()
ctx.beginPath();
x = p1.x; y = p1.y;
if (p2.x >= x) {
if (p2.y >= y) {
w = width;
h = height
} else {
w = width;
h = -height
}
} else {
if (p2.y >= y) {
w = - width;
h = height
} else {
w = - width;
h = - height
}
}
valid = false;
_this.draw()
x += offset.x;
y += offset.y;
x = x / offset.scale;
y = y / offset.scale;
w = w / offset.scale;
h = h / offset.scale;
ctx.strokeRect(x, y, w, h);
ctx.fillStyle = rectBgColor;
ctx.fillRect(x, y, w, h);
_this.fire("drawing", selection)
}
}
function mouseDrawCancel(e) {
if (e.button === 1) {
return
}
if (drawingType === "rect") {
if (w < 0 || h < 0) {
x = x + w;
y = y + h;
w = -w;
h = -h;
}
if (x !== undefined && y !== undefined && w !== undefined && h !== undefined && w >= 5 && h >= 5) {
_this.addPlot({
x, y, w, h, color: rectBgColor
});
}
plotCaches = deduplication(plotCaches)
canvas.removeEventListener("mousemove", mouseDrawRect);
if (dragDrawOnce) {
dragDrawing = false
}
canvas.removeEventListener("mouseup", mouseDrawCancel);
x = undefined; y = undefined; w = undefined; h = undefined;
p1 = { x: 0, y: 0 };
p2 = { x: 0, y: 0 };
}
_this.fire("drawFinish", selection)
}
function mouseDownClick(e) {
selection = null;
var rightClick = 2;
var midddleClick = 1
if (dragMoveButton === "rightClick") {
rightClick = 2;
midddleClick = 1
} else if (dragMoveButton === "middleClick") {
rightClick = 1;
midddleClick = 2
}
if (r_menu) {
r_menu.style.display = "none"
}
if (e.button === midddleClick) {
return
}
var mouse = _this.getMouse(e);
var mx = mouse.x;
var my = mouse.y;
moveEnd.x = mx;
moveEnd.y = my;
if (canvasDragZoom && e.button === rightClick) {
var mouse = _this.getMouse(e);
var mx = mouse.x;
var my = mouse.y;
document.body.style.mozUserSelect = document.body.style.webkitUserSelect = document.body.style.userSelect = 'none';
dragStart = ctx.transformedPoint(mx, my);
dragged = false;
canvas.addEventListener("mousemove", mouseDragMove);
canvas.addEventListener("mouseup", mouseDragMoveCancel)
} else {
var offset = getOffset();
mx += offset.x;
my += offset.y;
ctx.strokeStyle = borderColor
ctx.lineWidth = selectionBorderWidth
var plots = plotCaches;
var l = plots.length;
var tmpSelected = false;
if (drawingType === "rect") {
for (var i = l - 1; i >= 0; i--) {
var plot = plots[i];
if (plot.contains(mx, my) && tmpSelected === false) {
if (plot.disabled) {
selection = null;
plot.delselected = false;
plot.selected = false;
valid = false;
return
}
selection = plot;
selection.dragging = true;
dragoffx = mx - plot.x * offset.scale;
dragoffy = my - plot.y * offset.scale;
if (selection === plot) {
if (plots[i].getCheckSideLengthResult(mx, my)) {
mouseDownSelected(e, plot);
selection.resizing = true;
selection.dragging = false;
} else {
selection.resizing = false;
}
}
plot.delselected = false;
plot.selected = true;
valid = false;
tmpSelected = true;
} else {
plot.delselected = false;
plot.selected = false;
valid = false;
}
}
if (tmpSelected === false) {
selection = null;
}
if (selection) {
canvas.style.cursor = 'move';
_this.toTop(selection)
}
if (selection && (selection.dragging || selection.resizing)) {
return
}
p1.x = e.offsetX;
p1.y = e.offsetY;
canvas.addEventListener("mousemove", mouseDrawRect);
canvas.addEventListener("mouseup", mouseDrawCancel)
} else {
for (var i = l - 1; i >= 0; i--) {
var plot = plots[i];
if (plot.contains(mx, my) && tmpSelected === false) {
if (plot.disabled) {
selection = null;
plot.delselected = false;
plot.selected = false;
valid = false;
return
}
selection = plot;
selection.dragging = false;
selection.resizing = false;
plot.delselected = false;
plot.selected = true;
valid = false;
tmpSelected = true;
} else {
plot.delselected = false;
plot.selected = false;
valid = false;
}
}
}
}
}
function mouseDragMove(e) {
if (canvasDragZoom) {
var mouse = _this.getMouse(e);
var mx = mouse.x;
var my = mouse.y;
dragged = true;
if (dragStart) {
var pt = ctx.transformedPoint(mx, my);
ctx.translate(pt.x - dragStart.x, pt.y - dragStart.y);
redraw();
}
}
}
function mouseDragMoveCancel(e) {
if (canvasDragZoom) {
_this.fire("dragMoveFinish", dragStart)
dragStart = null;
if (!dragged) zoom(e.shiftKey ? -1 : 1);
canvas.removeEventListener("mousemove", mouseDragMove);
canvas.removeEventListener("mouseup", mouseDragMoveCancel);
}
}
function mouseDownSelected(e, plot) {
if (plot.disabled) {
return
}
var offset = getOffset()
var mouse = _this.getMouse(e);
var mouseX = mouse.x + offset.x;
var mouseY = mouse.y + offset.y;
if (drawingType === "rect") {
var state = plot.getCheckSideLengthResult(mouseX, mouseY);
switch (state) {
case "topL":
dragTL = true;
e.target.style.cursor = 'nw-resize';
break;
case "topM":
dragTM = true;
e.target.style.cursor = 'n-resize';
break;
case "topR":
dragTR = true;
e.target.style.cursor = 'ne-resize';
break;
case "rightM":
dragRM = true;
e.target.style.cursor = 'e-resize';
break;
case "rightM":
dragRM = true;
e.target.style.cursor = 'e-resize';
break;
case "bottomL":
dragBL = true;
e.target.style.cursor = 'sw-resize';
break;
case "bottomM":
dragBM = true;
e.target.style.cursor = 's-resize';
break;
case "bottomR":
dragBR = true;
e.target.style.cursor = 'se-resize';
break;
case "leftM":
dragLM = true;
e.target.style.cursor = 'w-resize';
break;
default:
break;
}
valid = false;
}
};
function mouseUpSelected(e) {
if (drawingType === "rect") {
dragTL = dragTM = dragTR = dragRM = dragBL = dragBM = dragBR = dragLM = false;
}
_this.fire("select", selection);
};
function mouseMoveSelected(e, plot) {
var offset = getOffset();
var mouse = _this.getMouse(e);
var mouseX = (mouse.x + offset.x) / offset.scale;
var mouseY = (mouse.y + offset.y) / offset.scale;
var rx = plot.x;
var ry = plot.y;
var rw = plot.w;
var rh = plot.h;
if (drawingType === "rect") {
if (dragTL) {
e.target.style.cursor = 'nw-resize';
if (((rx + rw) - mouseX) < 0) {
dragTL = false;
dragTR = true;
}
if (((ry + rh) - mouseY) < 0) {
dragTL = false;
dragBL = true;
}
plot.w += rx - mouseX;
plot.h += ry - mouseY;
plot.x = mouseX;
plot.y = mouseY;
}
else if (dragTM) {
e.target.style.cursor = 'n-resize';
if ((rx - mouseX) > 0) {
dragTM = false;
dragBM = true;
}
if (((ry + rh) - mouseY) < 0) {
dragTM = false;
dragBM = true;
}
plot.h += ry - mouseY;
plot.y = mouseY;
}
else if (dragTR) {
e.target.style.cursor = 'ne-resize';
if ((rx - mouseX) > 0) {
dragTR = false;
dragTL = true;
}
if (((ry + rh) - mouseY) < 0) {
dragTR = false;
dragBR = true;
}
plot.w = Math.abs(rx - mouseX);
plot.h += ry - mouseY;
plot.y = mouseY;
}
else if (dragRM) {
e.target.style.cursor = 'e-resize';
if ((rx - mouseX) > 0) {
dragRM = false;
dragLM = true;
}
if (((ry + rh) - mouseY) < 0) {
dragRM = false;
dragLM = true;
}
plot.w += (mouseX - rx - rw);
}
else if (dragBL) {
e.target.style.cursor = 'sw-resize';
if (((rx + rw) - mouseX) < 0) {
dragBL = false;
dragBR = true;
}
if ((ry - mouseY) > 0) {
dragBL = false;
dragTL = true;
}
plot.w += rx - mouseX;
plot.h = Math.abs(ry - mouseY);
plot.x = mouseX;
}
else if (dragBM) {
e.target.style.cursor = 's-resize';
if ((rx - mouseX) > 0) {
dragBM = false;
dragTM = true;
}
if ((ry - mouseY) > 0) {
dragBM = false;
dragTM = true;
}
plot.h += (mouseY - ry - rh);
}
else if (dragBR) {
e.target.style.cursor = 'se-resize';
if ((rx - mouseX) > 0) {
dragBR = false;
dragBL = true;
}
if ((ry - mouseY) > 0) {
dragBR = false;
dragTR = true;
}
plot.w = Math.abs(rx - mouseX);
plot.h = Math.abs(ry - mouseY);
}
else if (dragLM) {
e.target.style.cursor = 'w-resize';
if (((rx + rw) - mouseX) < 0) {
dragLM = false;
dragRM = true;
}
if (((ry + rh) - mouseY) < 0) {
dragLM = false;
dragRM = true;
}
plot.w += rx - mouseX;
plot.x = mouseX;
}
valid = false;
_this.fire("drawMove", selection)
}
};
function getOffset() {
var xform = ctx.getTransform();
return {
scale: xform.d,
x: -xform.e,
y: -xform.f
}
}
CanvasPlot.prototype.getOffset = getOffset;
function setOffset(offset) {
ctx.setTransform(offset.scale, 0, 0, offset.scale, -offset.x, -offset.y);
redraw()
}
CanvasPlot.prototype.setOffset = setOffset;
CanvasPlot.prototype.destroy = function () {
this.clear();
parentNode.removeChild(canvas);
plotCaches = [];
canvasDragZoom = true;
dragDrawing = false;
selection = null;
dragDrawOnce = false;
dragoffx = 0;
dragoffy = 0;
p1 = { x: 0, y: 0 };
p2 = { x: 0, y: 0 };
drawingType;
image = null;
timer = null;
eventType = {};
dragTL = dragTM = dragTR = dragRM = dragBL = dragBM = dragBR = dragLM = false;
}
CanvasPlot.prototype.render = function () {
var _this = this;
if (imagePath) {
this.addImage(imagePath)
}
clearInterval(timer)
timer = setInterval(function () {
_this.draw();
}, 100);
}
CanvasPlot.prototype.resize = function () {
canvas.width = options.width || parentNode.offsetWidth;
canvas.height = options.height || parentNode.offsetHeight;
this.render();
var offset = getOffset();
setOffset(offset);
}
CanvasPlot.prototype.getData = function () {
return {
offset: getOffset(),
data: plotCaches
}
}
CanvasPlot.prototype.setData = function (obj) {
if (obj.offset) {
setOffset(obj.offset)
}
if (obj.data) {
for (var i = 0; i < obj.data.length; i++) {
obj.data[i].color = obj.data[i].color || rectBgColor;
this.addRect(obj.data[i])
}
}
}
CanvasPlot.prototype.getPlotCaches = function () {
return plotCaches;
}
CanvasPlot.prototype.getSelection = function () {
return selection;
}
CanvasPlot.prototype.addImage = function (url, x, y) {
var width = canvas.width;
var height = canvas.height;
if (image && image.loaded) {
if (x !== undefined && y !== undefined) {
ctx.drawImage(image, x, y);
} else {
// ctx.drawImage(image, (width - image.width) / 2, (height - image.height) / 2);
ctx.drawImage(image, 10, 10);
}
} else {
var img = new Image();
img.src = url;
img.onload = function () {
image = img;
img.loaded = true
var w = img.width;
var h = img.height;
if (x !== undefined && y !== undefined) {
ctx.drawImage(img, x, y);
} else {
// ctx.drawImage(img, (width - w) / 2, (height - h) / 2);
ctx.drawImage(img, 10, 10);
}
}
}
};
CanvasPlot.prototype.setImage = function (url, x, y) {
var width = canvas.width;
var height = canvas.height;
var img = new Image();
img.src = url;
img.onload = function () {
image = img;
imagePath = url
img.loaded = true
var w = img.width;
var h = img.height;
if (x !== undefined && y !== undefined) {
ctx.drawImage(img, x, y);
} else {
ctx.drawImage(img, 10, 10);
}
valid = false;
_this.fire("setImage", {
state: "success",
msg: "success"
})
}
img.onerror = function (err) {
_this.fire("setImage", {
state: "error",
msg: err
})
}
};
CanvasPlot.prototype.toTop = function (item) {
var plots = plotCaches;
var l = plots.length;
for (var i = l - 1; i >= 0; i--) {
var plot = plots[i];
if (item === plot) {
plots.splice(i, 1)
break
}
};
item.index = l - 1;
plotCaches.push(item)
};
CanvasPlot.prototype.addPlot = function (options) {
var type = options.type || drawingType;
switch (type) {
case "rect":
this.addRect(options)
break;
case "text":
this.addText(options)
break;
default:
this.addRect(options)
break;
}
};
CanvasPlot.prototype.delPlot = function (item) {
if (item === undefined) {
plotCaches = [];
valid = false;
_this.fire("removeAll")
return
}
var plots = plotCaches;
var l = plots.length;
for (var i = l - 1; i >= 0; i--) {
var plot = plots[i];
if (item.uuid === plot.uuid) {
plots.splice(i, 1)
break
}
}
valid = false;
_this.fire("removePlot", item)
};
CanvasPlot.prototype.selectPlot = function (item, flag) {
if (item === undefined) {
plotCaches = [];
valid = false;
_this.fire("removeAll")