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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
var zrUtil = require("zrender/lib/core/util");
var graphic = require("./graphic");
var BoundingRect = require("zrender/lib/core/BoundingRect");
var _text = require("zrender/lib/contain/text");
var calculateTextPosition = _text.calculateTextPosition;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
// Symbol factory
/**
* Triangle shape
* @inner
*/
var Triangle = graphic.extendShape({
type: 'triangle',
shape: {
cx: 0,
cy: 0,
width: 0,
height: 0
},
buildPath: function (path, shape) {
var cx = shape.cx;
var cy = shape.cy;
var width = shape.width / 2;
var height = shape.height / 2;
path.moveTo(cx, cy - height);
path.lineTo(cx + width, cy + height);
path.lineTo(cx - width, cy + height);
path.closePath();
}
});
/**
* Diamond shape
* @inner
*/
var Diamond = graphic.extendShape({
type: 'diamond',
shape: {
cx: 0,
cy: 0,
width: 0,
height: 0
},
buildPath: function (path, shape) {
var cx = shape.cx;
var cy = shape.cy;
var width = shape.width / 2;
var height = shape.height / 2;
path.moveTo(cx, cy - height);
path.lineTo(cx + width, cy);
path.lineTo(cx, cy + height);
path.lineTo(cx - width, cy);
path.closePath();
}
});
/**
* Pin shape
* @inner
*/
var Pin = graphic.extendShape({
type: 'pin',
shape: {
// x, y on the cusp
x: 0,
y: 0,
width: 0,
height: 0
},
buildPath: function (path, shape) {
var x = shape.x;
var y = shape.y;
var w = shape.width / 5 * 3; // Height must be larger than width
var h = Math.max(w, shape.height);
var r = w / 2; // Dist on y with tangent point and circle center
var dy = r * r / (h - r);
var cy = y - h + r + dy;
var angle = Math.asin(dy / r); // Dist on x with tangent point and circle center
var dx = Math.cos(angle) * r;
var tanX = Math.sin(angle);
var tanY = Math.cos(angle);
var cpLen = r * 0.6;
var cpLen2 = r * 0.7;
path.moveTo(x - dx, cy + dy);
path.arc(x, cy, r, Math.PI - angle, Math.PI * 2 + angle);
path.bezierCurveTo(x + dx - tanX * cpLen, cy + dy + tanY * cpLen, x, y - cpLen2, x, y);
path.bezierCurveTo(x, y - cpLen2, x - dx + tanX * cpLen, cy + dy + tanY * cpLen, x - dx, cy + dy);
path.closePath();
}
});
/**
* Arrow shape
* @inner
*/
var Arrow = graphic.extendShape({
type: 'arrow',
shape: {
x: 0,
y: 0,
width: 0,
height: 0
},
buildPath: function (ctx, shape) {
var height = shape.height;
var width = shape.width;
var x = shape.x;
var y = shape.y;
var dx = width / 3 * 2;
ctx.moveTo(x, y);
ctx.lineTo(x + dx, y + height);
ctx.lineTo(x, y + height / 4 * 3);
ctx.lineTo(x - dx, y + height);
ctx.lineTo(x, y);
ctx.closePath();
}
});
/**
* Map of path contructors
* @type {Object.<string, module:zrender/graphic/Path>}
*/
var symbolCtors = {
line: graphic.Line,
rect: graphic.Rect,
roundRect: graphic.Rect,
square: graphic.Rect,
circle: graphic.Circle,
diamond: Diamond,
pin: Pin,
arrow: Arrow,
triangle: Triangle
};
var symbolShapeMakers = {
line: function (x, y, w, h, shape) {
// FIXME
shape.x1 = x;
shape.y1 = y + h / 2;
shape.x2 = x + w;
shape.y2 = y + h / 2;
},
rect: function (x, y, w, h, shape) {
shape.x = x;
shape.y = y;
shape.width = w;
shape.height = h;
},
roundRect: function (x, y, w, h, shape) {
shape.x = x;
shape.y = y;
shape.width = w;
shape.height = h;
shape.r = Math.min(w, h) / 4;
},
square: function (x, y, w, h, shape) {
var size = Math.min(w, h);
shape.x = x;
shape.y = y;
shape.width = size;
shape.height = size;
},
circle: function (x, y, w, h, shape) {
// Put circle in the center of square
shape.cx = x + w / 2;
shape.cy = y + h / 2;
shape.r = Math.min(w, h) / 2;
},
diamond: function (x, y, w, h, shape) {
shape.cx = x + w / 2;
shape.cy = y + h / 2;
shape.width = w;
shape.height = h;
},
pin: function (x, y, w, h, shape) {
shape.x = x + w / 2;
shape.y = y + h / 2;
shape.width = w;
shape.height = h;
},
arrow: function (x, y, w, h, shape) {
shape.x = x + w / 2;
shape.y = y + h / 2;
shape.width = w;
shape.height = h;
},
triangle: function (x, y, w, h, shape) {
shape.cx = x + w / 2;
shape.cy = y + h / 2;
shape.width = w;
shape.height = h;
}
};
var symbolBuildProxies = {};
zrUtil.each(symbolCtors, function (Ctor, name) {
symbolBuildProxies[name] = new Ctor();
});
var SymbolClz = graphic.extendShape({
type: 'symbol',
shape: {
symbolType: '',
x: 0,
y: 0,
width: 0,
height: 0
},
calculateTextPosition: function (out, style, rect) {
var res = calculateTextPosition(out, style, rect);
var shape = this.shape;
if (shape && shape.symbolType === 'pin' && style.textPosition === 'inside') {
res.y = rect.y + rect.height * 0.4;
}
return res;
},
buildPath: function (ctx, shape, inBundle) {
var symbolType = shape.symbolType;
if (symbolType !== 'none') {
var proxySymbol = symbolBuildProxies[symbolType];
if (!proxySymbol) {
// Default rect
symbolType = 'rect';
proxySymbol = symbolBuildProxies[symbolType];
}
symbolShapeMakers[symbolType](shape.x, shape.y, shape.width, shape.height, proxySymbol.shape);
proxySymbol.buildPath(ctx, proxySymbol.shape, inBundle);
}
}
}); // Provide setColor helper method to avoid determine if set the fill or stroke outside
function symbolPathSetColor(color, innerColor) {
if (this.type !== 'image') {
var symbolStyle = this.style;
var symbolShape = this.shape;
if (symbolShape && symbolShape.symbolType === 'line') {
symbolStyle.stroke = color;
} else if (this.__isEmptyBrush) {
symbolStyle.stroke = color;
symbolStyle.fill = innerColor || '#fff';
} else {
// FIXME 判断图形默认是填充还是描边，使用 onlyStroke ?
symbolStyle.fill && (symbolStyle.fill = color);
symbolStyle.stroke && (symbolStyle.stroke = color);
}
this.dirty(false);
}
}
/**
* Create a symbol element with given symbol configuration: shape, x, y, width, height, color
* @param {string} symbolType
* @param {number} x
* @param {number} y
* @param {number} w
* @param {number} h
* @param {string} color
* @param {boolean} [keepAspect=false] whether to keep the ratio of w/h,
* for path and image only.
*/
function createSymbol(symbolType, x, y, w, h, color, keepAspect) {
// TODO Support image object, DynamicImage.
var isEmpty = symbolType.indexOf('empty') === 0;
if (isEmpty) {
symbolType = symbolType.substr(5, 1).toLowerCase() + symbolType.substr(6);
}
var symbolPath;
if (symbolType.indexOf('image://') === 0) {
symbolPath = graphic.makeImage(symbolType.slice(8), new BoundingRect(x, y, w, h), keepAspect ? 'center' : 'cover');
} else if (symbolType.indexOf('path://') === 0) {
symbolPath = graphic.makePath(symbolType.slice(7), {}, new BoundingRect(x, y, w, h), keepAspect ? 'center' : 'cover');
} else {
symbolPath = new SymbolClz({
shape: {
symbolType: symbolType,
x: x,
y: y,
width: w,
height: h
}
});
}
symbolPath.__isEmptyBrush = isEmpty;
symbolPath.setColor = symbolPathSetColor;
symbolPath.setColor(color);
return symbolPath;
}
exports.createSymbol = createSymbol;