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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("../../util/graphic");
var textContain = require("zrender/lib/contain/text");
var formatUtil = require("../../util/format");
var matrix = require("zrender/lib/core/matrix");
var axisHelper = require("../../coord/axisHelper");
var AxisBuilder = require("../axis/AxisBuilder");
/*
* 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.
*/
/**
* @param {module:echarts/model/Model} axisPointerModel
*/
function buildElStyle(axisPointerModel) {
var axisPointerType = axisPointerModel.get('type');
var styleModel = axisPointerModel.getModel(axisPointerType + 'Style');
var style;
if (axisPointerType === 'line') {
style = styleModel.getLineStyle();
style.fill = null;
} else if (axisPointerType === 'shadow') {
style = styleModel.getAreaStyle();
style.stroke = null;
}
return style;
}
/**
* @param {Function} labelPos {align, verticalAlign, position}
*/
function buildLabelElOption(elOption, axisModel, axisPointerModel, api, labelPos) {
var value = axisPointerModel.get('value');
var text = getValueLabel(value, axisModel.axis, axisModel.ecModel, axisPointerModel.get('seriesDataIndices'), {
precision: axisPointerModel.get('label.precision'),
formatter: axisPointerModel.get('label.formatter')
});
var labelModel = axisPointerModel.getModel('label');
var paddings = formatUtil.normalizeCssArray(labelModel.get('padding') || 0);
var font = labelModel.getFont();
var textRect = textContain.getBoundingRect(text, font);
var position = labelPos.position;
var width = textRect.width + paddings[1] + paddings[3];
var height = textRect.height + paddings[0] + paddings[2]; // Adjust by align.
var align = labelPos.align;
align === 'right' && (position[0] -= width);
align === 'center' && (position[0] -= width / 2);
var verticalAlign = labelPos.verticalAlign;
verticalAlign === 'bottom' && (position[1] -= height);
verticalAlign === 'middle' && (position[1] -= height / 2); // Not overflow ec container
confineInContainer(position, width, height, api);
var bgColor = labelModel.get('backgroundColor');
if (!bgColor || bgColor === 'auto') {
bgColor = axisModel.get('axisLine.lineStyle.color');
}
elOption.label = {
shape: {
x: 0,
y: 0,
width: width,
height: height,
r: labelModel.get('borderRadius')
},
position: position.slice(),
// TODO: rich
style: {
text: text,
textFont: font,
textFill: labelModel.getTextColor(),
textPosition: 'inside',
textPadding: paddings,
fill: bgColor,
stroke: labelModel.get('borderColor') || 'transparent',
lineWidth: labelModel.get('borderWidth') || 0,
shadowBlur: labelModel.get('shadowBlur'),
shadowColor: labelModel.get('shadowColor'),
shadowOffsetX: labelModel.get('shadowOffsetX'),
shadowOffsetY: labelModel.get('shadowOffsetY')
},
// Lable should be over axisPointer.
z2: 10
};
} // Do not overflow ec container
function confineInContainer(position, width, height, api) {
var viewWidth = api.getWidth();
var viewHeight = api.getHeight();
position[0] = Math.min(position[0] + width, viewWidth) - width;
position[1] = Math.min(position[1] + height, viewHeight) - height;
position[0] = Math.max(position[0], 0);
position[1] = Math.max(position[1], 0);
}
/**
* @param {number} value
* @param {module:echarts/coord/Axis} axis
* @param {module:echarts/model/Global} ecModel
* @param {Object} opt
* @param {Array.<Object>} seriesDataIndices
* @param {number|string} opt.precision 'auto' or a number
* @param {string|Function} opt.formatter label formatter
*/
function getValueLabel(value, axis, ecModel, seriesDataIndices, opt) {
value = axis.scale.parse(value);
var text = axis.scale.getLabel( // If `precision` is set, width can be fixed (like '12.00500'), which
// helps to debounce when when moving label.
value, {
precision: opt.precision
});
var formatter = opt.formatter;
if (formatter) {
var params = {
value: axisHelper.getAxisRawValue(axis, value),
axisDimension: axis.dim,
axisIndex: axis.index,
seriesData: []
};
zrUtil.each(seriesDataIndices, function (idxItem) {
var series = ecModel.getSeriesByIndex(idxItem.seriesIndex);
var dataIndex = idxItem.dataIndexInside;
var dataParams = series && series.getDataParams(dataIndex);
dataParams && params.seriesData.push(dataParams);
});
if (zrUtil.isString(formatter)) {
text = formatter.replace('{value}', text);
} else if (zrUtil.isFunction(formatter)) {
text = formatter(params);
}
}
return text;
}
/**
* @param {module:echarts/coord/Axis} axis
* @param {number} value
* @param {Object} layoutInfo {
* rotation, position, labelOffset, labelDirection, labelMargin
* }
*/
function getTransformedPosition(axis, value, layoutInfo) {
var transform = matrix.create();
matrix.rotate(transform, transform, layoutInfo.rotation);
matrix.translate(transform, transform, layoutInfo.position);
return graphic.applyTransform([axis.dataToCoord(value), (layoutInfo.labelOffset || 0) + (layoutInfo.labelDirection || 1) * (layoutInfo.labelMargin || 0)], transform);
}
function buildCartesianSingleLabelElOption(value, elOption, layoutInfo, axisModel, axisPointerModel, api) {
var textLayout = AxisBuilder.innerTextLayout(layoutInfo.rotation, 0, layoutInfo.labelDirection);
layoutInfo.labelMargin = axisPointerModel.get('label.margin');
buildLabelElOption(elOption, axisModel, axisPointerModel, api, {
position: getTransformedPosition(axisModel.axis, value, layoutInfo),
align: textLayout.textAlign,
verticalAlign: textLayout.textVerticalAlign
});
}
/**
* @param {Array.<number>} p1
* @param {Array.<number>} p2
* @param {number} [xDimIndex=0] or 1
*/
function makeLineShape(p1, p2, xDimIndex) {
xDimIndex = xDimIndex || 0;
return {
x1: p1[xDimIndex],
y1: p1[1 - xDimIndex],
x2: p2[xDimIndex],
y2: p2[1 - xDimIndex]
};
}
/**
* @param {Array.<number>} xy
* @param {Array.<number>} wh
* @param {number} [xDimIndex=0] or 1
*/
function makeRectShape(xy, wh, xDimIndex) {
xDimIndex = xDimIndex || 0;
return {
x: xy[xDimIndex],
y: xy[1 - xDimIndex],
width: wh[xDimIndex],
height: wh[1 - xDimIndex]
};
}
function makeSectorShape(cx, cy, r0, r, startAngle, endAngle) {
return {
cx: cx,
cy: cy,
r0: r0,
r: r,
startAngle: startAngle,
endAngle: endAngle,
clockwise: true
};
}
exports.buildElStyle = buildElStyle;
exports.buildLabelElOption = buildLabelElOption;
exports.getValueLabel = getValueLabel;
exports.getTransformedPosition = getTransformedPosition;
exports.buildCartesianSingleLabelElOption = buildCartesianSingleLabelElOption;
exports.makeLineShape = makeLineShape;
exports.makeRectShape = makeRectShape;
exports.makeSectorShape = makeSectorShape;