extjs-gpl
Version:
GPL licensed version of Sencha Ext JS
297 lines (264 loc) • 10.8 kB
JavaScript
/**
* @class Ext.chart.series.sprite.Bar
* @extends Ext.chart.series.sprite.StackedCartesian
*
* Draws a sprite used in the bar series.
*/
Ext.define('Ext.chart.series.sprite.Bar', {
alias: 'sprite.barSeries',
extend: 'Ext.chart.series.sprite.StackedCartesian',
inheritableStatics: {
def: {
processors: {
/**
* @cfg {Number} [minBarWidth=2] The minimum bar width.
*/
minBarWidth: 'number',
/**
* @cfg {Number} [maxBarWidth=100] The maximum bar width.
*/
maxBarWidth: 'number',
/**
* @cfg {Number} [minGapWidth=5] The minimum gap between bars.
*/
minGapWidth: 'number',
/**
* @cfg {Number} [radius=0] The degree of rounding for rounded bars.
*/
radius: 'number',
/**
* @cfg {Number} [inGroupGapWidth=3] The gap between grouped bars.
*/
inGroupGapWidth: 'number'
},
defaults: {
minBarWidth: 2,
maxBarWidth: 100,
minGapWidth: 5,
inGroupGapWidth: 3,
radius: 0
}
}
},
drawLabel: function (text, dataX, dataStartY, dataY, labelId) {
var me = this,
attr = me.attr,
label = me.getMarker('labels'),
labelTpl = label.getTemplate(),
labelCfg = me.labelCfg || (me.labelCfg = {}),
surfaceMatrix = me.surfaceMatrix,
labelOverflowPadding = attr.labelOverflowPadding,
labelDisplay = labelTpl.attr.display,
labelOrientation = labelTpl.attr.orientation,
isVerticalText = (labelOrientation === 'horizontal' && attr.flipXY) ||
(labelOrientation === 'vertical' && !attr.flipXY) ||
!labelOrientation,
calloutLine = labelTpl.getCalloutLine(),
labelY, halfText, labelBBox, calloutLineLength,
changes, hasPendingChanges, params;
// The coordinates below (data point converted to surface coordinates)
// are just for the renderer to give it a notion of where the label will be positioned.
// The actual position of the label will be different
// (unless the renderer returns x/y coordinates in the changes object)
// and depend on several things including the size of the text,
// which has to be measured after the renderer call,
// since text can be modified by the renderer.
labelCfg.x = surfaceMatrix.x(dataX, dataY);
labelCfg.y = surfaceMatrix.y(dataX, dataY);
if (calloutLine) {
calloutLineLength = calloutLine.length;
} else {
calloutLineLength = 0;
}
// Set defaults
if (!attr.flipXY) {
labelCfg.rotationRads = -Math.PI * 0.5;
} else {
labelCfg.rotationRads = 0;
}
labelCfg.calloutVertical = !attr.flipXY;
// Check if we have a specific orientation specified, if so, set
// the appropriate values.
switch (labelOrientation) {
case 'horizontal':
labelCfg.rotationRads = 0;
labelCfg.calloutVertical = false;
break;
case 'vertical':
labelCfg.rotationRads = -Math.PI * 0.5;
labelCfg.calloutVertical = true;
break;
}
labelCfg.text = text;
if (labelTpl.attr.renderer) {
params = [text, label, labelCfg, {store: me.getStore()}, labelId];
changes = Ext.callback(labelTpl.attr.renderer, null, params, 0, me.getSeries());
if (typeof changes === 'string') {
labelCfg.text = changes;
} else if (typeof changes === 'object') {
if ('text' in changes) {
labelCfg.text = changes.text;
}
hasPendingChanges = true;
}
}
labelBBox = me.getMarkerBBox('labels', labelId, true);
if (!labelBBox) {
me.putMarker('labels', labelCfg, labelId);
labelBBox = me.getMarkerBBox('labels', labelId, true);
}
if (calloutLineLength > 0) {
halfText = calloutLineLength;
} else if (calloutLineLength === 0) {
halfText = (isVerticalText ? labelBBox.width : labelBBox.height) / 2;
} else {
halfText = (isVerticalText ? labelBBox.width : labelBBox.height) / 2 + labelOverflowPadding;
}
if (dataStartY > dataY) {
halfText = -halfText;
}
if (isVerticalText) {
labelY = (labelDisplay === 'insideStart') ?
dataStartY + halfText :
dataY - halfText;
} else {
labelY = (labelDisplay === 'insideStart') ?
dataStartY + labelOverflowPadding * 2 :
dataY - labelOverflowPadding * 2;
}
labelCfg.x = surfaceMatrix.x(dataX, labelY);
labelCfg.y = surfaceMatrix.y(dataX, labelY);
labelY = (labelDisplay === 'insideStart') ? dataStartY : dataY;
labelCfg.calloutStartX = surfaceMatrix.x(dataX, labelY);
labelCfg.calloutStartY = surfaceMatrix.y(dataX, labelY);
labelY = (labelDisplay === 'insideStart') ? dataStartY - halfText : dataY + halfText;
labelCfg.calloutPlaceX = surfaceMatrix.x(dataX, labelY);
labelCfg.calloutPlaceY = surfaceMatrix.y(dataX, labelY);
labelCfg.calloutColor = (calloutLine && calloutLine.color) || me.attr.fillStyle;
if (calloutLine) {
if (calloutLine.width) {
labelCfg.calloutWidth = calloutLine.width;
}
} else {
labelCfg.calloutColor = 'none';
}
if (dataStartY > dataY) {
halfText = -halfText;
}
if (Math.abs(dataY - dataStartY) <= halfText * 2 || labelDisplay === 'outside') {
labelCfg.callout = 1;
} else {
labelCfg.callout = 0;
}
if (hasPendingChanges) {
Ext.apply(labelCfg, changes);
}
me.putMarker('labels', labelCfg, labelId);
},
drawBar: function (ctx, surface, rect, left, top, right, bottom, index) {
var me = this,
itemCfg = {},
renderer = me.attr.renderer,
changes;
itemCfg.x = left;
itemCfg.y = top;
itemCfg.width = right - left;
itemCfg.height = bottom - top;
itemCfg.radius = me.attr.radius;
if (renderer) {
changes = Ext.callback(renderer, null,
[me, itemCfg, {store: me.getStore()}, index], 0, me.getSeries());
Ext.apply(itemCfg, changes);
}
me.putMarker('items', itemCfg, index, !renderer);
},
/**
* @inheritdoc
*/
renderClipped: function (surface, ctx, rect) {
if (this.cleanRedraw) {
return;
}
var me = this,
attr = me.attr,
dataX = attr.dataX,
dataY = attr.dataY,
dataText = attr.labels,
dataStartY = attr.dataStartY,
groupCount = attr.groupCount,
groupOffset = attr.groupOffset - (groupCount - 1) * 0.5,
inGroupGapWidth = attr.inGroupGapWidth,
lineWidth = ctx.lineWidth,
matrix = attr.matrix,
xx = matrix.elements[0],
yy = matrix.elements[3],
dx = matrix.elements[4],
dy = surface.roundPixel(matrix.elements[5]) - 1,
maxBarWidth = (xx < 0 ? -1 : 1) * xx - attr.minGapWidth,
minBarWidth = ( Math.min(maxBarWidth, attr.maxBarWidth) - inGroupGapWidth * (groupCount - 1) ) / groupCount,
barWidth = surface.roundPixel( Math.max(attr.minBarWidth, minBarWidth) ),
surfaceMatrix = me.surfaceMatrix,
left, right, bottom, top, i, center,
halfLineWidth = 0.5 * attr.lineWidth,
min = Math.min(rect[0], rect[2]),
max = Math.max(rect[0], rect[2]),
start = Math.max(0, Math.floor(min)),
end = Math.min(dataX.length - 1, Math.ceil(max)),
isDrawLabels = dataText && me.getMarker('labels'),
yLow, yHi;
for (i = start; i <= end; i++) {
yLow = dataStartY ? dataStartY[i] : 0;
yHi = dataY[i];
center = dataX[i] * xx + dx + groupOffset * (barWidth + inGroupGapWidth);
left = surface.roundPixel(center - barWidth / 2) + halfLineWidth;
top = surface.roundPixel(yHi * yy + dy + lineWidth);
right = surface.roundPixel(center + barWidth / 2) - halfLineWidth;
bottom = surface.roundPixel(yLow * yy + dy + lineWidth);
me.drawBar(ctx, surface, rect, left, top - halfLineWidth, right, bottom - halfLineWidth, i);
// We want 0 values to be passed to the renderer
if (isDrawLabels && dataText[i] != null) {
me.drawLabel(dataText[i], center, bottom, top, i);
}
me.putMarker('markers', {
translationX: surfaceMatrix.x(center, top),
translationY: surfaceMatrix.y(center, top)
}, i, true);
}
},
/**
* @inheritdoc
*/
getIndexNearPoint: function (x, y) {
var sprite = this,
attr = sprite.attr,
dataX = attr.dataX,
surface = sprite.getSurface(),
surfaceRect = surface.getRect() || [0,0,0,0],
surfaceHeight = surfaceRect[3],
hitX, hitY,
i, bbox,
index = -1;
// The "items" sprites that draw the bars work in a reverse vertical coordinate system
// starting with 0 at the bottom and increasing the Y coordinate toward the top.
// See also Ext.chart.series.Bar.getItemForPoint(x,y) regarding the chart's innerPadding.
if (attr.flipXY) {
hitX = surfaceHeight - y;
if (surface.getInherited().rtl) {
hitY = surfaceRect[2] - x;
} else {
hitY = x;
}
} else {
hitX = x;
hitY = surfaceHeight - y;
}
for (i = 0; i < dataX.length; i++) {
bbox = sprite.getMarkerBBox('items', i);
if (Ext.draw.Draw.isPointInBBox(hitX, hitY, bbox)) {
index = i;
break;
}
}
return index;
}
});