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label placement adjustments

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Joshua Seigler 2016-06-28 21:56:39 -04:00
parent 481dd6747b
commit 57f007f71f
2 changed files with 10 additions and 7 deletions
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14
SVGChartBuilder.php
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@ -193,8 +193,8 @@ class SVGChartBuilder {
// Top and bottom grid labels
$gridText =
'<text x="'.(0.4 * $this->options['fontSize']).'" y="'.($this->options['fontSize'] / 2).'">'.($this->labelFormat($this->yMax, $labelPrecision + 1)).'</text>' .
'<text x="'.(0.4 * $this->options['fontSize']).'" y="'.($this->options['fontSize'] / 2 + $this->height).'">'.($this->labelFormat($this->yMin, $labelPrecision + 1)).'</text>';
'<text x="'.(0.4 * $this->options['fontSize']).'" y="'.($this->options['fontSize'] * 0.4).'">'.($this->labelFormat($this->yMax, $labelPrecision + 1)).'</text>' .
'<text x="'.(0.4 * $this->options['fontSize']).'" y="'.($this->options['fontSize'] * 0.4 + $this->height).'">'.($this->labelFormat($this->yMin, $labelPrecision + 1)).'</text>';
// Main labels and grid lines
for (
@ -204,14 +204,14 @@ class SVGChartBuilder {
) {
$labelHeight = $this->transformY($labelY);
if ( // label is not too close to the min or max
$labelHeight < $this->height - 2.5 * $this->options['fontSize'] &&
$labelHeight > $this->options['fontSize'] * 2.5
$labelHeight < $this->height - 1.5 * $this->options['fontSize'] &&
$labelHeight > $this->options['fontSize'] * 1.5
) {
$gridText .= '<text x="-'.(0.25 * $this->options['fontSize']).'" y="'.($labelHeight + $this->options['fontSize'] / 2).'">'.$this->labelFormat($labelY, $labelPrecision).'</text>';
$gridText .= '<text x="-'.(0.25 * $this->options['fontSize']).'" y="'.($labelHeight + $this->options['fontSize'] * 0.4).'">'.$this->labelFormat($labelY, $labelPrecision).'</text>';
$gridLines .= ' M0,'.$labelHeight.' '.$this->width.','.$labelHeight;
} else if ( // label is too close
$labelHeight < $this->height - $this->options['fontSize'] / 2 &&
$labelHeight > $this->options['fontSize'] / 2
$labelHeight < $this->height - $this->options['fontSize'] * 0.75 &&
$labelHeight > $this->options['fontSize'] * 0.75
) {
$gridLines .= ' M'.( // move grid line over when it's very close to the min or max label
$labelHeight < $this->height - $this->options['fontSize'] / 2 && $labelHeight > $this->options['fontSize'] / 2 ? 0 : $this->options['fontSize'] / 2

3
demo.php
View file

@ -21,6 +21,9 @@
</head>
<body>
<header>
<h1>PHP SVG Chart Builder: chart demos</h1>
</header>
<main>
<section>
<h2>Poloniex Dash/BTC Price</h2>