diff --git a/views/chart.php b/views/chart.php
index 5ffdeff..9ec7dc7 100644
--- a/views/chart.php
+++ b/views/chart.php
@@ -127,7 +127,11 @@ function renderChart(
$chartData[$item->date] = $item->weightedAverage;
}
- $poloniexChart = new NeatCharts\LineChart($chartData, $themes[$theme]);
+ if ($format == 'svg') {
+ $chartOptions = array_replace($themes[$theme], ['lineColor'=>'@lineColor']);
+ }
+
+ $poloniexChart = new NeatCharts\LineChart($chartData, $chartOptions);
$result = '' . PHP_EOL;
$result .= $poloniexChart->render();
@@ -148,13 +152,26 @@ function renderChart(
}
header('Expires: '.gmdate(DateTime::RFC1123, $resultExpires));
- if ($format == 'svg') {
- header('Content-type: image/svg+xml; charset=utf-8');
- header('Content-Disposition: inline; filename="Dash-chart-' . gmdate('Y-m-d\THis+0', $startTime) . '--' . gmdate('Y-m-d\THis+0') . '.svg"');
- } else if ($format == 'png') {
+ if ($format == 'png') {
header('Content-Type: image/png');
header('Content-Disposition: inline; filename="Dash-chart-' . gmdate('Y-m-d\THis+0', $startTime) . '--' . gmdate('Y-m-d\THis+0') . '.png"');
+ echo $result;
+ } else if ($format == 'svg') {
+ header('Content-type: image/svg+xml; charset=utf-8');
+ header('Content-Disposition: inline; filename="Dash-chart-' . gmdate('Y-m-d\THis+0', $startTime) . '--' . gmdate('Y-m-d\THis+0') . '.svg"');
+
+ if (array_key_exists('lineColor', $_GET)) {
+ $lineColor = htmlspecialchars($_GET['lineColor']);
+ if (1 === preg_match('/^[a-fA-F0-9]{3,6}/', $lineColor)) {
+ //this is an HTML color
+ $lineColor = '#' . $lineColor;
+ }
+ } else {
+ $lineColor = $themes[$theme]['lineColor'];
+ }
+ echo str_replace('@lineColor', $lineColor, $result);
+ } else {
+ return false;
}
- echo $result;
return true;
}
diff --git a/views/index.php b/views/index.php
index a69ba51..1476066 100644
--- a/views/index.php
+++ b/views/index.php
@@ -72,8 +72,8 @@
Transparent SVG and PNG charts with your favorite cryptocurrencies
- 
- 30 Day Dash price in BTC http://cryptohistory.org/charts/dark/dash-btc/30d/svg
+ 
+ 30 Day Dash price in BTC http://cryptohistory.org/charts/dark/dash-btc/30d/svg?lineColor=1C74BC
Sparklines too! ETH 7 days: 
<img src="http://cryptohistory.org/charts/sparkline/eth-btc/7d/svg" alt="ETH 7d chart" style="vertical-align: bottom;">
@@ -86,13 +86,15 @@
Theme: dark, light, or sparkline.
Currency: anything active on Poloniex. Prices are all in bitcoin.
Timespan: 1y, 30d, 7d, or 24h.
- Format: svg (best) or png.
+ Format: svg (best) or png.
+ If you use svg format, you can add ?lineColor= to the end of the URL for a custom plot-line color.
+