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Add support for watermarks (close #130)

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This commit is contained in:
Petr Sloup
2017-03-15 17:06:26 +01:00
parent 49a8562441
commit 640038a115
2 changed files with 22 additions and 0 deletions
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15
src/serve_rendered.js
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@@ -50,6 +50,8 @@ module.exports = function(options, repo, params, id, dataResolver) {
var rootPath = options.paths.root;
var watermark = params.watermark || options.watermark;
var styleFile = params.style;
var map = {
renderers: [],
@@ -357,6 +359,19 @@ module.exports = function(options, repo, params, id, dataResolver) {
if (opt_overlay) {
image.overlayWith(opt_overlay);
}
if (watermark) {
var canvas = new Canvas(scale * width, scale * height);
var ctx = canvas.getContext('2d');
ctx.scale(scale, scale);
ctx.font = '10px sans-serif';
ctx.strokeWidth = '1px';
ctx.strokeStyle = 'rgba(255,255,255,.4)';
ctx.strokeText(watermark, 5, height - 5);
ctx.fillStyle = 'rgba(0,0,0,.4)';
ctx.fillText(watermark, 5, height - 5);
image.overlayWith(canvas.toBuffer());
}
var formatQuality = (params.formatQuality || {})[format] ||
(options.formatQuality || {})[format];