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Add stroke support for text symbolizers

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This commit is contained in:
Tim Schaub
2013-10-07 16:10:06 -06:00
parent 5e86ffcca5
commit 539ecbdd9c
5 changed files with 94 additions and 3 deletions
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19
src/ol/renderer/canvas/canvasvectorrenderer.js
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@@ -293,6 +293,15 @@ ol.renderer.canvas.Vector.prototype.renderText_ =
context.textAlign = 'center';
context.textBaseline = 'middle';
var stroke = false;
if (goog.isDef(text.strokeColor)) {
stroke = true;
goog.asserts.assertString(text.strokeColor);
context.strokeStyle = text.strokeColor;
goog.asserts.assertNumber(text.strokeWidth);
context.lineWidth = text.strokeWidth;
}
for (var i = 0, ii = features.length; i < ii; ++i) {
feature = features[i];
if (feature.renderIntent === ol.layer.VectorLayerRenderIntent.HIDDEN) {
@@ -303,6 +312,16 @@ ol.renderer.canvas.Vector.prototype.renderText_ =
for (var j = 0, jj = vecs.length; j < jj; ++j) {
vec = vecs[j];
goog.vec.Mat4.multVec3(this.transform_, vec, vec);
if (stroke) {
if (text.strokeOpacity !== text.opacity) {
goog.asserts.assertNumber(text.strokeOpacity);
context.globalAlpha = text.strokeOpacity;
}
context.strokeText(texts[i], vec[0], vec[1]);
if (text.strokeOpacity !== text.opacity) {
context.globalAlpha = text.opacity;
}
}
context.fillText(texts[i], vec[0], vec[1]);
}
}