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Basic support for canvas only (patch from trac #3503)

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This commit is contained in:
Antoine Abt
2012-01-04 10:59:51 +01:00
parent 485ec033e9
commit 6be48e9ef9
2 changed files with 12 additions and 1 deletions
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2
lib/OpenLayers/Feature/Vector.js
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@@ -419,6 +419,8 @@ OpenLayers.Feature.Vector = OpenLayers.Class(OpenLayers.Feature, {
* labelYOffset - {Number} Pixel offset along the positive y axis for displacing the label. Not supported by the canvas renderer.
* labelSelect - {Boolean} If set to true, labels will be selectable using SelectFeature or similar controls.
* Default is false.
* labelOutlineColor - {String} The color of the label outline. Default is 'white'. Only supported by the canvas renderer.
* labelOutlineWidth - {Number} The width of the label outline. Default is 3, set to 0 or null to disable. Only supported by the canvas renderer.
* fontColor - {String} The font color for the label, to be provided like CSS.
* fontOpacity - {Number} Opacity (0-1) for the label
* fontFamily - {String} The font family for the label, to be provided like in CSS.

11
lib/OpenLayers/Renderer/Canvas.js
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@@ -527,7 +527,9 @@ OpenLayers.Renderer.Canvas = OpenLayers.Class(OpenLayers.Renderer, {
drawText: function(location, style) {
style = OpenLayers.Util.extend({
fontColor: "#000000",
labelAlign: "cm"
labelAlign: "cm",
labelOutlineColor: "white",
labelOutlineWidth: 3
}, style);
var pt = this.getLocalXY(location);
@@ -560,6 +562,13 @@ OpenLayers.Renderer.Canvas = OpenLayers.Class(OpenLayers.Renderer, {
this.canvas.measureText('xx').width;
pt[1] += lineHeight*vfactor*(numRows-1);
for (var i = 0; i < numRows; i++) {
if (style.labelOutlineWidth) {
this.canvas.save();
this.canvas.strokeStyle = style.labelOutlineColor;
this.canvas.lineWidth = style.labelOutlineWidth;
this.canvas.strokeText(labelRows[i], pt[0], pt[1] + (lineHeight*i));
this.canvas.restore();
}
this.canvas.fillText(labelRows[i], pt[0], pt[1] + (lineHeight*i));
}
} else if (this.canvas.mozDrawText) {