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Move setLayerVisibility() and setLayerOpacity() into Drawing and some tests

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git-svn-id: http://svg-edit.googlecode.com/svn/trunk@1943 eee81c28-f429-11dd-99c0-75d572ba1ddd
This commit is contained in:
Jeff Schiller
2011-01-28 07:39:30 +00:00
parent 4190990d69
commit 00d05776a2
5 changed files with 111 additions and 68 deletions
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51
editor/draw.js
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@@ -385,6 +385,37 @@ svgedit.draw.Drawing.prototype.getLayerVisibility = function(layername) {
return (layer.getAttribute('display') != 'none');
};
// Function: svgedit.draw.Drawing.setLayerVisibility
// Sets the visibility of the layer. If the layer name is not valid, this function return
// false, otherwise it returns true. This is an undo-able action.
//
// Parameters:
// layername - the name of the layer to change the visibility
// bVisible - true/false, whether the layer should be visible
//
// Returns:
// The SVGGElement representing the layer if the layername was valid, otherwise null.
svgedit.draw.Drawing.prototype.setLayerVisibility = function(layername, bVisible) {
if (typeof bVisible != typeof true) {
return null;
}
// find the layer
var layer = null;
for (var i = 0; i < this.getNumLayers(); ++i) {
if (this.getLayerName(i) == layername) {
layer = this.all_layers[i][1];
break;
}
}
if (!layer) return null;
var oldDisplay = layer.getAttribute("display");
if (!oldDisplay) oldDisplay = "inline";
layer.setAttribute("display", bVisible ? "inline" : "none");
return layer;
};
// Function: svgedit.draw.Drawing.getLayerOpacity
// Returns the opacity of the given layer. If the input name is not a layer, null is returned.
//
@@ -408,4 +439,24 @@ svgedit.draw.Drawing.prototype.getLayerOpacity = function(layername) {
return null;
};
// Function: svgedit.draw.Drawing.setLayerOpacity
// Sets the opacity of the given layer. If the input name is not a layer, nothing happens.
// If opacity is not a value between 0.0 and 1.0, then nothing happens.
//
// Parameters:
// layername - name of the layer on which to set the opacity
// opacity - a float value in the range 0.0-1.0
svgedit.draw.Drawing.prototype.setLayerOpacity = function(layername, opacity) {
if (typeof opacity != typeof 1.0 || opacity < 0.0 || opacity > 1.0) {
return;
}
for (var i = 0; i < this.getNumLayers(); ++i) {
if (this.getLayerName(i) == layername) {
var g = this.all_layers[i][1];
g.setAttribute("opacity", opacity);
break;
}
}
};
})();