55 lines
1.5 KiB
Groff
55 lines
1.5 KiB
Groff
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# Canvas backward support for using 3.0 API with FlightGear 2.8
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(func {
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# 2.8 uses multiple properties for representing a color. Also different names
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# are used for the colors and no CSS syntax like #rrggbb are supported.
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var color_components = ["red", "green", "blue", "alpha"];
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var setColorNodes = func(obj, name, color)
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{
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if( size(color) == 1 )
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color = color[0];
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if( typeof(color) != "vector" )
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debug.warn("Wrong type for color");
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else if( size(color) < 3 or size(color) > 4 )
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debug.warn("Color needs 3 or 4 values (RGB or RGBA)");
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else
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{
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var node = obj._node.getNode(name, 1);
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for(var i = 0; i < size(color_components); i += 1)
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node.getNode(color_components[i], 1)
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.setDoubleValue( i < size(color) ? color[i]
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: 1 ); # default alpha is 1
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}
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return obj;
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};
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Element.setColor = func setColorNodes(me, "color", arg);
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Element.setColorFill = func {
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setColorNodes(me, "color-fill", arg);
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me.setBool("fill", 1);
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};
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Path.setColor = Element.setColor;
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Path.setColorFill = Element.setColorFill;
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Text.setColor = Element.setColor;
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Text.setColorFill = Element.setColorFill;
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# 2.8 uses multiple properties instead of a single string property
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Canvas.setStrokeDashArray = func(pattern)
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{
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me._node.removeChildren('stroke-dasharray');
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if( typeof(pattern) == 'vector' )
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me._node.setValues({'stroke-dasharray': pattern});
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else
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debug.warn("setStrokeDashArray: vector expected!");
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return me;
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};
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print("Canvas API: FlightGear 2.8 backward support loaded.");
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})();
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