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Special purpose faster canvas text setting methods

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This commit is contained in:
Thorsten Renk 2017-03-19 16:23:35 +02:00
parent 1cdf27fffd
commit 1fad428a27
1 changed files with 33 additions and 0 deletions
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33
Nasal/canvas/api.nas
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@ -610,6 +610,39 @@ var Text = {
{
me.set("text", typeof(text) == 'scalar' ? text : "");
},
# enable reduced property I/O update function
enableUpdate: func ()
{
me._lasttext = "INIT_BLANK";
me.updateText = func (text)
{
if (text == me._lasttext) {return;}
me._lasttext = text;
me.set("text", typeof(text) == 'scalar' ? text : "");
};
},
# reduced property I/O text update template
updateText: func (text)
{
die("updateText() requires enableUpdate() to be called first");
},
# enable fast setprop-based text writing
enableFast: func ()
{
me._node_path = me._node.getPath()~"/text";
me.setTextFast = func(text)
{
setprop(me._node_path, text);
};
},
# fast, setprop-based text writing template
setTextFast: func (text)
{
die("setTextFast() requires enableFast() to be called first");
},
# append text to an existing string
appendText: func(text)
{
me.set("text", (me.get("text") or "") ~ (typeof(text) == 'scalar' ? text : ""));