148 lines
3.9 KiB
Text
148 lines
3.9 KiB
Text
#-------------------------------------------------------------------------------
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# canvas.Text
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#-------------------------------------------------------------------------------
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# Class for a text element on a canvas
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#
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var font_mapper = func(family = "LiberationSans", weight = "", style = "", custom_mapper=nil)
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{
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if (isfunc(custom_mapper)) {
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var font = custom_mapper(family, weight, style);
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if (font != nil)
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return font;
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}
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if (string.match(family, "Liberation*")) {
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style = style == "italic" ? "Italic" : "";
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weight = weight == "bold" ? "Bold" : "";
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var s = weight~style;
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if (s == "") s = "Regular";
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return "LiberationFonts/"~string.replace(family, " ", "")~"-"~s~".ttf";
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}
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return "LiberationFonts/LiberationMono-Bold.ttf";
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};
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var Text = {
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new: func(ghost) {
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var obj = {
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parents: [Text, Element.new(ghost)],
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};
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return obj;
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},
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# Set the text
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setText: func(text) {
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me.set("text", typeof(text) == "scalar" ? text : "");
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},
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getText: func() {
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return me.get("text");
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},
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# enable reduced property I/O update function
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enableUpdate: func () {
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me._lasttext = "INIT_BLANK";
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me.updateText = func (text)
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{
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if (text == me._lasttext) {return;}
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me._lasttext = text;
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me.set("text", typeof(text) == "scalar" ? text : "");
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};
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},
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# reduced property I/O text update template
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updateText: func (text) {
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die("updateText() requires enableUpdate() to be called first");
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},
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# enable fast setprop-based text writing
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enableFast: func () {
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me._node_path = me._node.getPath()~"/text";
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me.setTextFast = func(text) {
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setprop(me._node_path, text);
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};
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},
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# fast, setprop-based text writing template
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setTextFast: func (text) {
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die("setTextFast() requires enableFast() to be called first");
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},
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# append text to an existing string
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appendText: func(text) {
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me.set("text", (me.get("text") or "")~(typeof(text) == "scalar" ? text : ""));
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},
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# Set alignment
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#
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# @param align String, one of:
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# left-top
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# left-center
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# left-bottom
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# center-top
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# center-center
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# center-bottom
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# right-top
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# right-center
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# right-bottom
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# left-baseline
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# center-baseline
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# right-baseline
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# left-bottom-baseline
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# center-bottom-baseline
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# right-bottom-baseline
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#
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setAlignment: func(align) {
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me.set("alignment", align);
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},
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# Set the font size
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setFontSize: func(size, aspect = 1) {
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me.setDouble("character-size", size);
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me.setDouble("character-aspect-ratio", aspect);
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},
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# Set font (by name of font file)
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setFont: func(name) {
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me.set("font", name);
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},
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# Enumeration of values for drawing mode:
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TEXT: 0x01, # The text itself
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BOUNDINGBOX: 0x02, # A bounding box (only lines)
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FILLEDBOUNDINGBOX: 0x04, # A filled bounding box
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ALIGNMENT: 0x08, # Draw a marker (cross) at the position of the text
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# Set draw mode. Binary combination of the values above. Since I have not
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# found a bitwise "or" we have to use a "+" instead.
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# e.g. my_text.setDrawMode(Text.TEXT + Text.BOUNDINGBOX);
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setDrawMode: func(mode) {
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me.setInt("draw-mode", mode);
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},
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# Set bounding box padding
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setPadding: func(pad) {
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me.setDouble("padding", pad);
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},
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setMaxWidth: func(w) {
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me.setDouble("max-width", w);
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},
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setColor: func {
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me.set("fill", _getColor(arg));
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},
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getColor: func {
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me.get("fill");
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},
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setColorFill: func {
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me.set("background", _getColor(arg));
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},
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getColorFill: func {
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me.get("background");
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},
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};
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