167 lines
3.2 KiB
Text
167 lines
3.2 KiB
Text
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CLASS:: PopUpMenu
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summary:: A view displaying a text item selectable from a drop-down menu.
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categories:: GUI>Views
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DESCRIPTION::
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When clicked, this view opens a menu containing several text items, then closes the menu and displays one of the items after it is selected.
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CLASSMETHODS::
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PRIVATE:: key
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INSTANCEMETHODS::
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SUBSECTION:: Data
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METHOD:: items
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The list of items displayed in a menu when the view is clicked.
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argument::
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An Array of Strings or Symbols.
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METHOD:: clear
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Removes all items.
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METHOD:: item
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The currently selected item.
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returns::
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A String.
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METHOD:: value
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The index of the currently selected item.
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argument::
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An integer, or nil meaning no selected item.
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METHOD:: valueAction
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Sets link::#-value:: and triggers link::#-action::.
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argument::
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An integer, or nil meaning no selected item.
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SUBSECTION:: Appearance
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METHOD:: stringColor
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The color used to display text.
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argument::
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A Color.
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METHOD:: background
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Setting this variable colors the area of the view under the text with the given color.
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argument::
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A Color.
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SUBSECTION:: Interaction
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METHOD:: allowsReselection
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Determines whether the action is triggered when selecting already selected item. Defaults to false.
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argument::
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A Boolean.
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SUBSECTION:: Actions
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METHOD:: action
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The action object evaluated whenever the user changes the selected item from the menu. See link::#-allowsReselection:: for customization.
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SUBSECTION:: Drag and drop
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METHOD:: defaultGetDrag
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returns::
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The link::#-value::.
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METHOD:: defaultCanReceiveDrag
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returns::
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True if the current drag data is a number.
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METHOD:: defaultReceiveDrag
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Sets link::#-valueAction:: to the current drag data.
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EXAMPLES::
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subsection:: Basic Example
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code::
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(
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w = Window.new("The Eightfold Path").front;
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m = PopUpMenu(w, Rect(10, 10, 180, 20));
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m.items = [
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"right view", "right thinking", "right mindfulness", "right speech",
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"right action", "right diligence", "right concentration", "right livelihood"
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];
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m.background_(Color.green(0.7)); // only changes the look of displayed item
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m.stringColor_(Color.white); // only changes the look of displayed item
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m.font_(Font("Courier", 13)); // only changes the look of displayed item
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m.action = { arg menu;
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[menu.value, menu.item].postln;
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};
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)
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m.value; // returns the index of the current item;
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m.item; // returns the String or Symbol of the current item
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m.value_(2); // changes the displayed item, but does not evaluate the action
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m.valueAction_(3); // evaluates the action.
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::
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subsection:: Sound Example
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Play different functions:
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code::
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(
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s.waitForBoot({
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var w, menu, snd, funcs, b;
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w = Window.new.front;
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menu = PopUpMenu(w, Rect(10, 10, 90, 20))
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.items_(["Sine", "Saw" , "Noise" , "Pulse"]);
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funcs = [
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{ SinOsc.ar(440, 0, 0.3) },
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{ Saw.ar(440, 0.3) },
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{ WhiteNoise.ar(0.3) },
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{ Pulse.ar(440, 0.2, 0.3) }
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];
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b = Button(w, Rect(110, 10, 180, 20))
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.states_([["play", Color.black, Color.green]])
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.mouseDownAction_({
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snd = funcs.at(menu.value).play;
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})
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.action_({ arg butt, mod;
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snd.release;
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});
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w.front;
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p = CmdPeriod.add({ b.value_(0) }); // set button to 0 on hitting Cmd-period
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w.onClose_{ snd.release; CmdPeriod.removeAll }; // clean up when window is closed
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})
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)
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::
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