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Button.as
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126 lines (113 loc) · 4.08 KB
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/*
* Scratch Project Editor and Player
* Copyright (C) 2014 Massachusetts Institute of Technology
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package uiwidgets {
import flash.display.*;
import flash.events.MouseEvent;
import flash.geom.Matrix;
import flash.text.*;
public class Button extends Sprite {
private var labelOrIcon:DisplayObject;
private var color:* = CSS.titleBarColors;
private var minWidth:int = 50;
private var compact:Boolean;
private var action:Function;
private var tipName:String;
public function Button(label:String, action:Function = null, compact:Boolean = false, tipName:String = null) {
this.action = action;
this.compact = compact;
this.tipName = tipName;
addLabel(label);
mouseChildren = false;
addEventListener(MouseEvent.MOUSE_OVER, mouseOver);
addEventListener(MouseEvent.MOUSE_OUT, mouseOut);
addEventListener(MouseEvent.MOUSE_DOWN, mouseDown);
addEventListener(MouseEvent.MOUSE_UP, mouseUp);
setColor(CSS.titleBarColors);
}
public function setLabel(s:String):void {
if (labelOrIcon is TextField) {
TextField(labelOrIcon).text = s;
setMinWidthHeight(0, 0);
} else {
if ((labelOrIcon != null) && (labelOrIcon.parent != null)) labelOrIcon.parent.removeChild(labelOrIcon);
addLabel(s);
}
}
public function setIcon(icon:DisplayObject):void {
if ((labelOrIcon != null) && (labelOrIcon.parent != null)) {
labelOrIcon.parent.removeChild(labelOrIcon);
}
labelOrIcon = icon;
if (icon != null) addChild(labelOrIcon);
setMinWidthHeight(0, 0);
}
public function setMinWidthHeight(minW:int, minH:int):void {
if (labelOrIcon != null) {
if (labelOrIcon is TextField) {
minW = Math.max(minWidth, labelOrIcon.width + 11);
minH = compact ? 20 : 25;
} else {
minW = Math.max(minWidth, labelOrIcon.width + 12);
minH = Math.max(minH, labelOrIcon.height + 11);
}
labelOrIcon.x = ((minW - labelOrIcon.width) / 2);
labelOrIcon.y = ((minH - labelOrIcon.height) / 2);
}
// outline
graphics.clear();
graphics.lineStyle(0.5, CSS.borderColor, 1, true);
if (color is Array) {
var matr:Matrix = new Matrix();
matr.createGradientBox(minW, minH, Math.PI / 2, 0, 0);
graphics.beginGradientFill(GradientType.LINEAR, CSS.titleBarColors , [100, 100], [0x00, 0xFF], matr);
}
else graphics.beginFill(color);
graphics.drawRoundRect(0, 0, minW, minH, 12);
graphics.endFill();
}
private function mouseOver(evt:MouseEvent):void { setColor(CSS.overColor) }
private function mouseOut(evt:MouseEvent):void { setColor(CSS.titleBarColors) }
private function mouseDown(evt:MouseEvent):void { Menu.removeMenusFrom(stage) }
private function mouseUp(evt:MouseEvent):void {
if (action != null) action();
evt.stopImmediatePropagation();
}
public function handleTool(tool:String, evt:MouseEvent):void {
if (tool == 'help' && tipName) Scratch.app.showTip(tipName);
}
private function setColor(c:*):void {
color = c;
if (labelOrIcon is TextField) {
(labelOrIcon as TextField).textColor = (c == CSS.overColor) ? CSS.white : CSS.buttonLabelColor;
}
setMinWidthHeight(5, 5);
}
private function addLabel(s:String):void {
var label:TextField = new TextField();
label.autoSize = TextFieldAutoSize.LEFT;
label.selectable = false;
label.background = false;
label.defaultTextFormat = CSS.normalTextFormat;
label.textColor = CSS.buttonLabelColor;
label.text = s;
labelOrIcon = label;
setMinWidthHeight(0, 0);
addChild(label);
}
}}