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/* Title: Pure/System/gui.scala
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Author: Makarius
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Elementary GUI tools.
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*/
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package isabelle
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import java.awt.{Image, Component, Toolkit}
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import javax.swing.{ImageIcon, JOptionPane, UIManager}
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import scala.swing.{ComboBox, TextArea, ScrollPane}
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import scala.swing.event.SelectionChanged
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object GUI
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{
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/* Swing look-and-feel */
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def get_laf(): String =
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{
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def laf(name: String): Option[String] =
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UIManager.getInstalledLookAndFeels().find(_.getName == name).map(_.getClassName)
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if (Platform.is_windows || Platform.is_macos)
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UIManager.getSystemLookAndFeelClassName()
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else
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laf("Nimbus") orElse laf("GTK+") getOrElse
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UIManager.getCrossPlatformLookAndFeelClassName()
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}
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def init_laf(): Unit = UIManager.setLookAndFeel(get_laf())
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/* simple dialogs */
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def scrollable_text(txt: String, width: Int = 60, editable: Boolean = false): ScrollPane =
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{
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val text = new TextArea(txt)
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if (width > 0) text.columns = width
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text.editable = editable
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new ScrollPane(text)
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}
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private def simple_dialog(kind: Int, default_title: String,
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parent: Component, title: String, message: Seq[Any])
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{
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Swing_Thread.now {
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val java_message = message map { case x: scala.swing.Component => x.peer case x => x }
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JOptionPane.showMessageDialog(parent,
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java_message.toArray.asInstanceOf[Array[AnyRef]],
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if (title == null) default_title else title, kind)
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}
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}
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def dialog(parent: Component, title: String, message: Any*) =
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simple_dialog(JOptionPane.PLAIN_MESSAGE, null, parent, title, message)
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def warning_dialog(parent: Component, title: String, message: Any*) =
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simple_dialog(JOptionPane.WARNING_MESSAGE, "Warning", parent, title, message)
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def error_dialog(parent: Component, title: String, message: Any*) =
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simple_dialog(JOptionPane.ERROR_MESSAGE, "Error", parent, title, message)
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def confirm_dialog(parent: Component, title: String, option_type: Int, message: Any*): Int =
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Swing_Thread.now {
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val java_message = message map { case x: scala.swing.Component => x.peer case x => x }
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JOptionPane.showConfirmDialog(parent,
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java_message.toArray.asInstanceOf[Array[AnyRef]], title,
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option_type, JOptionPane.QUESTION_MESSAGE)
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}
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/* zoom box */
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class Zoom_Box(apply_factor: Int => Unit) extends ComboBox[String](
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List("50%", "70%", "85%", "100%", "125%", "150%", "175%", "200%", "300%", "400%"))
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{
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val Factor = "([0-9]+)%?".r
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def parse(text: String): Int =
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text match {
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case Factor(s) =>
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val i = Integer.parseInt(s)
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if (10 <= i && i <= 1000) i else 100
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case _ => 100
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}
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def print(i: Int): String = i.toString + "%"
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def set_item(i: Int) {
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peer.getEditor match {
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case null =>
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case editor => editor.setItem(print(i))
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}
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}
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makeEditable()(c => new ComboBox.BuiltInEditor(c)(text => print(parse(text)), x => x))
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reactions += {
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case SelectionChanged(_) => apply_factor(parse(selection.item))
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}
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listenTo(selection)
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selection.index = 3
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prototypeDisplayValue = Some("00000%")
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}
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/* screen resolution */
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def resolution_scale(): Double = Toolkit.getDefaultToolkit.getScreenResolution.toDouble / 72
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def resolution_scale(i: Int): Int = (i.toDouble * resolution_scale()).round.toInt
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/* icon */
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def isabelle_icon(): ImageIcon =
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new ImageIcon(Isabelle_System.platform_path(Path.explode("~~/lib/logo/isabelle.gif")))
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def isabelle_image(): Image = isabelle_icon().getImage
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}
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