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