| author | wenzelm |
| Tue, 27 Aug 2013 12:35:32 +0200 | |
| changeset 53226 | 9cf8e2263ca7 |
| parent 53183 | 018d71bee930 |
| child 53231 | 423e29f1f304 |
| permissions | -rw-r--r-- |
| 49406 | 1 |
/* Title: Tools/jEdit/src/jedit_lib.scala |
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Author: Makarius |
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Misc library functions for jEdit. |
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*/ |
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package isabelle.jedit |
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import isabelle._ |
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import java.awt.{Component, Container, Window, GraphicsEnvironment, Point, Rectangle}
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53226
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more systematic JEdit_Lib.key_listener with optional KeyEventWorkaround;
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parents:
53183
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import java.awt.event.{KeyEvent, KeyListener}
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import javax.swing.{Icon, ImageIcon, JWindow}
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import scala.annotation.tailrec |
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import org.gjt.sp.jedit.{jEdit, Buffer, View, GUIUtilities}
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import org.gjt.sp.jedit.gui.KeyEventWorkaround |
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import org.gjt.sp.jedit.buffer.JEditBuffer |
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51492
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more explicit Pretty.Metric, with clear distinction of unit (space width) vs. average char width (for visual adjustments) -- NB: Pretty formatting works via full space characters (despite a981a5c8a505 and 70f7483df9cb);
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parents:
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import org.gjt.sp.jedit.textarea.{JEditTextArea, TextArea, TextAreaPainter}
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object JEdit_Lib |
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{
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/* bounds within multi-screen environment */ |
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parents:
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more general handling of graphics configurations, to increase chance of proper positioning of tooltips in multi-screen environment;
wenzelm
parents:
50363
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def screen_bounds(screen_point: Point): Rectangle = |
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{
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wenzelm
parents:
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val ge = GraphicsEnvironment.getLocalGraphicsEnvironment |
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(for {
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device <- ge.getScreenDevices.iterator |
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config <- device.getConfigurations.iterator |
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bounds = config.getBounds |
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} yield bounds).find(_.contains(screen_point)) getOrElse ge.getMaximumWindowBounds |
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} |
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wenzelm
parents:
50363
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more general handling of graphics configurations, to increase chance of proper positioning of tooltips in multi-screen environment;
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parents:
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/* window geometry measurement */ |
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private lazy val dummy_window = new JWindow |
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final case class Window_Geometry(width: Int, height: Int, inner_width: Int, inner_height: Int) |
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{
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def deco_width: Int = width - inner_width |
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def deco_height: Int = height - inner_height |
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} |
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def window_geometry(outer: Container, inner: Component): Window_Geometry = |
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{
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Swing_Thread.require() |
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val old_content = dummy_window.getContentPane |
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dummy_window.setContentPane(outer) |
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dummy_window.pack |
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dummy_window.revalidate |
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val geometry = |
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Window_Geometry( |
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dummy_window.getWidth, dummy_window.getHeight, inner.getWidth, inner.getHeight) |
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dummy_window.setContentPane(old_content) |
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geometry |
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} |
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/* GUI components */ |
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def get_parent(component: Component): Option[Container] = |
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component.getParent match {
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case null => None |
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case parent => Some(parent) |
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} |
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def ancestors(component: Component): Iterator[Container] = new Iterator[Container] {
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private var next_elem = get_parent(component) |
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def hasNext(): Boolean = next_elem.isDefined |
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def next(): Container = |
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next_elem match {
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case Some(parent) => |
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next_elem = get_parent(parent) |
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parent |
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case None => Iterator.empty.next() |
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} |
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} |
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def parent_window(component: Component): Option[Window] = |
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ancestors(component).collectFirst({ case x: Window => x })
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refer to parent frame -- relevant for floating dockables in particular;
wenzelm
parents:
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refer to parent frame -- relevant for floating dockables in particular;
wenzelm
parents:
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50186
f83cab68c788
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wenzelm
parents:
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/* basic tooltips, with multi-line support */ |
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parents:
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def wrap_tooltip(text: String): String = |
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if (text == "") null |
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else "<html><pre>" + HTML.encode(text) + "</pre></html>" |
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wenzelm
parents:
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recovered some tooltip wrapping from e2762f962042, with multi-line support via HTML.encode;
wenzelm
parents:
50116
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/* buffers */ |
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def swing_buffer_lock[A](buffer: JEditBuffer)(body: => A): A = |
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Swing_Thread.now { buffer_lock(buffer) { body } }
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def buffer_text(buffer: JEditBuffer): String = |
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buffer_lock(buffer) { buffer.getText(0, buffer.getLength) }
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def buffer_name(buffer: Buffer): String = buffer.getSymlinkPath |
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/* focus of main window */ |
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attempt to transfer focus back to main window after closing popups, which is potentially relevant for heavy-weight windows (cf. workaround in org/gjt/sp/jedit/gui/CompletionPopup.java);
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def request_focus_view: Unit = |
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{
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jEdit.getActiveView() match {
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39da27fc6101
attempt to transfer focus back to main window after closing popups, which is potentially relevant for heavy-weight windows (cf. workaround in org/gjt/sp/jedit/gui/CompletionPopup.java);
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case null => |
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case view => |
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view.getTextArea match {
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39da27fc6101
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case null => |
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attempt to transfer focus back to main window after closing popups, which is potentially relevant for heavy-weight windows (cf. workaround in org/gjt/sp/jedit/gui/CompletionPopup.java);
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case text_area => text_area.requestFocus |
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39da27fc6101
attempt to transfer focus back to main window after closing popups, which is potentially relevant for heavy-weight windows (cf. workaround in org/gjt/sp/jedit/gui/CompletionPopup.java);
wenzelm
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} |
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39da27fc6101
attempt to transfer focus back to main window after closing popups, which is potentially relevant for heavy-weight windows (cf. workaround in org/gjt/sp/jedit/gui/CompletionPopup.java);
wenzelm
parents:
52874
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changeset
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} |
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39da27fc6101
attempt to transfer focus back to main window after closing popups, which is potentially relevant for heavy-weight windows (cf. workaround in org/gjt/sp/jedit/gui/CompletionPopup.java);
wenzelm
parents:
52874
diff
changeset
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} |
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39da27fc6101
attempt to transfer focus back to main window after closing popups, which is potentially relevant for heavy-weight windows (cf. workaround in org/gjt/sp/jedit/gui/CompletionPopup.java);
wenzelm
parents:
52874
diff
changeset
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39da27fc6101
attempt to transfer focus back to main window after closing popups, which is potentially relevant for heavy-weight windows (cf. workaround in org/gjt/sp/jedit/gui/CompletionPopup.java);
wenzelm
parents:
52874
diff
changeset
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/* main jEdit components */ |
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def jedit_buffers(): Iterator[Buffer] = jEdit.getBuffers().iterator |
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def jedit_buffer(name: String): Option[Buffer] = |
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jedit_buffers().find(buffer => buffer_name(buffer) == name) |
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def jedit_views(): Iterator[View] = jEdit.getViews().iterator |
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def jedit_text_areas(view: View): Iterator[JEditTextArea] = |
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view.getEditPanes().iterator.map(_.getTextArea) |
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def jedit_text_areas(): Iterator[JEditTextArea] = |
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jedit_views().flatMap(jedit_text_areas(_)) |
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def jedit_text_areas(buffer: JEditBuffer): Iterator[JEditTextArea] = |
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jedit_text_areas().filter(_.getBuffer == buffer) |
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def buffer_lock[A](buffer: JEditBuffer)(body: => A): A = |
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{
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try { buffer.readLock(); body }
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finally { buffer.readUnlock() }
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} |
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def buffer_edit[A](buffer: JEditBuffer)(body: => A): A = |
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{
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wenzelm
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try { buffer.beginCompoundEdit(); body }
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wenzelm
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50186
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finally { buffer.endCompoundEdit() }
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863b1dfc396c
prefer buffer_edit combinator over Java-style boilerplate;
wenzelm
parents:
50186
diff
changeset
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} |
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prefer buffer_edit combinator over Java-style boilerplate;
wenzelm
parents:
50186
diff
changeset
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/* get text */ |
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def try_get_text(buffer: JEditBuffer, range: Text.Range): Option[String] = |
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try { Some(buffer.getText(range.start, range.length)) }
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catch { case _: ArrayIndexOutOfBoundsException => None }
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/* buffer range */ |
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wenzelm
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def buffer_range(buffer: JEditBuffer): Text.Range = |
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Text.Range(0, (buffer.getLength - 1) max 0) |
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parents:
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/* point range */ |
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def point_range(buffer: JEditBuffer, offset: Text.Offset): Text.Range = |
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buffer_lock(buffer) {
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def text(i: Text.Offset): Char = buffer.getText(i, 1).charAt(0) |
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try {
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val c = text(offset) |
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if (Character.isHighSurrogate(c) && Character.isLowSurrogate(text(offset + 1))) |
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Text.Range(offset, offset + 2) |
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else if (Character.isLowSurrogate(c) && Character.isHighSurrogate(text(offset - 1))) |
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Text.Range(offset - 1, offset + 1) |
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else Text.Range(offset, offset + 1) |
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} |
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catch { case _: ArrayIndexOutOfBoundsException => Text.Range(offset, offset + 1) }
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} |
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/* visible text range */ |
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def visible_range(text_area: TextArea): Option[Text.Range] = |
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{
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val buffer = text_area.getBuffer |
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val n = text_area.getVisibleLines |
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if (n > 0) {
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val start = text_area.getScreenLineStartOffset(0) |
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val raw_end = text_area.getScreenLineEndOffset(n - 1) |
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wenzelm
parents:
49712
diff
changeset
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val end = if (raw_end >= 0) raw_end min buffer.getLength else buffer.getLength |
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further refinement of jEdit line range, avoiding lack of final \n;
wenzelm
parents:
49712
diff
changeset
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Some(Text.Range(start, end)) |
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} |
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else None |
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} |
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def invalidate_range(text_area: TextArea, range: Text.Range) |
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{
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val buffer = text_area.getBuffer |
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text_area.invalidateLineRange( |
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buffer.getLineOfOffset(range.start), |
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buffer.getLineOfOffset(range.stop)) |
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} |
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/* graphics range */ |
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case class Gfx_Range(val x: Int, val y: Int, val length: Int) |
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49843
afddf4e26fac
further refinement of jEdit line range, avoiding lack of final \n;
wenzelm
parents:
49712
diff
changeset
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// NB: jEdit always normalizes \r\n and \r to \n |
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// NB: last line lacks \n |
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def gfx_range(text_area: TextArea, range: Text.Range): Option[Gfx_Range] = |
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{
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| 51507 | 219 |
val metric = pretty_metric(text_area.getPainter) |
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51492
eaa1c4cc1106
more explicit Pretty.Metric, with clear distinction of unit (space width) vs. average char width (for visual adjustments) -- NB: Pretty formatting works via full space characters (despite a981a5c8a505 and 70f7483df9cb);
wenzelm
parents:
51469
diff
changeset
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val char_width = (metric.unit * metric.average).round.toInt |
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val buffer = text_area.getBuffer |
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val end = buffer.getLength |
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val stop = range.stop |
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51078
4e1c940b1fb2
more robust JEdit_Lib.pixel_range, which could crash via Rich_Text_Area.tooltip_painter with bad mouse coordinates;
wenzelm
parents:
50849
diff
changeset
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4e1c940b1fb2
more robust JEdit_Lib.pixel_range, which could crash via Rich_Text_Area.tooltip_painter with bad mouse coordinates;
wenzelm
parents:
50849
diff
changeset
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227 |
val (p, q, r) = |
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4e1c940b1fb2
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wenzelm
parents:
50849
diff
changeset
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228 |
try {
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4e1c940b1fb2
more robust JEdit_Lib.pixel_range, which could crash via Rich_Text_Area.tooltip_painter with bad mouse coordinates;
wenzelm
parents:
50849
diff
changeset
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229 |
val p = text_area.offsetToXY(range.start) |
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4e1c940b1fb2
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wenzelm
parents:
50849
diff
changeset
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230 |
val (q, r) = |
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4e1c940b1fb2
more robust JEdit_Lib.pixel_range, which could crash via Rich_Text_Area.tooltip_painter with bad mouse coordinates;
wenzelm
parents:
50849
diff
changeset
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231 |
if (stop >= end) (text_area.offsetToXY(end), char_width * (stop - end)) |
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4e1c940b1fb2
more robust JEdit_Lib.pixel_range, which could crash via Rich_Text_Area.tooltip_painter with bad mouse coordinates;
wenzelm
parents:
50849
diff
changeset
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else if (stop > 0 && buffer.getText(stop - 1, 1) == "\n") |
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(text_area.offsetToXY(stop - 1), char_width) |
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else (text_area.offsetToXY(stop), 0) |
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(p, q, r) |
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} |
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catch { case _: ArrayIndexOutOfBoundsException => (null, null, 0) }
|
| 49409 | 238 |
|
239 |
if (p != null && q != null && p.x < q.x + r && p.y == q.y) |
|
| 50115 | 240 |
Some(Gfx_Range(p.x, p.y, q.x + r - p.x)) |
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else None |
242 |
} |
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243 |
|
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244 |
|
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/* pixel range */ |
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246 |
|
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def pixel_range(text_area: TextArea, x: Int, y: Int): Option[Text.Range] = |
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{
|
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// coordinates wrt. inner painter component |
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val painter = text_area.getPainter |
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if (0 <= x && x < painter.getWidth && 0 <= y && y < painter.getHeight) {
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val offset = text_area.xyToOffset(x, y, false) |
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if (offset >= 0) {
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val range = point_range(text_area.getBuffer, offset) |
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gfx_range(text_area, range) match {
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case Some(g) if (g.x <= x && x < g.x + g.length) => Some(range) |
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case _ => None |
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} |
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} |
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else None |
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} |
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else None |
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263 |
} |
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264 |
|
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265 |
|
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/* pretty text metric */ |
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267 |
|
| 51507 | 268 |
abstract class Pretty_Metric extends Pretty.Metric |
269 |
{
|
|
270 |
def average: Double |
|
271 |
} |
|
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272 |
|
| 51507 | 273 |
def pretty_metric(painter: TextAreaPainter): Pretty_Metric = |
274 |
new Pretty_Metric {
|
|
275 |
def string_width(s: String): Double = |
|
276 |
painter.getFont.getStringBounds(s, painter.getFontRenderContext).getWidth |
|
277 |
||
278 |
val unit = string_width(Pretty.space) |
|
279 |
val average = string_width("mix") / (3 * unit)
|
|
280 |
def apply(s: String): Double = if (s == "\n") 1.0 else string_width(s) / unit |
|
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281 |
} |
| 52873 | 282 |
|
283 |
||
284 |
/* icons */ |
|
285 |
||
286 |
def load_icon(name: String): Icon = |
|
287 |
{
|
|
288 |
val name1 = |
|
289 |
if (name.startsWith("idea-icons/")) {
|
|
290 |
val file = |
|
291 |
Isabelle_System.platform_file_url(Path.explode("$JEDIT_HOME/dist/jars/idea-icons.jar"))
|
|
292 |
"jar:" + file + "!/" + name |
|
293 |
} |
|
294 |
else name |
|
295 |
val icon = GUIUtilities.loadIcon(name1) |
|
296 |
if (icon.getIconWidth < 0 || icon.getIconHeight < 0) error("Bad icon: " + name)
|
|
297 |
else icon |
|
298 |
} |
|
| 52874 | 299 |
|
300 |
def load_image_icon(name: String): ImageIcon = |
|
301 |
load_icon(name) match {
|
|
302 |
case icon: ImageIcon => icon |
|
303 |
case _ => error("Bad image icon: " + name)
|
|
304 |
} |
|
|
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|
305 |
|
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|
306 |
|
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307 |
/* key listener */ |
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308 |
|
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309 |
def key_listener( |
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310 |
workaround: Boolean = true, |
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311 |
key_typed: KeyEvent => Unit = _ => (), |
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key_pressed: KeyEvent => Unit = _ => (), |
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key_released: KeyEvent => Unit = _ => ()): KeyListener = |
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|
314 |
{
|
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|
315 |
def process_key_event(evt0: KeyEvent, handle: KeyEvent => Unit) |
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|
316 |
{
|
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317 |
val evt = if (workaround) KeyEventWorkaround.processKeyEvent(evt0) else evt0 |
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318 |
if (evt != null) handle(evt) |
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|
319 |
} |
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|
320 |
|
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|
321 |
new KeyListener |
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|
322 |
{
|
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|
323 |
def keyTyped(evt: KeyEvent) { process_key_event(evt, key_typed) }
|
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324 |
def keyPressed(evt: KeyEvent) { process_key_event(evt, key_pressed) }
|
|
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325 |
def keyReleased(evt: KeyEvent) { process_key_event(evt, key_released) }
|
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|
326 |
} |
|
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|
327 |
} |
| 49406 | 328 |
} |
329 |