author | wenzelm |
Tue, 13 Aug 2013 16:15:31 +0200 | |
changeset 53019 | be9e94594b96 |
parent 53003 | 39da27fc6101 |
child 53184 | 5d6ffb87ee08 |
permissions | -rw-r--r-- |
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/* Title: Tools/jEdit/src/pretty_tooltip.scala |
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Author: Makarius |
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Enhanced tooltip window based on Pretty_Text_Area. |
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*/ |
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package isabelle.jedit |
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import isabelle._ |
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import java.awt.{Color, Point, BorderLayout, Dimension} |
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import java.awt.event.{FocusAdapter, FocusEvent} |
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import javax.swing.{JPanel, JComponent, PopupFactory} |
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import javax.swing.border.LineBorder |
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import scala.swing.{FlowPanel, Label} |
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import scala.swing.event.MouseClicked |
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import org.gjt.sp.jedit.View |
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import org.gjt.sp.jedit.textarea.TextArea |
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object Pretty_Tooltip |
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{ |
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/* tooltip hierarchy */ |
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// owned by Swing thread |
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private var stack: List[Pretty_Tooltip] = Nil |
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private def hierarchy(tip: Pretty_Tooltip): Option[(List[Pretty_Tooltip], List[Pretty_Tooltip])] = |
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{ |
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Swing_Thread.require() |
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if (stack.contains(tip)) Some(stack.span(_ != tip)) |
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else None |
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} |
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def apply( |
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view: View, |
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parent: JComponent, |
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rendering: Rendering, |
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screen_point: Point, |
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results: Command.Results, |
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info: Text.Info[XML.Body]): Pretty_Tooltip = |
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{ |
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Swing_Thread.require() |
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stack match { |
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case top :: _ if top.results == results && top.info == info => top |
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case _ => |
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val (old, rest) = |
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JEdit_Lib.ancestors(parent).collectFirst({ case x: Pretty_Tooltip => x }) match { |
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case Some(tip) => hierarchy(tip).getOrElse((stack, Nil)) |
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case None => (stack, Nil) |
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} |
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old.foreach(_.hide_popup) |
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val tip = new Pretty_Tooltip(view, rendering, parent, screen_point, results, info) |
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stack = tip :: rest |
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tip.show_popup |
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tip |
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} |
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} |
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/* pending event and active state */ // owned by Swing thread |
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private var pending: Option[() => Unit] = None |
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private var active = true |
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private val pending_delay = |
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Swing_Thread.delay_last(PIDE.options.seconds("jedit_tooltip_delay")) { |
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pending match { |
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case Some(body) => pending = None; body() |
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case None => |
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} |
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} |
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def invoke(body: () => Unit): Unit = |
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Swing_Thread.require { |
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if (active) { |
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pending = Some(body) |
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pending_delay.invoke() |
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} |
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} |
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def revoke(): Unit = |
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Swing_Thread.require { |
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pending = None |
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pending_delay.revoke() |
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} |
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private lazy val reactivate_delay = |
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Swing_Thread.delay_last(PIDE.options.seconds("jedit_tooltip_delay")) { |
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active = true |
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} |
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private def deactivate(): Unit = |
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Swing_Thread.require { |
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revoke() |
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active = false |
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reactivate_delay.invoke() |
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} |
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/* dismiss */ |
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def dismiss(tip: Pretty_Tooltip) |
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{ |
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deactivate() |
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hierarchy(tip) match { |
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case Some((old, _ :: rest)) => |
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old.foreach(_.hide_popup) |
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tip.hide_popup |
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stack = rest |
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rest match { |
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case top :: _ => top.request_focus |
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case Nil => JEdit_Lib.request_focus_view |
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} |
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case _ => |
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} |
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} |
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def dismissed_all(): Boolean = |
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{ |
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deactivate() |
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if (stack.isEmpty) false |
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else { |
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stack.foreach(_.hide_popup) |
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stack = Nil |
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JEdit_Lib.request_focus_view |
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true |
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} |
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} |
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} |
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class Pretty_Tooltip private( |
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view: View, |
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rendering: Rendering, |
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142 |
parent: JComponent, |
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screen_point: Point, |
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144 |
private val results: Command.Results, |
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145 |
private val info: Text.Info[XML.Body]) extends JPanel(new BorderLayout) |
49702 | 146 |
{ |
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147 |
tip => |
49705 | 148 |
|
49725 | 149 |
Swing_Thread.require() |
150 |
||
151 |
||
152 |
/* controls */ |
|
153 |
||
49727 | 154 |
private val close = new Label { |
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155 |
icon = rendering.tooltip_close_icon |
49727 | 156 |
tooltip = "Close tooltip window" |
157 |
listenTo(mouse.clicks) |
|
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158 |
reactions += { case _: MouseClicked => Pretty_Tooltip.dismiss(tip) } |
49727 | 159 |
} |
160 |
||
49726 | 161 |
private val detach = new Label { |
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162 |
icon = rendering.tooltip_detach_icon |
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tooltip = "Detach tooltip window" |
164 |
listenTo(mouse.clicks) |
|
165 |
reactions += { |
|
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166 |
case _: MouseClicked => |
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167 |
Info_Dockable(view, rendering.snapshot, results, info.info) |
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168 |
Pretty_Tooltip.dismiss(tip) |
49726 | 169 |
} |
170 |
} |
|
171 |
||
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172 |
private val controls = new FlowPanel(FlowPanel.Alignment.Left)(close, detach) { |
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173 |
background = rendering.tooltip_color |
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} |
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175 |
|
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176 |
|
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177 |
/* text area */ |
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178 |
|
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179 |
val pretty_text_area = |
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180 |
new Pretty_Text_Area(view, () => Pretty_Tooltip.dismiss(tip), true) { |
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181 |
override def get_background() = Some(rendering.tooltip_color) |
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182 |
} |
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183 |
|
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184 |
pretty_text_area.addFocusListener(new FocusAdapter { |
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185 |
override def focusGained(e: FocusEvent) |
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186 |
{ |
52493 | 187 |
tip_border(true) |
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188 |
} |
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189 |
override def focusLost(e: FocusEvent) |
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190 |
{ |
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191 |
Pretty_Tooltip.hierarchy(tip) match { |
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192 |
case Some((Nil, _)) => Pretty_Tooltip.dismiss(tip) |
52493 | 193 |
case _ => tip_border(false) |
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194 |
} |
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195 |
} |
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196 |
}) |
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197 |
|
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198 |
pretty_text_area.resize(Rendering.font_family(), |
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199 |
Rendering.font_size("jedit_tooltip_font_scale").round) |
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200 |
|
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201 |
|
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202 |
/* main content */ |
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203 |
|
52493 | 204 |
def tip_border(has_focus: Boolean) |
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205 |
{ |
52493 | 206 |
tip.setBorder(new LineBorder(if (has_focus) Color.BLACK else Color.GRAY)) |
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207 |
tip.repaint() |
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208 |
} |
52493 | 209 |
tip_border(true) |
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210 |
|
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211 |
override def getFocusTraversalKeysEnabled = false |
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212 |
tip.setBackground(rendering.tooltip_color) |
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213 |
tip.add(controls.peer, BorderLayout.NORTH) |
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214 |
tip.add(pretty_text_area) |
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215 |
|
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216 |
|
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|
217 |
/* popup */ |
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218 |
|
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|
219 |
private val popup = |
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220 |
{ |
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221 |
val screen_bounds = JEdit_Lib.screen_bounds(screen_point) |
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222 |
|
52492 | 223 |
val (w, h) = |
224 |
{ |
|
225 |
val painter = pretty_text_area.getPainter |
|
226 |
val metric = JEdit_Lib.pretty_metric(painter) |
|
227 |
val margin = rendering.tooltip_margin * metric.average |
|
228 |
||
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|
229 |
val formatted = Pretty.formatted(info.info, margin, metric) |
52492 | 230 |
val lines = |
231 |
XML.traverse_text(formatted)(0)( |
|
232 |
(n: Int, s: String) => n + s.iterator.filter(_ == '\n').length) |
|
233 |
||
53019 | 234 |
val geometry = JEdit_Lib.window_geometry(tip, tip.pretty_text_area.getPainter) |
52492 | 235 |
val bounds = rendering.tooltip_bounds |
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|
236 |
|
53019 | 237 |
val h1 = painter.getFontMetrics.getHeight * (lines + 1) + geometry.deco_height |
52492 | 238 |
val h2 = (screen_bounds.height * bounds).toInt |
239 |
val h = h1 min h2 |
|
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240 |
|
52492 | 241 |
val margin1 = |
242 |
if (h1 <= h2) |
|
243 |
(0.0 /: split_lines(XML.content(formatted)))({ case (m, line) => m max metric(line) }) |
|
244 |
else margin |
|
245 |
val w = |
|
53019 | 246 |
((metric.unit * (margin1 + metric.average)).round.toInt + geometry.deco_width) min |
52492 | 247 |
(screen_bounds.width * bounds).toInt |
248 |
||
249 |
(w, h) |
|
250 |
} |
|
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251 |
|
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252 |
tip.setSize(new Dimension(w, h)) |
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253 |
tip.setPreferredSize(new Dimension(w, h)) |
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254 |
|
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255 |
val x = screen_point.x min (screen_bounds.x + screen_bounds.width - tip.getWidth) |
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256 |
val y = screen_point.y min (screen_bounds.y + screen_bounds.height - tip.getHeight) |
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|
257 |
PopupFactory.getSharedInstance.getPopup(parent, tip, x, y) |
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258 |
} |
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|
259 |
|
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260 |
private def show_popup |
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261 |
{ |
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|
262 |
popup.show |
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|
263 |
pretty_text_area.requestFocus |
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changeset
|
264 |
pretty_text_area.update(rendering.snapshot, results, info.info) |
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265 |
} |
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266 |
|
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267 |
private def hide_popup: Unit = popup.hide |
52498 | 268 |
|
269 |
private def request_focus: Unit = pretty_text_area.requestFocus |
|
49702 | 270 |
} |
271 |