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IDEA-149395 catch possible exceptions (IDEA-151088)

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This commit is contained in:
Sergey Malenkov
2016-02-02 12:20:10 +03:00
parent 36473e4711
commit 4fc43445c5
1 changed files with 31 additions and 5 deletions
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platform/platform-api/src/com/intellij/ui/components/JBScrollPane.java
+31 -5
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@@ -40,9 +40,8 @@ import java.awt.image.*;
public class JBScrollPane extends JScrollPane {
public static final RegionPainter<Float> TRACK_PAINTER = new AlphaPainter(.0f, .1f);
public static final RegionPainter<Float> THUMB_PAINTER = SystemInfo.isWindows // others do not support custom composites
? new SubtractThumbPainter(.20f, .15f, Gray.x91)
: new ThumbPainter(.35f, .25f, Gray.x6E);
public static final RegionPainter<Float> THUMB_PAINTER = new ProtectedPainter(new SubtractThumbPainter(.20f, .15f, Gray.x91),
new ThumbPainter(.35f, .25f, Gray.x6E));
public static final RegionPainter<Float> THUMB_DARK_PAINTER = new ThumbPainter(.35f, .25f, Gray.x94);
private int myViewportBorderWidth = -1;
@@ -703,6 +702,34 @@ public class JBScrollPane extends JScrollPane {
}
}
private static class ProtectedPainter implements RegionPainter<Float> {
private RegionPainter<Float> myPainter;
private RegionPainter<Float> myFallback;
public ProtectedPainter(RegionPainter<Float> painter, RegionPainter<Float> fallback) {
myPainter = painter;
myFallback = fallback;
}
@Override
public void paint(Graphics2D g, int x, int y, int width, int height, Float value) {
RegionPainter<Float> painter = myFallback;
if (myPainter != null) {
try {
myPainter.paint(g, x, y, width, height, value);
return;
}
catch (Exception exception) {
// do not try to use myPainter again on other systems
if (!SystemInfo.isWindows) myPainter = null;
}
}
if (painter != null) {
painter.paint(g, x, y, width, height, value);
}
}
}
private static class AlphaPainter implements RegionPainter<Float> {
private final float myBase;
private final float myDelta;
@@ -747,8 +774,7 @@ public class JBScrollPane extends JScrollPane {
@Override
void paint(Graphics2D g, int x, int y, int width, int height) {
super.paint(g, x, y, width, height);
g.fillRect(x + 1, y + 1, width - 2, height - 2);
super.paint(g, x + 1, y + 1, width - 2, height - 2);
g.setColor(myColor);
if (Registry.is("ide.scroll.thumb.border.rounded")) {
g.drawLine(x + 1, y, x + width - 2, y);