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Adjust selection bounds for CTabRenderring #3533

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Adjust selection bounds for CTabRenderring #3533

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30 changes: 19 additions & 11 deletions ....workbench.renderers.swt/src/org/eclipse/e4/ui/workbench/renderers/swt/CTabRendering.java
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@
package org.eclipse.e4.ui.workbench.renderers.swt;

import java.lang.reflect.Field;
import java.util.Arrays;
import java.util.Objects;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.preferences.IEclipsePreferences;
Expand Down Expand Up @@ -626,12 +627,24 @@ void drawSelectedTab(int itemIndex, GC gc, Rectangle bounds) {
if (onBottom) {
highlightOnTop = !highlightOnTop;
}
int highlightHeight = 2;
int verticalOffset = highlightOnTop ? 0 : bounds.height - (highlightHeight - 1);
int horizontalOffset = itemIndex == 0 || cornerSize == SQUARE_CORNER ? 0 : 1;
int widthAdjustment = cornerSize == SQUARE_CORNER ? 0 : 1;
gc.fillRectangle(bounds.x + horizontalOffset, bounds.y + verticalOffset, bounds.width - widthAdjustment,
highlightHeight);
final int highlightHeight = 2;
if (cornerSize == SQUARE_CORNER || highlightOnTop == onBottom) {
int verticalOffset = highlightOnTop ? 0 : outlineBoundsForOutline.height - (highlightHeight - 1);
gc.fillRectangle(outlineBoundsForOutline.x,
outlineBoundsForOutline.y + verticalOffset, outlineBoundsForOutline.width, highlightHeight);
} else {
int[] highlightShape = Arrays.copyOfRange(tabOutlinePoints, 12, tabOutlinePoints.length - 12);
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@arunjose696 arunjose696 Dec 24, 2025 •
edited
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I was not able to follow what was 12, I think it would be better if it could be given a variable name for readablity,

int highlightY = highlightOnTop ? highlightHeight
: outlineBoundsForOutline.height - highlightHeight;
highlightShape[1] = highlightShape[3] = highlightShape[highlightShape.length
- 1] = highlightShape[highlightShape.length - 3] = highlightY;
gc.setAdvanced(false);
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@arunjose696 arunjose696 Dec 24, 2025

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why do we unset the advanced mode only in this branch, also does it make sense to reset the advanced mode to the previous value?

gc.fillPolygon(highlightShape);
gc.setForeground(tabOutlineColor);
if (TAB_OUTLINE_WIDTH > 0) {
gc.drawPolyline(tabOutlinePoints);
}
}
}

if (backgroundPattern != null) {
Expand All @@ -640,11 +653,6 @@ void drawSelectedTab(int itemIndex, GC gc, Rectangle bounds) {
if (foregroundPattern != null) {
foregroundPattern.dispose();
}

gc.setForeground(tabOutlineColor);
if (TAB_OUTLINE_WIDTH > 0) {
gc.drawPolyline(tabOutlinePoints);
}
}

void drawUnselectedTab(int itemIndex, GC gc, Rectangle bounds, int state) {
Expand Down
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