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JRE-100 Scroll with inertia (Mac os) should only work in the initial component

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(cherry picked from commit e79502c708)
This commit is contained in:
Sergey Malenkov
2018-07-13 11:58:21 +07:00
committed by jbrbot
parent da62d071cd
commit 9b1b9d2ce7
1 changed files with 20 additions and 1 deletions
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21
src/java.desktop/macosx/classes/sun/lwawt/macosx/CPlatformResponder.java
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@@ -46,6 +46,10 @@ final class CPlatformResponder {
private int lastKeyPressCode = KeyEvent.VK_UNDEFINED;
private final DeltaAccumulator deltaAccumulatorX = new DeltaAccumulator();
private final DeltaAccumulator deltaAccumulatorY = new DeltaAccumulator();
private boolean momentumStarted;
private int momentumX;
private int momentumY;
private int momentumModifiers;
private int lastDraggedAbsoluteX;
private int lastDraggedAbsoluteY;
private int lastDraggedRelativeX;
@@ -113,11 +117,26 @@ final class CPlatformResponder {
/**
* Handles scroll events.
*/
void handleScrollEvent(final int x, final int y, final int absX,
void handleScrollEvent(int x, int y, final int absX,
final int absY, final int modifierFlags,
final double deltaX, final double deltaY,
final int scrollPhase) {
int jmodifiers = NSEvent.nsToJavaModifiers(modifierFlags);
if (scrollPhase > NSEvent.SCROLL_PHASE_UNSUPPORTED) {
if (scrollPhase == NSEvent.SCROLL_PHASE_BEGAN) {
momentumStarted = false;
} else if (scrollPhase == NSEvent.SCROLL_PHASE_MOMENTUM_BEGAN) {
momentumStarted = true;
momentumX = x;
momentumY = y;
momentumModifiers = jmodifiers;
} else if (momentumStarted) {
x = momentumX;
y = momentumY;
jmodifiers = momentumModifiers;
}
}
final boolean isShift = (jmodifiers & InputEvent.SHIFT_DOWN_MASK) != 0;
int roundDeltaX = deltaAccumulatorX.getRoundedDelta(deltaX, scrollPhase);