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Mac OS X: When grabbing the mouse, skip the next event to avoid bogus deltas

This commit is contained in:
Elias Naur 2007-05-31 22:09:46 +00:00
parent 52b5958191
commit 31d821941e
1 changed files with 9 additions and 0 deletions
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9
src/java/org/lwjgl/opengl/MacOSXMouseEventQueue.java
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@ -53,6 +53,7 @@ import org.lwjgl.input.Mouse;
final class MacOSXMouseEventQueue extends MouseEventQueue {
private final IntBuffer delta_buffer = BufferUtils.createIntBuffer(2);
private boolean skip_event;
private static boolean is_grabbed;
MacOSXMouseEventQueue(Component component) {
@ -84,6 +85,10 @@ final class MacOSXMouseEventQueue extends MouseEventQueue {
getMouseDeltas(delta_buffer);
int dx = delta_buffer.get(0);
int dy = -delta_buffer.get(1);
if (skip_event) {
skip_event = false;
return;
}
if ( dx != 0 || dy != 0 ) {
putMouseEventWithCoords((byte)-1, (byte)0, dx, dy, 0, nanos);
addDelta(dx, dy);
@ -92,6 +97,10 @@ final class MacOSXMouseEventQueue extends MouseEventQueue {
}
void warpCursor() {
synchronized (this) {
// If we're going to warp the cursor position, we'll skip the next event to avoid bogus delta values
skip_event = isGrabbed();
}
if (isGrabbed()) {
Rectangle bounds = getComponent().getBounds();
Point location_on_screen = getComponent().getLocationOnScreen();