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#85 - even slower throttle for Swing frames

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Autumn Lamonte 2021-12-29 16:55:23 -06:00
parent 0ec57b447b
commit 8658df5d45
1 changed files with 9 additions and 10 deletions
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19
src/jexer/backend/SwingTerminal.java
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@ -106,8 +106,7 @@ public class SwingTerminal extends LogicalScreen
* request for an initial burst of frames. If Toolkit.sync() is called
* too frequently, the window system and/or video driver can crash.
*
* A value of 2 or less is very responsive, while 25 or more feels
* sluggish for input but is sustainable for the windowing system.
* A value of 2 or less is very responsive for user input.
*/
private static final long SYNC_MIN_MILLIS_BURST = 2;
@ -117,10 +116,10 @@ public class SwingTerminal extends LogicalScreen
* Toolkit.sync() is called too frequently, the window system and/or
* video driver can crash.
*
* A value of 2 or less is very responsive, while 25 or more feels
* sluggish for input but is sustainable for the windowing system.
* A value of 30 or more feels sluggish for input, but is sustainable for
* the windowing system.
*/
private static final long SYNC_MIN_MILLIS_SUSTAIN = 25;
private static final long SYNC_MIN_MILLIS_SUSTAIN = 50;
/**
* The number of frames that can be emitted quickly (at
@ -645,11 +644,12 @@ public class SwingTerminal extends LogicalScreen
*/
@Override
public void flushPhysical() {
if (frameRequests > SYNC_BURST_COUNT) {
if ((syncMinMillis == SYNC_MIN_MILLIS_BURST)
&& (frameRequests > SYNC_BURST_COUNT)
) {
// System.err.println("Auto - Switch to sustain");
// Switch to throttled frames.
syncMinMillis = SYNC_MIN_MILLIS_SUSTAIN;
frameRequests = 0;
}
// See if it is time to flip the blink time.
@ -679,9 +679,6 @@ public class SwingTerminal extends LogicalScreen
* Display the Swing triple-buffer buffer on the screen.
*/
private void syncSwingBuffer() {
if (syncMinMillis == SYNC_MIN_MILLIS_BURST) {
frameRequests++;
}
long now = System.currentTimeMillis();
while (now - lastSyncTime < syncMinMillis) {
try {
@ -698,6 +695,8 @@ public class SwingTerminal extends LogicalScreen
// System.err.println("Auto - Allow bursts");
syncMinMillis = SYNC_MIN_MILLIS_BURST;
frameRequests = 0;
} else if (syncMinMillis == SYNC_MIN_MILLIS_BURST) {
frameRequests++;
}
lastSyncTime = now;