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package moe.nea.mossbar.concepts;
import org.freedesktop.wayland.client.*;
import org.freedesktop.wayland.shared.WlOutputTransform;
import org.freedesktop.wayland.shared.ZwlrLayerShellV1Layer;
import org.freedesktop.wayland.shared.ZwlrLayerSurfaceV1Anchor;
import org.freedesktop.wayland.util.EnumUtil;
import java.io.IOException;
import java.nio.IntBuffer;
import java.util.EnumSet;
public class Bar extends Scope {
private final Display display;
private final WlSurfaceProxy surface;
private final ZwlrLayerSurfaceV1Proxy layer;
private final ShmBufferPool bufferPool;
private WlCallbackProxy callbackProxy;
public Bar(Display display, Output output) {
this.display = display;
this.surface = display.compositorProxy.createSurface(new WlSurfaceEventsV6() {
@Override
public void enter(WlSurfaceProxy emitter, WlOutputProxy output) {
System.out.println("Surface entered");
}
@Override
public void leave(WlSurfaceProxy emitter, WlOutputProxy output) {
System.out.println("Left surface");
}
@Override
public void preferredBufferScale(WlSurfaceProxy emitter, int factor) {
System.out.println("Preferred buffer scale ${factor}");
}
@Override
public void preferredBufferTransform(WlSurfaceProxy emitter, int transform) {
var transforms = EnumUtil.decode(WlOutputTransform.class, transform);
System.out.println("Preferred buffer transform ${transforms}");
}
}).bindTo(this);
this.layer = display.layerShell.getLayerSurface(new ZwlrLayerSurfaceV1EventsV4() {
@Override
public void configure(ZwlrLayerSurfaceV1Proxy emitter, int serial, int width, int height) {
System.out.println("Configure layer ${serial} ${width}x${height}");
emitter.ackConfigure(serial);
}
@Override
public void closed(ZwlrLayerSurfaceV1Proxy emitter) {
System.out.println("layer closed");
}
}, this.surface, output.proxy, ZwlrLayerShellV1Layer.OVERLAY.getValue(), "mossbar")
.bindTo(this);
if (output.width <= 0)
throw new IllegalStateException("Monitor with 0 sized output");
int width = output.width;
int height = 30;
layer.setSize(width, height); // TODO??? this should really not be a hardcoded width
layer.setAnchor(EnumUtil.encode(EnumSet.of(ZwlrLayerSurfaceV1Anchor.TOP, ZwlrLayerSurfaceV1Anchor.RIGHT, ZwlrLayerSurfaceV1Anchor.LEFT)));
layer.setExclusiveZone(height);
surface.commit();
try {
bufferPool = ShmBufferPool.newARGBPool(display, width, height, 2);
} catch (IOException e) {
throw new RuntimeException(e);
}
display.roundtrip();
}
public void renderOnce() {
var nextBuffer = bufferPool.poll();
assert nextBuffer != null;
var pixels = nextBuffer.getByteBuffer().asIntBuffer();
fill(pixels, 0xFFFF00A0);
surface.attach(nextBuffer.getProxy(), 0, 0);
surface.damage(0, 0, nextBuffer.width, nextBuffer.height);
queueNextFrame();
surface.commit();
}
private void queueNextFrame() {
if (callbackProxy != null)
callbackProxy.destroy();
callbackProxy = surface.frame((_, _) -> renderOnce());
}
@Override
public void closeObject() {
callbackProxy.destroy();
super.closeObject();
}
private static void fill(IntBuffer buffer, int value) {
buffer.clear();
buffer.limit(buffer.capacity());
while (buffer.hasRemaining()) {
buffer.put(value);
}
}
}
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