simple bar notifications

src/yugecin/opsudance/core/state/specialstates/BarNotificationState.java

@@ -0,0 +1,86 @@
+/*
+ * opsu!dance - fork of opsu! with cursordance auto
+ * Copyright (C) 2017 yugecin
+ *
+ * opsu!dance is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * opsu!dance is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with opsu!dance.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package yugecin.opsudance.core.state.specialstates;
+
+import itdelatrisu.opsu.ui.Fonts;
+import org.newdawn.slick.Color;
+import org.newdawn.slick.Graphics;
+import yugecin.opsudance.core.DisplayContainer;
+import yugecin.opsudance.core.events.EventBus;
+import yugecin.opsudance.core.events.EventListener;
+import yugecin.opsudance.events.BarNotificationEvent;
+import yugecin.opsudance.events.ResolutionChangedEvent;
+
+public class BarNotificationState implements EventListener<BarNotificationEvent> {
+
+	private final int NOTIFICATION_TIME = 5000;
+
+	private final DisplayContainer displayContainer;
+	private final Color bgcol;
+
+	private int timeShown;
+
+	private String message;
+	private int textX;
+	private int textY;
+	private int barY;
+	private int barHeight;
+
+	public BarNotificationState(DisplayContainer displayContainer, EventBus eventBus) {
+		this.displayContainer = displayContainer;
+		this.bgcol = new Color(0f, 0f, 0f, 0f);
+		this.timeShown = NOTIFICATION_TIME;
+		eventBus.subscribe(BarNotificationEvent.class, this);
+		eventBus.subscribe(ResolutionChangedEvent.class, new EventListener<ResolutionChangedEvent>() {
+			@Override
+			public void onEvent(ResolutionChangedEvent event) {
+				if (timeShown >= NOTIFICATION_TIME) {
+					return;
+				}
+				calculatePosition();
+			}
+		});
+	}
+
+	public void render(Graphics g, int delta) {
+		if (timeShown >= NOTIFICATION_TIME) {
+			return;
+		}
+		timeShown += delta;
+		g.setColor(bgcol);
+		g.fillRect(0, barY, displayContainer.width, barHeight);
+		Fonts.LARGE.drawString(textX, textY, message);
+	}
+
+	private void calculatePosition() {
+		int textHeight = Fonts.LARGE.getHeight(message);
+		int textWidth = Fonts.LARGE.getWidth(message);
+		textX = (displayContainer.width - textWidth) / 2;
+		textY = (displayContainer.height - textHeight) / 2;
+		barY = textY - 5; // TODO uiscale stuff?
+		barHeight = textHeight + 10;
+	}
+
+	@Override
+	public void onEvent(BarNotificationEvent event) {
+		this.message = event.message;
+		calculatePosition();
+		timeShown = 0;
+	}
+
+}