Add Image Caching (#95)

Add image caching

Co-authored-by: kske <kai@kske.dev>
Reviewed-on: https://git.kske.dev/zdm/envoy/pulls/95
Reviewed-by: kske <kai@kske.dev>
Reviewed-by: DieGurke <maxi@kske.dev>

client/src/main/java/envoy/client/ui/controller/ChatScene.java

@@ -132,7 +132,6 @@ public final class ChatScene implements EventListener, Restorable {
 
 	private Chat				currentChat;
 	private FilteredList<Chat>	chats;
-	private boolean				recording;
 	private Attachment			pendingAttachment;
 	private boolean				postingPermanentlyDisabled;
 	private boolean				isCustomAttachmentImage;
@@ -354,7 +353,8 @@ public final class ChatScene implements EventListener, Restorable {
 			// Discard the pending attachment
 			if (recorder.isRecording()) {
 				recorder.cancel();
-				recording = false;
+				voiceButton.setGraphic(new ImageView(IconUtil.loadIconThemeSensitive("microphone", DEFAULT_ICON_SIZE)));
+				voiceButton.setText(null);
 			}
 			pendingAttachment = null;
 			updateAttachmentView(false);
@@ -414,18 +414,16 @@ public final class ChatScene implements EventListener, Restorable {
 	private void voiceButtonClicked() {
 		new Thread(() -> {
 			try {
-				if (!recording) {
-					recording = true;
+				if (!recorder.isRecording()) {
 					Platform.runLater(() -> {
 						voiceButton.setText("Recording");
 						voiceButton.setGraphic(new ImageView(IconUtil.loadIcon("microphone_recording", DEFAULT_ICON_SIZE)));
 					});
 					recorder.start();
 				} else {
-					pendingAttachment	= new Attachment(recorder.finish(), "Voice_recording_"
+					pendingAttachment = new Attachment(recorder.finish(), "Voice_recording_"
 							+ DateTimeFormatter.ofPattern("yyyy_MM_dd-HH_mm_ss").format(LocalDateTime.now()) + "." + AudioRecorder.FILE_FORMAT,
 							AttachmentType.VOICE);
-					recording			= false;
 					Platform.runLater(() -> {
 						voiceButton.setGraphic(new ImageView(IconUtil.loadIconThemeSensitive("microphone", DEFAULT_ICON_SIZE)));
 						voiceButton.setText(null);

client/src/main/java/envoy/client/util/IconUtil.java

@@ -21,6 +21,10 @@ import envoy.util.EnvoyLog;
  */
 public final class IconUtil {
 
+	private static final HashMap<String, Image>			cache		= new HashMap<>();
+	private static final HashMap<String, Image>			scaledCache	= new HashMap<>();
+	private static final HashMap<String, BufferedImage>	awtCache	= new HashMap<>();
+
 	private IconUtil() {}
 
 	/**
@@ -30,7 +34,7 @@ public final class IconUtil {
 	 * @return the loaded image
 	 * @since Envoy Client v0.1-beta
 	 */
-	public static Image load(String path) { return new Image(IconUtil.class.getResource(path).toExternalForm()); }
+	public static Image load(String path) { return cache.computeIfAbsent(path, p -> new Image(IconUtil.class.getResource(p).toExternalForm())); }
 
 	/**
 	 * Loads an image from the resource folder and scales it to the given size.
@@ -41,12 +45,13 @@ public final class IconUtil {
 	 * @since Envoy Client v0.1-beta
 	 */
 	public static Image load(String path, int size) {
-		return new Image(IconUtil.class.getResource(path).toExternalForm(), size, size, true, true);
+		return scaledCache.computeIfAbsent(path + size, p -> new Image(IconUtil.class.getResource(path).toExternalForm(), size, size, true, true));
 	}
 
 	/**
 	 * Loads a {@code .png} image from the sub-folder {@code /icons/} of the
-	 * resource folder.<br>
+	 * resource folder.
+	 * <p>
 	 * The suffix {@code .png} is automatically appended.
 	 *
 	 * @param name the image name without the .png suffix
@@ -138,13 +143,14 @@ public final class IconUtil {
 	 * @since Envoy Client v0.2-beta
 	 */
 	public static BufferedImage loadAWTCompatible(String path) {
-		BufferedImage image = null;
-		try {
-			image = ImageIO.read(IconUtil.class.getResource(path));
-		} catch (final IOException e) {
-			EnvoyLog.getLogger(IconUtil.class).log(Level.WARNING, String.format("Could not load image at path %s: ", path), e);
-		}
-		return image;
+		return awtCache.computeIfAbsent(path, p -> {
+			try {
+				return ImageIO.read(IconUtil.class.getResource(path));
+			} catch (IOException e) {
+				EnvoyLog.getLogger(IconUtil.class).log(Level.WARNING, String.format("Could not load image at path %s: ", path), e);
+				return null;
+			}
+		});
 	}
 
 	/**

client/src/main/resources/fxml/ChatScene.fxml

@@ -175,7 +175,7 @@
 								<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
 							</padding>
 							<HBox.margin>
-								<Insets bottom="35.0" left="5.0" top="35.0"/>
+								<Insets bottom="35.0" left="5.0" top="35.0" />
 							</HBox.margin>
 						</Button>
 					</children>