Added maximum size for displaying sent images

additionally:
- made selecting of bmp or gif images possible
- defined a DEFAULT_ICON_SIZE in which most icons are loaded
- displayed attachment button with attachment icon

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

@@ -93,12 +93,13 @@ public final class ChatScene implements Restorable {
 	private AudioRecorder	recorder;
 	private boolean			recording;
 	private Attachment		pendingAttachment;
-	private boolean			postingPermanentlyDisabled	= false;
+	private boolean			postingPermanentlyDisabled;
 
 	private static final Settings	settings			= Settings.getInstance();
 	private static final EventBus	eventBus			= EventBus.getInstance();
 	private static final Logger		logger				= EnvoyLog.getLogger(ChatScene.class);
 	private static final int		MAX_MESSAGE_LENGTH	= 255;
+	private static final int		DEFAULT_ICON_SIZE	= 16;
 
 	/**
 	 * Initializes the appearance of certain visual components.
@@ -112,8 +113,10 @@ public final class ChatScene implements Restorable {
 		messageList.setCellFactory(MessageListCellFactory::new);
 		userList.setCellFactory(ContactListCellFactory::new);
 
-		settingsButton.setGraphic(new ImageView(IconUtil.loadIconThemeSensitive("settings", 16)));
-		voiceButton.setGraphic(new ImageView(IconUtil.loadIconThemeSensitive("microphone", 20)));
+		settingsButton.setGraphic(new ImageView(IconUtil.loadIconThemeSensitive("settings", DEFAULT_ICON_SIZE)));
+		voiceButton.setGraphic(new ImageView(IconUtil.loadIconThemeSensitive("microphone", DEFAULT_ICON_SIZE)));
+		attachmentButton.setGraphic(new ImageView(IconUtil.loadIconThemeSensitive("attachment", DEFAULT_ICON_SIZE)));
+		attachmentView.setImage(IconUtil.loadIconThemeSensitive("attachment_present", 20));
 
 		// Listen to received messages
 		eventBus.register(MessageCreationEvent.class, e -> {
@@ -273,17 +276,16 @@ public final class ChatScene implements Restorable {
 					recording = true;
 					Platform.runLater(() -> {
 						voiceButton.setText("Recording");
-						voiceButton.setGraphic(new ImageView(IconUtil.loadIcon("microphone_recording", 24)));
+						voiceButton.setGraphic(new ImageView(IconUtil.loadIcon("microphone_recording", DEFAULT_ICON_SIZE)));
 					});
 					recorder.start();
 				} else {
 					pendingAttachment	= new Attachment(recorder.finish(), AttachmentType.VOICE);
 					recording			= false;
 					Platform.runLater(() -> {
-						voiceButton.setGraphic(new ImageView(IconUtil.loadIconThemeSensitive("microphone", 20)));
+						voiceButton.setGraphic(new ImageView(IconUtil.loadIconThemeSensitive("microphone", DEFAULT_ICON_SIZE)));
 						voiceButton.setText(null);
 						checkPostConditions(false);
-						attachmentView.setImage(IconUtil.loadIconThemeSensitive("attachment_present", 20));
 						attachmentView.setVisible(true);
 					});
 				}
@@ -302,12 +304,12 @@ public final class ChatScene implements Restorable {
 		fileChooser.setTitle("Add Attachment");
 		fileChooser.setInitialDirectory(new File(System.getProperty("user.home")));
 		fileChooser.getExtensionFilters()
-			.addAll(new FileChooser.ExtensionFilter("Pictures", "*.png", "*.jpg"),
+			.addAll(new FileChooser.ExtensionFilter("Pictures", "*.png", "*.jpg", "*.bmp", "*.gif"),
 					new FileChooser.ExtensionFilter("Videos", "*.mp4"),
 					new FileChooser.ExtensionFilter("All Files", "*.*"));
 		final var file = fileChooser.showOpenDialog(sceneContext.getStage());
 
-		if(file != null) {
+		if (file != null) {
 
 			// Check max file size
 			if (file.length() > 16E6) {
@@ -330,7 +332,7 @@ public final class ChatScene implements Restorable {
 			try {
 				pendingAttachment = new Attachment(Files.readAllBytes(file.toPath()), type);
 				attachmentView.setVisible(true);
-			} catch (IOException e) {
+			} catch (final IOException e) {
 				new Alert(AlertType.ERROR, "The selected file could not be loaded!").showAndWait();
 			}
 		}
@@ -422,8 +424,7 @@ public final class ChatScene implements Restorable {
 		final var text = messageTextArea.getText().strip();
 		try {
 			// Creating the message and its metadata
-			final var builder = new MessageBuilder(localDB.getUser().getID(), currentChat.getRecipient().getID(), localDB
-				.getIDGenerator())
+			final var builder = new MessageBuilder(localDB.getUser().getID(), currentChat.getRecipient().getID(), localDB.getIDGenerator())
 				.setText(text);
 			// Setting an attachment, if present
 			if (pendingAttachment != null) {
@@ -432,8 +433,7 @@ public final class ChatScene implements Restorable {
 				attachmentView.setVisible(false);
 			}
 			// Building the final message
-			final var message = currentChat.getRecipient() instanceof Group ? builder.buildGroupMessage((Group) currentChat
-				.getRecipient())
+			final var message = currentChat.getRecipient() instanceof Group ? builder.buildGroupMessage((Group) currentChat.getRecipient())
 					: builder.build();
 
 			// Send message

src/main/java/envoy/client/ui/listcell/MessageControl.java

@@ -68,7 +68,7 @@ public class MessageControl extends Label {
 		if (message.hasAttachment()) {
 			switch (message.getAttachment().getType()) {
 				case PICTURE:
-					vbox.getChildren().add(new ImageView(new Image(new ByteArrayInputStream(message.getAttachment().getData()))));
+					vbox.getChildren().add(new ImageView(new Image(new ByteArrayInputStream(message.getAttachment().getData()), 256, 256, true, true)));
 					break;
 				case VIDEO:
 					break;
@@ -92,9 +92,7 @@ public class MessageControl extends Label {
 			statusIcon.setPreserveRatio(true);
 			vbox.getChildren().add(statusIcon);
 			getStyleClass().add("own-message");
-		} else {
-			getStyleClass().add("received-message");
-		}
+		} else getStyleClass().add("received-message");
 		// Adjusting height and weight of the cell to the corresponding ListView
 		paddingProperty().setValue(new Insets(5, 20, 5, 20));
 		setContextMenu(contextMenu);

src/main/resources/fxml/ChatScene.fxml

@@ -101,8 +101,7 @@
 			</GridPane.margin>
 			<buttons>
 				<Button fx:id="attachmentButton" disable="true"
-					mnemonicParsing="false" onAction="#attachmentButtonClicked"
-					text="Add Attachment" />
+					mnemonicParsing="false" onAction="#attachmentButtonClicked" />
 				<Button fx:id="voiceButton" disable="true"
 					onAction="#voiceButtonClicked">
 					<padding>