overhaul gui icons + settings

src/main/java/ch/zhaw/gartenverwaltung/CropDetailController.java

@@ -14,6 +14,7 @@ import javafx.fxml.FXML;
 import javafx.geometry.Pos;
 import javafx.scene.control.Button;
 import javafx.scene.control.Label;
+import javafx.scene.image.Image;
 import javafx.scene.image.ImageView;
 import javafx.scene.layout.HBox;
 import javafx.scene.layout.VBox;
@@ -72,6 +73,9 @@ public class CropDetailController {
     @FXML
     private Label spacing_label;
 
+    @FXML
+    private Button editTaskList_button;
+
     @FXML
     void editTaskList() {
 
@@ -114,6 +118,9 @@ public class CropDetailController {
         } catch (HardinessZoneNotSetException | IOException e) {
             throw new PlantNotFoundException();
         }
+        setIconToButton(editTaskList_button, "editIcon.png");
+        setIconToButton(area_button, "areaIcon.png");
+        setIconToButton(location_button, "locationIcon.png");
     }
 
     private void createTaskLists(Crop crop) {
@@ -149,4 +156,17 @@ public class CropDetailController {
             pests_vbox.getChildren().addAll(label, hBox);
         }
     }
+
+    /**
+     * adds icon to button
+     * @param button the button which get the icon
+     * @param iconFileName file name of icon
+     */
+    private void setIconToButton(Button button, String iconFileName) {
+        Image img = new Image(String.valueOf(getClass().getResource("icons/" + iconFileName)));
+        ImageView imageView = new ImageView(img);
+        imageView.setFitHeight(20);
+        imageView.setPreserveRatio(true);
+        button.setGraphic(imageView);
+    }
 }