Graphical User Interface in Java Using JavaFX

Transcription

1 Graphical User Interface in Java Using JavaFX Layouts Brought to you by 1

2 What are Layouts? Until now, we only worked with the simplest Node container which was Pane. It s the simplest one, because we specified the location of our elements by hand in pixel format. Now days, with a great needs of responsive UIs no one is going to hard code the location of UI elements. So we need smarter node container. A smart container decides about the location of an element automatically based on a specified behavior. 2

3 JavaFX Containers Hierarchy: Region Control Pane SplitPane ScrollPane AnchorPane BorderPane VBox HBox Accordion TabPane DialogPane FlowPane GridPane StackPane TilePane 3

4 BorderPane: TOP LEFT CENTER RIGHT BOTTOM 4

5 Demo 1: BorderPane 5

6 Demo 1: BorderPane 6

7 AcnchorPane: Node Node 30px AnchorPane allows the edges of child nodes to be anchored to an offset from the anchor pane's edges. 7

8 AcnchorPane: Constraint Type Description topanchor double distance from the anchor pane's top insets to the child's top edge. leftanchor double distance from the anchor pane's left insets to the child's left edge. bottomanchor double distance from the anchor pane's bottom insets to the child's bottom edge. rightanchor double distance from the anchor pane's right insets to the child's right edge. static void static void static void static void setbottomanchor(node child, Double value) Sets the bottom anchor for the child when contained by an anchor pane. setleftanchor(node child, Double value) Sets the left anchor for the child when contained by an anchor pane. setrightanchor(node child, Double value) Sets the right anchor for the child when contained by an anchor pane. settopanchor(node child, Double value) Sets the top anchor for the child when contained by an anchor pane. 8

9 Demo 2: 9

10 Demo 2: 10

11 Hbox/Vbox: Node Node Node Node spacing Node Node 11

12 Demo 3: 12

13 Demo 3: 13

14 Demo 3: 14

15 StackPane: 15

16 Demo 4: 16

17 Demo 4: 17

18 Demo 4: 18

19 GridPane: (0,0) (1,0) (2,0) (0,1) (1,1) (0,2) (1,2) (2,3) vgap padding hgap 19

20 Demo 5 (1/3): 20

21 Demo 5 (2/3): 21

22 Demo 5 (3/3): 22

23 FlowPane: Node1 Node2 Node3 Node4 Node1 Node2 VGap HGap Node3 Node4 23

24 Demo 6: 24

25 Demo 6: 25

26 Demo 6: A horizontal flowpane (the default) will layout nodes in rows, wrapping at the flowpane's width. A vertical flowpane lays out nodes in columns, wrapping at the flowpane's height. 26

27 TilePane: Node1 Node2 Node3 Node4 Node1 Node2 Node3 Node4 27

28 Demo 7: 28

29 DialogPane: We will talk about Dialogs separately. 29

30 JavaFX Containers Hierarchy: Region Control Pane SplitPane ScrollPane AnchorPane BorderPane VBox HBox Accordion TabPane DialogPane FlowPane GridPane StackPane TilePane 30

31 Control versus Pane: A "Control" is a node in the scene graph which can be manipulated by the user. Controls provide additional variables and behaviors beyond those of Node to support common user interactions in a manner which is consistent and predictable for the user. Pane is the base class for layout panes which need to expose the children list as public so that users of the subclass can freely add/remove children. 31

32 ScrollPane: Some very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very Long Text Some very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very 32

33 Demo 8: 33

34 SplitPane: Divider BOTTOM RIGHT BOTTOM Divider Position between [ ] 34

35 Demo 9: 100% 80% 20% 35

36 TabPane: Tab1 Tab2 Tab3 Tab Content 36

37 Demo 10: 37

38 Live Coding: UI Sketch to JavaFX 38

39 Codes: 39

40 Happy Coding Brought to you by 40