Adding shapes to a GUI
Hi all,
Im just starting out producing a GUI and im using netbeans to help me.
I need to add shapes to my GUI, just basic square, circle etc for now. I also need to show these shapes moving around the GUI, animated.
Firstly what is the best way to add these basic shapes to a jpanel and secondly how do i go out moving thse objects around the jpanel.
Thanks for your help
Puce,
Thanks for your help.
I have been through the 2d graphics tutorials and had a look at them but i am still having problems.
I want to add the shape to an existing jpanel on a GUI containing several jpanels.
I am unsure where the code for this goes as in the tutorial it just has a seperate class for a single panel which then seems to overide the paintcomponent method. Where would i do this in my single class for the whole GUI.
Thanks Again
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The ShapeDraw applet lets the user add small colored shapes to
a drawing area and then drag them around. The shapes are rectangles,
ovals, and roundrects. The user adds a shape to the canvas by
clicking on a button. The shape is added at the upper left corner
of the canvas. The color of the shape is given by the current
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brought to the front.
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delete the shape and to bring it to the front.
This file defines the applet class plus several other classes used
by the applet, namely: ShapeCanvas, Shape, RectShape, OvalShape,
and RoundRectShape.
David Eck
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import java.awt.*;
import java.awt.event.*;
import java.applet.Applet;
import java.util.Vector;
public class ShapeDrawWithMenu extends Applet {
public void init() {
// Set up the applet's GUI. It consists of a canvas, or drawing area,
// plus a row of controls below the canvas. The controls include three
// buttons which are used to add shapes to the canvas and a Choice menu
// that is used to select the color used for a shape when it is created.
// The canvas is set as the "listener" for these controls so that it can
// respond to the user's actions. (The pop-up menu is created by the canvas.)
setBackground(Color.lightGray);
ShapeCanvas canvas = new ShapeCanvas(); // create the canvas
Choice colorChoice = new Choice(); // color choice menu
colorChoice.add("Red");
colorChoice.add("Green");
colorChoice.add("Blue");
colorChoice.add("Cyan");
colorChoice.add("Magenta");
colorChoice.add("Yellow");
colorChoice.add("Black");
colorChoice.add("White");
colorChoice.addItemListener(canvas);
Button rectButton = new Button("Rect"); // buttons for adding shapes
rectButton.addActionListener(canvas);
Button ovalButton = new Button("Oval");
ovalButton.addActionListener(canvas);
Button roundRectButton = new Button("RoundRect");
roundRectButton.addActionListener(canvas);
Panel bottom = new Panel(); // a Panel to hold the control buttons
bottom.setLayout(new GridLayout(1,4,3,3));
bottom.add(rectButton);
bottom.add(ovalButton);
bottom.add(roundRectButton);
bottom.add(colorChoice);
setLayout(new BorderLayout(3,3));
add("Center",canvas); // add canvas and controls to the applet
add("South",bottom);
public Insets getInsets() {
// Says how much space to leave between the edges of the applet and the
// components in the applet.
return new Insets(3,3,3,3);
} // end class ShapeDraw
class ShapeCanvas extends Canvas implements ActionListener, ItemListener,
MouseListener, MouseMotionListener {
// This class represents a canvas that can display colored shapes and
// let the user drag them around. It uses an off-screen images to
// make the dragging look as smooth as possible. A pop-up menu is
// added to the canvas that can be used to performa certain actions
// on the shapes;
Image offScreenCanvas = null; // off-screen image used for double buffering
Graphics offScreenGraphics; // graphics context for drawing to offScreenCanvas
Vector shapes = new Vector(); // holds a list of the shapes that are displayed on the canvas
Color currentColor = Color.red; // current color; when a shape is created, this is its color
ShapeCanvas() {
// Constructor: set background color to white, set up listeners to respond to mouse actions,
// and set up the pop-up menu
setBackground(Color.white);
addMouseListener(this);
addMouseMotionListener(this);
popup = new PopupMenu();
popup.add("Red");
popup.add("Green");
popup.add("Blue");
popup.add("Cyan");
popup.add("Magenta");
popup.add("Yellow");
popup.add("Black");
popup.add("White");
popup.addSeparator();
popup.add("Big");
popup.add("Medium");
popup.add("Small");
popup.addSeparator();
popup.add("Delete");
popup.add("Bring To Front");
add(popup);
popup.addActionListener(this);
} // end construtor
synchronized public void paint(Graphics g) {
// In the paint method, everything is drawn to an off-screen canvas, and then
// that canvas is copied onto the screen.
makeOffScreenCanvas();
g.drawImage(offScreenCanvas,0,0,this);
public void update(Graphics g) {
// Update method is called when canvas is to be redrawn.
// Just call the paint method.
paint(g);
void makeOffScreenCanvas() {
// Erase the off-screen canvas and redraw all the shapes in the list.
// (First, if canvas has not yet been created, then create it.)
if (offScreenCanvas == null) {
offScreenCanvas = createImage(getSize().width,getSize().height);
offScreenGraphics = offScreenCanvas.getGraphics();
offScreenGraphics.setColor(getBackground());
offScreenGraphics.fillRect(0,0,getSize().width,getSize().height);
int top = shapes.size();
for (int i = 0; i < top; i++) {
Shape s = (Shape)shapes.elementAt(i);
s.draw(offScreenGraphics);
public void itemStateChanged(ItemEvent evt) {
// This is called to respond to item events. Such events
// can only be sent by the color choice menu,
// so respond by setting the current color according to
// the selected item in that menu.
Choice colorChoice = (Choice)evt.getItemSelectable();
switch (colorChoice.getSelectedIndex()) {
case 0: currentColor = Color.red; break;
case 1: currentColor = Color.green; break;
case 2: currentColor = Color.blue; break;
case 3: currentColor = Color.cyan; break;
case 4: currentColor = Color.magenta; break;
case 5: currentColor = Color.yellow; break;
case 6: currentColor = Color.black; break;
case 7: currentColor = Color.white; break;
public void actionPerformed(ActionEvent evt) {
// Called to respond to action events. The three shape-adding
// buttons have been set up to send action events to this canvas.
// Respond by adding the appropriate shape to the canvas. This
// also be a command from a pop-up menu.
String command = evt.getActionCommand();
if (command.equals("Rect"))
addShape(new RectShape());
else if (command.equals("Oval"))
addShape(new OvalShape());
else if (command.equals("RoundRect"))
addShape(new RoundRectShape());
else
doPopupMenuCommand(command);
synchronized void addShape(Shape shape) {
// Add the shape to the canvas, and set its size/position and color.
// The shape is added at the top-left corner, with size 50-by-30.
// Then redraw the canvas to show the newly added shape.
shape.setColor(currentColor);
shape.reshape(3,3,50,30);
shapes.addElement(shape);
repaint();
// ------------ This rest of the class implements dragging and the pop-up menu ---------------------
PopupMenu popup;
Shape selectedShape = null; // This is null unless a menu has been popped up on this shape.
Shape draggedShape = null; // This is null unless a shape has been selected for dragging.
int prevDragX; // During dragging, these record the x and y coordinates of the
int prevDragY; // previous position of the mouse.
Shape clickedShape(int x, int y) {
// Find the frontmost shape at coordinates (x,y); return null if there is none.
for ( int i = shapes.size() - 1; i >= 0; i-- ) { // check shapes from front to back
Shape s = (Shape)shapes.elementAt(i);
if (s.containsPoint(x,y))
return s;
return null;
void doPopupMenuCommand(String command) {
// Handle a command from the pop-up menu.
if (selectedShape == null) // should be impossible
return;
if (command.equals("Red"))
selectedShape.setColor(Color.red);
else if (command.equals("Green"))
selectedShape.setColor(Color.green);
else if (command.equals("Blue"))
selectedShape.setColor(Color.blue);
else if (command.equals("Cyan"))
selectedShape.setColor(Color.cyan);
else if (command.equals("Magenta"))
selectedShape.setColor(Color.magenta);
else if (command.equals("Yellow"))
selectedShape.setColor(Color.yellow);
else if (command.equals("Black"))
selectedShape.setColor(Color.black);
else if (command.equals("White"))
selectedShape.setColor(Color.white);
else if (command.equals("Big"))
selectedShape.resize(75,45);
else if (command.equals("Medium"))
selectedShape.resize(50,30);
else if (command.equals("Small"))
selectedShape.resize(25,15);
else if (command.equals("Delete"))
shapes.removeElement(selectedShape);
else if (command.equals("Bring To Front")) {
shapes.removeElement(selectedShape);
shapes.addElement(selectedShape);
repaint();
synchronized public void mousePressed(MouseEvent evt) {
// User has pressed the mouse. Find the shape that the user has clicked on, if
// any. If there is a shape at the position when the mouse was clicked, then
// start dragging it. If the user was holding down the shift key, then bring
// the dragged shape to the front, in front of all the other shapes.
int x = evt.getX(); // x-coordinate of point where mouse was clicked
int y = evt.getY(); // y-coordinate of point
if (evt.isPopupTrigger()) { // If this is a pop-up menu event that
selectedShape = clickedShape(x,y); // occurred over a shape, record which shape
if (selectedShape != null) // it is and show the menu.
popup.show(this,x,y);
else {
draggedShape = clickedShape(x,y);
if (draggedShape != null) {
prevDragX = x;
prevDragY = y;
if (evt.isShiftDown()) { // Bring the shape to the front by moving it to
shapes.removeElement(draggedShape); // the end of the list of shapes.
shapes.addElement(draggedShape);
repaint(); // repaint canvas to show shape in front of other shapes
synchronized public void mouseDragged(MouseEvent evt) {
// User has moved the mouse. Move the dragged shape by the same amount.
if (draggedShape != null) {
int x = evt.getX();
int y = evt.getY();
draggedShape.moveBy(x - prevDragX, y - prevDragY);
prevDragX = x;
prevDragY = y;
repaint(); // redraw canvas to show shape in new position
synchronized public void mouseReleased(MouseEvent evt) {
// User has released the mouse. Move the dragged shape, then set
// shapeBeingDragged to null to indicate that dragging is over.
// If the shape lies completely outside the canvas, remove it
// from the list of shapes (since there is no way to ever move
// it back onscreen).
int x = evt.getX();
int y = evt.getY();
if (draggedShape != null) {
draggedShape.moveBy(x - prevDragX, y - prevDragY);
if ( draggedShape.left >= getSize().width || draggedShape.top >= getSize().height ||
draggedShape.left + draggedShape.width < 0 ||
draggedShape.top + draggedShape.height < 0 ) { // shape is off-screen
shapes.removeElement(draggedShape); // remove shape from list of shapes
draggedShape = null;
repaint();
else if (evt.isPopupTrigger()) { // If this is a pop-up menu event that
selectedShape = clickedShape(x,y); // occurred over a shape, record the
if (selectedShape != null) // shape and show the menu.
popup.show(this,x,y);
public void mouseEntered(MouseEvent evt) { } // Other methods required for MouseListener and
public void mouseExited(MouseEvent evt) { } // MouseMotionListener interfaces.
public void mouseMoved(MouseEvent evt) { }
public void mouseClicked(MouseEvent evt) { }
} // end class ShapeCanvas
abstract class Shape {
// A class representing shapes that can be displayed on a ShapeCanvas.
// The subclasses of this class represent particular types of shapes.
// When a shape is first constucted, it has height and width zero
// and a default color of white.
int left, top; // Position of top left corner of rectangle that bounds this shape.
int width, height; // Size of the bounding rectangle.
Color color = Color.white; // Color of this shape.
void reshape(int left, int top, int width, int height) {
// Set the position and size of this shape.
this.left = left;
this.top = top;
this.width = width;
this.height = height;
void resize(int width,int height) {
// Set the size without changing the position
this.width = width;
this.height = height;
void moveTo(int x, int y) {
// Move upper left corner to the point (x,y)
this.left = x;
this.top = y;
void moveBy(int dx, int dy) {
// Move the shape by dx pixels horizontally and dy pixels veritcally
// (by changing the position of the top-left corner of the shape).
left += dx;
top += dy;
void setColor(Color color) {
// Set the color of this shape
this.color = color;
boolean containsPoint(int x, int y) {
// Check whether the shape contains the point (x,y).
// By default, this just checks whether (x,y) is inside the
// rectangle that bounds the shape. This method should be
// overridden by a subclass if the default behaviour is not
// appropriate for the subclass.
if (x >= left && x < left+width && y >= top && y < top+height)
return true;
else
return false;
abstract void draw(Graphics g);
// Draw the shape in the graphics context g.
// This must be overriden in any concrete subclass.
} // end of class Shape
class RectShape extends Shape {
// This class represents rectangle shapes.
void draw(Graphics g) {
g.setColor(color);
g.fillRect(left,top,width,height);
g.setColor(Color.black);
g.drawRect(left,top,width,height);
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// This class represents oval shapes.
void draw(Graphics g) {
g.setColor(color);
g.fillOval(left,top,width,height);
g.setColor(Color.black);
g.drawOval(left,top,width,height);
boolean containsPoint(int x, int y) {
// Check whether (x,y) is inside this oval, using the
// mathematical equation of an ellipse.
double rx = width/2.0; // horizontal radius of ellipse
double ry = height/2.0; // vertical radius of ellipse
double cx = left + rx; // x-coord of center of ellipse
double cy = top + ry; // y-coord of center of ellipse
if ( (ry*(x-cx))*(ry*(x-cx)) + (rx*(y-cy))*(rx*(y-cy)) <= rx*rx*ry*ry )
return true;
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return false;
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// This class represents rectangle shapes with rounded corners.
// (Note that it uses the inherited version of the
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void draw(Graphics g) {
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Please don't post in old threads that are long dead. When you have a question, please start a topic of your own. Feel free to provide a link to an old thread if relevant.
I'm locking this 3 year old thread now.
db
edit You have earlier been advised not to post in old dead threads.
[http://forums.sun.com/thread.jspa?threadID=354443]
Continuing to ignore this advice will render your account liable to be blocked.
Edited by: Darryl.Burke -
How can I include, in the table of content, a title that I have put on a shape?
Hello all,
1. I have a table of content
2. I have added shapes
3. I wrote text (titles. subtitles) on the shapes
4. They do not appear in the table of content.
5. They only appear in the table of content if they are not on a shape.
Pages 5.5.2
Can you help?
LawHi Law,
Text in a shape or a text box will not feature in the table of contents.
To get a colour behind your titles, type them into your document (not a shape). Format as Heading or some other paragraph style the TOC will recognise.
Select the title text and Format Panel > Text > Font > Gearwheel > Advanced Options.
Choose Character Fill Color and choose a colour from the palette (left) or colour circle (right).
Example Titles (all on the same page for a smaller screen shot).
Chapter 3 (in a coloured Text Box or Shape) does not appear in the TOC:
Hint for cheats :
To give the titles a wider Character Fill Colour, add some Tab characters before and after.
Regards,
Ian. -
Storing Shape Information IN a Table-Like Structure
Hi All,
I have a Program which displays shape (rectangle,oval,etc) in the panel which is enclosed in a frame.. shape can be dragged and dropped anywhere on panel... also one can delete shape... Now I Want To Store All The Exiting Shapes (as they are added on panel ) in some structure say a table, and alongwith it, i also want to store additional information about shape, say its location currently on panel, its present color, etc so that i can use this information later in the program... how do i do implement this ?? Plz Help Me.. It would be great if you include the changes in the source code itself...
thanks
Here is the source code :
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.ArrayList;
public class ShapeDrawFrame extends javax.swing.JFrame {
JCheckBoxMenuItem addLargeShapes;
JCheckBoxMenuItem addBorderedShapes;
JRadioButtonMenuItem red, green, blue,
cyan, magenta, yellow,
black, gray, white;
JPopupMenu popup;
public ShapeDrawFrame() {
super("Shape Draw");
//initComponents();
ShapeCanvas canvas = new ShapeCanvas();
setContentPane(canvas);
/* Create the menu bar and the menus */
JMenuBar menubar = new JMenuBar();
setJMenuBar(menubar);
JMenu addShapeMenu = new JMenu("Add");
addShapeMenu.setMnemonic('A');
menubar.add(addShapeMenu);
JMenu shapeColorMenu = new JMenu("Color");
shapeColorMenu.setMnemonic('C');
menubar.add(shapeColorMenu);
JMenu optionsMenu = new JMenu("Options");
optionsMenu.setMnemonic('O');
menubar.add(optionsMenu);
/* Create menu items for adding shapes to the canvas,
and add them to the "Add" menu. The canvas serves
as ActionListener for these menu items. */
JMenuItem rect = new JMenuItem("Rectangle");
rect.setAccelerator( KeyStroke.getKeyStroke("ctrl R") );
addShapeMenu.add(rect);
rect.addActionListener(canvas);
JMenuItem oval = new JMenuItem("Oval");
oval.setAccelerator( KeyStroke.getKeyStroke("ctrl O") );
addShapeMenu.add(oval);
oval.addActionListener(canvas);
JMenuItem roundrect = new JMenuItem("Round Rect");
roundrect.setAccelerator( KeyStroke.getKeyStroke("ctrl D") );
addShapeMenu.add(roundrect);
roundrect.addActionListener(canvas);
/* Create the JRadioButtonMenuItems that control the color
of a newly added shape, and add them to the "Color"
menu. There is no ActionListener for these menu items.
The canvas checks for the currently selected color when
it adds a shape to the canvas. A ButtonGroup is used
to make sure that only one color is selected. */
ButtonGroup colorGroup = new ButtonGroup();
red = new JRadioButtonMenuItem("Red");
shapeColorMenu.add(red);
colorGroup.add(red);
red.setSelected(true);
green = new JRadioButtonMenuItem("Green");
shapeColorMenu.add(green);
colorGroup.add(green);
blue = new JRadioButtonMenuItem("Blue");
shapeColorMenu.add(blue);
colorGroup.add(blue);
cyan = new JRadioButtonMenuItem("Cyan");
shapeColorMenu.add(cyan);
colorGroup.add(cyan);
magenta = new JRadioButtonMenuItem("Magenta");
shapeColorMenu.add(magenta);
colorGroup.add(magenta);
yellow = new JRadioButtonMenuItem("Yellow");
shapeColorMenu.add(yellow);
colorGroup.add(yellow);
black = new JRadioButtonMenuItem("Black");
shapeColorMenu.add(black);
colorGroup.add(black);
gray = new JRadioButtonMenuItem("Gray");
shapeColorMenu.add(gray);
colorGroup.add(gray);
white = new JRadioButtonMenuItem("White");
shapeColorMenu.add(white);
colorGroup.add(white);
/* Create the "Clear" menu item, and add it to the
"Options" menu. The canvas will listen for events
from this menu item. */
JMenuItem clear = new JMenuItem("Clear");
clear.setAccelerator( KeyStroke.getKeyStroke("ctrl C") );
clear.addActionListener(canvas);
optionsMenu.add(clear);
optionsMenu.addSeparator(); // Add a separating line to the menu.
/* Create the JCheckBoxMenuItems and add them to the Options
menu. There is no ActionListener for these items because
the canvas class will check their state when it adds a
new shape. */
addLargeShapes = new JCheckBoxMenuItem("Add Large Shapes");
addLargeShapes.setSelected(true);
optionsMenu.add(addLargeShapes);
addBorderedShapes = new JCheckBoxMenuItem("Add Shapes with Border");
addBorderedShapes.setSelected(true);
optionsMenu.add(addBorderedShapes);
optionsMenu.addSeparator();
/* Create a menu for background colors, and add it to the
"Options" menu. It will show up as a hierarchical sub-menu. */
JMenu background = new JMenu("Background Color");
optionsMenu.add(background);
background.add("Red").addActionListener(canvas);
background.add("Green").addActionListener(canvas);
background.add("Blue").addActionListener(canvas);
background.add("Cyan").addActionListener(canvas);
background.add("Magenta").addActionListener(canvas);
background.add("Yellow").addActionListener(canvas);
background.add("Black").addActionListener(canvas);
background.add("Gray").addActionListener(canvas);
background.add("White").addActionListener(canvas);
/* Create the pop-up menu and add commands for editing a
shape. This menu is not used until the user performs
the pop-up trigger mouse gesture on a shape. */
popup = new JPopupMenu();
popup.add("Delete Shape").addActionListener(canvas);
popup.add("Bring to Front").addActionListener(canvas);
popup.addSeparator();
popup.add("Make Large").addActionListener(canvas);
popup.add("Make Small").addActionListener(canvas);
popup.addSeparator();
popup.add("Add Black Border").addActionListener(canvas);
popup.add("Remove Black Border").addActionListener(canvas);
popup.addSeparator();
popup.add("Set Color to Red").addActionListener(canvas);
popup.add("Set Color to Green").addActionListener(canvas);
popup.add("Set Color to Blue").addActionListener(canvas);
popup.add("Set Color to Cyan").addActionListener(canvas);
popup.add("Set Color to Magenta").addActionListener(canvas);
popup.add("Set Color to Yellow").addActionListener(canvas);
popup.add("Set Color to Black").addActionListener(canvas);
popup.add("Set Color to Gray").addActionListener(canvas);
popup.add("Set Color to White").addActionListener(canvas);
/* Set the "DefaultCloseOperation" for the frame. This determines
what happens when the user clicks the close box of the frame.
It is set here so that System.exit() will be called to end
the program when the user closes the window. */
setDefaultCloseOperation(EXIT_ON_CLOSE);
/* Set the size and location of the frame, and make it visible. */
setLocation(20,50);
setSize(550,420);
show();
class ShapeCanvas extends JPanel
implements ActionListener, MouseListener, MouseMotionListener {
// This class represents a "canvas" that can display colored shapes and
// let the user drag them around. It uses an off-screen images to
// make the dragging look as smooth as possible.
ArrayList shapes = new ArrayList();
// holds a list of the shapes that are displayed on the canvas
ShapeCanvas() {
// Constructor: set background color to white
// set up listeners to respond to mouse actions
setBackground(Color.white);
addMouseListener(this);
addMouseMotionListener(this);
public void paintComponent(Graphics g) {
// In the paint method, all the shapes in ArrayList are
// copied onto the canvas.
super.paintComponent(g); // First, fill with background color.
int top = shapes.size();
for (int i = 0; i < top; i++) {
Shape s = (Shape)shapes.get(i);
s.draw(g);
public void actionPerformed(ActionEvent evt) {
// Called to respond to action events from the
// menus or pop-up menu.
String command = evt.getActionCommand();
if (command.equals("Clear")) {
shapes.clear(); // Remove all items from the ArrayList
repaint();
else if (command.equals("Rectangle"))
addShape(new RectShape());
else if (command.equals("Oval"))
addShape(new OvalShape());
else if (command.equals("Round Rect"))
addShape(new RoundRectShape());
else if (command.equals("Red"))
setBackground(Color.red);
else if (command.equals("Green"))
setBackground(Color.green);
else if (command.equals("Blue"))
setBackground(Color.blue);
else if (command.equals("Cyan"))
setBackground(Color.cyan);
else if (command.equals("Magenta"))
setBackground(Color.magenta);
else if (command.equals("Yellow"))
setBackground(Color.yellow);
else if (command.equals("Black"))
setBackground(Color.black);
else if (command.equals("Gray"))
setBackground(Color.gray);
else if (command.equals("White"))
setBackground(Color.white);
else if (clickedShape != null) {
// Process a command from the pop-up menu.
if (command.equals("Delete Shape"))
shapes.remove(clickedShape);
else if (command.equals("Bring to Front")) {
shapes.remove(clickedShape);
shapes.add(clickedShape);
else if (command.equals("Make Large"))
clickedShape.setSize(100,60);
else if (command.equals("Make Small"))
clickedShape.setSize(50,30);
else if (command.equals("Add Black Border"))
clickedShape.setDrawOutline(true);
else if (command.equals("Remove Black Border"))
clickedShape.setDrawOutline(false);
else if (command.equals("Set Color to Red"))
clickedShape.setColor(Color.red);
else if (command.equals("Set Color to Green"))
clickedShape.setColor(Color.green);
else if (command.equals("Set Color to Blue"))
clickedShape.setColor(Color.blue);
else if (command.equals("Set Color to Cyan"))
clickedShape.setColor(Color.cyan);
else if (command.equals("Set Color to Magenta"))
clickedShape.setColor(Color.magenta);
else if (command.equals("Set Color to Yellow"))
clickedShape.setColor(Color.yellow);
else if (command.equals("Set Color to Black"))
clickedShape.setColor(Color.black);
else if (command.equals("Set Color to Gray"))
clickedShape.setColor(Color.gray);
else if (command.equals("Set Color to White"))
clickedShape.setColor(Color.white);
repaint();
} // end actionPerformed()
void addShape(Shape shape) {
// Add the shape to the canvas, and set its size, color
// and whether or not it should have a black border. These
// properties are determined by looking at the states of
// various menu items. The shape is added at the top-left
// corner of the canvas.
if (red.isSelected())
shape.setColor(Color.red);
else if (blue.isSelected())
shape.setColor(Color.blue);
else if (green.isSelected())
shape.setColor(Color.green);
else if (cyan.isSelected())
shape.setColor(Color.cyan);
else if (magenta.isSelected())
shape.setColor(Color.magenta);
else if (yellow.isSelected())
shape.setColor(Color.yellow);
else if (black.isSelected())
shape.setColor(Color.black);
else if (white.isSelected())
shape.setColor(Color.white);
else
shape.setColor(Color.gray);
shape.setDrawOutline( addBorderedShapes.isSelected() );
if (addLargeShapes.isSelected())
shape.reshape(3,3,100,60);
else
shape.reshape(3,3,50,30);
shapes.add(shape);
repaint();
} // end addShape()
// -------------------- This rest of this class implements dragging ----------------------
Shape clickedShape = null; // This is the shape that the user clicks on.
// It becomes the draggedShape is the user is
// dragging, unless the user is invoking a
// pop-up menu. This variable is used in
// actionPerformed() when a command from the
// pop-up menu is processed.
Shape draggedShape = null; // This is null unless a shape is being dragged.
// A non-null value is used as a signal that dragging
// is in progress, as well as indicating which shape
// is being dragged.
int prevDragX; // During dragging, these record the x and y coordinates of the
int prevDragY; // previous position of the mouse.
public void mousePressed(MouseEvent evt) {
// User has pressed the mouse. Find the shape that the user has clicked on, if
// any. If there is no shape at the position when the mouse was clicked, then
// ignore this event. If there is then one of three things will happen:
// If the event is a pop-up trigger, then the pop-up menu is displayed, and
// the user can select from the pop-up menu to edit the shape. If the user was
// holding down the shift key, then bring the clicked shape to the front, in
// front of all the other shapes. Otherwise, start dragging the shape.
if (draggedShape != null) {
// A drag operation is already in progress, so ignore this click.
// This might happen if the user clicks a second mouse button before
// releasing the first one(?).
return;
int x = evt.getX(); // x-coordinate of point where mouse was clicked
int y = evt.getY(); // y-coordinate of point
clickedShape = null; // This will be set to the clicked shape, if any.
for ( int i = shapes.size() - 1; i >= 0; i-- ) {
// Check shapes from front to back.
Shape s = (Shape)shapes.get(i);
if (s.containsPoint(x,y)) {
clickedShape = s;
break;
if (clickedShape == null) {
// The user did not click on a shape.
return;
else if (evt.isPopupTrigger()) {
// The user wants to see the pop-up menu
popup.show(this,x-10,y-2);
else if (evt.isShiftDown()) {
// Bring the clicked shape to the front
shapes.remove(clickedShape);
shapes.add(clickedShape);
repaint();
else {
// Start dragging the shape.
draggedShape = clickedShape;
prevDragX = x;
prevDragY = y;
public void mouseDragged(MouseEvent evt) {
// User has moved the mouse. Move the dragged shape by the same amount.
if (draggedShape == null) {
// User did not click a shape. There is nothing to do.
return;
int x = evt.getX();
int y = evt.getY();
draggedShape.moveBy(x - prevDragX, y - prevDragY);
prevDragX = x;
prevDragY = y;
repaint(); // redraw canvas to show shape in new position
public void mouseReleased(MouseEvent evt) {
// User has released the mouse. Move the dragged shape, and set
// draggedShape to null to indicate that dragging is over.
// If the shape lies completely outside the canvas, remove it
// from the list of shapes (since there is no way to ever move
// it back on screen). However, if the event is a popup trigger
// event, then show the popup menu instead.
if (draggedShape == null) {
// User did not click on a shape. There is nothing to do.
return;
int x = evt.getX();
int y = evt.getY();
if (evt.isPopupTrigger()) {
// Check whether the user is trying to pop up a menu.
// (This should be checked in both the mousePressed() and
// mouseReleased() methods.)
popup.show(this,x-10,y-2);
else {
draggedShape.moveBy(x - prevDragX, y - prevDragY);
if ( draggedShape.left >= getSize().width || draggedShape.top >= getSize().height ||
draggedShape.left + draggedShape.width < 0 ||
draggedShape.top + draggedShape.height < 0 ) { // shape is off-screen
shapes.remove(draggedShape); // remove shape from list of shapes
repaint();
draggedShape = null; // Dragging is finished.
public void mouseEntered(MouseEvent evt) { } // Other methods required for MouseListener and
public void mouseExited(MouseEvent evt) { } // MouseMotionListener interfaces.
public void mouseMoved(MouseEvent evt) { }
public void mouseClicked(MouseEvent evt) { }
} // end class ShapeCanvas
// ------- Nested class definitions for the abstract Shape class and three -----
// -------------------- concrete subclasses of Shape. --------------------------
static abstract class Shape {
// A class representing shapes that can be displayed on a ShapeCanvas.
// The subclasses of this class represent particular types of shapes.
// When a shape is first constructed, it has height and width zero
// and a default color of white.
int left, top; // Position of top left corner of rectangle that bounds this shape.
int width, height; // Size of the bounding rectangle.
Color color = Color.white; // Color of this shape.
boolean drawOutline; // If true, a black border is drawn on the shape
void reshape(int left, int top, int width, int height) {
// Set the position and size of this shape.
this.left = left;
this.top = top;
this.width = width;
this.height = height;
void setSize(int width, int height) {
// Set the size of this shape
this.width = width;
this.height = height;
void moveBy(int dx, int dy) {
// Move the shape by dx pixels horizontally and dy pixels vertically
// (by changing the position of the top-left corner of the shape).
left += dx;
top += dy;
void setColor(Color color) {
// Set the color of this shape
this.color = color;
void setDrawOutline(boolean draw) {
// If true, a black outline is drawn around this shape.
drawOutline = draw;
boolean containsPoint(int x, int y) {
// Check whether the shape contains the point (x,y).
// By default, this just checks whether (x,y) is inside the
// rectangle that bounds the shape. This method should be
// overridden by a subclass if the default behavior is not
// appropriate for the subclass.
if (x >= left && x < left+width && y >= top && y < top+height)
return true;
else
return false;
abstract void draw(Graphics g);
// Draw the shape in the graphics context g.
// This must be overridden in any concrete subclass.
} // end of class Shape
static class RectShape extends Shape {
// This class represents rectangle shapes.
void draw(Graphics g) {
g.setColor(color);
g.fillRect(left,top,width,height);
if (drawOutline) {
g.setColor(Color.black);
g.drawRect(left,top,width,height);
static class OvalShape extends Shape {
// This class represents oval shapes.
void draw(Graphics g) {
g.setColor(color);
g.fillOval(left,top,width,height);
if (drawOutline) {
g.setColor(Color.black);
g.drawOval(left,top,width,height);
boolean containsPoint(int x, int y) {
// Check whether (x,y) is inside this oval, using the
// mathematical equation of an ellipse.
double rx = width/2.0; // horizontal radius of ellipse
double ry = height/2.0; // vertical radius of ellipse
double cx = left + rx; // x-coord of center of ellipse
double cy = top + ry; // y-coord of center of ellipse
if ( (ry*(x-cx))*(ry*(x-cx)) + (rx*(y-cy))*(rx*(y-cy)) <= rx*rx*ry*ry )
return true;
else
return false;
static class RoundRectShape extends Shape {
// This class represents rectangle shapes with rounded corners.
// (Note that it uses the inherited version of the
// containsPoint(x,y) method, even though that is not perfectly
// accurate when (x,y) is near one of the corners.)
void draw(Graphics g) {
g.setColor(color);
g.fillRoundRect(left,top,width,height,width/3,height/3);
if (drawOutline) {
g.setColor(Color.black);
g.drawRoundRect(left,top,width,height,width/3,height/3);
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 400, Short.MAX_VALUE)
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 300, Short.MAX_VALUE)
pack();
}// </editor-fold>
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new ShapeDrawFrame().setVisible(true);
// Variables declaration - do not modify
// End of variables declaration
}Sure. In your original post, you had a sort of a design. The general idea was right. And then you asked us to implement it. Well, that's the wrong approach. You need to make the sort-of-a-design into a real design. Don't implement anything until you know what you are going to implement.
-
I can't see my shapes in Pages.
Hi all, first post so be gentle ! I'm using Pages for the first time hoping to get away from the hateful MS Word but I've run into my first problem. I have added shapes to the page but cannot see them. If I get ready to print then I can see them on the preview window and if I get lucky and click on one of them then the handles appear but otherwise I'm just staring at a blank page. Help !!!!!!!!
Thanks for the reply but that's not it. The shape has a border in black and fill in green and it's the only thing on the page.
It's strange that it appears on the print preview page but I can't see it on the page. Very frustrated as I'm trying to work on something when I have to arrange a number of shapes and it is impossible to do.........grrrrr.
OK, it's stranger than that. I added a shadow and that showed up and then changed the shape fill colour to a deep crimson and the shape shows up as a light blue ??
Then I put a photo on the page and it's all washed out colours as well.....but the opacity is at 100% which I had thought might be the problem. So it's as if Pages isn't displaying colours properly (but again does so perfectly when I go to print and it shows in the preview window)
Very strange -
Shape Tweening - simple tween doesn't work
I'm thoroughly discouraged with Flash CS3 for the trouble I'm
having with this simple shape tween. Please tell me it's my fault
so that I can get this to work and not think that Flash is dumb.
I'm going from a small circle with a 1 px stroke to a round
cornered rectangle with the same stroke. It looked like it spun a
little during the morph so I added shape hints. I tried a few
different arrangements and none of them really worked. The most
annoying thing is when it looks right no the FLA and then the
export is working correctly - obviously some kind of program
defect.
Shape hints:
- All four corners with A starting in the top left and
continuing around counter clockwise.
- All four sides with A starting on the left side and
continuing around counter clockwise.
- A on left side and B on right side.
They all either still spun funny or completely disappeared
during the morph.
All the hints appeared green and yellow for all arrangements
- no red hints.
In the past I've arranged them in what I would think to be a
random order with the hints appearing red and the dam thing would
actually work.
Just the fact that I have to screw around with shape hints
for this simple tween is silly.
Simple fix here?Thanks for reporting the issue. Please move the code in first
frame to frame 2 as a workaround. -
Question about Custom Shape Files from newbie to PS
My husband bought me PS CS4 Extended. That said, I have never used PS at all. I have always used PSP. Please don't hate me!
I have figured out that one loads actions and presets. OK, got that. The question I have is if I can have my Custom Shapes and Actions on a completely different partition? I ask this because there is not enough room on the partition for me to continue adding shapes and such to PS in the program itself. I am figuring that I can since I have tio load them into the program anyway, but am asking to be sure so that I don't screw anything up.
Another question I have is if I am able to point PS to where all of my plugins are that I already have installed in PSP, which also happen to be on a different partition. In PSP all one has to do is to point the program to where they are and all is good and they can be used within said program. Does PS allow for this also? If not, do I have to re-install all of the plugins into the PS program itself? I just don't have that much room on the partition that my PS resides on because of all of the other pregrams that I have. Also, does everything I load into PS just stay loaded or do I have to reload each time I want to use that particular preset?
I do hope that ya'll can understand my questions and thank you for any help in advance.the benefit of having the presets in the proper folders is that you can select them from the fly-out menus instead of having to search for them using the Load command so yes, you can have them wherever you want. I doubt though that you don't have enough disk space for them, for instance, all the actions that come with Photoshop take up about 200kb, the custom shapes are about 700kb but that's because they come in duplicates. And yes, all that you load up stays in Photoshop until you remove them, no need to reload them at program start. For plug-ins you have the option to set an additional plug-in folder by going to Edit->Preferences->Plug-ins, don't know about needing to install them though as i don't use any
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