working with dirty bit, and manual update

src/Main.java

@@ -10,6 +10,7 @@ public class Main {
         try{
             Window window = XAMLParser.parse("ui.xml");
             assert window != null;
+            window.revalidate();
             Button button = (Button)window.findByName("button1");
             window.addWindowListener(new WindowAdapter() {
                 @Override
@@ -17,7 +18,30 @@ public class Main {
                     window.dispose();
                 }
             });
-
+            long now;
+            long prev = 0;
+            while(true) {
+                now = System.currentTimeMillis();
+                if(now - prev >= 1000) {
+                    int x = button.getLocationX();
+                    int y = button.getLocationY();
+                    if(x + button.getWidth() >= window.getWidth()) {
+                        x = 0;
+                        if(y + button.getHeight() >= window.getHeight()) {
+                            y = 0;
+                        }
+                        else {
+                            y += 30;
+                        }
+                    }
+                    else {
+                        x += 30;
+                    }
+                    button.setLocation(x, y);
+                    prev = now;
+                    window.revalidate();
+                }
+            }
         }catch (Exception e){
             e.printStackTrace();
         }

src/guiTree/Button.java

@@ -1,6 +1,6 @@
 package guiTree;
 
-import guiTree.events.MouseListener;
+import guiTree.events.MouseAdapter;
 
 import java.awt.*;
 import java.awt.event.MouseEvent;
@@ -8,6 +8,7 @@ import java.awt.image.BufferedImage;
 
 public class Button extends Visual {
     private String label;
+    private Boolean pressed;
 
     public Button() {
         this("");
@@ -16,45 +17,17 @@ public class Button extends Visual {
     public Button(String label) {
         super();
         this.label = label;
-        this.addMouseListener(new MouseListener() {
-            @Override
-            public void mouseClicked(MouseEvent mouseEvent) {
-                if(getBackgroundColor() == Color.BLACK) {
-                    setBackgroundColor(Color.RED);
-                }
-                else {
-                    setBackgroundColor(Color.BLACK);
-                }
-            }
-
-            @Override
-            public void mouseReleased(MouseEvent mouseEvent) {
-
-            }
-
+        pressed = false;
+        this.addMouseListener(new MouseAdapter() {
             @Override
             public void mousePressed(MouseEvent mouseEvent) {
-
+                pressed = true;
+                revalidate();
             }
-
             @Override
-            public void mouseEntered(MouseEvent mouseEvent) {
-
-            }
-
-            @Override
-            public void mouseExited(MouseEvent mouseEvent) {
-
-            }
-
-            @Override
-            public void mouseDragged(MouseEvent mouseEvent) {
-
-            }
-
-            @Override
-            public void mouseMoved(MouseEvent mouseEvent) {
-
+            public void mouseReleased(MouseEvent mouseEvent) {
+                pressed = false;
+                revalidate();
             }
         });
     }
@@ -62,11 +35,32 @@ public class Button extends Visual {
     @Override
     public void paint(BufferedImage imageBuffer)
     {
-        Graphics g = imageBuffer.getGraphics();
+        //Get Graphics
+        Graphics2D g = imageBuffer.createGraphics();
+
+        //Set Transparency
+        g.setComposite(AlphaComposite.Clear);
+        g.fillRect(0, 0, getWidth(), getHeight());
+        g.setComposite(AlphaComposite.Src);
+
+        //Choose background
+        if(pressed) {
+            g.setColor(Color.GRAY);
+        }
+        else {
             g.setColor(this.getBackgroundColor());
+        }
+
+        //Draw Button
         g.fillRoundRect(0, 0, this.getWidth(), this.getHeight(), 50, 50);
         g.setColor(this.getForegroundColor());
-        g.drawString(this.label, this.getWidth()/2, this.getHeight()/2);
+
+        //Draw Label
+        int textWidth = g.getFontMetrics().stringWidth(label);
+        int textHeight = g.getFontMetrics().getHeight();
+        g.drawString(this.label, this.getWidth()/2 - textWidth/2, this.getHeight()/2 + textHeight/2);
+
+        g.dispose();
     }
 
     public void setLabel(String label) {

src/guiTree/CustomFrame.java

@@ -3,6 +3,7 @@ package guiTree;
 import guiTree.events.KeyEventGetter;
 import guiTree.events.MouseWheelGetter;
 
+import javax.swing.*;
 import javax.swing.event.MouseInputListener;
 import java.awt.*;
 import java.awt.event.KeyEvent;
@@ -10,7 +11,7 @@ import java.awt.event.KeyListener;
 import java.awt.event.MouseEvent;
 import java.awt.image.BufferedImage;
 
-public class CustomFrame extends Frame {
+public class CustomFrame extends JFrame {
     private BufferedImage imageBuffer;
     private Window parentWindow;
 

src/guiTree/Visual.java

@@ -34,6 +34,8 @@ public class Visual {
     private Color backgroundColor;
     private Color foregroundColor;
     private Boolean active;
+    private Boolean dirty;
+    private Boolean pressed;
 
 
     /*--------------------------------------------------------------------
@@ -48,71 +50,42 @@ public class Visual {
         this.backgroundColor = Color.WHITE;
         this.foregroundColor = Color.BLACK;
 
+        this.dirty = true;
         this.active = this instanceof Window;
     }
 
 
     /*--------------------------------------------------------------------
-                    Attributes Methods
+                    Attributes Setters
     ---------------------------------------------------------------------*/
 
-    public String getName() {
-        return name;
-    }
-
     public void setName(String name) {
         this.name = name;
     }
 
-    public int getWidth()
-    {
-        return this.width;
-    }
-
-    public int getHeight()
-    {
-        return this.height;
-    }
-
     public void setSize(Integer width, Integer height){
         this.width = width;
         this.height = height;
 
-        initializeImageBuffer(width, height);
+        initializeImageBuffer();
 
-        this.revalidate();
-    }
-
-    public int getLocationX(){
-        return this.locationX;
-    }
-
-    public int getLocationY(){
-        return this.locationY;
+        this.dirty = true;
     }
 
     public void setLocation(Integer x, Integer y){
         this.locationX = x;
         this.locationY = y;
-        this.revalidate();
-    }
-
-    public Color getBackgroundColor() {
-        return backgroundColor;
+        this.dirty = true;
     }
 
     public void setBackgroundColor(Color backgroundColor) {
         this.backgroundColor = backgroundColor;
-        this.revalidate();
-    }
-
-    public Color getForegroundColor() {
-        return foregroundColor;
+        this.dirty = true;
     }
 
     public void setForegroundColor(Color foregroundColor) {
         this.foregroundColor = foregroundColor;
-        this.revalidate();
+        this.dirty = true;
     }
 
     private void calculateInitialSize() {
@@ -133,6 +106,39 @@ public class Visual {
         }
     }
 
+    /*--------------------------------------------------------------------
+                    Attributes Getters
+    ---------------------------------------------------------------------*/
+
+    public String getName() {
+        return name;
+    }
+
+    public int getWidth()
+    {
+        return this.width;
+    }
+
+    public int getHeight()
+    {
+        return this.height;
+    }
+
+    public int getLocationX(){
+        return this.locationX;
+    }
+
+    public int getLocationY(){
+        return this.locationY;
+    }
+
+    public Color getBackgroundColor() {
+        return backgroundColor;
+    }
+
+    public Color getForegroundColor() {
+        return foregroundColor;
+    }
 
     /*--------------------------------------------------------------------
                             Tree Methods
@@ -159,10 +165,10 @@ public class Visual {
         child.setParent(this);
         child.calculateInitialLocation();
         child.calculateInitialSize();
-        child.imageBuffer = new BufferedImage(child.getWidth(), child.getHeight(), BufferedImage.TYPE_3BYTE_BGR);
 
-        child.active = true;
-        child.revalidate();
+        if(this.active) {
+            child.activate();
+        }
     }
 
     public void removeVisual(Visual child) {
@@ -171,8 +177,8 @@ public class Visual {
         child.setSize(0, 0);
         child.setLocation(0, 0);
         child.imageBuffer = null;
-        child.active = false;
-        revalidate();
+        child.deactivate();
+        this.dirty = true;
     }
 
     private void setParent(Visual parent)
@@ -189,28 +195,36 @@ public class Visual {
         this.parent.handleNotification();
     }
 
-    public void callRepaint()
-    {
-        this.paint(this.imageBuffer);
-        this.parent.revalidate();
+    private void repaint() {
+        this.paint(imageBuffer);
+        if(this.dirty) {
+            this.revalidate();
+            return;
+        }
+        for(Visual v: children) {
+            v.repaint();
+            imageBuffer.getGraphics().drawImage(v.imageBuffer, v.locationX, v.locationY, null);
+        }
     }
 
     public void revalidate() {
         if(!this.active){
             return;
         }
-        initializeImageBuffer(width, height);
+        clearImageBuffer();
         this.paint(imageBuffer);
         for (Visual v : children) {
+            v.repaint();
             this.imageBuffer.getGraphics().drawImage(v.imageBuffer, v.locationX, v.locationY, null);
         }
+        this.dirty = false;
         if(!(this instanceof Window)){
             this.parent.revalidate();
+            return;
         }
-        else{
         Window window = (Window)this;
-            window.setFrameImageBuffer(this.imageBuffer);
-        }
+        window.setFrameImageBuffer(imageBuffer);
+        window.repaint();
     }
 
     public void paint(BufferedImage imageBuffer) {
@@ -261,18 +275,19 @@ public class Visual {
             for(MouseListener mouseListener: mouseListeners) {
                 mouseListener.mouseClicked(mouseEvent);
             }
+            dirty = true;
         }
     }
 
     void mouseReleased(MouseEvent mouseEvent, int offsetX, int offsetY) {
         boolean front = true;
-        int mouseX = mouseEvent.getX() + offsetX;
-        int mouseY = mouseEvent.getY() + offsetY;
+        int mouseX = mouseEvent.getX() - offsetX;
+        int mouseY = mouseEvent.getY() - offsetY;
         for(Visual v: children) {
             if(mouseX > v.getLocationX() &&
-                    mouseY < v.getLocationY() &&
-                    mouseX < v.getWidth() &&
-                    mouseY > v.getHeight()) {
+                    mouseY > v.getLocationY() &&
+                    mouseX < v.getWidth() + v.getLocationX() &&
+                    mouseY < v.getHeight() + v.getLocationY()) {
                 front = false;
                 v.mouseReleased(mouseEvent, offsetX + v.locationX, offsetY + v.locationY);
             }
@@ -281,18 +296,19 @@ public class Visual {
             for(MouseListener mouseListener: mouseListeners) {
                 mouseListener.mouseReleased(mouseEvent);
             }
+            dirty = true;
         }
     }
 
     void mousePressed(MouseEvent mouseEvent, int offsetX, int offsetY) {
         boolean front = true;
-        int mouseX = mouseEvent.getX() + offsetX;
-        int mouseY = mouseEvent.getY() + offsetY;
+        int mouseX = mouseEvent.getX() - offsetX;
+        int mouseY = mouseEvent.getY() - offsetY;
         for(Visual v: children) {
             if(mouseX > v.getLocationX() &&
-                    mouseY < v.getLocationY() &&
-                    mouseX < v.getWidth() &&
-                    mouseY > v.getHeight()) {
+                    mouseY > v.getLocationY() &&
+                    mouseX < v.getWidth() + v.getLocationX() &&
+                    mouseY < v.getHeight() + v.getLocationY()) {
                 front = false;
                 v.mousePressed(mouseEvent, offsetX + v.locationX, offsetY + v.locationY);
             }
@@ -301,18 +317,19 @@ public class Visual {
             for(MouseListener mouseListener: mouseListeners) {
                 mouseListener.mousePressed(mouseEvent);
             }
+            dirty = true;
         }
     }
 
     void mouseEntered(MouseEvent mouseEvent, int offsetX, int offsetY) {
         boolean front = true;
-        int mouseX = mouseEvent.getX() + offsetX;
-        int mouseY = mouseEvent.getY() + offsetY;
+        int mouseX = mouseEvent.getX() - offsetX;
+        int mouseY = mouseEvent.getY() - offsetY;
         for(Visual v: children) {
             if(mouseX > v.getLocationX() &&
-                    mouseY < v.getLocationY() &&
-                    mouseX < v.getWidth() &&
-                    mouseY > v.getHeight()) {
+                    mouseY > v.getLocationY() &&
+                    mouseX < v.getWidth() + v.getLocationX() &&
+                    mouseY < v.getHeight() + v.getLocationY()){
                 front = false;
                 v.mouseEntered(mouseEvent, offsetX + v.locationX, offsetY + v.locationY);
             }
@@ -321,18 +338,19 @@ public class Visual {
             for(MouseListener mouseListener: mouseListeners) {
                 mouseListener.mouseEntered(mouseEvent);
             }
+            dirty = true;
         }
     }
 
     void mouseExited(MouseEvent mouseEvent, int offsetX, int offsetY) {
         boolean front = true;
-        int mouseX = mouseEvent.getX() + offsetX;
-        int mouseY = mouseEvent.getY() + offsetY;
+        int mouseX = mouseEvent.getX() - offsetX;
+        int mouseY = mouseEvent.getY() - offsetY;
         for(Visual v: children) {
             if(mouseX > v.getLocationX() &&
-                    mouseY < v.getLocationY() &&
-                    mouseX < v.getWidth() &&
-                    mouseY > v.getHeight()) {
+                    mouseY > v.getLocationY() &&
+                    mouseX < v.getWidth() + v.getLocationX() &&
+                    mouseY < v.getHeight() + v.getLocationY()) {
                 front = false;
                 v.mouseExited(mouseEvent, offsetX + v.locationX, offsetY + v.locationY);
             }
@@ -341,18 +359,19 @@ public class Visual {
             for(MouseListener mouseListener: mouseListeners) {
                 mouseListener.mouseExited(mouseEvent);
             }
+            dirty = true;
         }
     }
 
     void mouseDragged(MouseEvent mouseEvent, int offsetX, int offsetY) {
         boolean front = true;
-        int mouseX = mouseEvent.getX() + offsetX;
-        int mouseY = mouseEvent.getY() + offsetY;
+        int mouseX = mouseEvent.getX() - offsetX;
+        int mouseY = mouseEvent.getY() - offsetY;
         for(Visual v: children) {
             if(mouseX > v.getLocationX() &&
-                    mouseY < v.getLocationY() &&
-                    mouseX < v.getWidth() &&
-                    mouseY > v.getHeight()) {
+                    mouseY > v.getLocationY() &&
+                    mouseX < v.getWidth() + v.getLocationX() &&
+                    mouseY < v.getHeight() + v.getLocationY()) {
                 front = false;
                 v.mouseDragged(mouseEvent, offsetX + v.locationX, offsetY + v.locationY);
             }
@@ -361,38 +380,40 @@ public class Visual {
             for(MouseListener mouseListener: mouseListeners) {
                 mouseListener.mouseDragged(mouseEvent);
             }
+            dirty = true;
         }
     }
 
     void mouseMoved(MouseEvent mouseEvent, int offsetX, int offsetY) {
         boolean front = true;
-        int mouseX = mouseEvent.getX() + offsetX;
-        int mouseY = mouseEvent.getY() + offsetY;
+        int mouseX = mouseEvent.getX() - offsetX;
+        int mouseY = mouseEvent.getY() - offsetY;
         for(Visual v: children) {
             if(mouseX > v.getLocationX() &&
-                    mouseY < v.getLocationY() &&
-                    mouseX < v.getWidth() &&
-                    mouseY > v.getHeight()) {
+                    mouseY > v.getLocationY() &&
+                    mouseX < v.getWidth() + v.getLocationX() &&
+                    mouseY < v.getHeight() + v.getLocationY()) {
                 front = false;
-                v.mouseMoved(mouseEvent, offsetX + v.locationX, offsetY + locationY);
+                v.mouseMoved(mouseEvent, offsetX + v.locationX, offsetY + v.locationY);
             }
         }
         if(front) {
             for(MouseListener mouseListener: mouseListeners) {
                 mouseListener.mouseMoved(mouseEvent);
             }
+            dirty = true;
         }
     }
 
     void mouseWheelMoved(MouseWheelEvent mouseWheelEvent, int offsetX, int offsetY) {
         boolean front = true;
-        int mouseX = mouseWheelEvent.getX() + offsetX;
-        int mouseY = mouseWheelEvent.getY() + offsetY;
+        int mouseX = mouseWheelEvent.getX() - offsetX;
+        int mouseY = mouseWheelEvent.getY() - offsetY;
         for(Visual v: children) {
             if(mouseX > v.getLocationX() &&
-                    mouseY < v.getLocationY() &&
-                    mouseX < v.getWidth() &&
-                    mouseY > v.getHeight()) {
+                    mouseY > v.getLocationY() &&
+                    mouseX < v.getWidth() + v.getLocationX() &&
+                    mouseY < v.getHeight() + v.getLocationY()) {
                 front = false;
                 v.mouseWheelMoved(mouseWheelEvent, offsetX + v.locationX, offsetY + v.locationY);
             }
@@ -401,15 +422,39 @@ public class Visual {
             for(MouseWheelListener mouseWheelListener: mouseWheelListeners) {
                 mouseWheelListener.mouseWheelMoved(mouseWheelEvent);
             }
+            dirty = true;
         }
     }
 
     /*--------------------------------------------------------------------
                             Helper Methods
     ---------------------------------------------------------------------*/
-    private void initializeImageBuffer(Integer width, Integer height){
-        this.imageBuffer = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
-        this.imageBuffer.getGraphics().setColor(backgroundColor);
-        this.imageBuffer.getGraphics().fillRect(0, 0, width, height);
+    private void initializeImageBuffer(){
+        this.imageBuffer = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+        clearImageBuffer();
+    }
+
+    private void clearImageBuffer() {
+        Graphics g = this.imageBuffer.getGraphics();
+        g.setColor(backgroundColor);
+        g.fillRect(0, 0, width, height);
+        g.dispose();
+    }
+
+    private void activate() {
+        this.active = true;
+        this.imageBuffer = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+        for(Visual child: children) {
+            child.activate();
+        }
+        this.dirty = true;
+    }
+
+    private void deactivate() {
+        this.active = false;
+        this.imageBuffer = null;
+        for(Visual child: children) {
+            child.deactivate();
+        }
     }
 }

src/guiTree/Window.java

@@ -4,11 +4,9 @@ import java.awt.*;
 import java.awt.event.WindowListener;
 import java.awt.event.WindowStateListener;
 import java.awt.image.BufferedImage;
-import java.util.List;
 
 public class Window extends Visual {
     public CustomFrame frame;
-    private List<Visual> listenerList;
 
     public Window()
     {
@@ -25,7 +23,6 @@ public class Window extends Visual {
     {
         this.frame.setSize(width, height);
         super.setSize(width, height);
-        revalidate();
     }
 
     public void setFrameImageBuffer(BufferedImage imageBuffer){
@@ -33,6 +30,10 @@ public class Window extends Visual {
         this.frame.repaint();
     }
 
+    public void repaint() {
+        this.frame.repaint();
+    }
+
     public void setSize(Dimension dimension) {
         this.setSize(dimension.width, dimension.height);
     }
@@ -57,6 +58,10 @@ public class Window extends Visual {
         frame.dispose();
     }
 
+    public void repaint(long tm) {
+        frame.repaint(tm);
+    }
+
     public void setPositionRelativeTo(Component c){
         frame.setLocationRelativeTo(c);
     }
@@ -66,12 +71,4 @@ public class Window extends Visual {
     }
 
     public void setUndecorated(Boolean undecorated){frame.setUndecorated(undecorated);}
-
-    public void addListener(Visual listener) {
-        this.listenerList.add(listener);
-    }
-
-    public void removeListener(Visual listener) {
-        this.listenerList.remove(listener);
-    }
 }

src/guiTree/events/KeyAdapter.java

@@ -0,0 +1,20 @@
+package guiTree.events;
+
+import java.awt.event.KeyEvent;
+
+public abstract class KeyAdapter implements KeyListener{
+    @Override
+    public void keyTyped(KeyEvent keyEvent) {
+
+    }
+
+    @Override
+    public void keyPressed(KeyEvent keyEvent) {
+
+    }
+
+    @Override
+    public void keyReleased(KeyEvent keyEvent) {
+
+    }
+}

src/guiTree/events/MouseAdapter.java

@@ -0,0 +1,46 @@
+package guiTree.events;
+
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseWheelEvent;
+
+public abstract class MouseAdapter implements MouseListener, MouseWheelListener{
+    @Override
+    public void mouseClicked(MouseEvent mouseEvent) {
+
+    }
+
+    @Override
+    public void mouseReleased(MouseEvent mouseEvent) {
+
+    }
+
+    @Override
+    public void mousePressed(MouseEvent mouseEvent) {
+
+    }
+
+    @Override
+    public void mouseEntered(MouseEvent mouseEvent) {
+
+    }
+
+    @Override
+    public void mouseExited(MouseEvent mouseEvent) {
+
+    }
+
+    @Override
+    public void mouseDragged(MouseEvent mouseEvent) {
+
+    }
+
+    @Override
+    public void mouseMoved(MouseEvent mouseEvent) {
+
+    }
+
+    @Override
+    public void mouseWheelMoved(MouseWheelEvent mouseWheelEvent) {
+
+    }
+}