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@ -15,160 +15,195 @@
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import net.java.sip.communicator.util.swing.*;
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/**
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* Component allowing the user to easily clip an image
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* Component allowing the user to easily crop an image
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*
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* @author Damien Roth
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* @author Damian Minkov
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*/
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public class ImageClipper
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extends JComponent
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implements MouseListener, MouseMotionListener
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implements MouseListener,
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MouseMotionListener
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{
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private static final int CLIP_PANEL_WIDTH = 320;
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private static final int CLIP_PANEL_HEIGHT = 240;
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/**
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* Border of the image.
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*/
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private static final Color IMAGE_BORDER_COLOR
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= new Color(174, 189, 215);
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/**
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* Image overlay color.
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*/
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private static final Color IMAGE_OVERLAY_COLOR
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= new Color(1.0f, 1.0f, 1.0f, 0.4f);
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/**
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* The last remembered component width, to see when component is resized.
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*/
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private int lastComponentWidth = 0;
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/**
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* The last remembered component height, to see when component is resized.
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*/
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private int lastComponentHeight = 0;
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/**
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* The image that we will crop.
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*/
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private BufferedImage image = null;
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private Rectangle imageRect;
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private Point imageBottomRight;
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private Rectangle clippingZoneRect;
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private Point clippingZoneBottomRight;
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/**
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* The rectangle in which we are currently drawing the image.
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*/
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private Rectangle imageRect = new Rectangle();
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/**
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* The zone that we will crop later from the image.
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*/
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private Rectangle cropZoneRect;
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// Mouse drag vars
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/**
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* Used for mouse dragging.
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* This is every time the initial X coordinate of the mouse
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* and the coordinates are according the image.
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*/
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private int mouseStartX;
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/**
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* Used for mouse dragging.
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* This is every time the initial Y coordinate of the mouse
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* and the coordinates are according the image.
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*/
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private int mouseStartY;
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private int xInit;
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private int yInit;
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/**
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* Construct an new image clipper
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* Construct an new image cropper
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*
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* @param cropZoneWidth the width of the clip zone
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* @param cropZoneHeight the height of the clip zone
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* @param cropZoneWidth the width of the crop zone
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* @param cropZoneHeight the height of the crop zone
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*/
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public ImageClipper(int cropZoneWidth, int cropZoneHeight)
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{
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Dimension d = new Dimension(CLIP_PANEL_WIDTH, CLIP_PANEL_HEIGHT);
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this.cropZoneRect = new Rectangle(cropZoneWidth, cropZoneHeight);
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updateCropZone();
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Dimension d = new Dimension(320, 240);
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this.setSize(d);
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this.setMaximumSize(d);
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this.setMinimumSize(d);
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this.setPreferredSize(d);
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this.initClippingZone(cropZoneWidth, cropZoneHeight);
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this.imageRect = new Rectangle(this.clippingZoneRect.getLocation());
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this.imageBottomRight = new Point(0,0);
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this.addMouseListener(this);
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this.addMouseMotionListener(this);
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}
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/**
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* Compute static values of the clipping zone
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*
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* @param width the width of the clipping zone
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* @param height the height of the clipping zone
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* Compute static values of the cropping zone
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*/
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private void initClippingZone(int width, int height)
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private void updateCropZone()
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{
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this.clippingZoneRect = new Rectangle(width, height);
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this.clippingZoneRect.x = (CLIP_PANEL_WIDTH / 2) - (width / 2);
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this.clippingZoneRect.y = (CLIP_PANEL_HEIGHT / 2) - (height / 2);
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this.clippingZoneBottomRight = new Point(
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this.clippingZoneRect.x + this.clippingZoneRect.width,
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this.clippingZoneRect.y + this.clippingZoneRect.height
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);
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this.cropZoneRect.x =
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(this.getWidth() / 2) - (this.cropZoneRect.width / 2);
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this.cropZoneRect.y =
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(this.getHeight() / 2) - (this.cropZoneRect.height / 2);
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}
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/**
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* Defines the image to be clipped
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* Defines the image to be cropped
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*
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* @param image the image to be clipped
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* @param image the image to be cropped
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*/
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public void setImage(BufferedImage image)
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{
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boolean updated = false;
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this.image = image;
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this.imageRect.width = image.getWidth(this);
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this.imageRect.height = image.getHeight(this);
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// put the image in the center
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this.imageRect.x = (this.getWidth() - this.imageRect.width)/2;
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this.imageRect.y = (this.getHeight() - this.imageRect.height)/2;
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// set the initial values
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this.lastComponentHeight = this.getHeight();
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this.lastComponentWidth = this.getWidth();
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updateImagePoints();
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this.imageBottomRight.x = this.imageRect.x + this.imageRect.width;
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this.imageBottomRight.y = this.imageRect.y + this.imageRect.height;
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if (this.imageBottomRight.x < this.clippingZoneBottomRight.x)
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{
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this.imageRect.x +=
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this.clippingZoneBottomRight.x - this.imageBottomRight.x;
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updated = true;
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}
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if (this.imageBottomRight.y < this.clippingZoneBottomRight.y)
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this.repaint();
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}
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/**
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* Update image points if needed, when component is resized.
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*/
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private void updateImagePoints()
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{
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if(lastComponentWidth != this.getWidth())
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{
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this.imageRect.y +=
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this.clippingZoneBottomRight.y - this.imageBottomRight.y;
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updated = true;
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this.imageRect.x += (this.getWidth() - lastComponentWidth)/2;
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lastComponentWidth = this.getWidth();
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}
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if (updated)
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if(lastComponentHeight != this.getHeight())
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{
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this.imageBottomRight.x = this.imageRect.x + this.imageRect.width;
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this.imageBottomRight.y = this.imageRect.y + this.imageRect.height;
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this.imageRect.y += (this.getHeight() - lastComponentHeight)/2;
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lastComponentHeight = this.getHeight();
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}
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this.repaint();
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}
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/**
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* Returns the clipped area of the image
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* Returns the cropped area of the image
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*
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* @return the clipped area
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* @return the cropped area
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*/
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public Rectangle getClipping()
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public Rectangle getCroppedArea()
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{
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Rectangle clipping = new Rectangle();
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Rectangle croppedArea = new Rectangle();
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clipping.setSize(this.clippingZoneRect.getSize());
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clipping.x = this.clippingZoneRect.x - this.imageRect.x;
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clipping.y = this.clippingZoneRect.y - this.imageRect.y;
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croppedArea.setSize(this.cropZoneRect.getSize());
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croppedArea.x = this.cropZoneRect.x - this.imageRect.x;
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croppedArea.y = this.cropZoneRect.y - this.imageRect.y;
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return clipping;
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return croppedArea;
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}
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/**
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* Paint the component with the image we have and the settings
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* we have for it.
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* @param g the graphics to draw.
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*/
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@Override
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protected void paintComponent(Graphics g)
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{
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super.paintComponent(g);
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g = g.create();
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AntialiasingManager.activateAntialiasing(g);
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// Draw image
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updateImagePoints();
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g.drawImage(this.image, this.imageRect.x, this.imageRect.y,
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this.imageRect.width, this.imageRect.height, this);
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// Select rect
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updateCropZone();
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g.setColor(Color.BLACK);
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g.drawRect(this.cropZoneRect.x, this.cropZoneRect.y,
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this.cropZoneRect.width, this.cropZoneRect.height);
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// Image overlay
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drawImageOverlay(g);
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// Image border
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g.setColor(ImageClipper.IMAGE_BORDER_COLOR);
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g.setColor(IMAGE_BORDER_COLOR);
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g.drawRoundRect(this.imageRect.x-2, this.imageRect.y-2,
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this.imageRect.width+3, this.imageRect.height+3, 2, 2);
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g.drawRoundRect(this.imageRect.x-1, this.imageRect.y-1,
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this.imageRect.width+1, this.imageRect.height+1, 2, 2);
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// Select rect
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g.setColor(Color.BLACK);
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g.drawRect(this.clippingZoneRect.x, this.clippingZoneRect.y,
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this.clippingZoneRect.width, this.clippingZoneRect.height);
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}
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/**
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* Draw an overlay over the parts of the images which are not in the clip zone
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* Draw an overlay over the parts of the images
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* which are not in the crop zone
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*
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* @param g the Graphics used to draw
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*/
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@ -176,67 +211,116 @@ private void drawImageOverlay(Graphics g)
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{
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int width, height;
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g.setColor(ImageClipper.IMAGE_OVERLAY_COLOR);
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width = this.clippingZoneRect.x - this.imageRect.x;
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g.setColor(IMAGE_OVERLAY_COLOR);
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// left vertical non cropped part
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width = this.cropZoneRect.x - this.imageRect.x;
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if (width > 0)
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{
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g.fillRect(this.imageRect.x, this.imageRect.y,
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width, this.imageRect.height);
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}
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// right vertical non cropped
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width = this.imageRect.x + this.imageRect.width
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- this.clippingZoneBottomRight.x;
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- (this.cropZoneRect.x + this.cropZoneRect.width);
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if (width > 0)
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g.fillRect(this.clippingZoneBottomRight.x, this.imageRect.y,
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width, this.imageRect.height);
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// Top
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height = this.clippingZoneRect.y - this.imageRect.y;
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{
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g.fillRect(
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this.cropZoneRect.x + this.cropZoneRect.width,
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this.imageRect.y,
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width,
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this.imageRect.height);
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}
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// Top horizontal non croppped part
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height = this.cropZoneRect.y - this.imageRect.y;
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if (height > 0)
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g.fillRect(this.clippingZoneRect.x, this.imageRect.y,
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this.clippingZoneRect.width, height);
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// Bottom
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{
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g.fillRect(this.cropZoneRect.x, this.imageRect.y,
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this.cropZoneRect.width, height);
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}
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// Bottom horizontal non croppped part
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height = (this.imageRect.y + this.imageRect.height)
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- (this.clippingZoneBottomRight.y);
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- (this.cropZoneRect.y + this.cropZoneRect.height);
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if (height > 0)
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g.fillRect(this.clippingZoneRect.x, this.clippingZoneBottomRight.y,
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this.clippingZoneRect.width, height);
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{
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g.fillRect(
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this.cropZoneRect.x,
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this.cropZoneRect.y + this.cropZoneRect.height,
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this.cropZoneRect.width,
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height);
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}
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}
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/**
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* Start image cropping action.
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* @param e the mouse event, initial clicking.
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*/
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public void mousePressed(MouseEvent e)
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{
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// Init the dragging
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mouseStartX = e.getX();
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mouseStartY = e.getY();
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xInit = this.imageRect.x;
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yInit = this.imageRect.y;
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}
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/**
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* Event that user is dragging the mouse.
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* @param e the mouse event.
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*/
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public void mouseDragged(MouseEvent e)
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{
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// New position of the image
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int xpos = xInit + (e.getX() - mouseStartX);
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int ypos = yInit + (e.getY() - mouseStartY);
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// Checks if the image doesn't go out of the clip zone
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if (xpos <= this.clippingZoneRect.x && xpos
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+ this.imageRect.width > this.clippingZoneBottomRight.x)
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this.imageRect.x = xpos;
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if (ypos <= this.clippingZoneRect.y && ypos
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+ this.imageRect.height > this.clippingZoneBottomRight.y)
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this.imageRect.y = ypos;
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int newXpos = this.imageRect.x + e.getX() - mouseStartX;
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int newYpos = this.imageRect.y + e.getY() - mouseStartY;
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if(newXpos <= cropZoneRect.x
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&& newXpos + imageRect.width
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>= cropZoneRect.x + cropZoneRect.width)
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{
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this.imageRect.x = newXpos;
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mouseStartX = e.getX();
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}
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if(newYpos < cropZoneRect.y
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&& newYpos + imageRect.height
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>= cropZoneRect.y + cropZoneRect.height)
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{
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this.imageRect.y = newYpos;
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mouseStartY = e.getY();
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}
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this.repaint();
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}
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/**
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* Not used.
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* @param e
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*/
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public void mouseClicked(MouseEvent e) {}
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/**
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* Not used.
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* @param e
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*/
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public void mouseEntered(MouseEvent e) {}
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/**
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* Not used.
|
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|
* @param e
|
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|
*/
|
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|
public void mouseExited(MouseEvent e) {}
|
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/**
|
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|
* Not used.
|
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|
|
* @param e
|
|
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|
|
*/
|
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|
|
public void mouseReleased(MouseEvent e) {}
|
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|
|
/**
|
|
|
|
|
* Not used.
|
|
|
|
|
* @param e
|
|
|
|
|
*/
|
|
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|
|
public void mouseMoved(MouseEvent e) {}
|
|
|
|
|
}
|
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|
Damian Minkov
15 years ago
