I have JLabels in a constrained space (JTable) and when the text inside the label is too long, it's truncated. Is there a way to make the text fit in the allotted space by only horizontal squishing?
See the upper Jlabel in these examples:
The text is HTML formatted so I can't just drawstring on a custom JPanel component myself. There's no icon.
Since I've solved this question while typing it, in accordance with meta I'll share the answer.
I set this as the UI for the JLabel:
It renders the text to an off-screen image, then resizes that image to the JLabel's proportions.
[Edit] This doesn't work correctly with transparent labels or labels with empty HTML text.
// Copied and modified from BasicLabelUI
private static class SquishLabelUI extends BasicLabelUI {
private final Rectangle paintIconR = new Rectangle();
private final Rectangle paintTextR = new Rectangle();
private String layout(JLabel label, FontMetrics fm, int width, int height) {
Insets insets = label.getInsets(null);
String text = label.getText();
Rectangle paintViewR = new Rectangle(insets.left,
insets.top,
width - (insets.left + insets.right),
height - (insets.top + insets.bottom));
paintIconR.setBounds(0, 0, 0, 0);
paintTextR.setBounds(0, 0, 0, 0);
return layoutCL(label, fm, text, null, paintViewR, paintIconR, paintTextR);
}
#Override
public void paint(Graphics g, JComponent c) {
JLabel label = (JLabel)c;
layout(label, SwingUtilities2.getFontMetrics(label, g), c.getWidth(), c.getHeight());
View v = (View)c.getClientProperty(BasicHTML.propertyKey);
Dimension size = getPreferredSize(label);
BufferedImage img = label.getGraphicsConfiguration()
.createCompatibleImage(size.width, size.height, TRANSLUCENT);
Graphics2D g2 = img.createGraphics();
try {
g2.setColor(label.getBackground());
g2.setClip(0, 0, size.width, size.height);
g2.fillRect(0, 0, size.width, size.height);
v.paint(g2, new Rectangle(0, 0, size.width, size.height));
int renderWidth = Math.min(size.width, paintTextR.width);
Image img2 = img.getScaledInstance(renderWidth, paintTextR.height, Image.SCALE_SMOOTH);
g.drawImage(img2, paintTextR.x, paintTextR.y, null);
} finally {
g2.dispose();
}
}
}
Related
i want to add additional space in images, lets call it "span".
My code is:
BufferedImage newImage = new BufferedImage(image2.getWidth(), image2.getHeight()+200, image2.getType());
Graphics g = newImage.getGraphics();
g.setColor(Color.white);
g.fillRect(0,0,image.getWidth(),image.getHeight()+100);
g.drawImage(image, 0, 100, null);
g.setColor(Color.white);
g.dispose();
RenderedImage rendImage = newImage;
String newUrl8006002 = splitUrl[0]+"-800x6002.jpg";
File file = new File(newUrl8006002);
ImageIO.write(rendImage, "jpg", file);
The problem is, that image at the bottom has black background and i expect white (at the top is white).
Do you know what to change to add white background in whole image?
How about this:
static BufferedImage growY(BufferedImage im, int span, Color color)
{
BufferedImage newImage = new BufferedImage(im.getWidth(), im.getHeight()+span, im.getType());
int topSpan = span/2;
int botSpan = span - topSpan;
Graphics g = newImage.getGraphics();
g.setColor(color);
g.fillRect(0, 0, newImage.getWidth(), topSpan);
g.fillRect(0, topSpan+im.getHeight(), newImage.getWidth(), botSpan);
g.drawImage(im, 0, topSpan, null);
g.dispose();
return newImage;
}
I have a JPanel that i want to clip the corners so that it has rounded edge.
Here is what i am doing.
((Graphics2D)g).setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);
g.setColor(color);
Shape s = new RoundRectangle2D.Double(0, 0, width, height, arc, arc);
g.setClip(s);
So notice that i am setting the clipping to a RoundRectangle2D. Also i am setting anti-aliasing still my rounded edges are really jagged.
Soft clipping example this link has a way to do soft rounded edges for a image. How do i apply the same to a JPanel?
because clipping is not aliased, you see the jagged edges. try a border instead:
p.setBorder(new RoundedBorder(p.getBackground(), 2, 16));
where RoundedBorder is adapted from the text bubble class:
class RoundedBorder extends AbstractBorder {
private Color color;
private int thickness = 4;
private int radii = 8;
private Insets insets = null;
private BasicStroke stroke = null;
private int strokePad;
private int pointerPad = 4;
RenderingHints hints;
RoundedBorder(
Color color, int thickness, int radii) {
this.thickness = thickness;
this.radii = radii;
this.color = color;
stroke = new BasicStroke(thickness);
strokePad = thickness / 2;
hints = new RenderingHints(
RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
int pad = radii + strokePad;
int bottomPad = pad + strokePad;
insets = new Insets(pad, pad, bottomPad, pad);
}
#Override
public Insets getBorderInsets(Component c) {
return insets;
}
#Override
public Insets getBorderInsets(Component c, Insets insets) {
return getBorderInsets(c);
}
#Override
public void paintBorder(
Component c,
Graphics g,
int x, int y,
int width, int height) {
Graphics2D g2 = (Graphics2D) g;
int bottomLineY = height - thickness;
RoundRectangle2D.Double bubble = new RoundRectangle2D.Double(
0 + strokePad,
0 + strokePad,
width - thickness,
bottomLineY,
radii,
radii);
Area area = new Area(bubble);
g2.setRenderingHints(hints);
Area spareSpace = new Area(new Rectangle(0, 0, width, height));
spareSpace.subtract(area);
g2.setClip(spareSpace);
g2.clearRect(0, 0, width, height);
g2.setClip(null);
g2.setColor(color);
g2.setStroke(stroke);
g2.draw(area);
}
}
}
If you want anti-aliased corners, use TexturePaint instead of clipping. It is the same as clipping, only faster. Use it with anti-alias on.
Just Google "TexturePaint examples".
I'm trying to paint a JLabel to a BufferedImage using html as text but it always prints the text in the middle (vertically), and cuts off the text on the right.
Here is my code:
public static void test() throws IOException
{
int width = 100;
JLabel label = new JLabel();
label.setText("<html><body><p>asdf asdfasdf asdfsdf asdfasdf asdfasdf asdfasdfasdfasdf asdfasdfasdfa sdfasd fasdf asdfasdf asdfasdf asdfasdfasdfa sdfasdf</p></body></html>");
Dimension size = getPreferredSize(label.getText(), true, width);
label.setSize(size);
BufferedImage image =
new BufferedImage(
label.getWidth(),
label.getHeight(),
BufferedImage.TYPE_INT_RGB);
Graphics g = image.getGraphics();
g.setColor(Color.LIGHT_GRAY);
g.fillRect(0, 0, 500, 900);
label.paint(g);
ImageIO.write(image, "png", new File("testImage.png"));
}
private static final JLabel resizer = new JLabel();
public static java.awt.Dimension getPreferredSize(
String html,
boolean width,
int prefSize)
{
resizer.setText(html);
View view =
(View) resizer
.getClientProperty(javax.swing.plaf.basic.BasicHTML.propertyKey);
view.setSize(width ? prefSize : 0, width ? 0 : prefSize);
float w = view.getPreferredSpan(View.X_AXIS);
float h = view.getPreferredSpan(View.Y_AXIS);
return new java.awt.Dimension((int) Math.ceil(w), (int) Math.ceil(h));
}
And here is the resulting image:
I think the html word wrapping is handled by something in the swing thread loop, if you are doing this form that loop as a actionlistener then it can't recalculate the html
I am dragging and dropping the jTable cell from one jTable to another jTable.For Now it is showing me default drag drop icon.
I am using TransferHandler class to implement this.
I Override getDragImage(image) to put my customize image But it is not working.
This way i implemented my code Implementation
I tried this code into this method.
File newFile = new File("./dragImage.jpeg");
Font font = new Font("Tahoma", Font.PLAIN, 11);
FontRenderContext frc = new FontRenderContext(null, true, true);
Rectangle2D bounds = font.getStringBounds(l_value, frc);
int w = (int) bounds.getWidth();
int h = (int) bounds.getHeight();
BufferedImage image = new BufferedImage(10,10, BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
g.setColor(Color.WHITE);
g.fillRect(0, 0, 10, 10);
g.setColor(Color.BLACK);
g.setFont(font);
g.drawString(l_value, (float) bounds.getX(), (float) -bounds.getY());
g.dispose();
return image;
This code is working in my main method but here in this function it is not working.
I've got a full-screen JFrame and I'd like to create an background for it by filling a JLabel with an image and matching it's size to the dimension of the screen.
Whilst I can create a JLabel that matches the screen's size I can't seem to resize my image to fit. In essence, I want to end up with a full-screen JFrame that is completely filled with an image (regardless of the image's or the screen's dimensions).
Current code is below, thanks!
public void addBackground(ImageIcon imgIcon) {
Image img = imgIcon.getImage();
BufferedImage buffImg = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_ARGB);
BufferedImage resizeBuffImg = resize(buffImg, screenSize.width, screenSize.height);
Image finalImg = Toolkit.getDefaultToolkit().createImage(resizeBuffImg.getSource());
ImageIcon back = new ImageIcon(finalImg);
System.out.println("IMAGE WIDTH: " + back.getIconWidth());
System.out.println("IMAGE HEIGHT: " + back.getIconHeight());
JLabel backgroundLabel = new JLabel(back);
getContentPane().add(backgroundLabel);
}
public BufferedImage resize(BufferedImage image, int width, int height) {
int type = image.getType() == 0? BufferedImage.TYPE_INT_ARGB : image.getType();
BufferedImage resizedImage = new BufferedImage(width, height, type);
Graphics2D g = resizedImage.createGraphics();
g.setComposite(AlphaComposite.Src);
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g.setRenderingHint(RenderingHints.KEY_RENDERING,
RenderingHints.VALUE_RENDER_QUALITY);
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g.drawImage(image, 0, 0, width, height, null);
g.dispose();
return resizedImage;
}
EDIT - Got it! Using Image's getScaledInstance() works. It's not perfect, but I'm intending to scale down large images rather than expand smaller ones.