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Added getting font height utils to SwingUtil

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This commit is contained in:
nathan 2017-03-10 17:03:52 +01:00
parent 311fad500d
commit fe9c43c02b
1 changed files with 153 additions and 3 deletions
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156
src/dorkbox/util/SwingUtil.java
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@ -15,6 +15,7 @@
*/
package dorkbox.util;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Desktop;
@ -30,6 +31,7 @@ import java.awt.Image;
import java.awt.MouseInfo;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.Toolkit;
import java.awt.Window;
import java.awt.event.HierarchyEvent;
@ -47,6 +49,8 @@ import java.net.URL;
import java.util.Enumeration;
import java.util.Locale;
import javax.swing.AbstractButton;
import javax.swing.ImageIcon;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
@ -105,6 +109,39 @@ class SwingUtil {
}
}
// display all properties for the specified look and feel
// Set<Map.Entry<Object, Object>> entries = UIManager.getLookAndFeelDefaults()
// .entrySet();
// for (Map.Entry<Object, Object> e : entries) {
// String key;
//
//
// if (e.getKey() instanceof StringBuffer) {
// StringBuffer s = (StringBuffer) e.getKey();
// key = s.toString();
// }
// else {
// key = (String) e.getKey();
// }
//
// //Print all the keys available in UI manager
// if (e.getValue() != null && (key.toLowerCase().contains("icon") || key.toLowerCase().contains("image"))) {
// System.out.println("Key: " + key);
// }
//
// if (key.endsWith("TabbedPane.font")) {
// Font font = UIManager.getFont(key);
// Font biggerFont = font.deriveFont(2 * font.getSize2D());
// // change ui default to bigger font
// UIManager.put(key, biggerFont);
// }
// else if (key.endsWith("Tree.rowHeight")) {
// int rowHeight = UIManager.getInt(key);
// int bigRowHeight = 2 * rowHeight;
// UIManager.put(key, bigRowHeight);
// }
// }
// this means we couldn't find our L&F
new Exception("Could not load " + lookAndFeel + ", it was not available.").printStackTrace();
}
@ -256,12 +293,14 @@ class SwingUtil {
/**
* Gets the correct font (in GENERAL) for a specified pixel height.
*
* @param font the font we are checking
* @param height the height in pixels we want to get as close as possible to
*
* @return the font (derived from the specified font) that is as close as possible to the requested height
* @return the font (derived from the specified font) that is as close as possible to the requested height. If our font-size is less
* than the height, then the approach is from the low size (so the returned font will always fit inside the box)
*/
private static
public static
Font getFontForSpecificHeight(final Font font, final int height) {
int size = font.getSize();
Boolean lastAction = null;
@ -273,7 +312,7 @@ class SwingUtil {
FontMetrics metrics = g.getFontMetrics(fontCheck);
Rectangle2D rect = metrics.getStringBounds("`Tj|┃", g); // `Tj|┃ are glyphs that are at the top/bottom of the fontset (usually)
int testHeight = (int) rect.getHeight();
double testHeight = rect.getHeight();
if (testHeight < height && lastAction != Boolean.FALSE) {
size++;
@ -283,11 +322,122 @@ class SwingUtil {
lastAction = Boolean.FALSE;
} else {
// either we are the exact size, or we are ONE font size to big/small (depending on what our initial guess was)
g.dispose();
return fontCheck;
}
}
}
/**
* Gets the specified font height
* @param font
* @return
*/
public static
int getFontHeight(final Font font) {
// Because font metrics is based on a graphics context, we need to create a small, temporary image to determine the width and height
BufferedImage image = new BufferedImage(1, 1, BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
FontMetrics metrics = g.getFontMetrics(font);
Rectangle2D rect = metrics.getStringBounds("`Tj|┃", g); // `Tj|┃ are glyphs that are at the top/bottom of the fontset (usually)
int testHeight = (int) rect.getHeight();
g.dispose();
return testHeight;
}
/**
* Gets the specified text (with a font) and as an image
* @param font
* @return
*/
public static
BufferedImage getFontAsImage(final Font font, String text, Color foregroundColor) {
// Because font metrics is based on a graphics context, we need to create a small, temporary image to determine the width and height
BufferedImage img = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
Graphics2D g2d = img.createGraphics();
g2d.setFont(font);
FontMetrics fm = g2d.getFontMetrics();
int width = fm.stringWidth(text);
int height = fm.getHeight();
g2d.dispose();
// make it square
if (width > height) {
height = width;
} else {
width = height;
}
img = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
g2d = img.createGraphics();
g2d.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_QUALITY);
g2d.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_ENABLE);
g2d.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE);
g2d.setFont(font);
fm = g2d.getFontMetrics();
g2d.setColor(foregroundColor);
// width/4 centers the text in the image
g2d.drawString(text, width/4, fm.getAscent());
g2d.dispose();
return img;
}
/**
* Gets the largest icon/image for a button (or other JComponent that has .setIcon(image) method) without affecting the size of the
* button. An image that is any larger will require that the button increases it's height or width.
*
* @param button The button (or JMenuItem, etc that has the .setIcon() method ) that you want to measure
*
* @return the largest height of an icon before the button will increase in size (as a result of a larger image)
*/
public static
int getLargestIconHeightForButton(AbstractButton button) {
// of note, components can ALSO have different sizes attached to them!
// mini
// myButton.putClientProperty("JComponent.sizeVariant", "mini");
// small
// mySlider.putClientProperty("JComponent.sizeVariant", "small");
// large
// myTextField.putClientProperty("JComponent.sizeVariant", "large");
int minHeight = 0;
int iconSize = 0;
for (int i = 1; i < 128; i++) {
ImageIcon imageIcon = new ImageIcon(new BufferedImage(1, i, BufferedImage.TYPE_BYTE_BINARY));
button.setIcon(imageIcon);
button.invalidate();
int height = (int) button.getPreferredSize()
.getHeight();
if (minHeight == 0) {
minHeight = height;
} else if (minHeight != height) {
break;
}
// this is the largest icon size before the size of the component changes
iconSize = imageIcon.getIconHeight();
}
return iconSize;
}
/**
* Centers a component according to the window location.
*