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Demo: add info label shows the current system/user scale factor and the java version

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Karl Tauber
2019-09-07 23:48:24 +02:00
parent 70d3b7c443
commit c69e9e12c6
4 changed files with 42 additions and 1 deletions
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11
flatlaf-core/src/main/java/com/formdev/flatlaf/util/UIScale.java
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@@ -19,6 +19,7 @@ package com.formdev.flatlaf.util;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsEnvironment;
import java.awt.Insets;
import java.beans.PropertyChangeEvent;
@@ -42,6 +43,7 @@ import javax.swing.plaf.UIResource;
* So the JRE does the scaling itself.
* E.g. when you draw a 10px line, a 15px line is drawn on screen.
* The scale factor may be different for each connected display.
* The scale factor may change for a window when moving the window from one display to another one.
*
* 2) user scaling mode
*
@@ -51,6 +53,7 @@ import javax.swing.plaf.UIResource;
* The JRE does not scale anything.
* So we have to invoke {@link #scale(float)} where necessary.
* There is only one user scale factor for all displays.
* The user scale factor may change if the active LaF or "Label.font" has changed.
*
* @author Karl Tauber
*/
@@ -89,6 +92,14 @@ public class UIScale
return jreHiDPI;
}
public static double getSystemScaleFactor( Graphics2D g ) {
return isJreHiDPIEnabled() ? g.getDeviceConfiguration().getDefaultTransform().getScaleX() : 1;
}
public static double getSystemScaleFactor( GraphicsConfiguration gc ) {
return isJreHiDPIEnabled() ? gc.getDefaultTransform().getScaleX() : 1;
}
//---- user scaling (Java 8) ----------------------------------------------
private static float scaleFactor = 1;