net.mograsim.logic.ui/src/net/mograsim/logic/ui/ColorHelper.java

   1 package net.mograsim.logic.ui;
   2
   3 import java.util.function.Consumer;
   4 import java.util.function.Supplier;
   5
   6 import org.eclipse.swt.graphics.Color;
   7 import org.eclipse.swt.graphics.Device;
   8
   9 import net.haspamelodica.swt.helper.gcs.GeneralGC;
  10 import net.mograsim.preferences.ColorDefinition;
  11 import net.mograsim.preferences.ColorManager;
  12
  13 public class ColorHelper
  14 {
  15         public static void executeWithDifferentForeground(GeneralGC gc, ColorDefinition col, Runnable exec)
  16         {
  17                 executeWithDifferentColor(gc.getDevice(), col, gc::getForeground, gc::setForeground, exec);
  18         }
  19
  20         public static void executeWithDifferentBackground(GeneralGC gc, ColorDefinition col, Runnable exec)
  21         {
  22                 executeWithDifferentColor(gc.getDevice(), col, gc::getBackground, gc::setBackground, exec);
  23         }
  24
  25         private static void executeWithDifferentColor(Device device, ColorDefinition col, Supplier<Color> getColor, Consumer<Color> setColor,
  26                         Runnable exec)
  27         {
  28                 ColorManager cm = ColorManager.current();
  29                 Color oldColor = getColor.get();
  30                 Color newColor = cm.toColor(device, col);
  31                 setColor.accept(newColor);
  32                 exec.run();
  33                 setColor.accept(oldColor);
  34                 cm.dispose(newColor);
  35         }
  36
  37         private ColorHelper()
  38         {
  39                 throw new UnsupportedOperationException("No instances of ColorHelper");
  40         }
  41 }