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
   8 import net.haspamelodica.swt.helper.gcs.GeneralGC;
   9 import net.mograsim.preferences.ColorDefinition;
  10 import net.mograsim.preferences.ColorManager;
  11
  12 public class ColorHelper
  13 {
  14         public static void executeWithDifferentForeground(GeneralGC gc, ColorDefinition col, Runnable exec)
  15         {
  16                 executeWithDifferentColor(col, gc::getForeground, gc::setForeground, exec);
  17         }
  18
  19         public static void executeWithDifferentBackground(GeneralGC gc, ColorDefinition col, Runnable exec)
  20         {
  21                 executeWithDifferentColor(col, gc::getBackground, gc::setBackground, exec);
  22         }
  23
  24         private static void executeWithDifferentColor(ColorDefinition col, Supplier<Color> getColor, Consumer<Color> setColor, Runnable exec)
  25         {
  26                 if (col == null)
  27                         exec.run();
  28                 else
  29                 {
  30                         ColorManager cm = ColorManager.current();
  31                         Color oldColor = getColor.get();
  32                         Color newColor = cm.toColor(col);
  33                         setColor.accept(newColor);
  34                         exec.run();
  35                         setColor.accept(oldColor);
  36                 }
  37         }
  38
  39         private ColorHelper()
  40         {
  41                 throw new UnsupportedOperationException("No instances of ColorHelper");
  42         }
  43 }