TextSharpEditorFactoryListener.java

package com.gchakhidze.textsharpidea;

import com.intellij.injected.editor.DocumentWindow;
import com.intellij.openapi.editor.event.EditorFactoryEvent;
import com.intellij.util.ui.GraphicsUtil;
import org.jetbrains.annotations.NotNull;

import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;

public class TextSharpEditorFactoryListener
    implements com.intellij.openapi.editor.event.EditorFactoryListener
{
    @Override
    public void editorCreated(@NotNull EditorFactoryEvent editorFactoryEvent) {
        // Grab text area component of the editor window:
        Graphics graphics = GraphicsUtil.safelyGetGraphics(editorFactoryEvent.getEditor().getContentComponent());
        if (graphics instanceof Graphics2D) {
            // FAIL: `graphics' is not an instance of Graphics2D
            Graphics2D graphics2D = (Graphics2D) graphics;
            graphics2D.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
            graphics2D.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB);

            System.out.println("SUCCESS: Changed editor graphics rendering hints.");
        } else {
            System.err.println("WARNING: Editor graphics is not Graphics2D.");
        }
    }

    @Override
    public void editorReleased(@NotNull EditorFactoryEvent editorFactoryEvent) {
    }
}