Create TextView lib component

api/src/main/java/com/bartlomiejpluta/base/lib/gui/TextView.java

@@ -0,0 +1,191 @@
+package com.bartlomiejpluta.base.lib.gui;
+
+import com.bartlomiejpluta.base.api.context.Context;
+import com.bartlomiejpluta.base.api.gui.*;
+import com.bartlomiejpluta.base.api.input.Key;
+import com.bartlomiejpluta.base.api.input.KeyAction;
+import com.bartlomiejpluta.base.api.input.KeyEvent;
+import com.bartlomiejpluta.base.api.screen.Screen;
+import lombok.NonNull;
+
+import java.util.Map;
+
+import static java.util.Objects.requireNonNull;
+
+public class TextView extends BaseComponent {
+   private final float[] bounds = new float[4];
+   private String text = "";
+   private String font;
+   private float fontSize;
+   private int alignment = GUI.ALIGN_LEFT;
+   private final Color color;
+
+   private float targetScroll = 0;
+   private float actualScroll = 0;
+
+   public TextView(Context context, GUI gui, Map<String, Component> refs) {
+      super(context, gui, refs);
+      this.color = gui.createColor();
+      this.color.setRGBA(0xFFFFFFFF);
+      addEventListener(KeyEvent.TYPE, this::handleKey);
+   }
+
+   private void handleKey(KeyEvent event) {
+      if (event.getKey() == Key.KEY_DOWN && event.getAction() == KeyAction.PRESS) {
+         targetScroll = Math.min(targetScroll + fontSize, (getContentHeight() - getHeight()));
+         event.consume();
+         return;
+      }
+
+      if (event.getKey() == Key.KEY_UP && event.getAction() == KeyAction.PRESS) {
+         targetScroll = Math.max(targetScroll - fontSize, 0);
+         event.consume();
+      }
+   }
+
+   public void setRows(@NonNull Integer rows) {
+      setHeightMode(SizeMode.ABSOLUTE);
+      setHeight(rows * fontSize);
+   }
+
+   public int getRows() {
+      return (int) (getHeight() / fontSize);
+   }
+
+   public int getLines() {
+      return (int) (getContentHeight() / fontSize);
+   }
+
+   public String getText() {
+      return text;
+   }
+
+   public void setText(String text) {
+      this.text = requireNonNull(text);
+   }
+
+   public String getFont() {
+      return font;
+   }
+
+   public void setFont(String font) {
+      this.font = requireNonNull(font);
+   }
+
+   public float getFontSize() {
+      return fontSize;
+   }
+
+   public void setFontSize(Float fontSize) {
+      this.fontSize = fontSize;
+   }
+
+   public int getAlignment() {
+      return alignment;
+   }
+
+   @Attribute("alignment")
+   public void setAlignment(TextAlignment... alignment) {
+      byte b = 0;
+
+      for (var elem : alignment) {
+         b |= elem.getAlign();
+      }
+
+      this.alignment = b;
+   }
+
+   public float getRed() {
+      return color.getRed();
+   }
+
+   public void setRed(Float value) {
+      color.setRed(value);
+   }
+
+   public void setRed(Integer value) {
+      color.setRed(value);
+   }
+
+   public float getGreen() {
+      return color.getGreen();
+   }
+
+   public void setGreen(Float value) {
+      color.setGreen(value);
+   }
+
+   public void setGreen(Integer value) {
+      color.setGreen(value);
+   }
+
+   public float getBlue() {
+      return color.getBlue();
+   }
+
+   public void setBlue(Float value) {
+      color.setBlue(value);
+   }
+
+   public void setBlue(Integer value) {
+      color.setBlue(value);
+   }
+
+   public float getAlpha() {
+      return color.getAlpha();
+   }
+
+   public void setAlpha(Float value) {
+      color.setAlpha(value);
+   }
+
+   public void setAlpha(Integer value) {
+      color.setAlpha(value);
+   }
+
+   public void setColor(Float red, Float green, Float blue, Float alpha) {
+      color.setRGBA(red, green, blue, alpha);
+   }
+
+   public void setColor(Float red, Float green, Float blue) {
+      color.setRGB(red, green, blue);
+   }
+
+   public void setColor(Integer hex) {
+      color.setRGB(hex);
+   }
+
+   @Override
+   protected float getContentWidth() {
+      return bounds[2] - bounds[0];
+   }
+
+   @Override
+   protected float getContentHeight() {
+      return bounds[3] - bounds[1];
+   }
+   
+   @Override
+   public void draw(Screen screen, GUI gui) {
+      if (getLines() <= getRows()) {
+         targetScroll = 0;
+         actualScroll = 0;
+      }
+
+      var remainingDistance = targetScroll - actualScroll;
+      actualScroll += remainingDistance * 0.5;
+
+      gui.clip(x + paddingLeft, y + paddingTop, getWidth() - paddingLeft - paddingRight, getHeight() - paddingTop - paddingBottom);
+
+      gui.beginPath();
+      gui.setFontFace(font);
+      gui.setTextAlignment(alignment);
+      gui.setFontSize(fontSize);
+      gui.setFillColor(color);
+      gui.fill();
+      gui.putTextBox(x + paddingLeft, y + paddingTop - actualScroll, getWidth() - paddingLeft - paddingRight, text, bounds);
+      gui.closePath();
+
+      gui.resetClip();
+   }
+}