Add basic Script visualization and colorization

src/main/java/de/zonlykroks/advancedscripts/screen/ScriptEditScreen.java

@@ -0,0 +1,111 @@
+package de.zonlykroks.advancedscripts.screen;
+
+import com.mojang.blaze3d.systems.RenderSystem;
+import de.zonlykroks.advancedscripts.lexer.ScriptColorizer;
+import de.zonlykroks.advancedscripts.lexer.Token;
+import de.zonlykroks.advancedscripts.lexer.TokenTypeColors;
+import net.minecraft.client.font.TextHandler;
+import net.minecraft.client.gui.screen.Screen;
+import net.minecraft.client.gui.screen.ingame.BookScreen;
+import net.minecraft.client.render.GameRenderer;
+import net.minecraft.client.util.NarratorManager;
+import net.minecraft.client.util.math.MatrixStack;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.item.ItemStack;
+import net.minecraft.nbt.NbtCompound;
+import net.minecraft.text.Style;
+import net.minecraft.util.Hand;
+import org.apache.commons.lang3.mutable.MutableInt;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.concurrent.atomic.AtomicInteger;
+
+public class ScriptEditScreen extends Screen {
+
+    private PlayerEntity player;
+    private ItemStack itemStack;
+    private Hand hand;
+
+    private List<String> lines = new ArrayList<>();
+
+    public ScriptEditScreen(PlayerEntity player, ItemStack itemStack, Hand hand) {
+        super(NarratorManager.EMPTY);
+        this.player = player;
+        this.itemStack = itemStack;
+        this.hand = hand;
+
+        NbtCompound nbtCompound = itemStack.getNbt();
+        if (nbtCompound != null) {
+            BookScreen.filterPages(nbtCompound, s -> {
+                lines.addAll(Arrays.asList(s.split("\n")));
+            });
+        }
+        if (lines.isEmpty()) {
+            lines.add("");
+        }
+    }
+
+    @Override
+    public void render(MatrixStack matrices, int mouseX, int mouseY, float delta) {
+        this.renderBackground(matrices);
+        RenderSystem.setShader(GameRenderer::getPositionTexProgram);
+        RenderSystem.setShaderColor(1.0F, 1.0F, 1.0F, 1.0F);
+        fill(matrices, 23, 23, this.width - 23, this.height - 72, TokenTypeColors.BACKGROUND);
+
+        int lineNumberLength = textRenderer.getWidth(lines.size() + "");
+
+        // TODO: Implement text rendering
+        int lineNumberText = 1;
+        MutableInt lineNumber = new MutableInt();
+        TextHandler textHandler = this.textRenderer.getTextHandler();
+        for (String s : lines) {
+            if (lineNumber.getValue() * 9 + 25 > this.height - 75) {
+                break;
+            }
+
+            // Line number
+            this.textRenderer.draw(matrices, lineNumberText + "", 25 + lineNumberLength - textRenderer.getWidth(lineNumberText + ""), 25 + lineNumber.getValue() * 9, 0xFFFFFF);
+            lineNumberText++;
+
+            // Line text
+            List<Token> tokens = ScriptColorizer.colorize(lineNumber.getValue(), s);
+            AtomicInteger x = new AtomicInteger(25 + lineNumberLength + 5);
+            for (Token token : tokens) {
+                textHandler.wrapLines(token.text, this.width - x.get() - 25, Style.EMPTY, true, (style, start, end) -> {
+                    int y = lineNumber.getValue() * 9;
+                    if (y + 25 > this.height - 75) {
+                        return;
+                    }
+
+                    String line = token.text.substring(start, end);
+                    this.textRenderer.draw(matrices, line, x.get(), 25 + y, token.color);
+                    x.addAndGet(textRenderer.getWidth(line));
+                    if (x.get() > this.width - 50 - lineNumberLength - 5) {
+                        x.set(25 + lineNumberLength + 5);
+                        lineNumber.increment();
+                    }
+                });
+            }
+            lineNumber.increment();
+        }
+
+        super.render(matrices, mouseX, mouseY, delta);
+    }
+
+    @Override
+    public boolean keyReleased(int keyCode, int scanCode, int modifiers) {
+        return super.keyReleased(keyCode, scanCode, modifiers);
+    }
+
+    @Override
+    public boolean charTyped(char chr, int modifiers) {
+        return super.charTyped(chr, modifiers);
+    }
+
+    @Override
+    public boolean mouseClicked(double mouseX, double mouseY, int button) {
+        return super.mouseClicked(mouseX, mouseY, button);
+    }
+}