Add Scroll Bar and Scrollable Panel

1 files changed, 145 insertions, 0 deletions

diff --git a/src/main/java/kr/syeyoung/dungeonsguide/gui/elements/MScrollBar.java b/src/main/java/kr/syeyoung/dungeonsguide/gui/elements/MScrollBar.java
new file mode 100644
index 00000000..ecd94b07
--- /dev/null
+++ b/src/main/java/kr/syeyoung/dungeonsguide/gui/elements/MScrollBar.java
@@ -0,0 +1,145 @@
+/*
+ * Dungeons Guide - The most intelligent Hypixel Skyblock Dungeons Mod
+ * Copyright (C) 2021  cyoung06
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package kr.syeyoung.dungeonsguide.gui.elements;
+
+import kr.syeyoung.dungeonsguide.config.types.AColor;
+import kr.syeyoung.dungeonsguide.gui.MPanel;
+import kr.syeyoung.dungeonsguide.utils.RenderUtils;
+import lombok.Getter;
+import lombok.Setter;
+import net.minecraft.client.gui.Gui;
+import net.minecraft.util.MathHelper;
+
+import java.awt.*;
+
+public class MScrollBar extends MPanel {
+    private final Axis axis;
+    @Setter
+    @Getter
+    private int thumbSize, max, min;
+    @Setter
+    @Getter
+    private int current;
+
+    public void addToCurrent(int dv) {
+        int current2 = current + dv;
+
+        current = MathHelper.clamp_int(current2, min, max - thumbSize);
+        if (max - min < thumbSize) current = min;
+
+        if (onUpdate != null) onUpdate.run();
+    }
+
+    @Override
+    public Dimension getPreferredSize() {
+        return new Dimension(axis == Axis.X ? -1 : 20, axis == Axis.Y ? -1 : 20);
+    }
+
+    @Getter
+    @Setter
+    private int background = RenderUtils.blendAlpha(0xFF141414, 0.04f),
+            thumb = RenderUtils.blendAlpha(0xFF141414, 0.08f),
+            thumbHover = RenderUtils.blendAlpha(0xFF141414, 0.09f),
+            thumbClick = RenderUtils.blendAlpha(0xFF141414, 0.14f);
+
+    private Runnable onUpdate;
+
+    public MScrollBar(int min, int max, int thumbSize, int current, Axis axis, Runnable onUpdate) {
+        this.min = min; this.min = max; this.thumbSize = thumbSize; this.current = current; this.axis = axis;
+        this.current = MathHelper.clamp_int(current, min, max - thumbSize);
+        if (max - min < thumbSize) this.current = min;
+        this.onUpdate = onUpdate;
+    }
+
+    @Override
+    public void render(int absMousex, int absMousey, int relMousex0, int relMousey0, float partialTicks, Rectangle scissor) {
+        // RENDER SUPER NICE SCROLL BAR
+        Gui.drawRect(0,0,getBounds().width, getBounds().height, background);
+        double startPerc, endPerc;
+        if (max - min == 0) {
+            startPerc =0; endPerc = 1;
+        } else {
+            startPerc = (current - min)/((double)max - min);
+            endPerc = (current+thumbSize - min)/((double)max - min);
+        }
+
+        int color = thumbHover;
+        if (getBounds().contains(relMousex0, relMousey0)) color = thumbHover;
+        if (grabbed) color = thumbClick;
+
+        if (axis == Axis.X) {
+            int startX = (int) (startPerc * getBounds().width);
+            int endX = (int) (endPerc * getBounds().width);
+            endX = Math.max(endX, startX + 20);
+
+            Gui.drawRect(startX,0,endX,getBounds().height, color);
+        } else if (axis == Axis.Y) {
+            int startY = (int) (startPerc * getBounds().height);
+            int endY = (int) (endPerc * getBounds().height);
+            endY = Math.max(endY, startY + 20);
+
+            Gui.drawRect(0,startY,getBounds().width,endY, color);
+        }
+    }
+
+    private int lastX;
+    private int lastY;
+    private int actualValue;
+    private boolean grabbed;
+    @Override
+    public void mouseClicked(int absMouseX, int absMouseY, int relMouseX, int relMouseY, int mouseButton) {
+        if (!lastAbsClip.contains(absMouseX, absMouseY)) return;
+        if (getTooltipsOpen() > 0) return;
+        grabbed = true;
+        actualValue = current;
+        lastX = absMouseX;
+        lastY = absMouseY;
+    }
+
+    @Override
+    public void mouseClickMove(int absMouseX, int absMouseY, int relMouseX, int relMouseY, int clickedMouseButton, long timeSinceLastClick) {
+        if (!grabbed) return;
+        int dx = absMouseX - lastX, dy = absMouseY - lastY;
+
+        lastX = absMouseX;
+        lastY = absMouseY;
+
+        int prevVal = current;
+
+        if (axis == Axis.Y) {
+            actualValue += dy * (max - min) / getBounds().height;
+        } else if (axis == Axis.X) {
+            actualValue += dx * (max - min) / getBounds().width;
+        }
+
+        current = MathHelper.clamp_int(actualValue, min, max - thumbSize);
+        if (max - min < thumbSize) current = min;
+
+        if (onUpdate != null && prevVal != current) onUpdate.run();
+    }
+
+    @Override
+    public void mouseReleased(int absMouseX, int absMouseY, int relMouseX, int relMouseY, int state) {
+        grabbed= false;
+    }
+
+    public static enum Axis {
+        X, Y
+    }
+}