Better color picker

core/src/mindustry/ui/dialogs/ColorPicker.java

@@ -2,13 +2,21 @@ package mindustry.ui.dialogs;
 
 import arc.func.*;
 import arc.graphics.*;
+import arc.graphics.Texture.*;
+import arc.graphics.g2d.*;
+import arc.scene.*;
 import arc.scene.ui.*;
+import arc.util.*;
 import mindustry.gen.*;
-import mindustry.graphics.*;
 
 public class ColorPicker extends BaseDialog{
+    private static Texture hueTex;
+
     private Cons<Color> cons = c -> {};
     Color current = new Color();
+    float h, s, v, a;
+    TextField hexField;
+    Slider hSlider, sSlider, vSlider, aSlider;
 
     public ColorPicker(){
         super("@pickcolor");
@@ -23,6 +31,17 @@ public class ColorPicker extends BaseDialog{
         this.cons = consumer;
         show();
 
+        if(hueTex == null){
+            hueTex = Pixmaps.hueTexture(128, 1);
+            hueTex.setFilter(TextureFilter.linear);
+        }
+
+        float[] values = color.toHsv(new float[3]);
+        h = values[0];
+        s = values[1];
+        v = values[2];
+        a = color.a;
+
         cont.clear();
         cont.pane(t -> {
             t.table(Tex.pane, i -> {
@@ -32,25 +51,113 @@ public class ColorPicker extends BaseDialog{
                 }}).size(200f);
             }).colspan(2).padBottom(5);
 
-            float w = 150f;
-
             t.row();
 
-            t.defaults().padBottom(4);
-            t.add("R").color(Pal.remove);
-            t.slider(0f, 1f, 0.01f, current.r, current::r).width(w);
-            t.row();
-            t.add("G").color(Color.lime);
-            t.slider(0f, 1f, 0.01f, current.g, current::g).width(w);
-            t.row();
-            t.add("B").color(Color.royal);
-            t.slider(0f, 1f, 0.01f, current.b, current::b).width(w);
-            t.row();
+            t.defaults().padBottom(6).width(400f).height(44f);
+
+            t.stack(new Image(new TextureRegion(hueTex)), hSlider = new Slider(0f, 360f, 0.3f, false){{
+                setValue(h);
+                moved(value -> {
+                    h = value;
+                    updateColor();
+                });
+            }}).row();
+
+            t.stack(new Element(){
+                @Override
+                public void draw(){
+                    float first = Tmp.c1.set(current).saturation(0f).a(parentAlpha).toFloatBits();
+                    float second = Tmp.c1.set(current).saturation(1f).a(parentAlpha).toFloatBits();
+
+                    Fill.quad(
+                        x, y, first,
+                        x + width, y, second,
+                        x + width, y + height, second,
+                        x, y + height, first
+                    );
+                }
+            }, sSlider = new Slider(0f, 1f, 0.001f, false){{
+                setValue(s);
+                moved(value -> {
+                    s = value;
+                    updateColor();
+                });
+            }}).row();
+
+            t.stack(new Element(){
+                @Override
+                public void draw(){
+                    float first = Tmp.c1.set(current).value(0f).a(parentAlpha).toFloatBits();
+                    float second = Tmp.c1.fromHsv(h, s, 1f).a(parentAlpha).toFloatBits();
+
+                    Fill.quad(
+                    x, y, first,
+                    x + width, y, second,
+                    x + width, y + height, second,
+                    x, y + height, first
+                    );
+                }
+            }, vSlider = new Slider(0f, 1f, 0.001f, false){{
+                setValue(v);
+
+                moved(value -> {
+                    v = value;
+                    updateColor();
+                });
+            }}).row();
+
             if(alpha){
-                t.add("A");
-                t.slider(0f, 1f, 0.01f, current.a, current::a).width(w);
-                t.row();
+                t.stack(new Image(Tex.alphaBgLine), new Element(){
+                    @Override
+                    public void draw(){
+                        float first = Tmp.c1.set(current).a(0f).toFloatBits();
+                        float second = Tmp.c1.set(current).a(parentAlpha).toFloatBits();
+
+                        Fill.quad(
+                        x, y, first,
+                        x + width, y, second,
+                        x + width, y + height, second,
+                        x, y + height, first
+                        );
+                    }
+                }, aSlider = new Slider(0f, 1f, 0.001f, false){{
+                    setValue(a);
+
+                    moved(value -> {
+                        a = value;
+                        updateColor();
+                    });
+                }}).row();
             }
+
+            hexField = t.field(current.toString(), value -> {
+                try{
+                    current.set(Color.valueOf(value).a(a));
+                    current.toHsv(values);
+                    h = values[0];
+                    s = values[1];
+                    v = values[2];
+                    a = current.a;
+
+                    hSlider.setValue(h);
+                    sSlider.setValue(s);
+                    vSlider.setValue(v);
+                    if(aSlider != null){
+                        aSlider.setValue(a);
+                    }
+
+                    updateColor(false);
+                }catch(Exception ignored){
+                }
+            }).size(130f, 40f).valid(text -> {
+                //garbage performance but who cares this runs only every key type anyway
+                try{
+                    Color.valueOf(text);
+                    return true;
+                }catch(Exception e){
+                    return false;
+                }
+            }).get();
         });
 
         buttons.clear();
@@ -60,4 +167,21 @@ public class ColorPicker extends BaseDialog{
             hide();
         });
     }
+
+    void updateColor(){
+        updateColor(true);
+    }
+
+    void updateColor(boolean updateField){
+        current.fromHsv(h, s, v);
+        current.a = a;
+
+        if(hexField != null && updateField){
+            String val = current.toString();
+            if(current.a >= 0.9999f){
+                val = val.substring(0, 6);
+            }
+            hexField.setText(val);
+        }
+    }
 }