Color choose dialog

4 files changed, 514 insertions, 0 deletions

diff --git a/src/main/java/yuku/ambilwarna/AmbilWarnaDialog.java b/src/main/java/yuku/ambilwarna/AmbilWarnaDialog.java
new file mode 100644
index 00000000..e553ed10
--- /dev/null
+++ b/src/main/java/yuku/ambilwarna/AmbilWarnaDialog.java
@@ -0,0 +1,300 @@
+package yuku.ambilwarna;
+
+import android.app.AlertDialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.DialogInterface.OnCancelListener;
+import android.graphics.Color;
+import android.graphics.drawable.GradientDrawable;
+import android.view.LayoutInflater;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.ViewTreeObserver;
+import android.widget.ImageView;
+import android.widget.RelativeLayout;
+
+import eu.siacs.conversations.R;
+
+public class AmbilWarnaDialog {
+	public interface OnAmbilWarnaListener {
+		void onCancel(AmbilWarnaDialog dialog);
+
+		void onOk(AmbilWarnaDialog dialog, int color);
+	}
+
+	final AlertDialog dialog;
+	private final boolean supportsAlpha;
+	final OnAmbilWarnaListener listener;
+	final View viewHue;
+	final AmbilWarnaSquare viewSatVal;
+	final ImageView viewCursor;
+	final ImageView viewAlphaCursor;
+	final View viewOldColor;
+	final View viewNewColor;
+	final View viewAlphaOverlay;
+	final ImageView viewTarget;
+	final ImageView viewAlphaCheckered;
+	final ViewGroup viewContainer;
+	final float[] currentColorHsv = new float[3];
+	int alpha;
+
+	/**
+	 * Create an AmbilWarnaDialog.
+	 *
+	 * @param context activity context
+	 * @param color current color
+	 * @param listener an OnAmbilWarnaListener, allowing you to get back error or OK
+	 */
+	public AmbilWarnaDialog(final Context context, int color, OnAmbilWarnaListener listener) {
+		this(context, color, false, listener);
+	}
+
+	/**
+	 * Create an AmbilWarnaDialog.
+	 *
+	 * @param context activity context
+	 * @param color current color
+	 * @param supportsAlpha whether alpha/transparency controls are enabled
+	 * @param listener an OnAmbilWarnaListener, allowing you to get back error or OK
+	 */
+	public AmbilWarnaDialog(final Context context, int color, boolean supportsAlpha, OnAmbilWarnaListener listener) {
+		this.supportsAlpha = supportsAlpha;
+		this.listener = listener;
+
+		if (!supportsAlpha) { // remove alpha if not supported
+			color = color | 0xff000000;
+		}
+
+		Color.colorToHSV(color, currentColorHsv);
+		alpha = Color.alpha(color);
+
+		final View view = LayoutInflater.from(context).inflate(R.layout.ambilwarna_dialog, null);
+		viewHue = view.findViewById(R.id.ambilwarna_viewHue);
+		viewSatVal = (AmbilWarnaSquare) view.findViewById(R.id.ambilwarna_viewSatBri);
+		viewCursor = (ImageView) view.findViewById(R.id.ambilwarna_cursor);
+		viewOldColor = view.findViewById(R.id.ambilwarna_oldColor);
+		viewNewColor = view.findViewById(R.id.ambilwarna_newColor);
+		viewTarget = (ImageView) view.findViewById(R.id.ambilwarna_target);
+		viewContainer = (ViewGroup) view.findViewById(R.id.ambilwarna_viewContainer);
+		viewAlphaOverlay = view.findViewById(R.id.ambilwarna_overlay);
+		viewAlphaCursor = (ImageView) view.findViewById(R.id.ambilwarna_alphaCursor);
+		viewAlphaCheckered = (ImageView) view.findViewById(R.id.ambilwarna_alphaCheckered);
+
+		{ // hide/show alpha
+			viewAlphaOverlay.setVisibility(supportsAlpha? View.VISIBLE: View.GONE);
+			viewAlphaCursor.setVisibility(supportsAlpha? View.VISIBLE: View.GONE);
+			viewAlphaCheckered.setVisibility(supportsAlpha? View.VISIBLE: View.GONE);
+		}
+
+		viewSatVal.setHue(getHue());
+		viewOldColor.setBackgroundColor(color);
+		viewNewColor.setBackgroundColor(color);
+
+		viewHue.setOnTouchListener(new View.OnTouchListener() {
+			@Override
+			public boolean onTouch(View v, MotionEvent event) {
+				if (event.getAction() == MotionEvent.ACTION_MOVE
+				|| event.getAction() == MotionEvent.ACTION_DOWN
+				|| event.getAction() == MotionEvent.ACTION_UP) {
+
+					float y = event.getY();
+					if (y < 0.f) y = 0.f;
+					if (y > viewHue.getMeasuredHeight()) {
+						y = viewHue.getMeasuredHeight() - 0.001f; // to avoid jumping the cursor from bottom to top.
+					}
+					float hue = 360.f - 360.f / viewHue.getMeasuredHeight() * y;
+					if (hue == 360.f) hue = 0.f;
+					setHue(hue);
+
+					// update view
+					viewSatVal.setHue(getHue());
+					moveCursor();
+					viewNewColor.setBackgroundColor(getColor());
+					updateAlphaView();
+					return true;
+				}
+				return false;
+			}
+		});
+
+		if (supportsAlpha) viewAlphaCheckered.setOnTouchListener(new View.OnTouchListener() {
+			@Override
+			public boolean onTouch(View v, MotionEvent event) {
+				if ((event.getAction() == MotionEvent.ACTION_MOVE)
+				|| (event.getAction() == MotionEvent.ACTION_DOWN)
+				|| (event.getAction() == MotionEvent.ACTION_UP)) {
+
+					float y = event.getY();
+					if (y < 0.f) {
+						y = 0.f;
+					}
+					if (y > viewAlphaCheckered.getMeasuredHeight()) {
+						y = viewAlphaCheckered.getMeasuredHeight() - 0.001f; // to avoid jumping the cursor from bottom to top.
+					}
+					final int a = Math.round(255.f - ((255.f / viewAlphaCheckered.getMeasuredHeight()) * y));
+					AmbilWarnaDialog.this.setAlpha(a);
+
+					// update view
+					moveAlphaCursor();
+					int col = AmbilWarnaDialog.this.getColor();
+					int c = a << 24 | col & 0x00ffffff;
+					viewNewColor.setBackgroundColor(c);
+					return true;
+				}
+				return false;
+			}
+		});
+		viewSatVal.setOnTouchListener(new View.OnTouchListener() {
+			@Override
+			public boolean onTouch(View v, MotionEvent event) {
+				if (event.getAction() == MotionEvent.ACTION_MOVE
+				|| event.getAction() == MotionEvent.ACTION_DOWN
+				|| event.getAction() == MotionEvent.ACTION_UP) {
+
+					float x = event.getX(); // touch event are in dp units.
+					float y = event.getY();
+
+					if (x < 0.f) x = 0.f;
+					if (x > viewSatVal.getMeasuredWidth()) x = viewSatVal.getMeasuredWidth();
+					if (y < 0.f) y = 0.f;
+					if (y > viewSatVal.getMeasuredHeight()) y = viewSatVal.getMeasuredHeight();
+
+					setSat(1.f / viewSatVal.getMeasuredWidth() * x);
+					setVal(1.f - (1.f / viewSatVal.getMeasuredHeight() * y));
+
+					// update view
+					moveTarget();
+					viewNewColor.setBackgroundColor(getColor());
+
+					return true;
+				}
+				return false;
+			}
+		});
+
+		dialog = new AlertDialog.Builder(context)
+		.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
+			@Override
+			public void onClick(DialogInterface dialog, int which) {
+				if (AmbilWarnaDialog.this.listener != null) {
+					AmbilWarnaDialog.this.listener.onOk(AmbilWarnaDialog.this, getColor());
+				}
+			}
+		})
+		.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
+			@Override
+			public void onClick(DialogInterface dialog, int which) {
+				if (AmbilWarnaDialog.this.listener != null) {
+					AmbilWarnaDialog.this.listener.onCancel(AmbilWarnaDialog.this);
+				}
+			}
+		})
+		.setOnCancelListener(new OnCancelListener() {
+			// if back button is used, call back our listener.
+			@Override
+			public void onCancel(DialogInterface paramDialogInterface) {
+				if (AmbilWarnaDialog.this.listener != null) {
+					AmbilWarnaDialog.this.listener.onCancel(AmbilWarnaDialog.this);
+				}
+
+			}
+		})
+		.create();
+		// kill all padding from the dialog window
+		dialog.setView(view, 0, 0, 0, 0);
+
+		// move cursor & target on first draw
+		ViewTreeObserver vto = view.getViewTreeObserver();
+		vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
+			@Override
+			public void onGlobalLayout() {
+				moveCursor();
+				if (AmbilWarnaDialog.this.supportsAlpha) moveAlphaCursor();
+				moveTarget();
+				if (AmbilWarnaDialog.this.supportsAlpha) updateAlphaView();
+				view.getViewTreeObserver().removeGlobalOnLayoutListener(this);
+			}
+		});
+	}
+
+	protected void moveCursor() {
+		float y = viewHue.getMeasuredHeight() - (getHue() * viewHue.getMeasuredHeight() / 360.f);
+		if (y == viewHue.getMeasuredHeight()) y = 0.f;
+		RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) viewCursor.getLayoutParams();
+		layoutParams.leftMargin = (int) (viewHue.getLeft() - Math.floor(viewCursor.getMeasuredWidth() / 2) - viewContainer.getPaddingLeft());
+		layoutParams.topMargin = (int) (viewHue.getTop() + y - Math.floor(viewCursor.getMeasuredHeight() / 2) - viewContainer.getPaddingTop());
+		viewCursor.setLayoutParams(layoutParams);
+	}
+
+	protected void moveTarget() {
+		float x = getSat() * viewSatVal.getMeasuredWidth();
+		float y = (1.f - getVal()) * viewSatVal.getMeasuredHeight();
+		RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) viewTarget.getLayoutParams();
+		layoutParams.leftMargin = (int) (viewSatVal.getLeft() + x - Math.floor(viewTarget.getMeasuredWidth() / 2) - viewContainer.getPaddingLeft());
+		layoutParams.topMargin = (int) (viewSatVal.getTop() + y - Math.floor(viewTarget.getMeasuredHeight() / 2) - viewContainer.getPaddingTop());
+		viewTarget.setLayoutParams(layoutParams);
+	}
+
+	protected void moveAlphaCursor() {
+		final int measuredHeight = this.viewAlphaCheckered.getMeasuredHeight();
+		float y = measuredHeight - ((this.getAlpha() * measuredHeight) / 255.f);
+		final RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) this.viewAlphaCursor.getLayoutParams();
+		layoutParams.leftMargin = (int) (this.viewAlphaCheckered.getLeft() - Math.floor(this.viewAlphaCursor.getMeasuredWidth() / 2) - this.viewContainer.getPaddingLeft());
+		layoutParams.topMargin = (int) ((this.viewAlphaCheckered.getTop() + y) - Math.floor(this.viewAlphaCursor.getMeasuredHeight() / 2) - this.viewContainer.getPaddingTop());
+
+		this.viewAlphaCursor.setLayoutParams(layoutParams);
+	}
+
+	private int getColor() {
+		final int argb = Color.HSVToColor(currentColorHsv);
+		return alpha << 24 | (argb & 0x00ffffff);
+	}
+
+	private float getHue() {
+		return currentColorHsv[0];
+	}
+
+	private float getAlpha() {
+		return this.alpha;
+	}
+
+	private float getSat() {
+		return currentColorHsv[1];
+	}
+
+	private float getVal() {
+		return currentColorHsv[2];
+	}
+
+	private void setHue(float hue) {
+		currentColorHsv[0] = hue;
+	}
+
+	private void setSat(float sat) {
+		currentColorHsv[1] = sat;
+	}
+
+	private void setAlpha(int alpha) {
+		this.alpha = alpha;
+	}
+
+	private void setVal(float val) {
+		currentColorHsv[2] = val;
+	}
+
+	public void show() {
+		dialog.show();
+	}
+
+	public AlertDialog getDialog() {
+		return dialog;
+	}
+
+	private void updateAlphaView() {
+		final GradientDrawable gd = new GradientDrawable(GradientDrawable.Orientation.TOP_BOTTOM, new int[] {
+		Color.HSVToColor(currentColorHsv), 0x0
+		});
+		viewAlphaOverlay.setBackgroundDrawable(gd);
+	}
+}
\ No newline at end of file
diff --git a/src/main/java/yuku/ambilwarna/AmbilWarnaSquare.java b/src/main/java/yuku/ambilwarna/AmbilWarnaSquare.java
new file mode 100644
index 00000000..9fb854df
--- /dev/null
+++ b/src/main/java/yuku/ambilwarna/AmbilWarnaSquare.java
@@ -0,0 +1,46 @@
+package yuku.ambilwarna;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.ComposeShader;
+import android.graphics.LinearGradient;
+import android.graphics.Paint;
+import android.graphics.PorterDuff;
+import android.graphics.Shader;
+import android.graphics.Shader.TileMode;
+import android.util.AttributeSet;
+import android.view.View;
+
+public class AmbilWarnaSquare extends View {
+	Paint paint;
+	Shader luar;
+	final float[] color = { 1.f, 1.f, 1.f };
+
+	public AmbilWarnaSquare(Context context, AttributeSet attrs) {
+		super(context, attrs);
+	}
+
+	public AmbilWarnaSquare(Context context, AttributeSet attrs, int defStyle) {
+		super(context, attrs, defStyle);
+	}
+
+	@SuppressLint("DrawAllocation") @Override protected void onDraw(Canvas canvas) {
+		super.onDraw(canvas);
+		if (paint == null) {
+			paint = new Paint();
+			luar = new LinearGradient(0.f, 0.f, 0.f, this.getMeasuredHeight(), 0xffffffff, 0xff000000, TileMode.CLAMP);
+		}
+		int rgb = Color.HSVToColor(color);
+		Shader dalam = new LinearGradient(0.f, 0.f, this.getMeasuredWidth(), 0.f, 0xffffffff, rgb, TileMode.CLAMP);
+		ComposeShader shader = new ComposeShader(luar, dalam, PorterDuff.Mode.MULTIPLY);
+		paint.setShader(shader);
+		canvas.drawRect(0.f, 0.f, this.getMeasuredWidth(), this.getMeasuredHeight(), paint);
+	}
+
+	void setHue(float hue) {
+		color[0] = hue;
+		invalidate();
+	}
+}
\ No newline at end of file
diff --git a/src/main/java/yuku/ambilwarna/widget/AmbilWarnaPrefWidgetView.java b/src/main/java/yuku/ambilwarna/widget/AmbilWarnaPrefWidgetView.java
new file mode 100644
index 00000000..6da10bb0
--- /dev/null
+++ b/src/main/java/yuku/ambilwarna/widget/AmbilWarnaPrefWidgetView.java
@@ -0,0 +1,34 @@
+package yuku.ambilwarna.widget;
+
+import android.content.Context;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.Paint.Style;
+import android.util.AttributeSet;
+import android.util.FloatMath;
+import android.view.View;
+
+public class AmbilWarnaPrefWidgetView extends View {
+	Paint paint;
+	float rectSize;
+	float strokeWidth;
+
+	public AmbilWarnaPrefWidgetView(Context context, AttributeSet attrs) {
+		super(context, attrs);
+		
+		float density = context.getResources().getDisplayMetrics().density;
+		rectSize = FloatMath.floor(24.f * density + 0.5f);
+		strokeWidth = FloatMath.floor(1.f * density + 0.5f);
+
+		paint = new Paint();
+		paint.setColor(0xffffffff);
+		paint.setStyle(Style.STROKE);
+		paint.setStrokeWidth(strokeWidth);
+	}
+
+	@Override protected void onDraw(Canvas canvas) {
+		super.onDraw(canvas);
+
+		canvas.drawRect(strokeWidth, strokeWidth, rectSize - strokeWidth, rectSize - strokeWidth, paint);
+	}
+}
\ No newline at end of file
diff --git a/src/main/java/yuku/ambilwarna/widget/AmbilWarnaPreference.java b/src/main/java/yuku/ambilwarna/widget/AmbilWarnaPreference.java
new file mode 100644
index 00000000..f18ed00c
--- /dev/null
+++ b/src/main/java/yuku/ambilwarna/widget/AmbilWarnaPreference.java
@@ -0,0 +1,134 @@
+package yuku.ambilwarna.widget;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.preference.Preference;
+import android.util.AttributeSet;
+import android.view.View;
+
+import eu.siacs.conversations.R;
+import yuku.ambilwarna.AmbilWarnaDialog;
+
+public class AmbilWarnaPreference extends Preference {
+	private final boolean supportsAlpha;
+	int value;
+
+	public AmbilWarnaPreference(Context context, AttributeSet attrs) {
+		super(context, attrs);
+
+		final TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.AmbilWarnaPreference);
+		supportsAlpha = ta.getBoolean(R.styleable.AmbilWarnaPreference_supportsAlpha, false);
+
+		setWidgetLayoutResource(R.layout.ambilwarna_pref_widget);
+	}
+
+	@Override protected void onBindView(View view) {
+		super.onBindView(view);
+
+		// Set our custom views inside the layout
+		final View box = view.findViewById(R.id.ambilwarna_pref_widget_box);
+		if (box != null) {
+			box.setBackgroundColor(value);
+		}
+	}
+
+	@Override protected void onClick() {
+		new AmbilWarnaDialog(getContext(), value, supportsAlpha, new AmbilWarnaDialog.OnAmbilWarnaListener() {
+			@Override public void onOk(AmbilWarnaDialog dialog, int color) {
+				if (!callChangeListener(color)) return; // They don't want the value to be set
+				value = color;
+				persistInt(value);
+				notifyChanged();
+			}
+
+			@Override public void onCancel(AmbilWarnaDialog dialog) {
+				// nothing to do
+			}
+		}).show();
+	}
+
+	public void forceSetValue(int value) {
+		this.value = value;
+		persistInt(value);
+		notifyChanged();
+	}
+
+	@Override protected Object onGetDefaultValue(TypedArray a, int index) {
+		// This preference type's value type is Integer, so we read the default value from the attributes as an Integer.
+		return a.getInteger(index, 0);
+	}
+
+	@Override protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
+		if (restoreValue) { // Restore state
+			value = getPersistedInt(value);
+		} else { // Set state
+			int value = (Integer) defaultValue;
+			this.value = value;
+			persistInt(value);
+		}
+	}
+
+	/*
+	 * Suppose a client uses this preference type without persisting. We
+	 * must save the instance state so it is able to, for example, survive
+	 * orientation changes.
+	 */
+	@Override protected Parcelable onSaveInstanceState() {
+		final Parcelable superState = super.onSaveInstanceState();
+		if (isPersistent()) return superState; // No need to save instance state since it's persistent
+
+		final SavedState myState = new SavedState(superState);
+		myState.value = value;
+		return myState;
+	}
+
+	@Override protected void onRestoreInstanceState(Parcelable state) {
+		if (!state.getClass().equals(SavedState.class)) {
+			// Didn't save state for us in onSaveInstanceState
+			super.onRestoreInstanceState(state);
+			return;
+		}
+
+		// Restore the instance state
+		SavedState myState = (SavedState) state;
+		super.onRestoreInstanceState(myState.getSuperState());
+		this.value = myState.value;
+		notifyChanged();
+	}
+
+	/**
+	 * SavedState, a subclass of {@link android.preference.Preference.BaseSavedState}, will store the state
+	 * of MyPreference, a subclass of Preference.
+	 * <p>
+	 * It is important to always call through to super methods.
+	 */
+	private static class SavedState extends BaseSavedState {
+		int value;
+
+		public SavedState(Parcel source) {
+			super(source);
+			value = source.readInt();
+		}
+
+		@Override public void writeToParcel(Parcel dest, int flags) {
+			super.writeToParcel(dest, flags);
+			dest.writeInt(value);
+		}
+
+		public SavedState(Parcelable superState) {
+			super(superState);
+		}
+
+		@SuppressWarnings("unused") public static final Creator<SavedState> CREATOR = new Creator<SavedState>() {
+			public SavedState createFromParcel(Parcel in) {
+				return new SavedState(in);
+			}
+
+			public SavedState[] newArray(int size) {
+				return new SavedState[size];
+			}
+		};
+	}
+}
\ No newline at end of file