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); } }