diff options
Diffstat (limited to 'src/main/java/yuku/ambilwarna/AmbilWarnaDialog.java')
| -rw-r--r-- | src/main/java/yuku/ambilwarna/AmbilWarnaDialog.java | 300 |
1 files changed, 300 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 |