package com.vortexwolf.chan.common.controls;

import android.annotation.TargetApi;
import android.content.Context;
import android.graphics.Matrix;
import android.graphics.Movie;
import android.graphics.PointF;
import android.os.Build;
import android.view.MotionEvent;
import android.view.ScaleGestureDetector;
import android.view.View;

@TargetApi(Build.VERSION_CODES.FROYO)
public class TouchGifView extends SimpleGifView {

    Matrix matrix = new Matrix();

    static final int NONE = 0;
    static final int DRAG = 1;
    static final int ZOOM = 2;
    int mode = NONE;

    PointF last = new PointF();
    PointF start = new PointF();
    float minScale = 1f;
    float maxScale = 3f;
    float defaultScale = 2f; //maximum value
    final float cMinScale = 1f;
    final float cMaxScale = 3f;
    final float cDefaultScale = 2f;
    float[] m;

    float redundantXSpace, redundantYSpace;

    float width, height;
    static final int CLICK = 3;
    float saveScale = 1f;
    float right, bottom, origWidth, origHeight, bmWidth, bmHeight;

    ScaleGestureDetector mScaleDetector;

    Context context;


    public TouchGifView(Context context) {
        super(context);
        super.setClickable(true);
        this.context = context;
        mScaleDetector = new ScaleGestureDetector(context, new ScaleListener());
        matrix.setTranslate(1f, 1f);
        m = new float[9];
        setImageMatrix(matrix);
        //setScaleType(ScaleType.MATRIX);
        setOnTouchListener(new OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                mScaleDetector.onTouchEvent(event);
                                
                matrix.getValues(m);
                float x = m[Matrix.MTRANS_X];
                float y = m[Matrix.MTRANS_Y];
                PointF curr = new PointF(event.getX(), event.getY());
                                
                switch (event.getAction()) {
                    case MotionEvent.ACTION_DOWN:
                        last.set(event.getX(), event.getY());
                        start.set(last);
                        mode = DRAG;
                        break;
                    case MotionEvent.ACTION_MOVE:
                        if (mode == DRAG) {
                            float deltaX = curr.x - last.x;
                            float deltaY = curr.y - last.y;
                            float scaleWidth = Math.round(origWidth * saveScale);
                            float scaleHeight = Math.round(origHeight * saveScale);
                            if (scaleWidth < width && scaleHeight < height) {
                                deltaX = 0;
                                deltaY = 0;
                            } else if (scaleWidth < width) {
                                deltaX = 0;
                                if (y + deltaY > 0)
                                    deltaY = -y;
                                else if (y + deltaY < -bottom)
                                    deltaY = -(y + bottom); 
                            } else if (scaleHeight < height) {
                                deltaY = 0;
                                if (x + deltaX > 0)
                                    deltaX = -x;
                                else if (x + deltaX < -right)
                                    deltaX = -(x + right);
                            } else {
                                if (x + deltaX > 0)
                                    deltaX = -x;
                                else if (x + deltaX < -right)
                                    deltaX = -(x + right);
                          
                                if (y + deltaY > 0)
                                    deltaY = -y;
                                else if (y + deltaY < -bottom)
                                    deltaY = -(y + bottom);
                            }
                            matrix.postTranslate(deltaX, deltaY);
                            last.set(curr.x, curr.y);
                        }
                        break;
                            
                    case MotionEvent.ACTION_UP:
                        mode = NONE;
                        int xDiff = (int) Math.abs(curr.x - start.x);
                        int yDiff = (int) Math.abs(curr.y - start.y);
                        if (xDiff < CLICK && yDiff < CLICK)
                            performClick();
                        break;
                
                    case MotionEvent.ACTION_POINTER_UP:
                        mode = NONE;
                        break;
                }
                setImageMatrix(matrix);
                invalidate();
                return true; // indicate event was handled
            }
        });
    }

    @Override
    public boolean setData(byte[] array) { 
        Movie movie = Movie.decodeByteArray(array, 0, array.length);
        bmWidth = movie.width();
        bmHeight = movie.height();
        return super.setMovie(movie);
    }

    public void setMaxZoom(float x) {
        maxScale = x;
    }

    private class ScaleListener extends ScaleGestureDetector.SimpleOnScaleGestureListener {
        @Override
        public boolean onScaleBegin(ScaleGestureDetector detector) {
            mode = ZOOM;
            return true;
        }

        @Override
        public boolean onScale(ScaleGestureDetector detector) {
            float mScaleFactor = (float)Math.min(Math.max(.95f, detector.getScaleFactor()), 1.05);
            float origScale = saveScale;
            saveScale *= mScaleFactor;
            if (saveScale > maxScale) {
                saveScale = maxScale;
                mScaleFactor = maxScale / origScale;
            } else if (saveScale < minScale) {
                saveScale = minScale;
                mScaleFactor = minScale / origScale;
            }
            right = width * saveScale - width - (2 * redundantXSpace * saveScale);
            bottom = height * saveScale - height - (2 * redundantYSpace * saveScale);
            if (origWidth * saveScale <= width || origHeight * saveScale <= height) {
                matrix.postScale(mScaleFactor, mScaleFactor, width / 2, height / 2);
                if (mScaleFactor < 1) {
                    matrix.getValues(m);
                    float x = m[Matrix.MTRANS_X];
                    float y = m[Matrix.MTRANS_Y];
                    if (mScaleFactor < 1) {
                        if (Math.round(origWidth * saveScale) >= width || Math.round(origHeight * saveScale) >= height) {
                            
                            if (Math.round(origWidth * saveScale) < width) {
                                if (y < -bottom)
                                    matrix.postTranslate(0, -(y + bottom));
                                else if (y > 0)
                                    matrix.postTranslate(0, -y);
                            } else {
                                if (x < -right) 
                                    matrix.postTranslate(-(x + right), 0);
                                else if (x > 0) 
                                    matrix.postTranslate(-x, 0);
                            }
                        }
                    }
                }
            } else {
                matrix.postScale(mScaleFactor, mScaleFactor, detector.getFocusX(), detector.getFocusY());
                matrix.getValues(m);
                float x = m[Matrix.MTRANS_X];
                float y = m[Matrix.MTRANS_Y];
                if (mScaleFactor < 1) {
                    if (x < -right) 
                        matrix.postTranslate(-(x + right), 0);
                    else if (x > 0) 
                        matrix.postTranslate(-x, 0);
                    if (y < -bottom)
                        matrix.postTranslate(0, -(y + bottom));
                    else if (y > 0)
                        matrix.postTranslate(0, -y);
                }
            }
            return true;

        }
    }

    @Override
    protected void onMeasure (int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        width = MeasureSpec.getSize(widthMeasureSpec);
        height = MeasureSpec.getSize(heightMeasureSpec);
        //default scale.
        float scaleX =  (float)width / (float)bmWidth;
        float scaleY = (float)height / (float)bmHeight;
        float scale = Math.min(scaleX, scaleY); //to fit the screen
        defaultScale = Math.min(cDefaultScale, scale);
        defaultScale *= 3;
        minScale = Math.min(cMinScale, scale)/defaultScale;
        maxScale = cMaxScale/defaultScale;
        matrix.setScale(defaultScale, defaultScale);
        setImageMatrix(matrix);
        saveScale = 1f;
    
        //Center the image
        redundantYSpace = (float)height - (defaultScale * (float)bmHeight) ;
        redundantXSpace = (float)width - (defaultScale * (float)bmWidth);
        redundantYSpace /= (float)2;
        redundantXSpace /= (float)2;
    
        matrix.postTranslate(redundantXSpace, redundantYSpace);
    
        origWidth = width - 2 * redundantXSpace;
        origHeight = height - 2 * redundantYSpace;
        right = width * saveScale - width - (2 * redundantXSpace * saveScale);
        bottom = height * saveScale - height - (2 * redundantYSpace * saveScale);
        setImageMatrix(matrix);
    }
    
    public boolean canScrollHorizontallyOldAPI(int direction) {
        return this.saveScale > 1f;
    }

}

@@ -8581,35 +8581,8 @@
 e);%0A
-        defaultScale *= 3;%0A
     

debug fix