Home | History | Annotate | Download | only in imageshow 
      1 
      2 package com.android.gallery3d.filtershow.imageshow;
      3 
      4 import android.content.Context;
      5 import android.graphics.Canvas;
      6 import android.graphics.Color;
      7 import android.graphics.Matrix;
      8 import android.graphics.drawable.Drawable;
      9 import android.util.AttributeSet;
     10 import android.view.MotionEvent;
     11 
     12 import com.android.gallery3d.filtershow.editors.EditorDraw;
     13 import com.android.gallery3d.filtershow.filters.FilterDrawRepresentation;
     14 import com.android.gallery3d.filtershow.filters.ImageFilterDraw;
     15 
     16 public class ImageDraw extends ImageShow {
     17 
     18     private static final String LOGTAG = "ImageDraw";
     19     private int mCurrentColor = Color.RED;
     20     final static float INITAL_STROKE_RADIUS = 40;
     21     private float mCurrentSize = INITAL_STROKE_RADIUS;
     22     private byte mType = 0;
     23     private FilterDrawRepresentation mFRep;
     24     private EditorDraw mEditorDraw;
     25 
     26     public ImageDraw(Context context, AttributeSet attrs) {
     27         super(context, attrs);
     28         resetParameter();
     29         super.setOriginalDisabled(true);
     30     }
     31 
     32     public ImageDraw(Context context) {
     33         super(context);
     34         resetParameter();
     35         super.setOriginalDisabled(true);
     36     }
     37 
     38     public void setEditor(EditorDraw editorDraw) {
     39         mEditorDraw = editorDraw;
     40     }
     41     public void setFilterDrawRepresentation(FilterDrawRepresentation fr) {
     42         mFRep = fr;
     43     }
     44 
     45     public Drawable getIcon(Context context) {
     46 
     47         return null;
     48     }
     49 
     50     @Override
     51     public void resetParameter() {
     52         if (mFRep != null) {
     53             mFRep.clear();
     54         }
     55     }
     56 
     57     public void setColor(int color) {
     58         mCurrentColor = color;
     59     }
     60 
     61     public void setSize(int size) {
     62         mCurrentSize = size;
     63     }
     64 
     65     public void setStyle(byte style) {
     66         mType = (byte) (style % ImageFilterDraw.NUMBER_OF_STYLES);
     67     }
     68 
     69     public int getStyle() {
     70         return mType;
     71     }
     72 
     73     public int getSize() {
     74         return (int) mCurrentSize;
     75     }
     76 
     77     @Override
     78     public void updateImage() {
     79         super.updateImage();
     80         invalidate();
     81     }
     82 
     83     float[] mTmpPoint = new float[2]; // so we do not malloc
     84     @Override
     85     public boolean onTouchEvent(MotionEvent event) {
     86         if (event.getPointerCount() > 1) {
     87             boolean ret = super.onTouchEvent(event);
     88             if (mFRep.getCurrentDrawing() != null) {
     89                 mFRep.clearCurrentSection();
     90                 mEditorDraw.commitLocalRepresentation();
     91             }
     92             return ret;
     93         }
     94         if (event.getAction() != MotionEvent.ACTION_DOWN) {
     95             if (mFRep.getCurrentDrawing() == null) {
     96                 return super.onTouchEvent(event);
     97             }
     98         }
     99 
    100         ImageFilterDraw filter = (ImageFilterDraw) getCurrentFilter();
    101 
    102         if (event.getAction() == MotionEvent.ACTION_DOWN) {
    103             calcScreenMapping();
    104             mTmpPoint[0] = event.getX();
    105             mTmpPoint[1] = event.getY();
    106             mToOrig.mapPoints(mTmpPoint);
    107             mFRep.startNewSection(mType, mCurrentColor, mCurrentSize, mTmpPoint[0], mTmpPoint[1]);
    108         }
    109 
    110         if (event.getAction() == MotionEvent.ACTION_MOVE) {
    111 
    112             int historySize = event.getHistorySize();
    113             final int pointerCount = event.getPointerCount();
    114             for (int h = 0; h < historySize; h++) {
    115                 int p = 0;
    116                 {
    117                     mTmpPoint[0] = event.getHistoricalX(p, h);
    118                     mTmpPoint[1] = event.getHistoricalY(p, h);
    119                     mToOrig.mapPoints(mTmpPoint);
    120                     mFRep.addPoint(mTmpPoint[0], mTmpPoint[1]);
    121                 }
    122             }
    123         }
    124 
    125         if (event.getAction() == MotionEvent.ACTION_UP) {
    126             mTmpPoint[0] = event.getX();
    127             mTmpPoint[1] = event.getY();
    128             mToOrig.mapPoints(mTmpPoint);
    129             mFRep.endSection(mTmpPoint[0], mTmpPoint[1]);
    130         }
    131         mEditorDraw.commitLocalRepresentation();
    132         invalidate();
    133         return true;
    134     }
    135 
    136     Matrix mRotateToScreen = new Matrix();
    137     Matrix mToOrig;
    138     private void calcScreenMapping() {
    139         mToOrig = getScreenToImageMatrix(true);
    140         mToOrig.invert(mRotateToScreen);
    141     }
    142 
    143     @Override
    144     public void onDraw(Canvas canvas) {
    145         super.onDraw(canvas);
    146         calcScreenMapping();
    147 
    148     }
    149 
    150 }
    151