Add a Draw filter

Change-Id: I67aecc9241b4534491fb838b84d0da1a6edbbb54

1 files changed, 119 insertions, 0 deletions

diff --git a/src/com/android/gallery3d/filtershow/imageshow/ImageDraw.java b/src/com/android/gallery3d/filtershow/imageshow/ImageDraw.java
new file mode 100644
index 000000000..b43cc1d4f
--- /dev/null
+++ b/src/com/android/gallery3d/filtershow/imageshow/ImageDraw.java
@@ -0,0 +1,119 @@
+
+package com.android.gallery3d.filtershow.imageshow;
+
+import android.content.Context;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Matrix;
+import android.graphics.Paint;
+import android.graphics.Paint.Style;
+import android.graphics.RectF;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.MotionEvent;
+
+import com.android.gallery3d.filtershow.filters.ImageFilterDraw;
+import com.android.gallery3d.filtershow.filters.RedEyeCandidate;
+
+public class ImageDraw extends ImageSlave {
+
+    private static final String LOGTAG = "ImageDraw";
+
+    public ImageDraw(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public ImageDraw(Context context) {
+        super(context);
+    }
+
+    @Override
+    public void resetParameter() {
+        ImageFilterDraw filter = (ImageFilterDraw) getCurrentFilter();
+        if (filter != null) {
+            filter.clear();
+        }
+
+        invalidate();
+    }
+
+    @Override
+    public void updateImage() {
+        super.updateImage();
+        invalidate();
+    }
+
+    float[] mTmpPoint = new float[2]; // so we do not malloc
+    @Override
+    public boolean onTouchEvent(MotionEvent event) {
+        super.onTouchEvent(event);
+        if (event.getPointerCount() != 1) {
+            return false;
+        }
+
+        ImageFilterDraw filter = (ImageFilterDraw) getCurrentFilter();
+
+        if (event.getAction() == MotionEvent.ACTION_DOWN) {
+
+            mTmpPoint[0] = event.getX();
+            mTmpPoint[1] = event.getY();
+            mToOrig.mapPoints(mTmpPoint);
+            float[] hsv = new float[3];
+            hsv[0] = (float) (360 * Math.random());
+            hsv[1] = 1;
+            hsv[2] = 1;
+            int col = Color.HSVToColor(0x88, hsv);
+            filter.startSection(col, mTmpPoint[0], mTmpPoint[1]);
+
+        }
+        if (event.getAction() == MotionEvent.ACTION_MOVE) {
+            int historySize = event.getHistorySize();
+            final int pointerCount = event.getPointerCount();
+            for (int h = 0; h < historySize; h++) {
+                int p = 0;
+                {
+                    mTmpPoint[0] = event.getHistoricalX(p, h);
+                    mTmpPoint[1] = event.getHistoricalY(p, h);
+                    mToOrig.mapPoints(mTmpPoint);
+                    filter.addPoint(mTmpPoint[0], mTmpPoint[1]);
+                }
+            }
+        }
+        if (event.getAction() == MotionEvent.ACTION_UP) {
+            mTmpPoint[0] = event.getX();
+            mTmpPoint[1] = event.getY();
+            mToOrig.mapPoints(mTmpPoint);
+            filter.endSection(mTmpPoint[0], mTmpPoint[1]);
+            this.resetImageCaches(this);
+
+        }
+        invalidate();
+        return true;
+    }
+
+    Matrix mRotateToScreen;
+    Matrix mToScreen;
+    Matrix mToOrig = new Matrix();
+    private void calcScreenMapping() {
+
+        GeometryMetadata geo = getImagePreset().mGeoData;
+        mToScreen = geo.getOriginalToScreen(false,
+                mImageLoader.getOriginalBounds().width(),
+                mImageLoader.getOriginalBounds().height(), getWidth(), getHeight());
+        mRotateToScreen = geo.getOriginalToScreen(true,
+                mImageLoader.getOriginalBounds().width(),
+                mImageLoader.getOriginalBounds().height(), getWidth(), getHeight());
+        mRotateToScreen.invert(mToOrig);
+        mToOrig.invert(mRotateToScreen);
+    }
+
+    @Override
+    public void onDraw(Canvas canvas) {
+        super.onDraw(canvas);
+
+        calcScreenMapping();
+
+        ImageFilterDraw filter = (ImageFilterDraw) getCurrentFilter();
+        filter.draw(canvas, mRotateToScreen);
+    }
+}