android: fix handle and selection behaviour, clean-up

Change-Id: I1f4404b1beb8dc3d5f64c21443c8e50cefe6fc63

android/experimental/LOAndroid3/src/java/org/libreoffice/canvas/GraphicSelectionCanvasElement.java

@@ -9,6 +9,7 @@
 package org.libreoffice.canvas;
 
 import android.graphics.Canvas;
+import android.graphics.Color;
 import android.graphics.Paint;
 import android.graphics.PointF;
 import android.graphics.RectF;
@@ -16,12 +17,14 @@ import android.graphics.RectF;
 import org.libreoffice.LOKitShell;
 import org.mozilla.gecko.gfx.LayerView;
 
+import static org.libreoffice.canvas.GraphicSelectionHandleCanvasElement.HandlePosition;
+
 /**
  * This class is responsible to draw and reposition the selection
  * rectangle.
  */
 public class GraphicSelectionCanvasElement {
-    private final Paint mGraphicSelectionPaint;
+    private final Paint mPaint;
     public RectF mRectangle = new RectF();
     public RectF mScaledRectangle = new RectF();
     private RectF mDrawRectangle = new RectF();
@@ -31,17 +34,20 @@ public class GraphicSelectionCanvasElement {
     private GraphicSelectionHandleCanvasElement mHandles[] = new GraphicSelectionHandleCanvasElement[8];
     private GraphicSelectionHandleCanvasElement mDragHandle = null;
 
-    public GraphicSelectionCanvasElement(Paint graphicSelectionPaint) {
+    public GraphicSelectionCanvasElement() {
-        mGraphicSelectionPaint = graphicSelectionPaint;
+        mPaint = new Paint();
+        mPaint.setStyle(Paint.Style.STROKE);
+        mPaint.setColor(Color.BLACK);
+        mPaint.setStrokeWidth(2);
 
-        mHandles[0] = new GraphicSelectionHandleCanvasElement(mGraphicSelectionPaint);
+        mHandles[0] = new GraphicSelectionHandleCanvasElement(HandlePosition.TOP_LEFT);
-        mHandles[1] = new GraphicSelectionHandleCanvasElement(mGraphicSelectionPaint);
+        mHandles[1] = new GraphicSelectionHandleCanvasElement(HandlePosition.TOP);
-        mHandles[2] = new GraphicSelectionHandleCanvasElement(mGraphicSelectionPaint);
+        mHandles[2] = new GraphicSelectionHandleCanvasElement(HandlePosition.TOP_RIGHT);
-        mHandles[3] = new GraphicSelectionHandleCanvasElement(mGraphicSelectionPaint);
+        mHandles[3] = new GraphicSelectionHandleCanvasElement(HandlePosition.LEFT);
-        mHandles[4] = new GraphicSelectionHandleCanvasElement(mGraphicSelectionPaint);
+        mHandles[4] = new GraphicSelectionHandleCanvasElement(HandlePosition.RIGHT);
-        mHandles[5] = new GraphicSelectionHandleCanvasElement(mGraphicSelectionPaint);
+        mHandles[5] = new GraphicSelectionHandleCanvasElement(HandlePosition.BOTTOM_LEFT);
-        mHandles[6] = new GraphicSelectionHandleCanvasElement(mGraphicSelectionPaint);
+        mHandles[6] = new GraphicSelectionHandleCanvasElement(HandlePosition.BOTTOM);
-        mHandles[7] = new GraphicSelectionHandleCanvasElement(mGraphicSelectionPaint);
+        mHandles[7] = new GraphicSelectionHandleCanvasElement(HandlePosition.BOTTOM_RIGHT);
     }
 
     public void reposition(RectF scaledRectangle) {
@@ -69,13 +75,9 @@ public class GraphicSelectionCanvasElement {
     }
 
     public void draw(Canvas canvas) {
-        canvas.drawRect(mDrawRectangle, mGraphicSelectionPaint);
+        canvas.drawRect(mDrawRectangle, mPaint);
         for (GraphicSelectionHandleCanvasElement handle : mHandles) {
-            if (mType == DragType.MOVE || mType == DragType.EXTEND) {
+            handle.draw(canvas);
-                handle.drawSelected(canvas);
-            } else {
-                handle.draw(canvas);
-            }
         }
     }
 
@@ -85,6 +87,7 @@ public class GraphicSelectionCanvasElement {
         for (GraphicSelectionHandleCanvasElement handle : mHandles) {
             if (handle.contains(position.x, position.y)) {
                 mDragHandle = handle;
+                mDragHandle.select();
                 mType = DragType.EXTEND;
                 sendGraphicSelectionStart(handle.mPosition);
             }
@@ -99,15 +102,47 @@ public class GraphicSelectionCanvasElement {
 
     public void dragging(PointF position) {
         if (mType == DragType.MOVE) {
-
             float deltaX = position.x - mStartDragPosition.x;
             float deltaY = position.y - mStartDragPosition.y;
 
             mDrawRectangle = new RectF(mScaledRectangle);
             mDrawRectangle.offset(deltaX, deltaY);
         } else if (mType == DragType.EXTEND) {
-            mDrawRectangle = new RectF(mScaledRectangle);
+            adaptDrawRectangle(position.x, position.y);
-            mDrawRectangle.union(position.x, position.y);
+        }
+    }
+
+    private void adaptDrawRectangle(float x, float y) {
+        mDrawRectangle = new RectF(mScaledRectangle);
+        switch(mDragHandle.getHandlePosition()) {
+            case TOP_LEFT:
+                mDrawRectangle.left = x;
+                mDrawRectangle.top = y;
+                break;
+            case TOP:
+                mDrawRectangle.top = y;
+                break;
+            case TOP_RIGHT:
+                mDrawRectangle.right = x;
+                mDrawRectangle.top = y;
+                break;
+            case LEFT:
+                mDrawRectangle.left = x;
+                break;
+            case RIGHT:
+                mDrawRectangle.right = x;
+                break;
+            case BOTTOM_LEFT:
+                mDrawRectangle.left = x;
+                mDrawRectangle.bottom = y;
+                break;
+            case BOTTOM:
+                mDrawRectangle.bottom = y;
+                break;
+            case BOTTOM_RIGHT:
+                mDrawRectangle.right = x;
+                mDrawRectangle.bottom = y;
+                break;
         }
     }
 
@@ -116,6 +151,8 @@ public class GraphicSelectionCanvasElement {
         if (mDragHandle != null) {
             point.x = mDragHandle.mPosition.x;
             point.y = mDragHandle.mPosition.y;
+            mDragHandle.reset();
+            mDragHandle = null;
         } else {
             point.x = mStartDragPosition.x;
             point.y = mStartDragPosition.y;
@@ -127,7 +164,6 @@ public class GraphicSelectionCanvasElement {
         sendGraphicSelectionEnd(point);
 
         mDrawRectangle = mScaledRectangle;
-        mDragHandle = null;
         mType = DragType.NONE;
     }
 
@@ -147,6 +183,13 @@ public class GraphicSelectionCanvasElement {
         }
     }
 
+    public void reset() {
+        mDragHandle = null;
+        for (GraphicSelectionHandleCanvasElement handle : mHandles) {
+            handle.reset();
+        }
+    }
+
     public enum DragType {
         NONE,
         MOVE,

android/experimental/LOAndroid3/src/java/org/libreoffice/canvas/GraphicSelectionHandleCanvasElement.java

@@ -20,29 +20,39 @@ import android.graphics.RectF;
  * touched.
  */
 public class GraphicSelectionHandleCanvasElement {
+    private final HandlePosition mHandlePosition;
     public PointF mPosition = new PointF();
     private float mRadius = 20.0f;
-    private Paint mGraphicHandleFillPaint = new Paint();
+    private Paint mStrokePaint = new Paint();
-    private Paint mGraphicSelectionPaint = new Paint();
+    private Paint mFillPaint = new Paint();
-    private Paint mGraphicHandleSelectedFillPaint = new Paint();
+    private Paint mSelectedFillPaint = new Paint();
     private RectF mHitRect = new RectF();
+    private boolean mSelected = false;
 
-    public GraphicSelectionHandleCanvasElement(Paint graphicSelectionPaint) {
+    public GraphicSelectionHandleCanvasElement(HandlePosition position) {
-        mGraphicSelectionPaint = graphicSelectionPaint;
+        mHandlePosition = position;
 
-        mGraphicHandleFillPaint.setStyle(Paint.Style.FILL);
+        mStrokePaint.setStyle(Paint.Style.STROKE);
-        mGraphicHandleFillPaint.setColor(Color.WHITE);
+        mStrokePaint.setColor(Color.BLACK);
+        mStrokePaint.setStrokeWidth(3);
 
-        mGraphicHandleSelectedFillPaint.setStyle(Paint.Style.FILL);
+        mFillPaint.setStyle(Paint.Style.FILL);
-        mGraphicHandleSelectedFillPaint.setColor(Color.BLACK);
+        mFillPaint.setColor(Color.WHITE);
+
+        mSelectedFillPaint.setStyle(Paint.Style.FILL);
+        mSelectedFillPaint.setColor(Color.BLUE);
+    }
+
+    public HandlePosition getHandlePosition() {
+        return mHandlePosition;
     }
 
     public void draw(Canvas canvas) {
-        drawFilledCircle(canvas, mPosition.x, mPosition.y, mRadius, mGraphicSelectionPaint, mGraphicHandleFillPaint);
+        if (mSelected) {
-    }
+            drawFilledCircle(canvas, mPosition.x, mPosition.y, mRadius, mStrokePaint, mSelectedFillPaint);
-
+        } else {
-    public void drawSelected(Canvas canvas) {
+            drawFilledCircle(canvas, mPosition.x, mPosition.y, mRadius, mStrokePaint, mFillPaint);
-        drawFilledCircle(canvas, mPosition.x, mPosition.y, mRadius, mGraphicSelectionPaint, mGraphicHandleSelectedFillPaint);
+        }
     }
 
     private void drawFilledCircle(Canvas canvas, float x, float y, float radius, Paint strokePaint, Paint fillPaint) {
@@ -62,6 +72,25 @@ public class GraphicSelectionHandleCanvasElement {
     public boolean contains(float x, float y) {
         return mHitRect.contains(x, y);
     }
+
+    public void select() {
+        mSelected = true;
+    }
+
+    public void reset() {
+        mSelected = false;
+    }
+
+    public enum HandlePosition {
+        TOP_LEFT,
+        TOP,
+        TOP_RIGHT,
+        RIGHT,
+        BOTTOM_RIGHT,
+        BOTTOM,
+        BOTTOM_LEFT,
+        LEFT
+    }
 }
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

android/experimental/LOAndroid3/src/java/org/libreoffice/overlay/TextCursorView.java

@@ -49,8 +49,6 @@ public class TextCursorView extends View implements View.OnTouchListener {
     private Paint mSelectionPaint = new Paint();
     private boolean mSelectionsVisible;
 
-    private Paint mGraphicSelectionPaint = new Paint();
-
     private GraphicSelectionCanvasElement mGraphicSelection;
 
     private boolean mGraphicSelectionVisible;
@@ -88,11 +86,7 @@ public class TextCursorView extends View implements View.OnTouchListener {
             mSelectionPaint.setAlpha(50);
             mSelectionsVisible = false;
 
-            mGraphicSelectionPaint.setStyle(Paint.Style.STROKE);
+            mGraphicSelection = new GraphicSelectionCanvasElement();
-            mGraphicSelectionPaint.setColor(Color.BLACK);
-            mGraphicSelectionPaint.setStrokeWidth(2);
-
-            mGraphicSelection = new GraphicSelectionCanvasElement(mGraphicSelectionPaint);
 
             mGraphicSelectionVisible = false;
 
@@ -211,6 +205,8 @@ public class TextCursorView extends View implements View.OnTouchListener {
 
     public void showGraphicSelection() {
         mGraphicSelectionVisible = true;
+        mGraphicSelectionMove = false;
+        mGraphicSelection.reset();
         invalidate();
     }