@Override
public boolean onScale(ScaleGestureDetector detector) {
if (ignoreDetectorEvents()) return false;
// It is possible that pinchBegin() was never called when we reach here.
// This happens when webkit handles the 2nd touch down event. That causes
// ContentView to ignore the onScaleBegin() call. And if webkit does not
// handle the touch move events afterwards, we will face a situation
// that pinchBy() is called without any pinchBegin().
// To solve this problem, we call pinchBegin() here if it is never called.
if (!mPinchEventSent) {
mContentViewCore
.getContentViewGestureHandler()
.pinchBegin(
detector.getEventTime(), (int) detector.getFocusX(), (int) detector.getFocusY());
mPinchEventSent = true;
}
mContentViewCore
.getContentViewGestureHandler()
.pinchBy(
detector.getEventTime(),
(int) detector.getFocusX(),
(int) detector.getFocusY(),
detector.getScaleFactor());
return true;
}
@Override
public boolean onScale(ScaleGestureDetector detector) {
// calc scale factor
scaleFactor *= detector.getScaleFactor();
scaleFactor =
Math.max(
SessionView.MIN_SCALE_FACTOR, Math.min(scaleFactor, SessionView.MAX_SCALE_FACTOR));
sessionView.setZoom(scaleFactor);
if (!sessionView.isAtMinZoom() && !sessionView.isAtMaxZoom()) {
// transform scroll origin to the new zoom space
float transOriginX = scrollView.getScrollX() * detector.getScaleFactor();
float transOriginY = scrollView.getScrollY() * detector.getScaleFactor();
// transform center point to the zoomed space
float transCenterX =
(scrollView.getScrollX() + detector.getFocusX()) * detector.getScaleFactor();
float transCenterY =
(scrollView.getScrollY() + detector.getFocusY()) * detector.getScaleFactor();
// scroll by the difference between the distance of the transformed center/origin point and
// their old distance (focusX/Y)
scrollView.scrollBy(
(int) ((transCenterX - transOriginX) - detector.getFocusX()),
(int) ((transCenterY - transOriginY) - detector.getFocusY()));
}
return true;
}
@Override
public boolean onScale(ScaleGestureDetector detector) {
float mScaleFactor = detector.getScaleFactor();
float origScale = saveScale;
saveScale *= mScaleFactor;
if (saveScale > maxScale) {
saveScale = maxScale;
mScaleFactor = maxScale / origScale;
} else if (saveScale < minScale) {
saveScale = minScale;
mScaleFactor = minScale / origScale;
}
if (origWidth * saveScale <= viewWidth || origHeight * saveScale <= viewHeight)
matrix.postScale(mScaleFactor, mScaleFactor, viewWidth / 2, viewHeight / 2);
else matrix.postScale(mScaleFactor, mScaleFactor, detector.getFocusX(), detector.getFocusY());
fixTrans();
return true;
}
public boolean onScale(ScaleGestureDetector detector) {
mScale *= detector.getScaleFactor();
mFocusX = detector.getFocusX();
mFocusY = detector.getFocusY();
invalidate();
return true;
}
@Override
public boolean onScale(ScaleGestureDetector detector) {
float mScaleFactor = mImageViewBase.getScaleFactor();
float oldScaleFactor = mScaleFactor;
mScaleFactor *= detector.getScaleFactor();
// Don't let the object get too small or too large.
float minValue =
Math.min(
(((float) mImageViewBase.getFrameWidth()) / mImageViewBase.getImageWidth()),
(((float) mImageViewBase.getFrameHeigth()) / mImageViewBase.getImageHeight()));
mScaleFactor = Math.max(minValue, Math.min(mScaleFactor, 10.0f));
mImageViewBase.setScaleFactor(mScaleFactor);
// let the old center remain on the center
int xPos = mImageViewBase.getImageXPosition();
int yPos = mImageViewBase.getImageYPosition();
float focusX = detector.getFocusX() / oldScaleFactor - xPos;
float focusY = detector.getFocusY() / oldScaleFactor - yPos;
xPos = (int) ((oldScaleFactor / mScaleFactor) * (focusX + xPos) - focusX);
yPos = (int) ((oldScaleFactor / mScaleFactor) * (focusY + yPos) - focusY);
// check if we meet border
xPos = checkBordersX(mScaleFactor, xPos);
yPos = checkBordersY(mScaleFactor, yPos);
mImageViewBase.setImageXPosition(xPos);
mImageViewBase.setImageYPosition(yPos);
return true;
}
public boolean onScale(ScaleGestureDetector detector) {
// the velocity of the pinch in scale factor per ms
float velocity =
(detector.getCurrentSpan() - detector.getPreviousSpan()) / detector.getTimeDelta();
float currentSpan = detector.getCurrentSpanX();
float prevSpan = detector.getPreviousSpanX();
double diff = Math.abs(currentSpan - prevSpan);
/*
* If Shove is in progress do not handle scale
* If previous scale is handled then keep on handling scale
* else give some buffer for shove to be processed
*/
if (mDoubleTapScale
|| mScaleHandled
|| (!mShoveHandled
&& diff
> PINCH_THRESHOLD
* Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels))) {
mScaleHandled = true;
float focusX = mDoubleTapScale ? mapView.getWidth() * 0.5f : detector.getFocusX();
float focusY = mDoubleTapScale ? mapView.getHeight() * 0.5f : detector.getFocusY();
mLastDoubleGestureTime = detector.getEventTime();
handlePinchGesture(focusX, focusY, detector.getScaleFactor(), velocity);
return true;
}
mScaleHandled = false;
return false;
}
public boolean onScale(ScaleGestureDetector detector) {
float previousScale = mScale;
float scale_factor = mReflow ? REFLOW_SCALE_FACTOR : 1.0f;
float min_scale = MIN_SCALE * scale_factor;
float max_scale = MAX_SCALE * scale_factor;
mScale = Math.min(Math.max(mScale * detector.getScaleFactor(), min_scale), max_scale);
if (mReflow) {
applyToChildren(
new ViewMapper() {
@Override
void applyToView(View view) {
onScaleChild(view, mScale);
}
});
} else {
float factor = mScale / previousScale;
View v = mChildViews.get(mCurrent);
if (v != null) {
// Work out the focus point relative to the view top left
int viewFocusX = (int) detector.getFocusX() - (v.getLeft() + mXScroll);
int viewFocusY = (int) detector.getFocusY() - (v.getTop() + mYScroll);
// Scroll to maintain the focus point
mXScroll += viewFocusX - viewFocusX * factor;
mYScroll += viewFocusY - viewFocusY * factor;
requestLayout();
}
}
return true;
}
@Override
public boolean onScale(ScaleGestureDetector detector) {
Logger.i(
TAG,
"onScale: "
+ detector.getFocusX()
+ "x"
+ detector.getFocusY()
+ " "
+ detector.getScaleFactor());
float scale = detector.getScaleFactor();
if (mVisibleGrid == GRID_SMALL && scale > 1 && scale < 1.33) {
mSmallRecView.setScaleX(scale);
mSmallRecView.setScaleY(scale);
float alpha = (1.33f - scale) / 0.33f;
mSmallRecView.setAlpha(alpha);
mBigRecView.setAlpha(1 - alpha);
} else if (mVisibleGrid == GRID_BIG && scale < 1 && scale > 0.75) {
mBigRecView.setScaleX(scale);
mBigRecView.setScaleY(scale);
float alpha = (scale - 0.75f) / 0.25f;
mSmallRecView.setAlpha(1 - alpha);
mBigRecView.setAlpha(alpha);
}
return false;
}
@Override
public boolean onScale(ScaleGestureDetector detector) {
float nScale = mScaleFactor * detector.getScaleFactor();
if ((nScale <= 3f && nScale >= 1f)) { // can be better, but how ?
float final_x =
(((((screenWidth * nScale) - screenWidth)) / nScale)
- ((((screenWidth * mScaleFactor) - screenWidth)) / mScaleFactor))
* detector.getFocusX()
/ screenWidth;
float final_y =
(((((screenHeight * nScale) - screenHeight)) / nScale)
- ((((screenHeight * mScaleFactor) - screenHeight)) / mScaleFactor))
* detector.getFocusX()
/ screenHeight;
relativeScroll(final_x, final_y);
}
mScaleFactor = nScale;
mScaleFactor = Math.max(1.0f, Math.min(mScaleFactor, 3.0f));
invalidate();
return true;
}
@Override
public boolean onScaleBegin(ScaleGestureDetector detector) {
Logger.i(
TAG,
"onScaleBegin: "
+ detector.getFocusX()
+ "x"
+ detector.getFocusY()
+ " "
+ detector.getScaleFactor());
return true;
}
@Override
public boolean onScale(ScaleGestureDetector detector) {
scaleImage(detector.getScaleFactor(), detector.getFocusX(), detector.getFocusY(), true);
//
// OnTouchImageViewListener is set: TouchImageView pinch zoomed by user.
//
if (touchImageViewListener != null) {
touchImageViewListener.onMove();
}
return true;
}
@Override
public boolean onScale(ScaleGestureDetector detector) {
float scaleFactor = detector.getScaleFactor();
this.m.setZoomOffsetX((int) detector.getFocusX());
this.m.setZoomOffsetY((int) detector.getFocusY());
double relPosX = this.v.toAbsoluteX(this.m.getZoomOffsetX());
double relPosY = this.v.toAbsoluteY(this.m.getZoomOffsetY());
this.m.updateZoomLevel(scaleFactor, v.getWidth(), v.getHeight(), relPosX, relPosY);
// return super.onScale(detector);
return true;
}
@Override
public boolean onScale(ScaleGestureDetector detector) {
float scale = getScale();
float scaleFactor = detector.getScaleFactor();
if ((getDrawable() != null)
&& (!(((scale >= maxScale) && (scaleFactor > 1f))
|| ((scale <= 0.75) && (scaleFactor < 1f))))) {
suppMatrix.postScale(scaleFactor, scaleFactor, detector.getFocusX(), detector.getFocusY());
checkAndDisplayMatrix();
}
return true;
}
@Override
public boolean onScale(ScaleGestureDetector detector) {
float oldScaleFactor = getCanvasCamera().getScale();
float scaleFactor = oldScaleFactor * detector.getScaleFactor();
scaleFactor = Math.max(MIN_ZOOM, Math.min(scaleFactor, MAX_ZOOM));
if (scaleFactor != oldScaleFactor) {
float scaleDifference = scaleFactor / oldScaleFactor;
float zoomTranslationX = (1 - scaleDifference) * detector.getFocusX() / scaleFactor;
float zoomTranslationY = (1 - scaleDifference) * detector.getFocusY() / scaleFactor;
getCanvasCamera()
.setScaleAndRelativeTranslate(scaleFactor, zoomTranslationX, zoomTranslationY);
invalidate();
}
return true;
}
private boolean judgePinch(ScaleGestureDetector detector) {
boolean res = false;
float curDist = detector.getCurrentSpan();
float preDist = detector.getPreviousSpan();
pinch = preDist - curDist;
if ((curDist < preDist) && (pinch > PINCH_THRESHOLD)) {
res = true;
gestureName = GESTURE_PINCH;
focus_x = detector.getFocusX();
focus_y = detector.getFocusY();
gestureLabel.setText(gestureName + "\n x:" + focus_x + " y:" + focus_y + "\npinch:" + pinch);
}
return res;
}
@SuppressWarnings("unused")
@Override
public boolean onScale(ScaleGestureDetector detector) {
float span = detector.getCurrentSpan() - detector.getPreviousSpan();
float targetScale = mCurrentScaleFactor * detector.getScaleFactor();
if (mScaleEnabled) {
targetScale = Math.min(getMaxZoom(), Math.max(targetScale, MIN_ZOOM));
zoomTo(targetScale, detector.getFocusX(), detector.getFocusY());
mCurrentScaleFactor = Math.min(getMaxZoom(), Math.max(targetScale, MIN_ZOOM));
mDoubleTapDirection = 1;
invalidate();
return true;
}
return false;
}
@Override
public boolean onScaleBegin(ScaleGestureDetector scaleGestureDetector) {
float x = scaleGestureDetector.getFocusX();
float y = scaleGestureDetector.getFocusY();
int index = getActiveIndexByXY(x, y);
if (index >= 0) {
mActiveIndex = index;
mScaleFactor = 1.f;
Figure f = mFigures.get(mActiveIndex);
origX = f.x;
origY = f.y;
origWidth = f.width;
origHeight = f.height;
return true;
}
return false;
}
/** Called when the user is in the process of pinch-zooming. */
@Override
public boolean onScale(ScaleGestureDetector detector) {
if (!mSwipePinchDetector.isPinching()) {
return false;
}
if (Math.abs(detector.getScaleFactor() - 1) < MIN_ZOOM_DELTA) {
return false;
}
float scaleFactor = detector.getScaleFactor();
synchronized (mRenderData) {
mRenderData.transform.postScale(
scaleFactor, scaleFactor, detector.getFocusX(), detector.getFocusY());
}
repositionImageWithZoom();
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) {
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
public boolean onScale(ScaleGestureDetector detector) {
Log.i(TAG, "onScale");
float previousScale = mScale;
mScale = Math.min(Math.max(mScale * detector.getScaleFactor(), MIN_SCALE), MAX_SCALE);
float factor = mScale / previousScale;
View v = mChildViews.get(mCurrent);
if (v != null) {
// Work out the focus point relative to the view top left
int viewFocusX = (int) detector.getFocusX() - (v.getLeft() + mXScroll);
int viewFocusY = (int) detector.getFocusY() - (v.getTop() + mYScroll);
// Scroll to maintain the focus point
mXScroll += viewFocusX - viewFocusX * factor;
mYScroll += viewFocusY - viewFocusY * factor;
requestLayout();
}
return true;
}
@Override
public boolean onScale(ScaleGestureDetector detector) {
float mScaleFactor = detector.getScaleFactor();
float origScale = mSaveScale;
mSaveScale *= mScaleFactor;
if (mSaveScale > mMaxScale) {
mSaveScale = mMaxScale;
mScaleFactor = mMaxScale / origScale;
} else if (mSaveScale < mMinScale) {
mSaveScale = mMinScale;
mScaleFactor = mMinScale / origScale;
}
if (mOrigWidth * mSaveScale <= mViewWidth || mOrigHeight * mSaveScale <= mViewHeight)
mMatrix.postScale(mScaleFactor, mScaleFactor, mViewWidth / 2, mViewHeight / 2);
else
mMatrix.postScale(mScaleFactor, mScaleFactor, detector.getFocusX(), detector.getFocusY());
fixTrans();
return true;
}
//// TODO: 16/12/15 Still get better method to judge the rotate gesture
private boolean judgeRotate(ScaleGestureDetector detector) {
boolean res = false;
double preDistX = detector.getPreviousSpanX();
double preDistY = detector.getPreviousSpanY();
double curDistX = detector.getCurrentSpanX();
double curDistY = detector.getCurrentSpanY();
double atanPre = Math.atan2(preDistY, preDistX);
double atanCur = Math.atan2(curDistY, curDistX);
rotate = atanCur - atanPre;
if (Math.abs(rotate) > ROTATE_THRESHOLD) {
res = true;
gestureName = GESTURE_ROTATE;
focus_x = detector.getFocusX();
focus_y = detector.getFocusY();
gestureLabel.setText(
gestureName + "\n x:" + focus_x + " y:" + focus_y + "\ndeltaAngel:" + rotate);
}
return res;
}
@SuppressLint("NewApi")
@Override
public boolean onScale(ScaleGestureDetector detector) {
float scale = getScale();
float scaleFactor = detector.getScaleFactor();
if (getDrawable() == null) return true;
/** 缩放的范围控制 */
if ((scale < SCALE_MAX && scaleFactor > 1.0f) || (scale > initScale && scaleFactor < 1.0f)) {
/** 最大值最小值判断 */
if (scaleFactor * scale < initScale) {
scaleFactor = initScale / scale;
}
if (scaleFactor * scale > SCALE_MAX) {
scaleFactor = SCALE_MAX / scale;
}
/** 设置缩放比例 */
mScaleMatrix.postScale(scaleFactor, scaleFactor, detector.getFocusX(), detector.getFocusY());
checkBorderAndCenterWhenScale();
setImageMatrix(mScaleMatrix);
}
return true;
}
public boolean onScale(ScaleGestureDetector paramScaleGestureDetector) {
float f = paramScaleGestureDetector.getScaleFactor() * this.aAK.getScale();
this.aAK.a(f, paramScaleGestureDetector.getFocusX(), paramScaleGestureDetector.getFocusY());
return true;
}
@Override
public boolean onScale(ScaleGestureDetector detector) {
mListener.onScale(
detector.getScaleFactor(), detector.getFocusX(), detector.getFocusY());
return true;
}
@Override
public boolean onScaleBegin(ScaleGestureDetector detector) {
return mListener.onScaleBegin(detector.getFocusX(), detector.getFocusY());
}
@Override
public boolean onScale(ScaleGestureDetector detector) {
PostScale(detector.getScaleFactor(), detector.getFocusX(), detector.getFocusY());
return false;
}
