下面列出了android.graphics.RectF#offset ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
/**
* Configures the necessary {@link android.graphics.Matrix} transformation to `mTextureView`.
* This method should be called after the camera preview size is determined in
* setUpCameraOutputs and also the size of `mTextureView` is fixed.
*
* @param viewWidth The width of `mTextureView`
* @param viewHeight The height of `mTextureView`
*/
private void configureTransform(final int viewWidth, final int viewHeight) {
final Activity activity = getActivity();
if (null == textureView || null == previewSize || null == activity) {
return;
}
final int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
final Matrix matrix = new Matrix();
final RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
final RectF bufferRect = new RectF(0, 0, previewSize.getHeight(), previewSize.getWidth());
final float centerX = viewRect.centerX();
final float centerY = viewRect.centerY();
if (Surface.ROTATION_90 == rotation || Surface.ROTATION_270 == rotation) {
bufferRect.offset(centerX - bufferRect.centerX(), centerY - bufferRect.centerY());
matrix.setRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.FILL);
final float scale =
Math.max(
(float) viewHeight / previewSize.getHeight(),
(float) viewWidth / previewSize.getWidth());
matrix.postScale(scale, scale, centerX, centerY);
matrix.postRotate(90 * (rotation - 2), centerX, centerY);
} else if (Surface.ROTATION_180 == rotation) {
matrix.postRotate(180, centerX, centerY);
}
textureView.setTransform(matrix);
}
/**
* Configures the necessary {@link android.graphics.Matrix} transformation to `mTextureView`.
* This method should be called after the camera preview size is determined in
* setUpCameraOutputs and also the size of `mTextureView` is fixed.
*
* @param viewWidth The width of `mTextureView`
* @param viewHeight The height of `mTextureView`
*/
private void configureTransform(final int viewWidth, final int viewHeight) {
final Activity activity = getActivity();
if (null == textureView || null == previewSize || null == activity) {
return;
}
final int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
final Matrix matrix = new Matrix();
final RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
final RectF bufferRect = new RectF(0, 0, previewSize.getHeight(), previewSize.getWidth());
final float centerX = viewRect.centerX();
final float centerY = viewRect.centerY();
if (Surface.ROTATION_90 == rotation || Surface.ROTATION_270 == rotation) {
bufferRect.offset(centerX - bufferRect.centerX(), centerY - bufferRect.centerY());
matrix.setRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.FILL);
final float scale =
Math.max(
(float) viewHeight / previewSize.getHeight(),
(float) viewWidth / previewSize.getWidth());
matrix.postScale(scale, scale, centerX, centerY);
matrix.postRotate(90 * (rotation - 2), centerX, centerY);
} else if (Surface.ROTATION_180 == rotation) {
matrix.postRotate(180, centerX, centerY);
}
textureView.setTransform(matrix);
}
/**
* Configures the necessary {@link android.graphics.Matrix} transformation to `mTextureView`.
* This method should be called after the camera preview size is determined in
* setUpCameraOutputs and also the size of `mTextureView` is fixed.
*
* @param viewWidth The width of `mTextureView`
* @param viewHeight The height of `mTextureView`
*/
private void configureTransform(final int viewWidth, final int viewHeight) {
final Activity activity = getActivity();
if (null == textureView || null == previewSize || null == activity) {
return;
}
final int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
final Matrix matrix = new Matrix();
final RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
final RectF bufferRect = new RectF(0, 0, previewSize.getHeight(), previewSize.getWidth());
final float centerX = viewRect.centerX();
final float centerY = viewRect.centerY();
if (Surface.ROTATION_90 == rotation || Surface.ROTATION_270 == rotation) {
bufferRect.offset(centerX - bufferRect.centerX(), centerY - bufferRect.centerY());
matrix.setRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.FILL);
final float scale =
Math.max(
(float) viewHeight / previewSize.getHeight(),
(float) viewWidth / previewSize.getWidth());
matrix.postScale(scale, scale, centerX, centerY);
matrix.postRotate(90 * (rotation - 2), centerX, centerY);
} else if (Surface.ROTATION_180 == rotation) {
matrix.postRotate(180, centerX, centerY);
}
textureView.setTransform(matrix);
}
private void computeWindowBoundsInScreen(WindowState windowState, Rect outBounds) {
// Get the touchable frame.
Region touchableRegion = mTempRegion1;
windowState.getTouchableRegion(touchableRegion);
Rect touchableFrame = mTempRect;
touchableRegion.getBounds(touchableFrame);
// Move to origin as all transforms are captured by the matrix.
RectF windowFrame = mTempRectF;
windowFrame.set(touchableFrame);
windowFrame.offset(-windowState.mFrame.left, -windowState.mFrame.top);
// Map the frame to get what appears on the screen.
Matrix matrix = mTempMatrix;
populateTransformationMatrixLocked(windowState, matrix);
matrix.mapRect(windowFrame);
// Got the bounds.
outBounds.set((int) windowFrame.left, (int) windowFrame.top,
(int) windowFrame.right, (int) windowFrame.bottom);
}
/**
* Configures the necessary {@link Matrix} transformation to `mTextureView`.
* This method should be called after the camera preview size is determined in
* setUpCameraOutputs and also the size of `mTextureView` is fixed.
*
* @param viewWidth The width of `mTextureView`
* @param viewHeight The height of `mTextureView`
*/
private void configureTransform(final int viewWidth, final int viewHeight) {
Size previewSize = mSettings.getPreviewSize();
int rotation = Camera2Helper.getDisplayRotation(mContext);
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, previewSize.getHeight(), previewSize.getWidth());
float centerX = viewRect.centerX();
float centerY = viewRect.centerY();
if (Surface.ROTATION_90 == rotation || Surface.ROTATION_270 == rotation) {
bufferRect.offset(centerX - bufferRect.centerX(), centerY - bufferRect.centerY());
matrix.setRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.FILL);
float scale = Math.max(
(float) viewHeight / previewSize.getHeight(),
(float) viewWidth / previewSize.getWidth());
matrix.postScale(scale, scale, centerX, centerY);
matrix.postRotate(90 * (rotation - 2), centerX, centerY);
} else if (Surface.ROTATION_180 == rotation) {
matrix.postRotate(180, centerX, centerY);
}
mTextureView.setTransform(matrix);
}
/**
* Configures the necessary {@link android.graphics.Matrix} transformation to `mTextureView`.
* This method should be called after the camera preview size is determined in
* setUpCameraOutputs and also the size of `mTextureView` is fixed.
*
* @param viewWidth The width of `mTextureView`
* @param viewHeight The height of `mTextureView`
*/
public void configureTransform(int viewWidth, int viewHeight) {
Activity activity = getActivity();
if (null == mTextureView || null == mPreviewSize || null == activity) {
return;
}
int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, mPreviewSize.getHeight(), mPreviewSize.getWidth());
float centerX = viewRect.centerX();
float centerY = viewRect.centerY();
if (Surface.ROTATION_90 == rotation || Surface.ROTATION_270 == rotation) {
bufferRect.offset(centerX - bufferRect.centerX(), centerY - bufferRect.centerY());
matrix.setRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.FILL);
float scale = Math.max(
(float) viewHeight / mPreviewSize.getHeight(),
(float) viewWidth / mPreviewSize.getWidth());
matrix.postScale(scale, scale, centerX, centerY);
matrix.postRotate(90 * (rotation - 2), centerX, centerY);
} else if (Surface.ROTATION_180 == rotation) {
matrix.postRotate(180, centerX, centerY);
}
mTextureView.setTransform(matrix);
overlay.setRect(CameraFragmentUtil.getScanRect(scanSegment));
}
/**
* Configures the necessary {@link android.graphics.Matrix} transformation to `mTextureView`.
* This method should be called after the camera preview size is determined in
* setUpCameraOutputs and also the size of `mTextureView` is fixed.
*
* @param viewWidth The width of `mTextureView`
* @param viewHeight The height of `mTextureView`
*/
private void configureTransform(int viewWidth, int viewHeight) {
Activity activity = getActivity();
if (null == mTextureView || null == mPreviewSize || null == activity) {
return;
}
int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, mPreviewSize.getHeight(), mPreviewSize.getWidth());
float centerX = viewRect.centerX();
float centerY = viewRect.centerY();
if (Surface.ROTATION_90 == rotation || Surface.ROTATION_270 == rotation) {
bufferRect.offset(centerX - bufferRect.centerX(), centerY - bufferRect.centerY());
matrix.setRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.FILL);
float scale = Math.max(
(float) viewHeight / mPreviewSize.getHeight(),
(float) viewWidth / mPreviewSize.getWidth());
matrix.postScale(scale, scale, centerX, centerY);
matrix.postRotate(90 * (rotation - 2), centerX, centerY);
} else if (Surface.ROTATION_180 == rotation) {
matrix.postRotate(180, centerX, centerY);
}
mTextureView.setTransform(matrix);
}
/**
* Configures the necessary {@link android.graphics.Matrix} transformation to `mTextureView`.
* This method should be called after the camera preview size is determined in
* setUpCameraOutputs and also the size of `mTextureView` is fixed.
*
* @param viewWidth The width of `mTextureView`
* @param viewHeight The height of `mTextureView`
*/
private void configureTransform(final int viewWidth, final int viewHeight) {
final Activity activity = getActivity();
if (null == textureView || null == previewSize || null == activity) {
return;
}
final int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
final Matrix matrix = new Matrix();
final RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
final RectF bufferRect = new RectF(0, 0, previewSize.getHeight(), previewSize.getWidth());
final float centerX = viewRect.centerX();
final float centerY = viewRect.centerY();
if (Surface.ROTATION_90 == rotation || Surface.ROTATION_270 == rotation) {
bufferRect.offset(centerX - bufferRect.centerX(), centerY - bufferRect.centerY());
matrix.setRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.FILL);
final float scale =
Math.max(
(float) viewHeight / previewSize.getHeight(),
(float) viewWidth / previewSize.getWidth());
matrix.postScale(scale, scale, centerX, centerY);
matrix.postRotate(90 * (rotation - 2), centerX, centerY);
} else if (Surface.ROTATION_180 == rotation) {
matrix.postRotate(180, centerX, centerY);
}
textureView.setTransform(matrix);
}
/**
* Configures the necessary {@link Matrix} transformation to `mTextureView`.
* This method should be called after the camera preview size is determined in
* setUpCameraOutputs and also the size of `mTextureView` is fixed.
*
* @param viewWidth The width of `mTextureView`
* @param viewHeight The height of `mTextureView`
*/
private void configureTransform(int viewWidth, int viewHeight) {
Activity activity = getActivity();
if (null == mTextureView || null == mPreviewSize || null == activity) {
return;
}
int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, mPreviewSize.getHeight(), mPreviewSize.getWidth());
float centerX = viewRect.centerX();
float centerY = viewRect.centerY();
if (Surface.ROTATION_90 == rotation || Surface.ROTATION_270 == rotation) {
bufferRect.offset(centerX - bufferRect.centerX(), centerY - bufferRect.centerY());
matrix.setRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.FILL);
float scale = Math.max(
(float) viewHeight / mPreviewSize.getHeight(),
(float) viewWidth / mPreviewSize.getWidth());
matrix.postScale(scale, scale, centerX, centerY);
matrix.postRotate(90 * (rotation - 2), centerX, centerY);
} else if (Surface.ROTATION_180 == rotation) {
matrix.postRotate(180, centerX, centerY);
}
mTextureView.setTransform(matrix);
}
/**
* Configures the necessary {@link android.graphics.Matrix} transformation to `mTextureView`.
* This method should be called after the camera preview size is determined in
* setUpCameraOutputs and also the size of `mTextureView` is fixed.
*
* @param viewWidth The width of `mTextureView`
* @param viewHeight The height of `mTextureView`
*/
private void configureTransform(int viewWidth, int viewHeight) {
if (isViewAvailable()) {
if (null == activityView.getTextureView()) {
return;
}
int rotation = activityView.getWindowManager().getDefaultDisplay().getRotation();
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, previewSize.getHeight(), previewSize.getWidth());
float centerX = viewRect.centerX();
float centerY = viewRect.centerY();
if (Surface.ROTATION_90 == rotation || Surface.ROTATION_270 == rotation) {
bufferRect.offset(centerX - bufferRect.centerX(), centerY - bufferRect.centerY());
matrix.setRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.FILL);
float scale = Math.max(
(float) viewHeight / previewSize.getHeight(),
(float) viewWidth / previewSize.getWidth());
matrix.postScale(scale, scale, centerX, centerY);
matrix.postRotate(90 * (rotation - 2), centerX, centerY);
} else if (Surface.ROTATION_180 == rotation) {
matrix.postRotate(180, centerX, centerY);
}
activityView.getTextureView().setTransform(matrix);
}
}
/** Center move only changes the position of the crop window without changing the size. */
private void moveCenter(
RectF rect, float x, float y, RectF bounds, int viewWidth, int viewHeight, float snapRadius) {
float dx = x - rect.centerX();
float dy = y - rect.centerY();
if (rect.left + dx < 0
|| rect.right + dx > viewWidth
|| rect.left + dx < bounds.left
|| rect.right + dx > bounds.right) {
dx /= 1.05f;
mTouchOffset.x -= dx / 2;
}
if (rect.top + dy < 0
|| rect.bottom + dy > viewHeight
|| rect.top + dy < bounds.top
|| rect.bottom + dy > bounds.bottom) {
dy /= 1.05f;
mTouchOffset.y -= dy / 2;
}
rect.offset(dx, dy);
snapEdgesToBounds(rect, bounds, snapRadius);
}
public void setSceneXX(String scene)
{
if (currentSceneIsPriorToScene("4l"))
{
currNo++;
OBControl obj = objectDict.get(String.format("obj%d",currNo+1));
RectF f = obj.frame;
PointF currPos = obj.position();
PointF origPos = (PointF)obj.propertyValue("origpos");
PointF offset = OB_Maths.DiffPoints(origPos, currPos);
f.offset(offset.x, offset.y);
OBControl dottedline = objectDict.get("dottedline");
PointF pt = OBUtils.pointFromString(((Map<String,String>)dottedline.propertyValue("attrs")).get("pos"));
pt = OB_Maths.locationForRect(pt, f );
dottedline.setPosition(pt);
dottedline.show();
}
else
{
loadEvent(scene);
String s = eventAttributes.get("targetno");
if (s != null)
currNo = Integer.parseInt(s)-11;
}
}
/**
* Adjust top and bottom edges by current crop window width and the given aspect ratio, both top
* and bottom edges adjusts equally relative to center to keep aspect ratio to the width.
*/
private void adjustTopBottomByAspectRatio(RectF rect, RectF bounds, float aspectRatio) {
rect.inset(0, (rect.height() - rect.width() / aspectRatio) / 2);
if (rect.top < bounds.top) {
rect.offset(0, bounds.top - rect.top);
}
if (rect.bottom > bounds.bottom) {
rect.offset(0, bounds.bottom - rect.bottom);
}
}
private void invalidatePageSize(final PageAlign pageAlign, final Page page, final int width, final int height) {
final RectF pageBounds = calcPageBounds(pageAlign, page.getAspectRatio(), width, height);
// if the screen is larger than the page, center the page within the screen
final float pageWidth = pageBounds.width();
if (width > pageWidth) {
final float widthDelta = (width - pageWidth) / 2;
pageBounds.offset(widthDelta, 0);
}
final float pageHeight= pageBounds.height();
if (height > pageHeight) {
final float heightDelta = (height - pageHeight) / 2;
pageBounds.offset(0, heightDelta);
}
page.setBounds(pageBounds);
}
/**
* Adjust left and right edges by current crop window height and the given aspect ratio, both
* right and left edges adjusts equally relative to center to keep aspect ratio to the height.
*/
private void adjustLeftRightByAspectRatio(RectF rect, RectF bounds, float aspectRatio) {
rect.inset((rect.width() - rect.height() * aspectRatio) / 2, 0);
if (rect.left < bounds.left) {
rect.offset(bounds.left - rect.left, 0);
}
if (rect.right > bounds.right) {
rect.offset(bounds.right - rect.right, 0);
}
}
/** Check if edges have gone out of bounds (including snap margin), and fix if needed. */
private void snapEdgesToBounds(RectF edges, RectF bounds, float margin) {
if (edges.left < bounds.left + margin) {
edges.offset(bounds.left - edges.left, 0);
}
if (edges.top < bounds.top + margin) {
edges.offset(0, bounds.top - edges.top);
}
if (edges.right > bounds.right - margin) {
edges.offset(bounds.right - edges.right, 0);
}
if (edges.bottom > bounds.bottom - margin) {
edges.offset(0, bounds.bottom - edges.bottom);
}
}
private float calculateRevealCenterY(
@NonNull View dependency, @NonNull View child, @NonNull Positioning positioning) {
RectF dependencyBounds = tmpRectF1;
RectF childBounds = tmpRectF2;
calculateDependencyWindowBounds(dependency, dependencyBounds);
calculateWindowBounds(child, childBounds);
float translationY = calculateTranslationY(dependency, child, positioning);
childBounds.offset(0, -translationY);
return dependencyBounds.centerY() - childBounds.top;
}
public RectF viewToRegion(int offsetX, int offsetY){
if (!mIsRegion){
RectF rectF = getViewLocationRectF(mTargetView);
rectF.offset(offsetX,offsetY);
setRegion(rectF);
}
return mRegion;
}
private static void cornerArc(Path path, float cx, float cy, float r, float startAngle, float sweepAngle) {
final RectF ovalRect = new RectF(-r, -r, r, r);
ovalRect.offset(cx, cy);
path.arcTo(ovalRect, startAngle, sweepAngle);
}
void growBy(float dx, float dy) {
if (maintainAspectRatio) {
if (dx != 0) {
dy = dx / initialAspectRatio;
} else if (dy != 0) {
dx = dy * initialAspectRatio;
}
}
// Don't let the cropping rectangle grow too fast.
// Grow at most half of the difference between the image rectangle and
// the cropping rectangle.
RectF r = new RectF(cropRect);
if (dx > 0F && r.width() + 2 * dx > imageRect.width()) {
dx = (imageRect.width() - r.width()) / 2F;
if (maintainAspectRatio) {
dy = dx / initialAspectRatio;
}
}
if (dy > 0F && r.height() + 2 * dy > imageRect.height()) {
dy = (imageRect.height() - r.height()) / 2F;
if (maintainAspectRatio) {
dx = dy * initialAspectRatio;
}
}
r.inset(-dx, -dy);
// Don't let the cropping rectangle shrink too fast
final float widthCap = 25F;
if (r.width() < widthCap) {
r.inset(-(widthCap - r.width()) / 2F, 0F);
}
float heightCap = maintainAspectRatio
? (widthCap / initialAspectRatio)
: widthCap;
if (r.height() < heightCap) {
r.inset(0F, -(heightCap - r.height()) / 2F);
}
// Put the cropping rectangle inside the image rectangle
if (r.left < imageRect.left) {
r.offset(imageRect.left - r.left, 0F);
} else if (r.right > imageRect.right) {
r.offset(-(r.right - imageRect.right), 0F);
}
if (r.top < imageRect.top) {
r.offset(0F, imageRect.top - r.top);
} else if (r.bottom > imageRect.bottom) {
r.offset(0F, -(r.bottom - imageRect.bottom));
}
cropRect.set(r);
drawRect = computeLayout();
viewContext.invalidate();
}