android.graphics.Matrix.preScale()方法的使用及代码示例

x33g5p2x  于2022-01-24 转载在 其他  
字(8.2k)|赞(0)|评价(0)|浏览(225)

本文整理了Java中android.graphics.Matrix.preScale()方法的一些代码示例，展示了Matrix.preScale()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Matrix.preScale()方法的具体详情如下：
包路径：android.graphics.Matrix
类名称：Matrix
方法名：preScale

Matrix.preScale介绍

暂无

代码示例

代码示例来源：origin: CameraKit/blurkit-android

private Bitmap getBitmapForView(View src, float downscaleFactor) {
  Bitmap bitmap = Bitmap.createBitmap(
      (int) (src.getWidth() * downscaleFactor),
      (int) (src.getHeight() * downscaleFactor),
      Bitmap.Config.ARGB_8888
  );
  Canvas canvas = new Canvas(bitmap);
  Matrix matrix = new Matrix();
  matrix.preScale(downscaleFactor, downscaleFactor);
  canvas.setMatrix(matrix);
  src.draw(canvas);
  return bitmap;
}

代码示例来源：origin: koral--/android-gif-drawable

@Override
  public void onDraw(Canvas canvas, Paint paint, Bitmap buffer) {
    if (mCornerRadius == 0) {
      canvas.drawBitmap(buffer, null, mDstRectF, paint);
      return;
    }
    if (mShader == null) {
      mShader = new BitmapShader(buffer, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
      final Matrix shaderMatrix = new Matrix();
      shaderMatrix.setTranslate(mDstRectF.left, mDstRectF.top);
      shaderMatrix.preScale(mDstRectF.width() / buffer.getWidth(), mDstRectF.height() / buffer.getHeight());
      mShader.setLocalMatrix(shaderMatrix);
    }
    paint.setShader(mShader);
    canvas.drawRoundRect(mDstRectF, mCornerRadius, mCornerRadius, paint);
  }
}

代码示例来源：origin: scwang90/SmartRefreshLayout

matrix.preScale(sunScale, sunScale);
matrix.postRotate((isRefreshing ? -360 : 360) * mRotate * (isRefreshing ? 1 : SUN_INITIAL_ROTATE_GROWTH),
    sunRadius,

代码示例来源：origin: Aspsine/SwipeToLoadLayout

matrix.preScale(sunScale, sunScale);

代码示例来源：origin: CameraKit/blurkit-android

/**
 * Users a View reference to create a bitmap, and downscales it using the passed in factor.
 * Uses a Rect to crop the view into the bitmap.
 * @return Bitmap made from view, downscaled by downscaleFactor.
 * @throws NullPointerException
 */
private Bitmap getDownscaledBitmapForView(View view, Rect crop, float downscaleFactor) throws BlurKitException, NullPointerException {
  View screenView = view.getRootView();
  int width = (int) (crop.width() * downscaleFactor);
  int height = (int) (crop.height() * downscaleFactor);
  if (screenView.getWidth() <= 0 || screenView.getHeight() <= 0 || width <= 0 || height <= 0) {
    throw new BlurKitException("No screen available (width or height = 0)");
  }
  float dx = -crop.left * downscaleFactor;
  float dy = -crop.top * downscaleFactor;
  Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
  Canvas canvas = new Canvas(bitmap);
  Matrix matrix = new Matrix();
  matrix.preScale(downscaleFactor, downscaleFactor);
  matrix.postTranslate(dx, dy);
  canvas.setMatrix(matrix);
  screenView.draw(canvas);
  return bitmap;
}

代码示例来源：origin: square/picasso

matrix.preScale(scaleX, scaleY);
float scale = widthRatio < heightRatio ? widthRatio : heightRatio;
if (shouldResize(onlyScaleDown, inWidth, inHeight, targetWidth, targetHeight)) {
 matrix.preScale(scale, scale);
  targetHeight != 0 ? targetHeight / (float) inHeight : targetWidth / (float) inWidth;
if (shouldResize(onlyScaleDown, inWidth, inHeight, targetWidth, targetHeight)) {
 matrix.preScale(sx, sy);

代码示例来源：origin: airbnb/lottie-android

matrix.preScale(scale, scale);
compositionLayer.draw(canvas, matrix, alpha);
L.endSection("Drawable#draw");

代码示例来源：origin: airbnb/lottie-android

/**
 * TODO: see if we can use this for the main {@link #getMatrix()} method.
 */
public Matrix getMatrixForRepeater(float amount) {
 if (isIdentity) {
  return matrix;
 }
 PointF position = this.position.getValue();
 PointF anchorPoint = this.anchorPoint.getValue();
 ScaleXY scale = this.scale.getValue();
 float rotation = this.rotation.getValue();
 matrix.reset();
 matrix.preTranslate(position.x * amount, position.y * amount);
 matrix.preScale(
   (float) Math.pow(scale.getScaleX(), amount),
    (float) Math.pow(scale.getScaleY(), amount));
 matrix.preRotate(rotation * amount, anchorPoint.x, anchorPoint.y);
 return matrix;
}

代码示例来源：origin: koral--/android-gif-drawable

case FIT_CENTER:
  transform.setRectToRect(src, dst, Matrix.ScaleToFit.CENTER);
  transform.preScale(scaleX, scaleY);
  break;
case FIT_END:
  transform.setRectToRect(src, dst, Matrix.ScaleToFit.END);
  transform.preScale(scaleX, scaleY);
  break;
case FIT_START:
  transform.setRectToRect(src, dst, Matrix.ScaleToFit.START);
  transform.preScale(scaleX, scaleY);
  break;
case FIT_XY:
case MATRIX:
  transform.set(mTransform);
  transform.preScale(scaleX, scaleY);
  break;

代码示例来源：origin: siyamed/android-shape-imageview

sy = np.numbers.get(1);
matrix.preScale(sx, sy);

代码示例来源：origin: airbnb/lottie-android

private void drawCharacterAsGlyph(
  FontCharacter character,
  Matrix parentMatrix,
  float fontScale,
  DocumentData documentData,
  Canvas canvas) {
 List<ContentGroup> contentGroups = getContentsForCharacter(character);
 for (int j = 0; j < contentGroups.size(); j++) {
  Path path = contentGroups.get(j).getPath();
  path.computeBounds(rectF, false);
  matrix.set(parentMatrix);
  matrix.preTranslate(0, (float) -documentData.baselineShift * Utils.dpScale());
  matrix.preScale(fontScale, fontScale);
  path.transform(matrix);
  if (documentData.strokeOverFill) {
   drawGlyph(path, fillPaint, canvas);
   drawGlyph(path, strokePaint, canvas);
  } else {
   drawGlyph(path, strokePaint, canvas);
   drawGlyph(path, fillPaint, canvas);
  }
 }
}

代码示例来源：origin: robolectric/robolectric

@Test
public void testPreScale() {
 final Matrix matrix1 = new Matrix();
 matrix1.preScale(2.0f, 2.0f);
 assertPointsEqual(mapPoint(matrix1, 1.0f, 1.0f), new PointF(2.0f, 2.0f));
 matrix1.preScale(2.0f, 2.0f);
 assertPointsEqual(mapPoint(matrix1, 1.0f, 1.0f), new PointF(4.0f, 4.0f));
 final Matrix matrix2 = new Matrix();
 matrix2.preScale(2.0f, 2.0f, 1.0f, 1.0f);
 assertPointsEqual(mapPoint(matrix2, 1.0f, 1.0f), new PointF(1.0f, 1.0f));
 matrix2.setTranslate(1.0f, 2.0f);
 matrix2.preScale(2.0f, 2.0f, 1.0f, 1.0f);
 assertPointsEqual(mapPoint(matrix2, 1.0f, 1.0f), new PointF(2.0f, 3.0f));
}

代码示例来源：origin: jMonkeyEngine/jmonkeyengine

flipMat.preScale(1.0f, -1.0f);
Bitmap newBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), flipMat, false);
bitmap.recycle();

代码示例来源：origin: Rukey7/MvpApp

matrix.preScale(mVideoScale, mVideoScale);
matrix.postTranslate(mScreenOrWidth * (1 - mVideoScale) / 2,
    mScreenOrHeight * (1 - mVideoScale) / 2);

代码示例来源：origin: robolectric/robolectric

@Test
public void set_shouldAddOpsToMatrix() {
 final Matrix matrix = new Matrix();
 matrix.setScale(1, 1);
 matrix.preScale(2, 2, 2, 2);
 matrix.postScale(3, 3, 3, 3);
 final ShadowMatrix shadow = shadowOf(matrix);
 assertThat(shadow.getSetOperations().get("scale")).isEqualTo("1.0 1.0");
 assertThat(shadow.getPreOperations().get(0)).isEqualTo("scale 2.0 2.0 2.0 2.0");
 assertThat(shadow.getPostOperations().get(0)).isEqualTo("scale 3.0 3.0 3.0 3.0");
}

代码示例来源：origin: robolectric/robolectric

@Test
public void testPreConcat() {
 final Matrix matrix = new Matrix();
 matrix.preScale(2.0f, 3.0f);
 final Matrix translateMatrix = new Matrix();
 translateMatrix.setTranslate(5.0f, 7.0f);
 matrix.preConcat(translateMatrix);
 assertPointsEqual(mapPoint(matrix, 2.0f, 2.0f), new PointF(14.0f, 27.0f));
 final Matrix rotateMatrix = new Matrix();
 rotateMatrix.setRotate(90.0f);
 matrix.preConcat(rotateMatrix);
 assertPointsEqual(mapPoint(matrix, 2.0f, 2.0f), new PointF(6.0f, 27.0f));
}

代码示例来源：origin: airbnb/lottie-android

public Matrix getMatrix() {
 if (isIdentity) {
  return matrix;
 }
 matrix.reset();
 PointF position = this.position.getValue();
 if (position.x != 0 || position.y != 0) {
  matrix.preTranslate(position.x, position.y);
 }
 float rotation = ((FloatKeyframeAnimation) this.rotation).getFloatValue();
 if (rotation != 0f) {
  matrix.preRotate(rotation);
 }
 ScaleXY scaleTransform = this.scale.getValue();
 if (scaleTransform.getScaleX() != 1f || scaleTransform.getScaleY() != 1f) {
  matrix.preScale(scaleTransform.getScaleX(), scaleTransform.getScaleY());
 }
 PointF anchorPoint = this.anchorPoint.getValue();
 if (anchorPoint.x != 0 || anchorPoint.y != 0) {
  matrix.preTranslate(-anchorPoint.x, -anchorPoint.y);
 }
 return matrix;
}

代码示例来源：origin: jingle1267/android-utils

/**
 * 水平翻转处理
 *
 * @param bitmap 原图
 * @return 水平翻转后的图片
 */
public static Bitmap reverseByHorizontal(Bitmap bitmap) {
  Matrix matrix = new Matrix();
  matrix.preScale(-1, 1);
  return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(),
      bitmap.getHeight(), matrix, false);
}

代码示例来源：origin: jingle1267/android-utils

/**
 * 垂直翻转处理
 *
 * @param bitmap 原图
 * @return 垂直翻转后的图片
 */
public static Bitmap reverseByVertical(Bitmap bitmap) {
  Matrix matrix = new Matrix();
  matrix.preScale(1, -1);
  return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(),
      bitmap.getHeight(), matrix, false);
}

代码示例来源：origin: Blizzard-liu/AndroidUtils

/**
 * 水平翻转处理
 *
 * @param bitmap 原图
 * @return 水平翻转后的图片
 */
public static Bitmap reverseByHorizontal(Bitmap bitmap) {
  Matrix matrix = new Matrix();
  matrix.preScale(-1, 1);
  return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(),
      bitmap.getHeight(), matrix, false);
}

内容来源于网络，如有侵权，请联系作者删除！

Matrix

相关文章

    查看更多

    热门标签

    更多
    JavaquerypythonNode开发语言requestUtil数据库Table后端算法LoggerMessageElementParser

    最新文章

    更多
    • 蜀ICP备2022004421号-2 NULL123 https://www.null123.com © All rights reserved
    • 本站内容来源互联网,如果侵犯您的权益请联系我们删除, 联系方式：448109455@qq.com