diff options
author | steckbrief <steckbrief@chefmail.de> | 2015-12-04 23:19:33 +0100 |
---|---|---|
committer | steckbrief <steckbrief@chefmail.de> | 2015-12-04 23:19:33 +0100 |
commit | 734511b0fa15fa6ceb88c6b0ab4791139f7ffc8d (patch) | |
tree | ae49823ebe987a260a7432292700a5918b26953e /libs/SwipyRefreshLayout/src/main/java/com/orangegangsters/github/swipyrefreshlayout/library/MaterialProgressDrawable.java | |
parent | 9265d6718e83e2d8d29809cbec4f8fb1f3a29960 (diff) | |
parent | 0086d5dc80dd95b1e8e4dcfe2d3d3090d260bb88 (diff) |
Merge remote-tracking branch 'remotes/origin/trz/rename' into trz/rebase
Diffstat (limited to 'libs/SwipyRefreshLayout/src/main/java/com/orangegangsters/github/swipyrefreshlayout/library/MaterialProgressDrawable.java')
-rw-r--r-- | libs/SwipyRefreshLayout/src/main/java/com/orangegangsters/github/swipyrefreshlayout/library/MaterialProgressDrawable.java | 722 |
1 files changed, 722 insertions, 0 deletions
diff --git a/libs/SwipyRefreshLayout/src/main/java/com/orangegangsters/github/swipyrefreshlayout/library/MaterialProgressDrawable.java b/libs/SwipyRefreshLayout/src/main/java/com/orangegangsters/github/swipyrefreshlayout/library/MaterialProgressDrawable.java new file mode 100644 index 00000000..c7eef8c1 --- /dev/null +++ b/libs/SwipyRefreshLayout/src/main/java/com/orangegangsters/github/swipyrefreshlayout/library/MaterialProgressDrawable.java @@ -0,0 +1,722 @@ +/* + * Copyright (C) 2014 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.orangegangsters.github.swipyrefreshlayout.library; + +import android.view.animation.AccelerateDecelerateInterpolator; +import android.view.animation.Interpolator; +import android.view.animation.Animation; +import android.view.animation.LinearInterpolator; +import android.view.animation.Transformation; +import android.content.Context; +import android.content.res.Resources; +import android.graphics.Canvas; +import android.graphics.Color; +import android.graphics.ColorFilter; +import android.graphics.Paint; +import android.graphics.Paint.Style; +import android.graphics.Path; +import android.graphics.PixelFormat; +import android.graphics.Rect; +import android.graphics.RectF; +import android.graphics.drawable.Drawable; +import android.graphics.drawable.Animatable; +import android.support.annotation.IntDef; +import android.support.annotation.NonNull; +import android.util.DisplayMetrics; +import android.view.View; + +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.ArrayList; + +/** + * Fancy progress indicator for Material theme. + * + * @hide + */ +class MaterialProgressDrawable extends Drawable implements Animatable { + private static final Interpolator LINEAR_INTERPOLATOR = new LinearInterpolator(); + private static final Interpolator END_CURVE_INTERPOLATOR = new EndCurveInterpolator(); + private static final Interpolator START_CURVE_INTERPOLATOR = new StartCurveInterpolator(); + private static final Interpolator EASE_INTERPOLATOR = new AccelerateDecelerateInterpolator(); + + @Retention(RetentionPolicy.CLASS) + @IntDef({LARGE, DEFAULT}) + public @interface ProgressDrawableSize {} + // Maps to ProgressBar.Large style + static final int LARGE = 0; + // Maps to ProgressBar default style + static final int DEFAULT = 1; + + // Maps to ProgressBar default style + private static final int CIRCLE_DIAMETER = 40; + private static final float CENTER_RADIUS = 8.75f; //should add up to 10 when + stroke_width + private static final float STROKE_WIDTH = 2.5f; + + // Maps to ProgressBar.Large style + private static final int CIRCLE_DIAMETER_LARGE = 56; + private static final float CENTER_RADIUS_LARGE = 12.5f; + private static final float STROKE_WIDTH_LARGE = 3f; + + private final int[] COLORS = new int[] { + Color.BLACK + }; + + /** The duration of a single progress spin in milliseconds. */ + private static final int ANIMATION_DURATION = 1000 * 80 / 60; + + /** The number of points in the progress "star". */ + private static final float NUM_POINTS = 5f; + /** The list of animators operating on this drawable. */ + private final ArrayList<Animation> mAnimators = new ArrayList<Animation>(); + + /** The indicator ring, used to manage animation state. */ + private final Ring mRing; + + /** Canvas rotation in degrees. */ + private float mRotation; + + /** Layout info for the arrowhead in dp */ + private static final int ARROW_WIDTH = 10; + private static final int ARROW_HEIGHT = 5; + private static final float ARROW_OFFSET_ANGLE = 5; + + /** Layout info for the arrowhead for the large spinner in dp */ + private static final int ARROW_WIDTH_LARGE = 12; + private static final int ARROW_HEIGHT_LARGE = 6; + private static final float MAX_PROGRESS_ARC = .8f; + + private Resources mResources; + private View mParent; + private Animation mAnimation; + private float mRotationCount; + private double mWidth; + private double mHeight; + private Animation mFinishAnimation; + + public MaterialProgressDrawable(Context context, View parent) { + mParent = parent; + mResources = context.getResources(); + + mRing = new Ring(mCallback); + mRing.setColors(COLORS); + + updateSizes(DEFAULT); + setupAnimators(); + } + + private void setSizeParameters(double progressCircleWidth, double progressCircleHeight, + double centerRadius, double strokeWidth, float arrowWidth, float arrowHeight) { + final Ring ring = mRing; + final DisplayMetrics metrics = mResources.getDisplayMetrics(); + final float screenDensity = metrics.density; + + mWidth = progressCircleWidth * screenDensity; + mHeight = progressCircleHeight * screenDensity; + ring.setStrokeWidth((float) strokeWidth * screenDensity); + ring.setCenterRadius(centerRadius * screenDensity); + ring.setColorIndex(0); + ring.setArrowDimensions(arrowWidth * screenDensity, arrowHeight * screenDensity); + ring.setInsets((int) mWidth, (int) mHeight); + } + + /** + * Set the overall size for the progress spinner. This updates the radius + * and stroke width of the ring. + * + * @param size One of {@link com.orangegangsters.github.swiperefreshlayout.MaterialProgressDrawable.LARGE} or + * {@link com.orangegangsters.github.swiperefreshlayout.MaterialProgressDrawable.DEFAULT} + */ + public void updateSizes(@ProgressDrawableSize int size) { + if (size == LARGE) { + setSizeParameters(CIRCLE_DIAMETER_LARGE, CIRCLE_DIAMETER_LARGE, CENTER_RADIUS_LARGE, + STROKE_WIDTH_LARGE, ARROW_WIDTH_LARGE, ARROW_HEIGHT_LARGE); + } else { + setSizeParameters(CIRCLE_DIAMETER, CIRCLE_DIAMETER, CENTER_RADIUS, STROKE_WIDTH, + ARROW_WIDTH, ARROW_HEIGHT); + } + } + + /** + * @param show Set to true to display the arrowhead on the progress spinner. + */ + public void showArrow(boolean show) { + mRing.setShowArrow(show); + } + + /** + * @param scale Set the scale of the arrowhead for the spinner. + */ + public void setArrowScale(float scale) { + mRing.setArrowScale(scale); + } + + /** + * Set the start and end trim for the progress spinner arc. + * + * @param startAngle start angle + * @param endAngle end angle + */ + public void setStartEndTrim(float startAngle, float endAngle) { + mRing.setStartTrim(startAngle); + mRing.setEndTrim(endAngle); + } + + /** + * Set the amount of rotation to apply to the progress spinner. + * + * @param rotation Rotation is from [0..1] + */ + public void setProgressRotation(float rotation) { + mRing.setRotation(rotation); + } + + /** + * Update the background color of the circle image view. + */ + public void setBackgroundColor(int color) { + mRing.setBackgroundColor(color); + } + + /** + * Set the colors used in the progress animation from color resources. + * The first color will also be the color of the bar that grows in response + * to a user swipe gesture. + * + * @param colors + */ + public void setColorSchemeColors(int... colors) { + mRing.setColors(colors); + mRing.setColorIndex(0); + } + + @Override + public int getIntrinsicHeight() { + return (int) mHeight; + } + + @Override + public int getIntrinsicWidth() { + return (int) mWidth; + } + + @Override + public void draw(Canvas c) { + final Rect bounds = getBounds(); + final int saveCount = c.save(); + c.rotate(mRotation, bounds.exactCenterX(), bounds.exactCenterY()); + mRing.draw(c, bounds); + c.restoreToCount(saveCount); + } + + @Override + public void setAlpha(int alpha) { + mRing.setAlpha(alpha); + } + + public int getAlpha() { + return mRing.getAlpha(); + } + + @Override + public void setColorFilter(ColorFilter colorFilter) { + mRing.setColorFilter(colorFilter); + } + + @SuppressWarnings("unused") + void setRotation(float rotation) { + mRotation = rotation; + invalidateSelf(); + } + + @SuppressWarnings("unused") + private float getRotation() { + return mRotation; + } + + @Override + public int getOpacity() { + return PixelFormat.TRANSLUCENT; + } + + @Override + public boolean isRunning() { + final ArrayList<Animation> animators = mAnimators; + final int N = animators.size(); + for (int i = 0; i < N; i++) { + final Animation animator = animators.get(i); + if (animator.hasStarted() && !animator.hasEnded()) { + return true; + } + } + return false; + } + + @Override + public void start() { + mAnimation.reset(); + mRing.storeOriginals(); + // Already showing some part of the ring + if (mRing.getEndTrim() != mRing.getStartTrim()) { + mParent.startAnimation(mFinishAnimation); + } else { + mRing.setColorIndex(0); + mRing.resetOriginals(); + mParent.startAnimation(mAnimation); + } + } + + @Override + public void stop() { + mParent.clearAnimation(); + setRotation(0); + mRing.setShowArrow(false); + mRing.setColorIndex(0); + mRing.resetOriginals(); + } + + private void setupAnimators() { + final Ring ring = mRing; + final Animation finishRingAnimation = new Animation() { + public void applyTransformation(float interpolatedTime, Transformation t) { + // shrink back down and complete a full rotation before starting other circles + // Rotation goes between [0..1]. + float targetRotation = (float) (Math.floor(ring.getStartingRotation() + / MAX_PROGRESS_ARC) + 1f); + final float startTrim = ring.getStartingStartTrim() + + (ring.getStartingEndTrim() - ring.getStartingStartTrim()) + * interpolatedTime; + ring.setStartTrim(startTrim); + final float rotation = ring.getStartingRotation() + + ((targetRotation - ring.getStartingRotation()) * interpolatedTime); + ring.setRotation(rotation); + ring.setArrowScale(1 - interpolatedTime); + } + }; + finishRingAnimation.setInterpolator(EASE_INTERPOLATOR); + finishRingAnimation.setDuration(ANIMATION_DURATION/2); + finishRingAnimation.setAnimationListener(new Animation.AnimationListener() { + + @Override + public void onAnimationStart(Animation animation) { + } + + @Override + public void onAnimationEnd(Animation animation) { + ring.goToNextColor(); + ring.storeOriginals(); + ring.setShowArrow(false); + mParent.startAnimation(mAnimation); + } + + @Override + public void onAnimationRepeat(Animation animation) { + } + }); + final Animation animation = new Animation() { + @Override + public void applyTransformation(float interpolatedTime, Transformation t) { + // The minProgressArc is calculated from 0 to create an angle that + // matches the stroke width. + final float minProgressArc = (float) Math.toRadians(ring.getStrokeWidth() + / (2 * Math.PI * ring.getCenterRadius())); + final float startingEndTrim = ring.getStartingEndTrim(); + final float startingTrim = ring.getStartingStartTrim(); + final float startingRotation = ring.getStartingRotation(); + + // Offset the minProgressArc to where the endTrim is located. + final float minArc = MAX_PROGRESS_ARC - minProgressArc; + final float endTrim = startingEndTrim + + (minArc * START_CURVE_INTERPOLATOR.getInterpolation(interpolatedTime)); + ring.setEndTrim(endTrim); + + final float startTrim = startingTrim + + (MAX_PROGRESS_ARC * END_CURVE_INTERPOLATOR + .getInterpolation(interpolatedTime)); + ring.setStartTrim(startTrim); + + final float rotation = startingRotation + (0.25f * interpolatedTime); + ring.setRotation(rotation); + + float groupRotation = ((720.0f / NUM_POINTS) * interpolatedTime) + + (720.0f * (mRotationCount / NUM_POINTS)); + setRotation(groupRotation); + } + }; + animation.setRepeatCount(Animation.INFINITE); + animation.setRepeatMode(Animation.RESTART); + animation.setInterpolator(LINEAR_INTERPOLATOR); + animation.setDuration(ANIMATION_DURATION); + animation.setAnimationListener(new Animation.AnimationListener() { + + @Override + public void onAnimationStart(Animation animation) { + mRotationCount = 0; + } + + @Override + public void onAnimationEnd(Animation animation) { + // do nothing + } + + @Override + public void onAnimationRepeat(Animation animation) { + ring.storeOriginals(); + ring.goToNextColor(); + ring.setStartTrim(ring.getEndTrim()); + mRotationCount = (mRotationCount + 1) % (NUM_POINTS); + } + }); + mFinishAnimation = finishRingAnimation; + mAnimation = animation; + } + + private final Callback mCallback = new Callback() { + @Override + public void invalidateDrawable(Drawable d) { + invalidateSelf(); + } + + @Override + public void scheduleDrawable(Drawable d, Runnable what, long when) { + scheduleSelf(what, when); + } + + @Override + public void unscheduleDrawable(Drawable d, Runnable what) { + unscheduleSelf(what); + } + }; + + private static class Ring { + private final RectF mTempBounds = new RectF(); + private final Paint mPaint = new Paint(); + private final Paint mArrowPaint = new Paint(); + + private final Callback mCallback; + + private float mStartTrim = 0.0f; + private float mEndTrim = 0.0f; + private float mRotation = 0.0f; + private float mStrokeWidth = 5.0f; + private float mStrokeInset = 2.5f; + + private int[] mColors; + // mColorIndex represents the offset into the available mColors that the + // progress circle should currently display. As the progress circle is + // animating, the mColorIndex moves by one to the next available color. + private int mColorIndex; + private float mStartingStartTrim; + private float mStartingEndTrim; + private float mStartingRotation; + private boolean mShowArrow; + private Path mArrow; + private float mArrowScale; + private double mRingCenterRadius; + private int mArrowWidth; + private int mArrowHeight; + private int mAlpha; + private final Paint mCirclePaint = new Paint(); + private int mBackgroundColor; + + public Ring(Callback callback) { + mCallback = callback; + + mPaint.setStrokeCap(Paint.Cap.SQUARE); + mPaint.setAntiAlias(true); + mPaint.setStyle(Style.STROKE); + + mArrowPaint.setStyle(Style.FILL); + mArrowPaint.setAntiAlias(true); + } + + public void setBackgroundColor(int color) { + mBackgroundColor = color; + } + + /** + * Set the dimensions of the arrowhead. + * + * @param width Width of the hypotenuse of the arrow head + * @param height Height of the arrow point + */ + public void setArrowDimensions(float width, float height) { + mArrowWidth = (int) width; + mArrowHeight = (int) height; + } + + /** + * Draw the progress spinner + */ + public void draw(Canvas c, Rect bounds) { + final RectF arcBounds = mTempBounds; + arcBounds.set(bounds); + arcBounds.inset(mStrokeInset, mStrokeInset); + + final float startAngle = (mStartTrim + mRotation) * 360; + final float endAngle = (mEndTrim + mRotation) * 360; + float sweepAngle = endAngle - startAngle; + + mPaint.setColor(mColors[mColorIndex]); + c.drawArc(arcBounds, startAngle, sweepAngle, false, mPaint); + + drawTriangle(c, startAngle, sweepAngle, bounds); + + if (mAlpha < 255) { + mCirclePaint.setColor(mBackgroundColor); + mCirclePaint.setAlpha(255 - mAlpha); + c.drawCircle(bounds.exactCenterX(), bounds.exactCenterY(), bounds.width() / 2, + mCirclePaint); + } + } + + private void drawTriangle(Canvas c, float startAngle, float sweepAngle, Rect bounds) { + if (mShowArrow) { + if (mArrow == null) { + mArrow = new Path(); + mArrow.setFillType(Path.FillType.EVEN_ODD); + } else { + mArrow.reset(); + } + + // Adjust the position of the triangle so that it is inset as + // much as the arc, but also centered on the arc. + float inset = (int) mStrokeInset / 2 * mArrowScale; + float x = (float) (mRingCenterRadius * Math.cos(0) + bounds.exactCenterX()); + float y = (float) (mRingCenterRadius * Math.sin(0) + bounds.exactCenterY()); + + // Update the path each time. This works around an issue in SKIA + // where concatenating a rotation matrix to a scale matrix + // ignored a starting negative rotation. This appears to have + // been fixed as of API 21. + mArrow.moveTo(0, 0); + mArrow.lineTo(mArrowWidth * mArrowScale, 0); + mArrow.lineTo((mArrowWidth * mArrowScale / 2), (mArrowHeight + * mArrowScale)); + mArrow.offset(x - inset, y); + mArrow.close(); + // draw a triangle + mArrowPaint.setColor(mColors[mColorIndex]); + c.rotate(startAngle + sweepAngle - ARROW_OFFSET_ANGLE, bounds.exactCenterX(), + bounds.exactCenterY()); + c.drawPath(mArrow, mArrowPaint); + } + } + + /** + * Set the colors the progress spinner alternates between. + * + * @param colors Array of integers describing the colors. Must be non-<code>null</code>. + */ + public void setColors(@NonNull int[] colors) { + mColors = colors; + // if colors are reset, make sure to reset the color index as well + setColorIndex(0); + } + + /** + * @param index Index into the color array of the color to display in + * the progress spinner. + */ + public void setColorIndex(int index) { + mColorIndex = index; + } + + /** + * Proceed to the next available ring color. This will automatically + * wrap back to the beginning of colors. + */ + public void goToNextColor() { + mColorIndex = (mColorIndex + 1) % (mColors.length); + } + + public void setColorFilter(ColorFilter filter) { + mPaint.setColorFilter(filter); + invalidateSelf(); + } + + /** + * @param alpha Set the alpha of the progress spinner and associated arrowhead. + */ + public void setAlpha(int alpha) { + mAlpha = alpha; + } + + /** + * @return Current alpha of the progress spinner and arrowhead. + */ + public int getAlpha() { + return mAlpha; + } + + /** + * @param strokeWidth Set the stroke width of the progress spinner in pixels. + */ + public void setStrokeWidth(float strokeWidth) { + mStrokeWidth = strokeWidth; + mPaint.setStrokeWidth(strokeWidth); + invalidateSelf(); + } + + @SuppressWarnings("unused") + public float getStrokeWidth() { + return mStrokeWidth; + } + + @SuppressWarnings("unused") + public void setStartTrim(float startTrim) { + mStartTrim = startTrim; + invalidateSelf(); + } + + @SuppressWarnings("unused") + public float getStartTrim() { + return mStartTrim; + } + + public float getStartingStartTrim() { + return mStartingStartTrim; + } + + public float getStartingEndTrim() { + return mStartingEndTrim; + } + + @SuppressWarnings("unused") + public void setEndTrim(float endTrim) { + mEndTrim = endTrim; + invalidateSelf(); + } + + @SuppressWarnings("unused") + public float getEndTrim() { + return mEndTrim; + } + + @SuppressWarnings("unused") + public void setRotation(float rotation) { + mRotation = rotation; + invalidateSelf(); + } + + @SuppressWarnings("unused") + public float getRotation() { + return mRotation; + } + + public void setInsets(int width, int height) { + final float minEdge = (float) Math.min(width, height); + float insets; + if (mRingCenterRadius <= 0 || minEdge < 0) { + insets = (float) Math.ceil(mStrokeWidth / 2.0f); + } else { + insets = (float) (minEdge / 2.0f - mRingCenterRadius); + } + mStrokeInset = insets; + } + + @SuppressWarnings("unused") + public float getInsets() { + return mStrokeInset; + } + + /** + * @param centerRadius Inner radius in px of the circle the progress + * spinner arc traces. + */ + public void setCenterRadius(double centerRadius) { + mRingCenterRadius = centerRadius; + } + + public double getCenterRadius() { + return mRingCenterRadius; + } + + /** + * @param show Set to true to show the arrow head on the progress spinner. + */ + public void setShowArrow(boolean show) { + if (mShowArrow != show) { + mShowArrow = show; + invalidateSelf(); + } + } + + /** + * @param scale Set the scale of the arrowhead for the spinner. + */ + public void setArrowScale(float scale) { + if (scale != mArrowScale) { + mArrowScale = scale; + invalidateSelf(); + } + } + + /** + * @return The amount the progress spinner is currently rotated, between [0..1]. + */ + public float getStartingRotation() { + return mStartingRotation; + } + + /** + * If the start / end trim are offset to begin with, store them so that + * animation starts from that offset. + */ + public void storeOriginals() { + mStartingStartTrim = mStartTrim; + mStartingEndTrim = mEndTrim; + mStartingRotation = mRotation; + } + + /** + * Reset the progress spinner to default rotation, start and end angles. + */ + public void resetOriginals() { + mStartingStartTrim = 0; + mStartingEndTrim = 0; + mStartingRotation = 0; + setStartTrim(0); + setEndTrim(0); + setRotation(0); + } + + private void invalidateSelf() { + mCallback.invalidateDrawable(null); + } + } + + /** + * Squishes the interpolation curve into the second half of the animation. + */ + private static class EndCurveInterpolator extends AccelerateDecelerateInterpolator { + @Override + public float getInterpolation(float input) { + return super.getInterpolation(Math.max(0, (input - 0.5f) * 2.0f)); + } + } + + /** + * Squishes the interpolation curve into the first half of the animation. + */ + private static class StartCurveInterpolator extends AccelerateDecelerateInterpolator { + @Override + public float getInterpolation(float input) { + return super.getInterpolation(Math.min(1, input * 2.0f)); + } + } +} |