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author | Roman Birg <roman@cyngn.com> | 2016-08-29 16:26:56 -0700 |
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committer | Gerrit Code Review <gerrit@cyanogenmod.org> | 2016-08-29 16:26:56 -0700 |
commit | 33b5c82b68ecf8c18f284214b65db0c2e80589ce (patch) | |
tree | 41741e034f2057289f485f49761ebe6bc2135532 /src/org/cyanogenmod/audiofx/preset/InfiniteViewPager.java | |
parent | 10fc11011278db3da38e3d28f729887426c1c3a1 (diff) | |
parent | 71e5da3c38e5a7e79d5c1f94a13f239cc7ca7458 (diff) | |
download | android_packages_apps_AudioFX-33b5c82b68ecf8c18f284214b65db0c2e80589ce.tar.gz android_packages_apps_AudioFX-33b5c82b68ecf8c18f284214b65db0c2e80589ce.tar.bz2 android_packages_apps_AudioFX-33b5c82b68ecf8c18f284214b65db0c2e80589ce.zip |
Merge "AudioFX: finish rename; persist process" into cm-13.0
Diffstat (limited to 'src/org/cyanogenmod/audiofx/preset/InfiniteViewPager.java')
-rw-r--r-- | src/org/cyanogenmod/audiofx/preset/InfiniteViewPager.java | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/src/org/cyanogenmod/audiofx/preset/InfiniteViewPager.java b/src/org/cyanogenmod/audiofx/preset/InfiniteViewPager.java new file mode 100644 index 0000000..26e67f3 --- /dev/null +++ b/src/org/cyanogenmod/audiofx/preset/InfiniteViewPager.java @@ -0,0 +1,120 @@ +/* + * Copyright (C) 2016 The CyanogenMod 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 org.cyanogenmod.audiofx.preset; + +import android.content.Context; +import android.support.v4.view.PagerAdapter; +import android.support.v4.view.ViewPager; +import android.util.AttributeSet; +import android.view.MotionEvent; + +import org.cyanogenmod.audiofx.R; +import org.cyanogenmod.audiofx.activity.EqualizerManager; +import org.cyanogenmod.audiofx.activity.MasterConfigControl; + +/** + * A {@link ViewPager} that allows pseudo-infinite paging with a wrap-around effect. Should be used with an {@link + * InfinitePagerAdapter}. + */ +public class InfiniteViewPager extends ViewPager { + + private final EqualizerManager mEqManager; + + @Override + public boolean hasOverlappingRendering() { + return false; + } + + public InfiniteViewPager(Context context) { + super(context); + mEqManager = MasterConfigControl.getInstance(context).getEqualizerManager(); + } + + public InfiniteViewPager(Context context, AttributeSet attrs) { + super(context, attrs); + mEqManager = MasterConfigControl.getInstance(context).getEqualizerManager(); + } + + @Override + public boolean onInterceptTouchEvent(MotionEvent ev) { + if (mEqManager.isAnimatingToCustom()) { + return false; + } + return super.onInterceptTouchEvent(ev); + } + + @Override + public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { + int textSize = getResources().getDimensionPixelSize(R.dimen.preset_text_size) + + getResources().getDimensionPixelSize(R.dimen.preset_text_padding); + super.onMeasure(widthMeasureSpec, + MeasureSpec.makeMeasureSpec(textSize, MeasureSpec.EXACTLY)); + } + + @Override + public boolean onTouchEvent(MotionEvent ev) { + if (mEqManager.isAnimatingToCustom()) { + return false; + } + boolean result; + try { + result = super.onTouchEvent(ev); + } catch (IllegalArgumentException e) { + /* There's a bug with the support library where it doesn't check + * the proper pointer index, so when multi touching the container, + * this can sometimes be thrown. Supposedly there are no downsides to just + * catching the exception and moving along, so let's do that.... + */ + result = false; + } + return result; + } + + @Override + public void setAdapter(PagerAdapter adapter) { + super.setAdapter(adapter); + // offset first element so that we can scroll to the left + setCurrentItem(0); + } + + @Override + public void setCurrentItem(int item) { + // offset the current item to ensure there is space to scroll + item = getOffsetAmount() + (item % getAdapter().getCount()); + super.setCurrentItem(item); + } + + public void setCurrentItemAbsolute(int item) { + super.setCurrentItem(item); + } + + private int getOffsetAmount() { + if (getAdapter() instanceof InfinitePagerAdapter) { + InfinitePagerAdapter infAdapter = (InfinitePagerAdapter) getAdapter(); + // allow for 100 back cycles from the beginning + // should be enough to create an illusion of infinity + // warning: scrolling to very high values (1,000,000+) results in + // strange drawing behaviour + return infAdapter.getRealCount() * 100; + } else { + return 0; + } + } + + public void setCurrentItemAbsolute(int newPage, boolean b) { + super.setCurrentItem(newPage, b); + } +} |