diff options
Diffstat (limited to 'src/org/cyanogenmod/wallpapers/photophase/transitions/SwapTransition.java')
-rw-r--r-- | src/org/cyanogenmod/wallpapers/photophase/transitions/SwapTransition.java | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/src/org/cyanogenmod/wallpapers/photophase/transitions/SwapTransition.java b/src/org/cyanogenmod/wallpapers/photophase/transitions/SwapTransition.java new file mode 100644 index 0000000..d100110 --- /dev/null +++ b/src/org/cyanogenmod/wallpapers/photophase/transitions/SwapTransition.java @@ -0,0 +1,113 @@ +/* + * Copyright (C) 2013 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.wallpapers.photophase.transitions; + +import android.content.Context; +import android.opengl.GLException; +import android.os.SystemClock; + +import org.cyanogenmod.wallpapers.photophase.TextureManager; +import org.cyanogenmod.wallpapers.photophase.transitions.Transitions.TRANSITIONS; + +/** + * A simple transition that swap an image after the transition time is ended. + */ +public class SwapTransition extends NullTransition { + + private static final float TRANSITION_TIME = 250.0f; + + private boolean mRunning; + private long mTime; + + /** + * Constructor of <code>SwapTransition</code> + * + * @param ctx The current context + * @param tm The texture manager + */ + public SwapTransition(Context ctx, TextureManager tm) { + super(ctx, tm); + } + + /** + * {@inheritDoc} + */ + @Override + public TRANSITIONS getType() { + return TRANSITIONS.SWAP; + } + + /** + * {@inheritDoc} + */ + @Override + public boolean hasTransitionTarget() { + return true; + } + + /** + * {@inheritDoc} + */ + @Override + public boolean isRunning() { + return mRunning; + } + + /** + * {@inheritDoc} + */ + @Override + public void reset() { + super.reset(); + mTime = -1; + mRunning = true; + } + + /** + * {@inheritDoc} + */ + @Override + public void apply(float[] matrix) throws GLException { + // Check internal vars + if (mTarget == null || + mTarget.getPictureVertexBuffer() == null || + mTarget.getTextureBuffer() == null || + mTarget.getVertexOrderBuffer() == null) { + return; + } + if (mTransitionTarget == null || + mTransitionTarget.getPictureVertexBuffer() == null || + mTransitionTarget.getTextureBuffer() == null || + mTransitionTarget.getVertexOrderBuffer() == null) { + return; + } + + // Set the time the first time + if (mTime == -1) { + mTime = SystemClock.uptimeMillis(); + } + + // Calculate the delta time + final float delta = Math.min(SystemClock.uptimeMillis() - mTime, TRANSITION_TIME) / TRANSITION_TIME; + + // Apply the transition + boolean ended = delta == 1; + draw(ended ? mTransitionTarget : mTarget, matrix); + mRunning = !ended; + } + +} |