diff options
Diffstat (limited to 'src/org/cyanogenmod/wallpapers/photophase/transitions/FadeTransition.java')
-rw-r--r-- | src/org/cyanogenmod/wallpapers/photophase/transitions/FadeTransition.java | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/src/org/cyanogenmod/wallpapers/photophase/transitions/FadeTransition.java b/src/org/cyanogenmod/wallpapers/photophase/transitions/FadeTransition.java new file mode 100644 index 0000000..d88aafc --- /dev/null +++ b/src/org/cyanogenmod/wallpapers/photophase/transitions/FadeTransition.java @@ -0,0 +1,137 @@ +/* + * 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.Colors; +import org.cyanogenmod.wallpapers.photophase.PhotoFrame; +import org.cyanogenmod.wallpapers.photophase.TextureManager; +import org.cyanogenmod.wallpapers.photophase.shapes.ColorShape; +import org.cyanogenmod.wallpapers.photophase.transitions.Transitions.TRANSITIONS; + +/** + * A transition that applies a fade transition to the picture. + */ +public class FadeTransition extends NullTransition { + + private static final float TRANSITION_TIME = 800.0f; + + private boolean mRunning; + private long mTime; + + ColorShape mOverlay; + + /** + * Constructor of <code>FadeTransition</code> + * + * @param ctx The current context + * @param tm The texture manager + */ + public FadeTransition(Context ctx, TextureManager tm) { + super(ctx, tm); + } + + /** + * {@inheritDoc} + */ + @Override + public TRANSITIONS getType() { + return TRANSITIONS.FADE; + } + + /** + * {@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 select(PhotoFrame target) { + super.select(target); + mOverlay = new ColorShape(mContext, target.getPictureVertex(), Colors.getBackground()); + mOverlay.setAlpha(0); + } + + /** + * {@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(); + } + + final float delta = Math.min(SystemClock.uptimeMillis() - mTime, TRANSITION_TIME) / TRANSITION_TIME; + if (delta <= 0.5) { + // Draw the src target + draw(mTarget, matrix); + mOverlay.setAlpha(delta * 2.0f); + } else { + // Draw the dst target + draw(mTransitionTarget, matrix); + mOverlay.setAlpha((1 - delta) * 2.0f); + } + mOverlay.draw(matrix); + + // Transition ended + if (delta == 1) { + mRunning = false; + } + } + +} |