1 files changed, 135 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..ce50fa4
--- /dev/null
+++ b/src/org/cyanogenmod/wallpapers/photophase/transitions/FadeTransition.java
@@ -0,0 +1,135 @@
+/*
+ * 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 = 600.0f;
+
+    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.getFrameVertex(), Colors.getBackground());
+        mOverlay.setAlpha(0);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void apply(float[] matrix) throws GLException {
+        // Check internal vars
+        if (mTarget == null ||
+            mTarget.getPositionBuffer() == null ||
+            mTarget.getTextureBuffer() == null) {
+            return;
+        }
+        if (mTransitionTarget == null ||
+            mTransitionTarget.getPositionBuffer() == null ||
+            mTransitionTarget.getTextureBuffer() == 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;
+        }
+    }
+
+}