1 files changed, 318 insertions, 0 deletions
diff --git a/src/org/cyanogenmod/wallpapers/photophase/preferences/SeekBarPreference.java b/src/org/cyanogenmod/wallpapers/photophase/preferences/SeekBarPreference.java
new file mode 100644
index 0000000..e8b6d2e
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+++ b/src/org/cyanogenmod/wallpapers/photophase/preferences/SeekBarPreference.java
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+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ * 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.preferences;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.preference.Preference;
+import android.util.AttributeSet;
+import android.view.KeyEvent;
+import android.view.View;
+import android.widget.SeekBar;
+import android.widget.SeekBar.OnSeekBarChangeListener;
+
+import org.cyanogenmod.wallpapers.photophase.R;
+
+/**
+ * A preference with a seekbar widget
+ */
+public class SeekBarPreference extends Preference implements OnSeekBarChangeListener {
+
+    private int mProgress;
+    private int mMax;
+    private boolean mTrackingTouch;
+
+    /**
+     * Constructor of <code>SeekBarPreference</code>
+     *
+     * @param context The current context
+     * @param attrs The attributes of the view
+     * @param defStyle The resource with the style
+     */
+    public SeekBarPreference(
+            Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        setMax(100);
+        setLayoutResource(R.layout.preference_widget_seekbar);
+    }
+
+    /**
+     * Constructor of <code>SeekBarPreference</code>
+     *
+     * @param context The current context
+     * @param attrs The attributes of the view
+     */
+    public SeekBarPreference(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    /**
+     * Constructor of <code>SeekBarPreference</code>
+     *
+     * @param context The current context
+     */
+    public SeekBarPreference(Context context) {
+        this(context, null);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    protected void onBindView(View view) {
+        super.onBindView(view);
+        SeekBar seekBar = (SeekBar) view.findViewById(R.id.seekbar);
+        seekBar.setOnSeekBarChangeListener(this);
+        seekBar.setMax(mMax);
+        seekBar.setProgress(mProgress);
+        seekBar.setEnabled(isEnabled());
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    @SuppressWarnings("boxing")
+    protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
+        setProgress(restoreValue ? getPersistedInt(mProgress) : (Integer) defaultValue);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    @SuppressWarnings("boxing")
+    protected Object onGetDefaultValue(TypedArray a, int index) {
+        return a.getInt(index, 0);
+    }
+
+    /**
+     * Allows a Preference to intercept key events without having focus.
+     * For example, SeekBarPreference uses this to intercept +/- to adjust
+     * the progress.
+     *
+     * @param v The view
+     * @param keyCode The key code
+     * @param event The key event
+     * @return True if the Preference handled the key. Returns false by default.
+     */
+    public boolean onKey(View v, int keyCode, KeyEvent event) {
+        if (event.getAction() != KeyEvent.ACTION_UP) {
+            if (keyCode == KeyEvent.KEYCODE_PLUS
+                    || keyCode == KeyEvent.KEYCODE_EQUALS) {
+                setProgress(getProgress() + 1);
+                return true;
+            }
+            if (keyCode == KeyEvent.KEYCODE_MINUS) {
+                setProgress(getProgress() - 1);
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Method that set the maximum progress
+     *
+     * @param max The maximum progress
+     */
+    public void setMax(int max) {
+        if (max != mMax) {
+            mMax = max;
+            notifyChanged();
+        }
+    }
+
+    /**
+     * Method that set the actual progress
+     *
+     * @param progress The actual progress
+     */
+    public void setProgress(int progress) {
+        setProgress(progress, true);
+    }
+
+    /**
+     * Method that set the actual progress
+     *
+     * @param progress The actual progress
+     * @param notifyChanged Whether notify if the progress was changed
+     */
+    protected void setProgress(int progress, boolean notifyChanged) {
+        int p = progress;
+        if (p > mMax) {
+            p = mMax;
+        }
+        if (p < 0) {
+            p = 0;
+        }
+        if (p != mProgress) {
+            mProgress = p;
+            persistInt(p);
+            if (notifyChanged) {
+                notifyChanged();
+            }
+        }
+    }
+
+    /**
+     * Method that returns the current progress
+     *
+     * @return int The current progress
+     */
+    public int getProgress() {
+        return mProgress;
+    }
+
+    /**
+     * Persist the seekBar's progress value if callChangeListener
+     *
+     * returns boolean True, otherwise set the seekBar's progress to the stored value
+     */
+    @SuppressWarnings("boxing")
+    void syncProgress(SeekBar seekBar) {
+        int progress = seekBar.getProgress();
+        if (progress != mProgress) {
+            if (callChangeListener(progress)) {
+                setProgress(progress, false);
+            } else {
+                seekBar.setProgress(mProgress);
+            }
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+        if (fromUser && !mTrackingTouch) {
+            syncProgress(seekBar);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void onStartTrackingTouch(SeekBar seekBar) {
+        mTrackingTouch = true;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void onStopTrackingTouch(SeekBar seekBar) {
+        mTrackingTouch = false;
+        if (seekBar.getProgress() != mProgress) {
+            syncProgress(seekBar);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    protected Parcelable onSaveInstanceState() {
+        /*
+         * Suppose a client uses this preference type without persisting. We
+         * must save the instance state so it is able to, for example, survive
+         * orientation changes.
+         */
+
+        final Parcelable superState = super.onSaveInstanceState();
+        if (isPersistent()) {
+            // No need to save instance state since it's persistent
+            return superState;
+        }
+
+        // Save the instance state
+        final SavedState myState = new SavedState(superState);
+        myState.progress = mProgress;
+        myState.max = mMax;
+        return myState;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    protected void onRestoreInstanceState(Parcelable state) {
+        if (!state.getClass().equals(SavedState.class)) {
+            // Didn't save state for us in onSaveInstanceState
+            super.onRestoreInstanceState(state);
+            return;
+        }
+
+        // Restore the instance state
+        SavedState myState = (SavedState) state;
+        super.onRestoreInstanceState(myState.getSuperState());
+        mProgress = myState.progress;
+        mMax = myState.max;
+        notifyChanged();
+    }
+
+    /**
+     * SavedState, a subclass of {@link BaseSavedState}, will store the state
+     * of MyPreference, a subclass of Preference.
+     * <p>
+     * It is important to always call through to super methods.
+     */
+    private static class SavedState extends BaseSavedState {
+        int progress;
+        int max;
+
+        public SavedState(Parcel source) {
+            super(source);
+
+            // Restore the click counter
+            progress = source.readInt();
+            max = source.readInt();
+        }
+
+        @Override
+        public void writeToParcel(Parcel dest, int flags) {
+            super.writeToParcel(dest, flags);
+
+            // Save the click counter
+            dest.writeInt(progress);
+            dest.writeInt(max);
+        }
+
+        public SavedState(Parcelable superState) {
+            super(superState);
+        }
+
+        @SuppressWarnings({"unused", "hiding"})
+        public static final Parcelable.Creator<SavedState> CREATOR =
+                new Parcelable.Creator<SavedState>() {
+            @Override
+            public SavedState createFromParcel(Parcel in) {
+                return new SavedState(in);
+            }
+
+            @Override
+            public SavedState[] newArray(int size) {
+                return new SavedState[size];
+            }
+        };
+    }
+}