1 files changed, 141 insertions, 0 deletions
diff --git a/subsonic-android/src/net/sourceforge/subsonic/androidapp/util/HorizontalSlider.java b/subsonic-android/src/net/sourceforge/subsonic/androidapp/util/HorizontalSlider.java
new file mode 100644
index 00000000..6a79a0a0
--- /dev/null
+++ b/subsonic-android/src/net/sourceforge/subsonic/androidapp/util/HorizontalSlider.java
@@ -0,0 +1,141 @@
+/*
+ This file is part of Subsonic.
+
+ Subsonic is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Subsonic is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Subsonic.  If not, see <http://www.gnu.org/licenses/>.
+
+ Copyright 2009 (C) Sindre Mehus
+ */
+package net.sourceforge.subsonic.androidapp.util;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Canvas;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+import android.view.View;
+import android.widget.ProgressBar;
+import net.sourceforge.subsonic.androidapp.R;
+
+/**
+ * @author Sindre Mehus
+ * @version $Id$
+ */
+public class HorizontalSlider extends ProgressBar {
+
+    private final Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.slider_knob);
+    private boolean slidingEnabled;
+    private OnSliderChangeListener listener;
+    private static final int PADDING = 2;
+    private boolean sliding;
+    private int sliderPosition;
+    private int startPosition;
+
+    public interface OnSliderChangeListener {
+        void onSliderChanged(View view, int position, boolean inProgress);
+    }
+
+    public HorizontalSlider(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    public HorizontalSlider(Context context, AttributeSet attrs) {
+        super(context, attrs, android.R.attr.progressBarStyleHorizontal);
+    }
+
+    public HorizontalSlider(Context context) {
+        super(context);
+    }
+
+    public void setSlidingEnabled(boolean slidingEnabled) {
+        if (this.slidingEnabled != slidingEnabled) {
+            this.slidingEnabled = slidingEnabled;
+            invalidate();
+        }
+    }
+
+    public boolean isSlidingEnabled() {
+        return slidingEnabled;
+    }
+
+    public void setOnSliderChangeListener(OnSliderChangeListener listener) {
+        this.listener = listener;
+    }
+
+    @Override
+    protected void onDraw(Canvas canvas) {
+        super.onDraw(canvas);
+
+        int max = getMax();
+        if (!slidingEnabled || max == 0) {
+            return;
+        }
+
+        int paddingLeft = getPaddingLeft();
+        int paddingRight = getPaddingRight();
+        int paddingTop = getPaddingTop();
+        int paddingBottom = getPaddingBottom();
+
+        int w = getWidth() - paddingLeft - paddingRight;
+        int h = getHeight() - paddingTop - paddingBottom;
+        int position = sliding ? sliderPosition : getProgress();
+
+        int bitmapWidth = bitmap.getWidth();
+        int bitmapHeight = bitmap.getWidth();
+        float x = paddingLeft + w * ((float) position / max) - bitmapWidth / 2.0F;
+        x = Math.max(x, paddingLeft);
+        x = Math.min(x, paddingLeft + w - bitmapWidth);
+        float y = paddingTop + h / 2.0F - bitmapHeight / 2.0F;
+
+        canvas.drawBitmap(bitmap, x, y, null);
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent event) {
+        if (!slidingEnabled) {
+            return false;
+        }
+
+        int action = event.getAction();
+
+        if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_MOVE) {
+
+            if (action == MotionEvent.ACTION_DOWN) {
+                sliding = true;
+                startPosition = getProgress();
+            }
+
+            float x = event.getX() - PADDING;
+            float width = getWidth() - 2 * PADDING;
+            sliderPosition = Math.round((float) getMax() * (x / width));
+            sliderPosition = Math.max(sliderPosition, 0);
+
+            setProgress(Math.min(startPosition, sliderPosition));
+            setSecondaryProgress(Math.max(startPosition, sliderPosition));
+            if (listener != null) {
+                listener.onSliderChanged(this, sliderPosition, true);
+            }
+
+        } else if (action == MotionEvent.ACTION_UP) {
+            sliding = false;
+            setProgress(sliderPosition);
+            setSecondaryProgress(0);
+            if (listener != null) {
+                listener.onSliderChanged(this, sliderPosition, false);
+            }
+        }
+
+        return true;
+    }
+}
+\ No newline at end of file