fixed first scrolling direction; animation speed setting

src/org/geometerplus/android/fbreader/preferences/AnimationSpeedPreference.java

@@ -0,0 +1,159 @@
+/*
+ * Copyright (C) 2010-2011 Geometer Plus <contact@geometerplus.com>
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+package org.geometerplus.android.fbreader.preferences;
+
+import android.content.Context;
+import android.content.DialogInterface;
+import android.graphics.*;
+import android.graphics.drawable.*;
+import android.preference.DialogPreference;
+import android.view.View;
+import android.widget.SeekBar;
+
+import org.geometerplus.zlibrary.core.options.ZLIntegerRangeOption;
+import org.geometerplus.zlibrary.core.resources.ZLResource;
+
+import org.geometerplus.zlibrary.ui.android.R;
+
+class AnimationSpeedPreference extends DialogPreference implements ZLPreference {
+	private final ZLIntegerRangeOption myOption;
+	private final ZLResource myResource;
+
+	private SeekBar mySlider;
+
+	AnimationSpeedPreference(Context context, ZLResource resource, String resourceKey, ZLIntegerRangeOption option) {
+		super(context, null);
+		myOption = option;
+		myResource = resource.getResource(resourceKey);
+		final String title = myResource.getValue();
+		setTitle(title);
+		setDialogTitle(title);
+		setDialogLayoutResource(R.layout.animation_speed_dialog);
+
+		final ZLResource buttonResource = ZLResource.resource("dialog").getResource("button");
+		setPositiveButtonText(buttonResource.getResource("ok").getValue());
+		setNegativeButtonText(buttonResource.getResource("cancel").getValue());
+	}
+
+	@Override
+	protected void onBindDialogView(View view) {
+		mySlider = (SeekBar)view.findViewById(R.id.animation_speed_slider);
+		mySlider.setMax(myOption.MaxValue - myOption.MinValue);
+		mySlider.setProgress(myOption.getValue() - myOption.MinValue);
+		mySlider.setProgressDrawable(new SeekBarDrawable());
+
+		super.onBindDialogView(view);
+	}
+
+	@Override
+	public void onClick(DialogInterface dialog, int which) {
+		if (which == DialogInterface.BUTTON_POSITIVE) {
+			myOption.setValue(myOption.MinValue + mySlider.getProgress());
+		}
+	}
+
+	public void onAccept() {
+	}
+
+	private class SeekBarDrawable extends Drawable {
+		private final Drawable myBase;
+		private final Paint myPaint;
+		private final Paint myOutlinePaint;
+
+		public SeekBarDrawable() {
+			myBase = mySlider.getProgressDrawable();
+
+			myPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
+			myPaint.setTypeface(Typeface.DEFAULT_BOLD);
+			myPaint.setColor(Color.BLACK);
+			myPaint.setAlpha(255);
+
+			myOutlinePaint = new Paint(myPaint);
+			myOutlinePaint.setStyle(Paint.Style.STROKE);
+			myOutlinePaint.setStrokeWidth(3);
+			myOutlinePaint.setColor(0xFFAAAAAA);
+		}
+
+		@Override
+		protected void onBoundsChange(Rect bounds) {
+			myBase.setBounds(bounds);
+		}
+		
+		@Override
+		protected boolean onStateChange(int[] state) {
+			invalidateSelf();
+			return false;
+		}
+		
+		@Override
+		public boolean isStateful() {
+			return true;
+		}
+		
+		@Override
+		protected boolean onLevelChange(int level) {
+			return myBase.setLevel(level);
+		}
+		
+		@Override
+		public void draw(Canvas canvas) {
+			myBase.draw(canvas);
+
+			final Rect bounds = getBounds();
+			final int textSize = bounds.height() * 2 / 3;
+			myPaint.setTextSize(textSize);
+			myOutlinePaint.setTextSize(textSize);
+
+			final Rect textBounds = new Rect();
+			myPaint.getTextBounds("a", 0, 1, textBounds);
+			final float y = bounds.height() / 2 + textBounds.height();
+
+			final int progress = mySlider.getProgress();
+			final int max = mySlider.getMax();
+			if (progress >= max / 3) {
+				final String text = myResource.getResource("slow").getValue();
+				final float textWidth = myOutlinePaint.measureText(text);
+				final float x = 6;
+				canvas.drawText(text, x, y, myOutlinePaint);
+				canvas.drawText(text, x, y, myPaint);
+			}
+			if (progress <= 2 * max / 3) {
+				final String text = myResource.getResource("fast").getValue();
+				final float textWidth = myOutlinePaint.measureText(text);
+				final float x = bounds.width() - textWidth - 6;
+				canvas.drawText(text, x, y, myOutlinePaint);
+				canvas.drawText(text, x, y, myPaint);
+			}
+		}
+
+		@Override
+		public int getOpacity() {
+			return PixelFormat.TRANSLUCENT;
+		}
+
+		@Override
+		public void setAlpha(int alpha) {
+		}
+
+		@Override
+		public void setColorFilter(ColorFilter cf) {
+		}
+	}
+}