/*
The contents of this file are subject to the Mozilla Public License
Version 1.1 (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.mozilla.org/MPL/
Software distributed under the License is distributed on an "AS IS"
basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
License for the specific language governing rights and limitations
under the License.
The Original Code is collection of files collectively known as Open Camera.
The Initial Developer of the Original Code is Almalence Inc.
Portions created by Initial Developer are Copyright (C) 2013
by Almalence Inc. All Rights Reserved.
*/
package com.almalence.plugins.vf.histogram;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.content.res.Configuration;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.os.CountDownTimer;
import android.preference.PreferenceManager;
import android.view.Display;
import android.view.OrientationEventListener;
import android.view.Surface;
import android.view.View;
import android.view.WindowManager;
/* <!-- +++
import com.almalence.opencam_plus.ApplicationScreen;
import com.almalence.opencam_plus.PluginViewfinder;
import com.almalence.opencam_plus.R;
import com.almalence.opencam_plus.cameracontroller.CameraController;
+++ --> */
// <!-- -+-
import com.almalence.opencam.ApplicationScreen;
import com.almalence.opencam.PluginViewfinder;
import com.almalence.opencam.R;
import com.almalence.opencam.cameracontroller.CameraController;
//-+- -->
import com.almalence.util.Util;
import com.almalence.ui.RotateImageView;
/***
* Implements histogram (RGB and Luminance) based on preview image data
***/
public class HistogramVFPlugin extends PluginViewfinder
{
HistogramView histogram;
HistogramRGBView histogramRGB;
RotateImageView histogramRIV;
RotateImageView histogramRGBRIV;
private static final int RGB = 0;
private static final int LUMA = 1;
private static final int NONE = 2;
private int[] histFacts;
private int[] histFactsR;
private int[] histFactsG;
private int[] histFactsB;
private int frameCounter = 0;
public static Path histPath;
public static Path histPathR;
public static Path histPathG;
public static Path histPathB;
private int histoHeight = 0;
private int histoWidth = 0;
private static int histogramType = NONE;
//takes each X image, skipping other
private int skipImgNum = 6;
public HistogramVFPlugin()
{
super("com.almalence.plugins.histogramvf", R.xml.preferences_vf_histogram, 0,
R.drawable.gui_almalence_histogram_rgb, "Histogram");
}
@Override
public void onCreate()
{
UpdatePreferences();
histFacts = new int[256];
histPath = new Path();
histPath.setFillType(Path.FillType.EVEN_ODD);
if(this.histogram == null)
this.histogram = new HistogramView(ApplicationScreen.getMainContext());
else
removeViewQuick(this.histogram);
histFactsR = new int[256];
histPathR = new Path();
histPathR.setFillType(Path.FillType.EVEN_ODD);
histFactsG = new int[256];
histPathG = new Path();
histPathG.setFillType(Path.FillType.EVEN_ODD);
histFactsB = new int[256];
histPathB = new Path();
histPathB.setFillType(Path.FillType.EVEN_ODD);
if(this.histogramRGB == null)
this.histogramRGB = new HistogramRGBView(ApplicationScreen.getMainContext());
else
removeViewQuick(this.histogramRGB);
UpdatePreferences();
histogramRGB.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
onClickHistogram(true);
}
});
histogram.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
onClickHistogram(false);
}
});
clearViews();
if (histogramType == RGB)
addView(this.histogramRGB, ViewfinderZone.VIEWFINDER_ZONE_BOTTOM_LEFT);
else if (histogramType == LUMA)
addView(this.histogram, ViewfinderZone.VIEWFINDER_ZONE_BOTTOM_LEFT);
}
public void onClickHistogram(boolean isRGB)
{
if (ApplicationScreen.getGUIManager().lockControls)
{
return;
}
UpdatePreferences();
// save to shared prefs
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(ApplicationScreen.getMainContext());
Editor editor = prefs.edit();
editor.putString("PrefHistogramVF", isRGB ? "1" : "0");
histoHeight = (int) (ApplicationScreen.getGUIManager().getMaxPluginViewHeight() * 0.6);
histoWidth = (int) (ApplicationScreen.getGUIManager().getMaxPluginViewWidth() * 0.6);
android.widget.RelativeLayout.LayoutParams histLayoutParams = new android.widget.RelativeLayout.LayoutParams(
histoWidth, histoHeight);
if (isRGB)
HistogramVFPlugin.this.histogramRGB.setLayoutParams(histLayoutParams);
else
HistogramVFPlugin.this.histogram.setLayoutParams(histLayoutParams);
clearViews();
if (isRGB)
addView(HistogramVFPlugin.this.histogram);
else
addView(HistogramVFPlugin.this.histogramRGB);
if (isRGB)
{
ApplicationScreen.getGUIManager().removeViewQuick(HistogramVFPlugin.this.histogramRGB);
ApplicationScreen.getGUIManager().addViewQuick(HistogramVFPlugin.this.histogram,
PluginViewfinder.ViewfinderZone.VIEWFINDER_ZONE_BOTTOM_LEFT);
} else
{
ApplicationScreen.getGUIManager().removeViewQuick(HistogramVFPlugin.this.histogram);
ApplicationScreen.getGUIManager().addViewQuick(HistogramVFPlugin.this.histogramRGB,
PluginViewfinder.ViewfinderZone.VIEWFINDER_ZONE_BOTTOM_LEFT);
}
editor.commit();
UpdatePreferences();
}
@Override
public void onQuickControlClick()
{
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(ApplicationScreen.getMainContext());
Editor editor = prefs.edit();
switch (histogramType)
{
case RGB:
quickControlIconID = R.drawable.gui_almalence_histogram_luma;
editor.putString("PrefHistogramVF", "1");
break;
case LUMA:
quickControlIconID = R.drawable.gui_almalence_histogram_off;
editor.putString("PrefHistogramVF", "2");
break;
case NONE:
quickControlIconID = R.drawable.gui_almalence_histogram_rgb;
editor.putString("PrefHistogramVF", "0");
break;
default:
break;
}
editor.commit();
UpdatePreferences();
if (histogramType == NONE)
{
histogramRGB.setVisibility(View.GONE);
histogram.setVisibility(View.GONE);
} else
{
histogramRGB.setVisibility(View.VISIBLE);
histogram.setVisibility(View.VISIBLE);
showHisto();
}
}
public boolean needPreviewFrame()
{
if (histogramType == RGB || histogramType == LUMA)
return true;
else
return false;
}
void UpdatePreferences()
{
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(ApplicationScreen.getMainContext());
histogramType = Integer.parseInt(prefs.getString("PrefHistogramVF", "2"));
switch (histogramType)
{
case RGB:
quickControlIconID = R.drawable.gui_almalence_histogram_rgb;
break;
case LUMA:
quickControlIconID = R.drawable.gui_almalence_histogram_luma;
break;
case NONE:
quickControlIconID = R.drawable.gui_almalence_histogram_off;
break;
default:
break;
}
CameraController.checkNeedPreviewFrame();
}
public static int mDeviceOrientation;
@Override
public void onStart()
{
}
@Override
public void onResume()
{
UpdatePreferences();
if (histogramType == NONE)
{
histogramRGB.setVisibility(View.GONE);
histogram.setVisibility(View.GONE);
} else
{
new CountDownTimer(500, 500)
{
public void onTick(long millisUntilFinished)
{
}
public void onFinish()
{
histogramRGB.setVisibility(View.VISIBLE);
histogram.setVisibility(View.VISIBLE);
showHisto();
}
}.start();
}
}
private void showHisto()
{
histoHeight = (int) (ApplicationScreen.getGUIManager().getMaxPluginViewHeight() * 0.6);
histoWidth = (int) (ApplicationScreen.getGUIManager().getMaxPluginViewWidth() * 0.6);
android.widget.RelativeLayout.LayoutParams histLayoutParams = new android.widget.RelativeLayout.LayoutParams(
histoWidth, histoHeight);
histLayoutParams.setMargins(20, 0, 0, 0);
if (histogramType == RGB)
HistogramVFPlugin.this.histogramRGB.setLayoutParams(histLayoutParams);
else
HistogramVFPlugin.this.histogram.setLayoutParams(histLayoutParams);
clearViews();
if (histogramType == RGB)
addView(HistogramVFPlugin.this.histogramRGB);
else
addView(HistogramVFPlugin.this.histogram);
if (histogramType == RGB)
{
ApplicationScreen.getGUIManager().removeViewQuick(HistogramVFPlugin.this.histogram);
ApplicationScreen.getGUIManager().removeViewQuick(HistogramVFPlugin.this.histogramRGB);
ApplicationScreen.getGUIManager().addViewQuick(HistogramVFPlugin.this.histogramRGB,
PluginViewfinder.ViewfinderZone.VIEWFINDER_ZONE_BOTTOM_LEFT);
} else
{
ApplicationScreen.getGUIManager().removeViewQuick(HistogramVFPlugin.this.histogramRGB);
ApplicationScreen.getGUIManager().removeViewQuick(HistogramVFPlugin.this.histogram);
ApplicationScreen.getGUIManager().addViewQuick(HistogramVFPlugin.this.histogram,
PluginViewfinder.ViewfinderZone.VIEWFINDER_ZONE_BOTTOM_LEFT);
}
}
@Override
public void onPause()
{
}
@Override
public void onGUICreate()
{
if (histogramType == RGB)
{
histoHeight = (int) (ApplicationScreen.getGUIManager().getMaxPluginViewHeight() * 0.6);
histoWidth = (int) (ApplicationScreen.getGUIManager().getMaxPluginViewWidth() * 0.6);
android.widget.RelativeLayout.LayoutParams histLayoutParams = new android.widget.RelativeLayout.LayoutParams(
histoWidth, histoHeight);
histLayoutParams.setMargins(20, 0, 0, 0);
this.histogram.setLayoutParams(histLayoutParams);
} else if (histogramType == LUMA)
{
histoHeight = (int) (ApplicationScreen.getGUIManager().getMaxPluginViewHeight() * 0.6);
histoWidth = (int) (ApplicationScreen.getGUIManager().getMaxPluginViewWidth() * 0.6);
android.widget.RelativeLayout.LayoutParams histLayoutParams = new android.widget.RelativeLayout.LayoutParams(
histoWidth, histoHeight);
histLayoutParams.setMargins(20, 0, 0, 0);
this.histogramRGB.setLayoutParams(histLayoutParams);
}
}
@Override
public void onCameraSetup()
{
if (histogramType == NONE)
return;
}
@Override
public void onPreviewFrame(byte[] data)
{
if (histogramType == NONE)
return;
frameCounter++;
if (frameCounter != skipImgNum)
{
return;
}
int previewWidth = ApplicationScreen.getPreviewWidth();
int previewHeight = ApplicationScreen.getPreviewHeight();
if (histogramType == LUMA)
{
Histogram.createHistogram(data, histFacts, previewWidth, previewHeight, 256, histoHeight);
histPath.reset();
histPath.moveTo(0, histoHeight);
for (int i = 1; i < 256; i++)
{
histPath.lineTo(((float) histoWidth / 256) * i, histoHeight - histFacts[i]);
}
histPath.setLastPoint(histoWidth, histoHeight);
histogram.invalidate();
} else if (histogramType == RGB)
{
Histogram.createRGBHistogram(data, histFactsR, histFactsG, histFactsB, previewWidth, previewHeight, 256,
histoHeight);
histPathR.reset();
histPathR.moveTo(0, histoHeight);
histPathG.reset();
histPathG.moveTo(0, histoHeight);
histPathB.reset();
histPathB.moveTo(0, histoHeight);
for (int i = 1; i < 256; i++)
{
histPathR.lineTo(((float) histoWidth / 256) * i, histoHeight - histFactsR[i]);
histPathG.lineTo(((float) histoWidth / 256) * i, histoHeight - histFactsG[i]);
histPathB.lineTo(((float) histoWidth / 256) * i, histoHeight - histFactsB[i]);
}
histPathR.setLastPoint(histoWidth, histoHeight);
histPathG.setLastPoint(histoWidth, histoHeight);
histPathB.setLastPoint(histoWidth, histoHeight);
histogramRGB.invalidate();
}
frameCounter = 0;
}
@Override
public void onOrientationChanged(int orientation)
{
mDeviceOrientation = ApplicationScreen.getGUIManager().getLayoutOrientation();
}
}
class HistogramView extends View
{
private Paint histPaint;
public HistogramView(Context context)
{
super(context);
histPaint = new Paint();
histPaint.setColor(Color.WHITE);
histPaint.setAlpha(200);
histPaint.setStyle(Paint.Style.FILL);
histPaint.setStrokeWidth(1);
histPaint.setAntiAlias(true);
}
@Override
public void onDraw(Canvas canvas)
{
if (HistogramVFPlugin.mDeviceOrientation != 0)
{
canvas.rotate(-HistogramVFPlugin.mDeviceOrientation);
if (HistogramVFPlugin.mDeviceOrientation == 270)
canvas.translate(0, -getWidth());
else if (HistogramVFPlugin.mDeviceOrientation == 90)
canvas.translate(-getHeight(), 0);
else if (HistogramVFPlugin.mDeviceOrientation == 180)
canvas.translate(-getHeight(), -getWidth());
super.onDraw(canvas);
}
canvas.drawPath(HistogramVFPlugin.histPath, histPaint);
}
}
class HistogramRGBView extends View
{
private Paint histPaintR;
private Paint histPaintG;
private Paint histPaintB;
public HistogramRGBView(Context context)
{
super(context);
histPaintR = new Paint();
histPaintR.setColor(16741779);
histPaintR.setStyle(Paint.Style.FILL);
histPaintR.setStrokeWidth(1);
histPaintR.setAntiAlias(true);
histPaintR.setAlpha(180);
histPaintG = new Paint();
histPaintG.setColor(7733176);
histPaintG.setStyle(Paint.Style.FILL);
histPaintG.setStrokeWidth(1);
histPaintG.setAntiAlias(true);
histPaintG.setAlpha(180);
histPaintB = new Paint();
histPaintB.setColor(8943103);
histPaintB.setStyle(Paint.Style.FILL);
histPaintB.setStrokeWidth(1);
histPaintB.setAntiAlias(true);
histPaintB.setAlpha(180);
}
@Override
public void onDraw(Canvas canvas)
{
if (HistogramVFPlugin.mDeviceOrientation != 0)
{
canvas.rotate(-HistogramVFPlugin.mDeviceOrientation);
if (HistogramVFPlugin.mDeviceOrientation == 270)
canvas.translate(0, -getWidth());
else if (HistogramVFPlugin.mDeviceOrientation == 90)
canvas.translate(-getHeight(), 0);
else if (HistogramVFPlugin.mDeviceOrientation == 180)
canvas.translate(-getHeight(), -getWidth());
super.onDraw(canvas);
}
canvas.drawPath(HistogramVFPlugin.histPathR, histPaintR);
canvas.drawPath(HistogramVFPlugin.histPathG, histPaintG);
canvas.drawPath(HistogramVFPlugin.histPathB, histPaintB);
}
}