app/src/main/java/jp/sourceforge/gokigen/memoma/GokigenSurfaceView.java

   1 package jp.sourceforge.gokigen.memoma;
   2
   3 import android.content.Context;
   4 import android.graphics.Canvas;
   5 import android.util.AttributeSet;
   6 import android.util.Log;
   7 import android.view.MotionEvent;
   8 import android.view.SurfaceHolder;
   9 import android.view.SurfaceView;
  10
  11 import jp.sourceforge.gokigen.memoma.drawers.ICanvasDrawer;
  12
  13 /**
  14  *  描画するくらす
  15  *
  16  * @author MRSa
  17  *
  18  */
  19 public class GokigenSurfaceView extends SurfaceView implements SurfaceHolder.Callback
  20 {
  21         ICanvasDrawer canvasDrawer = null;
  22
  23         /**
  24      *  コンストラクタ
  25      * @param context
  26      */
  27         public GokigenSurfaceView(Context context)
  28     {
  29         super(context);
  30         initializeSelf(context, null);
  31     }
  32
  33         /**
  34          *  コンストラクタ
  35          * @param context
  36          * @param attrs
  37          */
  38         public GokigenSurfaceView(Context context, AttributeSet attrs)
  39         {
  40                 super(context, attrs);
  41                 initializeSelf(context, attrs);
  42         }
  43
  44     /**
  45      *   クラスの初期化処理
  46      * @param context
  47      * @param attrs
  48      */
  49     private void initializeSelf(Context context, AttributeSet attrs)
  50     {
  51         SurfaceHolder holder = getHolder();
  52         holder.addCallback(this);
  53     }
  54
  55     /**
  56      *  データ書き込みクラスの設定
  57      *
  58      * @param drawer
  59      */
  60     public void setCanvasDrawer(ICanvasDrawer drawer)
  61     {
  62         canvasDrawer = drawer;
  63     }
  64
  65     /**
  66      *   サーフェイス生成イベントの処理
  67      *
  68      */
  69     public void surfaceCreated(SurfaceHolder aHolder)
  70     {
  71         try
  72         {
  73                 if (canvasDrawer != null)
  74                 {
  75                     canvasDrawer.prepareToStart(getWidth(), getHeight());
  76                 }
  77                 doDraw();
  78         }
  79         catch (Exception ex)
  80         {
  81             //
  82         }
  83     }
  84
  85
  86     /**
  87      *   タッチイベント
  88      */
  89     @Override
  90     public boolean onTouchEvent(MotionEvent event)
  91     {
  92         boolean ret = false;
  93         if (canvasDrawer != null)
  94         {
  95             ret = canvasDrawer.onTouchEvent(event);
  96             if (ret == true)
  97             {
  98                 doDraw();
  99             }
 100         }
 101         return (ret);
 102     }
 103
 104
 105     /**
 106      *  サーフェイス変更イベントの処理
 107      *
 108      */
 109     public void surfaceChanged(SurfaceHolder aHolder, int format, int width, int height)
 110     {
 111         try
 112         {
 113                 if (canvasDrawer != null)
 114                 {
 115                     canvasDrawer.changedScreenProperty(format, width, height);
 116                 }
 117                 doDraw();
 118         }
 119         catch (Exception ex)
 120         {
 121             //
 122             //
 123             //
 124         }
 125     }
 126
 127     /**
 128      *  サーフェイス開放イベントの処理
 129      *
 130      */
 131     public void surfaceDestroyed(SurfaceHolder aHolder)
 132     {
 133         try
 134         {
 135             //
 136         }
 137         catch (Exception ex)
 138         {
 139             //
 140         }
 141     }
 142
 143     /**
 144      *  グラフィックを描画する
 145      */
 146     public void doDraw()
 147     {
 148                 //Log.v(Main.APP_IDENTIFIER, "GokigenSurfaceView::doDraw()");
 149
 150                 SurfaceHolder drawHolder = getHolder();
 151         try
 152         {
 153             Canvas canvas = drawHolder.lockCanvas();
 154                 if (canvas == null)
 155                 {
 156                         // 描画領域が取れないから抜けてしまう
 157                         Log.v(Main.APP_IDENTIFIER, "GokigenSurfaceView::doDraw()  canvas is null." );
 158                         return;
 159                 }
 160             canvas.save();
 161             //////////////////////////////////////////////
 162             if (canvasDrawer != null)
 163             {
 164                 canvasDrawer.drawOnCanvas(canvas);
 165             }
 166             /////////////////////////////////////////////
 167             canvas.restore();
 168             drawHolder.unlockCanvasAndPost(canvas);
 169         }
 170         catch (Exception ex)
 171         {
 172                 Log.v(Main.APP_IDENTIFIER, "ex.(doDraw())>" +  ex.toString() + " " + ex.getMessage());
 173         }
 174     }
 175
 176 }