app/src/main/java/jp/sourceforge/gokigen/memoma/drawers/ObjectShapeDrawer.java

   1 package jp.sourceforge.gokigen.memoma.drawers;
   2
   3 import android.graphics.Canvas;
   4 import android.graphics.Color;
   5 import android.graphics.Matrix;
   6 import android.graphics.Paint;
   7 import android.graphics.Path;
   8 import android.graphics.RectF;
   9 import jp.sourceforge.gokigen.memoma.holders.MeMoMaObjectHolder;
  10
  11 /**
  12  *   めもまのオブジェクト・ライン・ラベルを描画するメソッド群
  13  *   (現在のところ、MeMoMaCanvasDrawerクラスから追い出してきただけ...)
  14  *
  15  * @author MRSa
  16  *
  17  */
  18 public class ObjectShapeDrawer
  19 {
  20
  21
  22     static public float drawObjectOval(Canvas canvas, RectF objectShape, Paint paint)
  23     {
  24         // 楕円形の描画
  25         canvas.drawOval(objectShape, paint);
  26
  27         return (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN / 2);
  28     }
  29
  30     static public float drawObjectRect(Canvas canvas, RectF objectShape, Paint paint)
  31     {
  32                 // 四角形を描画する
  33         canvas.drawRect(objectShape, paint);
  34         return (0.0f);
  35     }
  36
  37     static public float drawObjectRoundRect(Canvas canvas, RectF objectShape, Paint paint)
  38     {
  39                 // 丸角四角形の描画
  40         canvas.drawRoundRect(objectShape, MeMoMaObjectHolder.ROUNDRECT_CORNER_RX, MeMoMaObjectHolder.ROUNDRECT_CORNER_RY, paint);
  41
  42         return (0.0f);
  43     }
  44
  45     static public float drawObjectDiamond(Canvas canvas, RectF objectShape, Paint paint)
  46     {
  47                 // 菱形の描画
  48         Path path = new Path();
  49         path.moveTo(objectShape.centerX(), objectShape.top);
  50         path.lineTo(objectShape.left, objectShape.centerY());
  51         path.lineTo(objectShape.centerX(), objectShape.bottom);
  52         path.lineTo(objectShape.right, objectShape.centerY());
  53         path.lineTo(objectShape.centerX(), objectShape.top);
  54         canvas.drawPath(path, paint);
  55         return (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN / 2);
  56     }
  57
  58     static public float drawObjectKeyboard(Canvas canvas, RectF objectShape, Paint paint)
  59     {
  60                 // 台形(キーボード型)の描画
  61         Path path = new Path();
  62         path.moveTo(objectShape.left, objectShape.centerY() - MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN);
  63         path.lineTo(objectShape.left, objectShape.bottom);
  64         path.lineTo(objectShape.right, objectShape.bottom);
  65         path.lineTo(objectShape.right, objectShape.top);
  66         path.lineTo(objectShape.left, objectShape.centerY() - MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN);
  67         canvas.drawPath(path, paint);
  68         return (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN);
  69     }
  70
  71     static public float drawObjectParallelogram(Canvas canvas, RectF objectShape, Paint paint)
  72     {
  73                 // 平行四辺形の描画
  74         Path path = new Path();
  75         path.moveTo(objectShape.left + MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN, objectShape.top);
  76         path.lineTo(objectShape.left, objectShape.bottom);
  77         path.lineTo(objectShape.right - MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN, objectShape.bottom);
  78         path.lineTo(objectShape.right, objectShape.top);
  79         path.lineTo(objectShape.left + MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN, objectShape.top);
  80         canvas.drawPath(path, paint);
  81         return (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN / 2.0f);
  82     }
  83
  84     static public float drawObjectHexagonal(Canvas canvas, RectF objectShape, Paint paint)
  85     {
  86                 // 六角形の描画
  87         Path path = new Path();
  88         float margin = MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN * 2;
  89         path.moveTo(objectShape.left + margin, objectShape.top);
  90         path.lineTo(objectShape.left, objectShape.centerY());
  91         path.lineTo(objectShape.left + margin, objectShape.bottom);
  92         path.lineTo(objectShape.right - margin, objectShape.bottom);
  93         path.lineTo(objectShape.right, objectShape.centerY());
  94         path.lineTo(objectShape.right - margin, objectShape.top);
  95         path.lineTo(objectShape.left + margin, objectShape.top);
  96         canvas.drawPath(path, paint);
  97         return (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN / 2.0f);
  98     }
  99
 100     static public float drawObjectPaper(Canvas canvas, RectF objectShape, Paint paint)
 101     {
 102                 // 書類の形の描画
 103         float margin = MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN * 3.0f;
 104         Path path = new Path();
 105         path.moveTo(objectShape.left, objectShape.top);
 106         path.lineTo(objectShape.left, objectShape.bottom - margin);
 107         path.cubicTo((objectShape.left + objectShape.centerX()) / 2.0f , objectShape.bottom, (objectShape.right + objectShape.centerX()) / 2.0f, objectShape.bottom - margin, objectShape.right, objectShape.bottom - margin);
 108         path.lineTo(objectShape.right, objectShape.top);
 109         path.lineTo(objectShape.left, objectShape.top);
 110         canvas.drawPath(path, paint);
 111         return ( - MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN);
 112     }
 113
 114     static public float drawObjectDrum(Canvas canvas, RectF objectShape, Paint paint, Paint.Style paintStyle)
 115     {
 116                 float margin = MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN * 1.0f;
 117                 // 円柱の描画
 118         Path path = new Path();
 119         path.moveTo(objectShape.left, objectShape.top);
 120         path.arcTo(new RectF(objectShape.left, objectShape.top,objectShape.right, objectShape.top + margin), 180.0f, 359.999f, true);
 121         path.lineTo(objectShape.left, objectShape.bottom - (margin / 2.0f));
 122         path.arcTo(new RectF(objectShape.left, objectShape.bottom - margin, objectShape.right, objectShape.bottom), 180.0f, -180.0f, true);
 123         path.lineTo(objectShape.right, objectShape.top + (margin / 2.0f));
 124         if (paintStyle != Paint.Style.STROKE)
 125         {
 126                 // 塗りつぶし用に線の領域を追加する
 127             path.arcTo(new RectF(objectShape.left, objectShape.top, objectShape.right, objectShape.top + margin), 180.0f, 180.0f, true);
 128             path.lineTo(objectShape.left, objectShape.bottom - (margin / 2.0f));
 129             path.arcTo(new RectF(objectShape.left, objectShape.bottom - margin, objectShape.right, objectShape.bottom), 180.0f, -180.0f, true);
 130         }
 131         canvas.drawPath(path, paint);
 132         return (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN / 2.0f);
 133     }
 134
 135     static public float drawObjectCircle(Canvas canvas, RectF objectShape, Paint paint)
 136     {
 137                 // 円を描画する
 138         canvas.drawCircle(objectShape.centerX(), objectShape.centerY(), ((objectShape.right - objectShape.left)/ 2.0f), paint);
 139         return (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN / 2.0f);
 140     }
 141
 142     static public float drawObjectNoRegion(Canvas canvas, RectF objectShape, Paint paint)
 143     {
 144                 // 何も表示しないとわからないので、ラベルが無いときには枠を表示する
 145         paint.setColor(Color.DKGRAY);
 146         canvas.drawRect(objectShape, paint);
 147         paint.setColor(Color.WHITE);
 148         return (0.0f);
 149     }
 150
 151     static public float drawObjectLoopStart(Canvas canvas, RectF objectShape, Paint paint)
 152     {
 153                 // ループ開始図形の描画
 154         Path path = new Path();
 155         float margin = MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN * 2;
 156         path.moveTo(objectShape.left + margin, objectShape.top);
 157         path.lineTo(objectShape.left, objectShape.centerY());
 158         path.lineTo(objectShape.left, objectShape.bottom);
 159         path.lineTo(objectShape.right, objectShape.bottom);
 160         path.lineTo(objectShape.right, objectShape.centerY());
 161         path.lineTo(objectShape.right - margin, objectShape.top);
 162         path.lineTo(objectShape.left + margin, objectShape.top);
 163         canvas.drawPath(path, paint);
 164         return (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN / 2.0f);
 165     }
 166
 167     static public float drawObjectLoopEnd(Canvas canvas, RectF objectShape, Paint paint)
 168     {
 169                 // ループ終了図形の描画
 170         Path path = new Path();
 171         float margin = MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN * 2;
 172         path.moveTo(objectShape.left, objectShape.top);
 173         path.lineTo(objectShape.left, objectShape.centerY());
 174         path.lineTo(objectShape.left + margin, objectShape.bottom);
 175         path.lineTo(objectShape.right - margin, objectShape.bottom);
 176         path.lineTo(objectShape.right, objectShape.centerY());
 177         path.lineTo(objectShape.right, objectShape.top);
 178         path.lineTo(objectShape.left, objectShape.top);
 179         canvas.drawPath(path, paint);
 180         return (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN / 2.0f);
 181     }
 182
 183     static public float drawObjectLeftArrow(Canvas canvas, RectF objectShape, Paint paint)
 184     {
 185                 // 左側矢印図形の描画
 186         Path path = new Path();
 187         float margin = MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN * 4.0f;
 188         path.moveTo(objectShape.left + margin, objectShape.top);
 189         path.lineTo(objectShape.left, objectShape.centerY());
 190         path.lineTo(objectShape.left + margin, objectShape.bottom);
 191         path.lineTo(objectShape.right, objectShape.bottom);
 192         path.lineTo(objectShape.right, objectShape.top);
 193         path.lineTo(objectShape.left + margin, objectShape.top);
 194         canvas.drawPath(path, paint);
 195         return (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN / 2.0f);
 196     }
 197
 198     static public float drawObjectDownArrow(Canvas canvas, RectF objectShape, Paint paint)
 199     {
 200                 // 下側矢印図形の描画
 201         Path path = new Path();
 202         float margin = MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN * 2;
 203         path.moveTo(objectShape.left, objectShape.top);
 204         path.lineTo(objectShape.left, objectShape.centerY() + margin);
 205         path.lineTo(objectShape.centerX(), objectShape.bottom);
 206         path.lineTo(objectShape.right, objectShape.centerY() + margin);
 207         path.lineTo(objectShape.right, objectShape.top);
 208         path.lineTo(objectShape.left, objectShape.top);
 209         canvas.drawPath(path, paint);
 210         return (- MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN);
 211     }
 212
 213     static public float drawObjectUpArrow(Canvas canvas, RectF objectShape, Paint paint)
 214     {
 215                 // 上側矢印図形の描画
 216         Path path = new Path();
 217         float margin = MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN * 2.0f;
 218         path.moveTo(objectShape.centerX(), objectShape.top);
 219         path.lineTo(objectShape.left, objectShape.centerY() - margin);
 220         path.lineTo(objectShape.left, objectShape.bottom);
 221         path.lineTo(objectShape.right, objectShape.bottom);
 222         path.lineTo(objectShape.right, objectShape.centerY() - margin);
 223         path.lineTo(objectShape.centerX(), objectShape.top);
 224         canvas.drawPath(path, paint);
 225         return (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN / 2.0f);
 226     }
 227
 228     static public float drawObjectRightArrow(Canvas canvas, RectF objectShape, Paint paint)
 229     {
 230                 // 右側矢印図形の描画
 231         Path path = new Path();
 232         float margin = MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN * 4.0f;
 233         path.moveTo(objectShape.left, objectShape.top);
 234         path.lineTo(objectShape.left, objectShape.bottom);
 235         path.lineTo(objectShape.right - margin, objectShape.bottom);
 236         path.lineTo(objectShape.right, objectShape.centerY());
 237         path.lineTo(objectShape.right - margin, objectShape.top);
 238         path.lineTo(objectShape.left, objectShape.top);
 239         canvas.drawPath(path, paint);
 240         return (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN / 2.0f);
 241     }
 242
 243     static public void drawLineStraight(Canvas canvas)
 244     {
 245
 246     }
 247           /**
 248            *    矢印を描画する処理 (ツリー表示時)
 249            *
 250            */
 251         static public void drawArrowTree(Canvas canvas, Paint paint, float x1, float y1, float checkValue, boolean isXaxis)
 252     {
 253                 float margin = 8.0f;
 254                 float direction;
 255                 if (isXaxis)
 256         {
 257                     direction = (checkValue < x1) ? -1.0f : 1.0f;
 258             canvas.drawLine(x1, y1, (x1 + direction * margin), (y1 - margin), paint);
 259                 canvas.drawLine(x1, y1, (x1 + direction * margin), (y1 + margin), paint);
 260                 }
 261                 else
 262                 {
 263                     direction = (checkValue < y1) ? -1.0f : 1.0f;
 264                 canvas.drawLine(x1, y1, (x1 - margin), (y1 + direction * margin), paint);
 265                 canvas.drawLine(x1, y1, (x1 + margin), (y1 + direction * margin), paint);
 266                 }
 267     }
 268           /**
 269            *    矢印を描画する処理
 270            *
 271            */
 272           static public void drawArrow(Canvas canvas, Paint paint, float x1, float y1, float x2, float y2)
 273           {
 274           // 矢印線の長さ
 275                   float moveX = 14.0f;
 276
 277                   // 接続線の傾きが、どれくらいの角度で入っているか？
 278                   float centerDegree = (float) (Math.atan2((y2 - y1) , (x2 - x1))  * 180.0d / Math.PI);
 279
 280                   // x1, y1 に x2, y2 方向から来た線に合わせた矢印を描画する
 281                   // (2本、１本づつ引いて、それを回転行列で回転させている)
 282
 283                   // 回転行列の準備
 284                   Matrix matrix1 = new Matrix();
 285                   matrix1.setRotate((centerDegree + 30), x1, y1);
 286               Matrix matrix2 = new Matrix();
 287                   matrix2.setRotate((centerDegree - 30), x1, y1);
 288
 289                   // 線分を引いた後、回転行列で回転させる
 290                   Path pathLine1 = new Path();
 291               pathLine1.moveTo(x1, y1);
 292               pathLine1.lineTo(x1 + moveX, y1);
 293               pathLine1.transform(matrix1);
 294               canvas.drawPath(pathLine1, paint);
 295
 296                   Path pathLine2 = new Path();
 297               pathLine2.moveTo(x1, y1);
 298               pathLine2.lineTo(x1 + moveX, y1);
 299               pathLine2.transform(matrix2);
 300               canvas.drawPath(pathLine2, paint);
 301     }
 302
 303           /**
 304              *    オブジェクトのラベルを表示する
 305              *
 306              */
 307             public static void drawTextLabel(Canvas canvas, Paint paint, MeMoMaObjectHolder.PositionObject pos, RectF region, int displayObjectInformation, float offsetX, float offsetY)
 308             {
 309                 // タイトルの先頭部分を表示する場合...
 310                 String labelToShow = pos.label;
 311                 if (displayObjectInformation == 0)
 312                 {
 313                 float width = region.width() - MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN_WIDTH;
 314                 int textLen = paint.breakText(pos.label, true, width, null);  // 省略文字を追加するから、そのぶん減らす
 315                 labelToShow = labelToShow.substring(0, textLen);
 316                 if (!labelToShow.equals(pos.label))
 317                 {
 318                         // truncate した場合には、省略文字を出す。
 319                         labelToShow = labelToShow + "...";
 320                 }
 321                 }
 322
 323                 if (Paint.Style.valueOf(pos.paintStyle) != Paint.Style.STROKE)
 324                 {
 325                     // オブジェクトを塗りつぶすのときは、文字の色を設定する
 326                     paint.setColor(pos.labelColor);
 327                 }
 328
 329                 // 文字をちょっと影付きにする
 330             paint.setStyle(Paint.Style.FILL_AND_STROKE);
 331                 paint.setShadowLayer(0.7f, 0.7f, 0.7f, Color.DKGRAY);
 332
 333                 // ユーザチェックの描画
 334                 if (pos.userChecked)
 335                 {
 336                         canvas.drawText("*", region.centerX(), region.top + (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN * 2.0f), paint);
 337                }
 338
 339                 // 強調表示
 340                 if (pos.strokeWidth != 0.0f)
 341                 {
 342                         // そのまま表示すると、読めないので、太さを調整し、アンダーラインを引くことにする
 343                         paint.setStrokeWidth(0.0f);
 344                     paint.setSubpixelText(true);
 345                     paint.setUnderlineText (true);
 346                 }
 347
 348                 if (displayObjectInformation == 0)
 349                 {
 350                         // １行分しか表示しない場合...そのまま表示して終了する
 351                     canvas.drawText(labelToShow, (region.left + offsetX),   (region.centerY() + offsetY), paint);
 352                     return;
 353                 }
 354
 355                 float tall = paint.getFontMetrics().top + 1.0f;
 356                 float posX = (region.left + offsetX);
 357                 float posY =  (region.centerY() + offsetY);
 358                 float width = region.right - region.left - 12.0f;  // 幅
 359
 360                 int startChar  = 0;
 361                 int endChar = pos.label.length();
 362                 do
 363                 {
 364                     int textLen = paint.breakText(pos.label, startChar, endChar, true, width, null);
 365                     canvas.drawText(labelToShow, startChar, (startChar +textLen), posX, posY, paint);
 366
 367                     posY = posY - tall;
 368                     startChar = startChar + textLen;
 369                 } while (startChar < endChar);
 370             }
 371 }