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 import jp.sourceforge.gokigen.memoma.holders.PositionObject;
  11
  12 /**
  13  *   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
  14  *   (現在のところ、MeMoMaCanvasDrawerクラスから追い出してきただけ...)
  15  *
  16  * @author MRSa
  17  *
  18  */
  19 public class ObjectShapeDrawer
  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;
 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 void 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     }
 149
 150     static public float drawObjectLoopStart(Canvas canvas, RectF objectShape, Paint paint)
 151     {
 152                 // ループ開始図形の描画
 153         Path path = new Path();
 154         float margin = MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN * 2;
 155         path.moveTo(objectShape.left + margin, objectShape.top);
 156         path.lineTo(objectShape.left, objectShape.centerY());
 157         path.lineTo(objectShape.left, objectShape.bottom);
 158         path.lineTo(objectShape.right, objectShape.bottom);
 159         path.lineTo(objectShape.right, objectShape.centerY());
 160         path.lineTo(objectShape.right - margin, objectShape.top);
 161         path.lineTo(objectShape.left + margin, objectShape.top);
 162         canvas.drawPath(path, paint);
 163         return (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN / 2.0f);
 164     }
 165
 166     static public float drawObjectLoopEnd(Canvas canvas, RectF objectShape, Paint paint)
 167     {
 168                 // ループ終了図形の描画
 169         Path path = new Path();
 170         float margin = MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN * 2;
 171         path.moveTo(objectShape.left, objectShape.top);
 172         path.lineTo(objectShape.left, objectShape.centerY());
 173         path.lineTo(objectShape.left + margin, objectShape.bottom);
 174         path.lineTo(objectShape.right - margin, objectShape.bottom);
 175         path.lineTo(objectShape.right, objectShape.centerY());
 176         path.lineTo(objectShape.right, objectShape.top);
 177         path.lineTo(objectShape.left, objectShape.top);
 178         canvas.drawPath(path, paint);
 179         return (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN / 2.0f);
 180     }
 181
 182     static public float drawObjectLeftArrow(Canvas canvas, RectF objectShape, Paint paint)
 183     {
 184                 // 左側矢印図形の描画
 185         Path path = new Path();
 186         float margin = MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN * 4.0f;
 187         path.moveTo(objectShape.left + margin, objectShape.top);
 188         path.lineTo(objectShape.left, objectShape.centerY());
 189         path.lineTo(objectShape.left + margin, objectShape.bottom);
 190         path.lineTo(objectShape.right, objectShape.bottom);
 191         path.lineTo(objectShape.right, objectShape.top);
 192         path.lineTo(objectShape.left + margin, objectShape.top);
 193         canvas.drawPath(path, paint);
 194         return (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN / 2.0f);
 195     }
 196
 197     static public float drawObjectDownArrow(Canvas canvas, RectF objectShape, Paint paint)
 198     {
 199                 // 下側矢印図形の描画
 200         Path path = new Path();
 201         float margin = MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN * 2;
 202         path.moveTo(objectShape.left, objectShape.top);
 203         path.lineTo(objectShape.left, objectShape.centerY() + margin);
 204         path.lineTo(objectShape.centerX(), objectShape.bottom);
 205         path.lineTo(objectShape.right, objectShape.centerY() + margin);
 206         path.lineTo(objectShape.right, objectShape.top);
 207         path.lineTo(objectShape.left, objectShape.top);
 208         canvas.drawPath(path, paint);
 209         return (- MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN);
 210     }
 211
 212     static public float drawObjectUpArrow(Canvas canvas, RectF objectShape, Paint paint)
 213     {
 214                 // 上側矢印図形の描画
 215         Path path = new Path();
 216         float margin = MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN * 2.0f;
 217         path.moveTo(objectShape.centerX(), objectShape.top);
 218         path.lineTo(objectShape.left, objectShape.centerY() - margin);
 219         path.lineTo(objectShape.left, objectShape.bottom);
 220         path.lineTo(objectShape.right, objectShape.bottom);
 221         path.lineTo(objectShape.right, objectShape.centerY() - margin);
 222         path.lineTo(objectShape.centerX(), objectShape.top);
 223         canvas.drawPath(path, paint);
 224         return (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN / 2.0f);
 225     }
 226
 227     static public float drawObjectRightArrow(Canvas canvas, RectF objectShape, Paint paint)
 228     {
 229                 // 右側矢印図形の描画
 230         Path path = new Path();
 231         float margin = MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN * 4.0f;
 232         path.moveTo(objectShape.left, objectShape.top);
 233         path.lineTo(objectShape.left, objectShape.bottom);
 234         path.lineTo(objectShape.right - margin, objectShape.bottom);
 235         path.lineTo(objectShape.right, objectShape.centerY());
 236         path.lineTo(objectShape.right - margin, objectShape.top);
 237         path.lineTo(objectShape.left, objectShape.top);
 238         canvas.drawPath(path, paint);
 239         return (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN / 2.0f);
 240     }
 241
 242           /**
 243            *    矢印を描画する処理 (ツリー表示時)
 244            *
 245            */
 246         static public void drawArrowTree(Canvas canvas, Paint paint, float x1, float y1, float checkValue, boolean isXaxis)
 247     {
 248                 float margin = 8.0f;
 249                 float direction;
 250                 if (isXaxis)
 251         {
 252                     direction = (checkValue < x1) ? -1.0f : 1.0f;
 253             canvas.drawLine(x1, y1, (x1 + direction * margin), (y1 - margin), paint);
 254                 canvas.drawLine(x1, y1, (x1 + direction * margin), (y1 + margin), paint);
 255                 }
 256                 else
 257                 {
 258                     direction = (checkValue < y1) ? -1.0f : 1.0f;
 259                 canvas.drawLine(x1, y1, (x1 - margin), (y1 + direction * margin), paint);
 260                 canvas.drawLine(x1, y1, (x1 + margin), (y1 + direction * margin), paint);
 261                 }
 262     }
 263           /**
 264            *    矢印を描画する処理
 265            *
 266            */
 267           static public void drawArrow(Canvas canvas, Paint paint, float x1, float y1, float x2, float y2)
 268           {
 269           // 矢印線の長さ
 270                   float moveX = 14.0f;
 271
 272                   // 接続線の傾きが、どれくらいの角度で入っているか？
 273                   float centerDegree = (float) (Math.atan2((y2 - y1) , (x2 - x1))  * 180.0d / Math.PI);
 274
 275                   // x1, y1 に x2, y2 方向から来た線に合わせた矢印を描画する
 276                   // (2本、１本づつ引いて、それを回転行列で回転させている)
 277
 278                   // 回転行列の準備
 279                   Matrix matrix1 = new Matrix();
 280                   matrix1.setRotate((centerDegree + 30), x1, y1);
 281               Matrix matrix2 = new Matrix();
 282                   matrix2.setRotate((centerDegree - 30), x1, y1);
 283
 284                   // 線分を引いた後、回転行列で回転させる
 285                   Path pathLine1 = new Path();
 286               pathLine1.moveTo(x1, y1);
 287               pathLine1.lineTo(x1 + moveX, y1);
 288               pathLine1.transform(matrix1);
 289               canvas.drawPath(pathLine1, paint);
 290
 291                   Path pathLine2 = new Path();
 292               pathLine2.moveTo(x1, y1);
 293               pathLine2.lineTo(x1 + moveX, y1);
 294               pathLine2.transform(matrix2);
 295               canvas.drawPath(pathLine2, paint);
 296     }
 297
 298           /**
 299              *    オブジェクトのラベルを表示する
 300              *
 301              */
 302       public static void drawTextLabel(Canvas canvas, Paint paint, PositionObject pos, RectF region, int displayObjectInformation, float offsetX, float offsetY)
 303       {
 304           // タイトルの先頭部分を表示する場合...
 305           String labelToShow = pos.getLabel();
 306           if (displayObjectInformation == 0)
 307           {
 308               float width = region.width() - MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN_WIDTH;
 309               int textLen = paint.breakText(pos.getLabel(), true, width, null);  // 省略文字を追加するから、そのぶん減らす
 310               labelToShow = labelToShow.substring(0, textLen);
 311               if (!labelToShow.equals(pos.getLabel()))
 312               {
 313                   // truncate した場合には、省略文字を出す。
 314                   labelToShow = labelToShow + "...";
 315               }
 316           }
 317
 318           if (Paint.Style.valueOf(pos.getPaintStyle()) != Paint.Style.STROKE)
 319           {
 320               // 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
 321               paint.setColor(pos.getLabelColor());
 322           }
 323
 324           // 文字をちょっと影付きにする
 325           paint.setStyle(Paint.Style.FILL_AND_STROKE);
 326           paint.setShadowLayer(0.7f, 0.7f, 0.7f, Color.DKGRAY);
 327
 328           // ユーザチェックの描画
 329           if (pos.getUserChecked())
 330           {
 331               canvas.drawText("*", region.centerX(), region.top + (MeMoMaCanvasDrawer.OBJECTLABEL_MARGIN * 2.0f), paint);
 332           }
 333
 334           // 強調表示
 335           if (pos.getstrokeWidth() != 0.0f)
 336           {
 337               // 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
 338               paint.setStrokeWidth(0.0f);
 339               paint.setSubpixelText(true);
 340               paint.setUnderlineText (true);
 341           }
 342
 343           if (displayObjectInformation == 0)
 344           {
 345               // １行分しか表示しない場合...そのまま表示して終了する
 346               canvas.drawText(labelToShow, (region.left + offsetX),   (region.centerY() + offsetY), paint);
 347               return;
 348           }
 349
 350           float tall = paint.getFontMetrics().top + 1.0f;
 351           float posX = (region.left + offsetX);
 352           float posY =  (region.centerY() + offsetY);
 353           float width = region.right - region.left - 12.0f;  // 幅
 354
 355           int startChar  = 0;
 356           int endChar = pos.getLabel().length();
 357           do
 358           {
 359               int textLen = paint.breakText(pos.getLabel(), startChar, endChar, true, width, null);
 360               canvas.drawText(labelToShow, startChar, (startChar +textLen), posX, posY, paint);
 361
 362               posY = posY - tall;
 363               startChar = startChar + textLen;
 364           } while (startChar < endChar);
 365       }
 366 }