PDFタップ時、x, yの座標変換の計算処理の整理

ABVJE_UI_Android/src/jp/agentec/abook/abv/ui/viewer/view/ZoomRelativeLayout.java

@@ -654,8 +654,8 @@ public class ZoomRelativeLayout extends RelativeLayout {
 
 		float scaleX = (float)mAuthoringPageSize.width / getScaledPDFWidth(pdfMatrix[Matrix.MSCALE_X]);
 		float scaleY = (float)mAuthoringPageSize.height / getScaledPDFHeight(pdfMatrix[Matrix.MSCALE_Y]);
-		float pdfX = (x * scaleX) - (pdfMatrix[Matrix.MTRANS_X] * scaleX);
-		float pdfY = (y * scaleY) - (pdfMatrix[Matrix.MTRANS_Y] * scaleY);
+		float pdfX = (x - pdfMatrix[Matrix.MTRANS_X]) * scaleX;
+		float pdfY = (y - pdfMatrix[Matrix.MTRANS_Y]) * scaleY;
 
 		return new PointF(pdfX, pdfY);
 	}