Esempio n. 1
0
  /**
   * Zoom in the graph
   *
   * <p>拡大表示する。
   *
   * <p>放大表示
   */
  public void zoomIn() {
    if (displayNumber > minDisplayNumber) {
      // 区分缩放方向
      if (zoomBaseLine == ZOOM_BASE_LINE_CENTER) {
        displayNumber = displayNumber - ZOOM_STEP;
        displayFrom = displayFrom + ZOOM_STEP / 2;
      } else if (zoomBaseLine == ZOOM_BASE_LINE_LEFT) {
        displayNumber = displayNumber - ZOOM_STEP;
      } else if (zoomBaseLine == ZOOM_BASE_LINE_RIGHT) {
        displayNumber = displayNumber - ZOOM_STEP;
        displayFrom = displayFrom + ZOOM_STEP;
      }

      // 处理displayNumber越界
      if (displayNumber < minDisplayNumber) {
        displayNumber = minDisplayNumber;
      }

      // 处理displayFrom越界
      if (displayFrom + displayNumber >= stickData.size()) {
        displayFrom = stickData.size() - displayNumber;
      }

      // Listener
      if (onZoomGestureListener != null) {
        onZoomGestureListener.onZoom(ZOOM_IN, displayFrom, displayNumber);
      }
    }
  }
Esempio n. 2
0
  /**
   * Zoom out the grid
   *
   * <p>縮小表示する。
   *
   * <p>缩小
   */
  public void zoomOut() {
    if (displayNumber < stickData.size() - 1) {
      if (displayNumber + ZOOM_STEP > stickData.size() - 1) {
        displayNumber = stickData.size() - 1;
        displayFrom = 0;
      } else {
        // 区分缩放方向
        if (zoomBaseLine == ZOOM_BASE_LINE_CENTER) {
          displayNumber = displayNumber + ZOOM_STEP;
          if (displayFrom > 1) {
            displayFrom = displayFrom - ZOOM_STEP / 2;
          } else {
            displayFrom = 0;
          }
        } else if (zoomBaseLine == ZOOM_BASE_LINE_LEFT) {
          displayNumber = displayNumber + ZOOM_STEP;
        } else if (zoomBaseLine == ZOOM_BASE_LINE_RIGHT) {
          displayNumber = displayNumber + ZOOM_STEP;
          if (displayFrom > ZOOM_STEP) {
            displayFrom = displayFrom - ZOOM_STEP;
          } else {
            displayFrom = 0;
          }
        }
      }

      if (displayFrom + displayNumber >= stickData.size()) {
        displayNumber = stickData.size() - displayFrom;
      }

      // Listener
      if (onZoomGestureListener != null) {
        onZoomGestureListener.onZoom(ZOOM_OUT, displayFrom, displayNumber);
      }
    }
  }