Android实现长图文截图功能实例代码

  /** Window flag: this window won't ever get key input focus, so the
   * user can not send key or other button events to it. Those will
   * instead go to whatever focusable window is behind it. This flag
   * will also enable {@link #FLAG_NOT_TOUCH_MODAL} whether or not that
   * is explicitly set.
   *
   * <p>Setting this flag also implies that the window will not need to
   * interact with
   * a soft input method, so it will be Z-ordered and positioned
   * independently of any active input method (typically this means it
   * gets Z-ordered on top of the input method, so it can use the full
   * screen for its content and cover the input method if needed. You
   * can use {@link #FLAG_ALT_FOCUSABLE_IM} to modify this behavior. */
  public static final int FLAG_NOT_FOCUSABLE  = 0x00000008;

  /** Window flag: this window can never receive touch events. */
  public static final int FLAG_NOT_TOUCHABLE  = 0x00000010;

  /** Window flag: even when this window is focusable (its
   * {@link #FLAG_NOT_FOCUSABLE} is not set), allow any pointer events
   * outside of the window to be sent to the windows behind it. Otherwise
   * it will consume all pointer events itself, regardless of whether they
   * are inside of the window. */
  public static final int FLAG_NOT_TOUCH_MODAL = 0x00000020;
  /** Window flag: if you have set {@link #FLAG_NOT_TOUCH_MODAL}, you
   * can set this flag to receive a single special MotionEvent with
   * the action
   * {@link MotionEvent#ACTION_OUTSIDE MotionEvent.ACTION_OUTSIDE} for
   * touches that occur outside of your window. Note that you will not
   * receive the full down/move/up gesture, only the location of the
   * first down as an ACTION_OUTSIDE.
   */
  public static final int FLAG_WATCH_OUTSIDE_TOUCH = 0x00040000;

JNIEXPORT void JNICALL Java_com_zfw_screenshot_utils_SewUtils_merge(
  JNIEnv *env, jobject thiz, jobject bmp0, jobject bmp1, jobject bmp2, int h0, int h2, int h3, int samePart, int len) {

 int *pixels_0 = lockPixel(env, bmp0);
 int *pixels_1 = lockPixel(env, bmp1);
 int *pixels_2 = lockPixel(env, bmp2);
 /* -------------------- merge the difference ----------------------- */
 int index = 0;
 while(index < h0) {
  if(index < h2) {
   getRowPixels(pixels_0, index, pixels_1, index, len);
  } else {
   getRowPixels(pixels_0, index, pixels_2, index - h2 + samePart, len);
  }
  index++;
 }
 /* -------------------- merge the difference ----------------------- */
 unlockPixel(env, bmp0);
 unlockPixel(env, bmp1);
 unlockPixel(env, bmp2);
}