Exemplo n.º 1
0
 /**
  * Sets the receiver's caret.
  *
  * <p>The caret for the control is automatically hidden and shown when the control is painted or
  * resized, when focus is gained or lost and when an the control is scrolled. To avoid drawing on
  * top of the caret, the programmer must hide and show the caret when drawing in the window any
  * other time.
  *
  * @param caret the new caret for the receiver, may be null
  * @exception IllegalArgumentException
  *     <ul>
  *       <li>ERROR_INVALID_ARGUMENT - if the caret has been disposed
  *     </ul>
  *
  * @exception SWTException
  *     <ul>
  *       <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  *       <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
  *     </ul>
  */
 public void setCaret(Caret caret) {
   checkWidget();
   Caret newCaret = caret;
   Caret oldCaret = this.caret;
   this.caret = newCaret;
   if (hasFocus()) {
     if (oldCaret != null) oldCaret.killFocus();
     if (newCaret != null) {
       if (newCaret.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
       newCaret.setFocus();
     }
   }
 }
Exemplo n.º 2
0
 @Override
 long /*int*/ windowProc(long /*int*/ hwnd, int msg, long /*int*/ wParam, long /*int*/ lParam) {
   if (msg == Display.SWT_RESTORECARET) {
     if ((state & CANVAS) != 0) {
       if (caret != null) {
         caret.killFocus();
         caret.setFocus();
         return 1;
       }
     }
   }
   return super.windowProc(hwnd, msg, wParam, lParam);
 }
Exemplo n.º 3
0
 @Override
 LRESULT WM_WINDOWPOSCHANGED(long /*int*/ wParam, long /*int*/ lParam) {
   LRESULT result = super.WM_WINDOWPOSCHANGED(wParam, lParam);
   // if (result != null) return result;
   /*
    * Bug in Windows.  When a window with style WS_EX_LAYOUTRTL
    * that contains a caret is resized, Windows does not move the
    * caret in relation to the mirrored origin in the top right.
    * The fix is to hide the caret in WM_WINDOWPOSCHANGING and
    * show the caret in WM_WINDOWPOSCHANGED.
    */
   boolean isFocus = (style & SWT.RIGHT_TO_LEFT) != 0 && caret != null && caret.isFocusCaret();
   if (isFocus) caret.setFocus();
   return result;
 }
Exemplo n.º 4
0
 @Override
 LRESULT WM_SETFOCUS(long /*int*/ wParam, long /*int*/ lParam) {
   LRESULT result = super.WM_SETFOCUS(wParam, lParam);
   if (caret != null && caret.isFocusCaret()) caret.setFocus();
   return result;
 }
Exemplo n.º 5
0
 void scrollInPixels(int destX, int destY, int x, int y, int width, int height, boolean all) {
   forceResize();
   boolean isFocus = caret != null && caret.isFocusCaret();
   if (isFocus) caret.killFocus();
   RECT sourceRect = new RECT();
   OS.SetRect(sourceRect, x, y, x + width, y + height);
   RECT clientRect = new RECT();
   OS.GetClientRect(handle, clientRect);
   if (OS.IntersectRect(clientRect, sourceRect, clientRect)) {
     if (OS.IsWinCE) {
       OS.UpdateWindow(handle);
     } else {
       int flags = OS.RDW_UPDATENOW | OS.RDW_ALLCHILDREN;
       OS.RedrawWindow(handle, null, 0, flags);
     }
   }
   int deltaX = destX - x, deltaY = destY - y;
   if (findImageControl() != null) {
     if (OS.IsWinCE) {
       OS.InvalidateRect(handle, sourceRect, true);
     } else {
       int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE;
       if (all) flags |= OS.RDW_ALLCHILDREN;
       OS.RedrawWindow(handle, sourceRect, 0, flags);
     }
     OS.OffsetRect(sourceRect, deltaX, deltaY);
     if (OS.IsWinCE) {
       OS.InvalidateRect(handle, sourceRect, true);
     } else {
       int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE;
       if (all) flags |= OS.RDW_ALLCHILDREN;
       OS.RedrawWindow(handle, sourceRect, 0, flags);
     }
   } else {
     int flags = OS.SW_INVALIDATE | OS.SW_ERASE;
     /*
      * Feature in Windows.  If any child in the widget tree partially
      * intersects the scrolling rectangle, Windows moves the child
      * and copies the bits that intersect the scrolling rectangle but
      * does not redraw the child.
      *
      * Feature in Windows.  When any child in the widget tree does not
      * intersect the scrolling rectangle but the parent does intersect,
      * Windows does not move the child.  This is the documented (but
      * strange) Windows behavior.
      *
      * The fix is to not use SW_SCROLLCHILDREN and move the children
      * explicitly after scrolling.
      */
     //		if (all) flags |= OS.SW_SCROLLCHILDREN;
     OS.ScrollWindowEx(handle, deltaX, deltaY, sourceRect, null, 0, null, flags);
   }
   if (all) {
     Control[] children = _getChildren();
     for (int i = 0; i < children.length; i++) {
       Control child = children[i];
       Rectangle rect = child.getBoundsInPixels();
       if (Math.min(x + width, rect.x + rect.width) >= Math.max(x, rect.x)
           && Math.min(y + height, rect.y + rect.height) >= Math.max(y, rect.y)) {
         child.setLocationInPixels(rect.x + deltaX, rect.y + deltaY);
       }
     }
   }
   if (isFocus) caret.setFocus();
 }