Exemplo n.º 1
0
 /**
  * Returns a point describing the receiver's size.
  *
  * @return the receiver's size
  * @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 Point getSize() {
   checkWidget();
   if (image != null) {
     Rectangle rect = image.getBounds();
     return new Point(rect.width, rect.height);
   }
   return new Point(width, height);
 }
Exemplo n.º 2
0
 /**
  * Returns a rectangle describing the receiver's size and location relative to its parent (or its
  * display if its parent is null).
  *
  * @return the receiver's bounding rectangle
  * @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 Rectangle getBounds() {
   checkWidget();
   if (image != null) {
     Rectangle rect = image.getBounds();
     return new Rectangle(x, y, rect.width, rect.height);
   }
   return new Rectangle(x, y, width, height);
 }
Exemplo n.º 3
0
 /**
  * Sets the receiver's image at a column.
  *
  * @param index the column index
  * @param image the new image
  * @exception IllegalArgumentException
  *     <ul>
  *       <li>ERROR_INVALID_ARGUMENT - if the image 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 setImage(int index, Image image) {
   checkWidget();
   if (image != null && image.isDisposed()) {
     error(SWT.ERROR_INVALID_ARGUMENT);
   }
   if (image != null && image.type == SWT.ICON) {
     if (image.equals(_getImage(index))) return;
   }
   int count = Math.max(1, parent.getColumnCount());
   if (0 > index || index > count - 1) return;
   int /*long*/ pixbuf = 0;
   if (image != null) {
     ImageList imageList = parent.imageList;
     if (imageList == null) imageList = parent.imageList = new ImageList();
     int imageIndex = imageList.indexOf(image);
     if (imageIndex == -1) imageIndex = imageList.add(image);
     pixbuf = imageList.getPixbuf(imageIndex);
   }
   int modelIndex =
       parent.columnCount == 0 ? Table.FIRST_COLUMN : parent.columns[index].modelIndex;
   OS.gtk_list_store_set(parent.modelHandle, handle, modelIndex + Table.CELL_PIXBUF, pixbuf, -1);
   /*
    * Bug in GTK.  When using fixed-height-mode,
    * row changes do not cause the row to be repainted.  The fix is to
    * invalidate the row when it is cleared.
    */
   if ((parent.style & SWT.VIRTUAL) != 0) {
     if (OS.GTK_VERSION >= OS.VERSION(2, 3, 2) && OS.GTK_VERSION < OS.VERSION(2, 6, 3)) {
       redraw();
     }
   }
   /*
    * Bug in GTK.  When in fixed height mode, GTK does not recalculate the cell renderer width
    * when the image is changed in the model.  The fix is to force it to recalculate the width if
    * more space is required.
    */
   if ((parent.style & SWT.VIRTUAL) != 0 && parent.currentItem == null) {
     if (OS.GTK_VERSION >= OS.VERSION(2, 3, 2)) {
       if (image != null) {
         int /*long*/ parentHandle = parent.handle;
         int /*long*/ column = OS.gtk_tree_view_get_column(parentHandle, index);
         int[] w = new int[1];
         int /*long*/ pixbufRenderer = parent.getPixbufRenderer(column);
         OS.gtk_tree_view_column_cell_get_position(column, pixbufRenderer, null, w);
         if (w[0] < image.getBounds().width) {
           /*
            * There is no direct way to clear the cell renderer width so we
            * are relying on the fact that it is done as part of modifying
            * the style.
            */
           int /*long*/ style = OS.gtk_widget_get_modifier_style(parentHandle);
           parent.modifyStyle(parentHandle, style);
         }
       }
     }
   }
   cached = true;
 }
Exemplo n.º 4
0
 void resize(int width, int height) {
   if (image != null) {
     Rectangle rect = image.getBounds();
     width = rect.width;
     height = rect.height;
   }
   if (width == 0) width = 1;
   OS.FrameworkElement_Width(handle, width);
   OS.FrameworkElement_Height(handle, height);
 }
Exemplo n.º 5
0
  /** Compute the minimum size. */
  private Point getTotalSize(Image image, String text) {
    Point size = new Point(0, 0);

    if (image != null) {
      Rectangle r = image.getBounds();
      size.x += r.width;
      size.y += r.height;
    }

    GC gc = new GC(this);
    if (text != null && text.length() > 0) {
      Point e = gc.textExtent(text, DRAW_FLAGS);
      size.x += e.x;
      size.y = Math.max(size.y, e.y);
      if (image != null) size.x += GAP;
    } else {
      size.y = Math.max(size.y, gc.getFontMetrics().getHeight());
    }
    gc.dispose();

    return size;
  }
Exemplo n.º 6
0
 public static void main(String[] args) {
   final Display display = new Display();
   final Image image = new Image(display, 16, 16);
   GC gc = new GC(image);
   gc.setBackground(display.getSystemColor(SWT.COLOR_RED));
   gc.fillRectangle(image.getBounds());
   gc.dispose();
   final Shell shell = new Shell(display);
   shell.setText("Lazy Table");
   shell.setLayout(new FillLayout());
   final Table table = new Table(shell, SWT.BORDER | SWT.MULTI);
   table.setSize(200, 200);
   Thread thread =
       new Thread() {
         @Override
         public void run() {
           for (int i = 0; i < 20000; i++) {
             if (table.isDisposed()) return;
             final int[] index = new int[] {i};
             display.syncExec(
                 () -> {
                   if (table.isDisposed()) return;
                   TableItem item = new TableItem(table, SWT.NONE);
                   item.setText("Table Item " + index[0]);
                   item.setImage(image);
                 });
           }
         }
       };
   thread.start();
   shell.setSize(200, 200);
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch()) display.sleep();
   }
   image.dispose();
   display.dispose();
 }
Exemplo n.º 7
0
  int XmNexposureCallback(int w, int client_data, int call_data) {
    if ((style & SWT.SEPARATOR) != 0) return 0;
    int xDisplay = OS.XtDisplay(handle);
    if (xDisplay == 0) return 0;
    int xWindow = OS.XtWindow(handle);
    if (xWindow == 0) return 0;
    int[] argList = {
      OS.XmNcolormap, 0,
      OS.XmNwidth, 0,
      OS.XmNheight, 0,
    };
    OS.XtGetValues(handle, argList, argList.length / 2);
    int width = argList[3], height = argList[5];

    Image currentImage = image;
    boolean enabled = getEnabled();

    if ((parent.style & SWT.FLAT) != 0) {
      boolean hasCursor = hasCursor();

      /* Set the shadow thickness */
      int thickness = 0;
      if (set || (hasCursor && enabled)) {
        thickness = Math.min(2, display.buttonShadowThickness);
      }
      argList = new int[] {OS.XmNshadowThickness, thickness};
      OS.XtSetValues(handle, argList, argList.length / 2);

      /* Determine if hot image should be used */
      if (enabled && hasCursor && hotImage != null) {
        currentImage = hotImage;
      }
    }

    GCData data = new GCData();
    data.device = display;
    data.display = xDisplay;
    data.drawable = xWindow;
    data.font = parent.font;
    data.colormap = argList[1];
    int xGC = OS.XCreateGC(xDisplay, xWindow, 0, null);
    if (xGC == 0) SWT.error(SWT.ERROR_NO_HANDLES);
    GC gc = GC.motif_new(xGC, data);

    XmAnyCallbackStruct cb = new XmAnyCallbackStruct();
    OS.memmove(cb, call_data, XmAnyCallbackStruct.sizeof);
    if (cb.event != 0) {
      XExposeEvent xEvent = new XExposeEvent();
      OS.memmove(xEvent, cb.event, XExposeEvent.sizeof);
      Rectangle rect = new Rectangle(xEvent.x, xEvent.y, xEvent.width, xEvent.height);
      gc.setClipping(rect);
    }

    if (!enabled) {
      currentImage = disabledImage;
      if (currentImage == null && image != null) {
        currentImage = new Image(display, image, SWT.IMAGE_DISABLE);
      }
      Color disabledColor = display.getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW);
      gc.setForeground(disabledColor);
    } else {
      gc.setForeground(parent.getForeground());
    }
    gc.setBackground(parent.getBackground());

    int textX = 0, textY = 0, textWidth = 0, textHeight = 0;
    if (text.length() != 0) {
      int flags = SWT.DRAW_DELIMITER | SWT.DRAW_TAB | SWT.DRAW_MNEMONIC;
      Point textExtent = gc.textExtent(text, flags);
      textWidth = textExtent.x;
      textHeight = textExtent.y;
    }
    int imageX = 0, imageY = 0, imageWidth = 0, imageHeight = 0;
    if (currentImage != null) {
      Rectangle imageBounds = currentImage.getBounds();
      imageWidth = imageBounds.width;
      imageHeight = imageBounds.height;
    }

    int spacing = 0;
    if (textWidth != 0 && imageWidth != 0) spacing = 2;
    if ((parent.style & SWT.RIGHT) != 0) {
      imageX = (width - imageWidth - textWidth - spacing) / 2;
      imageY = (height - imageHeight) / 2;
      textX = spacing + imageX + imageWidth;
      textY = (height - textHeight) / 2;
    } else {
      imageX = (width - imageWidth) / 2;
      imageY = (height - imageHeight - textHeight - spacing) / 2;
      textX = (width - textWidth) / 2;
      textY = spacing + imageY + imageHeight;
    }

    if ((style & SWT.DROP_DOWN) != 0) {
      textX -= 6;
      imageX -= 6;
    }
    if (textWidth > 0) {
      int flags = SWT.DRAW_DELIMITER | SWT.DRAW_TAB | SWT.DRAW_MNEMONIC | SWT.DRAW_TRANSPARENT;
      gc.drawText(text, textX, textY, flags);
    }
    if (imageWidth > 0) gc.drawImage(currentImage, imageX, imageY);
    if ((style & SWT.DROP_DOWN) != 0) {
      int startX = width - 12, startY = (height - 2) / 2;
      int[] arrow = {startX, startY, startX + 3, startY + 3, startX + 6, startY};
      gc.setBackground(parent.getForeground());
      gc.fillPolygon(arrow);
      gc.drawPolygon(arrow);
    }
    gc.dispose();
    OS.XFreeGC(xDisplay, xGC);

    if (!enabled && disabledImage == null) {
      if (currentImage != null) currentImage.dispose();
    }
    return 0;
  }
Exemplo n.º 8
0
 void paint(Event event) {
   if (row == null) return;
   int columnIndex = column == null ? 0 : table.indexOf(column);
   GC gc = event.gc;
   gc.setBackground(getBackground());
   gc.setForeground(getForeground());
   gc.fillRectangle(event.x, event.y, event.width, event.height);
   int x = 0;
   Point size = getSize();
   Image image = row.getImage(columnIndex);
   if (image != null) {
     Rectangle imageSize = image.getBounds();
     int imageY = (size.y - imageSize.height) / 2;
     gc.drawImage(image, x, imageY);
     x += imageSize.width;
   }
   String text = row.getText(columnIndex);
   if (text.length() > 0) {
     Rectangle bounds = row.getBounds(columnIndex);
     Point extent = gc.stringExtent(text);
     // Temporary code - need a better way to determine table trim
     String platform = SWT.getPlatform();
     if ("win32".equals(platform)) { // $NON-NLS-1$
       if (table.getColumnCount() == 0 || columnIndex == 0) {
         x += 2;
       } else {
         int alignmnent = column.getAlignment();
         switch (alignmnent) {
           case SWT.LEFT:
             x += 6;
             break;
           case SWT.RIGHT:
             x = bounds.width - extent.x - 6;
             break;
           case SWT.CENTER:
             x += (bounds.width - x - extent.x) / 2;
             break;
         }
       }
     } else {
       if (table.getColumnCount() == 0) {
         x += 5;
       } else {
         int alignmnent = column.getAlignment();
         switch (alignmnent) {
           case SWT.LEFT:
             x += 5;
             break;
           case SWT.RIGHT:
             x = bounds.width - extent.x - 2;
             break;
           case SWT.CENTER:
             x += (bounds.width - x - extent.x) / 2 + 2;
             break;
         }
       }
     }
     int textY = (size.y - extent.y) / 2;
     gc.drawString(text, x, textY);
   }
   if (isFocusControl()) {
     Display display = getDisplay();
     gc.setBackground(display.getSystemColor(SWT.COLOR_BLACK));
     gc.setForeground(display.getSystemColor(SWT.COLOR_WHITE));
     gc.drawFocus(0, 0, size.x, size.y);
   }
 }
Exemplo n.º 9
0
  private void drag(Event dragEvent) {
    DNDEvent event = new DNDEvent();
    event.widget = this;
    event.x = dragEvent.x;
    event.y = dragEvent.y;
    event.time = OS.GetMessageTime();
    event.doit = true;
    notifyListeners(DND.DragStart, event);
    if (!event.doit || transferAgents == null || transferAgents.length == 0) return;

    int[] pdwEffect = new int[1];
    int operations = opToOs(getStyle());
    Display display = control.getDisplay();
    String key = "org.eclipse.swt.internal.win32.runMessagesInIdle"; // $NON-NLS-1$
    Object oldValue = display.getData(key);
    display.setData(key, Boolean.TRUE);
    ImageList imagelist = null;
    Image image = event.image;
    hwndDrag = 0;
    topControl = null;
    if (image != null) {
      imagelist = new ImageList(SWT.NONE);
      imagelist.add(image);
      topControl = control.getShell();
      /*
       * Bug in Windows. The image is inverted if the shell is RIGHT_TO_LEFT.
       * The fix is to create a transparent window that covers the shell client
       * area and use it during the drag to prevent the image from being inverted.
       * On XP if the shell is RTL, the image is not displayed.
       */
      int offsetX = event.offsetX;
      hwndDrag = topControl.handle;
      if ((topControl.getStyle() & SWT.RIGHT_TO_LEFT) != 0) {
        offsetX = image.getBounds().width - offsetX;
        RECT rect = new RECT();
        OS.GetClientRect(topControl.handle, rect);
        hwndDrag =
            OS.CreateWindowEx(
                OS.WS_EX_TRANSPARENT | OS.WS_EX_NOINHERITLAYOUT,
                WindowClass,
                null,
                OS.WS_CHILD | OS.WS_CLIPSIBLINGS,
                0,
                0,
                rect.right - rect.left,
                rect.bottom - rect.top,
                topControl.handle,
                0,
                OS.GetModuleHandle(null),
                null);
        OS.ShowWindow(hwndDrag, OS.SW_SHOW);
      }
      OS.ImageList_BeginDrag(imagelist.getHandle(), 0, offsetX, event.offsetY);
      /*
       * Feature in Windows. When ImageList_DragEnter() is called,
       * it takes a snapshot of the screen  If a drag is started
       * when another window is in front, then the snapshot will
       * contain part of the other window, causing pixel corruption.
       * The fix is to force all paints to be delivered before
       * calling ImageList_DragEnter().
       */
      if (OS.IsWinCE) {
        OS.UpdateWindow(topControl.handle);
      } else {
        int flags = OS.RDW_UPDATENOW | OS.RDW_ALLCHILDREN;
        OS.RedrawWindow(topControl.handle, null, 0, flags);
      }
      POINT pt = new POINT();
      pt.x = dragEvent.x;
      pt.y = dragEvent.y;
      OS.MapWindowPoints(control.handle, 0, pt, 1);
      RECT rect = new RECT();
      OS.GetWindowRect(hwndDrag, rect);
      OS.ImageList_DragEnter(hwndDrag, pt.x - rect.left, pt.y - rect.top);
    }
    int result = COM.DRAGDROP_S_CANCEL;
    try {
      result =
          COM.DoDragDrop(iDataObject.getAddress(), iDropSource.getAddress(), operations, pdwEffect);
    } finally {
      // ensure that we don't leave transparent window around
      if (hwndDrag != 0) {
        OS.ImageList_DragLeave(hwndDrag);
        OS.ImageList_EndDrag();
        imagelist.dispose();
        if (hwndDrag != topControl.handle) OS.DestroyWindow(hwndDrag);
        hwndDrag = 0;
        topControl = null;
      }
      display.setData(key, oldValue);
    }
    int operation = osToOp(pdwEffect[0]);
    if (dataEffect == DND.DROP_MOVE) {
      operation =
          (operation == DND.DROP_NONE || operation == DND.DROP_COPY)
              ? DND.DROP_TARGET_MOVE
              : DND.DROP_MOVE;
    } else {
      if (dataEffect != DND.DROP_NONE) {
        operation = dataEffect;
      }
    }
    event = new DNDEvent();
    event.widget = this;
    event.time = OS.GetMessageTime();
    event.doit = (result == COM.DRAGDROP_S_DROP);
    event.detail = operation;
    notifyListeners(DND.DragEnd, event);
    dataEffect = DND.DROP_NONE;
  }
Exemplo n.º 10
0
  void onPaint(PaintEvent event) {
    Rectangle rect = getClientArea();
    if (rect.width == 0 || rect.height == 0) return;

    boolean shortenText = false;
    String t = text;
    Image img = image;
    int availableWidth = Math.max(0, rect.width - (leftMargin + rightMargin));
    Point extent = getTotalSize(img, t);
    if (extent.x > availableWidth) {
      img = null;
      extent = getTotalSize(img, t);
      if (extent.x > availableWidth) {
        shortenText = true;
      }
    }

    GC gc = event.gc;
    String[] lines = text == null ? null : splitString(text);

    // shorten the text
    if (shortenText) {
      extent.x = 0;
      for (int i = 0; i < lines.length; i++) {
        Point e = gc.textExtent(lines[i], DRAW_FLAGS);
        if (e.x > availableWidth) {
          lines[i] = shortenText(gc, lines[i], availableWidth);
          extent.x = Math.max(extent.x, getTotalSize(null, lines[i]).x);
        } else {
          extent.x = Math.max(extent.x, e.x);
        }
      }
      if (appToolTipText == null) {
        super.setToolTipText(text);
      }
    } else {
      super.setToolTipText(appToolTipText);
    }

    // determine horizontal position
    int x = rect.x + leftMargin;
    if (align == SWT.CENTER) {
      x = (rect.width - extent.x) / 2;
    }
    if (align == SWT.RIGHT) {
      x = rect.width - rightMargin - extent.x;
    }

    // draw a background image behind the text
    try {
      if (backgroundImage != null) {
        // draw a background image behind the text
        Rectangle imageRect = backgroundImage.getBounds();
        // tile image to fill space
        gc.setBackground(getBackground());
        gc.fillRectangle(rect);
        int xPos = 0;
        while (xPos < rect.width) {
          int yPos = 0;
          while (yPos < rect.height) {
            gc.drawImage(backgroundImage, xPos, yPos);
            yPos += imageRect.height;
          }
          xPos += imageRect.width;
        }
      } else if (gradientColors != null) {
        // draw a gradient behind the text
        final Color oldBackground = gc.getBackground();
        if (gradientColors.length == 1) {
          if (gradientColors[0] != null) gc.setBackground(gradientColors[0]);
          gc.fillRectangle(0, 0, rect.width, rect.height);
        } else {
          final Color oldForeground = gc.getForeground();
          Color lastColor = gradientColors[0];
          if (lastColor == null) lastColor = oldBackground;
          int pos = 0;
          for (int i = 0; i < gradientPercents.length; ++i) {
            gc.setForeground(lastColor);
            lastColor = gradientColors[i + 1];
            if (lastColor == null) lastColor = oldBackground;
            gc.setBackground(lastColor);
            if (gradientVertical) {
              final int gradientHeight = (gradientPercents[i] * rect.height / 100) - pos;
              gc.fillGradientRectangle(0, pos, rect.width, gradientHeight, true);
              pos += gradientHeight;
            } else {
              final int gradientWidth = (gradientPercents[i] * rect.width / 100) - pos;
              gc.fillGradientRectangle(pos, 0, gradientWidth, rect.height, false);
              pos += gradientWidth;
            }
          }
          if (gradientVertical && pos < rect.height) {
            gc.setBackground(getBackground());
            gc.fillRectangle(0, pos, rect.width, rect.height - pos);
          }
          if (!gradientVertical && pos < rect.width) {
            gc.setBackground(getBackground());
            gc.fillRectangle(pos, 0, rect.width - pos, rect.height);
          }
          gc.setForeground(oldForeground);
        }
        gc.setBackground(oldBackground);
      } else {
        if (background != null || (getStyle() & SWT.DOUBLE_BUFFERED) == 0) {
          gc.setBackground(getBackground());
          gc.fillRectangle(rect);
        }
      }
    } catch (SWTException e) {
      if ((getStyle() & SWT.DOUBLE_BUFFERED) == 0) {
        gc.setBackground(getBackground());
        gc.fillRectangle(rect);
      }
    }

    // draw border
    int style = getStyle();
    if ((style & SWT.SHADOW_IN) != 0 || (style & SWT.SHADOW_OUT) != 0) {
      paintBorder(gc, rect);
    }

    /*
     * Compute text height and image height. If image height is more than
     * the text height, draw image starting from top margin. Else draw text
     * starting from top margin.
     */
    Rectangle imageRect = null;
    int lineHeight = 0, textHeight = 0, imageHeight = 0;

    if (img != null) {
      imageRect = img.getBounds();
      imageHeight = imageRect.height;
    }
    if (lines != null) {
      lineHeight = gc.getFontMetrics().getHeight();
      textHeight = lines.length * lineHeight;
    }

    int imageY = 0, midPoint = 0, lineY = 0;
    if (imageHeight > textHeight) {
      if (topMargin == DEFAULT_MARGIN && bottomMargin == DEFAULT_MARGIN)
        imageY = rect.y + (rect.height - imageHeight) / 2;
      else imageY = topMargin;
      midPoint = imageY + imageHeight / 2;
      lineY = midPoint - textHeight / 2;
    } else {
      if (topMargin == DEFAULT_MARGIN && bottomMargin == DEFAULT_MARGIN)
        lineY = rect.y + (rect.height - textHeight) / 2;
      else lineY = topMargin;
      midPoint = lineY + textHeight / 2;
      imageY = midPoint - imageHeight / 2;
    }

    // draw the image
    if (img != null) {
      gc.drawImage(
          img, 0, 0, imageRect.width, imageHeight, x, imageY, imageRect.width, imageHeight);
      x += imageRect.width + GAP;
      extent.x -= imageRect.width + GAP;
    }

    // draw the text
    if (lines != null) {
      gc.setForeground(getForeground());
      for (int i = 0; i < lines.length; i++) {
        int lineX = x;
        if (lines.length > 1) {
          if (align == SWT.CENTER) {
            int lineWidth = gc.textExtent(lines[i], DRAW_FLAGS).x;
            lineX = x + Math.max(0, (extent.x - lineWidth) / 2);
          }
          if (align == SWT.RIGHT) {
            int lineWidth = gc.textExtent(lines[i], DRAW_FLAGS).x;
            lineX = Math.max(x, rect.x + rect.width - rightMargin - lineWidth);
          }
        }
        gc.drawText(lines[i], lineX, lineY, DRAW_FLAGS);
        lineY += lineHeight;
      }
    }
  }