Image getDragSourceImage(DragSourceEvent event) {
    if (dragSourceImage != null) dragSourceImage.dispose();
    dragSourceImage = null;

    Table table = (Table) control;
    if (OS.GTK_VERSION < OS.VERSION(2, 2, 0)) return null;
    // TEMPORARY CODE
    if (table.isListening(SWT.EraseItem) || table.isListening(SWT.PaintItem)) return null;
    /*
     * Bug in GTK.  gtk_tree_selection_get_selected_rows() segmentation faults
     * in versions smaller than 2.2.4 if the model is NULL.  The fix is
     * to give a valid pointer instead.
     */
    long /*int*/ handle = table.handle;
    long /*int*/ selection = OS.gtk_tree_view_get_selection(handle);
    long /*int*/[] model = OS.GTK_VERSION < OS.VERSION(2, 2, 4) ? new long /*int*/[1] : null;
    long /*int*/ list = OS.gtk_tree_selection_get_selected_rows(selection, model);
    if (list == 0) return null;
    int count = Math.min(10, OS.g_list_length(list));

    Display display = table.getDisplay();
    if (count == 1) {
      long /*int*/ path = OS.g_list_nth_data(list, 0);
      long /*int*/ pixmap = OS.gtk_tree_view_create_row_drag_icon(handle, path);
      dragSourceImage = Image.gtk_new(display, SWT.ICON, pixmap, 0);
    } else {
      int width = 0, height = 0;
      int[] w = new int[1], h = new int[1];
      int[] yy = new int[count], hh = new int[count];
      long /*int*/[] pixmaps = new long /*int*/[count];
      GdkRectangle rect = new GdkRectangle();
      for (int i = 0; i < count; i++) {
        long /*int*/ path = OS.g_list_nth_data(list, i);
        OS.gtk_tree_view_get_cell_area(handle, path, 0, rect);
        pixmaps[i] = OS.gtk_tree_view_create_row_drag_icon(handle, path);
        OS.gdk_drawable_get_size(pixmaps[i], w, h);
        width = Math.max(width, w[0]);
        height = rect.y + h[0] - yy[0];
        yy[i] = rect.y;
        hh[i] = h[0];
      }
      long /*int*/ source = OS.gdk_pixmap_new(OS.GDK_ROOT_PARENT(), width, height, -1);
      long /*int*/ gcSource = OS.gdk_gc_new(source);
      long /*int*/ mask = OS.gdk_pixmap_new(OS.GDK_ROOT_PARENT(), width, height, 1);
      long /*int*/ gcMask = OS.gdk_gc_new(mask);
      GdkColor color = new GdkColor();
      color.pixel = 0;
      OS.gdk_gc_set_foreground(gcMask, color);
      OS.gdk_draw_rectangle(mask, gcMask, 1, 0, 0, width, height);
      color.pixel = 1;
      OS.gdk_gc_set_foreground(gcMask, color);
      for (int i = 0; i < count; i++) {
        OS.gdk_draw_drawable(source, gcSource, pixmaps[i], 0, 0, 0, yy[i] - yy[0], -1, -1);
        OS.gdk_draw_rectangle(mask, gcMask, 1, 0, yy[i] - yy[0], width, hh[i]);
        OS.g_object_unref(pixmaps[i]);
      }
      OS.g_object_unref(gcSource);
      OS.g_object_unref(gcMask);
      dragSourceImage = Image.gtk_new(display, SWT.ICON, source, mask);
    }
    OS.g_list_free(list);

    return dragSourceImage;
  }
Exemple #2
0
 int /*long*/ gtk_preedit_changed(int /*long*/ imcontext) {
   if (!isInlineEnabled()) return 0;
   ranges = null;
   styles = null;
   commitCount = 0;
   int /*long*/ imHandle = imHandle();
   int /*long*/[] preeditString = new int /*long*/[1];
   int /*long*/[] pangoAttrs = new int /*long*/[1];
   int[] cursorPos = new int[1];
   OS.gtk_im_context_get_preedit_string(imHandle, preeditString, pangoAttrs, cursorPos);
   caretOffset = cursorPos[0];
   char[] chars = null;
   if (preeditString[0] != 0) {
     int length = OS.strlen(preeditString[0]);
     byte[] buffer = new byte[length];
     OS.memmove(buffer, preeditString[0], length);
     chars = Converter.mbcsToWcs(null, buffer);
     if (pangoAttrs[0] != 0) {
       int count = 0;
       int /*long*/ iterator = OS.pango_attr_list_get_iterator(pangoAttrs[0]);
       while (OS.pango_attr_iterator_next(iterator)) count++;
       OS.pango_attr_iterator_destroy(iterator);
       ranges = new int[count * 2];
       styles = new TextStyle[count];
       iterator = OS.pango_attr_list_get_iterator(pangoAttrs[0]);
       PangoAttrColor attrColor = new PangoAttrColor();
       PangoAttrInt attrInt = new PangoAttrInt();
       int[] start = new int[1];
       int[] end = new int[1];
       for (int i = 0; i < count; i++) {
         OS.pango_attr_iterator_range(iterator, start, end);
         ranges[i * 2] =
             (int) /*64*/
                 OS.g_utf16_pointer_to_offset(preeditString[0], preeditString[0] + start[0]);
         ranges[i * 2 + 1] =
             (int) /*64*/ OS.g_utf16_pointer_to_offset(preeditString[0], preeditString[0] + end[0])
                 - 1;
         styles[i] = new TextStyle(null, null, null);
         int /*long*/ attr = OS.pango_attr_iterator_get(iterator, OS.PANGO_ATTR_FOREGROUND);
         if (attr != 0) {
           OS.memmove(attrColor, attr, PangoAttrColor.sizeof);
           GdkColor color = new GdkColor();
           color.red = attrColor.color_red;
           color.green = attrColor.color_green;
           color.blue = attrColor.color_blue;
           styles[i].foreground = Color.gtk_new(display, color);
         }
         attr = OS.pango_attr_iterator_get(iterator, OS.PANGO_ATTR_BACKGROUND);
         if (attr != 0) {
           OS.memmove(attrColor, attr, PangoAttrColor.sizeof);
           GdkColor color = new GdkColor();
           color.red = attrColor.color_red;
           color.green = attrColor.color_green;
           color.blue = attrColor.color_blue;
           styles[i].background = Color.gtk_new(display, color);
         }
         attr = OS.pango_attr_iterator_get(iterator, OS.PANGO_ATTR_UNDERLINE);
         if (attr != 0) {
           OS.memmove(attrInt, attr, PangoAttrInt.sizeof);
           styles[i].underline = attrInt.value != OS.PANGO_UNDERLINE_NONE;
           ;
           styles[i].underlineStyle = SWT.UNDERLINE_SINGLE;
           switch (attrInt.value) {
             case OS.PANGO_UNDERLINE_DOUBLE:
               styles[i].underlineStyle = SWT.UNDERLINE_DOUBLE;
               break;
             case OS.PANGO_UNDERLINE_ERROR:
               styles[i].underlineStyle = SWT.UNDERLINE_ERROR;
               break;
           }
           if (styles[i].underline) {
             attr = OS.pango_attr_iterator_get(iterator, OS.PANGO_ATTR_UNDERLINE_COLOR);
             if (attr != 0) {
               OS.memmove(attrColor, attr, PangoAttrColor.sizeof);
               GdkColor color = new GdkColor();
               color.red = attrColor.color_red;
               color.green = attrColor.color_green;
               color.blue = attrColor.color_blue;
               styles[i].underlineColor = Color.gtk_new(display, color);
             }
           }
         }
         OS.pango_attr_iterator_next(iterator);
       }
       OS.pango_attr_iterator_destroy(iterator);
       OS.pango_attr_list_unref(pangoAttrs[0]);
     }
     OS.g_free(preeditString[0]);
   }
   if (chars != null) {
     if (text.length() == 0) {
       /*
        * Bug in GTK. In Solaris, the IME sends multiple
        * preedit_changed signals with an empty text.
        * This behavior is not correct for SWT and can
        * cause the editor to replace its current selection
        * with an empty string. The fix is to ignore any
        * preedit_changed signals with an empty text when
        * the preedit buffer is already empty.
        */
       if (chars.length == 0) return 0;
       startOffset = -1;
     }
     int end = startOffset + text.length();
     if (startOffset == -1) {
       Event event = new Event();
       event.detail = SWT.COMPOSITION_SELECTION;
       sendEvent(SWT.ImeComposition, event);
       startOffset = event.start;
       end = event.end;
     }
     inComposition = true;
     Event event = new Event();
     event.detail = SWT.COMPOSITION_CHANGED;
     event.start = startOffset;
     event.end = end;
     event.text = text = chars != null ? new String(chars) : "";
     sendEvent(SWT.ImeComposition, event);
   }
   return 1;
 }