C++ FV_View::getDocumentRangeOfCurrentSelection方法代码示例

void AP_UnixApp::cacheCurrentSelection(AV_View * pView)
{
    if (pView)
    {
		// remember a temporary copy of the extent of the current
		// selection in the given view.  this is intended for the
		// X11 middle mouse trick -- where we need to warp to a
		// new location and paste the current selection (not the
		// clipboard) and the act of warping clears the selection.
		
		// TODO if we ever support multiple view types, we'll have to
		// TODO change this.
		FV_View * pFVView = static_cast<FV_View *>(pView);
		pFVView->getDocumentRangeOfCurrentSelection(&m_cacheDocumentRangeOfSelection);

		m_cacheSelectionView = pView;
		m_cacheDeferClear = false;
    }
    else
    {
		if (m_cacheDeferClear)
		{
			m_cacheDeferClear = false;
			m_bHasSelection = false;
		}
		m_cacheSelectionView = NULL;
    }
}

/*! 
  get the current contents of the selection in the
  window last known to have a selection using one
  of the formats in the given list.

  \param formatList the list of acceptable formats
  \param ppData
  \param pLen a pointer to an integer representing the length
  \param pszFormatFound a pointer for the data to be returned in
  \return True if successful, false otherwise.
*/
bool AP_UnixApp::getCurrentSelection(const char** formatList,
									 void ** ppData, UT_uint32 * pLen,
									 const char **pszFormatFound)
{
    int j;
	
    *ppData = NULL;				// assume failure
    *pLen = 0;
    *pszFormatFound = NULL;
	
    if (!m_pViewSelection || !m_pFrameSelection || !m_bHasSelection)
		return false;		// can't do it, give up.

    PD_DocumentRange dr;

    if (m_cacheSelectionView == m_pViewSelection)
    {
		dr = m_cacheDocumentRangeOfSelection;
    }
    else
    {
		// TODO if we ever support multiple view types, we'll have to
		// TODO change this.
		FV_View * pFVView = static_cast<FV_View *>(m_pViewSelection);
	
		pFVView->getDocumentRangeOfCurrentSelection(&dr);
    }
	
    m_selectionByteBuf.truncate(0);

    for (j=0; (formatList[j]); j++)
    {
		if ( AP_UnixClipboard::isRichTextTag(formatList[j]) )
		{
			IE_Exp_RTF * pExpRtf = new IE_Exp_RTF(dr.m_pDoc);
			if (!pExpRtf)
				return false;		// give up on memory errors

			pExpRtf->copyToBuffer(&dr,&m_selectionByteBuf);
			DELETEP(pExpRtf);
			goto ReturnThisBuffer;
		}

		if ( AP_UnixClipboard::isHTMLTag(formatList[j]) )
		{
			IE_Exp_HTML * pExpHTML = new IE_Exp_HTML(dr.m_pDoc);
			if (!pExpHTML)
				return false;

			pExpHTML->set_HTML4 (!strcmp (formatList[j], "text/html"));
			pExpHTML->copyToBuffer(&dr,&m_selectionByteBuf);
			DELETEP(pExpHTML);
			goto ReturnThisBuffer;
		}

		if ( AP_UnixClipboard::isImageTag(formatList[j]) )
		{
			// TODO: we have to make a good way to tell if the current selection is just an image
			FV_View * pView = NULL;
			if(getLastFocussedFrame())
				pView = static_cast<FV_View*>(getLastFocussedFrame()->getCurrentView());

			if (pView && !pView->isSelectionEmpty())
				{
					// don't own, don't g_free
					const UT_ByteBuf * png = 0;
	  
					pView->saveSelectedImage (&png);
					if (png && png->getLength() > 0)
						{
							m_selectionByteBuf.ins (0, png->getPointer (0), png->getLength ());
							goto ReturnThisBuffer;
						}
				}
		}
			
		if ( AP_UnixClipboard::isTextTag(formatList[j]) )
		{
			IE_Exp_Text * pExpText = new IE_Exp_Text(dr.m_pDoc, "UTF-8");
			if (!pExpText)
				return false;

			pExpText->copyToBuffer(&dr,&m_selectionByteBuf);
			DELETEP(pExpText);
			goto ReturnThisBuffer;
		}

		// TODO add other formats as necessary
    }
//.........这里部分代码省略.........