C++ Fl_Text_Buffer::line_end方法代码示例

void ModelViewController::Print()
{
	if( !serial->isConnected() )
	{
		fl_alert ("Not connected to printer.\nCannot start printing");
		return;
	}

	gui->ContinueButton->value(0);
	gui->ContinueButton->activate();
	gui->ContinueButton->label("Pause");
	gui->PrintButton->value(1);
	gui->PrintButton->label("Print");
	gui->PrintButton->deactivate();

	// Snack one line at a time from the Gcode view, and buffer it.
/*
	if(gui->PrintButton->value() == 0)	// Turned off print, cancel buffer and flush
	{
		m_bPrinting = false;
		return;
	}
*/
	serial->Clear();	// resets line nr and buffer
	serial->m_bPrinting = false;
	serial->SetDebugMask();
	serial->SetLineNr(-1);	// Reset LineNr Count
	gui->CommunationLog->clear();
	Fl_Text_Buffer* buffer = gui->GCodeResult->buffer();
	char* pText = buffer->text();
	uint length = buffer->length();

	uint pos = 2;
	while(pos < length)
		{
		char* line = buffer->line_text(pos);
		if(line[0] == ';')
			{
			pos = buffer->line_end(pos)+1;	// skip newline
			continue;
			}
		serial->AddToBuffer(line);
		pos = buffer->line_end(pos)+1;	// find end of line
		}

	gui->ProgressBar->maximum(serial->Length());
	gui->ProgressBar->label("Printing");
	gui->ProgressBar->value(0);
	free(pText);
	serial->StartPrint();
}

void text_editor::cb_save(Fl_Widget *widget, void *v)
{
	extern std::list<std::string> whitelist;

	text_editor *editor = (text_editor*)v;
	Fl_Text_Buffer *buffer = editor->buffer;
	
	int buff_length = buffer->length();
	int buff_lines = buffer->count_lines(0, buff_length);
	
	if (buff_lines > 0)
	{
		int pos = 0;
		whitelist.clear();
		
		for (int i = 0; i <= buff_lines; i++)
		{
			char* line_text = buffer->line_text(pos);
			std::string line(line_text);
			free(line_text);

			if(line.length() > 3)
				whitelist.push_back(line);

			pos = min(buffer->line_end(pos) + 1, buff_length);
		}
	}

	editor->hide();
}

void CFLTKEditor::UnIndent()
{
	bool bChangedBuffer = false;
	int iSelStart = 0, iSelEnd = 0, iCurPos = 0, iTabSize, i;
	char *pcLine;
	Fl_Text_Buffer *pBuffer = GetTextBuffer();

	pBuffer->selection_position(&iSelStart, &iSelEnd);
	if (iSelEnd > iSelStart)
	{
		iCurPos = pBuffer->line_start(iSelStart);
		iTabSize = pBuffer->tab_distance();

		while (pBuffer->line_end(iCurPos) < iSelEnd)
		{
			pcLine = pBuffer->line_text(iCurPos);
			if (pcLine[0] == '\t')
			{
				bChangedBuffer = true;
				pBuffer->remove(iCurPos, iCurPos+1);
				--iSelEnd;
			}
			else if (pcLine[0] == ' ')
			{
				for (i = 1; i < iTabSize; i++)
				{
					if (pcLine[i] != ' ')
						break;
				}

				if (i == iTabSize) // same number of spaces as a tab
				{
					bChangedBuffer = true;
					pBuffer->remove(iCurPos, iCurPos + iTabSize);
					iSelEnd -= iTabSize;
				}
			}
			iCurPos = pBuffer->skip_lines(iCurPos, 1);
			free(pcLine);
		}

		if (bChangedBuffer)
			pBuffer->select(pBuffer->line_start(iSelStart), iSelEnd);
	}
}

void CFLTKEditor::Indent()
{
	bool bChangedBuffer = false;
	int iSelStart = 0, iSelEnd = 0, iCurPos = 0;
	Fl_Text_Buffer *pcBuffer = GetTextBuffer();

	pcBuffer->selection_position(&iSelStart, &iSelEnd);
	if (iSelEnd <= iSelStart)
		return;

	iCurPos = pcBuffer->line_start(iSelStart);
	while (pcBuffer->line_end(iCurPos) < iSelEnd)
	{
		bChangedBuffer = true;
		pcBuffer->insert(iCurPos, "\t");
		iCurPos = pcBuffer->skip_lines(iCurPos, 1);
		++iSelEnd;
	}

	if (bChangedBuffer)
		pcBuffer->select(pcBuffer->line_start(iSelStart), iSelEnd);
}

static void
style_update(int		pos,			// I - Position of update
			 int		nInserted,		// I - Number of inserted chars
			 int		nDeleted,		// I - Number of deleted chars
			 int		/*nRestyled*/,	// I - Number of restyled chars
			 const char * /*deletedText*/,// I - Text that was deleted
			 void		*cbArg) {		// I - Callback data
  int	start,							// Start of text
		end;							// End of text
  char	last,							// Last style on line
		*style,							// Style data
		*text;							// Text data

  SchemeEditor *editor = (SchemeEditor*)cbArg;
  Fl_Text_Buffer *textbuf = editor->buffer();
  Fl_Text_Buffer *stylebuf = editor->style_buffer();

  // If this is just a selection change, just unselect the style buffer...
  if (nInserted == 0 && nDeleted == 0) {
	stylebuf->unselect();
	return;
  }

  // Track changes in the text buffer...
  if (nInserted > 0) {
	// Insert characters into the style buffer...
	style = new char[nInserted + 1];
	memset(style, 'A', nInserted);
	style[nInserted] = '\0';

	stylebuf->replace(pos, pos + nDeleted, style);
	delete[] style;
  } else {
	// Just delete characters in the style buffer...
	stylebuf->remove(pos, pos + nDeleted);
  }

  // Select the area that was just updated to avoid unnecessary
  // callbacks...
  stylebuf->select(pos, pos + nInserted - nDeleted);

  // Re-parse the changed region; we do this by parsing from the
  // beginning of the previous line of the changed region to the end of
  // the line of the changed region...	Then we check the last
  // style character and keep updating if we have a multi-line
  // comment character...
  start = textbuf->line_start(pos);
//	if (start > 0) start = textbuf->line_start(start - 1);
  end	= textbuf->line_end(pos + nInserted);
  text	= textbuf->text_range(start, end);
  style = stylebuf->text_range(start, end);
  if (start==end)
	last = 0;
  else
	last  = style[end - start - 1];

//	printf("start = %d, end = %d, text = \"%s\", style = \"%s\", last='%c'...\n",
//		   start, end, text, style, last);

  style_parse(text, style, end - start);

//	printf("new style = \"%s\", new last='%c'...\n",
//		   style, style[end - start - 1]);

  stylebuf->replace(start, end, style);
  editor->redisplay_range(start, end);

  if (start==end || last != style[end - start - 1]) {
//	  printf("Recalculate the rest of the buffer style\n");
	// Either the user deleted some text, or the last character
	// on the line changed styles, so reparse the
	// remainder of the buffer...
	free(text);
	free(style);

	end	  = textbuf->length();
	text  = textbuf->text_range(start, end);
	style = stylebuf->text_range(start, end);

	style_parse(text, style, end - start);

	stylebuf->replace(start, end, style);
	editor->redisplay_range(start, end);
  }

  free(text);
  free(style);
}