/**
   * Provides a mapping from the view coordinate space to the logical coordinate space of the model.
   *
   * @param fx the X coordinate >= 0
   * @param fy the Y coordinate >= 0
   * @param a the allocated region to render into
   * @return the location within the model that best represents the given point in the view >= 0
   */
  @Override
  public int viewToModel(float fx, float fy, Shape a, Position.Bias[] bias) {

    bias[0] = Position.Bias.Forward;

    Rectangle alloc = a.getBounds();
    RSyntaxDocument doc = (RSyntaxDocument) getDocument();
    int x = (int) fx;
    int y = (int) fy;

    // If they're asking about a view position above the area covered by
    // this view, then the position is assumed to be the starting position
    // of this view.
    if (y < alloc.y) {
      return getStartOffset();
    }

    // If they're asking about a position below this view, the position
    // is assumed to be the ending position of this view.
    else if (y > alloc.y + alloc.height) {
      return host.getLastVisibleOffset();
    }

    // They're asking about a position within the coverage of this view
    // vertically.  So, we figure out which line the point corresponds to.
    // If the line is greater than the number of lines contained, then
    // simply use the last line as it represents the last possible place
    // we can position to.
    else {

      Element map = doc.getDefaultRootElement();
      int lineIndex = Math.abs((y - alloc.y) / lineHeight); // metrics.getHeight() );
      FoldManager fm = host.getFoldManager();
      // System.out.print("--- " + lineIndex);
      lineIndex += fm.getHiddenLineCountAbove(lineIndex, true);
      // System.out.println(" => " + lineIndex);
      if (lineIndex >= map.getElementCount()) {
        return host.getLastVisibleOffset();
      }

      Element line = map.getElement(lineIndex);

      // If the point is to the left of the line...
      if (x < alloc.x) {
        return line.getStartOffset();
      } else if (x > alloc.x + alloc.width) {
        return line.getEndOffset() - 1;
      } else {
        // Determine the offset into the text
        int p0 = line.getStartOffset();
        Token tokenList = doc.getTokenListForLine(lineIndex);
        tabBase = alloc.x;
        int offs = tokenList.getListOffset((RSyntaxTextArea) getContainer(), this, tabBase, x);
        return offs != -1 ? offs : p0;
      }
    } // End of else.
  }
Ejemplo n.º 2
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    /**
     * Provides a mapping from the document model coordinate space to the coordinate space of the
     * view mapped to it.
     *
     * @param pos the position to convert
     * @param a the allocated region to render into
     * @return the bounding box of the given position is returned
     * @exception BadLocationException if the given position does not represent a valid location in
     *     the associated document.
     */
    @Override
    public Shape modelToView(int pos, Shape a, Position.Bias b) throws BadLocationException {

      // System.err.println("--- begin modelToView ---");
      Rectangle alloc = a.getBounds();
      RSyntaxTextArea textArea = (RSyntaxTextArea) getContainer();
      alloc.height = textArea.getLineHeight(); // metrics.getHeight();
      alloc.width = 1;
      int p0 = getStartOffset();
      int p1 = getEndOffset();
      int testP = (b == Position.Bias.Forward) ? pos : Math.max(p0, pos - 1);

      // Get the token list for this line so we don't have to keep
      // recomputing it if this logical line spans multiple physical
      // lines.
      RSyntaxDocument doc = (RSyntaxDocument) getDocument();
      Element map = doc.getDefaultRootElement();
      int line = map.getElementIndex(p0);
      Token tokenList = doc.getTokenListForLine(line);
      float x0 = alloc.x; // 0;

      while (p0 < p1) {
        TokenSubList subList =
            TokenUtils.getSubTokenList(
                tokenList, p0, WrappedSyntaxView.this, textArea, x0, lineCountTempToken);
        x0 = subList != null ? subList.x : x0;
        tokenList = subList != null ? subList.tokenList : null;
        int p = calculateBreakPosition(p0, tokenList, x0);
        if ((pos >= p0) && (testP < p)) { // pos < p)) {
          // it's in this line
          alloc =
              RSyntaxUtilities.getLineWidthUpTo(
                  textArea, s, p0, pos, WrappedSyntaxView.this, alloc, alloc.x);
          // System.err.println("--- end modelToView ---");
          return alloc;
        }
        // if (p == p1 && pos == p1) {
        if (p == p1 - 1 && pos == p1 - 1) {
          // Wants end.
          if (pos > p0) {
            alloc =
                RSyntaxUtilities.getLineWidthUpTo(
                    textArea, s, p0, pos, WrappedSyntaxView.this, alloc, alloc.x);
          }
          // System.err.println("--- end modelToView ---");
          return alloc;
        }

        p0 = (p == p0) ? p1 : p;
        // System.err.println("... ... Incrementing y");
        alloc.y += alloc.height;
      }

      throw new BadLocationException(null, pos);
    }
Ejemplo n.º 3
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    /** Calculate the number of lines that will be rendered by logical line when it is wrapped. */
    final int calculateLineCount() {

      int nlines = 0;
      int startOffset = getStartOffset();
      int p1 = getEndOffset();

      // Get the token list for this line so we don't have to keep
      // recomputing it if this logical line spans multiple physical
      // lines.
      RSyntaxTextArea textArea = (RSyntaxTextArea) getContainer();
      RSyntaxDocument doc = (RSyntaxDocument) getDocument();
      Element map = doc.getDefaultRootElement();
      int line = map.getElementIndex(startOffset);
      Token tokenList = doc.getTokenListForLine(line);
      float x0 = 0; // FIXME:  should be alloc.x!! alloc.x;//0;

      // System.err.println(">>> calculateLineCount: " + startOffset + "-" + p1);
      for (int p0 = startOffset; p0 < p1; ) {
        // System.err.println("... ... " + p0 + ", " + p1);
        nlines += 1;
        TokenSubList subList =
            TokenUtils.getSubTokenList(
                tokenList, p0, WrappedSyntaxView.this, textArea, x0, lineCountTempToken);
        x0 = subList != null ? subList.x : x0;
        tokenList = subList != null ? subList.tokenList : null;
        int p = calculateBreakPosition(p0, tokenList, x0);

        // System.err.println("... ... ... break position p==" + p);
        p0 = (p == p0) ? ++p : p; // this is the fix of #4410243
        // we check on situation when
        // width is too small and
        // break position is calculated
        // incorrectly.
        // System.err.println("... ... ... new p0==" + p0);
      }
      /*
      int numLines = 0;
      try {
      	numLines = textArea.getLineCount();
      } catch (BadLocationException ble) {
      	ble.printStackTrace();
      }
      System.err.println(">>> >>> calculated number of lines for this view (line " + line + "/" + numLines + ": " + nlines);
      */
      return nlines;
    }
Ejemplo n.º 4
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 /**
  * Returns a token list for the <i>physical</i> line above the physical line containing the
  * specified offset into the document. Note that for this plain (non-wrapped) view, this is simply
  * the token list for the logical line above the line containing <code>offset</code>, since lines
  * are not wrapped.
  *
  * @param offset The offset in question.
  * @return A token list for the physical (and in this view, logical) line before this one. If
  *     <code>offset</code> is in the first line in the document, <code>null</code> is returned.
  */
 public Token getTokenListForPhysicalLineAbove(int offset) {
   RSyntaxDocument document = (RSyntaxDocument) getDocument();
   Element map = document.getDefaultRootElement();
   int line = map.getElementIndex(offset);
   FoldManager fm = host.getFoldManager();
   if (fm == null) {
     line--;
     if (line >= 0) {
       return document.getTokenListForLine(line);
     }
   } else {
     line = fm.getVisibleLineAbove(line);
     if (line >= 0) {
       return document.getTokenListForLine(line);
     }
   }
   //		int line = map.getElementIndex(offset) - 1;
   //		if (line>=0)
   //			return document.getTokenListForLine(line);
   return null;
 }
Ejemplo n.º 5
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 /**
  * Returns a token list for the <i>physical</i> line below the physical line containing the
  * specified offset into the document. Note that for this plain (non-wrapped) view, this is simply
  * the token list for the logical line below the line containing <code>offset</code>, since lines
  * are not wrapped.
  *
  * @param offset The offset in question.
  * @return A token list for the physical (and in this view, logical) line after this one. If
  *     <code>offset</code> is in the last physical line in the document, <code>null</code> is
  *     returned.
  */
 public Token getTokenListForPhysicalLineBelow(int offset) {
   RSyntaxDocument document = (RSyntaxDocument) getDocument();
   Element map = document.getDefaultRootElement();
   int lineCount = map.getElementCount();
   int line = map.getElementIndex(offset);
   if (!host.isCodeFoldingEnabled()) {
     if (line < lineCount - 1) {
       return document.getTokenListForLine(line + 1);
     }
   } else {
     FoldManager fm = host.getFoldManager();
     line = fm.getVisibleLineBelow(line);
     if (line >= 0 && line < lineCount) {
       return document.getTokenListForLine(line);
     }
   }
   //		int line = map.getElementIndex(offset);
   //		int lineCount = map.getElementCount();
   //		if (line<lineCount-1)
   //			return document.getTokenListForLine(line+1);
   return null;
 }
Ejemplo n.º 6
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    /**
     * Provides a mapping from the view coordinate space to the logical coordinate space of the
     * model.
     *
     * @param fx the X coordinate
     * @param fy the Y coordinate
     * @param a the allocated region to render into
     * @return the location within the model that best represents the given point in the view
     * @see View#viewToModel
     */
    @Override
    public int viewToModel(float fx, float fy, Shape a, Position.Bias[] bias) {

      // PENDING(prinz) implement bias properly
      bias[0] = Position.Bias.Forward;

      Rectangle alloc = (Rectangle) a;
      RSyntaxDocument doc = (RSyntaxDocument) getDocument();
      int x = (int) fx;
      int y = (int) fy;
      if (y < alloc.y) {
        // above the area covered by this icon, so the the position
        // is assumed to be the start of the coverage for this view.
        return getStartOffset();
      } else if (y > alloc.y + alloc.height) {
        // below the area covered by this icon, so the the position
        // is assumed to be the end of the coverage for this view.
        return getEndOffset() - 1;
      } else {

        // positioned within the coverage of this view vertically,
        // so we figure out which line the point corresponds to.
        // if the line is greater than the number of lines
        // contained, then simply use the last line as it represents
        // the last possible place we can position to.

        RSyntaxTextArea textArea = (RSyntaxTextArea) getContainer();
        alloc.height = textArea.getLineHeight();
        int p1 = getEndOffset();

        // Get the token list for this line so we don't have to keep
        // recomputing it if this logical line spans multiple
        // physical lines.
        Element map = doc.getDefaultRootElement();
        int p0 = getStartOffset();
        int line = map.getElementIndex(p0);
        Token tlist = doc.getTokenListForLine(line);

        // Look at each physical line-chunk of this logical line.
        while (p0 < p1) {

          // We can always use alloc.x since we always break
          // lines so they start at the beginning of a physical
          // line.
          TokenSubList subList =
              TokenUtils.getSubTokenList(
                  tlist, p0, WrappedSyntaxView.this, textArea, alloc.x, lineCountTempToken);
          tlist = subList != null ? subList.tokenList : null;
          int p = calculateBreakPosition(p0, tlist, alloc.x);

          // If desired view position is in this physical chunk.
          if ((y >= alloc.y) && (y < (alloc.y + alloc.height))) {

            // Point is to the left of the line
            if (x < alloc.x) {
              return p0;
            }

            // Point is to the right of the line
            else if (x > alloc.x + alloc.width) {
              return p - 1;
            }

            // Point is in this physical line!
            else {

              // Start at alloc.x since this chunk starts
              // at the beginning of a physical line.
              int n = tlist.getListOffset(textArea, WrappedSyntaxView.this, alloc.x, x);

              // NOTE:  We needed to add the max() with
              // p0 as getTokenListForLine returns -1
              // for empty lines (just a null token).
              // How did this work before?
              // FIXME:  Have null tokens have their
              // offset but a -1 length.
              return Math.max(Math.min(n, p1 - 1), p0);
            } // End of else.
          } // End of if ((y>=alloc.y) && ...

          p0 = (p == p0) ? p1 : p;
          alloc.y += alloc.height;
        } // End of while (p0<p1).

        return getEndOffset() - 1;
      } // End of else.
    }