diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Fl_Text_Buffer.cxx | 29 | ||||
| -rw-r--r-- | src/Fl_Text_Display.cxx | 250 |
2 files changed, 154 insertions, 125 deletions
diff --git a/src/Fl_Text_Buffer.cxx b/src/Fl_Text_Buffer.cxx index 622ccd1ee..565e6183b 100644 --- a/src/Fl_Text_Buffer.cxx +++ b/src/Fl_Text_Buffer.cxx @@ -1585,7 +1585,7 @@ int Fl_Text_Buffer::outputfile(const char *file, int start, int end, Return the previous character position. Uncode safe. */ -int Fl_Text_Buffer::prev_char(int pos) const +int Fl_Text_Buffer::prev_char_clipped(int pos) const { if (pos<=0) return 0; @@ -1601,9 +1601,21 @@ int Fl_Text_Buffer::prev_char(int pos) const return pos; } + +/* + Return the previous character poosition. + Returns -1 if the beginning of the buffer is reached. + */ +int Fl_Text_Buffer::prev_char(int pos) const +{ + if (pos==0) return -1; + return prev_char_clipped(pos); +} + + /* Return the next character position. - Uncode safe. + Returns length() if the end of the buffer is reached. */ int Fl_Text_Buffer::next_char(int pos) const { @@ -1614,6 +1626,19 @@ int Fl_Text_Buffer::next_char(int pos) const return pos; } + +/* + Return the next character poosition. + If the end of the buffer is reached, it returns the current position. + */ +int Fl_Text_Buffer::next_char_clipped(int pos) const +{ + int n = next_char(pos); + if (pos==mLength) return pos; + return n; +} + + // // End of "$Id$". // diff --git a/src/Fl_Text_Display.cxx b/src/Fl_Text_Display.cxx index 0eb4cf99d..f123d8e11 100644 --- a/src/Fl_Text_Display.cxx +++ b/src/Fl_Text_Display.cxx @@ -38,6 +38,14 @@ #include <FL/Fl_Text_Display.H> #include <FL/Fl_Window.H> +#define ASSERT_UTF8 + +#ifdef ASSERT_UTF8 +#define IS_UTF8_ALIGNED(a) if (a && *a) assert(fl_utf8len(*(a))>0); +#else +#define IS_UTF8_ALIGNED(a) +#endif + #undef min #undef max @@ -86,8 +94,6 @@ static int scroll_x = 0; \param X, Y, W, H position and size of widget \param l label text, defaults to none - - \todo Unicode? */ Fl_Text_Display::Fl_Text_Display(int X, int Y, int W, int H, const char* l) : Fl_Group(X, Y, W, H, l) { @@ -169,8 +175,6 @@ Fl_Text_Display::Fl_Text_Display(int X, int Y, int W, int H, const char* l) Note, the text BUFFER that the text display displays is a separate entity and is not freed, nor are the style buffer or style table. - - \todo Unicode? */ Fl_Text_Display::~Fl_Text_Display() { if (scroll_direction) { @@ -189,8 +193,6 @@ Fl_Text_Display::~Fl_Text_Display() { /** Attach a text buffer to display, replacing the current buffer (if any) \param buf attach this text buffer - - \todo Unicode? */ void Fl_Text_Display::buffer( Fl_Text_Buffer *buf ) { /* If the text display is already displaying a buffer, clear it off @@ -221,7 +223,8 @@ void Fl_Text_Display::buffer( Fl_Text_Buffer *buf ) { /** - Attach (or remove) highlight information in text display and redisplay. + \brief Attach (or remove) highlight information in text display and redisplay. + Highlighting information consists of a style buffer which parallels the normal text buffer, but codes font and color information for the display; a style table which translates style buffer codes (indexed by buffer @@ -245,8 +248,6 @@ void Fl_Text_Display::buffer( Fl_Text_Buffer *buf ) { this callback will be called \param cbArg and optional argument for the callback above, usuallay a pointer to the Text Display. - - \todo Unicode? */ void Fl_Text_Display::highlight_data(Fl_Text_Buffer *styleBuffer, const Style_Table_Entry *styleTable, @@ -269,8 +270,6 @@ void Fl_Text_Display::highlight_data(Fl_Text_Buffer *styleBuffer, /** \brief Find the longest line of all visible lines. \return the width of the longest visible line in pixels - - \todo Unicode? */ int Fl_Text_Display::longest_vline() const { int longest = 0; @@ -286,8 +285,6 @@ int Fl_Text_Display::longest_vline() const { Calling this function will trigger a recalculation of all lines visible and of all scrollbar sizes. \param X, Y, W, H new position and size of this widget - - \todo Unicode? */ void Fl_Text_Display::resize(int X, int Y, int W, int H) { #ifdef DEBUG @@ -295,8 +292,7 @@ void Fl_Text_Display::resize(int X, int Y, int W, int H) { #endif // DEBUG const int oldWidth = w(); #ifdef DEBUG - printf(" oldWidth=%d, mContinuousWrap=%d, mWrapMargin=%d\n", oldWidth, - mContinuousWrap, mWrapMargin); + printf(" oldWidth=%d, mContinuousWrap=%d, mWrapMargin=%d\n", oldWidth, mContinuousWrap, mWrapMargin); #endif // DEBUG Fl_Widget::resize(X,Y,W,H); if (!buffer()) return; @@ -333,8 +329,7 @@ void Fl_Text_Display::resize(int X, int Y, int W, int H) { mNBufferLines = count_lines(0, buffer()->length(), true); mFirstChar = line_start(mFirstChar); mTopLineNum = count_lines(0, mFirstChar, true)+1; - absolute_top_line_number(oldFirstChar); - + absolute_top_line_number(oldFirstChar); #ifdef DEBUG printf(" mNBufferLines=%d\n", mNBufferLines); #endif // DEBUG @@ -456,8 +451,6 @@ void Fl_Text_Display::resize(int X, int Y, int W, int H) { \brief Refresh a rectangle of the text display. \param left, top are in coordinates of the text drawing window. \param width, height isze in pixels - - \todo Unicode? */ void Fl_Text_Display::draw_text( int left, int top, int width, int height ) { int fontHeight, firstLine, lastLine, line; @@ -488,29 +481,11 @@ void Fl_Text_Display::draw_text( int left, int top, int width, int height ) { the widget. \param startpos index of first character needing redraw \param endpos index after last character needing redraw - - \todo Unicode? */ void Fl_Text_Display::redisplay_range(int startpos, int endpos) { - int ok = 0; - while (!ok && startpos > 0) { - // FIXME: character is ucs-4 - char c = buffer()->char_at( startpos ); - if (!((c & 0x80) && !(c & 0x40))) { - ok = 1; - } else { - startpos--; - } - } - while (!ok && endpos < buffer()->length()) { - // FIXME: character is ucs-4 - char c = buffer()->char_at( endpos ); - if (!((c & 0x80) && !(c & 0x40))) { - ok = 1; - } else { - endpos++; - } - } + IS_UTF8_ALIGNED(buffer()->address(startpos)) + IS_UTF8_ALIGNED(buffer()->address(endpos)) + if (damage_range1_start == -1 && damage_range1_end == -1) { damage_range1_start = startpos; damage_range1_end = endpos; @@ -542,15 +517,16 @@ void Fl_Text_Display::redisplay_range(int startpos, int endpos) { \param startpos index of first character to draw \param endpos index after last character to draw - - \todo Unicode? */ void Fl_Text_Display::draw_range(int startpos, int endpos) { + IS_UTF8_ALIGNED(buffer()->address(startpos)) + IS_UTF8_ALIGNED(buffer()->address(endpos)) + int i, startLine, lastLine, startIndex, endIndex; /* If the range is outside of the displayed text, just return */ - if ( endpos < mFirstChar || ( startpos > mLastChar && - !empty_vlines() ) ) return; + if ( endpos < mFirstChar || ( startpos > mLastChar && !empty_vlines() ) ) + return; /* Clean up the starting and ending values */ if ( startpos < 0 ) startpos = 0; @@ -573,8 +549,7 @@ void Fl_Text_Display::draw_range(int startpos, int endpos) { } /* Get the starting and ending positions within the lines */ - startIndex = mLineStarts[ startLine ] == -1 ? 0 : - startpos - mLineStarts[ startLine ]; + startIndex = mLineStarts[ startLine ] == -1 ? 0 : startpos - mLineStarts[ startLine ]; if ( endpos >= mLastChar ) endIndex = INT_MAX; else if ( mLineStarts[ lastLine ] == -1 ) @@ -607,13 +582,12 @@ void Fl_Text_Display::draw_range(int startpos, int endpos) { Move the insertion cursor in front of the character at \p newPos. This function may trigger a redraw. \param newPos new caret position - - \todo Unicode? */ void Fl_Text_Display::insert_position( int newPos ) { + IS_UTF8_ALIGNED(buffer()->address(newPos)) + /* make sure new position is ok, do nothing if it hasn't changed */ - if ( newPos == mCursorPos ) - return; + if ( newPos == mCursorPos ) return; if ( newPos < 0 ) newPos = 0; if ( newPos > mBuffer->length() ) newPos = mBuffer->length(); @@ -621,12 +595,12 @@ void Fl_Text_Display::insert_position( int newPos ) { mCursorPreferredCol = -1; /* erase the cursor at it's previous position */ - redisplay_range(mCursorPos - 1, mCursorPos + 1); // FIXME utf8 + redisplay_range(buffer()->prev_char_clipped(mCursorPos), buffer()->next_char(mCursorPos)); mCursorPos = newPos; /* draw cursor at its new position */ - redisplay_range(mCursorPos - 1, mCursorPos + 1); // FIXME utf8 + redisplay_range(buffer()->prev_char_clipped(mCursorPos), buffer()->next_char(mCursorPos)); } @@ -635,12 +609,10 @@ void Fl_Text_Display::insert_position( int newPos ) { \brief Shows the text cursor. This function may trigger a redraw. \param b show(1) or hide(0) the text cursor (caret). - - \todo Unicode? */ void Fl_Text_Display::show_cursor(int b) { mCursorOn = b; - redisplay_range(mCursorPos - 1, mCursorPos + 1); // FIXME utf8 + redisplay_range(buffer()->prev_char_clipped(mCursorPos), buffer()->next_char(mCursorPos)); } @@ -653,14 +625,12 @@ void Fl_Text_Display::show_cursor(int b) { \li Fl_Text_Display::CARET_CURSOR - Shows a caret under the text. \li Fl_Text_Display::DIM_CURSOR - Shows a dimmed I beam. \li Fl_Text_Display::BLOCK_CURSOR - Shows an unfilled box around the current - character. + character. \li Fl_Text_Display::HEAVY_CURSOR - Shows a thick I beam. This call also switches the cursor on and may trigger a redraw. \param style new cursor style - - \todo Unicode? */ void Fl_Text_Display::cursor_style(int style) { mCursorStyle = style; @@ -683,8 +653,6 @@ void Fl_Text_Display::cursor_style(int style) { \todo this does not work for multi-byte characters yet \todo we need new wrap modes to wrap at the window edge and based on pixel width or average character width. - - \todo Unicode? */ void Fl_Text_Display::wrap_mode(int wrap, int wrapMargin) { mWrapMargin = wrapMargin; @@ -726,10 +694,11 @@ void Fl_Text_Display::wrap_mode(int wrap, int wrapMargin) { that it's optimized to do less redrawing. \param text new text in UTF-8 encoding. - - \todo Unicode? */ void Fl_Text_Display::insert(const char* text) { + IS_UTF8_ALIGNED(buffer()->address(mCursorPos)) + IS_UTF8_ALIGNED(text) + int pos = mCursorPos; mCursorToHint = pos + strlen( text ); @@ -741,33 +710,36 @@ void Fl_Text_Display::insert(const char* text) { /** \brief Replaces text at the current insert position. - \param text new text in YTF-8 encoding + \param text new text in UTF-8 encoding - \todo Unicode? + \todo Unicode? Find out exactly what we do here and simplify. */ void Fl_Text_Display::overstrike(const char* text) { + IS_UTF8_ALIGNED(buffer()->address(mCursorPos)) + IS_UTF8_ALIGNED(text) + int startPos = mCursorPos; Fl_Text_Buffer *buf = mBuffer; int lineStart = buf->line_start( startPos ); int textLen = strlen( text ); int i, p, endPos, indent, startIndent, endIndent; const char *c; - char ch, *paddedText = NULL; + unsigned int ch; + char *paddedText = NULL; /* determine how many displayed character positions are covered */ startIndent = mBuffer->count_displayed_characters( lineStart, startPos ); indent = startIndent; - for ( c = text; *c != '\0'; c++ ) + for ( c = text; *c != '\0'; c += fl_utf8len(*c) ) indent++; endIndent = indent; /* find which characters to remove, and if necessary generate additional padding to make up for removed control characters at the end */ indent = startIndent; - for ( p = startPos; ; p++ ) { + for ( p = startPos; ; p=buffer()->next_char(p) ) { if ( p == buf->length() ) break; - // FIXME: character is ucs-4 ch = buf->char_at( p ); if ( ch == '\n' ) break; @@ -810,10 +782,10 @@ void Fl_Text_Display::overstrike(const char* text) { \param pos character index \param[out] X, Y pixel position of character on screen \return 0 if charater vertically out of view, X position otherwise - - \todo Unicode? */ int Fl_Text_Display::position_to_xy( int pos, int* X, int* Y ) const { + IS_UTF8_ALIGNED(buffer()->address(pos)) + int lineStartPos, fontHeight, lineLen; int visLineNum; @@ -849,7 +821,7 @@ int Fl_Text_Display::position_to_xy( int pos, int* X, int* Y ) const { /** - \brief Find the line an column number of position "pos". + \brief Find the line and column number of position "pos". This only works for displayed lines. If the line is not displayed, the function returns 0 (without the mLineStarts array it could turn in to very long @@ -864,18 +836,17 @@ int Fl_Text_Display::position_to_xy( int pos, int* X, int* Y ) const { \todo a column number makes little sense in the UTF-8/variable font width environment. We will have to further define what exactly we want to return. Please check teh functions that call this particular function. - - \todo Unicode? */ int Fl_Text_Display::position_to_linecol( int pos, int* lineNum, int* column ) const { + IS_UTF8_ALIGNED(buffer()->address(pos)) + int retVal; /* In continuous wrap mode, the absolute (non-wrapped) line count is maintained separately, as needed. Only return it if we're actually keeping track of it and pos is in the displayed text */ if (mContinuousWrap) { - if (!maintaining_absolute_top_line_number() || - pos < mFirstChar || pos > mLastChar) + if (!maintaining_absolute_top_line_number() || pos < mFirstChar || pos > mLastChar) return 0; *lineNum = mAbsTopLineNum + buffer()->count_lines(mFirstChar, pos); *column = buffer()->count_displayed_characters(buffer()->line_start(pos), pos); @@ -896,11 +867,10 @@ int Fl_Text_Display::position_to_linecol( int pos, int* lineNum, int* column ) c \brief Check if a pixel position is within the primary seection. \param X, Y pixel position to test \return 1 if position (X, Y) is inside of the primary Fl_Text_Selection - - \todo Unicode? */ int Fl_Text_Display::in_selection( int X, int Y ) const { int pos = xy_to_position( X, Y, CHARACTER_POS ); + IS_UTF8_ALIGNED(buffer()->address(pos)) Fl_Text_Buffer *buf = mBuffer; return buf->primary_selection()->includes(pos); } @@ -936,8 +906,7 @@ int Fl_Text_Display::wrapped_column(int row, int column) const { if (dispLineStart == -1) return column; lineStart = buffer()->line_start(dispLineStart); - return column - + buffer()->count_displayed_characters(lineStart, dispLineStart); + return column + buffer()->count_displayed_characters(lineStart, dispLineStart); } @@ -956,8 +925,6 @@ int Fl_Text_Display::wrapped_column(int row, int column) const { \return something unknown \todo What does this do and how is it useful? Column numbers mean little in this context. Which functions depend on this one? - - \todo Unicode? */ int Fl_Text_Display::wrapped_row(int row) const{ if (!mContinuousWrap || row < 0 || row > mNVisibleLines) @@ -1186,6 +1153,9 @@ int Fl_Text_Display::move_down() { */ int Fl_Text_Display::count_lines(int startPos, int endPos, bool startPosIsLineStart) const { + IS_UTF8_ALIGNED(buffer()->address(startPos)) + IS_UTF8_ALIGNED(buffer()->address(endPos)) + int retLines, retPos, retLineStart, retLineEnd; #ifdef DEBUG @@ -1228,6 +1198,8 @@ int Fl_Text_Display::count_lines(int startPos, int endPos, */ int Fl_Text_Display::skip_lines(int startPos, int nLines, bool startPosIsLineStart) { + IS_UTF8_ALIGNED(buffer()->address(startPos)) + int retLines, retPos, retLineStart, retLineEnd; /* if we're not wrapping use more efficient BufCountForwardNLines */ @@ -1272,6 +1244,8 @@ int Fl_Text_Display::skip_lines(int startPos, int nLines, \todo Unicode? */ int Fl_Text_Display::line_end(int pos, bool startPosIsLineStart) const { + IS_UTF8_ALIGNED(buffer()->address(pos)) + int retLines, retPos, retLineStart, retLineEnd; /* If we're not wrapping use more efficien BufEndOfLine */ @@ -1300,6 +1274,8 @@ int Fl_Text_Display::line_end(int pos, bool startPosIsLineStart) const { \todo Unicode? */ int Fl_Text_Display::line_start(int pos) const { + IS_UTF8_ALIGNED(buffer()->address(pos)) + int retLines, retPos, retLineStart, retLineEnd; /* If we're not wrapping, use the more efficient BufStartOfLine */ @@ -1325,6 +1301,8 @@ int Fl_Text_Display::line_start(int pos) const { \todo Unicode? */ int Fl_Text_Display::rewind_lines(int startPos, int nLines) { + IS_UTF8_ALIGNED(buffer()->address(startPos)) + Fl_Text_Buffer *buf = buffer(); int pos, lineStart, retLines, retPos, retLineStart, retLineEnd; @@ -1451,6 +1429,7 @@ void Fl_Text_Display::buffer_modified_cb( int pos, int nInserted, int nDeleted, int linesInserted, linesDeleted, startDispPos, endDispPos; Fl_Text_Display *textD = ( Fl_Text_Display * ) cbArg; Fl_Text_Buffer *buf = textD->mBuffer; + IS_UTF8_ALIGNED(buf->address(pos)) int oldFirstChar = textD->mFirstChar; int scrolled, origCursorPos = textD->mCursorPos; int wrapModStart, wrapModEnd; @@ -1667,6 +1646,8 @@ void Fl_Text_Display::reset_absolute_top_line_number() { \todo Unicode? */ int Fl_Text_Display::position_to_line( int pos, int *lineNum ) const { + IS_UTF8_ALIGNED(buffer()->address(pos)) + int i; *lineNum = 0; @@ -1725,6 +1706,10 @@ int Fl_Text_Display::handle_vline( int Y, int bottomClip, int leftClip, int rightClip) const { + IS_UTF8_ALIGNED(buffer()->address(lineStartPos)) + IS_UTF8_ALIGNED(buffer()->address(leftChar)) + if (rightChar!=INT_MAX) IS_UTF8_ALIGNED(buffer()->address(rightChar)) + // FIXME: we need to allow two modes for FIND_INDEX: one on the edge of the // FIXME: character for selection, and one on the character center for cursors. int i, X, startX, startIndex, style, charStyle; @@ -1818,6 +1803,8 @@ int Fl_Text_Display::handle_vline( \todo Unicode? */ int Fl_Text_Display::find_x(const char *s, int len, int style, int x) const { + IS_UTF8_ALIGNED(s) + // FIXME: use binary search which is much quicker! int i = 0; while (i<len) { @@ -1917,6 +1904,8 @@ void Fl_Text_Display::draw_vline(int visLineNum, int leftClip, int rightClip, void Fl_Text_Display::draw_string(int style, int X, int Y, int toX, const char *string, int nChars) const { + IS_UTF8_ALIGNED(string) + const Style_Table_Entry * styleRec; /* Draw blank area rather than text, if that was the request */ @@ -2133,6 +2122,8 @@ void Fl_Text_Display::draw_cursor( int X, int Y ) { */ int Fl_Text_Display::position_style( int lineStartPos, int lineLen, int lineIndex) const { + IS_UTF8_ALIGNED(buffer()->address(lineStartPos)) + Fl_Text_Buffer * buf = mBuffer; Fl_Text_Buffer *styleBuf = mStyleBuffer; int pos, style = 0; @@ -2170,12 +2161,12 @@ int Fl_Text_Display::position_style( int lineStartPos, int lineLen, int lineInde \param length number of bytes instring \param style index into style table \return width of text segemnt in pixels - - \todo Unicode? */ int Fl_Text_Display::string_width( const char *string, int length, int style ) const { + IS_UTF8_ALIGNED(string) + Fl_Font font; - int fsize; + Fl_Fontsize fsize; if ( style & STYLE_LOOKUP_MASK ) { int si = (style & STYLE_LOOKUP_MASK) - 'A'; @@ -2357,6 +2348,8 @@ void Fl_Text_Display::offset_line_starts( int newTopLineNum ) { */ void Fl_Text_Display::update_line_starts( int pos, int charsInserted, int charsDeleted, int linesInserted, int linesDeleted, int *scrolled ) { + IS_UTF8_ALIGNED(buffer()->address(pos)) + int * lineStarts = mLineStarts; int i, lineOfPos, lineOfEnd, nVisLines = mNVisibleLines; int charDelta = charsInserted - charsDeleted; @@ -2457,7 +2450,7 @@ void Fl_Text_Display::update_line_starts( int pos, int charsInserted, newlines to fill in the requested entries. Out of range values for "startLine" and "endLine" are acceptable. - \param startLine, endLine range of lines to scan. + \param startLine, endLine range of lines to scan as line numbers \todo Unicode? */ @@ -2729,6 +2722,8 @@ static int min( int i1, int i2 ) { \todo Unicode? */ static int countlines( const char *string ) { + IS_UTF8_ALIGNED(string) + const char * c; int lineCount = 0; @@ -2831,6 +2826,9 @@ int Fl_Text_Display::vline_length( int visLineNum ) const { void Fl_Text_Display::find_wrap_range(const char *deletedText, int pos, int nInserted, int nDeleted, int *modRangeStart, int *modRangeEnd, int *linesInserted, int *linesDeleted) { + IS_UTF8_ALIGNED(deletedText) + IS_UTF8_ALIGNED(buffer()->address(pos)) + int length, retPos, retLines, retLineStart, retLineEnd; Fl_Text_Buffer *deletedTextBuf, *buf = buffer(); int nVisLines = mNVisibleLines; @@ -2855,6 +2853,7 @@ void Fl_Text_Display::find_wrap_range(const char *deletedText, int pos, } else countFrom = buf->line_start(pos); + IS_UTF8_ALIGNED(buffer()->address(countFrom)) /* ** Move forward through the (new) text one line at a time, counting @@ -2994,6 +2993,8 @@ void Fl_Text_Display::find_wrap_range(const char *deletedText, int pos, \todo Unicode? */ void Fl_Text_Display::measure_deleted_lines(int pos, int nDeleted) { + IS_UTF8_ALIGNED(buffer()->address(pos)) + int retPos, retLines, retLineStart, retLineEnd; Fl_Text_Buffer *buf = buffer(); int nVisLines = mNVisibleLines; @@ -3093,11 +3094,14 @@ void Fl_Text_Display::wrapped_line_counter(Fl_Text_Buffer *buf, int startPos, int maxPos, int maxLines, bool startPosIsLineStart, int styleBufOffset, int *retPos, int *retLines, int *retLineStart, int *retLineEnd, bool countLastLineMissingNewLine) const { + IS_UTF8_ALIGNED(buf->address(startPos)) + if (maxPos<buf->length()) IS_UTF8_ALIGNED(buf->address(maxPos)) + int lineStart, newLineStart = 0, b, p, colNum, wrapMargin; int maxWidth, i, foundBreak, width; bool countPixels; int nLines = 0; - unsigned char c; + unsigned int c; /* If the font is fixed, or there's a wrap margin set, it's more efficient to measure in columns, than to count pixels. Determine if we can count @@ -3128,9 +3132,8 @@ void Fl_Text_Display::wrapped_line_counter(Fl_Text_Buffer *buf, int startPos, */ colNum = 0; width = 0; - for (p=lineStart; p<buf->length(); p++) { - // FIXME: character is ucs-4 - c = (unsigned char)buf->char_at(p); + for (p=lineStart; p<buf->length(); p=buffer()->next_char(p)) { + c = buf->char_at(p); // UCS-4 /* If the character was a newline, count the line and start over, otherwise, add it to the width and column counts */ @@ -3144,18 +3147,22 @@ void Fl_Text_Display::wrapped_line_counter(Fl_Text_Buffer *buf, int startPos, } nLines++; if (nLines >= maxLines) { - *retPos = p + 1; + int p1 = buffer()->next_char(p); + *retPos = p1; *retLines = nLines; - *retLineStart = p + 1; + *retLineStart = p1; *retLineEnd = p; return; } - lineStart = p + 1; + lineStart = buffer()->next_char(p); colNum = 0; width = 0; } else { const char *s = buf->address(p); colNum++; + // FIXME: it is not a good idea to simply add character widths because on + // some platforms, the width is a floating point value and depends on the + // previous character as well. if (countPixels) width += measure_proportional_character(s, colNum, p+styleBufOffset); } @@ -3164,29 +3171,26 @@ void Fl_Text_Display::wrapped_line_counter(Fl_Text_Buffer *buf, int startPos, and wrap there */ if (colNum > wrapMargin || width > maxWidth) { foundBreak = false; - for (b=p; b>=lineStart; b--) { - // FIXME: character is ucs-4 - c = (unsigned char)buf->char_at(b); + for (b=p; b>=lineStart; b=buffer()->prev_char(b)) { + c = buf->char_at(b); if (c == '\t' || c == ' ') { - newLineStart = b + 1; + newLineStart = buffer()->next_char(b); if (countPixels) { colNum = 0; width = 0; for (i=b+1; i<p+1; i++) { - width += measure_proportional_character( - // FIXME: character is ucs-4 - buf->address(i), colNum, + width += measure_proportional_character(buf->address(i), colNum, i+styleBufOffset); colNum++; } } else - colNum = buf->count_displayed_characters(b+1, p+1); + colNum = buf->count_displayed_characters(buffer()->next_char(b), buffer()->next_char(p)); foundBreak = true; break; } } if (!foundBreak) { /* no whitespace, just break at margin */ - newLineStart = max(p, lineStart+1); + newLineStart = max(p, buffer()->next_char(lineStart)); const char *s = buf->address(b); colNum++; if (countPixels) @@ -3195,14 +3199,13 @@ void Fl_Text_Display::wrapped_line_counter(Fl_Text_Buffer *buf, int startPos, if (p >= maxPos) { *retPos = maxPos; *retLines = maxPos < newLineStart ? nLines : nLines + 1; - *retLineStart = maxPos < newLineStart ? lineStart : - newLineStart; + *retLineStart = maxPos < newLineStart ? lineStart : newLineStart; *retLineEnd = maxPos; return; } nLines++; if (nLines >= maxLines) { - *retPos = foundBreak ? b + 1 : max(p, lineStart+1); + *retPos = foundBreak ? buffer()->next_char(b) : max(p, buffer()->next_char(lineStart)); *retLines = nLines; *retLineStart = lineStart; *retLineEnd = foundBreak ? b : p; @@ -3215,8 +3218,8 @@ void Fl_Text_Display::wrapped_line_counter(Fl_Text_Buffer *buf, int startPos, /* reached end of buffer before reaching pos or line target */ *retPos = buf->length(); *retLines = nLines; - if (countLastLineMissingNewLine && colNum > 0) - ++(*retLines); + if (countLastLineMissingNewLine && colNum > 0) + *retLines = buffer()->next_char(*retLines); *retLineStart = lineStart; *retLineEnd = buf->length(); } @@ -3239,18 +3242,17 @@ void Fl_Text_Display::wrapped_line_counter(Fl_Text_Buffer *buf, int startPos, insertion/deletion, though static display and wrapping and resizing should now be solid because they are now used for online help display. - \param s ?? - \param colNum ?? - \param pos ?? - \return ?? - - \todo Unicode? + \param s text string + \param colNum unused + \param pos offset within string + \return width of character in pixels */ int Fl_Text_Display::measure_proportional_character(const char *s, int colNum, int pos) const { + IS_UTF8_ALIGNED(s) + int charLen = fl_utf8len(*s), style = 0; if (mStyleBuffer) { - const char *b = mStyleBuffer->address(pos); - style = *b; + style = mStyleBuffer->byte_at(pos); } return string_width(s, charLen, style); } @@ -3278,12 +3280,16 @@ int Fl_Text_Display::measure_proportional_character(const char *s, int colNum, i */ void Fl_Text_Display::find_line_end(int startPos, bool startPosIsLineStart, int *lineEnd, int *nextLineStart) const { + IS_UTF8_ALIGNED(buffer()->address(startPos)) + int retLines, retLineStart; /* if we're not wrapping use more efficient BufEndOfLine */ if (!mContinuousWrap) { - *lineEnd = buffer()->line_end(startPos); - *nextLineStart = min(buffer()->length(), *lineEnd + 1); + int le = buffer()->line_end(startPos); + int ls = buffer()->next_char(le); + *lineEnd = le; + *nextLineStart = min(buffer()->length(), ls); return; } @@ -3291,7 +3297,6 @@ void Fl_Text_Display::find_line_end(int startPos, bool startPosIsLineStart, wrapped_line_counter(buffer(), startPos, buffer()->length(), 1, startPosIsLineStart, 0, nextLineStart, &retLines, &retLineStart, lineEnd); - return; } @@ -3314,21 +3319,20 @@ void Fl_Text_Display::find_line_end(int startPos, bool startPosIsLineStart, used as a wrap point, and just guesses that it wasn't. So if an exact accounting is necessary, don't use this function. - \param lineEndPos ?? - \return ?? - - \todo Unicode? + \param lineEndPos index of character where the line wraps + \return 1 if a \\n character causes the line wrap */ int Fl_Text_Display::wrap_uses_character(int lineEndPos) const { + IS_UTF8_ALIGNED(buffer()->address(lineEndPos)) + char c; if (!mContinuousWrap || lineEndPos == buffer()->length()) return 1; - // FIXME: character is ucs-4 c = buffer()->char_at(lineEndPos); return c == '\n' || ((c == '\t' || c == ' ') && - lineEndPos + 1 != buffer()->length()); + lineEndPos + fl_utf8len(c) < buffer()->length()); } |