X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/5b8b2c84f7f1866a282a45190b1e701942d6b1d1..8f4745feeb2850f3bebb3af45407e164550d541a:/src/common/ctrlcmn.cpp?ds=sidebyside diff --git a/src/common/ctrlcmn.cpp b/src/common/ctrlcmn.cpp index 8cb01a3adb..5e8b9ef8b3 100644 --- a/src/common/ctrlcmn.cpp +++ b/src/common/ctrlcmn.cpp @@ -212,137 +212,179 @@ int wxControlBase::FindAccelIndex(const wxString& label, wxString *labelOnly) return indexAccel; } +wxBorder wxControlBase::GetDefaultBorder() const +{ + return wxBORDER_THEME; +} + +// ---------------------------------------------------------------------------- +// wxControlBase - ellipsization code +// ---------------------------------------------------------------------------- + #define wxELLIPSE_REPLACEMENT wxT("...") -/* static */ -wxString wxControlBase::Ellipsize(const wxString& label, const wxDC& dc, - wxEllipsizeMode mode, int maxFinalWidth) +/* static and protected */ +wxString wxControlBase::DoEllipsizeSingleLine(const wxString& curLine, const wxDC& dc, + wxEllipsizeMode mode, int maxFinalWidth, + int replacementWidth, int marginWidth) { + wxASSERT_MSG(replacementWidth > 0 && marginWidth > 0, + "Invalid parameters"); + wxASSERT_MSG(!curLine.Contains('\n'), + "Use Ellipsize() instead!"); + + // NOTE: this function assumes that any mnemonic/tab character has already + // been handled if it was necessary to handle them (see Ellipsize()) + + if (maxFinalWidth <= 0) + return wxEmptyString; + wxArrayInt charOffsets; - wxString ret; + size_t len = curLine.length(); + if (len == 0 || + !dc.GetPartialTextExtents(curLine, charOffsets)) + return curLine; - // these cannot be cached as they can change because of e.g. a font change - int replacementWidth = dc.GetTextExtent(wxELLIPSE_REPLACEMENT).GetWidth(); - int marginWidth = dc.GetCharWidth()*2; + wxASSERT(charOffsets.GetCount() == len); - // NB: we must handle correctly labels with newlines: - wxString curLine; - wxSize reqsize; - size_t len; - for ( wxString::const_iterator pc = label.begin(); ; ++pc ) + size_t totalWidth = charOffsets.Last(); + if ( totalWidth <= (size_t)maxFinalWidth ) + return curLine; // we don't need to do any ellipsization! + + int excessPixels = totalWidth - maxFinalWidth + + replacementWidth + + marginWidth; // security margin (NEEDED!) + wxASSERT(excessPixels>0); + + // remove characters in excess + size_t initialChar, // index of first char to erase + nChars; // how many chars do we need to erase? + + switch (mode) { - if ( pc == label.end() || *pc == _T('\n') ) - { - len = curLine.length(); - if (len > 0 && - dc.GetPartialTextExtents(curLine, charOffsets)) + case wxELLIPSIZE_START: + initialChar = 0; + for ( nChars=0; + nChars < len && charOffsets[nChars] < excessPixels; + nChars++ ) + ; + break; + + case wxELLIPSIZE_MIDDLE: { - wxASSERT(charOffsets.GetCount() == len); + // the start & end of the removed span of chars + initialChar = len/2; + size_t endChar = len/2; - size_t totalWidth = charOffsets.Last(); - if ( totalWidth > (size_t)maxFinalWidth ) + int removed = 0; + for ( ; removed < excessPixels; ) { - // we need to ellipsize this row - int excessPixels = totalWidth - maxFinalWidth + - replacementWidth + - marginWidth; // security margin (NEEDED!) - - // remove characters in excess - size_t initialChar, // index of first char to erase - nChars; // how many chars do we need to erase? - if (mode == wxELLIPSIZE_START) - { - initialChar = 0; - for (nChars=0; - nChars < len && charOffsets[nChars] < excessPixels; - nChars++) - ; - } - else if (mode == wxELLIPSIZE_MIDDLE) + if (initialChar > 0) { - // the start & end of the removed span of chars - initialChar = len/2; - size_t endChar = len/2; - - int removed = 0; - for ( ; removed < excessPixels; ) - { - if (initialChar > 0) - { - // width of the initialChar-th character - int width = charOffsets[initialChar] - - charOffsets[initialChar-1]; - - // remove the initialChar-th character - removed += width; - initialChar--; - } - - if (endChar < len - 1 && - removed < excessPixels) - { - // width of the (endChar+1)-th character - int width = charOffsets[endChar+1] - - charOffsets[endChar]; - - // remove the endChar-th character - removed += width; - endChar++; - } - - if (initialChar == 0 && endChar == len-1) - { - nChars = len+1; - break; - } - } - - initialChar++; - nChars = endChar - initialChar + 1; + // width of the initialChar-th character + int width = charOffsets[initialChar] - + charOffsets[initialChar-1]; + + // remove the initialChar-th character + removed += width; + initialChar--; } - else + + if (endChar < len - 1 && + removed < excessPixels) { - wxASSERT(mode == wxELLIPSIZE_END); - wxASSERT(len > 0); - - int maxWidth = totalWidth - excessPixels; - for (initialChar=0; - initialChar < len && - charOffsets[initialChar] < maxWidth; - initialChar++) - ; - - if (initialChar == 0) - { - nChars = len; - } - else - { - initialChar--; // go back one character - nChars = len - initialChar; - } + // width of the (endChar+1)-th character + int width = charOffsets[endChar+1] - + charOffsets[endChar]; + + // remove the endChar-th character + removed += width; + endChar++; } - if (nChars > len) + if (initialChar == 0 && endChar == len-1) { - // need to remove the entire row! - curLine.clear(); + nChars = len+1; + break; } - else - { - // erase nChars characters after initialChar (included): - curLine.erase(initialChar, nChars+1); + } - // if there is space for the replacement dots, add them - if (maxFinalWidth > replacementWidth) - curLine.insert(initialChar, wxELLIPSE_REPLACEMENT); - } + initialChar++; + nChars = endChar - initialChar + 1; + } + break; + + case wxELLIPSIZE_END: + { + wxASSERT(len > 0); - // if everything was ok, we should have shortened this line - // enough to make it fit in maxFinalWidth: - wxASSERT(dc.GetTextExtent(curLine).GetWidth() < maxFinalWidth); + int maxWidth = totalWidth - excessPixels; + for ( initialChar = 0; + initialChar < len && charOffsets[initialChar] < maxWidth; + initialChar++ ) + ; + + if (initialChar == 0) + { + nChars = len; + } + else + { + //initialChar--; // go back one character + nChars = len - initialChar; } } + break; + + default: + wxFAIL_MSG("invalid ellipsize mode"); + return curLine; + } + + wxString ret(curLine); + if (nChars >= len) + { + // need to remove the entire row! + ret.clear(); + } + else + { + // erase nChars characters after initialChar (included): + ret.erase(initialChar, nChars+1); + + // if there is space for the replacement dots, add them + if (maxFinalWidth > replacementWidth) + ret.insert(initialChar, wxELLIPSE_REPLACEMENT); + } + + // if everything was ok, we should have shortened this line + // enough to make it fit in maxFinalWidth: + wxASSERT(dc.GetTextExtent(ret).GetWidth() < maxFinalWidth); + + return ret; +} + +/* static */ +wxString wxControlBase::Ellipsize(const wxString& label, const wxDC& dc, + wxEllipsizeMode mode, int maxFinalWidth, + int flags) +{ + wxString ret; + + // these cannot be cached between different Ellipsize() calls as they can + // change because of e.g. a font change; however we calculate them only once + // when ellipsizing multiline labels: + int replacementWidth = dc.GetTextExtent(wxELLIPSE_REPLACEMENT).GetWidth(); + int marginWidth = dc.GetCharWidth(); + + // NB: we must handle correctly labels with newlines: + wxString curLine; + for ( wxString::const_iterator pc = label.begin(); ; ++pc ) + { + if ( pc == label.end() || *pc == wxS('\n') ) + { + curLine = DoEllipsizeSingleLine(curLine, dc, mode, maxFinalWidth, + replacementWidth, marginWidth); // add this (ellipsized) row to the rest of the label ret << curLine; @@ -358,19 +400,19 @@ wxString wxControlBase::Ellipsize(const wxString& label, const wxDC& dc, } } // we need to remove mnemonics from the label for correct calculations - else if ( *pc == _T('&') ) + else if ( *pc == wxS('&') && (flags & wxELLIPSIZE_PROCESS_MNEMONICS) != 0 ) { // pc+1 is safe: at worst we'll be at end() wxString::const_iterator next = pc + 1; - if ( next != label.end() && *next == _T('&') ) - curLine += _T('&'); // && becomes & + if ( next != label.end() && *next == wxS('&') ) + curLine += wxS('&'); // && becomes & //else: remove this ampersand } // we need also to expand tabs to properly calc their size - else if ( *pc == _T('\t') ) + else if ( *pc == wxS('\t') && (flags & wxELLIPSIZE_EXPAND_TAB) != 0 ) { // Windows natively expands the TABs to 6 spaces. Do the same: - curLine += wxT(" "); + curLine += wxS(" "); } else { @@ -384,10 +426,6 @@ wxString wxControlBase::Ellipsize(const wxString& label, const wxDC& dc, //return ret; } -wxBorder wxControlBase::GetDefaultBorder() const -{ - return wxBORDER_THEME; -} // ----------------------------------------------------------------------------