X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b0bdbbfe1113bc414c9da03ad8139535af873b47..1663afc01111eefebd1243035432462ab9a6d2be:/src/html/m_tables.cpp diff --git a/src/html/m_tables.cpp b/src/html/m_tables.cpp index b7ff14f6cb..adc0620081 100644 --- a/src/html/m_tables.cpp +++ b/src/html/m_tables.cpp @@ -47,69 +47,84 @@ FORCE_LINK_ME(m_tables) //----------------------------------------------------------------------------- -typedef struct { - int width, units; - // universal - int leftpos, pixwidth, maxrealwidth; - // temporary (depends on width of table) - } colStruct; - -typedef enum { - cellSpan, - cellUsed, - cellFree - } cellState; - -typedef struct { - wxHtmlContainerCell *cont; - int colspan, rowspan; - int minheight, valign; - cellState flag; - } cellStruct; +struct colStruct +{ + int width, units; + // width of the column either in pixels or percents + // ('width' is the number, 'units' determines its meaning) + int minWidth, maxWidth; + // minimal/maximal column width. This is needed by HTML 4.0 + // layouting algorithm and can be determined by trying to + // layout table cells with width=1 and width=infinity + int leftpos, pixwidth, maxrealwidth; + // temporary (depends on actual width of table) +}; + +enum cellState +{ + cellSpan, + cellUsed, + cellFree +}; + +struct cellStruct +{ + wxHtmlContainerCell *cont; + int colspan, rowspan; + int minheight, valign; + cellState flag; +}; class wxHtmlTableCell : public wxHtmlContainerCell { - protected: - /* These are real attributes: */ - bool m_HasBorders; - // should we draw borders or not? - int m_NumCols, m_NumRows; - // number of columns; rows - colStruct *m_ColsInfo; - // array of column information - cellStruct **m_CellInfo; - // 2D array of all cells in the table : m_CellInfo[row][column] - int m_Spacing; - // spaces between cells - int m_Padding; - // cells internal indentation - - private: - /* ...and these are valid only during parsing of table: */ - int m_ActualCol, m_ActualRow; - // number of actual column (ranging from 0..m_NumCols) - - // default values (for table and row): - wxColour m_tBkg, m_rBkg; - wxString m_tValign, m_rValign; - - double m_PixelScale; - - - public: - wxHtmlTableCell(wxHtmlContainerCell *parent, const wxHtmlTag& tag, double pixel_scale = 1.0); - ~wxHtmlTableCell(); - virtual void Layout(int w); - - void AddRow(const wxHtmlTag& tag); - void AddCell(wxHtmlContainerCell *cell, const wxHtmlTag& tag); - private: - void ReallocCols(int cols); - void ReallocRows(int rows); - // reallocates memory to given number of cols/rows - // and changes m_NumCols/m_NumRows value to reflect this change - // NOTE! You CAN'T change m_NumCols/m_NumRows before calling this!! +protected: + /* These are real attributes: */ + + // should we draw borders or not? + bool m_HasBorders; + // number of columns; rows + int m_NumCols, m_NumRows; + // array of column information + colStruct *m_ColsInfo; + // 2D array of all cells in the table : m_CellInfo[row][column] + cellStruct **m_CellInfo; + // spaces between cells + int m_Spacing; + // cells internal indentation + int m_Padding; + +private: + /* ...and these are valid only when parsing the table: */ + + // number of actual column (ranging from 0..m_NumCols) + int m_ActualCol, m_ActualRow; + + // default values (for table and row): + wxColour m_tBkg, m_rBkg; + wxString m_tValign, m_rValign; + + double m_PixelScale; + + +public: + wxHtmlTableCell(wxHtmlContainerCell *parent, const wxHtmlTag& tag, double pixel_scale = 1.0); + ~wxHtmlTableCell(); + virtual void Layout(int w); + + void AddRow(const wxHtmlTag& tag); + void AddCell(wxHtmlContainerCell *cell, const wxHtmlTag& tag); + +private: + // Reallocates memory to given number of cols/rows + // and changes m_NumCols/m_NumRows value to reflect this change + // NOTE! You CAN'T change m_NumCols/m_NumRows before calling this!! + void ReallocCols(int cols); + void ReallocRows(int rows); + + // Computes minimal and maximal widths of columns. Needs to be called + // only once, before first Layout(). + void ComputeMinMaxWidths(); }; @@ -174,6 +189,7 @@ void wxHtmlTableCell::ReallocCols(int cols) { m_ColsInfo[j].width = 0; m_ColsInfo[j].units = wxHTML_UNITS_PERCENT; + m_ColsInfo[j].minWidth = m_ColsInfo[j].maxWidth = -1; } m_NumCols = cols; @@ -275,7 +291,19 @@ void wxHtmlTableCell::AddCell(wxHtmlContainerCell *cell, const wxHtmlTag& tag) { tag.GetParamAsInt(wxT("COLSPAN"), &m_CellInfo[r][c].colspan); tag.GetParamAsInt(wxT("ROWSPAN"), &m_CellInfo[r][c].rowspan); - if ((m_CellInfo[r][c].colspan != 1) || (m_CellInfo[r][c].rowspan != 1)) + + // VS: the standard says this about col/rowspan: + // "This attribute specifies the number of rows spanned by the + // current cell. The default value of this attribute is one ("1"). + // The value zero ("0") means that the cell spans all rows from the + // current row to the last row of the table." All mainstream + // browsers act as if 0==1, though, and so does wxHTML. + if (m_CellInfo[r][c].colspan < 1) + m_CellInfo[r][c].colspan = 1; + if (m_CellInfo[r][c].rowspan < 1) + m_CellInfo[r][c].rowspan = 1; + + if ((m_CellInfo[r][c].colspan > 1) || (m_CellInfo[r][c].rowspan > 1)) { int i, j; @@ -319,12 +347,44 @@ void wxHtmlTableCell::AddCell(wxHtmlContainerCell *cell, const wxHtmlTag& tag) cell->SetIndent(m_Padding, wxHTML_INDENT_ALL, wxHTML_UNITS_PIXELS); } +void wxHtmlTableCell::ComputeMinMaxWidths() +{ + if (m_NumCols == 0 || m_ColsInfo[0].minWidth != -1) return; + + int left, right, width; - + for (int c = 0; c < m_NumCols; c++) + { + for (int r = 0; r < m_NumRows; r++) + { + cellStruct& cell = m_CellInfo[r][c]; + if (cell.flag == cellUsed) + { + cell.cont->Layout(2*m_Padding + 1); + cell.cont->GetHorizontalConstraints(&left, &right); + width = right - left; + width -= (cell.colspan-1) * m_Spacing; + // HTML 4.0 says it is acceptable to distribute min/max + // width of spanning cells evently + width /= cell.colspan; + for (int j = 0; j < cell.colspan; j++) + if (width > m_ColsInfo[c+j].minWidth) + m_ColsInfo[c+j].minWidth = width; + } + } + } + + // FIXME -- compute maxWidth as well. Not needed yet, so there's no + // point in computing it. +} void wxHtmlTableCell::Layout(int w) { + ComputeMinMaxWidths(); + + wxHtmlCell::Layout(w); + /* WIDTH ADJUSTING : @@ -353,17 +413,25 @@ void wxHtmlTableCell::Layout(int w) { int wpix = m_Width - (m_NumCols + 1) * m_Spacing; int i, j; - int wtemp = 0; // 1a. setup fixed-width columns: for (i = 0; i < m_NumCols; i++) if (m_ColsInfo[i].units == wxHTML_UNITS_PIXELS) - wpix -= (m_ColsInfo[i].pixwidth = m_ColsInfo[i].width); + { + m_ColsInfo[i].pixwidth = wxMax(m_ColsInfo[i].width, + m_ColsInfo[i].minWidth); + wpix -= m_ColsInfo[i].pixwidth; + } // 1b. setup floating-width columns: + int wtemp = 0; for (i = 0; i < m_NumCols; i++) if ((m_ColsInfo[i].units == wxHTML_UNITS_PERCENT) && (m_ColsInfo[i].width != 0)) - wtemp += (m_ColsInfo[i].pixwidth = m_ColsInfo[i].width * wpix / 100); + { + m_ColsInfo[i].pixwidth = wxMax(m_ColsInfo[i].width * wpix / 100, + m_ColsInfo[i].minWidth); + wtemp += m_ColsInfo[i].pixwidth; + } wpix -= wtemp; // 1c. setup defalut columns (no width specification supplied): @@ -475,7 +543,6 @@ TAG_HANDLER_BEGIN(TABLE, "TABLE,TR,TD,TH") { wxHtmlTableCell *oldt = m_Table; wxHtmlContainerCell *oldcont; - int m_OldAlign; oldcont = c = m_WParser->OpenContainer(); @@ -491,12 +558,13 @@ TAG_HANDLER_BEGIN(TABLE, "TABLE,TR,TD,TH") m_WParser->SetAlign(m_OldAlign); m_WParser->SetContainer(oldcont); m_WParser->CloseContainer(); + m_Table = oldt; return TRUE; } - else if (m_Table && !tag.IsEnding()) + else if (m_Table) { // new row in table if (tag.GetName() == wxT("TR"))