src/html/m_tables.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        m_tables.cpp
// Purpose:     wxHtml module for tables
// Author:      Vaclav Slavik
// RCS-ID:      $Id$
// Copyright:   (c) 1999 Vaclav Slavik
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation
#endif

#include "wx/wxprec.h"

#include "wx/defs.h"
#if wxUSE_HTML && wxUSE_STREAMS
#ifdef __BORLANDC__
#pragma hdrstop
#endif

#ifndef WXPRECOMP
#endif

#include "wx/html/forcelnk.h"
#include "wx/html/m_templ.h"

#include "wx/html/htmlcell.h"

FORCE_LINK_ME(m_tables)


#define TABLE_BORDER_CLR_1  wxColour(0xC5, 0xC2, 0xC5)
#define TABLE_BORDER_CLR_2  wxColour(0x62, 0x61, 0x62)


//-----------------------------------------------------------------------------
// wxHtmlTableCell
//-----------------------------------------------------------------------------


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;
    bool nowrap;
};


class wxHtmlTableCell : public wxHtmlContainerCell
{
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();

    DECLARE_NO_COPY_CLASS(wxHtmlTableCell)
};


wxHtmlTableCell::wxHtmlTableCell(wxHtmlContainerCell *parent, const wxHtmlTag& tag, double pixel_scale)
 : wxHtmlContainerCell(parent)
{
    m_PixelScale = pixel_scale;
    m_HasBorders =
            (tag.HasParam(wxT("BORDER")) && tag.GetParam(wxT("BORDER")) != wxT("0"));
    m_ColsInfo = NULL;
    m_NumCols = m_NumRows = 0;
    m_CellInfo = NULL;
    m_ActualCol = m_ActualRow = -1;

    /* scan params: */
    if (tag.HasParam(wxT("BGCOLOR")))
        tag.GetParamAsColour(wxT("BGCOLOR"), &m_tBkg);
    if (tag.HasParam(wxT("VALIGN")))
        m_tValign = tag.GetParam(wxT("VALIGN"));
    else
        m_tValign = wxEmptyString;
    if (!tag.GetParamAsInt(wxT("CELLSPACING"), &m_Spacing))
        m_Spacing = 2;
    if (!tag.GetParamAsInt(wxT("CELLPADDING"), &m_Padding))
        m_Padding = 3;
    m_Spacing = (int)(m_PixelScale * (double)m_Spacing);
    m_Padding = (int)(m_PixelScale * (double)m_Padding);

    if (m_HasBorders)
        SetBorder(TABLE_BORDER_CLR_1, TABLE_BORDER_CLR_2);
}


wxHtmlTableCell::~wxHtmlTableCell()
{
    if (m_ColsInfo) free(m_ColsInfo);
    if (m_CellInfo)
    {
        for (int i = 0; i < m_NumRows; i++)
            free(m_CellInfo[i]);
        free(m_CellInfo);
    }
}


void wxHtmlTableCell::ReallocCols(int cols)
{
    int i,j;

    for (i = 0; i < m_NumRows; i++)
    {
        m_CellInfo[i] = (cellStruct*) realloc(m_CellInfo[i], sizeof(cellStruct) * cols);
        for (j = m_NumCols; j < cols; j++)
            m_CellInfo[i][j].flag = cellFree;
    }

    m_ColsInfo = (colStruct*) realloc(m_ColsInfo, sizeof(colStruct) * cols);
    for (j = m_NumCols; j < cols; j++)
    {
           m_ColsInfo[j].width = 0;
           m_ColsInfo[j].units = wxHTML_UNITS_PERCENT;
           m_ColsInfo[j].minWidth = m_ColsInfo[j].maxWidth = -1;
    }

    m_NumCols = cols;
}


void wxHtmlTableCell::ReallocRows(int rows)
{
    m_CellInfo = (cellStruct**) realloc(m_CellInfo, sizeof(cellStruct*) * rows);
    for (int row = m_NumRows; row < rows ; row++)
    {
        if (m_NumCols == 0)
            m_CellInfo[row] = NULL;
        else
        {
            m_CellInfo[row] = (cellStruct*) malloc(sizeof(cellStruct) * m_NumCols);
            for (int col = 0; col < m_NumCols; col++)
                m_CellInfo[row][col].flag = cellFree;
        }
    }
    m_NumRows = rows;
}


void wxHtmlTableCell::AddRow(const wxHtmlTag& tag)
{
    m_ActualCol = -1;
    // VS: real allocation of row entry is done in AddCell in order
    //     to correctly handle empty rows (i.e. "<tr></tr>")
    //     m_ActualCol == -1 indicates that AddCell has to allocate new row.

    // scan params:
    m_rBkg = m_tBkg;
    if (tag.HasParam(wxT("BGCOLOR")))
        tag.GetParamAsColour(wxT("BGCOLOR"), &m_rBkg);
    if (tag.HasParam(wxT("VALIGN")))
        m_rValign = tag.GetParam(wxT("VALIGN"));
    else
        m_rValign = m_tValign;
}


void wxHtmlTableCell::AddCell(wxHtmlContainerCell *cell, const wxHtmlTag& tag)
{
    // Is this cell in new row?
    // VS: we can't do it in AddRow, see my comment there
    if (m_ActualCol == -1)
    {
        if (m_ActualRow + 1 > m_NumRows - 1)
            ReallocRows(m_ActualRow + 2);
        m_ActualRow++;
    }

    // cells & columns:
    do
    {
        m_ActualCol++;
    } while ((m_ActualCol < m_NumCols) &&
             (m_CellInfo[m_ActualRow][m_ActualCol].flag != cellFree));

    if (m_ActualCol > m_NumCols - 1)
        ReallocCols(m_ActualCol + 1);

    int r = m_ActualRow, c = m_ActualCol;

    m_CellInfo[r][c].cont = cell;
    m_CellInfo[r][c].colspan = 1;
    m_CellInfo[r][c].rowspan = 1;
    m_CellInfo[r][c].flag = cellUsed;
    m_CellInfo[r][c].minheight = 0;
    m_CellInfo[r][c].valign = wxHTML_ALIGN_TOP;

    /* scan for parameters: */

    // width:
    {
        if (tag.HasParam(wxT("WIDTH")))
        {
            wxString wd = tag.GetParam(wxT("WIDTH"));

            if (wd[wd.Length()-1] == wxT('%'))
            {
                wxSscanf(wd.c_str(), wxT("%i%%"), &m_ColsInfo[c].width);
                m_ColsInfo[c].units = wxHTML_UNITS_PERCENT;
            }
            else
            {
                wxSscanf(wd.c_str(), wxT("%i"), &m_ColsInfo[c].width);
                m_ColsInfo[c].width = (int)(m_PixelScale * (double)m_ColsInfo[c].width);
                m_ColsInfo[c].units = wxHTML_UNITS_PIXELS;
            }
        }
    }


    // spanning:
    {
        tag.GetParamAsInt(wxT("COLSPAN"), &m_CellInfo[r][c].colspan);
        tag.GetParamAsInt(wxT("ROWSPAN"), &m_CellInfo[r][c].rowspan);

        // 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;

            if (r + m_CellInfo[r][c].rowspan > m_NumRows)
                ReallocRows(r + m_CellInfo[r][c].rowspan);
            if (c + m_CellInfo[r][c].colspan > m_NumCols)
                ReallocCols(c + m_CellInfo[r][c].colspan);
            for (i = r; i < r + m_CellInfo[r][c].rowspan; i++)
                for (j = c; j < c + m_CellInfo[r][c].colspan; j++)
                    m_CellInfo[i][j].flag = cellSpan;
            m_CellInfo[r][c].flag = cellUsed;
        }
    }

    //background color:
    {
        wxColour bk = m_rBkg;
        if (tag.HasParam(wxT("BGCOLOR")))
            tag.GetParamAsColour(wxT("BGCOLOR"), &bk);
        if (bk.Ok())
            cell->SetBackgroundColour(bk);
    }
    if (m_HasBorders)
        cell->SetBorder(TABLE_BORDER_CLR_2, TABLE_BORDER_CLR_1);

    // vertical alignment:
    {
        wxString valign;
        if (tag.HasParam(wxT("VALIGN")))
            valign = tag.GetParam(wxT("VALIGN"));
        else
            valign = m_tValign;
        valign.MakeUpper();
        if (valign == wxT("TOP"))
            m_CellInfo[r][c].valign = wxHTML_ALIGN_TOP;
        else if (valign == wxT("BOTTOM"))
            m_CellInfo[r][c].valign = wxHTML_ALIGN_BOTTOM;
        else m_CellInfo[r][c].valign = wxHTML_ALIGN_CENTER;
    }

    // nowrap
    if (tag.HasParam(wxT("NOWRAP")))
        m_CellInfo[r][c].nowrap = true;
    else
        m_CellInfo[r][c].nowrap = false;

    cell->SetIndent(m_Padding, wxHTML_INDENT_ALL, wxHTML_UNITS_PIXELS);
}

void wxHtmlTableCell::ComputeMinMaxWidths()
{
    if (m_NumCols == 0 || m_ColsInfo[0].minWidth != -1) return;

    m_MaxTotalWidth = 0;
    int percentage = 0;
    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);
                int maxWidth = cell.cont->GetMaxTotalWidth();
                int width = cell.nowrap?maxWidth:cell.cont->GetWidth();
                width -= (cell.colspan-1) * m_Spacing;
                maxWidth -= (cell.colspan-1) * m_Spacing;
                // HTML 4.0 says it is acceptable to distribute min/max
                width /= cell.colspan;
                maxWidth /= cell.colspan;
                for (int j = 0; j < cell.colspan; j++) {
                    if (width > m_ColsInfo[c+j].minWidth)
                        m_ColsInfo[c+j].minWidth = width;
                    if (maxWidth > m_ColsInfo[c+j].maxWidth)
                        m_ColsInfo[c+j].maxWidth = maxWidth;
                }
            }
        }
        // Calculate maximum table width, required for nested tables
        if (m_ColsInfo[c].units == wxHTML_UNITS_PIXELS)
            m_MaxTotalWidth += wxMax(m_ColsInfo[c].width, m_ColsInfo[c].minWidth);
        else if ((m_ColsInfo[c].units == wxHTML_UNITS_PERCENT) && (m_ColsInfo[c].width != 0))
            percentage += m_ColsInfo[c].width;
        else
            m_MaxTotalWidth += m_ColsInfo[c].maxWidth;
    }

    if (percentage >= 100)
    {
        // Table would have infinite length
        // Make it ridiculous large
        m_MaxTotalWidth = 0xFFFFFF;
    }
    else
        m_MaxTotalWidth = m_MaxTotalWidth * 100 / (100 - percentage);

    m_MaxTotalWidth += (m_NumCols + 1) * m_Spacing;
}

void wxHtmlTableCell::Layout(int w)
{
    ComputeMinMaxWidths();

    wxHtmlCell::Layout(w);

    /*

    WIDTH ADJUSTING :

    */

    if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT)
    {
        if (m_WidthFloat < 0)
        {
            if (m_WidthFloat < -100)
                m_WidthFloat = -100;
            m_Width = (100 + m_WidthFloat) * w / 100;
        }
        else
        {
            if (m_WidthFloat > 100)
                m_WidthFloat = 100;
            m_Width = m_WidthFloat * w / 100;
        }
    }
    else
    {
        if (m_WidthFloat < 0) m_Width = w + m_WidthFloat;
        else m_Width = m_WidthFloat;
    }


    /*

    LAYOUTING :

    */

    /* 1.  setup columns widths:

           The algorithm tries to keep the table size less than w if possible.
       */
    {
        int wpix = m_Width - (m_NumCols + 1) * m_Spacing;
        int i, j;

        // 1a. setup fixed-width columns:
        for (i = 0; i < m_NumCols; i++)
            if (m_ColsInfo[i].units == wxHTML_UNITS_PIXELS)
            {
                m_ColsInfo[i].pixwidth = wxMax(m_ColsInfo[i].width,
                                               m_ColsInfo[i].minWidth);
                wpix -= m_ColsInfo[i].pixwidth;
            }

        // 1b. Calculate maximum possible width if line wrapping would be disabled
        // Recalculate total width if m_WidthFloat is zero to keep tables as small
        // as possible.
        int maxWidth = 0;
        for (i = 0; i < m_NumCols; i++)
            if (m_ColsInfo[i].width == 0)
            {
                maxWidth += m_ColsInfo[i].maxWidth;
            }

        if (!m_WidthFloat)
        {
            // Recalculate table width since no table width was initially given
            int newWidth = m_Width - wpix +  maxWidth;

            // Make sure that floating-width columns will have the right size.
            // Calculate sum of all floating-width columns
            int percentage = 0;
            for (i = 0; i < m_NumCols; i++)
                if ((m_ColsInfo[i].units == wxHTML_UNITS_PERCENT) && (m_ColsInfo[i].width != 0))
                    percentage += m_ColsInfo[i].width;

            if (percentage >= 100)
                newWidth = w;
            else
                newWidth = newWidth * 100 / (100 - percentage);

            newWidth = wxMin(newWidth, w - (m_NumCols + 1) * m_Spacing);
            wpix -= m_Width - newWidth;
            m_Width = newWidth;
        }


        // 1c. setup floating-width columns:
        int wtemp = wpix;
        for (i = 0; i < m_NumCols; i++)
            if ((m_ColsInfo[i].units == wxHTML_UNITS_PERCENT) && (m_ColsInfo[i].width != 0))
            {
                m_ColsInfo[i].pixwidth = wxMin(m_ColsInfo[i].width, 100) * wpix / 100;

                // Make sure to leave enough space for the other columns
                int minRequired = 0;
                for (j = 0; j < m_NumCols; j++)
                {
                    if ((m_ColsInfo[j].units == wxHTML_UNITS_PERCENT && j > i) ||
                        !m_ColsInfo[j].width)
                        minRequired += m_ColsInfo[j].minWidth;
                }
                m_ColsInfo[i].pixwidth = wxMax(wxMin(wtemp - minRequired, m_ColsInfo[i].pixwidth), m_ColsInfo[i].minWidth);

                wtemp -= m_ColsInfo[i].pixwidth;
            }
        wpix = wtemp;

        // 1d. setup default columns (no width specification supplied):
        // The algorithm assigns calculates the maximum possible width if line
        // wrapping would be disabled and assigns column width as a fraction
        // based upon the maximum width of a column
        // FIXME: I'm not sure if this algorithm is conform to HTML standard,
        //        though it seems to be much better than the old one

        for (i = j = 0; i < m_NumCols; i++)
            if (m_ColsInfo[i].width == 0) j++;
        if (wpix < 0)
            wpix = 0;

        // Assign widths
        for (i = 0; i < m_NumCols; i++)
            if (m_ColsInfo[i].width == 0)
            {
                // Assign with, make sure not to drop below minWidth
                if (maxWidth)
                    m_ColsInfo[i].pixwidth = (int)(wpix * (m_ColsInfo[i].maxWidth / (float)maxWidth) + 0.5);
                else
                    m_ColsInfo[i].pixwidth = wpix / j;

                // Make sure to leave enough space for the other columns
                int minRequired = 0;
                int r;
                for (r = i + 1; r < m_NumCols; r++)
                {
                    if (!m_ColsInfo[r].width)
                        minRequired += m_ColsInfo[r].minWidth;
                }
                m_ColsInfo[i].pixwidth = wxMax(wxMin(wpix - minRequired, m_ColsInfo[i].pixwidth), m_ColsInfo[i].minWidth);

                if (maxWidth)
                {
                    if (m_ColsInfo[i].pixwidth > (wpix * (m_ColsInfo[i].maxWidth / (float)maxWidth) + 0.5))
                    {
                        int diff = (int)(m_ColsInfo[i].pixwidth - (wpix * m_ColsInfo[i].maxWidth / (float)maxWidth + 0.5));
                        maxWidth += diff - m_ColsInfo[i].maxWidth;
                    }
                    else
                        maxWidth -= m_ColsInfo[i].maxWidth;
                }
                wpix -= m_ColsInfo[i].pixwidth;
            }
    }

    /* 2.  compute positions of columns: */
    {
        int wpos = m_Spacing;
        for (int i = 0; i < m_NumCols; i++)
        {
            m_ColsInfo[i].leftpos = wpos;
            wpos += m_ColsInfo[i].pixwidth + m_Spacing;
        }
    }

    /* 3.  sub-layout all cells: */
    {
        int *ypos = new int[m_NumRows + 1];

        int actcol, actrow;
        int fullwid;
        wxHtmlContainerCell *actcell;

        ypos[0] = m_Spacing;
        for (actrow = 1; actrow <= m_NumRows; actrow++) ypos[actrow] = -1;
        for (actrow = 0; actrow < m_NumRows; actrow++)
        {
            if (ypos[actrow] == -1) ypos[actrow] = ypos[actrow-1];
            // 3a. sub-layout and detect max height:

            for (actcol = 0; actcol < m_NumCols; actcol++) {
                if (m_CellInfo[actrow][actcol].flag != cellUsed) continue;
                actcell = m_CellInfo[actrow][actcol].cont;
                fullwid = 0;
                for (int i = actcol; i < m_CellInfo[actrow][actcol].colspan + actcol; i++)
                    fullwid += m_ColsInfo[i].pixwidth;
                fullwid += (m_CellInfo[actrow][actcol].colspan - 1) * m_Spacing;
                actcell->SetMinHeight(m_CellInfo[actrow][actcol].minheight, m_CellInfo[actrow][actcol].valign);
                actcell->Layout(fullwid);

                if (ypos[actrow] + actcell->GetHeight() + m_CellInfo[actrow][actcol].rowspan * m_Spacing > ypos[actrow + m_CellInfo[actrow][actcol].rowspan])
                    ypos[actrow + m_CellInfo[actrow][actcol].rowspan] =
                            ypos[actrow] + actcell->GetHeight() + m_CellInfo[actrow][actcol].rowspan * m_Spacing;
            }
        }

        for (actrow = 0; actrow < m_NumRows; actrow++)
        {
            // 3b. place cells in row & let'em all have same height:

            for (actcol = 0; actcol < m_NumCols; actcol++)
            {
                if (m_CellInfo[actrow][actcol].flag != cellUsed) continue;
                actcell = m_CellInfo[actrow][actcol].cont;
                actcell->SetMinHeight(
                                 ypos[actrow + m_CellInfo[actrow][actcol].rowspan] - ypos[actrow] -  m_Spacing,
                                 m_CellInfo[actrow][actcol].valign);
                fullwid = 0;
                for (int i = actcol; i < m_CellInfo[actrow][actcol].colspan + actcol; i++)
                    fullwid += m_ColsInfo[i].pixwidth;
                fullwid += (m_CellInfo[actrow][actcol].colspan - 1) * m_Spacing;
                actcell->Layout(fullwid);
                actcell->SetPos(m_ColsInfo[actcol].leftpos, ypos[actrow]);
            }
        }
        m_Height = ypos[m_NumRows];
        delete[] ypos;
    }

    /* 4. adjust table's width if it was too small: */
    if (m_NumCols > 0)
    {
        int twidth = m_ColsInfo[m_NumCols-1].leftpos +
                     m_ColsInfo[m_NumCols-1].pixwidth + m_Spacing;
        if (twidth > m_Width)
            m_Width = twidth;
    }
}


//-----------------------------------------------------------------------------
// The tables handler:
//-----------------------------------------------------------------------------


TAG_HANDLER_BEGIN(TABLE, "TABLE,TR,TD,TH")

    TAG_HANDLER_VARS
        wxHtmlTableCell* m_Table;
        wxString m_tAlign, m_rAlign;

    TAG_HANDLER_CONSTR(TABLE)
    {
        m_Table = NULL;
        m_tAlign = m_rAlign = wxEmptyString;
    }


    TAG_HANDLER_PROC(tag)
    {
        wxHtmlContainerCell *c;

        // new table started, backup upper-level table (if any) and create new:
        if (tag.GetName() == wxT("TABLE"))
        {
            wxHtmlTableCell *oldt = m_Table;
            wxHtmlContainerCell *oldcont;

            oldcont = c = m_WParser->OpenContainer();

            m_Table = new wxHtmlTableCell(c, tag);

            // width:
            {
                if (tag.HasParam(wxT("WIDTH")))
                {
                    wxString wd = tag.GetParam(wxT("WIDTH"));

                    if (wd[wd.Length()-1] == wxT('%'))
                    {
                        int width = 0;
                        wxSscanf(wd.c_str(), wxT("%i%%"), &width);
                        m_Table->SetWidthFloat(width, wxHTML_UNITS_PERCENT);
                    }
                    else
                    {
                        int width = 0;
                        wxSscanf(wd.c_str(), wxT("%i"), &width);
                        m_Table->SetWidthFloat((int)(m_WParser->GetPixelScale() * width), wxHTML_UNITS_PIXELS);
                    }
                }
                else
                    m_Table->SetWidthFloat(0, wxHTML_UNITS_PIXELS);
            }
            int oldAlign = m_WParser->GetAlign();
            m_tAlign = wxEmptyString;
            if (tag.HasParam(wxT("ALIGN")))
                m_tAlign = tag.GetParam(wxT("ALIGN"));

            ParseInner(tag);

            m_WParser->SetAlign(oldAlign);
            m_WParser->SetContainer(oldcont);
            m_WParser->CloseContainer();

            m_Table = oldt;
            return TRUE;
        }


        else if (m_Table)
        {
            // new row in table
            if (tag.GetName() == wxT("TR"))
            {
                m_Table->AddRow(tag);
                m_rAlign = m_tAlign;
                if (tag.HasParam(wxT("ALIGN")))
                    m_rAlign = tag.GetParam(wxT("ALIGN"));
            }

            // new cell
            else
            {
                c = m_WParser->SetContainer(new wxHtmlContainerCell(m_Table));
                m_Table->AddCell(c, tag);

                m_WParser->OpenContainer();

                if (tag.GetName() == wxT("TH")) /*header style*/
                    m_WParser->SetAlign(wxHTML_ALIGN_CENTER);
                else
                    m_WParser->SetAlign(wxHTML_ALIGN_LEFT);

                wxString als;

                als = m_rAlign;
                if (tag.HasParam(wxT("ALIGN")))
                    als = tag.GetParam(wxT("ALIGN"));
                als.MakeUpper();
                if (als == wxT("RIGHT"))
                    m_WParser->SetAlign(wxHTML_ALIGN_RIGHT);
                else if (als == wxT("LEFT"))
                    m_WParser->SetAlign(wxHTML_ALIGN_LEFT);
                else if (als == wxT("CENTER"))
                    m_WParser->SetAlign(wxHTML_ALIGN_CENTER);

                m_WParser->OpenContainer();
            }
        }
        return FALSE;
    }

TAG_HANDLER_END(TABLE)


TAGS_MODULE_BEGIN(Tables)

    TAGS_MODULE_ADD(TABLE)

TAGS_MODULE_END(Tables)


#endif
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: m_tables.cpp
	3	// Purpose: wxHtml module for tables
	4	// Author: Vaclav Slavik
	5	// RCS-ID: $Id$
	6	// Copyright: (c) 1999 Vaclav Slavik
	7	// Licence: wxWindows licence
	8	/////////////////////////////////////////////////////////////////////////////
	9
	10	#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
	11	#pragma implementation
	12	#endif
	13
	14	#include "wx/wxprec.h"
	15
	16	#include "wx/defs.h"
	17	#if wxUSE_HTML && wxUSE_STREAMS
	18	#ifdef __BORLANDC__
	19	#pragma hdrstop
	20	#endif
	21
	22	#ifndef WXPRECOMP
	23	#endif
	24
	25	#include "wx/html/forcelnk.h"
	26	#include "wx/html/m_templ.h"
	27
	28	#include "wx/html/htmlcell.h"
	29
	30	FORCE_LINK_ME(m_tables)
	31
	32
	33	#define TABLE_BORDER_CLR_1 wxColour(0xC5, 0xC2, 0xC5)
	34	#define TABLE_BORDER_CLR_2 wxColour(0x62, 0x61, 0x62)
	35
	36
	37	//-----------------------------------------------------------------------------
	38	// wxHtmlTableCell
	39	//-----------------------------------------------------------------------------
	40
	41
	42	struct colStruct
	43	{
	44	int width, units;
	45	// width of the column either in pixels or percents
	46	// ('width' is the number, 'units' determines its meaning)
	47	int minWidth, maxWidth;
	48	// minimal/maximal column width. This is needed by HTML 4.0
	49	// layouting algorithm and can be determined by trying to
	50	// layout table cells with width=1 and width=infinity
	51	int leftpos, pixwidth, maxrealwidth;
	52	// temporary (depends on actual width of table)
	53	};
	54
	55	enum cellState
	56	{
	57	cellSpan,
	58	cellUsed,
	59	cellFree
	60	};
	61
	62	struct cellStruct
	63	{
	64	wxHtmlContainerCell *cont;
	65	int colspan, rowspan;
	66	int minheight, valign;
	67	cellState flag;
	68	bool nowrap;
	69	};
	70
	71
	72	class wxHtmlTableCell : public wxHtmlContainerCell
	73	{
	74	protected:
	75	/* These are real attributes: */
	76
	77	// should we draw borders or not?
	78	bool m_HasBorders;
	79	// number of columns; rows
	80	int m_NumCols, m_NumRows;
	81	// array of column information
	82	colStruct *m_ColsInfo;
	83	// 2D array of all cells in the table : m_CellInfo[row][column]
	84	cellStruct **m_CellInfo;
	85	// spaces between cells
	86	int m_Spacing;
	87	// cells internal indentation
	88	int m_Padding;
	89
	90	private:
	91	/* ...and these are valid only when parsing the table: */
	92
	93	// number of actual column (ranging from 0..m_NumCols)
	94	int m_ActualCol, m_ActualRow;
	95
	96	// default values (for table and row):
	97	wxColour m_tBkg, m_rBkg;
	98	wxString m_tValign, m_rValign;
	99
	100	double m_PixelScale;
	101
	102
	103	public:
	104	wxHtmlTableCell(wxHtmlContainerCell *parent, const wxHtmlTag& tag, double pixel_scale = 1.0);
	105	~wxHtmlTableCell();
	106	virtual void Layout(int w);
	107
	108	void AddRow(const wxHtmlTag& tag);
	109	void AddCell(wxHtmlContainerCell *cell, const wxHtmlTag& tag);
	110
	111	private:
	112	// Reallocates memory to given number of cols/rows
	113	// and changes m_NumCols/m_NumRows value to reflect this change
	114	// NOTE! You CAN'T change m_NumCols/m_NumRows before calling this!!
	115	void ReallocCols(int cols);
	116	void ReallocRows(int rows);
	117
	118	// Computes minimal and maximal widths of columns. Needs to be called
	119	// only once, before first Layout().
	120	void ComputeMinMaxWidths();
	121
	122	DECLARE_NO_COPY_CLASS(wxHtmlTableCell)
	123	};
	124
	125
	126
	127	wxHtmlTableCell::wxHtmlTableCell(wxHtmlContainerCell *parent, const wxHtmlTag& tag, double pixel_scale)
	128	: wxHtmlContainerCell(parent)
	129	{
	130	m_PixelScale = pixel_scale;
	131	m_HasBorders =
	132	(tag.HasParam(wxT("BORDER")) && tag.GetParam(wxT("BORDER")) != wxT("0"));
	133	m_ColsInfo = NULL;
	134	m_NumCols = m_NumRows = 0;
	135	m_CellInfo = NULL;
	136	m_ActualCol = m_ActualRow = -1;
	137
	138	/* scan params: */
	139	if (tag.HasParam(wxT("BGCOLOR")))
	140	tag.GetParamAsColour(wxT("BGCOLOR"), &m_tBkg);
	141	if (tag.HasParam(wxT("VALIGN")))
	142	m_tValign = tag.GetParam(wxT("VALIGN"));
	143	else
	144	m_tValign = wxEmptyString;
	145	if (!tag.GetParamAsInt(wxT("CELLSPACING"), &m_Spacing))
	146	m_Spacing = 2;
	147	if (!tag.GetParamAsInt(wxT("CELLPADDING"), &m_Padding))
	148	m_Padding = 3;
	149	m_Spacing = (int)(m_PixelScale * (double)m_Spacing);
	150	m_Padding = (int)(m_PixelScale * (double)m_Padding);
	151
	152	if (m_HasBorders)
	153	SetBorder(TABLE_BORDER_CLR_1, TABLE_BORDER_CLR_2);
	154	}
	155
	156
	157
	158	wxHtmlTableCell::~wxHtmlTableCell()
	159	{
	160	if (m_ColsInfo) free(m_ColsInfo);
	161	if (m_CellInfo)
	162	{
	163	for (int i = 0; i < m_NumRows; i++)
	164	free(m_CellInfo[i]);
	165	free(m_CellInfo);
	166	}
	167	}
	168
	169
	170
	171	void wxHtmlTableCell::ReallocCols(int cols)
	172	{
	173	int i,j;
	174
	175	for (i = 0; i < m_NumRows; i++)
	176	{
	177	m_CellInfo[i] = (cellStruct) realloc(m_CellInfo[i], sizeof(cellStruct) cols);
	178	for (j = m_NumCols; j < cols; j++)
	179	m_CellInfo[i][j].flag = cellFree;
	180	}
	181
	182	m_ColsInfo = (colStruct) realloc(m_ColsInfo, sizeof(colStruct) cols);
	183	for (j = m_NumCols; j < cols; j++)
	184	{
	185	m_ColsInfo[j].width = 0;
	186	m_ColsInfo[j].units = wxHTML_UNITS_PERCENT;
	187	m_ColsInfo[j].minWidth = m_ColsInfo[j].maxWidth = -1;
	188	}
	189
	190	m_NumCols = cols;
	191	}
	192
	193
	194
	195	void wxHtmlTableCell::ReallocRows(int rows)
	196	{
	197	m_CellInfo = (cellStruct*) realloc(m_CellInfo, sizeof(cellStruct) * rows);
	198	for (int row = m_NumRows; row < rows ; row++)
	199	{
	200	if (m_NumCols == 0)
	201	m_CellInfo[row] = NULL;
	202	else
	203	{
	204	m_CellInfo[row] = (cellStruct) malloc(sizeof(cellStruct) m_NumCols);
	205	for (int col = 0; col < m_NumCols; col++)
	206	m_CellInfo[row][col].flag = cellFree;
	207	}
	208	}
	209	m_NumRows = rows;
	210	}
	211
	212
	213	void wxHtmlTableCell::AddRow(const wxHtmlTag& tag)
	214	{
	215	m_ActualCol = -1;
	216	// VS: real allocation of row entry is done in AddCell in order
	217	// to correctly handle empty rows (i.e. "<tr></tr>")
	218	// m_ActualCol == -1 indicates that AddCell has to allocate new row.
	219
	220	// scan params:
	221	m_rBkg = m_tBkg;
	222	if (tag.HasParam(wxT("BGCOLOR")))
	223	tag.GetParamAsColour(wxT("BGCOLOR"), &m_rBkg);
	224	if (tag.HasParam(wxT("VALIGN")))
	225	m_rValign = tag.GetParam(wxT("VALIGN"));
	226	else
	227	m_rValign = m_tValign;
	228	}
	229
	230
	231
	232	void wxHtmlTableCell::AddCell(wxHtmlContainerCell *cell, const wxHtmlTag& tag)
	233	{
	234	// Is this cell in new row?
	235	// VS: we can't do it in AddRow, see my comment there
	236	if (m_ActualCol == -1)
	237	{
	238	if (m_ActualRow + 1 > m_NumRows - 1)
	239	ReallocRows(m_ActualRow + 2);
	240	m_ActualRow++;
	241	}
	242
	243	// cells & columns:
	244	do
	245	{
	246	m_ActualCol++;
	247	} while ((m_ActualCol < m_NumCols) &&
	248	(m_CellInfo[m_ActualRow][m_ActualCol].flag != cellFree));
	249
	250	if (m_ActualCol > m_NumCols - 1)
	251	ReallocCols(m_ActualCol + 1);
	252
	253	int r = m_ActualRow, c = m_ActualCol;
	254
	255	m_CellInfo[r][c].cont = cell;
	256	m_CellInfo[r][c].colspan = 1;
	257	m_CellInfo[r][c].rowspan = 1;
	258	m_CellInfo[r][c].flag = cellUsed;
	259	m_CellInfo[r][c].minheight = 0;
	260	m_CellInfo[r][c].valign = wxHTML_ALIGN_TOP;
	261
	262	/* scan for parameters: */
	263
	264	// width:
	265	{
	266	if (tag.HasParam(wxT("WIDTH")))
	267	{
	268	wxString wd = tag.GetParam(wxT("WIDTH"));
	269
	270	if (wd[wd.Length()-1] == wxT('%'))
	271	{
	272	wxSscanf(wd.c_str(), wxT("%i%%"), &m_ColsInfo[c].width);
	273	m_ColsInfo[c].units = wxHTML_UNITS_PERCENT;
	274	}
	275	else
	276	{
	277	wxSscanf(wd.c_str(), wxT("%i"), &m_ColsInfo[c].width);
	278	m_ColsInfo[c].width = (int)(m_PixelScale * (double)m_ColsInfo[c].width);
	279	m_ColsInfo[c].units = wxHTML_UNITS_PIXELS;
	280	}
	281	}
	282	}
	283
	284
	285	// spanning:
	286	{
	287	tag.GetParamAsInt(wxT("COLSPAN"), &m_CellInfo[r][c].colspan);
	288	tag.GetParamAsInt(wxT("ROWSPAN"), &m_CellInfo[r][c].rowspan);
	289
	290	// VS: the standard says this about col/rowspan:
	291	// "This attribute specifies the number of rows spanned by the
	292	// current cell. The default value of this attribute is one ("1").
	293	// The value zero ("0") means that the cell spans all rows from the
	294	// current row to the last row of the table." All mainstream
	295	// browsers act as if 0==1, though, and so does wxHTML.
	296	if (m_CellInfo[r][c].colspan < 1)
	297	m_CellInfo[r][c].colspan = 1;
	298	if (m_CellInfo[r][c].rowspan < 1)
	299	m_CellInfo[r][c].rowspan = 1;
	300
	301	if ((m_CellInfo[r][c].colspan > 1) \|\| (m_CellInfo[r][c].rowspan > 1))
	302	{
	303	int i, j;
	304
	305	if (r + m_CellInfo[r][c].rowspan > m_NumRows)
	306	ReallocRows(r + m_CellInfo[r][c].rowspan);
	307	if (c + m_CellInfo[r][c].colspan > m_NumCols)
	308	ReallocCols(c + m_CellInfo[r][c].colspan);
	309	for (i = r; i < r + m_CellInfo[r][c].rowspan; i++)
	310	for (j = c; j < c + m_CellInfo[r][c].colspan; j++)
	311	m_CellInfo[i][j].flag = cellSpan;
	312	m_CellInfo[r][c].flag = cellUsed;
	313	}
	314	}
	315
	316	//background color:
	317	{
	318	wxColour bk = m_rBkg;
	319	if (tag.HasParam(wxT("BGCOLOR")))
	320	tag.GetParamAsColour(wxT("BGCOLOR"), &bk);
	321	if (bk.Ok())
	322	cell->SetBackgroundColour(bk);
	323	}
	324	if (m_HasBorders)
	325	cell->SetBorder(TABLE_BORDER_CLR_2, TABLE_BORDER_CLR_1);
	326
	327	// vertical alignment:
	328	{
	329	wxString valign;
	330	if (tag.HasParam(wxT("VALIGN")))
	331	valign = tag.GetParam(wxT("VALIGN"));
	332	else
	333	valign = m_tValign;
	334	valign.MakeUpper();
	335	if (valign == wxT("TOP"))
	336	m_CellInfo[r][c].valign = wxHTML_ALIGN_TOP;
	337	else if (valign == wxT("BOTTOM"))
	338	m_CellInfo[r][c].valign = wxHTML_ALIGN_BOTTOM;
	339	else m_CellInfo[r][c].valign = wxHTML_ALIGN_CENTER;
	340	}
	341
	342	// nowrap
	343	if (tag.HasParam(wxT("NOWRAP")))
	344	m_CellInfo[r][c].nowrap = true;
	345	else
	346	m_CellInfo[r][c].nowrap = false;
	347
	348	cell->SetIndent(m_Padding, wxHTML_INDENT_ALL, wxHTML_UNITS_PIXELS);
	349	}
	350
	351	void wxHtmlTableCell::ComputeMinMaxWidths()
	352	{
	353	if (m_NumCols == 0 \|\| m_ColsInfo[0].minWidth != -1) return;
	354
	355	m_MaxTotalWidth = 0;
	356	int percentage = 0;
	357	for (int c = 0; c < m_NumCols; c++)
	358	{
	359	for (int r = 0; r < m_NumRows; r++)
	360	{
	361	cellStruct& cell = m_CellInfo[r][c];
	362	if (cell.flag == cellUsed)
	363	{
	364	cell.cont->Layout(2*m_Padding + 1);
	365	int maxWidth = cell.cont->GetMaxTotalWidth();
	366	int width = cell.nowrap?maxWidth:cell.cont->GetWidth();
	367	width -= (cell.colspan-1) * m_Spacing;
	368	maxWidth -= (cell.colspan-1) * m_Spacing;
	369	// HTML 4.0 says it is acceptable to distribute min/max
	370	width /= cell.colspan;
	371	maxWidth /= cell.colspan;
	372	for (int j = 0; j < cell.colspan; j++) {
	373	if (width > m_ColsInfo[c+j].minWidth)
	374	m_ColsInfo[c+j].minWidth = width;
	375	if (maxWidth > m_ColsInfo[c+j].maxWidth)
	376	m_ColsInfo[c+j].maxWidth = maxWidth;
	377	}
	378	}
	379	}
	380	// Calculate maximum table width, required for nested tables
	381	if (m_ColsInfo[c].units == wxHTML_UNITS_PIXELS)
	382	m_MaxTotalWidth += wxMax(m_ColsInfo[c].width, m_ColsInfo[c].minWidth);
	383	else if ((m_ColsInfo[c].units == wxHTML_UNITS_PERCENT) && (m_ColsInfo[c].width != 0))
	384	percentage += m_ColsInfo[c].width;
	385	else
	386	m_MaxTotalWidth += m_ColsInfo[c].maxWidth;
	387	}
	388
	389	if (percentage >= 100)
	390	{
	391	// Table would have infinite length
	392	// Make it ridiculous large
	393	m_MaxTotalWidth = 0xFFFFFF;
	394	}
	395	else
	396	m_MaxTotalWidth = m_MaxTotalWidth * 100 / (100 - percentage);
	397
	398	m_MaxTotalWidth += (m_NumCols + 1) * m_Spacing;
	399	}
	400
	401	void wxHtmlTableCell::Layout(int w)
	402	{
	403	ComputeMinMaxWidths();
	404
	405	wxHtmlCell::Layout(w);
	406
	407	/*
	408
	409	WIDTH ADJUSTING :
	410
	411	*/
	412
	413	if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT)
	414	{
	415	if (m_WidthFloat < 0)
	416	{
	417	if (m_WidthFloat < -100)
	418	m_WidthFloat = -100;
	419	m_Width = (100 + m_WidthFloat) * w / 100;
	420	}
	421	else
	422	{
	423	if (m_WidthFloat > 100)
	424	m_WidthFloat = 100;
	425	m_Width = m_WidthFloat * w / 100;
	426	}
	427	}
	428	else
	429	{
	430	if (m_WidthFloat < 0) m_Width = w + m_WidthFloat;
	431	else m_Width = m_WidthFloat;
	432	}
	433
	434
	435	/*
	436
	437	LAYOUTING :
	438
	439	*/
	440
	441	/* 1. setup columns widths:
	442
	443	The algorithm tries to keep the table size less than w if possible.
	444	*/
	445	{
	446	int wpix = m_Width - (m_NumCols + 1) * m_Spacing;
	447	int i, j;
	448
	449	// 1a. setup fixed-width columns:
	450	for (i = 0; i < m_NumCols; i++)
	451	if (m_ColsInfo[i].units == wxHTML_UNITS_PIXELS)
	452	{
	453	m_ColsInfo[i].pixwidth = wxMax(m_ColsInfo[i].width,
	454	m_ColsInfo[i].minWidth);
	455	wpix -= m_ColsInfo[i].pixwidth;
	456	}
	457
	458	// 1b. Calculate maximum possible width if line wrapping would be disabled
	459	// Recalculate total width if m_WidthFloat is zero to keep tables as small
	460	// as possible.
	461	int maxWidth = 0;
	462	for (i = 0; i < m_NumCols; i++)
	463	if (m_ColsInfo[i].width == 0)
	464	{
	465	maxWidth += m_ColsInfo[i].maxWidth;
	466	}
	467
	468	if (!m_WidthFloat)
	469	{
	470	// Recalculate table width since no table width was initially given
	471	int newWidth = m_Width - wpix + maxWidth;
	472
	473	// Make sure that floating-width columns will have the right size.
	474	// Calculate sum of all floating-width columns
	475	int percentage = 0;
	476	for (i = 0; i < m_NumCols; i++)
	477	if ((m_ColsInfo[i].units == wxHTML_UNITS_PERCENT) && (m_ColsInfo[i].width != 0))
	478	percentage += m_ColsInfo[i].width;
	479
	480	if (percentage >= 100)
	481	newWidth = w;
	482	else
	483	newWidth = newWidth * 100 / (100 - percentage);
	484
	485	newWidth = wxMin(newWidth, w - (m_NumCols + 1) * m_Spacing);
	486	wpix -= m_Width - newWidth;
	487	m_Width = newWidth;
	488	}
	489
	490
	491	// 1c. setup floating-width columns:
	492	int wtemp = wpix;
	493	for (i = 0; i < m_NumCols; i++)
	494	if ((m_ColsInfo[i].units == wxHTML_UNITS_PERCENT) && (m_ColsInfo[i].width != 0))
	495	{
	496	m_ColsInfo[i].pixwidth = wxMin(m_ColsInfo[i].width, 100) * wpix / 100;
	497
	498	// Make sure to leave enough space for the other columns
	499	int minRequired = 0;
	500	for (j = 0; j < m_NumCols; j++)
	501	{
	502	if ((m_ColsInfo[j].units == wxHTML_UNITS_PERCENT && j > i) \|\|
	503	!m_ColsInfo[j].width)
	504	minRequired += m_ColsInfo[j].minWidth;
	505	}
	506	m_ColsInfo[i].pixwidth = wxMax(wxMin(wtemp - minRequired, m_ColsInfo[i].pixwidth), m_ColsInfo[i].minWidth);
	507
	508	wtemp -= m_ColsInfo[i].pixwidth;
	509	}
	510	wpix = wtemp;
	511
	512	// 1d. setup default columns (no width specification supplied):
	513	// The algorithm assigns calculates the maximum possible width if line
	514	// wrapping would be disabled and assigns column width as a fraction
	515	// based upon the maximum width of a column
	516	// FIXME: I'm not sure if this algorithm is conform to HTML standard,
	517	// though it seems to be much better than the old one
	518
	519	for (i = j = 0; i < m_NumCols; i++)
	520	if (m_ColsInfo[i].width == 0) j++;
	521	if (wpix < 0)
	522	wpix = 0;
	523
	524	// Assign widths
	525	for (i = 0; i < m_NumCols; i++)
	526	if (m_ColsInfo[i].width == 0)
	527	{
	528	// Assign with, make sure not to drop below minWidth
	529	if (maxWidth)
	530	m_ColsInfo[i].pixwidth = (int)(wpix * (m_ColsInfo[i].maxWidth / (float)maxWidth) + 0.5);
	531	else
	532	m_ColsInfo[i].pixwidth = wpix / j;
	533
	534	// Make sure to leave enough space for the other columns
	535	int minRequired = 0;
	536	int r;
	537	for (r = i + 1; r < m_NumCols; r++)
	538	{
	539	if (!m_ColsInfo[r].width)
	540	minRequired += m_ColsInfo[r].minWidth;
	541	}
	542	m_ColsInfo[i].pixwidth = wxMax(wxMin(wpix - minRequired, m_ColsInfo[i].pixwidth), m_ColsInfo[i].minWidth);
	543
	544	if (maxWidth)
	545	{
	546	if (m_ColsInfo[i].pixwidth > (wpix * (m_ColsInfo[i].maxWidth / (float)maxWidth) + 0.5))
	547	{
	548	int diff = (int)(m_ColsInfo[i].pixwidth - (wpix * m_ColsInfo[i].maxWidth / (float)maxWidth + 0.5));
	549	maxWidth += diff - m_ColsInfo[i].maxWidth;
	550	}
	551	else
	552	maxWidth -= m_ColsInfo[i].maxWidth;
	553	}
	554	wpix -= m_ColsInfo[i].pixwidth;
	555	}
	556	}
	557
	558	/* 2. compute positions of columns: */
	559	{
	560	int wpos = m_Spacing;
	561	for (int i = 0; i < m_NumCols; i++)
	562	{
	563	m_ColsInfo[i].leftpos = wpos;
	564	wpos += m_ColsInfo[i].pixwidth + m_Spacing;
	565	}
	566	}
	567
	568	/* 3. sub-layout all cells: */
	569	{
	570	int *ypos = new int[m_NumRows + 1];
	571
	572	int actcol, actrow;
	573	int fullwid;
	574	wxHtmlContainerCell *actcell;
	575
	576	ypos[0] = m_Spacing;
	577	for (actrow = 1; actrow <= m_NumRows; actrow++) ypos[actrow] = -1;
	578	for (actrow = 0; actrow < m_NumRows; actrow++)
	579	{
	580	if (ypos[actrow] == -1) ypos[actrow] = ypos[actrow-1];
	581	// 3a. sub-layout and detect max height:
	582
	583	for (actcol = 0; actcol < m_NumCols; actcol++) {
	584	if (m_CellInfo[actrow][actcol].flag != cellUsed) continue;
	585	actcell = m_CellInfo[actrow][actcol].cont;
	586	fullwid = 0;
	587	for (int i = actcol; i < m_CellInfo[actrow][actcol].colspan + actcol; i++)
	588	fullwid += m_ColsInfo[i].pixwidth;
	589	fullwid += (m_CellInfo[actrow][actcol].colspan - 1) * m_Spacing;
	590	actcell->SetMinHeight(m_CellInfo[actrow][actcol].minheight, m_CellInfo[actrow][actcol].valign);
	591	actcell->Layout(fullwid);
	592
	593	if (ypos[actrow] + actcell->GetHeight() + m_CellInfo[actrow][actcol].rowspan * m_Spacing > ypos[actrow + m_CellInfo[actrow][actcol].rowspan])
	594	ypos[actrow + m_CellInfo[actrow][actcol].rowspan] =
	595	ypos[actrow] + actcell->GetHeight() + m_CellInfo[actrow][actcol].rowspan * m_Spacing;
	596	}
	597	}
	598
	599	for (actrow = 0; actrow < m_NumRows; actrow++)
	600	{
	601	// 3b. place cells in row & let'em all have same height:
	602
	603	for (actcol = 0; actcol < m_NumCols; actcol++)
	604	{
	605	if (m_CellInfo[actrow][actcol].flag != cellUsed) continue;
	606	actcell = m_CellInfo[actrow][actcol].cont;
	607	actcell->SetMinHeight(
	608	ypos[actrow + m_CellInfo[actrow][actcol].rowspan] - ypos[actrow] - m_Spacing,
	609	m_CellInfo[actrow][actcol].valign);
	610	fullwid = 0;
	611	for (int i = actcol; i < m_CellInfo[actrow][actcol].colspan + actcol; i++)
	612	fullwid += m_ColsInfo[i].pixwidth;
	613	fullwid += (m_CellInfo[actrow][actcol].colspan - 1) * m_Spacing;
	614	actcell->Layout(fullwid);
	615	actcell->SetPos(m_ColsInfo[actcol].leftpos, ypos[actrow]);
	616	}
	617	}
	618	m_Height = ypos[m_NumRows];
	619	delete[] ypos;
	620	}
	621
	622	/* 4. adjust table's width if it was too small: */
	623	if (m_NumCols > 0)
	624	{
	625	int twidth = m_ColsInfo[m_NumCols-1].leftpos +
	626	m_ColsInfo[m_NumCols-1].pixwidth + m_Spacing;
	627	if (twidth > m_Width)
	628	m_Width = twidth;
	629	}
	630	}
	631
	632
	633
	634
	635
	636
	637	//-----------------------------------------------------------------------------
	638	// The tables handler:
	639	//-----------------------------------------------------------------------------
	640
	641
	642	TAG_HANDLER_BEGIN(TABLE, "TABLE,TR,TD,TH")
	643
	644	TAG_HANDLER_VARS
	645	wxHtmlTableCell* m_Table;
	646	wxString m_tAlign, m_rAlign;
	647
	648	TAG_HANDLER_CONSTR(TABLE)
	649	{
	650	m_Table = NULL;
	651	m_tAlign = m_rAlign = wxEmptyString;
	652	}
	653
	654
	655	TAG_HANDLER_PROC(tag)
	656	{
	657	wxHtmlContainerCell *c;
	658
	659	// new table started, backup upper-level table (if any) and create new:
	660	if (tag.GetName() == wxT("TABLE"))
	661	{
	662	wxHtmlTableCell *oldt = m_Table;
	663	wxHtmlContainerCell *oldcont;
	664
	665	oldcont = c = m_WParser->OpenContainer();
	666
	667	m_Table = new wxHtmlTableCell(c, tag);
	668
	669	// width:
	670	{
	671	if (tag.HasParam(wxT("WIDTH")))
	672	{
	673	wxString wd = tag.GetParam(wxT("WIDTH"));
	674
	675	if (wd[wd.Length()-1] == wxT('%'))
	676	{
	677	int width = 0;
	678	wxSscanf(wd.c_str(), wxT("%i%%"), &width);
	679	m_Table->SetWidthFloat(width, wxHTML_UNITS_PERCENT);
	680	}
	681	else
	682	{
	683	int width = 0;
	684	wxSscanf(wd.c_str(), wxT("%i"), &width);
	685	m_Table->SetWidthFloat((int)(m_WParser->GetPixelScale() * width), wxHTML_UNITS_PIXELS);
	686	}
	687	}
	688	else
	689	m_Table->SetWidthFloat(0, wxHTML_UNITS_PIXELS);
	690	}
	691	int oldAlign = m_WParser->GetAlign();
	692	m_tAlign = wxEmptyString;
	693	if (tag.HasParam(wxT("ALIGN")))
	694	m_tAlign = tag.GetParam(wxT("ALIGN"));
	695
	696	ParseInner(tag);
	697
	698	m_WParser->SetAlign(oldAlign);
	699	m_WParser->SetContainer(oldcont);
	700	m_WParser->CloseContainer();
	701
	702	m_Table = oldt;
	703	return TRUE;
	704	}
	705
	706
	707	else if (m_Table)
	708	{
	709	// new row in table
	710	if (tag.GetName() == wxT("TR"))
	711	{
	712	m_Table->AddRow(tag);
	713	m_rAlign = m_tAlign;
	714	if (tag.HasParam(wxT("ALIGN")))
	715	m_rAlign = tag.GetParam(wxT("ALIGN"));
	716	}
	717
	718	// new cell
	719	else
	720	{
	721	c = m_WParser->SetContainer(new wxHtmlContainerCell(m_Table));
	722	m_Table->AddCell(c, tag);
	723
	724	m_WParser->OpenContainer();
	725
	726	if (tag.GetName() == wxT("TH")) /header style/
	727	m_WParser->SetAlign(wxHTML_ALIGN_CENTER);
	728	else
	729	m_WParser->SetAlign(wxHTML_ALIGN_LEFT);
	730
	731	wxString als;
	732
	733	als = m_rAlign;
	734	if (tag.HasParam(wxT("ALIGN")))
	735	als = tag.GetParam(wxT("ALIGN"));
	736	als.MakeUpper();
	737	if (als == wxT("RIGHT"))
	738	m_WParser->SetAlign(wxHTML_ALIGN_RIGHT);
	739	else if (als == wxT("LEFT"))
	740	m_WParser->SetAlign(wxHTML_ALIGN_LEFT);
	741	else if (als == wxT("CENTER"))
	742	m_WParser->SetAlign(wxHTML_ALIGN_CENTER);
	743
	744	m_WParser->OpenContainer();
	745	}
	746	}
	747	return FALSE;
	748	}
	749
	750	TAG_HANDLER_END(TABLE)
	751
	752
	753
	754
	755
	756	TAGS_MODULE_BEGIN(Tables)
	757
	758	TAGS_MODULE_ADD(TABLE)
	759
	760	TAGS_MODULE_END(Tables)
	761
	762
	763	#endif