// Licence: wxWindows Licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation
#endif
#include "wx/defs.h"
#if wxUSE_HTML && wxUSE_STREAMS
-#ifdef __BORDLANDC__
+#ifdef __BORLANDC__
#pragma hdrstop
#endif
//-----------------------------------------------------------------------------
-typedef struct {
- int width, units;
- // universal
- int leftpos, pixwidth, maxrealwidth;
- // temporary (depends on width of table)
- } colStruct;
+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)
+};
-typedef enum {
- cellSpan,
- cellUsed,
- cellFree
- } cellState;
+enum cellState
+{
+ cellSpan,
+ cellUsed,
+ cellFree
+};
-typedef struct {
- wxHtmlContainerCell *cont;
- int colspan, rowspan;
- int minheight, valign;
- cellState flag;
- } cellStruct;
+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();
+
+ DECLARE_NO_COPY_CLASS(wxHtmlTableCell)
};
: wxHtmlContainerCell(parent)
{
m_PixelScale = pixel_scale;
- m_HasBorders = (tag.GetParam(wxT("BORDER")) != wxT("0"));
+ m_HasBorders =
+ (tag.HasParam(wxT("BORDER")) && tag.GetParam(wxT("BORDER")) != wxT("0"));
m_ColsInfo = NULL;
m_NumCols = m_NumRows = 0;
m_CellInfo = NULL;
{
m_ColsInfo[j].width = 0;
m_ColsInfo[j].units = wxHTML_UNITS_PERCENT;
+ m_ColsInfo[j].minWidth = m_ColsInfo[j].maxWidth = -1;
}
m_NumCols = cols;
{
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;
cell->SetIndent(m_Padding, wxHTML_INDENT_ALL, wxHTML_UNITS_PIXELS);
}
-
-
+void wxHtmlTableCell::ComputeMinMaxWidths()
+{
+ if (m_NumCols == 0 || m_ColsInfo[0].minWidth != -1) return;
+
+ 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 width = cell.cont->GetWidth();
+ width -= (cell.colspan-1) * m_Spacing;
+ // HTML 4.0 says it is acceptable to distribute min/max
+ 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 :
{
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):
- // NOTE! This algorithm doesn't conform to HTML standard : it assigns equal widths
- // instead of optimal
+ // FIXME: This algorithm doesn't conform to HTML standard : it assigns
+ // equal widths instead of optimal
for (i = j = 0; i < m_NumCols; i++)
if (m_ColsInfo[i].width == 0) j++;
for (i = 0; i < m_NumCols; i++)
if (m_ColsInfo[i].width == 0)
- m_ColsInfo[i].pixwidth = wpix / j;
+ {
+ // FIXME: this is not optimal, because if we allocate more than
+ // wpix/j pixels to one column, we should try to allocate
+ // smaller place to other columns
+ m_ColsInfo[i].pixwidth = wxMax(wpix/j, m_ColsInfo[i].minWidth);
+ }
}
/* 2. compute positions of columns: */
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;
+ }
}
TAG_HANDLER_VARS
wxHtmlTableCell* m_Table;
wxString m_tAlign, m_rAlign;
- int m_OldAlign;
TAG_HANDLER_CONSTR(TABLE)
{
m_Table = NULL;
m_tAlign = m_rAlign = wxEmptyString;
- m_OldAlign = wxHTML_ALIGN_LEFT;
}
{
wxHtmlTableCell *oldt = m_Table;
wxHtmlContainerCell *oldcont;
- int m_OldAlign;
oldcont = c = m_WParser->OpenContainer();
c->SetWidthFloat(tag, m_WParser->GetPixelScale());
m_Table = new wxHtmlTableCell(c, tag, m_WParser->GetPixelScale());
- m_OldAlign = m_WParser->GetAlign();
+ int oldAlign = m_WParser->GetAlign();
m_tAlign = wxEmptyString;
if (tag.HasParam(wxT("ALIGN")))
m_tAlign = tag.GetParam(wxT("ALIGN"));
ParseInner(tag);
- m_WParser->SetAlign(m_OldAlign);
+ m_WParser->SetAlign(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"))
// new cell
else
{
- m_WParser->SetAlign(m_OldAlign);
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);
- }
-
- {
- 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("CENTER"))
- 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();
}
}
projects / wxWidgets.git / blobdiff