//-----------------------------------------------------------------------------
-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();
};
{
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::ComputeMinMaxWidths()
+{
+ if (m_NumCols == 0 || m_ColsInfo[0].minWidth != -1) return;
+
+ int left, right, width;
+
+ m_ColsInfo[0].minWidth = 0; // avoid recursion
+ Layout(1);
+ 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->GetHorizontalConstraints(&left, &right);
+ width = right - left + 1;
+ // HTML 4.0 says it is acceptable to distribute min/max
+ // width of spanning cells evently
+ width /= cell.colspan;
+ width += m_Spacing + 2*m_Padding;
+ 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();
+
/*
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):
projects / wxWidgets.git / commitdiff
