X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2b5f62a0b2db198609b45dec622a018dae37008e..046d682f0f684977b7ba933a128f5c84e06ded0e:/src/html/m_tables.cpp diff --git a/src/html/m_tables.cpp b/src/html/m_tables.cpp index 07aa795bac..a1eec08b1e 100644 --- a/src/html/m_tables.cpp +++ b/src/html/m_tables.cpp @@ -4,10 +4,10 @@ // Author: Vaclav Slavik // RCS-ID: $Id$ // Copyright: (c) 1999 Vaclav Slavik -// Licence: wxWindows Licence +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma implementation #endif @@ -22,14 +22,6 @@ #ifndef WXPRECOMP #endif - -/* -REMARKS: - 1. This version of m_tables doesn't support auto-layout algorithm. - This means that all columns are of same width unless explicitly specified. -*/ - - #include "wx/html/forcelnk.h" #include "wx/html/m_templ.h" @@ -73,6 +65,7 @@ struct cellStruct int colspan, rowspan; int minheight, valign; cellState flag; + bool nowrap; }; @@ -123,8 +116,10 @@ private: void ReallocRows(int rows); // Computes minimal and maximal widths of columns. Needs to be called - // only once, before first Layout(). + // only once, before first Layout(). void ComputeMinMaxWidths(); + + DECLARE_NO_COPY_CLASS(wxHtmlTableCell) }; @@ -133,7 +128,7 @@ wxHtmlTableCell::wxHtmlTableCell(wxHtmlContainerCell *parent, const wxHtmlTag& t : wxHtmlContainerCell(parent) { m_PixelScale = pixel_scale; - m_HasBorders = + m_HasBorders = (tag.HasParam(wxT("BORDER")) && tag.GetParam(wxT("BORDER")) != wxT("0")); m_ColsInfo = NULL; m_NumCols = m_NumRows = 0; @@ -293,14 +288,14 @@ void wxHtmlTableCell::AddCell(wxHtmlContainerCell *cell, const wxHtmlTag& tag) 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 + // "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) + if (m_CellInfo[r][c].colspan < 1) m_CellInfo[r][c].colspan = 1; - if (m_CellInfo[r][c].rowspan < 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)) @@ -344,15 +339,21 @@ void wxHtmlTableCell::AddCell(wxHtmlContainerCell *cell, const wxHtmlTag& tag) 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; - - int left, right, width; + if (m_NumCols == 0 || m_ColsInfo[0].minWidth != wxDefaultCoord) return; + m_MaxTotalWidth = 0; + int percentage = 0; for (int c = 0; c < m_NumCols; c++) { for (int r = 0; r < m_NumRows; r++) @@ -361,28 +362,46 @@ void wxHtmlTableCell::ComputeMinMaxWidths() if (cell.flag == cellUsed) { cell.cont->Layout(2*m_Padding + 1); - cell.cont->GetHorizontalConstraints(&left, &right); - width = right - left; + 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 of spanning cells evently width /= cell.colspan; - for (int j = 0; j < cell.colspan; j++) + 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; } - - // FIXME -- compute maxWidth as well. Not needed yet, so there's no - // point in computing it. -} + 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); /* @@ -393,8 +412,18 @@ void wxHtmlTableCell::Layout(int w) if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT) { - if (m_WidthFloat < 0) m_Width = (100 + m_WidthFloat) * w / 100; - else m_Width = m_WidthFloat * w / 100; + 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 { @@ -409,7 +438,10 @@ void wxHtmlTableCell::Layout(int w) */ - /* 1. setup columns widths: */ + /* 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; @@ -418,30 +450,109 @@ void wxHtmlTableCell::Layout(int w) 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].pixwidth = wxMax(m_ColsInfo[i].width, m_ColsInfo[i].minWidth); wpix -= m_ColsInfo[i].pixwidth; } - // 1b. setup floating-width columns: - int wtemp = 0; + // 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 = wxMax(m_ColsInfo[i].width * wpix / 100, - m_ColsInfo[i].minWidth); - wtemp += m_ColsInfo[i].pixwidth; + 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; + 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 - // 1c. setup defalut columns (no width specification supplied): - // NOTE! 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++; + if (wpix < 0) + wpix = 0; + + // Assign widths for (i = 0; i < m_NumCols; i++) if (m_ColsInfo[i].width == 0) - m_ColsInfo[i].pixwidth = wpix / j; + { + // 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: */ @@ -507,6 +618,15 @@ void wxHtmlTableCell::Layout(int w) 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; + } } @@ -544,8 +664,30 @@ TAG_HANDLER_BEGIN(TABLE, "TABLE,TR,TD,TH") oldcont = c = m_WParser->OpenContainer(); - c->SetWidthFloat(tag, m_WParser->GetPixelScale()); - m_Table = new wxHtmlTableCell(c, tag, m_WParser->GetPixelScale()); + 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"))) @@ -556,9 +698,9 @@ TAG_HANDLER_BEGIN(TABLE, "TABLE,TR,TD,TH") m_WParser->SetAlign(oldAlign); m_WParser->SetContainer(oldcont); m_WParser->CloseContainer(); - + m_Table = oldt; - return TRUE; + return true; } @@ -602,7 +744,7 @@ TAG_HANDLER_BEGIN(TABLE, "TABLE,TR,TD,TH") m_WParser->OpenContainer(); } } - return FALSE; + return false; } TAG_HANDLER_END(TABLE)