wxSizeEvent for wxPalmTLW. wxScrollEvent for wxSlider.

[wxWidgets.git] / src / html / m_tables.cpp

diff --git a/src/html/m_tables.cpp b/src/html/m_tables.cpp
index b9fcc38bb22ead2e1224567d539d323b32bdbe05..a1eec08b1ec588a8d0676033942041fc17196e08 100644 (file)
--- 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
 // 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
 
 #pragma implementation
 #endif
 


@@ -15,21 +15,13 @@
 
 #include "wx/defs.h"
 #if wxUSE_HTML && wxUSE_STREAMS
 
 #include "wx/defs.h"
 #if wxUSE_HTML && wxUSE_STREAMS

-#ifdef __BORDLANDC__
+#ifdef __BORLANDC__

 #pragma hdrstop
 #endif
 
 #ifndef WXPRECOMP
 #endif
 
 #pragma hdrstop
 #endif
 
 #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"
 
 #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;
     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
     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();
     void ComputeMinMaxWidths();

+
+    DECLARE_NO_COPY_CLASS(wxHtmlTableCell)

 };
 
 
 };
 
 


@@ -133,7 +128,7 @@ wxHtmlTableCell::wxHtmlTableCell(wxHtmlContainerCell *parent, const wxHtmlTag& t
  : wxHtmlContainerCell(parent)
 {
     m_PixelScale = pixel_scale;
  : 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;
             (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:
         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.
         //     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;
             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))
             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;
     }
 
         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()
 {
     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++)
     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);
             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;
                 width -= (cell.colspan-1) * m_Spacing;

+                maxWidth -= (cell.colspan-1) * m_Spacing;

                 // HTML 4.0 says it is acceptable to distribute min/max
                 // HTML 4.0 says it is acceptable to distribute min/max

-                // width of spanning cells evently

                 width /= cell.colspan;
                 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 (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();
 
 void wxHtmlTableCell::Layout(int w)
 {
     ComputeMinMaxWidths();

-    
+

     wxHtmlCell::Layout(w);
 
     /*
     wxHtmlCell::Layout(w);
 
     /*


@@ -393,8 +412,18 @@ void wxHtmlTableCell::Layout(int w)
 
     if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT)
     {
 
     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
     {
     }
     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;
     {
         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)
             {
         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;
             }
 
                                                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))
             {
         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++;
         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)
         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: */
     }
 
     /* 2.  compute positions of columns: */


@@ -507,6 +618,15 @@ void wxHtmlTableCell::Layout(int w)
         m_Height = ypos[m_NumRows];
         delete[] ypos;
     }
         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;
+    }

 }
 
 
 }
 
 


@@ -524,13 +644,11 @@ TAG_HANDLER_BEGIN(TABLE, "TABLE,TR,TD,TH")
     TAG_HANDLER_VARS
         wxHtmlTableCell* m_Table;
         wxString m_tAlign, m_rAlign;
     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;
 
     TAG_HANDLER_CONSTR(TABLE)
     {
         m_Table = NULL;
         m_tAlign = m_rAlign = wxEmptyString;

-        m_OldAlign = wxHTML_ALIGN_LEFT;

     }
 
 
     }
 
 


@@ -543,25 +661,46 @@ TAG_HANDLER_BEGIN(TABLE, "TABLE,TR,TD,TH")
         {
             wxHtmlTableCell *oldt = m_Table;
             wxHtmlContainerCell *oldcont;
         {
             wxHtmlTableCell *oldt = m_Table;
             wxHtmlContainerCell *oldcont;

-            int m_OldAlign;

 
             oldcont = c = m_WParser->OpenContainer();
 
 
             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();
+            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_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_WParser->SetContainer(oldcont);
             m_WParser->CloseContainer();

-            
+

             m_Table = oldt;
             m_Table = oldt;

-            return TRUE;
+            return true;

         }
 
 
         }
 
 


@@ -579,33 +718,33 @@ TAG_HANDLER_BEGIN(TABLE, "TABLE,TR,TD,TH")
             // new cell
             else
             {
             // 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*/
                 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);
                     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);

 
 

-                {
-                    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);
-                }

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

-        return FALSE;
+        return false;

     }
 
 TAG_HANDLER_END(TABLE)
     }
 
 TAG_HANDLER_END(TABLE)