src/html/m_list.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        m_list.cpp
   3 // Purpose:     wxHtml module for lists
   4 // Author:      Vaclav Slavik
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1999 Vaclav Slavik
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  10 #pragma implementation
  11 #endif
  12
  13 #include "wx/wxprec.h"
  14
  15
  16 #include "wx/defs.h"
  17 #if wxUSE_HTML && wxUSE_STREAMS
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WXPRECOMP
  24     #include "wx/brush.h"
  25     #include "wx/dc.h"
  26 #endif
  27
  28 #include "wx/html/forcelnk.h"
  29 #include "wx/html/m_templ.h"
  30
  31 #include "wx/html/htmlcell.h"
  32
  33 FORCE_LINK_ME(m_list)
  34
  35
  36 //-----------------------------------------------------------------------------
  37 // wxHtmlListmarkCell
  38 //-----------------------------------------------------------------------------
  39
  40 class wxHtmlListmarkCell : public wxHtmlCell
  41 {
  42     private:
  43         wxBrush m_Brush;
  44     public:
  45         wxHtmlListmarkCell(wxDC *dc, const wxColour& clr);
  46         void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
  47                   wxHtmlRenderingInfo& info);
  48
  49     DECLARE_NO_COPY_CLASS(wxHtmlListmarkCell)
  50 };
  51
  52 wxHtmlListmarkCell::wxHtmlListmarkCell(wxDC* dc, const wxColour& clr) : wxHtmlCell(), m_Brush(clr, wxSOLID)
  53 {
  54     m_Width =  dc->GetCharHeight();
  55     m_Height = dc->GetCharHeight();
  56     m_Descent = 0;
  57 }
  58
  59
  60
  61 void wxHtmlListmarkCell::Draw(wxDC& dc, int x, int y,
  62                               int WXUNUSED(view_y1), int WXUNUSED(view_y2),
  63                               wxHtmlRenderingInfo& WXUNUSED(info))
  64 {
  65     dc.SetBrush(m_Brush);
  66     dc.DrawEllipse(x + m_PosX + m_Width / 3, y + m_PosY + m_Height / 3,
  67                    (m_Width / 3), (m_Width / 3));
  68 }
  69
  70 //-----------------------------------------------------------------------------
  71 // wxHtmlListCell
  72 //-----------------------------------------------------------------------------
  73
  74 struct wxHtmlListItemStruct
  75 {
  76     wxHtmlContainerCell *mark;
  77     wxHtmlContainerCell *cont;
  78     int minWidth;
  79     int maxWidth;
  80 };
  81
  82 class wxHtmlListCell : public wxHtmlContainerCell
  83 {
  84     private:
  85         wxBrush m_Brush;
  86
  87         int m_NumRows;
  88         wxHtmlListItemStruct *m_RowInfo;
  89         void ReallocRows(int rows);
  90         void ComputeMinMaxWidths();
  91         int m_ListmarkWidth;
  92
  93     public:
  94         wxHtmlListCell(wxHtmlContainerCell *parent);
  95         virtual ~wxHtmlListCell();
  96         void AddRow(wxHtmlContainerCell *mark, wxHtmlContainerCell *cont);
  97         virtual void Layout(int w);
  98
  99     DECLARE_NO_COPY_CLASS(wxHtmlListCell)
 100 };
 101
 102 wxHtmlListCell::wxHtmlListCell(wxHtmlContainerCell *parent) : wxHtmlContainerCell(parent)
 103 {
 104     m_NumRows = 0;
 105     m_RowInfo = 0;
 106     m_ListmarkWidth = 0;
 107 }
 108
 109 wxHtmlListCell::~wxHtmlListCell()
 110 {
 111     if (m_RowInfo) free(m_RowInfo);
 112 }
 113
 114 void wxHtmlListCell::Layout(int w)
 115 {
 116     wxHtmlCell::Layout(w);
 117
 118     ComputeMinMaxWidths();
 119     m_Width = wxMax(m_Width, wxMin(w, GetMaxTotalWidth()));
 120
 121     int s_width = m_Width - m_IndentLeft;
 122
 123     int vpos = 0;
 124     for (int r = 0; r < m_NumRows; r++)
 125     {
 126         m_RowInfo[r].mark->Layout(m_ListmarkWidth);
 127         m_RowInfo[r].mark->SetPos(m_IndentLeft, vpos);
 128         m_RowInfo[r].cont->Layout(s_width - m_ListmarkWidth);
 129         m_RowInfo[r].cont->SetPos(m_IndentLeft + m_ListmarkWidth, vpos);
 130         vpos += wxMax(m_RowInfo[r].cont->GetHeight(), m_RowInfo[r].mark->GetHeight());
 131     }
 132     m_Height = vpos;
 133 }
 134
 135 void wxHtmlListCell::AddRow(wxHtmlContainerCell *mark, wxHtmlContainerCell *cont)
 136 {
 137     ReallocRows(++m_NumRows);
 138     m_RowInfo[m_NumRows - 1].mark = mark;
 139     m_RowInfo[m_NumRows - 1].cont = cont;
 140 }
 141
 142 void wxHtmlListCell::ReallocRows(int rows)
 143 {
 144     m_RowInfo = (wxHtmlListItemStruct*) realloc(m_RowInfo, sizeof(wxHtmlListItemStruct) * rows);
 145     m_RowInfo[rows - 1].mark = 0;
 146     m_RowInfo[rows - 1].cont = 0;
 147     m_RowInfo[rows - 1].minWidth = 0;
 148     m_RowInfo[rows - 1].maxWidth = 0;
 149
 150     m_NumRows = rows;
 151 }
 152
 153 void wxHtmlListCell::ComputeMinMaxWidths()
 154 {
 155     if (m_NumRows == 0) return;
 156
 157     m_MaxTotalWidth = 0;
 158     m_Width = 0;
 159
 160     for (int r = 0; r < m_NumRows; r++)
 161     {
 162         wxHtmlListItemStruct& row = m_RowInfo[r];
 163         row.mark->Layout(1);
 164         row.cont->Layout(1);
 165         int maxWidth = row.cont->GetMaxTotalWidth();
 166         int width = row.cont->GetWidth();
 167         if (row.mark->GetWidth() > m_ListmarkWidth)
 168             m_ListmarkWidth = row.mark->GetWidth();
 169         if (maxWidth > m_MaxTotalWidth)
 170             m_MaxTotalWidth = maxWidth;
 171         if (width > m_Width)
 172             m_Width = width;
 173     }
 174     m_Width += m_ListmarkWidth + m_IndentLeft;
 175     m_MaxTotalWidth += m_ListmarkWidth + m_IndentLeft;
 176 }
 177
 178 //-----------------------------------------------------------------------------
 179 // wxHtmlListcontentCell
 180 //-----------------------------------------------------------------------------
 181
 182 class wxHtmlListcontentCell : public wxHtmlContainerCell
 183 {
 184 public:
 185     wxHtmlListcontentCell(wxHtmlContainerCell *p) : wxHtmlContainerCell(p) {}
 186     virtual void Layout(int w) {
 187         // Reset top indentation, fixes <li><p>
 188         SetIndent(0, wxHTML_INDENT_TOP);
 189         wxHtmlContainerCell::Layout(w);
 190     }
 191 };
 192
 193 //-----------------------------------------------------------------------------
 194 // The list handler:
 195 //-----------------------------------------------------------------------------
 196
 197
 198 TAG_HANDLER_BEGIN(OLULLI, "OL,UL,LI")
 199
 200     TAG_HANDLER_VARS
 201         wxHtmlListCell *m_List;
 202         int m_Numbering;
 203                 // this is number of actual item of list or 0 for dots
 204
 205     TAG_HANDLER_CONSTR(OLULLI)
 206     {
 207         m_List = NULL;
 208         m_Numbering = 0;
 209     }
 210
 211     TAG_HANDLER_PROC(tag)
 212     {
 213         wxHtmlContainerCell *c;
 214
 215         // List Item:
 216         if (m_List && tag.GetName() == wxT("LI"))
 217         {
 218             c = m_WParser->SetContainer(new wxHtmlContainerCell(m_List));
 219             c->SetAlignVer(wxHTML_ALIGN_TOP);
 220
 221             wxHtmlContainerCell *mark = c;
 222             c->SetWidthFloat(2 * m_WParser->GetCharWidth(), wxHTML_UNITS_PIXELS);
 223             if (m_Numbering == 0)
 224             {
 225                 // Centering gives more space after the bullet
 226                 c->SetAlignHor(wxHTML_ALIGN_CENTER);
 227                 c->InsertCell(new wxHtmlListmarkCell(m_WParser->GetDC(), m_WParser->GetActualColor()));
 228             }
 229             else
 230             {
 231                 c->SetAlignHor(wxHTML_ALIGN_RIGHT);
 232                 wxString mark;
 233                 mark.Printf(wxT("%i."), m_Numbering);
 234                 c->InsertCell(new wxHtmlWordCell(mark, *(m_WParser->GetDC())));
 235             }
 236             m_WParser->CloseContainer();
 237
 238             c = m_WParser->OpenContainer();
 239
 240             m_List->AddRow(mark, c);
 241             c = m_WParser->OpenContainer();
 242             m_WParser->SetContainer(new wxHtmlListcontentCell(c));
 243
 244             if (m_Numbering != 0) m_Numbering++;
 245         }
 246
 247         // Begin of List (not-numbered): "UL", "OL"
 248         else if (tag.GetName() == wxT("UL") || tag.GetName() == wxT("OL"))
 249         {
 250             int oldnum = m_Numbering;
 251
 252             if (tag.GetName() == wxT("UL")) m_Numbering = 0;
 253             else m_Numbering = 1;
 254
 255             wxHtmlContainerCell *oldcont;
 256             oldcont = c = m_WParser->OpenContainer();
 257
 258             wxHtmlListCell *oldList = m_List;
 259             m_List = new wxHtmlListCell(c);
 260             m_List->SetIndent(2 * m_WParser->GetCharWidth(), wxHTML_INDENT_LEFT);
 261
 262             ParseInner(tag);
 263
 264             m_WParser->SetContainer(oldcont);
 265             m_WParser->CloseContainer();
 266
 267             m_Numbering = oldnum;
 268             m_List = oldList;
 269             return true;
 270         }
 271         return false;
 272
 273     }
 274
 275 TAG_HANDLER_END(OLULLI)
 276
 277
 278 TAGS_MODULE_BEGIN(List)
 279
 280     TAGS_MODULE_ADD(OLULLI)
 281
 282 TAGS_MODULE_END(List)
 283
 284 #endif