src/html/winpars.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        winpars.cpp
   3 // Purpose:     wxHtmlParser class (generic parser)
   4 // Author:      Vaclav Slavik
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1999 Vaclav Slavik
   7 // Licence:     wxWindows Licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11 #ifdef __GNUG__
  12 #pragma implementation
  13 #endif
  14
  15 #include "wx/wxprec.h"
  16
  17 #include "wx/defs.h"
  18 #if wxUSE_HTML
  19
  20 #ifdef __BORDLANDC__
  21 #pragma hdrstop
  22 #endif
  23
  24 #ifndef WXPRECOMP
  25 #include "wx/wx.h"
  26 #endif
  27
  28 #include "wx/html/htmldefs.h"
  29 #include "wx/html/winpars.h"
  30 #include "wx/html/htmlwin.h"
  31
  32
  33 //-----------------------------------------------------------------------------
  34 // wxHtmlWinParser
  35 //-----------------------------------------------------------------------------
  36
  37
  38 wxList wxHtmlWinParser::m_Modules;
  39
  40 wxHtmlWinParser::wxHtmlWinParser(wxWindow *wnd) : wxHtmlParser()
  41 {
  42     m_Window = wnd;
  43     m_Container = NULL;
  44     m_DC = NULL;
  45     m_CharHeight = m_CharWidth = 0;
  46     m_UseLink = FALSE;
  47
  48     {
  49         int i, j, k, l, m;
  50         for (i = 0; i < 2; i++)
  51             for (j = 0; j < 2; j++)
  52                 for (k = 0; k < 2; k++)
  53                     for (l = 0; l < 2; l++)
  54                         for (m = 0; m < 7; m++) {
  55                             m_FontsTable[i][j][k][l][m] = NULL;
  56                             m_FontsFacesTable[i][j][k][l][m] = wxEmptyString;
  57                         }
  58 #ifdef __WXMSW__
  59         static int default_sizes[7] = {7, 8, 10, 12, 16, 22, 30};
  60 #else
  61         static int default_sizes[7] = {10, 12, 14, 16, 19, 24, 32};
  62 #endif
  63         SetFonts("", "", default_sizes);
  64     }
  65
  66     // fill in wxHtmlParser's tables:
  67     wxNode *node = m_Modules.GetFirst();
  68     while (node) {
  69         wxHtmlTagsModule *mod = (wxHtmlTagsModule*) node -> GetData();
  70         mod -> FillHandlersTable(this);
  71         node = node -> GetNext();
  72     }
  73 }
  74
  75
  76
  77 void wxHtmlWinParser::AddModule(wxHtmlTagsModule *module)
  78 {
  79     m_Modules.Append(module);
  80 }
  81
  82
  83
  84 void wxHtmlWinParser::SetFonts(wxString normal_face, wxString fixed_face, const int *sizes)
  85 {
  86     int i, j, k, l, m;
  87
  88     for (i = 0; i < 7; i++) m_FontsSizes[i] = sizes[i];
  89     m_FontFaceFixed = fixed_face;
  90     m_FontFaceNormal = normal_face;
  91
  92     for (i = 0; i < 2; i++)
  93         for (j = 0; j < 2; j++)
  94             for (k = 0; k < 2; k++)
  95                 for (l = 0; l < 2; l++)
  96                     for (m = 0; m < 7; m++) {
  97                         if (m_FontsTable[i][j][k][l][m] != NULL) {
  98                             delete m_FontsTable[i][j][k][l][m];
  99                             m_FontsTable[i][j][k][l][m] = NULL;
 100                         }
 101                     }
 102 }
 103
 104
 105
 106 void wxHtmlWinParser::InitParser(const wxString& source)
 107 {
 108     wxHtmlParser::InitParser(source);
 109     wxASSERT_MSG(m_DC != NULL, _("no DC assigned to wxHtmlWinParser!!"));
 110
 111     m_FontBold = m_FontItalic = m_FontUnderlined = m_FontFixed = FALSE;
 112     m_FontSize = 3; //default one
 113     CreateCurrentFont();           // we're selecting default font into
 114     m_DC -> GetTextExtent("H", &m_CharWidth, &m_CharHeight);
 115                 /* NOTE : we're not using GetCharWidth/Height() because
 116                    of differences under X and win
 117                  */
 118
 119     m_UseLink = FALSE;
 120     m_Link = wxHtmlLinkInfo("", "");
 121     m_LinkColor.Set(0, 0, 0xFF);
 122     m_ActualColor.Set(0, 0, 0);
 123     m_Align = wxHTML_ALIGN_LEFT;
 124     m_tmpLastWasSpace = FALSE;
 125
 126     OpenContainer();
 127
 128     OpenContainer();
 129     m_Container -> InsertCell(new wxHtmlColourCell(m_ActualColor));
 130     m_Container -> InsertCell(new wxHtmlFontCell(CreateCurrentFont()));
 131 }
 132
 133
 134
 135 void wxHtmlWinParser::DoneParser()
 136 {
 137     m_Container = NULL;
 138     wxHtmlParser::DoneParser();
 139 }
 140
 141
 142
 143 wxObject* wxHtmlWinParser::GetProduct()
 144 {
 145     wxHtmlContainerCell *top;
 146
 147     CloseContainer();
 148     OpenContainer();
 149
 150     top = m_Container;
 151     while (top -> GetParent()) top = top -> GetParent();
 152     return top;
 153 }
 154
 155
 156
 157 void wxHtmlWinParser::AddText(const char* txt)
 158 {
 159     wxHtmlCell *c;
 160     int i = 0, x, lng = strlen(txt);
 161     char temp[wxHTML_BUFLEN];
 162     register char d;
 163     int templen = 0;
 164
 165     if (m_tmpLastWasSpace) {
 166         while ((i < lng) && ((txt[i] == '\n') || (txt[i] == '\r') || (txt[i] == ' ') || (txt[i] == '\t'))) i++;
 167     }
 168
 169     while (i < lng) {
 170         x = 0;
 171         d = temp[templen++] = txt[i];
 172         if ((d == '\n') || (d == '\r') || (d == ' ') || (d == '\t')) {
 173             i++, x++;
 174             while ((i < lng) && ((txt[i] == '\n') || (txt[i] == '\r') || (txt[i] == ' ') || (txt[i] == '\t'))) i++, x++;
 175         }
 176         else i++;
 177
 178         if (x) {
 179             temp[templen-1] = ' ';
 180             temp[templen] = 0;
 181             templen = 0;
 182             c = new wxHtmlWordCell(temp, *(GetDC()));
 183             if (m_UseLink) c -> SetLink(m_Link);
 184             m_Container -> InsertCell(c);
 185             m_tmpLastWasSpace = TRUE;
 186         }
 187     }
 188     if (templen) {
 189         temp[templen] = 0;
 190         c = new wxHtmlWordCell(temp, *(GetDC()));
 191         if (m_UseLink) c -> SetLink(m_Link);
 192         m_Container -> InsertCell(c);
 193         m_tmpLastWasSpace = FALSE;
 194     }
 195 }
 196
 197
 198
 199 wxHtmlContainerCell* wxHtmlWinParser::OpenContainer()
 200 {
 201     m_Container = new wxHtmlContainerCell(m_Container);
 202     m_Container -> SetAlignHor(m_Align);
 203     m_tmpLastWasSpace = TRUE;
 204         /* to avoid space being first character in paragraph */
 205     return m_Container;
 206 }
 207
 208
 209
 210 wxHtmlContainerCell* wxHtmlWinParser::SetContainer(wxHtmlContainerCell *c)
 211 {
 212     m_tmpLastWasSpace = TRUE;
 213         /* to avoid space being first character in paragraph */
 214     return m_Container = c;
 215 }
 216
 217
 218
 219 wxHtmlContainerCell* wxHtmlWinParser::CloseContainer()
 220 {
 221     m_Container = m_Container -> GetParent();
 222     return m_Container;
 223 }
 224
 225
 226 void wxHtmlWinParser::SetFontSize(int s)
 227 {
 228     if (s < 1) s = 1;
 229     else if (s > 7) s = 7;
 230     m_FontSize = s;
 231 }
 232
 233
 234
 235 wxFont* wxHtmlWinParser::CreateCurrentFont()
 236 {
 237     int fb = GetFontBold(),
 238         fi = GetFontItalic(),
 239         fu = GetFontUnderlined(),
 240         ff = GetFontFixed(),
 241         fs = GetFontSize() - 1 /*remap from <1;7> to <0;6>*/ ;
 242
 243     wxString face = ff ? m_FontFaceFixed : m_FontFaceNormal;
 244     wxString *faceptr = &(m_FontsFacesTable[fb][fi][fu][ff][fs]);
 245     wxFont **fontptr = &(m_FontsTable[fb][fi][fu][ff][fs]);
 246
 247     if (*fontptr != NULL && *faceptr != face) {
 248         delete *fontptr;
 249         *fontptr = NULL;
 250     }
 251
 252     if (*fontptr == NULL) {
 253         *faceptr = face;
 254         *fontptr = new wxFont(
 255                        m_FontsSizes[fs] * m_PixelScale,
 256                        ff ? wxMODERN : wxSWISS,
 257                        fi ? wxITALIC : wxNORMAL,
 258                        fb ? wxBOLD : wxNORMAL,
 259                        fu ? TRUE : FALSE, face);
 260     }
 261     m_DC -> SetFont(**fontptr);
 262     return (*fontptr);
 263 }
 264
 265
 266
 267 void wxHtmlWinParser::SetLink(const wxHtmlLinkInfo& link)
 268 {
 269     m_Link = link;
 270     m_UseLink = (link.GetHref() != wxEmptyString);
 271 }
 272
 273
 274
 275
 276 //-----------------------------------------------------------------------------
 277 // wxHtmlWinTagHandler
 278 //-----------------------------------------------------------------------------
 279
 280 IMPLEMENT_ABSTRACT_CLASS(wxHtmlWinTagHandler, wxHtmlTagHandler)
 281
 282
 283
 284 //-----------------------------------------------------------------------------
 285 // wxHtmlTagsModule
 286 //-----------------------------------------------------------------------------
 287
 288
 289 IMPLEMENT_DYNAMIC_CLASS(wxHtmlTagsModule, wxModule)
 290
 291
 292 bool wxHtmlTagsModule::OnInit()
 293 {
 294     wxHtmlWinParser::AddModule(this);
 295     return TRUE;
 296 }
 297
 298
 299
 300 void wxHtmlTagsModule::OnExit()
 301 {
 302 }
 303 #endif
 304