src/html/mod_image.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        mod_image.cpp
   3 // Purpose:     wxHtml module for displaying images
   4 // Author:      Vaclav Slavik
   5 // Copyright:   (c) 1999 Vaclav Slavik
   6 // Licence:     wxWindows Licence
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 #ifdef __GNUG__
  10 #pragma implementation
  11 #endif
  12
  13 #include <wx/wxprec.h>
  14
  15 #include "wx/defs.h"
  16 #if wxUSE_HTML
  17
  18 #ifdef __BORDLANDC__
  19 #pragma hdrstop
  20 #endif
  21
  22 #ifndef WXPRECOMP
  23 #include <wx/wx.h>
  24 #endif
  25
  26 #include <wx/html/forcelink.h>
  27 #include <wx/html/mod_templ.h>
  28
  29 #include <wx/wxhtml.h>
  30 #include <wx/image.h>
  31
  32 FORCE_LINK_ME(mod_image)
  33
  34
  35 //--------------------------------------------------------------------------------
  36 // wxHtmlImageCell
  37 //                  Image/bitmap
  38 //--------------------------------------------------------------------------------
  39
  40 class wxHtmlImageCell : public wxHtmlCell
  41 {
  42     public:
  43         wxBitmap *m_Image;
  44
  45         wxHtmlImageCell(wxFSFile *input, int w = -1, int h = -1, int align = HTML_ALIGN_BOTTOM);
  46         ~wxHtmlImageCell() {if (m_Image) delete m_Image;}
  47         void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2);
  48 };
  49
  50
  51
  52 //--------------------------------------------------------------------------------
  53 // wxHtmlImageCell
  54 //--------------------------------------------------------------------------------
  55
  56 wxHtmlImageCell::wxHtmlImageCell(wxFSFile *input, int w, int h, int align) : wxHtmlCell()
  57 {
  58     wxImage *img;
  59     int ww, hh;
  60     wxString m = input -> GetMimeType();
  61     wxInputStream *s = input -> GetStream();
  62
  63 #if wxVERSION_NUMBER < 2100
  64 /* NOTE : use this *old* code only if you have old 2.0.1 wxWindows distribution
  65    and don't want to upgrade it with stuffs from add-on/wxwin201 */
  66          if (wxMimeTypesManager::IsOfType(m, "image/png"))  img = new wxImage(*s, wxBITMAP_TYPE_PNG);
  67     else if (wxMimeTypesManager::IsOfType(m, "image/jpeg")) img = new wxImage(*s, wxBITMAP_TYPE_JPEG);
  68     else if (wxMimeTypesManager::IsOfType(m, "image/bmp"))  img = new wxImage(*s, wxBITMAP_TYPE_BMP);
  69     else if (wxMimeTypesManager::IsOfType(m, "image/gif"))  img = new wxImage(*s, wxBITMAP_TYPE_GIF);
  70     else if (wxMimeTypesManager::IsOfType(m, "image/tiff")) img = new wxImage(*s, wxBITMAP_TYPE_TIF);
  71     else if (wxMimeTypesManager::IsOfType(m, "image/xpm"))  img = new wxImage(*s, wxBITMAP_TYPE_XPM);
  72     else if (wxMimeTypesManager::IsOfType(m, "image/xbm"))  img = new wxImage(*s, wxBITMAP_TYPE_XBM);
  73     else img = NULL;
  74 #else
  75     img = new wxImage(*s, m);
  76 #endif
  77
  78     m_Image = NULL;
  79     if (img && (img -> Ok())) {
  80         ww = img -> GetWidth();
  81         hh = img -> GetHeight();
  82         if (w != -1) m_Width = w; else m_Width = ww;
  83         if (h != -1) m_Height = h; else m_Height = hh;
  84         if ((m_Width != ww) || (m_Height != hh)) {
  85             wxImage img2 = img -> Scale(m_Width, m_Height);
  86             m_Image = new wxBitmap(img2.ConvertToBitmap());
  87         }
  88         else
  89             m_Image = new wxBitmap(img -> ConvertToBitmap());
  90         delete img;
  91     }
  92     switch (align) {
  93         case HTML_ALIGN_TOP :
  94                         m_Descent = m_Height; break;
  95         case HTML_ALIGN_CENTER :
  96                         m_Descent = m_Height / 2; break;
  97         case HTML_ALIGN_BOTTOM : default :
  98                         m_Descent = 0; break;
  99     }
 100 }
 101
 102
 103
 104 void wxHtmlImageCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
 105 {
 106     if (m_Image)
 107         dc.DrawBitmap(*m_Image, x + m_PosX, y + m_PosY, TRUE);
 108     wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
 109 }
 110
 111
 112
 113
 114
 115 //--------------------------------------------------------------------------------
 116 // tag handler
 117 //--------------------------------------------------------------------------------
 118
 119 TAG_HANDLER_BEGIN(IMG, "IMG")
 120
 121     TAG_HANDLER_PROC(tag)
 122     {
 123         if (tag.HasParam("SRC")) {
 124             int w = -1, h = -1;
 125             int al;
 126             wxFSFile *str;
 127             wxString tmp = tag.GetParam("SRC");
 128
 129             str = m_WParser -> GetFS() -> OpenFile(tmp);
 130             if (tag.HasParam("WIDTH")) tag.ScanParam("WIDTH", "%i", &w);
 131             if (tag.HasParam("HEIGHT")) tag.ScanParam("HEIGHT", "%i", &h);
 132             al = HTML_ALIGN_BOTTOM;
 133             if (tag.HasParam("ALIGN")) {
 134                 wxString alstr = tag.GetParam("ALIGN");
 135                 alstr.MakeUpper(); // for the case alignment was in ".."
 136                 if (alstr == "TEXTTOP") al = HTML_ALIGN_TOP;
 137                 else if ((alstr == "CENTER") || (alstr == "ABSCENTER")) al = HTML_ALIGN_CENTER;
 138             }
 139             if (str) {
 140                 wxHtmlCell *cel = new wxHtmlImageCell(str, w, h, al);
 141                 cel -> SetLink(m_WParser -> GetLink());
 142                 m_WParser -> GetContainer() -> InsertCell(cel);
 143                 delete str;
 144             }
 145         }
 146
 147         return FALSE;
 148     }
 149
 150 TAG_HANDLER_END(IMAGE)
 151
 152
 153
 154 TAGS_MODULE_BEGIN(Image)
 155
 156     TAGS_MODULE_ADD(IMG)
 157
 158 TAGS_MODULE_END(Image)
 159
 160
 161 #endif