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