+++ /dev/null
-/////////////////////////////////////////////////////////////////////////////
-// Name: mod_image.cpp
-// Purpose: wxHtml module for displaying images
-// Author: Vaclav Slavik
-// Copyright: (c) 1999 Vaclav Slavik, Joel Lucsy
-// Licence: wxWindows Licence
-/////////////////////////////////////////////////////////////////////////////
-
-#ifdef __GNUG__
-#pragma implementation
-#endif
-
-#include "wx/wxprec.h"
-
-#include "wx/defs.h"
-#if wxUSE_HTML
-
-#ifdef __BORDLANDC__
-#pragma hdrstop
-#endif
-
-#ifndef WXPRECOMP
-#include "wx/wx.h"
-#endif
-
-#include "wx/html/forcelink.h"
-#include "wx/html/mod_templ.h"
-
-
-#include "wx/image.h"
-#include "wx/dynarray.h"
-
-#include <math.h>
-#include <float.h>
-
-FORCE_LINK_ME(mod_image)
-
-
-
-
-WX_DECLARE_OBJARRAY(int, CoordArray);
-#include <wx/arrimpl.cpp> // this is a magic incantation which must be done!
-WX_DEFINE_OBJARRAY(CoordArray);
-
-
-//--------------------------------------------------------------------------------
-// wxHtmlImageMapAreaCell
-// 0-width, 0-height cell that represents single area in imagemap
-// (it's GetLink is called from wxHtmlImageCell's)
-//--------------------------------------------------------------------------------
-
-class wxHtmlImageMapAreaCell : public wxHtmlCell
-{
-public:
- enum celltype{ CIRCLE, RECT, POLY };
-protected:
- CoordArray coords;
- celltype type;
- int radius;
-public:
- wxHtmlImageMapAreaCell( celltype t, wxString &coords );
- virtual wxString GetLink( int x = 0, int y = 0 ) const;
-};
-
-
-
-
-
-wxHtmlImageMapAreaCell::wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::celltype t, wxString &incoords )
-{
- int i;
- wxString x = incoords, y;
-
- type = t;
- while ((i = x.Find( ',' )) != -1)
- {
- coords.Add( atoi( x.Left( i ).c_str() ) );
- x = x.Mid( i + 1 );
- }
- coords.Add( atoi( x.c_str() ) );
-}
-
-wxString wxHtmlImageMapAreaCell::GetLink( int x, int y ) const
-{
- switch (type)
- {
- case RECT:
- {
- int l, t, r, b;
-
- l = coords[ 0 ];
- t = coords[ 1 ];
- r = coords[ 2 ];
- b = coords[ 3 ];
- if (x >= l && x <= r && y >= t && y <= b)
- {
- return m_Link;
- }
- break;
- }
- case CIRCLE:
- {
- int l, t, r;
- double d;
-
- l = coords[ 0 ];
- t = coords[ 1 ];
- r = coords[ 2 ];
- d = sqrt( ((x - l) * (x - l)) + ((y - t) * (y - t)) );
- if (d < (double)r)
- {
- return m_Link;
- }
- }
- break;
- case POLY:
- {
- if (coords.GetCount() >= 6)
- {
- int intersects = 0;
- int wherex = x;
- int wherey = y;
- int totalv = coords.GetCount() / 2;
- int totalc = totalv * 2;
- int xval = coords[totalc - 2];
- int yval = coords[totalc - 1];
- int end = totalc;
- int pointer = 1;
-
- if ((yval >= wherey) != (coords[pointer] >= wherey))
- {
- if ((xval >= wherex) == (coords[0] >= wherex))
- {
- intersects += (xval >= wherex) ? 1 : 0;
- }
- else
- {
- intersects += ((xval - (yval - wherey) *
- (coords[0] - xval) /
- (coords[pointer] - yval)) >= wherex) ? 1 : 0;
- }
- }
-
- while (pointer < end)
- {
- yval = coords[pointer];
- pointer += 2;
- if (yval >= wherey)
- {
- while((pointer < end) && (coords[pointer] >= wherey))
- {
- pointer+=2;
- }
- if (pointer >= end)
- {
- break;
- }
- if ((coords[pointer-3] >= wherex) ==
- (coords[pointer-1] >= wherex))
- {
- intersects += (coords[pointer-3] >= wherex) ? 1 : 0;
- }
- else
- {
- intersects +=
- ((coords[pointer-3] - (coords[pointer-2] - wherey) *
- (coords[pointer-1] - coords[pointer-3]) /
- (coords[pointer] - coords[pointer - 2])) >= wherex) ? 1:0;
- }
- }
- else
- {
- while((pointer < end) && (coords[pointer] < wherey))
- {
- pointer+=2;
- }
- if (pointer >= end)
- {
- break;
- }
- if ((coords[pointer-3] >= wherex) ==
- (coords[pointer-1] >= wherex))
- {
- intersects += (coords[pointer-3] >= wherex) ? 1:0;
- }
- else
- {
- intersects +=
- ((coords[pointer-3] - (coords[pointer-2] - wherey) *
- (coords[pointer-1] - coords[pointer-3]) /
- (coords[pointer] - coords[pointer - 2])) >= wherex) ? 1:0;
- }
- }
- }
- if ((intersects & 1) != 0)
- {
- return m_Link;
- }
- }
- }
- break;
- }
- if (m_Next)
- {
- wxHtmlImageMapAreaCell *a = (wxHtmlImageMapAreaCell*)m_Next;
- return a->GetLink( x, y );
- }
- return wxEmptyString;
-}
-
-
-
-
-
-
-
-
-//--------------------------------------------------------------------------------
-// wxHtmlImageMapCell
-// 0-width, 0-height cell that represents map from imagemaps
-// it is always placed before wxHtmlImageMapAreaCells
-// It responds to Find(HTML_COND_ISIMAGEMAP)
-//--------------------------------------------------------------------------------
-
-
-class wxHtmlImageMapCell : public wxHtmlCell
-{
-public:
- wxHtmlImageMapCell( wxString &name );
-protected:
- wxString m_Name;
-public:
- virtual wxString GetLink( int x = 0, int y = 0 ) const;
- virtual const wxHtmlCell *Find( int cond, const void *param ) const;
-};
-
-
-wxHtmlImageMapCell::wxHtmlImageMapCell( wxString &name )
-{
- m_Name = name ;
-}
-
-wxString wxHtmlImageMapCell::GetLink( int x, int y ) const
-{
- wxHtmlImageMapAreaCell *a = (wxHtmlImageMapAreaCell*)m_Next;
- if (a)
- return a->GetLink( x, y );
- return wxHtmlCell::GetLink( x, y );
-}
-
-const wxHtmlCell *wxHtmlImageMapCell::Find( int cond, const void *param ) const
-{
- if (cond == HTML_COND_ISIMAGEMAP)
- {
- if (m_Name == *((wxString*)(param)))
- return this;
- }
- return wxHtmlCell::Find(cond, param);
-}
-
-
-
-
-
-//--------------------------------------------------------------------------------
-// wxHtmlImageCell
-// Image/bitmap
-//--------------------------------------------------------------------------------
-
-class wxHtmlImageCell : public wxHtmlCell
-{
- public:
- wxBitmap *m_Image;
- wxHtmlImageMapCell *m_ImageMap;
- wxString m_MapName;
-
- wxHtmlImageCell(wxFSFile *input, int w = -1, int h = -1, int align = HTML_ALIGN_BOTTOM, wxString mapname = wxEmptyString);
- ~wxHtmlImageCell() {if (m_Image) delete m_Image;}
- void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2);
- virtual wxString GetLink( int x = 0, int y = 0 ) const;
-};
-
-
-
-
-//--------------------------------------------------------------------------------
-// wxHtmlImageCell
-//--------------------------------------------------------------------------------
-
-wxHtmlImageCell::wxHtmlImageCell(wxFSFile *input, int w, int h, int align, wxString mapname) : wxHtmlCell()
-{
- wxImage *img;
- int ww, hh;
- wxInputStream *s = input -> GetStream();
-
- img = new wxImage(*s, wxBITMAP_TYPE_ANY);
-
- m_Image = NULL;
- if (img && (img -> Ok())) {
- ww = img -> GetWidth();
- hh = img -> GetHeight();
- if (w != -1) m_Width = w; else m_Width = ww;
- if (h != -1) m_Height = h; else m_Height = hh;
- if ((m_Width != ww) || (m_Height != hh)) {
- wxImage img2 = img -> Scale(m_Width, m_Height);
- m_Image = new wxBitmap(img2.ConvertToBitmap());
- }
- else
- m_Image = new wxBitmap(img -> ConvertToBitmap());
- delete img;
- }
- switch (align) {
- case HTML_ALIGN_TOP :
- m_Descent = m_Height; break;
- case HTML_ALIGN_CENTER :
- m_Descent = m_Height / 2; break;
- case HTML_ALIGN_BOTTOM : default :
- m_Descent = 0; break;
- }
-
- m_ImageMap = NULL;
- m_MapName = mapname;
-}
-
-
-
-void wxHtmlImageCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
-{
- if (m_Image)
- dc.DrawBitmap(*m_Image, x + m_PosX, y + m_PosY, TRUE);
- wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
-}
-
-wxString wxHtmlImageCell::GetLink( int x, int y ) const
-{
- if (m_MapName.IsEmpty())
- return wxHtmlCell::GetLink( x, y );
- if (!m_ImageMap)
- {
- wxHtmlContainerCell *p, *op;
- op = p = GetParent();
- while (p)
- {
- op = p;
- p = p->GetParent();
- }
- p = op;
- wxHtmlCell *cell = (wxHtmlCell*)p->Find( HTML_COND_ISIMAGEMAP, (const void*)(&m_MapName));
- if (!cell)
- {
- ((wxString&)m_MapName).Clear();
- return wxHtmlCell::GetLink( x, y );
- }
- { // dirty hack, ask Joel why he fills m_ImageMap in this place
- // THE problem is that we're in const method and we can't modify m_ImageMap
- wxHtmlImageMapCell **cx = (wxHtmlImageMapCell**)(&m_ImageMap);
- *cx = (wxHtmlImageMapCell*)cell;
- }
- }
- return m_ImageMap->GetLink( x, y );
-}
-
-
-
-//--------------------------------------------------------------------------------
-// tag handler
-//--------------------------------------------------------------------------------
-
-TAG_HANDLER_BEGIN(IMG, "IMG, MAP, AREA")
-
- TAG_HANDLER_PROC(tag)
- {
- if (tag.GetName() == "IMG")
- {
- if (tag.HasParam("SRC")) {
- int w = -1, h = -1;
- int al;
- wxFSFile *str;
- wxString tmp = tag.GetParam("SRC");
- wxString mn = wxEmptyString;
-
- str = m_WParser -> GetFS() -> OpenFile(tmp);
- if (tag.HasParam("WIDTH")) tag.ScanParam("WIDTH", "%i", &w);
- if (tag.HasParam("HEIGHT")) tag.ScanParam("HEIGHT", "%i", &h);
- al = HTML_ALIGN_BOTTOM;
- if (tag.HasParam("ALIGN")) {
- wxString alstr = tag.GetParam("ALIGN");
- alstr.MakeUpper(); // for the case alignment was in ".."
- if (alstr == "TEXTTOP") al = HTML_ALIGN_TOP;
- else if ((alstr == "CENTER") || (alstr == "ABSCENTER")) al = HTML_ALIGN_CENTER;
- }
- if (tag.HasParam("USEMAP"))
- {
- mn = tag.GetParam( "USEMAP" );
- if (mn[ 0 ] == '#')
- {
- mn = mn.Mid( 1 );
- }
- }
- wxHtmlImageCell *cel = NULL;
- if (str) {
- cel = new wxHtmlImageCell(str, w, h, al, mn);
- cel -> SetLink(m_WParser -> GetLink());
- m_WParser -> GetContainer() -> InsertCell(cel);
- delete str;
- }
- }
- }
- if (tag.GetName() == "MAP")
- {
- m_WParser->CloseContainer();
- m_WParser->OpenContainer();
- if (tag.HasParam("NAME"))
- {
- wxString tmp = tag.GetParam("NAME");
- wxHtmlImageMapCell *cel = new wxHtmlImageMapCell( tmp );
- m_WParser->GetContainer()->InsertCell( cel );
- }
- ParseInner( tag );
- m_WParser->CloseContainer();
- m_WParser->OpenContainer();
- }
- if (tag.GetName() == "AREA")
- {
- if (tag.HasParam("SHAPE"))
- {
- wxString tmp = tag.GetParam("SHAPE");
- wxString coords;
- tmp.MakeUpper();
- wxHtmlImageMapAreaCell *cel = NULL;
- if (tag.HasParam("COORDS"))
- {
- coords = tag.GetParam("COORDS");
- }
- if (tmp == "POLY")
- {
- cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::POLY, coords );
- }
- else if (tmp == "CIRCLE")
- {
- cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::CIRCLE, coords );
- }
- else if (tmp == "RECT")
- {
- cel = new wxHtmlImageMapAreaCell( wxHtmlImageMapAreaCell::RECT, coords );
- }
- if (cel && tag.HasParam("HREF"))
- {
- wxString tmp = tag.GetParam("HREF");
- cel->SetLink( tmp );
- }
- m_WParser->GetContainer()->InsertCell( cel );
- }
- }
-
- return FALSE;
- }
-
-TAG_HANDLER_END(IMAGE)
-
-
-
-TAGS_MODULE_BEGIN(Image)
-
- TAGS_MODULE_ADD(IMG)
-
-TAGS_MODULE_END(Image)
-
-
-#endif
projects / wxWidgets.git / blobdiff