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making wxHTML 8.3 compliant

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@3796 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Václav Slavík
1999-10-02 18:19:46 +00:00
parent 47f631042b
commit 69941f0586
41 changed files with 331 additions and 321 deletions
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src/html/m_image.cpp Normal file
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/////////////////////////////////////////////////////////////////////////////
// Name: mod_image.cpp
// Purpose: wxHtml module for displaying images
// Author: Vaclav Slavik
// RCS-ID: $Id$
// 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/forcelnk.h"
#include "wx/html/m_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