src/msw/gdiimage.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        msw/gdiimage.cpp
// Purpose:     wxGDIImage implementation
// Author:      Vadim Zeitlin
// Modified by:
// Created:     20.11.99
// RCS-ID:      $Id$
// Copyright:   (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence:     wxWindows license
///////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

#ifdef __GNUG__
    #pragma implementation "gdiimage.h"
#endif

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#ifndef WX_PRECOMP
    #include "wx/string.h"
    #include "wx/log.h"
#endif // WX_PRECOMP

#include "wx/msw/private.h"

#include "wx/app.h"

#ifndef __WXMICROWIN__
#include "wx/msw/dib.h"
#endif

#include "wx/msw/bitmap.h"
#include "wx/msw/gdiimage.h"
#include "wx/bitmap.h"

#ifdef __WIN16__
#   include "wx/msw/curico.h"
#endif // __WIN16__

// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------

#ifndef __WXMICROWIN__

// all image handlers are declared/defined in this file because the outside
// world doesn't have to know about them (but only about wxBITMAP_TYPE_XXX ids)

class WXDLLEXPORT wxBMPFileHandler : public wxBitmapHandler
{
public:
    wxBMPFileHandler() : wxBitmapHandler(_T("Windows bitmap file"), _T("bmp"),
                                         wxBITMAP_TYPE_BMP)
    {
    }

    virtual bool LoadFile(wxBitmap *bitmap,
                          const wxString& name, long flags,
                          int desiredWidth, int desiredHeight);
    virtual bool SaveFile(wxBitmap *bitmap,
                          const wxString& name, int type,
                          const wxPalette *palette = NULL);

private:
    DECLARE_DYNAMIC_CLASS(wxBMPFileHandler)
};

class WXDLLEXPORT wxBMPResourceHandler: public wxBitmapHandler
{
public:
    wxBMPResourceHandler() : wxBitmapHandler(_T("Windows bitmap resource"),
                                             wxEmptyString,
                                             wxBITMAP_TYPE_BMP_RESOURCE)
    {
    }

    virtual bool LoadFile(wxBitmap *bitmap,
                          const wxString& name, long flags,
                          int desiredWidth, int desiredHeight);

private:
    DECLARE_DYNAMIC_CLASS(wxBMPResourceHandler)
};

class WXDLLEXPORT wxIconHandler : public wxGDIImageHandler
{
public:
    wxIconHandler(const wxString& name, const wxString& ext, long type)
        : wxGDIImageHandler(name, ext, type)
    {
    }

    // creating and saving icons is not supported
    virtual bool Create(wxGDIImage *WXUNUSED(image),
                        void *WXUNUSED(data),
                        long WXUNUSED(flags),
                        int WXUNUSED(width),
                        int WXUNUSED(height),
                        int WXUNUSED(depth) = 1)
    {
        return FALSE;
    }

    virtual bool Save(wxGDIImage *WXUNUSED(image),
                      const wxString& WXUNUSED(name),
                      int WXUNUSED(type))
    {
        return FALSE;
    }

    virtual bool Load(wxGDIImage *image,
                      const wxString& name,
                      long flags,
                      int desiredWidth, int desiredHeight)
    {
        wxIcon *icon = wxDynamicCast(image, wxIcon);
        wxCHECK_MSG( icon, FALSE, _T("wxIconHandler only works with icons") );

        return LoadIcon(icon, name, flags, desiredWidth, desiredHeight);
    }

protected:
    virtual bool LoadIcon(wxIcon *icon,
                          const wxString& name, long flags,
                          int desiredWidth = -1, int desiredHeight = -1) = 0;
};

class WXDLLEXPORT wxICOFileHandler : public wxIconHandler
{
public:
    wxICOFileHandler() : wxIconHandler(_T("ICO icon file"),
                                       _T("ico"),
                                       wxBITMAP_TYPE_ICO)
    {
    }

    virtual bool LoadIcon(wxIcon *icon,
                          const wxString& name, long flags,
                          int desiredWidth = -1, int desiredHeight = -1);

private:
    DECLARE_DYNAMIC_CLASS(wxICOFileHandler)
};

class WXDLLEXPORT wxICOResourceHandler: public wxIconHandler
{
public:
    wxICOResourceHandler() : wxIconHandler(_T("ICO resource"),
                                           _T("ico"),
                                           wxBITMAP_TYPE_ICO_RESOURCE)
    {
    }

    virtual bool LoadIcon(wxIcon *icon,
                          const wxString& name, long flags,
                          int desiredWidth = -1, int desiredHeight = -1);

private:
    DECLARE_DYNAMIC_CLASS(wxICOResourceHandler)
};

// ----------------------------------------------------------------------------
// wxWin macros
// ----------------------------------------------------------------------------

    IMPLEMENT_DYNAMIC_CLASS(wxBMPFileHandler, wxBitmapHandler)
    IMPLEMENT_DYNAMIC_CLASS(wxBMPResourceHandler, wxBitmapHandler)
    IMPLEMENT_DYNAMIC_CLASS(wxICOFileHandler, wxGDIImageHandler)
    IMPLEMENT_DYNAMIC_CLASS(wxICOResourceHandler, wxGDIImageHandler)

// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------

static wxSize GetHiconSize(HICON hicon);
#endif
    // __MICROWIN__

// ============================================================================
// implementation
// ============================================================================

wxList wxGDIImage::ms_handlers;

// ----------------------------------------------------------------------------
// wxGDIImage functions forwarded to wxGDIImageRefData
// ----------------------------------------------------------------------------

bool wxGDIImage::FreeResource(bool WXUNUSED(force))
{
    if ( !IsNull() )
    {
        GetGDIImageData()->Free();
        GetGDIImageData()->m_handle = 0;
    }

    return TRUE;
}

WXHANDLE wxGDIImage::GetResourceHandle()
{
    return GetHandle();
}

// ----------------------------------------------------------------------------
// wxGDIImage handler stuff
// ----------------------------------------------------------------------------

void wxGDIImage::AddHandler(wxGDIImageHandler *handler)
{
    ms_handlers.Append(handler);
}

void wxGDIImage::InsertHandler(wxGDIImageHandler *handler)
{
    ms_handlers.Insert(handler);
}

bool wxGDIImage::RemoveHandler(const wxString& name)
{
    wxGDIImageHandler *handler = FindHandler(name);
    if ( handler )
    {
        ms_handlers.DeleteObject(handler);
        return TRUE;
    }
    else
        return FALSE;
}

wxGDIImageHandler *wxGDIImage::FindHandler(const wxString& name)
{
    wxNode *node = ms_handlers.First();
    while ( node )
    {
        wxGDIImageHandler *handler = (wxGDIImageHandler *)node->Data();
        if ( handler->GetName() == name )
            return handler;
        node = node->Next();
    }

    return NULL;
}

wxGDIImageHandler *wxGDIImage::FindHandler(const wxString& extension,
                                           long type)
{
    wxNode *node = ms_handlers.First();
    while ( node )
    {
        wxGDIImageHandler *handler = (wxGDIImageHandler *)node->Data();
        if ( (handler->GetExtension() = extension) &&
             (type == -1 || handler->GetType() == type) )
        {
            return handler;
        }

        node = node->Next();
    }
    return NULL;
}

wxGDIImageHandler *wxGDIImage::FindHandler(long type)
{
    wxNode *node = ms_handlers.First();
    while ( node )
    {
        wxGDIImageHandler *handler = (wxGDIImageHandler *)node->Data();
        if ( handler->GetType() == type )
            return handler;

        node = node->Next();
    }

    return NULL;
}

void wxGDIImage::CleanUpHandlers()
{
    wxNode *node = ms_handlers.First();
    while ( node )
    {
        wxGDIImageHandler *handler = (wxGDIImageHandler *)node->Data();
        wxNode *next = node->Next();
        delete handler;
        delete node;
        node = next;
    }
}

void wxGDIImage::InitStandardHandlers()
{
#ifndef __WXMICROWIN__
    AddHandler(new wxBMPResourceHandler);
    AddHandler(new wxBMPFileHandler);
    AddHandler(new wxICOResourceHandler);
    AddHandler(new wxICOFileHandler);
#endif
}

#ifndef __WXMICROWIN__

// ----------------------------------------------------------------------------
// wxBitmap handlers
// ----------------------------------------------------------------------------

bool wxBMPResourceHandler::LoadFile(wxBitmap *bitmap,
                                    const wxString& name, long WXUNUSED(flags),
                                    int WXUNUSED(desiredWidth),
                                    int WXUNUSED(desiredHeight))
{
    // TODO: load colourmap.
    bitmap->SetHBITMAP((WXHBITMAP)::LoadBitmap(wxGetInstance(), name));

    wxBitmapRefData *data = bitmap->GetBitmapData();
    if ( bitmap->Ok() )
    {
        BITMAP bm;
        if ( !::GetObject(GetHbitmapOf(*bitmap), sizeof(BITMAP), (LPSTR) &bm) )
        {
            wxLogLastError(wxT("GetObject(HBITMAP)"));
        }

        data->m_width = bm.bmWidth;
        data->m_height = bm.bmHeight;
        data->m_depth = bm.bmBitsPixel;
    }
    else
    {
        // it's probably not found
        wxLogError(wxT("Can't load bitmap '%s' from resources! Check .rc file."),
                   name.c_str());
    }

    return bitmap->Ok();
}

bool wxBMPFileHandler::LoadFile(wxBitmap *bitmap,
                                const wxString& name, long WXUNUSED(flags),
                                int WXUNUSED(desiredWidth),
                                int WXUNUSED(desiredHeight))
{
#if wxUSE_IMAGE_LOADING_IN_MSW
    wxPalette *palette = NULL;
    bool success = wxLoadIntoBitmap(WXSTRINGCAST name, bitmap, &palette) != 0;
    if ( success && palette )
    {
        bitmap->SetPalette(*palette);
    }

    // it was copied by the bitmap if it was loaded successfully
    delete palette;

    return success;
#else
    return FALSE;
#endif
}

bool wxBMPFileHandler::SaveFile(wxBitmap *bitmap,
                                const wxString& name,
                                int WXUNUSED(type),
                                const wxPalette *pal)
{
#if wxUSE_IMAGE_LOADING_IN_MSW
    wxPalette *actualPalette = (wxPalette *)pal;
    if ( !actualPalette )
        actualPalette = bitmap->GetPalette();
    return wxSaveBitmap(WXSTRINGCAST name, bitmap, actualPalette) != 0;
#else
    return FALSE;
#endif
}

// ----------------------------------------------------------------------------
// wxIcon handlers
// ----------------------------------------------------------------------------

bool wxICOFileHandler::LoadIcon(wxIcon *icon,
                                const wxString& name,
                                long WXUNUSED(flags),
                                int desiredWidth, int desiredHeight)
{
#if wxUSE_RESOURCE_LOADING_IN_MSW
    icon->UnRef();

    // actual size
    wxSize size;

#ifdef __WIN32__
    HICON hicon = NULL;

    // were we asked for a large icon?
    if ( desiredWidth == ::GetSystemMetrics(SM_CXICON) &&
         desiredHeight == ::GetSystemMetrics(SM_CYICON) )
    {
        // get the first large icon from file
        if ( !::ExtractIconEx(name, 0, &hicon, NULL, 1) )
        {
            // it is not an error, but it might still be useful to be informed
            // about it optionally
            wxLogTrace(_T("iconload"),
                       _T("No large icons found in the file '%s'."),
                       name.c_str());
        }
    }
    else if ( desiredWidth == ::GetSystemMetrics(SM_CXSMICON) &&
              desiredHeight == ::GetSystemMetrics(SM_CYSMICON) )
    {
        // get the first small icon from file
        if ( !::ExtractIconEx(name, 0, NULL, &hicon, 1) )
        {
            wxLogTrace(_T("iconload"),
                       _T("No small icons found in the file '%s'."),
                       name.c_str());
        }
    }
    //else: not standard size, load below

    if ( !hicon )
    {
        // take any (the first one) icon from the file by default
        hicon = ::ExtractIcon(wxGetInstance(), name, 0 /* first */);
    }

    if ( !hicon )
    {
        wxLogSysError(_T("Failed to load icon from the file '%s'"),
                      name.c_str());

        return FALSE;
    }

    size = GetHiconSize(hicon);
#else // Win16
    HICON hicon = ReadIconFile((wxChar *)name.c_str(),
                               wxGetInstance(),
                               &size.x, &size.y);
#endif // Win32/Win16

    if ( (desiredWidth != -1 && desiredWidth != size.x) ||
         (desiredHeight != -1 && desiredHeight != size.y) )
    {
        wxLogTrace(_T("iconload"),
                   _T("Returning FALSE from wxICOFileHandler::Load because of the size mismatch: actual (%d, %d), requested (%d, %d)"),
                   size.x, size.y,
                   desiredWidth, desiredHeight);

        ::DestroyIcon(hicon);

        return FALSE;
    }

    icon->SetHICON((WXHICON)hicon);
    icon->SetSize(size.x, size.y);

    return icon->Ok();
#else
    return FALSE;
#endif
}

bool wxICOResourceHandler::LoadIcon(wxIcon *icon,
                                    const wxString& name,
                                    long WXUNUSED(flags),
                                    int desiredWidth, int desiredHeight)
{
    HICON hicon;

#if defined(__WIN32__) && !defined(__SC__)
    if ( desiredWidth != -1 && desiredHeight != -1 )
    {
        hicon = (HICON)::LoadImage(wxGetInstance(), name, IMAGE_ICON,
                                    desiredWidth, desiredHeight,
                                    LR_DEFAULTCOLOR);
    }
    else
#endif // Win32
    {
        hicon = ::LoadIcon(wxGetInstance(), name);
    }

    wxSize size = GetHiconSize(hicon);
    icon->SetSize(size.x, size.y);

    // Override the found values with desired values
    if ( desiredWidth > -1 && desiredHeight > -1 )
    {
        icon->SetSize(desiredWidth, desiredHeight);
    }

    icon->SetHICON((WXHICON)hicon);

    return icon->Ok();
}

// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------

static wxSize GetHiconSize(HICON hicon)
{
    wxSize size(32, 32);    // default

#ifdef __WIN32__
    // Win32s doesn't have GetIconInfo function...
    if ( hicon && wxGetOsVersion() != wxWIN32S )
    {
        ICONINFO info;
        if ( !::GetIconInfo(hicon, &info) )
        {
            wxLogLastError(wxT("GetIconInfo"));
        }
        else
        {
            HBITMAP hbmp = info.hbmMask;
            if ( hbmp )
            {
                BITMAP bm;
                if ( ::GetObject(hbmp, sizeof(BITMAP), (LPSTR) &bm) )
                {
                    size = wxSize(bm.bmWidth, bm.bmHeight);
                }

                ::DeleteObject(info.hbmMask);
            }
            if ( info.hbmColor )
                ::DeleteObject(info.hbmColor);
        }
    }
#endif

    return size;
}
#endif
    // __WXMICROWIN__
Commit	Line	Data
	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: msw/gdiimage.cpp
	3	// Purpose: wxGDIImage implementation
	4	// Author: Vadim Zeitlin
	5	// Modified by:
	6	// Created: 20.11.99
	7	// RCS-ID: $Id$
	8	// Copyright: (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
	9	// Licence: wxWindows license
	10	///////////////////////////////////////////////////////////////////////////////
	11
	12	// ============================================================================
	13	// declarations
	14	// ============================================================================
	15
	16	// ----------------------------------------------------------------------------
	17	// headers
	18	// ----------------------------------------------------------------------------
	19
	20	#ifdef __GNUG__
	21	#pragma implementation "gdiimage.h"
	22	#endif
	23
	24	// For compilers that support precompilation, includes "wx.h".
	25	#include "wx/wxprec.h"
	26
	27	#ifdef __BORLANDC__
	28	#pragma hdrstop
	29	#endif
	30
	31	#ifndef WX_PRECOMP
	32	#include "wx/string.h"
	33	#include "wx/log.h"
	34	#endif // WX_PRECOMP
	35
	36	#include "wx/msw/private.h"
	37
	38	#include "wx/app.h"
	39
	40	#ifndef __WXMICROWIN__
	41	#include "wx/msw/dib.h"
	42	#endif
	43
	44	#include "wx/msw/bitmap.h"
	45	#include "wx/msw/gdiimage.h"
	46	#include "wx/bitmap.h"
	47
	48	#ifdef __WIN16__
	49	# include "wx/msw/curico.h"
	50	#endif // __WIN16__
	51
	52	// ----------------------------------------------------------------------------
	53	// private classes
	54	// ----------------------------------------------------------------------------
	55
	56	#ifndef __WXMICROWIN__
	57
	58	// all image handlers are declared/defined in this file because the outside
	59	// world doesn't have to know about them (but only about wxBITMAP_TYPE_XXX ids)
	60
	61	class WXDLLEXPORT wxBMPFileHandler : public wxBitmapHandler
	62	{
	63	public:
	64	wxBMPFileHandler() : wxBitmapHandler(_T("Windows bitmap file"), _T("bmp"),
	65	wxBITMAP_TYPE_BMP)
	66	{
	67	}
	68
	69	virtual bool LoadFile(wxBitmap *bitmap,
	70	const wxString& name, long flags,
	71	int desiredWidth, int desiredHeight);
	72	virtual bool SaveFile(wxBitmap *bitmap,
	73	const wxString& name, int type,
	74	const wxPalette *palette = NULL);
	75
	76	private:
	77	DECLARE_DYNAMIC_CLASS(wxBMPFileHandler)
	78	};
	79
	80	class WXDLLEXPORT wxBMPResourceHandler: public wxBitmapHandler
	81	{
	82	public:
	83	wxBMPResourceHandler() : wxBitmapHandler(_T("Windows bitmap resource"),
	84	wxEmptyString,
	85	wxBITMAP_TYPE_BMP_RESOURCE)
	86	{
	87	}
	88
	89	virtual bool LoadFile(wxBitmap *bitmap,
	90	const wxString& name, long flags,
	91	int desiredWidth, int desiredHeight);
	92
	93	private:
	94	DECLARE_DYNAMIC_CLASS(wxBMPResourceHandler)
	95	};
	96
	97	class WXDLLEXPORT wxIconHandler : public wxGDIImageHandler
	98	{
	99	public:
	100	wxIconHandler(const wxString& name, const wxString& ext, long type)
	101	: wxGDIImageHandler(name, ext, type)
	102	{
	103	}
	104
	105	// creating and saving icons is not supported
	106	virtual bool Create(wxGDIImage *WXUNUSED(image),
	107	void *WXUNUSED(data),
	108	long WXUNUSED(flags),
	109	int WXUNUSED(width),
	110	int WXUNUSED(height),
	111	int WXUNUSED(depth) = 1)
	112	{
	113	return FALSE;
	114	}
	115
	116	virtual bool Save(wxGDIImage *WXUNUSED(image),
	117	const wxString& WXUNUSED(name),
	118	int WXUNUSED(type))
	119	{
	120	return FALSE;
	121	}
	122
	123	virtual bool Load(wxGDIImage *image,
	124	const wxString& name,
	125	long flags,
	126	int desiredWidth, int desiredHeight)
	127	{
	128	wxIcon *icon = wxDynamicCast(image, wxIcon);
	129	wxCHECK_MSG( icon, FALSE, _T("wxIconHandler only works with icons") );
	130
	131	return LoadIcon(icon, name, flags, desiredWidth, desiredHeight);
	132	}
	133
	134	protected:
	135	virtual bool LoadIcon(wxIcon *icon,
	136	const wxString& name, long flags,
	137	int desiredWidth = -1, int desiredHeight = -1) = 0;
	138	};
	139
	140	class WXDLLEXPORT wxICOFileHandler : public wxIconHandler
	141	{
	142	public:
	143	wxICOFileHandler() : wxIconHandler(_T("ICO icon file"),
	144	_T("ico"),
	145	wxBITMAP_TYPE_ICO)
	146	{
	147	}
	148
	149	virtual bool LoadIcon(wxIcon *icon,
	150	const wxString& name, long flags,
	151	int desiredWidth = -1, int desiredHeight = -1);
	152
	153	private:
	154	DECLARE_DYNAMIC_CLASS(wxICOFileHandler)
	155	};
	156
	157	class WXDLLEXPORT wxICOResourceHandler: public wxIconHandler
	158	{
	159	public:
	160	wxICOResourceHandler() : wxIconHandler(_T("ICO resource"),
	161	_T("ico"),
	162	wxBITMAP_TYPE_ICO_RESOURCE)
	163	{
	164	}
	165
	166	virtual bool LoadIcon(wxIcon *icon,
	167	const wxString& name, long flags,
	168	int desiredWidth = -1, int desiredHeight = -1);
	169
	170	private:
	171	DECLARE_DYNAMIC_CLASS(wxICOResourceHandler)
	172	};
	173
	174	// ----------------------------------------------------------------------------
	175	// wxWin macros
	176	// ----------------------------------------------------------------------------
	177
	178	IMPLEMENT_DYNAMIC_CLASS(wxBMPFileHandler, wxBitmapHandler)
	179	IMPLEMENT_DYNAMIC_CLASS(wxBMPResourceHandler, wxBitmapHandler)
	180	IMPLEMENT_DYNAMIC_CLASS(wxICOFileHandler, wxGDIImageHandler)
	181	IMPLEMENT_DYNAMIC_CLASS(wxICOResourceHandler, wxGDIImageHandler)
	182
	183	// ----------------------------------------------------------------------------
	184	// private functions
	185	// ----------------------------------------------------------------------------
	186
	187	static wxSize GetHiconSize(HICON hicon);
	188	#endif
	189	// __MICROWIN__
	190
	191	// ============================================================================
	192	// implementation
	193	// ============================================================================
	194
	195	wxList wxGDIImage::ms_handlers;
	196
	197	// ----------------------------------------------------------------------------
	198	// wxGDIImage functions forwarded to wxGDIImageRefData
	199	// ----------------------------------------------------------------------------
	200
	201	bool wxGDIImage::FreeResource(bool WXUNUSED(force))
	202	{
	203	if ( !IsNull() )
	204	{
	205	GetGDIImageData()->Free();
	206	GetGDIImageData()->m_handle = 0;
	207	}
	208
	209	return TRUE;
	210	}
	211
	212	WXHANDLE wxGDIImage::GetResourceHandle()
	213	{
	214	return GetHandle();
	215	}
	216
	217	// ----------------------------------------------------------------------------
	218	// wxGDIImage handler stuff
	219	// ----------------------------------------------------------------------------
	220
	221	void wxGDIImage::AddHandler(wxGDIImageHandler *handler)
	222	{
	223	ms_handlers.Append(handler);
	224	}
	225
	226	void wxGDIImage::InsertHandler(wxGDIImageHandler *handler)
	227	{
	228	ms_handlers.Insert(handler);
	229	}
	230
	231	bool wxGDIImage::RemoveHandler(const wxString& name)
	232	{
	233	wxGDIImageHandler *handler = FindHandler(name);
	234	if ( handler )
	235	{
	236	ms_handlers.DeleteObject(handler);
	237	return TRUE;
	238	}
	239	else
	240	return FALSE;
	241	}
	242
	243	wxGDIImageHandler *wxGDIImage::FindHandler(const wxString& name)
	244	{
	245	wxNode *node = ms_handlers.First();
	246	while ( node )
	247	{
	248	wxGDIImageHandler handler = (wxGDIImageHandler )node->Data();
	249	if ( handler->GetName() == name )
	250	return handler;
	251	node = node->Next();
	252	}
	253
	254	return NULL;
	255	}
	256
	257	wxGDIImageHandler *wxGDIImage::FindHandler(const wxString& extension,
	258	long type)
	259	{
	260	wxNode *node = ms_handlers.First();
	261	while ( node )
	262	{
	263	wxGDIImageHandler handler = (wxGDIImageHandler )node->Data();
	264	if ( (handler->GetExtension() = extension) &&
	265	(type == -1 \|\| handler->GetType() == type) )
	266	{
	267	return handler;
	268	}
	269
	270	node = node->Next();
	271	}
	272	return NULL;
	273	}
	274
	275	wxGDIImageHandler *wxGDIImage::FindHandler(long type)
	276	{
	277	wxNode *node = ms_handlers.First();
	278	while ( node )
	279	{
	280	wxGDIImageHandler handler = (wxGDIImageHandler )node->Data();
	281	if ( handler->GetType() == type )
	282	return handler;
	283
	284	node = node->Next();
	285	}
	286
	287	return NULL;
	288	}
	289
	290	void wxGDIImage::CleanUpHandlers()
	291	{
	292	wxNode *node = ms_handlers.First();
	293	while ( node )
	294	{
	295	wxGDIImageHandler handler = (wxGDIImageHandler )node->Data();
	296	wxNode *next = node->Next();
	297	delete handler;
	298	delete node;
	299	node = next;
	300	}
	301	}
	302
	303	void wxGDIImage::InitStandardHandlers()
	304	{
	305	#ifndef __WXMICROWIN__
	306	AddHandler(new wxBMPResourceHandler);
	307	AddHandler(new wxBMPFileHandler);
	308	AddHandler(new wxICOResourceHandler);
	309	AddHandler(new wxICOFileHandler);
	310	#endif
	311	}
	312
	313	#ifndef __WXMICROWIN__
	314
	315	// ----------------------------------------------------------------------------
	316	// wxBitmap handlers
	317	// ----------------------------------------------------------------------------
	318
	319	bool wxBMPResourceHandler::LoadFile(wxBitmap *bitmap,
	320	const wxString& name, long WXUNUSED(flags),
	321	int WXUNUSED(desiredWidth),
	322	int WXUNUSED(desiredHeight))
	323	{
	324	// TODO: load colourmap.
	325	bitmap->SetHBITMAP((WXHBITMAP)::LoadBitmap(wxGetInstance(), name));
	326
	327	wxBitmapRefData *data = bitmap->GetBitmapData();
	328	if ( bitmap->Ok() )
	329	{
	330	BITMAP bm;
	331	if ( !::GetObject(GetHbitmapOf(*bitmap), sizeof(BITMAP), (LPSTR) &bm) )
	332	{
	333	wxLogLastError(wxT("GetObject(HBITMAP)"));
	334	}
	335
	336	data->m_width = bm.bmWidth;
	337	data->m_height = bm.bmHeight;
	338	data->m_depth = bm.bmBitsPixel;
	339	}
	340	else
	341	{
	342	// it's probably not found
	343	wxLogError(wxT("Can't load bitmap '%s' from resources! Check .rc file."),
	344	name.c_str());
	345	}
	346
	347	return bitmap->Ok();
	348	}
	349
	350	bool wxBMPFileHandler::LoadFile(wxBitmap *bitmap,
	351	const wxString& name, long WXUNUSED(flags),
	352	int WXUNUSED(desiredWidth),
	353	int WXUNUSED(desiredHeight))
	354	{
	355	#if wxUSE_IMAGE_LOADING_IN_MSW
	356	wxPalette *palette = NULL;
	357	bool success = wxLoadIntoBitmap(WXSTRINGCAST name, bitmap, &palette) != 0;
	358	if ( success && palette )
	359	{
	360	bitmap->SetPalette(*palette);
	361	}
	362
	363	// it was copied by the bitmap if it was loaded successfully
	364	delete palette;
	365
	366	return success;
	367	#else
	368	return FALSE;
	369	#endif
	370	}
	371
	372	bool wxBMPFileHandler::SaveFile(wxBitmap *bitmap,
	373	const wxString& name,
	374	int WXUNUSED(type),
	375	const wxPalette *pal)
	376	{
	377	#if wxUSE_IMAGE_LOADING_IN_MSW
	378	wxPalette actualPalette = (wxPalette )pal;
	379	if ( !actualPalette )
	380	actualPalette = bitmap->GetPalette();
	381	return wxSaveBitmap(WXSTRINGCAST name, bitmap, actualPalette) != 0;
	382	#else
	383	return FALSE;
	384	#endif
	385	}
	386
	387	// ----------------------------------------------------------------------------
	388	// wxIcon handlers
	389	// ----------------------------------------------------------------------------
	390
	391	bool wxICOFileHandler::LoadIcon(wxIcon *icon,
	392	const wxString& name,
	393	long WXUNUSED(flags),
	394	int desiredWidth, int desiredHeight)
	395	{
	396	#if wxUSE_RESOURCE_LOADING_IN_MSW
	397	icon->UnRef();
	398
	399	// actual size
	400	wxSize size;
	401
	402	#ifdef __WIN32__
	403	HICON hicon = NULL;
	404
	405	// were we asked for a large icon?
	406	if ( desiredWidth == ::GetSystemMetrics(SM_CXICON) &&
	407	desiredHeight == ::GetSystemMetrics(SM_CYICON) )
	408	{
	409	// get the first large icon from file
	410	if ( !::ExtractIconEx(name, 0, &hicon, NULL, 1) )
	411	{
	412	// it is not an error, but it might still be useful to be informed
	413	// about it optionally
	414	wxLogTrace(_T("iconload"),
	415	_T("No large icons found in the file '%s'."),
	416	name.c_str());
	417	}
	418	}
	419	else if ( desiredWidth == ::GetSystemMetrics(SM_CXSMICON) &&
	420	desiredHeight == ::GetSystemMetrics(SM_CYSMICON) )
	421	{
	422	// get the first small icon from file
	423	if ( !::ExtractIconEx(name, 0, NULL, &hicon, 1) )
	424	{
	425	wxLogTrace(_T("iconload"),
	426	_T("No small icons found in the file '%s'."),
	427	name.c_str());
	428	}
	429	}
	430	//else: not standard size, load below
	431
	432	if ( !hicon )
	433	{
	434	// take any (the first one) icon from the file by default
	435	hicon = ::ExtractIcon(wxGetInstance(), name, 0 /* first */);
	436	}
	437
	438	if ( !hicon )
	439	{
	440	wxLogSysError(_T("Failed to load icon from the file '%s'"),
	441	name.c_str());
	442
	443	return FALSE;
	444	}
	445
	446	size = GetHiconSize(hicon);
	447	#else // Win16
	448	HICON hicon = ReadIconFile((wxChar *)name.c_str(),
	449	wxGetInstance(),
	450	&size.x, &size.y);
	451	#endif // Win32/Win16
	452
	453	if ( (desiredWidth != -1 && desiredWidth != size.x) \|\|
	454	(desiredHeight != -1 && desiredHeight != size.y) )
	455	{
	456	wxLogTrace(_T("iconload"),
	457	_T("Returning FALSE from wxICOFileHandler::Load because of the size mismatch: actual (%d, %d), requested (%d, %d)"),
	458	size.x, size.y,
	459	desiredWidth, desiredHeight);
	460
	461	::DestroyIcon(hicon);
	462
	463	return FALSE;
	464	}
	465
	466	icon->SetHICON((WXHICON)hicon);
	467	icon->SetSize(size.x, size.y);
	468
	469	return icon->Ok();
	470	#else
	471	return FALSE;
	472	#endif
	473	}
	474
	475	bool wxICOResourceHandler::LoadIcon(wxIcon *icon,
	476	const wxString& name,
	477	long WXUNUSED(flags),
	478	int desiredWidth, int desiredHeight)
	479	{
	480	HICON hicon;
	481
	482	#if defined(__WIN32__) && !defined(__SC__)
	483	if ( desiredWidth != -1 && desiredHeight != -1 )
	484	{
	485	hicon = (HICON)::LoadImage(wxGetInstance(), name, IMAGE_ICON,
	486	desiredWidth, desiredHeight,
	487	LR_DEFAULTCOLOR);
	488	}
	489	else
	490	#endif // Win32
	491	{
	492	hicon = ::LoadIcon(wxGetInstance(), name);
	493	}
	494
	495	wxSize size = GetHiconSize(hicon);
	496	icon->SetSize(size.x, size.y);
	497
	498	// Override the found values with desired values
	499	if ( desiredWidth > -1 && desiredHeight > -1 )
	500	{
	501	icon->SetSize(desiredWidth, desiredHeight);
	502	}
	503
	504	icon->SetHICON((WXHICON)hicon);
	505
	506	return icon->Ok();
	507	}
	508
	509	// ----------------------------------------------------------------------------
	510	// private functions
	511	// ----------------------------------------------------------------------------
	512
	513	static wxSize GetHiconSize(HICON hicon)
	514	{
	515	wxSize size(32, 32); // default
	516
	517	#ifdef __WIN32__
	518	// Win32s doesn't have GetIconInfo function...
	519	if ( hicon && wxGetOsVersion() != wxWIN32S )
	520	{
	521	ICONINFO info;
	522	if ( !::GetIconInfo(hicon, &info) )
	523	{
	524	wxLogLastError(wxT("GetIconInfo"));
	525	}
	526	else
	527	{
	528	HBITMAP hbmp = info.hbmMask;
	529	if ( hbmp )
	530	{
	531	BITMAP bm;
	532	if ( ::GetObject(hbmp, sizeof(BITMAP), (LPSTR) &bm) )
	533	{
	534	size = wxSize(bm.bmWidth, bm.bmHeight);
	535	}
	536
	537	::DeleteObject(info.hbmMask);
	538	}
	539	if ( info.hbmColor )
	540	::DeleteObject(info.hbmColor);
	541	}
	542	}
	543	#endif
	544
	545	return size;
	546	}
	547	#endif
	548	// __WXMICROWIN__