-/*
- * File: pngread.h
- * Purpose: PNG file reader
- * Author: Alejandro Aguilar Sierra/Julian Smart
- * Created: 1995
- * Copyright: (c) 1995, Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
- *
- *
- */
-
-#ifndef _WX_PNGREAD__
-#define _WX_PNGREAD__
-
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma interface "pngread.h"
+#ifdef __WXMAC_CLASSIC__
+#include "wx/mac/classic/pngread.h"
+#else
+#include "wx/mac/carbon/pngread.h"
#endif
-
-#ifndef byte
-typedef unsigned char byte;
-#endif
-
-#define WXIMA_COLORS DIB_PAL_COLORS
-
-typedef byte * ImagePointerType;
-
-typedef struct
-{
- byte red;
- byte green;
- byte blue;
-} rgb_color_struct;
-
-
-#define COLORTYPE_PALETTE 1
-#define COLORTYPE_COLOR 2
-#define COLORTYPE_ALPHA 4
-
-class wxPNGReader
-{
-protected:
- int filetype;
- char filename[255];
- ImagePointerType RawImage; // Image data
-
- int Width, Height; // Dimensions
- int Depth; // (bits x pixel)
- int ColorType; // Bit 1 = Palette used
- // Bit 2 = Color used
- // Bit 3 = Alpha used
-
- long EfeWidth; // Efective Width
-
- void *lpbi;
- int bgindex;
- wxPalette* m_palette;
- bool imageOK;
-friend class wxPNGReaderIter;
-public:
- wxPNGReader(void);
- wxPNGReader (char* ImageFileName); // Read an image file
- virtual ~wxPNGReader ();
-
- void Create(int width, int height, int deep, int colortype=-1);
-
- bool ReadFile( char* ImageFileName=0 );
- bool SaveFile( char* ImageFileName=0 );
- bool SaveXPM(char *filename, char *name = 0);
- int GetWidth( void ) const { return Width; };
- int GetHeight( void ) const { return Height; };
- int GetDepth( void ) const { return Depth; };
- int GetColorType( void ) const { return ColorType; };
-
- int GetIndex(int x, int y);
- bool GetRGB(int x, int y, byte* r, byte* g, byte* b);
-
- bool SetIndex(int x, int y, int index);
- bool SetRGB(int x, int y, byte r, byte g, byte b);
-
- // ColorMap settings
- bool SetPalette(wxPalette* colourmap);
- bool SetPalette(int n, rgb_color_struct *rgb_struct);
- bool SetPalette(int n, byte *r, byte *g=0, byte *b=0);
- wxPalette* GetPalette() const { return m_palette; }
-
- void NullData();
- inline int GetBGIndex(void) { return bgindex; }
-
- inline bool Inside(int x, int y)
- { return (0<=y && y<Height && 0<=x && x<Width); }
-
- virtual wxBitmap *GetBitmap(void);
- virtual bool InstantiateBitmap(wxBitmap *bitmap);
- wxMask *CreateMask(void);
-
- inline bool Ok(void) { return imageOK; }
-};
-
-class wxPNGReaderIter
-{
-protected:
- int Itx, Ity; // Counters
- int Stepx, Stepy;
- ImagePointerType IterImage; // Image pointer
- wxPNGReader *ima;
-public:
-// Constructors
- wxPNGReaderIter ( void );
- wxPNGReaderIter ( wxPNGReader *imax );
- operator wxPNGReader* ();
-
-// Iterators
- bool ItOK ();
- void reset ();
- void upset ();
- void SetRow(byte *buf, int n);
- void GetRow(byte *buf, int n);
- byte GetByte( ) { return IterImage[Itx]; }
- void SetByte(byte b) { IterImage[Itx] = b; }
- ImagePointerType GetRow(void);
- bool NextRow();
- bool PrevRow();
- bool NextByte();
- bool PrevByte();
-
- void SetSteps(int x, int y=0) { Stepx = x; Stepy = y; }
- void GetSteps(int *x, int *y) { *x = Stepx; *y = Stepy; }
- bool NextStep();
- bool PrevStep();
-
-////////////////////////// AD - for interlace ///////////////////////////////
- void SetY(int y);
-/////////////////////////////////////////////////////////////////////////////
-};
-
-
-inline
-wxPNGReaderIter::wxPNGReaderIter(void)
-{
- ima = 0;
- IterImage = 0;
- Itx = Ity = 0;
- Stepx = Stepy = 0;
-}
-
-inline
-wxPNGReaderIter::wxPNGReaderIter(wxPNGReader *imax): ima(imax)
-{
- if (ima)
- IterImage = ima->RawImage;
- Itx = Ity = 0;
- Stepx = Stepy = 0;
-}
-
-inline
-wxPNGReaderIter::operator wxPNGReader* ()
-{
- return ima;
-}
-
-inline
-bool wxPNGReaderIter::ItOK ()
-{
- if (ima)
- return ima->Inside(Itx, Ity);
- else
- return FALSE;
-}
-
-
-inline void wxPNGReaderIter::reset()
-{
- IterImage = ima->RawImage;
- Itx = Ity = 0;
-}
-
-inline void wxPNGReaderIter::upset()
-{
- Itx = 0;
- Ity = ima->Height-1;
- IterImage = ima->RawImage + ima->EfeWidth*(ima->Height-1);
-}
-
-inline bool wxPNGReaderIter::NextRow()
-{
- if (++Ity >= ima->Height) return 0;
- IterImage += ima->EfeWidth;
- return 1;
-}
-
-inline bool wxPNGReaderIter::PrevRow()
-{
- if (--Ity < 0) return 0;
- IterImage -= ima->EfeWidth;
- return 1;
-}
-
-////////////////////////// AD - for interlace ///////////////////////////////
-inline void wxPNGReaderIter::SetY(int y)
-{
- if ((y < 0) || (y > ima->Height)) return;
- Ity = y;
- IterImage = ima->RawImage + ima->EfeWidth*y;
-}
-
-/////////////////////////////////////////////////////////////////////////////
-
-inline void wxPNGReaderIter::SetRow(byte *buf, int n)
-{
-// Here should be bcopy or memcpy
- //_fmemcpy(IterImage, (void far *)buf, n);
- if (n<0)
- n = ima->GetWidth();
-
- for (int i=0; i<n; i++) IterImage[i] = buf[i];
-}
-
-inline void wxPNGReaderIter::GetRow(byte *buf, int n)
-{
- for (int i=0; i<n; i++) buf[i] = IterImage[i];
-}
-
-inline ImagePointerType wxPNGReaderIter::GetRow()
-{
- return IterImage;
-}
-
-inline bool wxPNGReaderIter::NextByte()
-{
- if (++Itx < ima->EfeWidth)
- return 1;
- else
- if (++Ity < ima->Height)
- {
- IterImage += ima->EfeWidth;
- Itx = 0;
- return 1;
- } else
- return 0;
-}
-
-inline bool wxPNGReaderIter::PrevByte()
-{
- if (--Itx >= 0)
- return 1;
- else
- if (--Ity >= 0)
- {
- IterImage -= ima->EfeWidth;
- Itx = 0;
- return 1;
- } else
- return 0;
-}
-
-inline bool wxPNGReaderIter::NextStep()
-{
- Itx += Stepx;
- if (Itx < ima->EfeWidth)
- return 1;
- else {
- Ity += Stepy;
- if (Ity < ima->Height)
- {
- IterImage += ima->EfeWidth;
- Itx = 0;
- return 1;
- } else
- return 0;
- }
-}
-
-inline bool wxPNGReaderIter::PrevStep()
-{
- Itx -= Stepx;
- if (Itx >= 0)
- return 1;
- else {
- Ity -= Stepy;
- if (Ity >= 0 && Ity < ima->Height)
- {
- IterImage -= ima->EfeWidth;
- Itx = 0;
- return 1;
- } else
- return 0;
- }
-}
-
-#endif
-
projects / wxWidgets.git / blobdiff