X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ef0e92205a01c7d0ca6f381cc690cb5d4fa595c9..f5fac4471b361f54ae6a09f6047ae4dbe30fcb86:/include/wx/osx/pngread.h

diff --git a/include/wx/osx/pngread.h b/include/wx/osx/pngread.h
index 7481e1d0d2..bdf466b8a3 100644
--- a/include/wx/osx/pngread.h
+++ b/include/wx/osx/pngread.h
@@ -1,5 +1,287 @@
-#ifdef __WXMAC_CLASSIC__
-#include "wx/osx/classic/pngread.h"
-#else
-#include "wx/osx/carbon/pngread.h"
+/*
+ * 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__
+
+#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() const { return IsOk(); }
+  inline bool IsOk(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
+