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# csgfx/memimage.h

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    00001 /*
    00002     Copyright (C) 2000 by Jorrit Tyberghein
    00003     Written by Samuel Humphreys
    00004
    00005     This library is free software; you can redistribute it and/or
    00006     modify it under the terms of the GNU Library General Public
    00007     License as published by the Free Software Foundation; either
    00008     version 2 of the License, or (at your option) any later version.
    00009
    00010     This library is distributed in the hope that it will be useful,
    00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
    00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00013     Library General Public License for more details.
    00014
    00015     You should have received a copy of the GNU Library General Public
    00016     License along with this library; if not, write to the Free
    00017     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
    00018 */
    00019
    00020 #ifndef __CS_CSGFX_MEMIMAGE_H__
    00021 #define __CS_CSGFX_MEMIMAGE_H__
    00022
    00023 #include "csextern.h"
    00024 #include "csutil/leakguard.h"
    00025 #include "csutil/scf_implementation.h"
    00026
    00027 #include "csgfx/imagebase.h"
    00028 #include "csgfx/imagetools.h"
    00029 #include "csgfx/rgbpixel.h"
    00030
    00040 class CS_CRYSTALSPACE_EXPORT csImageMemory :
    00041   public scfImplementationExt0<csImageMemory, csImageBase>
    00042 {
    00043 private:
    00045   void ConstructCommon();
    00047   void ConstructWHDF (int width, int height, int depth, int format);
    00049   void ConstructSource (iImage* source);
    00051   void ConstructBuffers (int width, int height, void* buffer,
    00052     bool destroy, int format, csRGBpixel *palette);
    00053 protected:
    00055   int Width;
    00057   int Height;
    00059   int Depth;
    00066   void* Image;
    00068   csRGBpixel *Palette;
    00070   uint8 *Alpha;
    00072   int Format;
    00074   bool has_keycolour;
    00076   csRGBpixel keycolour;
    00078   bool destroy_image;
    00080   csImageType imageType;
    00082   /* @@@ This is not csRefArray<iImage> as this does not return csRef<iImage>&
    00083    * from GetExtend() or operator[], which is needed here.
    00084    */
    00085   csArray<csRef<iImage> > mipmaps;
    00086
    00091   csImageMemory (int iFormat);
    00101   void SetDimensions (int newWidth, int newHeight);
    00102   void SetDimensions (int newWidth, int newHeight, int newDepth);
    00103
    00105   void AllocImage();
    00107   void EnsureImage();
    00111   void FreeImage ();
    00112 public:
    00113   CS_LEAKGUARD_DECLARE (csImageMemory);
    00114
    00122   csImageMemory (int width, int height, int format = CS_IMGFMT_TRUECOLOR);
    00131   csImageMemory (int width, int height, int depth, int format);
    00144   csImageMemory (int width, int height, void* buffer, bool destroy,
    00145     int format = CS_IMGFMT_TRUECOLOR, csRGBpixel *palette = 0);
    00156   csImageMemory (int width, int height, const void* buffer,
    00157     int format = CS_IMGFMT_TRUECOLOR, const csRGBpixel *palette = 0);
    00162   csImageMemory (iImage* source);
    00167   csImageMemory (iImage* source, int newFormat);
    00168
    00169   virtual ~csImageMemory ();
    00170
    00172   void* GetImagePtr ();
    00174   csRGBpixel* GetPalettePtr ();
    00176   uint8* GetAlphaPtr ();
    00177
    00178   virtual const void *GetImageData () { return GetImagePtr(); }
    00179   virtual int GetWidth () const { return Width; }
    00180   virtual int GetHeight () const { return Height; }
    00181   virtual int GetDepth () const { return Depth; }
    00182
    00183   virtual int GetFormat () const { return Format; }
    00184   virtual const csRGBpixel* GetPalette () { return GetPalettePtr(); }
    00185   virtual const uint8* GetAlpha () { return GetAlphaPtr(); }
    00186
    00187   virtual bool HasKeyColor () const { return has_keycolour; }
    00188
    00189   virtual void GetKeyColor (int &r, int &g, int &b) const
    00190   { r = keycolour.red; g = keycolour.green; b = keycolour.blue; }
    00191
    00193   void Clear (const csRGBpixel &colour);
    00194
    00196   void CheckAlpha ();
    00206   void SetFormat (int iFormat);
    00207
    00209   virtual void SetKeyColor (int r, int g, int b);
    00210   virtual void SetKeycolor (int r, int g, int b) { SetKeyColor(r,g,b); }
    00212   virtual void ClearKeyColor ();
    00213   virtual void ClearKeycolor () { ClearKeyColor(); }
    00214
    00219   virtual void ApplyKeyColor ();
    00220   virtual void ApplyKeycolor () { ApplyKeyColor(); }
    00221
    00222   virtual csImageType GetImageType() const { return imageType; }
    00223   void SetImageType (csImageType type) { imageType = type; }
    00224
    00225   virtual uint HasMipmaps () const
    00226   {
    00227     size_t num = mipmaps.Length();
    00228     while ((num > 0) && (mipmaps[num-1] == 0)) num--;
    00229     return (uint)num;
    00230   }
    00231   virtual csRef<iImage> GetMipmap (uint num)
    00232   {
    00233     if (num == 0) return this;
    00234     if (num <= mipmaps.Length()) return mipmaps[num-1];
    00235     return 0;
    00236   }
    00245   bool SetMipmap (uint num, iImage* mip)
    00246   {
    00247     if (num == 0) return false;
    00248     mipmaps.GetExtend (num-1) = mip;
    00249     return true;
    00250   }
    00251
    00253   bool Copy (iImage* srcImage, int x, int y, int width, int height);
    00258   bool CopyScale (iImage* srcImage, int x, int y, int width, int height);
    00263   bool CopyTile (iImage* srcImage, int x, int y, int width, int height);
    00264
    00276   void ConvertFromRGBA (csRGBpixel* iImage);
    00287   void ConvertFromPal8 (uint8* iImage, uint8* alpha, csRGBpixel* iPalette,
    00288     int nPalColors = 256);
    00299   void ConvertFromPal8 (uint8* iImage, uint8* alpha,
    00300     const csRGBcolor* iPalette, int nPalColors = 256);
    00301 };
    00302
    00305 #endif // __CS_CSGFX_MEMIMAGE_H__