From 038b31f0158a0018dbf2eceb71026cc4e665faa9 Mon Sep 17 00:00:00 2001 From: Chris Xiong Date: Tue, 6 Oct 2015 21:28:40 +0800 Subject: Add the SMELT files... Please, do not laugh too loudly. --- smelt/sdl/CxImage/ximawmf.h | 154 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 154 insertions(+) create mode 100644 smelt/sdl/CxImage/ximawmf.h (limited to 'smelt/sdl/CxImage/ximawmf.h') diff --git a/smelt/sdl/CxImage/ximawmf.h b/smelt/sdl/CxImage/ximawmf.h new file mode 100644 index 0000000..94fb168 --- /dev/null +++ b/smelt/sdl/CxImage/ximawmf.h @@ -0,0 +1,154 @@ +/* +********************************************************************* + * File: ximawmf.h + * Purpose: Windows Metafile Class Loader and Writer + * Author: Volker Horch - vhorch@gmx.de + * created: 13-Jun-2002 +********************************************************************* + */ + +/* +********************************************************************* + Notes by Author: +********************************************************************* + + Limitations: + ============ + + a) Transparency: + + A Metafile is vector graphics, which has transparency by design. + This class always converts into a Bitmap format. Transparency is + supported, but there is no good way to find out, which parts + of the Metafile are transparent. There are two ways how we can + handle this: + + - Clear the Background of the Bitmap with the background color + you like (i have used COLOR_WINDOW) and don't support transparency. + + below #define XMF_SUPPORT_TRANSPARENCY 0 + #define XMF_COLOR_BACK RGB(Background color you like) + + - Clear the Background of the Bitmap with a very unusual color + (which one ?) and use this color as the transparent color + + below #define XMF_SUPPORT_TRANSPARENCY 1 + #define XMF_COLOR_TRANSPARENT_R ... + #define XMF_COLOR_TRANSPARENT_G ... + #define XMF_COLOR_TRANSPARENT_B ... + + b) Resolution + + Once we have converted the Metafile into a Bitmap and we zoom in + or out, the image may not look very good. If we still had the + original Metafile, zooming would produce good results always. + + c) Size + + Although the filesize of a Metafile may be very small, it might + produce a Bitmap with a bombastic size. Assume you have a Metafile + with an image size of 6000*4000, which contains just one Metafile + record ((e.g. a line from (0,0) to (6000, 4000)). The filesize + of this Metafile would be let's say 100kB. If we convert it to + a 6000*4000 Bitmap with 24 Bits/Pixes, the Bitmap would consume + about 68MB of memory. + + I have choosen, to limit the size of the Bitmap to max. + screensize, to avoid memory problems. + + If you want something else, + modify #define XMF_MAXSIZE_CX / XMF_MAXSIZE_CY below + +********************************************************************* +*/ + +#ifndef _XIMAWMF_H +#define _XIMAWMF_H + +#include "ximage.h" + +#if CXIMAGE_SUPPORT_WMF && CXIMAGE_SUPPORT_WINDOWS + +class CxImageWMF: public CxImage +{ + +#pragma pack(1) + +typedef struct tagRECT16 +{ + int16_t left; + int16_t top; + int16_t right; + int16_t bottom; +} RECT16; + +// taken from Windos 3.11 SDK Documentation (Programmer's Reference Volume 4: Resources) +typedef struct tagMETAFILEHEADER +{ + uint32_t key; // always 0x9ac6cdd7 + uint16_t reserved1; // reserved = 0 + RECT16 bbox; // bounding rectangle in metafile units as defined in "inch" + uint16_t inch; // number of metafile units per inch (should be < 1440) + uint32_t reserved2; // reserved = 0 + uint16_t checksum; // sum of the first 10 WORDS (using XOR operator) +} METAFILEHEADER; + +#pragma pack() + +public: + CxImageWMF(): CxImage(CXIMAGE_FORMAT_WMF) { } + + bool Decode(CxFile * hFile, int32_t nForceWidth=0, int32_t nForceHeight=0); + bool Decode(FILE *hFile, int32_t nForceWidth=0, int32_t nForceHeight=0) + { CxIOFile file(hFile); return Decode(&file,nForceWidth,nForceHeight); } + +#if CXIMAGE_SUPPORT_ENCODE + bool Encode(CxFile * hFile); + bool Encode(FILE *hFile) { CxIOFile file(hFile); return Encode(&file); } +#endif // CXIMAGE_SUPPORT_ENCODE + +protected: + void ShrinkMetafile(int32_t &cx, int32_t &cy); + BOOL CheckMetafileHeader(METAFILEHEADER *pmetafileheader); + HENHMETAFILE ConvertWmfFiletoEmf(CxFile *pFile, METAFILEHEADER *pmetafileheader); + HENHMETAFILE ConvertEmfFiletoEmf(CxFile *pFile, ENHMETAHEADER *pemfh); + +}; + +#define METAFILEKEY 0x9ac6cdd7L + +// Background color definition (if no transparency). see Notes above +#define XMF_COLOR_BACK GetSysColor(COLOR_WINDOW) +// alternatives +//#define XMF_COLOR_BACK RGB(192, 192, 192) // lite gray +//#define XMF_COLOR_BACK RGB( 0, 0, 0) // black +//#define XMF_COLOR_BACK RGB(255, 255, 255) // white + + +// transparency support. see Notes above +#define XMF_SUPPORT_TRANSPARENCY 0 +#define XMF_COLOR_TRANSPARENT_R 211 +#define XMF_COLOR_TRANSPARENT_G 121 +#define XMF_COLOR_TRANSPARENT_B 112 +// don't change +#define XMF_COLOR_TRANSPARENT RGB (XMF_COLOR_TRANSPARENT_R, \ + XMF_COLOR_TRANSPARENT_G, \ + XMF_COLOR_TRANSPARENT_B) +// don't change +#define XMF_RGBQUAD_TRANSPARENT XMF_COLOR_TRANSPARENT_B, \ + XMF_COLOR_TRANSPARENT_G, \ + XMF_COLOR_TRANSPARENT_R, \ + 0 +// max. size. see Notes above +// alternatives +//#define XMF_MAXSIZE_CX (GetSystemMetrics(SM_CXSCREEN)-10) +//#define XMF_MAXSIZE_CY (GetSystemMetrics(SM_CYSCREEN)-50) +//#define XMF_MAXSIZE_CX (2*GetSystemMetrics(SM_CXSCREEN)/3) +//#define XMF_MAXSIZE_CY (2*GetSystemMetrics(SM_CYSCREEN)/3) +#define XMF_MAXSIZE_CX 4000 +#define XMF_MAXSIZE_CY 4000 + + +#endif + +#endif -- cgit v1.2.3