From c91847d549cc1c30eb15504a15ea9a6d5aa48165 Mon Sep 17 00:00:00 2001 From: "chirs241097@gmail.com" Date: Sun, 12 Jan 2014 14:43:14 +0000 Subject: --- hge/CxImage/ximaico.cpp | 470 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 470 insertions(+) create mode 100644 hge/CxImage/ximaico.cpp (limited to 'hge/CxImage/ximaico.cpp') diff --git a/hge/CxImage/ximaico.cpp b/hge/CxImage/ximaico.cpp new file mode 100644 index 0000000..a808697 --- /dev/null +++ b/hge/CxImage/ximaico.cpp @@ -0,0 +1,470 @@ +/* + * File: ximaico.cpp + * Purpose: Platform Independent ICON Image Class Loader and Writer (MS version) + * 07/Aug/2001 Davide Pizzolato - www.xdp.it + * CxImage version 7.0.0 31/Dec/2010 + */ + +#include "ximaico.h" + +#if CXIMAGE_SUPPORT_ICO + +//////////////////////////////////////////////////////////////////////////////// +#if CXIMAGE_SUPPORT_DECODE +//////////////////////////////////////////////////////////////////////////////// +bool CxImageICO::Decode(CxFile *hFile) +{ + if (hFile==NULL) return false; + + uint32_t off = hFile->Tell(); // + int32_t page=info.nFrame; //internal icon structure indexes + + // read the first part of the header + ICONHEADER icon_header; + hFile->Read(&icon_header,sizeof(ICONHEADER),1); + + icon_header.idType = m_ntohs(icon_header.idType); + icon_header.idCount = m_ntohs(icon_header.idCount); + + // check if it's an icon or a cursor + if ((icon_header.idReserved == 0) && ((icon_header.idType == 1)||(icon_header.idType == 2))) { + + info.nNumFrames = icon_header.idCount; + + // load the icon descriptions + ICONDIRENTRY *icon_list = (ICONDIRENTRY *)malloc(icon_header.idCount * sizeof(ICONDIRENTRY)); + int32_t c; + for (c = 0; c < icon_header.idCount; c++) { + hFile->Read(icon_list + c, sizeof(ICONDIRENTRY), 1); + + icon_list[c].wPlanes = m_ntohs(icon_list[c].wPlanes); + icon_list[c].wBitCount = m_ntohs(icon_list[c].wBitCount); + icon_list[c].dwBytesInRes = m_ntohl(icon_list[c].dwBytesInRes); + icon_list[c].dwImageOffset = m_ntohl(icon_list[c].dwImageOffset); + } + + if ((page>=0)&&(pageSeek(off + icon_list[page].dwImageOffset, SEEK_SET); + CxImage png; + png.SetEscape(-1); + if (png.Decode(hFile,CXIMAGE_FORMAT_PNG)){ + Transfer(png); + info.nNumFrames = icon_header.idCount; + } + } +#endif //CXIMAGE_SUPPORT_PNG + free(icon_list); + info.dwType = CXIMAGE_FORMAT_ICO; + return true; + } + + // get the bit count for the colors in the icon + BITMAPINFOHEADER bih; + hFile->Seek(off + icon_list[page].dwImageOffset, SEEK_SET); + + if (icon_list[page].bWidth==0 && icon_list[page].bHeight==0) + { // Vista icon support +#if CXIMAGE_SUPPORT_PNG + CxImage png; + if (png.Decode(hFile,CXIMAGE_FORMAT_PNG)){ + Transfer(png); + info.nNumFrames = icon_header.idCount; + } + SetType(CXIMAGE_FORMAT_ICO); +#endif //CXIMAGE_SUPPORT_PNG + } + else + { // standard icon + hFile->Read(&bih,sizeof(BITMAPINFOHEADER),1); + + bihtoh(&bih); + + c = bih.biBitCount; + + // allocate memory for one icon + Create(icon_list[page].bWidth,icon_list[page].bHeight, c, CXIMAGE_FORMAT_ICO); //image creation + + // read the palette + RGBQUAD pal[256]; + if (bih.biClrUsed) + hFile->Read(pal,bih.biClrUsed*sizeof(RGBQUAD), 1); + else + hFile->Read(pal,head.biClrUsed*sizeof(RGBQUAD), 1); + + SetPalette(pal,head.biClrUsed); //palette assign + + //read the icon + if (c<=24){ + hFile->Read(info.pImage, head.biSizeImage, 1); + } else { // 32 bit icon + uint8_t* buf=(uint8_t*)malloc(4*head.biHeight*head.biWidth); + uint8_t* src = buf; + hFile->Read(buf, 4*head.biHeight*head.biWidth, 1); +#if CXIMAGE_SUPPORT_ALPHA + if (!AlphaIsValid()) AlphaCreate(); +#endif //CXIMAGE_SUPPORT_ALPHA + for (int32_t y = 0; y < head.biHeight; y++) { + uint8_t* dst = GetBits(y); + for(int32_t x=0;xRead(mask, masksize, 1)){ + + bool bGoodMask=false; + for (int32_t im=0;im>3)]>>(7-x%8))&0x01)){ + AlphaSet(x,y,0); + bNeedAlpha=true; + } + } + } + if (!bNeedAlpha) AlphaDelete(); +#endif //CXIMAGE_SUPPORT_ALPHA + + //check if there is only one transparent color + RGBQUAD cc,ct; + int32_t nTransColors=0; + int32_t nTransIndex=0; + for (y = 0; y < head.biHeight; y++){ + for (x = 0; x < head.biWidth; x++){ + if (((mask[y*maskwdt+(x>>3)] >> (7-x%8)) & 0x01)){ + cc = GetPixelColor(x,y,false); + if (nTransColors==0){ + nTransIndex = GetPixelIndex(x,y); + nTransColors++; + ct = cc; + } else { + if (memcmp(&cc, &ct, sizeof(RGBQUAD)) != 0){ + nTransColors++; + } + } + } + } + } + if (nTransColors==1 && c<=8){ + SetTransColor(ct); + SetTransIndex(nTransIndex); +#if CXIMAGE_SUPPORT_ALPHA + AlphaDelete(); //because we have a unique transparent color in the image +#endif //CXIMAGE_SUPPORT_ALPHA + } + + // - Transparency support w/o Alpha support + if (c <= 8){ // only for icons with less than 256 colors (XP icons need alpha). + + // find a color index, which is not used in the image + // it is almost sure to find one, bcs. nobody uses all possible colors for an icon + + uint8_t colorsUsed[256]; + memset(colorsUsed, 0, sizeof(colorsUsed)); + + for (y = 0; y < head.biHeight; y++){ + for (x = 0; x < head.biWidth; x++){ + colorsUsed[BlindGetPixelIndex(x,y)] = 1; + } + } + + int32_t iTransIdx = -1; + for (x = (int32_t)(head.biClrUsed-1); x>=0 ; x--){ + if (colorsUsed[x] == 0){ + iTransIdx = x; // this one is not in use. we may use it as transparent color + break; + } + } + + // Go thru image and set unused color as transparent index if needed + if (iTransIdx >= 0){ + bool bNeedTrans = false; + for (y = 0; y < head.biHeight; y++){ + for (x = 0; x < head.biWidth; x++){ + // AND mask (Each Byte represents 8 Pixels) + if (((mask[y*maskwdt+(x>>3)] >> (7-x%8)) & 0x01)){ + // AND mask is set (!=0). This is a transparent part + SetPixelIndex(x, y, (uint8_t)iTransIdx); + bNeedTrans = true; + } + } + } + // set transparent index if needed + if (bNeedTrans) SetTransIndex(iTransIdx); +#if CXIMAGE_SUPPORT_ALPHA + AlphaDelete(); //because we have a transparent color in the palette +#endif //CXIMAGE_SUPPORT_ALPHA + } + } + } else { + SetTransIndex(0); //empty mask, set black as transparent color + Negative(); + } + } + free(mask); + } + free(icon_list); + // icon has been loaded successfully! + return true; + } + free(icon_list); + } + return false; +} +//////////////////////////////////////////////////////////////////////////////// +#endif //CXIMAGE_SUPPORT_DECODE +//////////////////////////////////////////////////////////////////////////////// +#if CXIMAGE_SUPPORT_ENCODE +//////////////////////////////////////////////////////////////////////////////// +// Thanks to +bool CxImageICO::Encode(CxFile * hFile, CxImage ** pImages, int32_t nPageCount) +{ + cx_try + { + if (hFile==NULL) cx_throw("invalid file pointer"); + if (pImages==NULL || nPageCount<=0) cx_throw("multipage ICO, no images!"); + + int32_t i; + for (i=0; iIsValid())) + cx_throw("Empty image"); + } + + CxImageICO ghost; + for (i=0; i255)||(head.biHeight>255)){ + strcpy(info.szLastError,"Can't save this image as icon"); + return false; + } +#endif + + //prepare the palette struct + RGBQUAD* pal=GetPalette(); + if (head.biBitCount<=8 && pal==NULL) return false; + + int32_t maskwdt=((head.biWidth+31)/32)*4; //mask line width + int32_t masksize=head.biHeight * maskwdt; //size of mask + int32_t bitcount=head.biBitCount; + int32_t imagesize=head.biSizeImage; +#if CXIMAGE_SUPPORT_ALPHA + if (AlphaIsValid() && head.biClrUsed==0){ + bitcount=32; + imagesize=4*head.biHeight*head.biWidth; + } +#endif + + //fill the icon headers + int32_t nPages = nPageCount; + if (nPages<1) nPages = 1; + + ICONHEADER icon_header={0,1,nPages}; + + if (!bAppend) + m_dwImageOffset = sizeof(ICONHEADER) + nPages * sizeof(ICONDIRENTRY); + + uint32_t dwBytesInRes = sizeof(BITMAPINFOHEADER)+head.biClrUsed*sizeof(RGBQUAD)+imagesize+masksize; + + ICONDIRENTRY icon_list={ + (uint8_t)head.biWidth, + (uint8_t)head.biHeight, + (uint8_t)head.biClrUsed, + 0, 0, + (uint16_t)bitcount, + dwBytesInRes, + m_dwImageOffset + }; + + BITMAPINFOHEADER bi={ + sizeof(BITMAPINFOHEADER), + head.biWidth, + 2*head.biHeight, + 1, + (uint16_t)bitcount, + 0, imagesize, + 0, 0, 0, 0 + }; + +#if CXIMAGE_SUPPORT_PNG // Vista icon support + CxImage png(*this); + CxMemFile memfile; + if (head.biWidth>255 || head.biHeight>255){ + icon_list.bWidth = icon_list.bHeight = 0; + memfile.Open(); + png.Encode(&memfile,CXIMAGE_FORMAT_PNG); + icon_list.dwBytesInRes = dwBytesInRes = memfile.Size(); + } +#endif //CXIMAGE_SUPPORT_PNG + + if (!bAppend){ + icon_header.idType = m_ntohs(icon_header.idType); + icon_header.idCount = m_ntohs(icon_header.idCount); + hFile->Write(&icon_header,sizeof(ICONHEADER),1); //write the file header + icon_header.idType = m_ntohs(icon_header.idType); + icon_header.idCount = m_ntohs(icon_header.idCount); + } + + + if ((bAppend && nPageCount==info.nNumFrames) || (!bAppend && nPageCount==0)){ + icon_list.wPlanes = m_ntohs(icon_list.wPlanes); + icon_list.wBitCount = m_ntohs(icon_list.wBitCount); + icon_list.dwBytesInRes = m_ntohl(icon_list.dwBytesInRes); + icon_list.dwImageOffset = m_ntohl(icon_list.dwImageOffset); + hFile->Write(&icon_list,sizeof(ICONDIRENTRY),1); //write the image entry + icon_list.wPlanes = m_ntohs(icon_list.wPlanes); + icon_list.wBitCount = m_ntohs(icon_list.wBitCount); + icon_list.dwBytesInRes = m_ntohl(icon_list.dwBytesInRes); + icon_list.dwImageOffset = m_ntohl(icon_list.dwImageOffset); + + m_dwImageOffset += dwBytesInRes; //update offset for next header + } + + if ((bAppend && nPageCountWrite(memfile.GetBuffer(false),dwBytesInRes,1); + } else +#endif //CXIMAGE_SUPPORT_PNG + { // standard icon + bihtoh(&bi); + hFile->Write(&bi,sizeof(BITMAPINFOHEADER),1); //write the image header + bihtoh(&bi); + + bool bTransparent = info.nBkgndIndex >= 0; + RGBQUAD ct = GetTransColor(); + if (pal){ + if (bTransparent) SetPaletteColor((uint8_t)info.nBkgndIndex,0,0,0,0); + hFile->Write(pal,head.biClrUsed*sizeof(RGBQUAD),1); //write palette + if (bTransparent) SetPaletteColor((uint8_t)info.nBkgndIndex,ct); + } + +#if CXIMAGE_SUPPORT_ALPHA + if (AlphaIsValid() && head.biClrUsed==0){ + uint8_t* buf=(uint8_t*)malloc(imagesize); + uint8_t* dst = buf; + for (int32_t y = 0; y < head.biHeight; y++) { + uint8_t* src = GetBits(y); + for(int32_t x=0;xWrite(buf,imagesize, 1); + free(buf); + } else { + hFile->Write(info.pImage,imagesize,1); //write image + } +#else + hFile->Write(info.pImage,imagesize,1); //write image +#endif + + //save transparency mask + uint8_t* mask=(uint8_t*)calloc(masksize,1); //create empty AND/XOR masks + if (!mask) return false; + + //prepare the variables to build the mask + uint8_t* iDst; + int32_t pos,i; + RGBQUAD c={0,0,0,0}; + int32_t* pc = (int32_t*)&c; + int32_t* pct= (int32_t*)&ct; +#if CXIMAGE_SUPPORT_ALPHA + bool bAlphaPaletteIsValid = AlphaPaletteIsValid(); + bool bAlphaIsValid = AlphaIsValid(); +#endif + //build the mask + for (int32_t y = 0; y < head.biHeight; y++) { + for (int32_t x = 0; x < head.biWidth; x++) { + i=0; +#if CXIMAGE_SUPPORT_ALPHA + if (bAlphaIsValid && AlphaGet(x,y)==0) i=1; + if (bAlphaPaletteIsValid && BlindGetPixelColor(x,y).rgbReserved==0) i=1; +#endif + c=GetPixelColor(x,y,false); + if (bTransparent && *pc==*pct) i=1; + iDst = mask + y*maskwdt + (x>>3); + pos = 7-x%8; + *iDst &= ~(0x01<Write(mask,masksize,1); + free(mask); + } + } + + return true; +} +//////////////////////////////////////////////////////////////////////////////// +#endif // CXIMAGE_SUPPORT_ENCODE +//////////////////////////////////////////////////////////////////////////////// +#endif // CXIMAGE_SUPPORT_ICO + -- cgit v1.2.3