diff options
Diffstat (limited to 'archive/hge/CxImage/ximaico.cpp')
| -rw-r--r-- | archive/hge/CxImage/ximaico.cpp | 470 |
1 files changed, 470 insertions, 0 deletions
diff --git a/archive/hge/CxImage/ximaico.cpp b/archive/hge/CxImage/ximaico.cpp new file mode 100644 index 0000000..a808697 --- /dev/null +++ b/archive/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(); //<yuandi>
+ 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)&&(page<icon_header.idCount)){
+
+ if (info.nEscape == -1) {
+ // Return output dimensions only
+ head.biWidth = icon_list[page].bWidth;
+ head.biHeight = icon_list[page].bHeight;
+#if CXIMAGE_SUPPORT_PNG
+ if (head.biWidth==0 && head.biHeight==0)
+ { // Vista icon support
+ hFile->Seek(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 <CoreyRLucier>
+ 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;x<head.biWidth;x++){
+ *dst++=src[0];
+ *dst++=src[1];
+ *dst++=src[2];
+#if CXIMAGE_SUPPORT_ALPHA
+ AlphaSet(x,y,src[3]);
+#endif //CXIMAGE_SUPPORT_ALPHA
+ src+=4;
+ }
+ }
+ free(buf);
+ }
+ // apply the AND and XOR masks
+ int32_t maskwdt = ((head.biWidth+31) / 32) * 4; //line width of AND mask (always 1 Bpp)
+ int32_t masksize = head.biHeight * maskwdt; //size of mask
+ uint8_t *mask = (uint8_t *)malloc(masksize);
+ if (hFile->Read(mask, masksize, 1)){
+
+ bool bGoodMask=false;
+ for (int32_t im=0;im<masksize;im++){
+ if (mask[im]!=255){
+ bGoodMask=true;
+ break;
+ }
+ }
+
+ if (bGoodMask){
+#if CXIMAGE_SUPPORT_ALPHA
+ bool bNeedAlpha = false;
+ if (!AlphaIsValid()){
+ AlphaCreate();
+ } else {
+ bNeedAlpha=true; //32bit icon
+ }
+ int32_t x,y;
+ for (y = 0; y < head.biHeight; y++) {
+ for (x = 0; x < head.biWidth; x++) {
+ if (((mask[y*maskwdt+(x>>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
+ }
+
+ // <vho> - 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 <Alas>
+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; i<nPageCount; i++){
+ if (pImages[i]==NULL)
+ cx_throw("Bad image pointer");
+ if (!(pImages[i]->IsValid()))
+ cx_throw("Empty image");
+ }
+
+ CxImageICO ghost;
+ for (i=0; i<nPageCount; i++){ //write headers
+ ghost.Ghost(pImages[i]);
+ ghost.info.nNumFrames = nPageCount;
+ if (i==0) {
+ if (!ghost.Encode(hFile,false,nPageCount))
+ cx_throw("Error writing ICO file header");
+ }
+ if (!ghost.Encode(hFile,true,nPageCount))
+ cx_throw("Error saving ICO image header");
+ }
+ for (i=0; i<nPageCount; i++){ //write bodies
+ ghost.Ghost(pImages[i]);
+ ghost.info.nNumFrames = nPageCount;
+ if (!ghost.Encode(hFile,true,i))
+ cx_throw("Error saving ICO body");
+ }
+
+ } cx_catch {
+ if (strcmp(message,"")) strncpy(info.szLastError,message,255);
+ return false;
+ }
+ return true;
+}
+////////////////////////////////////////////////////////////////////////////////
+bool CxImageICO::Encode(CxFile * hFile, bool bAppend, int32_t nPageCount)
+{
+ if (EncodeSafeCheck(hFile)) return false;
+
+#if CXIMAGE_SUPPORT_PNG == 0
+ //check format limits
+ if ((head.biWidth>255)||(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 && nPageCount<info.nNumFrames) || (!bAppend && nPageCount==0))
+ {
+#if CXIMAGE_SUPPORT_PNG
+ if (icon_list.bWidth==0 && icon_list.bHeight==0) { // Vista icon support
+ hFile->Write(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;x<head.biWidth;x++){
+ *dst++=*src++;
+ *dst++=*src++;
+ *dst++=*src++;
+ *dst++=AlphaGet(x,y);
+ }
+ }
+ hFile->Write(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<<pos);
+ *iDst |= ((i & 0x01)<<pos);
+ }
+ }
+ //write AND/XOR masks
+ hFile->Write(mask,masksize,1);
+ free(mask);
+ }
+ }
+
+ return true;
+}
+////////////////////////////////////////////////////////////////////////////////
+#endif // CXIMAGE_SUPPORT_ENCODE
+////////////////////////////////////////////////////////////////////////////////
+#endif // CXIMAGE_SUPPORT_ICO
+
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