diff options
Diffstat (limited to 'smelt/sdl/CxImage/ximapal.cpp')
| -rw-r--r-- | smelt/sdl/CxImage/ximapal.cpp | 834 |
1 files changed, 0 insertions, 834 deletions
diff --git a/smelt/sdl/CxImage/ximapal.cpp b/smelt/sdl/CxImage/ximapal.cpp deleted file mode 100644 index fe0615b..0000000 --- a/smelt/sdl/CxImage/ximapal.cpp +++ /dev/null @@ -1,834 +0,0 @@ -// xImaPal.cpp : Palette and Pixel functions
-/* 07/08/2001 v1.00 - Davide Pizzolato - www.xdp.it
- * CxImage version 7.0.0 31/Dec/2010
- */
-
-#include "ximage.h"
-
-////////////////////////////////////////////////////////////////////////////////
-/**
- * returns the palette dimension in byte
- */
-uint32_t CxImage::GetPaletteSize()
-{
- return (head.biClrUsed * sizeof(RGBQUAD));
-}
-////////////////////////////////////////////////////////////////////////////////
-void CxImage::SetPaletteColor(uint8_t idx, uint8_t r, uint8_t g, uint8_t b, uint8_t alpha)
-{
- if ((pDib)&&(head.biClrUsed)){
- uint8_t* iDst = (uint8_t*)(pDib) + sizeof(BITMAPINFOHEADER);
- if (idx<head.biClrUsed){
- int32_t ldx=idx*sizeof(RGBQUAD);
- iDst[ldx++] = (uint8_t) b;
- iDst[ldx++] = (uint8_t) g;
- iDst[ldx++] = (uint8_t) r;
- iDst[ldx] = (uint8_t) alpha;
- info.last_c_isvalid = false;
- }
- }
-}
-////////////////////////////////////////////////////////////////////////////////
-void CxImage::SetPaletteColor(uint8_t idx, RGBQUAD c)
-{
- if ((pDib)&&(head.biClrUsed)){
- uint8_t* iDst = (uint8_t*)(pDib) + sizeof(BITMAPINFOHEADER);
- if (idx<head.biClrUsed){
- int32_t ldx=idx*sizeof(RGBQUAD);
- iDst[ldx++] = (uint8_t) c.rgbBlue;
- iDst[ldx++] = (uint8_t) c.rgbGreen;
- iDst[ldx++] = (uint8_t) c.rgbRed;
- iDst[ldx] = (uint8_t) c.rgbReserved;
- info.last_c_isvalid = false;
- }
- }
-}
-////////////////////////////////////////////////////////////////////////////////
-void CxImage::SetPaletteColor(uint8_t idx, COLORREF cr)
-{
- if ((pDib)&&(head.biClrUsed)){
- uint8_t* iDst = (uint8_t*)(pDib) + sizeof(BITMAPINFOHEADER);
- if (idx<head.biClrUsed){
- int32_t ldx=idx*sizeof(RGBQUAD);
- iDst[ldx++] = (uint8_t) GetBValue(cr);
- iDst[ldx++] = (uint8_t) GetGValue(cr);
- iDst[ldx++] = (uint8_t) GetRValue(cr);
- iDst[ldx] = (uint8_t) 0;
- info.last_c_isvalid = false;
- }
- }
-}
-////////////////////////////////////////////////////////////////////////////////
-/**
- * returns the pointer to the first palette index
- */
-RGBQUAD* CxImage::GetPalette() const
-{
- if ((pDib)&&(head.biClrUsed))
- return (RGBQUAD*)((uint8_t*)pDib + sizeof(BITMAPINFOHEADER));
- return NULL;
-}
-////////////////////////////////////////////////////////////////////////////////
-/**
- * Returns the color of the specified index.
- */
-RGBQUAD CxImage::GetPaletteColor(uint8_t idx)
-{
- RGBQUAD rgb = {0,0,0,0};
- if ((pDib)&&(head.biClrUsed)){
- uint8_t* iDst = (uint8_t*)(pDib) + sizeof(BITMAPINFOHEADER);
- if (idx<head.biClrUsed){
- int32_t ldx=idx*sizeof(RGBQUAD);
- rgb.rgbBlue = iDst[ldx++];
- rgb.rgbGreen=iDst[ldx++];
- rgb.rgbRed =iDst[ldx++];
- rgb.rgbReserved = iDst[ldx];
- }
- }
- return rgb;
-}
-////////////////////////////////////////////////////////////////////////////////
-/**
- * Returns the palette index of the specified pixel.
- */
-uint8_t CxImage::GetPixelIndex(int32_t x,int32_t y)
-{
- if ((pDib==NULL)||(head.biClrUsed==0)) return 0;
-
- if ((x<0)||(y<0)||(x>=head.biWidth)||(y>=head.biHeight)) {
- if (info.nBkgndIndex >= 0) return (uint8_t)info.nBkgndIndex;
- else return *info.pImage;
- }
- if (head.biBitCount==8){
- return info.pImage[y*info.dwEffWidth + x];
- } else {
- uint8_t pos;
- uint8_t iDst= info.pImage[y*info.dwEffWidth + (x*head.biBitCount >> 3)];
- if (head.biBitCount==4){
- pos = (uint8_t)(4*(1-x%2));
- iDst &= (0x0F<<pos);
- return (uint8_t)(iDst >> pos);
- } else if (head.biBitCount==1){
- pos = (uint8_t)(7-x%8);
- iDst &= (0x01<<pos);
- return (uint8_t)(iDst >> pos);
- }
- }
- return 0;
-}
-////////////////////////////////////////////////////////////////////////////////
-uint8_t CxImage::BlindGetPixelIndex(const int32_t x,const int32_t y)
-{
-#ifdef _DEBUG
- if ((pDib==NULL) || (head.biClrUsed==0) || !IsInside(x,y))
- #if CXIMAGE_SUPPORT_EXCEPTION_HANDLING
- throw 0;
- #else
- return 0;
- #endif
-#endif
-
- if (head.biBitCount==8){
- return info.pImage[y*info.dwEffWidth + x];
- } else {
- uint8_t pos;
- uint8_t iDst= info.pImage[y*info.dwEffWidth + (x*head.biBitCount >> 3)];
- if (head.biBitCount==4){
- pos = (uint8_t)(4*(1-x%2));
- iDst &= (0x0F<<pos);
- return (uint8_t)(iDst >> pos);
- } else if (head.biBitCount==1){
- pos = (uint8_t)(7-x%8);
- iDst &= (0x01<<pos);
- return (uint8_t)(iDst >> pos);
- }
- }
- return 0;
-}
-////////////////////////////////////////////////////////////////////////////////
-RGBQUAD CxImage::GetPixelColor(int32_t x,int32_t y, bool bGetAlpha)
-{
-// RGBQUAD rgb={0,0,0,0};
- RGBQUAD rgb=info.nBkgndColor; //<mpwolski>
- if ((pDib==NULL)||(x<0)||(y<0)||
- (x>=head.biWidth)||(y>=head.biHeight)){
- if (info.nBkgndIndex >= 0){
- if (head.biBitCount<24) return GetPaletteColor((uint8_t)info.nBkgndIndex);
- else return info.nBkgndColor;
- } else if (pDib) return GetPixelColor(0,0);
- return rgb;
- }
-
- if (head.biClrUsed){
- rgb = GetPaletteColor(BlindGetPixelIndex(x,y));
- } else {
- uint8_t* iDst = info.pImage + y*info.dwEffWidth + x*3;
- rgb.rgbBlue = *iDst++;
- rgb.rgbGreen= *iDst++;
- rgb.rgbRed = *iDst;
- }
-#if CXIMAGE_SUPPORT_ALPHA
- if (pAlpha && bGetAlpha) rgb.rgbReserved = BlindAlphaGet(x,y);
-#else
- rgb.rgbReserved = 0;
-#endif //CXIMAGE_SUPPORT_ALPHA
- return rgb;
-}
-////////////////////////////////////////////////////////////////////////////////
-/**
- * This is (a bit) faster version of GetPixelColor.
- * It tests bounds only in debug mode (_DEBUG defined).
- *
- * It is an error to request out-of-borders pixel with this method.
- * In DEBUG mode an exception will be thrown, and data will be violated in non-DEBUG mode.
- * \author ***bd*** 2.2004
- */
-RGBQUAD CxImage::BlindGetPixelColor(const int32_t x,const int32_t y, bool bGetAlpha)
-{
- RGBQUAD rgb;
-#ifdef _DEBUG
- if ((pDib==NULL) || !IsInside(x,y))
- #if CXIMAGE_SUPPORT_EXCEPTION_HANDLING
- throw 0;
- #else
- {rgb.rgbReserved = 0; return rgb;}
- #endif
-#endif
-
- if (head.biClrUsed){
- rgb = GetPaletteColor(BlindGetPixelIndex(x,y));
- } else {
- uint8_t* iDst = info.pImage + y*info.dwEffWidth + x*3;
- rgb.rgbBlue = *iDst++;
- rgb.rgbGreen= *iDst++;
- rgb.rgbRed = *iDst;
- rgb.rgbReserved = 0; //needed for images without alpha layer
- }
-#if CXIMAGE_SUPPORT_ALPHA
- if (pAlpha && bGetAlpha) rgb.rgbReserved = BlindAlphaGet(x,y);
-#else
- rgb.rgbReserved = 0;
-#endif //CXIMAGE_SUPPORT_ALPHA
- return rgb;
-}
-////////////////////////////////////////////////////////////////////////////////
-uint8_t CxImage::GetPixelGray(int32_t x, int32_t y)
-{
- RGBQUAD color = GetPixelColor(x,y);
- return (uint8_t)RGB2GRAY(color.rgbRed,color.rgbGreen,color.rgbBlue);
-}
-////////////////////////////////////////////////////////////////////////////////
-void CxImage::BlindSetPixelIndex(int32_t x,int32_t y,uint8_t i)
-{
-#ifdef _DEBUG
- if ((pDib==NULL)||(head.biClrUsed==0)||
- (x<0)||(y<0)||(x>=head.biWidth)||(y>=head.biHeight))
- #if CXIMAGE_SUPPORT_EXCEPTION_HANDLING
- throw 0;
- #else
- return;
- #endif
-#endif
-
- if (head.biBitCount==8){
- info.pImage[y*info.dwEffWidth + x]=i;
- return;
- } else {
- uint8_t pos;
- uint8_t* iDst= info.pImage + y*info.dwEffWidth + (x*head.biBitCount >> 3);
- if (head.biBitCount==4){
- pos = (uint8_t)(4*(1-x%2));
- *iDst &= ~(0x0F<<pos);
- *iDst |= ((i & 0x0F)<<pos);
- return;
- } else if (head.biBitCount==1){
- pos = (uint8_t)(7-x%8);
- *iDst &= ~(0x01<<pos);
- *iDst |= ((i & 0x01)<<pos);
- return;
- }
- }
-}
-////////////////////////////////////////////////////////////////////////////////
-void CxImage::SetPixelIndex(int32_t x,int32_t y,uint8_t i)
-{
- if ((pDib==NULL)||(head.biClrUsed==0)||
- (x<0)||(y<0)||(x>=head.biWidth)||(y>=head.biHeight)) return ;
-
- if (head.biBitCount==8){
- info.pImage[y*info.dwEffWidth + x]=i;
- return;
- } else {
- uint8_t pos;
- uint8_t* iDst= info.pImage + y*info.dwEffWidth + (x*head.biBitCount >> 3);
- if (head.biBitCount==4){
- pos = (uint8_t)(4*(1-x%2));
- *iDst &= ~(0x0F<<pos);
- *iDst |= ((i & 0x0F)<<pos);
- return;
- } else if (head.biBitCount==1){
- pos = (uint8_t)(7-x%8);
- *iDst &= ~(0x01<<pos);
- *iDst |= ((i & 0x01)<<pos);
- return;
- }
- }
-}
-////////////////////////////////////////////////////////////////////////////////
-void CxImage::SetPixelColor(int32_t x,int32_t y,COLORREF cr)
-{
- SetPixelColor(x,y,RGBtoRGBQUAD(cr));
-}
-////////////////////////////////////////////////////////////////////////////////
-void CxImage::BlindSetPixelColor(int32_t x,int32_t y,RGBQUAD c, bool bSetAlpha)
-{
-#ifdef _DEBUG
- if ((pDib==NULL)||(x<0)||(y<0)||
- (x>=head.biWidth)||(y>=head.biHeight))
- #if CXIMAGE_SUPPORT_EXCEPTION_HANDLING
- throw 0;
- #else
- return;
- #endif
-#endif
- if (head.biClrUsed)
- BlindSetPixelIndex(x,y,GetNearestIndex(c));
- else {
- uint8_t* iDst = info.pImage + y*info.dwEffWidth + x*3;
- *iDst++ = c.rgbBlue;
- *iDst++ = c.rgbGreen;
- *iDst = c.rgbRed;
- }
-#if CXIMAGE_SUPPORT_ALPHA
- if (bSetAlpha) AlphaSet(x,y,c.rgbReserved);
-#endif //CXIMAGE_SUPPORT_ALPHA
-}
-////////////////////////////////////////////////////////////////////////////////
-void CxImage::SetPixelColor(int32_t x,int32_t y,RGBQUAD c, bool bSetAlpha)
-{
- if ((pDib==NULL)||(x<0)||(y<0)||
- (x>=head.biWidth)||(y>=head.biHeight)) return;
- if (head.biClrUsed)
- BlindSetPixelIndex(x,y,GetNearestIndex(c));
- else {
- uint8_t* iDst = info.pImage + y*info.dwEffWidth + x*3;
- *iDst++ = c.rgbBlue;
- *iDst++ = c.rgbGreen;
- *iDst = c.rgbRed;
- }
-#if CXIMAGE_SUPPORT_ALPHA
- if (bSetAlpha) AlphaSet(x,y,c.rgbReserved);
-#endif //CXIMAGE_SUPPORT_ALPHA
-}
-////////////////////////////////////////////////////////////////////////////////
-/**
- * Blends the current pixel color with a new color.
- * \param x,y = pixel
- * \param c = new color
- * \param blend = can be from 0 (no effect) to 1 (full effect).
- * \param bSetAlpha = if true, blends also the alpha component stored in c.rgbReserved
- */
-void CxImage::BlendPixelColor(int32_t x,int32_t y,RGBQUAD c, float blend, bool bSetAlpha)
-{
- if ((pDib==NULL)||(x<0)||(y<0)||
- (x>=head.biWidth)||(y>=head.biHeight)) return;
-
- int32_t a0 = (int32_t)(256*blend);
- int32_t a1 = 256 - a0;
-
- RGBQUAD c0 = BlindGetPixelColor(x,y);
- c.rgbRed = (uint8_t)((c.rgbRed * a0 + c0.rgbRed * a1)>>8);
- c.rgbBlue = (uint8_t)((c.rgbBlue * a0 + c0.rgbBlue * a1)>>8);
- c.rgbGreen = (uint8_t)((c.rgbGreen * a0 + c0.rgbGreen * a1)>>8);
-
- if (head.biClrUsed)
- BlindSetPixelIndex(x,y,GetNearestIndex(c));
- else {
- uint8_t* iDst = info.pImage + y*info.dwEffWidth + x*3;
- *iDst++ = c.rgbBlue;
- *iDst++ = c.rgbGreen;
- *iDst = c.rgbRed;
-#if CXIMAGE_SUPPORT_ALPHA
- if (bSetAlpha) AlphaSet(x,y,c.rgbReserved);
-#endif //CXIMAGE_SUPPORT_ALPHA
- }
-}
-////////////////////////////////////////////////////////////////////////////////
-/**
- * Returns the best palette index that matches a specified color.
- */
-uint8_t CxImage::GetNearestIndex(RGBQUAD c)
-{
- if ((pDib==NULL)||(head.biClrUsed==0)) return 0;
-
- // <RJ> check matching with the previous result
- if (info.last_c_isvalid && (*(int32_t*)&info.last_c == *(int32_t*)&c)) return info.last_c_index;
- info.last_c = c;
- info.last_c_isvalid = true;
-
- uint8_t* iDst = (uint8_t*)(pDib) + sizeof(BITMAPINFOHEADER);
- int32_t distance=200000;
- int32_t i,j = 0;
- int32_t k,l;
- int32_t m = (int32_t)(head.biClrImportant==0 ? head.biClrUsed : head.biClrImportant);
- for(i=0,l=0;i<m;i++,l+=sizeof(RGBQUAD)){
- k = (iDst[l]-c.rgbBlue)*(iDst[l]-c.rgbBlue)+
- (iDst[l+1]-c.rgbGreen)*(iDst[l+1]-c.rgbGreen)+
- (iDst[l+2]-c.rgbRed)*(iDst[l+2]-c.rgbRed);
-// k = abs(iDst[l]-c.rgbBlue)+abs(iDst[l+1]-c.rgbGreen)+abs(iDst[l+2]-c.rgbRed);
- if (k==0){
- j=i;
- break;
- }
- if (k<distance){
- distance=k;
- j=i;
- }
- }
- info.last_c_index = (uint8_t)j;
- return (uint8_t)j;
-}
-////////////////////////////////////////////////////////////////////////////////
-/**
- * swaps the blue and red components (for RGB images)
- * \param buffer : pointer to the pixels
- * \param length : number of bytes to swap. lenght may not exceed the scan line.
- */
-void CxImage::RGBtoBGR(uint8_t *buffer, int32_t length)
-{
- if (buffer && (head.biClrUsed==0)){
- uint8_t temp;
- length = min(length,(int32_t)info.dwEffWidth);
- length = min(length,(int32_t)(3*head.biWidth));
- for (int32_t i=0;i<length;i+=3){
- temp = buffer[i]; buffer[i] = buffer[i+2]; buffer[i+2] = temp;
- }
- }
-}
-////////////////////////////////////////////////////////////////////////////////
-RGBQUAD CxImage::RGBtoRGBQUAD(COLORREF cr)
-{
- RGBQUAD c;
- c.rgbRed = GetRValue(cr); /* get R, G, and B out of uint32_t */
- c.rgbGreen = GetGValue(cr);
- c.rgbBlue = GetBValue(cr);
- c.rgbReserved=0;
- return c;
-}
-////////////////////////////////////////////////////////////////////////////////
-COLORREF CxImage::RGBQUADtoRGB (RGBQUAD c)
-{
- return RGB(c.rgbRed,c.rgbGreen,c.rgbBlue);
-}
-////////////////////////////////////////////////////////////////////////////////
-/**
- * Returns the color of the specified index.
- * \param i = palette index
- * \param r, g, b = output color channels
- */
-bool CxImage::GetPaletteColor(uint8_t i, uint8_t* r, uint8_t* g, uint8_t* b)
-{
- RGBQUAD* ppal=GetPalette();
- if (ppal) {
- *r = ppal[i].rgbRed;
- *g = ppal[i].rgbGreen;
- *b = ppal[i].rgbBlue;
- return true;
- }
- return false;
-}
-////////////////////////////////////////////////////////////////////////////////
-void CxImage::SetPalette(uint32_t n, uint8_t *r, uint8_t *g, uint8_t *b)
-{
- if ((!r)||(pDib==NULL)||(head.biClrUsed==0)) return;
- if (!g) g = r;
- if (!b) b = g;
- RGBQUAD* ppal=GetPalette();
- uint32_t m=min(n,head.biClrUsed);
- for (uint32_t i=0; i<m;i++){
- ppal[i].rgbRed=r[i];
- ppal[i].rgbGreen=g[i];
- ppal[i].rgbBlue=b[i];
- }
- info.last_c_isvalid = false;
-}
-////////////////////////////////////////////////////////////////////////////////
-void CxImage::SetPalette(rgb_color *rgb,uint32_t nColors)
-{
- if ((!rgb)||(pDib==NULL)||(head.biClrUsed==0)) return;
- RGBQUAD* ppal=GetPalette();
- uint32_t m=min(nColors,head.biClrUsed);
- for (uint32_t i=0; i<m;i++){
- ppal[i].rgbRed=rgb[i].r;
- ppal[i].rgbGreen=rgb[i].g;
- ppal[i].rgbBlue=rgb[i].b;
- }
- info.last_c_isvalid = false;
-}
-////////////////////////////////////////////////////////////////////////////////
-void CxImage::SetPalette(RGBQUAD* pPal,uint32_t nColors)
-{
- if ((pPal==NULL)||(pDib==NULL)||(head.biClrUsed==0)) return;
- memcpy(GetPalette(),pPal,min(GetPaletteSize(),nColors*sizeof(RGBQUAD)));
- info.last_c_isvalid = false;
-}
-////////////////////////////////////////////////////////////////////////////////
-/**
- * Sets (or replaces) the palette to gray scale palette.
- * The function doesn't change the pixels; for standard
- * gray scale conversion use GrayScale().
- */
-void CxImage::SetGrayPalette()
-{
- if ((pDib==NULL)||(head.biClrUsed==0)) return;
- RGBQUAD* pal=GetPalette();
- for (uint32_t ni=0;ni<head.biClrUsed;ni++)
- pal[ni].rgbBlue=pal[ni].rgbGreen = pal[ni].rgbRed = (uint8_t)(ni*(255/(head.biClrUsed-1)));
-}
-////////////////////////////////////////////////////////////////////////////////
-/**
- * Colorize the palette.
- * \sa Colorize
- */
-void CxImage::BlendPalette(COLORREF cr,int32_t perc)
-{
- if ((pDib==NULL)||(head.biClrUsed==0)) return;
- uint8_t* iDst = (uint8_t*)(pDib) + sizeof(BITMAPINFOHEADER);
- uint32_t i,r,g,b;
- RGBQUAD* pPal=(RGBQUAD*)iDst;
- r = GetRValue(cr);
- g = GetGValue(cr);
- b = GetBValue(cr);
- if (perc>100) perc=100;
- for(i=0;i<head.biClrUsed;i++){
- pPal[i].rgbBlue=(uint8_t)((pPal[i].rgbBlue*(100-perc)+b*perc)/100);
- pPal[i].rgbGreen =(uint8_t)((pPal[i].rgbGreen*(100-perc)+g*perc)/100);
- pPal[i].rgbRed =(uint8_t)((pPal[i].rgbRed*(100-perc)+r*perc)/100);
- }
-}
-////////////////////////////////////////////////////////////////////////////////
-/**
- * Returns true if the image has 256 colors and a linear grey scale palette.
- */
-bool CxImage::IsGrayScale()
-{
- RGBQUAD* ppal=GetPalette();
- if(!(pDib && ppal && head.biClrUsed)) return false;
- for(uint32_t i=0;i<head.biClrUsed;i++){
- if (ppal[i].rgbBlue!=i || ppal[i].rgbGreen!=i || ppal[i].rgbRed!=i) return false;
- }
- return true;
-}
-////////////////////////////////////////////////////////////////////////////////
-/**
- * swap two indexes in the image and their colors in the palette
- */
-void CxImage::SwapIndex(uint8_t idx1, uint8_t idx2)
-{
- RGBQUAD* ppal=GetPalette();
- if(!(pDib && ppal)) return;
- //swap the colors
- RGBQUAD tempRGB=GetPaletteColor(idx1);
- SetPaletteColor(idx1,GetPaletteColor(idx2));
- SetPaletteColor(idx2,tempRGB);
- //swap the pixels
- uint8_t idx;
- for(int32_t y=0; y < head.biHeight; y++){
- for(int32_t x=0; x < head.biWidth; x++){
- idx=BlindGetPixelIndex(x,y);
- if (idx==idx1) BlindSetPixelIndex(x,y,idx2);
- if (idx==idx2) BlindSetPixelIndex(x,y,idx1);
- }
- }
-}
-////////////////////////////////////////////////////////////////////////////////
-/**
- * swap Red and Blue colors
- */
-void CxImage::SwapRGB2BGR()
-{
- if (!pDib) return;
-
- if (head.biClrUsed){
- RGBQUAD* ppal=GetPalette();
- uint8_t b;
- if(!ppal) return;
- for(uint16_t a=0;a<head.biClrUsed;a++){
- b=ppal[a].rgbBlue; ppal[a].rgbBlue=ppal[a].rgbRed; ppal[a].rgbRed=b;
- }
- } else {
- for(int32_t y=0;y<head.biHeight;y++){
- RGBtoBGR(GetBits(y),3*head.biWidth);
- }
- }
-}
-////////////////////////////////////////////////////////////////////////////////
-bool CxImage::IsTransparent(int32_t x, int32_t y)
-{
- if (!pDib) return false;
-
- if (info.nBkgndIndex>=0){
- if (head.biClrUsed){
- if (GetPixelIndex(x,y) == info.nBkgndIndex) return true;
- } else {
- RGBQUAD ct = info.nBkgndColor;
- RGBQUAD c = GetPixelColor(x,y,false);
- if (*(int32_t*)&c==*(int32_t*)&ct) return true;
- }
- }
-
-#if CXIMAGE_SUPPORT_ALPHA
- if (pAlpha) return AlphaGet(x,y)==0;
-#endif
-
- return false;
-}
-////////////////////////////////////////////////////////////////////////////////
-bool CxImage::GetTransparentMask(CxImage* iDst)
-{
- if (!pDib) return false;
-
- CxImage tmp;
- tmp.Create(head.biWidth, head.biHeight, 1, GetType());
- tmp.SetStdPalette();
- tmp.Clear(0);
-
- for(int32_t y=0; y<head.biHeight; y++){
- for(int32_t x=0; x<head.biWidth; x++){
- if (IsTransparent(x,y)){
- tmp.BlindSetPixelIndex(x,y,1);
- }
- }
- }
-
- if (iDst) iDst->Transfer(tmp);
- else Transfer(tmp);
-
- return true;
-}
-////////////////////////////////////////////////////////////////////////////////
-/**
- * Checks if image has the same palette, if any.
- * \param img = image to compare.
- * \param bCheckAlpha = check also the rgbReserved field.
- */
-bool CxImage::IsSamePalette(CxImage &img, bool bCheckAlpha)
-{
- if (head.biClrUsed != img.head.biClrUsed)
- return false;
- if (head.biClrUsed == 0)
- return false;
-
- RGBQUAD c1,c2;
- for (uint32_t n=0; n<head.biClrUsed; n++){
- c1 = GetPaletteColor((uint8_t)n);
- c2 = img.GetPaletteColor((uint8_t)n);
- if (c1.rgbRed != c2.rgbRed) return false;
- if (c1.rgbBlue != c2.rgbBlue) return false;
- if (c1.rgbGreen != c2.rgbGreen) return false;
- if (bCheckAlpha && (c1.rgbReserved != c2.rgbReserved)) return false;
- }
- return true;
-}
-////////////////////////////////////////////////////////////////////////////////
-/**
- * \sa SetClrImportant
- */
-uint32_t CxImage::GetClrImportant() const
-{
- return head.biClrImportant;
-}
-////////////////////////////////////////////////////////////////////////////////
-/**
- * sets the maximum number of colors that some functions like
- * DecreaseBpp() or GetNearestIndex() will use on indexed images
- * \param ncolors should be less than 2^bpp,
- * or 0 if all the colors are important.
- */
-void CxImage::SetClrImportant(uint32_t ncolors)
-{
- if (ncolors==0 || ncolors>256) {
- head.biClrImportant = 0;
- return;
- }
-
- switch(head.biBitCount){
- case 1:
- head.biClrImportant = min(ncolors,2);
- break;
- case 4:
- head.biClrImportant = min(ncolors,16);
- break;
- case 8:
- head.biClrImportant = ncolors;
- break;
- }
- return;
-}
-////////////////////////////////////////////////////////////////////////////////
-/**
- * Returns pointer to pixel. Currently implemented only for truecolor images.
- *
- * \param x,y - coordinates
- *
- * \return pointer to first byte of pixel data
- *
- * \author ***bd*** 2.2004
- */
-void* CxImage::BlindGetPixelPointer(const int32_t x, const int32_t y)
-{
-#ifdef _DEBUG
- if ((pDib==NULL) || !IsInside(x,y))
- #if CXIMAGE_SUPPORT_EXCEPTION_HANDLING
- throw 0;
- #else
- return 0;
- #endif
-#endif
- if (!IsIndexed())
- return info.pImage + y*info.dwEffWidth + x*3;
- else
- return 0;
-}
-////////////////////////////////////////////////////////////////////////////////
-void CxImage::DrawLine(int32_t StartX, int32_t EndX, int32_t StartY, int32_t EndY, COLORREF cr)
-{
- DrawLine(StartX, EndX, StartY, EndY, RGBtoRGBQUAD(cr));
-}
-////////////////////////////////////////////////////////////////////////////////
-void CxImage::DrawLine(int32_t StartX, int32_t EndX, int32_t StartY, int32_t EndY, RGBQUAD color, bool bSetAlpha)
-{
- if (!pDib) return;
- //////////////////////////////////////////////////////
- // Draws a line using the Bresenham line algorithm
- // Thanks to Jordan DeLozier <JDL>
- //////////////////////////////////////////////////////
- int32_t x1 = StartX;
- int32_t y1 = StartY;
- int32_t x = x1; // Start x off at the first pixel
- int32_t y = y1; // Start y off at the first pixel
- int32_t x2 = EndX;
- int32_t y2 = EndY;
-
- int32_t xinc1,xinc2,yinc1,yinc2; // Increasing values
- int32_t den, num, numadd,numpixels;
- int32_t deltax = abs(x2 - x1); // The difference between the x's
- int32_t deltay = abs(y2 - y1); // The difference between the y's
-
- // Get Increasing Values
- if (x2 >= x1) { // The x-values are increasing
- xinc1 = 1;
- xinc2 = 1;
- } else { // The x-values are decreasing
- xinc1 = -1;
- xinc2 = -1;
- }
-
- if (y2 >= y1) { // The y-values are increasing
- yinc1 = 1;
- yinc2 = 1;
- } else { // The y-values are decreasing
- yinc1 = -1;
- yinc2 = -1;
- }
-
- // Actually draw the line
- if (deltax >= deltay) // There is at least one x-value for every y-value
- {
- xinc1 = 0; // Don't change the x when numerator >= denominator
- yinc2 = 0; // Don't change the y for every iteration
- den = deltax;
- num = deltax / 2;
- numadd = deltay;
- numpixels = deltax; // There are more x-values than y-values
- }
- else // There is at least one y-value for every x-value
- {
- xinc2 = 0; // Don't change the x for every iteration
- yinc1 = 0; // Don't change the y when numerator >= denominator
- den = deltay;
- num = deltay / 2;
- numadd = deltax;
- numpixels = deltay; // There are more y-values than x-values
- }
-
- for (int32_t curpixel = 0; curpixel <= numpixels; curpixel++)
- {
- // Draw the current pixel
- SetPixelColor(x,y,color,bSetAlpha);
-
- num += numadd; // Increase the numerator by the top of the fraction
- if (num >= den) // Check if numerator >= denominator
- {
- num -= den; // Calculate the new numerator value
- x += xinc1; // Change the x as appropriate
- y += yinc1; // Change the y as appropriate
- }
- x += xinc2; // Change the x as appropriate
- y += yinc2; // Change the y as appropriate
- }
-}
-////////////////////////////////////////////////////////////////////////////////
-/**
- * Sets a palette with standard colors for 1, 4 and 8 bpp images.
- */
-void CxImage::SetStdPalette()
-{
- if (!pDib) return;
- switch (head.biBitCount){
- case 8:
- {
- const uint8_t pal256[1024] = {0,0,0,0,0,0,128,0,0,128,0,0,0,128,128,0,128,0,0,0,128,0,128,0,128,128,0,0,192,192,192,0,
- 192,220,192,0,240,202,166,0,212,240,255,0,177,226,255,0,142,212,255,0,107,198,255,0,
- 72,184,255,0,37,170,255,0,0,170,255,0,0,146,220,0,0,122,185,0,0,98,150,0,0,74,115,0,0,
- 50,80,0,212,227,255,0,177,199,255,0,142,171,255,0,107,143,255,0,72,115,255,0,37,87,255,0,0,
- 85,255,0,0,73,220,0,0,61,185,0,0,49,150,0,0,37,115,0,0,25,80,0,212,212,255,0,177,177,255,0,
- 142,142,255,0,107,107,255,0,72,72,255,0,37,37,255,0,0,0,254,0,0,0,220,0,0,0,185,0,0,0,150,0,
- 0,0,115,0,0,0,80,0,227,212,255,0,199,177,255,0,171,142,255,0,143,107,255,0,115,72,255,0,
- 87,37,255,0,85,0,255,0,73,0,220,0,61,0,185,0,49,0,150,0,37,0,115,0,25,0,80,0,240,212,255,0,
- 226,177,255,0,212,142,255,0,198,107,255,0,184,72,255,0,170,37,255,0,170,0,255,0,146,0,220,0,
- 122,0,185,0,98,0,150,0,74,0,115,0,50,0,80,0,255,212,255,0,255,177,255,0,255,142,255,0,255,107,255,0,
- 255,72,255,0,255,37,255,0,254,0,254,0,220,0,220,0,185,0,185,0,150,0,150,0,115,0,115,0,80,0,80,0,
- 255,212,240,0,255,177,226,0,255,142,212,0,255,107,198,0,255,72,184,0,255,37,170,0,255,0,170,0,
- 220,0,146,0,185,0,122,0,150,0,98,0,115,0,74,0,80,0,50,0,255,212,227,0,255,177,199,0,255,142,171,0,
- 255,107,143,0,255,72,115,0,255,37,87,0,255,0,85,0,220,0,73,0,185,0,61,0,150,0,49,0,115,0,37,0,
- 80,0,25,0,255,212,212,0,255,177,177,0,255,142,142,0,255,107,107,0,255,72,72,0,255,37,37,0,254,0,
- 0,0,220,0,0,0,185,0,0,0,150,0,0,0,115,0,0,0,80,0,0,0,255,227,212,0,255,199,177,0,255,171,142,0,
- 255,143,107,0,255,115,72,0,255,87,37,0,255,85,0,0,220,73,0,0,185,61,0,0,150,49,0,0,115,37,0,
- 0,80,25,0,0,255,240,212,0,255,226,177,0,255,212,142,0,255,198,107,0,255,184,72,0,255,170,37,0,
- 255,170,0,0,220,146,0,0,185,122,0,0,150,98,0,0,115,74,0,0,80,50,0,0,255,255,212,0,255,255,177,0,
- 255,255,142,0,255,255,107,0,255,255,72,0,255,255,37,0,254,254,0,0,220,220,0,0,185,185,0,0,150,150,0,
- 0,115,115,0,0,80,80,0,0,240,255,212,0,226,255,177,0,212,255,142,0,198,255,107,0,184,255,72,0,
- 170,255,37,0,170,255,0,0,146,220,0,0,122,185,0,0,98,150,0,0,74,115,0,0,50,80,0,0,227,255,212,0,
- 199,255,177,0,171,255,142,0,143,255,107,0,115,255,72,0,87,255,37,0,85,255,0,0,73,220,0,0,61,185,0,
- 0,49,150,0,0,37,115,0,0,25,80,0,0,212,255,212,0,177,255,177,0,142,255,142,0,107,255,107,0,72,255,72,0,
- 37,255,37,0,0,254,0,0,0,220,0,0,0,185,0,0,0,150,0,0,0,115,0,0,0,80,0,0,212,255,227,0,177,255,199,0,
- 142,255,171,0,107,255,143,0,72,255,115,0,37,255,87,0,0,255,85,0,0,220,73,0,0,185,61,0,0,150,49,0,0,
- 115,37,0,0,80,25,0,212,255,240,0,177,255,226,0,142,255,212,0,107,255,198,0,72,255,184,0,37,255,170,0,
- 0,255,170,0,0,220,146,0,0,185,122,0,0,150,98,0,0,115,74,0,0,80,50,0,212,255,255,0,177,255,255,0,
- 142,255,255,0,107,255,255,0,72,255,255,0,37,255,255,0,0,254,254,0,0,220,220,0,0,185,185,0,0,
- 150,150,0,0,115,115,0,0,80,80,0,242,242,242,0,230,230,230,0,218,218,218,0,206,206,206,0,194,194,194,0,
- 182,182,182,0,170,170,170,0,158,158,158,0,146,146,146,0,134,134,134,0,122,122,122,0,110,110,110,0,
- 98,98,98,0,86,86,86,0,74,74,74,0,62,62,62,0,50,50,50,0,38,38,38,0,26,26,26,0,14,14,14,0,240,251,255,0,
- 164,160,160,0,128,128,128,0,0,0,255,0,0,255,0,0,0,255,255,0,255,0,0,0,255,0,255,0,255,255,0,0,255,255,255,0};
- memcpy(GetPalette(),pal256,1024);
- break;
- }
- case 4:
- {
- const uint8_t pal16[64]={0,0,0,0,0,0,128,0,0,128,0,0,0,128,128,0,128,0,0,0,128,0,128,0,128,128,0,0,192,192,192,0,
- 128,128,128,0,0,0,255,0,0,255,0,0,0,255,255,0,255,0,0,0,255,0,255,0,255,255,0,0,255,255,255,0};
- memcpy(GetPalette(),pal16,64);
- break;
- }
- case 1:
- {
- const uint8_t pal2[8]={0,0,0,0,255,255,255,0};
- memcpy(GetPalette(),pal2,8);
- break;
- }
- }
- info.last_c_isvalid = false;
- return;
-}
-////////////////////////////////////////////////////////////////////////////////
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