// xImaWnd.cpp : Windows functions
/* 07/08/2001 v1.00 - Davide Pizzolato - www.xdp.it
* CxImage version 5.99c 17/Oct/2004
*/
#include "ximage.h"
#include "ximaiter.h"
#include "ximabmp.h"
////////////////////////////////////////////////////////////////////////////////
#if CXIMAGE_SUPPORT_WINCE
////////////////////////////////////////////////////////////////////////////////
long CxImage::Blt(HDC pDC, long x, long y)
{
if((pDib==0)||(pDC==0)||(!info.bEnabled)) return 0;
HBRUSH brImage = CreateDIBPatternBrushPt(pDib, DIB_RGB_COLORS);
HBRUSH brOld = (HBRUSH) SelectObject(pDC, brImage);
PatBlt(pDC, 0, 0, head.biWidth, head.biHeight, PATCOPY);
SelectObject(pDC, brOld);
DeleteObject(brImage);
return 1;
}
#endif //CXIMAGE_SUPPORT_WINCE
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
#if CXIMAGE_SUPPORT_WINDOWS
////////////////////////////////////////////////////////////////////////////////
/**
* Transfer the image in a global bitmap handle (clipboard copy)
*/
HANDLE CxImage::CopyToHandle()
{
HANDLE hMem=NULL;
if (pDib){
hMem= GlobalAlloc(GHND, GetSize());
if (hMem){
BYTE* pDst=(BYTE*)GlobalLock(hMem);
if (pDst){
memcpy(pDst,pDib,GetSize());
}
GlobalUnlock(hMem);
}
}
return hMem;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Global object (clipboard paste) constructor
* \param hMem: source bitmap object, the clipboard format must be CF_DIB
* \return true if everything is ok
*/
bool CxImage::CreateFromHANDLE(HANDLE hMem)
{
if (!Destroy())
return false;
DWORD dwSize = GlobalSize(hMem);
if (!dwSize) return false;
BYTE *lpVoid; //pointer to the bitmap
lpVoid = (BYTE *)GlobalLock(hMem);
BITMAPINFOHEADER *pHead; //pointer to the bitmap header
pHead = (BITMAPINFOHEADER *)lpVoid;
if (lpVoid){
//CxMemFile hFile(lpVoid,dwSize);
//copy the bitmap header
memcpy(&head,pHead,sizeof(BITMAPINFOHEADER));
//create the image
if(!Create(head.biWidth,head.biHeight,head.biBitCount)){
GlobalUnlock(lpVoid);
return false;
}
//preserve DPI
if (head.biXPelsPerMeter) SetXDPI((long)floor(head.biXPelsPerMeter * 254.0 / 10000.0 + 0.5)); else SetXDPI(96);
if (head.biYPelsPerMeter) SetYDPI((long)floor(head.biYPelsPerMeter * 254.0 / 10000.0 + 0.5)); else SetYDPI(96);
/*//copy the pixels (old way)
if((pHead->biCompression != BI_RGB) || (pHead->biBitCount == 32)){ //<J�rgen Alfredsson>
// BITFIELD case
// set the internal header in the dib
memcpy(pDib,&head,sizeof(head));
// get the bitfield masks
DWORD bf[3];
memcpy(bf,lpVoid+pHead->biSize,12);
// transform into RGB
Bitfield2RGB(lpVoid+pHead->biSize+12,(WORD)bf[0],(WORD)bf[1],(WORD)bf[2],(BYTE)pHead->biBitCount);
} else { //normal bitmap
memcpy(pDib,lpVoid,GetSize());
}*/
// <Michael Gandyra>
// fill in color map
bool bIsOldBmp = (head.biSize == sizeof(BITMAPCOREHEADER));
RGBQUAD *pRgb = GetPalette();
if (pRgb) {
// number of colors to fill in
int nColors = DibNumColors(pHead);
if (bIsOldBmp) {
/* get pointer to BITMAPCOREINFO (old style 1.x) */
LPBITMAPCOREINFO lpbmc = (LPBITMAPCOREINFO)lpVoid;
for (int i = nColors - 1; i >= 0; i--) {
pRgb[i].rgbRed = lpbmc->bmciColors[i].rgbtRed;
pRgb[i].rgbGreen = lpbmc->bmciColors[i].rgbtGreen;
pRgb[i].rgbBlue = lpbmc->bmciColors[i].rgbtBlue;
pRgb[i].rgbReserved = (BYTE)0;
}
} else {
/* get pointer to BITMAPINFO (new style 3.x) */
LPBITMAPINFO lpbmi = (LPBITMAPINFO)lpVoid;
for (int i = nColors - 1; i >= 0; i--) {
pRgb[i].rgbRed = lpbmi->bmiColors[i].rgbRed;
pRgb[i].rgbGreen = lpbmi->bmiColors[i].rgbGreen;
pRgb[i].rgbBlue = lpbmi->bmiColors[i].rgbBlue;
pRgb[i].rgbReserved = (BYTE)0;
}
}
}
// <Michael Gandyra>
DWORD dwCompression = pHead->biCompression;
// compressed bitmap ?
if(dwCompression!=BI_RGB || pHead->biBitCount==32) {
// get the bitmap bits
LPSTR lpDIBBits = (LPSTR)((BYTE*)pHead + *(DWORD*)pHead + (WORD)(GetNumColors() * sizeof(RGBQUAD)));
// decode and copy them to our image
switch (pHead->biBitCount) {
case 32 :
{
// BITFIELD case
if (dwCompression == BI_BITFIELDS || dwCompression == BI_RGB) {
// get the bitfield masks
DWORD bf[3];
memcpy(bf,lpVoid+pHead->biSize,12);
// transform into RGB
Bitfield2RGB(lpVoid+pHead->biSize+12,(WORD)bf[0],(WORD)bf[1],(WORD)bf[2],(BYTE)pHead->biBitCount);
} else
throw "unknown compression";
}
break;
case 16 :
{
// get the bitfield masks
long offset=0;
DWORD bf[3];
if (dwCompression == BI_BITFIELDS) {
memcpy(bf,lpVoid+pHead->biSize,12);
offset= 12;
} else {
bf[0] = 0x7C00;
bf[1] = 0x3E0;
bf[2] = 0x1F; // RGB555
}
// copy the pixels
memcpy(info.pImage, lpDIBBits + offset, head.biHeight*((head.biWidth+1)/2)*4);
// transform into RGB
Bitfield2RGB(info.pImage, (WORD)bf[0], (WORD)bf[1], (WORD)bf[2], 16);
}
break;
case 8 :
case 4 :
case 1 :
{
switch (dwCompression) {
case BI_RLE4:
{
BYTE status_byte = 0;
BYTE second_byte = 0;
int scanline = 0;
int bits = 0;
BOOL low_nibble = FALSE;
CImageIterator iter(this);
for (BOOL bContinue = TRUE; bContinue; ) {
status_byte = *(lpDIBBits++);
switch (status_byte) {
case RLE_COMMAND :
status_byte = *(lpDIBBits++);
switch (status_byte) {
case RLE_ENDOFLINE :
bits = 0;
scanline++;
low_nibble = FALSE;
break;
case RLE_ENDOFBITMAP :
bContinue = FALSE;
break;
case RLE_DELTA :
{
// read the delta values
BYTE delta_x;
BYTE delta_y;
delta_x = *(lpDIBBits++);
delta_y = *(lpDIBBits++);
// apply them
bits += delta_x / 2;
scanline += delta_y;
break;
}
default :
second_byte = *(lpDIBBits++);
BYTE* sline = iter.GetRow(scanline);
for (int i = 0; i < status_byte; i++) {
if (low_nibble) {
if ((DWORD)(sline + bits) < (DWORD)(info.pImage + head.biSizeImage)) {
*(sline + bits) |= second_byte & 0x0F;
}
if (i != status_byte - 1)
second_byte = *(lpDIBBits++);
bits++;
} else {
if ((DWORD)(sline + bits) <(DWORD)(info.pImage + head.biSizeImage)) {
*(sline + bits) = (BYTE)(second_byte & 0xF0);
}
}
low_nibble = !low_nibble;
}
if ((((status_byte+1) >> 1) & 1 )== 1)
second_byte = *(lpDIBBits++);
break;
};
break;
default :
{
BYTE* sline = iter.GetRow(scanline);
second_byte = *(lpDIBBits++);
for (unsigned i = 0; i < status_byte; i++) {
if (low_nibble) {
if ((DWORD)(sline + bits) <(DWORD)(info.pImage + head.biSizeImage)) {
*(sline + bits) |= second_byte & 0x0F;
}
bits++;
} else {
if ((DWORD)(sline + bits) <(DWORD)(info.pImage + head.biSizeImage)) {
*(sline + bits) = (BYTE)(second_byte & 0xF0);
}
}
low_nibble = !low_nibble;
}
}
break;
};
}
}
break;
case BI_RLE8 :
{
BYTE status_byte = 0;
BYTE second_byte = 0;
int scanline = 0;
int bits = 0;
CImageIterator iter(this);
for (BOOL bContinue = TRUE; bContinue; ) {
status_byte = *(lpDIBBits++);
if (status_byte==RLE_COMMAND) {
status_byte = *(lpDIBBits++);
switch (status_byte) {
case RLE_ENDOFLINE :
bits = 0;
scanline++;
break;
case RLE_ENDOFBITMAP :
bContinue = FALSE;
break;
case RLE_DELTA :
{
// read the delta values
BYTE delta_x;
BYTE delta_y;
delta_x = *(lpDIBBits++);
delta_y = *(lpDIBBits++);
// apply them
bits += delta_x;
scanline += delta_y;
}
break;
default :
int nNumBytes = sizeof(BYTE) * status_byte;
memcpy((void *)(iter.GetRow(scanline) + bits), lpDIBBits, nNumBytes);
lpDIBBits += nNumBytes;
// align run length to even number of bytes
if ((status_byte & 1) == 1)
second_byte = *(lpDIBBits++);
bits += status_byte;
break;
};
} else {
BYTE *sline = iter.GetRow(scanline);
second_byte = *(lpDIBBits++);
for (unsigned i = 0; i < status_byte; i++) {
if ((DWORD)bits<info.dwEffWidth){
*(sline + bits) = second_byte;
bits++;
} else {
bContinue = FALSE;
break;
}
}
}
}
}
break;
default :
throw "compression type not supported";
}
}
}
} else {
//normal bitmap (not compressed)
memcpy(pDib,lpVoid,GetSize());
}
GlobalUnlock(lpVoid);
return true;
}
return false;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Transfer the image in a bitmap handle
* \param hdc: target device context (the screen, usually)
* \return bitmap handle, or NULL if an error occurs.
*/
HBITMAP CxImage::MakeBitmap(HDC hdc)
{
if (!pDib)
return NULL;
if (!hdc){
// this call to CreateBitmap doesn't create a DIB <jaslet>
// // Create a device-independent bitmap <CSC>
// return CreateBitmap(head.biWidth,head.biHeight, 1, head.biBitCount, GetBits());
// use instead this code
HDC hMemDC = CreateCompatibleDC(NULL);
LPVOID pBit32;
HBITMAP bmp = CreateDIBSection(hMemDC,(LPBITMAPINFO)pDib,DIB_RGB_COLORS, &pBit32, NULL, 0);
if (pBit32) memcpy(pBit32, GetBits(), head.biSizeImage);
DeleteDC(hMemDC);
return bmp;
}
// this single line seems to work very well
HBITMAP bmp = CreateDIBitmap(hdc, (LPBITMAPINFOHEADER)pDib, CBM_INIT,
GetBits(), (LPBITMAPINFO)pDib, DIB_RGB_COLORS);
return bmp;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Bitmap resource constructor
* \param hbmp : bitmap resource handle
* \param hpal : (optional) palette, useful for 8bpp DC
* \return true if everything is ok
*/
bool CxImage::CreateFromHBITMAP(HBITMAP hbmp, HPALETTE hpal)
{
if (!Destroy())
return false;
if (hbmp) {
BITMAP bm;
// get informations about the bitmap
GetObject(hbmp, sizeof(BITMAP), (LPSTR) &bm);
// create the image
if (!Create(bm.bmWidth, bm.bmHeight, bm.bmBitsPixel, 0))
return false;
// create a device context for the bitmap
HDC dc = ::GetDC(NULL);
if (!dc)
return false;
if (hpal){
SelectObject(dc,hpal); //the palette you should get from the user or have a stock one
RealizePalette(dc);
}
// copy the pixels
if (GetDIBits(dc, hbmp, 0, head.biHeight, info.pImage,
(LPBITMAPINFO)pDib, DIB_RGB_COLORS) == 0){ //replace &head with pDib <Wil Stark>
strcpy(info.szLastError,"GetDIBits failed");
::ReleaseDC(NULL, dc);
return false;
}
::ReleaseDC(NULL, dc);
return true;
}
return false;
}
////////////////////////////////////////////////////////////////////////////////
/**
* icon resource constructor
* \param hico : icon resource handle
* \return true if everything is ok
*/
bool CxImage::CreateFromHICON(HICON hico)
{
if (!Destroy())
return false;
if (hico) {
ICONINFO iinfo;
GetIconInfo(hico,&iinfo);
if (!CreateFromHBITMAP(iinfo.hbmColor))
return false;
#if CXIMAGE_SUPPORT_ALPHA
CxImage mask;
mask.CreateFromHBITMAP(iinfo.hbmMask);
mask.GrayScale();
mask.Negative();
AlphaSet(mask);
#endif
DeleteObject(iinfo.hbmColor); //<Sims>
DeleteObject(iinfo.hbmMask); //<Sims>
return true;
}
return false;
}
////////////////////////////////////////////////////////////////////////////////
long CxImage::Draw(HDC hdc, const RECT& rect, RECT* pClipRect, bool bSmooth)
{
return Draw(hdc, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, pClipRect,bSmooth);
}
////////////////////////////////////////////////////////////////////////////////
/**
* Draws the image in the specified device context, with support for alpha channel, alpha palette, transparency, opacity.
* \param hdc : destination device context
* \param x,y : (optional) offset
* \param cx,cy : (optional) size.
* - If cx or cy are not specified (or less than 0), the normal width or height will be used
* - If cx or cy are different than width or height, the image will be stretched
*
* \param pClipRect : limit the drawing operations inside a given rectangle in the output device context.
* \param bSmooth : activates a bilinear filter that will enhance the appearence for zommed pictures.
* Quite slow. Needs CXIMAGE_SUPPORT_INTERPOLATION.
* \return true if everything is ok
*/
long CxImage::Draw(HDC hdc, long x, long y, long cx, long cy, RECT* pClipRect, bool bSmooth)
{
if((pDib==0)||(hdc==0)||(cx==0)||(cy==0)||(!info.bEnabled)) return 0;
if (cx < 0) cx = head.biWidth;
if (cy < 0) cy = head.biHeight;
bool bTransparent = info.nBkgndIndex != -1;
bool bAlpha = pAlpha != 0;
RECT mainbox; // (experimental)
if (pClipRect){
GetClipBox(hdc,&mainbox);
HRGN rgn = CreateRectRgnIndirect(pClipRect);
ExtSelectClipRgn(hdc,rgn,RGN_AND);
DeleteObject(rgn);
}
//find the smallest area to paint
RECT clipbox,paintbox;
GetClipBox(hdc,&clipbox);
paintbox.top = min(clipbox.bottom,max(clipbox.top,y));
paintbox.left = min(clipbox.right,max(clipbox.left,x));
paintbox.right = max(clipbox.left,min(clipbox.right,x+cx));
paintbox.bottom = max(clipbox.top,min(clipbox.bottom,y+cy));
long destw = paintbox.right - paintbox.left;
long desth = paintbox.bottom - paintbox.top;
if (!(bTransparent || bAlpha || info.bAlphaPaletteEnabled)){
if (cx==head.biWidth && cy==head.biHeight){ //NORMAL
SetStretchBltMode(hdc,COLORONCOLOR);
SetDIBitsToDevice(hdc, x, y, cx, cy, 0, 0, 0, cy,
info.pImage,(BITMAPINFO*)pDib,DIB_RGB_COLORS);
} else { //STRETCH
//pixel informations
RGBQUAD c={0,0,0,0};
//Preparing Bitmap Info
BITMAPINFO bmInfo;
memset(&bmInfo.bmiHeader,0,sizeof(BITMAPINFOHEADER));
bmInfo.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
bmInfo.bmiHeader.biWidth=destw;
bmInfo.bmiHeader.biHeight=desth;
bmInfo.bmiHeader.biPlanes=1;
bmInfo.bmiHeader.biBitCount=24;
BYTE *pbase; //points to the final dib
BYTE *pdst; //current pixel from pbase
BYTE *ppix; //current pixel from image
//get the background
HDC TmpDC=CreateCompatibleDC(hdc);
HBITMAP TmpBmp=CreateDIBSection(hdc,&bmInfo,DIB_RGB_COLORS,(void**)&pbase,0,0);
HGDIOBJ TmpObj=SelectObject(TmpDC,TmpBmp);
if (pbase){
long xx,yy;
long sx,sy;
float dx,dy;
BYTE *psrc;
long ew = ((((24 * destw) + 31) / 32) * 4);
long ymax = paintbox.bottom;
long xmin = paintbox.left;
float fx=(float)head.biWidth/(float)cx;
float fy=(float)head.biHeight/(float)cy;
for(yy=0;yy<desth;yy++){
dy = head.biHeight-(ymax-yy-y)*fy;
sy = max(0L,(long)floor(dy));
psrc = info.pImage+sy*info.dwEffWidth;
pdst = pbase+yy*ew;
for(xx=0;xx<destw;xx++){
dx = (xx+xmin-x)*fx;
sx = max(0L,(long)floor(dx));
#if CXIMAGE_SUPPORT_INTERPOLATION
if (bSmooth){
c = GetPixelColorInterpolated(dx - 0.5f, dy - 0.5f, CxImage::IM_BILINEAR, CxImage::OM_REPEAT);
} else
#endif //CXIMAGE_SUPPORT_INTERPOLATION
{
if (head.biClrUsed){
c=GetPaletteColor(GetPixelIndex(sx,sy));
} else {
ppix = psrc + sx*3;
c.rgbBlue = *ppix++;
c.rgbGreen= *ppix++;
c.rgbRed = *ppix;
}
}
*pdst++=c.rgbBlue;
*pdst++=c.rgbGreen;
*pdst++=c.rgbRed;
}
}
}
//paint the image & cleanup
SetDIBitsToDevice(hdc,paintbox.left,paintbox.top,destw,desth,0,0,0,desth,pbase,&bmInfo,0);
DeleteObject(SelectObject(TmpDC,TmpObj));
DeleteDC(TmpDC);
}
} else { // draw image with transparent/alpha blending
//////////////////////////////////////////////////////////////////
//Alpha blend - Thanks to Florian Egel
//pixel informations
RGBQUAD c={0,0,0,0};
RGBQUAD ct = GetTransColor();
long* pc = (long*)&c;
long* pct= (long*)&ct;
long cit = GetTransIndex();
long ci;
//Preparing Bitmap Info
BITMAPINFO bmInfo;
memset(&bmInfo.bmiHeader,0,sizeof(BITMAPINFOHEADER));
bmInfo.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
bmInfo.bmiHeader.biWidth=destw;
bmInfo.bmiHeader.biHeight=desth;
bmInfo.bmiHeader.biPlanes=1;
bmInfo.bmiHeader.biBitCount=24;
BYTE *pbase; //points to the final dib
BYTE *pdst; //current pixel from pbase
BYTE *ppix; //current pixel from image
//get the background
HDC TmpDC=CreateCompatibleDC(hdc);
HBITMAP TmpBmp=CreateDIBSection(hdc,&bmInfo,DIB_RGB_COLORS,(void**)&pbase,0,0);
HGDIOBJ TmpObj=SelectObject(TmpDC,TmpBmp);
BitBlt(TmpDC,0,0,destw,desth,hdc,paintbox.left,paintbox.top,SRCCOPY);
if (pbase){
long xx,yy,alphaoffset,ix,iy;
BYTE a,a1,*psrc;
long ew = ((((24 * destw) + 31) / 32) * 4);
long ymax = paintbox.bottom;
long xmin = paintbox.left;
if (cx!=head.biWidth || cy!=head.biHeight){
//STRETCH
float fx=(float)head.biWidth/(float)cx;
float fy=(float)head.biHeight/(float)cy;
float dx,dy;
long sx,sy;
for(yy=0;yy<desth;yy++){
dy = head.biHeight-(ymax-yy-y)*fy;
sy = max(0L,(long)floor(dy));
alphaoffset = sy*head.biWidth;
pdst = pbase + yy*ew;
psrc = info.pImage + sy*info.dwEffWidth;
for(xx=0;xx<destw;xx++){
dx = (xx+xmin-x)*fx;
sx = max(0L,(long)floor(dx));
if (bAlpha) a=pAlpha[alphaoffset+sx]; else a=255;
a =(BYTE)((a*(1+info.nAlphaMax))>>8);
if (head.biClrUsed){
ci = GetPixelIndex(sx,sy);
#if CXIMAGE_SUPPORT_INTERPOLATION
if (bSmooth){
c = GetPixelColorInterpolated(dx - 0.5f, dy - 0.5f, CxImage::IM_BILINEAR, CxImage::OM_REPEAT);
} else
#endif //CXIMAGE_SUPPORT_INTERPOLATION
{
c = GetPaletteColor(GetPixelIndex(sx,sy));
}
if (info.bAlphaPaletteEnabled){
a = (BYTE)((a*(1+c.rgbReserved))>>8);
}
} else {
#if CXIMAGE_SUPPORT_INTERPOLATION
if (bSmooth){
c = GetPixelColorInterpolated(dx - 0.5f, dy - 0.5f, CxImage::IM_BILINEAR, CxImage::OM_REPEAT);
} else
#endif //CXIMAGE_SUPPORT_INTERPOLATION
{
ppix = psrc + sx*3;
c.rgbBlue = *ppix++;
c.rgbGreen= *ppix++;
c.rgbRed = *ppix;
}
}
//if (*pc!=*pct || !bTransparent){
//if ((head.biClrUsed && ci!=cit) || ((!head.biClrUsed||bSmooth) && *pc!=*pct) || !bTransparent){
if ((head.biClrUsed && ci!=cit) || (!head.biClrUsed && *pc!=*pct) || !bTransparent){
// DJT, assume many pixels are fully transparent or opaque and thus avoid multiplication
if (a == 0) { // Transparent, retain dest
pdst+=3;
} else if (a == 255) { // opaque, ignore dest
*pdst++= c.rgbBlue;
*pdst++= c.rgbGreen;
*pdst++= c.rgbRed;
} else { // semi transparent
a1=(BYTE)~a;
*pdst++=(BYTE)((*pdst * a1 + a * c.rgbBlue)>>8);
*pdst++=(BYTE)((*pdst * a1 + a * c.rgbGreen)>>8);
*pdst++=(BYTE)((*pdst * a1 + a * c.rgbRed)>>8);
}
} else {
pdst+=3;
}
}
}
} else {
//NORMAL
iy=head.biHeight-ymax+y;
for(yy=0;yy<desth;yy++,iy++){
alphaoffset=iy*head.biWidth;
ix=xmin-x;
pdst=pbase+yy*ew;
ppix=info.pImage+iy*info.dwEffWidth+ix*3;
for(xx=0;xx<destw;xx++,ix++){
if (bAlpha) a=pAlpha[alphaoffset+ix]; else a=255;
a = (BYTE)((a*(1+info.nAlphaMax))>>8);
if (head.biClrUsed){
ci = GetPixelIndex(ix,iy);
c = GetPaletteColor((BYTE)ci);
if (info.bAlphaPaletteEnabled){
a = (BYTE)((a*(1+c.rgbReserved))>>8);
}
} else {
c.rgbBlue = *ppix++;
c.rgbGreen= *ppix++;
c.rgbRed = *ppix++;
}
//if (*pc!=*pct || !bTransparent){
if ((head.biClrUsed && ci!=cit) || (!head.biClrUsed && *pc!=*pct) || !bTransparent){
// DJT, assume many pixels are fully transparent or opaque and thus avoid multiplication
if (a == 0) { // Transparent, retain dest
pdst+=3;
} else if (a == 255) { // opaque, ignore dest
*pdst++= c.rgbBlue;
*pdst++= c.rgbGreen;
*pdst++= c.rgbRed;
} else { // semi transparent
a1=(BYTE)~a;
*pdst++=(BYTE)((*pdst * a1 + a * c.rgbBlue)>>8);
*pdst++=(BYTE)((*pdst * a1 + a * c.rgbGreen)>>8);
*pdst++=(BYTE)((*pdst * a1 + a * c.rgbRed)>>8);
}
} else {
pdst+=3;
}
}
}
}
}
//paint the image & cleanup
SetDIBitsToDevice(hdc,paintbox.left,paintbox.top,destw,desth,0,0,0,desth,pbase,&bmInfo,0);
DeleteObject(SelectObject(TmpDC,TmpObj));
DeleteDC(TmpDC);
}
if (pClipRect){ // (experimental)
HRGN rgn = CreateRectRgnIndirect(&mainbox);
ExtSelectClipRgn(hdc,rgn,RGN_OR);
DeleteObject(rgn);
}
return 1;
}
////////////////////////////////////////////////////////////////////////////////
long CxImage::Draw2(HDC hdc, const RECT& rect)
{
return Draw2(hdc, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top);
}
////////////////////////////////////////////////////////////////////////////////
/**
* Draws (stretch) the image with single transparency support
* \param hdc : destination device context
* \param x,y : (optional) offset
* \param cx,cy : (optional) size.
* - If cx or cy are not specified (or less than 0), the normal width or height will be used
* - If cx or cy are different than width or height, the image will be stretched
*
* \return true if everything is ok
*/
long CxImage::Draw2(HDC hdc, long x, long y, long cx, long cy)
{
if((pDib==0)||(hdc==0)||(cx==0)||(cy==0)||(!info.bEnabled)) return 0;
if (cx < 0) cx = head.biWidth;
if (cy < 0) cy = head.biHeight;
bool bTransparent = (info.nBkgndIndex != -1);
if (!bTransparent){
SetStretchBltMode(hdc,COLORONCOLOR);
StretchDIBits(hdc, x, y, cx, cy, 0, 0, head.biWidth, head.biHeight,
info.pImage,(BITMAPINFO*)pDib, DIB_RGB_COLORS,SRCCOPY);
} else {
// draw image with transparent background
const int safe = 0; // or else GDI fails in the following - sometimes
RECT rcDst = {x+safe, y+safe, x+cx, y+cy};
if (RectVisible(hdc, &rcDst)){
/////////////////////////////////////////////////////////////////
// True Mask Method - Thanks to Paul Reynolds and Ron Gery
int nWidth = head.biWidth;
int nHeight = head.biHeight;
// Create two memory dcs for the image and the mask
HDC dcImage=CreateCompatibleDC(hdc);
HDC dcTrans=CreateCompatibleDC(hdc);
// Select the image into the appropriate dc
HBITMAP bm = CreateCompatibleBitmap(hdc, nWidth, nHeight);
HBITMAP pOldBitmapImage = (HBITMAP)SelectObject(dcImage,bm);
SetStretchBltMode(dcImage,COLORONCOLOR);
StretchDIBits(dcImage, 0, 0, nWidth, nHeight, 0, 0, nWidth, nHeight,
info.pImage,(BITMAPINFO*)pDib,DIB_RGB_COLORS,SRCCOPY);
// Create the mask bitmap
HBITMAP bitmapTrans = CreateBitmap(nWidth, nHeight, 1, 1, NULL);
// Select the mask bitmap into the appropriate dc
HBITMAP pOldBitmapTrans = (HBITMAP)SelectObject(dcTrans, bitmapTrans);
// Build mask based on transparent colour
RGBQUAD rgbBG;
if (head.biBitCount<24) rgbBG = GetPaletteColor((BYTE)info.nBkgndIndex);
else rgbBG = info.nBkgndColor;
COLORREF crColour = RGB(rgbBG.rgbRed, rgbBG.rgbGreen, rgbBG.rgbBlue);
COLORREF crOldBack = SetBkColor(dcImage,crColour);
BitBlt(dcTrans,0, 0, nWidth, nHeight, dcImage, 0, 0, SRCCOPY);
// Do the work - True Mask method - cool if not actual display
StretchBlt(hdc,x, y,cx,cy, dcImage, 0, 0, nWidth, nHeight, SRCINVERT);
StretchBlt(hdc,x, y,cx,cy, dcTrans, 0, 0, nWidth, nHeight, SRCAND);
StretchBlt(hdc,x, y,cx,cy, dcImage, 0, 0, nWidth, nHeight, SRCINVERT);
// Restore settings
SelectObject(dcImage,pOldBitmapImage);
SelectObject(dcTrans,pOldBitmapTrans);
SetBkColor(hdc,crOldBack);
DeleteObject( bitmapTrans ); // RG 29/01/2002
DeleteDC(dcImage);
DeleteDC(dcTrans);
DeleteObject(bm);
}
}
return 1;
}
////////////////////////////////////////////////////////////////////////////////
long CxImage::Stretch(HDC hdc, const RECT& rect, DWORD dwRop)
{
return Stretch(hdc, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, dwRop);
}
////////////////////////////////////////////////////////////////////////////////
/**
* Stretch the image. Obsolete: use Draw() or Draw2()
* \param hdc : destination device context
* \param xoffset,yoffset : (optional) offset
* \param xsize,ysize : size.
* \param dwRop : raster operation code (see BitBlt documentation)
* \return true if everything is ok
*/
long CxImage::Stretch(HDC hdc, long xoffset, long yoffset, long xsize, long ysize, DWORD dwRop)
{
if((pDib)&&(hdc)) {
//palette must be correctly filled
SetStretchBltMode(hdc,COLORONCOLOR);
StretchDIBits(hdc, xoffset, yoffset,
xsize, ysize, 0, 0, head.biWidth, head.biHeight,
info.pImage,(BITMAPINFO*)pDib,DIB_RGB_COLORS,dwRop);
return 1;
}
return 0;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Tiles the device context in the specified rectangle with the image.
* \param hdc : destination device context
* \param rc : tiled rectangle in the output device context
* \return true if everything is ok
*/
long CxImage::Tile(HDC hdc, RECT *rc)
{
if((pDib)&&(hdc)&&(rc)) {
int w = rc->right - rc->left;
int h = rc->bottom - rc->top;
int x,y,z;
int bx=head.biWidth;
int by=head.biHeight;
for (y = 0 ; y < h ; y += by){
if ((y+by)>h) by=h-y;
z=bx;
for (x = 0 ; x < w ; x += z){
if ((x+z)>w) z=w-x;
RECT r = {rc->left + x,rc->top + y,rc->left + x + z,rc->top + y + by};
Draw(hdc,rc->left + x, rc->top + y,-1,-1,&r);
}
}
return 1;
}
return 0;
}
////////////////////////////////////////////////////////////////////////////////
// For UNICODE support: char -> TCHAR
long CxImage::DrawString(HDC hdc, long x, long y, const TCHAR* text, RGBQUAD color, const TCHAR* font, long lSize, long lWeight, BYTE bItalic, BYTE bUnderline, bool bSetAlpha)
//long CxImage::DrawString(HDC hdc, long x, long y, const char* text, RGBQUAD color, const char* font, long lSize, long lWeight, BYTE bItalic, BYTE bUnderline, bool bSetAlpha)
{
if (IsValid()){
//get the background
HDC TmpDC=CreateCompatibleDC(hdc);
//choose the font
HFONT m_Font;
LOGFONT* m_pLF;
m_pLF=(LOGFONT*)calloc(1,sizeof(LOGFONT));
_tcsncpy(m_pLF->lfFaceName,font,31); // For UNICODE support
//strncpy(m_pLF->lfFaceName,font,31);
m_pLF->lfHeight=lSize;
m_pLF->lfWeight=lWeight;
m_pLF->lfItalic=bItalic;
m_pLF->lfUnderline=bUnderline;
m_Font=CreateFontIndirect(m_pLF);
//select the font in the dc
HFONT pOldFont=NULL;
if (m_Font)
pOldFont = (HFONT)SelectObject(TmpDC,m_Font);
else
pOldFont = (HFONT)SelectObject(TmpDC,GetStockObject(DEFAULT_GUI_FONT));
//Set text color
SetTextColor(TmpDC,RGB(255,255,255));
SetBkColor(TmpDC,RGB(0,0,0));
//draw the text
SetBkMode(TmpDC,OPAQUE);
//Set text position;
RECT pos = {0,0,0,0};
//long len = (long)strlen(text);
long len = (long)_tcslen(text); // For UNICODE support
::DrawText(TmpDC,text,len,&pos,DT_CALCRECT);
pos.right+=pos.bottom; //for italics
//Preparing Bitmap Info
long width=pos.right;
long height=pos.bottom;
BITMAPINFO bmInfo;
memset(&bmInfo.bmiHeader,0,sizeof(BITMAPINFOHEADER));
bmInfo.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
bmInfo.bmiHeader.biWidth=width;
bmInfo.bmiHeader.biHeight=height;
bmInfo.bmiHeader.biPlanes=1;
bmInfo.bmiHeader.biBitCount=24;
BYTE *pbase; //points to the final dib
HBITMAP TmpBmp=CreateDIBSection(TmpDC,&bmInfo,DIB_RGB_COLORS,(void**)&pbase,0,0);
HGDIOBJ TmpObj=SelectObject(TmpDC,TmpBmp);
memset(pbase,0,height*((((24 * width) + 31) / 32) * 4));
::DrawText(TmpDC,text,len,&pos,0);
CxImage itext;
itext.CreateFromHBITMAP(TmpBmp);
y=head.biHeight-y-1;
for (long ix=0;ix<width;ix++){
for (long iy=0;iy<height;iy++){
if (itext.GetPixelColor(ix,iy).rgbBlue) SetPixelColor(x+ix,y+iy,color,bSetAlpha);
}
}
//cleanup
if (pOldFont) SelectObject(TmpDC,pOldFont);
DeleteObject(m_Font);
free(m_pLF);
DeleteObject(SelectObject(TmpDC,TmpObj));
DeleteDC(TmpDC);
}
return 1;
}
////////////////////////////////////////////////////////////////////////////////
// <VATI>
long CxImage::DrawStringEx(HDC hdc, long x, long y, CXTEXTINFO *pTextType, bool bSetAlpha )
{
if (!IsValid())
return -1;
//get the background
HDC pDC;
if (hdc) pDC=hdc; else pDC = ::GetDC(0);
HDC TmpDC=CreateCompatibleDC(pDC);
//choose the font
HFONT m_Font;
m_Font=CreateFontIndirect( &pTextType->lfont );
// get colors in RGBQUAD
RGBQUAD p_forecolor = RGBtoRGBQUAD(pTextType->fcolor);
RGBQUAD p_backcolor = RGBtoRGBQUAD(pTextType->bcolor);
// check alignment and re-set default if necessary
if ( pTextType->align != DT_CENTER &&
pTextType->align != DT_LEFT &&
pTextType->align != DT_RIGHT )
pTextType->align = DT_CENTER;
// check rounding radius and re-set default if necessary
if ( pTextType->b_round > 50 || pTextType->b_round < 0 )
pTextType->b_round = 10;
// check opacity and re-set default if necessary
if ( pTextType->b_opacity > 1. || pTextType->b_opacity < .0 )
pTextType->b_opacity = 0.;
//select the font in the dc
HFONT pOldFont=NULL;
if (m_Font)
pOldFont = (HFONT)SelectObject(TmpDC,m_Font);
else
pOldFont = (HFONT)SelectObject(TmpDC,GetStockObject(DEFAULT_GUI_FONT));
//Set text color
SetTextColor(TmpDC,RGB(255,255,255));
SetBkColor(TmpDC,RGB(0,0,0));
SetBkMode(TmpDC,OPAQUE);
//Set text position;
RECT pos = {0,0,0,0};
// get text length and number of lines
long i=0, numlines=1, len=(long)_tcsclen(pTextType->text);
while (i<len)
{
if ( pTextType->text[i++]==13 )
numlines++;
}
::DrawText(TmpDC, pTextType->text, len, &pos, /*DT_EDITCONTROL|DT_EXTERNALLEADING|*/DT_NOPREFIX | DT_CALCRECT );
// increase only if it's really italics, and only one line height
if ( pTextType->lfont.lfItalic )
pos.right += pos.bottom/2/numlines;
// background frame and rounding radius
int frame = 0, roundR = 0;
if ( pTextType->opaque )
{
roundR= (int)(pos.bottom/numlines * pTextType->b_round / 100 ) ;
frame = (int)(/*3.5 + */0.29289*roundR ) ;
pos.right += pos.bottom/numlines/3 ; // JUST FOR BEAUTY
}
//Preparing Bitmap Info
long width=pos.right +frame*2;
long height=pos.bottom +frame*2;
BITMAPINFO bmInfo;
memset(&bmInfo.bmiHeader,0,sizeof(BITMAPINFOHEADER));
bmInfo.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
bmInfo.bmiHeader.biWidth=width;
bmInfo.bmiHeader.biHeight=height;
bmInfo.bmiHeader.biPlanes=1;
bmInfo.bmiHeader.biBitCount=24;
BYTE *pbase; //points to the final dib
HBITMAP TmpBmp=CreateDIBSection(TmpDC,&bmInfo,DIB_RGB_COLORS,(void**)&pbase,0,0);
HGDIOBJ TmpObj=SelectObject(TmpDC,TmpBmp);
memset(pbase,0,height*((((24 * width) + 31) / 32) * 4));
::DrawText(TmpDC,pTextType->text,len, &pos, /*DT_EDITCONTROL|DT_EXTERNALLEADING|*/DT_NOPREFIX| pTextType->align );
CxImage itext;
itext.CreateFromHBITMAP(TmpBmp);
y=head.biHeight-y-1;
//move the insertion point according to alignment type
// DT_CENTER: cursor points to the center of text rectangle
// DT_RIGHT: cursor points to right side end of text rectangle
// DT_LEFT: cursor points to left end of text rectangle
if ( pTextType->align == DT_CENTER )
x -= width/2;
else if ( pTextType->align == DT_RIGHT )
x -= width;
if (x<0) x=0;
//draw the background first, if it exists
long ix,iy;
if ( pTextType->opaque )
{
int ixf=0;
for (ix=0;ix<width;ix++)
{
if ( ix<=roundR )
ixf = (int)(.5+roundR-sqrt((float)(roundR*roundR-(ix-roundR)*(ix-roundR))));
else if ( ix>=width-roundR-1 )
ixf = (int)(.5+roundR-sqrt((float)(roundR*roundR-(width-1-ix-roundR)*(width-1-ix-roundR))));
else
ixf=0;
for (iy=0;iy<height;iy++)
{
if ( (ix<=roundR && ( iy > height-ixf-1 || iy < ixf )) ||
(ix>=width-roundR-1 && ( iy > height-ixf-1 || iy < ixf )) )
continue;
else
if ( pTextType->b_opacity > 0.0 && pTextType->b_opacity < 1.0 )
{
RGBQUAD bcolor, pcolor;
// calculate a transition color from original image to background color:
pcolor = GetPixelColor(x+ix,y+iy);
bcolor.rgbBlue = (unsigned char)(pTextType->b_opacity * pcolor.rgbBlue + (1.0-pTextType->b_opacity) * p_backcolor.rgbBlue );
bcolor.rgbRed = (unsigned char)(pTextType->b_opacity * pcolor.rgbRed + (1.0-pTextType->b_opacity) * p_backcolor.rgbRed ) ;
bcolor.rgbGreen = (unsigned char)(pTextType->b_opacity * pcolor.rgbGreen + (1.0-pTextType->b_opacity) * p_backcolor.rgbGreen ) ;
bcolor.rgbReserved = 0;
SetPixelColor(x+ix,y+iy,bcolor,bSetAlpha);
}
else
SetPixelColor(x+ix,y+iy,p_backcolor,bSetAlpha);
}
}
}
// draw the text itself
for (ix=0;ix<width;ix++)
{
for (iy=0;iy<height;iy++)
{
if (itext.GetPixelColor(ix,iy).rgbBlue )
SetPixelColor(x+ix+frame,y+iy-frame,p_forecolor,bSetAlpha);
}
}
//cleanup
if (pOldFont) SelectObject(TmpDC,pOldFont);
DeleteObject(m_Font);
DeleteObject(SelectObject(TmpDC,TmpObj));
DeleteDC(TmpDC);
return 1;
}
//////////////////////////////////////////////////////////////////////////////
void CxImage::InitTextInfo( CXTEXTINFO *txt )
{
memset( txt, 0, sizeof(CXTEXTINFO));
// LOGFONT defaults
txt->lfont.lfHeight = -36;
txt->lfont.lfCharSet = EASTEUROPE_CHARSET; // just for Central-European users
txt->lfont.lfWeight = FW_NORMAL;
txt->lfont.lfWidth = 0;
txt->lfont.lfEscapement = 0;
txt->lfont.lfOrientation = 0;
txt->lfont.lfItalic = FALSE;
txt->lfont.lfUnderline = FALSE;
txt->lfont.lfStrikeOut = FALSE;
txt->lfont.lfOutPrecision = OUT_DEFAULT_PRECIS;
txt->lfont.lfClipPrecision = CLIP_DEFAULT_PRECIS;
txt->lfont.lfQuality = PROOF_QUALITY;
txt->lfont.lfPitchAndFamily= DEFAULT_PITCH | FF_DONTCARE ;
_stprintf( txt->lfont.lfFaceName, _T("Arial")); //use TCHAR mappings <Cesar M>
// initial colors
txt->fcolor = RGB( 255,255,160 ); // default foreground: light goldyellow
txt->bcolor = RGB( 32, 96, 0 ); // default background: deep green
// background
txt->opaque = TRUE; // text has a non-transparent background;
txt->b_opacity = 0.0; // default: opaque background
txt->b_outline = 0; // default: no outline (OUTLINE NOT IMPLEMENTED AT THIS TIME)
txt->b_round = 20; // default: rounding radius is 20% of the rectangle height
// the text
_stprintf( txt->text, _T("Sample Text 01234��")); // text use TCHAR mappings <Cesar M>
txt->align = DT_CENTER;
return;
}
////////////////////////////////////////////////////////////////////////////////
#endif //CXIMAGE_SUPPORT_WINDOWS
////////////////////////////////////////////////////////////////////////////////
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