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// xImaWnd.cpp : Windows functions
/* 07/08/2001 v1.00 - ing.davide.pizzolato@libero.it
* CxImage version 5.71 25/Apr/2003
*/
#include "ximage.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());
BYTE* pDst=(BYTE*)GlobalLock(hMem);
memcpy(pDst,pDib,GetSize());
GlobalUnlock(hMem);
}
return hMem;
}
////////////////////////////////////////////////////////////////////////////////
// Global object (clipboard paste) constructor
// ? the clipboard format must be CF_DIB.
// > hMem: source bitmap object
bool CxImage::CreateFromHANDLE(HANDLE hMem)
{
if (pDib) {free(pDib); pDib=NULL;}
BYTE *lpVoid; //pointer to the bitmap
lpVoid = (BYTE *)GlobalLock(hMem);
BITMAPINFOHEADER *pHead; //pointer to the bitmap header
pHead = (BITMAPINFOHEADER *)lpVoid;
if (lpVoid){
//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
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());
}
GlobalUnlock(lpVoid);
return true;
}
return false;
}
////////////////////////////////////////////////////////////////////////////////
// Transfer the image in a bitmap handle
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);
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
// > hbmp: bitmap resource handle
void CxImage::CreateFromHBITMAP(HBITMAP hbmp)
{
if (pDib) {free(pDib); pDib=NULL;}
if (hbmp) {
BITMAP bm;
// get informations about the bitmap
GetObject(hbmp, sizeof(BITMAP), (LPSTR) &bm);
// create the image
Create(bm.bmWidth, bm.bmHeight, bm.bmBitsPixel, 0);
// create a device context for the bitmap
HDC dc = ::GetDC(NULL);
// 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;
}
::ReleaseDC(NULL, dc);
}
}
////////////////////////////////////////////////////////////////////////////////
void CxImage::CreateFromHICON(HICON hico)
{
Destroy();
if (hico) {
ICONINFO iinfo;
GetIconInfo(hico,&iinfo);
CreateFromHBITMAP(iinfo.hbmColor);
#if CXIMAGE_SUPPORT_ALPHA
CxImage mask;
mask.CreateFromHBITMAP(iinfo.hbmMask);
mask.GrayScale();
mask.Negative();
AlphaSet(mask);
#endif
}
}
////////////////////////////////////////////////////////////////////////////////
// Draws (stretch) the image with transparency & alpha support
// > hdc: destination device context
// > x,y: (optional) offset
// > cx,cy: (optional) size.
long CxImage::Draw(HDC hdc, long x, long y, long cx, long cy, RECT* pClipRect)
{
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);
}
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
RECT clipbox,paintbox;
GetClipBox(hdc,&clipbox);
paintbox.left = min(clipbox.right,max(clipbox.left,x));
paintbox.right = max(clipbox.left,min(clipbox.right,x+cx));
paintbox.top = min(clipbox.bottom,max(clipbox.top,y));
paintbox.bottom = max(clipbox.top,min(clipbox.bottom,y+cy));
long destw = paintbox.right - paintbox.left;
long desth = paintbox.bottom - paintbox.top;
//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,yoffset;
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;
long sx,sy;
for(yy=0;yy<desth;yy++){
sy=max(0L,head.biHeight-(long)ceil(((ymax-yy-y)*fy)));
yoffset=sy*head.biWidth;
pdst=pbase+yy*ew;
for(xx=0;xx<destw;xx++){
sx=(long)floor(((xx+xmin-x)*fx));
if (head.biClrUsed){
c=GetPaletteColor(GetPixelIndex(sx,sy));
} else {
ppix=info.pImage+sy*info.dwEffWidth+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
//find the smallest area to paint
RECT clipbox,paintbox;
GetClipBox(hdc,&clipbox);
paintbox.left = min(clipbox.right,max(clipbox.left,x));
paintbox.right = max(clipbox.left,min(clipbox.right,x+cx));
paintbox.top = min(clipbox.bottom,max(clipbox.top,y));
paintbox.bottom = max(clipbox.top,min(clipbox.bottom,y+cy));
long destw = paintbox.right - paintbox.left;
long desth = paintbox.bottom - paintbox.top;
//pixel informations
RGBQUAD c={0,0,0,0};
RGBQUAD ct = GetTransColor();
long* pc = (long*)&c;
long* pct= (long*)&ct;
//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,yoffset,ix,iy;
BYTE a,a1;
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;
long sx,sy;
for(yy=0;yy<desth;yy++){
sy=max(0L,head.biHeight-(long)ceil(((ymax-yy-y)*fy)));
yoffset=sy*head.biWidth;
pdst=pbase+yy*ew;
for(xx=0;xx<destw;xx++){
sx=(long)floor(((xx+xmin-x)*fx));
if (bAlpha) a=pAlpha[yoffset+sx]; else a=255;
a =(BYTE)((a*(1+info.nAlphaMax))>>8);
if (head.biClrUsed){
c=GetPaletteColor(GetPixelIndex(sx,sy));
if (info.bAlphaPaletteEnabled){
a= (BYTE)((a*(1+c.rgbReserved))>>8);
}
} else {
ppix=info.pImage+sy*info.dwEffWidth+sx*3;
c.rgbBlue = *ppix++;
c.rgbGreen= *ppix++;
c.rgbRed = *ppix;
}
if (*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++){
yoffset=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[yoffset+ix]; else a=255;
a = (BYTE)((a*(1+info.nAlphaMax))>>8);
if (head.biClrUsed){
c=GetPaletteColor(GetPixelIndex(ix,iy));
if (info.bAlphaPaletteEnabled){
a= (BYTE)((a*(1+c.rgbReserved))>>8);
}
} else {
c.rgbBlue = *ppix++;
c.rgbGreen= *ppix++;
c.rgbRed = *ppix++;
}
if (*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;
}
////////////////////////////////////////////////////////////////////////////////
// Draws (stretch) the image with single transparency support
// > hdc: destination device context
// > x,y: offset
// > cx,cy: (optional) size.
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;
}
////////////////////////////////////////////////////////////////////////////////
// Stretch the image. Obsolete: use Draw() or Draw2()
long CxImage::Stretch(HDC hdc, long xoffset, long yoffset, long xsize, long ysize)
{
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,SRCCOPY);
return 1;
}
return 0;
}
////////////////////////////////////////////////////////////////////////////////
// Tiles the device context in the specified rectangle with the image.
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;
}
////////////////////////////////////////////////////////////////////////////////
long CxImage::DrawText(HDC hdc, long x, long y, const char* text, RGBQUAD color, const char* font, long lSize, long lWeight, BYTE bItalic, BYTE bUnderline)
{
if (IsValid()){
//get the background
HDC pDC;
if (hdc) pDC=hdc; else pDC = ::GetDC(0);
HDC TmpDC=CreateCompatibleDC(pDC);
//choose the font
HFONT m_Font;
LOGFONT* m_pLF;
m_pLF=(LOGFONT*)calloc(1,sizeof(LOGFONT));
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 = strlen(text);
::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(pDC,&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);
}
}
//cleanup
if (pOldFont) SelectObject(TmpDC,pOldFont);
DeleteObject(m_Font);
free(m_pLF);
DeleteObject(SelectObject(TmpDC,TmpObj));
DeleteDC(TmpDC);
}
return 1;
}
////////////////////////////////////////////////////////////////////////////////
#endif //CXIMAGE_SUPPORT_WINDOWS
////////////////////////////////////////////////////////////////////////////////