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ximawnd.cpp
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ximawnd.cpp
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// xImaWnd.cpp : Windows functions
/* 07/08/2001 v1.00 - Davide Pizzolato - www.xdp.it
* CxImage version 7.0.1 07/Jan/2011
*/
#include "ximage.h"
#include "ximaiter.h"
#include "ximabmp.h"
////////////////////////////////////////////////////////////////////////////////
#if defined (_WIN32_WCE)
#ifndef DEFAULT_GUI_FONT
#define DEFAULT_GUI_FONT 17
#endif
#ifndef PROOF_QUALITY
#define PROOF_QUALITY 2
#endif
struct DIBINFO : public BITMAPINFO
{
RGBQUAD arColors[255]; // Color table info - adds an extra 255 entries to palette
operator LPBITMAPINFO() { return (LPBITMAPINFO) this; }
operator LPBITMAPINFOHEADER() { return &bmiHeader; }
RGBQUAD* ColorTable() { return bmiColors; }
};
int32_t BytesPerLine(int32_t nWidth, int32_t nBitsPerPixel)
{
return ( (nWidth * nBitsPerPixel + 31) & (~31) ) / 8;
}
int32_t NumColorEntries(int32_t nBitsPerPixel, int32_t nCompression, uint32_t biClrUsed)
{
int32_t nColors = 0;
switch (nBitsPerPixel)
{
case 1:
nColors = 2; break;
case 2:
nColors = 4; break; // winCE only
case 4:
nColors = 16; break;
case 8:
nColors =256; break;
case 24:
nColors = 0; break;
case 16:
case 32:
nColors = 3; break; // I've found that PocketPCs need this regardless of BI_RGB or BI_BITFIELDS
default:
ASSERT(FALSE);
}
// If biClrUsed is provided, and it is a legal value, use it
if (biClrUsed > 0 && biClrUsed <= (uint32_t)nColors)
return biClrUsed;
return nColors;
}
int32_t GetDIBits(
HDC hdc, // handle to DC
HBITMAP hbmp, // handle to bitmap
uint32_t uStartScan, // first scan line to set
uint32_t cScanLines, // number of scan lines to copy
LPVOID lpvBits, // array for bitmap bits
LPBITMAPINFO lpbi, // bitmap data buffer
uint32_t uUsage // RGB or palette index
)
{
uint32_t iColorTableSize = 0;
if (!hbmp)
return 0;
// Get dimensions of bitmap
BITMAP bm;
if (!::GetObject(hbmp, sizeof(bm),(LPVOID)&bm))
return 0;
//3. Creating new bitmap and receive pointer to it's bits.
HBITMAP hTargetBitmap;
void *pBuffer;
//3.1 Initilize DIBINFO structure
DIBINFO dibInfo;
dibInfo.bmiHeader.biBitCount = 24;
dibInfo.bmiHeader.biClrImportant = 0;
dibInfo.bmiHeader.biClrUsed = 0;
dibInfo.bmiHeader.biCompression = 0;
dibInfo.bmiHeader.biHeight = bm.bmHeight;
dibInfo.bmiHeader.biPlanes = 1;
dibInfo.bmiHeader.biSize = 40;
dibInfo.bmiHeader.biSizeImage = bm.bmHeight*BytesPerLine(bm.bmWidth,24);
dibInfo.bmiHeader.biWidth = bm.bmWidth;
dibInfo.bmiHeader.biXPelsPerMeter = 3780;
dibInfo.bmiHeader.biYPelsPerMeter = 3780;
dibInfo.bmiColors[0].rgbBlue = 0;
dibInfo.bmiColors[0].rgbGreen = 0;
dibInfo.bmiColors[0].rgbRed = 0;
dibInfo.bmiColors[0].rgbReserved = 0;
//3.2 Create bitmap and receive pointer to points into pBuffer
HDC hDC = ::GetDC(NULL);
ASSERT(hDC);
hTargetBitmap = CreateDIBSection(
hDC,
(const BITMAPINFO*)dibInfo,
DIB_RGB_COLORS,
(void**)&pBuffer,
NULL,
0);
::ReleaseDC(NULL, hDC);
//4. Copy source bitmap into the target bitmap.
//4.1 Create 2 device contexts
HDC memDc = CreateCompatibleDC(NULL);
if (!memDc) {
ASSERT(FALSE);
}
HDC targetDc = CreateCompatibleDC(NULL);
if (!targetDc) {
ASSERT(FALSE);
}
//4.2 Select source bitmap into one DC, target into another
HBITMAP hOldBitmap1 = (HBITMAP)::SelectObject(memDc, hbmp);
HBITMAP hOldBitmap2 = (HBITMAP)::SelectObject(targetDc, hTargetBitmap);
//4.3 Copy source bitmap into the target one
BitBlt(targetDc, 0, 0, bm.bmWidth, bm.bmHeight, memDc, 0, 0, SRCCOPY);
//4.4 Restore device contexts
::SelectObject(memDc, hOldBitmap1);
::SelectObject(targetDc, hOldBitmap2);
DeleteDC(memDc);
DeleteDC(targetDc);
//Here we can bitmap bits: pBuffer. Note:
// 1. pBuffer contains 3 bytes per point
// 2. Lines ane from the bottom to the top!
// 3. Points in the line are from the left to the right
// 4. Bytes in one point are BGR (blue, green, red) not RGB
// 5. Don't delete pBuffer, it will be automatically deleted
// when delete hTargetBitmap
lpvBits = pBuffer;
DeleteObject(hbmp);
//DeleteObject(hTargetBitmap);
return 1;
}
#endif
////////////////////////////////////////////////////////////////////////////////
#if CXIMAGE_SUPPORT_WINDOWS
////////////////////////////////////////////////////////////////////////////////
int32_t CxImage::Blt(HDC pDC, int32_t x, int32_t y)
{
if((pDib==0)||(pDC==0)||(!info.bEnabled)) return 0;
HBRUSH brImage = CreateDIBPatternBrushPt(pDib, DIB_RGB_COLORS);
POINT pt;
SetBrushOrgEx(pDC,x,y,&pt); //<RT>
HBRUSH brOld = (HBRUSH) SelectObject(pDC, brImage);
PatBlt(pDC, x, y, head.biWidth, head.biHeight, PATCOPY);
SelectObject(pDC, brOld);
SetBrushOrgEx(pDC,pt.x,pt.y,NULL);
DeleteObject(brImage);
return 1;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Transfer the image in a global bitmap handle (clipboard copy)
*/
HANDLE CxImage::CopyToHandle()
{
HANDLE hMem=NULL;
if (pDib){
hMem= GlobalAlloc(GHND, GetSize());
if (hMem){
uint8_t* pDst=(uint8_t*)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;
uint32_t dwSize = GlobalSize(hMem);
if (!dwSize) return false;
uint8_t *lpVoid; //pointer to the bitmap
lpVoid = (uint8_t *)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));
//check if it's a top-down bitmap
bool bTopDownDib = head.biHeight<0;
if (bTopDownDib) head.biHeight=-head.biHeight;
//create the image
if(!Create(head.biWidth,head.biHeight,head.biBitCount)){
GlobalUnlock(hMem);
return false;
}
//preserve DPI
SetXDPI((int32_t)floor(head.biXPelsPerMeter * 254.0 / 10000.0 + 0.5));
SetYDPI((int32_t)floor(head.biYPelsPerMeter * 254.0 / 10000.0 + 0.5));
/*//copy the pixels (old way)
if((pHead->biCompression != BI_RGB) || (pHead->biBitCount == 32)){ //<Jörgen Alfredsson>
// BITFIELD case
// set the internal header in the dib
memcpy(pDib,&head,sizeof(head));
// get the bitfield masks
uint32_t bf[3];
memcpy(bf,lpVoid+pHead->biSize,12);
// transform into RGB
Bitfield2RGB(lpVoid+pHead->biSize+12,bf[0],bf[1],bf[2],(uint8_t)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
int32_t nColors = DibNumColors(pHead);
if (bIsOldBmp) {
/* get pointer to BITMAPCOREINFO (old style 1.x) */
LPBITMAPCOREINFO lpbmc = (LPBITMAPCOREINFO)lpVoid;
for (int32_t 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 = (uint8_t)0;
}
} else {
/* get pointer to BITMAPINFO (new style 3.x) */
LPBITMAPINFO lpbmi = (LPBITMAPINFO)lpVoid;
for (int32_t 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 = (uint8_t)0;
}
}
}
// <Michael Gandyra>
uint32_t dwCompression = pHead->biCompression;
// compressed bitmap ?
if(dwCompression!=BI_RGB || pHead->biBitCount==32 || pHead->biBitCount ==16) {
// get the bitmap bits
LPSTR lpDIBBits = (LPSTR)((uint8_t*)pHead + *(uint32_t*)pHead + (uint16_t)(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
uint32_t bf[3];
memcpy(bf,lpVoid+pHead->biSize,12);
// transform into RGB
Bitfield2RGB(lpVoid+pHead->biSize+12,bf[0],bf[1],bf[2],(uint8_t)pHead->biBitCount);
} else {
// "unknown compression";
GlobalUnlock(hMem);
return false;
}
}
break;
case 16 :
{
// get the bitfield masks
int32_t offset=0;
uint32_t 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, bf[0], bf[1], bf[2], 16);
}
break;
case 8 :
case 4 :
case 1 :
{
switch (dwCompression) {
case BI_RLE4:
{
uint8_t status_byte = 0;
uint8_t second_byte = 0;
int32_t scanline = 0;
int32_t 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
uint8_t delta_x;
uint8_t delta_y;
delta_x = *(lpDIBBits++);
delta_y = *(lpDIBBits++);
// apply them
bits += delta_x / 2;
scanline += delta_y;
break;
}
default :
second_byte = *(lpDIBBits++);
uint8_t* sline = iter.GetRow(scanline);
for (int32_t i = 0; i < status_byte; i++) {
if ((uint8_t*)(sline+bits) < (uint8_t*)(info.pImage+head.biSizeImage)){
if (low_nibble) {
if (i&1)
*(sline + bits) |= (second_byte & 0x0f);
else
*(sline + bits) |= (second_byte & 0xf0)>>4;
bits++;
} else {
if (i&1)
*(sline + bits) = (uint8_t)(second_byte & 0x0f)<<4;
else
*(sline + bits) = (uint8_t)(second_byte & 0xf0);
}
}
if ((i & 1) && (i != (status_byte - 1)))
second_byte = *(lpDIBBits++);
low_nibble = !low_nibble;
}
if ((((status_byte+1) >> 1) & 1 ) == 1)
second_byte = *(lpDIBBits++);
break;
};
break;
default :
{
uint8_t* sline = iter.GetRow(scanline);
second_byte = *(lpDIBBits++);
for (unsigned i = 0; i < status_byte; i++) {
if ((uint8_t*)(sline+bits) < (uint8_t*)(info.pImage+head.biSizeImage)){
if (low_nibble) {
if (i&1)
*(sline + bits) |= (second_byte & 0x0f);
else
*(sline + bits) |= (second_byte & 0xf0)>>4;
bits++;
} else {
if (i&1)
*(sline + bits) = (uint8_t)(second_byte & 0x0f)<<4;
else
*(sline + bits) = (uint8_t)(second_byte & 0xf0);
}
}
low_nibble = !low_nibble;
}
}
break;
};
}
}
break;
case BI_RLE8 :
{
uint8_t status_byte = 0;
uint8_t second_byte = 0;
int32_t scanline = 0;
int32_t 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
uint8_t delta_x;
uint8_t delta_y;
delta_x = *(lpDIBBits++);
delta_y = *(lpDIBBits++);
// apply them
bits += delta_x;
scanline += delta_y;
}
break;
default :
int32_t nNumBytes = sizeof(uint8_t) * 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 {
uint8_t *sline = iter.GetRow(scanline);
second_byte = *(lpDIBBits++);
for (unsigned i = 0; i < status_byte; i++) {
if ((uint8_t*)(sline+bits) < (uint8_t*)(info.pImage+head.biSizeImage)){
*(sline + bits) = second_byte;
bits++;
} else {
bContinue = FALSE; //don't delete: we are in memory, it is not as with files
break;
}
}
}
}
}
break;
default :
{
// "compression type not supported";
GlobalUnlock(hMem);
return false;
}
}
}
}
} else {
//normal bitmap (not compressed)
memcpy(pDib,lpVoid,GetSize());
}
GlobalUnlock(hMem);
if (bTopDownDib) Flip();
return true;
}
return false;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Transfer the image in a icon handle, with transparency.
* \param hdc: target device context (the screen, usually)
* \param bTransparency : (optional) exports trancparency
* \return icon handle, or NULL if an error occurs.
* \sa MakeBitmap
* \author [brunom]
*/
HICON CxImage::MakeIcon(HDC hdc, bool bTransparency)
{
HICON hDestIcon = 0;
ICONINFO csDest;
csDest.fIcon = TRUE;
csDest.xHotspot = 0;
csDest.yHotspot = 0;
// Assign HBITMAP with Transparency to ICON Info structure
csDest.hbmColor = MakeBitmap( hdc, bTransparency );
// Create Mask just in case we need a Mask for the Icons
CxImage a_Mask;
GetTransparentMask(&a_Mask);
// Assign Mask
csDest.hbmMask = a_Mask.MakeBitmap();
// Create Icon
hDestIcon = ::CreateIconIndirect(&csDest);
return hDestIcon;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Transfer the image in a bitmap handle
* \param hdc: target device context (the screen, usually)
* \param bTransparency : (optional) exports trancparency
* \return bitmap handle, or NULL if an error occurs.
* \sa Draw2HBITMAP, MakeIcon
* \author []; changes [brunom]
*/
HBITMAP CxImage::MakeBitmap(HDC hdc, bool bTransparency)
{
if (!pDib)
return NULL;
// Create HBITMAP with Trancparency
if( (pAlpha!=0) && bTransparency )
{
HDC hMemDC;
if (hdc)
hMemDC = hdc;
else
hMemDC = CreateCompatibleDC(NULL);
BITMAPINFO bi;
// Fill in the BITMAPINFOHEADER
bi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bi.bmiHeader.biWidth = GetWidth();
bi.bmiHeader.biHeight = GetHeight();
bi.bmiHeader.biPlanes = 1;
bi.bmiHeader.biBitCount = 32;
bi.bmiHeader.biCompression = BI_RGB;
bi.bmiHeader.biSizeImage = 4 * GetWidth() * GetHeight();
bi.bmiHeader.biXPelsPerMeter = 0;
bi.bmiHeader.biYPelsPerMeter = 0;
bi.bmiHeader.biClrUsed = 0;
bi.bmiHeader.biClrImportant = 0;
COLORREF* pCrBits = NULL;
HBITMAP hbmp = CreateDIBSection (
hMemDC, &bi, DIB_RGB_COLORS, (void **)&pCrBits,
NULL, NULL);
if (!hdc)
DeleteDC(hMemDC);
DIBSECTION ds;
if (::GetObject (hbmp, sizeof (DIBSECTION), &ds) == 0)
{
return 0;
}
// transfer Pixels from CxImage to Bitmap
RGBQUAD* pBit = (RGBQUAD*) ds.dsBm.bmBits;
int32_t lPx,lPy;
for( lPy=0 ; lPy < bi.bmiHeader.biHeight ; ++lPy )
{
for( lPx=0 ; lPx < bi.bmiHeader.biWidth ; ++lPx )
{
RGBQUAD lPixel = GetPixelColor(lPx,lPy,true);
*pBit = lPixel;
pBit++;
}
}
return hbmp;
}
// Create HBITMAP without Trancparency
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);
// this alternative works also with _WIN32_WCE
LPVOID pBit32;
HBITMAP bmp = CreateDIBSection(hdc, (LPBITMAPINFO)pDib, DIB_RGB_COLORS, &pBit32, NULL, 0);
if (pBit32) memcpy(pBit32, GetBits(), head.biSizeImage);
return bmp;
}
////////////////////////////////////////////////////////////////////////////////
/**
* check if the bitmap contains transparency data
* \param hbmp : bitmap resource handle
* \return true the bitmap has transparency
* \author [brunom]
*/
bool CxImage::IsHBITMAPAlphaValid( HBITMAP hbmp )
{
bool lbAlphaValid = false;
if (hbmp)
{
BITMAP bm;
// get informations about the bitmap
GetObject(hbmp, sizeof(BITMAP), (LPSTR) &bm);
// for alpha there must bee 32 Bit's per Pixel ??
if( bm.bmBitsPixel == 32 )
{
BITMAPINFO l_BitmapInfo;
l_BitmapInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
l_BitmapInfo.bmiHeader.biWidth = bm.bmWidth;
l_BitmapInfo.bmiHeader.biHeight = bm.bmHeight;
l_BitmapInfo.bmiHeader.biPlanes = bm.bmPlanes;
l_BitmapInfo.bmiHeader.biBitCount = bm.bmBitsPixel;
l_BitmapInfo.bmiHeader.biCompression = BI_RGB;
// create Buffer for Image
RGBQUAD * l_pRawBytes = new RGBQUAD[bm.bmWidth * bm.bmHeight];
HDC dc = ::GetDC(NULL);
if(dc)
{
// Get Pixel Data from Image
if(GetDIBits(dc, hbmp, 0, bm.bmHeight, l_pRawBytes, &l_BitmapInfo, DIB_RGB_COLORS))
{
RGBQUAD * lpArray = l_pRawBytes;
RGBQUAD * lpArrayEnd = l_pRawBytes + (bm.bmWidth * bm.bmHeight);
// check if Alpha Channel is realy valid (anny value not zero)
for( ;lpArray != lpArrayEnd ; ++lpArray )
{
// any alpha value not zero
if( lpArray->rgbReserved != 0 )
{
// must be vaid alph channel
lbAlphaValid = true;
break;
}
}
}
::ReleaseDC(NULL, dc);
}
// free temporary Memory
delete [] l_pRawBytes;
}
}
return lbAlphaValid;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Bitmap resource constructor
* \param hbmp : bitmap resource handle
* \param hpal : (optional) palette, useful for 8bpp DC
* \param bTransparency : (optional) for 32bpp images only, imports trancparency
* \return true if everything is ok
* \author []; changes [brunom]
*/
bool CxImage::CreateFromHBITMAP(HBITMAP hbmp, HPALETTE hpal, bool bTransparency)
{
if (!Destroy())
return false;
if (hbmp) {
BITMAP bm;
// get informations about the bitmap
GetObject(hbmp, sizeof(BITMAP), (LPSTR) &bm);
// Transparency in HBITMAP
if(bTransparency && IsHBITMAPAlphaValid(hbmp))
{
bool l_bResult = true;
BITMAPINFO l_BitmapInfo;
l_BitmapInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
l_BitmapInfo.bmiHeader.biWidth = bm.bmWidth;
l_BitmapInfo.bmiHeader.biHeight = bm.bmHeight;
l_BitmapInfo.bmiHeader.biPlanes = bm.bmPlanes;
l_BitmapInfo.bmiHeader.biBitCount = bm.bmBitsPixel;
l_BitmapInfo.bmiHeader.biCompression = BI_RGB;
RGBQUAD *l_pRawBytes = new RGBQUAD[bm.bmWidth * bm.bmHeight];
HDC dc = ::GetDC(NULL);
if(dc)
{
if(GetDIBits(dc, hbmp, 0, bm.bmHeight, l_pRawBytes, &l_BitmapInfo, DIB_RGB_COLORS))
l_bResult = CreateFromArray((uint8_t*)l_pRawBytes, bm.bmWidth, bm.bmHeight, bm.bmBitsPixel, bm.bmWidthBytes, false);
else
l_bResult = false;
::ReleaseDC(NULL, dc);
}
else
l_bResult = false;
delete [] l_pRawBytes;
return l_bResult;
}
else
{
// 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
* \param bTransparency : (optional) for 32bpp images only, imports trancparency
* \return true if everything is ok
* \author []; changes [Arlen Albert Keshabian], [brunom]
*/
#if !defined (_WIN32_WCE)
bool CxImage::CreateFromHICON(HICON hico, bool bTransparency)
{
if (!Destroy() || !hico)
return false;
bool l_bResult = true;
ICONINFO iinfo;
GetIconInfo(hico,&iinfo);
//BITMAP l_Bitmap;
//GetObject(iinfo.hbmColor, sizeof(BITMAP), &l_Bitmap);
l_bResult = CreateFromHBITMAP( iinfo.hbmColor, NULL, bTransparency );
#if CXIMAGE_SUPPORT_ALPHA
if(l_bResult && ((!IsHBITMAPAlphaValid(iinfo.hbmColor)) || (!bTransparency)) )
{
CxImage mask;
mask.CreateFromHBITMAP(iinfo.hbmMask);
mask.GrayScale();
mask.Negative();
AlphaSet(mask);
}
#endif
DeleteObject(iinfo.hbmColor); //<Sims>
DeleteObject(iinfo.hbmMask); //<Sims>
return l_bResult;
}
#endif //_WIN32_WCE
////////////////////////////////////////////////////////////////////////////////
int32_t CxImage::Draw(HDC hdc, const RECT& rect, RECT* pClipRect, bool bSmooth, bool bFlipY)
{
return Draw(hdc, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, pClipRect,bSmooth, bFlipY);
}
////////////////////////////////////////////////////////////////////////////////
/**
* 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.
* \param bFlipY : draws a mirror image along the y-axis
* \return true if everything is ok
*/
int32_t CxImage::Draw(HDC hdc, int32_t x, int32_t y, int32_t cx, int32_t cy, RECT* pClipRect, bool bSmooth, bool bFlipY)
{
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 >= 0;
bool bAlpha = pAlpha != 0;
//required for MM_ANISOTROPIC, MM_HIENGLISH, and similar modes [Greg Peatfield]
int32_t hdc_Restore = ::SaveDC(hdc);
if (!hdc_Restore)
return 0;
#if !defined (_WIN32_WCE)
RECT mainbox; // (experimental)
if (pClipRect){
GetClipBox(hdc,&mainbox);
HRGN rgn = CreateRectRgnIndirect(pClipRect);
ExtSelectClipRgn(hdc,rgn,RGN_AND);
DeleteObject(rgn);
}
#endif
//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));
int32_t destw = paintbox.right - paintbox.left;
int32_t desth = paintbox.bottom - paintbox.top;
if (!(bTransparent || bAlpha || info.bAlphaPaletteEnabled)){
if (cx==head.biWidth && cy==head.biHeight){ //NORMAL
#if !defined (_WIN32_WCE)
SetStretchBltMode(hdc,COLORONCOLOR);
#endif
if (bFlipY){
StretchDIBits(hdc, x, y+cy-1,
cx, -cy, 0, 0, cx, cy,
info.pImage,(BITMAPINFO*)pDib,DIB_RGB_COLORS,SRCCOPY);
} else {
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;
uint8_t *pbase; //points to the final dib
uint8_t *pdst; //current pixel from pbase
uint8_t *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){
int32_t xx,yy;
int32_t sx,sy;
float dx,dy;
uint8_t *psrc;
int32_t ew = ((((24 * destw) + 31) / 32) * 4);
int32_t ymax = paintbox.bottom;
int32_t 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,(int32_t)floor(dy));
psrc = info.pImage+sy*info.dwEffWidth;
if (bFlipY){
pdst = pbase+(desth-1-yy)*ew;
} else {
pdst = pbase+yy*ew;
}
for(xx=0;xx<destw;xx++){
dx = (xx+xmin-x)*fx;
sx = max(0L,(int32_t)floor(dx));
#if CXIMAGE_SUPPORT_INTERPOLATION
if (bSmooth){
if (fx > 1 && fy > 1) {
c = GetAreaColorInterpolated(dx - 0.5f, dy - 0.5f, fx, fy, CxImage::IM_BILINEAR, CxImage::OM_REPEAT);
} else {
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();
int32_t* pc = (int32_t*)&c;
int32_t* pct= (int32_t*)&ct;
int32_t cit = GetTransIndex();
int32_t ci = 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;
uint8_t *pbase; //points to the final dib
uint8_t *pdst; //current pixel from pbase
uint8_t *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){
int32_t xx,yy,alphaoffset,ix,iy;
uint8_t a,a1,*psrc;
int32_t ew = ((((24 * destw) + 31) / 32) * 4);
int32_t ymax = paintbox.bottom;
int32_t 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;
int32_t sx,sy;
for(yy=0;yy<desth;yy++){
dy = head.biHeight-(ymax-yy-y)*fy;
sy = max(0L,(int32_t)floor(dy));
alphaoffset = sy*head.biWidth;
if (bFlipY){
pdst = pbase+(desth-1-yy)*ew;
} else {
pdst = pbase + yy*ew;
}
psrc = info.pImage + sy*info.dwEffWidth;
for(xx=0;xx<destw;xx++){