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[OS/2] Bug 411332: fix icon handler to work with cairo and add icon logic using RWS, code by Rich Walsh, p=me, r=me/mkaply

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mozilla@weilbacher.org 2008-01-22 12:08:43 -08:00
parent 88b2bdc6f7
commit d63fc3957a
2 changed files with 204 additions and 248 deletions
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1
modules/libpr0n/decoders/icon/os2/Makefile.in
View File

@ -51,6 +51,7 @@ REQUIRES = xpcom \
necko \ necko \
mimetype \ mimetype \
exthandler \ exthandler \
widget \
$(NULL) $(NULL)
CPPSRCS = nsIconChannel.cpp CPPSRCS = nsIconChannel.cpp

451
modules/libpr0n/decoders/icon/os2/nsIconChannel.cpp
View File

@ -1,6 +1,6 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
* /* vim: set sw=2 sts=2 et cin: */
* ***** BEGIN LICENSE BLOCK ***** /* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
* *
* The contents of this file are subject to the Mozilla Public License Version * The contents of this file are subject to the Mozilla Public License Version
@ -48,9 +48,10 @@
#include "nsMemory.h" #include "nsMemory.h"
#include "nsNetUtil.h" #include "nsNetUtil.h"
#include "nsInt64.h" #include "nsInt64.h"
#include "nsIFile.h" #include "nsILocalFile.h"
#include "nsIFileURL.h" #include "nsIFileURL.h"
#include "nsDirectoryServiceDefs.h" #include "nsDirectoryServiceDefs.h"
#include "nsIRwsService.h"
#define INCL_PM #define INCL_PM
#include <os2.h> #include <os2.h>
@ -68,12 +69,24 @@
#define UNALIGNEDBPR(cx,bits) (( ((cx)*(bits)) + 7) / 8) #define UNALIGNEDBPR(cx,bits) (( ((cx)*(bits)) + 7) / 8)
// native icon functions // native icon functions
HPOINTER GetFileIcon(nsCString& file, PRBool fExists); static HPOINTER GetIcon(nsCString& file, PRBool fExists,
PRBool fMini, PRBool *fWpsIcon);
static void DestroyIcon(HPOINTER hIcon, PRBool fWpsIcon);
void ConvertColorBitMap(PRUint8* inBuf, PBITMAPINFO2 pBMInfo, PRUint8* outBuf); void ConvertColorBitMap(PRUint8 *inBuf, PBITMAPINFO2 pBMInfo,
void ShrinkColorBitMap(PRUint8* inBuf, PBITMAPINFO2 pBMInfo, PRUint8* outBuf); PRUint8 *outBuf, PRBool fShrink);
void ConvertMaskBitMap(PRUint8* inBuf, PBITMAPINFO2 pBMInfo, PRUint8* outBuf); void ConvertMaskBitMap(PRUint8 *inBuf, PBITMAPINFO2 pBMInfo,
void ShrinkMaskBitMap(PRUint8* inBuf, PBITMAPINFO2 pBMInfo, PRUint8* outBuf); PRUint8 *outBuf, PRBool fShrink);
//------------------------------------------------------------------------
// reduces overhead by preventing calls to nsRws when it isn't present
#ifdef MOZ_PHOENIX // should work fine in Firefox
static PRBool sUseRws = PR_TRUE;
#else // XXX causes duplicate attachment icons and crashes in apps that
// use mailnews, so off now for other apps
static PRBool sUseRws = PR_FALSE;
#endif
//------------------------------------------------------------------------ //------------------------------------------------------------------------
// nsIconChannel methods // nsIconChannel methods
@ -237,26 +250,23 @@ nsresult nsIconChannel::ExtractIconInfoFromUrl(nsIFile ** aLocalFile, PRUint32 *
//------------------------------------------------------------------------ //------------------------------------------------------------------------
// retrieves a native icon with 16, 256, or 16M colors and converts it // retrieves a native icon with 16, 256, or 16M colors and converts it to cairo
// to 24-bit BGR with 1-bit alpha data (BGR_A1 format); Note: this // format; Note: this implementation ignores the file's MIME-type because
// implementation ignores the file's MIME-type because using it virtually // using it virtually guarantees we'll end up with an inappropriate icon (i.e.
// guarantees we'll end up with an inappropriate icon (i.e. an .exe icon) // an .exe icon)
nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, PRBool nonBlocking) nsresult nsIconChannel::MakeInputStream(nsIInputStream **_retval,
PRBool nonBlocking)
{ {
#ifdef MOZ_CAIRO_GFX
// This needs to be changed to match the format changes described in
// nsIconDecoder.h. For cairo, the icon format is ARGB (A in highest
// bits, B in lowest bits, based on platform endianness).
return NS_ERROR_NOT_IMPLEMENTED;
#endif
// get some details about this icon // get some details about this icon
nsCOMPtr<nsIFile> localFile; nsCOMPtr<nsIFile> localFile;
PRUint32 desiredImageSize; PRUint32 desiredImageSize;
nsXPIDLCString contentType; nsXPIDLCString contentType;
nsCAutoString filePath; nsCAutoString filePath;
nsresult rv = ExtractIconInfoFromUrl(getter_AddRefs(localFile), &desiredImageSize, contentType, filePath); nsresult rv = ExtractIconInfoFromUrl(getter_AddRefs(localFile),
&desiredImageSize, contentType,
filePath);
NS_ENSURE_SUCCESS(rv, rv); NS_ENSURE_SUCCESS(rv, rv);
// if the file exists, get its path // if the file exists, get its path
@ -266,15 +276,17 @@ nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, PRBool nonBloc
localFile->Exists(&fileExists); localFile->Exists(&fileExists);
} }
// get the icon from the file // get the file's icon from either the WPS or PM
HPOINTER hIcon = GetFileIcon(filePath, fileExists); PRBool fWpsIcon = PR_FALSE;
HPOINTER hIcon = GetIcon(filePath, fileExists,
desiredImageSize <= 16, &fWpsIcon);
if (hIcon == NULLHANDLE) if (hIcon == NULLHANDLE)
return NS_ERROR_FAILURE; return NS_ERROR_FAILURE;
// get the color & mask bitmaps used by the icon // get the color & mask bitmaps used by the icon
POINTERINFO IconInfo; POINTERINFO IconInfo;
if (!WinQueryPointerInfo(hIcon, &IconInfo)) { if (!WinQueryPointerInfo(hIcon, &IconInfo)) {
WinFreeFileIcon( hIcon); DestroyIcon(hIcon, fWpsIcon);
return NS_ERROR_FAILURE; return NS_ERROR_FAILURE;
} }
@ -285,9 +297,9 @@ nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, PRBool nonBloc
if (IconInfo.hbmMiniPointer) { if (IconInfo.hbmMiniPointer) {
IconInfo.hbmColor = IconInfo.hbmMiniColor; IconInfo.hbmColor = IconInfo.hbmMiniColor;
IconInfo.hbmPointer = IconInfo.hbmMiniPointer; IconInfo.hbmPointer = IconInfo.hbmMiniPointer;
} } else {
else
fShrink = TRUE; fShrink = TRUE;
}
} }
// various resources to be allocated // various resources to be allocated
@ -297,12 +309,12 @@ nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, PRBool nonBloc
HDC hdc = 0; HDC hdc = 0;
HPS hps = 0; HPS hps = 0;
// using this dummy do{...}while(0) "loop" guarantees resources will // using this dummy do{...}while(0) "loop" guarantees that resources will
// be deallocated, eliminates the need for nesting, and generally makes // be deallocated, but eliminates the need for nesting, and generally makes
// testing for & dealing with errors pretty painless (just 'break') // testing for & dealing with errors pretty painless (just 'break')
do { do {
rv = NS_ERROR_FAILURE; rv = NS_ERROR_FAILURE;
// get the details for the color bitmap; if there isn't one // get the details for the color bitmap; if there isn't one
// or this is 1-bit color, exit // or this is 1-bit color, exit
BITMAPINFOHEADER2 BMHeader; BITMAPINFOHEADER2 BMHeader;
@ -311,98 +323,90 @@ nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, PRBool nonBloc
!GpiQueryBitmapInfoHeader(IconInfo.hbmColor, &BMHeader) || !GpiQueryBitmapInfoHeader(IconInfo.hbmColor, &BMHeader) ||
BMHeader.cBitCount == 1) BMHeader.cBitCount == 1)
break; break;
// alloc space for the color bitmap's info, including its color table // alloc space for the color bitmap's info, including its color table
PRUint32 cbBMInfo = sizeof(BITMAPINFO2) + (sizeof(RGB2) * 255); PRUint32 cbBMInfo = sizeof(BITMAPINFO2) + (sizeof(RGB2) * 255);
pBMInfo = (PBITMAPINFO2)nsMemory::Alloc(cbBMInfo); pBMInfo = (PBITMAPINFO2)nsMemory::Alloc(cbBMInfo);
if (!pBMInfo) if (!pBMInfo)
break; break;
// alloc space for the color bitmap data // alloc space for the color bitmap data
PRUint32 cbInRow = ALIGNEDBPR( BMHeader.cx, BMHeader.cBitCount); PRUint32 cbInRow = ALIGNEDBPR(BMHeader.cx, BMHeader.cBitCount);
PRUint32 cbInBuf = cbInRow * BMHeader.cy; PRUint32 cbInBuf = cbInRow * BMHeader.cy;
pInBuf = (PRUint8*)nsMemory::Alloc(cbInBuf); pInBuf = (PRUint8*)nsMemory::Alloc(cbInBuf);
if (!pInBuf) if (!pInBuf)
break; break;
memset( pInBuf, 0, cbInBuf); memset(pInBuf, 0, cbInBuf);
// alloc space for the 24-bit BGR_A1 bitmap we're creating // alloc space for the BGRA32 bitmap we're creating
PRUint32 cxOut = (fShrink ? BMHeader.cx / 2 : BMHeader.cx); PRUint32 cxOut = fShrink ? BMHeader.cx / 2 : BMHeader.cx;
PRUint32 cyOut = (fShrink ? BMHeader.cy / 2 : BMHeader.cy); PRUint32 cyOut = fShrink ? BMHeader.cy / 2 : BMHeader.cy;
PRUint32 cbColor = ALIGNEDBPR( cxOut, 24) * cyOut; PRUint32 cbOutBuf = 2 + ALIGNEDBPR(cxOut, 32) * cyOut;
PRUint32 cbMask = ALIGNEDBPR( cxOut, 1) * cyOut;
PRUint32 cbOutBuf = 3 + cbColor + cbMask;
pOutBuf = (PRUint8*)nsMemory::Alloc(cbOutBuf); pOutBuf = (PRUint8*)nsMemory::Alloc(cbOutBuf);
if (!pOutBuf) if (!pOutBuf)
break; break;
memset( pOutBuf, 0, cbOutBuf); memset(pOutBuf, 0, cbOutBuf);
// create a DC and PS // create a DC and PS
DEVOPENSTRUC dop = {NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL}; DEVOPENSTRUC dop = {NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL};
hdc = DevOpenDC( (HAB)0, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&dop, NULLHANDLE); hdc = DevOpenDC((HAB)0, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&dop, NULLHANDLE);
if (!hdc) if (!hdc)
break; break;
SIZEL sizel = {0,0}; SIZEL sizel = {0,0};
hps = GpiCreatePS((HAB)0, hdc, &sizel, GPIA_ASSOC | PU_PELS | GPIT_MICRO); hps = GpiCreatePS((HAB)0, hdc, &sizel, GPIA_ASSOC | PU_PELS | GPIT_MICRO);
if (!hps) if (!hps)
break; break;
// get the color bits // get the color bits
memset( pBMInfo, 0, cbBMInfo); memset(pBMInfo, 0, cbBMInfo);
*((PBITMAPINFOHEADER2)pBMInfo ) = BMHeader; *((PBITMAPINFOHEADER2)pBMInfo) = BMHeader;
GpiSetBitmap(hps, IconInfo.hbmColor); GpiSetBitmap(hps, IconInfo.hbmColor);
if (GpiQueryBitmapBits( hps, 0L, (LONG)BMHeader.cy, if (GpiQueryBitmapBits(hps, 0L, (LONG)BMHeader.cy,
(BYTE*)pInBuf, pBMInfo) <= 0) (BYTE*)pInBuf, pBMInfo) <= 0)
break; break;
// The first 2 bytes are the width & height of the icon in pixels // The first 2 bytes are the width & height of the icon in pixels,
// the remaining bytes are BGRA32 (B in first byte, A in last)
PRUint8* outPtr = pOutBuf; PRUint8* outPtr = pOutBuf;
*outPtr++ = (PRUint8)cxOut; *outPtr++ = (PRUint8)cxOut;
*outPtr++ = (PRUint8)cyOut; *outPtr++ = (PRUint8)cyOut;
// then the number of bits of alpha per pixel
*outPtr++ = (PRUint8)1;
// convert the color bitmap // convert the color bitmap
pBMInfo->cbImage = cbInBuf; pBMInfo->cbImage = cbInBuf;
if (fShrink) ConvertColorBitMap(pInBuf, pBMInfo, outPtr, fShrink);
ShrinkColorBitMap( pInBuf, pBMInfo, outPtr);
else // now we need to tack on the alpha data, so jump back to the first
ConvertColorBitMap( pInBuf, pBMInfo, outPtr); // pixel in the output buffer
outPtr += cbColor; outPtr = pOutBuf+2;
// now we need to tack on the alpha data
// Get the mask info // Get the mask info
BMHeader.cbFix = sizeof(BMHeader); BMHeader.cbFix = sizeof(BMHeader);
if (!GpiQueryBitmapInfoHeader(IconInfo.hbmPointer, &BMHeader)) if (!GpiQueryBitmapInfoHeader(IconInfo.hbmPointer, &BMHeader))
break; break;
// if the existing input buffer isn't large enough, reallocate it // if the existing input buffer isn't large enough, reallocate it
cbInRow = ALIGNEDBPR( BMHeader.cx, BMHeader.cBitCount); cbInRow = ALIGNEDBPR(BMHeader.cx, BMHeader.cBitCount);
if ((cbInRow * BMHeader.cy) > cbInBuf) // Need more for mask if ((cbInRow * BMHeader.cy) > cbInBuf) // Need more for mask
{ {
cbInBuf = cbInRow * BMHeader.cy; cbInBuf = cbInRow * BMHeader.cy;
nsMemory::Free(pInBuf); nsMemory::Free(pInBuf);
pInBuf = (PRUint8*)nsMemory::Alloc(cbInBuf); pInBuf = (PRUint8*)nsMemory::Alloc(cbInBuf);
memset( pInBuf, 0, cbInBuf); memset(pInBuf, 0, cbInBuf);
} }
// get the mask/alpha bits // get the mask/alpha bits
memset( pBMInfo, 0, cbBMInfo); memset(pBMInfo, 0, cbBMInfo);
*((PBITMAPINFOHEADER2)pBMInfo ) = BMHeader; *((PBITMAPINFOHEADER2)pBMInfo) = BMHeader;
GpiSetBitmap(hps, IconInfo.hbmPointer); GpiSetBitmap(hps, IconInfo.hbmPointer);
if (GpiQueryBitmapBits( hps, 0L, (LONG)BMHeader.cy, if (GpiQueryBitmapBits(hps, 0L, (LONG)BMHeader.cy,
(BYTE*)pInBuf, pBMInfo) <= 0) (BYTE*)pInBuf, pBMInfo) <= 0)
break; break;
// convert the mask/alpha bitmap // convert the mask/alpha bitmap
pBMInfo->cbImage = cbInBuf; pBMInfo->cbImage = cbInBuf;
if (fShrink) ConvertMaskBitMap(pInBuf, pBMInfo, outPtr, fShrink);
ShrinkMaskBitMap( pInBuf, pBMInfo, outPtr);
else
ConvertMaskBitMap( pInBuf, pBMInfo, outPtr);
// create a pipe // create a pipe
nsCOMPtr<nsIInputStream> inStream; nsCOMPtr<nsIInputStream> inStream;
nsCOMPtr<nsIOutputStream> outStream; nsCOMPtr<nsIOutputStream> outStream;
@ -410,26 +414,25 @@ nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, PRBool nonBloc
cbOutBuf, cbOutBuf, nonBlocking); cbOutBuf, cbOutBuf, nonBlocking);
if (NS_FAILED(rv)) if (NS_FAILED(rv))
break; break;
// put our data into the pipe // put our data into the pipe
PRUint32 written; PRUint32 written;
rv = outStream->Write( reinterpret_cast<const char*>(pOutBuf), rv = outStream->Write(reinterpret_cast<const char*>(pOutBuf),
cbOutBuf, &written); cbOutBuf, &written);
if (NS_FAILED(rv)) if (NS_FAILED(rv))
break; break;
// success! so addref the pipe // success! so addref the pipe
NS_ADDREF(*_retval = inStream); NS_ADDREF(*_retval = inStream);
} while (0); } while (0);
// free all the resources we allocated // free all the resources we allocated
if (pOutBuf) if (pOutBuf)
nsMemory::Free( pOutBuf); nsMemory::Free(pOutBuf);
if (pInBuf) if (pInBuf)
nsMemory::Free( pInBuf); nsMemory::Free(pInBuf);
if (pBMInfo) if (pBMInfo)
nsMemory::Free( pBMInfo); nsMemory::Free(pBMInfo);
if (hps) { if (hps) {
GpiAssociate(hps, NULLHANDLE); GpiAssociate(hps, NULLHANDLE);
GpiDestroyPS(hps); GpiDestroyPS(hps);
@ -437,42 +440,68 @@ nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, PRBool nonBloc
if (hdc) if (hdc)
DevCloseDC(hdc); DevCloseDC(hdc);
if (hIcon) if (hIcon)
WinFreeFileIcon( hIcon); DestroyIcon(hIcon, fWpsIcon);
return rv; return rv;
} }
//------------------------------------------------------------------------ //------------------------------------------------------------------------
// if the file exists, get its icon; if it doesn't, create a dummy file // get the file's icon from either the WPS or PM
// with the same extension, then use whatever icon the system assigns it
HPOINTER GetFileIcon(nsCString& file, PRBool fExists) static HPOINTER GetIcon(nsCString& file, PRBool fExists,
PRBool fMini, PRBool *fWpsIcon)
{ {
HPOINTER hRtn = 0;
*fWpsIcon = PR_FALSE;
if (fExists) if (file.IsEmpty())
return WinLoadFileIcon( file.get(), FALSE);
nsCOMPtr<nsIFile> dummyPath;
if (NS_FAILED(NS_GetSpecialDirectory(NS_OS_TEMP_DIR,
getter_AddRefs(dummyPath))))
return 0; return 0;
// if RWS is enabled, try to get the icon from the WPS
if (sUseRws) {
nsCOMPtr<nsIRwsService> rwsSvc(do_GetService("@mozilla.org/rwsos2;1"));
if (!rwsSvc)
sUseRws = PR_FALSE;
else {
if (fExists) {
rwsSvc->IconFromPath(file.get(), PR_FALSE, fMini, (PRUint32*)&hRtn);
} else {
const char *ptr = file.get();
if (*ptr == '.')
ptr++;
rwsSvc->IconFromExtension(ptr, fMini, (PRUint32*)&hRtn);
}
}
}
// if we got an icon from the WPS, set the flag & exit
if (hRtn) {
*fWpsIcon = PR_TRUE;
return hRtn;
}
// if the file exists already, get its icon
if (fExists)
return WinLoadFileIcon(file.get(), FALSE);
// otherwise, create a temporary file with the correct extension,
// then retrieve whatever icon PM assigns it
if (file.First() == '.') if (file.First() == '.')
file.Insert("moztmp", 0); file.Insert("moztmp", 0);
if (NS_FAILED(dummyPath->AppendNative(file))) nsCOMPtr<nsIFile> tempPath;
if (NS_FAILED(NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(tempPath))) ||
NS_FAILED(tempPath->AppendNative(file)))
return 0; return 0;
nsCAutoString dummyFile; nsCAutoString pathStr;
dummyPath->GetNativePath(dummyFile); tempPath->GetNativePath(pathStr);
FILE* fp = fopen(pathStr.get(), "wb+");
HPOINTER hRtn = 0;
FILE* fp = fopen( dummyFile.get(), "wb+");
if (fp) { if (fp) {
fclose( fp); fclose(fp);
hRtn = WinLoadFileIcon(dummyFile.get(), FALSE); hRtn = WinLoadFileIcon(pathStr.get(), FALSE);
remove(dummyFile.get()); remove(pathStr.get());
} }
return hRtn; return hRtn;
@ -480,177 +509,103 @@ HPOINTER GetFileIcon(nsCString& file, PRBool fExists)
//------------------------------------------------------------------------ //------------------------------------------------------------------------
// converts 16, 256, & 16M color bitmaps to 24-bit BGR format; since the static void DestroyIcon(HPOINTER hIcon, PRBool fWpsIcon)
// scanlines in OS/2 bitmaps run bottom-to-top, it starts at the end of the
// input buffer & works its way back; Note: no output padding is needed
// for any expected color-depth or size; only 4-bit, 20x20 icons contain
// input padding that has to be ignored
void ConvertColorBitMap(PRUint8* inBuf, PBITMAPINFO2 pBMInfo, PRUint8* outBuf)
{ {
if (fWpsIcon)
WinDestroyPointer(hIcon);
else
WinFreeFileIcon(hIcon);
PRUint32 bprIn = ALIGNEDBPR(pBMInfo->cx, pBMInfo->cBitCount); return;
PRUint8* pIn = inBuf + (pBMInfo->cy - 1) * bprIn; }
PRUint8* pOut = outBuf;
PRGB2 pColorTable = &pBMInfo->argbColor[0]; //------------------------------------------------------------------------
// converts 16, 256, & 16M color bitmaps to BGRA32 format; the alpha
// channel byte is left open & will be filled in by ConvertMaskBitMap();
// since the scanlines in OS/2 bitmaps run bottom-to-top, it starts at the
// end of the input buffer & works its way back; Note: only 4-bit, 20x20
// icons contain input padding that has to be ignored
void ConvertColorBitMap(PRUint8 *inBuf, PBITMAPINFO2 pBMInfo,
PRUint8 *outBuf, PRBool fShrink)
{
PRUint32 next = fShrink ? 2 : 1;
PRUint32 bprIn = ALIGNEDBPR(pBMInfo->cx, pBMInfo->cBitCount);
PRUint8 *pIn = inBuf + (pBMInfo->cy - 1) * bprIn;
PRUint8 *pOut = outBuf;
PRGB2 pColorTable = &pBMInfo->argbColor[0];
if (pBMInfo->cBitCount == 4) { if (pBMInfo->cBitCount == 4) {
PRUint32 ubprIn = UNALIGNEDBPR(pBMInfo->cx, pBMInfo->cBitCount); PRUint32 ubprIn = UNALIGNEDBPR(pBMInfo->cx, pBMInfo->cBitCount);
PRUint32 padIn = bprIn - ubprIn; PRUint32 padIn = bprIn - ubprIn;
for (PRUint32 row = pBMInfo->cy; row > 0; row--) { for (PRUint32 row = pBMInfo->cy; row > 0; row -= next) {
for (PRUint32 ndx = 0; ndx < ubprIn; ndx++, pIn++) { for (PRUint32 ndx = 0; ndx < ubprIn; ndx++, pIn++) {
pOut = 3 + (PRUint8*)memcpy( pOut, &pColorTable[FIRSTPEL(*pIn)], 3); pOut = 4 + (PRUint8*)memcpy(pOut, &pColorTable[FIRSTPEL(*pIn)], 3);
pOut = 3 + (PRUint8*)memcpy( pOut, &pColorTable[SECONDPEL(*pIn)], 3); if (!fShrink) {
pOut = 4 + (PRUint8*)memcpy(pOut, &pColorTable[SECONDPEL(*pIn)], 3);
}
} }
pIn -= (2 * bprIn) - padIn; pIn -= ((next + 1) * bprIn) - padIn;
} }
} } else if (pBMInfo->cBitCount == 8) {
else for (PRUint32 row = pBMInfo->cy; row > 0; row -= next) {
if (pBMInfo->cBitCount == 8) { for (PRUint32 ndx = 0; ndx < bprIn; ndx += next, pIn += next) {
for (PRUint32 row = pBMInfo->cy; row > 0; row--) { pOut = 4 + (PRUint8*)memcpy(pOut, &pColorTable[*pIn], 3);
for (PRUint32 ndx = 0; ndx < bprIn; ndx++, pIn++) {
pOut = 3 + (PRUint8*)memcpy( pOut, &pColorTable[*pIn], 3);
} }
pIn -= 2 * bprIn; pIn -= (next + 1) * bprIn;
}
} else if (pBMInfo->cBitCount == 24) {
PRUint32 next3 = next * 3;
for (PRUint32 row = pBMInfo->cy; row > 0; row -= next) {
for (PRUint32 ndx = 0; ndx < bprIn; ndx += next3, pIn += next3) {
pOut = 4 + (PRUint8*)memcpy(pOut, pIn, 3);
}
pIn -= (next + 1) * bprIn;
} }
} }
else
if (pBMInfo->cBitCount == 24) {
for (PRUint32 row = pBMInfo->cy; row > 0; row--) {
pOut = bprIn + (PRUint8*)memcpy( pOut, pIn, bprIn);
pIn -= bprIn;
}
}
return;
} }
//------------------------------------------------------------------------ //------------------------------------------------------------------------
// similar to ConvertColorBitMap() except that it skips every other pixel // converts an icon's AND mask into 8-bit alpha data and stores it in the
// horizontally, & every other line vertically; this is the exact reverse // high-order bytes of the BGRA32 bitmap created by ConvertColorBitMap();
// of what GPI does when it expands a mini-icon to full-size // the AND mask is the 2nd half of a pair of bitmaps & the scanlines run
// bottom-to-top - starting at the end and working back to the midpoint
// converts the entire bitmap; since each row is dword-aligned, 16, 20,
// and 40-pixel icons all have padding bits at the end of every row that
// must be skipped over
void ShrinkColorBitMap(PRUint8* inBuf, PBITMAPINFO2 pBMInfo, PRUint8* outBuf) void ConvertMaskBitMap(PRUint8 *inBuf, PBITMAPINFO2 pBMInfo,
PRUint8 *outBuf, PRBool fShrink)
{ {
PRUint32 next = (fShrink ? 2 : 1);
PRUint32 bprIn = ALIGNEDBPR(pBMInfo->cx, pBMInfo->cBitCount);
PRUint32 padIn = bprIn - UNALIGNEDBPR(pBMInfo->cx, pBMInfo->cBitCount);
PRUint8 *pIn = inBuf + (pBMInfo->cy - 1) * bprIn;
PRUint8 *pOut = outBuf + 3;
PRUint32 bprIn = ALIGNEDBPR(pBMInfo->cx, pBMInfo->cBitCount); // for each row or every other row
PRUint8* pIn = inBuf + (pBMInfo->cy - 1) * bprIn; for (PRUint32 row = pBMInfo->cy/2; row > 0; row -= next) {
PRUint8* pOut = outBuf;
PRGB2 pColorTable = &pBMInfo->argbColor[0];
if (pBMInfo->cBitCount == 4) { // for all of the non-padding bits in the row
PRUint32 ubprIn = UNALIGNEDBPR(pBMInfo->cx, pBMInfo->cBitCount); for (PRUint32 bits = pBMInfo->cx; bits; pIn++) {
PRUint32 padIn = bprIn - ubprIn; PRUint8 src = ~(*pIn);
for (PRUint32 row = pBMInfo->cy; row > 0; row -= 2) {
for (PRUint32 ndx = 0; ndx < ubprIn; ndx++, pIn++) {
pOut = 3 + (PRUint8*)memcpy( pOut, &pColorTable[FIRSTPEL(*pIn)], 3);
}
pIn -= (3 * bprIn) - padIn;
}
}
else
if (pBMInfo->cBitCount == 8) {
for (PRUint32 row = pBMInfo->cy; row > 0; row -= 2) {
for (PRUint32 ndx = 0; ndx < bprIn; ndx += 2, pIn += 2) {
pOut = 3 + (PRUint8*)memcpy( pOut, &pColorTable[*pIn], 3);
}
pIn -= 3 * bprIn;
}
}
else
if (pBMInfo->cBitCount == 24) {
for (PRUint32 row = pBMInfo->cy; row > 0; row -= 2) {
for (PRUint32 ndx = 0; ndx < bprIn; ndx += 6, pIn += 3) {
pOut = 3 + (PRUint8*)memcpy( pOut, pIn, 3);
pIn += 3;
}
pIn -= 3 * bprIn;
}
}
return;
}
//------------------------------------------------------------------------
// converts an icon's AND mask into 1-bit alpha data; since the AND mask
// is the 2nd half of a pair of bitmaps & the scanlines run bottom-to-top,
// starting at the end & working back to the midpoint converts the entire
// bitmap; Note: because the input is already padded to a dword boundary,
// the output will be padded automatically
void ConvertMaskBitMap(PRUint8* inBuf, PBITMAPINFO2 pBMInfo, PRUint8* outBuf)
{
PRUint32 bprIn = ALIGNEDBPR(pBMInfo->cx, pBMInfo->cBitCount);
PRUint32 lprIn = bprIn / 4;
PRUint32* pOut32 = (PRUint32*)outBuf;
PRUint32* pIn32 = (PRUint32*)(inBuf + (pBMInfo->cy - 1) * bprIn);
for (PRUint32 row = pBMInfo->cy/2; row > 0; row--) {
for (PRUint32 ndx = 0; ndx < lprIn; ndx++) {
*pOut32++ = ~(*pIn32++);
}
pIn32 -= 2 * lprIn;
}
return;
}
//------------------------------------------------------------------------
// similar to ConvertMaskBitMap() except that it skips every other pixel
// horizontally, & every other line vertically; Note: this is the only
// one of these functions that may have to add padding to its output
void ShrinkMaskBitMap(PRUint8* inBuf, PBITMAPINFO2 pBMInfo, PRUint8* outBuf)
{
PRUint32 bprIn = ALIGNEDBPR(pBMInfo->cx, pBMInfo->cBitCount);
PRUint32 padOut = (bprIn / 2) & 3;
PRUint8* pOut = outBuf;
PRUint8* pIn = inBuf + (pBMInfo->cy - 1) * bprIn;
// for every other row
for (PRUint32 row = pBMInfo->cy/2; row > 0; row -= 2) {
PRUint8 dest = 0;
PRUint8 destMask = 0x80;
// for every byte in the row
for (PRUint32 ndx = 0; ndx < bprIn; ndx++) {
PRUint8 src = ~(*pIn++);
PRUint8 srcMask = 0x80; PRUint8 srcMask = 0x80;
// for every other bit in the current byte // for each bit or every other bit in the current byte
for (PRUint32 bitNdx = 0; bitNdx < 8; bitNdx += 2) { for ( ; srcMask && bits; srcMask >>= next, bits -= next, pOut += 4) {
if (src & srcMask) if (src & srcMask) {
dest |= destMask; *pOut = 0xff;
srcMask >>= 2; }
destMask >>= 1;
}
// if we've filled an output byte from two input bytes, save it
if (!destMask) {
*pOut++ = dest;
dest = 0;
destMask = 0x80;
} }
} }
// after we've processed every input byte in the row, // if the row just completed had padding, pIn won't be pointing
// does the output row need padding? // at the first byte in the next row; padIn compensates for this
if (padOut) { pIn -= ((next + 1) * bprIn) - padIn;
memset( pOut, 0, padOut);
pOut += padOut;
}
pIn -= 3 * bprIn;
} }
return;
} }
//------------------------------------------------------------------------ //------------------------------------------------------------------------