mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
[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
This commit is contained in:
mozilla@weilbacher.org
parent
88b2bdc6f7
commit
d63fc3957a
@ -51,6 +51,7 @@ REQUIRES = xpcom \
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necko \
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mimetype \
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exthandler \
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widget \
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$(NULL)
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CPPSRCS = nsIconChannel.cpp
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@ -1,6 +1,6 @@
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set sw=2 sts=2 et cin: */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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@ -48,9 +48,10 @@
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#include "nsMemory.h"
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#include "nsNetUtil.h"
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#include "nsInt64.h"
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#include "nsIFile.h"
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#include "nsILocalFile.h"
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#include "nsIFileURL.h"
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#include "nsDirectoryServiceDefs.h"
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#include "nsIRwsService.h"
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#define INCL_PM
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#include <os2.h>
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@ -68,12 +69,24 @@
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#define UNALIGNEDBPR(cx,bits) (( ((cx)*(bits)) + 7) / 8)
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// native icon functions
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HPOINTER GetFileIcon(nsCString& file, PRBool fExists);
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static HPOINTER GetIcon(nsCString& file, PRBool fExists,
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PRBool fMini, PRBool *fWpsIcon);
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static void DestroyIcon(HPOINTER hIcon, PRBool fWpsIcon);
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void ConvertColorBitMap(PRUint8* inBuf, PBITMAPINFO2 pBMInfo, PRUint8* outBuf);
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void ShrinkColorBitMap(PRUint8* inBuf, PBITMAPINFO2 pBMInfo, PRUint8* outBuf);
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void ConvertMaskBitMap(PRUint8* inBuf, PBITMAPINFO2 pBMInfo, PRUint8* outBuf);
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void ShrinkMaskBitMap(PRUint8* inBuf, PBITMAPINFO2 pBMInfo, PRUint8* outBuf);
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void ConvertColorBitMap(PRUint8 *inBuf, PBITMAPINFO2 pBMInfo,
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PRUint8 *outBuf, PRBool fShrink);
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void ConvertMaskBitMap(PRUint8 *inBuf, PBITMAPINFO2 pBMInfo,
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PRUint8 *outBuf, PRBool fShrink);
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//------------------------------------------------------------------------
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// reduces overhead by preventing calls to nsRws when it isn't present
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#ifdef MOZ_PHOENIX // should work fine in Firefox
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static PRBool sUseRws = PR_TRUE;
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#else // XXX causes duplicate attachment icons and crashes in apps that
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// use mailnews, so off now for other apps
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static PRBool sUseRws = PR_FALSE;
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#endif
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//------------------------------------------------------------------------
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// nsIconChannel methods
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@ -237,26 +250,23 @@ nsresult nsIconChannel::ExtractIconInfoFromUrl(nsIFile ** aLocalFile, PRUint32 *
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//------------------------------------------------------------------------
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// retrieves a native icon with 16, 256, or 16M colors and converts it
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// to 24-bit BGR with 1-bit alpha data (BGR_A1 format); Note: this
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// implementation ignores the file's MIME-type because using it virtually
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// guarantees we'll end up with an inappropriate icon (i.e. an .exe icon)
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// retrieves a native icon with 16, 256, or 16M colors and converts it to cairo
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// format; Note: this implementation ignores the file's MIME-type because
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// using it virtually guarantees we'll end up with an inappropriate icon (i.e.
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// an .exe icon)
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nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, PRBool nonBlocking)
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nsresult nsIconChannel::MakeInputStream(nsIInputStream **_retval,
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PRBool nonBlocking)
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{
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#ifdef MOZ_CAIRO_GFX
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// This needs to be changed to match the format changes described in
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// nsIconDecoder.h. For cairo, the icon format is ARGB (A in highest
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// bits, B in lowest bits, based on platform endianness).
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return NS_ERROR_NOT_IMPLEMENTED;
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#endif
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// get some details about this icon
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nsCOMPtr<nsIFile> localFile;
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PRUint32 desiredImageSize;
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nsXPIDLCString contentType;
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nsCAutoString filePath;
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nsresult rv = ExtractIconInfoFromUrl(getter_AddRefs(localFile), &desiredImageSize, contentType, filePath);
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nsresult rv = ExtractIconInfoFromUrl(getter_AddRefs(localFile),
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&desiredImageSize, contentType,
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filePath);
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NS_ENSURE_SUCCESS(rv, rv);
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// if the file exists, get its path
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@ -266,15 +276,17 @@ nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, PRBool nonBloc
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localFile->Exists(&fileExists);
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}
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// get the icon from the file
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HPOINTER hIcon = GetFileIcon(filePath, fileExists);
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// get the file's icon from either the WPS or PM
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PRBool fWpsIcon = PR_FALSE;
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HPOINTER hIcon = GetIcon(filePath, fileExists,
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desiredImageSize <= 16, &fWpsIcon);
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if (hIcon == NULLHANDLE)
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return NS_ERROR_FAILURE;
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// get the color & mask bitmaps used by the icon
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POINTERINFO IconInfo;
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if (!WinQueryPointerInfo(hIcon, &IconInfo)) {
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WinFreeFileIcon( hIcon);
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DestroyIcon(hIcon, fWpsIcon);
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return NS_ERROR_FAILURE;
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}
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@ -285,9 +297,9 @@ nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, PRBool nonBloc
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if (IconInfo.hbmMiniPointer) {
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IconInfo.hbmColor = IconInfo.hbmMiniColor;
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IconInfo.hbmPointer = IconInfo.hbmMiniPointer;
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}
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else
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} else {
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fShrink = TRUE;
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}
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}
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// various resources to be allocated
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@ -297,8 +309,8 @@ nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, PRBool nonBloc
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HDC hdc = 0;
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HPS hps = 0;
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// using this dummy do{...}while(0) "loop" guarantees resources will
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// be deallocated, eliminates the need for nesting, and generally makes
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// using this dummy do{...}while(0) "loop" guarantees that resources will
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// be deallocated, but eliminates the need for nesting, and generally makes
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// testing for & dealing with errors pretty painless (just 'break')
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do {
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rv = NS_ERROR_FAILURE;
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@ -319,27 +331,25 @@ nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, PRBool nonBloc
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break;
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// alloc space for the color bitmap data
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PRUint32 cbInRow = ALIGNEDBPR( BMHeader.cx, BMHeader.cBitCount);
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PRUint32 cbInRow = ALIGNEDBPR(BMHeader.cx, BMHeader.cBitCount);
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PRUint32 cbInBuf = cbInRow * BMHeader.cy;
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pInBuf = (PRUint8*)nsMemory::Alloc(cbInBuf);
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if (!pInBuf)
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break;
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memset( pInBuf, 0, cbInBuf);
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memset(pInBuf, 0, cbInBuf);
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// alloc space for the 24-bit BGR_A1 bitmap we're creating
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PRUint32 cxOut = (fShrink ? BMHeader.cx / 2 : BMHeader.cx);
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PRUint32 cyOut = (fShrink ? BMHeader.cy / 2 : BMHeader.cy);
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PRUint32 cbColor = ALIGNEDBPR( cxOut, 24) * cyOut;
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PRUint32 cbMask = ALIGNEDBPR( cxOut, 1) * cyOut;
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PRUint32 cbOutBuf = 3 + cbColor + cbMask;
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// alloc space for the BGRA32 bitmap we're creating
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PRUint32 cxOut = fShrink ? BMHeader.cx / 2 : BMHeader.cx;
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PRUint32 cyOut = fShrink ? BMHeader.cy / 2 : BMHeader.cy;
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PRUint32 cbOutBuf = 2 + ALIGNEDBPR(cxOut, 32) * cyOut;
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pOutBuf = (PRUint8*)nsMemory::Alloc(cbOutBuf);
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if (!pOutBuf)
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break;
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memset( pOutBuf, 0, cbOutBuf);
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memset(pOutBuf, 0, cbOutBuf);
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// create a DC and PS
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DEVOPENSTRUC dop = {NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL};
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hdc = DevOpenDC( (HAB)0, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&dop, NULLHANDLE);
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DEVOPENSTRUC dop = {NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL};
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hdc = DevOpenDC((HAB)0, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&dop, NULLHANDLE);
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if (!hdc)
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break;
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@ -349,29 +359,26 @@ nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, PRBool nonBloc
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break;
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// get the color bits
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memset( pBMInfo, 0, cbBMInfo);
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*((PBITMAPINFOHEADER2)pBMInfo ) = BMHeader;
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memset(pBMInfo, 0, cbBMInfo);
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*((PBITMAPINFOHEADER2)pBMInfo) = BMHeader;
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GpiSetBitmap(hps, IconInfo.hbmColor);
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if (GpiQueryBitmapBits( hps, 0L, (LONG)BMHeader.cy,
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(BYTE*)pInBuf, pBMInfo) <= 0)
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if (GpiQueryBitmapBits(hps, 0L, (LONG)BMHeader.cy,
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(BYTE*)pInBuf, pBMInfo) <= 0)
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break;
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// The first 2 bytes are the width & height of the icon in pixels
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// The first 2 bytes are the width & height of the icon in pixels,
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// the remaining bytes are BGRA32 (B in first byte, A in last)
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PRUint8* outPtr = pOutBuf;
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*outPtr++ = (PRUint8)cxOut;
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*outPtr++ = (PRUint8)cyOut;
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// then the number of bits of alpha per pixel
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*outPtr++ = (PRUint8)1;
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// convert the color bitmap
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pBMInfo->cbImage = cbInBuf;
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if (fShrink)
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ShrinkColorBitMap( pInBuf, pBMInfo, outPtr);
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else
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ConvertColorBitMap( pInBuf, pBMInfo, outPtr);
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outPtr += cbColor;
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ConvertColorBitMap(pInBuf, pBMInfo, outPtr, fShrink);
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// now we need to tack on the alpha data
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// now we need to tack on the alpha data, so jump back to the first
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// pixel in the output buffer
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outPtr = pOutBuf+2;
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// Get the mask info
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BMHeader.cbFix = sizeof(BMHeader);
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@ -379,29 +386,26 @@ nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, PRBool nonBloc
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break;
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// if the existing input buffer isn't large enough, reallocate it
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cbInRow = ALIGNEDBPR( BMHeader.cx, BMHeader.cBitCount);
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cbInRow = ALIGNEDBPR(BMHeader.cx, BMHeader.cBitCount);
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if ((cbInRow * BMHeader.cy) > cbInBuf) // Need more for mask
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{
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cbInBuf = cbInRow * BMHeader.cy;
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nsMemory::Free(pInBuf);
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pInBuf = (PRUint8*)nsMemory::Alloc(cbInBuf);
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memset( pInBuf, 0, cbInBuf);
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pInBuf = (PRUint8*)nsMemory::Alloc(cbInBuf);
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memset(pInBuf, 0, cbInBuf);
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}
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// get the mask/alpha bits
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memset( pBMInfo, 0, cbBMInfo);
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*((PBITMAPINFOHEADER2)pBMInfo ) = BMHeader;
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memset(pBMInfo, 0, cbBMInfo);
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*((PBITMAPINFOHEADER2)pBMInfo) = BMHeader;
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GpiSetBitmap(hps, IconInfo.hbmPointer);
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if (GpiQueryBitmapBits( hps, 0L, (LONG)BMHeader.cy,
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(BYTE*)pInBuf, pBMInfo) <= 0)
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if (GpiQueryBitmapBits(hps, 0L, (LONG)BMHeader.cy,
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(BYTE*)pInBuf, pBMInfo) <= 0)
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break;
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// convert the mask/alpha bitmap
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pBMInfo->cbImage = cbInBuf;
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if (fShrink)
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ShrinkMaskBitMap( pInBuf, pBMInfo, outPtr);
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else
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ConvertMaskBitMap( pInBuf, pBMInfo, outPtr);
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ConvertMaskBitMap(pInBuf, pBMInfo, outPtr, fShrink);
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// create a pipe
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nsCOMPtr<nsIInputStream> inStream;
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@ -413,23 +417,22 @@ nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, PRBool nonBloc
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// put our data into the pipe
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PRUint32 written;
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rv = outStream->Write( reinterpret_cast<const char*>(pOutBuf),
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cbOutBuf, &written);
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rv = outStream->Write(reinterpret_cast<const char*>(pOutBuf),
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cbOutBuf, &written);
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if (NS_FAILED(rv))
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break;
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// success! so addref the pipe
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NS_ADDREF(*_retval = inStream);
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} while (0);
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// free all the resources we allocated
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if (pOutBuf)
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nsMemory::Free( pOutBuf);
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nsMemory::Free(pOutBuf);
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if (pInBuf)
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nsMemory::Free( pInBuf);
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nsMemory::Free(pInBuf);
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if (pBMInfo)
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nsMemory::Free( pBMInfo);
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nsMemory::Free(pBMInfo);
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if (hps) {
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GpiAssociate(hps, NULLHANDLE);
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GpiDestroyPS(hps);
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@ -437,42 +440,68 @@ nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, PRBool nonBloc
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if (hdc)
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DevCloseDC(hdc);
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if (hIcon)
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WinFreeFileIcon( hIcon);
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DestroyIcon(hIcon, fWpsIcon);
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return rv;
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}
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//------------------------------------------------------------------------
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// if the file exists, get its icon; if it doesn't, create a dummy file
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// with the same extension, then use whatever icon the system assigns it
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// get the file's icon from either the WPS or PM
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HPOINTER GetFileIcon(nsCString& file, PRBool fExists)
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static HPOINTER GetIcon(nsCString& file, PRBool fExists,
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PRBool fMini, PRBool *fWpsIcon)
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{
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HPOINTER hRtn = 0;
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*fWpsIcon = PR_FALSE;
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if (fExists)
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return WinLoadFileIcon( file.get(), FALSE);
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nsCOMPtr<nsIFile> dummyPath;
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if (NS_FAILED(NS_GetSpecialDirectory(NS_OS_TEMP_DIR,
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getter_AddRefs(dummyPath))))
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if (file.IsEmpty())
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return 0;
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// if RWS is enabled, try to get the icon from the WPS
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if (sUseRws) {
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nsCOMPtr<nsIRwsService> rwsSvc(do_GetService("@mozilla.org/rwsos2;1"));
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if (!rwsSvc)
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sUseRws = PR_FALSE;
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else {
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if (fExists) {
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rwsSvc->IconFromPath(file.get(), PR_FALSE, fMini, (PRUint32*)&hRtn);
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} else {
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const char *ptr = file.get();
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if (*ptr == '.')
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ptr++;
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rwsSvc->IconFromExtension(ptr, fMini, (PRUint32*)&hRtn);
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}
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}
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}
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// if we got an icon from the WPS, set the flag & exit
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if (hRtn) {
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*fWpsIcon = PR_TRUE;
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return hRtn;
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}
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// if the file exists already, get its icon
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if (fExists)
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return WinLoadFileIcon(file.get(), FALSE);
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// otherwise, create a temporary file with the correct extension,
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// then retrieve whatever icon PM assigns it
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if (file.First() == '.')
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file.Insert("moztmp", 0);
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if (NS_FAILED(dummyPath->AppendNative(file)))
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nsCOMPtr<nsIFile> tempPath;
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if (NS_FAILED(NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(tempPath))) ||
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NS_FAILED(tempPath->AppendNative(file)))
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return 0;
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nsCAutoString dummyFile;
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dummyPath->GetNativePath(dummyFile);
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HPOINTER hRtn = 0;
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FILE* fp = fopen( dummyFile.get(), "wb+");
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nsCAutoString pathStr;
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tempPath->GetNativePath(pathStr);
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FILE* fp = fopen(pathStr.get(), "wb+");
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if (fp) {
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fclose( fp);
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hRtn = WinLoadFileIcon(dummyFile.get(), FALSE);
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remove(dummyFile.get());
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fclose(fp);
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hRtn = WinLoadFileIcon(pathStr.get(), FALSE);
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remove(pathStr.get());
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}
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return hRtn;
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@ -480,177 +509,103 @@ HPOINTER GetFileIcon(nsCString& file, PRBool fExists)
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//------------------------------------------------------------------------
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// converts 16, 256, & 16M color bitmaps to 24-bit BGR format; since the
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// scanlines in OS/2 bitmaps run bottom-to-top, it starts at the end of the
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// input buffer & works its way back; Note: no output padding is needed
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// for any expected color-depth or size; only 4-bit, 20x20 icons contain
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// input padding that has to be ignored
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void ConvertColorBitMap(PRUint8* inBuf, PBITMAPINFO2 pBMInfo, PRUint8* outBuf)
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static void DestroyIcon(HPOINTER hIcon, PRBool fWpsIcon)
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{
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if (fWpsIcon)
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WinDestroyPointer(hIcon);
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else
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WinFreeFileIcon(hIcon);
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PRUint32 bprIn = ALIGNEDBPR(pBMInfo->cx, pBMInfo->cBitCount);
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PRUint8* pIn = inBuf + (pBMInfo->cy - 1) * bprIn;
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PRUint8* pOut = outBuf;
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PRGB2 pColorTable = &pBMInfo->argbColor[0];
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return;
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}
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//------------------------------------------------------------------------
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// converts 16, 256, & 16M color bitmaps to BGRA32 format; the alpha
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// channel byte is left open & will be filled in by ConvertMaskBitMap();
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// since the scanlines in OS/2 bitmaps run bottom-to-top, it starts at the
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// end of the input buffer & works its way back; Note: only 4-bit, 20x20
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// icons contain input padding that has to be ignored
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void ConvertColorBitMap(PRUint8 *inBuf, PBITMAPINFO2 pBMInfo,
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PRUint8 *outBuf, PRBool fShrink)
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{
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PRUint32 next = fShrink ? 2 : 1;
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PRUint32 bprIn = ALIGNEDBPR(pBMInfo->cx, pBMInfo->cBitCount);
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PRUint8 *pIn = inBuf + (pBMInfo->cy - 1) * bprIn;
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PRUint8 *pOut = outBuf;
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PRGB2 pColorTable = &pBMInfo->argbColor[0];
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if (pBMInfo->cBitCount == 4) {
|
||||
PRUint32 ubprIn = UNALIGNEDBPR(pBMInfo->cx, pBMInfo->cBitCount);
|
||||
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++) {
|
||||
pOut = 3 + (PRUint8*)memcpy( pOut, &pColorTable[FIRSTPEL(*pIn)], 3);
|
||||
pOut = 3 + (PRUint8*)memcpy( pOut, &pColorTable[SECONDPEL(*pIn)], 3);
|
||||
pOut = 4 + (PRUint8*)memcpy(pOut, &pColorTable[FIRSTPEL(*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) {
|
||||
for (PRUint32 row = pBMInfo->cy; row > 0; row--) {
|
||||
for (PRUint32 ndx = 0; ndx < bprIn; ndx++, pIn++) {
|
||||
pOut = 3 + (PRUint8*)memcpy( pOut, &pColorTable[*pIn], 3);
|
||||
} else if (pBMInfo->cBitCount == 8) {
|
||||
for (PRUint32 row = pBMInfo->cy; row > 0; row -= next) {
|
||||
for (PRUint32 ndx = 0; ndx < bprIn; ndx += next, pIn += next) {
|
||||
pOut = 4 + (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
|
||||
// horizontally, & every other line vertically; this is the exact reverse
|
||||
// of what GPI does when it expands a mini-icon to full-size
|
||||
// converts an icon's AND mask into 8-bit alpha data and stores it in the
|
||||
// high-order bytes of the BGRA32 bitmap created by ConvertColorBitMap();
|
||||
// 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);
|
||||
PRUint8* pIn = inBuf + (pBMInfo->cy - 1) * bprIn;
|
||||
PRUint8* pOut = outBuf;
|
||||
PRGB2 pColorTable = &pBMInfo->argbColor[0];
|
||||
// for each row or every other row
|
||||
for (PRUint32 row = pBMInfo->cy/2; row > 0; row -= next) {
|
||||
|
||||
if (pBMInfo->cBitCount == 4) {
|
||||
PRUint32 ubprIn = UNALIGNEDBPR(pBMInfo->cx, pBMInfo->cBitCount);
|
||||
PRUint32 padIn = bprIn - ubprIn;
|
||||
|
||||
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++);
|
||||
// for all of the non-padding bits in the row
|
||||
for (PRUint32 bits = pBMInfo->cx; bits; pIn++) {
|
||||
PRUint8 src = ~(*pIn);
|
||||
PRUint8 srcMask = 0x80;
|
||||
|
||||
// for every other bit in the current byte
|
||||
for (PRUint32 bitNdx = 0; bitNdx < 8; bitNdx += 2) {
|
||||
if (src & srcMask)
|
||||
dest |= destMask;
|
||||
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;
|
||||
// for each bit or every other bit in the current byte
|
||||
for ( ; srcMask && bits; srcMask >>= next, bits -= next, pOut += 4) {
|
||||
if (src & srcMask) {
|
||||
*pOut = 0xff;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// after we've processed every input byte in the row,
|
||||
// does the output row need padding?
|
||||
if (padOut) {
|
||||
memset( pOut, 0, padOut);
|
||||
pOut += padOut;
|
||||
}
|
||||
|
||||
pIn -= 3 * bprIn;
|
||||
// if the row just completed had padding, pIn won't be pointing
|
||||
// at the first byte in the next row; padIn compensates for this
|
||||
pIn -= ((next + 1) * bprIn) - padIn;
|
||||
}
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
//------------------------------------------------------------------------
|
||||
|
||||
Loading…
Reference in New Issue
Block a user