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https://github.com/reactos/reactos.git
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988 lines
27 KiB
C
988 lines
27 KiB
C
/*
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* ReactOS W32 Subsystem
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* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <win32k.h>
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#define NDEBUG
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#include <debug.h>
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HBITMAP APIENTRY
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IntGdiCreateBitmap(
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INT Width,
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INT Height,
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UINT Planes,
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UINT BitsPixel,
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IN OPTIONAL LPBYTE pBits)
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{
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HBITMAP hBitmap;
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SIZEL Size;
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LONG WidthBytes;
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PSURFACE psurfBmp;
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/* NOTE: Windows also doesn't store nr. of planes separately! */
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BitsPixel = BITMAP_GetRealBitsPixel(BitsPixel * Planes);
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/* Check parameters */
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if (BitsPixel == 0 || Width <= 0 || Width >= 0x8000000 || Height == 0)
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{
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DPRINT1("Width = %d, Height = %d BitsPixel = %d\n",
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Width, Height, BitsPixel);
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SetLastWin32Error(ERROR_INVALID_PARAMETER);
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return 0;
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}
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WidthBytes = BITMAP_GetWidthBytes(Width, BitsPixel);
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Size.cx = Width;
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Size.cy = abs(Height);
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/* Make sure that cjBits will not overflow */
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if ((ULONGLONG)WidthBytes * Size.cy >= 0x100000000ULL)
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{
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DPRINT1("Width = %d, Height = %d BitsPixel = %d\n",
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Width, Height, BitsPixel);
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SetLastWin32Error(ERROR_INVALID_PARAMETER);
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return 0;
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}
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/* Create the bitmap object. */
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hBitmap = IntCreateBitmap(Size, WidthBytes,
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BitmapFormat(BitsPixel, BI_RGB),
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(Height < 0 ? BMF_TOPDOWN : 0) |
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(NULL == pBits ? 0 : BMF_NOZEROINIT), NULL);
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if (!hBitmap)
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{
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DPRINT("IntGdiCreateBitmap: returned 0\n");
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return 0;
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}
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psurfBmp = SURFACE_LockSurface(hBitmap);
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if (psurfBmp == NULL)
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{
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GreDeleteObject(hBitmap);
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return NULL;
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}
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psurfBmp->flFlags = BITMAPOBJ_IS_APIBITMAP;
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psurfBmp->hDC = NULL; // Fixme
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if (NULL != pBits)
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{
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IntSetBitmapBits(psurfBmp, psurfBmp->SurfObj.cjBits, pBits);
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}
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SURFACE_UnlockSurface(psurfBmp);
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DPRINT("IntGdiCreateBitmap : %dx%d, %d BPP colors, topdown %d, returning %08x\n",
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Size.cx, Size.cy, BitsPixel, (Height < 0 ? 1 : 0), hBitmap);
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return hBitmap;
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}
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HBITMAP APIENTRY
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NtGdiCreateBitmap(
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INT Width,
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INT Height,
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UINT Planes,
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UINT BitsPixel,
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IN OPTIONAL LPBYTE pUnsafeBits)
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{
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if (pUnsafeBits)
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{
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BOOL Hit = FALSE;
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UINT cjBits = BITMAP_GetWidthBytes(Width, BitsPixel) * abs(Height);
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// FIXME: Use MmSecureVirtualMemory
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_SEH2_TRY
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{
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ProbeForRead(pUnsafeBits, cjBits, 1);
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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Hit = TRUE;
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}
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_SEH2_END
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if (Hit) return 0;
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}
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return IntGdiCreateBitmap(Width, Height, Planes, BitsPixel, pUnsafeBits);
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}
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HBITMAP FASTCALL
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IntCreateCompatibleBitmap(
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PDC Dc,
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INT Width,
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INT Height)
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{
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HBITMAP Bmp = NULL;
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/* MS doc says if width or height is 0, return 1-by-1 pixel, monochrome bitmap */
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if (0 == Width || 0 == Height)
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{
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Bmp = NtGdiGetStockObject(DEFAULT_BITMAP);
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}
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else
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{
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if (Dc->dctype != DC_TYPE_MEMORY)
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{
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Bmp = IntGdiCreateBitmap(abs(Width),
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abs(Height),
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IntGdiGetDeviceCaps(Dc,PLANES),
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IntGdiGetDeviceCaps(Dc,BITSPIXEL),
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NULL);
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}
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else
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{
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DIBSECTION dibs;
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INT Count;
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PSURFACE psurf = Dc->dclevel.pSurface;
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Count = BITMAP_GetObject(psurf, sizeof(dibs), &dibs);
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if (Count)
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{
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if (Count == sizeof(BITMAP))
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{
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/* We have a bitmap bug!!! W/O the HACK, we have white icons.
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MSDN Note: When a memory device context is created, it initially
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has a 1-by-1 monochrome bitmap selected into it. If this memory
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device context is used in CreateCompatibleBitmap, the bitmap that
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is created is a monochrome bitmap. To create a color bitmap, use
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the hDC that was used to create the memory device context, as
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shown in the following code:
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HDC memDC = CreateCompatibleDC(hDC);
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HBITMAP memBM = CreateCompatibleBitmap(hDC, nWidth, nHeight);
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SelectObject(memDC, memBM);
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*/
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Bmp = IntGdiCreateBitmap(abs(Width),
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abs(Height),
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dibs.dsBm.bmPlanes,
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IntGdiGetDeviceCaps(Dc,BITSPIXEL),//<-- HACK! dibs.dsBm.bmBitsPixel, // <-- Correct!
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NULL);
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}
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else
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{
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/* A DIB section is selected in the DC */
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BITMAPINFO *bi;
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PVOID Bits;
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/* Allocate memory for a BITMAPINFOHEADER structure and a
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color table. The maximum number of colors in a color table
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is 256 which corresponds to a bitmap with depth 8.
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Bitmaps with higher depths don't have color tables. */
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bi = ExAllocatePoolWithTag(PagedPool,
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sizeof(BITMAPINFOHEADER) +
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256 * sizeof(RGBQUAD),
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TAG_TEMP);
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if (bi)
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{
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bi->bmiHeader.biSize = sizeof(bi->bmiHeader);
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bi->bmiHeader.biWidth = Width;
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bi->bmiHeader.biHeight = Height;
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bi->bmiHeader.biPlanes = dibs.dsBmih.biPlanes;
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bi->bmiHeader.biBitCount = dibs.dsBmih.biBitCount;
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bi->bmiHeader.biCompression = dibs.dsBmih.biCompression;
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bi->bmiHeader.biSizeImage = 0;
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bi->bmiHeader.biXPelsPerMeter = dibs.dsBmih.biXPelsPerMeter;
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bi->bmiHeader.biYPelsPerMeter = dibs.dsBmih.biYPelsPerMeter;
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bi->bmiHeader.biClrUsed = dibs.dsBmih.biClrUsed;
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bi->bmiHeader.biClrImportant = dibs.dsBmih.biClrImportant;
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if (bi->bmiHeader.biCompression == BI_BITFIELDS)
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{
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/* Copy the color masks */
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RtlCopyMemory(bi->bmiColors, dibs.dsBitfields, 3 * sizeof(DWORD));
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}
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else if (bi->bmiHeader.biBitCount <= 8)
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{
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/* Copy the color table */
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UINT Index;
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PPALETTE PalGDI = PALETTE_LockPalette(psurf->hDIBPalette);
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if (!PalGDI)
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{
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ExFreePoolWithTag(bi, TAG_TEMP);
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SetLastWin32Error(ERROR_INVALID_HANDLE);
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return 0;
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}
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for (Index = 0;
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Index < 256 && Index < PalGDI->NumColors;
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Index++)
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{
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bi->bmiColors[Index].rgbRed = PalGDI->IndexedColors[Index].peRed;
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bi->bmiColors[Index].rgbGreen = PalGDI->IndexedColors[Index].peGreen;
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bi->bmiColors[Index].rgbBlue = PalGDI->IndexedColors[Index].peBlue;
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bi->bmiColors[Index].rgbReserved = 0;
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}
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PALETTE_UnlockPalette(PalGDI);
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}
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Bmp = DIB_CreateDIBSection(Dc,
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bi,
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DIB_RGB_COLORS,
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&Bits,
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NULL,
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0,
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0);
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ExFreePoolWithTag(bi, TAG_TEMP);
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return Bmp;
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}
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}
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}
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}
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}
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return Bmp;
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}
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HBITMAP APIENTRY
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NtGdiCreateCompatibleBitmap(
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HDC hDC,
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INT Width,
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INT Height)
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{
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HBITMAP Bmp;
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PDC Dc;
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if (Width <= 0 || Height <= 0 || (Width * Height) > 0x3FFFFFFF)
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{
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SetLastWin32Error(ERROR_INVALID_PARAMETER);
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return NULL;
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}
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if (!hDC)
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return IntGdiCreateBitmap(Width, Height, 1, 1, 0);
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Dc = DC_LockDc(hDC);
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DPRINT("NtGdiCreateCompatibleBitmap(%04x,%d,%d, bpp:%d) = \n",
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hDC, Width, Height, Dc->ppdev->gdiinfo.cBitsPixel);
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if (NULL == Dc)
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{
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SetLastWin32Error(ERROR_INVALID_HANDLE);
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return NULL;
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}
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Bmp = IntCreateCompatibleBitmap(Dc, Width, Height);
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DPRINT("\t\t%04x\n", Bmp);
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DC_UnlockDc(Dc);
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return Bmp;
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}
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BOOL APIENTRY
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NtGdiGetBitmapDimension(
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HBITMAP hBitmap,
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LPSIZE Dimension)
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{
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PSURFACE psurfBmp;
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BOOL Ret = TRUE;
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if (hBitmap == NULL)
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return FALSE;
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psurfBmp = SURFACE_LockSurface(hBitmap);
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if (psurfBmp == NULL)
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{
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SetLastWin32Error(ERROR_INVALID_HANDLE);
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return FALSE;
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}
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_SEH2_TRY
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{
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ProbeForWrite(Dimension, sizeof(SIZE), 1);
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*Dimension = psurfBmp->dimension;
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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Ret = FALSE;
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}
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_SEH2_END
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SURFACE_UnlockSurface(psurfBmp);
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return Ret;
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}
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COLORREF APIENTRY
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NtGdiGetPixel(HDC hDC, INT XPos, INT YPos)
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{
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PDC dc = NULL;
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COLORREF Result = (COLORREF)CLR_INVALID; // default to failure
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BOOL bInRect = FALSE;
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SURFACE *psurf;
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SURFOBJ *pso;
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HPALETTE hpal = 0;
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PPALETTE ppal;
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EXLATEOBJ exlo;
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HBITMAP hBmpTmp;
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dc = DC_LockDc(hDC);
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if (!dc)
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{
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SetLastWin32Error(ERROR_INVALID_HANDLE);
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return Result;
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}
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if (dc->dctype == DC_TYPE_INFO)
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{
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DC_UnlockDc(dc);
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return Result;
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}
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XPos += dc->ptlDCOrig.x;
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YPos += dc->ptlDCOrig.y;
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if (RECTL_bPointInRect(&dc->rosdc.CombinedClip->rclBounds, XPos, YPos))
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{
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bInRect = TRUE;
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psurf = dc->dclevel.pSurface;
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if (psurf)
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{
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pso = &psurf->SurfObj;
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hpal = psurf->hDIBPalette;
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if (!hpal) hpal = pPrimarySurface->devinfo.hpalDefault;
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ppal = PALETTE_ShareLockPalette(hpal);
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if (psurf->SurfObj.iBitmapFormat == BMF_1BPP && !psurf->hSecure)
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{
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/* FIXME: palette should be gpalMono already ! */
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EXLATEOBJ_vInitialize(&exlo, &gpalMono, &gpalRGB, 0, 0xffffff, 0);
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}
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else
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{
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EXLATEOBJ_vInitialize(&exlo, ppal, &gpalRGB, 0, 0xffffff, 0);
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}
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// check if this DC has a DIB behind it...
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if (pso->pvScan0) // STYPE_BITMAP == pso->iType
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{
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ASSERT(pso->lDelta);
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Result = XLATEOBJ_iXlate(&exlo.xlo,
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DibFunctionsForBitmapFormat[pso->iBitmapFormat].DIB_GetPixel(pso, XPos, YPos));
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}
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EXLATEOBJ_vCleanup(&exlo);
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PALETTE_ShareUnlockPalette(ppal);
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}
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}
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DC_UnlockDc(dc);
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// if Result is still CLR_INVALID, then the "quick" method above didn't work
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if (bInRect && Result == CLR_INVALID)
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{
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// FIXME: create a 1x1 32BPP DIB, and blit to it
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HDC hDCTmp = NtGdiCreateCompatibleDC(hDC);
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if (hDCTmp)
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{
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static const BITMAPINFOHEADER bih = { sizeof(BITMAPINFOHEADER), 1, 1, 1, 32, BI_RGB, 0, 0, 0, 0, 0 };
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BITMAPINFO bi;
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RtlMoveMemory(&(bi.bmiHeader), &bih, sizeof(bih));
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hBmpTmp = NtGdiCreateDIBitmapInternal(hDC,
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bi.bmiHeader.biWidth,
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bi.bmiHeader.biHeight,
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0,
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NULL,
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&bi,
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DIB_RGB_COLORS,
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bi.bmiHeader.biBitCount,
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bi.bmiHeader.biSizeImage,
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0,
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0);
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//HBITMAP hBmpTmp = IntGdiCreateBitmap(1, 1, 1, 32, NULL);
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if (hBmpTmp)
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{
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HBITMAP hBmpOld = (HBITMAP)NtGdiSelectBitmap(hDCTmp, hBmpTmp);
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if (hBmpOld)
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{
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PSURFACE psurf;
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NtGdiBitBlt(hDCTmp, 0, 0, 1, 1, hDC, XPos, YPos, SRCCOPY, 0, 0);
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NtGdiSelectBitmap(hDCTmp, hBmpOld);
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// our bitmap is no longer selected, so we can access it's stuff...
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psurf = SURFACE_LockSurface(hBmpTmp);
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if (psurf)
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{
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// Dont you need to convert something here?
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Result = *(COLORREF*)psurf->SurfObj.pvScan0;
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SURFACE_UnlockSurface(psurf);
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}
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}
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GreDeleteObject(hBmpTmp);
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}
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NtGdiDeleteObjectApp(hDCTmp);
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}
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}
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return Result;
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}
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LONG APIENTRY
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IntGetBitmapBits(
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PSURFACE psurf,
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DWORD Bytes,
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OUT PBYTE Bits)
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{
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LONG ret;
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ASSERT(Bits);
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/* Don't copy more bytes than the buffer has */
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Bytes = min(Bytes, psurf->SurfObj.cjBits);
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#if 0
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/* FIXME: Call DDI CopyBits here if available */
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if (psurf->DDBitmap)
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{
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DPRINT("Calling device specific BitmapBits\n");
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if (psurf->DDBitmap->funcs->pBitmapBits)
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{
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ret = psurf->DDBitmap->funcs->pBitmapBits(hbitmap,
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bits,
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count,
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DDB_GET);
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}
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else
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{
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ERR_(bitmap)("BitmapBits == NULL??\n");
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ret = 0;
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}
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}
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else
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#endif
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{
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RtlCopyMemory(Bits, psurf->SurfObj.pvBits, Bytes);
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ret = Bytes;
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}
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return ret;
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}
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LONG APIENTRY
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NtGdiGetBitmapBits(
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HBITMAP hBitmap,
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ULONG Bytes,
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OUT OPTIONAL PBYTE pUnsafeBits)
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{
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PSURFACE psurf;
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LONG bmSize, ret;
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if (pUnsafeBits != NULL && Bytes == 0)
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{
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return 0;
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}
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psurf = SURFACE_LockSurface(hBitmap);
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if (!psurf)
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{
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SetLastWin32Error(ERROR_INVALID_HANDLE);
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return 0;
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}
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bmSize = BITMAP_GetWidthBytes(psurf->SurfObj.sizlBitmap.cx,
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BitsPerFormat(psurf->SurfObj.iBitmapFormat)) *
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abs(psurf->SurfObj.sizlBitmap.cy);
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/* If the bits vector is null, the function should return the read size */
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if (pUnsafeBits == NULL)
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{
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SURFACE_UnlockSurface(psurf);
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return bmSize;
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}
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/* Don't copy more bytes than the buffer has */
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Bytes = min(Bytes, bmSize);
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// FIXME: use MmSecureVirtualMemory
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_SEH2_TRY
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{
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ProbeForWrite(pUnsafeBits, Bytes, 1);
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ret = IntGetBitmapBits(psurf, Bytes, pUnsafeBits);
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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ret = 0;
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}
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_SEH2_END
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SURFACE_UnlockSurface(psurf);
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return ret;
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}
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LONG APIENTRY
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IntSetBitmapBits(
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|
PSURFACE psurf,
|
|
DWORD Bytes,
|
|
IN PBYTE Bits)
|
|
{
|
|
LONG ret;
|
|
|
|
/* Don't copy more bytes than the buffer has */
|
|
Bytes = min(Bytes, psurf->SurfObj.cjBits);
|
|
|
|
#if 0
|
|
/* FIXME: call DDI specific function here if available */
|
|
if (psurf->DDBitmap)
|
|
{
|
|
DPRINT("Calling device specific BitmapBits\n");
|
|
if (psurf->DDBitmap->funcs->pBitmapBits)
|
|
{
|
|
ret = psurf->DDBitmap->funcs->pBitmapBits(hBitmap,
|
|
(void *)Bits,
|
|
Bytes,
|
|
DDB_SET);
|
|
}
|
|
else
|
|
{
|
|
DPRINT("BitmapBits == NULL??\n");
|
|
ret = 0;
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
RtlCopyMemory(psurf->SurfObj.pvBits, Bits, Bytes);
|
|
ret = Bytes;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
LONG APIENTRY
|
|
NtGdiSetBitmapBits(
|
|
HBITMAP hBitmap,
|
|
DWORD Bytes,
|
|
IN PBYTE pUnsafeBits)
|
|
{
|
|
LONG ret;
|
|
PSURFACE psurf;
|
|
|
|
if (pUnsafeBits == NULL || Bytes == 0)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
psurf = SURFACE_LockSurface(hBitmap);
|
|
if (psurf == NULL)
|
|
{
|
|
SetLastWin32Error(ERROR_INVALID_HANDLE);
|
|
return 0;
|
|
}
|
|
|
|
_SEH2_TRY
|
|
{
|
|
ProbeForRead(pUnsafeBits, Bytes, 1);
|
|
ret = IntSetBitmapBits(psurf, Bytes, pUnsafeBits);
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
ret = 0;
|
|
}
|
|
_SEH2_END
|
|
|
|
SURFACE_UnlockSurface(psurf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
BOOL APIENTRY
|
|
NtGdiSetBitmapDimension(
|
|
HBITMAP hBitmap,
|
|
INT Width,
|
|
INT Height,
|
|
LPSIZE Size)
|
|
{
|
|
PSURFACE psurf;
|
|
BOOL Ret = TRUE;
|
|
|
|
if (hBitmap == NULL)
|
|
return FALSE;
|
|
|
|
psurf = SURFACE_LockSurface(hBitmap);
|
|
if (psurf == NULL)
|
|
{
|
|
SetLastWin32Error(ERROR_INVALID_HANDLE);
|
|
return FALSE;
|
|
}
|
|
|
|
if (Size)
|
|
{
|
|
_SEH2_TRY
|
|
{
|
|
ProbeForWrite(Size, sizeof(SIZE), 1);
|
|
*Size = psurf->dimension;
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
Ret = FALSE;
|
|
}
|
|
_SEH2_END
|
|
}
|
|
|
|
/* The dimension is changed even if writing the old value failed */
|
|
psurf->dimension.cx = Width;
|
|
psurf->dimension.cy = Height;
|
|
|
|
SURFACE_UnlockSurface(psurf);
|
|
|
|
return Ret;
|
|
}
|
|
|
|
VOID IntHandleSpecialColorType(HDC hDC, COLORREF* Color)
|
|
{
|
|
PDC pdc = NULL;
|
|
RGBQUAD quad;
|
|
PALETTEENTRY palEntry;
|
|
UINT index;
|
|
|
|
switch (*Color >> 24)
|
|
{
|
|
case 0x10: /* DIBINDEX */
|
|
if (IntGetDIBColorTable(hDC, LOWORD(*Color), 1, &quad) == 1)
|
|
{
|
|
*Color = RGB(quad.rgbRed, quad.rgbGreen, quad.rgbBlue);
|
|
}
|
|
else
|
|
{
|
|
/* Out of color table bounds - use black */
|
|
*Color = RGB(0, 0, 0);
|
|
}
|
|
break;
|
|
case 0x02: /* PALETTERGB */
|
|
pdc = DC_LockDc(hDC);
|
|
if (pdc->dclevel.hpal != NtGdiGetStockObject(DEFAULT_PALETTE))
|
|
{
|
|
index = NtGdiGetNearestPaletteIndex(pdc->dclevel.hpal, *Color);
|
|
IntGetPaletteEntries(pdc->dclevel.hpal, index, 1, &palEntry);
|
|
*Color = RGB(palEntry.peRed, palEntry.peGreen, palEntry.peBlue);
|
|
}
|
|
else
|
|
{
|
|
/* Use the pure color */
|
|
*Color = *Color & 0x00FFFFFF;
|
|
}
|
|
DC_UnlockDc(pdc);
|
|
break;
|
|
case 0x01: /* PALETTEINDEX */
|
|
pdc = DC_LockDc(hDC);
|
|
if (IntGetPaletteEntries(pdc->dclevel.hpal, LOWORD(*Color), 1, &palEntry) == 1)
|
|
{
|
|
*Color = RGB(palEntry.peRed, palEntry.peGreen, palEntry.peBlue);
|
|
}
|
|
else
|
|
{
|
|
/* Index does not exist, use zero index */
|
|
IntGetPaletteEntries(pdc->dclevel.hpal, 0, 1, &palEntry);
|
|
*Color = RGB(palEntry.peRed, palEntry.peGreen, palEntry.peBlue);
|
|
}
|
|
DC_UnlockDc(pdc);
|
|
break;
|
|
default:
|
|
DPRINT("Unsupported color type %d passed\n", *Color >> 24);
|
|
break;
|
|
}
|
|
}
|
|
|
|
BOOL APIENTRY
|
|
GdiSetPixelV(
|
|
HDC hDC,
|
|
INT X,
|
|
INT Y,
|
|
COLORREF Color)
|
|
{
|
|
HBRUSH hBrush;
|
|
HGDIOBJ OldBrush;
|
|
|
|
if ((Color & 0xFF000000) != 0)
|
|
{
|
|
IntHandleSpecialColorType(hDC, &Color);
|
|
}
|
|
|
|
hBrush = NtGdiCreateSolidBrush(Color, NULL);
|
|
if (hBrush == NULL)
|
|
return FALSE;
|
|
|
|
OldBrush = NtGdiSelectBrush(hDC, hBrush);
|
|
if (OldBrush == NULL)
|
|
{
|
|
GreDeleteObject(hBrush);
|
|
return FALSE;
|
|
}
|
|
|
|
NtGdiPatBlt(hDC, X, Y, 1, 1, PATCOPY);
|
|
NtGdiSelectBrush(hDC, OldBrush);
|
|
GreDeleteObject(hBrush);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
COLORREF APIENTRY
|
|
NtGdiSetPixel(
|
|
HDC hDC,
|
|
INT X,
|
|
INT Y,
|
|
COLORREF Color)
|
|
{
|
|
DPRINT("0 NtGdiSetPixel X %ld Y %ld C %ld\n", X, Y, Color);
|
|
|
|
if (GdiSetPixelV(hDC,X,Y,Color))
|
|
{
|
|
Color = NtGdiGetPixel(hDC,X,Y);
|
|
DPRINT("1 NtGdiSetPixel X %ld Y %ld C %ld\n", X, Y, Color);
|
|
return Color;
|
|
}
|
|
|
|
Color = (COLORREF)CLR_INVALID;
|
|
DPRINT("2 NtGdiSetPixel X %ld Y %ld C %ld\n", X, Y, Color);
|
|
return Color;
|
|
}
|
|
|
|
|
|
/* Internal Functions */
|
|
|
|
UINT FASTCALL
|
|
BITMAP_GetRealBitsPixel(UINT nBitsPixel)
|
|
{
|
|
if (nBitsPixel <= 1)
|
|
return 1;
|
|
if (nBitsPixel <= 4)
|
|
return 4;
|
|
if (nBitsPixel <= 8)
|
|
return 8;
|
|
if (nBitsPixel <= 16)
|
|
return 16;
|
|
if (nBitsPixel <= 24)
|
|
return 24;
|
|
if (nBitsPixel <= 32)
|
|
return 32;
|
|
|
|
return 0;
|
|
}
|
|
|
|
INT FASTCALL
|
|
BITMAP_GetWidthBytes(INT bmWidth, INT bpp)
|
|
{
|
|
#if 0
|
|
switch (bpp)
|
|
{
|
|
case 1:
|
|
return 2 * ((bmWidth+15) >> 4);
|
|
|
|
case 24:
|
|
bmWidth *= 3; /* fall through */
|
|
case 8:
|
|
return bmWidth + (bmWidth & 1);
|
|
|
|
case 32:
|
|
return bmWidth * 4;
|
|
|
|
case 16:
|
|
case 15:
|
|
return bmWidth * 2;
|
|
|
|
case 4:
|
|
return 2 * ((bmWidth+3) >> 2);
|
|
|
|
default:
|
|
DPRINT ("stub");
|
|
}
|
|
|
|
return -1;
|
|
#endif
|
|
|
|
return ((bmWidth * bpp + 15) & ~15) >> 3;
|
|
}
|
|
|
|
HBITMAP FASTCALL
|
|
BITMAP_CopyBitmap(HBITMAP hBitmap)
|
|
{
|
|
HBITMAP res;
|
|
BITMAP bm;
|
|
SURFACE *Bitmap, *resBitmap;
|
|
SIZEL Size;
|
|
|
|
if (hBitmap == NULL)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
Bitmap = GDIOBJ_LockObj(hBitmap, GDI_OBJECT_TYPE_BITMAP);
|
|
if (Bitmap == NULL)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
BITMAP_GetObject(Bitmap, sizeof(BITMAP), (PVOID)&bm);
|
|
bm.bmBits = NULL;
|
|
if (Bitmap->SurfObj.lDelta >= 0)
|
|
bm.bmHeight = -bm.bmHeight;
|
|
|
|
Size.cx = abs(bm.bmWidth);
|
|
Size.cy = abs(bm.bmHeight);
|
|
res = IntCreateBitmap(Size,
|
|
bm.bmWidthBytes,
|
|
BitmapFormat(bm.bmBitsPixel * bm.bmPlanes, BI_RGB),
|
|
(bm.bmHeight < 0 ? BMF_TOPDOWN : 0) | BMF_NOZEROINIT,
|
|
NULL);
|
|
|
|
if (res)
|
|
{
|
|
PBYTE buf;
|
|
|
|
resBitmap = GDIOBJ_LockObj(res, GDI_OBJECT_TYPE_BITMAP);
|
|
if (resBitmap)
|
|
{
|
|
buf = ExAllocatePoolWithTag(PagedPool,
|
|
bm.bmWidthBytes * abs(bm.bmHeight),
|
|
TAG_BITMAP);
|
|
if (buf == NULL)
|
|
{
|
|
GDIOBJ_UnlockObjByPtr((POBJ)resBitmap);
|
|
GDIOBJ_UnlockObjByPtr((POBJ)Bitmap);
|
|
GreDeleteObject(res);
|
|
return 0;
|
|
}
|
|
IntGetBitmapBits(Bitmap, bm.bmWidthBytes * abs(bm.bmHeight), buf);
|
|
IntSetBitmapBits(resBitmap, bm.bmWidthBytes * abs(bm.bmHeight), buf);
|
|
ExFreePoolWithTag(buf,TAG_BITMAP);
|
|
resBitmap->flFlags = Bitmap->flFlags;
|
|
GDIOBJ_UnlockObjByPtr((POBJ)resBitmap);
|
|
}
|
|
else
|
|
{
|
|
GreDeleteObject(res);
|
|
res = NULL;
|
|
}
|
|
}
|
|
|
|
GDIOBJ_UnlockObjByPtr((POBJ)Bitmap);
|
|
|
|
return res;
|
|
}
|
|
|
|
INT APIENTRY
|
|
BITMAP_GetObject(SURFACE *psurf, INT Count, LPVOID buffer)
|
|
{
|
|
PBITMAP pBitmap;
|
|
|
|
if (!buffer) return sizeof(BITMAP);
|
|
if ((UINT)Count < sizeof(BITMAP)) return 0;
|
|
|
|
/* always fill a basic BITMAP structure */
|
|
pBitmap = buffer;
|
|
pBitmap->bmType = 0;
|
|
pBitmap->bmWidth = psurf->SurfObj.sizlBitmap.cx;
|
|
pBitmap->bmHeight = psurf->SurfObj.sizlBitmap.cy;
|
|
pBitmap->bmWidthBytes = abs(psurf->SurfObj.lDelta);
|
|
pBitmap->bmPlanes = 1;
|
|
pBitmap->bmBitsPixel = BitsPerFormat(psurf->SurfObj.iBitmapFormat);
|
|
|
|
/* Check for DIB section */
|
|
if (psurf->hSecure)
|
|
{
|
|
/* Set bmBits in this case */
|
|
pBitmap->bmBits = psurf->SurfObj.pvBits;
|
|
|
|
if (Count >= sizeof(DIBSECTION))
|
|
{
|
|
/* Fill rest of DIBSECTION */
|
|
PDIBSECTION pds = buffer;
|
|
|
|
pds->dsBmih.biSize = sizeof(BITMAPINFOHEADER);
|
|
pds->dsBmih.biWidth = pds->dsBm.bmWidth;
|
|
pds->dsBmih.biHeight = pds->dsBm.bmHeight;
|
|
pds->dsBmih.biPlanes = pds->dsBm.bmPlanes;
|
|
pds->dsBmih.biBitCount = pds->dsBm.bmBitsPixel;
|
|
switch (psurf->SurfObj.iBitmapFormat)
|
|
{
|
|
/* FIXME: What about BI_BITFIELDS? */
|
|
case BMF_1BPP:
|
|
case BMF_4BPP:
|
|
case BMF_8BPP:
|
|
case BMF_16BPP:
|
|
case BMF_24BPP:
|
|
case BMF_32BPP:
|
|
pds->dsBmih.biCompression = BI_RGB;
|
|
break;
|
|
case BMF_4RLE:
|
|
pds->dsBmih.biCompression = BI_RLE4;
|
|
break;
|
|
case BMF_8RLE:
|
|
pds->dsBmih.biCompression = BI_RLE8;
|
|
break;
|
|
case BMF_JPEG:
|
|
pds->dsBmih.biCompression = BI_JPEG;
|
|
break;
|
|
case BMF_PNG:
|
|
pds->dsBmih.biCompression = BI_PNG;
|
|
break;
|
|
}
|
|
pds->dsBmih.biSizeImage = psurf->SurfObj.cjBits;
|
|
pds->dsBmih.biXPelsPerMeter = 0;
|
|
pds->dsBmih.biYPelsPerMeter = 0;
|
|
pds->dsBmih.biClrUsed = psurf->biClrUsed;
|
|
pds->dsBmih.biClrImportant = psurf->biClrImportant;
|
|
pds->dsBitfields[0] = psurf->dsBitfields[0];
|
|
pds->dsBitfields[1] = psurf->dsBitfields[1];
|
|
pds->dsBitfields[2] = psurf->dsBitfields[2];
|
|
pds->dshSection = psurf->hDIBSection;
|
|
pds->dsOffset = psurf->dwOffset;
|
|
|
|
return sizeof(DIBSECTION);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* not set according to wine test, confirmed in win2k */
|
|
pBitmap->bmBits = NULL;
|
|
}
|
|
|
|
return sizeof(BITMAP);
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
HDC
|
|
APIENTRY
|
|
NtGdiGetDCforBitmap(
|
|
IN HBITMAP hsurf)
|
|
{
|
|
HDC hDC = NULL;
|
|
PSURFACE psurf = SURFACE_LockSurface(hsurf);
|
|
if (psurf)
|
|
{
|
|
hDC = psurf->hDC;
|
|
SURFACE_UnlockSurface(psurf);
|
|
}
|
|
return hDC;
|
|
}
|
|
|
|
/* EOF */
|