306 lines
8.4 KiB
C++
306 lines
8.4 KiB
C++
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/*
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** CUTILS.C
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**
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** Common utilities for common controls
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**
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*/
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#include "ctlspriv.h"
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#include <shfusion.h>
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#define ARGB(a,r,g,b) ((COLORREF)(( \
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((BYTE)(r)) | \
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((WORD) ((BYTE)(g))<< 8)) | \
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(((DWORD)((BYTE)(b))<<16)) | \
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(((DWORD)((BYTE)(a))<<24))))
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#define PREMULTIPLY(c, alpha) ((( ((c) * (alpha)) + 128) >> 8) + 1)
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typedef struct tagCCBUFFER
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{
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HDC hdc;
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HBITMAP hbmp;
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HBITMAP hbmpOld;
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RGBQUAD* prgb;
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} CCBUFFER;
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BOOL Buffer_CreateBuffer(HDC hdc, int cx, int cy, CCBUFFER* pbuf)
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{
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BOOL fRet = FALSE;
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BITMAPINFO bi = {0};
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bi.bmiHeader.biSize = sizeof(bi.bmiHeader);
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bi.bmiHeader.biWidth = cx;
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bi.bmiHeader.biHeight = cy;
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bi.bmiHeader.biPlanes = 1;
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bi.bmiHeader.biBitCount = 32;
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bi.bmiHeader.biCompression = BI_RGB;
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pbuf->hdc = CreateCompatibleDC(hdc);
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if (pbuf->hdc)
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{
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pbuf->hbmp = CreateDIBSection(pbuf->hdc, &bi, DIB_RGB_COLORS, (VOID**)&pbuf->prgb, NULL, 0);
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if (!pbuf->hbmp)
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{
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DeleteDC(pbuf->hdc);
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ZeroMemory(pbuf, sizeof(CCBUFFER));
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}
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else
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{
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pbuf->hbmpOld = (HBITMAP)SelectObject(pbuf->hdc, pbuf->hbmp);
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fRet = TRUE;
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}
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}
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return fRet;
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}
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void Buffer_DestroyBuffer(CCBUFFER* pbuf)
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{
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if (pbuf->hdc)
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{
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SelectObject(pbuf->hdc, pbuf->hbmpOld);
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DeleteDC(pbuf->hdc);
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DeleteObject(pbuf->hbmp);
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}
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}
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void BlurBitmapNormal(ULONG* prgb, int cx, int cy, COLORREF crFill)
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{
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BYTE r = GetRValue(crFill);
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BYTE g = GetGValue(crFill);
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BYTE b = GetBValue(crFill);
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int cxMax = cx - 5;
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int cyMax = cy - 5;
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int iOffset;
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int y;
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for (y=0, iOffset = 0; y < cy; y++, iOffset += cx)
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{
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ULONG* p = &prgb[iOffset];
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int Accum = ((*p)) +
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((*(p + 1))) +
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((*(p + 2))) +
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((*(p + 3)));
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for (int x=0; x< cxMax; x++)
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{
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Accum = Accum - ((*p)) + ((*(p + 4)));
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*p++ = (Accum >> 2);
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}
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}
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int cx2 = cx << 1;
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int cx3 = cx + cx + cx;
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int cx4 = cx << 2;
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for (iOffset = 0, y=0; y < cyMax; y++, iOffset += cx)
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{
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ULONG* p = &prgb[iOffset];
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for (int x=0; x < cx; x++)
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{
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DWORD Alpha = (((*p) ) +
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(*(p + cx) ) +
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(*(p + cx2) ) +
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(*(p + cx3) ) +
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(*(p + cx4) )) >> 2;
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if (Alpha > 255)
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Alpha = 255;
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*p = (ULONG)ARGB(Alpha, PREMULTIPLY(r, Alpha), PREMULTIPLY(g, Alpha), PREMULTIPLY(b, Alpha));
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p++;
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}
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}
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}
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#ifdef _X86_
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QWORD qw128 = 0x0000008000800080;
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QWORD qw1 = 0x0000000100010001;
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void BlurBitmapMMX(ULONG* prgb, int cx, int cy, COLORREF crFill)
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{
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RGBQUAD rgbFill; // ColorRef is opposite of RGBQUAD
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rgbFill.rgbRed = GetRValue(crFill);
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rgbFill.rgbGreen = GetGValue(crFill);
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rgbFill.rgbBlue = GetBValue(crFill);
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int cxMax = cx - 5;
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int cyMax = cy - 5;
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int iOffset;
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int y;
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for (y=0, iOffset = 0; y < cy; y++, iOffset += cx)
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{
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ULONG* p = &prgb[iOffset];
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int Accum = ((*p)) +
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((*(p + 1))) +
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((*(p + 2))) +
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((*(p + 3)));
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for (int x=0; x< cxMax; x++)
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{
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Accum = Accum - ((*p)) + ((*(p + 4)));
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*p++ = (Accum >> 2);
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}
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}
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int cx2 = cx << 1;
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int cx3 = cx + cx + cx;
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int cx4 = cx << 2;
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_asm
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{
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pxor mm0, mm0
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pxor mm1, mm1
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pxor mm5, mm5
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movd mm4, dword ptr [rgbFill]
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movq mm6, qw128 // mm6 is filled with 128
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movq mm7, qw1 // mm7 is filled with 1
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}
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for (iOffset = 0, y=0; y < cyMax; y++, iOffset += cx)
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{
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ULONG* p = &prgb[iOffset];
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for (int x=0; x < cx; x++)
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{
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DWORD Alpha = (((*p) ) +
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(*(p + cx) ) +
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(*(p + cx2) ) +
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(*(p + cx3) ) +
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(*(p + cx4) )) >> 2;
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if (Alpha > 255)
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Alpha = 255;
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*p = ((BYTE)Alpha);
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_asm
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{
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mov edx, dword ptr [p]
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mov ebx, dword ptr [edx]
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mov eax, ebx // a -> b
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or eax, eax
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jz EarlyOut
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shl ebx, 8 // b << 8
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or eax, ebx // a |= b
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shl ebx, 8 // b << 8
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or eax, ebx // a |= b
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shl ebx, 8 // b << 8
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// Note high byte of alpha is zero.
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movd mm0, eax // a -> mm0
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movq mm1, mm4 // Load the pixel
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punpcklbw mm0,mm5 // mm0 -> Expands <- mm0 Contains the Alpha channel for this multiply
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punpcklbw mm1, mm5 // Unpack the pixel
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pmullw mm1, mm0 // Multiply by the alpha channel <- mm1 contains c * alpha
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paddusw mm1, mm6 // perform the (c * alpha) + 128
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psrlw mm1, 8 // Divide by 255
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paddusw mm1, mm7 // Add 1 to finish the divide by 255
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packuswb mm1, mm5
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movd eax, mm1
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or eax, ebx // Transfer alpha channel
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EarlyOut:
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mov dword ptr [edx], eax
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}
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p++;
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}
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}
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_asm emms
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}
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void BlurBitmap(ULONG* plBitmapBits, int cx, int cy, COLORREF crFill)
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{
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if (IsProcessorFeaturePresent(PF_MMX_INSTRUCTIONS_AVAILABLE))
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BlurBitmapMMX(plBitmapBits, cx, cy, crFill);
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else
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BlurBitmapNormal(plBitmapBits, cx, cy, crFill);
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}
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#else
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void BlurBitmap(ULONG* plBitmapBits, int cx, int cy, COLORREF crFill)
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{
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BlurBitmapNormal(plBitmapBits, cx, cy, crFill);
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}
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#endif
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int DrawShadowText(HDC hdc, LPCTSTR pszText, UINT cch, RECT* prc, DWORD dwFlags, COLORREF crText,
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COLORREF crShadow, int ixOffset, int iyOffset)
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{
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int iRet = -1;
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if (dwFlags & DT_CALCRECT)
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{
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iRet = DrawText(hdc, pszText, cch, prc, dwFlags | DT_CALCRECT);
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}
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else
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{
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if (GetLayout(hdc) == LAYOUT_RTL)
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{
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COLORREF crTextSave = SetTextColor(hdc, crShadow);
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int iMode = SetBkMode(hdc, TRANSPARENT);
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RECT rc = *prc;
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OffsetRect(&rc, ixOffset, iyOffset);
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DrawText(hdc, pszText, cch, &rc, dwFlags);
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SetBkMode(hdc, iMode);
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SetTextColor(hdc, crTextSave);
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}
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else
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{
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RECT rc = *prc;
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CCBUFFER buf;
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int cx = RECTWIDTH(rc) + 10;
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int cy = RECTHEIGHT(rc) + 10;
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if (Buffer_CreateBuffer(hdc, cx, cy, &buf))
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{
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OffsetRect(&rc, 5, 5);
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RECT rcMem = {5, 5, RECTWIDTH(rc) + 5, RECTHEIGHT(rc) + 5};
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HFONT hFontOldhdc = (HFONT)SelectObject(hdc, GetStockObject(SYSTEM_FONT));
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HFONT hFontOldhdcMem = (HFONT)SelectObject(buf.hdc, hFontOldhdc);
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SetTextColor(buf.hdc, crText);
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SetBkColor(buf.hdc, crShadow);
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SetBkMode(buf.hdc, TRANSPARENT);
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DrawText(buf.hdc, pszText, cch, &rcMem, dwFlags);
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int Total = cx * cy;
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for (int z = 0; z < Total; z++)
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{
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if (((PULONG)buf.prgb)[z] != 0)
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((PULONG)buf.prgb)[z] = 0x000000ff;
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}
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BlurBitmap((ULONG*)buf.prgb, cx, cy, crShadow);
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BLENDFUNCTION bf = {0};
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bf.BlendOp = AC_SRC_OVER;
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bf.SourceConstantAlpha = 255;
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bf.AlphaFormat = AC_SRC_ALPHA;
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GdiAlphaBlend(hdc, prc->left - 4 + ixOffset, prc->top - 8 + iyOffset, cx, cy, buf.hdc, 0, 0, cx, cy, bf);
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SelectObject(buf.hdc, hFontOldhdcMem);
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SelectObject(hdc, hFontOldhdc);
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Buffer_DestroyBuffer(&buf);
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}
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}
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int iMode = SetBkMode(hdc, TRANSPARENT);
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COLORREF crTextSave = SetTextColor(hdc, crText);
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iRet = DrawText(hdc, pszText, cch, prc, dwFlags);
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SetTextColor(hdc, crTextSave);
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SetBkMode(hdc, iMode);
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}
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return iRet;
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}
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