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CG32bitImage.cpp
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// CG32bitImage.cpp
//
// CG32bitImage Class
// Copyright (c) 2015 by Kronosaur Productions, LLC. All Rights Reserved.
#include "PreComp.h"
#include "PixelMacros.h"
#define SMALL_SQUARE_SIZE 2
#define MEDIUM_SQUARE_SIZE 4
CG32bitImage CG32bitImage::m_NullImage;
CG32bitImage::CG32bitImage (void) :
m_pRGBA(NULL),
m_bFreeRGBA(false),
m_bMarked(false),
m_iPitch(0),
m_AlphaType(alphaNone),
m_pBMI(NULL)
// CG32bitImage constructor
{
}
CG32bitImage::CG32bitImage (const CG32bitImage &Src)
// CG32bitImage constructor
{
Copy(Src);
}
CG32bitImage::~CG32bitImage (void)
// CG32bitImage destructor
{
CleanUp();
}
CG32bitImage &CG32bitImage::operator= (const CG32bitImage &Src)
// CG32bitImage operator =
{
CleanUp();
Copy(Src);
return *this;
}
void CG32bitImage::BltToDC (HDC hDC, int x, int y) const
// BltToDC
//
// Blt the surface to a DC
{
// Initialize a bitmap info structure
if (m_pBMI == NULL)
InitBMI(&m_pBMI);
// Blt
::SetDIBitsToDevice(hDC,
x,
y,
m_cxWidth,
m_cyHeight,
0,
0,
0,
m_cyHeight,
m_pRGBA,
m_pBMI,
DIB_RGB_COLORS);
}
void CG32bitImage::BltToSurface (LPDIRECTDRAWSURFACE7 pSurface, SurfaceTypes iType)
// BltToSurface
//
// Blts to a DX surface
{
if (IsEmpty())
return;
DDSURFACEDESC2 desc;
// Lock the surface
if (!::SurfaceLock(pSurface, &desc))
return;
// Calculate some metrics
int iLinesToBlt = min(m_cyHeight, (int)desc.dwHeight);
int iPixelSize = ((iType == r8g8b8) ? sizeof(DWORD) : sizeof(WORD));
int iDWORDsPerLine = AlignUp(min(m_cxWidth, (int)desc.dwWidth) * iPixelSize / sizeof(DWORD), sizeof(DWORD));
int iSourcePitch = m_iPitch / sizeof(DWORD);
int iDestPitch = desc.lPitch / sizeof(DWORD);
// Blt the bitmap
DWORD *pDestLine = (DWORD *)desc.lpSurface;
CG32bitPixel *pSourceLine = m_pRGBA;
// Handle both 16-bit bit patterns
if (iType == r5g5b5)
{
for (int i = 0; i < iLinesToBlt; i++)
{
CG32bitPixel *pSource = pSourceLine;
DWORD *pDest = pDestLine;
DWORD *pDestEnd = pDestLine + iDWORDsPerLine;
while (pDest < pDestEnd)
{
DWORD dwData1 = pSource->AsR5G5B5();
pSource++;
DWORD dwData2 = pSource->AsR5G5B5();
pSource++;
*pDest++ = (dwData2 << 16) | dwData1;
}
pSourceLine += iSourcePitch;
pDestLine += iDestPitch;
}
}
else if (iType == r5g6b5)
{
for (int i = 0; i < iLinesToBlt; i++)
{
CG32bitPixel *pSource = pSourceLine;
DWORD *pDest = pDestLine;
DWORD *pDestEnd = pDestLine + iDWORDsPerLine;
while (pDest < pDestEnd)
{
DWORD dwData1 = pSource->AsR5G6B5();
pSource++;
DWORD dwData2 = pSource->AsR5G6B5();
pSource++;
*pDest++ = (dwData2 << 16) | dwData1;
}
pSourceLine += iSourcePitch;
pDestLine += iDestPitch;
}
}
else if (iType == r8g8b8)
{
for (int i = 0; i < iLinesToBlt; i++)
{
CG32bitPixel *pSource = pSourceLine;
DWORD *pDest = pDestLine;
DWORD *pDestEnd = pDestLine + iDWORDsPerLine;
while (pDest < pDestEnd)
{
*pDest++ = pSource->AsR8G8B8();
pSource++;
}
pSourceLine += iSourcePitch;
pDestLine += iDestPitch;
}
}
// Done
SurfaceUnlock(pSurface);
}
void CG32bitImage::CleanUp (void)
// CleanUp
//
// Clean up the bitmap
{
if (m_pRGBA && m_bFreeRGBA)
delete [] m_pRGBA;
m_pRGBA = NULL;
m_cxWidth = 0;
m_cyHeight = 0;
m_iPitch = 0;
m_AlphaType = alphaNone;
ResetClipRect();
if (m_pBMI)
{
delete [] (BYTE *)m_pBMI;
m_pBMI = NULL;
}
}
void CG32bitImage::Copy (const CG32bitImage &Src)
// Copy
//
// Copy from source. We assume that we are already clean.
{
if (Src.IsEmpty())
return;
// Copy the buffer
int iSize = CalcBufferSize(Src.m_iPitch / sizeof(DWORD), Src.m_cyHeight);
m_pRGBA = new CG32bitPixel [iSize];
m_bFreeRGBA = true;
m_bMarked = Src.m_bMarked;
CG32bitPixel *pSrc = Src.m_pRGBA;
CG32bitPixel *pSrcEnd = pSrc + iSize;
CG32bitPixel *pDest = m_pRGBA;
while (pSrc < pSrcEnd)
*pDest++ = *pSrc++;
// Now copy the remaining variable
m_cxWidth = Src.m_cxWidth;
m_cyHeight = Src.m_cyHeight;
m_iPitch = Src.m_iPitch;
m_AlphaType = Src.m_AlphaType;
m_rcClip = Src.m_rcClip;
m_pBMI = NULL;
}
bool CG32bitImage::CopyToClipboard (void)
// CopyToClipboard
//
// Copies to the clipboard
{
// Create an HBITMAP
HWND hDesktopWnd = ::GetDesktopWindow();
HDC hDesktopDC = ::GetDC(hDesktopWnd);
HDC hDC = ::CreateCompatibleDC(hDesktopDC);
HBITMAP hBitmap = ::CreateCompatibleBitmap(hDesktopDC, m_cxWidth, m_cyHeight);
HBITMAP hOldBitmap = (HBITMAP)::SelectObject(hDC, hBitmap);
BltToDC(hDC, 0, 0);
::SelectObject(hDC, hOldBitmap);
::DeleteDC(hDC);
::ReleaseDC(hDesktopWnd, hDesktopDC);
// Copy to the clipboard
if (!::OpenClipboard(NULL))
return false;
if (!::EmptyClipboard())
{
::CloseClipboard();
return false;
}
if (!::SetClipboardData(CF_BITMAP, hBitmap))
{
::CloseClipboard();
return false;
}
if (!::CloseClipboard())
return false;
return true;
}
void CG32bitImage::CopyTransformed (const RECT &rcDest, const CG32bitImage &Src, const RECT &rcSrc, const CXForm &SrcToDest, const CXForm &DestToSrc, const RECT &rcDestXForm)
// CopyTransformed
//
// Blts the source to the destination. All transformations are from the
// center of the source.
{
int xDest = rcDest.left;
int yDest = rcDest.top;
int cxDest = RectWidth(rcDest);
int cyDest = RectHeight(rcDest);
int xSrc = rcSrc.left;
int ySrc = rcSrc.top;
int cxSrc = RectWidth(rcSrc);
int cySrc = RectHeight(rcSrc);
int xSrcEnd = xSrc + cxSrc;
int ySrcEnd = ySrc + cySrc;
// Compute vectors that move us by 1 pixel
CVector vOrigin = DestToSrc.Transform(CVector(0.0, 0.0));
CVector vIncX = DestToSrc.Transform(CVector(1.0, 0.0)) - vOrigin;
CVector vIncY = DestToSrc.Transform(CVector(0.0, 1.0)) - vOrigin;
int iRowHeight = Src.GetPixelPos(0, 1) - Src.GetPixelPos(0, 0);
// Loop over every pixel in the destination
CVector vSrcRow = DestToSrc.Transform(CVector(rcDestXForm.left, rcDestXForm.top));
CG32bitPixel *pDestRow = GetPixelPos(xDest, yDest);
CG32bitPixel *pDestRowEnd = GetPixelPos(xDest, yDest + cyDest);
while (pDestRow < pDestRowEnd)
{
CVector vSrcPos = vSrcRow;
CG32bitPixel *pDestPos = pDestRow;
CG32bitPixel *pDestPosEnd = pDestRow + cxDest;
while (pDestPos < pDestPosEnd)
{
int xSrcPos = (int)vSrcPos.GetX();
int ySrcPos = (int)vSrcPos.GetY();
if (xSrcPos >= xSrc && xSrcPos + 1 < xSrcEnd
&& ySrcPos >= ySrc && ySrcPos + 1 < ySrcEnd)
{
CG32bitPixel *pSrcPos = Src.GetPixelPos(xSrcPos, ySrcPos);
BYTE byAlpha = pSrcPos->GetAlpha();
if (byAlpha == 0x00)
*pDestPos = CG32bitPixel::Null();
else
INTERPOLATE_COPY32(pSrcPos, iRowHeight, vSrcPos, xSrcPos, ySrcPos, byAlpha, *pDestPos);
}
else
*pDestPos = CG32bitPixel::Null();
// Next
vSrcPos = vSrcPos + vIncX;
pDestPos++;
}
// Next row
vSrcRow = vSrcRow + vIncY;
pDestRow = NextRow(pDestRow);
}
}
bool CG32bitImage::Create (int cxWidth, int cyHeight, EAlphaTypes AlphaType, CG32bitPixel InitialValue)
// Create
//
// Creates a blank image
{
CleanUp();
if (cxWidth <= 0 || cyHeight <= 0)
return false;
// Allocate a new buffer
m_iPitch = cxWidth * sizeof(DWORD);
int iSize = CalcBufferSize(m_iPitch / sizeof(DWORD), cyHeight);
m_pRGBA = new CG32bitPixel [iSize];
m_bFreeRGBA = true;
// Initialize
CG32bitPixel *pDest = m_pRGBA;
CG32bitPixel *pDestEnd = pDest + iSize;
while (pDest < pDestEnd)
*pDest++ = InitialValue;
// Other variables
m_cxWidth = cxWidth;
m_cyHeight = cyHeight;
m_AlphaType = AlphaType;
ResetClipRect();
return true;
}
bool CG32bitImage::CreateFromBitmap (HBITMAP hImage, HBITMAP hMask, EBitmapTypes iMaskType, DWORD dwFlags)
// CreateFromBitmap
//
// Creates from an image and (optional) mask
{
try
{
CleanUp();
// Get properties of the image
int cxImageWidth = 0;
int cyImageHeight = 0;
void *pImageBase = NULL;
int iImageStride;
if (hImage)
{
if (dibGetInfo(hImage, &cxImageWidth, &cyImageHeight, &pImageBase, &iImageStride) != NOERROR)
return false;
}
int cxMaskWidth = 0;
int cyMaskHeight = 0;
void *pMaskBase = NULL;
int iMaskStride;
if (hMask)
{
if (dibGetInfo(hMask, &cxMaskWidth, &cyMaskHeight, &pMaskBase, &iMaskStride) != NOERROR)
return false;
}
// Figure out the dimensions of the resulting image
int cxWidth;
int cyHeight;
if (hImage)
{
cxWidth = cxImageWidth;
cyHeight = cyImageHeight;
// If we also have a mask, it better be at least as big
if (hMask)
{
if (cxImageWidth > cxMaskWidth
|| cyImageHeight > cyMaskHeight)
return false;
}
}
else if (hMask)
{
cxWidth = cxMaskWidth;
cyHeight = cyMaskHeight;
}
else
return false;
// Do we have an 8-bit mask?
bool bHas8BitMask = (iMaskType == bitmapAlpha || iMaskType == bitmapRGB);
// Allocate the image
m_iPitch = cxWidth * sizeof(DWORD);
int iSize = CalcBufferSize(m_iPitch / sizeof(DWORD), cyHeight);
m_pRGBA = new CG32bitPixel [iSize];
m_bFreeRGBA = true;
m_cxWidth = cxWidth;
m_cyHeight = cyHeight;
ResetClipRect();
// Load the image. If we don't have an image, then initialize to 0.
if (hImage == NULL)
{
CG32bitPixel InitialValue(0);
CG32bitPixel *pDest = m_pRGBA;
CG32bitPixel *pDestEnd = pDest + iSize;
while (pDest < pDestEnd)
*pDest++ = InitialValue;
}
// If 16-bit image, load it
else if (dibIs16bit(hImage))
{
CG32bitPixel *pDestRow = m_pRGBA;
CG32bitPixel *pDestRowEnd = pDestRow + iSize;
WORD *pSrcRow = (WORD *)pImageBase;
while (pDestRow < pDestRowEnd)
{
CG32bitPixel *pDest = pDestRow;
CG32bitPixel *pDestEnd = pDest + cxWidth;
WORD *pSrc = pSrcRow;
while (pDest < pDestEnd)
{
BYTE byRed = (BYTE)CG16bitImage::RedValue(*pSrc);
BYTE byGreen = (BYTE)CG16bitImage::GreenValue(*pSrc);
BYTE byBlue = (BYTE)CG16bitImage::BlueValue(*pSrc);
*pDest = CG32bitPixel(byRed, byGreen, byBlue);
pDest++;
pSrc++;
}
pDestRow = NextRow(pDestRow);
pSrcRow = (WORD *)(((char *)pSrcRow) + iImageStride);
}
}
// If 24-bit image
else if (dibIs24bit(hImage))
{
CG32bitPixel *pDestRow = m_pRGBA;
CG32bitPixel *pDestRowEnd = pDestRow + iSize;
BYTE *pSrcRow = (BYTE *)pImageBase;
while (pDestRow < pDestRowEnd)
{
CG32bitPixel *pDest = pDestRow;
CG32bitPixel *pDestEnd = pDest + cxWidth;
BYTE *pSrc = pSrcRow;
while (pDest < pDestEnd)
{
BYTE byBlue = *pSrc++;
BYTE byGreen = *pSrc++;
BYTE byRed = *pSrc++;
*pDest++ = CG32bitPixel(byRed, byGreen, byBlue);
}
pDestRow = NextRow(pDestRow);
pSrcRow += iImageStride;
}
}
// Otherwise, we don't know
else
{
ASSERT(false);
return false;
}
// Now load the mask. If no mask, then we're done
if (hMask == NULL)
m_AlphaType = alphaNone;
// 16-bit mask
else if (dibIs16bit(hMask))
{
// Handle pre-multiplication
if ((dwFlags & FLAG_PRE_MULT_ALPHA) && bHas8BitMask)
{
CG32bitPixel *pDestRow = m_pRGBA;
CG32bitPixel *pDestRowEnd = pDestRow + iSize;
WORD *pSrcRow = (WORD *)pMaskBase;
while (pDestRow < pDestRowEnd)
{
CG32bitPixel *pDest = pDestRow;
CG32bitPixel *pDestEnd = pDest + cxWidth;
WORD *pSrc = pSrcRow;
while (pDest < pDestEnd)
{
BYTE byAlpha = (BYTE)CG16bitImage::GreenValue(*pSrc);
BYTE *pAlpha = CG32bitPixel::AlphaTable(byAlpha);
BYTE byRed = pAlpha[pDest->GetRed()];
BYTE byGreen = pAlpha[pDest->GetGreen()];
BYTE byBlue = pAlpha[pDest->GetBlue()];
*pDest++ = CG32bitPixel(byRed, byGreen, byBlue, byAlpha);
pDest++;
pSrc++;
}
pDestRow = NextRow(pDestRow);
pSrcRow = (WORD *)(((char *)pSrcRow) + iMaskStride);
}
m_AlphaType = alpha8;
}
// Otherwise, copy the mask
else
{
CG32bitPixel *pDestRow = m_pRGBA;
CG32bitPixel *pDestRowEnd = pDestRow + iSize;
WORD *pSrcRow = (WORD *)pMaskBase;
while (pDestRow < pDestRowEnd)
{
CG32bitPixel *pDest = pDestRow;
CG32bitPixel *pDestEnd = pDest + cxWidth;
WORD *pSrc = pSrcRow;
while (pDest < pDestEnd)
{
pDest->SetAlpha((BYTE)CG16bitImage::GreenValue(*pSrc));
pDest++;
pSrc++;
}
pDestRow = NextRow(pDestRow);
pSrcRow = (WORD *)(((char *)pSrcRow) + iMaskStride);
}
m_AlphaType = (bHas8BitMask ? alpha8 : alpha1);
}
}
// 24-bit mask
else if (dibIs24bit(hMask))
{
// Handle pre-multiplication
if ((dwFlags & FLAG_PRE_MULT_ALPHA) && bHas8BitMask)
{
CG32bitPixel *pDestRow = m_pRGBA;
CG32bitPixel *pDestRowEnd = pDestRow + iSize;
BYTE *pSrcRow = (BYTE *)pMaskBase;
while (pDestRow < pDestRowEnd)
{
CG32bitPixel *pDest = pDestRow;
CG32bitPixel *pDestEnd = pDest + cxWidth;
BYTE *pSrc = pSrcRow;
while (pDest < pDestEnd)
{
BYTE byAlpha = *pSrc;
BYTE *pAlpha = CG32bitPixel::AlphaTable(byAlpha);
BYTE byRed = pAlpha[pDest->GetRed()];
BYTE byGreen = pAlpha[pDest->GetGreen()];
BYTE byBlue = pAlpha[pDest->GetBlue()];
*pDest++ = CG32bitPixel(byRed, byGreen, byBlue, byAlpha);
pSrc += 3;
}
pDestRow = NextRow(pDestRow);
pSrcRow += iMaskStride;
}
m_AlphaType = alpha8;
}
// Otherwise, copy the mask
else
{
CG32bitPixel *pDestRow = m_pRGBA;
CG32bitPixel *pDestRowEnd = pDestRow + iSize;
BYTE *pSrcRow = (BYTE *)pMaskBase;
while (pDestRow < pDestRowEnd)
{
CG32bitPixel *pDest = pDestRow;
CG32bitPixel *pDestEnd = pDest + cxWidth;
BYTE *pSrc = pSrcRow;
while (pDest < pDestEnd)
{
BYTE byRed = *pSrc++;
BYTE byGreen = *pSrc++;
BYTE byBlue = *pSrc++;
pDest->SetAlpha(byGreen);
pDest++;
}
pDestRow = NextRow(pDestRow);
pSrcRow += iMaskStride;
}
m_AlphaType = (bHas8BitMask ? alpha8 : alpha1);
}
}
return true;
}
catch (...)
{
::kernelDebugLogPattern("Crash in CG32bitImage::CreateFromBitmap.");
return false;
}
}
bool CG32bitImage::CreateFromExternalBuffer (void *pBuffer, int cxWidth, int cyHeight, int iPitch, EAlphaTypes AlphaType)
// CreateFromExternalBuffer
//
// Creates from an external buffer which we do not control. Callers are
// responsible for lifetime management.
{
CleanUp();
if (cxWidth <= 0 || cyHeight <= 0)
return false;
// Allocate a new buffer
m_iPitch = iPitch;
m_pRGBA = (CG32bitPixel *)pBuffer;
m_bFreeRGBA = false;
// Other variables
m_cxWidth = cxWidth;
m_cyHeight = cyHeight;
m_AlphaType = AlphaType;
ResetClipRect();
return true;
}
bool CG32bitImage::CreateFromFile (const CString &sImageFilespec, const CString &sMaskFilespec, DWORD dwFlags)
// CreateFromFile
//
// Loads a BMP or JPEG into this image
{
try
{
// Load the image (which must exist).
HBITMAP hImage;
EBitmapTypes iImageType;
if (!dxLoadImageFile(sImageFilespec, &hImage, &iImageType)
|| iImageType == bitmapNone)
return false;
// Load the (optional) mask
//
// NOTE: This returns TRUE even if sMaskFilespec is blank. It just sets
// iMaskType to bitmapNone.
HBITMAP hMask;
EBitmapTypes iMaskType;
if (!dxLoadImageFile(sMaskFilespec, &hMask, &iMaskType))
{
::DeleteObject(hImage);
return false;
}
// Create from bitmaps
bool bSuccess = CreateFromBitmap(hImage, hMask, iMaskType, dwFlags);
// Either way, we're done with our bitmaps
::DeleteObject(hImage);
if (hMask)
::DeleteObject(hMask);
// Done
return bSuccess;
}
catch (...)
{
::kernelDebugLogPattern("Crash loading image: %s.", sImageFilespec);
return false;
}
}
bool CG32bitImage::CreateFromImageTransformed (const CG32bitImage &Source, int xSrc, int ySrc, int cxSrc, int cySrc, Metric rScaleX, Metric rScaleY, Metric rRotation)
// CreateFromImageTransformed
//
// Creates a new image from the source after a transformation.
{
CleanUp();
// Get some metrics
CXForm SrcToDest;
CXForm DestToSrc;
RECT rcDestXForm;
if (!CalcBltTransform(0.0, 0.0, rScaleX, rScaleY, rRotation, xSrc, ySrc, cxSrc, cySrc, &SrcToDest, &DestToSrc, &rcDestXForm))
{
return true;
}
// Set some rects
RECT rcSrc;
rcSrc.left = xSrc;
rcSrc.top = ySrc;
rcSrc.right = xSrc + cxSrc;
rcSrc.bottom = ySrc + cySrc;
RECT rcDest;
rcDest.left = 0;
rcDest.top = 0;
rcDest.right = RectWidth(rcDestXForm);
rcDest.bottom = RectHeight(rcDestXForm);
// Create the destination image (no need to initialize, since we will copy
// over it).
m_cxWidth = RectWidth(rcDest);
m_cyHeight = RectHeight(rcDest);
m_iPitch = m_cxWidth * sizeof(DWORD);
int iSize = CalcBufferSize(m_iPitch / sizeof(DWORD), m_cyHeight);
m_pRGBA = new CG32bitPixel [iSize];
m_bFreeRGBA = true;
m_AlphaType = Source.GetAlphaType();
ResetClipRect();
// Copy
CopyTransformed(rcDest,
Source,
rcSrc,
SrcToDest,
DestToSrc,
rcDestXForm);
return true;
}
void CG32bitImage::DrawDot (int x, int y, CG32bitPixel rgbColor, MarkerTypes iMarker)
// DrawDot
//
// Draws a marker
{
switch (iMarker)
{
case markerPixel:
{
SetPixel(x, y, rgbColor);
break;
}
case markerSmallRound:
{
int xStart, xEnd, yStart, yEnd;
x = x - 1;
y = y - 1;
xStart = max(m_rcClip.left, x);
xEnd = min(m_rcClip.right, x + 3);
yStart = max(m_rcClip.top, y);
yEnd = min(m_rcClip.bottom, y + 3);
for (int yPos = yStart; yPos < yEnd; yPos++)
{
CG32bitPixel *pPos = GetPixelPos(xStart, yPos);
for (int xPos = xStart; xPos < xEnd; xPos++)
{
BYTE byTrans = g_wSmallRoundMask[(yPos - y) * 3 + xPos - x];
if (byTrans == 0xff)
*pPos = rgbColor;
else if (byTrans == 0x00)
NULL;
else
*pPos = CG32bitPixel::Blend(*pPos, rgbColor, byTrans);
pPos++;
}
pPos = NextRow(pPos);
}
break;
}
case markerSmallCross:
{
int yTop = y - SMALL_SQUARE_SIZE;
int yBottom = y + SMALL_SQUARE_SIZE;
int xLeft = x - SMALL_SQUARE_SIZE;
int xRight = x + SMALL_SQUARE_SIZE;
// Draw the horizontal line
if (y >= m_rcClip.top && y < m_rcClip.bottom)
{
CG32bitPixel *pRowStart = GetPixelPos(0, y);
CG32bitPixel *pPos = pRowStart + Max((int)m_rcClip.left, xLeft);
CG32bitPixel *pPosEnd = pRowStart + Min(xRight+1, (int)m_rcClip.right);
while (pPos < pPosEnd)
*pPos++ = rgbColor;
}
// Draw the vertical line
if (x >= m_rcClip.left && x < m_rcClip.right)
{
CG32bitPixel *pPos = GetPixelPos(x, Max(yTop+1, (int)m_rcClip.top));
CG32bitPixel *pPosEnd = GetPixelPos(x, Min(yBottom, (int)m_rcClip.bottom));
while (pPos < pPosEnd)
{
*pPos = rgbColor;
pPos = NextRow(pPos);
}
}
break;
}
case markerMediumCross:
{
int yTop = y - MEDIUM_SQUARE_SIZE;
int yBottom = y + MEDIUM_SQUARE_SIZE;
int xLeft = x - MEDIUM_SQUARE_SIZE;
int xRight = x + MEDIUM_SQUARE_SIZE;
// Draw the horizontal line
if (y >= m_rcClip.top && y < m_rcClip.bottom)
{
CG32bitPixel *pRowStart = GetPixelPos(0, y);
CG32bitPixel *pPos = pRowStart + Max((int)m_rcClip.left, xLeft);
CG32bitPixel *pPosEnd = pRowStart + Min(xRight+1, (int)m_rcClip.right);
while (pPos < pPosEnd)
*pPos++ = rgbColor;
}
// Draw the vertical line
if (x >= m_rcClip.left && x < m_rcClip.right)
{
CG32bitPixel *pPos = GetPixelPos(x, Max(yTop, (int)m_rcClip.top));
CG32bitPixel *pPosEnd = GetPixelPos(x, Min(yBottom+1, (int)m_rcClip.bottom));
while (pPos < pPosEnd)
{
*pPos = rgbColor;
pPos = NextRow(pPos);
}
}
break;
}
case markerSmallFilledSquare:
{
int xLeft = x - SMALL_SQUARE_SIZE;
int yTop = y - SMALL_SQUARE_SIZE;
CG32bitPixel rgbInsideColor = CG32bitPixel::Blend(0, rgbColor, (BYTE)192);
DrawDot(x, y, rgbColor, markerSmallSquare);
Fill(xLeft + 1, yTop + 1, 2 * SMALL_SQUARE_SIZE - 1, 2 * SMALL_SQUARE_SIZE - 1, rgbInsideColor);
break;
}
case markerSmallCircle:
{
CG32bitPixel rgbFade1 = CG32bitPixel::Blend(0, rgbColor, (BYTE)192);
CG32bitPixel rgbFade2 = CG32bitPixel::Blend(0, rgbColor, (BYTE)128);
SetPixel(x - 2, y, rgbColor);
SetPixel(x + 2, y, rgbColor);
SetPixel(x, y - 2, rgbColor);
SetPixel(x, y + 2, rgbColor);
SetPixel(x - 1, y - 1, rgbFade2);
SetPixel(x - 1, y + 1, rgbFade2);
SetPixel(x + 1, y - 1, rgbFade2);
SetPixel(x + 1, y + 1, rgbFade2);
SetPixel(x - 1, y - 2, rgbFade1);
SetPixel(x + 1, y - 2, rgbFade1);
SetPixel(x - 1, y + 2, rgbFade1);
SetPixel(x + 1, y + 2, rgbFade1);
SetPixel(x + 2, y - 1, rgbFade1);
SetPixel(x + 2, y + 1, rgbFade1);
SetPixel(x - 2, y - 1, rgbFade1);
SetPixel(x - 2, y + 1, rgbFade1);
break;
}
case markerTinyCircle:
{
SetPixel(x - 1, y, rgbColor);
SetPixel(x - 1, y + 1, rgbColor);
SetPixel(x + 2, y, rgbColor);
SetPixel(x + 2, y + 1, rgbColor);
SetPixel(x, y - 1, rgbColor);
SetPixel(x, y + 2, rgbColor);