drawing.h File Reference

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Go to the source code of this file.

Functions
void	Line (HDC hdc, LONG x1, LONG y1, LONG x2, LONG y2, COLORREF color, int thickness)
void	Rect (HDC hdc, LONG x1, LONG y1, LONG x2, LONG y2, COLORREF fg, COLORREF bg, int thickness, int style)
void	Ellp (HDC hdc, LONG x1, LONG y1, LONG x2, LONG y2, COLORREF fg, COLORREF bg, int thickness, int style)
void	RRect (HDC hdc, LONG x1, LONG y1, LONG x2, LONG y2, COLORREF fg, COLORREF bg, int thickness, int style)
void	Poly (HDC hdc, POINT *lpPoints, int nCount, COLORREF fg, COLORREF bg, int thickness, int style, BOOL closed, BOOL inverted)
void	Bezier (HDC hdc, POINT p1, POINT p2, POINT p3, POINT p4, COLORREF color, int thickness)
void	Fill (HDC hdc, LONG x, LONG y, COLORREF color)
void	Erase (HDC hdc, LONG x1, LONG y1, LONG x2, LONG y2, COLORREF color, LONG radius)
void	Replace (HDC hdc, LONG x1, LONG y1, LONG x2, LONG y2, COLORREF fg, COLORREF bg, LONG radius)
void	Airbrush (HDC hdc, LONG x, LONG y, COLORREF color, LONG r)
void	Brush (HDC hdc, LONG x1, LONG y1, LONG x2, LONG y2, COLORREF color, LONG style, INT thickness)
void	RectSel (HDC hdc, LONG x1, LONG y1, LONG x2, LONG y2)
void	Text (HDC hdc, LONG x1, LONG y1, LONG x2, LONG y2, COLORREF fg, COLORREF bg, LPCWSTR lpchText, HFONT font, LONG style)
BOOL	ColorKeyedMaskBlt (HDC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HDC hdcSrc, int nXSrc, int nYSrc, int nSrcWidth, int nSrcHeight, HBITMAP hbmMask, COLORREF keyColor)
void	DrawXorRect (HDC hdc, const RECT *prc)

Function Documentation

Airbrush()

void Airbrush	(	HDC	hdc,
		LONG	x,
		LONG	y,
		COLORREF	color,
		LONG	r
	)

Definition at line 153 of file drawing.cpp.

{
    for (LONG dy = -r; dy <= r; dy++)
    {
        for (LONG dx = -r; dx <= r; dx++)
        {
            if ((dx * dx + dy * dy <= r * r) && (rand() % r == 0))
                ::SetPixelV(hdc, x + dx, y + dy, color);
        }
    }
}

Referenced by CToolSettingsWindow::drawAirBrush(), and AirBrushTool::OnDraw().

Bezier()

void Bezier	(	HDC	hdc,
		POINT	p1,
		POINT	p2,
		POINT	p3,
		POINT	p4,
		COLORREF	color,
		int	thickness
	)

Definition at line 93 of file drawing.cpp.

{
    HPEN oldPen;
    POINT fourPoints[4];
    fourPoints[0] = p1;
    fourPoints[1] = p2;
    fourPoints[2] = p3;
    fourPoints[3] = p4;
    oldPen = (HPEN) SelectObject(hdc, CreatePen(PS_SOLID, thickness, color));
    PolyBezier(hdc, fourPoints, 4);
    DeleteObject(SelectObject(hdc, oldPen));
}

Referenced by GDI_Bezier(), and BezierTool::OnDrawOverlayOnImage().

Brush()

void Brush	(	HDC	hdc,
		LONG	x1,
		LONG	y1,
		LONG	x2,
		LONG	y2,
		COLORREF	color,
		LONG	style,
		INT	thickness
	)

Definition at line 166 of file drawing.cpp.

{
    HPEN oldPen = (HPEN) SelectObject(hdc, CreatePen(PS_SOLID, 1, color));
    HBRUSH oldBrush = (HBRUSH) SelectObject(hdc, CreateSolidBrush(color));
 
    if (thickness <= 1)
    {
        Line(hdc, x1, y1, x2, y2, color, thickness);
    }
    else
    {
        LONG a, b = max(1, max(labs(x2 - x1), labs(y2 - y1)));
        switch ((BrushStyle)style)
        {
            case BrushStyleRound:
                for (a = 0; a <= b; a++)
                {
                    Ellipse(hdc,
                            (x1 * (b - a) + x2 * a) / b - (thickness / 2),
                            (y1 * (b - a) + y2 * a) / b - (thickness / 2),
                            (x1 * (b - a) + x2 * a) / b + (thickness / 2),
                            (y1 * (b - a) + y2 * a) / b + (thickness / 2));
                }
                break;
 
            case BrushStyleSquare:
                for (a = 0; a <= b; a++)
                {
                    Rectangle(hdc,
                              (x1 * (b - a) + x2 * a) / b - (thickness / 2),
                              (y1 * (b - a) + y2 * a) / b - (thickness / 2),
                              (x1 * (b - a) + x2 * a) / b + (thickness / 2),
                              (y1 * (b - a) + y2 * a) / b + (thickness / 2));
                }
                break;
 
            case BrushStyleForeSlash:
            case BrushStyleBackSlash:
            {
                POINT offsetTop, offsetBottom;
                if ((BrushStyle)style == BrushStyleForeSlash)
                {
                    offsetTop    = { (thickness - 1) / 2, -(thickness - 1) / 2 };
                    offsetBottom = { -thickness      / 2,   thickness      / 2 };
                }
                else
                {
                    offsetTop =    { -thickness      / 2, -thickness      / 2 };
                    offsetBottom = { (thickness - 1) / 2, (thickness - 1) / 2 };
                }
                POINT points[4] =
                {
                    { x1 + offsetTop.x,    y1 + offsetTop.y    },
                    { x1 + offsetBottom.x, y1 + offsetBottom.y },
                    { x2 + offsetBottom.x, y2 + offsetBottom.y },
                    { x2 + offsetTop.x,    y2 + offsetTop.y    },
                };
                Polygon(hdc, points, _countof(points));
                break;
            }
        }
    }
    DeleteObject(SelectObject(hdc, oldBrush));
    DeleteObject(SelectObject(hdc, oldPen));
}

ColorKeyedMaskBlt()

BOOL ColorKeyedMaskBlt	(	HDC	hdcDest,
		int	nXDest,
		int	nYDest,
		int	nWidth,
		int	nHeight,
		HDC	hdcSrc,
		int	nXSrc,
		int	nYSrc,
		int	nSrcWidth,
		int	nSrcHeight,
		HBITMAP	hbmMask,
		COLORREF	keyColor
	)

Definition at line 287 of file drawing.cpp.

{
    HDC hTempDC1, hTempDC2;
    HBITMAP hbmTempColor, hbmTempMask;
    HGDIOBJ hbmOld1, hbmOld2;
 
    if (hbmMask == NULL)
    {
        if (keyColor == CLR_INVALID)
        {
            ::StretchBlt(hdcDest, nXDest, nYDest, nWidth, nHeight,
                         hdcSrc, nXSrc, nYSrc, nSrcWidth, nSrcHeight, SRCCOPY);
        }
        else
        {
            ::GdiTransparentBlt(hdcDest, nXDest, nYDest, nWidth, nHeight,
                                hdcSrc, nXSrc, nYSrc, nSrcWidth, nSrcHeight, keyColor);
        }
        return TRUE;
    }
    else if (nWidth == nSrcWidth && nHeight == nSrcHeight && keyColor == CLR_INVALID)
    {
        ::MaskBlt(hdcDest, nXDest, nYDest, nWidth, nHeight,
                  hdcSrc, nXSrc, nYSrc, hbmMask, 0, 0, MAKEROP4(SRCCOPY, 0xAA0029));
        return TRUE;
    }
 
    hTempDC1 = ::CreateCompatibleDC(hdcDest);
    hTempDC2 = ::CreateCompatibleDC(hdcDest);
    hbmTempMask = ::CreateBitmap(nWidth, nHeight, 1, 1, NULL);
    hbmTempColor = CreateColorDIB(nWidth, nHeight, RGB(255, 255, 255));
 
    // hbmTempMask <-- hbmMask (stretched)
    hbmOld1 = ::SelectObject(hTempDC1, hbmMask);
    hbmOld2 = ::SelectObject(hTempDC2, hbmTempMask);
    ::StretchBlt(hTempDC2, 0, 0, nWidth, nHeight, hTempDC1, 0, 0, nSrcWidth, nSrcHeight, SRCCOPY);
    ::SelectObject(hTempDC2, hbmOld2);
    ::SelectObject(hTempDC1, hbmOld1);
 
    hbmOld1 = ::SelectObject(hTempDC1, hbmTempColor);
    if (keyColor == CLR_INVALID)
    {
        // hbmTempColor <-- hdcSrc (stretched)
        ::StretchBlt(hTempDC1, 0, 0, nWidth, nHeight,
                     hdcSrc, nXSrc, nYSrc, nSrcWidth, nSrcHeight, SRCCOPY);
 
        // hdcDest <-- hbmTempColor (masked)
        ::MaskBlt(hdcDest, nXDest, nYDest, nWidth, nHeight, hTempDC1, 0, 0,
                  hbmTempMask, 0, 0, MAKEROP4(SRCCOPY, 0xAA0029));
    }
    else
    {
        // hbmTempColor <-- hdcDest
        ::BitBlt(hTempDC1, 0, 0, nWidth, nHeight, hdcDest, nXDest, nYDest, SRCCOPY);
 
        // hbmTempColor <-- hdcSrc (color key)
        ::GdiTransparentBlt(hTempDC1, 0, 0, nWidth, nHeight,
                            hdcSrc, nXSrc, nYSrc, nSrcWidth, nSrcHeight, keyColor);
 
        // hdcDest <-- hbmTempColor (masked)
        ::MaskBlt(hdcDest, nXDest, nYDest, nWidth, nHeight, hTempDC1, 0, 0,
                  hbmTempMask, 0, 0, MAKEROP4(SRCCOPY, 0xAA0029));
    }
    ::SelectObject(hTempDC1, hbmOld1);
 
    ::DeleteObject(hbmTempColor);
    ::DeleteObject(hbmTempMask);
    ::DeleteDC(hTempDC2);
    ::DeleteDC(hTempDC1);
 
    return TRUE;
}

Referenced by SelectionModel::DrawSelection().

DrawXorRect()

void DrawXorRect	(	HDC	hdc,
		const RECT *	prc
	)

Definition at line 362 of file drawing.cpp.

{
    HGDIOBJ oldPen = ::SelectObject(hdc, ::CreatePen(PS_SOLID, 0, RGB(0, 0, 0)));
    HGDIOBJ oldBrush = ::SelectObject(hdc, ::GetStockObject(NULL_BRUSH));
    INT oldRop2 = SetROP2(hdc, R2_NOTXORPEN);
    ::Rectangle(hdc, prc->left, prc->top, prc->right, prc->bottom);
    ::SetROP2(hdc, oldRop2);
    ::SelectObject(hdc, oldBrush);
    ::DeleteObject(::SelectObject(hdc, oldPen));
}

Referenced by CCanvasWindow::DoDraw(), and ZoomTool::OnDrawOverlayOnCanvas().

Ellp()

void Ellp	(	HDC	hdc,
		LONG	x1,
		LONG	y1,
		LONG	x2,
		LONG	y2,
		COLORREF	fg,
		COLORREF	bg,
		int	thickness,
		int	style
	)

Definition at line 38 of file drawing.cpp.

{
    HBRUSH oldBrush;
    LOGBRUSH logbrush;
    HPEN oldPen = (HPEN) SelectObject(hdc, CreatePen(PS_SOLID, thickness, fg));
    logbrush.lbStyle = (style == 0) ? BS_HOLLOW : BS_SOLID;
    logbrush.lbColor = (style == 2) ? fg : bg;
    logbrush.lbHatch = 0;
    oldBrush = (HBRUSH) SelectObject(hdc, CreateBrushIndirect(&logbrush));
    Ellipse(hdc, x1, y1, x2, y2);
    DeleteObject(SelectObject(hdc, oldBrush));
    DeleteObject(SelectObject(hdc, oldPen));
}

Referenced by EllipseTool::OnDrawOverlayOnImage().

Erase()

void Erase	(	HDC	hdc,
		LONG	x1,
		LONG	y1,
		LONG	x2,
		LONG	y2,
		COLORREF	color,
		LONG	radius
	)

Definition at line 115 of file drawing.cpp.

{
    LONG b = max(1, max(labs(x2 - x1), labs(y2 - y1)));
    HBRUSH hbr = ::CreateSolidBrush(color);
 
    for (LONG a = 0; a <= b; a++)
    {
        LONG cx = (x1 * (b - a) + x2 * a) / b;
        LONG cy = (y1 * (b - a) + y2 * a) / b;
        RECT rc = { cx - radius, cy - radius, cx + radius, cy + radius };
        ::FillRect(hdc, &rc, hbr);
    }
 
    ::DeleteObject(hbr);
}

Referenced by GetUpdateRect(), IntBeginPaint(), and RubberTool::OnDraw().

Fill()

void Fill	(	HDC	hdc,
		LONG	x,
		LONG	y,
		COLORREF	color
	)

Definition at line 107 of file drawing.cpp.

{
    HBRUSH oldBrush = (HBRUSH) SelectObject(hdc, CreateSolidBrush(color));
    ExtFloodFill(hdc, x, y, GetPixel(hdc, x, y), FLOODFILLSURFACE);
    DeleteObject(SelectObject(hdc, oldBrush));
}

Referenced by CheckStringBuffer(), CheckStringBufferA(), CheckStringBufferW(), DIB_24BPP_HLine(), FillTool::OnButtonDown(), RtlFillMemory(), RtlFillMemoryUlong(), TuiDrawBox(), and UiDrawBox().

Line()

void Line	(	HDC	hdc,
		LONG	x1,
		LONG	y1,
		LONG	x2,
		LONG	y2,
		COLORREF	color,
		int	thickness
	)

Definition at line 13 of file drawing.cpp.

{
    HPEN oldPen = (HPEN) SelectObject(hdc, CreatePen(PS_SOLID, thickness, color));
    MoveToEx(hdc, x1, y1, NULL);
    LineTo(hdc, x2, y2);
    SetPixelV(hdc, x2, y2, color);
    DeleteObject(SelectObject(hdc, oldPen));
}

Poly()

void Poly	(	HDC	hdc,
		POINT *	lpPoints,
		int	nCount,
		COLORREF	fg,
		COLORREF	bg,
		int	thickness,
		int	style,
		BOOL	closed,
		BOOL	inverted
	)

Definition at line 68 of file drawing.cpp.

{
    LOGBRUSH logbrush;
    HBRUSH oldBrush;
    HPEN oldPen = (HPEN) SelectObject(hdc, CreatePen(PS_SOLID, thickness, fg));
    UINT oldRop = GetROP2(hdc);
 
    if (inverted)
      SetROP2(hdc, R2_NOTXORPEN);
 
    logbrush.lbStyle = (style == 0) ? BS_HOLLOW : BS_SOLID;
    logbrush.lbColor = (style == 2) ? fg : bg;
    logbrush.lbHatch = 0;
    oldBrush = (HBRUSH) SelectObject(hdc, CreateBrushIndirect(&logbrush));
    if (closed)
        Polygon(hdc, lpPoints, nCount);
    else
        Polyline(hdc, lpPoints, nCount);
    DeleteObject(SelectObject(hdc, oldBrush));
    DeleteObject(SelectObject(hdc, oldPen));
 
    SetROP2(hdc, oldRop);
}

Referenced by ShapeTool::OnDrawOverlayOnImage(), and FreeSelTool::OnDrawOverlayOnImage().

Rect()

void Rect	(	HDC	hdc,
		LONG	x1,
		LONG	y1,
		LONG	x2,
		LONG	y2,
		COLORREF	fg,
		COLORREF	bg,
		int	thickness,
		int	style
	)

Definition at line 23 of file drawing.cpp.

{
    HBRUSH oldBrush;
    LOGBRUSH logbrush;
    HPEN oldPen = (HPEN) SelectObject(hdc, CreatePen(PS_SOLID, thickness, fg));
    logbrush.lbStyle = (style == 0) ? BS_HOLLOW : BS_SOLID;
    logbrush.lbColor = (style == 2) ? fg : bg;
    logbrush.lbHatch = 0;
    oldBrush = (HBRUSH) SelectObject(hdc, CreateBrushIndirect(&logbrush));
    Rectangle(hdc, x1, y1, x2, y2);
    DeleteObject(SelectObject(hdc, oldBrush));
    DeleteObject(SelectObject(hdc, oldPen));
}

RectSel()

void RectSel	(	HDC	hdc,
		LONG	x1,
		LONG	y1,
		LONG	x2,
		LONG	y2
	)

Definition at line 233 of file drawing.cpp.

{
    HBRUSH oldBrush;
    LOGBRUSH logbrush;
    HPEN oldPen = (HPEN) SelectObject(hdc, CreatePen(PS_DOT, 1, GetSysColor(COLOR_HIGHLIGHT)));
    UINT oldRop = GetROP2(hdc);
 
    SetROP2(hdc, R2_NOTXORPEN);
 
    logbrush.lbStyle = BS_HOLLOW;
    logbrush.lbColor = 0;
    logbrush.lbHatch = 0;
    oldBrush = (HBRUSH) SelectObject(hdc, CreateBrushIndirect(&logbrush));
    Rectangle(hdc, x1, y1, x2, y2);
    DeleteObject(SelectObject(hdc, oldBrush));
    DeleteObject(SelectObject(hdc, oldPen));
 
    SetROP2(hdc, oldRop);
}

Referenced by RectSelTool::OnDrawOverlayOnImage(), and TextTool::OnDrawOverlayOnImage().

Replace()

void Replace	(	HDC	hdc,
		LONG	x1,
		LONG	y1,
		LONG	x2,
		LONG	y2,
		COLORREF	fg,
		COLORREF	bg,
		LONG	radius
	)

Definition at line 132 of file drawing.cpp.

{
    LONG b = max(1, max(labs(x2 - x1), labs(y2 - y1)));
 
    for (LONG a = 0; a <= b; a++)
    {
        LONG cx = (x1 * (b - a) + x2 * a) / b;
        LONG cy = (y1 * (b - a) + y2 * a) / b;
        RECT rc = { cx - radius, cy - radius, cx + radius, cy + radius };
        for (LONG y = rc.top; y < rc.bottom; ++y)
        {
            for (LONG x = rc.left; x < rc.right; ++x)
            {
                if (::GetPixel(hdc, x, y) == fg)
                    ::SetPixelV(hdc, x, y, bg);
            }
        }
    }
}

Referenced by COMDLG32_FR_CheckPartial(), COMDLG32_FR_HandleWMCommand(), RubberTool::OnDraw(), UDFHardLink(), UDFHardLinkFile__(), UDFRename(), and UDFRenameMoveFile__().

RRect()

void RRect	(	HDC	hdc,
		LONG	x1,
		LONG	y1,
		LONG	x2,
		LONG	y2,
		COLORREF	fg,
		COLORREF	bg,
		int	thickness,
		int	style
	)

Definition at line 53 of file drawing.cpp.

{
    LOGBRUSH logbrush;
    HBRUSH oldBrush;
    HPEN oldPen = (HPEN) SelectObject(hdc, CreatePen(PS_SOLID, thickness, fg));
    logbrush.lbStyle = (style == 0) ? BS_HOLLOW : BS_SOLID;
    logbrush.lbColor = (style == 2) ? fg : bg;
    logbrush.lbHatch = 0;
    oldBrush = (HBRUSH) SelectObject(hdc, CreateBrushIndirect(&logbrush));
    RoundRect(hdc, x1, y1, x2, y2, 16, 16);
    DeleteObject(SelectObject(hdc, oldBrush));
    DeleteObject(SelectObject(hdc, oldPen));
}

Referenced by RRectTool::OnDrawOverlayOnImage().

Text()

void Text	(	HDC	hdc,
		LONG	x1,
		LONG	y1,
		LONG	x2,
		LONG	y2,
		COLORREF	fg,
		COLORREF	bg,
		LPCWSTR	lpchText,
		HFONT	font,
		LONG	style
	)

Definition at line 254 of file drawing.cpp.

{
    INT iSaveDC = ::SaveDC(hdc); // We will modify the clipping region. Save now.
 
    CRect rc = { x1, y1, x2, y2 };
 
    if (style == 0) // Transparent
    {
        ::SetBkMode(hdc, TRANSPARENT);
    }
    else // Opaque
    {
        ::SetBkMode(hdc, OPAQUE);
        ::SetBkColor(hdc, bg);
 
        HBRUSH hbr = ::CreateSolidBrush(bg);
        ::FillRect(hdc, &rc, hbr); // Fill the background
        ::DeleteObject(hbr);
    }
 
    IntersectClipRect(hdc, rc.left, rc.top, rc.right, rc.bottom);
 
    HGDIOBJ hFontOld = ::SelectObject(hdc, font);
    ::SetTextColor(hdc, fg);
    const UINT uFormat = DT_LEFT | DT_TOP | DT_EDITCONTROL | DT_NOPREFIX | DT_NOCLIP |
                         DT_EXPANDTABS | DT_WORDBREAK;
    ::DrawTextW(hdc, lpchText, -1, &rc, uFormat);
    ::SelectObject(hdc, hFontOld);
 
    ::RestoreDC(hdc, iSaveDC); // Restore
}