dib.h File Reference

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Go to the source code of this file.

Macros
#define	ROUND(x)   (INT)((x) + 0.5)

Functions
BOOL	IsBitmapBlackAndWhite (HBITMAP hbm)
HBITMAP	CreateDIBWithProperties (int width, int height)
HBITMAP	CreateMonoBitmap (int width, int height, BOOL bWhite)
HBITMAP	CreateColorDIB (int width, int height, COLORREF rgb)
HBITMAP	CachedBufferDIB (HBITMAP hbm, int minimalWidth, int minimalHeight)
HBITMAP	ConvertToBlackAndWhite (HBITMAP hbm)
HBITMAP	CopyMonoImage (HBITMAP hbm, INT cx=0, INT cy=0)
static HBITMAP	CopyDIBImage (HBITMAP hbm, INT cx=0, INT cy=0)
int	GetDIBWidth (HBITMAP hbm)
int	GetDIBHeight (HBITMAP hbm)
BOOL	SaveDIBToFile (HBITMAP hBitmap, LPCWSTR FileName, BOOL fIsMainFile, REFGUID guidFileType=GUID_NULL)
HBITMAP	DoLoadImageFile (HWND hwnd, LPCWSTR name, BOOL fIsMainFile)
void	SetFileInfo (LPCWSTR name, LPWIN32_FIND_DATAW pFound, BOOL isAFile)
HBITMAP	InitializeImage (LPCWSTR name, LPWIN32_FIND_DATAW pFound, BOOL isFile)
HBITMAP	SetBitmapAndInfo (HBITMAP hBitmap, LPCWSTR name, LPWIN32_FIND_DATAW pFound, BOOL isFile)
HBITMAP	Rotate90DegreeBlt (HDC hDC1, INT cx, INT cy, BOOL bRight, BOOL bMono)
HBITMAP	SkewDIB (HDC hDC1, HBITMAP hbm, INT nDegree, BOOL bVertical, BOOL bMono=FALSE)
float	PpcmFromDpi (float dpi)
HGLOBAL	BitmapToClipboardDIB (HBITMAP hBitmap)
HBITMAP	BitmapFromClipboardDIB (HGLOBAL hGlobal)
HBITMAP	BitmapFromHEMF (HENHMETAFILE hEMF)
HBITMAP	getSubImage (HBITMAP hbmWhole, const RECT &rcPartial)
void	putSubImage (HBITMAP hbmWhole, const RECT &rcPartial, HBITMAP hbmPart)

Macro Definition Documentation

ROUND

#define ROUND

(

x

)

(INT)((x) + 0.5)

Definition at line 42 of file dib.h.

Function Documentation

BitmapFromClipboardDIB()

HBITMAP BitmapFromClipboardDIB

(

HGLOBAL

hGlobal

)

Definition at line 510 of file dib.cpp.

{
    CWaitCursor waitCursor;
 
    LPBYTE pb = (LPBYTE)GlobalLock(hGlobal);
    if (!pb)
        return NULL;
 
    LPBITMAPINFO pbmi = (LPBITMAPINFO)pb;
    pb += pbmi->bmiHeader.biSize;
 
    INT cColors = 0, cbColors = 0;
    if (pbmi->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
    {
        LPBITMAPCOREINFO pbmci = (LPBITMAPCOREINFO)pbmi;
        WORD BitCount = pbmci->bmciHeader.bcBitCount;
        if (BitCount < 16)
        {
            cColors = (1 << BitCount);
            cbColors = cColors * sizeof(RGBTRIPLE);
            pb += cbColors;
        }
    }
    else if (pbmi->bmiHeader.biSize >= sizeof(BITMAPINFOHEADER))
    {
        WORD BitCount = pbmi->bmiHeader.biBitCount;
        if (BitCount < 16)
        {
            cColors = (1 << BitCount);
            cbColors = cColors * sizeof(RGBQUAD);
            pb += cbColors;
        }
    }
 
    HDC hDC = CreateCompatibleDC(NULL);
    HBITMAP hBitmap = CreateDIBSection(hDC, pbmi, DIB_RGB_COLORS, NULL, NULL, 0);
    if (hBitmap)
    {
        SetDIBits(hDC, hBitmap, 0, labs(pbmi->bmiHeader.biHeight), pb, pbmi, DIB_RGB_COLORS);
    }
    DeleteDC(hDC);
 
    GlobalUnlock(hGlobal);
 
    return hBitmap;
}

Referenced by CMainWindow::OnCommand().

BitmapFromHEMF()

HBITMAP BitmapFromHEMF

(

HENHMETAFILE

hEMF

)

Definition at line 557 of file dib.cpp.

{
    CWaitCursor waitCursor;
 
    ENHMETAHEADER header;
    if (!GetEnhMetaFileHeader(hEMF, sizeof(header), &header))
        return NULL;
 
    CRect rc = *(LPRECT)&header.rclBounds;
    INT cx = rc.Width(), cy = rc.Height();
    HBITMAP hbm = CreateColorDIB(cx, cy, RGB(255, 255, 255));
    if (!hbm)
        return NULL;
 
    HDC hDC = CreateCompatibleDC(NULL);
    HGDIOBJ hbmOld = SelectObject(hDC, hbm);
    PlayEnhMetaFile(hDC, hEMF, &rc);
    SelectObject(hDC, hbmOld);
    DeleteDC(hDC);
 
    return hbm;
}

Referenced by CMainWindow::OnCommand().

BitmapToClipboardDIB()

HGLOBAL BitmapToClipboardDIB

(

HBITMAP

hBitmap

)

Definition at line 447 of file dib.cpp.

{
    CWaitCursor waitCursor;
 
    BITMAP bm;
    if (!GetObjectW(hBitmap, sizeof(BITMAP), &bm))
        return NULL;
 
    BITMAPINFODX bmi;
    ZeroMemory(&bmi, sizeof(bmi));
    bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
    bmi.bmiHeader.biWidth = bm.bmWidth;
    bmi.bmiHeader.biHeight = bm.bmHeight;
    bmi.bmiHeader.biPlanes = 1;
    bmi.bmiHeader.biBitCount = bm.bmBitsPixel;
    bmi.bmiHeader.biCompression = BI_RGB;
    bmi.bmiHeader.biSizeImage = bm.bmWidthBytes * bm.bmHeight;
 
    INT cColors;
    if (bm.bmBitsPixel < 16)
        cColors = 1 << bm.bmBitsPixel;
    else
        cColors = 0;
 
    HDC hDC = CreateCompatibleDC(NULL);
 
    if (cColors)
    {
        HGDIOBJ hbmOld = SelectObject(hDC, hBitmap);
        cColors = GetDIBColorTable(hDC, 0, cColors, bmi.bmiColors);
        SelectObject(hDC, hbmOld);
    }
 
    DWORD cbColors = cColors * sizeof(RGBQUAD);
    DWORD dwSize = sizeof(BITMAPINFOHEADER) + cbColors + bmi.bmiHeader.biSizeImage;
    HGLOBAL hGlobal = GlobalAlloc(GHND | GMEM_SHARE, dwSize);
    if (hGlobal)
    {
        LPBYTE pb = (LPBYTE)GlobalLock(hGlobal);
        if (pb)
        {
            CopyMemory(pb, &bmi, sizeof(BITMAPINFOHEADER));
            pb += sizeof(BITMAPINFOHEADER);
 
            CopyMemory(pb, bmi.bmiColors, cbColors);
            pb += cbColors;
 
            GetDIBits(hDC, hBitmap, 0, bm.bmHeight, pb, &bmi, DIB_RGB_COLORS);
 
            GlobalUnlock(hGlobal);
        }
        else
        {
            GlobalFree(hGlobal);
            hGlobal = NULL;
        }
    }
 
    DeleteDC(hDC);
 
    return hGlobal;
}

Referenced by CMainWindow::OnCommand().

CachedBufferDIB()

HBITMAP CachedBufferDIB	(	HBITMAP	hbm,
		int	minimalWidth,
		int	minimalHeight
	)

Definition at line 115 of file dib.cpp.

{
    if (minimalWidth <= 0)
        minimalWidth = 1;
    if (minimalHeight <= 0)
        minimalHeight = 1;
 
    BITMAP bm;
    if (!GetObjectW(hbm, sizeof(bm), &bm))
        hbm = NULL;
 
    if (hbm && minimalWidth <= bm.bmWidth && minimalHeight <= bm.bmHeight)
        return hbm;
 
    if (hbm)
        DeleteObject(hbm);
 
    return CreateDIBWithProperties((minimalWidth * 3) / 2, (minimalHeight * 3) / 2);
}

Referenced by CCanvasWindow::DoDraw(), CMiniatureWindow::OnPaint(), and CPaletteWindow::OnPaint().

ConvertToBlackAndWhite()

HBITMAP ConvertToBlackAndWhite

(

HBITMAP

hbm

)

Definition at line 631 of file dib.cpp.

{
    CWaitCursor waitCursor;
 
    BITMAP bm;
    if (!::GetObjectW(hbm, sizeof(bm), &bm))
        return NULL;
 
    BITMAPINFOEX bmi;
    ZeroMemory(&bmi, sizeof(bmi));
    bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
    bmi.bmiHeader.biWidth = bm.bmWidth;
    bmi.bmiHeader.biHeight = bm.bmHeight;
    bmi.bmiHeader.biPlanes = 1;
    bmi.bmiHeader.biBitCount = 1;
    bmi.bmiColors[1].rgbBlue = 255;
    bmi.bmiColors[1].rgbGreen = 255;
    bmi.bmiColors[1].rgbRed = 255;
    HDC hdc = ::CreateCompatibleDC(NULL);
    LPVOID pvMonoBits;
    HBITMAP hMonoBitmap = ::CreateDIBSection(hdc, &bmi, DIB_RGB_COLORS, &pvMonoBits, NULL, 0);
    if (!hMonoBitmap)
    {
        ::DeleteDC(hdc);
        return NULL;
    }
 
    HBITMAP hNewBitmap = CreateDIBWithProperties(bm.bmWidth, bm.bmHeight);
    if (hNewBitmap)
    {
        ::GetDIBits(hdc, hbm, 0, bm.bmHeight, pvMonoBits, &bmi, DIB_RGB_COLORS);
        ::SetDIBits(hdc, hNewBitmap, 0, bm.bmHeight, pvMonoBits, &bmi, DIB_RGB_COLORS);
    }
    ::DeleteObject(hMonoBitmap);
    ::DeleteDC(hdc);
 
    return hNewBitmap;
}

Referenced by ImageModel::PushBlackAndWhite().

CopyDIBImage()

static HBITMAP CopyDIBImage ( HBITMAP  hbm, INT  cx = 0, INT  cy = 0  )

inlinestatic

Definition at line 19 of file dib.h.

{
    return (HBITMAP)CopyImage(hbm, IMAGE_BITMAP, cx, cy, LR_COPYRETURNORG | LR_CREATEDIBSECTION);
}

Referenced by ImageModel::CopyBitmap(), SkewDIB(), SelectionModel::StretchSkew(), and ImageModel::StretchSkew().

CopyMonoImage()

HBITMAP CopyMonoImage	(	HBITMAP	hbm,
		INT	cx = 0,
		INT	cy = 0
	)

Definition at line 87 of file dib.cpp.

{
    BITMAP bm;
    if (!::GetObjectW(hbm, sizeof(bm), &bm))
        return NULL;
 
    if (cx == 0 || cy == 0)
    {
        cx = bm.bmWidth;
        cy = bm.bmHeight;
    }
 
    HBITMAP hbmNew = ::CreateBitmap(cx, cy, 1, 1, NULL);
    if (!hbmNew)
        return NULL;
 
    HDC hdc1 = ::CreateCompatibleDC(NULL);
    HDC hdc2 = ::CreateCompatibleDC(NULL);
    HGDIOBJ hbm1Old = ::SelectObject(hdc1, hbm);
    HGDIOBJ hbm2Old = ::SelectObject(hdc2, hbmNew);
    ::StretchBlt(hdc2, 0, 0, cx, cy, hdc1, 0, 0, bm.bmWidth, bm.bmHeight, SRCCOPY);
    ::SelectObject(hdc1, hbm1Old);
    ::SelectObject(hdc2, hbm2Old);
    ::DeleteDC(hdc1);
    ::DeleteDC(hdc2);
    return hbmNew;
}

Referenced by SelectionModel::StretchSkew().

CreateColorDIB()

HBITMAP CreateColorDIB	(	int	width,
		int	height,
		COLORREF	rgb
	)

Definition at line 65 of file dib.cpp.

{
    HBITMAP ret = CreateDIBWithProperties(width, height);
    if (!ret)
        return NULL;
 
    if (rgb)
    {
        HDC hdc = CreateCompatibleDC(NULL);
        HGDIOBJ hbmOld = SelectObject(hdc, ret);
        RECT rc;
        SetRect(&rc, 0, 0, width, height);
        HBRUSH hbr = CreateSolidBrush(rgb);
        FillRect(hdc, &rc, hbr);
        DeleteObject(hbr);
        SelectObject(hdc, hbmOld);
        DeleteDC(hdc);
    }
 
    return ret;
}

Referenced by BitmapFromHEMF(), ColorKeyedMaskBlt(), ImageModel::Crop(), SelectionModel::GetSelectionContents(), ImageModel::ImageModel(), InitializeImage(), and SkewDIB().

CreateDIBWithProperties()

HBITMAP CreateDIBWithProperties	(	int	width,
		int	height
	)

Definition at line 32 of file dib.cpp.

{
    BITMAPINFO bmi;
    ZeroMemory(&bmi, sizeof(BITMAPINFO));
    bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
    bmi.bmiHeader.biWidth = width;
    bmi.bmiHeader.biHeight = height;
    bmi.bmiHeader.biPlanes = 1;
    bmi.bmiHeader.biBitCount = 24;
    return CreateDIBSection(NULL, &bmi, DIB_RGB_COLORS, NULL, NULL, 0);
}

Referenced by CachedBufferDIB(), ConvertToBlackAndWhite(), CreateColorDIB(), getSubImage(), and Rotate90DegreeBlt().

CreateMonoBitmap()

HBITMAP CreateMonoBitmap	(	int	width,
		int	height,
		BOOL	bWhite
	)

Definition at line 45 of file dib.cpp.

{
    HBITMAP hbm = CreateBitmap(width, height, 1, 1, NULL);
    if (hbm == NULL)
        return NULL;
 
    if (bWhite)
    {
        HDC hdc = CreateCompatibleDC(NULL);
        HGDIOBJ hbmOld = SelectObject(hdc, hbm);
        RECT rc = { 0, 0, width, height };
        FillRect(hdc, &rc, (HBRUSH)GetStockObject(WHITE_BRUSH));
        SelectObject(hdc, hbmOld);
        DeleteDC(hdc);
    }
 
    return hbm;
}

Referenced by SkewDIB(), and SelectionModel::StretchSkew().

DoLoadImageFile()

HBITMAP DoLoadImageFile	(	HWND	hwnd,
		LPCWSTR	name,
		BOOL	fIsMainFile
	)

Definition at line 256 of file dib.cpp.

{
    CWaitCursor waitCursor;
 
    // find the file
    WIN32_FIND_DATAW find;
    HANDLE hFind = ::FindFirstFileW(name, &find);
    if (hFind == INVALID_HANDLE_VALUE) // does not exist
    {
        ShowError(IDS_LOADERRORTEXT, name);
        return NULL;
    }
    ::FindClose(hFind);
 
    // is file empty?
    if (find.nFileSizeLow == 0 && find.nFileSizeHigh == 0)
    {
        if (fIsMainFile)
            return InitializeImage(name, &find, TRUE);
    }
 
    // load the image
    CImageDx img;
    float xDpi = 0, yDpi = 0;
    HRESULT hr = img.LoadDx(name, &xDpi, &yDpi);
    if (FAILED(hr) && fIsMainFile)
    {
        imageModel.ClearHistory();
        hr = img.LoadDx(name, &xDpi, &yDpi);
    }
    if (FAILED(hr))
    {
        ATLTRACE("hr: 0x%08lX\n", hr);
        ShowError(IDS_LOADERRORTEXT, name);
        return NULL;
    }
 
    HBITMAP hBitmap = img.Detach();
    if (!fIsMainFile)
        return hBitmap;
 
    if (xDpi <= 0 || yDpi <= 0)
    {
        HDC hDC = ::GetDC(NULL);
        xDpi = (float)::GetDeviceCaps(hDC, LOGPIXELSX);
        yDpi = (float)::GetDeviceCaps(hDC, LOGPIXELSY);
        ::ReleaseDC(NULL, hDC);
    }
 
    g_xDpi = xDpi;
    g_yDpi = yDpi;
 
    SetBitmapAndInfo(hBitmap, name, &find, TRUE);
    return hBitmap;
}

Referenced by CMainWindow::OnCommand(), CMainWindow::OnDropFiles(), and wWinMain().

GetDIBHeight()

int GetDIBHeight

(

HBITMAP

hbm

)

Definition at line 144 of file dib.cpp.

{
    BITMAP bm;
    ::GetObjectW(hBitmap, sizeof(BITMAP), &bm);
    return bm.bmHeight;
}

Referenced by ImageModel::GetHeight(), SelectionModel::InsertFromHBITMAP(), and CMainWindow::InsertSelectionFromHBITMAP().

GetDIBWidth()

int GetDIBWidth

(

HBITMAP

hbm

)

Definition at line 136 of file dib.cpp.

{
    BITMAP bm;
    ::GetObjectW(hBitmap, sizeof(BITMAP), &bm);
    return bm.bmWidth;
}

Referenced by ImageModel::GetWidth(), SelectionModel::InsertFromHBITMAP(), and CMainWindow::InsertSelectionFromHBITMAP().

getSubImage()

HBITMAP getSubImage	(	HBITMAP	hbmWhole,
		const RECT &	rcPartial
	)

Definition at line 409 of file dib.cpp.

{
    CRect rc = rcPartial;
    HBITMAP hbmPart = CreateDIBWithProperties(rc.Width(), rc.Height());
    if (!hbmPart)
        return NULL;
 
    HDC hDC1 = ::CreateCompatibleDC(NULL);
    HDC hDC2 = ::CreateCompatibleDC(NULL);
    HGDIOBJ hbm1Old = ::SelectObject(hDC1, hbmWhole);
    HGDIOBJ hbm2Old = ::SelectObject(hDC2, hbmPart);
    ::BitBlt(hDC2, 0, 0, rc.Width(), rc.Height(), hDC1, rc.left, rc.top, SRCCOPY);
    ::SelectObject(hDC1, hbm1Old);
    ::SelectObject(hDC2, hbm2Old);
    ::DeleteDC(hDC1);
    ::DeleteDC(hDC2);
    return hbmPart;
}

Referenced by SelectionModel::GetSelectionContents(), ImageModel::PushImageForUndo(), and ImageModel::SwapPart().

InitializeImage()

HBITMAP InitializeImage	(	LPCWSTR	name,
		LPWIN32_FIND_DATAW	pFound,
		BOOL	isFile
	)

Definition at line 226 of file dib.cpp.

{
    COLORREF white = RGB(255, 255, 255);
    HBITMAP hBitmap = CreateColorDIB(registrySettings.BMPWidth, registrySettings.BMPHeight, white);
    if (hBitmap == NULL)
    {
        ShowOutOfMemory();
        return NULL;
    }
 
    HDC hScreenDC = ::GetDC(NULL);
    g_xDpi = (float)::GetDeviceCaps(hScreenDC, LOGPIXELSX);
    g_yDpi = (float)::GetDeviceCaps(hScreenDC, LOGPIXELSY);
    ::ReleaseDC(NULL, hScreenDC);
 
    return SetBitmapAndInfo(hBitmap, name, pFound, isFile);
}

Referenced by DoLoadImageFile(), CMainWindow::OnCommand(), and wWinMain().

IsBitmapBlackAndWhite()

BOOL IsBitmapBlackAndWhite

(

HBITMAP

hbm

)

Definition at line 580 of file dib.cpp.

{
    CWaitCursor waitCursor;
 
    BITMAP bm;
    if (!::GetObjectW(hbm, sizeof(bm), &bm))
        return FALSE;
 
    if (bm.bmBitsPixel == 1)
        return TRUE;
 
    BITMAPINFOEX bmi;
    ZeroMemory(&bmi, sizeof(bmi));
    bmi.bmiHeader.biSize = sizeof(bmi.bmiHeader);
    bmi.bmiHeader.biWidth = bm.bmWidth;
    bmi.bmiHeader.biHeight = bm.bmHeight;
    bmi.bmiHeader.biPlanes = 1;
    bmi.bmiHeader.biBitCount = 24;
 
    DWORD widthbytes = WIDTHBYTES(24 * bm.bmWidth);
    DWORD cbBits = widthbytes * bm.bmHeight;
    LPBYTE pbBits = new BYTE[cbBits];
 
    HDC hdc = ::CreateCompatibleDC(NULL);
    ::GetDIBits(hdc, hbm, 0, bm.bmHeight, pbBits, &bmi, DIB_RGB_COLORS);
    ::DeleteDC(hdc);
 
    BOOL bBlackAndWhite = TRUE;
    for (LONG y = 0; y < bm.bmHeight; ++y)
    {
        LPBYTE pbLine = &pbBits[widthbytes * y];
        for (LONG x = 0; x < bm.bmWidth; ++x)
        {
            BYTE Blue = *pbLine++;
            BYTE Green = *pbLine++;
            BYTE Red = *pbLine++;
            COLORREF rgbColor = RGB(Red, Green, Blue);
            if (rgbColor != RGB(0, 0, 0) && rgbColor != RGB(255, 255, 255))
            {
                bBlackAndWhite = FALSE;
                goto Finish;
            }
        }
    }
 
Finish:
    delete[] pbBits;
 
    return bBlackAndWhite;
}

Referenced by ImageModel::IsBlackAndWhite().

PpcmFromDpi()

float PpcmFromDpi

(

float

dpi

)

Definition at line 25 of file dib.cpp.

{
    // 1 DPI is 0.0254 meter. 1 centimeter is 1/100 meter.
    return dpi / (0.0254f * 100.0f);
}

Referenced by CAttributesDialog::OnEdit1(), CAttributesDialog::OnEdit2(), CAttributesDialog::OnInitDialog(), and CAttributesDialog::OnRadioButton2().

putSubImage()

void putSubImage	(	HBITMAP	hbmWhole,
		const RECT &	rcPartial,
		HBITMAP	hbmPart
	)

Definition at line 428 of file dib.cpp.

{
    CRect rc = rcPartial;
    HDC hDC1 = ::CreateCompatibleDC(NULL);
    HDC hDC2 = ::CreateCompatibleDC(NULL);
    HGDIOBJ hbm1Old = ::SelectObject(hDC1, hbmWhole);
    HGDIOBJ hbm2Old = ::SelectObject(hDC2, hbmPart);
    ::BitBlt(hDC1, rc.left, rc.top, rc.Width(), rc.Height(), hDC2, 0, 0, SRCCOPY);
    ::SelectObject(hDC1, hbm1Old);
    ::SelectObject(hDC2, hbm2Old);
    ::DeleteDC(hDC1);
    ::DeleteDC(hDC2);
}

Referenced by ImageModel::Crop(), and ImageModel::SwapPart().

Rotate90DegreeBlt()

HBITMAP Rotate90DegreeBlt	(	HDC	hDC1,
		INT	cx,
		INT	cy,
		BOOL	bRight,
		BOOL	bMono
	)

Definition at line 312 of file dib.cpp.

{
    HBITMAP hbm2;
    if (bMono)
        hbm2 = ::CreateBitmap(cy, cx, 1, 1, NULL);
    else
        hbm2 = CreateDIBWithProperties(cy, cx);
    if (!hbm2)
        return NULL;
 
    HDC hDC2 = CreateCompatibleDC(NULL);
    HGDIOBJ hbm2Old = SelectObject(hDC2, hbm2);
    if (bRight)
    {
        for (INT y = 0; y < cy; ++y)
        {
            for (INT x = 0; x < cx; ++x)
            {
                COLORREF rgb = GetPixel(hDC1, x, y);
                SetPixelV(hDC2, cy - (y + 1), x, rgb);
            }
        }
    }
    else
    {
        for (INT y = 0; y < cy; ++y)
        {
            for (INT x = 0; x < cx; ++x)
            {
                COLORREF rgb = GetPixel(hDC1, x, y);
                SetPixelV(hDC2, y, cx - (x + 1), rgb);
            }
        }
    }
    SelectObject(hDC2, hbm2Old);
    DeleteDC(hDC2);
    return hbm2;
}

Referenced by ImageModel::RotateNTimes90Degrees(), and SelectionModel::RotateNTimes90Degrees().

SaveDIBToFile()

BOOL SaveDIBToFile	(	HBITMAP	hBitmap,
		LPCWSTR	FileName,
		BOOL	fIsMainFile,
		REFGUID	guidFileType = GUID_NULL
	)

Definition at line 151 of file dib.cpp.

{
    CWaitCursor waitCursor;
 
    CImageDx img;
    img.Attach(hBitmap);
    HRESULT hr = img.SaveDx(FileName, guidFileType, g_xDpi, g_yDpi);
    img.Detach();
 
    if (FAILED(hr))
    {
        ShowError(IDS_SAVEERROR, FileName);
        return FALSE;
    }
 
    if (!fIsMainFile)
        return TRUE;
 
    WIN32_FIND_DATAW find;
    HANDLE hFind = ::FindFirstFileW(FileName, &find);
    if (hFind == INVALID_HANDLE_VALUE)
    {
        ShowError(IDS_SAVEERROR, FileName);
        return FALSE;
    }
    ::FindClose(hFind);
 
    SetFileInfo(FileName, &find, TRUE);
    g_imageSaved = TRUE;
    return TRUE;
}

Referenced by CMainWindow::OnCommand(), OpenMailer(), and ImageModel::SaveImage().

SetBitmapAndInfo()

HBITMAP SetBitmapAndInfo	(	HBITMAP	hBitmap,
		LPCWSTR	name,
		LPWIN32_FIND_DATAW	pFound,
		BOOL	isFile
	)

Definition at line 244 of file dib.cpp.

{
    // update image
    canvasWindow.updateScrollPos();
    imageModel.PushImageForUndo(hBitmap);
    imageModel.ClearHistory();
 
    SetFileInfo(name, pFound, isFile);
    g_imageSaved = TRUE;
    return hBitmap;
}

Referenced by DoLoadImageFile(), and InitializeImage().

SetFileInfo()

void SetFileInfo	(	LPCWSTR	name,
		LPWIN32_FIND_DATAW	pFound,
		BOOL	isAFile
	)

Definition at line 183 of file dib.cpp.

{
    // update file time and size
    if (pFound)
    {
        FILETIME ft;
        ::FileTimeToLocalFileTime(&pFound->ftLastWriteTime, &ft);
        ::FileTimeToSystemTime(&ft, &g_fileTime);
 
        g_fileSize = pFound->nFileSizeLow;
    }
    else
    {
        ZeroMemory(&g_fileTime, sizeof(g_fileTime));
        g_fileSize = 0;
    }
 
    // update g_szFileName
    if (name && name[0])
    {
        CStringW strName = name;
        ::GetFullPathNameW(strName, _countof(g_szFileName), g_szFileName, NULL);
        // The following code won't work correctly when (name == g_szFileName):
        //   ::GetFullPathNameW(name, _countof(g_szFileName), g_szFileName, NULL);
    }
    else
    {
        ::LoadStringW(g_hinstExe, IDS_DEFAULTFILENAME, g_szFileName, _countof(g_szFileName));
    }
 
    // set title
    CStringW strTitle;
    strTitle.Format(IDS_WINDOWTITLE, PathFindFileNameW(g_szFileName));
    mainWindow.SetWindowText(strTitle);
 
    // update file info and recent
    g_isAFile = isAFile;
    if (g_isAFile)
        registrySettings.SetMostRecentFile(g_szFileName);
 
    g_imageSaved = TRUE;
}

Referenced by SaveDIBToFile(), and SetBitmapAndInfo().

SkewDIB()

HBITMAP SkewDIB	(	HDC	hDC1,
		HBITMAP	hbm,
		INT	nDegree,
		BOOL	bVertical,
		BOOL	bMono = FALSE
	)

Definition at line 351 of file dib.cpp.

{
    CWaitCursor waitCursor;
 
    if (nDegree == 0)
        return CopyDIBImage(hbm);
 
    const double eTan = tan(abs(nDegree) * M_PI / 180);
 
    BITMAP bm;
    ::GetObjectW(hbm, sizeof(bm), &bm);
    INT cx = bm.bmWidth, cy = bm.bmHeight, dx = 0, dy = 0;
    if (bVertical)
        dy = INT(cx * eTan);
    else
        dx = INT(cy * eTan);
 
    if (dx == 0 && dy == 0)
        return CopyDIBImage(hbm);
 
    HBITMAP hbmNew;
    if (bMono)
        hbmNew = CreateMonoBitmap(cx + dx, cy + dy, FALSE);
    else
        hbmNew = CreateColorDIB(cx + dx, cy + dy, RGB(255, 255, 255));
    if (!hbmNew)
        return NULL;
 
    HDC hDC2 = CreateCompatibleDC(NULL);
    HGDIOBJ hbm2Old = SelectObject(hDC2, hbmNew);
    if (bVertical)
    {
        for (INT x = 0; x < cx; ++x)
        {
            INT delta = INT(x * eTan);
            if (nDegree > 0)
                ::BitBlt(hDC2, x, (dy - delta), 1, cy, hDC1, x, 0, SRCCOPY);
            else
                ::BitBlt(hDC2, x, delta, 1, cy, hDC1, x, 0, SRCCOPY);
        }
    }
    else
    {
        for (INT y = 0; y < cy; ++y)
        {
            INT delta = INT(y * eTan);
            if (nDegree > 0)
                ::BitBlt(hDC2, (dx - delta), y, cx, 1, hDC1, 0, y, SRCCOPY);
            else
                ::BitBlt(hDC2, delta, y, cx, 1, hDC1, 0, y, SRCCOPY);
        }
    }
 
    SelectObject(hDC2, hbm2Old);
    DeleteDC(hDC2);
    return hbmNew;
}

Referenced by SelectionModel::StretchSkew(), and ImageModel::StretchSkew().