dib.h File Reference

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Functions
HBITMAP	CreateDIBWithProperties (int width, int height)
int	GetDIBWidth (HBITMAP hbm)
int	GetDIBHeight (HBITMAP hbm)
void	SaveDIBToFile (HBITMAP hBitmap, LPTSTR FileName, HDC hDC, LPSYSTEMTIME time, int *size, int hRes, int vRes)
void	LoadDIBFromFile (HBITMAP *hBitmap, LPCTSTR name, LPSYSTEMTIME time, int *size, int *hRes, int *vRes)
void	ShowFileLoadError (LPCTSTR name)

Function Documentation

CreateDIBWithProperties()

HBITMAP CreateDIBWithProperties	(	int	width,
		int	height
	)

Definition at line 16 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;
    bmi.bmiHeader.biCompression = BI_RGB;
    return CreateDIBSection(NULL, &bmi, DIB_RGB_COLORS, NULL, NULL, 0);
}

Referenced by SelectionModel::CalculateBoundingBoxAndContents(), SelectionModel::CalculateContents(), ImageModel::Crop(), ImageModel::ImageModel(), and SelectionModel::ScaleContentsToFit().

GetDIBHeight()

int GetDIBHeight

(

HBITMAP

hbm

)

Definition at line 38 of file dib.cpp.

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

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

GetDIBWidth()

int GetDIBWidth

(

HBITMAP

hbm

)

Definition at line 30 of file dib.cpp.

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

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

LoadDIBFromFile()

void LoadDIBFromFile	(	HBITMAP *	hBitmap,
		LPCTSTR	name,
		LPSYSTEMTIME	time,
		int *	size,
		int *	hRes,
		int *	vRes
	)

Definition at line 84 of file dib.cpp.

{
    using namespace Gdiplus;
    Bitmap img(CStringW(name), FALSE);  // always use WCHAR string

    if (!hBitmap)
    {
        ShowFileLoadError(name);
        return;
    }

    img.GetHBITMAP(Color(255, 255, 255), hBitmap);

    // update time and size
    HANDLE hFile =
        CreateFile(name, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL);
    if (hFile == INVALID_HANDLE_VALUE)
    {
        ShowFileLoadError(name);
        return;
    }

    if (time)
    {
        FILETIME ft;
        GetFileTime(hFile, NULL, NULL, &ft);
        FileTimeToSystemTime(&ft, time);
    }
    if (size)
        *size = GetFileSize(hFile, NULL);

    // update hRes and vRes
    *hRes = (int) (img.GetHorizontalResolution() * 1000 / 25.4);
    *vRes = (int) (img.GetVerticalResolution() * 1000 / 25.4);

    CloseHandle(hFile);
}

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

SaveDIBToFile()

void SaveDIBToFile	(	HBITMAP	hBitmap,
		LPTSTR	FileName,
		HDC	hDC,
		LPSYSTEMTIME	time,
		int *	size,
		int	hRes,
		int	vRes
	)

Definition at line 46 of file dib.cpp.

{
    CImage img;
    img.Attach(hBitmap);
    img.Save(FileName);  // TODO: error handling
    img.Detach();

    // update time and size

    HANDLE hFile =
        CreateFile(FileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL);
    if (hFile == INVALID_HANDLE_VALUE)
        return;

    if (time)
    {
        FILETIME ft;
        GetFileTime(hFile, NULL, NULL, &ft);
        FileTimeToSystemTime(&ft, time);
    }
    if (size)
        *size = GetFileSize(hFile, NULL);

    // TODO: update hRes and vRes

    CloseHandle(hFile);
}

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

ShowFileLoadError()

void ShowFileLoadError

(

LPCTSTR

name

)

Definition at line 74 of file dib.cpp.

{
    CString strText;
    strText.Format(IDS_LOADERRORTEXT, (LPCTSTR) name);
    CString strProgramName;
    strProgramName.LoadString(IDS_PROGRAMNAME);
    mainWindow.MessageBox(strText, strProgramName, MB_OK | MB_ICONEXCLAMATION);
}

Referenced by LoadDIBFromFile().