bootvid_font_generator.c File Reference

#include <stdio.h>
#include <conio.h>
#include <windows.h>

Include dependency graph for bootvid_font_generator.c:

Go to the source code of this file.

Macros
#define	FONT_NAME_DEF   "Lucida Console"
#define	FONT_SIZE_DEF   10
#define	X_OFFSET_DEF   0
#define	Y_OFFSET_DEF   0
#define	HEIGHT   13
#define	WIDTH   8

Functions
static void	DumpCharacterFontData (DWORD BmpBits[])
static BOOL	PlotCharacter (HDC hDC, HFONT hFont, INT XOffset, INT YOffset, CHAR Character, DWORD BmpBits[])
static void	DumpFont (LPSTR FontName, INT FontSize, INT XOffset, INT YOffset)
int	main (int argc, char **argv)

Macro Definition Documentation

FONT_NAME_DEF

#define FONT_NAME_DEF   "Lucida Console"

Definition at line 18 of file bootvid_font_generator.c.

FONT_SIZE_DEF

#define FONT_SIZE_DEF   10

Definition at line 19 of file bootvid_font_generator.c.

HEIGHT

#define HEIGHT   13

Definition at line 23 of file bootvid_font_generator.c.

WIDTH

#define WIDTH   8

Definition at line 24 of file bootvid_font_generator.c.

X_OFFSET_DEF

#define X_OFFSET_DEF   0

Definition at line 20 of file bootvid_font_generator.c.

Y_OFFSET_DEF

#define Y_OFFSET_DEF   0

Definition at line 21 of file bootvid_font_generator.c.

Function Documentation

DumpCharacterFontData()

static void DumpCharacterFontData ( DWORD  BmpBits[] )

static

Dump the FontData for the bootvid/i386/bootdata.c array.

Definition at line 54 of file bootvid_font_generator.c.

{
    static int iBegin = 0;
    int i;
 
    fprintf(stdout, "    ");
 
    for (i = 0; i < HEIGHT; i++)
        fprintf(stdout, "0x%02lX, ", BmpBits[i]);
 
    fprintf(stdout, " // %d\n", iBegin);
    iBegin += HEIGHT;
}

Referenced by DumpFont().

DumpFont()

static void DumpFont ( LPSTR  FontName, INT  FontSize, INT  XOffset, INT  YOffset  )

static

Definition at line 124 of file bootvid_font_generator.c.

{
    int iHeight;
    HDC hDC = NULL;
    HFONT hFont = NULL;
 
    DWORD BmpBits[HEIGHT];
    USHORT c;
 
    hDC = CreateCompatibleDC(NULL);
    if (!hDC)
    {
        fprintf(stderr, "CreateCompatibleDC failed with error %lu!\n", GetLastError());
        goto Cleanup;
    }
 
    iHeight = -MulDiv(FontSize, GetDeviceCaps(hDC, LOGPIXELSY), 72);
    hFont = CreateFontA(iHeight, 0, 0, 0, FW_NORMAL, FALSE, FALSE, FALSE,
                        ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
                        NONANTIALIASED_QUALITY, FIXED_PITCH, FontName);
    if (!hFont)
    {
        fprintf(stderr, "CreateFont failed with error %lu!\n", GetLastError());
        goto Cleanup;
    }
 
    for (c = 0; c < 256; c++)
    {
        PlotCharacter(hDC, hFont, XOffset, YOffset, (CHAR)c, BmpBits);
 
#ifdef DUMP_CHAR_ON_SCREEN
        DumpCharacterOnScreen(BmpBits);
        fprintf(stdout, "\nPress any key to continue...\n");
        _getch();
        system("cls");
#else
        DumpCharacterFontData(BmpBits);
#endif
    }
 
Cleanup:
    if (hFont)
        DeleteObject(hFont);
 
    if (hDC)
        DeleteDC(hDC);
}

Referenced by main().

main()

int main	(	int argc	,
		char **	argv
	)

Definition at line 172 of file bootvid_font_generator.c.

{
    /* Validate the arguments */
    if (argc > 5 || (argc >= 2 && strncmp(argv[1], "/?", 2) == 0))
    {
        fprintf(stdout,
                "Usage: %s \"font name\" [font size] [X-offset] [Y-offset]\n"
                "Default font name is: \"%s\"\n"
                "Default font size is: %i\n"
                "Default X-offset  is: %i\n"
                "Default Y-offset  is: %i\n",
                argv[0],
                FONT_NAME_DEF, FONT_SIZE_DEF, X_OFFSET_DEF, Y_OFFSET_DEF);
 
        return -1;
    }
 
    DumpFont((argc <= 1) ? FONT_NAME_DEF : argv[1],
             (argc <= 2) ? FONT_SIZE_DEF : atoi(argv[2]),
             (argc <= 3) ?  X_OFFSET_DEF : atoi(argv[3]),
             (argc <= 4) ?  Y_OFFSET_DEF : atoi(argv[4]));
    return 0;
}

PlotCharacter()

static BOOL PlotCharacter ( HDC  hDC, HFONT  hFont, INT  XOffset, INT  YOffset, CHAR  Character, DWORD  BmpBits[]  )

static

Use GDI APIs to load a monospace font and plot a single character into a bitmap.

Definition at line 72 of file bootvid_font_generator.c.

{
    BOOL bReturnValue = FALSE;
    HBITMAP hOldBmp;
    HFONT hOldFont;
    HBITMAP hBmp = NULL;
    BYTE BmpInfo[sizeof(BITMAPINFO) + sizeof(RGBQUAD)];
    PBITMAPINFO pBmpInfo = (PBITMAPINFO)&BmpInfo;
 
    hBmp = CreateCompatibleBitmap(hDC, WIDTH, HEIGHT);
    if (!hBmp)
    {
        fprintf(stderr, "CreateCompatibleBitmap failed with error %lu!\n", GetLastError());
        goto Cleanup;
    }
 
    hOldBmp  = SelectObject(hDC, hBmp);
    hOldFont = SelectObject(hDC, hFont);
    SetBkColor(hDC, RGB(0, 0, 0));
    SetTextColor(hDC, RGB(255, 255, 255));
    TextOutA(hDC, XOffset, YOffset, &Character, 1);
 
    /*
     * Use enough memory for BITMAPINFO and one additional color in the color table.
     * BITMAPINFO already contains a color table entry for a single color and
     * GetDIBits needs space for two colors (black and white).
     */
    ZeroMemory(&BmpInfo, sizeof(BmpInfo));
    pBmpInfo->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
    pBmpInfo->bmiHeader.biHeight = -HEIGHT;
    pBmpInfo->bmiHeader.biWidth = WIDTH;
    pBmpInfo->bmiHeader.biBitCount = 1;
    pBmpInfo->bmiHeader.biPlanes = 1;
 
    bReturnValue = TRUE;
 
    if (!GetDIBits(hDC, hBmp, 0, HEIGHT, BmpBits, pBmpInfo, 0))
    {
        fprintf(stderr, "GetDIBits failed with error %lu!\n", GetLastError());
        bReturnValue = FALSE;
    }
 
    SelectObject(hDC, hOldBmp);
    SelectObject(hDC, hOldFont);
 
Cleanup:
    if (hBmp)
        DeleteObject(hBmp);
 
    return bReturnValue;
}

Referenced by DumpFont().