Method Initialize

SampleFramework12/v1.00/Graphics/SpriteFont.cpp:32–192

}

void SpriteFont::Initialize(const wchar* fontName, float fontSize, uint32 fontStyle, bool antiAliased)
{
    texture.Shutdown();

    size = fontSize;

    TextRenderingHint hint = antiAliased ? TextRenderingHintAntiAliasGridFit : TextRenderingHintSingleBitPerPixelGridFit;

    // Init GDI+
    ULONG_PTR token = 0;
    GdiplusStartupInput startupInput(nullptr, true, true);
    GdiplusStartupOutput startupOutput;
    GdiPlusCall(GdiplusStartup(&token, &startupInput, &startupOutput));

    try
    {
        // Create the font
        Gdiplus::Font font(fontName, fontSize, fontStyle, UnitPixel, nullptr);

        // Check for error during construction
        GdiPlusCall(font.GetLastStatus());

        // Create a temporary Bitmap and Graphics for figuring out the rough size required
        // for drawing all of the characters
        int32 bmSize = static_cast<int32>(fontSize * NumChars * 2) + 1;
        Bitmap sizeBitmap(bmSize, bmSize, PixelFormat32bppARGB);
        GdiPlusCall(sizeBitmap.GetLastStatus());

        Graphics sizeGraphics(&sizeBitmap);
        GdiPlusCall(sizeGraphics.GetLastStatus());
        GdiPlusCall(sizeGraphics.SetTextRenderingHint(hint));

        charHeight = font.GetHeight(&sizeGraphics) * 1.5f;

        wchar allChars[NumChars + 1];
        for(wchar i = 0; i < NumChars; ++i)
            allChars[i] = i + StartChar;
        allChars[NumChars] = 0;

        RectF sizeRect;
        GdiPlusCall(sizeGraphics.MeasureString(allChars, NumChars, &font, PointF(0, 0), &sizeRect));
        int32 numRows = static_cast<int32>(sizeRect.Width / TexWidth) + 1;
        texHeight = static_cast<int32>(numRows * charHeight) + 1;

        // Create a temporary Bitmap and Graphics for drawing the characters one by one
        int32 tempSize = static_cast<int32>(fontSize * 2);
        Bitmap drawBitmap(tempSize, tempSize, PixelFormat32bppARGB);
        GdiPlusCall(drawBitmap.GetLastStatus());

        Graphics drawGraphics(&drawBitmap);
        GdiPlusCall(drawGraphics.GetLastStatus());
        GdiPlusCall(drawGraphics.SetTextRenderingHint(hint));

        // Create a temporary Bitmap + Graphics for creating a full character set
        Bitmap textBitmap (TexWidth, texHeight, PixelFormat32bppARGB);
        GdiPlusCall(textBitmap.GetLastStatus());

        Graphics textGraphics (&textBitmap);