Bitmap font help

Splizxer · 2004-04-11T17:31:17

Ok, so im using the bitmap font tutorial (number 13). Its all fine and dandy, but I want to do some other things with it, like make centered aligned text, underlined (without making a new font list), and drawing a box around the text. I tried to do this: SIZE s; GetTextExtentPoint(hDC, strText, strlen(strText), &s); then the length of the entire string would be s.cx when I type, the length does get longer, different lengths for each character, but its not 100% accurate, the more I type the more its off, say about 3 characters and I can notice the width is terribly incorrect. Anyway, does anyone here know of a way to get the render length of the string? Thanks for your time reading, Splizxer

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Started by Splizxer April 10, 2004 06:37 PM

9 comments, last by Splizxer 20 years ago

onebeer

140

April 11, 2004 05:31 PM

Here is my routine for creating a bitmap font. It uses the GetGlyphyOutline() function to get the GLYPHMETRICS info for each character. Maybe this will help:

void oglFontBitmapDisplayList::CreateInternal(HDC hDC, oglFontDescriptor &_fontDesc){		// Create spot for the font metrics to be placed	int count = lastChar - firstChar + 1;	fontMetrics = new GLYPHMETRICS[count];	memset(fontMetrics, 0, sizeof(GLYPHMETRICS) * count);		// Create identity matrix 	MAT2 mat;	memset(&mat, 0, sizeof(mat));	mat.eM11.value = 1;	mat.eM22.value = 1;		// Get font metrics for each font	for( int i = 0; i < count; i++ )		GetGlyphOutline( hDC, i + firstChar, GGO_METRICS, &fontMetrics[i], 0, NULL, &mat );	fontCreated = (wglUseFontBitmaps(hDC, firstChar, lastChar, listBase) == TRUE);	if (!fontCreated) {		std::string s = strFormat("oglFontDisplayListBase::Create error %ld\n", GetLastError());		OutputDebugStr(s.c_str());	}}

- onebeer

Bitmap font help

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