C++ (Cpp) gdip_get_text_size Examples

Example #1

File: gdip_font.cpp Project: golgol7777/gpac

static GF_Err gdip_get_font_info(GF_FontReader *dr, char **font_name, s32 *em_size, s32 *ascent, s32 *descent, s32 *underline, s32 *line_spacing, s32 *max_advance_h, s32 *max_advance_v)
{
	UINT16 val, em;
	FontPriv *ctx = (FontPriv *)dr->udta;

	*font_name = NULL;
	*em_size = *ascent = *descent = *line_spacing = *max_advance_h = *max_advance_v = 0;
	if (!ctx->font) return GF_BAD_PARAM;

	GdipGetEmHeight(ctx->font, ctx->font_style, &em);
	*em_size = (s32) em;
	GdipGetCellAscent(ctx->font, ctx->font_style, &val);
	ctx->ascent = (Float) val;
	*ascent = (s32) val;
	GdipGetCellDescent(ctx->font, ctx->font_style, &val);
	*descent = (s32) val; *descent *= -1;
	ctx->descent = -1 * (Float) val;
	*underline = *descent / 2;
	GdipGetLineSpacing(ctx->font, ctx->font_style, &val);
	*line_spacing = (s32) val;
	*max_advance_v = *ascent - *descent;


	unsigned short test_str[4];
	Fixed w, h, w2;
	ctx->em_size = (Float) *em_size;
	test_str[0] = (unsigned short) '_';
	test_str[1] = (unsigned short) '\0';
	gdip_get_text_size(dr, test_str, &w, &h);
	ctx->underscore_width = FIX2FLT(w);

	test_str[0] = (unsigned short) '_';
	test_str[1] = (unsigned short) ' ';
	test_str[2] = (unsigned short) '_';
	test_str[3] = (unsigned short) '\0';
	gdip_get_text_size(dr, test_str, &w2, &h);
	ctx->whitespace_width = FIX2FLT(w2 - 2*w);

	*max_advance_h = (s32) MAX(ctx->underscore_width, ctx->whitespace_width);
	return GF_OK;
}

Example #2

File: gdip_font.cpp Project: DmitrySigaev/DSMedia

static M4Err gdip_set_font_size(FontRaster *dr, Float pixel_size)
{
	unsigned short test_str[4];
	FontPriv *ctx = (FontPriv *)dr->priv;
	if (!ctx->font) return M4BadParam;

	ctx->font_size = pixel_size;

	/*GDI+ won't return begin/end whitespace info through GetBoundingRect, so compute a default value for space...*/
	ctx->whitespace_width = 0;
	Float w, h, w2;
	test_str[0] = (unsigned short) '_';
	test_str[1] = (unsigned short) '\0';
	gdip_get_text_size(dr, test_str, &w, &h);
	ctx->underscore_width = w;

	test_str[0] = (unsigned short) '_';
	test_str[1] = (unsigned short) ' ';
	test_str[2] = (unsigned short) '_';
	test_str[3] = (unsigned short) '\0';
	gdip_get_text_size(dr, test_str, &w2, &h);
	ctx->whitespace_width = w2 - 2*w;
	return M4OK;
}