static GF_Err gdip_get_text_size(GF_FontReader *dr, const unsigned short *string, Fixed *width, Fixed *height)
{
GpPath *path_tmp;
GpStringFormat *fmt;
FontPriv *ctx = (FontPriv *)dr->udta;
*width = *height = 0;
if (!ctx->font) return GF_BAD_PARAM;
GdipCreateStringFormat(StringFormatFlagsNoWrap, LANG_NEUTRAL, &fmt);
GdipCreatePath(FillModeAlternate, &path_tmp);
RectF rc;
rc.X = rc.Y = 0;
rc.Width = rc.Height = 0;
GdipAddPathString(path_tmp, (const WCHAR *)string, -1, ctx->font, ctx->font_style, ctx->em_size, &rc, fmt);
GdipGetPathWorldBounds(path_tmp, &rc, NULL, NULL);
adjust_white_space(string, &rc.Width, ctx->whitespace_width);
*width = FLT2FIX(rc.Width);
*height = FLT2FIX(rc.Height);
GdipDeleteStringFormat(fmt);
GdipDeletePath(path_tmp);
return GF_OK;
}
static M4Err gdip_get_text_size(FontRaster *dr, const unsigned short *string, Float *width, Float *height)
{
GpPath *path_tmp;
GpStringFormat *fmt;
FontPriv *ctx = (FontPriv *)dr->priv;
*width = *height = 0.0;
if (!ctx->font) return M4BadParam;
GdipCreateStringFormat(StringFormatFlagsNoWrap, LANG_NEUTRAL, &fmt);
GdipCreatePath(FillModeAlternate, &path_tmp);
RectF rc;
rc.X = rc.Y = 0;
rc.Width = rc.Height = 0;
GdipAddPathString(path_tmp, string, -1, ctx->font, ctx->font_style, ctx->font_size, &rc, fmt);
GdipGetPathWorldBounds(path_tmp, &rc, NULL, NULL);
*width = rc.Width;
*height = rc.Height;
adjust_white_space(string, width, ctx->whitespace_width );
GdipDeleteStringFormat(fmt);
GdipDeletePath(path_tmp);
return M4OK;
}
static M4Err gdip_add_text_to_path(FontRaster *dr, LPM4PATH path, Bool flipText,
const unsigned short* string, Float left, Float top, Float x_scaling, Float y_scaling,
Float ascent, M4Rect *bounds)
{
GpPath *path_tmp;
GpMatrix *mat;
GpStringFormat *fmt;
Float real_start;
unsigned short str[4];
FontPriv *ctx = (FontPriv *)dr->priv;
if (!ctx->font) return M4BadParam;
RectF rc;
rc.X = rc.Y = 0;
rc.Width = rc.Height = 0;
/*find first non-space char and estimate its glyph pos since GDIplus doesn't give this info*/
s32 len = utf8_wcslen(string);
s32 i=0;
for (; i<len; i++) {
if (string[i] != (unsigned short) ' ') break;
}
if (i>=len) return M4OK;
GdipCreateStringFormat(StringFormatFlagsNoWrap | StringFormatFlagsNoFitBlackBox | StringFormatFlagsMeasureTrailingSpaces, LANG_NEUTRAL, &fmt);
GdipSetStringFormatAlign(fmt, StringAlignmentNear);
GdipCreatePath(FillModeAlternate, &path_tmp);
/*to compute first glyph alignment (say 'x', we figure out its bounding full box by using the '_' char as wrapper (eg, "_x_")
then the bounding box starting from xMin of the glyph ('x_'). The difference between both will give us a good approx
of the glyph alignment*/
str[0] = (unsigned short) '_';
str[1] = string[i];
str[2] = (unsigned short) '_';
str[3] = (unsigned short) 0;
GdipAddPathString(path_tmp, str, -1, ctx->font, ctx->font_style, ctx->font_size, &rc, fmt);
GdipGetPathWorldBounds(path_tmp, &rc, NULL, NULL);
Float w1 = rc.Width - 2 * ctx->underscore_width;
GdipResetPath(path_tmp);
str[0] = string[i];
str[1] = (unsigned short) '_';
str[2] = (unsigned short) 0;
rc.X = rc.Y = 0;
rc.Width = rc.Height = 0;
GdipAddPathString(path_tmp, str, -1, ctx->font, ctx->font_style, ctx->font_size, &rc, fmt);
GdipGetPathWorldBounds(path_tmp, &rc, NULL, NULL);
real_start = w1 - (rc.Width - ctx->underscore_width);
GdipResetPath(path_tmp);
rc.X = rc.Y = 0;
rc.Width = rc.Height = 0;
GdipAddPathString(path_tmp, string, -1, ctx->font, ctx->font_style, ctx->font_size, &rc, fmt);
GdipGetPathWorldBounds(path_tmp, &rc, NULL, NULL);
GdipCreateMatrix(&mat);
Float off_left = rc.X;
Float off_left_real = rc.X;
/*adjust all white space at begin*/
adjust_white_space(string, &off_left, -1*ctx->whitespace_width);
if (flipText) {
/*first translate in local system*/
GdipTranslateMatrix(mat, left - off_left + real_start, -top, MatrixOrderAppend);
/*then scale as specified*/
GdipScaleMatrix(mat, x_scaling, -y_scaling, MatrixOrderAppend);
} else {
/*first translate in local system*/
GdipTranslateMatrix(mat, left - off_left + real_start, top-ascent, MatrixOrderAppend);
/*then scale as specified*/
GdipScaleMatrix(mat, x_scaling, y_scaling, MatrixOrderAppend);
}
GdipTransformPath(path_tmp, mat);
/*start enum*/
s32 count;
GdipGetPointCount(path_tmp, &count);
GpPointF *pts = new GpPointF[count];
BYTE *types = new BYTE[count];
GdipGetPathTypes(path_tmp, types, count);
GdipGetPathPoints(path_tmp, pts, count);
for (i=0; i<count; ) {
BOOL closed = 0;
s32 sub_type;
sub_type = types[i] & PathPointTypePathTypeMask;
if (sub_type == PathPointTypeStart) {
m4_path_add_move_to(path, pts[i].X, pts[i].Y);
i++;
}
else if (sub_type == PathPointTypeLine) {
m4_path_add_line_to(path, pts[i].X, pts[i].Y);
if (types[i] & PathPointTypeCloseSubpath) m4_path_close(path);
i++;
}
else if (sub_type == PathPointTypeBezier) {
assert(i+2<=count);
m4_path_add_cubic_to(path, pts[i].X, pts[i].Y, pts[i+1].X, pts[i+1].Y, pts[i+2].X, pts[i+2].Y);
if (types[i+2] & PathPointTypeCloseSubpath) m4_path_close(path);
i += 3;
} else {
assert(0);
break;
}
}
delete [] pts;
delete [] types;
GdipResetPath(path_tmp);
adjust_white_space(string, &rc.Width, ctx->whitespace_width);
rc.X = off_left_real;
rc.X = off_left;
/*special case where string is just space*/
if (!rc.Height) rc.Height = 1;
GdipAddPathRectangles(path_tmp, &rc, 1);
GdipGetPathWorldBounds(path_tmp, &rc, mat, NULL);
bounds->x = rc.X;
bounds->y = rc.Y;
bounds->width = rc.Width;
bounds->height = rc.Height;
GdipDeleteStringFormat(fmt);
GdipDeletePath(path_tmp);
GdipDeleteMatrix(mat);
return M4OK;
}
