FT_Face
ServerFont::GetTransformedFace(bool rotate, bool shear) const
{
fStyle->Lock();
FT_Face face = fStyle->FreeTypeFace();
if (!face) {
fStyle->Unlock();
return NULL;
}
FT_Set_Char_Size(face, 0, int32(fSize * 64), 72, 72);
if ((rotate && fRotation != 0) || (shear && fShear != 90)) {
FT_Matrix rmatrix, smatrix;
Angle rotationAngle(fRotation);
rmatrix.xx = (FT_Fixed)( rotationAngle.Cosine() * 0x10000);
rmatrix.xy = (FT_Fixed)(-rotationAngle.Sine() * 0x10000);
rmatrix.yx = (FT_Fixed)( rotationAngle.Sine() * 0x10000);
rmatrix.yy = (FT_Fixed)( rotationAngle.Cosine() * 0x10000);
Angle shearAngle(fShear);
smatrix.xx = (FT_Fixed)(0x10000);
smatrix.xy = (FT_Fixed)(-shearAngle.Cosine() * 0x10000);
smatrix.yx = (FT_Fixed)(0);
smatrix.yy = (FT_Fixed)(0x10000);
// Multiply togheter and apply transform
FT_Matrix_Multiply(&rmatrix, &smatrix);
FT_Set_Transform(face, &smatrix, NULL);
}
// fStyle will be unlocked in PutTransformedFace()
return face;
}
static void
fill_context(TextContext *context,
const FreeTypeInstance *ft,
const PgFontObject *fontobj,
const FontRenderMode *mode,
const FT_Face font)
{
context->lib = ft->library;
context->id = (FTC_FaceID)&(fontobj->id);
context->font = font;
context->charmap = ft->cache_charmap;
context->do_transform = 0;
if (mode->style & FT_STYLE_OBLIQUE) {
context->transform = slant_matrix;
context->do_transform = 1;
}
else {
context->transform = unit_matrix;
}
if (mode->render_flags & FT_RFLAG_TRANSFORM) {
FT_Matrix_Multiply(&mode->transform, &context->transform);
context->do_transform = 1;
}
if (mode->rotation_angle != 0) {
FT_Vector unit;
FT_Matrix rotate;
FT_Vector_Unit(&unit, mode->rotation_angle);
rotate.xx = unit.x; /* cos(angle) */
rotate.xy = -unit.y; /* -sin(angle) */
rotate.yx = unit.y; /* sin(angle) */
rotate.yy = unit.x; /* cos(angle) */
FT_Matrix_Multiply(&rotate, &context->transform);
context->do_transform = 1;
}
}
void simGetPenPos(cdCanvas* canvas, int x, int y, const char* s, int len, FT_Matrix *matrix, FT_Vector *pen)
{
int ox = x, oy = y;
int old_invert_yaxis = canvas->invert_yaxis;
int w, h, ascent, height, baseline;
cdSimGetTextSizeFT(canvas->ctxcanvas, s, len, &w, &h);
cdSimGetFontDimFT(canvas->ctxcanvas, NULL, &height, &ascent, NULL);
baseline = height - ascent;
/* in this case we are always upwards */
/* move to bottom left */
canvas->invert_yaxis = 0;
cdTextTranslatePoint(canvas, x, y, w, h, baseline, &x, &y);
canvas->invert_yaxis = old_invert_yaxis;
/* move to the base line */
y += baseline;
/* set up matrix */
matrix->xx = (FT_Fixed)0x10000L;
matrix->xy = (FT_Fixed)0;
matrix->yx = (FT_Fixed)0;
matrix->yy = (FT_Fixed)0x10000L;
if (canvas->text_orientation)
{
FT_Matrix text_matrix;
double cos_theta = cos(canvas->text_orientation*CD_DEG2RAD);
double sin_theta = sin(canvas->text_orientation*CD_DEG2RAD);
/* manually rotate the initial point */
canvas->invert_yaxis = 0;
cdRotatePoint(canvas, x, y, ox, oy, &x, &y, sin_theta, cos_theta);
canvas->invert_yaxis = old_invert_yaxis;
text_matrix.xx = (FT_Fixed)( cos_theta*0x10000L);
text_matrix.xy = (FT_Fixed)(-sin_theta*0x10000L);
text_matrix.yx = (FT_Fixed)( sin_theta*0x10000L);
text_matrix.yy = (FT_Fixed)( cos_theta*0x10000L);
FT_Matrix_Multiply(&text_matrix, matrix);
}
if (canvas->use_matrix)
{
FT_Matrix trans_matrix;
trans_matrix.xx = (FT_Fixed)(canvas->matrix[0]*0x10000L);
trans_matrix.yx = (FT_Fixed)(canvas->matrix[1]*0x10000L);
trans_matrix.xy = (FT_Fixed)(canvas->matrix[2]*0x10000L);
trans_matrix.yy = (FT_Fixed)(canvas->matrix[3]*0x10000L);
FT_Matrix_Multiply(&trans_matrix, matrix);
/* manually transform the initial point */
cdMatrixTransformPoint(canvas->matrix, x, y, &x, &y);
}
/* the pen position in 26.6 scale */
pen->x = x * 64;
pen->y = y * 64;
}
