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Implement.

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reviewed by: otaylor
This commit is contained in:
Tor Lillqvist 2005-06-28 15:03:53 +00:00
parent 6d65ee6fc4
commit e7442a4523
2 changed files with 136 additions and 6 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2005-06-28 T Rowley <tim.rowley@gmail.com>
reviewed by: otaylor
* src/cairo-win32-font.c (_cairo_win32_scaled_font_glyph_path):
Implement.
2005-06-28 Owen Taylor <otaylor@redhat.com>
* src/cairo-xlib-surface.c (_cairo_xlib_surface_create_internal): Also

135
src/cairo-win32-font.c
View file

@ -1101,13 +1101,136 @@ _cairo_win32_scaled_font_show_glyphs (void *abstract_font,
}
}
static cairo_status_t
_cairo_win32_scaled_font_glyph_path (void *abstract_font,
cairo_glyph_t *glyphs,
int num_glyphs,
cairo_path_fixed_t *path)
static cairo_fixed_t
_cairo_fixed_from_FIXED (FIXED f)
{
return CAIRO_STATUS_SUCCESS;
return *((cairo_fixed_t *)&f);
}
static cairo_status_t
_cairo_win32_scaled_font_glyph_path (void *abstract_font,
cairo_glyph_t *glyphs,
int num_glyphs,
cairo_path_fixed_t *path)
{
static const MAT2 matrix = { { 0, 1 }, { 0, 0 }, { 0, 0 }, { 0, -1 } };
cairo_win32_scaled_font_t *scaled_font = abstract_font;
cairo_status_t status;
GLYPHMETRICS metrics;
HDC hdc;
int i;
hdc = _get_global_font_dc ();
if (!hdc)
return CAIRO_STATUS_NO_MEMORY;
status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc);
if (status)
return status;
for (i = 0; i < num_glyphs; i++)
{
DWORD bytesGlyph;
unsigned char *buffer, *ptr;
cairo_fixed_t x = _cairo_fixed_from_double (glyphs[i].x);
cairo_fixed_t y = _cairo_fixed_from_double (glyphs[i].y);
bytesGlyph = GetGlyphOutlineW (hdc, glyphs[i].index,
GGO_NATIVE | GGO_GLYPH_INDEX,
&metrics, 0, NULL, &matrix);
if (bytesGlyph == GDI_ERROR) {
status = _cairo_win32_print_gdi_error ("_cairo_win32_scaled_font_glyph_path");
goto FAIL;
}
ptr = buffer = malloc (bytesGlyph);
if (!buffer) {
status = CAIRO_STATUS_NO_MEMORY;
goto FAIL;
}
if (GetGlyphOutlineW (hdc, glyphs[i].index,
GGO_NATIVE | GGO_GLYPH_INDEX,
&metrics, bytesGlyph, buffer, &matrix) == GDI_ERROR) {
status = _cairo_win32_print_gdi_error ("_cairo_win32_scaled_font_glyph_path");
free (buffer);
goto FAIL;
}
while (ptr < buffer + bytesGlyph) {
TTPOLYGONHEADER *header = (TTPOLYGONHEADER *)ptr;
unsigned char *endPoly = ptr + header->cb;
ptr += sizeof (TTPOLYGONHEADER);
_cairo_path_fixed_move_to (path,
_cairo_fixed_from_FIXED (header->pfxStart.x) + x,
_cairo_fixed_from_FIXED (header->pfxStart.y) + y);
while (ptr < endPoly) {
TTPOLYCURVE *curve = (TTPOLYCURVE *)ptr;
POINTFX *points = curve->apfx;
int i;
switch (curve->wType) {
case TT_PRIM_LINE:
for (i = 0; i < curve->cpfx; i++) {
_cairo_path_fixed_line_to (path,
_cairo_fixed_from_FIXED (points[i].x) + x,
_cairo_fixed_from_FIXED (points[i].y) + y);
}
break;
case TT_PRIM_QSPLINE:
for (i = 0; i < curve->cpfx - 1; i++) {
cairo_fixed_t p1x, p1y, p2x, p2y, cx, cy, c1x, c1y, c2x, c2y;
_cairo_path_fixed_get_current_point (path, &p1x, &p1y);
cx = _cairo_fixed_from_FIXED (points[i].x) + x;
cy = _cairo_fixed_from_FIXED (points[i].y) + y;
if (i + 1 == curve->cpfx - 1) {
p2x = _cairo_fixed_from_FIXED (points[i + 1].x) + x;
p2y = _cairo_fixed_from_FIXED (points[i + 1].y) + y;
} else {
/* records with more than one curve use interpolation for
control points, per http://support.microsoft.com/kb/q87115/ */
p2x = (cx + _cairo_fixed_from_FIXED (points[i + 1].x) + x) / 2;
p2y = (cy + _cairo_fixed_from_FIXED (points[i + 1].y) + y) / 2;
}
c1x = 2 * cx / 3 + p1x / 3;
c1y = 2 * cy / 3 + p1y / 3;
c2x = 2 * cx / 3 + p2x / 3;
c2y = 2 * cy / 3 + p2y / 3;
_cairo_path_fixed_curve_to (path, c1x, c1y, c2x, c2y, p2x, p2y);
}
break;
case TT_PRIM_CSPLINE:
for (i = 0; i < curve->cpfx - 2; i += 2) {
_cairo_path_fixed_curve_to (path,
_cairo_fixed_from_FIXED (points[i].x) + x,
_cairo_fixed_from_FIXED (points[i].y) + y,
_cairo_fixed_from_FIXED (points[i + 1].x) + x,
_cairo_fixed_from_FIXED (points[i + 1].y) + y,
_cairo_fixed_from_FIXED (points[i + 2].x) + x,
_cairo_fixed_from_FIXED (points[i + 2].y) + y);
}
break;
}
ptr += sizeof(TTPOLYCURVE) + sizeof (POINTFX) * (curve->cpfx - 1);
}
_cairo_path_fixed_close_path (path);
}
free(buffer);
}
FAIL:
cairo_win32_scaled_font_done_font (&scaled_font->base);
return status;
}
const cairo_scaled_font_backend_t cairo_win32_scaled_font_backend = {