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Implement composite for the beos backend. Don't map CAIRO_OPERATOR_ADD to B_OP_ADD for now, something's broken there.

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Christian Biesinger 2005-12-26 19:08:53 +00:00
parent 4fe93bcf92
commit f036c28fa3
2 changed files with 104 additions and 1 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2005-12-27 Christian Biesinger <cbiesinger@web.de>
* src/cairo-beos-surface.cpp: Implement composite for the beos
backend. Don't map CAIRO_OPERATOR_ADD to B_OP_ADD for now,
something's broken there.
2005-12-26 Christian Biesinger <cbiesinger@web.de>
* src/cairo-beos-surface.cpp: Don't require that the caller locks

99
src/cairo-beos-surface.cpp
View file

@ -383,13 +383,19 @@ _cairo_op_to_be_op (cairo_operator_t cairo_op,
return true;
case CAIRO_OPERATOR_ADD:
// Does not actually work
#if 1
return false;
#else
*beos_op = B_OP_ADD;
return true;
#endif
case CAIRO_OPERATOR_CLEAR:
// Does not map to B_OP_ERASE - it replaces the dest with the low
// color, instead of transparency; could be done by setting low
// color appropriately.
case CAIRO_OPERATOR_IN:
case CAIRO_OPERATOR_OUT:
case CAIRO_OPERATOR_ATOP:
@ -575,6 +581,97 @@ _cairo_beos_surface_release_dest_image (void *abstract_surface,
cairo_surface_destroy(&image->base);
}
static cairo_int_status_t
_cairo_beos_composite (cairo_operator_t op,
cairo_pattern_t *src,
cairo_pattern_t *mask,
void *dst,
int src_x,
int src_y,
int mask_x,
int mask_y,
int dst_x,
int dst_y,
unsigned int width,
unsigned int height)
{
cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>(
dst);
AutoLockView locker(surface->view);
if (!locker)
return CAIRO_INT_STATUS_SUCCESS;
drawing_mode mode;
if (!_cairo_op_to_be_op(op, &mode))
return CAIRO_INT_STATUS_UNSUPPORTED;
// XXX Masks are not yet supported
if (mask)
return CAIRO_INT_STATUS_UNSUPPORTED;
// XXX should eventually support the others
if (src->type != CAIRO_PATTERN_SURFACE ||
src->extend != CAIRO_EXTEND_NONE)
{
return CAIRO_INT_STATUS_UNSUPPORTED;
}
// Can we maybe support other matrices as well? (scale? if the filter is right)
int itx, ity;
if (!_cairo_matrix_is_integer_translation(&src->matrix, &itx, &ity))
return CAIRO_INT_STATUS_UNSUPPORTED;
BRect srcRect(src_x + itx,
src_y + ity,
src_x + itx + width - 1,
src_y + ity + height - 1);
BRect dstRect(dst_x, dst_y, dst_x + width - 1, dst_y + height - 1);
cairo_surface_t* src_surface = reinterpret_cast<cairo_surface_pattern_t*>(src)->
surface;
if (_cairo_surface_is_image(src_surface)) {
fprintf(stderr, "Composite\n");
// Draw it on screen.
cairo_image_surface_t* img_surface =
reinterpret_cast<cairo_image_surface_t*>(src_surface);
BBitmap* bmp = _cairo_image_surface_to_bitmap(img_surface);
surface->view->PushState();
// If our image rect is only a subrect of the desired size, and we
// aren't using B_OP_ALPHA, then we need to fill the rect first.
if (mode == B_OP_COPY && !bmp->Bounds().Contains(srcRect)) {
rgb_color black = { 0, 0, 0, 0 };
surface->view->SetDrawingMode(mode);
surface->view->SetHighColor(black);
surface->view->FillRect(dstRect);
}
if (mode == B_OP_ALPHA && img_surface->format != CAIRO_FORMAT_ARGB32) {
mode = B_OP_COPY;
}
surface->view->SetDrawingMode(mode);
if (surface->bitmap && surface->bitmap->ColorSpace() == B_RGBA32)
surface->view->SetBlendingMode(B_PIXEL_ALPHA, B_ALPHA_COMPOSITE);
else
surface->view->SetBlendingMode(B_PIXEL_ALPHA, B_ALPHA_OVERLAY);
surface->view->DrawBitmap(bmp, srcRect, dstRect);
surface->view->PopState();
delete bmp;
return CAIRO_INT_STATUS_SUCCESS;
}
return CAIRO_INT_STATUS_UNSUPPORTED;
}
static void
_cairo_beos_fill_rectangle (cairo_beos_surface_t *surface,
cairo_rectangle_t *rect)
@ -699,7 +796,7 @@ static const struct _cairo_surface_backend cairo_beos_surface_backend = {
_cairo_beos_surface_acquire_dest_image,
_cairo_beos_surface_release_dest_image,
NULL, /* clone_similar */
NULL, /* composite */
_cairo_beos_composite, /* composite */
_cairo_beos_fill_rectangles,
NULL, /* composite_trapezoids */
NULL, /* copy_page */