void
rsvg_cairo_clip (RsvgDrawingCtx * ctx, RsvgClipPath * clip, RsvgBbox * bbox)
{
RsvgCairoClipRender *clip_render;
RsvgCairoRender *save = RSVG_CAIRO_RENDER (ctx->render);
cairo_t *cr;
cairo_matrix_t affinesave;
cr = save->cr;
clip_render = RSVG_CAIRO_CLIP_RENDER (rsvg_cairo_clip_render_new (cr, save));
ctx->render = &clip_render->super.super;
/* Horribly dirty hack to have the bbox premultiplied to everything */
if (clip->units == objectBoundingBox) {
cairo_matrix_t bbtransform;
cairo_matrix_init (&bbtransform,
bbox->rect.width,
0,
0,
bbox->rect.height,
bbox->rect.x,
bbox->rect.y);
affinesave = clip->super.state->affine;
cairo_matrix_multiply (&clip->super.state->affine, &bbtransform, &clip->super.state->affine);
}
rsvg_state_push (ctx);
_rsvg_node_draw_children ((RsvgNode *) clip, ctx, 0);
rsvg_state_pop (ctx);
if (clip->units == objectBoundingBox)
clip->super.state->affine = affinesave;
g_assert (clip_render->super.cr_stack == NULL);
g_assert (clip_render->super.bb_stack == NULL);
g_assert (clip_render->super.surfaces_stack == NULL);
g_free (ctx->render);
cairo_clip (cr);
ctx->render = &save->super;
}
static void
rsvg_node_use_draw (RsvgNode * self, RsvgDrawingCtx * ctx, int dominate)
{
RsvgNodeUse *use = (RsvgNodeUse *) self;
RsvgNode *child;
RsvgState *state;
double affine[6];
double x, y, w, h;
x = _rsvg_css_normalize_length (&use->x, ctx, 'h');
y = _rsvg_css_normalize_length (&use->y, ctx, 'v');
w = _rsvg_css_normalize_length (&use->w, ctx, 'h');
h = _rsvg_css_normalize_length (&use->h, ctx, 'v');
rsvg_state_reinherit_top (ctx, self->state, dominate);
child = use->link;
/* If it can find nothing to draw... draw nothing */
if (!child)
return;
else if (rsvg_node_is_ancestor (child, self)) /* or, if we're <use>'ing ourself */
return;
state = rsvg_current_state (ctx);
if (strcmp (child->type->str, "symbol")) {
_rsvg_affine_translate (affine, x, y);
_rsvg_affine_multiply (state->affine, affine, state->affine);
rsvg_push_discrete_layer (ctx);
rsvg_state_push (ctx);
rsvg_node_draw (child, ctx, 1);
rsvg_state_pop (ctx);
rsvg_pop_discrete_layer (ctx);
} else {
RsvgNodeSymbol *symbol = (RsvgNodeSymbol *) child;
if (symbol->vbox.active) {
rsvg_preserve_aspect_ratio
(symbol->preserve_aspect_ratio, symbol->vbox.w, symbol->vbox.h, &w, &h, &x, &y);
_rsvg_affine_translate (affine, x, y);
_rsvg_affine_multiply (state->affine, affine, state->affine);
_rsvg_affine_scale (affine, w / symbol->vbox.w, h / symbol->vbox.h);
_rsvg_affine_multiply (state->affine, affine, state->affine);
_rsvg_affine_translate (affine, -symbol->vbox.x, -symbol->vbox.y);
_rsvg_affine_multiply (state->affine, affine, state->affine);
_rsvg_push_view_box (ctx, symbol->vbox.w, symbol->vbox.h);
rsvg_push_discrete_layer (ctx);
if (!state->overflow || (!state->has_overflow && child->state->overflow))
rsvg_add_clipping_rect (ctx, symbol->vbox.x, symbol->vbox.y,
symbol->vbox.w, symbol->vbox.h);
} else {
_rsvg_affine_translate (affine, x, y);
_rsvg_affine_multiply (state->affine, affine, state->affine);
rsvg_push_discrete_layer (ctx);
}
rsvg_state_push (ctx);
_rsvg_node_draw_children (child, ctx, 1);
rsvg_state_pop (ctx);
rsvg_pop_discrete_layer (ctx);
if (symbol->vbox.active)
_rsvg_pop_view_box (ctx);
}
}
