static cairo_status_t
cpc_line_to (void *closure, const cairo_point_t *point)
{
struct cpc *cpc = static_cast <struct cpc *> (closure);
if (cpc->matrix) {
double x = _cairo_fixed_to_double (point->x);
double y = _cairo_fixed_to_double (point->y);
cairo_matrix_transform_point (cpc->matrix, &x, &y);
cpc->skPath.lineTo (SkFloatToScalar (x), SkFloatToScalar (y));
} else {
cpc->skPath.lineTo (CAIRO_FIXED_TO_SK_SCALAR (point->x),
CAIRO_FIXED_TO_SK_SCALAR (point->y));
}
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
cpc_curve_to (void *closure,
const cairo_point_t *p0,
const cairo_point_t *p1,
const cairo_point_t *p2)
{
struct cpc *cpc = static_cast <struct cpc *> (closure);
if (cpc->matrix) {
double x0 = _cairo_fixed_to_double (p0->x);
double y0 = _cairo_fixed_to_double (p0->y);
double x1 = _cairo_fixed_to_double (p1->x);
double y1 = _cairo_fixed_to_double (p1->y);
double x2 = _cairo_fixed_to_double (p2->x);
double y2 = _cairo_fixed_to_double (p2->y);
cairo_matrix_transform_point (cpc->matrix, &x0, &y0);
cairo_matrix_transform_point (cpc->matrix, &x1, &y1);
cairo_matrix_transform_point (cpc->matrix, &x2, &y2);
cpc->skPath.cubicTo (SkFloatToScalar (x0),
SkFloatToScalar (y0),
SkFloatToScalar (x1),
SkFloatToScalar (y1),
SkFloatToScalar (x2),
SkFloatToScalar (y2));
} else {
cpc->skPath.cubicTo (CAIRO_FIXED_TO_SK_SCALAR (p0->x),
CAIRO_FIXED_TO_SK_SCALAR (p0->y),
CAIRO_FIXED_TO_SK_SCALAR (p1->x),
CAIRO_FIXED_TO_SK_SCALAR (p1->y),
CAIRO_FIXED_TO_SK_SCALAR (p2->x),
CAIRO_FIXED_TO_SK_SCALAR (p2->y));
}
return CAIRO_STATUS_SUCCESS;
}
static SkShader*
source_to_sk_shader (cairo_skia_context_t *cr,
const cairo_pattern_t *pattern)
{
SkShader *shader = NULL;
if (pattern->type == CAIRO_PATTERN_TYPE_SOLID) {
cairo_solid_pattern_t *solid = (cairo_solid_pattern_t *) pattern;
return new SkColorShader (color_to_sk (solid->color));
} else if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
cairo_surface_t *surface = surface_from_pattern (pattern);
cr->source = cairo_surface_reference (surface);
if (surface->type == CAIRO_SURFACE_TYPE_SKIA) {
cairo_skia_surface_t *esurf = (cairo_skia_surface_t *) surface;
shader = SkShader::CreateBitmapShader (*esurf->bitmap,
extend_to_sk (pattern->extend),
extend_to_sk (pattern->extend));
} else {
SkBitmap bitmap;
if (! _cairo_surface_is_image (surface)) {
cairo_status_t status;
status = _cairo_surface_acquire_source_image (surface,
&cr->source_image,
&cr->source_extra);
if (status)
return NULL;
surface = &cr->source_image->base;
}
if (unlikely (! surface_to_sk_bitmap (surface, bitmap)))
return NULL;
shader = SkShader::CreateBitmapShader (bitmap,
extend_to_sk (pattern->extend),
extend_to_sk (pattern->extend));
}
} else if (pattern->type == CAIRO_PATTERN_TYPE_LINEAR
/* || pattern->type == CAIRO_PATTERN_TYPE_RADIAL */)
{
cairo_gradient_pattern_t *gradient = (cairo_gradient_pattern_t *) pattern;
SkColor colors_stack[10];
SkScalar pos_stack[10];
SkColor *colors = colors_stack;
SkScalar *pos = pos_stack;
if (gradient->n_stops > 10) {
colors = new SkColor[gradient->n_stops];
pos = new SkScalar[gradient->n_stops];
}
for (unsigned int i = 0; i < gradient->n_stops; i++) {
pos[i] = CAIRO_FIXED_TO_SK_SCALAR (gradient->stops[i].offset);
colors[i] = color_stop_to_sk (gradient->stops[i].color);
}
if (pattern->type == CAIRO_PATTERN_TYPE_LINEAR) {
cairo_linear_pattern_t *linear = (cairo_linear_pattern_t *) gradient;
SkPoint points[2];
points[0].set (SkFloatToScalar (linear->pd1.x),
SkFloatToScalar (linear->pd1.y));
points[1].set (SkFloatToScalar (linear->pd2.x),
SkFloatToScalar (linear->pd2.y));
shader = SkGradientShader::CreateLinear (points, colors, pos, gradient->n_stops,
extend_to_sk (pattern->extend));
} else {
// XXX todo -- implement real radial shaders in Skia
}
if (gradient->n_stops > 10) {
delete [] colors;
delete [] pos;
}
}
if (shader && ! _cairo_matrix_is_identity (&pattern->matrix))
shader->setLocalMatrix (matrix_inverse_to_sk (pattern->matrix));
return shader;
}