#include "cairoint.h"
#include "cairo-error-private.h"
#include "cairo-freed-pool-private.h"
#if HAS_FREED_POOL
static freed_pool_t freed_pattern_pool[4];
#endif
static const cairo_solid_pattern_t _cairo_pattern_nil = {
{ CAIRO_PATTERN_TYPE_SOLID,
CAIRO_REFERENCE_COUNT_INVALID,
CAIRO_STATUS_NO_MEMORY,
{ 0, 0, 0, NULL },
{ 1., 0., 0., 1., 0., 0., },
CAIRO_FILTER_DEFAULT,
CAIRO_EXTEND_GRADIENT_DEFAULT },
};
static const cairo_solid_pattern_t _cairo_pattern_nil_null_pointer = {
{ CAIRO_PATTERN_TYPE_SOLID,
CAIRO_REFERENCE_COUNT_INVALID,
CAIRO_STATUS_NULL_POINTER,
{ 0, 0, 0, NULL },
{ 1., 0., 0., 1., 0., 0., },
CAIRO_FILTER_DEFAULT,
CAIRO_EXTEND_GRADIENT_DEFAULT },
};
const cairo_solid_pattern_t _cairo_pattern_black = {
{ CAIRO_PATTERN_TYPE_SOLID,
CAIRO_REFERENCE_COUNT_INVALID,
CAIRO_STATUS_SUCCESS,
{ 0, 0, 0, NULL },
{ 1., 0., 0., 1., 0., 0., },
CAIRO_FILTER_DEFAULT,
CAIRO_EXTEND_GRADIENT_DEFAULT},
{ 0., 0., 0., 1., 0, 0, 0, 0xffff },
};
const cairo_solid_pattern_t _cairo_pattern_clear = {
{ CAIRO_PATTERN_TYPE_SOLID,
CAIRO_REFERENCE_COUNT_INVALID,
CAIRO_STATUS_SUCCESS,
{ 0, 0, 0, NULL },
{ 1., 0., 0., 1., 0., 0., },
CAIRO_FILTER_DEFAULT,
CAIRO_EXTEND_GRADIENT_DEFAULT},
{ 0., 0., 0., 0., 0, 0, 0, 0 },
};
const cairo_solid_pattern_t _cairo_pattern_white = {
{ CAIRO_PATTERN_TYPE_SOLID,
CAIRO_REFERENCE_COUNT_INVALID,
CAIRO_STATUS_SUCCESS,
{ 0, 0, 0, NULL },
{ 1., 0., 0., 1., 0., 0., },
CAIRO_FILTER_DEFAULT,
CAIRO_EXTEND_GRADIENT_DEFAULT},
{ 1., 1., 1., 1., 0xffff, 0xffff, 0xffff, 0xffff },
};
static cairo_status_t
_cairo_pattern_set_error (cairo_pattern_t *pattern,
cairo_status_t status)
{
if (status == CAIRO_STATUS_SUCCESS)
return status;
_cairo_status_set_error (&pattern->status, status);
return _cairo_error (status);
}
static void
_cairo_pattern_init (cairo_pattern_t *pattern, cairo_pattern_type_t type)
{
#if HAVE_VALGRIND
switch (type) {
case CAIRO_PATTERN_TYPE_SOLID:
VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_solid_pattern_t));
break;
case CAIRO_PATTERN_TYPE_SURFACE:
VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_surface_pattern_t));
break;
case CAIRO_PATTERN_TYPE_LINEAR:
VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_linear_pattern_t));
break;
case CAIRO_PATTERN_TYPE_RADIAL:
VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_radial_pattern_t));
break;
}
#endif
pattern->type = type;
pattern->status = CAIRO_STATUS_SUCCESS;
CAIRO_REFERENCE_COUNT_INIT (&pattern->ref_count, 0);
_cairo_user_data_array_init (&pattern->user_data);
if (type == CAIRO_PATTERN_TYPE_SURFACE)
pattern->extend = CAIRO_EXTEND_SURFACE_DEFAULT;
else
pattern->extend = CAIRO_EXTEND_GRADIENT_DEFAULT;
pattern->filter = CAIRO_FILTER_DEFAULT;
pattern->has_component_alpha = FALSE;
cairo_matrix_init_identity (&pattern->matrix);
}
static cairo_status_t
_cairo_gradient_pattern_init_copy (cairo_gradient_pattern_t *pattern,
const cairo_gradient_pattern_t *other)
{
if (CAIRO_INJECT_FAULT ())
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
if (other->base.type == CAIRO_PATTERN_TYPE_LINEAR)
{
cairo_linear_pattern_t *dst = (cairo_linear_pattern_t *) pattern;
cairo_linear_pattern_t *src = (cairo_linear_pattern_t *) other;
*dst = *src;
}
else
{
cairo_radial_pattern_t *dst = (cairo_radial_pattern_t *) pattern;
cairo_radial_pattern_t *src = (cairo_radial_pattern_t *) other;
*dst = *src;
}
if (other->stops == other->stops_embedded)
pattern->stops = pattern->stops_embedded;
else if (other->stops)
{
pattern->stops = _cairo_malloc_ab (other->stops_size,
sizeof (cairo_gradient_stop_t));
if (unlikely (pattern->stops == NULL)) {
pattern->stops_size = 0;
pattern->n_stops = 0;
return _cairo_pattern_set_error (&pattern->base, CAIRO_STATUS_NO_MEMORY);
}
memcpy (pattern->stops, other->stops,
other->n_stops * sizeof (cairo_gradient_stop_t));
}
return CAIRO_STATUS_SUCCESS;
}
cairo_status_t
_cairo_pattern_init_copy (cairo_pattern_t *pattern,
const cairo_pattern_t *other)
{
if (other->status)
return _cairo_pattern_set_error (pattern, other->status);
switch (other->type) {
case CAIRO_PATTERN_TYPE_SOLID: {
cairo_solid_pattern_t *dst = (cairo_solid_pattern_t *) pattern;
cairo_solid_pattern_t *src = (cairo_solid_pattern_t *) other;
VG (VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_solid_pattern_t)));
*dst = *src;
} break;
case CAIRO_PATTERN_TYPE_SURFACE: {
cairo_surface_pattern_t *dst = (cairo_surface_pattern_t *) pattern;
cairo_surface_pattern_t *src = (cairo_surface_pattern_t *) other;
VG (VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_surface_pattern_t)));
*dst = *src;
cairo_surface_reference (dst->surface);
} break;
case CAIRO_PATTERN_TYPE_LINEAR:
case CAIRO_PATTERN_TYPE_RADIAL: {
cairo_gradient_pattern_t *dst = (cairo_gradient_pattern_t *) pattern;
cairo_gradient_pattern_t *src = (cairo_gradient_pattern_t *) other;
cairo_status_t status;
if (other->type == CAIRO_PATTERN_TYPE_LINEAR) {
VG (VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_linear_pattern_t)));
} else {
VG (VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_radial_pattern_t)));
}
status = _cairo_gradient_pattern_init_copy (dst, src);
if (unlikely (status))
return status;
} break;
}
CAIRO_REFERENCE_COUNT_INIT (&pattern->ref_count, 0);
_cairo_user_data_array_init (&pattern->user_data);
return CAIRO_STATUS_SUCCESS;
}
void
_cairo_pattern_init_static_copy (cairo_pattern_t *pattern,
const cairo_pattern_t *other)
{
int size;
assert (other->status == CAIRO_STATUS_SUCCESS);
switch (other->type) {
default:
ASSERT_NOT_REACHED;
case CAIRO_PATTERN_TYPE_SOLID:
size = sizeof (cairo_solid_pattern_t);
break;
case CAIRO_PATTERN_TYPE_SURFACE:
size = sizeof (cairo_surface_pattern_t);
break;
case CAIRO_PATTERN_TYPE_LINEAR:
size = sizeof (cairo_linear_pattern_t);
break;
case CAIRO_PATTERN_TYPE_RADIAL:
size = sizeof (cairo_radial_pattern_t);
break;
}
memcpy (pattern, other, size);
CAIRO_REFERENCE_COUNT_INIT (&pattern->ref_count, 0);
_cairo_user_data_array_init (&pattern->user_data);
}
cairo_status_t
_cairo_pattern_init_snapshot (cairo_pattern_t *pattern,
const cairo_pattern_t *other)
{
cairo_status_t status;
status = _cairo_pattern_init_copy (pattern, other);
if (unlikely (status))
return status;
if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
cairo_surface_pattern_t *surface_pattern =
(cairo_surface_pattern_t *) pattern;
cairo_surface_t *surface = surface_pattern->surface;
surface_pattern->surface = _cairo_surface_snapshot (surface);
cairo_surface_destroy (surface);
if (surface_pattern->surface->status)
return surface_pattern->surface->status;
}
return CAIRO_STATUS_SUCCESS;
}
void
_cairo_pattern_fini (cairo_pattern_t *pattern)
{
_cairo_user_data_array_fini (&pattern->user_data);
switch (pattern->type) {
case CAIRO_PATTERN_TYPE_SOLID:
break;
case CAIRO_PATTERN_TYPE_SURFACE: {
cairo_surface_pattern_t *surface_pattern =
(cairo_surface_pattern_t *) pattern;
cairo_surface_destroy (surface_pattern->surface);
} break;
case CAIRO_PATTERN_TYPE_LINEAR:
case CAIRO_PATTERN_TYPE_RADIAL: {
cairo_gradient_pattern_t *gradient =
(cairo_gradient_pattern_t *) pattern;
if (gradient->stops && gradient->stops != gradient->stops_embedded)
free (gradient->stops);
} break;
}
#if HAVE_VALGRIND
switch (pattern->type) {
case CAIRO_PATTERN_TYPE_SOLID:
VALGRIND_MAKE_MEM_NOACCESS (pattern, sizeof (cairo_solid_pattern_t));
break;
case CAIRO_PATTERN_TYPE_SURFACE:
VALGRIND_MAKE_MEM_NOACCESS (pattern, sizeof (cairo_surface_pattern_t));
break;
case CAIRO_PATTERN_TYPE_LINEAR:
VALGRIND_MAKE_MEM_NOACCESS (pattern, sizeof (cairo_linear_pattern_t));
break;
case CAIRO_PATTERN_TYPE_RADIAL:
VALGRIND_MAKE_MEM_NOACCESS (pattern, sizeof (cairo_radial_pattern_t));
break;
}
#endif
}
cairo_status_t
_cairo_pattern_create_copy (cairo_pattern_t **pattern_out,
const cairo_pattern_t *other)
{
cairo_pattern_t *pattern;
cairo_status_t status;
if (other->status)
return other->status;
switch (other->type) {
case CAIRO_PATTERN_TYPE_SOLID:
pattern = malloc (sizeof (cairo_solid_pattern_t));
break;
case CAIRO_PATTERN_TYPE_SURFACE:
pattern = malloc (sizeof (cairo_surface_pattern_t));
break;
case CAIRO_PATTERN_TYPE_LINEAR:
pattern = malloc (sizeof (cairo_linear_pattern_t));
break;
case CAIRO_PATTERN_TYPE_RADIAL:
pattern = malloc (sizeof (cairo_radial_pattern_t));
break;
default:
ASSERT_NOT_REACHED;
return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
}
if (unlikely (pattern == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
status = _cairo_pattern_init_copy (pattern, other);
if (unlikely (status)) {
free (pattern);
return status;
}
CAIRO_REFERENCE_COUNT_INIT (&pattern->ref_count, 1);
*pattern_out = pattern;
return CAIRO_STATUS_SUCCESS;
}
void
_cairo_pattern_init_solid (cairo_solid_pattern_t *pattern,
const cairo_color_t *color)
{
_cairo_pattern_init (&pattern->base, CAIRO_PATTERN_TYPE_SOLID);
pattern->color = *color;
}
void
_cairo_pattern_init_for_surface (cairo_surface_pattern_t *pattern,
cairo_surface_t *surface)
{
if (surface->status) {
_cairo_pattern_init (&pattern->base, CAIRO_PATTERN_TYPE_SOLID);
_cairo_pattern_set_error (&pattern->base, surface->status);
return;
}
_cairo_pattern_init (&pattern->base, CAIRO_PATTERN_TYPE_SURFACE);
pattern->surface = cairo_surface_reference (surface);
}
static void
_cairo_pattern_init_gradient (cairo_gradient_pattern_t *pattern,
cairo_pattern_type_t type)
{
_cairo_pattern_init (&pattern->base, type);
pattern->n_stops = 0;
pattern->stops_size = 0;
pattern->stops = NULL;
}
void
_cairo_pattern_init_linear (cairo_linear_pattern_t *pattern,
double x0, double y0, double x1, double y1)
{
_cairo_pattern_init_gradient (&pattern->base, CAIRO_PATTERN_TYPE_LINEAR);
pattern->p1.x = _cairo_fixed_from_double (x0);
pattern->p1.y = _cairo_fixed_from_double (y0);
pattern->p2.x = _cairo_fixed_from_double (x1);
pattern->p2.y = _cairo_fixed_from_double (y1);
}
void
_cairo_pattern_init_radial (cairo_radial_pattern_t *pattern,
double cx0, double cy0, double radius0,
double cx1, double cy1, double radius1)
{
_cairo_pattern_init_gradient (&pattern->base, CAIRO_PATTERN_TYPE_RADIAL);
pattern->c1.x = _cairo_fixed_from_double (cx0);
pattern->c1.y = _cairo_fixed_from_double (cy0);
pattern->r1 = _cairo_fixed_from_double (fabs (radius0));
pattern->c2.x = _cairo_fixed_from_double (cx1);
pattern->c2.y = _cairo_fixed_from_double (cy1);
pattern->r2 = _cairo_fixed_from_double (fabs (radius1));
}
cairo_pattern_t *
_cairo_pattern_create_solid (const cairo_color_t *color)
{
cairo_solid_pattern_t *pattern;
pattern =
_freed_pool_get (&freed_pattern_pool[CAIRO_PATTERN_TYPE_SOLID]);
if (unlikely (pattern == NULL)) {
pattern = malloc (sizeof (cairo_solid_pattern_t));
if (unlikely (pattern == NULL)) {
_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
return (cairo_pattern_t *) &_cairo_pattern_nil;
}
}
_cairo_pattern_init_solid (pattern, color);
CAIRO_REFERENCE_COUNT_INIT (&pattern->base.ref_count, 1);
return &pattern->base;
}
cairo_pattern_t *
_cairo_pattern_create_in_error (cairo_status_t status)
{
cairo_pattern_t *pattern;
if (status == CAIRO_STATUS_NO_MEMORY)
return (cairo_pattern_t *)&_cairo_pattern_nil.base;
CAIRO_MUTEX_INITIALIZE ();
pattern = _cairo_pattern_create_solid (CAIRO_COLOR_BLACK);
if (pattern->status == CAIRO_STATUS_SUCCESS)
status = _cairo_pattern_set_error (pattern, status);
return pattern;
}
cairo_pattern_t *
cairo_pattern_create_rgb (double red, double green, double blue)
{
cairo_color_t color;
red = _cairo_restrict_value (red, 0.0, 1.0);
green = _cairo_restrict_value (green, 0.0, 1.0);
blue = _cairo_restrict_value (blue, 0.0, 1.0);
_cairo_color_init_rgb (&color, red, green, blue);
CAIRO_MUTEX_INITIALIZE ();
return _cairo_pattern_create_solid (&color);
}
slim_hidden_def (cairo_pattern_create_rgb);
cairo_pattern_t *
cairo_pattern_create_rgba (double red, double green, double blue,
double alpha)
{
cairo_color_t color;
red = _cairo_restrict_value (red, 0.0, 1.0);
green = _cairo_restrict_value (green, 0.0, 1.0);
blue = _cairo_restrict_value (blue, 0.0, 1.0);
alpha = _cairo_restrict_value (alpha, 0.0, 1.0);
_cairo_color_init_rgba (&color, red, green, blue, alpha);
CAIRO_MUTEX_INITIALIZE ();
return _cairo_pattern_create_solid (&color);
}
slim_hidden_def (cairo_pattern_create_rgba);
cairo_pattern_t *
cairo_pattern_create_for_surface (cairo_surface_t *surface)
{
cairo_surface_pattern_t *pattern;
if (surface == NULL) {
_cairo_error_throw (CAIRO_STATUS_NULL_POINTER);
return (cairo_pattern_t*) &_cairo_pattern_nil_null_pointer;
}
if (surface->status)
return _cairo_pattern_create_in_error (surface->status);
pattern =
_freed_pool_get (&freed_pattern_pool[CAIRO_PATTERN_TYPE_SURFACE]);
if (unlikely (pattern == NULL)) {
pattern = malloc (sizeof (cairo_surface_pattern_t));
if (unlikely (pattern == NULL)) {
_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
return (cairo_pattern_t *)&_cairo_pattern_nil.base;
}
}
CAIRO_MUTEX_INITIALIZE ();
_cairo_pattern_init_for_surface (pattern, surface);
CAIRO_REFERENCE_COUNT_INIT (&pattern->base.ref_count, 1);
return &pattern->base;
}
slim_hidden_def (cairo_pattern_create_for_surface);
cairo_pattern_t *
cairo_pattern_create_linear (double x0, double y0, double x1, double y1)
{
cairo_linear_pattern_t *pattern;
pattern =
_freed_pool_get (&freed_pattern_pool[CAIRO_PATTERN_TYPE_LINEAR]);
if (unlikely (pattern == NULL)) {
pattern = malloc (sizeof (cairo_linear_pattern_t));
if (unlikely (pattern == NULL)) {
_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
return (cairo_pattern_t *) &_cairo_pattern_nil.base;
}
}
CAIRO_MUTEX_INITIALIZE ();
_cairo_pattern_init_linear (pattern, x0, y0, x1, y1);
CAIRO_REFERENCE_COUNT_INIT (&pattern->base.base.ref_count, 1);
return &pattern->base.base;
}
cairo_pattern_t *
cairo_pattern_create_radial (double cx0, double cy0, double radius0,
double cx1, double cy1, double radius1)
{
cairo_radial_pattern_t *pattern;
pattern =
_freed_pool_get (&freed_pattern_pool[CAIRO_PATTERN_TYPE_RADIAL]);
if (unlikely (pattern == NULL)) {
pattern = malloc (sizeof (cairo_radial_pattern_t));
if (unlikely (pattern == NULL)) {
_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
return (cairo_pattern_t *) &_cairo_pattern_nil.base;
}
}
CAIRO_MUTEX_INITIALIZE ();
_cairo_pattern_init_radial (pattern, cx0, cy0, radius0, cx1, cy1, radius1);
CAIRO_REFERENCE_COUNT_INIT (&pattern->base.base.ref_count, 1);
return &pattern->base.base;
}
cairo_pattern_t *
cairo_pattern_reference (cairo_pattern_t *pattern)
{
if (pattern == NULL ||
CAIRO_REFERENCE_COUNT_IS_INVALID (&pattern->ref_count))
return pattern;
assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&pattern->ref_count));
_cairo_reference_count_inc (&pattern->ref_count);
return pattern;
}
slim_hidden_def (cairo_pattern_reference);
cairo_pattern_type_t
cairo_pattern_get_type (cairo_pattern_t *pattern)
{
return pattern->type;
}
cairo_status_t
cairo_pattern_status (cairo_pattern_t *pattern)
{
return pattern->status;
}
void
cairo_pattern_destroy (cairo_pattern_t *pattern)
{
cairo_pattern_type_t type;
if (pattern == NULL ||
CAIRO_REFERENCE_COUNT_IS_INVALID (&pattern->ref_count))
return;
assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&pattern->ref_count));
if (! _cairo_reference_count_dec_and_test (&pattern->ref_count))
return;
type = pattern->type;
_cairo_pattern_fini (pattern);
_freed_pool_put (&freed_pattern_pool[type], pattern);
}
slim_hidden_def (cairo_pattern_destroy);
unsigned int
cairo_pattern_get_reference_count (cairo_pattern_t *pattern)
{
if (pattern == NULL ||
CAIRO_REFERENCE_COUNT_IS_INVALID (&pattern->ref_count))
return 0;
return CAIRO_REFERENCE_COUNT_GET_VALUE (&pattern->ref_count);
}
void *
cairo_pattern_get_user_data (cairo_pattern_t *pattern,
const cairo_user_data_key_t *key)
{
return _cairo_user_data_array_get_data (&pattern->user_data,
key);
}
cairo_status_t
cairo_pattern_set_user_data (cairo_pattern_t *pattern,
const cairo_user_data_key_t *key,
void *user_data,
cairo_destroy_func_t destroy)
{
if (CAIRO_REFERENCE_COUNT_IS_INVALID (&pattern->ref_count))
return pattern->status;
return _cairo_user_data_array_set_data (&pattern->user_data,
key, user_data, destroy);
}
static cairo_status_t
_cairo_pattern_gradient_grow (cairo_gradient_pattern_t *pattern)
{
cairo_gradient_stop_t *new_stops;
int old_size = pattern->stops_size;
int embedded_size = ARRAY_LENGTH (pattern->stops_embedded);
int new_size = 2 * MAX (old_size, 4);
if (old_size < embedded_size) {
pattern->stops = pattern->stops_embedded;
pattern->stops_size = embedded_size;
return CAIRO_STATUS_SUCCESS;
}
if (CAIRO_INJECT_FAULT ())
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
assert (pattern->n_stops <= pattern->stops_size);
if (pattern->stops == pattern->stops_embedded) {
new_stops = _cairo_malloc_ab (new_size, sizeof (cairo_gradient_stop_t));
if (new_stops)
memcpy (new_stops, pattern->stops, old_size * sizeof (cairo_gradient_stop_t));
} else {
new_stops = _cairo_realloc_ab (pattern->stops,
new_size,
sizeof (cairo_gradient_stop_t));
}
if (unlikely (new_stops == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
pattern->stops = new_stops;
pattern->stops_size = new_size;
return CAIRO_STATUS_SUCCESS;
}
static void
_cairo_pattern_add_color_stop (cairo_gradient_pattern_t *pattern,
double offset,
double red,
double green,
double blue,
double alpha)
{
cairo_gradient_stop_t *stops;
unsigned int i;
if (pattern->n_stops >= pattern->stops_size) {
cairo_status_t status = _cairo_pattern_gradient_grow (pattern);
if (unlikely (status)) {
status = _cairo_pattern_set_error (&pattern->base, status);
return;
}
}
stops = pattern->stops;
for (i = 0; i < pattern->n_stops; i++)
{
if (offset < stops[i].offset)
{
memmove (&stops[i + 1], &stops[i],
sizeof (cairo_gradient_stop_t) * (pattern->n_stops - i));
break;
}
}
stops[i].offset = offset;
stops[i].color.red = red;
stops[i].color.green = green;
stops[i].color.blue = blue;
stops[i].color.alpha = alpha;
stops[i].color.red_short = _cairo_color_double_to_short (red);
stops[i].color.green_short = _cairo_color_double_to_short (green);
stops[i].color.blue_short = _cairo_color_double_to_short (blue);
stops[i].color.alpha_short = _cairo_color_double_to_short (alpha);
pattern->n_stops++;
}
void
cairo_pattern_add_color_stop_rgb (cairo_pattern_t *pattern,
double offset,
double red,
double green,
double blue)
{
if (pattern->status)
return;
if (pattern->type != CAIRO_PATTERN_TYPE_LINEAR &&
pattern->type != CAIRO_PATTERN_TYPE_RADIAL)
{
_cairo_pattern_set_error (pattern, CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
return;
}
offset = _cairo_restrict_value (offset, 0.0, 1.0);
red = _cairo_restrict_value (red, 0.0, 1.0);
green = _cairo_restrict_value (green, 0.0, 1.0);
blue = _cairo_restrict_value (blue, 0.0, 1.0);
_cairo_pattern_add_color_stop ((cairo_gradient_pattern_t *) pattern,
offset, red, green, blue, 1.0);
}
void
cairo_pattern_add_color_stop_rgba (cairo_pattern_t *pattern,
double offset,
double red,
double green,
double blue,
double alpha)
{
if (pattern->status)
return;
if (pattern->type != CAIRO_PATTERN_TYPE_LINEAR &&
pattern->type != CAIRO_PATTERN_TYPE_RADIAL)
{
_cairo_pattern_set_error (pattern, CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
return;
}
offset = _cairo_restrict_value (offset, 0.0, 1.0);
red = _cairo_restrict_value (red, 0.0, 1.0);
green = _cairo_restrict_value (green, 0.0, 1.0);
blue = _cairo_restrict_value (blue, 0.0, 1.0);
alpha = _cairo_restrict_value (alpha, 0.0, 1.0);
_cairo_pattern_add_color_stop ((cairo_gradient_pattern_t *) pattern,
offset, red, green, blue, alpha);
}
void
cairo_pattern_set_matrix (cairo_pattern_t *pattern,
const cairo_matrix_t *matrix)
{
cairo_matrix_t inverse;
cairo_status_t status;
if (pattern->status)
return;
if (memcmp (&pattern->matrix, matrix, sizeof (cairo_matrix_t)) == 0)
return;
pattern->matrix = *matrix;
inverse = *matrix;
status = cairo_matrix_invert (&inverse);
if (unlikely (status))
status = _cairo_pattern_set_error (pattern, status);
}
slim_hidden_def (cairo_pattern_set_matrix);
void
cairo_pattern_get_matrix (cairo_pattern_t *pattern, cairo_matrix_t *matrix)
{
*matrix = pattern->matrix;
}
void
cairo_pattern_set_filter (cairo_pattern_t *pattern, cairo_filter_t filter)
{
if (pattern->status)
return;
pattern->filter = filter;
}
cairo_filter_t
cairo_pattern_get_filter (cairo_pattern_t *pattern)
{
return pattern->filter;
}
void
cairo_pattern_set_extend (cairo_pattern_t *pattern, cairo_extend_t extend)
{
if (pattern->status)
return;
pattern->extend = extend;
}
cairo_extend_t
cairo_pattern_get_extend (cairo_pattern_t *pattern)
{
return pattern->extend;
}
slim_hidden_def (cairo_pattern_get_extend);
void
_cairo_pattern_transform (cairo_pattern_t *pattern,
const cairo_matrix_t *ctm_inverse)
{
if (pattern->status)
return;
cairo_matrix_multiply (&pattern->matrix, ctm_inverse, &pattern->matrix);
}
static void
_cairo_linear_pattern_classify (cairo_linear_pattern_t *pattern,
double offset_x,
double offset_y,
int width,
int height,
cairo_bool_t *is_horizontal,
cairo_bool_t *is_vertical)
{
cairo_point_double_t point0, point1;
double a, b, c, d, tx, ty;
double scale, start, dx, dy;
cairo_fixed_t factors[3];
int i;
point0.x = _cairo_fixed_to_double (pattern->p1.x);
point0.y = _cairo_fixed_to_double (pattern->p1.y);
point1.x = _cairo_fixed_to_double (pattern->p2.x);
point1.y = _cairo_fixed_to_double (pattern->p2.y);
_cairo_matrix_get_affine (&pattern->base.base.matrix,
&a, &b, &c, &d, &tx, &ty);
dx = point1.x - point0.x;
dy = point1.y - point0.y;
scale = dx * dx + dy * dy;
scale = (scale) ? 1.0 / scale : 1.0;
start = dx * point0.x + dy * point0.y;
for (i = 0; i < 3; i++) {
double qx_device = (i % 2) * (width - 1) + offset_x;
double qy_device = (i / 2) * (height - 1) + offset_y;
double qx = a * qx_device + c * qy_device + tx;
double qy = b * qx_device + d * qy_device + ty;
factors[i] = _cairo_fixed_from_double (((dx * qx + dy * qy) - start) * scale);
}
*is_vertical = factors[1] == factors[0];
*is_horizontal = factors[2] == factors[0];
}
static cairo_int_status_t
_cairo_pattern_acquire_surface_for_gradient (const cairo_gradient_pattern_t *pattern,
cairo_surface_t *dst,
int x,
int y,
unsigned int width,
unsigned int height,
cairo_surface_t **out,
cairo_surface_attributes_t *attr)
{
cairo_image_surface_t *image;
pixman_image_t *pixman_image;
pixman_transform_t pixman_transform;
cairo_status_t status;
cairo_bool_t repeat = FALSE;
cairo_bool_t opaque = TRUE;
pixman_gradient_stop_t pixman_stops_static[2];
pixman_gradient_stop_t *pixman_stops = pixman_stops_static;
unsigned int i;
int clone_offset_x, clone_offset_y;
cairo_matrix_t matrix = pattern->base.matrix;
if (CAIRO_INJECT_FAULT ())
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
if (pattern->n_stops > ARRAY_LENGTH(pixman_stops_static)) {
pixman_stops = _cairo_malloc_ab (pattern->n_stops,
sizeof(pixman_gradient_stop_t));
if (unlikely (pixman_stops == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
for (i = 0; i < pattern->n_stops; i++) {
pixman_stops[i].x = _cairo_fixed_16_16_from_double (pattern->stops[i].offset);
pixman_stops[i].color.red = pattern->stops[i].color.red_short;
pixman_stops[i].color.green = pattern->stops[i].color.green_short;
pixman_stops[i].color.blue = pattern->stops[i].color.blue_short;
pixman_stops[i].color.alpha = pattern->stops[i].color.alpha_short;
if (! CAIRO_ALPHA_SHORT_IS_OPAQUE (pixman_stops[i].color.alpha))
opaque = FALSE;
}
if (pattern->base.type == CAIRO_PATTERN_TYPE_LINEAR)
{
cairo_linear_pattern_t *linear = (cairo_linear_pattern_t *) pattern;
pixman_point_fixed_t p1, p2;
cairo_fixed_t xdim, ydim;
xdim = linear->p2.x - linear->p1.x;
ydim = linear->p2.y - linear->p1.y;
#define PIXMAN_MAX_INT ((pixman_fixed_1 >> 1) - pixman_fixed_e)
if (_cairo_fixed_integer_ceil (xdim) > PIXMAN_MAX_INT ||
_cairo_fixed_integer_ceil (ydim) > PIXMAN_MAX_INT)
{
double sf;
if (xdim > ydim)
sf = PIXMAN_MAX_INT / _cairo_fixed_to_double (xdim);
else
sf = PIXMAN_MAX_INT / _cairo_fixed_to_double (ydim);
p1.x = _cairo_fixed_16_16_from_double (_cairo_fixed_to_double (linear->p1.x) * sf);
p1.y = _cairo_fixed_16_16_from_double (_cairo_fixed_to_double (linear->p1.y) * sf);
p2.x = _cairo_fixed_16_16_from_double (_cairo_fixed_to_double (linear->p2.x) * sf);
p2.y = _cairo_fixed_16_16_from_double (_cairo_fixed_to_double (linear->p2.y) * sf);
cairo_matrix_scale (&matrix, sf, sf);
}
else
{
p1.x = _cairo_fixed_to_16_16 (linear->p1.x);
p1.y = _cairo_fixed_to_16_16 (linear->p1.y);
p2.x = _cairo_fixed_to_16_16 (linear->p2.x);
p2.y = _cairo_fixed_to_16_16 (linear->p2.y);
}
pixman_image = pixman_image_create_linear_gradient (&p1, &p2,
pixman_stops,
pattern->n_stops);
}
else
{
cairo_radial_pattern_t *radial = (cairo_radial_pattern_t *) pattern;
pixman_point_fixed_t c1, c2;
pixman_fixed_t r1, r2;
c1.x = _cairo_fixed_to_16_16 (radial->c1.x);
c1.y = _cairo_fixed_to_16_16 (radial->c1.y);
r1 = _cairo_fixed_to_16_16 (radial->r1);
c2.x = _cairo_fixed_to_16_16 (radial->c2.x);
c2.y = _cairo_fixed_to_16_16 (radial->c2.y);
r2 = _cairo_fixed_to_16_16 (radial->r2);
pixman_image = pixman_image_create_radial_gradient (&c1, &c2,
r1, r2,
pixman_stops,
pattern->n_stops);
}
if (pixman_stops != pixman_stops_static)
free (pixman_stops);
if (unlikely (pixman_image == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
if (_cairo_surface_is_image (dst))
{
image = (cairo_image_surface_t *)
_cairo_image_surface_create_for_pixman_image (pixman_image,
PIXMAN_a8r8g8b8);
if (image->base.status)
{
pixman_image_unref (pixman_image);
return image->base.status;
}
attr->x_offset = attr->y_offset = 0;
attr->matrix = matrix;
attr->extend = pattern->base.extend;
attr->filter = CAIRO_FILTER_NEAREST;
attr->has_component_alpha = pattern->base.has_component_alpha;
*out = &image->base;
return CAIRO_STATUS_SUCCESS;
}
if (pattern->base.type == CAIRO_PATTERN_TYPE_LINEAR) {
cairo_bool_t is_horizontal;
cairo_bool_t is_vertical;
_cairo_linear_pattern_classify ((cairo_linear_pattern_t *)pattern,
x, y, width, height,
&is_horizontal, &is_vertical);
if (is_horizontal) {
height = 1;
repeat = TRUE;
}
if (is_vertical && width > 8) {
width = 8;
repeat = TRUE;
}
}
if (! pixman_image_set_filter (pixman_image, PIXMAN_FILTER_BILINEAR,
NULL, 0))
{
pixman_image_unref (pixman_image);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
image = (cairo_image_surface_t *)
cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
if (image->base.status) {
pixman_image_unref (pixman_image);
return image->base.status;
}
_cairo_matrix_to_pixman_matrix (&matrix, &pixman_transform,
width/2., height/2.);
if (!pixman_image_set_transform (pixman_image, &pixman_transform)) {
cairo_surface_destroy (&image->base);
pixman_image_unref (pixman_image);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
switch (pattern->base.extend) {
case CAIRO_EXTEND_NONE:
pixman_image_set_repeat (pixman_image, PIXMAN_REPEAT_NONE);
break;
case CAIRO_EXTEND_REPEAT:
pixman_image_set_repeat (pixman_image, PIXMAN_REPEAT_NORMAL);
break;
case CAIRO_EXTEND_REFLECT:
pixman_image_set_repeat (pixman_image, PIXMAN_REPEAT_REFLECT);
break;
case CAIRO_EXTEND_PAD:
pixman_image_set_repeat (pixman_image, PIXMAN_REPEAT_PAD);
break;
}
pixman_image_composite32 (PIXMAN_OP_SRC,
pixman_image,
NULL,
image->pixman_image,
x, y,
0, 0,
0, 0,
width, height);
pixman_image_unref (pixman_image);
_cairo_debug_check_image_surface_is_defined (&image->base);
status = _cairo_surface_clone_similar (dst, &image->base,
0, 0, width, height,
&clone_offset_x,
&clone_offset_y,
out);
cairo_surface_destroy (&image->base);
attr->x_offset = -x;
attr->y_offset = -y;
cairo_matrix_init_identity (&attr->matrix);
attr->extend = repeat ? CAIRO_EXTEND_REPEAT : CAIRO_EXTEND_NONE;
attr->filter = CAIRO_FILTER_NEAREST;
attr->has_component_alpha = pattern->base.has_component_alpha;
return status;
}
#define MAX_SURFACE_CACHE_SIZE 16
static struct {
struct _cairo_pattern_solid_surface_cache{
cairo_color_t color;
cairo_surface_t *surface;
} cache[MAX_SURFACE_CACHE_SIZE];
int size;
} solid_surface_cache;
static cairo_bool_t
_cairo_pattern_solid_surface_matches (
const struct _cairo_pattern_solid_surface_cache *cache,
const cairo_solid_pattern_t *pattern,
cairo_surface_t *dst)
{
if (cairo_surface_get_content (cache->surface) != _cairo_color_get_content (&pattern->color))
return FALSE;
if (CAIRO_REFERENCE_COUNT_GET_VALUE (&cache->surface->ref_count) != 1)
return FALSE;
if (! _cairo_surface_is_similar (cache->surface, dst))
return FALSE;
return TRUE;
}
static cairo_bool_t
_cairo_pattern_solid_surface_matches_color (
const struct _cairo_pattern_solid_surface_cache *cache,
const cairo_solid_pattern_t *pattern,
cairo_surface_t *dst)
{
if (! _cairo_color_equal (&cache->color, &pattern->color))
return FALSE;
return _cairo_pattern_solid_surface_matches (cache, pattern, dst);
}
static cairo_int_status_t
_cairo_pattern_acquire_surface_for_solid (const cairo_solid_pattern_t *pattern,
cairo_surface_t *dst,
int x,
int y,
unsigned int width,
unsigned int height,
cairo_surface_t **out,
cairo_surface_attributes_t *attribs)
{
static int i;
cairo_surface_t *surface, *to_destroy = NULL;
cairo_status_t status;
CAIRO_MUTEX_LOCK (_cairo_pattern_solid_surface_cache_lock);
if (i < solid_surface_cache.size &&
_cairo_pattern_solid_surface_matches_color (&solid_surface_cache.cache[i],
pattern,
dst))
{
goto DONE;
}
for (i = 0 ; i < solid_surface_cache.size; i++) {
if (_cairo_pattern_solid_surface_matches_color (&solid_surface_cache.cache[i],
pattern,
dst))
{
goto DONE;
}
}
surface = NULL;
if (solid_surface_cache.size == MAX_SURFACE_CACHE_SIZE) {
i = rand () % MAX_SURFACE_CACHE_SIZE;
surface = solid_surface_cache.cache[i].surface;
if (_cairo_pattern_solid_surface_matches (&solid_surface_cache.cache[i],
pattern,
dst))
{
status = _cairo_surface_repaint_solid_pattern_surface (dst, surface, pattern);
if (unlikely (status))
goto EVICT;
cairo_surface_reference (surface);
}
else
{
EVICT:
surface = NULL;
}
}
if (surface == NULL) {
surface = _cairo_surface_create_solid_pattern_surface (dst, pattern);
if (surface == NULL) {
status = CAIRO_INT_STATUS_UNSUPPORTED;
goto UNLOCK;
}
if (unlikely (surface->status)) {
status = surface->status;
goto UNLOCK;
}
if (unlikely (! _cairo_surface_is_similar (surface, dst)))
{
*out = surface;
goto NOCACHE;
}
}
if (i == solid_surface_cache.size)
solid_surface_cache.size++;
to_destroy = solid_surface_cache.cache[i].surface;
solid_surface_cache.cache[i].surface = surface;
solid_surface_cache.cache[i].color = pattern->color;
DONE:
*out = cairo_surface_reference (solid_surface_cache.cache[i].surface);
NOCACHE:
attribs->x_offset = attribs->y_offset = 0;
cairo_matrix_init_identity (&attribs->matrix);
attribs->extend = CAIRO_EXTEND_REPEAT;
attribs->filter = CAIRO_FILTER_NEAREST;
attribs->has_component_alpha = pattern->base.has_component_alpha;
status = CAIRO_STATUS_SUCCESS;
UNLOCK:
CAIRO_MUTEX_UNLOCK (_cairo_pattern_solid_surface_cache_lock);
if (to_destroy)
cairo_surface_destroy (to_destroy);
return status;
}
static void
_cairo_pattern_reset_solid_surface_cache (void)
{
CAIRO_MUTEX_LOCK (_cairo_pattern_solid_surface_cache_lock);
while (solid_surface_cache.size) {
cairo_surface_t *surface;
solid_surface_cache.size--;
surface = solid_surface_cache.cache[solid_surface_cache.size].surface;
solid_surface_cache.cache[solid_surface_cache.size].surface = NULL;
CAIRO_MUTEX_UNLOCK (_cairo_pattern_solid_surface_cache_lock);
cairo_surface_destroy (surface);
CAIRO_MUTEX_LOCK (_cairo_pattern_solid_surface_cache_lock);
}
CAIRO_MUTEX_UNLOCK (_cairo_pattern_solid_surface_cache_lock);
}
static void
_extents_to_linear_parameter (const cairo_linear_pattern_t *linear,
const cairo_rectangle_int_t *extents,
double t[2])
{
double t0, tdx, tdy;
double p1x, p1y, pdx, pdy, invsqnorm;
p1x = _cairo_fixed_to_double (linear->p1.x);
p1y = _cairo_fixed_to_double (linear->p1.y);
pdx = _cairo_fixed_to_double (linear->p2.x) - p1x;
pdy = _cairo_fixed_to_double (linear->p2.y) - p1y;
invsqnorm = 1.0 / (pdx * pdx + pdy * pdy);
pdx *= invsqnorm;
pdy *= invsqnorm;
t0 = (extents->x - p1x) * pdx + (extents->y - p1y) * pdy;
tdx = extents->width * pdx;
tdy = extents->height * pdy;
t[0] = t[1] = t0;
if (tdx < 0)
t[0] += tdx;
else
t[1] += tdx;
if (tdy < 0)
t[0] += tdy;
else
t[1] += tdy;
}
static cairo_bool_t
_linear_pattern_is_degenerate (const cairo_linear_pattern_t *linear)
{
return linear->p1.x == linear->p2.x && linear->p1.y == linear->p2.y;
}
static cairo_bool_t
_radial_pattern_is_degenerate (const cairo_radial_pattern_t *radial)
{
return radial->r1 == radial->r2 &&
(radial->r1 == 0 ||
(radial->c1.x == radial->c2.x && radial->c1.y == radial->c2.y));
}
static cairo_bool_t
_gradient_is_clear (const cairo_gradient_pattern_t *gradient,
const cairo_rectangle_int_t *extents)
{
unsigned int i;
assert (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR ||
gradient->base.type == CAIRO_PATTERN_TYPE_RADIAL);
if (gradient->n_stops == 0 ||
(gradient->base.extend == CAIRO_EXTEND_NONE &&
gradient->stops[0].offset == gradient->stops[gradient->n_stops - 1].offset))
return TRUE;
if (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR) {
if (gradient->base.extend == CAIRO_EXTEND_NONE) {
cairo_linear_pattern_t *linear = (cairo_linear_pattern_t *) gradient;
if (_linear_pattern_is_degenerate (linear))
return TRUE;
if (extents != NULL) {
double t[2];
_extents_to_linear_parameter (linear, extents, t);
if ((t[0] <= 0.0 && t[1] <= 0.0) || (t[0] >= 1.0 && t[1] >= 1.0))
return TRUE;
}
}
} else {
cairo_radial_pattern_t *radial = (cairo_radial_pattern_t *) gradient;
if (_radial_pattern_is_degenerate (radial))
return TRUE;
}
for (i = 0; i < gradient->n_stops; i++)
if (! CAIRO_COLOR_IS_CLEAR (&gradient->stops[i].color))
return FALSE;
return TRUE;
}
static void
_gradient_color_average (const cairo_gradient_pattern_t *gradient,
cairo_color_t *color)
{
double delta0, delta1;
double r, g, b, a;
unsigned int i, start = 1, end;
assert (gradient->n_stops > 0);
assert (gradient->base.extend != CAIRO_EXTEND_NONE);
if (gradient->n_stops == 1) {
_cairo_color_init_rgba (color,
gradient->stops[0].color.red,
gradient->stops[0].color.green,
gradient->stops[0].color.blue,
gradient->stops[0].color.alpha);
return;
}
end = gradient->n_stops - 1;
switch (gradient->base.extend) {
case CAIRO_EXTEND_REPEAT:
delta0 = 1.0 + gradient->stops[1].offset - gradient->stops[end].offset;
delta1 = 1.0 + gradient->stops[0].offset - gradient->stops[end-1].offset;
break;
case CAIRO_EXTEND_REFLECT:
delta0 = gradient->stops[0].offset + gradient->stops[1].offset;
delta1 = 2.0 - gradient->stops[end-1].offset - gradient->stops[end].offset;
break;
case CAIRO_EXTEND_PAD:
delta0 = delta1 = 1.0;
start = end;
break;
case CAIRO_EXTEND_NONE:
default:
ASSERT_NOT_REACHED;
_cairo_color_init_rgba (color, 0, 0, 0, 0);
return;
}
r = delta0 * gradient->stops[0].color.red;
g = delta0 * gradient->stops[0].color.green;
b = delta0 * gradient->stops[0].color.blue;
a = delta0 * gradient->stops[0].color.alpha;
for (i = start; i < end; ++i) {
double delta = gradient->stops[i+1].offset - gradient->stops[i-1].offset;
r += delta * gradient->stops[i].color.red;
g += delta * gradient->stops[i].color.green;
b += delta * gradient->stops[i].color.blue;
a += delta * gradient->stops[i].color.alpha;
}
r += delta1 * gradient->stops[end].color.red;
g += delta1 * gradient->stops[end].color.green;
b += delta1 * gradient->stops[end].color.blue;
a += delta1 * gradient->stops[end].color.alpha;
_cairo_color_init_rgba (color, r * .5, g * .5, b * .5, a * .5);
}
cairo_bool_t
_cairo_gradient_pattern_is_solid (const cairo_gradient_pattern_t *gradient,
const cairo_rectangle_int_t *extents,
cairo_color_t *color)
{
unsigned int i;
assert (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR ||
gradient->base.type == CAIRO_PATTERN_TYPE_RADIAL);
if (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR) {
cairo_linear_pattern_t *linear = (cairo_linear_pattern_t *) gradient;
if (_linear_pattern_is_degenerate (linear)) {
_gradient_color_average (gradient, color);
return TRUE;
}
if (gradient->base.extend == CAIRO_EXTEND_NONE) {
double t[2];
if (extents == NULL)
return FALSE;
_extents_to_linear_parameter (linear, extents, t);
if (t[0] < 0.0 || t[1] > 1.0)
return FALSE;
}
} else
return FALSE;
for (i = 1; i < gradient->n_stops; i++)
if (! _cairo_color_stop_equal (&gradient->stops[0].color,
&gradient->stops[i].color))
return FALSE;
_cairo_color_init_rgba (color,
gradient->stops[0].color.red,
gradient->stops[0].color.green,
gradient->stops[0].color.blue,
gradient->stops[0].color.alpha);
return TRUE;
}
cairo_bool_t
_cairo_pattern_is_opaque_solid (const cairo_pattern_t *pattern)
{
cairo_solid_pattern_t *solid;
if (pattern->type != CAIRO_PATTERN_TYPE_SOLID)
return FALSE;
solid = (cairo_solid_pattern_t *) pattern;
return CAIRO_COLOR_IS_OPAQUE (&solid->color);
}
static cairo_bool_t
_surface_is_opaque (const cairo_surface_pattern_t *pattern,
const cairo_rectangle_int_t *r)
{
if (pattern->surface->content & CAIRO_CONTENT_ALPHA)
return FALSE;
if (pattern->base.extend != CAIRO_EXTEND_NONE)
return TRUE;
if (r != NULL) {
cairo_rectangle_int_t extents;
if (! _cairo_surface_get_extents (pattern->surface, &extents))
return TRUE;
if (r->x >= extents.x &&
r->y >= extents.y &&
r->x + r->width <= extents.x + extents.width &&
r->y + r->height <= extents.y + extents.height)
{
return TRUE;
}
}
return FALSE;
}
static cairo_bool_t
_surface_is_clear (const cairo_surface_pattern_t *pattern)
{
cairo_rectangle_int_t extents;
if (_cairo_surface_get_extents (pattern->surface, &extents) &&
(extents.width == 0 || extents.height == 0))
return TRUE;
return pattern->surface->is_clear &&
pattern->surface->content & CAIRO_CONTENT_ALPHA;
}
static cairo_bool_t
_gradient_is_opaque (const cairo_gradient_pattern_t *gradient,
const cairo_rectangle_int_t *extents)
{
unsigned int i;
assert (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR ||
gradient->base.type == CAIRO_PATTERN_TYPE_RADIAL);
if (gradient->n_stops == 0 ||
(gradient->base.extend == CAIRO_EXTEND_NONE &&
gradient->stops[0].offset == gradient->stops[gradient->n_stops - 1].offset))
return FALSE;
if (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR) {
if (gradient->base.extend == CAIRO_EXTEND_NONE) {
double t[2];
cairo_linear_pattern_t *linear = (cairo_linear_pattern_t *) gradient;
if (_linear_pattern_is_degenerate (linear))
return FALSE;
if (extents == NULL)
return FALSE;
_extents_to_linear_parameter (linear, extents, t);
if (t[0] < 0.0 || t[1] > 1.0)
return FALSE;
}
} else
return FALSE;
for (i = 0; i < gradient->n_stops; i++)
if (! CAIRO_COLOR_IS_OPAQUE (&gradient->stops[i].color))
return FALSE;
return TRUE;
}
cairo_bool_t
_cairo_pattern_is_opaque (const cairo_pattern_t *abstract_pattern,
const cairo_rectangle_int_t *extents)
{
const cairo_pattern_union_t *pattern;
if (abstract_pattern->has_component_alpha)
return FALSE;
pattern = (cairo_pattern_union_t *) abstract_pattern;
switch (pattern->base.type) {
case CAIRO_PATTERN_TYPE_SOLID:
return _cairo_pattern_is_opaque_solid (abstract_pattern);
case CAIRO_PATTERN_TYPE_SURFACE:
return _surface_is_opaque (&pattern->surface, extents);
case CAIRO_PATTERN_TYPE_LINEAR:
case CAIRO_PATTERN_TYPE_RADIAL:
return _gradient_is_opaque (&pattern->gradient.base, extents);
}
ASSERT_NOT_REACHED;
return FALSE;
}
cairo_bool_t
_cairo_pattern_is_clear (const cairo_pattern_t *abstract_pattern)
{
const cairo_pattern_union_t *pattern;
if (abstract_pattern->has_component_alpha)
return FALSE;
pattern = (cairo_pattern_union_t *) abstract_pattern;
switch (pattern->type) {
case CAIRO_PATTERN_TYPE_SOLID:
return CAIRO_COLOR_IS_CLEAR (&pattern->solid.color);
case CAIRO_PATTERN_TYPE_SURFACE:
return _surface_is_clear (&pattern->surface);
case CAIRO_PATTERN_TYPE_LINEAR:
case CAIRO_PATTERN_TYPE_RADIAL:
return _gradient_is_clear (&pattern->gradient.base, NULL);
}
ASSERT_NOT_REACHED;
return FALSE;
}
cairo_filter_t
_cairo_pattern_analyze_filter (const cairo_pattern_t *pattern,
double *pad_out)
{
double pad;
cairo_filter_t optimized_filter;
switch (pattern->filter) {
case CAIRO_FILTER_GOOD:
case CAIRO_FILTER_BEST:
case CAIRO_FILTER_BILINEAR:
if (_cairo_matrix_is_pixel_exact (&pattern->matrix)) {
pad = 0.;
optimized_filter = CAIRO_FILTER_NEAREST;
} else {
pad = 0.5;
optimized_filter = pattern->filter;
}
break;
case CAIRO_FILTER_FAST:
case CAIRO_FILTER_NEAREST:
case CAIRO_FILTER_GAUSSIAN:
default:
pad = 0.;
optimized_filter = pattern->filter;
break;
}
if (pad_out)
*pad_out = pad;
return optimized_filter;
}
static double
_pixman_nearest_sample (double d)
{
return ceil (d - .5);
}
static cairo_int_status_t
_cairo_pattern_acquire_surface_for_surface (const cairo_surface_pattern_t *pattern,
cairo_surface_t *dst,
int x,
int y,
unsigned int width,
unsigned int height,
unsigned int flags,
cairo_surface_t **out,
cairo_surface_attributes_t *attr)
{
cairo_surface_t *surface;
cairo_rectangle_int_t extents;
cairo_rectangle_int_t sampled_area;
double x1, y1, x2, y2;
int tx, ty;
double pad;
cairo_bool_t is_identity;
cairo_bool_t is_empty;
cairo_bool_t is_bounded;
cairo_int_status_t status;
surface = cairo_surface_reference (pattern->surface);
is_identity = FALSE;
attr->matrix = pattern->base.matrix;
attr->extend = pattern->base.extend;
attr->filter = _cairo_pattern_analyze_filter (&pattern->base, &pad);
attr->has_component_alpha = pattern->base.has_component_alpha;
attr->x_offset = attr->y_offset = tx = ty = 0;
if (_cairo_matrix_is_integer_translation (&attr->matrix, &tx, &ty)) {
cairo_matrix_init_identity (&attr->matrix);
attr->x_offset = tx;
attr->y_offset = ty;
is_identity = TRUE;
} else if (attr->filter == CAIRO_FILTER_NEAREST) {
attr->matrix.x0 = 0;
attr->matrix.y0 = 0;
if (_cairo_matrix_is_pixel_exact (&attr->matrix)) {
attr->matrix.x0 = _pixman_nearest_sample (pattern->base.matrix.x0);
attr->matrix.y0 = _pixman_nearest_sample (pattern->base.matrix.y0);
} else {
attr->matrix.x0 = pattern->base.matrix.x0;
attr->matrix.y0 = pattern->base.matrix.y0;
}
if (_cairo_matrix_is_integer_translation (&attr->matrix, &tx, &ty)) {
cairo_matrix_init_identity (&attr->matrix);
attr->x_offset = tx;
attr->y_offset = ty;
is_identity = TRUE;
}
}
if (flags & CAIRO_PATTERN_ACQUIRE_NO_REFLECT &&
attr->extend == CAIRO_EXTEND_REFLECT)
{
cairo_t *cr;
cairo_surface_t *src;
int w, h;
is_bounded = _cairo_surface_get_extents (surface, &extents);
assert (is_bounded);
status = _cairo_surface_clone_similar (dst, surface,
extents.x, extents.y,
extents.width, extents.height,
&extents.x, &extents.y, &src);
if (unlikely (status))
goto BAIL;
w = 2 * extents.width;
h = 2 * extents.height;
if (is_identity) {
attr->x_offset = -x;
x += tx;
while (x <= -w)
x += w;
while (x >= w)
x -= w;
extents.x += x;
tx = x = 0;
attr->y_offset = -y;
y += ty;
while (y <= -h)
y += h;
while (y >= h)
y -= h;
extents.y += y;
ty = y = 0;
}
cairo_surface_destroy (surface);
surface = _cairo_surface_create_similar_solid (dst,
dst->content, w, h,
CAIRO_COLOR_TRANSPARENT,
FALSE);
if (surface == NULL)
return CAIRO_INT_STATUS_UNSUPPORTED;
if (unlikely (surface->status)) {
cairo_surface_destroy (src);
return surface->status;
}
surface->device_transform = pattern->surface->device_transform;
surface->device_transform_inverse = pattern->surface->device_transform_inverse;
cr = cairo_create (surface);
cairo_set_source_surface (cr, src, -extents.x, -extents.y);
cairo_paint (cr);
cairo_scale (cr, -1, +1);
cairo_set_source_surface (cr, src, extents.x-w, -extents.y);
cairo_paint (cr);
cairo_set_source_surface (cr, src, extents.x, -extents.y);
cairo_paint (cr);
cairo_scale (cr, +1, -1);
cairo_set_source_surface (cr, src, extents.x-w, extents.y-h);
cairo_paint (cr);
cairo_set_source_surface (cr, src, extents.x, extents.y-h);
cairo_paint (cr);
cairo_set_source_surface (cr, src, extents.x-w, extents.y);
cairo_paint (cr);
cairo_set_source_surface (cr, src, extents.x, extents.y);
cairo_paint (cr);
cairo_scale (cr, -1, +1);
cairo_set_source_surface (cr, src, -extents.x, extents.y-h);
cairo_paint (cr);
cairo_set_source_surface (cr, src, -extents.x, extents.y);
cairo_paint (cr);
status = cairo_status (cr);
cairo_destroy (cr);
cairo_surface_destroy (src);
if (unlikely (status))
goto BAIL;
attr->extend = CAIRO_EXTEND_REPEAT;
}
x1 = x;
y1 = y;
x2 = x + (int) width;
y2 = y + (int) height;
if (! is_identity) {
_cairo_matrix_transform_bounding_box (&attr->matrix,
&x1, &y1, &x2, &y2,
NULL);
}
sampled_area.x = floor (x1 - pad);
sampled_area.y = floor (y1 - pad);
sampled_area.width = ceil (x2 + pad) - sampled_area.x;
sampled_area.height = ceil (y2 + pad) - sampled_area.y;
sampled_area.x += tx;
sampled_area.y += ty;
if ( _cairo_surface_get_extents (surface, &extents)) {
if (attr->extend == CAIRO_EXTEND_NONE) {
is_empty = _cairo_rectangle_intersect (&extents, &sampled_area);
} else {
int trim = 0;
if (sampled_area.x >= extents.x &&
sampled_area.x + (int) sampled_area.width <= extents.x + (int) extents.width)
{
extents.x = sampled_area.x;
extents.width = sampled_area.width;
trim |= 0x1;
}
if (sampled_area.y >= extents.y &&
sampled_area.y + (int) sampled_area.height <= extents.y + (int) extents.height)
{
extents.y = sampled_area.y;
extents.height = sampled_area.height;
trim |= 0x2;
}
if (trim == 0x3) {
attr->extend = CAIRO_EXTEND_NONE;
}
is_empty = extents.width == 0 || extents.height == 0;
}
}
status = _cairo_surface_clone_similar (dst, surface,
extents.x, extents.y,
extents.width, extents.height,
&x, &y, out);
if (unlikely (status))
goto BAIL;
if (x != 0 || y != 0) {
if (is_identity) {
attr->x_offset -= x;
attr->y_offset -= y;
} else {
cairo_matrix_t m;
x -= attr->x_offset;
y -= attr->y_offset;
attr->x_offset = 0;
attr->y_offset = 0;
cairo_matrix_init_translate (&m, -x, -y);
cairo_matrix_multiply (&attr->matrix, &attr->matrix, &m);
}
}
if (! is_identity) {
cairo_matrix_t m;
cairo_status_t invert_status;
m = attr->matrix;
invert_status = cairo_matrix_invert (&m);
assert (invert_status == CAIRO_STATUS_SUCCESS);
if (m.x0 != 0. || m.y0 != 0.) {
x = floor (m.x0 / 2);
y = floor (m.y0 / 2);
attr->x_offset -= x;
attr->y_offset -= y;
cairo_matrix_init_translate (&m, x, y);
cairo_matrix_multiply (&attr->matrix, &m, &attr->matrix);
}
}
BAIL:
cairo_surface_destroy (surface);
return status;
}
cairo_int_status_t
_cairo_pattern_acquire_surface (const cairo_pattern_t *pattern,
cairo_surface_t *dst,
int x,
int y,
unsigned int width,
unsigned int height,
unsigned int flags,
cairo_surface_t **surface_out,
cairo_surface_attributes_t *attributes)
{
if (unlikely (pattern->status)) {
*surface_out = NULL;
return pattern->status;
}
switch (pattern->type) {
case CAIRO_PATTERN_TYPE_SOLID:
return _cairo_pattern_acquire_surface_for_solid ((cairo_solid_pattern_t *) pattern,
dst, x, y, width, height,
surface_out,
attributes);
case CAIRO_PATTERN_TYPE_LINEAR:
case CAIRO_PATTERN_TYPE_RADIAL:
return _cairo_pattern_acquire_surface_for_gradient ((cairo_gradient_pattern_t *) pattern,
dst, x, y, width, height,
surface_out,
attributes);
case CAIRO_PATTERN_TYPE_SURFACE:
return _cairo_pattern_acquire_surface_for_surface ((cairo_surface_pattern_t *) pattern,
dst, x, y, width, height,
flags,
surface_out,
attributes);
default:
ASSERT_NOT_REACHED;
return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
}
}
void
_cairo_pattern_release_surface (const cairo_pattern_t *pattern,
cairo_surface_t *surface,
cairo_surface_attributes_t *attributes)
{
cairo_surface_destroy (surface);
}
cairo_int_status_t
_cairo_pattern_acquire_surfaces (const cairo_pattern_t *src,
const cairo_pattern_t *mask,
cairo_surface_t *dst,
int src_x,
int src_y,
int mask_x,
int mask_y,
unsigned int width,
unsigned int height,
unsigned int flags,
cairo_surface_t **src_out,
cairo_surface_t **mask_out,
cairo_surface_attributes_t *src_attributes,
cairo_surface_attributes_t *mask_attributes)
{
cairo_int_status_t status;
cairo_pattern_union_t src_tmp;
if (unlikely (src->status))
return src->status;
if (unlikely (mask != NULL && mask->status))
return mask->status;
if (src->type == CAIRO_PATTERN_TYPE_SOLID &&
mask &&
! mask->has_component_alpha &&
mask->type == CAIRO_PATTERN_TYPE_SOLID)
{
cairo_color_t combined;
cairo_solid_pattern_t *src_solid = (cairo_solid_pattern_t *) src;
cairo_solid_pattern_t *mask_solid = (cairo_solid_pattern_t *) mask;
combined = src_solid->color;
_cairo_color_multiply_alpha (&combined, mask_solid->color.alpha);
_cairo_pattern_init_solid (&src_tmp.solid, &combined);
src = &src_tmp.base;
mask = NULL;
}
status = _cairo_pattern_acquire_surface (src, dst,
src_x, src_y,
width, height,
flags,
src_out, src_attributes);
if (unlikely (status))
goto BAIL;
if (mask == NULL) {
*mask_out = NULL;
goto BAIL;
}
status = _cairo_pattern_acquire_surface (mask, dst,
mask_x, mask_y,
width, height,
flags,
mask_out, mask_attributes);
if (unlikely (status))
_cairo_pattern_release_surface (src, *src_out, src_attributes);
BAIL:
if (src == &src_tmp.base)
_cairo_pattern_fini (&src_tmp.base);
return status;
}
void
_cairo_pattern_get_extents (const cairo_pattern_t *pattern,
cairo_rectangle_int_t *extents)
{
double x1, y1, x2, y2;
cairo_status_t status;
switch (pattern->type) {
case CAIRO_PATTERN_TYPE_SOLID:
goto UNBOUNDED;
case CAIRO_PATTERN_TYPE_SURFACE:
{
cairo_rectangle_int_t surface_extents;
const cairo_surface_pattern_t *surface_pattern =
(const cairo_surface_pattern_t *) pattern;
cairo_surface_t *surface = surface_pattern->surface;
double pad;
if (! _cairo_surface_get_extents (surface, &surface_extents))
goto UNBOUNDED;
if (surface_extents.width == 0 || surface_extents.height == 0)
goto EMPTY;
if (pattern->extend != CAIRO_EXTEND_NONE)
goto UNBOUNDED;
_cairo_pattern_analyze_filter (&surface_pattern->base, &pad);
x1 = surface_extents.x - pad;
y1 = surface_extents.y - pad;
x2 = surface_extents.x + (int) surface_extents.width + pad;
y2 = surface_extents.y + (int) surface_extents.height + pad;
}
break;
case CAIRO_PATTERN_TYPE_RADIAL:
{
const cairo_radial_pattern_t *radial =
(const cairo_radial_pattern_t *) pattern;
double cx1, cy1;
double cx2, cy2;
double r, D;
if (radial->r1 == 0 && radial->r2 == 0)
goto EMPTY;
cx1 = _cairo_fixed_to_double (radial->c1.x);
cy1 = _cairo_fixed_to_double (radial->c1.y);
r = _cairo_fixed_to_double (radial->r1);
x1 = cx1 - r; x2 = cx1 + r;
y1 = cy1 - r; y2 = cy1 + r;
cx2 = _cairo_fixed_to_double (radial->c2.x);
cy2 = _cairo_fixed_to_double (radial->c2.y);
r = fabs (_cairo_fixed_to_double (radial->r2));
if (pattern->extend != CAIRO_EXTEND_NONE)
goto UNBOUNDED;
D = (cx1-cx2)*(cx1-cx2) + (cy1-cy2)*(cy1-cy2);
if (D > r*r - 1e-5)
goto UNBOUNDED;
if (cx2 - r < x1)
x1 = cx2 - r;
if (cx2 + r > x2)
x2 = cx2 + r;
if (cy2 - r < y1)
y1 = cy2 - r;
if (cy2 + r > y2)
y2 = cy2 + r;
}
break;
case CAIRO_PATTERN_TYPE_LINEAR:
{
const cairo_linear_pattern_t *linear =
(const cairo_linear_pattern_t *) pattern;
if (pattern->extend != CAIRO_EXTEND_NONE)
goto UNBOUNDED;
if (linear->p1.x == linear->p2.x && linear->p1.y == linear->p2.y)
goto EMPTY;
if (pattern->matrix.xy != 0. || pattern->matrix.yx != 0.)
goto UNBOUNDED;
if (linear->p1.x == linear->p2.x) {
x1 = -HUGE_VAL;
x2 = HUGE_VAL;
y1 = _cairo_fixed_to_double (MIN (linear->p1.y, linear->p2.y));
y2 = _cairo_fixed_to_double (MAX (linear->p1.y, linear->p2.y));
} else if (linear->p1.y == linear->p2.y) {
x1 = _cairo_fixed_to_double (MIN (linear->p1.x, linear->p2.x));
x2 = _cairo_fixed_to_double (MAX (linear->p1.x, linear->p2.x));
y1 = -HUGE_VAL;
y2 = HUGE_VAL;
} else {
goto UNBOUNDED;
}
}
break;
default:
ASSERT_NOT_REACHED;
}
if (_cairo_matrix_is_translation (&pattern->matrix)) {
x1 -= pattern->matrix.x0; x2 -= pattern->matrix.x0;
y1 -= pattern->matrix.y0; y2 -= pattern->matrix.y0;
} else {
cairo_matrix_t imatrix;
imatrix = pattern->matrix;
status = cairo_matrix_invert (&imatrix);
assert (status == CAIRO_STATUS_SUCCESS);
_cairo_matrix_transform_bounding_box (&imatrix,
&x1, &y1, &x2, &y2,
NULL);
}
x1 = floor (x1);
if (x1 < CAIRO_RECT_INT_MIN)
x1 = CAIRO_RECT_INT_MIN;
y1 = floor (y1);
if (y1 < CAIRO_RECT_INT_MIN)
y1 = CAIRO_RECT_INT_MIN;
x2 = ceil (x2);
if (x2 > CAIRO_RECT_INT_MAX)
x2 = CAIRO_RECT_INT_MAX;
y2 = ceil (y2);
if (y2 > CAIRO_RECT_INT_MAX)
y2 = CAIRO_RECT_INT_MAX;
extents->x = x1; extents->width = x2 - x1;
extents->y = y1; extents->height = y2 - y1;
return;
UNBOUNDED:
_cairo_unbounded_rectangle_init (extents);
return;
EMPTY:
extents->x = extents->y = 0;
extents->width = extents->height = 0;
return;
}
static unsigned long
_cairo_solid_pattern_hash (unsigned long hash,
const cairo_pattern_t *pattern)
{
const cairo_solid_pattern_t *solid = (cairo_solid_pattern_t *) pattern;
hash = _cairo_hash_bytes (hash, &solid->color, sizeof (solid->color));
return hash;
}
static unsigned long
_cairo_gradient_color_stops_hash (unsigned long hash,
const cairo_gradient_pattern_t *gradient)
{
unsigned int n;
hash = _cairo_hash_bytes (hash,
&gradient->n_stops,
sizeof (gradient->n_stops));
for (n = 0; n < gradient->n_stops; n++) {
hash = _cairo_hash_bytes (hash,
&gradient->stops[n].offset,
sizeof (double));
hash = _cairo_hash_bytes (hash,
&gradient->stops[n].color,
sizeof (cairo_color_t));
}
return hash;
}
unsigned long
_cairo_linear_pattern_hash (unsigned long hash,
const cairo_linear_pattern_t *linear)
{
hash = _cairo_hash_bytes (hash, &linear->p1, sizeof (linear->p1));
hash = _cairo_hash_bytes (hash, &linear->p2, sizeof (linear->p2));
return _cairo_gradient_color_stops_hash (hash, &linear->base);
}
unsigned long
_cairo_radial_pattern_hash (unsigned long hash,
const cairo_radial_pattern_t *radial)
{
hash = _cairo_hash_bytes (hash, &radial->c1, sizeof (radial->c1));
hash = _cairo_hash_bytes (hash, &radial->r1, sizeof (radial->r1));
hash = _cairo_hash_bytes (hash, &radial->c2, sizeof (radial->c2));
hash = _cairo_hash_bytes (hash, &radial->r2, sizeof (radial->r2));
return _cairo_gradient_color_stops_hash (hash, &radial->base);
}
static unsigned long
_cairo_surface_pattern_hash (unsigned long hash,
const cairo_pattern_t *pattern)
{
const cairo_surface_pattern_t *surface = (cairo_surface_pattern_t *) pattern;
hash ^= surface->surface->unique_id;
return hash;
}
unsigned long
_cairo_pattern_hash (const cairo_pattern_t *pattern)
{
unsigned long hash = _CAIRO_HASH_INIT_VALUE;
if (pattern->status)
return 0;
hash = _cairo_hash_bytes (hash, &pattern->type, sizeof (pattern->type));
if (pattern->type != CAIRO_PATTERN_TYPE_SOLID) {
hash = _cairo_hash_bytes (hash,
&pattern->matrix, sizeof (pattern->matrix));
hash = _cairo_hash_bytes (hash,
&pattern->filter, sizeof (pattern->filter));
hash = _cairo_hash_bytes (hash,
&pattern->extend, sizeof (pattern->extend));
hash = _cairo_hash_bytes (hash,
&pattern->has_component_alpha,
sizeof (pattern->has_component_alpha));
}
switch (pattern->type) {
case CAIRO_PATTERN_TYPE_SOLID:
return _cairo_solid_pattern_hash (hash, pattern);
case CAIRO_PATTERN_TYPE_LINEAR:
return _cairo_linear_pattern_hash (hash, (cairo_linear_pattern_t *) pattern);
case CAIRO_PATTERN_TYPE_RADIAL:
return _cairo_radial_pattern_hash (hash, (cairo_radial_pattern_t *) pattern);
case CAIRO_PATTERN_TYPE_SURFACE:
return _cairo_surface_pattern_hash (hash, pattern);
default:
ASSERT_NOT_REACHED;
return FALSE;
}
}
static unsigned long
_cairo_gradient_pattern_color_stops_size (const cairo_pattern_t *pattern)
{
cairo_gradient_pattern_t *gradient = (cairo_gradient_pattern_t *) pattern;
return gradient->n_stops * (sizeof (double) + sizeof (cairo_color_t));
}
unsigned long
_cairo_pattern_size (const cairo_pattern_t *pattern)
{
if (pattern->status)
return 0;
switch (pattern->type) {
case CAIRO_PATTERN_TYPE_SOLID:
return sizeof (cairo_solid_pattern_t);
break;
case CAIRO_PATTERN_TYPE_SURFACE:
return sizeof (cairo_surface_pattern_t);
break;
case CAIRO_PATTERN_TYPE_LINEAR:
return sizeof (cairo_linear_pattern_t) +
_cairo_gradient_pattern_color_stops_size (pattern);
break;
case CAIRO_PATTERN_TYPE_RADIAL:
return sizeof (cairo_radial_pattern_t) +
_cairo_gradient_pattern_color_stops_size (pattern);
default:
ASSERT_NOT_REACHED;
return 0;
}
}
static cairo_bool_t
_cairo_solid_pattern_equal (const cairo_pattern_t *A,
const cairo_pattern_t *B)
{
const cairo_solid_pattern_t *a = (cairo_solid_pattern_t *) A;
const cairo_solid_pattern_t *b = (cairo_solid_pattern_t *) B;
return _cairo_color_equal (&a->color, &b->color);
}
static cairo_bool_t
_cairo_gradient_color_stops_equal (const cairo_gradient_pattern_t *a,
const cairo_gradient_pattern_t *b)
{
unsigned int n;
if (a->n_stops != b->n_stops)
return FALSE;
for (n = 0; n < a->n_stops; n++) {
if (a->stops[n].offset != b->stops[n].offset)
return FALSE;
if (! _cairo_color_stop_equal (&a->stops[n].color, &b->stops[n].color))
return FALSE;
}
return TRUE;
}
cairo_bool_t
_cairo_linear_pattern_equal (const cairo_linear_pattern_t *a,
const cairo_linear_pattern_t *b)
{
if (a->p1.x != b->p1.x)
return FALSE;
if (a->p1.y != b->p1.y)
return FALSE;
if (a->p2.x != b->p2.x)
return FALSE;
if (a->p2.y != b->p2.y)
return FALSE;
return _cairo_gradient_color_stops_equal (&a->base, &b->base);
}
cairo_bool_t
_cairo_radial_pattern_equal (const cairo_radial_pattern_t *a,
const cairo_radial_pattern_t *b)
{
if (a->c1.x != b->c1.x)
return FALSE;
if (a->c1.y != b->c1.y)
return FALSE;
if (a->r1 != b->r1)
return FALSE;
if (a->c2.x != b->c2.x)
return FALSE;
if (a->c2.y != b->c2.y)
return FALSE;
if (a->r2 != b->r2)
return FALSE;
return _cairo_gradient_color_stops_equal (&a->base, &b->base);
}
static cairo_bool_t
_cairo_surface_pattern_equal (const cairo_pattern_t *A,
const cairo_pattern_t *B)
{
const cairo_surface_pattern_t *a = (cairo_surface_pattern_t *) A;
const cairo_surface_pattern_t *b = (cairo_surface_pattern_t *) B;
return a->surface->unique_id == b->surface->unique_id;
}
cairo_bool_t
_cairo_pattern_equal (const cairo_pattern_t *a, const cairo_pattern_t *b)
{
if (a->status || b->status)
return FALSE;
if (a == b)
return TRUE;
if (a->type != b->type)
return FALSE;
if (a->has_component_alpha != b->has_component_alpha)
return FALSE;
if (a->type != CAIRO_PATTERN_TYPE_SOLID) {
if (memcmp (&a->matrix, &b->matrix, sizeof (cairo_matrix_t)))
return FALSE;
if (a->filter != b->filter)
return FALSE;
if (a->extend != b->extend)
return FALSE;
}
switch (a->type) {
case CAIRO_PATTERN_TYPE_SOLID:
return _cairo_solid_pattern_equal (a, b);
case CAIRO_PATTERN_TYPE_LINEAR:
return _cairo_linear_pattern_equal ((cairo_linear_pattern_t *) a,
(cairo_linear_pattern_t *) b);
case CAIRO_PATTERN_TYPE_RADIAL:
return _cairo_radial_pattern_equal ((cairo_radial_pattern_t *) a,
(cairo_radial_pattern_t *) b);
case CAIRO_PATTERN_TYPE_SURFACE:
return _cairo_surface_pattern_equal (a, b);
default:
ASSERT_NOT_REACHED;
return FALSE;
}
}
cairo_status_t
cairo_pattern_get_rgba (cairo_pattern_t *pattern,
double *red, double *green,
double *blue, double *alpha)
{
cairo_solid_pattern_t *solid = (cairo_solid_pattern_t*) pattern;
double r0, g0, b0, a0;
if (pattern->status)
return pattern->status;
if (pattern->type != CAIRO_PATTERN_TYPE_SOLID)
return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
_cairo_color_get_rgba (&solid->color, &r0, &g0, &b0, &a0);
if (red)
*red = r0;
if (green)
*green = g0;
if (blue)
*blue = b0;
if (alpha)
*alpha = a0;
return CAIRO_STATUS_SUCCESS;
}
cairo_status_t
cairo_pattern_get_surface (cairo_pattern_t *pattern,
cairo_surface_t **surface)
{
cairo_surface_pattern_t *spat = (cairo_surface_pattern_t*) pattern;
if (pattern->status)
return pattern->status;
if (pattern->type != CAIRO_PATTERN_TYPE_SURFACE)
return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
if (surface)
*surface = spat->surface;
return CAIRO_STATUS_SUCCESS;
}
cairo_status_t
cairo_pattern_get_color_stop_rgba (cairo_pattern_t *pattern,
int index, double *offset,
double *red, double *green,
double *blue, double *alpha)
{
cairo_gradient_pattern_t *gradient = (cairo_gradient_pattern_t*) pattern;
if (pattern->status)
return pattern->status;
if (pattern->type != CAIRO_PATTERN_TYPE_LINEAR &&
pattern->type != CAIRO_PATTERN_TYPE_RADIAL)
return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
if (index < 0 || (unsigned int) index >= gradient->n_stops)
return _cairo_error (CAIRO_STATUS_INVALID_INDEX);
if (offset)
*offset = gradient->stops[index].offset;
if (red)
*red = gradient->stops[index].color.red;
if (green)
*green = gradient->stops[index].color.green;
if (blue)
*blue = gradient->stops[index].color.blue;
if (alpha)
*alpha = gradient->stops[index].color.alpha;
return CAIRO_STATUS_SUCCESS;
}
cairo_status_t
cairo_pattern_get_color_stop_count (cairo_pattern_t *pattern,
int *count)
{
cairo_gradient_pattern_t *gradient = (cairo_gradient_pattern_t*) pattern;
if (pattern->status)
return pattern->status;
if (pattern->type != CAIRO_PATTERN_TYPE_LINEAR &&
pattern->type != CAIRO_PATTERN_TYPE_RADIAL)
return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
if (count)
*count = gradient->n_stops;
return CAIRO_STATUS_SUCCESS;
}
cairo_status_t
cairo_pattern_get_linear_points (cairo_pattern_t *pattern,
double *x0, double *y0,
double *x1, double *y1)
{
cairo_linear_pattern_t *linear = (cairo_linear_pattern_t*) pattern;
if (pattern->status)
return pattern->status;
if (pattern->type != CAIRO_PATTERN_TYPE_LINEAR)
return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
if (x0)
*x0 = _cairo_fixed_to_double (linear->p1.x);
if (y0)
*y0 = _cairo_fixed_to_double (linear->p1.y);
if (x1)
*x1 = _cairo_fixed_to_double (linear->p2.x);
if (y1)
*y1 = _cairo_fixed_to_double (linear->p2.y);
return CAIRO_STATUS_SUCCESS;
}
cairo_status_t
cairo_pattern_get_radial_circles (cairo_pattern_t *pattern,
double *x0, double *y0, double *r0,
double *x1, double *y1, double *r1)
{
cairo_radial_pattern_t *radial = (cairo_radial_pattern_t*) pattern;
if (pattern->status)
return pattern->status;
if (pattern->type != CAIRO_PATTERN_TYPE_RADIAL)
return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
if (x0)
*x0 = _cairo_fixed_to_double (radial->c1.x);
if (y0)
*y0 = _cairo_fixed_to_double (radial->c1.y);
if (r0)
*r0 = _cairo_fixed_to_double (radial->r1);
if (x1)
*x1 = _cairo_fixed_to_double (radial->c2.x);
if (y1)
*y1 = _cairo_fixed_to_double (radial->c2.y);
if (r1)
*r1 = _cairo_fixed_to_double (radial->r2);
return CAIRO_STATUS_SUCCESS;
}
void
_cairo_pattern_reset_static_data (void)
{
#if HAS_FREED_POOL
int i;
for (i = 0; i < ARRAY_LENGTH (freed_pattern_pool); i++)
_freed_pool_reset (&freed_pattern_pool[i]);
#endif
_cairo_pattern_reset_solid_surface_cache ();
}