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/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
/* cairo - a vector graphics library with display and print output
*
* Copyright © 2002 University of Southern California
* Copyright © 2005 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it either under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation
* (the "LGPL") or, at your option, under the terms of the Mozilla
* Public License Version 1.1 (the "MPL"). If you do not alter this
* notice, a recipient may use your version of this file under either
* the MPL or the LGPL.
*
* You should have received a copy of the LGPL along with this library
* in the file COPYING-LGPL-2.1; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
* You should have received a copy of the MPL along with this library
* in the file COPYING-MPL-1.1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
* OF ANY KIND, either express or implied. See the LGPL or the MPL for
* the specific language governing rights and limitations.
*
* The Original Code is the cairo graphics library.
*
* The Initial Developer of the Original Code is University of Southern
* California.
*
* Contributor(s):
* Carl D. Worth <cworth@cworth.org>
* Behdad Esfahbod <behdad@behdad.org>
* Chris Wilson <chris@chris-wilson.co.uk>
* Karl Tomlinson <karlt+@karlt.net>, Mozilla Corporation
*/
#include "cairoint.h"
#if !CAIRO_HAS_XLIB_XCB_FUNCTIONS
#include "cairo-xlib-private.h"
#include "cairo-xlib-surface-private.h"
#include "cairo-error-private.h"
#include "cairo-image-surface-inline.h"
#include "cairo-paginated-private.h"
#include "cairo-pattern-inline.h"
#include "cairo-recording-surface-private.h"
#include "cairo-surface-backend-private.h"
#include "cairo-surface-offset-private.h"
#include "cairo-surface-observer-private.h"
#include "cairo-surface-snapshot-inline.h"
#include "cairo-surface-subsurface-inline.h"
#define PIXMAN_MAX_INT ((pixman_fixed_1 >> 1) - pixman_fixed_e) /* need to ensure deltas also fit */
static cairo_xlib_surface_t *
unwrap_source (const cairo_surface_pattern_t *pattern)
{
cairo_rectangle_int_t limits;
return (cairo_xlib_surface_t *)_cairo_pattern_get_source (pattern, &limits);
}
static cairo_status_t
_cairo_xlib_source_finish (void *abstract_surface)
{
cairo_xlib_source_t *source = abstract_surface;
XRenderFreePicture (source->dpy, source->picture);
if (source->pixmap)
XFreePixmap (source->dpy, source->pixmap);
return CAIRO_STATUS_SUCCESS;
}
static const cairo_surface_backend_t cairo_xlib_source_backend = {
CAIRO_SURFACE_TYPE_XLIB,
_cairo_xlib_source_finish,
NULL, /* read-only wrapper */
};
static cairo_status_t
_cairo_xlib_proxy_finish (void *abstract_surface)
{
cairo_xlib_proxy_t *proxy = abstract_surface;
_cairo_xlib_shm_surface_mark_active (proxy->owner);
XRenderFreePicture (proxy->source.dpy, proxy->source.picture);
if (proxy->source.pixmap)
XFreePixmap (proxy->source.dpy, proxy->source.pixmap);
cairo_surface_destroy (proxy->owner);
return CAIRO_STATUS_SUCCESS;
}
static const cairo_surface_backend_t cairo_xlib_proxy_backend = {
CAIRO_SURFACE_TYPE_XLIB,
_cairo_xlib_proxy_finish,
NULL, /* read-only wrapper */
};
static cairo_surface_t *
source (cairo_xlib_surface_t *dst, Picture picture, Pixmap pixmap)
{
cairo_xlib_source_t *source;
if (picture == None)
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
source = _cairo_malloc (sizeof (*source));
if (unlikely (source == NULL)) {
XRenderFreePicture (dst->display->display, picture);
if (pixmap)
XFreePixmap (dst->display->display, pixmap);
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
}
_cairo_surface_init (&source->base,
&cairo_xlib_source_backend,
NULL, /* device */
CAIRO_CONTENT_COLOR_ALPHA,
FALSE); /* is_vector */
/* The source exists only within an operation */
source->picture = picture;
source->pixmap = pixmap;
source->dpy = dst->display->display;
return &source->base;
}
static uint32_t
hars_petruska_f54_1_random (void)
{
#define rol(x,k) ((x << k) | (x >> (32-k)))
static uint32_t x;
return x = (x ^ rol (x, 5) ^ rol (x, 24)) + 0x37798849;
#undef rol
}
static const XTransform identity = {
{
{ 1 << 16, 0x00000, 0x00000 },
{ 0x00000, 1 << 16, 0x00000 },
{ 0x00000, 0x00000, 1 << 16 },
}
};
static cairo_bool_t
picture_set_matrix (cairo_xlib_display_t *display,
Picture picture,
const cairo_matrix_t *matrix,
cairo_filter_t filter,
double xc,
double yc,
int *x_offset,
int *y_offset)
{
XTransform xtransform;
pixman_transform_t *pixman_transform;
cairo_int_status_t status;
/* Casting between pixman_transform_t and XTransform is safe because
* they happen to be the exact same type.
*/
pixman_transform = (pixman_transform_t *) &xtransform;
status = _cairo_matrix_to_pixman_matrix_offset (matrix, filter, xc, yc,
pixman_transform,
x_offset, y_offset);
if (status == CAIRO_INT_STATUS_NOTHING_TO_DO)
return TRUE;
if (unlikely (status != CAIRO_INT_STATUS_SUCCESS))
return FALSE;
if (memcmp (&xtransform, &identity, sizeof (XTransform)) == 0)
return TRUE;
/* a late check in case we perturb the matrix too far */
if (! CAIRO_RENDER_HAS_PICTURE_TRANSFORM (display))
return FALSE;
XRenderSetPictureTransform (display->display, picture, &xtransform);
return TRUE;
}
static cairo_status_t
picture_set_filter (Display *dpy,
Picture picture,
cairo_filter_t filter)
{
const char *render_filter;
switch (filter) {
case CAIRO_FILTER_FAST:
render_filter = FilterFast;
break;
case CAIRO_FILTER_GOOD:
render_filter = FilterGood;
break;
case CAIRO_FILTER_BEST:
render_filter = FilterBest;
break;
case CAIRO_FILTER_NEAREST:
render_filter = FilterNearest;
break;
case CAIRO_FILTER_BILINEAR:
render_filter = FilterBilinear;
break;
case CAIRO_FILTER_GAUSSIAN:
/* XXX: The GAUSSIAN value has no implementation in cairo
* whatsoever, so it was really a mistake to have it in the
* API. We could fix this by officially deprecating it, or
* else inventing semantics and providing an actual
* implementation for it. */
default:
render_filter = FilterBest;
break;
}
XRenderSetPictureFilter (dpy, picture, (char *) render_filter, NULL, 0);
return CAIRO_STATUS_SUCCESS;
}
static int
extend_to_repeat (cairo_extend_t extend)
{
switch (extend) {
default:
ASSERT_NOT_REACHED;
case CAIRO_EXTEND_NONE:
return RepeatNone;
case CAIRO_EXTEND_REPEAT:
return RepeatNormal;
case CAIRO_EXTEND_REFLECT:
return RepeatReflect;
case CAIRO_EXTEND_PAD:
return RepeatPad;
}
}
static cairo_bool_t
picture_set_properties (cairo_xlib_display_t *display,
Picture picture,
const cairo_pattern_t *pattern,
const cairo_matrix_t *matrix,
const cairo_rectangle_int_t *extents,
int *x_off, int *y_off)
{
XRenderPictureAttributes pa;
int mask = 0;
if (! picture_set_matrix (display, picture, matrix, pattern->filter,
extents->x + extents->width / 2,
extents->y + extents->height / 2,
x_off, y_off))
return FALSE;
picture_set_filter (display->display, picture, pattern->filter);
if (pattern->has_component_alpha) {
pa.component_alpha = 1;
mask |= CPComponentAlpha;
}
if (pattern->extend != CAIRO_EXTEND_NONE) {
pa.repeat = extend_to_repeat (pattern->extend);
mask |= CPRepeat;
}
if (mask)
XRenderChangePicture (display->display, picture, mask, &pa);
return TRUE;
}
static cairo_surface_t *
render_pattern (cairo_xlib_surface_t *dst,
const cairo_pattern_t *pattern,
cairo_bool_t is_mask,
const cairo_rectangle_int_t *extents,
int *src_x, int *src_y)
{
Display *dpy = dst->display->display;
cairo_xlib_surface_t *src;
cairo_image_surface_t *image;
cairo_status_t status;
cairo_rectangle_int_t map_extents;
src = (cairo_xlib_surface_t *)
_cairo_surface_create_scratch (&dst->base,
is_mask ? CAIRO_CONTENT_ALPHA : CAIRO_CONTENT_COLOR_ALPHA,
extents->width,
extents->height,
NULL);
if (src->base.type != CAIRO_SURFACE_TYPE_XLIB) {
cairo_surface_destroy (&src->base);
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
}
map_extents = *extents;
map_extents.x = map_extents.y = 0;
image = _cairo_surface_map_to_image (&src->base, &map_extents);
status = _cairo_surface_offset_paint (&image->base, extents->x, extents->y,
CAIRO_OPERATOR_SOURCE, pattern,
NULL);
status = _cairo_surface_unmap_image (&src->base, image);
if (unlikely (status)) {
cairo_surface_destroy (&src->base);
return _cairo_surface_create_in_error (status);
}
status = _cairo_xlib_surface_put_shm (src);
if (unlikely (status)) {
cairo_surface_destroy (&src->base);
return _cairo_surface_create_in_error (status);
}
src->picture = XRenderCreatePicture (dpy,
src->drawable, src->xrender_format,
0, NULL);
*src_x = -extents->x;
*src_y = -extents->y;
return &src->base;
}
static cairo_surface_t *
gradient_source (cairo_xlib_surface_t *dst,
const cairo_gradient_pattern_t *gradient,
cairo_bool_t is_mask,
const cairo_rectangle_int_t *extents,
int *src_x, int *src_y)
{
cairo_xlib_display_t *display = dst->display;
cairo_matrix_t matrix = gradient->base.matrix;
char buf[CAIRO_STACK_BUFFER_SIZE];
cairo_circle_double_t extremes[2];
XFixed *stops;
XRenderColor *colors;
Picture picture;
unsigned int i, n_stops;
/* The RENDER specification says that the inner circle has
* to be completely contained inside the outer one. */
if (gradient->base.type == CAIRO_PATTERN_TYPE_RADIAL &&
! _cairo_radial_pattern_focus_is_inside ((cairo_radial_pattern_t *) gradient))
return render_pattern (dst, &gradient->base, is_mask, extents, src_x, src_y);
assert (gradient->n_stops > 0);
n_stops = MAX (gradient->n_stops, 2);
if (n_stops < sizeof (buf) / (sizeof (XFixed) + sizeof (XRenderColor)))
{
stops = (XFixed *) buf;
}
else
{
stops =
_cairo_malloc_ab (n_stops,
sizeof (XFixed) + sizeof (XRenderColor));
if (unlikely (stops == NULL))
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
}
colors = (XRenderColor *) (stops + n_stops);
for (i = 0; i < gradient->n_stops; i++) {
stops[i] =
_cairo_fixed_16_16_from_double (gradient->stops[i].offset);
colors[i].red = gradient->stops[i].color.red_short;
colors[i].green = gradient->stops[i].color.green_short;
colors[i].blue = gradient->stops[i].color.blue_short;
colors[i].alpha = gradient->stops[i].color.alpha_short;
}
/* RENDER does not support gradients with less than 2
* stops. If a gradient has only a single stop, duplicate
* it to make RENDER happy. */
if (gradient->n_stops == 1) {
stops[1] =
_cairo_fixed_16_16_from_double (gradient->stops[0].offset);
colors[1].red = gradient->stops[0].color.red_short;
colors[1].green = gradient->stops[0].color.green_short;
colors[1].blue = gradient->stops[0].color.blue_short;
colors[1].alpha = gradient->stops[0].color.alpha_short;
}
#if 0
/* For some weird reason the X server is sometimes getting
* CreateGradient requests with bad length. So far I've only seen
* XRenderCreateLinearGradient request with 4 stops sometime end up
* with length field matching 0 stops at the server side. I've
* looked at the libXrender code and I can't see anything that
* could cause this behavior. However, for some reason having a
* XSync call here seems to avoid the issue so I'll keep it here
* until it's solved.
*/
XSync (display->display, False);
#endif
_cairo_gradient_pattern_fit_to_range (gradient, PIXMAN_MAX_INT >> 1, &matrix, extremes);
if (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR) {
XLinearGradient grad;
grad.p1.x = _cairo_fixed_16_16_from_double (extremes[0].center.x);
grad.p1.y = _cairo_fixed_16_16_from_double (extremes[0].center.y);
grad.p2.x = _cairo_fixed_16_16_from_double (extremes[1].center.x);
grad.p2.y = _cairo_fixed_16_16_from_double (extremes[1].center.y);
picture = XRenderCreateLinearGradient (display->display, &grad,
stops, colors,
n_stops);
} else {
XRadialGradient grad;
grad.inner.x = _cairo_fixed_16_16_from_double (extremes[0].center.x);
grad.inner.y = _cairo_fixed_16_16_from_double (extremes[0].center.y);
grad.inner.radius = _cairo_fixed_16_16_from_double (extremes[0].radius);
grad.outer.x = _cairo_fixed_16_16_from_double (extremes[1].center.x);
grad.outer.y = _cairo_fixed_16_16_from_double (extremes[1].center.y);
grad.outer.radius = _cairo_fixed_16_16_from_double (extremes[1].radius);
picture = XRenderCreateRadialGradient (display->display, &grad,
stops, colors,
n_stops);
}
if (stops != (XFixed *) buf)
free (stops);
*src_x = *src_y = 0;
if (! picture_set_properties (display, picture,
&gradient->base, &gradient->base.matrix,
extents,
src_x, src_y)) {
XRenderFreePicture (display->display, picture);
return render_pattern (dst, &gradient->base, is_mask, extents, src_x, src_y);
}
return source (dst, picture, None);
}
static cairo_surface_t *
color_source (cairo_xlib_surface_t *dst, const cairo_color_t *color)
{
Display *dpy = dst->display->display;
XRenderColor xcolor;
Picture picture;
Pixmap pixmap = None;
xcolor.red = color->red_short;
xcolor.green = color->green_short;
xcolor.blue = color->blue_short;
xcolor.alpha = color->alpha_short;
if (CAIRO_RENDER_HAS_GRADIENTS(dst->display)) {
picture = XRenderCreateSolidFill (dpy, &xcolor);
} else {
XRenderPictureAttributes pa;
int mask = 0;
pa.repeat = RepeatNormal;
mask |= CPRepeat;
pixmap = XCreatePixmap (dpy, dst->drawable, 1, 1, 32);
picture = XRenderCreatePicture (dpy, pixmap,
_cairo_xlib_display_get_xrender_format (dst->display, CAIRO_FORMAT_ARGB32),
mask, &pa);
if (CAIRO_RENDER_HAS_FILL_RECTANGLES(dst->display)) {
XRectangle r = { 0, 0, 1, 1};
XRenderFillRectangles (dpy, PictOpSrc, picture, &xcolor, &r, 1);
} else {
XGCValues gcv;
GC gc;
gc = _cairo_xlib_screen_get_gc (dst->display, dst->screen,
32, pixmap);
if (unlikely (gc == NULL)) {
XFreePixmap (dpy, pixmap);
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
}
gcv.foreground = 0;
gcv.foreground |= (uint32_t)color->alpha_short >> 8 << 24;
gcv.foreground |= color->red_short >> 8 << 16;
gcv.foreground |= color->green_short >> 8 << 8;
gcv.foreground |= color->blue_short >> 8 << 0;
gcv.fill_style = FillSolid;
XChangeGC (dpy, gc, GCFillStyle | GCForeground, &gcv);
XFillRectangle (dpy, pixmap, gc, 0, 0, 1, 1);
_cairo_xlib_screen_put_gc (dst->display, dst->screen, 32, gc);
}
}
return source (dst, picture, pixmap);
}
static cairo_surface_t *
alpha_source (cairo_xlib_surface_t *dst, uint8_t alpha)
{
cairo_xlib_display_t *display = dst->display;
if (display->alpha[alpha] == NULL) {
cairo_color_t color;
color.red_short = color.green_short = color.blue_short = 0;
color.alpha_short = alpha << 8 | alpha;
display->alpha[alpha] = color_source (dst, &color);
}
return cairo_surface_reference (display->alpha[alpha]);
}
static cairo_surface_t *
white_source (cairo_xlib_surface_t *dst)
{
cairo_xlib_display_t *display = dst->display;
if (display->white == NULL)
display->white = color_source (dst, CAIRO_COLOR_WHITE);
return cairo_surface_reference (display->white);
}
static cairo_surface_t *
opaque_source (cairo_xlib_surface_t *dst, const cairo_color_t *color)
{
cairo_xlib_display_t *display = dst->display;
uint32_t pixel =
0xff000000 |
color->red_short >> 8 << 16 |
color->green_short >> 8 << 8 |
color->blue_short >> 8 << 0;
int i;
if (display->last_solid_cache[0].color == pixel)
return cairo_surface_reference (display->solid[display->last_solid_cache[0].index]);
for (i = 0; i < 16; i++) {
if (display->solid_cache[i] == pixel)
goto done;
}
i = hars_petruska_f54_1_random () % 16;
cairo_surface_destroy (display->solid[i]);
display->solid[i] = color_source (dst, color);
display->solid_cache[i] = pixel;
done:
display->last_solid_cache[0].color = pixel;
display->last_solid_cache[0].index = i;
return cairo_surface_reference (display->solid[i]);
}
static cairo_surface_t *
transparent_source (cairo_xlib_surface_t *dst, const cairo_color_t *color)
{
cairo_xlib_display_t *display = dst->display;
uint32_t pixel =
(uint32_t)color->alpha_short >> 8 << 24 |
color->red_short >> 8 << 16 |
color->green_short >> 8 << 8 |
color->blue_short >> 8 << 0;
int i;
if (display->last_solid_cache[1].color == pixel) {
assert (display->solid[display->last_solid_cache[1].index]);
return cairo_surface_reference (display->solid[display->last_solid_cache[1].index]);
}
for (i = 16; i < 32; i++) {
if (display->solid_cache[i] == pixel)
goto done;
}
i = 16 + (hars_petruska_f54_1_random () % 16);
cairo_surface_destroy (display->solid[i]);
display->solid[i] = color_source (dst, color);
display->solid_cache[i] = pixel;
done:
display->last_solid_cache[1].color = pixel;
display->last_solid_cache[1].index = i;
assert (display->solid[i]);
return cairo_surface_reference (display->solid[i]);
}
static cairo_surface_t *
solid_source (cairo_xlib_surface_t *dst,
const cairo_color_t *color)
{
if ((color->red_short | color->green_short | color->blue_short) <= 0xff)
return alpha_source (dst, color->alpha_short >> 8);
if (CAIRO_ALPHA_SHORT_IS_OPAQUE (color->alpha_short)) {
if (color->red_short >= 0xff00 && color->green_short >= 0xff00 && color->blue_short >= 0xff00)
return white_source (dst);
return opaque_source (dst, color);
} else
return transparent_source (dst, color);
}
static cairo_xlib_source_t *init_source (cairo_xlib_surface_t *dst,
cairo_xlib_surface_t *src)
{
Display *dpy = dst->display->display;
cairo_xlib_source_t *source = &src->embedded_source;
/* As these are frequent and meant to be fast, we track pictures for
* native surface and minimise update requests.
*/
if (source->picture == None) {
XRenderPictureAttributes pa;
_cairo_surface_init (&source->base,
&cairo_xlib_source_backend,
NULL, /* device */
CAIRO_CONTENT_COLOR_ALPHA,
FALSE); /* is_vector */
pa.subwindow_mode = IncludeInferiors;
source->picture = XRenderCreatePicture (dpy,
src->drawable,
src->xrender_format,
CPSubwindowMode, &pa);
source->has_component_alpha = 0;
source->has_matrix = 0;
source->filter = CAIRO_FILTER_NEAREST;
source->extend = CAIRO_EXTEND_NONE;
}
return (cairo_xlib_source_t *) cairo_surface_reference (&source->base);
}
static cairo_surface_t *
embedded_source (cairo_xlib_surface_t *dst,
const cairo_surface_pattern_t *pattern,
const cairo_rectangle_int_t *extents,
int *src_x, int *src_y,
cairo_xlib_source_t *source)
{
Display *dpy = dst->display->display;
cairo_int_status_t status;
XTransform xtransform;
XRenderPictureAttributes pa;
unsigned mask = 0;
status = _cairo_matrix_to_pixman_matrix_offset (&pattern->base.matrix,
pattern->base.filter,
extents->x + extents->width / 2,
extents->y + extents->height / 2,
(pixman_transform_t *)&xtransform,
src_x, src_y);
if (status == CAIRO_INT_STATUS_NOTHING_TO_DO) {
if (source->has_matrix) {
source->has_matrix = 0;
memcpy (&xtransform, &identity, sizeof (identity));
status = CAIRO_INT_STATUS_SUCCESS;
}
} else
source->has_matrix = 1;
if (status == CAIRO_INT_STATUS_SUCCESS)
XRenderSetPictureTransform (dpy, source->picture, &xtransform);
if (source->filter != pattern->base.filter) {
picture_set_filter (dpy, source->picture, pattern->base.filter);
source->filter = pattern->base.filter;
}
if (source->has_component_alpha != pattern->base.has_component_alpha) {
pa.component_alpha = pattern->base.has_component_alpha;
mask |= CPComponentAlpha;
source->has_component_alpha = pattern->base.has_component_alpha;
}
if (source->extend != pattern->base.extend) {
pa.repeat = extend_to_repeat (pattern->base.extend);
mask |= CPRepeat;
source->extend = pattern->base.extend;
}
if (mask)
XRenderChangePicture (dpy, source->picture, mask, &pa);
return &source->base;
}
static cairo_surface_t *
subsurface_source (cairo_xlib_surface_t *dst,
const cairo_surface_pattern_t *pattern,
cairo_bool_t is_mask,
const cairo_rectangle_int_t *extents,
const cairo_rectangle_int_t *sample,
int *src_x, int *src_y)
{
cairo_surface_subsurface_t *sub;
cairo_xlib_surface_t *src;
cairo_xlib_source_t *source;
Display *dpy = dst->display->display;
cairo_int_status_t status;
cairo_surface_pattern_t local_pattern;
XTransform xtransform;
XRenderPictureAttributes pa;
unsigned mask = 0;
sub = (cairo_surface_subsurface_t *) pattern->surface;
if (sample->x >= 0 && sample->y >= 0 &&
sample->x + sample->width <= sub->extents.width &&
sample->y + sample->height <= sub->extents.height)
{
src = (cairo_xlib_surface_t *) sub->target;
status = _cairo_surface_flush (&src->base, 0);
if (unlikely (status))
return _cairo_surface_create_in_error (status);
if (pattern->base.filter == CAIRO_FILTER_NEAREST &&
_cairo_matrix_is_translation (&pattern->base.matrix))
{
*src_x += pattern->base.matrix.x0 + sub->extents.x;
*src_y += pattern->base.matrix.y0 + sub->extents.y;
_cairo_xlib_surface_ensure_picture (src);
return cairo_surface_reference (&src->base);
}
else
{
cairo_surface_pattern_t local_pattern = *pattern;
local_pattern.base.matrix.x0 += sub->extents.x;
local_pattern.base.matrix.y0 += sub->extents.y;
local_pattern.base.extend = CAIRO_EXTEND_NONE;
return embedded_source (dst, &local_pattern, extents,
src_x, src_y, init_source (dst, src));
}
}
if (sub->snapshot && sub->snapshot->type == CAIRO_SURFACE_TYPE_XLIB) {
src = (cairo_xlib_surface_t *) cairo_surface_reference (sub->snapshot);
source = &src->embedded_source;
} else {
src = (cairo_xlib_surface_t *)
_cairo_surface_create_scratch (&dst->base,
sub->base.content,
sub->extents.width,
sub->extents.height,
NULL);
if (src->base.type != CAIRO_SURFACE_TYPE_XLIB) {
cairo_surface_destroy (&src->base);
return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
}
_cairo_pattern_init_for_surface (&local_pattern, sub->target);
cairo_matrix_init_translate (&local_pattern.base.matrix,
sub->extents.x, sub->extents.y);
local_pattern.base.filter = CAIRO_FILTER_NEAREST;
status = _cairo_surface_paint (&src->base,
CAIRO_OPERATOR_SOURCE,
&local_pattern.base,
NULL);
_cairo_pattern_fini (&local_pattern.base);
if (unlikely (status)) {
cairo_surface_destroy (&src->base);
return _cairo_surface_create_in_error (status);
}
_cairo_xlib_surface_ensure_picture (src);
_cairo_surface_subsurface_set_snapshot (&sub->base, &src->base);
source = &src->embedded_source;
source->has_component_alpha = 0;
source->has_matrix = 0;
source->filter = CAIRO_FILTER_NEAREST;
source->extend = CAIRO_EXTEND_NONE;
}
status = _cairo_matrix_to_pixman_matrix_offset (&pattern->base.matrix,
pattern->base.filter,
extents->x + extents->width / 2,
extents->y + extents->height / 2,
(pixman_transform_t *)&xtransform,
src_x, src_y);
if (status == CAIRO_INT_STATUS_NOTHING_TO_DO) {
if (source->has_matrix) {
source->has_matrix = 0;
memcpy (&xtransform, &identity, sizeof (identity));
status = CAIRO_INT_STATUS_SUCCESS;
}
} else
source->has_matrix = 1;
if (status == CAIRO_INT_STATUS_SUCCESS)
XRenderSetPictureTransform (dpy, src->picture, &xtransform);
if (source->filter != pattern->base.filter) {
picture_set_filter (dpy, src->picture, pattern->base.filter);
source->filter = pattern->base.filter;
}
if (source->has_component_alpha != pattern->base.has_component_alpha) {
pa.component_alpha = pattern->base.has_component_alpha;
mask |= CPComponentAlpha;
source->has_component_alpha = pattern->base.has_component_alpha;
}
if (source->extend != pattern->base.extend) {
pa.repeat = extend_to_repeat (pattern->base.extend);
mask |= CPRepeat;
source->extend = pattern->base.extend;
}
if (mask)
XRenderChangePicture (dpy, src->picture, mask, &pa);
return &src->base;
}
static cairo_surface_t *
native_source (cairo_xlib_surface_t *dst,
const cairo_surface_pattern_t *pattern,
cairo_bool_t is_mask,
const cairo_rectangle_int_t *extents,
const cairo_rectangle_int_t *sample,
int *src_x, int *src_y)
{
cairo_xlib_surface_t *src;
cairo_int_status_t status;
if (_cairo_surface_is_subsurface (pattern->surface))
return subsurface_source (dst, pattern, is_mask,
extents, sample,
src_x, src_y);
src = unwrap_source (pattern);
status = _cairo_surface_flush (&src->base, 0);
if (unlikely (status))
return _cairo_surface_create_in_error (status);
if (pattern->base.filter == CAIRO_FILTER_NEAREST &&
sample->x >= 0 && sample->y >= 0 &&
sample->x + sample->width <= src->width &&
sample->y + sample->height <= src->height &&
_cairo_matrix_is_translation (&pattern->base.matrix))
{
*src_x += pattern->base.matrix.x0;
*src_y += pattern->base.matrix.y0;
_cairo_xlib_surface_ensure_picture (src);
return cairo_surface_reference (&src->base);
}
return embedded_source (dst, pattern, extents, src_x, src_y,
init_source (dst, src));
}
static cairo_surface_t *
recording_pattern_get_surface (const cairo_pattern_t *pattern)
{
cairo_surface_t *surface;
surface = ((const cairo_surface_pattern_t *) pattern)->surface;
if (_cairo_surface_is_paginated (surface))
return cairo_surface_reference (_cairo_paginated_surface_get_recording (surface));
if (_cairo_surface_is_snapshot (surface))
return _cairo_surface_snapshot_get_target (surface);
return cairo_surface_reference (surface);
}
static cairo_surface_t *
record_source (cairo_xlib_surface_t *dst,
const cairo_surface_pattern_t *pattern,
cairo_bool_t is_mask,
const cairo_rectangle_int_t *extents,
const cairo_rectangle_int_t *sample,
int *src_x, int *src_y)
{
cairo_xlib_surface_t *src;
cairo_surface_t *recording;
cairo_matrix_t matrix, m;
cairo_status_t status;
cairo_rectangle_int_t upload, limit;
upload = *sample;
if (_cairo_surface_get_extents (pattern->surface, &limit) &&
! _cairo_rectangle_intersect (&upload, &limit))
{
if (pattern->base.extend == CAIRO_EXTEND_NONE)
return alpha_source (dst, 0);
upload = limit;
}
src = (cairo_xlib_surface_t *)
_cairo_surface_create_scratch (&dst->base,
pattern->surface->content,
upload.width,
upload.height,
NULL);
if (src->base.type != CAIRO_SURFACE_TYPE_XLIB) {
cairo_surface_destroy (&src->base);
return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
}
cairo_matrix_init_translate (&matrix, upload.x, upload.y);
recording = recording_pattern_get_surface (&pattern->base),
status = _cairo_recording_surface_replay_with_clip (recording,
&matrix, &src->base,
NULL);
cairo_surface_destroy (recording);
if (unlikely (status)) {
cairo_surface_destroy (&src->base);
return _cairo_surface_create_in_error (status);
}
matrix = pattern->base.matrix;
if (upload.x | upload.y) {
cairo_matrix_init_translate (&m, -upload.x, -upload.y);
cairo_matrix_multiply (&matrix, &matrix, &m);
}
_cairo_xlib_surface_ensure_picture (src);
if (! picture_set_properties (src->display, src->picture,
&pattern->base, &matrix, extents,
src_x, src_y))
{
cairo_surface_destroy (&src->base);
return render_pattern (dst, &pattern->base, is_mask,
extents, src_x, src_y);
}
return &src->base;
}
static cairo_surface_t *
surface_source (cairo_xlib_surface_t *dst,
const cairo_surface_pattern_t *pattern,
cairo_bool_t is_mask,
const cairo_rectangle_int_t *extents,
const cairo_rectangle_int_t *sample,
int *src_x, int *src_y)
{
cairo_surface_t *src;
cairo_xlib_surface_t *xsrc;
cairo_surface_pattern_t local_pattern;
cairo_status_t status;
cairo_rectangle_int_t upload, limit;
src = pattern->surface;
if (src->type == CAIRO_SURFACE_TYPE_IMAGE &&
src->device == dst->base.device &&
_cairo_xlib_shm_surface_get_pixmap (src)) {
cairo_xlib_proxy_t *proxy;
proxy = _cairo_malloc (sizeof(*proxy));
if (unlikely (proxy == NULL))
return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
_cairo_surface_init (&proxy->source.base,
&cairo_xlib_proxy_backend,
dst->base.device,
src->content,
src->is_vector);
proxy->source.dpy = dst->display->display;
proxy->source.picture = XRenderCreatePicture (proxy->source.dpy,
_cairo_xlib_shm_surface_get_pixmap (src),
_cairo_xlib_shm_surface_get_xrender_format (src),
0, NULL);
proxy->source.pixmap = None;
proxy->source.has_component_alpha = 0;
proxy->source.has_matrix = 0;
proxy->source.filter = CAIRO_FILTER_NEAREST;
proxy->source.extend = CAIRO_EXTEND_NONE;
proxy->owner = cairo_surface_reference (src);
return embedded_source (dst, pattern, extents, src_x, src_y,
&proxy->source);
}
upload = *sample;
if (_cairo_surface_get_extents (pattern->surface, &limit)) {
if (pattern->base.extend == CAIRO_EXTEND_NONE) {
if (! _cairo_rectangle_intersect (&upload, &limit))
return alpha_source (dst, 0);
} else if (pattern->base.extend == CAIRO_EXTEND_PAD) {
if (! _cairo_rectangle_intersect (&upload, &limit))
upload = limit;
} else {
if (upload.x < limit.x ||
upload.x + upload.width > limit.x + limit.width ||
upload.y < limit.y ||
upload.y + upload.height > limit.y + limit.height)
{
upload = limit;
}
}
}
xsrc = (cairo_xlib_surface_t *)
_cairo_surface_create_scratch (&dst->base,
src->content,
upload.width,
upload.height,
NULL);
if (xsrc->base.type != CAIRO_SURFACE_TYPE_XLIB) {
cairo_surface_destroy (src);
cairo_surface_destroy (&xsrc->base);
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
}
if (_cairo_surface_is_image (src)) {
status = _cairo_xlib_surface_draw_image (xsrc, (cairo_image_surface_t *)src,
upload.x, upload.y,
upload.width, upload.height,
0, 0);
} else {
cairo_image_surface_t *image;
cairo_rectangle_int_t map_extents = { 0,0, upload.width,upload.height };
image = _cairo_surface_map_to_image (&xsrc->base, &map_extents);
_cairo_pattern_init_for_surface (&local_pattern, pattern->surface);
cairo_matrix_init_translate (&local_pattern.base.matrix,
upload.x, upload.y);
status = _cairo_surface_paint (&image->base,
CAIRO_OPERATOR_SOURCE,
&local_pattern.base,
NULL);
_cairo_pattern_fini (&local_pattern.base);
status = _cairo_surface_unmap_image (&xsrc->base, image);
if (unlikely (status)) {
cairo_surface_destroy (&xsrc->base);
return _cairo_surface_create_in_error (status);
}
status = _cairo_xlib_surface_put_shm (xsrc);
if (unlikely (status)) {
cairo_surface_destroy (&xsrc->base);
return _cairo_surface_create_in_error (status);
}
}
_cairo_pattern_init_static_copy (&local_pattern.base, &pattern->base);
if (upload.x | upload.y) {
cairo_matrix_t m;
cairo_matrix_init_translate (&m, -upload.x, -upload.y);
cairo_matrix_multiply (&local_pattern.base.matrix,
&local_pattern.base.matrix,
&m);
}
*src_x = *src_y = 0;
_cairo_xlib_surface_ensure_picture (xsrc);
if (! picture_set_properties (xsrc->display,
xsrc->picture,
&local_pattern.base,
&local_pattern.base.matrix,
extents,
src_x, src_y))
{
cairo_surface_destroy (&xsrc->base);
return render_pattern (dst, &pattern->base,
is_mask, extents,
src_x, src_y);
}
return &xsrc->base;
}
static cairo_bool_t
pattern_is_supported (cairo_xlib_display_t *display,
const cairo_pattern_t *pattern)
{
if (pattern->type == CAIRO_PATTERN_TYPE_MESH)
return FALSE;
if (display->buggy_pad_reflect) {
if (pattern->extend == CAIRO_EXTEND_REPEAT || pattern->extend == CAIRO_EXTEND_PAD)
return FALSE;
}
if (display->buggy_gradients) {
if (pattern->type == CAIRO_PATTERN_TYPE_LINEAR || pattern->type == CAIRO_PATTERN_TYPE_RADIAL)
return FALSE;
}
switch (pattern->filter) {
case CAIRO_FILTER_FAST:
case CAIRO_FILTER_NEAREST:
return CAIRO_RENDER_HAS_PICTURE_TRANSFORM (display) ||
_cairo_matrix_is_integer_translation (&pattern->matrix, NULL, NULL);
case CAIRO_FILTER_GOOD:
return CAIRO_RENDER_HAS_FILTER_GOOD (display);
case CAIRO_FILTER_BEST:
return CAIRO_RENDER_HAS_FILTER_BEST (display);
case CAIRO_FILTER_BILINEAR:
case CAIRO_FILTER_GAUSSIAN:
default:
return CAIRO_RENDER_HAS_FILTERS (display);
}
}
cairo_surface_t *
_cairo_xlib_source_create_for_pattern (cairo_surface_t *_dst,
const cairo_pattern_t *pattern,
cairo_bool_t is_mask,
const cairo_rectangle_int_t *extents,
const cairo_rectangle_int_t *sample,
int *src_x, int *src_y)
{
cairo_xlib_surface_t *dst = (cairo_xlib_surface_t *)_dst;
*src_x = *src_y = 0;
if (pattern == NULL || pattern->type == CAIRO_PATTERN_TYPE_SOLID) {
if (pattern == NULL)
pattern = &_cairo_pattern_white.base;
return solid_source (dst, &((cairo_solid_pattern_t *)pattern)->color);
}
if (pattern_is_supported (dst->display, pattern)) {
if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
cairo_surface_pattern_t *spattern = (cairo_surface_pattern_t *)pattern;
if (spattern->surface->type == CAIRO_SURFACE_TYPE_XLIB &&
_cairo_xlib_surface_same_screen (dst,
unwrap_source (spattern)))
return native_source (dst, spattern, is_mask,
extents, sample,
src_x, src_y);
if (spattern->surface->type == CAIRO_SURFACE_TYPE_RECORDING)
return record_source (dst, spattern, is_mask,
extents, sample,
src_x, src_y);
return surface_source (dst, spattern, is_mask,
extents, sample,
src_x, src_y);
}
if (pattern->type == CAIRO_PATTERN_TYPE_LINEAR ||
pattern->type == CAIRO_PATTERN_TYPE_RADIAL)
{
cairo_gradient_pattern_t *gpattern = (cairo_gradient_pattern_t *)pattern;
return gradient_source (dst, gpattern, is_mask, extents, src_x, src_y);
}
}
return render_pattern (dst, pattern, is_mask, extents, src_x, src_y);
}
#endif /* !CAIRO_HAS_XLIB_XCB_FUNCTIONS */