diff options
Diffstat (limited to 'libs/cairo-1.16.0/src/cairo-xlib-display.c')
| -rw-r--r-- | libs/cairo-1.16.0/src/cairo-xlib-display.c | 655 |
1 files changed, 655 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/src/cairo-xlib-display.c b/libs/cairo-1.16.0/src/cairo-xlib-display.c new file mode 100644 index 0000000..add4229 --- /dev/null +++ b/libs/cairo-1.16.0/src/cairo-xlib-display.c @@ -0,0 +1,655 @@ +/* Cairo - a vector graphics library with display and print output + * + * Copyright © 2007 Chris Wilson + * + * 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 + * http://www.mozilla.org/MPL/ + * + * 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 Chris Wilson. + * + * Contributor(s): + * Karl Tomlinson <karlt+@karlt.net>, Mozilla Corporation + */ + +#include "cairoint.h" + +#if !CAIRO_HAS_XLIB_XCB_FUNCTIONS + +#include "cairo-xlib-private.h" +#include "cairo-xlib-xrender-private.h" +#include "cairo-freelist-private.h" +#include "cairo-error-private.h" +#include "cairo-list-inline.h" + +#include <X11/Xlibint.h> /* For XESetCloseDisplay */ + +typedef int (*cairo_xlib_error_func_t) (Display *display, + XErrorEvent *event); + +static cairo_xlib_display_t *_cairo_xlib_display_list; + +static int +_noop_error_handler (Display *display, + XErrorEvent *event) +{ + return False; /* return value is ignored */ +} + +static void +_cairo_xlib_display_finish (void *abstract_display) +{ + cairo_xlib_display_t *display = abstract_display; + Display *dpy = display->display; + + _cairo_xlib_display_fini_shm (display); + + if (! cairo_device_acquire (&display->base)) { + cairo_xlib_error_func_t old_handler; + + /* protect the notifies from triggering XErrors */ + XSync (dpy, False); + old_handler = XSetErrorHandler (_noop_error_handler); + + while (! cairo_list_is_empty (&display->fonts)) { + _cairo_xlib_font_close (cairo_list_first_entry (&display->fonts, + cairo_xlib_font_t, + link)); + } + + while (! cairo_list_is_empty (&display->screens)) { + _cairo_xlib_screen_destroy (display, + cairo_list_first_entry (&display->screens, + cairo_xlib_screen_t, + link)); + } + + XSync (dpy, False); + XSetErrorHandler (old_handler); + + cairo_device_release (&display->base); + } +} + +static void +_cairo_xlib_display_destroy (void *abstract_display) +{ + cairo_xlib_display_t *display = abstract_display; + + free (display); +} + +static int +_cairo_xlib_close_display (Display *dpy, XExtCodes *codes) +{ + cairo_xlib_display_t *display, **prev, *next; + + CAIRO_MUTEX_LOCK (_cairo_xlib_display_mutex); + for (display = _cairo_xlib_display_list; display; display = display->next) + if (display->display == dpy) + break; + CAIRO_MUTEX_UNLOCK (_cairo_xlib_display_mutex); + if (display == NULL) + return 0; + + cairo_device_finish (&display->base); + + /* + * Unhook from the global list + */ + CAIRO_MUTEX_LOCK (_cairo_xlib_display_mutex); + prev = &_cairo_xlib_display_list; + for (display = _cairo_xlib_display_list; display; display = next) { + next = display->next; + if (display->display == dpy) { + *prev = next; + break; + } else + prev = &display->next; + } + CAIRO_MUTEX_UNLOCK (_cairo_xlib_display_mutex); + + display->display = NULL; /* catch any later invalid access */ + cairo_device_destroy (&display->base); + + /* Return value in accordance with requirements of + * XESetCloseDisplay */ + return 0; +} + +static const cairo_device_backend_t _cairo_xlib_device_backend = { + CAIRO_DEVICE_TYPE_XLIB, + + NULL, + NULL, + + NULL, /* flush */ + _cairo_xlib_display_finish, + _cairo_xlib_display_destroy, +}; + +static void _cairo_xlib_display_select_compositor (cairo_xlib_display_t *display) +{ +#if 1 + if (display->render_major > 0 || display->render_minor >= 4) + display->compositor = _cairo_xlib_traps_compositor_get (); + else if (display->render_major > 0 || display->render_minor >= 0) + display->compositor = _cairo_xlib_mask_compositor_get (); + else + display->compositor = _cairo_xlib_core_compositor_get (); +#else + display->compositor = _cairo_xlib_fallback_compositor_get (); +#endif +} + +/** + * _cairo_xlib_device_create: + * @dpy: the display to create the device for + * + * Gets the device belonging to @dpy, or creates it if it doesn't exist yet. + * + * Returns: the device belonging to @dpy + **/ +cairo_device_t * +_cairo_xlib_device_create (Display *dpy) +{ + cairo_xlib_display_t *display; + cairo_xlib_display_t **prev; + cairo_device_t *device; + XExtCodes *codes; + const char *env; + + CAIRO_MUTEX_INITIALIZE (); + + /* There is an apparent deadlock between this mutex and the + * mutex for the display, but it's actually safe. For the + * app to call XCloseDisplay() while any other thread is + * inside this function would be an error in the logic + * app, and the CloseDisplay hook is the only other place we + * acquire this mutex. + */ + CAIRO_MUTEX_LOCK (_cairo_xlib_display_mutex); + + for (prev = &_cairo_xlib_display_list; (display = *prev); prev = &(*prev)->next) + { + if (display->display == dpy) { + /* + * MRU the list + */ + if (prev != &_cairo_xlib_display_list) { + *prev = display->next; + display->next = _cairo_xlib_display_list; + _cairo_xlib_display_list = display; + } + device = cairo_device_reference (&display->base); + goto UNLOCK; + } + } + + display = _cairo_malloc (sizeof (cairo_xlib_display_t)); + if (unlikely (display == NULL)) { + device = _cairo_device_create_in_error (CAIRO_STATUS_NO_MEMORY); + goto UNLOCK; + } + + _cairo_device_init (&display->base, &_cairo_xlib_device_backend); + + display->display = dpy; + cairo_list_init (&display->screens); + cairo_list_init (&display->fonts); + display->closed = FALSE; + + /* Xlib calls out to the extension close_display hooks in LIFO + * order. So we have to ensure that all extensions that we depend + * on in our close_display hook are properly initialized before we + * add our hook. For now, that means Render, so we call into its + * QueryVersion function to ensure it gets initialized. + */ + display->render_major = display->render_minor = -1; + XRenderQueryVersion (dpy, &display->render_major, &display->render_minor); + env = getenv ("CAIRO_DEBUG"); + if (env != NULL && (env = strstr (env, "xrender-version=")) != NULL) { + int max_render_major, max_render_minor; + + env += sizeof ("xrender-version=") - 1; + if (sscanf (env, "%d.%d", &max_render_major, &max_render_minor) != 2) + max_render_major = max_render_minor = -1; + + if (max_render_major < display->render_major || + (max_render_major == display->render_major && + max_render_minor < display->render_minor)) + { + display->render_major = max_render_major; + display->render_minor = max_render_minor; + } + } + + _cairo_xlib_display_select_compositor (display); + + display->white = NULL; + memset (display->alpha, 0, sizeof (display->alpha)); + memset (display->solid, 0, sizeof (display->solid)); + memset (display->solid_cache, 0, sizeof (display->solid_cache)); + memset (display->last_solid_cache, 0, sizeof (display->last_solid_cache)); + + memset (display->cached_xrender_formats, 0, + sizeof (display->cached_xrender_formats)); + + display->force_precision = -1; + + _cairo_xlib_display_init_shm (display); + + /* Prior to Render 0.10, there is no protocol support for gradients and + * we call function stubs instead, which would silently consume the drawing. + */ +#if RENDER_MAJOR == 0 && RENDER_MINOR < 10 + display->buggy_gradients = TRUE; +#else + display->buggy_gradients = FALSE; +#endif + display->buggy_pad_reflect = FALSE; + display->buggy_repeat = FALSE; + + /* This buggy_repeat condition is very complicated because there + * are multiple X server code bases (with multiple versioning + * schemes within a code base), and multiple bugs. + * + * The X servers: + * + * 1. The Vendor=="XFree86" code base with release numbers such + * as 4.7.0 (VendorRelease==40700000). + * + * 2. The Vendor=="X.Org" code base (a descendant of the + * XFree86 code base). It originally had things like + * VendorRelease==60700000 for release 6.7.0 but then changed + * its versioning scheme so that, for example, + * VendorRelease==10400000 for the 1.4.0 X server within the + * X.Org 7.3 release. + * + * The bugs: + * + * 1. The original bug that led to the buggy_repeat + * workaround. This was a bug that Owen Taylor investigated, + * understood well, and characterized against various X + * servers. Confirmed X servers with this bug include: + * + * "XFree86" <= 40500000 + * "X.Org" <= 60802000 (only with old numbering >= 60700000) + * + * 2. A separate bug resulting in a crash of the X server when + * using cairo's extend-reflect test case, (which, surprisingly + * enough was not passing RepeatReflect to the X server, but + * instead using RepeatNormal in a workaround). Nobody to date + * has understood the bug well, but it appears to be gone as of + * the X.Org 1.4.0 server. This bug is coincidentally avoided + * by using the same buggy_repeat workaround. Confirmed X + * servers with this bug include: + * + * "X.org" == 60900000 (old versioning scheme) + * "X.org" < 10400000 (new numbering scheme) + * + * For the old-versioning-scheme X servers we don't know + * exactly when second the bug started, but since bug 1 is + * present through 6.8.2 and bug 2 is present in 6.9.0 it seems + * safest to just blacklist all old-versioning-scheme X servers, + * (just using VendorRelease < 70000000), as buggy_repeat=TRUE. + */ + if (_cairo_xlib_vendor_is_xorg (dpy)) { + if (VendorRelease (dpy) >= 60700000) { + if (VendorRelease (dpy) < 70000000) + display->buggy_repeat = TRUE; + + /* We know that gradients simply do not work in early Xorg servers */ + if (VendorRelease (dpy) < 70200000) + display->buggy_gradients = TRUE; + + /* And the extended repeat modes were not fixed until much later */ + display->buggy_pad_reflect = TRUE; + } else { + if (VendorRelease (dpy) < 10400000) + display->buggy_repeat = TRUE; + + /* Too many bugs in the early drivers */ + if (VendorRelease (dpy) < 10699000) + display->buggy_pad_reflect = TRUE; + } + } else if (strstr (ServerVendor (dpy), "XFree86") != NULL) { + if (VendorRelease (dpy) <= 40500000) + display->buggy_repeat = TRUE; + + display->buggy_gradients = TRUE; + display->buggy_pad_reflect = TRUE; + } + + codes = XAddExtension (dpy); + if (unlikely (codes == NULL)) { + device = _cairo_device_create_in_error (CAIRO_STATUS_NO_MEMORY); + free (display); + goto UNLOCK; + } + + XESetCloseDisplay (dpy, codes->extension, _cairo_xlib_close_display); + cairo_device_reference (&display->base); /* add one for the CloseDisplay */ + + display->next = _cairo_xlib_display_list; + _cairo_xlib_display_list = display; + + device = &display->base; + +UNLOCK: + CAIRO_MUTEX_UNLOCK (_cairo_xlib_display_mutex); + return device; +} + +cairo_status_t +_cairo_xlib_display_acquire (cairo_device_t *device, cairo_xlib_display_t **display) +{ + cairo_status_t status; + + status = cairo_device_acquire (device); + if (status) + return status; + + *display = (cairo_xlib_display_t *) device; + return CAIRO_STATUS_SUCCESS; +} + +XRenderPictFormat * +_cairo_xlib_display_get_xrender_format_for_pixman(cairo_xlib_display_t *display, + pixman_format_code_t format) +{ + Display *dpy = display->display; + XRenderPictFormat tmpl; + int mask; + +#define MASK(x) ((1<<(x))-1) + + tmpl.depth = PIXMAN_FORMAT_DEPTH(format); + mask = PictFormatType | PictFormatDepth; + + switch (PIXMAN_FORMAT_TYPE(format)) { + case PIXMAN_TYPE_ARGB: + tmpl.type = PictTypeDirect; + + tmpl.direct.alphaMask = MASK(PIXMAN_FORMAT_A(format)); + if (PIXMAN_FORMAT_A(format)) + tmpl.direct.alpha = (PIXMAN_FORMAT_R(format) + + PIXMAN_FORMAT_G(format) + + PIXMAN_FORMAT_B(format)); + + tmpl.direct.redMask = MASK(PIXMAN_FORMAT_R(format)); + tmpl.direct.red = (PIXMAN_FORMAT_G(format) + + PIXMAN_FORMAT_B(format)); + + tmpl.direct.greenMask = MASK(PIXMAN_FORMAT_G(format)); + tmpl.direct.green = PIXMAN_FORMAT_B(format); + + tmpl.direct.blueMask = MASK(PIXMAN_FORMAT_B(format)); + tmpl.direct.blue = 0; + + mask |= PictFormatRed | PictFormatRedMask; + mask |= PictFormatGreen | PictFormatGreenMask; + mask |= PictFormatBlue | PictFormatBlueMask; + mask |= PictFormatAlpha | PictFormatAlphaMask; + break; + + case PIXMAN_TYPE_ABGR: + tmpl.type = PictTypeDirect; + + tmpl.direct.alphaMask = MASK(PIXMAN_FORMAT_A(format)); + if (tmpl.direct.alphaMask) + tmpl.direct.alpha = (PIXMAN_FORMAT_B(format) + + PIXMAN_FORMAT_G(format) + + PIXMAN_FORMAT_R(format)); + + tmpl.direct.blueMask = MASK(PIXMAN_FORMAT_B(format)); + tmpl.direct.blue = (PIXMAN_FORMAT_G(format) + + PIXMAN_FORMAT_R(format)); + + tmpl.direct.greenMask = MASK(PIXMAN_FORMAT_G(format)); + tmpl.direct.green = PIXMAN_FORMAT_R(format); + + tmpl.direct.redMask = MASK(PIXMAN_FORMAT_R(format)); + tmpl.direct.red = 0; + + mask |= PictFormatRed | PictFormatRedMask; + mask |= PictFormatGreen | PictFormatGreenMask; + mask |= PictFormatBlue | PictFormatBlueMask; + mask |= PictFormatAlpha | PictFormatAlphaMask; + break; + + case PIXMAN_TYPE_BGRA: + tmpl.type = PictTypeDirect; + + tmpl.direct.blueMask = MASK(PIXMAN_FORMAT_B(format)); + tmpl.direct.blue = (PIXMAN_FORMAT_BPP(format) - PIXMAN_FORMAT_B(format)); + + tmpl.direct.greenMask = MASK(PIXMAN_FORMAT_G(format)); + tmpl.direct.green = (PIXMAN_FORMAT_BPP(format) - PIXMAN_FORMAT_B(format) - + PIXMAN_FORMAT_G(format)); + + tmpl.direct.redMask = MASK(PIXMAN_FORMAT_R(format)); + tmpl.direct.red = (PIXMAN_FORMAT_BPP(format) - PIXMAN_FORMAT_B(format) - + PIXMAN_FORMAT_G(format) - PIXMAN_FORMAT_R(format)); + + tmpl.direct.alphaMask = MASK(PIXMAN_FORMAT_A(format)); + tmpl.direct.alpha = 0; + + mask |= PictFormatRed | PictFormatRedMask; + mask |= PictFormatGreen | PictFormatGreenMask; + mask |= PictFormatBlue | PictFormatBlueMask; + mask |= PictFormatAlpha | PictFormatAlphaMask; + break; + + case PIXMAN_TYPE_A: + tmpl.type = PictTypeDirect; + + tmpl.direct.alpha = 0; + tmpl.direct.alphaMask = MASK(PIXMAN_FORMAT_A(format)); + + mask |= PictFormatAlpha | PictFormatAlphaMask; + break; + + case PIXMAN_TYPE_COLOR: + case PIXMAN_TYPE_GRAY: + /* XXX Find matching visual/colormap */ + tmpl.type = PictTypeIndexed; + //tmpl.colormap = screen->visuals[PIXMAN_FORMAT_VIS(format)].vid; + //mask |= PictFormatColormap; + return NULL; + } +#undef MASK + + /* XXX caching? */ + return XRenderFindFormat(dpy, mask, &tmpl, 0); +} + +XRenderPictFormat * +_cairo_xlib_display_get_xrender_format (cairo_xlib_display_t *display, + cairo_format_t format) +{ + XRenderPictFormat *xrender_format; + + xrender_format = display->cached_xrender_formats[format]; + if (xrender_format == NULL) { + int pict_format = PictStandardNUM; + + switch (format) { + case CAIRO_FORMAT_A1: + pict_format = PictStandardA1; break; + case CAIRO_FORMAT_A8: + pict_format = PictStandardA8; break; + case CAIRO_FORMAT_RGB24: + pict_format = PictStandardRGB24; break; + case CAIRO_FORMAT_RGB16_565: + xrender_format = _cairo_xlib_display_get_xrender_format_for_pixman(display, + PIXMAN_r5g6b5); + break; + case CAIRO_FORMAT_RGB30: + xrender_format = _cairo_xlib_display_get_xrender_format_for_pixman(display, + PIXMAN_x2r10g10b10); + break; + case CAIRO_FORMAT_INVALID: + default: + ASSERT_NOT_REACHED; + case CAIRO_FORMAT_ARGB32: + pict_format = PictStandardARGB32; break; + } + if (pict_format != PictStandardNUM) + xrender_format = + XRenderFindStandardFormat (display->display, pict_format); + display->cached_xrender_formats[format] = xrender_format; + } + + return xrender_format; +} + +cairo_xlib_screen_t * +_cairo_xlib_display_get_screen (cairo_xlib_display_t *display, + Screen *screen) +{ + cairo_xlib_screen_t *info; + + cairo_list_foreach_entry (info, cairo_xlib_screen_t, &display->screens, link) { + if (info->screen == screen) { + if (display->screens.next != &info->link) + cairo_list_move (&info->link, &display->screens); + return info; + } + } + + return NULL; +} + +cairo_bool_t +_cairo_xlib_display_has_repeat (cairo_device_t *device) +{ + return ! ((cairo_xlib_display_t *) device)->buggy_repeat; +} + +cairo_bool_t +_cairo_xlib_display_has_reflect (cairo_device_t *device) +{ + return ! ((cairo_xlib_display_t *) device)->buggy_pad_reflect; +} + +cairo_bool_t +_cairo_xlib_display_has_gradients (cairo_device_t *device) +{ + return ! ((cairo_xlib_display_t *) device)->buggy_gradients; +} + +/** + * cairo_xlib_device_debug_cap_xrender_version: + * @device: a #cairo_device_t for the Xlib backend + * @major_version: major version to restrict to + * @minor_version: minor version to restrict to + * + * Restricts all future Xlib surfaces for this devices to the specified version + * of the RENDER extension. This function exists solely for debugging purpose. + * It lets you find out how cairo would behave with an older version of + * the RENDER extension. + * + * Use the special values -1 and -1 for disabling the RENDER extension. + * + * Since: 1.12 + **/ +void +cairo_xlib_device_debug_cap_xrender_version (cairo_device_t *device, + int major_version, + int minor_version) +{ + cairo_xlib_display_t *display = (cairo_xlib_display_t *) device; + + if (device == NULL || device->status) + return; + + if (device->backend->type != CAIRO_DEVICE_TYPE_XLIB) + return; + + if (major_version < display->render_major || + (major_version == display->render_major && + minor_version < display->render_minor)) + { + display->render_major = major_version; + display->render_minor = minor_version; + } + + _cairo_xlib_display_select_compositor (display); +} + +/** + * cairo_xlib_device_debug_set_precision: + * @device: a #cairo_device_t for the Xlib backend + * @precision: the precision to use + * + * Render supports two modes of precision when rendering trapezoids. Set + * the precision to the desired mode. + * + * Since: 1.12 + **/ +void +cairo_xlib_device_debug_set_precision (cairo_device_t *device, + int precision) +{ + if (device == NULL || device->status) + return; + if (device->backend->type != CAIRO_DEVICE_TYPE_XLIB) { + cairo_status_t status; + + status = _cairo_device_set_error (device, CAIRO_STATUS_DEVICE_TYPE_MISMATCH); + (void) status; + return; + } + + ((cairo_xlib_display_t *) device)->force_precision = precision; +} + +/** + * cairo_xlib_device_debug_get_precision: + * @device: a #cairo_device_t for the Xlib backend + * + * Get the Xrender precision mode. + * + * Returns: the render precision mode + * + * Since: 1.12 + **/ +int +cairo_xlib_device_debug_get_precision (cairo_device_t *device) +{ + if (device == NULL || device->status) + return -1; + if (device->backend->type != CAIRO_DEVICE_TYPE_XLIB) { + cairo_status_t status; + + status = _cairo_device_set_error (device, CAIRO_STATUS_DEVICE_TYPE_MISMATCH); + (void) status; + return -1; + } + + return ((cairo_xlib_display_t *) device)->force_precision; +} + +#endif /* !CAIRO_HAS_XLIB_XCB_FUNCTIONS */ |