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Diffstat (limited to 'src/cairo_xcb_surface.c')
| -rw-r--r-- | src/cairo_xcb_surface.c | 799 |
1 files changed, 799 insertions, 0 deletions
diff --git a/src/cairo_xcb_surface.c b/src/cairo_xcb_surface.c new file mode 100644 index 00000000..ea1f72e1 --- /dev/null +++ b/src/cairo_xcb_surface.c @@ -0,0 +1,799 @@ +/* + * Copyright © 2002 University of Southern California + * + * Permission to use, copy, modify, distribute, and sell this software + * and its documentation for any purpose is hereby granted without + * fee, provided that the above copyright notice appear in all copies + * and that both that copyright notice and this permission notice + * appear in supporting documentation, and that the name of the + * University of Southern California not be used in advertising or + * publicity pertaining to distribution of the software without + * specific, written prior permission. The University of Southern + * California makes no representations about the suitability of this + * software for any purpose. It is provided "as is" without express + * or implied warranty. + * + * THE UNIVERSITY OF SOUTHERN CALIFORNIA DISCLAIMS ALL WARRANTIES WITH + * REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL THE UNIVERSITY OF + * SOUTHERN CALIFORNIA BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS + * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, + * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * Author: Carl D. Worth <cworth@isi.edu> + */ + +#include "cairoint.h" + +cairo_surface_t * +cairo_xcb_surface_create (XCBConnection *dpy, + XCBDRAWABLE drawable, + XCBVISUALTYPE *visual, + cairo_format_t format); + +#define AllPlanes ((unsigned long)~0L) + +static XCBRenderPICTFORMAT +format_from_visual(XCBConnection *c, XCBVISUALID visual) +{ + static const XCBRenderPICTFORMAT nil = { 0 }; + XCBRenderQueryPictFormatsRep *r; + XCBRenderPICTSCREENIter si; + XCBRenderPICTDEPTHIter di; + XCBRenderPICTVISUALIter vi; + + r = XCBRenderQueryPictFormatsReply(c, XCBRenderQueryPictFormats(c), 0); + if(!r) + return nil; + + for(si = XCBRenderQueryPictFormatsScreens(r); si.rem; XCBRenderPICTSCREENNext(&si)) + for(di = XCBRenderPICTSCREENDepths(si.data); di.rem; XCBRenderPICTDEPTHNext(&di)) + for(vi = XCBRenderPICTDEPTHVisuals(di.data); vi.rem; XCBRenderPICTVISUALNext(&vi)) + if(vi.data->visual.id == visual.id) + { + XCBRenderPICTFORMAT ret = vi.data->format; + free(r); + return ret; + } + + return nil; +} + +static XCBRenderPICTFORMAT +format_from_cairo(XCBConnection *c, cairo_format_t fmt) +{ + XCBRenderPICTFORMAT ret = { 0 }; + struct tmpl_t { + XCBRenderDIRECTFORMAT direct; + CARD8 depth; + }; + static const struct tmpl_t templates[] = { + /* CAIRO_FORMAT_ARGB32 */ + { + { + 16, 0xff, + 8, 0xff, + 0, 0xff, + 24, 0xff + }, + 32 + }, + /* CAIRO_FORMAT_RGB24 */ + { + { + 16, 0xff, + 8, 0xff, + 0, 0xff, + 0, 0x00 + }, + 24 + }, + /* CAIRO_FORMAT_A8 */ + { + { + 0, 0x00, + 0, 0x00, + 0, 0x00, + 0, 0xff + }, + 8 + }, + /* CAIRO_FORMAT_A1 */ + { + { + 0, 0x00, + 0, 0x00, + 0, 0x00, + 0, 0x01 + }, + 1 + }, + }; + const struct tmpl_t *tmpl; + XCBRenderQueryPictFormatsRep *r; + XCBRenderPICTFORMINFOIter fi; + + if(fmt < 0 || fmt >= (sizeof(templates) / sizeof(*templates))) + return ret; + tmpl = templates + fmt; + + r = XCBRenderQueryPictFormatsReply(c, XCBRenderQueryPictFormats(c), 0); + if(!r) + return ret; + + for(fi = XCBRenderQueryPictFormatsFormats(r); fi.rem; XCBRenderPICTFORMINFONext(&fi)) + { + const XCBRenderDIRECTFORMAT *t, *f; + if(fi.data->type != XCBRenderPictTypeDirect) + continue; + if(fi.data->depth != tmpl->depth) + continue; + t = &tmpl->direct; + f = &fi.data->direct; + if(t->red_mask && (t->red_mask != f->red_mask || t->red_shift != f->red_shift)) + continue; + if(t->green_mask && (t->green_mask != f->green_mask || t->green_shift != f->green_shift)) + continue; + if(t->blue_mask && (t->blue_mask != f->blue_mask || t->blue_shift != f->blue_shift)) + continue; + if(t->alpha_mask && (t->alpha_mask != f->alpha_mask || t->alpha_shift != f->alpha_shift)) + continue; + + ret = fi.data->id; + } + + free(r); + return ret; +} + +void +cairo_set_target_xcb (cairo_t *cr, + XCBConnection *dpy, + XCBDRAWABLE drawable, + XCBVISUALTYPE *visual, + cairo_format_t format) +{ + cairo_surface_t *surface; + + if (cr->status && cr->status != CAIRO_STATUS_NO_TARGET_SURFACE) + return; + + surface = cairo_xcb_surface_create (dpy, drawable, visual, format); + if (surface == NULL) { + cr->status = CAIRO_STATUS_NO_MEMORY; + return; + } + + cairo_set_target_surface (cr, surface); + + /* cairo_set_target_surface takes a reference, so we must destroy ours */ + cairo_surface_destroy (surface); +} + +typedef struct cairo_xcb_surface { + cairo_surface_t base; + + XCBConnection *dpy; + XCBGCONTEXT gc; + XCBDRAWABLE drawable; + int owns_pixmap; + XCBVISUALTYPE *visual; + cairo_format_t format; + + int render_major; + int render_minor; + + int width; + int height; + + XCBRenderPICTURE picture; +} cairo_xcb_surface_t; + +#define CAIRO_SURFACE_RENDER_AT_LEAST(surface, major, minor) \ + (((surface)->render_major > major) || \ + (((surface)->render_major == major) && ((surface)->render_minor >= minor))) + +#define CAIRO_SURFACE_RENDER_HAS_CREATE_PICTURE(surface) CAIRO_SURFACE_RENDER_AT_LEAST((surface), 0, 0) +#define CAIRO_SURFACE_RENDER_HAS_COMPOSITE(surface) CAIRO_SURFACE_RENDER_AT_LEAST((surface), 0, 0) + +#define CAIRO_SURFACE_RENDER_HAS_FILL_RECTANGLE(surface) CAIRO_SURFACE_RENDER_AT_LEAST((surface), 0, 1) +#define CAIRO_SURFACE_RENDER_HAS_FILL_RECTANGLES(surface) CAIRO_SURFACE_RENDER_AT_LEAST((surface), 0, 1) + +#define CAIRO_SURFACE_RENDER_HAS_DISJOINT(surface) CAIRO_SURFACE_RENDER_AT_LEAST((surface), 0, 2) +#define CAIRO_SURFACE_RENDER_HAS_CONJOINT(surface) CAIRO_SURFACE_RENDER_AT_LEAST((surface), 0, 2) + +#define CAIRO_SURFACE_RENDER_HAS_TRAPEZOIDS(surface) CAIRO_SURFACE_RENDER_AT_LEAST((surface), 0, 4) +#define CAIRO_SURFACE_RENDER_HAS_TRIANGLES(surface) CAIRO_SURFACE_RENDER_AT_LEAST((surface), 0, 4) +#define CAIRO_SURFACE_RENDER_HAS_TRISTRIP(surface) CAIRO_SURFACE_RENDER_AT_LEAST((surface), 0, 4) +#define CAIRO_SURFACE_RENDER_HAS_TRIFAN(surface) CAIRO_SURFACE_RENDER_AT_LEAST((surface), 0, 4) + +#define CAIRO_SURFACE_RENDER_HAS_PICTURE_TRANSFORM(surface) CAIRO_SURFACE_RENDER_AT_LEAST((surface), 0, 6) +#define CAIRO_SURFACE_RENDER_HAS_FILTERS(surface) CAIRO_SURFACE_RENDER_AT_LEAST((surface), 0, 6) + +static int +_CAIRO_FORMAT_DEPTH (cairo_format_t format) +{ + switch (format) { + case CAIRO_FORMAT_A1: + return 1; + case CAIRO_FORMAT_A8: + return 8; + case CAIRO_FORMAT_RGB24: + return 24; + case CAIRO_FORMAT_ARGB32: + default: + return 32; + } +} + +static cairo_surface_t * +_cairo_xcb_surface_create_similar (void *abstract_src, + cairo_format_t format, + int width, + int height) +{ + cairo_xcb_surface_t *src = abstract_src; + XCBConnection *dpy = src->dpy; + XCBDRAWABLE d; + cairo_xcb_surface_t *surface; + + /* XXX: There's a pretty lame heuristic here. This assumes that + * all non-Render X servers do not support depth-32 pixmaps, (and + * that they do support depths 1, 8, and 24). Obviously, it would + * be much better to check the depths that are actually + * supported. */ + if (!dpy + || (!CAIRO_SURFACE_RENDER_HAS_COMPOSITE (src) + && format == CAIRO_FORMAT_ARGB32)) + { + return NULL; + } + + d.pixmap = XCBPIXMAPNew (dpy); + XCBCreatePixmap (dpy, _CAIRO_FORMAT_DEPTH (format), + d.pixmap, src->drawable, + width, height); + + surface = (cairo_xcb_surface_t *) + cairo_xcb_surface_create (dpy, d, NULL, format); + surface->owns_pixmap = 1; + + surface->width = width; + surface->height = height; + + return &surface->base; +} + +static void +_cairo_xcb_surface_destroy (void *abstract_surface) +{ + cairo_xcb_surface_t *surface = abstract_surface; + if (surface->picture.xid) + XCBRenderFreePicture (surface->dpy, surface->picture); + + if (surface->owns_pixmap) + XCBFreePixmap (surface->dpy, surface->drawable.pixmap); + + if (surface->gc.xid) + XCBFreeGC (surface->dpy, surface->gc); + + surface->dpy = 0; + + free (surface); +} + +static double +_cairo_xcb_surface_pixels_per_inch (void *abstract_surface) +{ + /* XXX: We should really get this value from somewhere like Xft.dpy */ + return 96.0; +} + +static int +bits_per_pixel(XCBConnection *c, int depth) +{ + XCBFORMAT *fmt = XCBConnSetupSuccessRepPixmapFormats(XCBGetSetup(c)); + XCBFORMAT *fmtend = fmt + XCBConnSetupSuccessRepPixmapFormatsLength(XCBGetSetup(c)); + + for(; fmt != fmtend; ++fmt) + if(fmt->depth == depth) + return fmt->bits_per_pixel; + + if(depth <= 4) + return 4; + if(depth <= 8) + return 8; + if(depth <= 16) + return 16; + return 32; +} + +static int +bytes_per_line(XCBConnection *c, int width, int bpp) +{ + int bitmap_pad = XCBGetSetup(c)->bitmap_format_scanline_pad; + return (bpp * width + bitmap_pad - 1) & -bitmap_pad; +} + +static cairo_image_surface_t * +_cairo_xcb_surface_get_image (void *abstract_surface) +{ + cairo_xcb_surface_t *surface = abstract_surface; + cairo_image_surface_t *image; + XCBGetGeometryRep *geomrep; + XCBGetImageRep *imagerep; + int bpp; + + geomrep = XCBGetGeometryReply(surface->dpy, XCBGetGeometry(surface->dpy, surface->drawable), 0); + if(!geomrep) + return 0; + + surface->width = geomrep->width; + surface->height = geomrep->height; + free(geomrep); + + imagerep = XCBGetImageReply(surface->dpy, + XCBGetImage(surface->dpy, ZPixmap, + surface->drawable, + 0, 0, + surface->width, surface->height, + AllPlanes), 0); + if(!imagerep) + return 0; + + bpp = bits_per_pixel(surface->dpy, imagerep->depth); + + if (surface->visual) { + cairo_format_masks_t masks; + + /* XXX: Add support here for pictures with external alpha? */ + + masks.bpp = bpp; + masks.alpha_mask = 0; + masks.red_mask = surface->visual->red_mask; + masks.green_mask = surface->visual->green_mask; + masks.blue_mask = surface->visual->blue_mask; + + image = _cairo_image_surface_create_with_masks (XCBGetImageData(imagerep), + &masks, + surface->width, + surface->height, + bytes_per_line(surface->dpy, surface->width, bpp)); + } else { + image = (cairo_image_surface_t *) + cairo_image_surface_create_for_data (XCBGetImageData(imagerep), + surface->format, + surface->width, + surface->height, + bytes_per_line(surface->dpy, surface->width, bpp)); + } + + /* Let the surface take ownership of the data */ + /* XXX: Can probably come up with a cleaner API here. */ + _cairo_image_surface_assume_ownership_of_data (image); + /* FIXME: imagerep can't be freed correctly, I think. must copy. :-( */ + + _cairo_image_surface_set_repeat (image, surface->base.repeat); + _cairo_image_surface_set_matrix (image, &(surface->base.matrix)); + + return image; +} + +static void +_cairo_xcb_surface_ensure_gc (cairo_xcb_surface_t *surface) +{ + if (surface->gc.xid) + return; + + surface->gc = XCBGCONTEXTNew(surface->dpy); + XCBCreateGC (surface->dpy, surface->gc, surface->drawable, 0, 0); +} + +static cairo_status_t +_cairo_xcb_surface_set_image (void *abstract_surface, + cairo_image_surface_t *image) +{ + cairo_xcb_surface_t *surface = abstract_surface; + int bpp, data_len; + + _cairo_xcb_surface_ensure_gc (surface); + bpp = bits_per_pixel(surface->dpy, image->depth); + data_len = bytes_per_line(surface->dpy, surface->width, bpp) * surface->height; + XCBPutImage(surface->dpy, ZPixmap, surface->drawable, surface->gc, + image->width, + image->height, + /* dst_x */ 0, /* dst_y */ 0, + /* left_pad */ 0, image->depth, + data_len, image->data); + + return CAIRO_STATUS_SUCCESS; +} + +static cairo_status_t +_cairo_xcb_surface_set_matrix (void *abstract_surface, cairo_matrix_t *matrix) +{ + cairo_xcb_surface_t *surface = abstract_surface; + XCBRenderTRANSFORM xtransform; + + if (!surface->picture.xid) + return CAIRO_STATUS_SUCCESS; + + xtransform.matrix11 = _cairo_fixed_from_double (matrix->m[0][0]); + xtransform.matrix12 = _cairo_fixed_from_double (matrix->m[1][0]); + xtransform.matrix13 = _cairo_fixed_from_double (matrix->m[2][0]); + + xtransform.matrix21 = _cairo_fixed_from_double (matrix->m[0][1]); + xtransform.matrix22 = _cairo_fixed_from_double (matrix->m[1][1]); + xtransform.matrix23 = _cairo_fixed_from_double (matrix->m[2][1]); + + xtransform.matrix31 = 0; + xtransform.matrix32 = 0; + xtransform.matrix33 = _cairo_fixed_from_double (1); + + if (CAIRO_SURFACE_RENDER_HAS_PICTURE_TRANSFORM (surface)) + { + XCBRenderSetPictureTransform (surface->dpy, surface->picture, xtransform); + } else { + /* XXX: Need support here if using an old RENDER without support + for SetPictureTransform */ + } + + return CAIRO_STATUS_SUCCESS; +} + +static cairo_status_t +_cairo_xcb_surface_set_filter (void *abstract_surface, cairo_filter_t filter) +{ + cairo_xcb_surface_t *surface = abstract_surface; + char *render_filter; + + if (!(surface->picture.xid + && CAIRO_SURFACE_RENDER_HAS_FILTERS(surface))) + return CAIRO_STATUS_SUCCESS; + + switch (filter) { + case CAIRO_FILTER_FAST: + render_filter = "fast"; + break; + case CAIRO_FILTER_GOOD: + render_filter = "good"; + break; + case CAIRO_FILTER_BEST: + render_filter = "best"; + break; + case CAIRO_FILTER_NEAREST: + render_filter = "nearest"; + break; + case CAIRO_FILTER_BILINEAR: + render_filter = "bilinear"; + break; + default: + render_filter = "best"; + break; + } + + XCBRenderSetPictureFilter(surface->dpy, surface->picture, + strlen(render_filter), 0, render_filter, NULL); + + return CAIRO_STATUS_SUCCESS; +} + +static cairo_status_t +_cairo_xcb_surface_set_repeat (void *abstract_surface, int repeat) +{ + cairo_xcb_surface_t *surface = abstract_surface; + + CARD32 mask = XCBRenderCPRepeat; + CARD32 pa[] = { repeat }; + + if (!surface->picture.xid) + return CAIRO_STATUS_SUCCESS; + + XCBRenderChangePicture (surface->dpy, surface->picture, mask, pa); + + return CAIRO_STATUS_SUCCESS; +} + +static cairo_xcb_surface_t * +_cairo_xcb_surface_clone_similar (cairo_surface_t *src, + cairo_xcb_surface_t *template, + cairo_format_t format, + int depth) +{ + cairo_xcb_surface_t *clone; + cairo_image_surface_t *src_image; + + src_image = _cairo_surface_get_image (src); + + clone = (cairo_xcb_surface_t *) + _cairo_xcb_surface_create_similar (template, format, + src_image->width, + src_image->height); + if (clone == NULL) + return NULL; + + _cairo_xcb_surface_set_filter (clone, cairo_surface_get_filter(src)); + + _cairo_xcb_surface_set_image (clone, src_image); + + _cairo_xcb_surface_set_matrix (clone, &(src_image->base.matrix)); + + cairo_surface_destroy (&src_image->base); + + return clone; +} + +static int +_render_operator (cairo_operator_t operator) +{ + switch (operator) { + case CAIRO_OPERATOR_CLEAR: + return XCBRenderPictOpClear; + case CAIRO_OPERATOR_SRC: + return XCBRenderPictOpSrc; + case CAIRO_OPERATOR_DST: + return XCBRenderPictOpDst; + case CAIRO_OPERATOR_OVER: + return XCBRenderPictOpOver; + case CAIRO_OPERATOR_OVER_REVERSE: + return XCBRenderPictOpOverReverse; + case CAIRO_OPERATOR_IN: + return XCBRenderPictOpIn; + case CAIRO_OPERATOR_IN_REVERSE: + return XCBRenderPictOpInReverse; + case CAIRO_OPERATOR_OUT: + return XCBRenderPictOpOut; + case CAIRO_OPERATOR_OUT_REVERSE: + return XCBRenderPictOpOutReverse; + case CAIRO_OPERATOR_ATOP: + return XCBRenderPictOpAtop; + case CAIRO_OPERATOR_ATOP_REVERSE: + return XCBRenderPictOpAtopReverse; + case CAIRO_OPERATOR_XOR: + return XCBRenderPictOpXor; + case CAIRO_OPERATOR_ADD: + return XCBRenderPictOpAdd; + case CAIRO_OPERATOR_SATURATE: + return XCBRenderPictOpSaturate; + default: + return XCBRenderPictOpOver; + } +} + +static cairo_int_status_t +_cairo_xcb_surface_composite (cairo_operator_t operator, + cairo_surface_t *generic_src, + cairo_surface_t *generic_mask, + void *abstract_dst, + int src_x, + int src_y, + int mask_x, + int mask_y, + int dst_x, + int dst_y, + unsigned int width, + unsigned int height) +{ + cairo_xcb_surface_t *dst = abstract_dst; + cairo_xcb_surface_t *src = (cairo_xcb_surface_t *) generic_src; + cairo_xcb_surface_t *mask = (cairo_xcb_surface_t *) generic_mask; + cairo_xcb_surface_t *src_clone = NULL; + cairo_xcb_surface_t *mask_clone = NULL; + XCBRenderPICTURE maskpict = { 0 }; + + + if (!CAIRO_SURFACE_RENDER_HAS_COMPOSITE (dst)) + return CAIRO_INT_STATUS_UNSUPPORTED; + + if (generic_src->backend != dst->base.backend || src->dpy != dst->dpy) { + src_clone = _cairo_xcb_surface_clone_similar (generic_src, dst, + CAIRO_FORMAT_ARGB32, 32); + if (!src_clone) + return CAIRO_INT_STATUS_UNSUPPORTED; + src = src_clone; + } + if (generic_mask && (generic_mask->backend != dst->base.backend || mask->dpy != dst->dpy)) { + mask_clone = _cairo_xcb_surface_clone_similar (generic_mask, dst, + CAIRO_FORMAT_A8, 8); + if (!mask_clone) + return CAIRO_INT_STATUS_UNSUPPORTED; + mask = mask_clone; + } + + if(mask) + maskpict = mask->picture; + + XCBRenderComposite (dst->dpy, + _render_operator (operator), + src->picture, + maskpict, + dst->picture, + src_x, src_y, + mask_x, mask_y, + dst_x, dst_y, + width, height); + + /* XXX: This is messed up. If I can xcb_surface_create, then I + should be able to xcb_surface_destroy. */ + if (src_clone) + cairo_surface_destroy (&src_clone->base); + if (mask_clone) + cairo_surface_destroy (&mask_clone->base); + + return CAIRO_STATUS_SUCCESS; +} + +static cairo_int_status_t +_cairo_xcb_surface_fill_rectangles (void *abstract_surface, + cairo_operator_t operator, + const cairo_color_t *color, + cairo_rectangle_t *rects, + int num_rects) +{ + cairo_xcb_surface_t *surface = abstract_surface; + XCBRenderCOLOR render_color; + + if (!CAIRO_SURFACE_RENDER_HAS_FILL_RECTANGLE (surface)) + return CAIRO_INT_STATUS_UNSUPPORTED; + + render_color.red = color->red_short; + render_color.green = color->green_short; + render_color.blue = color->blue_short; + render_color.alpha = color->alpha_short; + + /* XXX: This XCBRECTANGLE cast is evil... it needs to go away somehow. */ + XCBRenderFillRectangles (surface->dpy, + _render_operator (operator), + surface->picture, + render_color, num_rects, (XCBRECTANGLE *) rects); + + return CAIRO_STATUS_SUCCESS; +} + +static cairo_int_status_t +_cairo_xcb_surface_composite_trapezoids (cairo_operator_t operator, + cairo_surface_t *generic_src, + void *abstract_dst, + int xSrc, + int ySrc, + cairo_trapezoid_t *traps, + int num_traps) +{ + cairo_xcb_surface_t *dst = abstract_dst; + cairo_xcb_surface_t *src = (cairo_xcb_surface_t *) generic_src; + cairo_xcb_surface_t *src_clone = NULL; + + if (!CAIRO_SURFACE_RENDER_HAS_TRAPEZOIDS (dst)) + return CAIRO_INT_STATUS_UNSUPPORTED; + + if (generic_src->backend != dst->base.backend || src->dpy != dst->dpy) { + src_clone = _cairo_xcb_surface_clone_similar (generic_src, dst, + CAIRO_FORMAT_ARGB32, 32); + if (!src_clone) + return CAIRO_INT_STATUS_UNSUPPORTED; + src = src_clone; + } + + /* XXX: The XCBRenderTRAP cast is evil and needs to go away somehow. */ + /* XXX: format_from_cairo is slow. should cache something. */ + XCBRenderTrapezoids (dst->dpy, + _render_operator (operator), + src->picture, dst->picture, + format_from_cairo (dst->dpy, CAIRO_FORMAT_A8), + xSrc, ySrc, num_traps, (XCBRenderTRAP *) traps); + + /* XXX: This is messed up. If I can xcb_surface_create, then I + should be able to xcb_surface_destroy. */ + if (src_clone) + cairo_surface_destroy (&src_clone->base); + + return CAIRO_STATUS_SUCCESS; +} + +static cairo_int_status_t +_cairo_xcb_surface_copy_page (void *abstract_surface) +{ + return CAIRO_INT_STATUS_UNSUPPORTED; +} + +static cairo_int_status_t +_cairo_xcb_surface_show_page (void *abstract_surface) +{ + return CAIRO_INT_STATUS_UNSUPPORTED; +} + +static cairo_int_status_t +_cairo_xcb_surface_set_clip_region (void *abstract_surface, + pixman_region16_t *region) +{ + /* FIXME */ + return CAIRO_INT_STATUS_UNSUPPORTED; +} + +static cairo_int_status_t +_cairo_xcb_surface_create_pattern (void *abstract_surface, + cairo_pattern_t *pattern, + cairo_box_t *extents) +{ + return CAIRO_INT_STATUS_UNSUPPORTED; +} + +static const struct cairo_surface_backend cairo_xcb_surface_backend = { + _cairo_xcb_surface_create_similar, + _cairo_xcb_surface_destroy, + _cairo_xcb_surface_pixels_per_inch, + _cairo_xcb_surface_get_image, + _cairo_xcb_surface_set_image, + _cairo_xcb_surface_set_matrix, + _cairo_xcb_surface_set_filter, + _cairo_xcb_surface_set_repeat, + _cairo_xcb_surface_composite, + _cairo_xcb_surface_fill_rectangles, + _cairo_xcb_surface_composite_trapezoids, + _cairo_xcb_surface_copy_page, + _cairo_xcb_surface_show_page, + _cairo_xcb_surface_set_clip_region, + _cairo_xcb_surface_create_pattern +}; + +static void +query_render_version (XCBConnection *c, cairo_xcb_surface_t *surface) +{ + XCBRenderQueryVersionRep *r; + + surface->render_major = -1; + surface->render_minor = -1; + + if (!XCBRenderInit(c)) + return; + + r = XCBRenderQueryVersionReply(c, XCBRenderQueryVersion(c, 0, 6), 0); + if (!r) + return; + + surface->render_major = r->major_version; + surface->render_minor = r->minor_version; + free(r); +} + +cairo_surface_t * +cairo_xcb_surface_create (XCBConnection *dpy, + XCBDRAWABLE drawable, + XCBVISUALTYPE *visual, + cairo_format_t format) +{ + cairo_xcb_surface_t *surface; + + surface = malloc (sizeof (cairo_xcb_surface_t)); + if (surface == NULL) + return NULL; + + _cairo_surface_init (&surface->base, &cairo_xcb_surface_backend); + + surface->dpy = dpy; + surface->gc.xid = 0; + surface->drawable = drawable; + surface->owns_pixmap = 0; + surface->visual = visual; + surface->format = format; + + query_render_version(dpy, surface); + + if (CAIRO_SURFACE_RENDER_HAS_CREATE_PICTURE (surface)) + { + XCBRenderPICTFORMAT fmt; + if(visual) + fmt = format_from_visual (dpy, visual->visual_id); + else + fmt = format_from_cairo (dpy, format); + surface->picture = XCBRenderPICTURENew(dpy); + XCBRenderCreatePicture (dpy, surface->picture, drawable, + fmt, 0, NULL); + } + else + surface->picture.xid = 0; + + return (cairo_surface_t *) surface; +} |