void _cairo_box_round_to_rectangle (cairo_box_t *box, cairo_rectangle_int_t *rectangle) { rectangle->x = _cairo_fixed_integer_floor (box->p1.x); rectangle->y = _cairo_fixed_integer_floor (box->p1.y); rectangle->width = _cairo_fixed_integer_ceil (box->p2.x) - rectangle->x; rectangle->height = _cairo_fixed_integer_ceil (box->p2.y) - rectangle->y; }
/* * Compute a device-space bounding box for the glyphs. */ cairo_status_t _cairo_scaled_font_glyph_device_extents (cairo_scaled_font_t *scaled_font, const cairo_glyph_t *glyphs, int num_glyphs, cairo_rectangle_t *extents) { cairo_status_t status = CAIRO_STATUS_SUCCESS; int i; int min_x = CAIRO_MAXSHORT, max_x = CAIRO_MINSHORT; int min_y = CAIRO_MAXSHORT, max_y = CAIRO_MINSHORT; if (scaled_font->status) return scaled_font->status; for (i = 0; i < num_glyphs; i++) { cairo_scaled_glyph_t *scaled_glyph; int left, top; int right, bottom; int x, y; status = _cairo_scaled_glyph_lookup (scaled_font, glyphs[i].index, CAIRO_SCALED_GLYPH_INFO_METRICS, &scaled_glyph); if (status) { _cairo_scaled_font_set_error (scaled_font, status); return status; } /* glyph images are snapped to pixel locations */ x = (int) floor (glyphs[i].x + 0.5); y = (int) floor (glyphs[i].y + 0.5); left = x + _cairo_fixed_integer_floor(scaled_glyph->bbox.p1.x); top = y + _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.y); right = x + _cairo_fixed_integer_ceil(scaled_glyph->bbox.p2.x); bottom = y + _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.y); if (left < min_x) min_x = left; if (right > max_x) max_x = right; if (top < min_y) min_y = top; if (bottom > max_y) max_y = bottom; } if (min_x < max_x && min_y < max_y) { extents->x = min_x; extents->width = max_x - min_x; extents->y = min_y; extents->height = max_y - min_y; } else { extents->x = extents->y = 0; extents->width = extents->height = 0; } return CAIRO_STATUS_SUCCESS; }
static cairo_int_status_t _cairo_user_scaled_glyph_init (void *abstract_font, cairo_scaled_glyph_t *scaled_glyph, cairo_scaled_glyph_info_t info) { cairo_int_status_t status = CAIRO_STATUS_SUCCESS; cairo_user_scaled_font_t *scaled_font = abstract_font; cairo_surface_t *meta_surface = scaled_glyph->meta_surface; if (!scaled_glyph->meta_surface) { cairo_user_font_face_t *face = (cairo_user_font_face_t *) scaled_font->base.font_face; cairo_text_extents_t extents = scaled_font->default_glyph_extents; cairo_t *cr; cr = _cairo_user_scaled_font_create_meta_context (scaled_font); if (face->scaled_font_methods.render_glyph) status = face->scaled_font_methods.render_glyph ((cairo_scaled_font_t *)scaled_font, _cairo_scaled_glyph_index(scaled_glyph), cr, &extents); else status = CAIRO_STATUS_USER_FONT_ERROR; if (status == CAIRO_STATUS_SUCCESS) status = cairo_status (cr); meta_surface = cairo_surface_reference (cairo_get_target (cr)); cairo_destroy (cr); if (status) { cairo_surface_destroy (meta_surface); return status; } _cairo_scaled_glyph_set_meta_surface (scaled_glyph, &scaled_font->base, meta_surface); /* set metrics */ if (extents.width == 0.) { /* Compute extents.x/y/width/height from meta_surface, in font space */ cairo_box_t bbox; double x1, y1, x2, y2; double x_scale, y_scale; cairo_surface_t *null_surface; cairo_surface_t *analysis_surface; null_surface = _cairo_null_surface_create (cairo_surface_get_content (meta_surface)); analysis_surface = _cairo_analysis_surface_create (null_surface, -1, -1); cairo_surface_destroy (null_surface); _cairo_analysis_surface_set_ctm (analysis_surface, &scaled_font->extent_scale); status = _cairo_meta_surface_replay (meta_surface, analysis_surface); _cairo_analysis_surface_get_bounding_box (analysis_surface, &bbox); cairo_surface_destroy (analysis_surface); if (status) return status; _cairo_box_to_doubles (&bbox, &x1, &y1, &x2, &y2); x_scale = scaled_font->extent_x_scale; y_scale = scaled_font->extent_y_scale; extents.x_bearing = x1 * x_scale; extents.y_bearing = y1 * y_scale; extents.width = (x2 - x1) * x_scale; extents.height = (y2 - y1) * y_scale; } if (scaled_font->base.options.hint_metrics != CAIRO_HINT_METRICS_OFF) { extents.x_advance = _cairo_lround (extents.x_advance / scaled_font->snap_x_scale) * scaled_font->snap_x_scale; extents.y_advance = _cairo_lround (extents.y_advance / scaled_font->snap_y_scale) * scaled_font->snap_y_scale; } _cairo_scaled_glyph_set_metrics (scaled_glyph, &scaled_font->base, &extents); } if (info & CAIRO_SCALED_GLYPH_INFO_SURFACE) { cairo_surface_t *surface; cairo_status_t status = CAIRO_STATUS_SUCCESS; cairo_format_t format; int width, height; /* TODO * extend the glyph cache to support argb glyphs. * need to figure out the semantics and interaction with subpixel * rendering first. */ width = _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.x) - _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.x); height = _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.y) - _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.y); switch (scaled_font->base.options.antialias) { default: case CAIRO_ANTIALIAS_DEFAULT: case CAIRO_ANTIALIAS_GRAY: format = CAIRO_FORMAT_A8; break; case CAIRO_ANTIALIAS_NONE: format = CAIRO_FORMAT_A1; break; case CAIRO_ANTIALIAS_SUBPIXEL: format = CAIRO_FORMAT_ARGB32; break; } surface = cairo_image_surface_create (format, width, height); cairo_surface_set_device_offset (surface, - _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.x), - _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.y)); status = _cairo_meta_surface_replay (meta_surface, surface); if (status) { cairo_surface_destroy(surface); return status; } _cairo_scaled_glyph_set_surface (scaled_glyph, &scaled_font->base, (cairo_image_surface_t *) surface); } if (info & CAIRO_SCALED_GLYPH_INFO_PATH) { cairo_path_fixed_t *path = _cairo_path_fixed_create (); if (!path) return _cairo_error (CAIRO_STATUS_NO_MEMORY); status = _cairo_meta_surface_get_path (meta_surface, path); if (status) { _cairo_path_fixed_destroy (path); return status; } _cairo_scaled_glyph_set_path (scaled_glyph, &scaled_font->base, path); } return status; }
cairo_int_status_t i965_surface_glyphs (void *abstract_surface, cairo_operator_t op, const cairo_pattern_t *source, cairo_glyph_t *g, int num_glyphs, cairo_scaled_font_t *scaled_font, cairo_clip_t *clip, int *num_remaining) { i965_surface_t *surface = abstract_surface; i965_surface_t *mask = NULL; i965_device_t *device; i965_glyphs_t glyphs; cairo_composite_rectangles_t extents; cairo_clip_t local_clip; cairo_bool_t have_clip = FALSE; cairo_bool_t overlap; cairo_region_t *clip_region = NULL; intel_bo_t *last_bo = NULL; cairo_scaled_glyph_t *glyph_cache[64]; cairo_status_t status; int mask_x = 0, mask_y = 0; int i = 0; *num_remaining = 0; status = _cairo_composite_rectangles_init_for_glyphs (&extents, surface->intel.drm.width, surface->intel.drm.height, op, source, scaled_font, g, num_glyphs, clip, &overlap); if (unlikely (status)) return status; if (clip != NULL && _cairo_clip_contains_rectangle (clip, &extents.mask)) clip = NULL; if (clip != NULL && extents.is_bounded) { clip = _cairo_clip_init_copy (&local_clip, clip); status = _cairo_clip_rectangle (clip, &extents.bounded); if (unlikely (status)) return status; have_clip = TRUE; } if (overlap || ! extents.is_bounded) { cairo_format_t format; format = CAIRO_FORMAT_A8; if (scaled_font->options.antialias == CAIRO_ANTIALIAS_SUBPIXEL) format = CAIRO_FORMAT_ARGB32; mask = (i965_surface_t *) i965_surface_create_internal (&i965_device (surface)->intel.base, format, extents.bounded.width, extents.bounded.height, I965_TILING_DEFAULT, TRUE); if (unlikely (mask->intel.drm.base.status)) return mask->intel.drm.base.status; status = _cairo_surface_paint (&mask->intel.drm.base, CAIRO_OPERATOR_CLEAR, &_cairo_pattern_clear.base, NULL); if (unlikely (status)) { cairo_surface_destroy (&mask->intel.drm.base); return status; } i965_shader_init (&glyphs.shader, mask, CAIRO_OPERATOR_ADD); status = i965_shader_acquire_pattern (&glyphs.shader, &glyphs.shader.source, &_cairo_pattern_white.base, &extents.bounded); if (unlikely (status)) { cairo_surface_destroy (&mask->intel.drm.base); return status; } mask_x = -extents.bounded.x; mask_y = -extents.bounded.y; } else { i965_shader_init (&glyphs.shader, surface, op); status = i965_shader_acquire_pattern (&glyphs.shader, &glyphs.shader.source, source, &extents.bounded); if (unlikely (status)) return status; if (clip != NULL) { status = _cairo_clip_get_region (clip, &clip_region); assert (status == CAIRO_STATUS_SUCCESS || status == CAIRO_INT_STATUS_UNSUPPORTED); if (status == CAIRO_INT_STATUS_UNSUPPORTED) i965_shader_set_clip (&glyphs.shader, clip); } } glyphs.head.next = NULL; glyphs.head.bo = NULL; glyphs.head.count = 0; glyphs.tail = &glyphs.head; device = i965_device (surface); if (mask != NULL || clip_region == NULL) { glyphs.get_rectangle = i965_glyphs_emit_rectangle; } else { glyphs.get_rectangle = i965_glyphs_accumulate_rectangle; glyphs.head.bo = intel_bo_create (&device->intel, I965_VERTEX_SIZE, I965_VERTEX_SIZE, FALSE, I915_TILING_NONE, 0); if (unlikely (glyphs.head.bo == NULL)) return _cairo_error (CAIRO_STATUS_NO_MEMORY); glyphs.vbo_base = intel_bo_map (&device->intel, glyphs.head.bo); } glyphs.vbo_offset = 0; status = cairo_device_acquire (&device->intel.base.base); if (unlikely (status)) goto CLEANUP_GLYPHS; _cairo_scaled_font_freeze_cache (scaled_font); //private = _cairo_scaled_font_get_device (scaled_font, device); if (scaled_font->surface_private == NULL) { scaled_font->surface_private = device; scaled_font->surface_backend = surface->intel.drm.base.backend; cairo_list_add (&scaled_font->link, &device->intel.fonts); } memset (glyph_cache, 0, sizeof (glyph_cache)); for (i = 0; i < num_glyphs; i++) { cairo_scaled_glyph_t *scaled_glyph; int x, y, x1, x2, y1, y2; int cache_index = g[i].index % ARRAY_LENGTH (glyph_cache); intel_glyph_t *glyph; scaled_glyph = glyph_cache[cache_index]; if (scaled_glyph == NULL || _cairo_scaled_glyph_index (scaled_glyph) != g[i].index) { status = _cairo_scaled_glyph_lookup (scaled_font, g[i].index, CAIRO_SCALED_GLYPH_INFO_METRICS, &scaled_glyph); if (unlikely (status)) goto FINISH; glyph_cache[cache_index] = scaled_glyph; } if (unlikely (scaled_glyph->metrics.width == 0 || scaled_glyph->metrics.height == 0)) { continue; } /* XXX glyph images are snapped to pixel locations */ x = _cairo_lround (g[i].x); y = _cairo_lround (g[i].y); x1 = x + _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.x); y1 = y + _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.y); x2 = x + _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.x); y2 = y + _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.y); if (x2 < extents.bounded.x || y2 < extents.bounded.y || x1 > extents.bounded.x + extents.bounded.width || y1 > extents.bounded.y + extents.bounded.height) { continue; } if (scaled_glyph->surface_private == NULL) { status = intel_get_glyph (&device->intel, scaled_font, scaled_glyph); if (unlikely (status == CAIRO_INT_STATUS_NOTHING_TO_DO)) { status = CAIRO_STATUS_SUCCESS; continue; } if (unlikely (status)) goto FINISH; } glyph = intel_glyph_pin (scaled_glyph->surface_private); if (glyph->cache->buffer.bo != last_bo) { intel_buffer_cache_t *cache = glyph->cache; glyphs.shader.mask.type.vertex = VS_GLYPHS; glyphs.shader.mask.type.fragment = FS_GLYPHS; glyphs.shader.mask.type.pattern = PATTERN_BASE; glyphs.shader.mask.base.bo = cache->buffer.bo; glyphs.shader.mask.base.format = cache->buffer.format; glyphs.shader.mask.base.width = cache->buffer.width; glyphs.shader.mask.base.height = cache->buffer.height; glyphs.shader.mask.base.stride = cache->buffer.stride; glyphs.shader.mask.base.filter = i965_filter (CAIRO_FILTER_NEAREST); glyphs.shader.mask.base.extend = i965_extend (CAIRO_EXTEND_NONE); glyphs.shader.mask.base.content = CAIRO_CONTENT_ALPHA; /* XXX */ glyphs.shader.committed = FALSE; status = i965_shader_commit (&glyphs.shader, device); if (unlikely (status)) goto FINISH; last_bo = cache->buffer.bo; } x2 = x1 + glyph->width; y2 = y1 + glyph->height; if (mask_x) x1 += mask_x, x2 += mask_x; if (mask_y) y1 += mask_y, y2 += mask_y; i965_add_glyph_rectangle (&glyphs, x1, y1, x2, y2, glyph); } if (mask != NULL && clip_region != NULL) i965_clipped_vertices (device, &glyphs.head, clip_region); status = CAIRO_STATUS_SUCCESS; FINISH: _cairo_scaled_font_thaw_cache (scaled_font); cairo_device_release (surface->intel.drm.base.device); CLEANUP_GLYPHS: i965_shader_fini (&glyphs.shader); if (glyphs.head.bo != NULL) { struct i965_vbo *vbo, *next; intel_bo_destroy (&device->intel, glyphs.head.bo); for (vbo = glyphs.head.next; vbo != NULL; vbo = next) { next = vbo->next; intel_bo_destroy (&device->intel, vbo->bo); free (vbo); } } if (unlikely (status == CAIRO_INT_STATUS_UNSUPPORTED)) { cairo_path_fixed_t path; _cairo_path_fixed_init (&path); status = _cairo_scaled_font_glyph_path (scaled_font, g + i, num_glyphs - i, &path); if (mask_x | mask_y) { _cairo_path_fixed_translate (&path, _cairo_fixed_from_int (mask_x), _cairo_fixed_from_int (mask_y)); } if (likely (status == CAIRO_STATUS_SUCCESS)) { status = surface->intel.drm.base.backend->fill (glyphs.shader.target, glyphs.shader.op, mask != NULL ? &_cairo_pattern_white.base : source, &path, CAIRO_FILL_RULE_WINDING, 0, scaled_font->options.antialias, clip); } _cairo_path_fixed_fini (&path); } if (mask != NULL) { if (likely (status == CAIRO_STATUS_SUCCESS)) { status = i965_surface_mask_internal (surface, op, source, mask, clip, &extents); } cairo_surface_finish (&mask->intel.drm.base); cairo_surface_destroy (&mask->intel.drm.base); } if (have_clip) _cairo_clip_fini (&local_clip); return status; }