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Make meta-surface store and replay extents of each operation

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To be able to provide the extents of each operation to the backend
during the render phase the meta-surface needs to store the extents
computed by the analysis surface during the analysis phase.

The extents argument is either a pointer to the extents of the operation
stored in the meta-surface or NULL. During analysis the analysis surface
writes the extents to the meta-surface. During the render phase the extents
is made available to paginated surface backends.
This commit is contained in:
Adrian Johnson 2008-10-01 20:52:08 +09:30
parent d682d275b9
commit fb7cfdd94d
3 changed files with 40 additions and 6 deletions
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12
src/cairo-analysis-surface.c
View file

@ -354,6 +354,8 @@ _cairo_analysis_surface_paint (void *abstract_surface,
}
is_empty = _cairo_rectangle_intersect (&extents, &surface->current_clip);
if (paint_extents)
*paint_extents = extents;
status = _add_operation (surface, &extents, backend_status);
@ -432,6 +434,8 @@ _cairo_analysis_surface_mask (void *abstract_surface,
}
is_empty = _cairo_rectangle_intersect (&extents, &surface->current_clip);
if (mask_extents)
*mask_extents = extents;
status = _add_operation (surface, &extents, backend_status);
@ -505,6 +509,8 @@ _cairo_analysis_surface_stroke (void *abstract_surface,
_cairo_box_round_to_rectangle (&box, &extents);
}
if (stroke_extents)
*stroke_extents = extents;
status = _add_operation (surface, &extents, backend_status);
@ -574,6 +580,8 @@ _cairo_analysis_surface_fill (void *abstract_surface,
_cairo_box_round_to_rectangle (&box, &extents);
}
if (fill_extents)
*fill_extents = extents;
status = _add_operation (surface, &extents, backend_status);
@ -642,6 +650,8 @@ _cairo_analysis_surface_show_glyphs (void *abstract_surface,
is_empty = _cairo_rectangle_intersect (&extents, &glyph_extents);
}
if (show_glyphs_extents)
*show_glyphs_extents = extents;
status = _add_operation (surface, &extents, backend_status);
@ -726,6 +736,8 @@ _cairo_analysis_surface_show_text_glyphs (void *abstract_surface,
is_empty = _cairo_rectangle_intersect (&extents, &glyph_extents);
}
if (show_text_glyphs_extents)
*show_text_glyphs_extents = extents;
status = _add_operation (surface, &extents, backend_status);

1
src/cairo-meta-surface-private.h
View file

@ -67,6 +67,7 @@ typedef enum {
typedef struct _cairo_command_header {
cairo_command_type_t type;
cairo_meta_region_type_t region;
cairo_rectangle_int_t extents;
} cairo_command_header_t;
typedef struct _cairo_command_paint {

33
src/cairo-meta-surface.c
View file

@ -232,6 +232,10 @@ _cairo_meta_surface_paint (void *abstract_surface,
command->header.type = CAIRO_COMMAND_PAINT;
command->header.region = CAIRO_META_REGION_ALL;
command->header.extents.x = 0;
command->header.extents.y = 0;
command->header.extents.width = meta->width_pixels;
command->header.extents.height = meta->height_pixels;
command->op = op;
status = _cairo_pattern_init_snapshot (&command->source.base, source);
@ -274,6 +278,10 @@ _cairo_meta_surface_mask (void *abstract_surface,
command->header.type = CAIRO_COMMAND_MASK;
command->header.region = CAIRO_META_REGION_ALL;
command->header.extents.x = 0;
command->header.extents.y = 0;
command->header.extents.width = meta->width_pixels;
command->header.extents.height = meta->height_pixels;
command->op = op;
status = _cairo_pattern_init_snapshot (&command->source.base, source);
@ -321,6 +329,10 @@ _cairo_meta_surface_stroke (void *abstract_surface,
command->header.type = CAIRO_COMMAND_STROKE;
command->header.region = CAIRO_META_REGION_ALL;
command->header.extents.x = 0;
command->header.extents.y = 0;
command->header.extents.width = meta->width_pixels;
command->header.extents.height = meta->height_pixels;
command->op = op;
status = _cairo_pattern_init_snapshot (&command->source.base, source);
@ -377,6 +389,10 @@ _cairo_meta_surface_fill (void *abstract_surface,
command->header.type = CAIRO_COMMAND_FILL;
command->header.region = CAIRO_META_REGION_ALL;
command->header.extents.x = 0;
command->header.extents.y = 0;
command->header.extents.width = meta->width_pixels;
command->header.extents.height = meta->height_pixels;
command->op = op;
status = _cairo_pattern_init_snapshot (&command->source.base, source);
@ -436,6 +452,10 @@ _cairo_meta_surface_show_text_glyphs (void *abstract_surface,
command->header.type = CAIRO_COMMAND_SHOW_TEXT_GLYPHS;
command->header.region = CAIRO_META_REGION_ALL;
command->header.extents.x = 0;
command->header.extents.y = 0;
command->header.extents.width = meta->width_pixels;
command->header.extents.height = meta->height_pixels;
command->op = op;
status = _cairo_pattern_init_snapshot (&command->source.base, source);
@ -811,13 +831,13 @@ _cairo_meta_surface_replay_internal (cairo_surface_t *surface,
case CAIRO_COMMAND_PAINT:
status = _cairo_surface_paint (target,
command->paint.op,
&command->paint.source.base, NULL);
&command->paint.source.base, &command->header.extents);
break;
case CAIRO_COMMAND_MASK:
status = _cairo_surface_mask (target,
command->mask.op,
&command->mask.source.base,
&command->mask.mask.base, NULL);
&command->mask.mask.base, &command->header.extents);
break;
case CAIRO_COMMAND_STROKE:
{
@ -839,7 +859,7 @@ _cairo_meta_surface_replay_internal (cairo_surface_t *surface,
&dev_ctm,
&dev_ctm_inverse,
command->stroke.tolerance,
command->stroke.antialias, NULL);
command->stroke.antialias, &command->header.extents);
break;
}
case CAIRO_COMMAND_FILL:
@ -886,7 +906,8 @@ _cairo_meta_surface_replay_internal (cairo_surface_t *surface,
&dev_ctm,
&dev_ctm_inverse,
stroke_command->stroke.tolerance,
stroke_command->stroke.antialias, NULL);
stroke_command->stroke.antialias,
&stroke_command->header.extents);
i++;
} else
status = _cairo_surface_fill (target,
@ -895,7 +916,7 @@ _cairo_meta_surface_replay_internal (cairo_surface_t *surface,
dev_path,
command->fill.fill_rule,
command->fill.tolerance,
command->fill.antialias, NULL);
command->fill.antialias, &command->header.extents);
break;
}
case CAIRO_COMMAND_SHOW_TEXT_GLYPHS:
@ -932,7 +953,7 @@ _cairo_meta_surface_replay_internal (cairo_surface_t *surface,
dev_glyphs, num_glyphs,
command->show_text_glyphs.clusters, command->show_text_glyphs.num_clusters,
command->show_text_glyphs.cluster_flags,
command->show_text_glyphs.scaled_font, NULL);
command->show_text_glyphs.scaled_font, &command->header.extents);
free (dev_glyphs);
break;