src/hb-coretext.cc | 152 ++++++++++++++++++++++++++++++++++-------------------
1 file changed, 100 insertions(+), 52 deletions(-)
New commits:
commit 5a0eed3b50629be4826e4e9428f2c3255195395d
Author: Behdad Esfahbod <beh...@behdad.org>
Date: Mon Aug 11 23:47:16 2014 -0400
[coretext] Implement vertical shaping
Currently doesn't work though, we detect font fallback. Apparently
matching on ct_font is not safe for this. Looks like commit
25f4fb9b56bb3f8bec821571c78f8829e40daa54 wasn't enough after all.
diff --git a/src/hb-coretext.cc b/src/hb-coretext.cc
index ee6745b..fc21809 100644
--- a/src/hb-coretext.cc
+++ b/src/hb-coretext.cc
@@ -685,6 +685,10 @@ retry:
FAIL ("CFAttributedStringCreateMutable failed");
CFAttributedStringReplaceString (attr_string, CFRangeMake (0, 0),
string_ref);
CFAttributedStringSetAttribute (attr_string, CFRangeMake (0, chars_len),
+ kCTVerticalFormsAttributeName,
+ HB_DIRECTION_IS_VERTICAL
(buffer->props.direction) ?
+ kCFBooleanTrue : kCFBooleanFalse);
+ CFAttributedStringSetAttribute (attr_string, CFRangeMake (0, chars_len),
kCTFontAttributeName, font_data->ct_font);
if (num_features)
@@ -739,6 +743,7 @@ retry:
CFArrayRef glyph_runs = CTLineGetGlyphRuns (line);
unsigned int num_runs = CFArrayGetCount (glyph_runs);
+ DEBUG_MSG (CORETEXT, NULL, "Num runs: %d", num_runs);
buffer->len = 0;
uint32_t status_and = ~0, status_or = 0;
@@ -778,6 +783,8 @@ retry:
if (!matched)
{
CFRange range = CTRunGetStringRange (run);
+ DEBUG_MSG (CORETEXT, run, "Run used fallback font: %ld..%ld",
+ range.location, range.location + range.length);
if (!buffer->ensure_inplace (buffer->len + range.length))
goto resize_and_retry;
hb_glyph_info_t *info = buffer->info + buffer->len;
@@ -818,54 +825,73 @@ retry:
if (!buffer->ensure (buffer->len + num_glyphs))
goto resize_and_retry;
+ hb_glyph_info_t *run_info = buffer->info + buffer->len;
+
/* Testing used to indicate that CTRunGetGlyphsPtr, etc (almost?) always
* succeed, and so copying data to our own buffer will be rare. Reports
* have it that this changed in OS X 10.10 Yosemite, and NULL is returned
* frequently. At any rate, we can test that codepath by setting USE_PTR
* to false. */
#define USE_PTR true
-
- const CGGlyph* glyphs = USE_PTR ? CTRunGetGlyphsPtr (run) : NULL;
- if (!glyphs) {
- ALLOCATE_ARRAY (CGGlyph, glyph_buf, num_glyphs, goto resize_and_retry);
- CTRunGetGlyphs (run, range_all, glyph_buf);
- glyphs = glyph_buf;
- }
-
- const CGPoint* positions = USE_PTR ? CTRunGetPositionsPtr (run) : NULL;
- if (!positions) {
- ALLOCATE_ARRAY (CGPoint, position_buf, num_glyphs, goto
resize_and_retry);
- CTRunGetPositions (run, range_all, position_buf);
- positions = position_buf;
+ {
+ const CGGlyph* glyphs = USE_PTR ? CTRunGetGlyphsPtr (run) : NULL;
+ if (!glyphs) {
+ ALLOCATE_ARRAY (CGGlyph, glyph_buf, num_glyphs, goto
resize_and_retry);
+ CTRunGetGlyphs (run, range_all, glyph_buf);
+ glyphs = glyph_buf;
+ }
+ const CFIndex* string_indices = USE_PTR ? CTRunGetStringIndicesPtr
(run) : NULL;
+ if (!string_indices) {
+ ALLOCATE_ARRAY (CFIndex, index_buf, num_glyphs, goto
resize_and_retry);
+ CTRunGetStringIndices (run, range_all, index_buf);
+ string_indices = index_buf;
+ }
+ hb_glyph_info_t *info = run_info;
+ for (unsigned int j = 0; j < num_glyphs; j++)
+ {
+ info->codepoint = glyphs[j];
+ info->cluster = log_clusters[string_indices[j]];
+ info++;
+ }
}
-
- const CFIndex* string_indices = USE_PTR ? CTRunGetStringIndicesPtr (run)
: NULL;
- if (!string_indices) {
- ALLOCATE_ARRAY (CFIndex, index_buf, num_glyphs, goto resize_and_retry);
- CTRunGetStringIndices (run, range_all, index_buf);
- string_indices = index_buf;
+ {
+ const CGPoint* positions = USE_PTR ? CTRunGetPositionsPtr (run) : NULL;
+ if (!positions) {
+ ALLOCATE_ARRAY (CGPoint, position_buf, num_glyphs, goto
resize_and_retry);
+ CTRunGetPositions (run, range_all, position_buf);
+ positions = position_buf;
+ }
+ double run_advance = CTRunGetTypographicBounds (run, range_all, NULL,
NULL, NULL);
+ DEBUG_MSG (CORETEXT, run, "Run advance: %g", run_advance);
+ hb_glyph_info_t *info = run_info;
+ if (HB_DIRECTION_IS_HORIZONTAL (buffer->props.direction))
+ {
+ for (unsigned int j = 0; j < num_glyphs; j++)
+ {
+ double advance = (j + 1 < num_glyphs ? positions[j + 1].x :
positions[0].x + run_advance) - positions[j].x;
+ info->mask = advance;
+ info->var1.u32 = positions[0].x; /* Yes, zero. */
+ info->var2.u32 = positions[j].y;
+ info++;
+ }
+ }
+ else
+ {
+ run_advance = -run_advance;
+ for (unsigned int j = 0; j < num_glyphs; j++)
+ {
+ double advance = (j + 1 < num_glyphs ? positions[j + 1].y :
positions[0].y + run_advance) - positions[j].y;
+ info->mask = advance;
+ info->var1.u32 = positions[j].x;
+ info->var2.u32 = positions[0].y; /* Yes, zero. */
+ info++;
+ }
+ }
}
-
#undef USE_PTR
#undef ALLOCATE_ARRAY
- double run_width = CTRunGetTypographicBounds (run, range_all, NULL,
NULL, NULL);
-
- for (unsigned int j = 0; j < num_glyphs; j++) {
- double advance = (j + 1 < num_glyphs ? positions[j + 1].x :
positions[0].x + run_width) - positions[j].x;
-
- hb_glyph_info_t *info = &buffer->info[buffer->len];
-
- info->codepoint = glyphs[j];
- info->cluster = log_clusters[string_indices[j]];
-
- /* Currently, we do all x-positioning by setting the advance, we never
use x-offset. */
- info->mask = advance;
- info->var1.u32 = 0;
- info->var2.u32 = positions[j].y;
-
- buffer->len++;
- }
+ buffer->len += num_glyphs;
}
/* Make sure all runs had the expected direction. */
@@ -876,15 +902,24 @@ retry:
buffer->clear_positions ();
unsigned int count = buffer->len;
- for (unsigned int i = 0; i < count; ++i) {
- hb_glyph_info_t *info = &buffer->info[i];
- hb_glyph_position_t *pos = &buffer->pos[i];
-
- /* TODO vertical */
- pos->x_advance = info->mask;
- pos->x_offset = info->var1.u32;
- pos->y_offset = info->var2.u32;
- }
+ hb_glyph_info_t *info = buffer->info;
+ hb_glyph_position_t *pos = buffer->pos;
+ if (HB_DIRECTION_IS_HORIZONTAL (buffer->props.direction))
+ for (unsigned int i = 0; i < count; i++)
+ {
+ pos->x_advance = info->mask;
+ pos->x_offset = info->var1.u32;
+ pos->y_offset = info->var2.u32;
+ info++, pos++;
+ }
+ else
+ for (unsigned int i = 0; i < count; i++)
+ {
+ pos->y_advance = info->mask;
+ pos->x_offset = info->var1.u32;
+ pos->y_offset = info->var2.u32;
+ info++, pos++;
+ }
/* Fix up clusters so that we never return out-of-order indices;
* if core text has reordered glyphs, we'll merge them to the
commit 1b55077f03758e49f93b8bc1de678e96ea58718c
Author: Behdad Esfahbod <beh...@behdad.org>
Date: Mon Aug 11 20:45:12 2014 -0400
[coretext] Remove unnecessary alt_size
Wasn't needed after a6b8dc87421de33746b0b14d86d2d1532aec02af.
diff --git a/src/hb-coretext.cc b/src/hb-coretext.cc
index 8caff48..ee6745b 100644
--- a/src/hb-coretext.cc
+++ b/src/hb-coretext.cc
@@ -650,6 +650,7 @@ _hb_coretext_shape (hb_shape_plan_t *shape_plan,
if (0)
{
resize_and_retry:
+ DEBUG_MSG (CORETEXT, buffer, "Buffer resize");
/* string_ref uses the scratch-buffer for backing store, and line
references
* string_ref (via attr_string). We must release those before resizing
buffer. */
assert (string_ref);
@@ -814,8 +815,7 @@ retry:
if (num_glyphs == 0)
continue;
- unsigned int alt_size = (sizeof (CGGlyph) + sizeof (CGPoint) + sizeof
(CFIndex)) / sizeof (hb_glyph_info_t) + 2;
- if (!buffer->ensure (MAX (buffer->len + num_glyphs, alt_size)))
+ if (!buffer->ensure (buffer->len + num_glyphs))
goto resize_and_retry;
/* Testing used to indicate that CTRunGetGlyphsPtr, etc (almost?) always
commit 10b1104d791a0b0103c6bbb083b5819f2b7d328d
Author: Behdad Esfahbod <beh...@behdad.org>
Date: Mon Aug 11 20:02:45 2014 -0400
[coretext] Use CFRunStatus
Assert that all runs had expected direction, and take hint for
non-monotone clusters.
diff --git a/src/hb-coretext.cc b/src/hb-coretext.cc
index 8081bfc..8caff48 100644
--- a/src/hb-coretext.cc
+++ b/src/hb-coretext.cc
@@ -740,12 +740,17 @@ retry:
unsigned int num_runs = CFArrayGetCount (glyph_runs);
buffer->len = 0;
+ uint32_t status_and = ~0, status_or = 0;
const CFRange range_all = CFRangeMake (0, 0);
for (unsigned int i = 0; i < num_runs; i++)
{
CTRunRef run = static_cast<CTRunRef>(CFArrayGetValueAtIndex (glyph_runs,
i));
+ CTRunStatus run_status = CTRunGetStatus (run);
+ status_or |= run_status;
+ status_and &= run_status;
+ DEBUG_MSG (CORETEXT, run, "CTRunStatus: %x", run_status);
/* CoreText does automatic font fallback (AKA "cascading") for
characters
* not supported by the requested font, and provides no way to turn it
off,
@@ -863,6 +868,11 @@ retry:
}
}
+ /* Make sure all runs had the expected direction. */
+ bool backward = HB_DIRECTION_IS_BACKWARD (buffer->props.direction);
+ assert (bool (status_and & kCTRunStatusRightToLeft) == backward);
+ assert (bool (status_or & kCTRunStatusRightToLeft) == backward);
+
buffer->clear_positions ();
unsigned int count = buffer->len;
@@ -878,12 +888,15 @@ retry:
/* Fix up clusters so that we never return out-of-order indices;
* if core text has reordered glyphs, we'll merge them to the
- * beginning of the reordered cluster.
+ * beginning of the reordered cluster. CoreText is nice enough
+ * to tell us whenever it has produced nonmonotonic results...
+ * Note that we assume the input clusters were nonmonotonic to
+ * begin with.
*
* This does *not* mean we'll form the same clusters as Uniscribe
* or the native OT backend, only that the cluster indices will be
* monotonic in the output buffer. */
- if (count > 1)
+ if (count > 1 && (status_or & kCTRunStatusNonMonotonic))
{
hb_glyph_info_t *info = buffer->info;
if (HB_DIRECTION_IS_FORWARD (buffer->props.direction))
commit fd1a6aa8d029c701b1532efa59ce901109cfc216
Author: Behdad Esfahbod <beh...@behdad.org>
Date: Mon Aug 11 20:01:37 2014 -0400
[coretext] Minor
diff --git a/src/hb-coretext.cc b/src/hb-coretext.cc
index 6aab1d8..8081bfc 100644
--- a/src/hb-coretext.cc
+++ b/src/hb-coretext.cc
@@ -678,7 +678,8 @@ retry:
/* Create an attributed string, populate it, and create a line from it,
then release attributed string. */
{
- CFMutableAttributedStringRef attr_string =
CFAttributedStringCreateMutable (NULL, chars_len);
+ CFMutableAttributedStringRef attr_string =
CFAttributedStringCreateMutable (kCFAllocatorDefault,
+
chars_len);
if (unlikely (!attr_string))
FAIL ("CFAttributedStringCreateMutable failed");
CFAttributedStringReplaceString (attr_string, CFRangeMake (0, 0),
string_ref);
commit 130856c705641aa681307b5b51b5fb84e295f382
Author: Behdad Esfahbod <beh...@behdad.org>
Date: Mon Aug 11 19:16:26 2014 -0400
[coretext] Remove debug printf!
diff --git a/src/hb-coretext.cc b/src/hb-coretext.cc
index f4fa744..6aab1d8 100644
--- a/src/hb-coretext.cc
+++ b/src/hb-coretext.cc
@@ -650,7 +650,6 @@ _hb_coretext_shape (hb_shape_plan_t *shape_plan,
if (0)
{
resize_and_retry:
- printf ("HERE");
/* string_ref uses the scratch-buffer for backing store, and line
references
* string_ref (via attr_string). We must release those before resizing
buffer. */
assert (string_ref);
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