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dwrite: Properly set run origin in DWRITE_READING_DIRECTION_RIGHT_TO_LEFT case.

This commit is contained in:
Nikolay Sivov 2015-07-09 12:29:09 +03:00 committed by Alexandre Julliard
parent 8201fa14c9
commit 0dcc9ead9e
1 changed files with 23 additions and 8 deletions
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31
dlls/dwrite/layout.c
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@ -942,11 +942,17 @@ static inline IUnknown *layout_get_effect_from_pos(struct dwrite_textlayout *lay
return ((struct layout_range_effect*)h)->effect;
}
static inline BOOL layout_is_erun_rtl(const struct layout_effective_run *erun)
{
return erun->run->u.regular.run.bidiLevel & 1;
}
/* Effective run is built from consecutive clusters of a single nominal run, 'first_cluster' is 0 based cluster index,
'cluster_count' indicates how many clusters to add, including first one. */
static HRESULT layout_add_effective_run(struct dwrite_textlayout *layout, const struct layout_run *r, UINT32 first_cluster,
UINT32 cluster_count, UINT32 line, FLOAT origin_x, BOOL strikethrough)
{
BOOL is_rtl = layout->format.readingdir == DWRITE_READING_DIRECTION_RIGHT_TO_LEFT;
UINT32 i, start, length, last_cluster;
struct layout_effective_run *run;
@ -958,10 +964,11 @@ static HRESULT layout_add_effective_run(struct dwrite_textlayout *layout, const
return E_OUTOFMEMORY;
inlineobject->object = r->u.object.object;
inlineobject->origin_x = origin_x;
inlineobject->origin_y = 0.0; /* FIXME */
inlineobject->align_dx = 0.0;
inlineobject->width = get_cluster_range_width(layout, first_cluster, first_cluster + cluster_count);
inlineobject->origin_x = is_rtl ? origin_x - inlineobject->width : origin_x;
inlineobject->origin_y = 0.0; /* set after line is built */
inlineobject->align_dx = 0.0;
/* It's not clear how these two are set, possibly directionality
is derived from surrounding text (replaced text could have
different ranges which differ in reading direction). */
@ -995,10 +1002,17 @@ static HRESULT layout_add_effective_run(struct dwrite_textlayout *layout, const
run->run = r;
run->start = start = layout->clusters[first_cluster].position;
run->length = length;
run->origin_x = origin_x;
run->width = get_cluster_range_width(layout, first_cluster, first_cluster + cluster_count);
/* Check if run direction matches paragraph direction, if it doesn't adjust by
run width */
if (layout_is_erun_rtl(run) ^ is_rtl)
run->origin_x = is_rtl ? origin_x - run->width : origin_x + run->width;
else
run->origin_x = origin_x;
run->origin_y = 0.0; /* set after line is built */
run->align_dx = 0.0;
run->width = get_cluster_range_width(layout, first_cluster, first_cluster + cluster_count);
run->line = line;
if (r->u.regular.run.glyphCount) {
@ -1304,7 +1318,7 @@ static HRESULT layout_compute_effective_runs(struct dwrite_textlayout *layout)
return hr;
layout->metrics.lineCount = 0;
origin_x = 0.0;
origin_x = is_rtl ? layout->metrics.layoutWidth : 0.0;
line = 0;
run = layout->clusters[0].run;
memset(&metrics, 0, sizeof(metrics));
@ -1321,7 +1335,8 @@ static HRESULT layout_compute_effective_runs(struct dwrite_textlayout *layout)
hr = layout_add_effective_run(layout, run, start, i - start, line, origin_x, s[0]);
if (FAILED(hr))
return hr;
origin_x += get_cluster_range_width(layout, start, i);
origin_x += is_rtl ? -get_cluster_range_width(layout, start, i) :
get_cluster_range_width(layout, start, i);
run = layout->clusters[i].run;
start = i;
}
@ -1409,7 +1424,7 @@ static HRESULT layout_compute_effective_runs(struct dwrite_textlayout *layout)
width = layout->clustermetrics[i].width;
memset(&metrics, 0, sizeof(metrics));
origin_x = 0.0;
origin_x = is_rtl ? layout->metrics.layoutWidth : 0.0;
start = i;
}
else {