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Vincent Wei
2019-04-09 18:39:28 +08:00
parent eb81fadbda
commit 7811f86782
1 changed files with 83 additions and 16 deletions
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src/newgdi/layout.c
+83 -16
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@@ -737,25 +737,91 @@ static GlyphRun* insert_run(LAYOUTLINE *line, LayoutState *state,
return glyph_run;
}
#ifdef _DEBUG
static inline int uc32_to_utf8(Uchar32 c, char* outbuf)
{
int len = 0;
int first;
int i;
if (c < 0x80) {
first = 0;
len = 1;
}
else if (c < 0x800) {
first = 0xc0;
len = 2;
}
else if (c < 0x10000) {
first = 0xe0;
len = 3;
}
else if (c < 0x200000) {
first = 0xf0;
len = 4;
}
else if (c < 0x4000000) {
first = 0xf8;
len = 5;
}
else {
first = 0xfc;
len = 6;
}
if (outbuf) {
for (i = len - 1; i > 0; --i) {
outbuf[i] = (c & 0x3f) | 0x80;
c >>= 6;
}
outbuf[0] = c | first;
}
return len;
}
static inline void print_uc (LAYOUT* layout, int index, const char* desc)
{
char utf8_char [10];
Uchar32 uc = layout->truns->ucs[index];
memset(utf8_char, 0, 10);
uc32_to_utf8(uc, utf8_char);
_WRN_PRINTF("%s: character: %s (0x%x) at index: %d",
desc, utf8_char, uc, index);
assert(uc != 0xa);
}
#else
static inline void print_uc (LAYOUT* layout, int index, const char* desc)
{
}
#endif
static inline BOOL can_break_at (LAYOUT *layout,
int offset, BOOL always_wrap_char)
{
Uint32 wrap = layout->rf & GRF_OVERFLOW_WRAP_MASK;
if (offset == layout->truns->nr_ucs)
if (offset == layout->truns->nr_ucs) {
return TRUE;
}
if (always_wrap_char)
if (always_wrap_char) {
wrap = GRF_OVERFLOW_WRAP_ANYWHERE;
}
if (wrap == GRF_OVERFLOW_WRAP_NORMAL)
return (
(layout->bos[offset] & BOV_LB_MASK) == BOV_LB_ALLOWED);
else if (wrap == GRF_OVERFLOW_WRAP_BREAK_WORD)
if (wrap == GRF_OVERFLOW_WRAP_NORMAL) {
return (offset > 0 &&
(layout->bos[offset - 1] & BOV_LB_MASK) == BOV_LB_ALLOWED);
}
else if (wrap == GRF_OVERFLOW_WRAP_BREAK_WORD) {
return (offset > 0 &&
(layout->bos[offset - 1] & BOV_WB_WORD_BOUNDARY));
else if (wrap == GRF_OVERFLOW_WRAP_ANYWHERE)
return (offset > 0 && (layout->bos[offset] & BOV_GB_CHAR_BREAK));
}
else if (wrap == GRF_OVERFLOW_WRAP_ANYWHERE) {
return (offset > 0 &&
(layout->bos[offset - 1] & BOV_GB_CHAR_BREAK));
}
else {
_WRN_PRINTF ("broken Layout");
}
@@ -944,8 +1010,6 @@ retry_break:
/* Shaped lruns should never be broken */
assert (!shape_set);
print_line_runs(line, __FUNCTION__);
return BREAK_SOME_FIT;
}
}
@@ -1164,7 +1228,7 @@ static void layout_line_reorder(LAYOUTLINE *line)
reverse_runs(&line->gruns, runs, line->nr_runs);
}
print_line_runs(line, __FUNCTION__);
//print_line_runs(line, __FUNCTION__);
#if 0 /* test code for list_reverse and reverse_runs */
list_reverse(&line->gruns);
@@ -1698,23 +1762,28 @@ static LAYOUTLINE* check_next_line(LAYOUT* layout, LayoutState* state)
state->start_offset += old_num_chars - state->lrun->len;
wrapped = TRUE;
print_line_runs(line, __FUNCTION__);
//print_line_runs(line, __FUNCTION__);
goto done;
case BREAK_NONE_FIT:
__mg_layout_run_free(state->lrun);
print_line_runs(line, "before uninsert_run");
/* Back up over unused runs to run where there is a break */
while (!list_empty(&line->gruns) &&
line->gruns.prev != break_link) {
uninsert_run(line);
}
/* uninsert the break link */
uninsert_run(line);
print_line_runs(line, "after uninsert_run");
state->start_offset = break_start_offset;
state->remaining_width = break_remaining_width;
print_line_runs(line, __FUNCTION__);
/* determine start text run again */
state->trun = __mg_text_run_get_by_offset_const(layout->truns,
state->start_offset, &state->start_index_in_trun);
@@ -2122,11 +2191,9 @@ LAYOUTLINE* GUIAPI LayoutNextLine(
state.trun = __mg_text_run_get_by_offset_const(layout->truns,
state.line_start_index, &state.start_index_in_trun);
#if 0
_DBG_PRINTF("%s: line_start_index: %d, start_index_in_trun: %d(%p)\n",
__FUNCTION__, state.line_start_index, state.start_index_in_trun,
state.trun);
#endif
if (state.trun == NULL) {
next_line = NULL;