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Differential D5222 Diff 16377 source/blender/editors/space_text/text_undo.c

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source/blender/editors/space_text/text_undo.c

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#include "UI_resources.h" #include "UI_resources.h"
#include "RNA_access.h" #include "RNA_access.h"
#include "RNA_define.h" #include "RNA_define.h"
#include "text_intern.h" #include "text_intern.h"
#include "text_format.h" #include "text_format.h"
/* TODO(campbell): undo_system: move text undo out of text block. */
/* -------------------------------------------------------------------- */ /* -------------------------------------------------------------------- */
/** \name Implements ED Undo System /** \name Implements ED Undo System
* \{ */ * \{ */
#define USE_ARRAY_STORE
brechtUnsubmitted
Done
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I'm not a fan of all these #ifdefs, code is easier to read and refactor if there's just a single code path.

brecht: I'm not a fan of all these #ifdefs, code is easier to read and refactor if there's just a…
campbellbartonAuthorUnsubmitted
Done
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Useful for testing and they're kept for edit-mesh since this is more complex/error prone code case.

removed.

campbellbarton: Useful for testing and they're kept for edit-mesh since this is more complex/error prone code…
#ifdef USE_ARRAY_STORE
// # define DEBUG_PRINT
// # define DEBUG_TIME
# ifdef DEBUG_TIME
# include "PIL_time_utildefines.h"
# endif
# include "BLI_array_store.h"
/* check on best size later... */
# define ARRAY_CHUNK_SIZE 128
#endif
typedef struct TextUndoStep { typedef struct TextUndoStep {
UndoStep step; UndoStep step;
UndoRefID_Text text_ref; UndoRefID_Text text_ref;
TextUndoBuf data; struct {
#ifdef USE_ARRAY_STORE
BArrayState *state;
#else
uchar *buf;
#endif
int buf_strlen;
} data;
struct {
int line, line_select;
int column, column_select;
} cursor;
} TextUndoStep; } TextUndoStep;
#ifdef USE_ARRAY_STORE
static struct {
BArrayStore *bs;
brechtUnsubmitted
Done
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Please use longer more descriptive name.

brecht: Please use longer more descriptive name.
int users;
} um_arraystore = {NULL};
brechtUnsubmitted
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Please add comment explaining what um_arraystore is for, and maybe find a more descriptive name.

brecht: Please add comment explaining what `um_arraystore` is for, and maybe find a more descriptive…
#endif
static bool text_undosys_poll(bContext *UNUSED(C)) static bool text_undosys_poll(bContext *UNUSED(C))
{ {
/* Only use when operators initialized. */ /* Only use when operators initialized. */
UndoStack *ustack = ED_undo_stack_get(); UndoStack *ustack = ED_undo_stack_get();
return (ustack->step_init && (ustack->step_init->type == BKE_UNDOSYS_TYPE_TEXT)); return (ustack->step_init && (ustack->step_init->type == BKE_UNDOSYS_TYPE_TEXT));
} }
static void text_undosys_step_encode_init(struct bContext *C, UndoStep *us_p) static void text_undosys_step_encode_init(struct bContext *C, UndoStep *us_p)
{ {
TextUndoStep *us = (TextUndoStep *)us_p; TextUndoStep *us = (TextUndoStep *)us_p;
BLI_assert(BLI_array_is_zeroed(&us->data, 1)); BLI_assert(BLI_array_is_zeroed(&us->data, 1));
UNUSED_VARS(C); UNUSED_VARS(C, us);
/* XXX, use to set the undo type only. */ /* XXX, use to set the undo type only. */
us->data.buf = NULL;
us->data.len = 0;
us->data.pos = -1;
} }
static bool text_undosys_step_encode(struct bContext *C, static bool text_undosys_step_encode(struct bContext *C,
struct Main *UNUSED(bmain), struct Main *UNUSED(bmain),
UndoStep *us_p) UndoStep *us_p)
{ {
TextUndoStep *us = (TextUndoStep *)us_p; TextUndoStep *us = (TextUndoStep *)us_p;
Text *text = CTX_data_edit_text(C); Text *text = CTX_data_edit_text(C);
/* No undo data was generated. Hint, use global undo here. */ int buf_strlen = 0;
if ((us->data.pos == -1) || (us->data.buf == NULL)) {
return false; uchar *buf = (uchar *)txt_to_buf_fast(text, &buf_strlen);
#ifdef USE_ARRAY_STORE
if (um_arraystore.bs == NULL) {
um_arraystore.bs = BLI_array_store_create(1, ARRAY_CHUNK_SIZE);
}
um_arraystore.users += 1;
const size_t total_size_prev = BLI_array_store_calc_size_compacted_get(um_arraystore.bs);
us->data.state = BLI_array_store_state_add(um_arraystore.bs, buf, buf_strlen, NULL);
MEM_freeN(buf);
#else
us->data.buf = buf;
us->data.buf_strlen = buf_strlen;
#endif
us->cursor.line = txt_get_span(text->lines.first, text->curl);
us->cursor.column = text->curc;
if (txt_has_sel(text)) {
us->cursor.line_select = (text->curl == text->sell) ?
us->cursor.line :
txt_get_span(text->lines.first, text->sell);
us->cursor.column_select = text->selc;
}
else {
us->cursor.line_select = us->cursor.line;
us->cursor.column_select = us->cursor.column;
} }
us_p->is_applied = true; us_p->is_applied = true;
us->text_ref.ptr = text; us->text_ref.ptr = text;
us->step.data_size = us->data.len; #ifdef USE_ARRAY_STORE
us->step.data_size = BLI_array_store_calc_size_compacted_get(um_arraystore.bs) - total_size_prev;
#else
us->step.data_size = us->data.buf_strlen;
#endif
return true; return true;
} }
static void text_undosys_step_decode_undo_impl(Text *text, TextUndoStep *us) static void text_undosys_step_decode(struct bContext *C,
{ struct Main *UNUSED(bmain),
BLI_assert(us->step.is_applied == true); UndoStep *us_p,
TextUndoBuf data = us->data; int UNUSED(dir),
while (data.pos > -1) { bool UNUSED(is_final))
txt_do_undo(text, &data);
}
BLI_assert(data.pos == -1);
us->step.is_applied = false;
}
static void text_undosys_step_decode_redo_impl(Text *text, TextUndoStep *us)
{
BLI_assert(us->step.is_applied == false);
TextUndoBuf data = us->data;
data.pos = -1;
while (data.pos < us->data.pos) {
txt_do_redo(text, &data);
}
BLI_assert(data.pos == us->data.pos);
us->step.is_applied = true;
}
static void text_undosys_step_decode_undo(TextUndoStep *us, bool is_final)
{
TextUndoStep *us_iter = us;
while (us_iter->step.next && (us_iter->step.next->type == us_iter->step.type)) {
if (us_iter->step.next->is_applied == false) {
break;
}
us_iter = (TextUndoStep *)us_iter->step.next;
}
Text *text_prev = NULL;
while ((us_iter != us) || (is_final && us_iter == us)) {
Text *text = us_iter->text_ref.ptr;
text_undosys_step_decode_undo_impl(text, us_iter);
if (text_prev != text) {
text_update_edited(text);
text_prev = text;
}
if (is_final) {
break;
}
us_iter = (TextUndoStep *)us_iter->step.prev;
}
}
static void text_undosys_step_decode_redo(TextUndoStep *us)
{
TextUndoStep *us_iter = us;
while (us_iter->step.prev && (us_iter->step.prev->type == us_iter->step.type)) {
if (us_iter->step.prev->is_applied == true) {
break;
}
us_iter = (TextUndoStep *)us_iter->step.prev;
}
Text *text_prev = NULL;
while (us_iter && (us_iter->step.is_applied == false)) {
Text *text = us_iter->text_ref.ptr;
text_undosys_step_decode_redo_impl(text, us_iter);
if (text_prev != text) {
text_update_edited(text);
text_prev = text;
}
if (us_iter == us) {
break;
}
us_iter = (TextUndoStep *)us_iter->step.next;
}
}
static void text_undosys_step_decode(
struct bContext *C, struct Main *UNUSED(bmain), UndoStep *us_p, int dir, bool is_final)
{ {
TextUndoStep *us = (TextUndoStep *)us_p; TextUndoStep *us = (TextUndoStep *)us_p;
Text *text = us->text_ref.ptr;
if (dir < 0) { #ifdef USE_ARRAY_STORE
text_undosys_step_decode_undo(us, is_final); size_t buf_strlen;
} const uchar *buf = (const uchar *)BLI_array_store_state_data_get_alloc(us->data.state,
else { &buf_strlen);
text_undosys_step_decode_redo(us); #else
const uchar *buf = us->data.buf;
const size_t buf_strlen = us->data.buf_strlen;
#endif
txt_from_buf_fast(text, (const char *)buf, buf_strlen);
#ifdef USE_ARRAY_STORE
MEM_freeN((void *)buf);
#endif
const bool has_select = ((us->cursor.line != us->cursor.line_select) ||
(us->cursor.column != us->cursor.column_select));
if (has_select) {
txt_move_to(text, us->cursor.line_select, us->cursor.column_select, 0);
brechtUnsubmitted
Done
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0 -> false

brecht: 0 -> false
} }
txt_move_to(text, us->cursor.line, us->cursor.column, has_select);
Text *text = us->text_ref.ptr;
SpaceText *st = CTX_wm_space_text(C); SpaceText *st = CTX_wm_space_text(C);
if (st) { if (st) {
/* Not essential, always show text being undo where possible. */ /* Not essential, always show text being undo where possible. */
st->text = text; st->text = text;
} }
text_update_cursor_moved(C); text_update_cursor_moved(C);
text_drawcache_tag_update(st, 1); text_drawcache_tag_update(st, 1);
WM_event_add_notifier(C, NC_TEXT | NA_EDITED, text); WM_event_add_notifier(C, NC_TEXT | NA_EDITED, text);
} }
static void text_undosys_step_free(UndoStep *us_p) static void text_undosys_step_free(UndoStep *us_p)
{ {
TextUndoStep *us = (TextUndoStep *)us_p; TextUndoStep *us = (TextUndoStep *)us_p;
MEM_SAFE_FREE(us->data.buf);
#ifdef USE_ARRAY_STORE
BLI_array_store_state_remove(um_arraystore.bs, us->data.state);
um_arraystore.users -= 1;
if (um_arraystore.users == 0) {
BLI_array_store_destroy(um_arraystore.bs);
um_arraystore.bs = NULL;
}
#endif
brechtUnsubmitted
Done
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The non-array store case is leaking memory here.

brecht: The non-array store case is leaking memory here.
} }
static void text_undosys_foreach_ID_ref(UndoStep *us_p, static void text_undosys_foreach_ID_ref(UndoStep *us_p,
UndoTypeForEachIDRefFn foreach_ID_ref_fn, UndoTypeForEachIDRefFn foreach_ID_ref_fn,
void *user_data) void *user_data)
{ {
TextUndoStep *us = (TextUndoStep *)us_p; TextUndoStep *us = (TextUndoStep *)us_p;
foreach_ID_ref_fn(user_data, ((UndoRefID *)&us->text_ref)); foreach_ID_ref_fn(user_data, ((UndoRefID *)&us->text_ref));
Show All 19 Lines
/** \} */ /** \} */
/* -------------------------------------------------------------------- */ /* -------------------------------------------------------------------- */
/** \name Utilities /** \name Utilities
* \{ */ * \{ */
/* Use operator system to finish the undo step. */ /* Use operator system to finish the undo step. */
TextUndoBuf *ED_text_undo_push_init(bContext *C) UndoStep *ED_text_undo_push_init(bContext *C)
{ {
UndoStack *ustack = ED_undo_stack_get(); UndoStack *ustack = ED_undo_stack_get();
UndoStep *us_p = BKE_undosys_step_push_init_with_type(ustack, C, NULL, BKE_UNDOSYS_TYPE_TEXT); UndoStep *us_p = BKE_undosys_step_push_init_with_type(ustack, C, NULL, BKE_UNDOSYS_TYPE_TEXT);
TextUndoStep *us = (TextUndoStep *)us_p; return us_p;
return &us->data;
} }
/** \} */ /** \} */