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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/** \file
* \ingroup edsculpt
*/
#include <string.h>
#include "MEM_guardedalloc.h"
#include "DNA_brush_types.h"
#include "DNA_space_types.h"
#include "BLI_array_utils.h"
#include "BKE_context.h"
#include "BKE_paint.h"
#include "BKE_undo_system.h"
#include "ED_paint.h"
#include "ED_undo.h"
#include "WM_api.h"
#include "WM_types.h"
#include "paint_intern.h"
/* -------------------------------------------------------------------- */
/** \name Undo Conversion
* \{ */
typedef struct UndoCurve {
PaintCurvePoint *points; /* points of curve */
int tot_points;
int add_index;
} UndoCurve;
static void undocurve_from_paintcurve(UndoCurve *uc, const PaintCurve *pc)
{
BLI_assert(BLI_array_is_zeroed(uc, 1));
uc->points = MEM_dupallocN(pc->points);
uc->tot_points = pc->tot_points;
uc->add_index = pc->add_index;
}
static void undocurve_to_paintcurve(const UndoCurve *uc, PaintCurve *pc)
{
MEM_SAFE_FREE(pc->points);
pc->points = MEM_dupallocN(uc->points);
pc->tot_points = uc->tot_points;
pc->add_index = uc->add_index;
}
static void undocurve_free_data(UndoCurve *uc)
{
MEM_SAFE_FREE(uc->points);
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Implements ED Undo System
* \{ */
typedef struct PaintCurveUndoStep {
UndoStep step;
PaintCurve *pc;
UndoCurve data;
} PaintCurveUndoStep;
static bool paintcurve_undosys_poll(bContext *C)
{
if (C == NULL || !paint_curve_poll(C)) {
return false;
}
Paint *p = BKE_paint_get_active_from_context(C);
return (p->brush && p->brush->paint_curve);
}
static void paintcurve_undosys_step_encode_init(struct bContext *C, UndoStep *us_p)
{
/* XXX, use to set the undo type only. */
UNUSED_VARS(C, us_p);
}
static bool paintcurve_undosys_step_encode(struct bContext *C,
struct Main *UNUSED(bmain),
UndoStep *us_p)
{
if (C == NULL || !paint_curve_poll(C)) {
return false;
}
Paint *p = BKE_paint_get_active_from_context(C);
PaintCurve *pc = p ? (p->brush ? p->brush->paint_curve : NULL) : NULL;
if (pc == NULL) {
return false;
}
PaintCurveUndoStep *us = (PaintCurveUndoStep *)us_p;
BLI_assert(us->step.data_size == 0);
us->pc = pc;
undocurve_from_paintcurve(&us->data, pc);
return true;
}
static void paintcurve_undosys_step_decode(struct bContext *UNUSED(C),
struct Main *UNUSED(bmain),
UndoStep *us_p,
int UNUSED(dir),
bool UNUSED(is_final))
{
PaintCurveUndoStep *us = (PaintCurveUndoStep *)us_p;
undocurve_to_paintcurve(&us->data, us->pc);
}
static void paintcurve_undosys_step_free(UndoStep *us_p)
{
PaintCurveUndoStep *us = (PaintCurveUndoStep *)us_p;
undocurve_free_data(&us->data);
}
/* Export for ED_undo_sys. */
void ED_paintcurve_undosys_type(UndoType *ut)
{
ut->name = "Paint Curve";
/* don't poll for now */
ut->poll = paintcurve_undosys_poll;
ut->step_encode_init = paintcurve_undosys_step_encode_init;
ut->step_encode = paintcurve_undosys_step_encode;
ut->step_decode = paintcurve_undosys_step_decode;
ut->step_free = paintcurve_undosys_step_free;
ut->use_context = false;
ut->step_size = sizeof(PaintCurveUndoStep);
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Utilities
* \{ */
void ED_paintcurve_undo_push_begin(const char *name)
{
UndoStack *ustack = ED_undo_stack_get();
bContext *C = NULL; /* special case, we never read from this. */
BKE_undosys_step_push_init_with_type(ustack, C, name, BKE_UNDOSYS_TYPE_PAINTCURVE);
}
void ED_paintcurve_undo_push_end(void)
{
UndoStack *ustack = ED_undo_stack_get();
BKE_undosys_step_push(ustack, NULL, NULL);
}
/** \} */
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