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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2009 Blender Foundation. All rights reserved. */
/** \file
* \ingroup edinterface
*
* Eyedropper (Animation Driver Targets).
*
* Defines:
* - #UI_OT_eyedropper_driver
*/
#include "MEM_guardedalloc.h"
#include "DNA_anim_types.h"
#include "DNA_object_types.h"
#include "DNA_screen_types.h"
#include "BKE_animsys.h"
#include "BKE_context.h"
#include "DEG_depsgraph.h"
#include "DEG_depsgraph_build.h"
#include "RNA_access.h"
#include "RNA_define.h"
#include "UI_interface.h"
#include "WM_api.h"
#include "WM_types.h"
#include "ED_keyframing.h"
#include "interface_eyedropper_intern.h"
#include "interface_intern.h"
typedef struct DriverDropper {
/* Destination property (i.e. where we'll add a driver) */
PointerRNA ptr;
PropertyRNA *prop;
int index;
bool is_undo;
/* TODO: new target? */
} DriverDropper;
static bool driverdropper_init(bContext *C, wmOperator *op)
{
DriverDropper *ddr = MEM_callocN(sizeof(DriverDropper), __func__);
uiBut *but = UI_context_active_but_prop_get(C, &ddr->ptr, &ddr->prop, &ddr->index);
if ((ddr->ptr.data == NULL) || (ddr->prop == NULL) ||
(RNA_property_editable(&ddr->ptr, ddr->prop) == false) ||
(RNA_property_animateable(&ddr->ptr, ddr->prop) == false) || (but->flag & UI_BUT_DRIVEN)) {
MEM_freeN(ddr);
return false;
}
op->customdata = ddr;
ddr->is_undo = UI_but_flag_is_set(but, UI_BUT_UNDO);
return true;
}
static void driverdropper_exit(bContext *C, wmOperator *op)
{
WM_cursor_modal_restore(CTX_wm_window(C));
MEM_SAFE_FREE(op->customdata);
}
static void driverdropper_sample(bContext *C, wmOperator *op, const wmEvent *event)
{
DriverDropper *ddr = (DriverDropper *)op->customdata;
uiBut *but = eyedropper_get_property_button_under_mouse(C, event);
const short mapping_type = RNA_enum_get(op->ptr, "mapping_type");
const short flag = 0;
/* we can only add a driver if we know what RNA property it corresponds to */
if (but == NULL) {
return;
}
/* Get paths for src... */
PointerRNA *target_ptr = &but->rnapoin;
PropertyRNA *target_prop = but->rnaprop;
const int target_index = but->rnaindex;
char *target_path = RNA_path_from_ID_to_property(target_ptr, target_prop);
/* ... and destination */
char *dst_path = RNA_path_from_ID_to_property(&ddr->ptr, ddr->prop);
/* Now create driver(s) */
if (target_path && dst_path) {
int success = ANIM_add_driver_with_target(op->reports,
ddr->ptr.owner_id,
dst_path,
ddr->index,
target_ptr->owner_id,
target_path,
target_index,
flag,
DRIVER_TYPE_PYTHON,
mapping_type);
if (success) {
/* send updates */
UI_context_update_anim_flag(C);
DEG_relations_tag_update(CTX_data_main(C));
DEG_id_tag_update(ddr->ptr.owner_id, ID_RECALC_TRANSFORM | ID_RECALC_GEOMETRY);
WM_event_add_notifier(C, NC_ANIMATION | ND_FCURVES_ORDER, NULL); /* XXX */
}
}
/* cleanup */
if (target_path) {
MEM_freeN(target_path);
}
if (dst_path) {
MEM_freeN(dst_path);
}
}
static void driverdropper_cancel(bContext *C, wmOperator *op)
{
driverdropper_exit(C, op);
}
/* main modal status check */
static int driverdropper_modal(bContext *C, wmOperator *op, const wmEvent *event)
{
DriverDropper *ddr = op->customdata;
/* handle modal keymap */
if (event->type == EVT_MODAL_MAP) {
switch (event->val) {
case EYE_MODAL_CANCEL: {
driverdropper_cancel(C, op);
return OPERATOR_CANCELLED;
}
case EYE_MODAL_SAMPLE_CONFIRM: {
const bool is_undo = ddr->is_undo;
driverdropper_sample(C, op, event);
driverdropper_exit(C, op);
/* Could support finished & undo-skip. */
return is_undo ? OPERATOR_FINISHED : OPERATOR_CANCELLED;
}
}
}
return OPERATOR_RUNNING_MODAL;
}
/* Modal Operator init */
static int driverdropper_invoke(bContext *C, wmOperator *op, const wmEvent *UNUSED(event))
{
/* init */
if (driverdropper_init(C, op)) {
wmWindow *win = CTX_wm_window(C);
/* Workaround for de-activating the button clearing the cursor, see T76794 */
UI_context_active_but_clear(C, win, CTX_wm_region(C));
WM_cursor_modal_set(win, WM_CURSOR_EYEDROPPER);
/* add temp handler */
WM_event_add_modal_handler(C, op);
return OPERATOR_RUNNING_MODAL;
}
return OPERATOR_CANCELLED;
}
/* Repeat operator */
static int driverdropper_exec(bContext *C, wmOperator *op)
{
/* init */
if (driverdropper_init(C, op)) {
/* cleanup */
driverdropper_exit(C, op);
return OPERATOR_FINISHED;
}
return OPERATOR_CANCELLED;
}
static bool driverdropper_poll(bContext *C)
{
if (!CTX_wm_window(C)) {
return false;
}
return true;
}
void UI_OT_eyedropper_driver(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Eyedropper Driver";
ot->idname = "UI_OT_eyedropper_driver";
ot->description = "Pick a property to use as a driver target";
/* api callbacks */
ot->invoke = driverdropper_invoke;
ot->modal = driverdropper_modal;
ot->cancel = driverdropper_cancel;
ot->exec = driverdropper_exec;
ot->poll = driverdropper_poll;
/* flags */
ot->flag = OPTYPE_UNDO | OPTYPE_BLOCKING | OPTYPE_INTERNAL;
/* properties */
RNA_def_enum(ot->srna,
"mapping_type",
prop_driver_create_mapping_types,
0,
"Mapping Type",
"Method used to match target and driven properties");
}
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