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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/editors/space_node/node_manipulators.c
* \ingroup spnode
*/
#include "BKE_context.h"
#include "BKE_image.h"
#include "ED_screen.h"
#include "ED_manipulator_library.h"
#include "IMB_imbuf_types.h"
#include "MEM_guardedalloc.h"
#include "RNA_access.h"
#include "WM_api.h"
#include "WM_types.h"
#include "node_intern.h"
static bool WIDGETGROUP_node_transform_poll(const bContext *C, wmManipulatorGroupType *UNUSED(wgt))
{
SpaceNode *snode = CTX_wm_space_node(C);
if ((snode->flag & SNODE_BACKDRAW) == 0) {
return false;
}
if (snode && snode->edittree && snode->edittree->type == NTREE_COMPOSIT) {
bNode *node = nodeGetActive(snode->edittree);
if (node && node->type == CMP_NODE_VIEWER) {
return true;
}
}
return false;
}
static void WIDGETGROUP_node_transform_setup(const bContext *UNUSED(C), wmManipulatorGroup *mgroup)
{
wmManipulatorWrapper *wwrapper = MEM_mallocN(sizeof(wmManipulatorWrapper), __func__);
wwrapper->manipulator = WM_manipulator_new("MANIPULATOR_WT_cage_2d", mgroup, "backdrop_cage", NULL);
RNA_enum_set(wwrapper->manipulator->ptr, "transform",
ED_MANIPULATOR_RECT_TRANSFORM_FLAG_TRANSLATE | ED_MANIPULATOR_RECT_TRANSFORM_FLAG_SCALE_UNIFORM);
mgroup->customdata = wwrapper;
}
static void WIDGETGROUP_node_transform_refresh(const bContext *C, wmManipulatorGroup *mgroup)
{
wmManipulator *cage = ((wmManipulatorWrapper *)mgroup->customdata)->manipulator;
const ARegion *ar = CTX_wm_region(C);
/* center is always at the origin */
const float origin[3] = {ar->winx / 2, ar->winy / 2};
void *lock;
Image *ima = BKE_image_verify_viewer(IMA_TYPE_COMPOSITE, "Viewer Node");
ImBuf *ibuf = BKE_image_acquire_ibuf(ima, NULL, &lock);
if (ibuf) {
const float dims[2] = {
(ibuf->x > 0) ? ibuf->x : 64.0f,
(ibuf->y > 0) ? ibuf->y : 64.0f,
};
RNA_float_set_array(cage->ptr, "dimensions", dims);
WM_manipulator_set_matrix_location(cage, origin);
WM_manipulator_set_flag(cage, WM_MANIPULATOR_HIDDEN, false);
/* need to set property here for undo. TODO would prefer to do this in _init */
SpaceNode *snode = CTX_wm_space_node(C);
PointerRNA nodeptr;
RNA_pointer_create(snode->id, &RNA_SpaceNodeEditor, snode, &nodeptr);
WM_manipulator_target_property_def_rna(cage, "offset", &nodeptr, "backdrop_offset", -1);
WM_manipulator_target_property_def_rna(cage, "scale", &nodeptr, "backdrop_zoom", -1);
}
else {
WM_manipulator_set_flag(cage, WM_MANIPULATOR_HIDDEN, true);
}
BKE_image_release_ibuf(ima, ibuf, lock);
}
void NODE_WGT_backdrop_transform(wmManipulatorGroupType *wgt)
{
wgt->name = "Backdrop Transform Widgets";
wgt->idname = "NODE_WGT_backdrop_transform";
wgt->flag |= WM_MANIPULATORGROUPTYPE_PERSISTENT;
wgt->poll = WIDGETGROUP_node_transform_poll;
wgt->setup = WIDGETGROUP_node_transform_setup;
wgt->refresh = WIDGETGROUP_node_transform_refresh;
}
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