Campbell Barton
830df9b33d
While this is work-in-progress from custom-manipulators branch its stable so adding into 2.8 so we don't get too much out of sync. - ManipulatorGroupType's are moved out of the manipulator-map and are now global (like operators, panels etc) and added into spaces as needed. Without this all operators that might ever use a manipulator in the 3D view would be polling the viewport. - Add optional get/set callbacks for non-RNA properties Needed so re-usable manipulators can control values that don't correspond to a single properly or need conversion. - Fix divide by zero bug in arrow manipulator (when moving zero pixels).
117 lines
3.5 KiB
C
117 lines
3.5 KiB
C
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file blender/editors/space_node/node_manipulators.c
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* \ingroup spnode
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*/
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#include "BKE_context.h"
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#include "BKE_image.h"
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#include "ED_screen.h"
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#include "ED_manipulator_library.h"
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#include "IMB_imbuf_types.h"
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#include "MEM_guardedalloc.h"
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#include "RNA_access.h"
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#include "WM_api.h"
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#include "WM_types.h"
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#include "node_intern.h"
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static bool WIDGETGROUP_node_transform_poll(const bContext *C, wmManipulatorGroupType *UNUSED(wgt))
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{
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SpaceNode *snode = CTX_wm_space_node(C);
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if ((snode->flag & SNODE_BACKDRAW) == 0) {
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return false;
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}
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if (snode && snode->edittree && snode->edittree->type == NTREE_COMPOSIT) {
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bNode *node = nodeGetActive(snode->edittree);
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if (node && node->type == CMP_NODE_VIEWER) {
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return true;
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}
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}
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return false;
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}
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static void WIDGETGROUP_node_transform_setup(const bContext *UNUSED(C), wmManipulatorGroup *mgroup)
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{
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wmManipulatorWrapper *wwrapper = MEM_mallocN(sizeof(wmManipulatorWrapper), __func__);
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wwrapper->manipulator = ED_manipulator_rect_transform_new(
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mgroup, "backdrop_cage",
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ED_MANIPULATOR_RECT_TRANSFORM_STYLE_TRANSLATE | ED_MANIPULATOR_RECT_TRANSFORM_STYLE_SCALE_UNIFORM);
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mgroup->customdata = wwrapper;
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}
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static void WIDGETGROUP_node_transform_refresh(const bContext *C, wmManipulatorGroup *mgroup)
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{
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wmManipulator *cage = ((wmManipulatorWrapper *)mgroup->customdata)->manipulator;
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const ARegion *ar = CTX_wm_region(C);
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/* center is always at the origin */
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const float origin[3] = {ar->winx / 2, ar->winy / 2};
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void *lock;
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Image *ima = BKE_image_verify_viewer(IMA_TYPE_COMPOSITE, "Viewer Node");
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ImBuf *ibuf = BKE_image_acquire_ibuf(ima, NULL, &lock);
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if (ibuf) {
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const float w = (ibuf->x > 0) ? ibuf->x : 64.0f;
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const float h = (ibuf->y > 0) ? ibuf->y : 64.0f;
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ED_manipulator_rect_transform_set_dimensions(cage, w, h);
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WM_manipulator_set_origin(cage, origin);
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WM_manipulator_set_flag(cage, WM_MANIPULATOR_HIDDEN, false);
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/* need to set property here for undo. TODO would prefer to do this in _init */
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SpaceNode *snode = CTX_wm_space_node(C);
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PointerRNA nodeptr;
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RNA_pointer_create(snode->id, &RNA_SpaceNodeEditor, snode, &nodeptr);
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WM_manipulator_property_def_rna(cage, "offset", &nodeptr, "backdrop_offset", -1);
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WM_manipulator_property_def_rna(cage, "scale", &nodeptr, "backdrop_zoom", -1);
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}
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else {
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WM_manipulator_set_flag(cage, WM_MANIPULATOR_HIDDEN, true);
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}
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BKE_image_release_ibuf(ima, ibuf, lock);
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}
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void NODE_WGT_backdrop_transform(wmManipulatorGroupType *wgt)
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{
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wgt->name = "Backdrop Transform Widgets";
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wgt->idname = "NODE_WGT_backdrop_transform";
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wgt->flag |= WM_MANIPULATORGROUPTYPE_PERSISTENT;
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wgt->poll = WIDGETGROUP_node_transform_poll;
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wgt->setup = WIDGETGROUP_node_transform_setup;
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wgt->refresh = WIDGETGROUP_node_transform_refresh;
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}
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