diff options
Diffstat (limited to 'source/blender/editors/space_node/node_widgets.c')
| -rw-r--r-- | source/blender/editors/space_node/node_widgets.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/source/blender/editors/space_node/node_widgets.c b/source/blender/editors/space_node/node_widgets.c new file mode 100644 index 00000000000..9e7445b8566 --- /dev/null +++ b/source/blender/editors/space_node/node_widgets.c @@ -0,0 +1,114 @@ +/* + * ***** 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_widgets.c + * \ingroup spnode + */ + +#include "BKE_context.h" +#include "BKE_image.h" + +#include "DNA_manipulator_types.h" + +#include "ED_screen.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(wgrouptype)) +{ + 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_init(const bContext *UNUSED(C), wmManipulatorGroup *wgroup) +{ + wmManipulatorWrapper *wwrapper = MEM_mallocN(sizeof(wmManipulatorWrapper), __func__); + + wwrapper->manipulator = MANIPULATOR_rect_transform_new( + wgroup, "backdrop_cage", + MANIPULATOR_RECT_TRANSFORM_STYLE_TRANSLATE | MANIPULATOR_RECT_TRANSFORM_STYLE_SCALE_UNIFORM); + wgroup->customdata = wwrapper; + +} + +static void WIDGETGROUP_node_transform_refresh(const bContext *C, wmManipulatorGroup *wgroup) +{ + wmManipulator *cage = ((wmManipulatorWrapper *)wgroup->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 w = (ibuf->x > 0) ? ibuf->x : 64.0f; + const float h = (ibuf->y > 0) ? ibuf->y : 64.0f; + + MANIPULATOR_rect_transform_set_dimensions(cage, w, h); + WM_manipulator_set_origin(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_set_property(cage, RECT_TRANSFORM_SLOT_OFFSET, &nodeptr, "backdrop_offset"); + WM_manipulator_set_property(cage, RECT_TRANSFORM_SLOT_SCALE, &nodeptr, "backdrop_zoom"); + } + 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->poll = WIDGETGROUP_node_transform_poll; + wgt->init = WIDGETGROUP_node_transform_init; + wgt->refresh = WIDGETGROUP_node_transform_refresh; +} |