Rename node_widgets -> node_manipulators

1 files changed, 116 insertions, 0 deletions

diff --git a/source/blender/editors/space_node/node_manipulators.c b/source/blender/editors/space_node/node_manipulators.c
new file mode 100644
index 00000000000..6eb03a6eb26
--- /dev/null
+++ b/source/blender/editors/space_node/node_manipulators.c
@@ -0,0 +1,116 @@
+/*
+ * ***** 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 "DNA_manipulator_types.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 = ED_manipulator_rect_transform_new(
+	        mgroup, "backdrop_cage",
+	        ED_MANIPULATOR_RECT_TRANSFORM_STYLE_TRANSLATE | ED_MANIPULATOR_RECT_TRANSFORM_STYLE_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 w = (ibuf->x > 0) ? ibuf->x : 64.0f;
+		const float h = (ibuf->y > 0) ? ibuf->y : 64.0f;
+
+		ED_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_def_property(cage, "offset", &nodeptr, "backdrop_offset", -1);
+		WM_manipulator_def_property(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->poll = WIDGETGROUP_node_transform_poll;
+	wgt->setup = WIDGETGROUP_node_transform_setup;
+	wgt->refresh = WIDGETGROUP_node_transform_refresh;
+}