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blender-archive/source/blender/editors/space_node/node_intern.h
Pablo Vazquez 4db4a97355 Node Editor: Style update to nodes 
This patch changes how nodes look visually, in an attempt to fix a number of issues:
* The header background is currently drawn using a theme color fully opaque, this limits the colors we can use because the node name/label is drawn on top.
* Hard-coded transparency makes nodes hard to read. The node backdrop already has alpha so if the user wants it they can set it. This patch uses alpha from the theme.
* Better muted status indicator, instead of simply making everything transparent and the wires inside red, draw a red outline around the node, darken the header and backdrop.
* On muted nodes, display wires behind the backdrop to not interfere with text/widgets inside the node.

Nodes:

* Darken header to improve readability of node label.
* Draw a line under the header
* Thicker outline.
* Do not hard-code transparency on nodes, use the theme's node backdrop alpha component.
* Use angle icon instead of triangle (to be consistent with the [[ https://developer.blender.org/D12814 | changes ]] to panels)

Style adjustment to sockets drawing:

* Do not hard-code the socket outline color to black, use `TH_WIRE` instead
* Do not use `TH_TEXT_HI` for selected sockets, use `TH_ACTIVE` (active node outline)
* Do not draw sockets background transparent on muted nodes.
* Thicker outline to help contrast and readability

{F11496707, size=full}

Reviewed By: #user_interface, HooglyBoogly

Differential Revision: https://developer.blender.org/D12884
2021-10-26 20:19:24 +02:00

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/*
* 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.
*
* The Original Code is Copyright (C) 2008 Blender Foundation.
* All rights reserved.
*/
/** \file
* \ingroup spnode
*/
#pragma once
#include "BKE_node.h"
#include "UI_interface.h"
#include "UI_view2d.h"
#include <stddef.h> /* for size_t */
/* internal exports only */
struct ARegion;
struct ARegionType;
struct Main;
struct NodeInsertOfsData;
struct View2D;
struct bContext;
struct bNode;
struct bNodeLink;
struct bNodeSocket;
struct wmGizmoGroupType;
struct wmKeyConfig;
struct wmWindow;
#ifdef __cplusplus
extern "C" {
#endif
/* temp data to pass on to modal */
typedef struct bNodeLinkDrag {
struct bNodeLinkDrag *next, *prev;
/* List of links dragged by the operator.
* NOTE: This is a list of LinkData structs on top of the actual bNodeLinks.
* This way the links can be added to the node tree while being stored in this list.
*/
ListBase links;
bool from_multi_input_socket;
int in_out;
/** Temporarily stores the last picked link from multi-input socket operator. */
struct bNodeLink *last_picked_multi_input_socket_link;
/** Temporarily stores the last hovered socket for multi-input socket operator.
* Store it to recalculate sorting after it is no longer hovered. */
struct bNode *last_node_hovered_while_dragging_a_link;
/* Data for edge panning */
View2DEdgePanData pan_data;
} bNodeLinkDrag;
typedef struct SpaceNode_Runtime {
float aspect;
/** Mouse position for drawing socket-less links and adding nodes. */
float cursor[2];
/** For auto compositing. */
bool recalc;
/** Temporary data for modal linking operator. */
struct ListBase linkdrag;
/* XXX hack for translate_attach op-macros to pass data from transform op to insert_offset op */
/** Temporary data for node insert offset (in UI called Auto-offset). */
struct NodeInsertOfsData *iofsd;
} SpaceNode_Runtime;
/* space_node.c */
/* transform between View2Ds in the tree path */
void space_node_group_offset(struct SpaceNode *snode, float *x, float *y);
/* node_draw.cc */
float node_socket_calculate_height(const bNodeSocket *socket);
void node_link_calculate_multi_input_position(const float socket_x,
const float socket_y,
const int index,
const int total_inputs,
float r[2]);
int node_get_colorid(struct bNode *node);
int node_get_resize_cursor(int directions);
void node_draw_shadow(const struct SpaceNode *snode,
const struct bNode *node,
float radius,
float alpha);
void node_draw_default(const struct bContext *C,
struct ARegion *region,
struct SpaceNode *snode,
struct bNodeTree *ntree,
struct bNode *node,
bNodeInstanceKey key);
void node_draw_sockets(const struct View2D *v2d,
const struct bContext *C,
struct bNodeTree *ntree,
struct bNode *node,
bool draw_outputs,
bool select_all);
void node_update_default(const struct bContext *C, struct bNodeTree *ntree, struct bNode *node);
int node_select_area_default(struct bNode *node, int x, int y);
int node_tweak_area_default(struct bNode *node, int x, int y);
void node_socket_color_get(struct bContext *C,
struct bNodeTree *ntree,
struct PointerRNA *node_ptr,
struct bNodeSocket *sock,
float r_color[4]);
void node_update_nodetree(const struct bContext *C, struct bNodeTree *ntree);
void node_draw_nodetree(const struct bContext *C,
struct ARegion *region,
struct SpaceNode *snode,
struct bNodeTree *ntree,
bNodeInstanceKey parent_key);
void node_draw_space(const bContext *C, ARegion *region);
void node_set_cursor(struct wmWindow *win, struct SpaceNode *snode, float cursor[2]);
/* DPI scaled coords */
void node_to_view(const struct bNode *node, float x, float y, float *rx, float *ry);
void node_to_updated_rect(const struct bNode *node, rctf *r_rect);
void node_from_view(const struct bNode *node, float x, float y, float *rx, float *ry);
/* node_toolbar.c */
void node_toolbar_register(struct ARegionType *art);
/* node_ops.c */
void node_operatortypes(void);
void node_keymap(struct wmKeyConfig *keyconf);
/* node_select.c */
void node_deselect_all(struct SpaceNode *snode);
void node_socket_select(struct bNode *node, struct bNodeSocket *sock);
void node_socket_deselect(struct bNode *node, struct bNodeSocket *sock, const bool deselect_node);
void node_deselect_all_input_sockets(struct SpaceNode *snode, const bool deselect_nodes);
void node_deselect_all_output_sockets(struct SpaceNode *snode, const bool deselect_nodes);
void node_select_single(struct bContext *C, struct bNode *node);
void NODE_OT_select(struct wmOperatorType *ot);
void NODE_OT_select_all(struct wmOperatorType *ot);
void NODE_OT_select_linked_to(struct wmOperatorType *ot);
void NODE_OT_select_linked_from(struct wmOperatorType *ot);
void NODE_OT_select_box(struct wmOperatorType *ot);
void NODE_OT_select_circle(struct wmOperatorType *ot);
void NODE_OT_select_lasso(struct wmOperatorType *ot);
void NODE_OT_select_grouped(struct wmOperatorType *ot);
void NODE_OT_select_same_type_step(struct wmOperatorType *ot);
void NODE_OT_find_node(struct wmOperatorType *ot);
/* node_view.c */
int space_node_view_flag(struct bContext *C,
struct SpaceNode *snode,
ARegion *region,
const int node_flag,
const int smooth_viewtx);
void NODE_OT_view_all(struct wmOperatorType *ot);
void NODE_OT_view_selected(struct wmOperatorType *ot);
void NODE_OT_geometry_node_view_legacy(struct wmOperatorType *ot);
void NODE_OT_backimage_move(struct wmOperatorType *ot);
void NODE_OT_backimage_zoom(struct wmOperatorType *ot);
void NODE_OT_backimage_fit(struct wmOperatorType *ot);
void NODE_OT_backimage_sample(struct wmOperatorType *ot);
/* drawnode.c */
void nodelink_batch_start(struct SpaceNode *snode);
void nodelink_batch_end(struct SpaceNode *snode);
void node_draw_link(struct View2D *v2d, struct SpaceNode *snode, struct bNodeLink *link);
void node_draw_link_bezier(const struct View2D *v2d,
const struct SpaceNode *snode,
const struct bNodeLink *link,
int th_col1,
int th_col2,
int th_col3);
bool node_link_bezier_points(const struct View2D *v2d,
const struct SpaceNode *snode,
const struct bNodeLink *link,
float coord_array[][2],
const int resol);
bool node_link_bezier_handles(const struct View2D *v2d,
const struct SpaceNode *snode,
const struct bNodeLink *link,
float vec[4][2]);
void draw_nodespace_back_pix(const struct bContext *C,
struct ARegion *region,
struct SpaceNode *snode,
bNodeInstanceKey parent_key);
/* node_add.c */
bNode *node_add_node(
const struct bContext *C, const char *idname, int type, float locx, float locy);
void NODE_OT_add_reroute(struct wmOperatorType *ot);
void NODE_OT_add_group(struct wmOperatorType *ot);
void NODE_OT_add_object(struct wmOperatorType *ot);
void NODE_OT_add_collection(struct wmOperatorType *ot);
void NODE_OT_add_texture(struct wmOperatorType *ot);
void NODE_OT_add_file(struct wmOperatorType *ot);
void NODE_OT_add_mask(struct wmOperatorType *ot);
void NODE_OT_new_node_tree(struct wmOperatorType *ot);
/* node_group.c */
const char *node_group_idname(struct bContext *C);
void NODE_OT_group_make(struct wmOperatorType *ot);
void NODE_OT_group_insert(struct wmOperatorType *ot);
void NODE_OT_group_ungroup(struct wmOperatorType *ot);
void NODE_OT_group_separate(struct wmOperatorType *ot);
void NODE_OT_group_edit(struct wmOperatorType *ot);
/* node_relationships.c */
void sort_multi_input_socket_links(struct SpaceNode *snode,
struct bNode *node,
struct bNodeLink *drag_link,
float cursor[2]);
bool node_connected_to_output(struct Main *bmain, struct bNodeTree *ntree, struct bNode *node);
void NODE_OT_link(struct wmOperatorType *ot);
void NODE_OT_link_make(struct wmOperatorType *ot);
void NODE_OT_links_cut(struct wmOperatorType *ot);
void NODE_OT_links_detach(struct wmOperatorType *ot);
void NODE_OT_links_mute(struct wmOperatorType *ot);
void NODE_OT_parent_set(struct wmOperatorType *ot);
void NODE_OT_join(struct wmOperatorType *ot);
void NODE_OT_attach(struct wmOperatorType *ot);
void NODE_OT_detach(struct wmOperatorType *ot);
void NODE_OT_link_viewer(struct wmOperatorType *ot);
void NODE_OT_insert_offset(struct wmOperatorType *ot);
/* node_edit.c */
void snode_notify(struct bContext *C, struct SpaceNode *snode);
void snode_dag_update(struct bContext *C, struct SpaceNode *snode);
void snode_set_context(const struct bContext *C);
void snode_update(struct SpaceNode *snode, struct bNode *node);
bool composite_node_active(struct bContext *C);
bool composite_node_editable(struct bContext *C);
bool node_has_hidden_sockets(struct bNode *node);
void node_set_hidden_sockets(struct SpaceNode *snode, bNode *node, int set);
int node_render_changed_exec(bContext *, struct wmOperator *);
int node_find_indicated_socket(struct SpaceNode *snode,
struct bNode **nodep,
struct bNodeSocket **sockp,
const float cursor[2],
int in_out);
float node_link_dim_factor(const struct View2D *v2d, const struct bNodeLink *link);
bool node_link_is_hidden_or_dimmed(const struct View2D *v2d, const struct bNodeLink *link);
void NODE_OT_duplicate(struct wmOperatorType *ot);
void NODE_OT_delete(struct wmOperatorType *ot);
void NODE_OT_delete_reconnect(struct wmOperatorType *ot);
void NODE_OT_resize(struct wmOperatorType *ot);
void NODE_OT_mute_toggle(struct wmOperatorType *ot);
void NODE_OT_hide_toggle(struct wmOperatorType *ot);
void NODE_OT_hide_socket_toggle(struct wmOperatorType *ot);
void NODE_OT_preview_toggle(struct wmOperatorType *ot);
void NODE_OT_options_toggle(struct wmOperatorType *ot);
void NODE_OT_node_copy_color(struct wmOperatorType *ot);
void NODE_OT_read_viewlayers(struct wmOperatorType *ot);
void NODE_OT_render_changed(struct wmOperatorType *ot);
void NODE_OT_output_file_add_socket(struct wmOperatorType *ot);
void NODE_OT_output_file_remove_active_socket(struct wmOperatorType *ot);
void NODE_OT_output_file_move_active_socket(struct wmOperatorType *ot);
void NODE_OT_switch_view_update(struct wmOperatorType *ot);
/* NOTE: clipboard_cut is a simple macro of copy + delete. */
void NODE_OT_clipboard_copy(struct wmOperatorType *ot);
void NODE_OT_clipboard_paste(struct wmOperatorType *ot);
void NODE_OT_tree_socket_add(struct wmOperatorType *ot);
void NODE_OT_tree_socket_remove(struct wmOperatorType *ot);
void NODE_OT_tree_socket_change_type(struct wmOperatorType *ot);
void NODE_OT_tree_socket_move(struct wmOperatorType *ot);
void NODE_OT_shader_script_update(struct wmOperatorType *ot);
void NODE_OT_viewer_border(struct wmOperatorType *ot);
void NODE_OT_clear_viewer_border(struct wmOperatorType *ot);
/* node_widgets.c */
void NODE_GGT_backdrop_transform(struct wmGizmoGroupType *gzgt);
void NODE_GGT_backdrop_crop(struct wmGizmoGroupType *gzgt);
void NODE_GGT_backdrop_sun_beams(struct wmGizmoGroupType *gzgt);
void NODE_GGT_backdrop_corner_pin(struct wmGizmoGroupType *gzgt);
void NODE_OT_cryptomatte_layer_add(struct wmOperatorType *ot);
void NODE_OT_cryptomatte_layer_remove(struct wmOperatorType *ot);
/* node_geometry_attribute_search.cc */
void node_geometry_add_attribute_search_button(const struct bContext *C,
const struct bNodeTree *node_tree,
const struct bNode *node,
struct PointerRNA *socket_ptr,
struct uiLayout *layout);
extern const char *node_context_dir[];
/* XXXXXX */
/* Nodes draw without dpi - the view zoom is flexible. */
#define HIDDEN_RAD (0.75f * U.widget_unit)
#define BASIS_RAD (0.2f * U.widget_unit)
#define NODE_DYS (U.widget_unit / 2)
#define NODE_DY U.widget_unit
#define NODE_SOCKDY (0.1f * U.widget_unit)
#define NODE_WIDTH(node) (node->width * UI_DPI_FAC)
#define NODE_HEIGHT(node) (node->height * UI_DPI_FAC)
#define NODE_MARGIN_X (1.2f * U.widget_unit)
#define NODE_SOCKSIZE (0.25f * U.widget_unit)
#define NODE_MULTI_INPUT_LINK_GAP (0.25f * U.widget_unit)
#define NODE_RESIZE_MARGIN (0.20f * U.widget_unit)
#define NODE_LINK_RESOL 12
#ifdef __cplusplus
}
#endif
#ifdef __cplusplus
# include "BLI_vector.hh"
# include "UI_interface.hh"
namespace blender::ed::space_node {
Vector<ui::ContextPathItem> context_path_for_space_node(const bContext &C);
}
#endif
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