text: /*
   * 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) 2001-2002 by NaN Holding BV.
   * All rights reserved.
   */
  
  /** \file
   * \ingroup edinterface
   */
  
  #include <math.h>
  #include <stdlib.h>
  #include <string.h>
  
  #include "MEM_guardedalloc.h"
  
  #include "DNA_screen_types.h"
  #include "DNA_space_types.h"
  #include "DNA_userdef_types.h"
  
  #include "BLI_blenlib.h"
  #include "BLI_utildefines.h"
  #include "BLI_math.h"
  
  #include "BKE_addon.h"
  #include "BKE_appdir.h"
  #include "BKE_main.h"
  #include "BKE_mesh_runtime.h"
  
  #include "BLO_readfile.h" /* for UserDef version patching. */
  
  #include "BLF_api.h"
  
  #include "ED_screen.h"
  
  #include "UI_interface.h"
  #include "UI_interface_icons.h"
  
  #include "interface_intern.h"
  #include "GPU_framebuffer.h"
  
  /* global for themes */
  typedef void (*VectorDrawFunc)(int x, int y, int w, int h, float alpha);
  
  /* be sure to keep 'bThemeState' in sync */
  static struct bThemeState g_theme_state = {
      NULL,
      SPACE_VIEW3D,
      RGN_TYPE_WINDOW,
  };
  
  #define theme_active g_theme_state.theme
  #define theme_spacetype g_theme_state.spacetype
  #define theme_regionid g_theme_state.regionid
  
  void ui_resources_init(void)
  {
    UI_icons_init();
  }
  
  void ui_resources_free(void)
  {
    UI_icons_free();
  }
  
  /* ******************************************************** */
  /*    THEMES */
  /* ******************************************************** */
  
  const uchar *UI_ThemeGetColorPtr(bTheme *btheme, int spacetype, int colorid)
  {
    ThemeSpace *ts = NULL;
    static uchar error[4] = {240, 0, 240, 255};
    static uchar alert[4] = {240, 60, 60, 255};
    static uchar headerdesel[4] = {0, 0, 0, 255};
    static uchar back[4] = {0, 0, 0, 255};
    static uchar setting = 0;
    const uchar *cp = error;
  
    /* ensure we're not getting a color after running BKE_blender_userdef_free */
    BLI_assert(BLI_findindex(&U.themes, theme_active) != -1);
    BLI_assert(colorid != TH_UNDEFINED);
  
    if (btheme) {
  
      /* first check for ui buttons theme */
      if (colorid < TH_THEMEUI) {
  
        switch (colorid) {
  
          case TH_REDALERT:
            cp = alert;
            break;
        }
      }
      else {
  
        switch (spacetype) {
          case SPACE_PROPERTIES:
            ts = &btheme->space_properties;
            break;
          case SPACE_VIEW3D:
            ts = &btheme->space_view3d;
            break;
          case SPACE_GRAPH:
            ts = &btheme->space_graph;
            break;
          case SPACE_FILE:
            ts = &btheme->space_file;
            break;
          case SPACE_NLA:
            ts = &btheme->space_nla;
            break;
          case SPACE_ACTION:
            ts = &btheme->space_action;
            break;
          case SPACE_SEQ:
            ts = &btheme->space_sequencer;
            break;
          case SPACE_IMAGE:
            ts = &btheme->space_image;
            break;
          case SPACE_TEXT:
            ts = &btheme->space_text;
            break;
          case SPACE_OUTLINER:
            ts = &btheme->space_outliner;
            break;
          case SPACE_INFO:
            ts = &btheme->space_info;
            break;
          case SPACE_USERPREF:
            ts = &btheme->space_preferences;
            break;
          case SPACE_CONSOLE:
            ts = &btheme->space_console;
            break;
          case SPACE_NODE:
            ts = &btheme->space_node;
            break;
          case SPACE_CLIP:
            ts = &btheme->space_clip;
            break;
          case SPACE_TOPBAR:
            ts = &btheme->space_topbar;
            break;
          case SPACE_STATUSBAR:
            ts = &btheme->space_statusbar;
            break;
          default:
            ts = &btheme->space_view3d;
            break;
        }
  
        switch (colorid) {
          case TH_BACK:
            if (ELEM(theme_regionid, RGN_TYPE_WINDOW, RGN_TYPE_PREVIEW)) {
              cp = ts->back;
            }
            else if (theme_regionid == RGN_TYPE_CHANNELS) {
              cp = ts->list;
            }
            else if (ELEM(theme_regionid, RGN_TYPE_HEADER, RGN_TYPE_FOOTER)) {
              cp = ts->header;
            }
            else if (theme_regionid == RGN_TYPE_NAV_BAR) {
              cp = ts->navigation_bar;
            }
            else if (theme_regionid == RGN_TYPE_EXECUTE) {
              cp = ts->execution_buts;
            }
            else {
              cp = ts->button;
            }
  
            copy_v4_v4_uchar(back, cp);
            if (!ED_region_is_overlap(spacetype, theme_regionid)) {
              back[3] = 255;
            }
            cp = back;
            break;
          case TH_BACK_GRAD:
            cp = ts->back_grad;
            break;
  
          case TH_BACKGROUND_TYPE:
            cp = &setting;
            setting = ts->background_type;
            break;
          case TH_TEXT:
            if (theme_regionid == RGN_TYPE_WINDOW) {
              cp = ts->text;
            }
            else if (theme_regionid == RGN_TYPE_CHANNELS) {
              cp = ts->list_text;
            }
            else if (ELEM(theme_regionid, RGN_TYPE_HEADER, RGN_TYPE_FOOTER)) {
              cp = ts->header_text;
            }
            else {
              cp = ts->button_text;
            }
            break;
          case TH_TEXT_HI:
            if (theme_regionid == RGN_TYPE_WINDOW) {
              cp = ts->text_hi;
            }
            else if (theme_regionid == RGN_TYPE_CHANNELS) {
              cp = ts->list_text_hi;
            }
            else if (ELEM(theme_regionid, RGN_TYPE_HEADER, RGN_TYPE_FOOTER)) {
              cp = ts->header_text_hi;
            }
            else {
              cp = ts->button_text_hi;
            }
            break;
          case TH_TITLE:
            if (theme_regionid == RGN_TYPE_WINDOW) {
              cp = ts->title;
            }
            else if (theme_regionid == RGN_TYPE_CHANNELS) {
              cp = ts->list_title;
            }
            else if (ELEM(theme_regionid, RGN_TYPE_HEADER, RGN_TYPE_FOOTER)) {
              cp = ts->header_title;
            }
            else {
              cp = ts->button_title;
            }
            break;
  
          case TH_HEADER:
            cp = ts->header;
            break;
          case TH_HEADERDESEL:
            /* We calculate a dynamic builtin header deselect color, also for pull-downs. */
            cp = ts->header;
            headerdesel[0] = cp[0] > 10 ? cp[0] - 10 : 0;
            headerdesel[1] = cp[1] > 10 ? cp[1] - 10 : 0;
            headerdesel[2] = cp[2] > 10 ? cp[2] - 10 : 0;
            headerdesel[3] = cp[3];
            cp = headerdesel;
            break;
          case TH_HEADER_TEXT:
            cp = ts->header_text;
            break;
          case TH_HEADER_TEXT_HI:
            cp = ts->header_text_hi;
            break;
  
          case TH_PANEL_HEADER:
            cp = ts->panelcolors.header;
            break;
          case TH_PANEL_BACK:
            cp = ts->panelcolors.back;
            break;
          case TH_PANEL_SUB_BACK:
            cp = ts->panelcolors.sub_back;
            break;
  
          case TH_BUTBACK:
            cp = ts->button;
            break;
          case TH_BUTBACK_TEXT:
            cp = ts->button_text;
            break;
          case TH_BUTBACK_TEXT_HI:
            cp = ts->button_text_hi;
            break;
  
          case TH_TAB_ACTIVE:
            cp = ts->tab_active;
            break;
          case TH_TAB_INACTIVE:
            cp = ts->tab_inactive;
            break;
          case TH_TAB_BACK:
            cp = ts->tab_back;
            break;
          case TH_TAB_OUTLINE:
            cp = ts->tab_outline;
            break;
  
          case TH_SHADE1:
            cp = ts->shade1;
            break;
          case TH_SHADE2:
            cp = ts->shade2;
            break;
          case TH_HILITE:
            cp = ts->hilite;
            break;
  
          case TH_GRID:
            cp = ts->grid;
            break;
          case TH_TIME_SCRUB_BACKGROUND:
            cp = ts->time_scrub_background;
            break;
          case TH_TIME_MARKER_LINE:
            cp = ts->time_marker_line;
            break;
          case TH_TIME_MARKER_LINE_SELECTED:
            cp = ts->time_marker_line_selected;
            break;
          case TH_VIEW_OVERLAY:
            cp = ts->view_overlay;
            break;
          case TH_WIRE:
            cp = ts->wire;
            break;
          case TH_WIRE_INNER:
            cp = ts->syntaxr;
            break;
          case TH_WIRE_EDIT:
            cp = ts->wire_edit;
            break;
          case TH_LIGHT:
            cp = ts->lamp;
            break;
          case TH_SPEAKER:
            cp = ts->speaker;
            break;
          case TH_CAMERA:
            cp = ts->camera;
            break;
          case TH_EMPTY:
            cp = ts->empty;
            break;
          case TH_SELECT:
            cp = ts->select;
            break;
          case TH_ACTIVE:
            cp = ts->active;
            break;
          case TH_GROUP:
            cp = ts->group;
            break;
          case TH_GROUP_ACTIVE:
            cp = ts->group_active;
            break;
          case TH_TRANSFORM:
            cp = ts->transform;
            break;
          case TH_VERTEX:
            cp = ts->vertex;
            break;
          case TH_VERTEX_SELECT:
            cp = ts->vertex_select;
            break;
          case TH_VERTEX_BEVEL:
            cp = ts->vertex_bevel;
            break;
          case TH_VERTEX_UNREFERENCED:
            cp = ts->vertex_unreferenced;
            break;
          case TH_VERTEX_SIZE:
            cp = &ts->vertex_size;
            break;
          case TH_OUTLINE_WIDTH:
            cp = &ts->outline_width;
            break;
          case TH_OBCENTER_DIA:
            cp = &ts->obcenter_dia;
            break;
          case TH_EDGE:
            cp = ts->edge;
            break;
          case TH_EDGE_SELECT:
            cp = ts->edge_select;
            break;
          case TH_EDGE_SEAM:
            cp = ts->edge_seam;
            break;
          case TH_EDGE_SHARP:
            cp = ts->edge_sharp;
            break;
          case TH_EDGE_CREASE:
            cp = ts->edge_crease;
            break;
          case TH_EDGE_BEVEL:
            cp = ts->edge_bevel;
            break;
          case TH_EDITMESH_ACTIVE:
            cp = ts->editmesh_active;
            break;
          case TH_EDGE_FACESEL:
            cp = ts->edge_facesel;
            break;
          case TH_FACE:
            cp = ts->face;
            break;
          case TH_FACE_SELECT:
            cp = ts->face_select;
            break;
          case TH_FACE_BACK:
            cp = ts->face_back;
            break;
          case TH_FACE_FRONT:
            cp = ts->face_front;
            break;
          case TH_FACE_DOT:
            cp = ts->face_dot;
            break;
          case TH_FACEDOT_SIZE:
            cp = &ts->facedot_size;
            break;
          case TH_DRAWEXTRA_EDGELEN:
            cp = ts->extra_edge_len;
            break;
          case TH_DRAWEXTRA_EDGEANG:
            cp = ts->extra_edge_angle;
            break;
          case TH_DRAWEXTRA_FACEAREA:
            cp = ts->extra_face_area;
            break;
          case TH_DRAWEXTRA_FACEANG:
            cp = ts->extra_face_angle;
            break;
          case TH_NORMAL:
            cp = ts->normal;
            break;
          case TH_VNORMAL:
            cp = ts->vertex_normal;
            break;
          case TH_LNORMAL:
            cp = ts->loop_normal;
            break;
          case TH_BONE_SOLID:
            cp = ts->bone_solid;
            break;
          case TH_BONE_POSE:
            cp = ts->bone_pose;
            break;
          case TH_BONE_POSE_ACTIVE:
            cp = ts->bone_pose_active;
            break;
          case TH_BONE_LOCKED_WEIGHT:
            cp = ts->bone_locked_weight;
            break;
          case TH_STRIP:
            cp = ts->strip;
            break;
          case TH_STRIP_SELECT:
            cp = ts->strip_select;
            break;
          case TH_KEYTYPE_KEYFRAME:
            cp = ts->keytype_keyframe;
            break;
          case TH_KEYTYPE_KEYFRAME_SELECT:
            cp = ts->keytype_keyframe_select;
            break;
          case TH_KEYTYPE_EXTREME:
            cp = ts->keytype_extreme;
            break;
          case TH_KEYTYPE_EXTREME_SELECT:
            cp = ts->keytype_extreme_select;
            break;
          case TH_KEYTYPE_BREAKDOWN:
            cp = ts->keytype_breakdown;
            break;
          case TH_KEYTYPE_BREAKDOWN_SELECT:
            cp = ts->keytype_breakdown_select;
            break;
          case TH_KEYTYPE_JITTER:
            cp = ts->keytype_jitter;
            break;
          case TH_KEYTYPE_JITTER_SELECT:
            cp = ts->keytype_jitter_select;
            break;
          case TH_KEYTYPE_MOVEHOLD:
            cp = ts->keytype_movehold;
            break;
          case TH_KEYTYPE_MOVEHOLD_SELECT:
            cp = ts->keytype_movehold_select;
            break;
          case TH_KEYBORDER:
            cp = ts->keyborder;
            break;
          case TH_KEYBORDER_SELECT:
            cp = ts->keyborder_select;
            break;
          case TH_CFRAME:
            cp = ts->cframe;
            break;
          case TH_TIME_KEYFRAME:
            cp = ts->time_keyframe;
            break;
          case TH_TIME_GP_KEYFRAME:
            cp = ts->time_gp_keyframe;
            break;
          case TH_NURB_ULINE:
            cp = ts->nurb_uline;
            break;
          case TH_NURB_VLINE:
            cp = ts->nurb_vline;
            break;
          case TH_NURB_SEL_ULINE:
            cp = ts->nurb_sel_uline;
            break;
          case TH_NURB_SEL_VLINE:
            cp = ts->nurb_sel_vline;
            break;
          case TH_ACTIVE_SPLINE:
            cp = ts->act_spline;
            break;
          case TH_ACTIVE_VERT:
            cp = ts->lastsel_point;
            break;
          case TH_HANDLE_FREE:
            cp = ts->handle_free;
            break;
          case TH_HANDLE_AUTO:
            cp = ts->handle_auto;
            break;
          case TH_HANDLE_AUTOCLAMP:
            cp = ts->handle_auto_clamped;
            break;
          case TH_HANDLE_VECT:
            cp = ts->handle_vect;
            break;
          case TH_HANDLE_ALIGN:
            cp = ts->handle_align;
            break;
          case TH_HANDLE_SEL_FREE:
            cp = ts->handle_sel_free;
            break;
          case TH_HANDLE_SEL_AUTO:
            cp = ts->handle_sel_auto;
            break;
          case TH_HANDLE_SEL_AUTOCLAMP:
            cp = ts->handle_sel_auto_clamped;
            break;
          case TH_HANDLE_SEL_VECT:
            cp = ts->handle_sel_vect;
            break;
          case TH_HANDLE_SEL_ALIGN:
            cp = ts->handle_sel_align;
            break;
          case TH_FREESTYLE_EDGE_MARK:
            cp = ts->freestyle_edge_mark;
            break;
          case TH_FREESTYLE_FACE_MARK:
            cp = ts->freestyle_face_mark;
            break;
  
          case TH_SYNTAX_B:
            cp = ts->syntaxb;
            break;
          case TH_SYNTAX_V:
            cp = ts->syntaxv;
            break;
          case TH_SYNTAX_C:
            cp = ts->syntaxc;
            break;
          case TH_SYNTAX_L:
            cp = ts->syntaxl;
            break;
          case TH_SYNTAX_D:
            cp = ts->syntaxd;
            break;
          case TH_SYNTAX_R:
            cp = ts->syntaxr;
            break;
          case TH_SYNTAX_N:
            cp = ts->syntaxn;
            break;
          case TH_SYNTAX_S:
            cp = ts->syntaxs;
            break;
          case TH_LINENUMBERS:
            cp = ts->line_numbers;
            break;
  
          case TH_NODE:
            cp = ts->syntaxl;
            break;
          case TH_NODE_INPUT:
            cp = ts->syntaxn;
            break;
          case TH_NODE_OUTPUT:
            cp = ts->nodeclass_output;
            break;
          case TH_NODE_COLOR:
            cp = ts->syntaxb;
            break;
          case TH_NODE_FILTER:
            cp = ts->nodeclass_filter;
            break;
          case TH_NODE_VECTOR:
            cp = ts->nodeclass_vector;
            break;
          case TH_NODE_TEXTURE:
            cp = ts->nodeclass_texture;
            break;
          case TH_NODE_PATTERN:
            cp = ts->nodeclass_pattern;
            break;
          case TH_NODE_SCRIPT:
            cp = ts->nodeclass_script;
            break;
          case TH_NODE_LAYOUT:
            cp = ts->nodeclass_layout;
            break;
          case TH_NODE_SHADER:
            cp = ts->nodeclass_shader;
            break;
          case TH_NODE_CONVERTOR:
            cp = ts->syntaxv;
            break;
          case TH_NODE_GROUP:
            cp = ts->syntaxc;
            break;
          case TH_NODE_INTERFACE:
            cp = ts->console_output;
            break;
          case TH_NODE_FRAME:
            cp = ts->movie;
            break;
          case TH_NODE_MATTE:
            cp = ts->syntaxs;
            break;
          case TH_NODE_DISTORT:
            cp = ts->syntaxd;
            break;
          case TH_NODE_CURVING:
            cp = &ts->noodle_curving;
            break;
  
          case TH_SEQ_MOVIE:
            cp = ts->movie;
            break;
          case TH_SEQ_MOVIECLIP:
            cp = ts->movieclip;
            break;
          case TH_SEQ_MASK:
            cp = ts->mask;
            break;
          case TH_SEQ_IMAGE:
            cp = ts->image;
            break;
          case TH_SEQ_SCENE:
            cp = ts->scene;
            break;
          case TH_SEQ_AUDIO:
            cp = ts->audio;
            break;
          case TH_SEQ_EFFECT:
            cp = ts->effect;
            break;
          case TH_SEQ_TRANSITION:
            cp = ts->transition;
            break;
          case TH_SEQ_META:
            cp = ts->meta;
            break;
          case TH_SEQ_TEXT:
            cp = ts->text_strip;
            break;
          case TH_SEQ_PREVIEW:
            cp = ts->preview_back;
            break;
  
          case TH_CONSOLE_OUTPUT:
            cp = ts->console_output;
            break;
          case TH_CONSOLE_INPUT:
            cp = ts->console_input;
            break;
          case TH_CONSOLE_INFO:
            cp = ts->console_info;
            break;
          case TH_CONSOLE_ERROR:
            cp = ts->console_error;
            break;
          case TH_CONSOLE_CURSOR:
            cp = ts->console_cursor;
            break;
          case TH_CONSOLE_SELECT:
            cp = ts->console_select;
            break;
  
          case TH_HANDLE_VERTEX:
            cp = ts->handle_vertex;
            break;
          case TH_HANDLE_VERTEX_SELECT:
            cp = ts->handle_vertex_select;
            break;
          case TH_HANDLE_VERTEX_SIZE:
            cp = &ts->handle_vertex_size;
            break;
  
          case TH_GP_VERTEX:
            cp = ts->gp_vertex;
            break;
          case TH_GP_VERTEX_SELECT:
            cp = ts->gp_vertex_select;
            break;
          case TH_GP_VERTEX_SIZE:
            cp = &ts->gp_vertex_size;
            break;
  
          case TH_DOPESHEET_CHANNELOB:
            cp = ts->ds_channel;
            break;
          case TH_DOPESHEET_CHANNELSUBOB:
            cp = ts->ds_subchannel;
            break;
          case TH_DOPESHEET_IPOLINE:
            cp = ts->ds_ipoline;
            break;
  
          case TH_PREVIEW_BACK:
            cp = ts->preview_back;
            break;
  
          case TH_STITCH_PREVIEW_FACE:
            cp = ts->preview_stitch_face;
            break;
  
          case TH_STITCH_PREVIEW_EDGE:
            cp = ts->preview_stitch_edge;
            break;
  
          case TH_STITCH_PREVIEW_VERT:
            cp = ts->preview_stitch_vert;
            break;
  
          case TH_STITCH_PREVIEW_STITCHABLE:
            cp = ts->preview_stitch_stitchable;
            break;
  
          case TH_STITCH_PREVIEW_UNSTITCHABLE:
            cp = ts->preview_stitch_unstitchable;
            break;
          case TH_STITCH_PREVIEW_ACTIVE:
            cp = ts->preview_stitch_active;
            break;
  
          case TH_PAINT_CURVE_HANDLE:
            cp = ts->paint_curve_handle;
            break;
          case TH_PAINT_CURVE_PIVOT:
            cp = ts->paint_curve_pivot;
            break;
  
          case TH_METADATA_BG:
            cp = ts->metadatabg;
            break;
          case TH_METADATA_TEXT:
            cp = ts->metadatatext;
            break;
  
          case TH_UV_OTHERS:
            cp = ts->uv_others;
            break;
          case TH_UV_SHADOW:
            cp = ts->uv_shadow;
            break;
  
          case TH_MARKER_OUTLINE:
            cp = ts->marker_outline;
            break;
          case TH_MARKER:
            cp = ts->marker;
            break;
          case TH_ACT_MARKER:
            cp = ts->act_marker;
            break;
          case TH_SEL_MARKER:
            cp = ts->sel_marker;
            break;
          case TH_BUNDLE_SOLID:
            cp = ts->bundle_solid;
            break;
          case TH_DIS_MARKER:
            cp = ts->dis_marker;
            break;
          case TH_PATH_BEFORE:
            cp = ts->path_before;
            break;
          case TH_PATH_AFTER:
            cp = ts->path_after;
            break;
          case TH_PATH_KEYFRAME_BEFORE:
            cp = ts->path_keyframe_before;
            break;
          case TH_PATH_KEYFRAME_AFTER:
            cp = ts->path_keyframe_after;
            break;
          case TH_CAMERA_PATH:
            cp = ts->camera_path;
            break;
          case TH_LOCK_MARKER:
            cp = ts->lock_marker;
            break;
  
          case TH_MATCH:
            cp = ts->match;
            break;
  
          case TH_SELECT_HIGHLIGHT:
            cp = ts->selected_highlight;
            break;
  
          case TH_SELECT_ACTIVE:
            cp = ts->active;
            break;
  
          case TH_SELECTED_OBJECT:
            cp = ts->selected_object;
            break;
  
          case TH_ACTIVE_OBJECT:
            cp = ts->active_object;
            break;
  
          case TH_EDITED_OBJECT:
            cp = ts->edited_object;
            break;
  
          case TH_ROW_ALTERNATE:
            cp = ts->row_alternate;
            break;
  
          case TH_SKIN_ROOT:
            cp = ts->skin_root;
            break;
  
          case TH_ANIM_ACTIVE:
            cp = ts->anim_active;
            break;
          case TH_ANIM_INACTIVE:
            cp = ts->anim_non_active;
            break;
          case TH_ANIM_PREVIEW_RANGE:
            cp = ts->anim_preview_range;
            break;
  
          case TH_NLA_TWEAK:
            cp = ts->nla_tweaking;
            break;
          case TH_NLA_TWEAK_DUPLI:
            cp = ts->nla_tweakdupli;
            break;
  
          case TH_NLA_TRACK:
            cp = ts->nla_track;
            break;
          case TH_NLA_TRANSITION:
            cp = ts->nla_transition;
            break;
          case TH_NLA_TRANSITION_SEL:
            cp = ts->nla_transition_sel;
            break;
          case TH_NLA_META:
            cp = ts->nla_meta;
            break;
          case TH_NLA_META_SEL:
            cp = ts->nla_meta_sel;
            break;
          case TH_NLA_SOUND:
            cp = ts->nla_sound;
            break;
          case TH_NLA_SOUND_SEL:
            cp = ts->nla_sound_sel;
            break;
  
          case TH_WIDGET_EMBOSS:
            cp = btheme->tui.widget_emboss;
            break;
  
          case TH_EDITOR_OUTLINE:
            cp = btheme->tui.editor_outline;
            break;
          case TH_WIDGET_TEXT_CURSOR:
            cp = btheme->tui.widget_text_cursor;
            break;
          case TH_AXIS_X:
            cp = btheme->tui.xaxis;
            break;
          case TH_AXIS_Y:
            cp = btheme->tui.yaxis;
            break;
          case TH_AXIS_Z:
            cp = btheme->tui.zaxis;
            break;
  
          case TH_GIZMO_HI:
            cp = btheme->tui.gizmo_hi;
            break;
          case TH_GIZMO_PRIMARY:
            cp = btheme->tui.gizmo_primary;
            break;
          case TH_GIZMO_SECONDARY:
            cp = btheme->tui.gizmo_secondary;
            break;
          case TH_GIZMO_A:
            cp = btheme->tui.gizmo_a;
            break;
          case TH_GIZMO_B:
            cp = btheme->tui.gizmo_b;
            break;
  
          case TH_ICON_SCENE:
            cp = btheme->tui.icon_scene;
            break;
          case TH_ICON_COLLECTION:
            cp = btheme->tui.icon_collection;
            break;
          case TH_ICON_OBJECT:
            cp = btheme->tui.icon_object;
            break;
          case TH_ICON_OBJECT_DATA:
            cp = btheme->tui.icon_object_data;
            break;
          case TH_ICON_MODIFIER:
            cp = btheme->tui.icon_modifier;
            break;
          case TH_ICON_SHADING:
            cp = btheme->tui.icon_shading;
            break;
          case TH_ICON_FOLDER:
            cp = btheme->tui.icon_folder;
            break;
          case TH_ICON_FUND: {
            /* Development fund icon color is not part of theme. */
            static const uchar red[4] = {204, 48, 72, 255};
            cp = red;
            break;
          }
  
          case TH_SCROLL_TEXT:
            cp = btheme->tui.wcol_scroll.text;
            break;
  
          case TH_INFO_SELECTED:
            cp = ts->info_selected;
            break;
          case TH_INFO_SELECTED_TEXT:
            cp = ts->info_selected_text;
            break;
          case TH_INFO_ERROR:
            cp = ts->info_error;
            break;
          case TH_INFO_ERROR_TEXT:
            cp = ts->info_error_text;
            break;
          case TH_INFO_WARNING:
            cp = ts->info_warning;
            break;
          case TH_INFO_WARNING_TEXT:
            cp = ts->info_warning_text;
            break;
          case TH_INFO_INFO:
            cp = ts->info_info;
            break;
          case TH_INFO_INFO_TEXT:
            cp = ts->info_info_text;
            break;
          case TH_INFO_DEBUG:
            cp = ts->info_debug;
            break;
          case TH_INFO_DEBUG_TEXT:
            cp = ts->info_debug_text;
            break;
          case TH_INFO_PROPERTY:
            cp = ts->info_property;
            break;
          case TH_INFO_PROPERTY_TEXT:
            cp = ts->info_property_text;
            break;
          case TH_INFO_OPERATOR:
            cp = ts->info_operator;
            break;
          case TH_INFO_OPERATOR_TEXT:
            cp = ts->info_operator_text;
            break;
          case TH_V3D_CLIPPING_BORDER:
            cp = ts->clipping_border_3d;
            break;
        }
      }
    }
  
    return (const uchar *)cp;
  }
  
  /**
   * Initialize default theme.
   *
   * \note When you add new colors, created & saved themes need initialized
   * use function below, #init_userdef_do_versions.
   */
  void UI_theme_init_default(void)
  {
    /* we search for the theme with name Default */
    bTheme *btheme = BLI_findstring(&U.themes, "Default", offsetof(bTheme, name));
    if (btheme == NULL) {
      btheme = MEM_callocN(sizeof(bTheme), __func__);
      BLI_addtail(&U.themes, btheme);
    }
  
    UI_SetTheme(0, 0); /* make sure the global used in this file is set */
  
    const int active_theme_area = btheme->active_theme_area;
    memcpy(btheme, &U_theme_default, sizeof(*btheme));
    btheme->active_theme_area = active_theme_area;
  }
  
  void UI_style_init_default(void)
  {
    BLI_freelistN(&U.uistyles);
    /* gets automatically re-allocated */
    uiStyleInit();
  }
  
  void UI_SetTheme(int spacetype, int regionid)
  {
    if (spacetype) {
      /* later on, a local theme can be found too */
      theme_active = U.themes.first;
      theme_spacetype = spacetype;
      theme_regionid = regionid;
    }
    else if (regionid) {
      /* popups */
      theme_active = U.themes.first;
      theme_spacetype = SPACE_PROPERTIES;
      theme_regionid = regionid;
    }
    else {
      /* for safety, when theme was deleted */
      theme_active = U.themes.first;
      theme_spacetype = SPACE_VIEW3D;
      theme_regionid = RGN_TYPE_WINDOW;
    }
  }
  
  bTheme *UI_GetTheme(void)
  {
    return U.themes.first;
  }
  
  /**
   * for the rare case we need to temp swap in a different theme (offscreen render)
   */
  void UI_Theme_Store(struct bThemeState *theme_state)
  {
    *theme_state = g_theme_state;
  }
  void UI_Theme_Restore(struct bThemeState *theme_state)
  {
    g_theme_state = *theme_state;
  }
  
  void UI_GetThemeColorShadeAlpha4ubv(int colorid, int coloffset, int alphaoffset, uchar col[4])
  {
    int r, g, b, a;
    const uchar *cp;
  
    cp = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid);
    r = coloffset + (int)cp[0];
    CLAMP(r, 0, 255);
    g = coloffset + (int)cp[1];
    CLAMP(g, 0, 255);
    b = coloffset + (int)cp[2];
    CLAMP(b, 0, 255);
    a = alphaoffset + (int)cp[3];
    CLAMP(a, 0, 255);
  
    col[0] = r;
    col[1] = g;
    col[2] = b;
    col[3] = a;
  }
  
  void UI_GetThemeColorBlend3ubv(int colorid1, int colorid2, float fac, uchar col[3])
  {
    const uchar *cp1, *cp2;
  
    cp1 = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid1);
    cp2 = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid2);
  
    CLAMP(fac, 0.0f, 1.0f);
    col[0] = floorf((1.0f - fac) * cp1[0] + fac * cp2[0]);
    col[1] = floorf((1.0f - fac) * cp1[1] + fac * cp2[1]);
    col[2] = floorf((1.0f - fac) * cp1[2] + fac * cp2[2]);
  }
  
  void UI_GetThemeColorBlend3f(int colorid1, int colorid2, float fac, float r_col[3])
  {
    const uchar *cp1, *cp2;
  
    cp1 = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid1);
    cp2 = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid2);
  
    CLAMP(fac, 0.0f, 1.0f);
    r_col[0] = ((1.0f - fac) * cp1[0] + fac * cp2[0]) / 255.0f;
    r_col[1] = ((1.0f - fac) * cp1[1] + fac * cp2[1]) / 255.0f;
    r_col[2] = ((1.0f - fac) * cp1[2] + fac * cp2[2]) / 255.0f;
  }
  
  void UI_GetThemeColorBlend4f(int colorid1, int colorid2, float fac, float r_col[4])
  {
    const uchar *cp1, *cp2;
  
    cp1 = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid1);
    cp2 = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid2);
  
    CLAMP(fac, 0.0f, 1.0f);
    r_col[0] = ((1.0f - fac) * cp1[0] + fac * cp2[0]) / 255.0f;
    r_col[1] = ((1.0f - fac) * cp1[1] + fac * cp2[1]) / 255.0f;
    r_col[2] = ((1.0f - fac) * cp1[2] + fac * cp2[2]) / 255.0f;
    r_col[3] = ((1.0f - fac) * cp1[3] + fac * cp2[3]) / 255.0f;
  }
  
  void UI_FontThemeColor(int fontid, int colorid)
  {
    uchar color[4];
    UI_GetThemeColor4ubv(colorid, color);
    BLF_color4ubv(fontid, color);
  }
  
  /* get individual values, not scaled */
  float UI_GetThemeValuef(int colorid)
  {
    const uchar *cp;
  
    cp = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid);
    return ((float)cp[0]);
  }
  
  /* get individual values, not scaled */
  int UI_GetThemeValue(int colorid)
  {
    const uchar *cp;
  
    cp = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid);
    return ((int)cp[0]);
  }
  
  /* versions of the function above, which take a space-type */
  float UI_GetThemeValueTypef(int colorid, int spacetype)
  {
    const uchar *cp;
  
    cp = UI_ThemeGetColorPtr(theme_active, spacetype, colorid);
    return ((float)cp[0]);
  }
  
  int UI_GetThemeValueType(int colorid, int spacetype)
  {
    const uchar *cp;
  
    cp = UI_ThemeGetColorPtr(theme_active, spacetype, colorid);
    return ((int)cp[0]);
  }
  
  /* get the color, range 0.0-1.0 */
  void UI_GetThemeColor3fv(int colorid, float col[3])
  {
    const uchar *cp;
  
    cp = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid);
    col[0] = ((float)cp[0]) / 255.0f;
    col[1] = ((float)cp[1]) / 255.0f;
    col[2] = ((float)cp[2]) / 255.0f;
  }
  
  void UI_GetThemeColor4fv(int colorid, float col[4])
  {
    const uchar *cp;
  
    cp = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid);
    col[0] = ((float)cp[0]) / 255.0f;
    col[1] = ((float)cp[1]) / 255.0f;
    col[2] = ((float)cp[2]) / 255.0f;
    col[3] = ((float)cp[3]) / 255.0f;
  }
  
  void UI_GetThemeColorType4fv(int colorid, int spacetype, float col[4])
  {
    const unsigned char *cp;
  
    cp = UI_ThemeGetColorPtr(theme_active, spacetype, colorid);
    col[0] = ((float)cp[0]) / 255.0f;
    col[1] = ((float)cp[1]) / 255.0f;
    col[2] = ((float)cp[2]) / 255.0f;
    col[3] = ((float)cp[3]) / 255.0f;
  }
  
  /* get the color, range 0.0-1.0, complete with shading offset */
  void UI_GetThemeColorShade3fv(int colorid, int offset, float col[3])
  {
    int r, g, b;
    const uchar *cp;
  
    cp = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid);
  
    r = offset + (int)cp[0];
    CLAMP(r, 0, 255);
    g = offset + (int)cp[1];
    CLAMP(g, 0, 255);
    b = offset + (int)cp[2];
    CLAMP(b, 0, 255);
  
    col[0] = ((float)r) / 255.0f;
    col[1] = ((float)g) / 255.0f;
    col[2] = ((float)b) / 255.0f;
  }
  
  void UI_GetThemeColorShade3ubv(int colorid, int offset, uchar col[3])
  {
    int r, g, b;
    const uchar *cp;
  
    cp = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid);
  
    r = offset + (int)cp[0];
    CLAMP(r, 0, 255);
    g = offset + (int)cp[1];
    CLAMP(g, 0, 255);
    b = offset + (int)cp[2];
    CLAMP(b, 0, 255);
  
    col[0] = r;
    col[1] = g;
    col[2] = b;
  }
  
  void UI_GetThemeColorBlendShade3ubv(
      int colorid1, int colorid2, float fac, int offset, uchar col[3])
  {
    const uchar *cp1, *cp2;
  
    cp1 = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid1);
    cp2 = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid2);
  
    CLAMP(fac, 0.0f, 1.0f);
  
    float blend[3];
    blend[0] = offset + floorf((1.0f - fac) * cp1[0] + fac * cp2[0]);
    blend[1] = offset + floorf((1.0f - fac) * cp1[1] + fac * cp2[1]);
    blend[2] = offset + floorf((1.0f - fac) * cp1[2] + fac * cp2[2]);
  
    unit_float_to_uchar_clamp_v3(col, blend);
  }
  
  void UI_GetThemeColorShade4ubv(int colorid, int offset, uchar col[4])
  {
    int r, g, b;
    const uchar *cp;
  
    cp = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid);
    r = offset + (int)cp[0];
    CLAMP(r, 0, 255);
    g = offset + (int)cp[1];
    CLAMP(g, 0, 255);
    b = offset + (int)cp[2];
    CLAMP(b, 0, 255);
  
    col[0] = r;
    col[1] = g;
    col[2] = b;
    col[3] = cp[3];
  }
  
  void UI_GetThemeColorShadeAlpha4fv(int colorid, int coloffset, int alphaoffset, float col[4])
  {
    int r, g, b, a;
    const uchar *cp;
  
    cp = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid);
  
    r = coloffset + (int)cp[0];
    CLAMP(r, 0, 255);
    g = coloffset + (int)cp[1];
    CLAMP(g, 0, 255);
    b = coloffset + (int)cp[2];
    CLAMP(b, 0, 255);
    a = alphaoffset + (int)cp[3];
    CLAMP(a, 0, 255);
  
    col[0] = ((float)r) / 255.0f;
    col[1] = ((float)g) / 255.0f;
    col[2] = ((float)b) / 255.0f;
    col[3] = ((float)a) / 255.0f;
  }
  
  void UI_GetThemeColorBlendShade3fv(int colorid1, int colorid2, float fac, int offset, float col[3])
  {
    int r, g, b;
    const uchar *cp1, *cp2;
  
    cp1 = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid1);
    cp2 = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid2);
  
    CLAMP(fac, 0.0f, 1.0f);
  
    r = offset + floorf((1.0f - fac) * cp1[0] + fac * cp2[0]);
    CLAMP(r, 0, 255);
    g = offset + floorf((1.0f - fac) * cp1[1] + fac * cp2[1]);
    CLAMP(g, 0, 255);
    b = offset + floorf((1.0f - fac) * cp1[2] + fac * cp2[2]);
    CLAMP(b, 0, 255);
  
    col[0] = ((float)r) / 255.0f;
    col[1] = ((float)g) / 255.0f;
    col[2] = ((float)b) / 255.0f;
  }
  
  void UI_GetThemeColorBlendShade4fv(int colorid1, int colorid2, float fac, int offset, float col[4])
  {
    int r, g, b, a;
    const uchar *cp1, *cp2;
  
    cp1 = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid1);
    cp2 = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid2);
  
    CLAMP(fac, 0.0f, 1.0f);
  
    r = offset + floorf((1.0f - fac) * cp1[0] + fac * cp2[0]);
    CLAMP(r, 0, 255);
    g = offset + floorf((1.0f - fac) * cp1[1] + fac * cp2[1]);
    CLAMP(g, 0, 255);
    b = offset + floorf((1.0f - fac) * cp1[2] + fac * cp2[2]);
    CLAMP(b, 0, 255);
    a = offset + floorf((1.0f - fac) * cp1[3] + fac * cp2[3]);
    CLAMP(a, 0, 255);
  
    col[0] = ((float)r) / 255.0f;
    col[1] = ((float)g) / 255.0f;
    col[2] = ((float)b) / 255.0f;
    col[3] = ((float)a) / 255.0f;
  }
  
  /* get the color, in char pointer */
  void UI_GetThemeColor3ubv(int colorid, uchar col[3])
  {
    const uchar *cp;
  
    cp = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid);
    col[0] = cp[0];
    col[1] = cp[1];
    col[2] = cp[2];
  }
  
  /* get the color, range 0.0-1.0, complete with shading offset */
  void UI_GetThemeColorShade4fv(int colorid, int offset, float col[4])
  {
    int r, g, b, a;
    const uchar *cp;
  
    cp = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid);
  
    r = offset + (int)cp[0];
    CLAMP(r, 0, 255);
    g = offset + (int)cp[1];
    CLAMP(g, 0, 255);
    b = offset + (int)cp[2];
    CLAMP(b, 0, 255);
  
    a = (int)cp[3]; /* no shading offset... */
    CLAMP(a, 0, 255);
  
    col[0] = ((float)r) / 255.0f;
    col[1] = ((float)g) / 255.0f;
    col[2] = ((float)b) / 255.0f;
    col[3] = ((float)a) / 255.0f;
  }
  
  /* get the color, in char pointer */
  void UI_GetThemeColor4ubv(int colorid, uchar col[4])
  {
    const uchar *cp;
  
    cp = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid);
    col[0] = cp[0];
    col[1] = cp[1];
    col[2] = cp[2];
    col[3] = cp[3];
  }
  
  void UI_GetThemeColorType3fv(int colorid, int spacetype, float col[3])
  {
    const uchar *cp;
  
    cp = UI_ThemeGetColorPtr(theme_active, spacetype, colorid);
    col[0] = ((float)cp[0]) / 255.0f;
    col[1] = ((float)cp[1]) / 255.0f;
    col[2] = ((float)cp[2]) / 255.0f;
  }
  
  void UI_GetThemeColorType3ubv(int colorid, int spacetype, uchar col[3])
  {
    const uchar *cp;
  
    cp = UI_ThemeGetColorPtr(theme_active, spacetype, colorid);
    col[0] = cp[0];
    col[1] = cp[1];
    col[2] = cp[2];
  }
  
  void UI_GetThemeColorType4ubv(int colorid, int spacetype, uchar col[4])
  {
    const uchar *cp;
  
    cp = UI_ThemeGetColorPtr(theme_active, spacetype, colorid);
    col[0] = cp[0];
    col[1] = cp[1];
    col[2] = cp[2];
    col[3] = cp[3];
  }
  
  bool UI_GetIconThemeColor4ubv(int colorid, uchar col[4])
  {
    if (colorid == 0) {
      return false;
    }
    else if (colorid == TH_ICON_FUND) {
      /* Always color development fund icon. */
    }
    else if (!((theme_spacetype == SPACE_OUTLINER && theme_regionid == RGN_TYPE_WINDOW) ||
               (theme_spacetype == SPACE_PROPERTIES && theme_regionid == RGN_TYPE_NAV_BAR) ||
               (theme_spacetype == SPACE_FILE && theme_regionid == RGN_TYPE_WINDOW))) {
      /* Only colored icons in specific places, overall UI is intended
       * to stay monochrome and out of the way except a few places where it
       * is important to communicate different data types. */
      return false;
    }
  
    const uchar *cp = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid);
    col[0] = cp[0];
    col[1] = cp[1];
    col[2] = cp[2];
    col[3] = cp[3];
  
    return true;
  }
  
  void UI_GetColorPtrShade3ubv(const uchar cp[3], uchar col[3], int offset)
  {
    int r, g, b;
  
    r = offset + (int)cp[0];
    g = offset + (int)cp[1];
    b = offset + (int)cp[2];
  
    CLAMP(r, 0, 255);
    CLAMP(g, 0, 255);
    CLAMP(b, 0, 255);
  
    col[0] = r;
    col[1] = g;
    col[2] = b;
  }
  
  /* get a 3 byte color, blended and shaded between two other char color pointers */
  void UI_GetColorPtrBlendShade3ubv(
      const uchar cp1[3], const uchar cp2[3], uchar col[3], float fac, int offset)
  {
    int r, g, b;
  
    CLAMP(fac, 0.0f, 1.0f);
    r = offset + floor((1.0f - fac) * cp1[0] + fac * cp2[0]);
    g = offset + floor((1.0f - fac) * cp1[1] + fac * cp2[1]);
    b = offset + floor((1.0f - fac) * cp1[2] + fac * cp2[2]);
  
    CLAMP(r, 0, 255);
    CLAMP(g, 0, 255);
    CLAMP(b, 0, 255);
  
    col[0] = r;
    col[1] = g;
    col[2] = b;
  }
  
  void UI_ThemeClearColor(int colorid)
  {
    float col[3];
  
    UI_GetThemeColor3fv(colorid, col);
    GPU_clear_color(col[0], col[1], col[2], 0.0f);
  }
  
  void UI_ThemeClearColorAlpha(int colorid, float alpha)
  {
    float col[3];
    UI_GetThemeColor3fv(colorid, col);
    GPU_clear_color(col[0], col[1], col[2], alpha);
  }
  
  int UI_ThemeMenuShadowWidth(void)
  {
    bTheme *btheme = UI_GetTheme();
    return (int)(btheme->tui.menu_shadow_width * UI_DPI_FAC);
  }
  
  void UI_make_axis_color(const uchar src_col[3], uchar dst_col[3], const char axis)
  {
    uchar col[3];
  
    switch (axis) {
      case 'X':
        UI_GetThemeColor3ubv(TH_AXIS_X, col);
        UI_GetColorPtrBlendShade3ubv(src_col, col, dst_col, 0.5f, -10);
        break;
      case 'Y':
        UI_GetThemeColor3ubv(TH_AXIS_Y, col);
        UI_GetColorPtrBlendShade3ubv(src_col, col, dst_col, 0.5f, -10);
        break;
      case 'Z':
        UI_GetThemeColor3ubv(TH_AXIS_Z, col);
        UI_GetColorPtrBlendShade3ubv(src_col, col, dst_col, 0.5f, -10);
        break;
      default:
        BLI_assert(0);
        break;
    }
  }
  
  /* patching UserDef struct and Themes */
  void init_userdef_do_versions(Main *bmain)
  {
    BLO_version_defaults_userpref_blend(bmain, &U);
  
    if (STREQ(U.tempdir, "/")) {
      BKE_tempdir_system_init(U.tempdir);
    }
  
    /* Not versioning, just avoid errors. */
  #ifndef WITH_CYCLES
    BKE_addon_remove_safe(&U.addons, "cycles");
  #endif
  }
  