Cleanup: Move interface View2D files to C++

Similar to 4537eb0c3b1678a6235

1 files changed, 0 insertions, 2127 deletions

diff --git a/source/blender/editors/interface/view2d.c b/source/blender/editors/interface/view2d.c
deleted file mode 100644
index bf3c8362ce6..00000000000
--- a/source/blender/editors/interface/view2d.c
+++ /dev/null
@@ -1,2127 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later
- * Copyright 2008 Blender Foundation. All rights reserved. */
-
-/** \file
- * \ingroup edinterface
- */
-
-#include <float.h>
-#include <limits.h>
-#include <math.h>
-#include <string.h>
-
-#include "MEM_guardedalloc.h"
-
-#include "DNA_scene_types.h"
-#include "DNA_userdef_types.h"
-
-#include "BLI_array.h"
-#include "BLI_easing.h"
-#include "BLI_link_utils.h"
-#include "BLI_listbase.h"
-#include "BLI_math.h"
-#include "BLI_memarena.h"
-#include "BLI_rect.h"
-#include "BLI_string.h"
-#include "BLI_timecode.h"
-#include "BLI_utildefines.h"
-
-#include "BKE_context.h"
-#include "BKE_global.h"
-#include "BKE_screen.h"
-
-#include "GPU_immediate.h"
-#include "GPU_matrix.h"
-#include "GPU_state.h"
-
-#include "WM_api.h"
-
-#include "BLF_api.h"
-
-#include "ED_screen.h"
-
-#include "UI_interface.h"
-#include "UI_view2d.h"
-
-#include "interface_intern.h"
-
-static void ui_view2d_curRect_validate_resize(View2D *v2d, bool resize);
-
-/* -------------------------------------------------------------------- */
-/** \name Internal Utilities
- * \{ */
-
-BLI_INLINE int clamp_float_to_int(const float f)
-{
-  const float min = (float)INT_MIN;
-  const float max = (float)INT_MAX;
-
-  if (UNLIKELY(f < min)) {
-    return min;
-  }
-  if (UNLIKELY(f > max)) {
-    return (int)max;
-  }
-  return (int)f;
-}
-
-/**
- * use instead of #BLI_rcti_rctf_copy so we have consistent behavior
- * with users of #clamp_float_to_int.
- */
-BLI_INLINE void clamp_rctf_to_rcti(rcti *dst, const rctf *src)
-{
-  dst->xmin = clamp_float_to_int(src->xmin);
-  dst->xmax = clamp_float_to_int(src->xmax);
-  dst->ymin = clamp_float_to_int(src->ymin);
-  dst->ymax = clamp_float_to_int(src->ymax);
-}
-
-/* XXX still unresolved: scrolls hide/unhide vs region mask handling */
-/* XXX there's V2D_SCROLL_HORIZONTAL_HIDE and V2D_SCROLL_HORIZONTAL_FULLR ... */
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name Internal Scroll & Mask Utilities
- * \{ */
-
-/**
- * helper to allow scrollbars to dynamically hide
- * - returns a copy of the scrollbar settings with the flags to display
- *   horizontal/vertical scrollbars removed
- * - input scroll value is the v2d->scroll var
- * - hide flags are set per region at drawtime
- */
-static int view2d_scroll_mapped(int scroll)
-{
-  if (scroll & V2D_SCROLL_HORIZONTAL_FULLR) {
-    scroll &= ~V2D_SCROLL_HORIZONTAL;
-  }
-  if (scroll & V2D_SCROLL_VERTICAL_FULLR) {
-    scroll &= ~V2D_SCROLL_VERTICAL;
-  }
-  return scroll;
-}
-
-void UI_view2d_mask_from_win(const View2D *v2d, rcti *r_mask)
-{
-  r_mask->xmin = 0;
-  r_mask->ymin = 0;
-  r_mask->xmax = v2d->winx - 1; /* -1 yes! masks are pixels */
-  r_mask->ymax = v2d->winy - 1;
-}
-
-/**
- * Called each time #View2D.cur changes, to dynamically update masks.
- *
- * \param mask_scroll: Optionally clamp scrollbars by this region.
- */
-static void view2d_masks(View2D *v2d, const rcti *mask_scroll)
-{
-  int scroll;
-
-  /* mask - view frame */
-  UI_view2d_mask_from_win(v2d, &v2d->mask);
-  if (mask_scroll == NULL) {
-    mask_scroll = &v2d->mask;
-  }
-
-  /* check size if hiding flag is set: */
-  if (v2d->scroll & V2D_SCROLL_HORIZONTAL_HIDE) {
-    if (!(v2d->scroll & V2D_SCROLL_HORIZONTAL_HANDLES)) {
-      if (BLI_rctf_size_x(&v2d->tot) > BLI_rctf_size_x(&v2d->cur)) {
-        v2d->scroll &= ~V2D_SCROLL_HORIZONTAL_FULLR;
-      }
-      else {
-        v2d->scroll |= V2D_SCROLL_HORIZONTAL_FULLR;
-      }
-    }
-  }
-  if (v2d->scroll & V2D_SCROLL_VERTICAL_HIDE) {
-    if (!(v2d->scroll & V2D_SCROLL_VERTICAL_HANDLES)) {
-      if (BLI_rctf_size_y(&v2d->tot) + 0.01f > BLI_rctf_size_y(&v2d->cur)) {
-        v2d->scroll &= ~V2D_SCROLL_VERTICAL_FULLR;
-      }
-      else {
-        v2d->scroll |= V2D_SCROLL_VERTICAL_FULLR;
-      }
-    }
-  }
-
-  scroll = view2d_scroll_mapped(v2d->scroll);
-
-  /* Scrollers are based off region-size:
-   * - they can only be on one to two edges of the region they define
-   * - if they overlap, they must not occupy the corners (which are reserved for other widgets)
-   */
-  if (scroll) {
-    float scroll_width, scroll_height;
-
-    UI_view2d_scroller_size_get(v2d, &scroll_width, &scroll_height);
-
-    /* vertical scroller */
-    if (scroll & V2D_SCROLL_LEFT) {
-      /* on left-hand edge of region */
-      v2d->vert = *mask_scroll;
-      v2d->vert.xmax = scroll_width;
-    }
-    else if (scroll & V2D_SCROLL_RIGHT) {
-      /* on right-hand edge of region */
-      v2d->vert = *mask_scroll;
-      v2d->vert.xmax++; /* one pixel extra... was leaving a minor gap... */
-      v2d->vert.xmin = v2d->vert.xmax - scroll_width;
-    }
-
-    /* Currently, all regions that have vertical scale handles,
-     * also have the scrubbing area at the top.
-     * So the scrollbar has to move down a bit. */
-    if (scroll & V2D_SCROLL_VERTICAL_HANDLES) {
-      v2d->vert.ymax -= UI_TIME_SCRUB_MARGIN_Y;
-    }
-
-    /* horizontal scroller */
-    if (scroll & V2D_SCROLL_BOTTOM) {
-      /* on bottom edge of region */
-      v2d->hor = *mask_scroll;
-      v2d->hor.ymax = scroll_height;
-    }
-    else if (scroll & V2D_SCROLL_TOP) {
-      /* on upper edge of region */
-      v2d->hor = *mask_scroll;
-      v2d->hor.ymin = v2d->hor.ymax - scroll_height;
-    }
-
-    /* adjust vertical scroller if there's a horizontal scroller, to leave corner free */
-    if (scroll & V2D_SCROLL_VERTICAL) {
-      if (scroll & V2D_SCROLL_BOTTOM) {
-        /* on bottom edge of region */
-        v2d->vert.ymin = v2d->hor.ymax;
-      }
-      else if (scroll & V2D_SCROLL_TOP) {
-        /* on upper edge of region */
-        v2d->vert.ymax = v2d->hor.ymin;
-      }
-    }
-  }
-}
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name View2D Refresh and Validation (Spatial)
- * \{ */
-
-void UI_view2d_region_reinit(View2D *v2d, short type, int winx, int winy)
-{
-  bool tot_changed = false, do_init;
-  const uiStyle *style = UI_style_get();
-
-  do_init = (v2d->flag & V2D_IS_INIT) == 0;
-
-  /* see eView2D_CommonViewTypes in UI_view2d.h for available view presets */
-  switch (type) {
-    /* 'standard view' - optimum setup for 'standard' view behavior,
-     * that should be used new views as basis for their
-     * own unique View2D settings, which should be used instead of this in most cases...
-     */
-    case V2D_COMMONVIEW_STANDARD: {
-      /* for now, aspect ratio should be maintained,
-       * and zoom is clamped within sane default limits */
-      v2d->keepzoom = (V2D_KEEPASPECT | V2D_LIMITZOOM);
-      v2d->minzoom = 0.01f;
-      v2d->maxzoom = 1000.0f;
-
-      /* View2D tot rect and cur should be same size,
-       * and aligned using 'standard' OpenGL coordinates for now:
-       * - region can resize 'tot' later to fit other data
-       * - keeptot is only within bounds, as strict locking is not that critical
-       * - view is aligned for (0,0) -> (winx-1, winy-1) setup
-       */
-      v2d->align = (V2D_ALIGN_NO_NEG_X | V2D_ALIGN_NO_NEG_Y);
-      v2d->keeptot = V2D_KEEPTOT_BOUNDS;
-      if (do_init) {
-        v2d->tot.xmin = v2d->tot.ymin = 0.0f;
-        v2d->tot.xmax = (float)(winx - 1);
-        v2d->tot.ymax = (float)(winy - 1);
-
-        v2d->cur = v2d->tot;
-      }
-      /* scrollers - should we have these by default? */
-      /* XXX for now, we don't override this, or set it either! */
-      break;
-    }
-    /* 'list/channel view' - zoom, aspect ratio, and alignment restrictions are set here */
-    case V2D_COMMONVIEW_LIST: {
-      /* zoom + aspect ratio are locked */
-      v2d->keepzoom = (V2D_LOCKZOOM_X | V2D_LOCKZOOM_Y | V2D_LIMITZOOM | V2D_KEEPASPECT);
-      v2d->minzoom = v2d->maxzoom = 1.0f;
-
-      /* tot rect has strictly regulated placement, and must only occur in +/- quadrant */
-      v2d->align = (V2D_ALIGN_NO_NEG_X | V2D_ALIGN_NO_POS_Y);
-      v2d->keeptot = V2D_KEEPTOT_STRICT;
-      tot_changed = do_init;
-
-      /* scroller settings are currently not set here... that is left for regions... */
-      break;
-    }
-    /* 'stack view' - practically the same as list/channel view,
-     * except is located in the pos y half instead.
-     * Zoom, aspect ratio, and alignment restrictions are set here. */
-    case V2D_COMMONVIEW_STACK: {
-      /* zoom + aspect ratio are locked */
-      v2d->keepzoom = (V2D_LOCKZOOM_X | V2D_LOCKZOOM_Y | V2D_LIMITZOOM | V2D_KEEPASPECT);
-      v2d->minzoom = v2d->maxzoom = 1.0f;
-
-      /* tot rect has strictly regulated placement, and must only occur in +/+ quadrant */
-      v2d->align = (V2D_ALIGN_NO_NEG_X | V2D_ALIGN_NO_NEG_Y);
-      v2d->keeptot = V2D_KEEPTOT_STRICT;
-      tot_changed = do_init;
-
-      /* scroller settings are currently not set here... that is left for regions... */
-      break;
-    }
-    /* 'header' regions - zoom, aspect ratio,
-     * alignment, and panning restrictions are set here */
-    case V2D_COMMONVIEW_HEADER: {
-      /* zoom + aspect ratio are locked */
-      v2d->keepzoom = (V2D_LOCKZOOM_X | V2D_LOCKZOOM_Y | V2D_LIMITZOOM | V2D_KEEPASPECT);
-      v2d->minzoom = v2d->maxzoom = 1.0f;
-
-      if (do_init) {
-        v2d->tot.xmin = 0.0f;
-        v2d->tot.xmax = winx;
-        v2d->tot.ymin = 0.0f;
-        v2d->tot.ymax = winy;
-        v2d->cur = v2d->tot;
-
-        v2d->min[0] = v2d->max[0] = (float)(winx - 1);
-        v2d->min[1] = v2d->max[1] = (float)(winy - 1);
-      }
-      /* tot rect has strictly regulated placement, and must only occur in +/+ quadrant */
-      v2d->align = (V2D_ALIGN_NO_NEG_X | V2D_ALIGN_NO_NEG_Y);
-      v2d->keeptot = V2D_KEEPTOT_STRICT;
-      tot_changed = do_init;
-
-      /* panning in y-axis is prohibited */
-      v2d->keepofs = V2D_LOCKOFS_Y;
-
-      /* absolutely no scrollers allowed */
-      v2d->scroll = 0;
-      break;
-    }
-    /* panels view, with horizontal/vertical align */
-    case V2D_COMMONVIEW_PANELS_UI: {
-
-      /* for now, aspect ratio should be maintained,
-       * and zoom is clamped within sane default limits */
-      v2d->keepzoom = (V2D_KEEPASPECT | V2D_LIMITZOOM | V2D_KEEPZOOM);
-      v2d->minzoom = 0.5f;
-      v2d->maxzoom = 2.0f;
-
-      v2d->align = (V2D_ALIGN_NO_NEG_X | V2D_ALIGN_NO_POS_Y);
-      v2d->keeptot = V2D_KEEPTOT_BOUNDS;
-
-      /* NOTE: scroll is being flipped in #ED_region_panels() drawing. */
-      v2d->scroll |= (V2D_SCROLL_HORIZONTAL_HIDE | V2D_SCROLL_VERTICAL_HIDE);
-
-      if (do_init) {
-        const float panelzoom = (style) ? style->panelzoom : 1.0f;
-
-        v2d->tot.xmin = 0.0f;
-        v2d->tot.xmax = winx;
-
-        v2d->tot.ymax = 0.0f;
-        v2d->tot.ymin = -winy;
-
-        v2d->cur.xmin = 0.0f;
-        v2d->cur.xmax = (winx)*panelzoom;
-
-        v2d->cur.ymax = 0.0f;
-        v2d->cur.ymin = (-winy) * panelzoom;
-      }
-      break;
-    }
-    /* other view types are completely defined using their own settings already */
-    default:
-      /* we don't do anything here,
-       * as settings should be fine, but just make sure that rect */
-      break;
-  }
-
-  /* set initialized flag so that View2D doesn't get reinitialized next time again */
-  v2d->flag |= V2D_IS_INIT;
-
-  /* store view size */
-  v2d->winx = winx;
-  v2d->winy = winy;
-
-  view2d_masks(v2d, NULL);
-
-  if (do_init) {
-    /* Visible by default. */
-    v2d->alpha_hor = v2d->alpha_vert = 255;
-  }
-
-  /* set 'tot' rect before setting cur? */
-  /* XXX confusing stuff here still */
-  if (tot_changed) {
-    UI_view2d_totRect_set_resize(v2d, winx, winy, !do_init);
-  }
-  else {
-    ui_view2d_curRect_validate_resize(v2d, !do_init);
-  }
-}
-
-/**
- * Ensure View2D rects remain in a viable configuration
- * 'cur' is not allowed to be: larger than max, smaller than min, or outside of 'tot'
- */
-/* XXX pre2.5 -> this used to be called  test_view2d() */
-static void ui_view2d_curRect_validate_resize(View2D *v2d, bool resize)
-{
-  float totwidth, totheight, curwidth, curheight, width, height;
-  float winx, winy;
-  rctf *cur, *tot;
-
-  /* use mask as size of region that View2D resides in, as it takes into account
-   * scrollbars already - keep in sync with zoomx/zoomy in view_zoomstep_apply_ex! */
-  winx = (float)(BLI_rcti_size_x(&v2d->mask) + 1);
-  winy = (float)(BLI_rcti_size_y(&v2d->mask) + 1);
-
-  /* get pointers to rcts for less typing */
-  cur = &v2d->cur;
-  tot = &v2d->tot;
-
-  /* we must satisfy the following constraints (in decreasing order of importance):
-   * - alignment restrictions are respected
-   * - cur must not fall outside of tot
-   * - axis locks (zoom and offset) must be maintained
-   * - zoom must not be excessive (check either sizes or zoom values)
-   * - aspect ratio should be respected (NOTE: this is quite closely related to zoom too)
-   */
-
-  /* Step 1: if keepzoom, adjust the sizes of the rects only
-   * - firstly, we calculate the sizes of the rects
-   * - curwidth and curheight are saved as reference... modify width and height values here
-   */
-  totwidth = BLI_rctf_size_x(tot);
-  totheight = BLI_rctf_size_y(tot);
-  /* keep in sync with zoomx/zoomy in view_zoomstep_apply_ex! */
-  curwidth = width = BLI_rctf_size_x(cur);
-  curheight = height = BLI_rctf_size_y(cur);
-
-  /* if zoom is locked, size on the appropriate axis is reset to mask size */
-  if (v2d->keepzoom & V2D_LOCKZOOM_X) {
-    width = winx;
-  }
-  if (v2d->keepzoom & V2D_LOCKZOOM_Y) {
-    height = winy;
-  }
-
-  /* values used to divide, so make it safe
-   * NOTE: width and height must use FLT_MIN instead of 1, otherwise it is impossible to
-   *       get enough resolution in Graph Editor for editing some curves
-   */
-  if (width < FLT_MIN) {
-    width = 1;
-  }
-  if (height < FLT_MIN) {
-    height = 1;
-  }
-  if (winx < 1) {
-    winx = 1;
-  }
-  if (winy < 1) {
-    winy = 1;
-  }
-
-  /* V2D_LIMITZOOM indicates that zoom level should be preserved when the window size changes */
-  if (resize && (v2d->keepzoom & V2D_KEEPZOOM)) {
-    float zoom, oldzoom;
-
-    if ((v2d->keepzoom & V2D_LOCKZOOM_X) == 0) {
-      zoom = winx / width;
-      oldzoom = v2d->oldwinx / curwidth;
-
-      if (oldzoom != zoom) {
-        width *= zoom / oldzoom;
-      }
-    }
-
-    if ((v2d->keepzoom & V2D_LOCKZOOM_Y) == 0) {
-      zoom = winy / height;
-      oldzoom = v2d->oldwiny / curheight;
-
-      if (oldzoom != zoom) {
-        height *= zoom / oldzoom;
-      }
-    }
-  }
-  /* keepzoom (V2D_LIMITZOOM set), indicates that zoom level on each axis must not exceed limits
-   * NOTE: in general, it is not expected that the lock-zoom will be used in conjunction with this
-   */
-  else if (v2d->keepzoom & V2D_LIMITZOOM) {
-
-    /* check if excessive zoom on x-axis */
-    if ((v2d->keepzoom & V2D_LOCKZOOM_X) == 0) {
-      const float zoom = winx / width;
-      if (zoom < v2d->minzoom) {
-        width = winx / v2d->minzoom;
-      }
-      else if (zoom > v2d->maxzoom) {
-        width = winx / v2d->maxzoom;
-      }
-    }
-
-    /* check if excessive zoom on y-axis */
-    if ((v2d->keepzoom & V2D_LOCKZOOM_Y) == 0) {
-      const float zoom = winy / height;
-      if (zoom < v2d->minzoom) {
-        height = winy / v2d->minzoom;
-      }
-      else if (zoom > v2d->maxzoom) {
-        height = winy / v2d->maxzoom;
-      }
-    }
-  }
-  else {
-    /* make sure sizes don't exceed that of the min/max sizes
-     * (even though we're not doing zoom clamping) */
-    CLAMP(width, v2d->min[0], v2d->max[0]);
-    CLAMP(height, v2d->min[1], v2d->max[1]);
-  }
-
-  /* check if we should restore aspect ratio (if view size changed) */
-  if (v2d->keepzoom & V2D_KEEPASPECT) {
-    bool do_x = false, do_y = false, do_cur /* , do_win */ /* UNUSED */;
-    float curRatio, winRatio;
-
-    /* when a window edge changes, the aspect ratio can't be used to
-     * find which is the best new 'cur' rect. that's why it stores 'old'
-     */
-    if (winx != v2d->oldwinx) {
-      do_x = true;
-    }
-    if (winy != v2d->oldwiny) {
-      do_y = true;
-    }
-
-    curRatio = height / width;
-    winRatio = winy / winx;
-
-    /* Both sizes change (area/region maximized). */
-    if (do_x == do_y) {
-      if (do_x && do_y) {
-        /* here is 1,1 case, so all others must be 0,0 */
-        if (fabsf(winx - v2d->oldwinx) > fabsf(winy - v2d->oldwiny)) {
-          do_y = false;
-        }
-        else {
-          do_x = false;
-        }
-      }
-      else if (winRatio > curRatio) {
-        do_x = false;
-      }
-      else {
-        do_x = true;
-      }
-    }
-    do_cur = do_x;
-    /* do_win = do_y; */ /* UNUSED */
-
-    if (do_cur) {
-      if ((v2d->keeptot == V2D_KEEPTOT_STRICT) && (winx != v2d->oldwinx)) {
-        /* Special exception for Outliner (and later channel-lists):
-         * - The view may be moved left to avoid contents
-         *   being pushed out of view when view shrinks.
-         * - The keeptot code will make sure cur->xmin will not be less than tot->xmin
-         *   (which cannot be allowed).
-         * - width is not adjusted for changed ratios here.
-         */
-        if (winx < v2d->oldwinx) {
-          const float temp = v2d->oldwinx - winx;
-
-          cur->xmin -= temp;
-          cur->xmax -= temp;
-
-          /* width does not get modified, as keepaspect here is just set to make
-           * sure visible area adjusts to changing view shape!
-           */
-        }
-      }
-      else {
-        /* portrait window: correct for x */
-        width = height / winRatio;
-      }
-    }
-    else {
-      if ((v2d->keeptot == V2D_KEEPTOT_STRICT) && (winy != v2d->oldwiny)) {
-        /* special exception for Outliner (and later channel-lists):
-         * - Currently, no actions need to be taken here...
-         */
-
-        if (winy < v2d->oldwiny) {
-          const float temp = v2d->oldwiny - winy;
-
-          if (v2d->align & V2D_ALIGN_NO_NEG_Y) {
-            cur->ymin -= temp;
-            cur->ymax -= temp;
-          }
-          else { /* Assume V2D_ALIGN_NO_POS_Y or combination */
-            cur->ymin += temp;
-            cur->ymax += temp;
-          }
-        }
-      }
-      else {
-        /* landscape window: correct for y */
-        height = width * winRatio;
-      }
-    }
-
-    /* store region size for next time */
-    v2d->oldwinx = (short)winx;
-    v2d->oldwiny = (short)winy;
-  }
-
-  /* Step 2: apply new sizes to cur rect,
-   * but need to take into account alignment settings here... */
-  if ((width != curwidth) || (height != curheight)) {
-    float temp, dh;
-
-    /* Resize from center-point, unless otherwise specified. */
-    if (width != curwidth) {
-      if (v2d->keepofs & V2D_LOCKOFS_X) {
-        cur->xmax += width - BLI_rctf_size_x(cur);
-      }
-      else if (v2d->keepofs & V2D_KEEPOFS_X) {
-        if (v2d->align & V2D_ALIGN_NO_POS_X) {
-          cur->xmin -= width - BLI_rctf_size_x(cur);
-        }
-        else {
-          cur->xmax += width - BLI_rctf_size_x(cur);
-        }
-      }
-      else {
-        temp = BLI_rctf_cent_x(cur);
-        dh = width * 0.5f;
-
-        cur->xmin = temp - dh;
-        cur->xmax = temp + dh;
-      }
-    }
-    if (height != curheight) {
-      if (v2d->keepofs & V2D_LOCKOFS_Y) {
-        cur->ymax += height - BLI_rctf_size_y(cur);
-      }
-      else if (v2d->keepofs & V2D_KEEPOFS_Y) {
-        if (v2d->align & V2D_ALIGN_NO_POS_Y) {
-          cur->ymin -= height - BLI_rctf_size_y(cur);
-        }
-        else {
-          cur->ymax += height - BLI_rctf_size_y(cur);
-        }
-      }
-      else {
-        temp = BLI_rctf_cent_y(cur);
-        dh = height * 0.5f;
-
-        cur->ymin = temp - dh;
-        cur->ymax = temp + dh;
-      }
-    }
-  }
-
-  /* Step 3: adjust so that it doesn't fall outside of bounds of 'tot' */
-  if (v2d->keeptot) {
-    float temp, diff;
-
-    /* recalculate extents of cur */
-    curwidth = BLI_rctf_size_x(cur);
-    curheight = BLI_rctf_size_y(cur);
-
-    /* width */
-    if ((curwidth > totwidth) &&
-        !(v2d->keepzoom & (V2D_KEEPZOOM | V2D_LOCKZOOM_X | V2D_LIMITZOOM))) {
-      /* if zoom doesn't have to be maintained, just clamp edges */
-      if (cur->xmin < tot->xmin) {
-        cur->xmin = tot->xmin;
-      }
-      if (cur->xmax > tot->xmax) {
-        cur->xmax = tot->xmax;
-      }
-    }
-    else if (v2d->keeptot == V2D_KEEPTOT_STRICT) {
-      /* This is an exception for the outliner (and later channel-lists, headers)
-       * - must clamp within tot rect (absolutely no excuses)
-       * --> therefore, cur->xmin must not be less than tot->xmin
-       */
-      if (cur->xmin < tot->xmin) {
-        /* move cur across so that it sits at minimum of tot */
-        temp = tot->xmin - cur->xmin;
-
-        cur->xmin += temp;
-        cur->xmax += temp;
-      }
-      else if (cur->xmax > tot->xmax) {
-        /* - only offset by difference of cur-xmax and tot-xmax if that would not move
-         *   cur-xmin to lie past tot-xmin
-         * - otherwise, simply shift to tot-xmin???
-         */
-        temp = cur->xmax - tot->xmax;
-
-        if ((cur->xmin - temp) < tot->xmin) {
-          /* only offset by difference from cur-min and tot-min */
-          temp = cur->xmin - tot->xmin;
-
-          cur->xmin -= temp;
-          cur->xmax -= temp;
-        }
-        else {
-          cur->xmin -= temp;
-          cur->xmax -= temp;
-        }
-      }
-    }
-    else {
-      /* This here occurs when:
-       * - width too big, but maintaining zoom (i.e. widths cannot be changed)
-       * - width is OK, but need to check if outside of boundaries
-       *
-       * So, resolution is to just shift view by the gap between the extremities.
-       * We favor moving the 'minimum' across, as that's origin for most things.
-       * (XXX: in the past, max was favored... if there are bugs, swap!)
-       */
-      if ((cur->xmin < tot->xmin) && (cur->xmax > tot->xmax)) {
-        /* outside boundaries on both sides,
-         * so take middle-point of tot, and place in balanced way */
-        temp = BLI_rctf_cent_x(tot);
-        diff = curwidth * 0.5f;
-
-        cur->xmin = temp - diff;
-        cur->xmax = temp + diff;
-      }
-      else if (cur->xmin < tot->xmin) {
-        /* move cur across so that it sits at minimum of tot */
-        temp = tot->xmin - cur->xmin;
-
-        cur->xmin += temp;
-        cur->xmax += temp;
-      }
-      else if (cur->xmax > tot->xmax) {
-        /* - only offset by difference of cur-xmax and tot-xmax if that would not move
-         *   cur-xmin to lie past tot-xmin
-         * - otherwise, simply shift to tot-xmin???
-         */
-        temp = cur->xmax - tot->xmax;
-
-        if ((cur->xmin - temp) < tot->xmin) {
-          /* only offset by difference from cur-min and tot-min */
-          temp = cur->xmin - tot->xmin;
-
-          cur->xmin -= temp;
-          cur->xmax -= temp;
-        }
-        else {
-          cur->xmin -= temp;
-          cur->xmax -= temp;
-        }
-      }
-    }
-
-    /* height */
-    if ((curheight > totheight) &&
-        !(v2d->keepzoom & (V2D_KEEPZOOM | V2D_LOCKZOOM_Y | V2D_LIMITZOOM))) {
-      /* if zoom doesn't have to be maintained, just clamp edges */
-      if (cur->ymin < tot->ymin) {
-        cur->ymin = tot->ymin;
-      }
-      if (cur->ymax > tot->ymax) {
-        cur->ymax = tot->ymax;
-      }
-    }
-    else {
-      /* This here occurs when:
-       * - height too big, but maintaining zoom (i.e. heights cannot be changed)
-       * - height is OK, but need to check if outside of boundaries
-       *
-       * So, resolution is to just shift view by the gap between the extremities.
-       * We favor moving the 'minimum' across, as that's origin for most things.
-       */
-      if ((cur->ymin < tot->ymin) && (cur->ymax > tot->ymax)) {
-        /* outside boundaries on both sides,
-         * so take middle-point of tot, and place in balanced way */
-        temp = BLI_rctf_cent_y(tot);
-        diff = curheight * 0.5f;
-
-        cur->ymin = temp - diff;
-        cur->ymax = temp + diff;
-      }
-      else if (cur->ymin < tot->ymin) {
-        /* there's still space remaining, so shift up */
-        temp = tot->ymin - cur->ymin;
-
-        cur->ymin += temp;
-        cur->ymax += temp;
-      }
-      else if (cur->ymax > tot->ymax) {
-        /* there's still space remaining, so shift down */
-        temp = cur->ymax - tot->ymax;
-
-        cur->ymin -= temp;
-        cur->ymax -= temp;
-      }
-    }
-  }
-
-  /* Step 4: Make sure alignment restrictions are respected */
-  if (v2d->align) {
-    /* If alignment flags are set (but keeptot is not), they must still be respected, as although
-     * they don't specify any particular bounds to stay within, they do define ranges which are
-     * invalid.
-     *
-     * Here, we only check to make sure that on each axis, the 'cur' rect doesn't stray into these
-     * invalid zones, otherwise we offset.
-     */
-
-    /* handle width - posx and negx flags are mutually exclusive, so watch out */
-    if ((v2d->align & V2D_ALIGN_NO_POS_X) && !(v2d->align & V2D_ALIGN_NO_NEG_X)) {
-      /* width is in negative-x half */
-      if (v2d->cur.xmax > 0) {
-        v2d->cur.xmin -= v2d->cur.xmax;
-        v2d->cur.xmax = 0.0f;
-      }
-    }
-    else if ((v2d->align & V2D_ALIGN_NO_NEG_X) && !(v2d->align & V2D_ALIGN_NO_POS_X)) {
-      /* width is in positive-x half */
-      if (v2d->cur.xmin < 0) {
-        v2d->cur.xmax -= v2d->cur.xmin;
-        v2d->cur.xmin = 0.0f;
-      }
-    }
-
-    /* handle height - posx and negx flags are mutually exclusive, so watch out */
-    if ((v2d->align & V2D_ALIGN_NO_POS_Y) && !(v2d->align & V2D_ALIGN_NO_NEG_Y)) {
-      /* height is in negative-y half */
-      if (v2d->cur.ymax > 0) {
-        v2d->cur.ymin -= v2d->cur.ymax;
-        v2d->cur.ymax = 0.0f;
-      }
-    }
-    else if ((v2d->align & V2D_ALIGN_NO_NEG_Y) && !(v2d->align & V2D_ALIGN_NO_POS_Y)) {
-      /* height is in positive-y half */
-      if (v2d->cur.ymin < 0) {
-        v2d->cur.ymax -= v2d->cur.ymin;
-        v2d->cur.ymin = 0.0f;
-      }
-    }
-  }
-
-  /* set masks */
-  view2d_masks(v2d, NULL);
-}
-
-void UI_view2d_curRect_validate(View2D *v2d)
-{
-  ui_view2d_curRect_validate_resize(v2d, false);
-}
-
-void UI_view2d_curRect_changed(const bContext *C, View2D *v2d)
-{
-  UI_view2d_curRect_validate(v2d);
-
-  ARegion *region = CTX_wm_region(C);
-
-  if (region->type->on_view2d_changed != NULL) {
-    region->type->on_view2d_changed(C, region);
-  }
-}
-
-/* ------------------ */
-
-bool UI_view2d_area_supports_sync(ScrArea *area)
-{
-  return ELEM(area->spacetype, SPACE_ACTION, SPACE_NLA, SPACE_SEQ, SPACE_CLIP, SPACE_GRAPH);
-}
-
-void UI_view2d_sync(bScreen *screen, ScrArea *area, View2D *v2dcur, int flag)
-{
-  /* don't continue if no view syncing to be done */
-  if ((v2dcur->flag & (V2D_VIEWSYNC_SCREEN_TIME | V2D_VIEWSYNC_AREA_VERTICAL)) == 0) {
-    return;
-  }
-
-  /* check if doing within area syncing (i.e. channels/vertical) */
-  if ((v2dcur->flag & V2D_VIEWSYNC_AREA_VERTICAL) && (area)) {
-    LISTBASE_FOREACH (ARegion *, region, &area->regionbase) {
-      /* don't operate on self */
-      if (v2dcur != &region->v2d) {
-        /* only if view has vertical locks enabled */
-        if (region->v2d.flag & V2D_VIEWSYNC_AREA_VERTICAL) {
-          if (flag == V2D_LOCK_COPY) {
-            /* other views with locks on must copy active */
-            region->v2d.cur.ymin = v2dcur->cur.ymin;
-            region->v2d.cur.ymax = v2dcur->cur.ymax;
-          }
-          else { /* V2D_LOCK_SET */
-                 /* active must copy others */
-            v2dcur->cur.ymin = region->v2d.cur.ymin;
-            v2dcur->cur.ymax = region->v2d.cur.ymax;
-          }
-
-          /* region possibly changed, so refresh */
-          ED_region_tag_redraw_no_rebuild(region);
-        }
-      }
-    }
-  }
-
-  /* check if doing whole screen syncing (i.e. time/horizontal) */
-  if ((v2dcur->flag & V2D_VIEWSYNC_SCREEN_TIME) && (screen)) {
-    LISTBASE_FOREACH (ScrArea *, area_iter, &screen->areabase) {
-      if (!UI_view2d_area_supports_sync(area_iter)) {
-        continue;
-      }
-      LISTBASE_FOREACH (ARegion *, region, &area_iter->regionbase) {
-        /* don't operate on self */
-        if (v2dcur != &region->v2d) {
-          /* only if view has horizontal locks enabled */
-          if (region->v2d.flag & V2D_VIEWSYNC_SCREEN_TIME) {
-            if (flag == V2D_LOCK_COPY) {
-              /* other views with locks on must copy active */
-              region->v2d.cur.xmin = v2dcur->cur.xmin;
-              region->v2d.cur.xmax = v2dcur->cur.xmax;
-            }
-            else { /* V2D_LOCK_SET */
-                   /* active must copy others */
-              v2dcur->cur.xmin = region->v2d.cur.xmin;
-              v2dcur->cur.xmax = region->v2d.cur.xmax;
-            }
-
-            /* region possibly changed, so refresh */
-            ED_region_tag_redraw_no_rebuild(region);
-          }
-        }
-      }
-    }
-  }
-}
-
-void UI_view2d_curRect_reset(View2D *v2d)
-{
-  float width, height;
-
-  /* assume width and height of 'cur' rect by default, should be same size as mask */
-  width = (float)(BLI_rcti_size_x(&v2d->mask) + 1);
-  height = (float)(BLI_rcti_size_y(&v2d->mask) + 1);
-
-  /* handle width - posx and negx flags are mutually exclusive, so watch out */
-  if ((v2d->align & V2D_ALIGN_NO_POS_X) && !(v2d->align & V2D_ALIGN_NO_NEG_X)) {
-    /* width is in negative-x half */
-    v2d->cur.xmin = -width;
-    v2d->cur.xmax = 0.0f;
-  }
-  else if ((v2d->align & V2D_ALIGN_NO_NEG_X) && !(v2d->align & V2D_ALIGN_NO_POS_X)) {
-    /* width is in positive-x half */
-    v2d->cur.xmin = 0.0f;
-    v2d->cur.xmax = width;
-  }
-  else {
-    /* width is centered around (x == 0) */
-    const float dx = width / 2.0f;
-
-    v2d->cur.xmin = -dx;
-    v2d->cur.xmax = dx;
-  }
-
-  /* handle height - posx and negx flags are mutually exclusive, so watch out */
-  if ((v2d->align & V2D_ALIGN_NO_POS_Y) && !(v2d->align & V2D_ALIGN_NO_NEG_Y)) {
-    /* height is in negative-y half */
-    v2d->cur.ymin = -height;
-    v2d->cur.ymax = 0.0f;
-  }
-  else if ((v2d->align & V2D_ALIGN_NO_NEG_Y) && !(v2d->align & V2D_ALIGN_NO_POS_Y)) {
-    /* height is in positive-y half */
-    v2d->cur.ymin = 0.0f;
-    v2d->cur.ymax = height;
-  }
-  else {
-    /* height is centered around (y == 0) */
-    const float dy = height / 2.0f;
-
-    v2d->cur.ymin = -dy;
-    v2d->cur.ymax = dy;
-  }
-}
-
-/* ------------------ */
-
-void UI_view2d_totRect_set_resize(View2D *v2d, int width, int height, bool resize)
-{
-  /* don't do anything if either value is 0 */
-  width = abs(width);
-  height = abs(height);
-
-  if (ELEM(0, width, height)) {
-    if (G.debug & G_DEBUG) {
-      /* XXX: temp debug info. */
-      printf("Error: View2D totRect set exiting: v2d=%p width=%d height=%d\n",
-             (void *)v2d,
-             width,
-             height);
-    }
-    return;
-  }
-
-  /* handle width - posx and negx flags are mutually exclusive, so watch out */
-  if ((v2d->align & V2D_ALIGN_NO_POS_X) && !(v2d->align & V2D_ALIGN_NO_NEG_X)) {
-    /* width is in negative-x half */
-    v2d->tot.xmin = (float)-width;
-    v2d->tot.xmax = 0.0f;
-  }
-  else if ((v2d->align & V2D_ALIGN_NO_NEG_X) && !(v2d->align & V2D_ALIGN_NO_POS_X)) {
-    /* width is in positive-x half */
-    v2d->tot.xmin = 0.0f;
-    v2d->tot.xmax = (float)width;
-  }
-  else {
-    /* width is centered around (x == 0) */
-    const float dx = (float)width / 2.0f;
-
-    v2d->tot.xmin = -dx;
-    v2d->tot.xmax = dx;
-  }
-
-  /* handle height - posx and negx flags are mutually exclusive, so watch out */
-  if ((v2d->align & V2D_ALIGN_NO_POS_Y) && !(v2d->align & V2D_ALIGN_NO_NEG_Y)) {
-    /* height is in negative-y half */
-    v2d->tot.ymin = (float)-height;
-    v2d->tot.ymax = 0.0f;
-  }
-  else if ((v2d->align & V2D_ALIGN_NO_NEG_Y) && !(v2d->align & V2D_ALIGN_NO_POS_Y)) {
-    /* height is in positive-y half */
-    v2d->tot.ymin = 0.0f;
-    v2d->tot.ymax = (float)height;
-  }
-  else {
-    /* height is centered around (y == 0) */
-    const float dy = (float)height / 2.0f;
-
-    v2d->tot.ymin = -dy;
-    v2d->tot.ymax = dy;
-  }
-
-  /* make sure that 'cur' rect is in a valid state as a result of these changes */
-  ui_view2d_curRect_validate_resize(v2d, resize);
-}
-
-void UI_view2d_totRect_set(View2D *v2d, int width, int height)
-{
-  UI_view2d_totRect_set_resize(v2d, width, height, false);
-}
-
-void UI_view2d_zoom_cache_reset(void)
-{
-  /* TODO(sergey): This way we avoid threading conflict with sequencer rendering
-   * text strip. But ideally we want to make glyph cache to be fully safe
-   * for threading.
-   */
-  if (G.is_rendering) {
-    return;
-  }
-  /* While scaling we can accumulate fonts at many sizes (~20 or so).
-   * Not an issue with embedded font, but can use over 500Mb with i18n ones! See T38244. */
-
-  /* NOTE: only some views draw text, we could check for this case to avoid cleaning cache. */
-  BLF_cache_clear();
-}
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name View2D Matrix Setup
- * \{ */
-
-/* mapping function to ensure 'cur' draws extended over the area where sliders are */
-static void view2d_map_cur_using_mask(const View2D *v2d, rctf *r_curmasked)
-{
-  *r_curmasked = v2d->cur;
-
-  if (view2d_scroll_mapped(v2d->scroll)) {
-    const float sizex = BLI_rcti_size_x(&v2d->mask);
-    const float sizey = BLI_rcti_size_y(&v2d->mask);
-
-    /* prevent tiny or narrow regions to get
-     * invalid coordinates - mask can get negative even... */
-    if (sizex > 0.0f && sizey > 0.0f) {
-      const float dx = BLI_rctf_size_x(&v2d->cur) / (sizex + 1);
-      const float dy = BLI_rctf_size_y(&v2d->cur) / (sizey + 1);
-
-      if (v2d->mask.xmin != 0) {
-        r_curmasked->xmin -= dx * (float)v2d->mask.xmin;
-      }
-      if (v2d->mask.xmax + 1 != v2d->winx) {
-        r_curmasked->xmax += dx * (float)(v2d->winx - v2d->mask.xmax - 1);
-      }
-
-      if (v2d->mask.ymin != 0) {
-        r_curmasked->ymin -= dy * (float)v2d->mask.ymin;
-      }
-      if (v2d->mask.ymax + 1 != v2d->winy) {
-        r_curmasked->ymax += dy * (float)(v2d->winy - v2d->mask.ymax - 1);
-      }
-    }
-  }
-}
-
-void UI_view2d_view_ortho(const View2D *v2d)
-{
-  rctf curmasked;
-  const int sizex = BLI_rcti_size_x(&v2d->mask);
-  const int sizey = BLI_rcti_size_y(&v2d->mask);
-  const float eps = 0.001f;
-  float xofs = 0.0f, yofs = 0.0f;
-
-  /* Pixel offsets (-GLA_PIXEL_OFS) are needed to get 1:1
-   * correspondence with pixels for smooth UI drawing,
-   * but only applied where requested.
-   */
-  /* XXX brecht: instead of zero at least use a tiny offset, otherwise
-   * pixel rounding is effectively random due to float inaccuracy */
-  if (sizex > 0) {
-    xofs = eps * BLI_rctf_size_x(&v2d->cur) / sizex;
-  }
-  if (sizey > 0) {
-    yofs = eps * BLI_rctf_size_y(&v2d->cur) / sizey;
-  }
-
-  /* apply mask-based adjustments to cur rect (due to scrollers),
-   * to eliminate scaling artifacts */
-  view2d_map_cur_using_mask(v2d, &curmasked);
-
-  BLI_rctf_translate(&curmasked, -xofs, -yofs);
-
-  /* XXX ton: this flag set by outliner, for icons */
-  if (v2d->flag & V2D_PIXELOFS_X) {
-    curmasked.xmin = floorf(curmasked.xmin) - (eps + xofs);
-    curmasked.xmax = floorf(curmasked.xmax) - (eps + xofs);
-  }
-  if (v2d->flag & V2D_PIXELOFS_Y) {
-    curmasked.ymin = floorf(curmasked.ymin) - (eps + yofs);
-    curmasked.ymax = floorf(curmasked.ymax) - (eps + yofs);
-  }
-
-  /* set matrix on all appropriate axes */
-  wmOrtho2(curmasked.xmin, curmasked.xmax, curmasked.ymin, curmasked.ymax);
-}
-
-void UI_view2d_view_orthoSpecial(ARegion *region, View2D *v2d, const bool xaxis)
-{
-  rctf curmasked;
-  float xofs, yofs;
-
-  /* Pixel offsets (-GLA_PIXEL_OFS) are needed to get 1:1
-   * correspondence with pixels for smooth UI drawing,
-   * but only applied where requested.
-   */
-  /* XXX(ton): temp. */
-  xofs = 0.0f;  // (v2d->flag & V2D_PIXELOFS_X) ? GLA_PIXEL_OFS : 0.0f;
-  yofs = 0.0f;  // (v2d->flag & V2D_PIXELOFS_Y) ? GLA_PIXEL_OFS : 0.0f;
-
-  /* apply mask-based adjustments to cur rect (due to scrollers),
-   * to eliminate scaling artifacts */
-  view2d_map_cur_using_mask(v2d, &curmasked);
-
-  /* only set matrix with 'cur' coordinates on relevant axes */
-  if (xaxis) {
-    wmOrtho2(curmasked.xmin - xofs, curmasked.xmax - xofs, -yofs, region->winy - yofs);
-  }
-  else {
-    wmOrtho2(-xofs, region->winx - xofs, curmasked.ymin - yofs, curmasked.ymax - yofs);
-  }
-}
-
-void UI_view2d_view_restore(const bContext *C)
-{
-  ARegion *region = CTX_wm_region(C);
-  const int width = BLI_rcti_size_x(&region->winrct) + 1;
-  const int height = BLI_rcti_size_y(&region->winrct) + 1;
-
-  wmOrtho2(0.0f, (float)width, 0.0f, (float)height);
-  GPU_matrix_identity_set();
-
-  //  ED_region_pixelspace(CTX_wm_region(C));
-}
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name Grid-Line Drawing
- * \{ */
-
-void UI_view2d_multi_grid_draw(
-    const View2D *v2d, int colorid, float step, int level_size, int totlevels)
-{
-  /* Exit if there is nothing to draw */
-  if (totlevels == 0) {
-    return;
-  }
-
-  int offset = -10;
-  float lstep = step;
-  uchar grid_line_color[3];
-
-  /* Make an estimate of at least how many vertices will be needed */
-  uint vertex_count = 4;
-  vertex_count += 2 * ((int)((v2d->cur.xmax - v2d->cur.xmin) / lstep) + 1);
-  vertex_count += 2 * ((int)((v2d->cur.ymax - v2d->cur.ymin) / lstep) + 1);
-
-  GPUVertFormat *format = immVertexFormat();
-  const uint pos = GPU_vertformat_attr_add(format, "pos", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
-  uint color = GPU_vertformat_attr_add(
-      format, "color", GPU_COMP_U8, 3, GPU_FETCH_INT_TO_FLOAT_UNIT);
-
-  GPU_line_width(1.0f);
-
-  immBindBuiltinProgram(GPU_SHADER_2D_FLAT_COLOR);
-  immBeginAtMost(GPU_PRIM_LINES, vertex_count);
-
-  for (int level = 0; level < totlevels; level++) {
-    /* Blend the background color (colorid) with the grid color, to avoid either too low contrast
-     * or high contrast grid lines. This only has an effect if colorid != TH_GRID. */
-    UI_GetThemeColorBlendShade3ubv(colorid, TH_GRID, 0.25f, offset, grid_line_color);
-
-    int i = (int)(v2d->cur.xmin / lstep);
-    if (v2d->cur.xmin > 0.0f) {
-      i++;
-    }
-    float start = i * lstep;
-
-    for (; start < v2d->cur.xmax; start += lstep, i++) {
-      if (i == 0 || (level < totlevels - 1 && i % level_size == 0)) {
-        continue;
-      }
-
-      immAttrSkip(color);
-      immVertex2f(pos, start, v2d->cur.ymin);
-      immAttr3ubv(color, grid_line_color);
-      immVertex2f(pos, start, v2d->cur.ymax);
-    }
-
-    i = (int)(v2d->cur.ymin / lstep);
-    if (v2d->cur.ymin > 0.0f) {
-      i++;
-    }
-    start = i * lstep;
-
-    for (; start < v2d->cur.ymax; start += lstep, i++) {
-      if (i == 0 || (level < totlevels - 1 && i % level_size == 0)) {
-        continue;
-      }
-
-      immAttrSkip(color);
-      immVertex2f(pos, v2d->cur.xmin, start);
-      immAttr3ubv(color, grid_line_color);
-      immVertex2f(pos, v2d->cur.xmax, start);
-    }
-
-    lstep *= level_size;
-    offset -= 6;
-  }
-
-  /* X and Y axis */
-  UI_GetThemeColorBlendShade3ubv(
-      colorid, TH_GRID, 0.5f, -18 + ((totlevels - 1) * -6), grid_line_color);
-
-  immAttrSkip(color);
-  immVertex2f(pos, 0.0f, v2d->cur.ymin);
-  immAttr3ubv(color, grid_line_color);
-  immVertex2f(pos, 0.0f, v2d->cur.ymax);
-
-  immAttrSkip(color);
-  immVertex2f(pos, v2d->cur.xmin, 0.0f);
-  immAttr3ubv(color, grid_line_color);
-  immVertex2f(pos, v2d->cur.xmax, 0.0f);
-
-  immEnd();
-  immUnbindProgram();
-}
-
-static void grid_axis_start_and_count(
-    const float step, const float min, const float max, float *r_start, int *r_count)
-{
-  *r_start = min;
-  if (*r_start < 0.0f) {
-    *r_start += -(float)fmod(min, step);
-  }
-  else {
-    *r_start += step - (float)fabs(fmod(min, step));
-  }
-
-  if (*r_start > max) {
-    *r_count = 0;
-  }
-  else {
-    *r_count = (max - *r_start) / step + 1;
-  }
-}
-
-void UI_view2d_dot_grid_draw(const View2D *v2d,
-                             const int grid_color_id,
-                             const float min_step,
-                             const int grid_subdivisions)
-{
-  BLI_assert(grid_subdivisions >= 0 && grid_subdivisions < 4);
-  if (grid_subdivisions == 0) {
-    return;
-  }
-
-  const float zoom_x = (float)(BLI_rcti_size_x(&v2d->mask) + 1) / BLI_rctf_size_x(&v2d->cur);
-
-  GPUVertFormat *format = immVertexFormat();
-  const uint pos = GPU_vertformat_attr_add(format, "pos", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
-  const uint color_id = GPU_vertformat_attr_add(format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT);
-  immBindBuiltinProgram(GPU_SHADER_2D_FLAT_COLOR);
-
-  /* Scaling the dots fully with the zoom looks too busy, but a bit of size variation is nice. */
-  const float min_point_size = 2.0f * UI_DPI_FAC;
-  const float point_size_factor = 1.5f;
-  const float max_point_size = point_size_factor * min_point_size;
-
-  /* Each consecutive grid level is five times larger than the previous. */
-  const int subdivision_scale = 5;
-
-  const float view_level = logf(min_step / zoom_x) / logf(subdivision_scale);
-  const int largest_visible_level = (int)view_level;
-
-  for (int level_offset = 0; level_offset <= grid_subdivisions; level_offset++) {
-    const int level = largest_visible_level - level_offset;
-
-    if (level < 0) {
-      break;
-    }
-
-    const float level_scale = powf(subdivision_scale, level);
-    const float point_size_precise = min_point_size * level_scale * zoom_x;
-    const float point_size_draw = ceilf(
-        clamp_f(point_size_precise, min_point_size, max_point_size));
-
-    /* To compensate the for the clamped point_size we adjust the alpha to make the overall
-     * brightness of the grid background more consistent. */
-    const float alpha = pow2f(point_size_precise / point_size_draw);
-
-    /* Make sure we don't draw points once the alpha gets too low. */
-    const float alpha_cutoff = 0.01f;
-    if (alpha < alpha_cutoff) {
-      break;
-    }
-    const float alpha_clamped = clamp_f((1.0f + alpha_cutoff) * alpha - alpha_cutoff, 0.0f, 1.0f);
-
-    /* If we have don't draw enough subdivision levels so they fade out naturally, we apply an
-     * additional fade to the last level to avoid pop in. */
-    const bool last_level = level_offset == grid_subdivisions;
-    const float subdivision_fade = last_level ? (1.0f - fractf(view_level)) : 1.0f;
-
-    float color[4];
-    UI_GetThemeColor3fv(grid_color_id, color);
-    color[3] = alpha_clamped * subdivision_fade;
-
-    const float step = min_step * level_scale;
-    int count_x;
-    float start_x;
-    grid_axis_start_and_count(step, v2d->cur.xmin, v2d->cur.xmax, &start_x, &count_x);
-    int count_y;
-    float start_y;
-    grid_axis_start_and_count(step, v2d->cur.ymin, v2d->cur.ymax, &start_y, &count_y);
-    if (count_x == 0 || count_y == 0) {
-      continue;
-    }
-
-    GPU_point_size(point_size_draw);
-    immBegin(GPU_PRIM_POINTS, count_x * count_y);
-
-    /* Theoretically drawing on top of lower grid levels could be avoided, but it would also
-     * increase the complexity of this loop, which isn't worth the time at the moment. */
-    for (int i_y = 0; i_y < count_y; i_y++) {
-      const float y = start_y + step * i_y;
-      for (int i_x = 0; i_x < count_x; i_x++) {
-        const float x = start_x + step * i_x;
-        immAttr4fv(color_id, color);
-        immVertex2f(pos, x, y);
-      }
-    }
-
-    immEnd();
-  }
-
-  immUnbindProgram();
-}
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name Scrollers
- * \{ */
-
-/**
- * View2DScrollers is typedef'd in UI_view2d.h
- *
- * \warning The start of this struct must not change, as view2d_ops.c uses this too.
- * For now, we don't need to have a separate (internal) header for structs like this...
- */
-struct View2DScrollers {
-  /* focus bubbles */
-  /* focus bubbles */
-  /* focus bubbles */
-  int vert_min, vert_max; /* vertical scrollbar */
-  int hor_min, hor_max;   /* horizontal scrollbar */
-
-  /** Exact size of slider backdrop. */
-  rcti hor, vert;
-  /* set if sliders are full, we don't draw them */
-  /* int horfull, vertfull; */ /* UNUSED */
-};
-
-void UI_view2d_scrollers_calc(View2D *v2d,
-                              const rcti *mask_custom,
-                              struct View2DScrollers *r_scrollers)
-{
-  rcti vert, hor;
-  float fac1, fac2, totsize, scrollsize;
-  const int scroll = view2d_scroll_mapped(v2d->scroll);
-  int smaller;
-
-  /* Always update before drawing (for dynamically sized scrollers). */
-  view2d_masks(v2d, mask_custom);
-
-  vert = v2d->vert;
-  hor = v2d->hor;
-
-  /* slider rects need to be smaller than region and not interfere with splitter areas */
-  hor.xmin += UI_HEADER_OFFSET;
-  hor.xmax -= UI_HEADER_OFFSET;
-  vert.ymin += UI_HEADER_OFFSET;
-  vert.ymax -= UI_HEADER_OFFSET;
-
-  /* width of sliders */
-  smaller = (int)(0.1f * U.widget_unit);
-  if (scroll & V2D_SCROLL_BOTTOM) {
-    hor.ymin += smaller;
-  }
-  else {
-    hor.ymax -= smaller;
-  }
-
-  if (scroll & V2D_SCROLL_LEFT) {
-    vert.xmin += smaller;
-  }
-  else {
-    vert.xmax -= smaller;
-  }
-
-  CLAMP_MAX(vert.ymin, vert.ymax - V2D_SCROLL_HANDLE_SIZE_HOTSPOT);
-  CLAMP_MAX(hor.xmin, hor.xmax - V2D_SCROLL_HANDLE_SIZE_HOTSPOT);
-
-  /* store in scrollers, used for drawing */
-  r_scrollers->vert = vert;
-  r_scrollers->hor = hor;
-
-  /* scroller 'buttons':
-   * - These should always remain within the visible region of the scrollbar
-   * - They represent the region of 'tot' that is visible in 'cur'
-   */
-
-  /* horizontal scrollers */
-  if (scroll & V2D_SCROLL_HORIZONTAL) {
-    /* scroller 'button' extents */
-    totsize = BLI_rctf_size_x(&v2d->tot);
-    scrollsize = (float)BLI_rcti_size_x(&hor);
-    if (totsize == 0.0f) {
-      totsize = 1.0f; /* avoid divide by zero */
-    }
-
-    fac1 = (v2d->cur.xmin - v2d->tot.xmin) / totsize;
-    if (fac1 <= 0.0f) {
-      r_scrollers->hor_min = hor.xmin;
-    }
-    else {
-      r_scrollers->hor_min = (int)(hor.xmin + (fac1 * scrollsize));
-    }
-
-    fac2 = (v2d->cur.xmax - v2d->tot.xmin) / totsize;
-    if (fac2 >= 1.0f) {
-      r_scrollers->hor_max = hor.xmax;
-    }
-    else {
-      r_scrollers->hor_max = (int)(hor.xmin + (fac2 * scrollsize));
-    }
-
-    /* prevent inverted sliders */
-    if (r_scrollers->hor_min > r_scrollers->hor_max) {
-      r_scrollers->hor_min = r_scrollers->hor_max;
-    }
-    /* prevent sliders from being too small to grab */
-    if ((r_scrollers->hor_max - r_scrollers->hor_min) < V2D_SCROLL_THUMB_SIZE_MIN) {
-      r_scrollers->hor_max = r_scrollers->hor_min + V2D_SCROLL_THUMB_SIZE_MIN;
-
-      CLAMP(r_scrollers->hor_max, hor.xmin + V2D_SCROLL_THUMB_SIZE_MIN, hor.xmax);
-      CLAMP(r_scrollers->hor_min, hor.xmin, hor.xmax - V2D_SCROLL_THUMB_SIZE_MIN);
-    }
-  }
-
-  /* vertical scrollers */
-  if (scroll & V2D_SCROLL_VERTICAL) {
-    /* scroller 'button' extents */
-    totsize = BLI_rctf_size_y(&v2d->tot);
-    scrollsize = (float)BLI_rcti_size_y(&vert);
-    if (totsize == 0.0f) {
-      totsize = 1.0f; /* avoid divide by zero */
-    }
-
-    fac1 = (v2d->cur.ymin - v2d->tot.ymin) / totsize;
-    if (fac1 <= 0.0f) {
-      r_scrollers->vert_min = vert.ymin;
-    }
-    else {
-      r_scrollers->vert_min = (int)(vert.ymin + (fac1 * scrollsize));
-    }
-
-    fac2 = (v2d->cur.ymax - v2d->tot.ymin) / totsize;
-    if (fac2 >= 1.0f) {
-      r_scrollers->vert_max = vert.ymax;
-    }
-    else {
-      r_scrollers->vert_max = (int)(vert.ymin + (fac2 * scrollsize));
-    }
-
-    /* prevent inverted sliders */
-    if (r_scrollers->vert_min > r_scrollers->vert_max) {
-      r_scrollers->vert_min = r_scrollers->vert_max;
-    }
-    /* prevent sliders from being too small to grab */
-    if ((r_scrollers->vert_max - r_scrollers->vert_min) < V2D_SCROLL_THUMB_SIZE_MIN) {
-      r_scrollers->vert_max = r_scrollers->vert_min + V2D_SCROLL_THUMB_SIZE_MIN;
-
-      CLAMP(r_scrollers->vert_max, vert.ymin + V2D_SCROLL_THUMB_SIZE_MIN, vert.ymax);
-      CLAMP(r_scrollers->vert_min, vert.ymin, vert.ymax - V2D_SCROLL_THUMB_SIZE_MIN);
-    }
-  }
-}
-
-void UI_view2d_scrollers_draw(View2D *v2d, const rcti *mask_custom)
-{
-  View2DScrollers scrollers;
-  UI_view2d_scrollers_calc(v2d, mask_custom, &scrollers);
-  bTheme *btheme = UI_GetTheme();
-  rcti vert, hor;
-  const int scroll = view2d_scroll_mapped(v2d->scroll);
-  const char emboss_alpha = btheme->tui.widget_emboss[3];
-  uchar scrollers_back_color[4];
-
-  /* Color for scrollbar backs */
-  UI_GetThemeColor4ubv(TH_BACK, scrollers_back_color);
-
-  /* make copies of rects for less typing */
-  vert = scrollers.vert;
-  hor = scrollers.hor;
-
-  /* horizontal scrollbar */
-  if (scroll & V2D_SCROLL_HORIZONTAL) {
-    uiWidgetColors wcol = btheme->tui.wcol_scroll;
-    const float alpha_fac = v2d->alpha_hor / 255.0f;
-    rcti slider;
-    int state;
-
-    slider.xmin = scrollers.hor_min;
-    slider.xmax = scrollers.hor_max;
-    slider.ymin = hor.ymin;
-    slider.ymax = hor.ymax;
-
-    state = (v2d->scroll_ui & V2D_SCROLL_H_ACTIVE) ? UI_SCROLL_PRESSED : 0;
-
-    wcol.inner[3] *= alpha_fac;
-    wcol.item[3] *= alpha_fac;
-    wcol.outline[3] *= alpha_fac;
-    btheme->tui.widget_emboss[3] *= alpha_fac; /* will be reset later */
-
-    /* show zoom handles if:
-     * - zooming on x-axis is allowed (no scroll otherwise)
-     * - slider bubble is large enough (no overdraw confusion)
-     * - scale is shown on the scroller
-     *   (workaround to make sure that button windows don't show these,
-     *   and only the time-grids with their zoom-ability can do so).
-     */
-    if ((v2d->keepzoom & V2D_LOCKZOOM_X) == 0 && (v2d->scroll & V2D_SCROLL_HORIZONTAL_HANDLES) &&
-        (BLI_rcti_size_x(&slider) > V2D_SCROLL_HANDLE_SIZE_HOTSPOT)) {
-      state |= UI_SCROLL_ARROWS;
-    }
-
-    UI_draw_widget_scroll(&wcol, &hor, &slider, state);
-  }
-
-  /* vertical scrollbar */
-  if (scroll & V2D_SCROLL_VERTICAL) {
-    uiWidgetColors wcol = btheme->tui.wcol_scroll;
-    rcti slider;
-    const float alpha_fac = v2d->alpha_vert / 255.0f;
-    int state;
-
-    slider.xmin = vert.xmin;
-    slider.xmax = vert.xmax;
-    slider.ymin = scrollers.vert_min;
-    slider.ymax = scrollers.vert_max;
-
-    state = (v2d->scroll_ui & V2D_SCROLL_V_ACTIVE) ? UI_SCROLL_PRESSED : 0;
-
-    wcol.inner[3] *= alpha_fac;
-    wcol.item[3] *= alpha_fac;
-    wcol.outline[3] *= alpha_fac;
-    btheme->tui.widget_emboss[3] *= alpha_fac; /* will be reset later */
-
-    /* show zoom handles if:
-     * - zooming on y-axis is allowed (no scroll otherwise)
-     * - slider bubble is large enough (no overdraw confusion)
-     * - scale is shown on the scroller
-     *   (workaround to make sure that button windows don't show these,
-     *   and only the time-grids with their zoomability can do so)
-     */
-    if ((v2d->keepzoom & V2D_LOCKZOOM_Y) == 0 && (v2d->scroll & V2D_SCROLL_VERTICAL_HANDLES) &&
-        (BLI_rcti_size_y(&slider) > V2D_SCROLL_HANDLE_SIZE_HOTSPOT)) {
-      state |= UI_SCROLL_ARROWS;
-    }
-
-    UI_draw_widget_scroll(&wcol, &vert, &slider, state);
-  }
-
-  /* Was changed above, so reset. */
-  btheme->tui.widget_emboss[3] = emboss_alpha;
-}
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name List View Utilities
- * \{ */
-
-void UI_view2d_listview_view_to_cell(float columnwidth,
-                                     float rowheight,
-                                     float startx,
-                                     float starty,
-                                     float viewx,
-                                     float viewy,
-                                     int *r_column,
-                                     int *r_row)
-{
-  if (r_column) {
-    if (columnwidth > 0) {
-      /* Columns go from left to right (x increases). */
-      *r_column = floorf((viewx - startx) / columnwidth);
-    }
-    else {
-      *r_column = 0;
-    }
-  }
-
-  if (r_row) {
-    if (rowheight > 0) {
-      /* Rows got from top to bottom (y decreases). */
-      *r_row = floorf((starty - viewy) / rowheight);
-    }
-    else {
-      *r_row = 0;
-    }
-  }
-}
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name Coordinate Conversions
- * \{ */
-
-float UI_view2d_region_to_view_x(const struct View2D *v2d, float x)
-{
-  return (v2d->cur.xmin +
-          (BLI_rctf_size_x(&v2d->cur) * (x - v2d->mask.xmin) / BLI_rcti_size_x(&v2d->mask)));
-}
-float UI_view2d_region_to_view_y(const struct View2D *v2d, float y)
-{
-  return (v2d->cur.ymin +
-          (BLI_rctf_size_y(&v2d->cur) * (y - v2d->mask.ymin) / BLI_rcti_size_y(&v2d->mask)));
-}
-
-void UI_view2d_region_to_view(
-    const View2D *v2d, float x, float y, float *r_view_x, float *r_view_y)
-{
-  *r_view_x = UI_view2d_region_to_view_x(v2d, x);
-  *r_view_y = UI_view2d_region_to_view_y(v2d, y);
-}
-
-void UI_view2d_region_to_view_rctf(const View2D *v2d, const rctf *rect_src, rctf *rect_dst)
-{
-  const float cur_size[2] = {BLI_rctf_size_x(&v2d->cur), BLI_rctf_size_y(&v2d->cur)};
-  const float mask_size[2] = {BLI_rcti_size_x(&v2d->mask), BLI_rcti_size_y(&v2d->mask)};
-
-  rect_dst->xmin = (v2d->cur.xmin +
-                    (cur_size[0] * (rect_src->xmin - v2d->mask.xmin) / mask_size[0]));
-  rect_dst->xmax = (v2d->cur.xmin +
-                    (cur_size[0] * (rect_src->xmax - v2d->mask.xmin) / mask_size[0]));
-  rect_dst->ymin = (v2d->cur.ymin +
-                    (cur_size[1] * (rect_src->ymin - v2d->mask.ymin) / mask_size[1]));
-  rect_dst->ymax = (v2d->cur.ymin +
-                    (cur_size[1] * (rect_src->ymax - v2d->mask.ymin) / mask_size[1]));
-}
-
-float UI_view2d_view_to_region_x(const View2D *v2d, float x)
-{
-  return (v2d->mask.xmin +
-          (((x - v2d->cur.xmin) / BLI_rctf_size_x(&v2d->cur)) * BLI_rcti_size_x(&v2d->mask)));
-}
-float UI_view2d_view_to_region_y(const View2D *v2d, float y)
-{
-  return (v2d->mask.ymin +
-          (((y - v2d->cur.ymin) / BLI_rctf_size_y(&v2d->cur)) * BLI_rcti_size_y(&v2d->mask)));
-}
-
-bool UI_view2d_view_to_region_clip(
-    const View2D *v2d, float x, float y, int *r_region_x, int *r_region_y)
-{
-  /* express given coordinates as proportional values */
-  x = (x - v2d->cur.xmin) / BLI_rctf_size_x(&v2d->cur);
-  y = (y - v2d->cur.ymin) / BLI_rctf_size_y(&v2d->cur);
-
-  /* check if values are within bounds */
-  if ((x >= 0.0f) && (x <= 1.0f) && (y >= 0.0f) && (y <= 1.0f)) {
-    *r_region_x = (int)(v2d->mask.xmin + (x * BLI_rcti_size_x(&v2d->mask)));
-    *r_region_y = (int)(v2d->mask.ymin + (y * BLI_rcti_size_y(&v2d->mask)));
-
-    return true;
-  }
-
-  /* set initial value in case coordinate lies outside of bounds */
-  *r_region_x = *r_region_y = V2D_IS_CLIPPED;
-
-  return false;
-}
-
-void UI_view2d_view_to_region(
-    const View2D *v2d, float x, float y, int *r_region_x, int *r_region_y)
-{
-  /* Step 1: express given coordinates as proportional values. */
-  x = (x - v2d->cur.xmin) / BLI_rctf_size_x(&v2d->cur);
-  y = (y - v2d->cur.ymin) / BLI_rctf_size_y(&v2d->cur);
-
-  /* Step 2: convert proportional distances to screen coordinates. */
-  x = v2d->mask.xmin + (x * BLI_rcti_size_x(&v2d->mask));
-  y = v2d->mask.ymin + (y * BLI_rcti_size_y(&v2d->mask));
-
-  /* Although we don't clamp to lie within region bounds, we must avoid exceeding size of ints. */
-  *r_region_x = clamp_float_to_int(x);
-  *r_region_y = clamp_float_to_int(y);
-}
-
-void UI_view2d_view_to_region_fl(
-    const View2D *v2d, float x, float y, float *r_region_x, float *r_region_y)
-{
-  /* express given coordinates as proportional values */
-  x = (x - v2d->cur.xmin) / BLI_rctf_size_x(&v2d->cur);
-  y = (y - v2d->cur.ymin) / BLI_rctf_size_y(&v2d->cur);
-
-  /* convert proportional distances to screen coordinates */
-  *r_region_x = v2d->mask.xmin + (x * BLI_rcti_size_x(&v2d->mask));
-  *r_region_y = v2d->mask.ymin + (y * BLI_rcti_size_y(&v2d->mask));
-}
-
-void UI_view2d_view_to_region_rcti(const View2D *v2d, const rctf *rect_src, rcti *rect_dst)
-{
-  const float cur_size[2] = {BLI_rctf_size_x(&v2d->cur), BLI_rctf_size_y(&v2d->cur)};
-  const float mask_size[2] = {BLI_rcti_size_x(&v2d->mask), BLI_rcti_size_y(&v2d->mask)};
-  rctf rect_tmp;
-
-  /* Step 1: express given coordinates as proportional values. */
-  rect_tmp.xmin = (rect_src->xmin - v2d->cur.xmin) / cur_size[0];
-  rect_tmp.xmax = (rect_src->xmax - v2d->cur.xmin) / cur_size[0];
-  rect_tmp.ymin = (rect_src->ymin - v2d->cur.ymin) / cur_size[1];
-  rect_tmp.ymax = (rect_src->ymax - v2d->cur.ymin) / cur_size[1];
-
-  /* Step 2: convert proportional distances to screen coordinates. */
-  rect_tmp.xmin = v2d->mask.xmin + (rect_tmp.xmin * mask_size[0]);
-  rect_tmp.xmax = v2d->mask.xmin + (rect_tmp.xmax * mask_size[0]);
-  rect_tmp.ymin = v2d->mask.ymin + (rect_tmp.ymin * mask_size[1]);
-  rect_tmp.ymax = v2d->mask.ymin + (rect_tmp.ymax * mask_size[1]);
-
-  clamp_rctf_to_rcti(rect_dst, &rect_tmp);
-}
-
-void UI_view2d_view_to_region_m4(const View2D *v2d, float matrix[4][4])
-{
-  rctf mask;
-  unit_m4(matrix);
-  BLI_rctf_rcti_copy(&mask, &v2d->mask);
-  BLI_rctf_transform_calc_m4_pivot_min(&v2d->cur, &mask, matrix);
-}
-
-bool UI_view2d_view_to_region_rcti_clip(const View2D *v2d, const rctf *rect_src, rcti *rect_dst)
-{
-  const float cur_size[2] = {BLI_rctf_size_x(&v2d->cur), BLI_rctf_size_y(&v2d->cur)};
-  const float mask_size[2] = {BLI_rcti_size_x(&v2d->mask), BLI_rcti_size_y(&v2d->mask)};
-  rctf rect_tmp;
-
-  BLI_assert(rect_src->xmin <= rect_src->xmax && rect_src->ymin <= rect_src->ymax);
-
-  /* Step 1: express given coordinates as proportional values. */
-  rect_tmp.xmin = (rect_src->xmin - v2d->cur.xmin) / cur_size[0];
-  rect_tmp.xmax = (rect_src->xmax - v2d->cur.xmin) / cur_size[0];
-  rect_tmp.ymin = (rect_src->ymin - v2d->cur.ymin) / cur_size[1];
-  rect_tmp.ymax = (rect_src->ymax - v2d->cur.ymin) / cur_size[1];
-
-  if (((rect_tmp.xmax < 0.0f) || (rect_tmp.xmin > 1.0f) || (rect_tmp.ymax < 0.0f) ||
-       (rect_tmp.ymin > 1.0f)) == 0) {
-    /* Step 2: convert proportional distances to screen coordinates. */
-    rect_tmp.xmin = v2d->mask.xmin + (rect_tmp.xmin * mask_size[0]);
-    rect_tmp.xmax = v2d->mask.ymin + (rect_tmp.xmax * mask_size[0]);
-    rect_tmp.ymin = v2d->mask.ymin + (rect_tmp.ymin * mask_size[1]);
-    rect_tmp.ymax = v2d->mask.ymin + (rect_tmp.ymax * mask_size[1]);
-
-    clamp_rctf_to_rcti(rect_dst, &rect_tmp);
-
-    return true;
-  }
-
-  rect_dst->xmin = rect_dst->xmax = rect_dst->ymin = rect_dst->ymax = V2D_IS_CLIPPED;
-  return false;
-}
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name Utilities
- * \{ */
-
-View2D *UI_view2d_fromcontext(const bContext *C)
-{
-  ScrArea *area = CTX_wm_area(C);
-  ARegion *region = CTX_wm_region(C);
-
-  if (area == NULL) {
-    return NULL;
-  }
-  if (region == NULL) {
-    return NULL;
-  }
-  return &(region->v2d);
-}
-
-View2D *UI_view2d_fromcontext_rwin(const bContext *C)
-{
-  ScrArea *area = CTX_wm_area(C);
-  ARegion *region = CTX_wm_region(C);
-
-  if (area == NULL) {
-    return NULL;
-  }
-  if (region == NULL) {
-    return NULL;
-  }
-  if (region->regiontype != RGN_TYPE_WINDOW) {
-    ARegion *region_win = BKE_area_find_region_type(area, RGN_TYPE_WINDOW);
-    return region_win ? &(region_win->v2d) : NULL;
-  }
-  return &(region->v2d);
-}
-
-void UI_view2d_scroller_size_get(const View2D *v2d, float *r_x, float *r_y)
-{
-  const int scroll = view2d_scroll_mapped(v2d->scroll);
-
-  if (r_x) {
-    if (scroll & V2D_SCROLL_VERTICAL) {
-      *r_x = (scroll & V2D_SCROLL_VERTICAL_HANDLES) ? V2D_SCROLL_HANDLE_WIDTH : V2D_SCROLL_WIDTH;
-    }
-    else {
-      *r_x = 0;
-    }
-  }
-  if (r_y) {
-    if (scroll & V2D_SCROLL_HORIZONTAL) {
-      *r_y = (scroll & V2D_SCROLL_HORIZONTAL_HANDLES) ? V2D_SCROLL_HANDLE_HEIGHT :
-                                                        V2D_SCROLL_HEIGHT;
-    }
-    else {
-      *r_y = 0;
-    }
-  }
-}
-
-void UI_view2d_scale_get(const View2D *v2d, float *r_x, float *r_y)
-{
-  if (r_x) {
-    *r_x = UI_view2d_scale_get_x(v2d);
-  }
-  if (r_y) {
-    *r_y = UI_view2d_scale_get_y(v2d);
-  }
-}
-float UI_view2d_scale_get_x(const View2D *v2d)
-{
-  return BLI_rcti_size_x(&v2d->mask) / BLI_rctf_size_x(&v2d->cur);
-}
-float UI_view2d_scale_get_y(const View2D *v2d)
-{
-  return BLI_rcti_size_y(&v2d->mask) / BLI_rctf_size_y(&v2d->cur);
-}
-void UI_view2d_scale_get_inverse(const View2D *v2d, float *r_x, float *r_y)
-{
-  if (r_x) {
-    *r_x = BLI_rctf_size_x(&v2d->cur) / BLI_rcti_size_x(&v2d->mask);
-  }
-  if (r_y) {
-    *r_y = BLI_rctf_size_y(&v2d->cur) / BLI_rcti_size_y(&v2d->mask);
-  }
-}
-
-void UI_view2d_center_get(const struct View2D *v2d, float *r_x, float *r_y)
-{
-  /* get center */
-  if (r_x) {
-    *r_x = BLI_rctf_cent_x(&v2d->cur);
-  }
-  if (r_y) {
-    *r_y = BLI_rctf_cent_y(&v2d->cur);
-  }
-}
-void UI_view2d_center_set(struct View2D *v2d, float x, float y)
-{
-  BLI_rctf_recenter(&v2d->cur, x, y);
-
-  /* make sure that 'cur' rect is in a valid state as a result of these changes */
-  UI_view2d_curRect_validate(v2d);
-}
-
-void UI_view2d_offset(struct View2D *v2d, float xfac, float yfac)
-{
-  if (xfac != -1.0f) {
-    const float xsize = BLI_rctf_size_x(&v2d->cur);
-    const float xmin = v2d->tot.xmin;
-    const float xmax = v2d->tot.xmax - xsize;
-
-    v2d->cur.xmin = (xmin * (1.0f - xfac)) + (xmax * xfac);
-    v2d->cur.xmax = v2d->cur.xmin + xsize;
-  }
-
-  if (yfac != -1.0f) {
-    const float ysize = BLI_rctf_size_y(&v2d->cur);
-    const float ymin = v2d->tot.ymin;
-    const float ymax = v2d->tot.ymax - ysize;
-
-    v2d->cur.ymin = (ymin * (1.0f - yfac)) + (ymax * yfac);
-    v2d->cur.ymax = v2d->cur.ymin + ysize;
-  }
-
-  UI_view2d_curRect_validate(v2d);
-}
-
-char UI_view2d_mouse_in_scrollers_ex(const ARegion *region,
-                                     const View2D *v2d,
-                                     const int xy[2],
-                                     int *r_scroll)
-{
-  const int scroll = view2d_scroll_mapped(v2d->scroll);
-  *r_scroll = scroll;
-
-  if (scroll) {
-    /* Move to region-coordinates. */
-    const int co[2] = {
-        xy[0] - region->winrct.xmin,
-        xy[1] - region->winrct.ymin,
-    };
-    if (scroll & V2D_SCROLL_HORIZONTAL) {
-      if (IN_2D_HORIZ_SCROLL(v2d, co)) {
-        return 'h';
-      }
-    }
-    if (scroll & V2D_SCROLL_VERTICAL) {
-      if (IN_2D_VERT_SCROLL(v2d, co)) {
-        return 'v';
-      }
-    }
-  }
-
-  return 0;
-}
-
-char UI_view2d_rect_in_scrollers_ex(const ARegion *region,
-                                    const View2D *v2d,
-                                    const rcti *rect,
-                                    int *r_scroll)
-{
-  const int scroll = view2d_scroll_mapped(v2d->scroll);
-  *r_scroll = scroll;
-
-  if (scroll) {
-    /* Move to region-coordinates. */
-    rcti rect_region = *rect;
-    BLI_rcti_translate(&rect_region, -region->winrct.xmin, region->winrct.ymin);
-    if (scroll & V2D_SCROLL_HORIZONTAL) {
-      if (IN_2D_HORIZ_SCROLL_RECT(v2d, &rect_region)) {
-        return 'h';
-      }
-    }
-    if (scroll & V2D_SCROLL_VERTICAL) {
-      if (IN_2D_VERT_SCROLL_RECT(v2d, &rect_region)) {
-        return 'v';
-      }
-    }
-  }
-
-  return 0;
-}
-
-char UI_view2d_mouse_in_scrollers(const ARegion *region, const View2D *v2d, const int xy[2])
-{
-  int scroll_dummy = 0;
-  return UI_view2d_mouse_in_scrollers_ex(region, v2d, xy, &scroll_dummy);
-}
-
-char UI_view2d_rect_in_scrollers(const ARegion *region, const View2D *v2d, const rcti *rect)
-{
-  int scroll_dummy = 0;
-  return UI_view2d_rect_in_scrollers_ex(region, v2d, rect, &scroll_dummy);
-}
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name View2D Text Drawing Cache
- * \{ */
-
-typedef struct View2DString {
-  struct View2DString *next;
-  union {
-    uchar ub[4];
-    int pack;
-  } col;
-  rcti rect;
-  int mval[2];
-
-  /* str is allocated past the end */
-  char str[0];
-} View2DString;
-
-/* assumes caches are used correctly, so for time being no local storage in v2d */
-static MemArena *g_v2d_strings_arena = NULL;
-static View2DString *g_v2d_strings = NULL;
-
-void UI_view2d_text_cache_add(
-    View2D *v2d, float x, float y, const char *str, size_t str_len, const uchar col[4])
-{
-  int mval[2];
-
-  BLI_assert(str_len == strlen(str));
-
-  if (UI_view2d_view_to_region_clip(v2d, x, y, &mval[0], &mval[1])) {
-    const int alloc_len = str_len + 1;
-    View2DString *v2s;
-
-    if (g_v2d_strings_arena == NULL) {
-      g_v2d_strings_arena = BLI_memarena_new(MEM_SIZE_OPTIMAL(1 << 14), __func__);
-    }
-
-    v2s = BLI_memarena_alloc(g_v2d_strings_arena, sizeof(View2DString) + alloc_len);
-
-    BLI_LINKS_PREPEND(g_v2d_strings, v2s);
-
-    v2s->col.pack = *((const int *)col);
-
-    memset(&v2s->rect, 0, sizeof(v2s->rect));
-
-    v2s->mval[0] = mval[0];
-    v2s->mval[1] = mval[1];
-
-    memcpy(v2s->str, str, alloc_len);
-  }
-}
-
-void UI_view2d_text_cache_add_rectf(
-    View2D *v2d, const rctf *rect_view, const char *str, size_t str_len, const uchar col[4])
-{
-  rcti rect;
-
-  BLI_assert(str_len == strlen(str));
-
-  if (UI_view2d_view_to_region_rcti_clip(v2d, rect_view, &rect)) {
-    const int alloc_len = str_len + 1;
-    View2DString *v2s;
-
-    if (g_v2d_strings_arena == NULL) {
-      g_v2d_strings_arena = BLI_memarena_new(MEM_SIZE_OPTIMAL(1 << 14), __func__);
-    }
-
-    v2s = BLI_memarena_alloc(g_v2d_strings_arena, sizeof(View2DString) + alloc_len);
-
-    BLI_LINKS_PREPEND(g_v2d_strings, v2s);
-
-    v2s->col.pack = *((const int *)col);
-
-    v2s->rect = rect;
-
-    v2s->mval[0] = v2s->rect.xmin;
-    v2s->mval[1] = v2s->rect.ymin;
-
-    memcpy(v2s->str, str, alloc_len);
-  }
-}
-
-void UI_view2d_text_cache_draw(ARegion *region)
-{
-  View2DString *v2s;
-  int col_pack_prev = 0;
-
-  /* investigate using BLF_ascender() */
-  const int font_id = BLF_default();
-
-  BLF_set_default();
-  const float default_height = g_v2d_strings ? BLF_height(font_id, "28", 3) : 0.0f;
-
-  wmOrtho2_region_pixelspace(region);
-
-  for (v2s = g_v2d_strings; v2s; v2s = v2s->next) {
-    int xofs = 0, yofs;
-
-    yofs = ceil(0.5f * (BLI_rcti_size_y(&v2s->rect) - default_height));
-    if (yofs < 1) {
-      yofs = 1;
-    }
-
-    if (col_pack_prev != v2s->col.pack) {
-      BLF_color3ubv(font_id, v2s->col.ub);
-      col_pack_prev = v2s->col.pack;
-    }
-
-    if (v2s->rect.xmin >= v2s->rect.xmax) {
-      BLF_draw_default((float)(v2s->mval[0] + xofs),
-                       (float)(v2s->mval[1] + yofs),
-                       0.0,
-                       v2s->str,
-                       BLF_DRAW_STR_DUMMY_MAX);
-    }
-    else {
-      BLF_enable(font_id, BLF_CLIPPING);
-      BLF_clipping(
-          font_id, v2s->rect.xmin - 4, v2s->rect.ymin - 4, v2s->rect.xmax + 4, v2s->rect.ymax + 4);
-      BLF_draw_default(
-          v2s->rect.xmin + xofs, v2s->rect.ymin + yofs, 0.0f, v2s->str, BLF_DRAW_STR_DUMMY_MAX);
-      BLF_disable(font_id, BLF_CLIPPING);
-    }
-  }
-  g_v2d_strings = NULL;
-
-  if (g_v2d_strings_arena) {
-    BLI_memarena_free(g_v2d_strings_arena);
-    g_v2d_strings_arena = NULL;
-  }
-}
-
-/** \} */