Nodes: move some files to C++

This just moves a couple of files in `space_node` to C++ and fixes
related errors.

The goal is to be able to use C++ data structures to simplify the code.

Differential Revision: https://developer.blender.org/D11451

1 files changed, 0 insertions, 700 deletions

diff --git a/source/blender/editors/space_node/node_view.c b/source/blender/editors/space_node/node_view.c
deleted file mode 100644
index 8ecab92aa26..00000000000
--- a/source/blender/editors/space_node/node_view.c
+++ /dev/null
@@ -1,700 +0,0 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2008 Blender Foundation.
- * All rights reserved.
- */
-
-/** \file
- * \ingroup spnode
- */
-
-#include "DNA_node_types.h"
-
-#include "BLI_math.h"
-#include "BLI_rect.h"
-#include "BLI_utildefines.h"
-
-#include "BKE_context.h"
-#include "BKE_image.h"
-#include "BKE_main.h"
-#include "BKE_node.h"
-#include "BKE_screen.h"
-
-#include "ED_image.h"
-#include "ED_node.h" /* own include */
-#include "ED_screen.h"
-#include "ED_space_api.h"
-
-#include "RNA_access.h"
-#include "RNA_define.h"
-
-#include "WM_api.h"
-#include "WM_types.h"
-
-#include "UI_view2d.h"
-
-#include "MEM_guardedalloc.h"
-
-#include "IMB_colormanagement.h"
-#include "IMB_imbuf.h"
-#include "IMB_imbuf_types.h"
-
-#include "node_intern.h" /* own include */
-
-/* -------------------------------------------------------------------- */
-/** \name View All Operator
- * \{ */
-
-int space_node_view_flag(
-    bContext *C, SpaceNode *snode, ARegion *region, const int node_flag, const int smooth_viewtx)
-{
-  bNode *node;
-  rctf cur_new;
-  float oldwidth, oldheight, width, height;
-  float oldasp, asp;
-  int tot = 0;
-  bool has_frame = false;
-
-  oldwidth = BLI_rctf_size_x(&region->v2d.cur);
-  oldheight = BLI_rctf_size_y(&region->v2d.cur);
-
-  oldasp = oldwidth / oldheight;
-
-  BLI_rctf_init_minmax(&cur_new);
-
-  if (snode->edittree) {
-    for (node = snode->edittree->nodes.first; node; node = node->next) {
-      if ((node->flag & node_flag) == node_flag) {
-        BLI_rctf_union(&cur_new, &node->totr);
-        tot++;
-
-        if (node->type == NODE_FRAME) {
-          has_frame = true;
-        }
-      }
-    }
-  }
-
-  if (tot) {
-    width = BLI_rctf_size_x(&cur_new);
-    height = BLI_rctf_size_y(&cur_new);
-    asp = width / height;
-
-    /* for single non-frame nodes, don't zoom in, just pan view,
-     * but do allow zooming out, this allows for big nodes to be zoomed out */
-    if ((tot == 1) && (has_frame == false) && ((oldwidth * oldheight) > (width * height))) {
-      /* center, don't zoom */
-      BLI_rctf_resize(&cur_new, oldwidth, oldheight);
-    }
-    else {
-      if (oldasp < asp) {
-        const float height_new = width / oldasp;
-        cur_new.ymin = cur_new.ymin - height_new / 2.0f;
-        cur_new.ymax = cur_new.ymax + height_new / 2.0f;
-      }
-      else {
-        const float width_new = height * oldasp;
-        cur_new.xmin = cur_new.xmin - width_new / 2.0f;
-        cur_new.xmax = cur_new.xmax + width_new / 2.0f;
-      }
-
-      /* add some padding */
-      BLI_rctf_scale(&cur_new, 1.1f);
-    }
-
-    UI_view2d_smooth_view(C, region, &cur_new, smooth_viewtx);
-  }
-
-  return (tot != 0);
-}
-
-static int node_view_all_exec(bContext *C, wmOperator *op)
-{
-  ARegion *region = CTX_wm_region(C);
-  SpaceNode *snode = CTX_wm_space_node(C);
-  const int smooth_viewtx = WM_operator_smooth_viewtx_get(op);
-
-  /* is this really needed? */
-  snode->xof = 0;
-  snode->yof = 0;
-
-  if (space_node_view_flag(C, snode, region, 0, smooth_viewtx)) {
-    return OPERATOR_FINISHED;
-  }
-  return OPERATOR_CANCELLED;
-}
-
-void NODE_OT_view_all(wmOperatorType *ot)
-{
-  /* identifiers */
-  ot->name = "Frame All";
-  ot->idname = "NODE_OT_view_all";
-  ot->description = "Resize view so you can see all nodes";
-
-  /* api callbacks */
-  ot->exec = node_view_all_exec;
-  ot->poll = ED_operator_node_active;
-
-  /* flags */
-  ot->flag = 0;
-}
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name View Selected Operator
- * \{ */
-
-static int node_view_selected_exec(bContext *C, wmOperator *op)
-{
-  ARegion *region = CTX_wm_region(C);
-  SpaceNode *snode = CTX_wm_space_node(C);
-  const int smooth_viewtx = WM_operator_smooth_viewtx_get(op);
-
-  if (space_node_view_flag(C, snode, region, NODE_SELECT, smooth_viewtx)) {
-    return OPERATOR_FINISHED;
-  }
-  return OPERATOR_CANCELLED;
-}
-
-void NODE_OT_view_selected(wmOperatorType *ot)
-{
-  /* identifiers */
-  ot->name = "Frame Selected";
-  ot->idname = "NODE_OT_view_selected";
-  ot->description = "Resize view so you can see selected nodes";
-
-  /* api callbacks */
-  ot->exec = node_view_selected_exec;
-  ot->poll = ED_operator_node_active;
-
-  /* flags */
-  ot->flag = 0;
-}
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name Background Image Operators
- * \{ */
-
-typedef struct NodeViewMove {
-  int mvalo[2];
-  int xmin, ymin, xmax, ymax;
-} NodeViewMove;
-
-static int snode_bg_viewmove_modal(bContext *C, wmOperator *op, const wmEvent *event)
-{
-  SpaceNode *snode = CTX_wm_space_node(C);
-  ARegion *region = CTX_wm_region(C);
-  NodeViewMove *nvm = op->customdata;
-
-  switch (event->type) {
-    case MOUSEMOVE:
-
-      snode->xof -= (nvm->mvalo[0] - event->mval[0]);
-      snode->yof -= (nvm->mvalo[1] - event->mval[1]);
-      nvm->mvalo[0] = event->mval[0];
-      nvm->mvalo[1] = event->mval[1];
-
-      /* prevent dragging image outside of the window and losing it! */
-      CLAMP(snode->xof, nvm->xmin, nvm->xmax);
-      CLAMP(snode->yof, nvm->ymin, nvm->ymax);
-
-      ED_region_tag_redraw(region);
-      WM_main_add_notifier(NC_NODE | ND_DISPLAY, NULL);
-      WM_main_add_notifier(NC_SPACE | ND_SPACE_NODE_VIEW, NULL);
-
-      break;
-
-    case LEFTMOUSE:
-    case MIDDLEMOUSE:
-    case RIGHTMOUSE:
-      if (event->val == KM_RELEASE) {
-        MEM_freeN(nvm);
-        op->customdata = NULL;
-        return OPERATOR_FINISHED;
-      }
-      break;
-  }
-
-  return OPERATOR_RUNNING_MODAL;
-}
-
-static int snode_bg_viewmove_invoke(bContext *C, wmOperator *op, const wmEvent *event)
-{
-  Main *bmain = CTX_data_main(C);
-  SpaceNode *snode = CTX_wm_space_node(C);
-  ARegion *region = CTX_wm_region(C);
-  NodeViewMove *nvm;
-  Image *ima;
-  ImBuf *ibuf;
-  const float pad = 32.0f; /* better be bigger than scrollbars */
-
-  void *lock;
-
-  ima = BKE_image_ensure_viewer(bmain, IMA_TYPE_COMPOSITE, "Viewer Node");
-  ibuf = BKE_image_acquire_ibuf(ima, NULL, &lock);
-
-  if (ibuf == NULL) {
-    BKE_image_release_ibuf(ima, ibuf, lock);
-    return OPERATOR_CANCELLED;
-  }
-
-  nvm = MEM_callocN(sizeof(NodeViewMove), "NodeViewMove struct");
-  op->customdata = nvm;
-  nvm->mvalo[0] = event->mval[0];
-  nvm->mvalo[1] = event->mval[1];
-
-  nvm->xmin = -(region->winx / 2) - (ibuf->x * (0.5f * snode->zoom)) + pad;
-  nvm->xmax = (region->winx / 2) + (ibuf->x * (0.5f * snode->zoom)) - pad;
-  nvm->ymin = -(region->winy / 2) - (ibuf->y * (0.5f * snode->zoom)) + pad;
-  nvm->ymax = (region->winy / 2) + (ibuf->y * (0.5f * snode->zoom)) - pad;
-
-  BKE_image_release_ibuf(ima, ibuf, lock);
-
-  /* add modal handler */
-  WM_event_add_modal_handler(C, op);
-
-  return OPERATOR_RUNNING_MODAL;
-}
-
-static void snode_bg_viewmove_cancel(bContext *UNUSED(C), wmOperator *op)
-{
-  MEM_freeN(op->customdata);
-  op->customdata = NULL;
-}
-
-void NODE_OT_backimage_move(wmOperatorType *ot)
-{
-  /* identifiers */
-  ot->name = "Background Image Move";
-  ot->description = "Move node backdrop";
-  ot->idname = "NODE_OT_backimage_move";
-
-  /* api callbacks */
-  ot->invoke = snode_bg_viewmove_invoke;
-  ot->modal = snode_bg_viewmove_modal;
-  ot->poll = composite_node_active;
-  ot->cancel = snode_bg_viewmove_cancel;
-
-  /* flags */
-  ot->flag = OPTYPE_BLOCKING | OPTYPE_GRAB_CURSOR_XY;
-}
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name Background Image Zoom
- * \{ */
-
-static int backimage_zoom_exec(bContext *C, wmOperator *op)
-{
-  SpaceNode *snode = CTX_wm_space_node(C);
-  ARegion *region = CTX_wm_region(C);
-  float fac = RNA_float_get(op->ptr, "factor");
-
-  snode->zoom *= fac;
-  ED_region_tag_redraw(region);
-  WM_main_add_notifier(NC_NODE | ND_DISPLAY, NULL);
-  WM_main_add_notifier(NC_SPACE | ND_SPACE_NODE_VIEW, NULL);
-
-  return OPERATOR_FINISHED;
-}
-
-void NODE_OT_backimage_zoom(wmOperatorType *ot)
-{
-
-  /* identifiers */
-  ot->name = "Background Image Zoom";
-  ot->idname = "NODE_OT_backimage_zoom";
-  ot->description = "Zoom in/out the background image";
-
-  /* api callbacks */
-  ot->exec = backimage_zoom_exec;
-  ot->poll = composite_node_active;
-
-  /* flags */
-  ot->flag = OPTYPE_BLOCKING;
-
-  /* internal */
-  RNA_def_float(ot->srna, "factor", 1.2f, 0.0f, 10.0f, "Factor", "", 0.0f, 10.0f);
-}
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name Background Image Fit
- * \{ */
-
-static int backimage_fit_exec(bContext *C, wmOperator *UNUSED(op))
-{
-  Main *bmain = CTX_data_main(C);
-  SpaceNode *snode = CTX_wm_space_node(C);
-  ARegion *region = CTX_wm_region(C);
-
-  Image *ima;
-  ImBuf *ibuf;
-
-  const float pad = 32.0f;
-
-  void *lock;
-
-  float facx, facy;
-
-  ima = BKE_image_ensure_viewer(bmain, IMA_TYPE_COMPOSITE, "Viewer Node");
-  ibuf = BKE_image_acquire_ibuf(ima, NULL, &lock);
-
-  if ((ibuf == NULL) || (ibuf->x == 0) || (ibuf->y == 0)) {
-    BKE_image_release_ibuf(ima, ibuf, lock);
-    return OPERATOR_CANCELLED;
-  }
-
-  facx = 1.0f * (region->sizex - pad) / (ibuf->x * snode->zoom);
-  facy = 1.0f * (region->sizey - pad) / (ibuf->y * snode->zoom);
-
-  BKE_image_release_ibuf(ima, ibuf, lock);
-
-  snode->zoom *= min_ff(facx, facy) * U.dpi_fac;
-
-  snode->xof = 0;
-  snode->yof = 0;
-
-  ED_region_tag_redraw(region);
-  WM_main_add_notifier(NC_NODE | ND_DISPLAY, NULL);
-  WM_main_add_notifier(NC_SPACE | ND_SPACE_NODE_VIEW, NULL);
-
-  return OPERATOR_FINISHED;
-}
-
-void NODE_OT_backimage_fit(wmOperatorType *ot)
-{
-
-  /* identifiers */
-  ot->name = "Background Image Fit";
-  ot->idname = "NODE_OT_backimage_fit";
-  ot->description = "Fit the background image to the view";
-
-  /* api callbacks */
-  ot->exec = backimage_fit_exec;
-  ot->poll = composite_node_active;
-
-  /* flags */
-  ot->flag = OPTYPE_BLOCKING;
-}
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name Sample Backdrop Operator
- * \{ */
-
-typedef struct ImageSampleInfo {
-  ARegionType *art;
-  void *draw_handle;
-  int x, y;
-  int channels;
-
-  uchar col[4];
-  float colf[4];
-  float linearcol[4];
-
-  int z;
-  float zf;
-
-  int *zp;
-  float *zfp;
-
-  int draw;
-  int color_manage;
-} ImageSampleInfo;
-
-static void sample_draw(const bContext *C, ARegion *region, void *arg_info)
-{
-  Scene *scene = CTX_data_scene(C);
-  ImageSampleInfo *info = arg_info;
-
-  if (info->draw) {
-    ED_image_draw_info(scene,
-                       region,
-                       info->color_manage,
-                       false,
-                       info->channels,
-                       info->x,
-                       info->y,
-                       info->col,
-                       info->colf,
-                       info->linearcol,
-                       info->zp,
-                       info->zfp);
-  }
-}
-
-/* Returns mouse position in image space. */
-bool ED_space_node_get_position(
-    Main *bmain, SpaceNode *snode, struct ARegion *ar, const int mval[2], float fpos[2])
-{
-  if (!ED_node_is_compositor(snode) || (snode->flag & SNODE_BACKDRAW) == 0) {
-    return false;
-  }
-
-  void *lock;
-  Image *ima = BKE_image_ensure_viewer(bmain, IMA_TYPE_COMPOSITE, "Viewer Node");
-  ImBuf *ibuf = BKE_image_acquire_ibuf(ima, NULL, &lock);
-  if (!ibuf) {
-    BKE_image_release_ibuf(ima, ibuf, lock);
-    return false;
-  }
-
-  /* map the mouse coords to the backdrop image space */
-  float bufx = ibuf->x * snode->zoom;
-  float bufy = ibuf->y * snode->zoom;
-  fpos[0] = (bufx > 0.0f ? ((float)mval[0] - 0.5f * ar->winx - snode->xof) / bufx + 0.5f : 0.0f);
-  fpos[1] = (bufy > 0.0f ? ((float)mval[1] - 0.5f * ar->winy - snode->yof) / bufy + 0.5f : 0.0f);
-
-  BKE_image_release_ibuf(ima, ibuf, lock);
-  return true;
-}
-
-/* Returns color in linear space, matching ED_space_image_color_sample().
- * And here we've got recursion in the comments tips...
- */
-bool ED_space_node_color_sample(
-    Main *bmain, SpaceNode *snode, ARegion *region, const int mval[2], float r_col[3])
-{
-  void *lock;
-  Image *ima;
-  ImBuf *ibuf;
-  float fx, fy, bufx, bufy;
-  bool ret = false;
-
-  if (!ED_node_is_compositor(snode) || (snode->flag & SNODE_BACKDRAW) == 0) {
-    /* use viewer image for color sampling only if we're in compositor tree
-     * with backdrop enabled
-     */
-    return false;
-  }
-
-  ima = BKE_image_ensure_viewer(bmain, IMA_TYPE_COMPOSITE, "Viewer Node");
-  ibuf = BKE_image_acquire_ibuf(ima, NULL, &lock);
-  if (!ibuf) {
-    return false;
-  }
-
-  /* map the mouse coords to the backdrop image space */
-  bufx = ibuf->x * snode->zoom;
-  bufy = ibuf->y * snode->zoom;
-  fx = (bufx > 0.0f ? ((float)mval[0] - 0.5f * region->winx - snode->xof) / bufx + 0.5f : 0.0f);
-  fy = (bufy > 0.0f ? ((float)mval[1] - 0.5f * region->winy - snode->yof) / bufy + 0.5f : 0.0f);
-
-  if (fx >= 0.0f && fy >= 0.0f && fx < 1.0f && fy < 1.0f) {
-    const float *fp;
-    uchar *cp;
-    int x = (int)(fx * ibuf->x), y = (int)(fy * ibuf->y);
-
-    CLAMP(x, 0, ibuf->x - 1);
-    CLAMP(y, 0, ibuf->y - 1);
-
-    if (ibuf->rect_float) {
-      fp = (ibuf->rect_float + (ibuf->channels) * (y * ibuf->x + x));
-      /* #IB_PROFILE_NONE is default but in fact its linear. */
-      copy_v3_v3(r_col, fp);
-      ret = true;
-    }
-    else if (ibuf->rect) {
-      cp = (uchar *)(ibuf->rect + y * ibuf->x + x);
-      rgb_uchar_to_float(r_col, cp);
-      IMB_colormanagement_colorspace_to_scene_linear_v3(r_col, ibuf->rect_colorspace);
-      ret = true;
-    }
-  }
-
-  BKE_image_release_ibuf(ima, ibuf, lock);
-
-  return ret;
-}
-
-static void sample_apply(bContext *C, wmOperator *op, const wmEvent *event)
-{
-  Main *bmain = CTX_data_main(C);
-  SpaceNode *snode = CTX_wm_space_node(C);
-  ARegion *region = CTX_wm_region(C);
-  ImageSampleInfo *info = op->customdata;
-  void *lock;
-  Image *ima;
-  ImBuf *ibuf;
-  float fx, fy, bufx, bufy;
-
-  ima = BKE_image_ensure_viewer(bmain, IMA_TYPE_COMPOSITE, "Viewer Node");
-  ibuf = BKE_image_acquire_ibuf(ima, NULL, &lock);
-  if (!ibuf) {
-    info->draw = 0;
-    return;
-  }
-
-  if (!ibuf->rect) {
-    IMB_rect_from_float(ibuf);
-  }
-
-  /* map the mouse coords to the backdrop image space */
-  bufx = ibuf->x * snode->zoom;
-  bufy = ibuf->y * snode->zoom;
-  fx = (bufx > 0.0f ? ((float)event->mval[0] - 0.5f * region->winx - snode->xof) / bufx + 0.5f :
-                      0.0f);
-  fy = (bufy > 0.0f ? ((float)event->mval[1] - 0.5f * region->winy - snode->yof) / bufy + 0.5f :
-                      0.0f);
-
-  if (fx >= 0.0f && fy >= 0.0f && fx < 1.0f && fy < 1.0f) {
-    const float *fp;
-    uchar *cp;
-    int x = (int)(fx * ibuf->x), y = (int)(fy * ibuf->y);
-
-    CLAMP(x, 0, ibuf->x - 1);
-    CLAMP(y, 0, ibuf->y - 1);
-
-    info->x = x;
-    info->y = y;
-    info->draw = 1;
-    info->channels = ibuf->channels;
-
-    info->zp = NULL;
-    info->zfp = NULL;
-
-    if (ibuf->rect) {
-      cp = (uchar *)(ibuf->rect + y * ibuf->x + x);
-
-      info->col[0] = cp[0];
-      info->col[1] = cp[1];
-      info->col[2] = cp[2];
-      info->col[3] = cp[3];
-
-      info->colf[0] = (float)cp[0] / 255.0f;
-      info->colf[1] = (float)cp[1] / 255.0f;
-      info->colf[2] = (float)cp[2] / 255.0f;
-      info->colf[3] = (float)cp[3] / 255.0f;
-
-      copy_v4_v4(info->linearcol, info->colf);
-      IMB_colormanagement_colorspace_to_scene_linear_v4(
-          info->linearcol, false, ibuf->rect_colorspace);
-
-      info->color_manage = true;
-    }
-    if (ibuf->rect_float) {
-      fp = (ibuf->rect_float + (ibuf->channels) * (y * ibuf->x + x));
-
-      info->colf[0] = fp[0];
-      info->colf[1] = fp[1];
-      info->colf[2] = fp[2];
-      info->colf[3] = fp[3];
-
-      info->color_manage = true;
-    }
-
-    if (ibuf->zbuf) {
-      info->z = ibuf->zbuf[y * ibuf->x + x];
-      info->zp = &info->z;
-    }
-    if (ibuf->zbuf_float) {
-      info->zf = ibuf->zbuf_float[y * ibuf->x + x];
-      info->zfp = &info->zf;
-    }
-
-    ED_node_sample_set(info->colf);
-  }
-  else {
-    info->draw = 0;
-    ED_node_sample_set(NULL);
-  }
-
-  BKE_image_release_ibuf(ima, ibuf, lock);
-
-  ED_area_tag_redraw(CTX_wm_area(C));
-}
-
-static void sample_exit(bContext *C, wmOperator *op)
-{
-  ImageSampleInfo *info = op->customdata;
-
-  ED_node_sample_set(NULL);
-  ED_region_draw_cb_exit(info->art, info->draw_handle);
-  ED_area_tag_redraw(CTX_wm_area(C));
-  MEM_freeN(info);
-}
-
-static int sample_invoke(bContext *C, wmOperator *op, const wmEvent *event)
-{
-  SpaceNode *snode = CTX_wm_space_node(C);
-  ARegion *region = CTX_wm_region(C);
-  ImageSampleInfo *info;
-
-  if (!ED_node_is_compositor(snode) || !(snode->flag & SNODE_BACKDRAW)) {
-    return OPERATOR_CANCELLED;
-  }
-
-  info = MEM_callocN(sizeof(ImageSampleInfo), "ImageSampleInfo");
-  info->art = region->type;
-  info->draw_handle = ED_region_draw_cb_activate(
-      region->type, sample_draw, info, REGION_DRAW_POST_PIXEL);
-  op->customdata = info;
-
-  sample_apply(C, op, event);
-
-  WM_event_add_modal_handler(C, op);
-
-  return OPERATOR_RUNNING_MODAL;
-}
-
-static int sample_modal(bContext *C, wmOperator *op, const wmEvent *event)
-{
-  switch (event->type) {
-    case LEFTMOUSE:
-    case RIGHTMOUSE: /* XXX hardcoded */
-      if (event->val == KM_RELEASE) {
-        sample_exit(C, op);
-        return OPERATOR_CANCELLED;
-      }
-      break;
-    case MOUSEMOVE:
-      sample_apply(C, op, event);
-      break;
-  }
-
-  return OPERATOR_RUNNING_MODAL;
-}
-
-static void sample_cancel(bContext *C, wmOperator *op)
-{
-  sample_exit(C, op);
-}
-
-void NODE_OT_backimage_sample(wmOperatorType *ot)
-{
-  /* identifiers */
-  ot->name = "Backimage Sample";
-  ot->idname = "NODE_OT_backimage_sample";
-  ot->description = "Use mouse to sample background image";
-
-  /* api callbacks */
-  ot->invoke = sample_invoke;
-  ot->modal = sample_modal;
-  ot->cancel = sample_cancel;
-  ot->poll = ED_operator_node_active;
-
-  /* flags */
-  ot->flag = OPTYPE_BLOCKING;
-}
-
-/** \} */