DNA_view2d_types.h

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/* SPDX-FileCopyrightText: 2001-2002 NaN Holding BV. All rights reserved.
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */

 
#pragma once
 
#include "DNA_vec_types.h"
 
/* ---------------------------------- */

typedef struct View2D {
  rctf tot;
  rctf cur;
  rcti vert;
  rcti hor;
  rcti mask;

  float min[2], max[2];
  float minzoom, maxzoom;

  short scroll;
  short scroll_ui;

  short keeptot;
  short keepzoom;
  short keepofs;

  short flag;
  short align;

  short winx, winy;
  short oldwinx, oldwiny;

  short around;
 
  /* Usually set externally (as in, not in view2d files). */
  char alpha_vert, alpha_hor;
 
  char _pad[2];
  float page_size_y;
 
  /* animated smooth view */
  struct SmoothView2DStore *sms;
  struct wmTimer *smooth_timer;
} View2D;
 
/* ---------------------------------- */

enum {
  /* zoom is clamped to lie within limits set by minzoom and maxzoom */
  V2D_LIMITZOOM = (1 << 0),
  /* aspect ratio is maintained on view resize */
  V2D_KEEPASPECT = (1 << 1),
  /* zoom is kept when the window resizes */
  V2D_KEEPZOOM = (1 << 2),
  /* zooming on x-axis is not allowed */
  V2D_LOCKZOOM_X = (1 << 8),
  /* zooming on y-axis is not allowed */
  V2D_LOCKZOOM_Y = (1 << 9),
};

enum {
  /* panning on x-axis is not allowed */
  V2D_LOCKOFS_X = (1 << 1),
  /* panning on y-axis is not allowed */
  V2D_LOCKOFS_Y = (1 << 2),
  /* on resize, keep the x offset */
  V2D_KEEPOFS_X = (1 << 3),
  /* on resize, keep the y offset */
  V2D_KEEPOFS_Y = (1 << 4),
};

enum {
  V2D_KEEPTOT_FREE = 0,
  V2D_KEEPTOT_BOUNDS = 1,
  V2D_KEEPTOT_STRICT = 2,
};

enum {
  /* global view2d horizontal locking (for showing same time interval) */
  V2D_VIEWSYNC_SCREEN_TIME = (1 << 0),
  /* within area (i.e. between regions) view2d vertical locking */
  V2D_VIEWSYNC_AREA_VERTICAL = (1 << 1),
  /* apply pixel offsets on x-axis when setting view matrices */
  V2D_PIXELOFS_X = (1 << 2),
  /* apply pixel offsets on y-axis when setting view matrices */
  V2D_PIXELOFS_Y = (1 << 3),
  /* zoom, pan or similar action is in progress */
  V2D_IS_NAVIGATING = (1 << 9),
  /* view settings need to be set still... */
  V2D_IS_INIT = (1 << 10),
  /* Ensure scrolling always snaps to multiples of #View2D.page_size_y or the #View2D.mask height
   * if this is 0. Zooming doesn't respect this. */
  V2D_SNAP_TO_PAGESIZE_Y = (1 << 11),
  /* Ignore keepofs flags only during zoom.
   * Allows for different behavior between zooming and area resize. */
  V2D_ZOOM_IGNORE_KEEPOFS = (1 << 12),
};

enum {
  /* Left scroll-bar. */
  V2D_SCROLL_LEFT = (1 << 0),
  V2D_SCROLL_RIGHT = (1 << 1),
  V2D_SCROLL_VERTICAL = (V2D_SCROLL_LEFT | V2D_SCROLL_RIGHT),
  /* Horizontal scroll-bar. */
  V2D_SCROLL_TOP = (1 << 2),
  V2D_SCROLL_BOTTOM = (1 << 3),
  /* UNUSED                    = (1 << 4), */
  V2D_SCROLL_HORIZONTAL = (V2D_SCROLL_TOP | V2D_SCROLL_BOTTOM),
  /* display vertical scale handles */
  V2D_SCROLL_VERTICAL_HANDLES = (1 << 5),
  /* display horizontal scale handles */
  V2D_SCROLL_HORIZONTAL_HANDLES = (1 << 6),
  /* Induce hiding of scroll-bar - set by region drawing in response to size of region. */
  V2D_SCROLL_VERTICAL_HIDE = (1 << 7),
  V2D_SCROLL_HORIZONTAL_HIDE = (1 << 8),
  /* Scroll-bar extends beyond its available window -
   * set when calculating scroll-bar for drawing */
  V2D_SCROLL_VERTICAL_FULLR = (1 << 9),
  V2D_SCROLL_HORIZONTAL_FULLR = (1 << 10),
};

enum {
  V2D_SCROLL_H_ACTIVE = (1 << 0),
  V2D_SCROLL_V_ACTIVE = (1 << 1),
};

enum {
  /* all quadrants free */
  V2D_ALIGN_FREE = 0,
  /* horizontal restrictions */
  V2D_ALIGN_NO_POS_X = (1 << 0),
  V2D_ALIGN_NO_NEG_X = (1 << 1),
  /* vertical restrictions */
  V2D_ALIGN_NO_POS_Y = (1 << 2),
  V2D_ALIGN_NO_NEG_Y = (1 << 3),
};