172 lines
5.5 KiB
C
172 lines
5.5 KiB
C
/* SPDX-FileCopyrightText: 2001-2002 NaN Holding BV. All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup DNA
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*/
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#pragma once
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#include "DNA_vec_types.h"
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/* ---------------------------------- */
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/** View 2D data - stored per region. */
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typedef struct View2D {
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/** Tot - area that data can be drawn in; cur - region of tot that is visible in viewport. */
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rctf tot, cur;
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/** Vert - vertical scroll-bar region; hor - horizontal scroll-bar region. */
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rcti vert, hor;
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/** Mask - region (in screen-space) within which 'cur' can be viewed. */
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rcti mask;
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/** Min/max sizes of 'cur' rect (only when keepzoom not set). */
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float min[2], max[2];
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/** Allowable zoom factor range (only when (keepzoom & V2D_LIMITZOOM)) is set. */
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float minzoom, maxzoom;
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/** Scroll - scroll-bars to display (bit-flag). */
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short scroll;
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/** Scroll_ui - temp settings used for UI drawing of scrollers. */
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short scroll_ui;
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/** Keeptot - 'cur' rect cannot move outside the 'tot' rect? */
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short keeptot;
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/** Keepzoom - axes that zooming cannot occur on, and also clamp within zoom-limits. */
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short keepzoom;
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/** Keepofs - axes that translation is not allowed to occur on. */
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short keepofs;
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/** Settings. */
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short flag;
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/** Alignment of content in totrect. */
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short align;
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/** Storage of current winx/winy values, set in UI_view2d_size_update. */
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short winx, winy;
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/**
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* Storage of previous winx/winy values encountered by #UI_view2d_curRect_validate(),
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* for keep-aspect.
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*/
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short oldwinx, oldwiny;
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/** Pivot point for transforms (rotate and scale). */
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short around;
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/* Usually set externally (as in, not in view2d files). */
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/** Alpha of vertical and horizontal scroll-bars (range is [0, 255]). */
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char alpha_vert, alpha_hor;
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char _pad[2];
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/** When set (not 0), determines how many pixels to scroll when scrolling an entire page.
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* Otherwise the height of #View2D.mask is used. */
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float page_size_y;
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/* animated smooth view */
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struct SmoothView2DStore *sms;
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struct wmTimer *smooth_timer;
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} View2D;
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/* ---------------------------------- */
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/** View zooming restrictions, per axis (#View2D.keepzoom) */
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enum {
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/* zoom is clamped to lie within limits set by minzoom and maxzoom */
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V2D_LIMITZOOM = (1 << 0),
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/* aspect ratio is maintained on view resize */
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V2D_KEEPASPECT = (1 << 1),
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/* zoom is kept when the window resizes */
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V2D_KEEPZOOM = (1 << 2),
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/* zooming on x-axis is not allowed */
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V2D_LOCKZOOM_X = (1 << 8),
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/* zooming on y-axis is not allowed */
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V2D_LOCKZOOM_Y = (1 << 9),
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};
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/** View panning restrictions, per axis (#View2D.keepofs). */
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enum {
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/* panning on x-axis is not allowed */
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V2D_LOCKOFS_X = (1 << 1),
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/* panning on y-axis is not allowed */
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V2D_LOCKOFS_Y = (1 << 2),
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/* on resize, keep the x offset */
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V2D_KEEPOFS_X = (1 << 3),
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/* on resize, keep the y offset */
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V2D_KEEPOFS_Y = (1 << 4),
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};
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/** View extent restrictions (#View2D.keeptot). */
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enum {
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/** 'cur' view can be out of extents of 'tot' */
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V2D_KEEPTOT_FREE = 0,
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/** 'cur' rect is adjusted so that it satisfies the extents of 'tot', with some compromises */
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V2D_KEEPTOT_BOUNDS = 1,
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/** 'cur' rect is moved so that the 'minimum' bounds of the 'tot' rect are always respected
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* (particularly in x-axis) */
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V2D_KEEPTOT_STRICT = 2,
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};
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/** General refresh settings (#View2D.flag). */
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enum {
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/* global view2d horizontal locking (for showing same time interval) */
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V2D_VIEWSYNC_SCREEN_TIME = (1 << 0),
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/* within area (i.e. between regions) view2d vertical locking */
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V2D_VIEWSYNC_AREA_VERTICAL = (1 << 1),
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/* apply pixel offsets on x-axis when setting view matrices */
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V2D_PIXELOFS_X = (1 << 2),
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/* apply pixel offsets on y-axis when setting view matrices */
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V2D_PIXELOFS_Y = (1 << 3),
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/* zoom, pan or similar action is in progress */
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V2D_IS_NAVIGATING = (1 << 9),
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/* view settings need to be set still... */
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V2D_IS_INIT = (1 << 10),
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/* Ensure scrolling always snaps to multiples of #View2D.page_size_y or the #View2D.mask height
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* if this is 0. Zooming doesn't respect this. */
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V2D_SNAP_TO_PAGESIZE_Y = (1 << 11),
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};
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/** Scroller flags for View2D (#View2D.scroll). */
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enum {
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/* Left scroll-bar. */
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V2D_SCROLL_LEFT = (1 << 0),
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V2D_SCROLL_RIGHT = (1 << 1),
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V2D_SCROLL_VERTICAL = (V2D_SCROLL_LEFT | V2D_SCROLL_RIGHT),
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/* Horizontal scroll-bar. */
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V2D_SCROLL_TOP = (1 << 2),
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V2D_SCROLL_BOTTOM = (1 << 3),
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/* UNUSED = (1 << 4), */
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V2D_SCROLL_HORIZONTAL = (V2D_SCROLL_TOP | V2D_SCROLL_BOTTOM),
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/* display vertical scale handles */
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V2D_SCROLL_VERTICAL_HANDLES = (1 << 5),
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/* display horizontal scale handles */
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V2D_SCROLL_HORIZONTAL_HANDLES = (1 << 6),
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/* Induce hiding of scroll-bar - set by region drawing in response to size of region. */
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V2D_SCROLL_VERTICAL_HIDE = (1 << 7),
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V2D_SCROLL_HORIZONTAL_HIDE = (1 << 8),
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/* Scroll-bar extends beyond its available window -
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* set when calculating scroll-bar for drawing */
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V2D_SCROLL_VERTICAL_FULLR = (1 << 9),
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V2D_SCROLL_HORIZONTAL_FULLR = (1 << 10),
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};
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/** scroll_ui, activate flag for drawing. */
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enum {
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V2D_SCROLL_H_ACTIVE = (1 << 0),
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V2D_SCROLL_V_ACTIVE = (1 << 1),
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};
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/**
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* Alignment flags for `totrect`, flags use 'shading-out' convention (#View2D.align).
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*/
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enum {
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/* all quadrants free */
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V2D_ALIGN_FREE = 0,
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/* horizontal restrictions */
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V2D_ALIGN_NO_POS_X = (1 << 0),
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V2D_ALIGN_NO_NEG_X = (1 << 1),
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/* vertical restrictions */
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V2D_ALIGN_NO_POS_Y = (1 << 2),
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V2D_ALIGN_NO_NEG_Y = (1 << 3),
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};
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