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/**
* blenlib/DNA_view2d_types.h (mar-2001 nzc)
*
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): Joshua Leung
*
* ***** END GPL LICENSE BLOCK *****
*/
#ifndef DNA_VIEW2D_TYPES_H
#define DNA_VIEW2D_TYPES_H
#include "DNA_vec_types.h"
/* ---------------------------------- */
/* View 2D data - stored per region */
typedef struct View2D {
rctf tot, cur; /* tot - area that data can be drawn in; cur - region of tot that is visible in viewport */
rcti vert, hor; /* vert - vertical scrollbar region; hor - horizontal scrollbar region */
rcti mask; /* mask - region (in screenspace) within which 'cur' can be viewed */
float min[2], max[2]; /* min/max sizes of 'cur' rect (only when keepzoom not set) */
float minzoom, maxzoom; /* self explanatory. allowable zoom factor range (only when keepzoom set) */
short scroll; /* scroll - scrollbars to display (bitflag) */
short scroll_ui; /* scroll_ui - temp settings used for UI drawing of scrollers */
short keeptot; /* keeptot - 'cur' rect cannot move outside the 'tot' rect? */
short keepzoom; /* keepzoom - axes that zooming cannot occur on, and also clamp within zoom-limits */
short keepofs; /* keepofs - axes that translation is not allowed to occur on */
short flag; /* settings */
short align; /* alignment of content in totrect */
short winx, winy; /* storage of current winx/winy values, set in UI_view2d_size_update */
short oldwinx, oldwiny; /* storage of previous winx/winy values encountered by UI_view2d_curRect_validate(), for keepaspect */
short around; /* pivot point for transforms (rotate and scale) */
float cursor[2]; /* only used in the UV view for now (for 2D-cursor) */
} View2D;
/* ---------------------------------- */
/* view zooming restrictions, per axis (v2d->keepzoom) */
/* zoom is clamped to lie within limits set by minzoom and maxzoom */
#define V2D_KEEPZOOM 0x0001
/* aspect ratio is maintained on view resize */
#define V2D_KEEPASPECT 0x0002
/* zooming on x-axis is not allowed */
#define V2D_LOCKZOOM_X 0x0100
/* zooming on y-axis is not allowed */
#define V2D_LOCKZOOM_Y 0x0200
/* view panning restrictions, per axis (v2d->keepofs) */
/* panning on x-axis is not allowed */
#define V2D_LOCKOFS_X (1<<1)
/* panning on y-axis is not allowed */
#define V2D_LOCKOFS_Y (1<<2)
/* view extent restrictions (v2d->keeptot) */
/* 'cur' view can be out of extents of 'tot' */
#define V2D_KEEPTOT_FREE 0
/* 'cur' rect is adjusted so that it satisfies the extents of 'tot', with some compromises */
#define V2D_KEEPTOT_BOUNDS 1
/* 'cur' rect is moved so that the 'minimum' bounds of the 'tot' rect are always respected (particularly in x-axis) */
#define V2D_KEEPTOT_STRICT 2
/* general refresh settings (v2d->flag) */
/* global view2d horizontal locking (for showing same time interval) */
#define V2D_VIEWSYNC_SCREEN_TIME (1<<0)
/* within area (i.e. between regions) view2d vertical locking */
#define V2D_VIEWSYNC_AREA_VERTICAL (1<<1)
/* apply pixel offsets on x-axis when setting view matrices */
#define V2D_PIXELOFS_X (1<<2)
/* apply pixel offsets on y-axis when setting view matrices */
#define V2D_PIXELOFS_Y (1<<3)
/* view settings need to be set still... */
#define V2D_IS_INITIALISED (1<<10)
/* scroller flags for View2D (v2d->scroll) */
/* left scrollbar */
#define V2D_SCROLL_LEFT (1<<0)
#define V2D_SCROLL_RIGHT (1<<1)
#define V2D_SCROLL_VERTICAL (V2D_SCROLL_LEFT|V2D_SCROLL_RIGHT)
/* horizontal scrollbar */
#define V2D_SCROLL_TOP (1<<2)
#define V2D_SCROLL_BOTTOM (1<<3)
/* special hack for outliner hscroll - prevent hanging older versions of Blender */
#define V2D_SCROLL_BOTTOM_O (1<<4)
#define V2D_SCROLL_HORIZONTAL (V2D_SCROLL_TOP|V2D_SCROLL_BOTTOM|V2D_SCROLL_BOTTOM_O)
/* scale markings - vertical */
#define V2D_SCROLL_SCALE_VERTICAL (1<<5)
/* scale markings - horizontal */
#define V2D_SCROLL_SCALE_HORIZONTAL (1<<6)
/* alignment flags for totrect, flags use 'shading-out' convention (v2d->align) */
/* all quadrants free */
#define V2D_ALIGN_FREE 0
/* horizontal restrictions */
#define V2D_ALIGN_NO_POS_X (1<<0)
#define V2D_ALIGN_NO_NEG_X (1<<1)
/* vertical restrictions */
#define V2D_ALIGN_NO_POS_Y (1<<2)
#define V2D_ALIGN_NO_NEG_Y (1<<3)
#endif
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