619 lines
22 KiB
C++
619 lines
22 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2008 Blender Foundation. All rights reserved. */
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/** \file
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* \ingroup editorui
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* Generic 2D view with should allow drawing grids,
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* panning, zooming, scrolling, .. etc.
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*/
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#pragma once
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#include "BLI_compiler_attrs.h"
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#include "BLI_rect.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* -------------------------------------------------------------------- */
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/** \name General Defines
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* \{ */
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/** Generic value to use when coordinate lies out of view when converting. */
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#define V2D_IS_CLIPPED 12000
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/**
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* Common View2D view types.
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*
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* \note only define a type here if it completely sets all (+/- a few) of the relevant flags and
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* settings for a View2D region, and that set of settings is used in more than one specific place.
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*/
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enum eView2D_CommonViewTypes {
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/** custom view type (region has defined all necessary flags already). */
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V2D_COMMONVIEW_CUSTOM = -1,
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/** standard (only use this when setting up a new view, as a sensible base for most settings). */
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V2D_COMMONVIEW_STANDARD,
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/** List-view (i.e. Outliner). */
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V2D_COMMONVIEW_LIST,
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/** Stack-view (this is basically a list where new items are added at the top). */
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V2D_COMMONVIEW_STACK,
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/** headers (this is basically the same as list-view, but no Y-panning). */
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V2D_COMMONVIEW_HEADER,
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/** UI region containing panels. */
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V2D_COMMONVIEW_PANELS_UI,
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};
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Defines for Scroll Bars
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* \{ */
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/** Scroll bar area. */
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/* Maximum has to include outline which varies with line width. */
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#define V2D_SCROLL_HEIGHT ((0.45f * U.widget_unit) + (2.0f * U.pixelsize))
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#define V2D_SCROLL_WIDTH ((0.45f * U.widget_unit) + (2.0f * U.pixelsize))
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/* Alpha of scroll-bar when at minimum size. */
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#define V2D_SCROLL_MIN_ALPHA (0.4f)
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/* Minimum size needs to include outline which varies with line width. */
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#define V2D_SCROLL_MIN_WIDTH ((5.0f * U.dpi_fac) + (2.0f * U.pixelsize))
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/* When to start showing the full-width scroller. */
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#define V2D_SCROLL_HIDE_WIDTH (AREAMINX * U.dpi_fac)
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#define V2D_SCROLL_HIDE_HEIGHT (HEADERY * U.dpi_fac)
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/** Scroll bars with 'handles' used for scale (zoom). */
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#define V2D_SCROLL_HANDLE_HEIGHT (0.6f * U.widget_unit)
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#define V2D_SCROLL_HANDLE_WIDTH (0.6f * U.widget_unit)
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/** Scroll bar with 'handles' hot-spot radius for cursor proximity. */
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#define V2D_SCROLL_HANDLE_SIZE_HOTSPOT (0.6f * U.widget_unit)
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/** Don't allow scroll thumb to show below this size (so it's never too small to click on). */
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#define V2D_SCROLL_THUMB_SIZE_MIN (30.0 * UI_DPI_FAC)
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Define for #UI_view2d_sync
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* \{ */
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/* means copy it from another v2d */
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#define V2D_LOCK_SET 0
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/* means copy it to the other v2ds */
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#define V2D_LOCK_COPY 1
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Macros
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* \{ */
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/* Test if mouse in a scroll-bar (assume that scroller availability has been tested). */
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#define IN_2D_VERT_SCROLL(v2d, co) (BLI_rcti_isect_pt_v(&v2d->vert, co))
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#define IN_2D_HORIZ_SCROLL(v2d, co) (BLI_rcti_isect_pt_v(&v2d->hor, co))
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#define IN_2D_VERT_SCROLL_RECT(v2d, rct) (BLI_rcti_isect(&v2d->vert, rct, NULL))
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#define IN_2D_HORIZ_SCROLL_RECT(v2d, rct) (BLI_rcti_isect(&v2d->hor, rct, NULL))
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Forward Declarations
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* \{ */
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struct View2D;
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struct View2DScrollers;
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struct ARegion;
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struct Scene;
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struct ScrArea;
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struct bContext;
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struct bScreen;
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struct rctf;
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struct rcti;
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struct wmEvent;
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struct wmGizmoGroupType;
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struct wmKeyConfig;
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struct wmOperator;
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struct wmOperatorType;
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typedef struct View2DScrollers View2DScrollers;
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Prototypes
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* \{ */
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/**
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* Refresh and validation (of view rects).
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*
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* Initialize all relevant View2D data (including view rects if first time)
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* and/or refresh mask sizes after view resize.
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*
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* - For some of these presets, it is expected that the region will have defined some
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* additional settings necessary for the customization of the 2D viewport to its requirements
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* - This function should only be called from region init() callbacks, where it is expected that
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* this is called before #UI_view2d_size_update(),
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* as this one checks that the rects are properly initialized.
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*/
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void UI_view2d_region_reinit(struct View2D *v2d, short type, int winx, int winy);
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void UI_view2d_curRect_validate(struct View2D *v2d);
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/**
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* Restore 'cur' rect to standard orientation (i.e. optimal maximum view of tot).
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* This does not take into account if zooming the view on an axis
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* will improve the view (if allowed).
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*/
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void UI_view2d_curRect_reset(struct View2D *v2d);
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bool UI_view2d_area_supports_sync(struct ScrArea *area);
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/**
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* Called by menus to activate it, or by view2d operators
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* to make sure 'related' views stay in synchrony.
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*/
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void UI_view2d_sync(struct bScreen *screen, struct ScrArea *area, struct View2D *v2dcur, int flag);
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/**
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* Perform all required updates after `v2d->cur` as been modified.
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* This includes like validation view validation (#UI_view2d_curRect_validate).
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*
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* Current intent is to use it from user code, such as view navigation and zoom operations.
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*/
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void UI_view2d_curRect_changed(const struct bContext *C, struct View2D *v2d);
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void UI_view2d_totRect_set(struct View2D *v2d, int width, int height);
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/**
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* Change the size of the maximum viewable area (i.e. 'tot' rect).
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*/
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void UI_view2d_totRect_set_resize(struct View2D *v2d, int width, int height, bool resize);
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void UI_view2d_mask_from_win(const struct View2D *v2d, struct rcti *r_mask);
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void UI_view2d_zoom_cache_reset(void);
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name View Matrix Operations
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* \{ */
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/**
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* Set view matrices to use 'cur' rect as viewing frame for View2D drawing.
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*/
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void UI_view2d_view_ortho(const struct View2D *v2d);
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/**
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* Set view matrices to only use one axis of 'cur' only
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*
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* \param xaxis: if non-zero, only use cur x-axis,
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* otherwise use cur-yaxis (mostly this will be used for x).
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*/
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void UI_view2d_view_orthoSpecial(struct ARegion *region, struct View2D *v2d, bool xaxis);
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/**
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* Restore view matrices after drawing.
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*/
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void UI_view2d_view_restore(const struct bContext *C);
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Grid Drawing
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* \{ */
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/**
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* Draw a multi-level grid in given 2d-region.
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*/
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void UI_view2d_multi_grid_draw(
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const struct View2D *v2d, int colorid, float step, int level_size, int totlevels);
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/**
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* Draw a multi-level grid of dots, with a dynamic number of levels based on the fading.
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*
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* \param grid_color_id: The theme color used for the points. Faded dynamically based on zoom.
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* \param min_step: The base size of the grid. At different zoom levels, the visible grid may have
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* a larger step size.
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* \param grid_subdivisions: The maximum number of sub-levels drawn at once.
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*/
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void UI_view2d_dot_grid_draw(const struct View2D *v2d,
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int grid_color_id,
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float min_step,
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int grid_subdivisions);
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void UI_view2d_draw_lines_y__values(const struct View2D *v2d);
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void UI_view2d_draw_lines_x__values(const struct View2D *v2d);
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void UI_view2d_draw_lines_x__discrete_values(const struct View2D *v2d, bool display_minor_lines);
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void UI_view2d_draw_lines_x__discrete_time(const struct View2D *v2d,
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const struct Scene *scene,
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bool display_minor_lines);
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void UI_view2d_draw_lines_x__discrete_frames_or_seconds(const struct View2D *v2d,
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const struct Scene *scene,
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bool display_seconds,
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bool display_minor_lines);
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void UI_view2d_draw_lines_x__frames_or_seconds(const struct View2D *v2d,
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const struct Scene *scene,
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bool display_seconds);
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float UI_view2d_grid_resolution_x__frames_or_seconds(const struct View2D *v2d,
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const struct Scene *scene,
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bool display_seconds);
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float UI_view2d_grid_resolution_y__values(const struct View2D *v2d);
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/**
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* Scale indicator text drawing.
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*/
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void UI_view2d_draw_scale_y__values(const struct ARegion *region,
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const struct View2D *v2d,
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const struct rcti *rect,
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int colorid);
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void UI_view2d_draw_scale_y__block(const struct ARegion *region,
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const struct View2D *v2d,
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const struct rcti *rect,
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int colorid);
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void UI_view2d_draw_scale_x__discrete_frames_or_seconds(const struct ARegion *region,
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const struct View2D *v2d,
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const struct rcti *rect,
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const struct Scene *scene,
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bool display_seconds,
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int colorid);
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void UI_view2d_draw_scale_x__frames_or_seconds(const struct ARegion *region,
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const struct View2D *v2d,
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const struct rcti *rect,
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const struct Scene *scene,
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bool display_seconds,
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int colorid);
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Scroll-bar Drawing
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* \{ */
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/**
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* Calculate relevant scroller properties.
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*/
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void UI_view2d_scrollers_calc(struct View2D *v2d,
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const struct rcti *mask_custom,
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struct View2DScrollers *r_scrollers);
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/**
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* Draw scroll-bars in the given 2D-region.
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*/
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void UI_view2d_scrollers_draw_ex(struct View2D *v2d,
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const struct rcti *mask_custom,
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bool use_full_hide);
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void UI_view2d_scrollers_draw(struct View2D *v2d, const struct rcti *mask_custom);
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name List View Tools
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* \{ */
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/**
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* Get the 'cell' (row, column) that the given 2D-view coordinates
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* (i.e. in 'tot' rect space) lie in.
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*
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* \param columnwidth, rowheight: size of each 'cell'
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* \param startx, starty: coordinates (in 'tot' rect space) that the list starts from.
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* This should be (0,0) for most views. However, for those where the starting row was offsetted
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* (like for Animation Editor channel lists, to make the first entry more visible), these will be
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* the min-coordinates of the first item.
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* \param viewx, viewy: 2D-coordinates (in 2D-view / 'tot' rect space) to get the cell for
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* \param r_column, r_row: The 'coordinates' of the relevant 'cell'.
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*/
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void UI_view2d_listview_view_to_cell(float columnwidth,
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float rowheight,
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float startx,
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float starty,
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float viewx,
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float viewy,
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int *r_column,
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int *r_row);
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Coordinate Conversion
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* \{ */
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float UI_view2d_region_to_view_x(const struct View2D *v2d, float x);
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float UI_view2d_region_to_view_y(const struct View2D *v2d, float y);
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/**
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* Convert from screen/region space to 2d-View space
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*
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* \param x, y: coordinates to convert
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* \param r_view_x, r_view_y: resultant coordinates
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*/
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void UI_view2d_region_to_view(
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const struct View2D *v2d, float x, float y, float *r_view_x, float *r_view_y) ATTR_NONNULL();
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void UI_view2d_region_to_view_rctf(const struct View2D *v2d,
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const struct rctf *rect_src,
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struct rctf *rect_dst) ATTR_NONNULL();
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float UI_view2d_view_to_region_x(const struct View2D *v2d, float x);
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float UI_view2d_view_to_region_y(const struct View2D *v2d, float y);
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/**
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* Convert from 2d-View space to screen/region space
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* \note Coordinates are clamped to lie within bounds of region
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*
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* \param x, y: Coordinates to convert.
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* \param r_region_x, r_region_y: Resultant coordinates.
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*/
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bool UI_view2d_view_to_region_clip(
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const struct View2D *v2d, float x, float y, int *r_region_x, int *r_region_y) ATTR_NONNULL();
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bool UI_view2d_view_to_region_segment_clip(const View2D *v2d,
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const float xy_a[2],
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const float xy_b[2],
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int r_region_a[2],
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int r_region_b[2]) ATTR_NONNULL();
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/**
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* Convert from 2d-view space to screen/region space
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*
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* \note Coordinates are NOT clamped to lie within bounds of region.
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*
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* \param x, y: Coordinates to convert.
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* \param r_region_x, r_region_y: Resultant coordinates.
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*/
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void UI_view2d_view_to_region(
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const struct View2D *v2d, float x, float y, int *r_region_x, int *r_region_y) ATTR_NONNULL();
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void UI_view2d_view_to_region_fl(const struct View2D *v2d,
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float x,
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float y,
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float *r_region_x,
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float *r_region_y) ATTR_NONNULL();
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void UI_view2d_view_to_region_m4(const struct View2D *v2d, float matrix[4][4]) ATTR_NONNULL();
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void UI_view2d_view_to_region_rcti(const struct View2D *v2d,
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const struct rctf *rect_src,
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struct rcti *rect_dst) ATTR_NONNULL();
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bool UI_view2d_view_to_region_rcti_clip(const struct View2D *v2d,
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const struct rctf *rect_src,
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struct rcti *rect_dst) ATTR_NONNULL();
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Utilities
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* \{ */
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/**
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* View2D data by default resides in region, so get from region stored in context.
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*/
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struct View2D *UI_view2d_fromcontext(const struct bContext *C);
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/**
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* Same as above, but it returns region-window. Utility for pull-downs or buttons.
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*/
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struct View2D *UI_view2d_fromcontext_rwin(const struct bContext *C);
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/**
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* Get scroll-bar sizes of the current 2D view.
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* The size will be zero if the view has its scroll-bars disabled.
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*
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* \param mapped: whether to use view2d_scroll_mapped which changes flags
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*/
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void UI_view2d_scroller_size_get(const struct View2D *v2d, bool mapped, float *r_x, float *r_y);
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/**
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* Calculate the scale per-axis of the drawing-area
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*
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* Is used to inverse correct drawing of icons, etc. that need to follow view
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* but not be affected by scale
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*
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* \param r_x, r_y: scale on each axis
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*/
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void UI_view2d_scale_get(const struct View2D *v2d, float *r_x, float *r_y);
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float UI_view2d_scale_get_x(const struct View2D *v2d);
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float UI_view2d_scale_get_y(const struct View2D *v2d);
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/**
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* Same as `UI_view2d_scale_get() - 1.0f / x, y`.
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*/
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void UI_view2d_scale_get_inverse(const struct View2D *v2d, float *r_x, float *r_y);
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/**
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* Simple functions for consistent center offset access.
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* Used by node editor to shift view center for each individual node tree.
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*/
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void UI_view2d_center_get(const struct View2D *v2d, float *r_x, float *r_y);
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void UI_view2d_center_set(struct View2D *v2d, float x, float y);
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/**
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* Simple pan function
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* (0.0, 0.0) bottom left
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* (0.5, 0.5) center
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* (1.0, 1.0) top right.
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*/
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void UI_view2d_offset(struct View2D *v2d, float xfac, float yfac);
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/**
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* Check if mouse is within scrollers
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*
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* \param xy: Mouse coordinates in screen (not region) space.
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* \param r_scroll: Return argument for the mapped view2d scroll flag.
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*
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* \return appropriate code for match.
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* - 'h' = in horizontal scroller.
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* - 'v' = in vertical scroller.
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* - 0 = not in scroller.
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*/
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char UI_view2d_mouse_in_scrollers_ex(const struct ARegion *region,
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const struct View2D *v2d,
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const int xy[2],
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int *r_scroll) ATTR_NONNULL(1, 2, 3, 4);
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char UI_view2d_mouse_in_scrollers(const struct ARegion *region,
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const struct View2D *v2d,
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const int xy[2]) ATTR_NONNULL(1, 2, 3);
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char UI_view2d_rect_in_scrollers_ex(const struct ARegion *region,
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const struct View2D *v2d,
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const struct rcti *rect,
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int *r_scroll) ATTR_NONNULL(1, 2, 3);
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char UI_view2d_rect_in_scrollers(const struct ARegion *region,
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const struct View2D *v2d,
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const struct rcti *rect) ATTR_NONNULL(1, 2, 3);
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/**
|
|
* Cached text drawing in v2d, to allow pixel-aligned draw as post process.
|
|
*/
|
|
void UI_view2d_text_cache_add(struct View2D *v2d,
|
|
float x,
|
|
float y,
|
|
const char *str,
|
|
size_t str_len,
|
|
const unsigned char col[4]);
|
|
/**
|
|
* No clip (yet).
|
|
*/
|
|
void UI_view2d_text_cache_add_rectf(struct View2D *v2d,
|
|
const struct rctf *rect_view,
|
|
const char *str,
|
|
size_t str_len,
|
|
const unsigned char col[4]);
|
|
void UI_view2d_text_cache_draw(struct ARegion *region);
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Operators
|
|
* \{ */
|
|
|
|
void ED_operatortypes_view2d(void);
|
|
void ED_keymap_view2d(struct wmKeyConfig *keyconf);
|
|
|
|
/**
|
|
* Will start timer if appropriate.
|
|
* the arguments are the desired situation.
|
|
*/
|
|
void UI_view2d_smooth_view(const struct bContext *C,
|
|
struct ARegion *region,
|
|
const struct rctf *cur,
|
|
int smooth_viewtx);
|
|
|
|
#define UI_MARKER_MARGIN_Y (42 * UI_DPI_FAC)
|
|
#define UI_TIME_SCRUB_MARGIN_Y (23 * UI_DPI_FAC)
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Gizmo Types
|
|
* \{ */
|
|
|
|
/* view2d_gizmo_navigate.c */
|
|
|
|
/**
|
|
* Caller defines the name for gizmo group.
|
|
*/
|
|
void VIEW2D_GGT_navigate_impl(struct wmGizmoGroupType *gzgt, const char *idname);
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Edge Pan
|
|
* \{ */
|
|
|
|
/**
|
|
* Custom-data for view panning operators.
|
|
*/
|
|
typedef struct View2DEdgePanData {
|
|
/** Screen where view pan was initiated. */
|
|
struct bScreen *screen;
|
|
/** Area where view pan was initiated. */
|
|
struct ScrArea *area;
|
|
/** Region where view pan was initiated. */
|
|
struct ARegion *region;
|
|
/** View2d we're operating in. */
|
|
struct View2D *v2d;
|
|
/** Limit maximum pannable area. */
|
|
struct rctf limit;
|
|
|
|
/** Panning should only start once being in the inside rect once (e.g. adding nodes can happen
|
|
* outside). */
|
|
bool enabled;
|
|
/** Inside distance in UI units from the edge of the region within which to start panning. */
|
|
float inside_pad;
|
|
/** Outside distance in UI units from the edge of the region at which to stop panning. */
|
|
float outside_pad;
|
|
/**
|
|
* Width of the zone in UI units where speed increases with distance from the edge.
|
|
* At the end of this zone max speed is reached.
|
|
*/
|
|
float speed_ramp;
|
|
/** Maximum speed in UI units per second. */
|
|
float max_speed;
|
|
/** Delay in seconds before maximum speed is reached. */
|
|
float delay;
|
|
/** Influence factor for view zoom:
|
|
* 0 = Constant speed in UI units
|
|
* 1 = Constant speed in view space, UI speed slows down when zooming out
|
|
*/
|
|
float zoom_influence;
|
|
|
|
/** Initial view rect. */
|
|
rctf initial_rect;
|
|
|
|
/** Amount to move view relative to zoom. */
|
|
float facx, facy;
|
|
|
|
/* Timers. */
|
|
double edge_pan_last_time;
|
|
double edge_pan_start_time_x, edge_pan_start_time_y;
|
|
} View2DEdgePanData;
|
|
|
|
bool UI_view2d_edge_pan_poll(struct bContext *C);
|
|
|
|
void UI_view2d_edge_pan_init(struct bContext *C,
|
|
struct View2DEdgePanData *vpd,
|
|
float inside_pad,
|
|
float outside_pad,
|
|
float speed_ramp,
|
|
float max_speed,
|
|
float delay,
|
|
float zoom_influence);
|
|
|
|
/**
|
|
* Set area which can be panned
|
|
*/
|
|
void UI_view2d_edge_pan_set_limits(
|
|
struct View2DEdgePanData *vpd, float xmin, float xmax, float ymin, float ymax);
|
|
|
|
void UI_view2d_edge_pan_reset(struct View2DEdgePanData *vpd);
|
|
|
|
/**
|
|
* Apply transform to view (i.e. adjust 'cur' rect).
|
|
*/
|
|
void UI_view2d_edge_pan_apply(struct bContext *C, struct View2DEdgePanData *vpd, const int xy[2])
|
|
ATTR_NONNULL(1, 2, 3);
|
|
|
|
/**
|
|
* Apply transform to view using mouse events.
|
|
*/
|
|
void UI_view2d_edge_pan_apply_event(struct bContext *C,
|
|
struct View2DEdgePanData *vpd,
|
|
const struct wmEvent *event);
|
|
|
|
void UI_view2d_edge_pan_cancel(struct bContext *C, struct View2DEdgePanData *vpd);
|
|
|
|
void UI_view2d_edge_pan_operator_properties(struct wmOperatorType *ot);
|
|
|
|
void UI_view2d_edge_pan_operator_properties_ex(struct wmOperatorType *ot,
|
|
float inside_pad,
|
|
float outside_pad,
|
|
float speed_ramp,
|
|
float max_speed,
|
|
float delay,
|
|
float zoom_influence);
|
|
|
|
/**
|
|
* Initialize panning data with operator settings.
|
|
*/
|
|
void UI_view2d_edge_pan_operator_init(struct bContext *C,
|
|
struct View2DEdgePanData *vpd,
|
|
struct wmOperator *op);
|
|
|
|
/** \} */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|