mutt_window.h File Reference

Window management. More...

#include "config.h"
#include <stdbool.h>
#include <stdint.h>
#include "mutt/lib.h"

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Data Structures
struct	WindowState
	The current, or old, state of a Window. More...
struct	MuttWindow
struct	EventWindow
	An Event that happened to a Window. More...

Macros
#define	MUTT_WIN_SIZE_UNLIMITED   -1
	Use as much space as possible.
#define	WA_NO_FLAGS   0
	No flags are set.
#define	WA_REFLOW   (1 << 0)
	Reflow the Window and its children.
#define	WA_RECALC   (1 << 1)
	Recalculate the contents of the Window.
#define	WA_REPAINT   (1 << 2)
	Redraw the contents of the Window.
#define	WN_NO_FLAGS   0
	No flags are set.
#define	WN_TALLER   (1 << 0)
	Window became taller.
#define	WN_SHORTER   (1 << 1)
	Window became shorter.
#define	WN_WIDER   (1 << 2)
	Window became wider.
#define	WN_NARROWER   (1 << 3)
	Window became narrower.
#define	WN_MOVED   (1 << 4)
	Window moved.
#define	WN_VISIBLE   (1 << 5)
	Window became visible.
#define	WN_HIDDEN   (1 << 6)
	Window became hidden.

Typedefs
typedef uint8_t	WindowActionFlags
	Flags for Actions waiting to be performed on a MuttWindow, e.g. WA_REFLOW.
typedef uint8_t	WindowNotifyFlags
	Flags for Changes to a MuttWindow, e.g. WN_TALLER.

Enumerations
enum	MuttWindowOrientation { MUTT_WIN_ORIENT_VERTICAL = 1 , MUTT_WIN_ORIENT_HORIZONTAL }
	Which way does the Window expand? More...
enum	MuttWindowSize { MUTT_WIN_SIZE_FIXED = 1 , MUTT_WIN_SIZE_MAXIMISE , MUTT_WIN_SIZE_MINIMISE }
	Control the allocation of Window space. More...
enum	WindowType {   WT_ROOT , WT_CONTAINER , WT_ALL_DIALOGS , WT_DLG_ALIAS ,   WT_DLG_ATTACHMENT , WT_DLG_AUTOCRYPT , WT_DLG_BROWSER , WT_DLG_CERTIFICATE ,   WT_DLG_COMPOSE , WT_DLG_GPGME , WT_DLG_PAGER , WT_DLG_HISTORY ,   WT_DLG_INDEX , WT_DLG_PATTERN , WT_DLG_PGP , WT_DLG_POSTPONED ,   WT_DLG_QUERY , WT_DLG_SMIME , WT_CUSTOM , WT_HELP_BAR ,   WT_INDEX , WT_MENU , WT_MESSAGE , WT_PAGER ,   WT_SIDEBAR , WT_STATUS_BAR }
	Type of Window. More...
enum	NotifyWindow {   NT_WINDOW_ADD = 1 , NT_WINDOW_DELETE , NT_WINDOW_STATE , NT_WINDOW_DIALOG ,   NT_WINDOW_FOCUS }
	Window notification types. More...

Functions
	TAILQ_HEAD (MuttWindowList, MuttWindow)
void	mutt_window_add_child (struct MuttWindow *parent, struct MuttWindow *child)
	Add a child to Window.
void	mutt_window_free (struct MuttWindow **ptr)
	Free a Window and its children.
void	mutt_window_get_coords (struct MuttWindow *win, int *row, int *col)
	Get the cursor position in the Window.
struct MuttWindow *	mutt_window_new (enum WindowType type, enum MuttWindowOrientation orient, enum MuttWindowSize size, int cols, int rows)
	Create a new Window.
void	mutt_window_reflow (struct MuttWindow *win)
	Resize a Window and its children.
struct MuttWindow *	mutt_window_remove_child (struct MuttWindow *parent, struct MuttWindow *child)
	Remove a child from a Window.
int	mutt_window_wrap_cols (int width, short wrap)
	Calculate the wrap column for a given screen width.
int	mutt_window_addch (struct MuttWindow *win, int ch)
	Write one character to a Window.
int	mutt_window_addnstr (struct MuttWindow *win, const char *str, int num)
	Write a partial string to a Window.
int	mutt_window_addstr (struct MuttWindow *win, const char *str)
	Write a string to a Window.
void	mutt_window_clearline (struct MuttWindow *win, int row)
	Clear a row of a Window.
void	mutt_window_clear (struct MuttWindow *win)
	Clear a Window.
void	mutt_window_clrtoeol (struct MuttWindow *win)
	Clear to the end of the line.
int	mutt_window_move (struct MuttWindow *win, int row, int col)
	Move the cursor in a Window.
int	mutt_window_printf (struct MuttWindow *win, const char *format,...) __attribute__((__format__(__printf__
int bool	mutt_window_is_visible (struct MuttWindow *win)
	Is the Window visible?
void	mutt_winlist_free (struct MuttWindowList *head)
	Free a tree of Windows.
struct MuttWindow *	window_find_child (struct MuttWindow *win, enum WindowType type)
	Recursively find a child Window of a given type.
struct MuttWindow *	window_find_parent (struct MuttWindow *win, enum WindowType type)
	Find a (grand-)parent of a Window by type.
void	window_notify_all (struct MuttWindow *win)
	Notify observers of changes to a Window and its children.
void	window_set_visible (struct MuttWindow *win, bool visible)
	Set a Window visible or hidden.
struct MuttWindow *	window_set_focus (struct MuttWindow *win)
	Set the Window focus.
struct MuttWindow *	window_get_focus (void)
	Get the currently focused Window.
bool	window_is_focused (const struct MuttWindow *win)
	Does the given Window have the focus?
void	window_redraw (struct MuttWindow *win)
	Reflow, recalc and repaint a tree of Windows.
void	window_invalidate_all (void)
	Mark all windows as in need of repaint.
const char *	mutt_window_win_name (const struct MuttWindow *win)
	Get the name of a Window.
bool	window_status_on_top (struct MuttWindow *panel, struct ConfigSubset *sub)
	Organise windows according to config variable.
bool	mutt_window_swap (struct MuttWindow *parent, struct MuttWindow *win1, struct MuttWindow *win2)
	Swap the position of two windows.

Detailed Description

Window management.

Authors

• Richard Russon
• Dennis Schön

Copyright

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, see http://www.gnu.org/licenses/.

Definition in file mutt_window.h.

Macro Definition Documentation

MUTT_WIN_SIZE_UNLIMITED

#define MUTT_WIN_SIZE_UNLIMITED   -1

Use as much space as possible.

Definition at line 53 of file mutt_window.h.

WA_NO_FLAGS

#define WA_NO_FLAGS   0

No flags are set.

Definition at line 108 of file mutt_window.h.

WA_REFLOW

#define WA_REFLOW   (1 << 0)

Reflow the Window and its children.

Definition at line 109 of file mutt_window.h.

WA_RECALC

#define WA_RECALC   (1 << 1)

Recalculate the contents of the Window.

Definition at line 110 of file mutt_window.h.

WA_REPAINT

#define WA_REPAINT   (1 << 2)

Redraw the contents of the Window.

Definition at line 111 of file mutt_window.h.

WN_NO_FLAGS

#define WN_NO_FLAGS   0

No flags are set.

Definition at line 209 of file mutt_window.h.

WN_TALLER

#define WN_TALLER   (1 << 0)

Window became taller.

Definition at line 210 of file mutt_window.h.

WN_SHORTER

#define WN_SHORTER   (1 << 1)

Window became shorter.

Definition at line 211 of file mutt_window.h.

WN_WIDER

#define WN_WIDER   (1 << 2)

Window became wider.

Definition at line 212 of file mutt_window.h.

WN_NARROWER

#define WN_NARROWER   (1 << 3)

Window became narrower.

Definition at line 213 of file mutt_window.h.

WN_MOVED

#define WN_MOVED   (1 << 4)

Window moved.

Definition at line 214 of file mutt_window.h.

WN_VISIBLE

#define WN_VISIBLE   (1 << 5)

Window became visible.

Definition at line 215 of file mutt_window.h.

WN_HIDDEN

#define WN_HIDDEN   (1 << 6)

Window became hidden.

Definition at line 216 of file mutt_window.h.

Typedef Documentation

WindowActionFlags

typedef uint8_t WindowActionFlags

Flags for Actions waiting to be performed on a MuttWindow, e.g. WA_REFLOW.

Definition at line 107 of file mutt_window.h.

WindowNotifyFlags

typedef uint8_t WindowNotifyFlags

Flags for Changes to a MuttWindow, e.g. WN_TALLER.

Definition at line 208 of file mutt_window.h.

Enumeration Type Documentation

MuttWindowOrientation

enum MuttWindowOrientation

Which way does the Window expand?

Enumerator
MUTT_WIN_ORIENT_VERTICAL	Window uses all available vertical space.
MUTT_WIN_ORIENT_HORIZONTAL	Window uses all available horizontal space.

Definition at line 37 of file mutt_window.h.

{
  MUTT_WIN_ORIENT_VERTICAL = 1, 
  MUTT_WIN_ORIENT_HORIZONTAL,   
};

MuttWindowSize

enum MuttWindowSize

Control the allocation of Window space.

Enumerator
MUTT_WIN_SIZE_FIXED	Window has a fixed size.
MUTT_WIN_SIZE_MAXIMISE	Window wants as much space as possible.
MUTT_WIN_SIZE_MINIMISE	Window size depends on its children.

Definition at line 46 of file mutt_window.h.

{
  MUTT_WIN_SIZE_FIXED = 1, 
  MUTT_WIN_SIZE_MAXIMISE,  
  MUTT_WIN_SIZE_MINIMISE,  
};

WindowType

enum WindowType

Type of Window.

Enumerator
WT_ROOT	Parent of All Windows.
WT_CONTAINER	Invisible shaping container Window.
WT_ALL_DIALOGS	Container for All Dialogs (nested Windows)
WT_DLG_ALIAS	Alias Dialog, dlg_alias()
WT_DLG_ATTACHMENT	Attachment Dialog, dlg_attachment()
WT_DLG_AUTOCRYPT	Autocrypt Dialog, dlg_autocrypt()
WT_DLG_BROWSER	Browser Dialog, dlg_browser()
WT_DLG_CERTIFICATE	Certificate Dialog, dlg_certificate()
WT_DLG_COMPOSE	Compose Dialog, dlg_compose()
WT_DLG_GPGME	GPGME Dialog, dlg_gpgme()
WT_DLG_PAGER	Pager Dialog, dlg_pager()
WT_DLG_HISTORY	History Dialog, dlg_history()
WT_DLG_INDEX	Index Dialog, dlg_index()
WT_DLG_PATTERN	Pattern Dialog, dlg_pattern()
WT_DLG_PGP	Pgp Dialog, dlg_pgp()
WT_DLG_POSTPONED	Postponed Dialog, dlg_postponed()
WT_DLG_QUERY	Query Dialog, dlg_query()
WT_DLG_SMIME	Smime Dialog, dlg_smime()
WT_CUSTOM	Window with a custom drawing function.
WT_HELP_BAR	Help Bar containing list of useful key bindings.
WT_INDEX	A panel containing the Index Window.
WT_MENU	An Window containing a Menu.
WT_MESSAGE	Window for messages/errors.
WT_PAGER	A panel containing the Pager Window.
WT_SIDEBAR	Side panel containing Accounts or groups of data.
WT_STATUS_BAR	Status Bar containing extra info about the Index/Pager/etc.

Definition at line 70 of file mutt_window.h.

{
  // Structural Windows
  WT_ROOT,            
  WT_CONTAINER,       
  WT_ALL_DIALOGS,     
 
  // Dialogs (nested Windows) displayed to the user
  WT_DLG_ALIAS,       
  WT_DLG_ATTACHMENT,  
  WT_DLG_AUTOCRYPT,   
  WT_DLG_BROWSER,     
  WT_DLG_CERTIFICATE, 
  WT_DLG_COMPOSE,     
  WT_DLG_GPGME,       
  WT_DLG_PAGER,       
  WT_DLG_HISTORY,     
  WT_DLG_INDEX,       
  WT_DLG_PATTERN,     
  WT_DLG_PGP,         
  WT_DLG_POSTPONED,   
  WT_DLG_QUERY,       
  WT_DLG_SMIME,       
 
  // Common Windows
  WT_CUSTOM,          
  WT_HELP_BAR,        
  WT_INDEX,           
  WT_MENU,            
  WT_MESSAGE,         
  WT_PAGER,           
  WT_SIDEBAR,         
  WT_STATUS_BAR,      
};

NotifyWindow

enum NotifyWindow

Window notification types.

Observers of NT_WINDOW will be passed an EventWindow.

Note

Delete notifications are sent before the object is deleted.

Other notifications are sent after the event.

Enumerator
NT_WINDOW_ADD	New Window has been added.
NT_WINDOW_DELETE	Window is about to be deleted.
NT_WINDOW_STATE	Window state has changed, e.g. WN_VISIBLE.
NT_WINDOW_DIALOG	A new Dialog Window has been created, e.g. WT_DLG_INDEX.
NT_WINDOW_FOCUS	Window focus has changed.

Definition at line 226 of file mutt_window.h.

{
  NT_WINDOW_ADD = 1, 
  NT_WINDOW_DELETE,  
  NT_WINDOW_STATE,   
  NT_WINDOW_DIALOG,  
  NT_WINDOW_FOCUS,   
};

Function Documentation

TAILQ_HEAD()

TAILQ_HEAD	(	MuttWindowList	,
		MuttWindow
	)

mutt_window_add_child()

void mutt_window_add_child	(	struct MuttWindow *	parent,
		struct MuttWindow *	child
	)

Add a child to Window.

Parameters

parent	Window to add to
child	Window to add

Definition at line 411 of file mutt_window.c.

{
  if (!parent || !child)
    return;
 
  TAILQ_INSERT_TAIL(&parent->children, child, entries);
  child->parent = parent;
 
  notify_set_parent(child->notify, parent->notify);
 
  mutt_debug(LL_NOTIFY, "NT_WINDOW_NEW: %s, %p\n", mutt_window_win_name(child),
             (void *) child);
  struct EventWindow ev_w = { child, WN_NO_FLAGS };
  notify_send(child->notify, NT_WINDOW, NT_WINDOW_ADD, &ev_w);
}

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mutt_window_free()

void mutt_window_free

(

struct MuttWindow **

ptr

)

Free a Window and its children.

Parameters

ptr	Window to free

Definition at line 205 of file mutt_window.c.

{
  if (!ptr || !*ptr)
    return;
 
  struct MuttWindow *win = *ptr;
 
  if (win->parent && (win->parent->focus == win))
    win->parent->focus = NULL;
 
  mutt_debug(LL_NOTIFY, "NT_WINDOW_DELETE: %s, %p\n", mutt_window_win_name(win),
             (void *) win);
  struct EventWindow ev_w = { win, WN_NO_FLAGS };
  notify_send(win->notify, NT_WINDOW, NT_WINDOW_DELETE, &ev_w);
 
  mutt_winlist_free(&win->children);
 
  if (win->wdata_free && win->wdata)
    win->wdata_free(win, &win->wdata); // Custom function to free private data
 
  notify_free(&win->notify);
 
  FREE(ptr);
}

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mutt_window_get_coords()

void mutt_window_get_coords	(	struct MuttWindow *	win,
		int *	row,
		int *	col
	)

Get the cursor position in the Window.

Parameters

[in]	win	Window
[out]	row	Row in Window
[out]	col	Column in Window

Assumes the current position is inside the window. Otherwise it will happily return negative or values outside the window boundaries

Definition at line 280 of file mutt_window.c.

{
  int x = 0;
  int y = 0;
 
  getyx(stdscr, y, x);
  if (col)
    *col = x - win->state.col_offset;
  if (row)
    *row = y - win->state.row_offset;
}

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mutt_window_new()

struct MuttWindow * mutt_window_new	(	enum WindowType	type,
		enum MuttWindowOrientation	orient,
		enum MuttWindowSize	size,
		int	cols,
		int	rows
	)

Create a new Window.

Parameters

type	Window type, e.g. WT_ROOT
orient	Window orientation, e.g. MUTT_WIN_ORIENT_VERTICAL
size	Window size, e.g. MUTT_WIN_SIZE_MAXIMISE
cols	Initial number of columns to allocate, can be MUTT_WIN_SIZE_UNLIMITED
rows	Initial number of rows to allocate, can be MUTT_WIN_SIZE_UNLIMITED

Return values

ptr	New Window

Definition at line 182 of file mutt_window.c.

{
  struct MuttWindow *win = MUTT_MEM_CALLOC(1, struct MuttWindow);
 
  win->type = type;
  win->orient = orient;
  win->size = size;
  win->req_rows = rows;
  win->req_cols = cols;
  win->state.visible = true;
  win->notify = notify_new();
  TAILQ_INIT(&win->children);
 
  win->actions |= WA_RECALC | WA_REPAINT;
 
  return win;
}

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mutt_window_reflow()

void mutt_window_reflow

(

struct MuttWindow *

win

)

Resize a Window and its children.

Parameters

win	Window to resize

Definition at line 309 of file mutt_window.c.

{
  if (OptNoCurses)
    return;
 
  if (!win)
    win = RootWindow;
 
  window_reflow(win);
  window_notify_all(win);
 
  // Allow Windows to resize themselves based on the first reflow
  window_reflow(win);
  window_notify_all(win);
 
#ifdef USE_DEBUG_WINDOW
  debug_win_dump();
#endif
}

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mutt_window_remove_child()

struct MuttWindow * mutt_window_remove_child	(	struct MuttWindow *	parent,
		struct MuttWindow *	child
	)

Remove a child from a Window.

Parameters

parent	Window to remove from
child	Window to remove

Return values

ptr	Child Window

Definition at line 433 of file mutt_window.c.

{
  if (!parent || !child)
    return NULL;
 
  // A notification will be sent when the Window is freed
  TAILQ_REMOVE(&parent->children, child, entries);
  child->parent = NULL;
 
  if (parent->focus == child)
    parent->focus = NULL;
 
  notify_set_parent(child->notify, NULL);
 
  return child;
}

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mutt_window_wrap_cols()

int mutt_window_wrap_cols	(	int	width,
		short	wrap
	)

Calculate the wrap column for a given screen width.

Parameters

width	Screen width
wrap	Wrap config

Return values

num	Column that text should be wrapped at

The wrap variable can be negative, meaning there should be a right margin.

Definition at line 337 of file mutt_window.c.

{
  if (wrap < 0)
    return (width > -wrap) ? (width + wrap) : width;
  if (wrap)
    return (wrap < width) ? wrap : width;
  return width;
}

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mutt_window_addch()

int mutt_window_addch	(	struct MuttWindow *	win,
		int	ch
	)

Write one character to a Window.

Parameters

win	Window
ch	Character to write

Return values

0	Success
-1	Error

Definition at line 353 of file mutt_window.c.

{
  return addch(ch);
}

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mutt_window_addnstr()

int mutt_window_addnstr	(	struct MuttWindow *	win,
		const char *	str,
		int	num
	)

Write a partial string to a Window.

Parameters

win	Window
str	String
num	Maximum number of characters to write

Return values

0	Success
-1	Error

Definition at line 366 of file mutt_window.c.

{
  if (!str)
    return -1;
 
  return addnstr(str, num);
}

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mutt_window_addstr()

int mutt_window_addstr	(	struct MuttWindow *	win,
		const char *	str
	)

Write a string to a Window.

Parameters

win	Window
str	String

Return values

0	Success
-1	Error

Definition at line 381 of file mutt_window.c.

{
  if (!str)
    return -1;
 
  return addstr(str);
}

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mutt_window_clearline()

void mutt_window_clearline	(	struct MuttWindow *	win,
		int	row
	)

Clear a row of a Window.

Parameters

win	Window
row	Row to clear

Definition at line 235 of file mutt_window.c.

{
  mutt_window_move(win, row, 0);
  mutt_window_clrtoeol(win);
}

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mutt_window_clear()

void mutt_window_clear

(

struct MuttWindow *

win

)

Clear a Window.

Parameters

win

Window

If the Window isn't visible, it won't be cleared.

Definition at line 685 of file mutt_window.c.

{
  if (!mutt_window_is_visible(win))
    return;
 
  for (int i = 0; i < win->state.rows; i++)
    mutt_window_clearline(win, i);
}

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mutt_window_clrtoeol()

void mutt_window_clrtoeol

(

struct MuttWindow *

win

)

Clear to the end of the line.

Parameters

win

Window

Note

Assumes the cursor has already been positioned within the window.

Definition at line 247 of file mutt_window.c.

{
  if (!win || !stdscr)
    return;
 
  if ((win->state.col_offset + win->state.cols) == COLS)
  {
    clrtoeol();
  }
  else
  {
    int row = 0;
    int col = 0;
    getyx(stdscr, row, col);
    int curcol = col;
    while (curcol < (win->state.col_offset + win->state.cols))
    {
      addch(' ');
      curcol++;
    }
    move(row, col);
  }
}

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mutt_window_move()

int mutt_window_move	(	struct MuttWindow *	win,
		int	row,
		int	col
	)

Move the cursor in a Window.

Parameters

win	Window
row	Row to move to
col	Column to move to

Return values

OK	Success
ERR	Error

Definition at line 300 of file mutt_window.c.

{
  return move(win->state.row_offset + row, win->state.col_offset + col);
}

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mutt_window_printf()

int mutt_window_printf	(	struct MuttWindow *	win,
		const char *	format,
			...
	)

mutt_window_is_visible()

int bool mutt_window_is_visible

(

struct MuttWindow *

win

)

Is the Window visible?

Parameters

win

Window

Return values

true	The Window is visible

For a Window to be visible, it must be visible and its parent and grandparent, etc.

Definition at line 477 of file mutt_window.c.

{
  if (!win)
    return false;
 
  for (; win; win = win->parent)
  {
    if (!win->state.visible)
      return false;
  }
 
  return true;
}

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mutt_winlist_free()

void mutt_winlist_free

(

struct MuttWindowList *

head

)

Free a tree of Windows.

Parameters

head	WindowList to free

Definition at line 454 of file mutt_window.c.

{
  if (!head)
    return;
 
  struct MuttWindow *np = NULL;
  struct MuttWindow *tmp = NULL;
  TAILQ_FOREACH_SAFE(np, head, entries, tmp)
  {
    TAILQ_REMOVE(head, np, entries);
    mutt_winlist_free(&np->children);
    mutt_window_free(&np);
  }
}

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window_find_child()

struct MuttWindow * window_find_child	(	struct MuttWindow *	win,
		enum WindowType	type
	)

Recursively find a child Window of a given type.

Parameters

win	Window to start searching
type	Window type to find, e.g. WT_STATUS_BAR

Return values

ptr	Matching Window
NULL	No match

Definition at line 498 of file mutt_window.c.

{
  if (!win)
    return NULL;
  if (win->type == type)
    return win;
 
  struct MuttWindow *np = NULL;
  struct MuttWindow *match = NULL;
  TAILQ_FOREACH(np, &win->children, entries)
  {
    match = window_find_child(np, type);
    if (match)
      return match;
  }
 
  return NULL;
}

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window_find_parent()

struct MuttWindow * window_find_parent	(	struct MuttWindow *	win,
		enum WindowType	type
	)

Find a (grand-)parent of a Window by type.

Parameters

win	Window
type	Window type, e.g. WT_DLG_INDEX

Return values

ptr

Window

Definition at line 523 of file mutt_window.c.

{
  for (; win; win = win->parent)
  {
    if (win->type == type)
      return win;
  }
 
  return NULL;
}

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window_notify_all()

void window_notify_all

(

struct MuttWindow *

win

)

Notify observers of changes to a Window and its children.

Parameters

win

Window

Definition at line 145 of file mutt_window.c.

{
  if (!win)
    win = RootWindow;
 
  window_notify(win);
 
  struct MuttWindow *np = NULL;
  TAILQ_FOREACH(np, &win->children, entries)
  {
    window_notify_all(np);
  }
  win->old = win->state;
}

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window_set_visible()

void window_set_visible	(	struct MuttWindow *	win,
		bool	visible
	)

Set a Window visible or hidden.

Parameters

win	Window
visible	If true, make Window visible, otherwise hidden

Definition at line 165 of file mutt_window.c.

{
  if (!win)
    win = RootWindow;
 
  win->state.visible = visible;
}

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window_set_focus()

struct MuttWindow * window_set_focus

(

struct MuttWindow *

win

)

Set the Window focus.

Parameters

win	Window to focus

Return values

ptr	Old focused Window
NULL	Error, or focus not changed

Definition at line 649 of file mutt_window.c.

{
  if (!win)
    return NULL;
 
  struct MuttWindow *old_focus = window_get_focus();
 
  struct MuttWindow *parent = win->parent;
  struct MuttWindow *child = win;
 
  // Set the chain of focus, all the way to the root
  for (; parent; child = parent, parent = parent->parent)
    parent->focus = child;
 
  win->focus = NULL;
 
  if (win == old_focus)
    return NULL;
 
  mutt_debug(LL_NOTIFY, "NT_WINDOW_FOCUS: %s, %p\n", mutt_window_win_name(win),
             (void *) win);
  struct EventWindow ev_w = { win, WN_NO_FLAGS };
  notify_send(win->notify, NT_WINDOW, NT_WINDOW_FOCUS, &ev_w);
#ifdef USE_DEBUG_WINDOW
  debug_win_dump();
#endif
 
  return old_focus;
}

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window_get_focus()

struct MuttWindow * window_get_focus

(

void

)

Get the currently focused Window.

Return values

ptr	Window with focus

Definition at line 633 of file mutt_window.c.

{
  struct MuttWindow *win = RootWindow;
 
  while (win && win->focus)
    win = win->focus;
 
  return win;
}

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window_is_focused()

bool window_is_focused

(

const struct MuttWindow *

win

)

Does the given Window have the focus?

Parameters

win	Window to check

Return values

true	Window has focus

Definition at line 619 of file mutt_window.c.

{
  if (!win)
    return false;
 
  struct MuttWindow *win_focus = window_get_focus();
 
  return (win_focus == win);
}

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window_redraw()

void window_redraw

(

struct MuttWindow *

win

)

Reflow, recalc and repaint a tree of Windows.

Parameters

win	Window to start at

Note

If win is NULL, all windows will be redrawn

Definition at line 599 of file mutt_window.c.

{
  if (!win)
    win = RootWindow;
 
  window_reflow(win);
  window_notify_all(win);
 
  window_recalc(win);
  window_repaint(win);
  window_recursor();
 
  mutt_refresh();
}

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window_invalidate_all()

void window_invalidate_all

(

void

)

Mark all windows as in need of repaint.

Definition at line 732 of file mutt_window.c.

{
  window_invalidate(RootWindow);
  clearok(stdscr, true);
  keypad(stdscr, true);
}

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mutt_window_win_name()

const char * mutt_window_win_name

(

const struct MuttWindow *

win

)

Get the name of a Window.

Parameters

win

Window

Return values

ptr	String describing Window
NULL	Error, or unknown

Definition at line 700 of file mutt_window.c.

{
  if (!win)
    return "UNKNOWN";
 
  const char *name = mutt_map_get_name(win->type, WindowNames);
  if (name)
    return name;
  return "UNKNOWN";
}

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window_status_on_top()

bool window_status_on_top	(	struct MuttWindow *	panel,
		struct ConfigSubset *	sub
	)

Organise windows according to config variable.

Parameters

panel	Window containing WT_MENU and WT_STATUS_BAR
sub	Config Subset

Return values

true	Window order was changed

Set the positions of two Windows based on a config variable $status_on_top.

Note

The children are expected to have types: WT_MENU, WT_STATUS_BAR

Definition at line 749 of file mutt_window.c.

{
  const bool c_status_on_top = cs_subset_bool(sub, "status_on_top");
 
  struct MuttWindow *win = TAILQ_FIRST(&panel->children);
 
  if ((c_status_on_top && (win->type == WT_STATUS_BAR)) ||
      (!c_status_on_top && (win->type != WT_STATUS_BAR)))
  {
    return false;
  }
 
  if (c_status_on_top)
  {
    win = TAILQ_LAST(&panel->children, MuttWindowList);
    TAILQ_REMOVE(&panel->children, win, entries);
    TAILQ_INSERT_HEAD(&panel->children, win, entries);
  }
  else
  {
    TAILQ_REMOVE(&panel->children, win, entries);
    TAILQ_INSERT_TAIL(&panel->children, win, entries);
  }
 
  mutt_window_reflow(panel);
  window_invalidate_all();
  return true;
}

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mutt_window_swap()

bool mutt_window_swap	(	struct MuttWindow *	parent,
		struct MuttWindow *	win1,
		struct MuttWindow *	win2
	)

Swap the position of two windows.

Parameters

parent	Parent Window
win1	Window
win2	Window

Return values

true	Windows were switched

Definition at line 785 of file mutt_window.c.

{
  if (!parent || !win1 || !win2)
    return false;
 
  // ensure both windows are children of the parent
  if (win1->parent != parent || win2->parent != parent)
    return false;
 
  struct MuttWindow *win1_next = TAILQ_NEXT(win1, entries);
  if (win1_next == win2)
  {
    // win1 is directly in front of win2, move it behind
    TAILQ_REMOVE(&parent->children, win1, entries);
    TAILQ_INSERT_AFTER(&parent->children, win2, win1, entries);
    return true;
  }
 
  struct MuttWindow *win2_next = TAILQ_NEXT(win2, entries);
  if (win2_next == win1)
  {
    // win2 is directly in front of win1, move it behind
    TAILQ_REMOVE(&parent->children, win2, entries);
    TAILQ_INSERT_AFTER(&parent->children, win1, win2, entries);
    return true;
  }
 
  TAILQ_REMOVE(&parent->children, win1, entries);
  TAILQ_REMOVE(&parent->children, win2, entries);
 
  if (win1_next)
    TAILQ_INSERT_BEFORE(win1_next, win2, entries);
  else
    TAILQ_INSERT_TAIL(&parent->children, win2, entries);
 
  if (win2_next)
    TAILQ_INSERT_BEFORE(win2_next, win1, entries);
  else
    TAILQ_INSERT_TAIL(&parent->children, win1, entries);
 
  return true;
}

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