constraints.c File Reference

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Data Structures

struct  ConstraintInfo
struct  Constraint

Typedefs

typedef gboolean(* ConstraintFunc )(MetaWindow *window, ConstraintInfo *info, ConstraintPriority priority, gboolean check_only)

Enumerations

enum  ConstraintPriority {
  PRIORITY_MINIMUM = 0, PRIORITY_ASPECT_RATIO = 0, PRIORITY_ENTIRELY_VISIBLE_ON_SINGLE_XINERAMA = 0, PRIORITY_ENTIRELY_VISIBLE_ON_WORKAREA = 1,
  PRIORITY_SIZE_HINTS_INCREMENTS = 1, PRIORITY_MAXIMIZATION = 2, PRIORITY_FULLSCREEN = 2, PRIORITY_SIZE_HINTS_LIMITS = 3,
  PRIORITY_TITLEBAR_VISIBLE = 4, PRIORITY_PARTIALLY_VISIBLE_ON_WORKAREA = 4, PRIORITY_MAXIMUM = 4
}
enum  ActionType { ACTION_MOVE, ACTION_RESIZE, ACTION_MOVE_AND_RESIZE }

Functions

static gboolean constrain_maximization (MetaWindow *window, ConstraintInfo *info, ConstraintPriority priority, gboolean check_only)
static gboolean constrain_fullscreen (MetaWindow *window, ConstraintInfo *info, ConstraintPriority priority, gboolean check_only)
static gboolean constrain_size_increments (MetaWindow *window, ConstraintInfo *info, ConstraintPriority priority, gboolean check_only)
static gboolean constrain_size_limits (MetaWindow *window, ConstraintInfo *info, ConstraintPriority priority, gboolean check_only)
static gboolean constrain_aspect_ratio (MetaWindow *window, ConstraintInfo *info, ConstraintPriority priority, gboolean check_only)
static gboolean constrain_to_single_xinerama (MetaWindow *window, ConstraintInfo *info, ConstraintPriority priority, gboolean check_only)
static gboolean constrain_fully_onscreen (MetaWindow *window, ConstraintInfo *info, ConstraintPriority priority, gboolean check_only)
static gboolean constrain_titlebar_visible (MetaWindow *window, ConstraintInfo *info, ConstraintPriority priority, gboolean check_only)
static gboolean constrain_partially_onscreen (MetaWindow *window, ConstraintInfo *info, ConstraintPriority priority, gboolean check_only)
static void setup_constraint_info (ConstraintInfo *info, MetaWindow *window, MetaFrameGeometry *orig_fgeom, MetaMoveResizeFlags flags, int resize_gravity, const MetaRectangle *orig, MetaRectangle *new)
static void place_window_if_needed (MetaWindow *window, ConstraintInfo *info)
static void update_onscreen_requirements (MetaWindow *window, ConstraintInfo *info)
static void extend_by_frame (MetaRectangle *rect, const MetaFrameGeometry *fgeom)
static void unextend_by_frame (MetaRectangle *rect, const MetaFrameGeometry *fgeom)
static void get_size_limits (const MetaWindow *window, const MetaFrameGeometry *fgeom, gboolean include_frame, MetaRectangle *min_size, MetaRectangle *max_size)
static gboolean do_all_constraints (MetaWindow *window, ConstraintInfo *info, ConstraintPriority priority, gboolean check_only)
void meta_window_constrain (MetaWindow *window, MetaFrameGeometry *orig_fgeom, MetaMoveResizeFlags flags, int resize_gravity, const MetaRectangle *orig, MetaRectangle *new)
static gboolean do_screen_and_xinerama_relative_constraints (MetaWindow *window, GList *region_spanning_rectangles, ConstraintInfo *info, gboolean check_only)

Variables

static const Constraint all_constraints []

Typedef Documentation

typedef gboolean(* ConstraintFunc)(MetaWindow *window, ConstraintInfo *info, ConstraintPriority priority, gboolean check_only)

Definition at line 201 of file constraints.c.

Enumeration Type Documentation

enum ActionType

Enumerator:
ACTION_MOVE 
ACTION_RESIZE 
ACTION_MOVE_AND_RESIZE 

Definition at line 107 of file constraints.c.

enum ConstraintPriority

Enumerator:
PRIORITY_MINIMUM 
PRIORITY_ASPECT_RATIO 
PRIORITY_ENTIRELY_VISIBLE_ON_SINGLE_XINERAMA 
PRIORITY_ENTIRELY_VISIBLE_ON_WORKAREA 
PRIORITY_SIZE_HINTS_INCREMENTS 
PRIORITY_MAXIMIZATION 
PRIORITY_FULLSCREEN 
PRIORITY_SIZE_HINTS_LIMITS 
PRIORITY_TITLEBAR_VISIBLE 
PRIORITY_PARTIALLY_VISIBLE_ON_WORKAREA 
PRIORITY_MAXIMUM 

Definition at line 92 of file constraints.c.

Function Documentation

static gboolean constrain_aspect_ratio ( MetaWindow *  window,
ConstraintInfo *  info,
ConstraintPriority  priority,
gboolean  check_only 
) [static]

Definition at line 929 of file constraints.c.

References ACTION_MOVE, ACTION_MOVE_AND_RESIZE, ConstraintInfo::action_type, ConstraintInfo::current, _MetaWindow::fullscreen, _MetaRectangle::height, meta_rectangle_find_linepoint_closest_to_point(), meta_rectangle_resize_with_gravity(), META_WINDOW_MAXIMIZED, ConstraintInfo::orig, PRIORITY_ASPECT_RATIO, ConstraintInfo::resize_gravity, _MetaWindow::size_hints, TRUE, and _MetaRectangle::width.

static gboolean constrain_fullscreen ( MetaWindow *  window,
ConstraintInfo *  info,
ConstraintPriority  priority,
gboolean  check_only 
) [static]

Definition at line 773 of file constraints.c.

References ConstraintInfo::current, ConstraintInfo::entire_xinerama, FALSE, ConstraintInfo::fgeom, _MetaWindow::fullscreen, get_size_limits(), meta_rectangle_could_fit_rect(), meta_rectangle_equal(), PRIORITY_FULLSCREEN, and TRUE.

static gboolean constrain_fully_onscreen ( MetaWindow *  window,
ConstraintInfo *  info,
ConstraintPriority  priority,
gboolean  check_only 
) [static]

Definition at line 1166 of file constraints.c.

References do_screen_and_xinerama_relative_constraints(), _MetaWindow::fullscreen, ConstraintInfo::is_user_action, META_WINDOW_DESKTOP, META_WINDOW_DOCK, PRIORITY_ENTIRELY_VISIBLE_ON_WORKAREA, _MetaWindow::require_fully_onscreen, TRUE, _MetaWindow::type, and ConstraintInfo::usable_screen_region.

static gboolean constrain_maximization ( MetaWindow *  window,
ConstraintInfo *  info,
ConstraintPriority  priority,
gboolean  check_only 
) [static]

Definition at line 689 of file constraints.c.

References _MetaScreen::active_workspace, _MetaWorkspace::all_struts, ConstraintInfo::current, ConstraintInfo::entire_xinerama, extend_by_frame(), FALSE, ConstraintInfo::fgeom, get_size_limits(), _MetaRectangle::height, _MetaWindow::maximized_horizontally, _MetaWindow::maximized_vertically, META_DIRECTION_HORIZONTAL, META_DIRECTION_VERTICAL, meta_rectangle_expand_to_avoiding_struts(), PRIORITY_MAXIMIZATION, _MetaWindow::screen, TRUE, unextend_by_frame(), _MetaRectangle::width, ConstraintInfo::work_area_xinerama, _MetaRectangle::x, and _MetaRectangle::y.

static gboolean constrain_partially_onscreen ( MetaWindow *  window,
ConstraintInfo *  info,
ConstraintPriority  priority,
gboolean  check_only 
) [static]

Definition at line 1278 of file constraints.c.

References _MetaFrameGeometry::bottom_height, ConstraintInfo::current, do_screen_and_xinerama_relative_constraints(), ConstraintInfo::fgeom, _MetaWindow::frame, _MetaRectangle::height, meta_rectangle_expand_region_conditionally(), META_WINDOW_DESKTOP, META_WINDOW_DOCK, PRIORITY_PARTIALLY_VISIBLE_ON_WORKAREA, _MetaFrameGeometry::top_height, TRUE, _MetaWindow::type, ConstraintInfo::usable_screen_region, and _MetaRectangle::width.

static gboolean constrain_size_increments ( MetaWindow *  window,
ConstraintInfo *  info,
ConstraintPriority  priority,
gboolean  check_only 
) [static]

Definition at line 806 of file constraints.c.

References ACTION_MOVE, ACTION_MOVE_AND_RESIZE, ConstraintInfo::action_type, ConstraintInfo::current, _MetaWindow::fullscreen, _MetaRectangle::height, _MetaWindow::maximized_horizontally, _MetaWindow::maximized_vertically, meta_rectangle_resize_with_gravity(), META_WINDOW_MAXIMIZED, ConstraintInfo::orig, PRIORITY_SIZE_HINTS_INCREMENTS, ConstraintInfo::resize_gravity, _MetaWindow::size_hints, TRUE, and _MetaRectangle::width.

static gboolean constrain_size_limits ( MetaWindow *  window,
ConstraintInfo *  info,
ConstraintPriority  priority,
gboolean  check_only 
) [static]

Definition at line 874 of file constraints.c.

References ACTION_MOVE, ACTION_MOVE_AND_RESIZE, ConstraintInfo::action_type, ConstraintInfo::current, FALSE, ConstraintInfo::fgeom, get_size_limits(), _MetaRectangle::height, _MetaWindow::maximized_horizontally, _MetaWindow::maximized_vertically, meta_rectangle_could_fit_rect(), meta_rectangle_resize_with_gravity(), ConstraintInfo::orig, PRIORITY_SIZE_HINTS_LIMITS, ConstraintInfo::resize_gravity, TRUE, and _MetaRectangle::width.

static gboolean constrain_titlebar_visible ( MetaWindow *  window,
ConstraintInfo *  info,
ConstraintPriority  priority,
gboolean  check_only 
) [static]

Definition at line 1193 of file constraints.c.

References _MetaFrameGeometry::bottom_height, ConstraintInfo::current, _MetaWindow::decorated, _MetaWindow::display, do_screen_and_xinerama_relative_constraints(), ConstraintInfo::fgeom, _MetaWindow::frame, _MetaWindow::fullscreen, _MetaDisplay::grab_frame_action, _MetaRectangle::height, ConstraintInfo::is_user_action, meta_rectangle_expand_region_conditionally(), META_WINDOW_DESKTOP, META_WINDOW_DOCK, PRIORITY_TITLEBAR_VISIBLE, _MetaWindow::require_titlebar_visible, _MetaFrameGeometry::top_height, TRUE, _MetaWindow::type, ConstraintInfo::usable_screen_region, and _MetaRectangle::width.

static gboolean constrain_to_single_xinerama ( MetaWindow *  window,
ConstraintInfo *  info,
ConstraintPriority  priority,
gboolean  check_only 
) [static]

Definition at line 1137 of file constraints.c.

References do_screen_and_xinerama_relative_constraints(), _MetaWindow::frame, ConstraintInfo::is_user_action, META_WINDOW_DESKTOP, META_WINDOW_DOCK, _MetaScreen::n_xinerama_infos, PRIORITY_ENTIRELY_VISIBLE_ON_SINGLE_XINERAMA, _MetaWindow::require_on_single_xinerama, _MetaWindow::screen, TRUE, _MetaWindow::type, and ConstraintInfo::usable_xinerama_region.

static gboolean do_all_constraints ( MetaWindow *  window,
ConstraintInfo *  info,
ConstraintPriority  priority,
gboolean  check_only 
) [static]

Definition at line 225 of file constraints.c.

References ConstraintInfo::current, FALSE, Constraint::func, _MetaRectangle::height, META_DEBUG_GEOMETRY, Constraint::name, NULL, TRUE, _MetaRectangle::width, _MetaRectangle::x, and _MetaRectangle::y.

Referenced by meta_window_constrain().

static gboolean do_screen_and_xinerama_relative_constraints ( MetaWindow *  window,
GList *  region_spanning_rectangles,
ConstraintInfo *  info,
gboolean  check_only 
) [static]

Definition at line 1063 of file constraints.c.

References ACTION_MOVE, ACTION_RESIZE, ConstraintInfo::action_type, ConstraintInfo::current, extend_by_frame(), FALSE, ConstraintInfo::fgeom, FIXED_DIRECTION_X, FIXED_DIRECTION_Y, ConstraintInfo::fixed_directions, get_size_limits(), _MetaRectangle::height, ConstraintInfo::is_user_action, META_DEBUG_GEOMETRY, meta_is_verbose(), meta_rectangle_clamp_to_fit_into_region(), meta_rectangle_clip_to_region(), meta_rectangle_contained_in_region(), meta_rectangle_could_fit_in_region(), meta_rectangle_region_to_string(), meta_rectangle_shove_into_region(), TRUE, unextend_by_frame(), and _MetaRectangle::width.

Referenced by constrain_fully_onscreen(), constrain_partially_onscreen(), constrain_titlebar_visible(), and constrain_to_single_xinerama().

static void extend_by_frame ( MetaRectangle *  rect,
const MetaFrameGeometry *  fgeom 
) [static]

Definition at line 642 of file constraints.c.

References _MetaFrameGeometry::bottom_height, _MetaRectangle::height, _MetaFrameGeometry::left_width, _MetaFrameGeometry::right_width, _MetaFrameGeometry::top_height, _MetaRectangle::width, _MetaRectangle::x, and _MetaRectangle::y.

Referenced by constrain_maximization(), do_screen_and_xinerama_relative_constraints(), and update_onscreen_requirements().

static void get_size_limits ( const MetaWindow *  window,
const MetaFrameGeometry *  fgeom,
gboolean  include_frame,
MetaRectangle *  min_size,
MetaRectangle *  max_size 
) [inline, static]

Definition at line 662 of file constraints.c.

References _MetaFrameGeometry::bottom_height, _MetaRectangle::height, _MetaFrameGeometry::left_width, _MetaFrameGeometry::right_width, _MetaWindow::size_hints, _MetaFrameGeometry::top_height, and _MetaRectangle::width.

Referenced by constrain_fullscreen(), constrain_maximization(), constrain_size_limits(), and do_screen_and_xinerama_relative_constraints().

void meta_window_constrain ( MetaWindow *  window,
MetaFrameGeometry *  orig_fgeom,
MetaMoveResizeFlags  flags,
int  resize_gravity,
const MetaRectangle *  orig,
MetaRectangle *  new 
)

Definition at line 264 of file constraints.c.

References ConstraintInfo::current, _MetaWindow::desc, do_all_constraints(), FALSE, ConstraintInfo::fgeom, _MetaRectangle::height, META_DEBUG_GEOMETRY, place_window_if_needed(), PRIORITY_MAXIMUM, PRIORITY_MINIMUM, setup_constraint_info(), TRUE, update_onscreen_requirements(), _MetaRectangle::width, _MetaRectangle::x, and _MetaRectangle::y.

Referenced by meta_window_move_resize_internal().

static void place_window_if_needed ( MetaWindow *  window,
ConstraintInfo *  info 
) [static]

Definition at line 456 of file constraints.c.

References _MetaScreen::active_workspace, _MetaWindow::calc_placement, ConstraintInfo::current, ConstraintInfo::entire_xinerama, FALSE, ConstraintInfo::fgeom, FIXED_DIRECTION_NONE, ConstraintInfo::fixed_directions, _MetaWindow::frame, _MetaWindow::fullscreen, _MetaRectangle::height, _MetaWindow::maximize_horizontally_after_placement, _MetaWindow::maximize_vertically_after_placement, _MetaWindow::maximized_horizontally, _MetaWindow::maximized_vertically, meta_frame_calc_geometry(), META_MAXIMIZE_HORIZONTAL, META_MAXIMIZE_VERTICAL, meta_screen_get_xinerama_for_rect(), meta_window_get_work_area_for_xinerama(), meta_window_maximize_internal(), meta_window_minimize(), meta_window_place(), meta_workspace_get_onxinerama_region(), _MetaWindow::minimize_after_placement, _MetaWindow::minimized, _MetaXineramaScreenInfo::number, ConstraintInfo::orig, _MetaWindow::placed, _MetaXineramaScreenInfo::rect, _MetaWindow::screen, TRUE, ConstraintInfo::usable_xinerama_region, _MetaRectangle::width, ConstraintInfo::work_area_xinerama, _MetaRectangle::x, and _MetaRectangle::y.

Referenced by meta_window_constrain().

static void setup_constraint_info ( ConstraintInfo *  info,
MetaWindow *  window,
MetaFrameGeometry *  orig_fgeom,
MetaMoveResizeFlags  flags,
int  resize_gravity,
const MetaRectangle *  orig,
MetaRectangle *  new 
) [static]

Definition at line 328 of file constraints.c.

References ACTION_MOVE, ACTION_MOVE_AND_RESIZE, ACTION_RESIZE, ConstraintInfo::action_type, _MetaScreen::active_workspace, _MetaFrameGeometry::bottom_height, ConstraintInfo::current, _MetaWindow::desc, ConstraintInfo::entire_xinerama, ConstraintInfo::fgeom, FIXED_DIRECTION_NONE, FIXED_DIRECTION_X, FIXED_DIRECTION_Y, ConstraintInfo::fixed_directions, _MetaWindow::fullscreen, _MetaWindow::has_fullscreen_func, _MetaRectangle::height, ConstraintInfo::is_user_action, _MetaFrameGeometry::left_width, META_DEBUG_GEOMETRY, meta_gravity_to_string(), META_IS_MOVE_ACTION, META_IS_RESIZE_ACTION, META_IS_USER_ACTION, meta_rectangle_equal(), meta_screen_get_xinerama_for_rect(), meta_warning(), meta_window_get_work_area_for_xinerama(), meta_window_make_fullscreen_internal(), meta_workspace_get_onscreen_region(), meta_workspace_get_onxinerama_region(), _MetaXineramaScreenInfo::number, ConstraintInfo::orig, _MetaXineramaScreenInfo::rect, ConstraintInfo::resize_gravity, _MetaFrameGeometry::right_width, _MetaWindow::screen, _MetaFrameGeometry::top_height, ConstraintInfo::usable_screen_region, ConstraintInfo::usable_xinerama_region, _MetaRectangle::width, ConstraintInfo::work_area_xinerama, _MetaRectangle::x, and _MetaRectangle::y.

Referenced by meta_window_constrain().

static void unextend_by_frame ( MetaRectangle *  rect,
const MetaFrameGeometry *  fgeom 
) [static]

Definition at line 652 of file constraints.c.

References _MetaFrameGeometry::bottom_height, _MetaRectangle::height, _MetaFrameGeometry::left_width, _MetaFrameGeometry::right_width, _MetaFrameGeometry::top_height, _MetaRectangle::width, _MetaRectangle::x, and _MetaRectangle::y.

Referenced by constrain_maximization(), do_screen_and_xinerama_relative_constraints(), and update_onscreen_requirements().

static void update_onscreen_requirements ( MetaWindow *  window,
ConstraintInfo *  info 
) [static]

Definition at line 551 of file constraints.c.

References ConstraintInfo::current, _MetaWindow::decorated, _MetaWindow::desc, extend_by_frame(), ConstraintInfo::fgeom, _MetaWindow::frame, _MetaWindow::fullscreen, _MetaRectangle::height, META_DEBUG_GEOMETRY, meta_rectangle_contained_in_region(), meta_rectangle_overlaps_with_region(), META_WINDOW_DESKTOP, META_WINDOW_DOCK, _MetaWindow::require_fully_onscreen, _MetaWindow::require_on_single_xinerama, _MetaWindow::require_titlebar_visible, _MetaFrameGeometry::top_height, _MetaWindow::type, unextend_by_frame(), ConstraintInfo::usable_screen_region, and ConstraintInfo::usable_xinerama_region.

Referenced by meta_window_constrain().

Variable Documentation

const Constraint all_constraints[] [static]

Initial value:

 {
  {constrain_maximization,       "constrain_maximization"},
  {constrain_fullscreen,         "constrain_fullscreen"},
  {constrain_size_increments,    "constrain_size_increments"},
  {constrain_size_limits,        "constrain_size_limits"},
  {constrain_aspect_ratio,       "constrain_aspect_ratio"},
  {constrain_to_single_xinerama, "constrain_to_single_xinerama"},
  {constrain_fully_onscreen,     "constrain_fully_onscreen"},
  {constrain_titlebar_visible,   "constrain_titlebar_visible"},
  {constrain_partially_onscreen, "constrain_partially_onscreen"},
  {NULL,                         NULL}
}

Definition at line 211 of file constraints.c.

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