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1394 lines
54 KiB
C
1394 lines
54 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/* Mutter size/position constraints */
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/*
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* Copyright (C) 2002, 2003 Red Hat, Inc.
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* Copyright (C) 2003, 2004 Rob Adams
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* Copyright (C) 2005, 2006 Elijah Newren
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#include <config.h>
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#include "constraints.h"
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#include "workspace-private.h"
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#include "place.h"
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#include "prefs.h"
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#include <stdlib.h>
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#include <math.h>
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#if 0
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// This is the short and sweet version of how to hack on this file; see
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// doc/how-constraints-works.txt for the gory details. The basics of
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// understanding this file can be shown by the steps needed to add a new
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// constraint, which are:
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// 1) Add a new entry in the ConstraintPriority enum; higher values
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// have higher priority
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// 2) Write a new function following the format of the example below,
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// "constrain_whatever".
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// 3) Add your function to the all_constraints and all_constraint_names
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// arrays (the latter of which is for debugging purposes)
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//
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// An example constraint function, constrain_whatever:
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//
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// /* constrain_whatever does the following:
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// * Quits (returning true) if priority is higher than PRIORITY_WHATEVER
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// * If check_only is TRUE
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// * Returns whether the constraint is satisfied or not
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// * otherwise
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// * Enforces the constraint
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// * Note that the value of PRIORITY_WHATEVER is centralized with the
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// * priorities of other constraints in the definition of ConstrainPriority
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// * for easier maintenance and shuffling of priorities.
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// */
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// static gboolean
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// constrain_whatever (MetaWindow *window,
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// ConstraintInfo *info,
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// ConstraintPriority priority,
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// gboolean check_only)
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// {
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// if (priority > PRIORITY_WHATEVER)
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// return TRUE;
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//
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// /* Determine whether constraint applies; note that if the constraint
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// * cannot possibly be satisfied, constraint_applies should be set to
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// * false. If we don't do this, all constraints with a lesser priority
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// * will be dropped along with this one, and we'd rather apply as many as
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// * possible.
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// */
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// if (!constraint_applies)
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// return TRUE;
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//
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// /* Determine whether constraint is already satisfied; if we're only
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// * checking the status of whether the constraint is satisfied, we end
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// * here.
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// */
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// if (check_only || constraint_already_satisfied)
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// return constraint_already_satisfied;
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//
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// /* Enforce constraints */
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// return TRUE; /* Note that we exited early if check_only is FALSE; also,
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// * we know we can return TRUE here because we exited early
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// * if the constraint could not be satisfied; not that the
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// * return value is heeded in this case...
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// */
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// }
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#endif
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typedef enum
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{
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PRIORITY_MINIMUM = 0, /* Dummy value used for loop start = min(all priorities) */
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PRIORITY_ASPECT_RATIO = 0,
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PRIORITY_ENTIRELY_VISIBLE_ON_SINGLE_MONITOR = 0,
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PRIORITY_ENTIRELY_VISIBLE_ON_WORKAREA = 1,
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PRIORITY_SIZE_HINTS_INCREMENTS = 1,
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PRIORITY_MAXIMIZATION = 2,
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PRIORITY_FULLSCREEN = 2,
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PRIORITY_SIZE_HINTS_LIMITS = 3,
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PRIORITY_TITLEBAR_VISIBLE = 4,
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PRIORITY_PARTIALLY_VISIBLE_ON_WORKAREA = 4,
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PRIORITY_MAXIMUM = 4 /* Dummy value used for loop end = max(all priorities) */
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} ConstraintPriority;
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typedef enum
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{
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ACTION_MOVE,
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ACTION_RESIZE,
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ACTION_MOVE_AND_RESIZE
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} ActionType;
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typedef struct
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{
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MetaRectangle orig;
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MetaRectangle current;
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MetaFrameGeometry *fgeom;
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ActionType action_type;
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gboolean is_user_action;
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/* I know that these two things probably look similar at first, but they
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* have much different uses. See doc/how-constraints-works.txt for for
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* explanation of the differences and similarity between resize_gravity
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* and fixed_directions
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*/
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int resize_gravity;
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FixedDirections fixed_directions;
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/* work_area_monitor - current monitor region minus struts
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* entire_monitor - current monitor, including strut regions
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*/
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MetaRectangle work_area_monitor;
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MetaRectangle entire_monitor;
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/* Spanning rectangles for the non-covered (by struts) region of the
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* screen and also for just the current monitor
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*/
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GList *usable_screen_region;
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GList *usable_monitor_region;
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} ConstraintInfo;
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static gboolean constrain_maximization (MetaWindow *window,
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ConstraintInfo *info,
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ConstraintPriority priority,
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gboolean check_only);
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static gboolean constrain_fullscreen (MetaWindow *window,
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ConstraintInfo *info,
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ConstraintPriority priority,
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gboolean check_only);
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static gboolean constrain_size_increments (MetaWindow *window,
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ConstraintInfo *info,
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ConstraintPriority priority,
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gboolean check_only);
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static gboolean constrain_size_limits (MetaWindow *window,
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ConstraintInfo *info,
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ConstraintPriority priority,
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gboolean check_only);
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static gboolean constrain_aspect_ratio (MetaWindow *window,
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ConstraintInfo *info,
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ConstraintPriority priority,
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gboolean check_only);
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static gboolean constrain_to_single_monitor (MetaWindow *window,
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ConstraintInfo *info,
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ConstraintPriority priority,
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gboolean check_only);
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static gboolean constrain_fully_onscreen (MetaWindow *window,
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ConstraintInfo *info,
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ConstraintPriority priority,
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gboolean check_only);
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static gboolean constrain_titlebar_visible (MetaWindow *window,
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ConstraintInfo *info,
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ConstraintPriority priority,
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gboolean check_only);
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static gboolean constrain_partially_onscreen (MetaWindow *window,
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ConstraintInfo *info,
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ConstraintPriority priority,
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gboolean check_only);
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static void setup_constraint_info (ConstraintInfo *info,
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MetaWindow *window,
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MetaFrameGeometry *orig_fgeom,
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MetaMoveResizeFlags flags,
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int resize_gravity,
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const MetaRectangle *orig,
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MetaRectangle *new);
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static void place_window_if_needed (MetaWindow *window,
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ConstraintInfo *info);
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static void update_onscreen_requirements (MetaWindow *window,
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ConstraintInfo *info);
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static void extend_by_frame (MetaRectangle *rect,
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const MetaFrameGeometry *fgeom);
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static void unextend_by_frame (MetaRectangle *rect,
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const MetaFrameGeometry *fgeom);
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static inline void get_size_limits (const MetaWindow *window,
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const MetaFrameGeometry *fgeom,
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gboolean include_frame,
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MetaRectangle *min_size,
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MetaRectangle *max_size);
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typedef gboolean (* ConstraintFunc) (MetaWindow *window,
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ConstraintInfo *info,
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ConstraintPriority priority,
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gboolean check_only);
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typedef struct {
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ConstraintFunc func;
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const char* name;
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} Constraint;
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static const Constraint all_constraints[] = {
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{constrain_maximization, "constrain_maximization"},
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{constrain_fullscreen, "constrain_fullscreen"},
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{constrain_size_increments, "constrain_size_increments"},
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{constrain_size_limits, "constrain_size_limits"},
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{constrain_aspect_ratio, "constrain_aspect_ratio"},
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{constrain_to_single_monitor, "constrain_to_single_monitor"},
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{constrain_fully_onscreen, "constrain_fully_onscreen"},
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{constrain_titlebar_visible, "constrain_titlebar_visible"},
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{constrain_partially_onscreen, "constrain_partially_onscreen"},
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{NULL, NULL}
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};
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static gboolean
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do_all_constraints (MetaWindow *window,
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ConstraintInfo *info,
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ConstraintPriority priority,
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gboolean check_only)
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{
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const Constraint *constraint;
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gboolean satisfied;
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constraint = &all_constraints[0];
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satisfied = TRUE;
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while (constraint->func != NULL)
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{
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satisfied = satisfied &&
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(*constraint->func) (window, info, priority, check_only);
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if (!check_only)
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{
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/* Log how the constraint modified the position */
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meta_topic (META_DEBUG_GEOMETRY,
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"info->current is %d,%d +%d,%d after %s\n",
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info->current.x, info->current.y,
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info->current.width, info->current.height,
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constraint->name);
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}
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else if (!satisfied)
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{
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/* Log which constraint was not satisfied */
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meta_topic (META_DEBUG_GEOMETRY,
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"constraint %s not satisfied.\n",
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constraint->name);
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return FALSE;
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}
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++constraint;
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}
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return TRUE;
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}
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void
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meta_window_constrain (MetaWindow *window,
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MetaFrameGeometry *orig_fgeom,
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MetaMoveResizeFlags flags,
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int resize_gravity,
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const MetaRectangle *orig,
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MetaRectangle *new)
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{
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ConstraintInfo info;
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ConstraintPriority priority = PRIORITY_MINIMUM;
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gboolean satisfied = FALSE;
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/* WARNING: orig and new specify positions and sizes of the inner window,
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* not the outer. This is a common gotcha since half the constraints
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* deal with inner window position/size and half deal with outer. See
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* doc/how-constraints-works.txt for more information.
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*/
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meta_topic (META_DEBUG_GEOMETRY,
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"Constraining %s in move from %d,%d %dx%d to %d,%d %dx%d\n",
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window->desc,
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orig->x, orig->y, orig->width, orig->height,
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new->x, new->y, new->width, new->height);
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setup_constraint_info (&info,
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window,
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orig_fgeom,
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flags,
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resize_gravity,
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orig,
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new);
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place_window_if_needed (window, &info);
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while (!satisfied && priority <= PRIORITY_MAXIMUM) {
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gboolean check_only = TRUE;
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/* Individually enforce all the high-enough priority constraints */
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do_all_constraints (window, &info, priority, !check_only);
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/* Check if all high-enough priority constraints are simultaneously
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* satisfied
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*/
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satisfied = do_all_constraints (window, &info, priority, check_only);
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/* Drop the least important constraints if we can't satisfy them all */
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priority++;
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}
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/* Make sure we use the constrained position */
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*new = info.current;
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/* We may need to update window->require_fully_onscreen,
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* window->require_on_single_monitor, and perhaps other quantities
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* if this was a user move or user move-and-resize operation.
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*/
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update_onscreen_requirements (window, &info);
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/* Ew, what an ugly way to do things. Destructors (in a real OOP language,
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* not gobject-style--gobject would be more pain than it's worth) or
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* smart pointers would be so much nicer here. *shrug*
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*/
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if (!orig_fgeom)
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g_free (info.fgeom);
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}
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static void
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setup_constraint_info (ConstraintInfo *info,
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MetaWindow *window,
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MetaFrameGeometry *orig_fgeom,
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MetaMoveResizeFlags flags,
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int resize_gravity,
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const MetaRectangle *orig,
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MetaRectangle *new)
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{
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const MetaMonitorInfo *monitor_info;
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MetaWorkspace *cur_workspace;
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info->orig = *orig;
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info->current = *new;
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/* Create a fake frame geometry if none really exists */
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if (orig_fgeom && !window->fullscreen)
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info->fgeom = orig_fgeom;
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else
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info->fgeom = g_new0 (MetaFrameGeometry, 1);
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if (flags & META_IS_MOVE_ACTION && flags & META_IS_RESIZE_ACTION)
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info->action_type = ACTION_MOVE_AND_RESIZE;
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else if (flags & META_IS_RESIZE_ACTION)
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info->action_type = ACTION_RESIZE;
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else if (flags & META_IS_MOVE_ACTION)
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info->action_type = ACTION_MOVE;
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else
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g_error ("BAD, BAD developer! No treat for you! (Fix your calls to "
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"meta_window_move_resize_internal()).\n");
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info->is_user_action = (flags & META_IS_USER_ACTION);
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info->resize_gravity = resize_gravity;
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/* FIXME: fixed_directions might be more sane if we (a) made it
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* depend on the grab_op type instead of current amount of movement
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* (thus implying that it only has effect when user_action is true,
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* and (b) ignored it for aspect ratio windows -- at least in those
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* cases where both directions do actually change size.
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*/
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info->fixed_directions = FIXED_DIRECTION_NONE;
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/* If x directions don't change but either y direction does */
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if ( orig->x == new->x && orig->x + orig->width == new->x + new->width &&
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(orig->y != new->y || orig->y + orig->height != new->y + new->height))
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{
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info->fixed_directions = FIXED_DIRECTION_X;
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}
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/* If y directions don't change but either x direction does */
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if ( orig->y == new->y && orig->y + orig->height == new->y + new->height &&
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(orig->x != new->x || orig->x + orig->width != new->x + new->width ))
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{
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info->fixed_directions = FIXED_DIRECTION_Y;
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}
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/* The point of fixed directions is just that "move to nearest valid
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* position" is sometimes a poorer choice than "move to nearest
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* valid position but only change this coordinate" for windows the
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* user is explicitly moving. This isn't ever true for things that
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* aren't explicit user interaction, though, so just clear it out.
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*/
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if (!info->is_user_action)
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info->fixed_directions = FIXED_DIRECTION_NONE;
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monitor_info =
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meta_screen_get_monitor_for_rect (window->screen, &info->current);
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meta_window_get_work_area_for_monitor (window,
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monitor_info->number,
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&info->work_area_monitor);
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if (!window->fullscreen || window->fullscreen_monitors[0] == -1)
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{
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info->entire_monitor = monitor_info->rect;
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}
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else
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{
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int i = 0;
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long monitor;
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monitor = window->fullscreen_monitors[i];
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info->entire_monitor =
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window->screen->monitor_infos[monitor].rect;
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for (i = 1; i <= 3; i++)
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{
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monitor = window->fullscreen_monitors[i];
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meta_rectangle_union (&info->entire_monitor,
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&window->screen->monitor_infos[monitor].rect,
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&info->entire_monitor);
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}
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}
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cur_workspace = window->screen->active_workspace;
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info->usable_screen_region =
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meta_workspace_get_onscreen_region (cur_workspace);
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info->usable_monitor_region =
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meta_workspace_get_onmonitor_region (cur_workspace,
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monitor_info->number);
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/* Workaround braindead legacy apps that don't know how to
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* fullscreen themselves properly.
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*/
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if (meta_prefs_get_force_fullscreen() &&
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meta_rectangle_equal (new, &monitor_info->rect) &&
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window->has_fullscreen_func &&
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!window->fullscreen)
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{
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/*
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meta_topic (META_DEBUG_GEOMETRY,
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*/
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meta_warning (
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"Treating resize request of legacy application %s as a "
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"fullscreen request\n",
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window->desc);
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meta_window_make_fullscreen_internal (window);
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}
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/* Log all this information for debugging */
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meta_topic (META_DEBUG_GEOMETRY,
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"Setting up constraint info:\n"
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" orig: %d,%d +%d,%d\n"
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" new : %d,%d +%d,%d\n"
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" fgeom: %d,%d,%d,%d\n"
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" action_type : %s\n"
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" is_user_action : %s\n"
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" resize_gravity : %s\n"
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" fixed_directions: %s\n"
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" work_area_monitor: %d,%d +%d,%d\n"
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" entire_monitor : %d,%d +%d,%d\n",
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info->orig.x, info->orig.y, info->orig.width, info->orig.height,
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info->current.x, info->current.y,
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info->current.width, info->current.height,
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info->fgeom->left_width, info->fgeom->right_width,
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info->fgeom->top_height, info->fgeom->bottom_height,
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(info->action_type == ACTION_MOVE) ? "Move" :
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(info->action_type == ACTION_RESIZE) ? "Resize" :
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(info->action_type == ACTION_MOVE_AND_RESIZE) ? "Move&Resize" :
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"Freakin' Invalid Stupid",
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(info->is_user_action) ? "true" : "false",
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meta_gravity_to_string (info->resize_gravity),
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(info->fixed_directions == FIXED_DIRECTION_NONE) ? "None" :
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(info->fixed_directions == FIXED_DIRECTION_X) ? "X fixed" :
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(info->fixed_directions == FIXED_DIRECTION_Y) ? "Y fixed" :
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"Freakin' Invalid Stupid",
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info->work_area_monitor.x, info->work_area_monitor.y,
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info->work_area_monitor.width,
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info->work_area_monitor.height,
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info->entire_monitor.x, info->entire_monitor.y,
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info->entire_monitor.width, info->entire_monitor.height);
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}
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static void
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place_window_if_needed(MetaWindow *window,
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ConstraintInfo *info)
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{
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gboolean did_placement;
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|
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/* Do placement if any, so we go ahead and apply position
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* constraints in a move-only context. Don't place
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* maximized/minimized/fullscreen windows until they are
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* unmaximized, unminimized and unfullscreened.
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*/
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did_placement = FALSE;
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if (!window->placed &&
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window->calc_placement &&
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!(window->maximized_horizontally ||
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window->maximized_vertically) &&
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!window->minimized &&
|
|
!window->fullscreen)
|
|
{
|
|
MetaRectangle placed_rect = info->orig;
|
|
MetaWorkspace *cur_workspace;
|
|
const MetaMonitorInfo *monitor_info;
|
|
|
|
meta_window_place (window, info->fgeom, info->orig.x, info->orig.y,
|
|
&placed_rect.x, &placed_rect.y);
|
|
did_placement = TRUE;
|
|
|
|
/* placing the window may have changed the monitor. Find the
|
|
* new monitor and update the ConstraintInfo
|
|
*/
|
|
monitor_info =
|
|
meta_screen_get_monitor_for_rect (window->screen, &placed_rect);
|
|
info->entire_monitor = monitor_info->rect;
|
|
meta_window_get_work_area_for_monitor (window,
|
|
monitor_info->number,
|
|
&info->work_area_monitor);
|
|
cur_workspace = window->screen->active_workspace;
|
|
info->usable_monitor_region =
|
|
meta_workspace_get_onmonitor_region (cur_workspace,
|
|
monitor_info->number);
|
|
|
|
|
|
info->current.x = placed_rect.x;
|
|
info->current.y = placed_rect.y;
|
|
|
|
/* Since we just barely placed the window, there's no reason to
|
|
* consider any of the directions fixed.
|
|
*/
|
|
info->fixed_directions = FIXED_DIRECTION_NONE;
|
|
}
|
|
|
|
if (window->placed || did_placement)
|
|
{
|
|
if (window->maximize_horizontally_after_placement ||
|
|
window->maximize_vertically_after_placement ||
|
|
window->fullscreen_after_placement)
|
|
{
|
|
/* define a sane saved_rect so that the user can unmaximize or
|
|
* make unfullscreen to something reasonable.
|
|
*/
|
|
if (info->current.width >= info->work_area_monitor.width)
|
|
{
|
|
info->current.width = .75 * info->work_area_monitor.width;
|
|
info->current.x = info->work_area_monitor.x +
|
|
.125 * info->work_area_monitor.width;
|
|
}
|
|
if (info->current.height >= info->work_area_monitor.height)
|
|
{
|
|
info->current.height = .75 * info->work_area_monitor.height;
|
|
info->current.y = info->work_area_monitor.y +
|
|
.083 * info->work_area_monitor.height;
|
|
}
|
|
|
|
if (window->maximize_horizontally_after_placement ||
|
|
window->maximize_vertically_after_placement)
|
|
meta_window_maximize_internal (window,
|
|
(window->maximize_horizontally_after_placement ?
|
|
META_MAXIMIZE_HORIZONTAL : 0 ) |
|
|
(window->maximize_vertically_after_placement ?
|
|
META_MAXIMIZE_VERTICAL : 0), &info->current);
|
|
|
|
/* maximization may have changed frame geometry */
|
|
if (window->frame && !window->fullscreen)
|
|
meta_frame_calc_geometry (window->frame, info->fgeom);
|
|
|
|
if (window->fullscreen_after_placement)
|
|
{
|
|
window->saved_rect = info->current;
|
|
window->fullscreen = TRUE;
|
|
window->fullscreen_after_placement = FALSE;
|
|
|
|
g_object_notify (G_OBJECT (window), "fullscreen");
|
|
}
|
|
|
|
window->maximize_horizontally_after_placement = FALSE;
|
|
window->maximize_vertically_after_placement = FALSE;
|
|
}
|
|
if (window->minimize_after_placement)
|
|
{
|
|
meta_window_minimize (window);
|
|
window->minimize_after_placement = FALSE;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
update_onscreen_requirements (MetaWindow *window,
|
|
ConstraintInfo *info)
|
|
{
|
|
gboolean old;
|
|
|
|
/* We only apply the various onscreen requirements to normal windows */
|
|
if (window->type == META_WINDOW_DESKTOP ||
|
|
window->type == META_WINDOW_DOCK)
|
|
return;
|
|
|
|
/* We don't want to update the requirements for fullscreen windows;
|
|
* fullscreen windows are specially handled anyway, and it updating
|
|
* the requirements when windows enter fullscreen mode mess up the
|
|
* handling of the window when it leaves that mode (especially when
|
|
* the application sends a bunch of configurerequest events). See
|
|
* #353699.
|
|
*/
|
|
if (window->fullscreen)
|
|
return;
|
|
|
|
/* USABILITY NOTE: Naturally, I only want the require_fully_onscreen,
|
|
* require_on_single_monitor, and require_titlebar_visible flags to
|
|
* *become false* due to user interactions (which is allowed since
|
|
* certain constraints are ignored for user interactions regardless of
|
|
* the setting of these flags). However, whether to make these flags
|
|
* *become true* due to just an application interaction is a little
|
|
* trickier. It's possible that users may find not doing that strange
|
|
* since two application interactions that resize in opposite ways don't
|
|
* necessarily end up cancelling--but it may also be strange for the user
|
|
* to have an application resize the window so that it's onscreen, the
|
|
* user forgets about it, and then later the app is able to resize itself
|
|
* off the screen. Anyway, for now, I think the latter is the more
|
|
* problematic case but this may need to be revisited.
|
|
*/
|
|
|
|
/* The require onscreen/on-single-monitor and titlebar_visible
|
|
* stuff is relative to the outer window, not the inner
|
|
*/
|
|
extend_by_frame (&info->current, info->fgeom);
|
|
|
|
/* Update whether we want future constraint runs to require the
|
|
* window to be on fully onscreen.
|
|
*/
|
|
old = window->require_fully_onscreen;
|
|
window->require_fully_onscreen =
|
|
meta_rectangle_contained_in_region (info->usable_screen_region,
|
|
&info->current);
|
|
if (old ^ window->require_fully_onscreen)
|
|
meta_topic (META_DEBUG_GEOMETRY,
|
|
"require_fully_onscreen for %s toggled to %s\n",
|
|
window->desc,
|
|
window->require_fully_onscreen ? "TRUE" : "FALSE");
|
|
|
|
/* Update whether we want future constraint runs to require the
|
|
* window to be on a single monitor.
|
|
*/
|
|
old = window->require_on_single_monitor;
|
|
window->require_on_single_monitor =
|
|
meta_rectangle_contained_in_region (info->usable_monitor_region,
|
|
&info->current);
|
|
if (old ^ window->require_on_single_monitor)
|
|
meta_topic (META_DEBUG_GEOMETRY,
|
|
"require_on_single_monitor for %s toggled to %s\n",
|
|
window->desc,
|
|
window->require_on_single_monitor ? "TRUE" : "FALSE");
|
|
|
|
/* Update whether we want future constraint runs to require the
|
|
* titlebar to be visible.
|
|
*/
|
|
if (window->frame && window->decorated)
|
|
{
|
|
MetaRectangle titlebar_rect;
|
|
|
|
titlebar_rect = info->current;
|
|
titlebar_rect.height = info->fgeom->top_height;
|
|
old = window->require_titlebar_visible;
|
|
window->require_titlebar_visible =
|
|
meta_rectangle_overlaps_with_region (info->usable_screen_region,
|
|
&titlebar_rect);
|
|
if (old ^ window->require_titlebar_visible)
|
|
meta_topic (META_DEBUG_GEOMETRY,
|
|
"require_titlebar_visible for %s toggled to %s\n",
|
|
window->desc,
|
|
window->require_titlebar_visible ? "TRUE" : "FALSE");
|
|
}
|
|
|
|
/* Don't forget to restore the position of the window */
|
|
unextend_by_frame (&info->current, info->fgeom);
|
|
}
|
|
|
|
static void
|
|
extend_by_frame (MetaRectangle *rect,
|
|
const MetaFrameGeometry *fgeom)
|
|
{
|
|
rect->x -= fgeom->left_width;
|
|
rect->y -= fgeom->top_height;
|
|
rect->width += fgeom->left_width + fgeom->right_width;
|
|
rect->height += fgeom->top_height + fgeom->bottom_height;
|
|
}
|
|
|
|
static void
|
|
unextend_by_frame (MetaRectangle *rect,
|
|
const MetaFrameGeometry *fgeom)
|
|
{
|
|
rect->x += fgeom->left_width;
|
|
rect->y += fgeom->top_height;
|
|
rect->width -= fgeom->left_width + fgeom->right_width;
|
|
rect->height -= fgeom->top_height + fgeom->bottom_height;
|
|
}
|
|
|
|
static inline void
|
|
get_size_limits (const MetaWindow *window,
|
|
const MetaFrameGeometry *fgeom,
|
|
gboolean include_frame,
|
|
MetaRectangle *min_size,
|
|
MetaRectangle *max_size)
|
|
{
|
|
/* We pack the results into MetaRectangle structs just for convienience; we
|
|
* don't actually use the position of those rects.
|
|
*/
|
|
min_size->width = window->size_hints.min_width;
|
|
min_size->height = window->size_hints.min_height;
|
|
max_size->width = window->size_hints.max_width;
|
|
max_size->height = window->size_hints.max_height;
|
|
|
|
if (include_frame)
|
|
{
|
|
int fw = fgeom->left_width + fgeom->right_width;
|
|
int fh = fgeom->top_height + fgeom->bottom_height;
|
|
|
|
min_size->width += fw;
|
|
min_size->height += fh;
|
|
/* Do check to avoid overflow (e.g. max_size->width & max_size->height
|
|
* may be set to G_MAXINT by meta_set_normal_hints()).
|
|
*/
|
|
if (max_size->width < (G_MAXINT - fw))
|
|
max_size->width += fw;
|
|
else
|
|
max_size->width = G_MAXINT;
|
|
if (max_size->height < (G_MAXINT - fh))
|
|
max_size->height += fh;
|
|
else
|
|
max_size->height = G_MAXINT;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
constrain_maximization (MetaWindow *window,
|
|
ConstraintInfo *info,
|
|
ConstraintPriority priority,
|
|
gboolean check_only)
|
|
{
|
|
MetaRectangle target_size;
|
|
MetaRectangle min_size, max_size;
|
|
gboolean hminbad, vminbad;
|
|
gboolean horiz_equal, vert_equal;
|
|
gboolean constraint_already_satisfied;
|
|
|
|
if (priority > PRIORITY_MAXIMIZATION)
|
|
return TRUE;
|
|
|
|
/* Determine whether constraint applies; exit if it doesn't */
|
|
if (!window->maximized_horizontally && !window->maximized_vertically)
|
|
return TRUE;
|
|
|
|
/* Calculate target_size = maximized size of (window + frame) */
|
|
if (window->maximized_horizontally && window->maximized_vertically)
|
|
target_size = info->work_area_monitor;
|
|
else
|
|
{
|
|
/* Amount of maximization possible in a single direction depends
|
|
* on which struts could occlude the window given its current
|
|
* position. For example, a vertical partial strut on the right
|
|
* is only relevant for a horizontally maximized window when the
|
|
* window is at a vertical position where it could be occluded
|
|
* by that partial strut.
|
|
*/
|
|
MetaDirection direction;
|
|
GSList *active_workspace_struts;
|
|
|
|
if (window->maximized_horizontally)
|
|
direction = META_DIRECTION_HORIZONTAL;
|
|
else
|
|
direction = META_DIRECTION_VERTICAL;
|
|
active_workspace_struts = window->screen->active_workspace->all_struts;
|
|
|
|
target_size = info->current;
|
|
extend_by_frame (&target_size, info->fgeom);
|
|
meta_rectangle_expand_to_avoiding_struts (&target_size,
|
|
&info->entire_monitor,
|
|
direction,
|
|
active_workspace_struts);
|
|
}
|
|
/* Now make target_size = maximized size of client window */
|
|
unextend_by_frame (&target_size, info->fgeom);
|
|
|
|
/* Check min size constraints; max size constraints are ignored for maximized
|
|
* windows, as per bug 327543.
|
|
*/
|
|
get_size_limits (window, info->fgeom, FALSE, &min_size, &max_size);
|
|
hminbad = target_size.width < min_size.width && window->maximized_horizontally;
|
|
vminbad = target_size.height < min_size.height && window->maximized_vertically;
|
|
if (hminbad || vminbad)
|
|
return TRUE;
|
|
|
|
/* Determine whether constraint is already satisfied; exit if it is */
|
|
horiz_equal = target_size.x == info->current.x &&
|
|
target_size.width == info->current.width;
|
|
vert_equal = target_size.y == info->current.y &&
|
|
target_size.height == info->current.height;
|
|
constraint_already_satisfied =
|
|
(horiz_equal || !window->maximized_horizontally) &&
|
|
(vert_equal || !window->maximized_vertically);
|
|
if (check_only || constraint_already_satisfied)
|
|
return constraint_already_satisfied;
|
|
|
|
/*** Enforce constraint ***/
|
|
if (window->maximized_horizontally)
|
|
{
|
|
info->current.x = target_size.x;
|
|
info->current.width = target_size.width;
|
|
}
|
|
if (window->maximized_vertically)
|
|
{
|
|
info->current.y = target_size.y;
|
|
info->current.height = target_size.height;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
constrain_fullscreen (MetaWindow *window,
|
|
ConstraintInfo *info,
|
|
ConstraintPriority priority,
|
|
gboolean check_only)
|
|
{
|
|
MetaRectangle min_size, max_size, monitor;
|
|
gboolean too_big, too_small, constraint_already_satisfied;
|
|
|
|
if (priority > PRIORITY_FULLSCREEN)
|
|
return TRUE;
|
|
|
|
/* Determine whether constraint applies; exit if it doesn't */
|
|
if (!window->fullscreen)
|
|
return TRUE;
|
|
|
|
monitor = info->entire_monitor;
|
|
|
|
get_size_limits (window, info->fgeom, FALSE, &min_size, &max_size);
|
|
too_big = !meta_rectangle_could_fit_rect (&monitor, &min_size);
|
|
too_small = !meta_rectangle_could_fit_rect (&max_size, &monitor);
|
|
if (too_big || too_small)
|
|
return TRUE;
|
|
|
|
/* Determine whether constraint is already satisfied; exit if it is */
|
|
constraint_already_satisfied =
|
|
meta_rectangle_equal (&info->current, &monitor);
|
|
if (check_only || constraint_already_satisfied)
|
|
return constraint_already_satisfied;
|
|
|
|
/*** Enforce constraint ***/
|
|
info->current = monitor;
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
constrain_size_increments (MetaWindow *window,
|
|
ConstraintInfo *info,
|
|
ConstraintPriority priority,
|
|
gboolean check_only)
|
|
{
|
|
int bh, hi, bw, wi, extra_height, extra_width;
|
|
int new_width, new_height;
|
|
gboolean constraint_already_satisfied;
|
|
MetaRectangle *start_rect;
|
|
|
|
if (priority > PRIORITY_SIZE_HINTS_INCREMENTS)
|
|
return TRUE;
|
|
|
|
/* Determine whether constraint applies; exit if it doesn't */
|
|
if (META_WINDOW_MAXIMIZED (window) || window->fullscreen ||
|
|
info->action_type == ACTION_MOVE)
|
|
return TRUE;
|
|
|
|
/* Determine whether constraint is already satisfied; exit if it is */
|
|
bh = window->size_hints.base_height;
|
|
hi = window->size_hints.height_inc;
|
|
bw = window->size_hints.base_width;
|
|
wi = window->size_hints.width_inc;
|
|
extra_height = (info->current.height - bh) % hi;
|
|
extra_width = (info->current.width - bw) % wi;
|
|
/* ignore size increments for maximized windows */
|
|
if (window->maximized_horizontally)
|
|
extra_width *= 0;
|
|
if (window->maximized_vertically)
|
|
extra_height *= 0;
|
|
/* constraint is satisfied iff there is no extra height or width */
|
|
constraint_already_satisfied =
|
|
(extra_height == 0 && extra_width == 0);
|
|
|
|
if (check_only || constraint_already_satisfied)
|
|
return constraint_already_satisfied;
|
|
|
|
/*** Enforce constraint ***/
|
|
new_width = info->current.width - extra_width;
|
|
new_height = info->current.height - extra_height;
|
|
|
|
/* Adjusting down instead of up (as done in the above two lines) may
|
|
* violate minimum size constraints; fix the adjustment if this
|
|
* happens.
|
|
*/
|
|
if (new_width < window->size_hints.min_width)
|
|
new_width += ((window->size_hints.min_width - new_width)/wi + 1)*wi;
|
|
if (new_height < window->size_hints.min_height)
|
|
new_height += ((window->size_hints.min_height - new_height)/hi + 1)*hi;
|
|
|
|
/* Figure out what original rect to pass to meta_rectangle_resize_with_gravity
|
|
* See bug 448183
|
|
*/
|
|
if (info->action_type == ACTION_MOVE_AND_RESIZE)
|
|
start_rect = &info->current;
|
|
else
|
|
start_rect = &info->orig;
|
|
|
|
/* Resize to the new size */
|
|
meta_rectangle_resize_with_gravity (start_rect,
|
|
&info->current,
|
|
info->resize_gravity,
|
|
new_width,
|
|
new_height);
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
constrain_size_limits (MetaWindow *window,
|
|
ConstraintInfo *info,
|
|
ConstraintPriority priority,
|
|
gboolean check_only)
|
|
{
|
|
MetaRectangle min_size, max_size;
|
|
gboolean too_big, too_small, constraint_already_satisfied;
|
|
int new_width, new_height;
|
|
MetaRectangle *start_rect;
|
|
|
|
if (priority > PRIORITY_SIZE_HINTS_LIMITS)
|
|
return TRUE;
|
|
|
|
/* Determine whether constraint applies; exit if it doesn't.
|
|
*
|
|
* Note: The old code didn't apply this constraint for fullscreen or
|
|
* maximized windows--but that seems odd to me. *shrug*
|
|
*/
|
|
if (info->action_type == ACTION_MOVE)
|
|
return TRUE;
|
|
|
|
/* Determine whether constraint is already satisfied; exit if it is */
|
|
get_size_limits (window, info->fgeom, FALSE, &min_size, &max_size);
|
|
/* We ignore max-size limits for maximized windows; see #327543 */
|
|
if (window->maximized_horizontally)
|
|
max_size.width = MAX (max_size.width, info->current.width);
|
|
if (window->maximized_vertically)
|
|
max_size.height = MAX (max_size.height, info->current.height);
|
|
too_small = !meta_rectangle_could_fit_rect (&info->current, &min_size);
|
|
too_big = !meta_rectangle_could_fit_rect (&max_size, &info->current);
|
|
constraint_already_satisfied = !too_big && !too_small;
|
|
if (check_only || constraint_already_satisfied)
|
|
return constraint_already_satisfied;
|
|
|
|
/*** Enforce constraint ***/
|
|
new_width = CLAMP (info->current.width, min_size.width, max_size.width);
|
|
new_height = CLAMP (info->current.height, min_size.height, max_size.height);
|
|
|
|
/* Figure out what original rect to pass to meta_rectangle_resize_with_gravity
|
|
* See bug 448183
|
|
*/
|
|
if (info->action_type == ACTION_MOVE_AND_RESIZE)
|
|
start_rect = &info->current;
|
|
else
|
|
start_rect = &info->orig;
|
|
|
|
meta_rectangle_resize_with_gravity (start_rect,
|
|
&info->current,
|
|
info->resize_gravity,
|
|
new_width,
|
|
new_height);
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
constrain_aspect_ratio (MetaWindow *window,
|
|
ConstraintInfo *info,
|
|
ConstraintPriority priority,
|
|
gboolean check_only)
|
|
{
|
|
double minr, maxr;
|
|
gboolean constraints_are_inconsistent, constraint_already_satisfied;
|
|
int fudge, new_width, new_height;
|
|
double best_width, best_height;
|
|
double alt_width, alt_height;
|
|
MetaRectangle *start_rect;
|
|
|
|
if (priority > PRIORITY_ASPECT_RATIO)
|
|
return TRUE;
|
|
|
|
/* Determine whether constraint applies; exit if it doesn't. */
|
|
minr = window->size_hints.min_aspect.x /
|
|
(double)window->size_hints.min_aspect.y;
|
|
maxr = window->size_hints.max_aspect.x /
|
|
(double)window->size_hints.max_aspect.y;
|
|
constraints_are_inconsistent = minr > maxr;
|
|
if (constraints_are_inconsistent ||
|
|
META_WINDOW_MAXIMIZED (window) || window->fullscreen ||
|
|
info->action_type == ACTION_MOVE)
|
|
return TRUE;
|
|
|
|
/* Determine whether constraint is already satisfied; exit if it is. We
|
|
* need the following to hold:
|
|
*
|
|
* width
|
|
* minr <= ------ <= maxr
|
|
* height
|
|
*
|
|
* But we need to allow for some slight fudging since width and height
|
|
* are integers instead of floating point numbers (this is particularly
|
|
* important when minr == maxr), so we allow width and height to be off
|
|
* a little bit from strictly satisfying these equations. For just one
|
|
* sided resizing, we have to make the fudge factor a little bigger
|
|
* because of how meta_rectangle_resize_with_gravity treats those as
|
|
* being a resize increment (FIXME: I should handle real resize
|
|
* increments better here...)
|
|
*/
|
|
switch (info->resize_gravity)
|
|
{
|
|
case WestGravity:
|
|
case NorthGravity:
|
|
case SouthGravity:
|
|
case EastGravity:
|
|
fudge = 2;
|
|
break;
|
|
|
|
case NorthWestGravity:
|
|
case SouthWestGravity:
|
|
case CenterGravity:
|
|
case NorthEastGravity:
|
|
case SouthEastGravity:
|
|
case StaticGravity:
|
|
default:
|
|
fudge = 1;
|
|
break;
|
|
}
|
|
constraint_already_satisfied =
|
|
info->current.width - (info->current.height * minr ) > -minr*fudge &&
|
|
info->current.width - (info->current.height * maxr ) < maxr*fudge;
|
|
if (check_only || constraint_already_satisfied)
|
|
return constraint_already_satisfied;
|
|
|
|
/*** Enforce constraint ***/
|
|
new_width = info->current.width;
|
|
new_height = info->current.height;
|
|
|
|
switch (info->resize_gravity)
|
|
{
|
|
case WestGravity:
|
|
case EastGravity:
|
|
/* Yeah, I suck for doing implicit rounding -- sue me */
|
|
new_height = CLAMP (new_height, new_width / maxr, new_width / minr);
|
|
break;
|
|
|
|
case NorthGravity:
|
|
case SouthGravity:
|
|
/* Yeah, I suck for doing implicit rounding -- sue me */
|
|
new_width = CLAMP (new_width, new_height * minr, new_height * maxr);
|
|
break;
|
|
|
|
case NorthWestGravity:
|
|
case SouthWestGravity:
|
|
case CenterGravity:
|
|
case NorthEastGravity:
|
|
case SouthEastGravity:
|
|
case StaticGravity:
|
|
default:
|
|
/* Find what width would correspond to new_height, and what height would
|
|
* correspond to new_width */
|
|
alt_width = CLAMP (new_width, new_height * minr, new_height * maxr);
|
|
alt_height = CLAMP (new_height, new_width / maxr, new_width / minr);
|
|
|
|
/* The line connecting the points (alt_width, new_height) and
|
|
* (new_width, alt_height) provide a range of
|
|
* valid-for-the-aspect-ratio-constraint sizes. We want the
|
|
* size in that range closest to the value requested, i.e. the
|
|
* point on the line which is closest to the point (new_width,
|
|
* new_height)
|
|
*/
|
|
meta_rectangle_find_linepoint_closest_to_point (alt_width, new_height,
|
|
new_width, alt_height,
|
|
new_width, new_height,
|
|
&best_width, &best_height);
|
|
|
|
/* Yeah, I suck for doing implicit rounding -- sue me */
|
|
new_width = best_width;
|
|
new_height = best_height;
|
|
|
|
break;
|
|
}
|
|
|
|
/* Figure out what original rect to pass to meta_rectangle_resize_with_gravity
|
|
* See bug 448183
|
|
*/
|
|
if (info->action_type == ACTION_MOVE_AND_RESIZE)
|
|
start_rect = &info->current;
|
|
else
|
|
start_rect = &info->orig;
|
|
|
|
meta_rectangle_resize_with_gravity (start_rect,
|
|
&info->current,
|
|
info->resize_gravity,
|
|
new_width,
|
|
new_height);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
do_screen_and_monitor_relative_constraints (
|
|
MetaWindow *window,
|
|
GList *region_spanning_rectangles,
|
|
ConstraintInfo *info,
|
|
gboolean check_only)
|
|
{
|
|
gboolean exit_early = FALSE, constraint_satisfied;
|
|
MetaRectangle how_far_it_can_be_smushed, min_size, max_size;
|
|
|
|
#ifdef WITH_VERBOSE_MODE
|
|
if (meta_is_verbose ())
|
|
{
|
|
/* First, log some debugging information */
|
|
char spanning_region[1 + 28 * g_list_length (region_spanning_rectangles)];
|
|
|
|
meta_topic (META_DEBUG_GEOMETRY,
|
|
"screen/monitor constraint; region_spanning_rectangles: %s\n",
|
|
meta_rectangle_region_to_string (region_spanning_rectangles, ", ",
|
|
spanning_region));
|
|
}
|
|
#endif
|
|
|
|
/* Determine whether constraint applies; exit if it doesn't */
|
|
how_far_it_can_be_smushed = info->current;
|
|
get_size_limits (window, info->fgeom, TRUE, &min_size, &max_size);
|
|
extend_by_frame (&info->current, info->fgeom);
|
|
|
|
if (info->action_type != ACTION_MOVE)
|
|
{
|
|
if (!(info->fixed_directions & FIXED_DIRECTION_X))
|
|
how_far_it_can_be_smushed.width = min_size.width;
|
|
|
|
if (!(info->fixed_directions & FIXED_DIRECTION_Y))
|
|
how_far_it_can_be_smushed.height = min_size.height;
|
|
}
|
|
if (!meta_rectangle_could_fit_in_region (region_spanning_rectangles,
|
|
&how_far_it_can_be_smushed))
|
|
exit_early = TRUE;
|
|
|
|
/* Determine whether constraint is already satisfied; exit if it is */
|
|
constraint_satisfied =
|
|
meta_rectangle_contained_in_region (region_spanning_rectangles,
|
|
&info->current);
|
|
if (exit_early || constraint_satisfied || check_only)
|
|
{
|
|
unextend_by_frame (&info->current, info->fgeom);
|
|
return constraint_satisfied;
|
|
}
|
|
|
|
/* Enforce constraint */
|
|
|
|
/* Clamp rectangle size for resize or move+resize actions */
|
|
if (info->action_type != ACTION_MOVE)
|
|
meta_rectangle_clamp_to_fit_into_region (region_spanning_rectangles,
|
|
info->fixed_directions,
|
|
&info->current,
|
|
&min_size);
|
|
|
|
if (info->is_user_action && info->action_type == ACTION_RESIZE)
|
|
/* For user resize, clip to the relevant region */
|
|
meta_rectangle_clip_to_region (region_spanning_rectangles,
|
|
info->fixed_directions,
|
|
&info->current);
|
|
else
|
|
/* For everything else, shove the rectangle into the relevant region */
|
|
meta_rectangle_shove_into_region (region_spanning_rectangles,
|
|
info->fixed_directions,
|
|
&info->current);
|
|
|
|
unextend_by_frame (&info->current, info->fgeom);
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
constrain_to_single_monitor (MetaWindow *window,
|
|
ConstraintInfo *info,
|
|
ConstraintPriority priority,
|
|
gboolean check_only)
|
|
{
|
|
if (priority > PRIORITY_ENTIRELY_VISIBLE_ON_SINGLE_MONITOR)
|
|
return TRUE;
|
|
|
|
/* Exit early if we know the constraint won't apply--note that this constraint
|
|
* is only meant for normal windows (e.g. we don't want docks to be shoved
|
|
* "onscreen" by their own strut) and we can't apply it to frameless windows
|
|
* or else users will be unable to move windows such as XMMS across monitors.
|
|
*/
|
|
if (window->type == META_WINDOW_DESKTOP ||
|
|
window->type == META_WINDOW_DOCK ||
|
|
window->screen->n_monitor_infos == 1 ||
|
|
!window->require_on_single_monitor ||
|
|
!window->frame ||
|
|
info->is_user_action)
|
|
return TRUE;
|
|
|
|
/* Have a helper function handle the constraint for us */
|
|
return do_screen_and_monitor_relative_constraints (window,
|
|
info->usable_monitor_region,
|
|
info,
|
|
check_only);
|
|
}
|
|
|
|
static gboolean
|
|
constrain_fully_onscreen (MetaWindow *window,
|
|
ConstraintInfo *info,
|
|
ConstraintPriority priority,
|
|
gboolean check_only)
|
|
{
|
|
if (priority > PRIORITY_ENTIRELY_VISIBLE_ON_WORKAREA)
|
|
return TRUE;
|
|
|
|
/* Exit early if we know the constraint won't apply--note that this constraint
|
|
* is only meant for normal windows (e.g. we don't want docks to be shoved
|
|
* "onscreen" by their own strut).
|
|
*/
|
|
if (window->type == META_WINDOW_DESKTOP ||
|
|
window->type == META_WINDOW_DOCK ||
|
|
window->fullscreen ||
|
|
!window->require_fully_onscreen ||
|
|
info->is_user_action)
|
|
return TRUE;
|
|
|
|
/* Have a helper function handle the constraint for us */
|
|
return do_screen_and_monitor_relative_constraints (window,
|
|
info->usable_screen_region,
|
|
info,
|
|
check_only);
|
|
}
|
|
|
|
static gboolean
|
|
constrain_titlebar_visible (MetaWindow *window,
|
|
ConstraintInfo *info,
|
|
ConstraintPriority priority,
|
|
gboolean check_only)
|
|
{
|
|
gboolean unconstrained_user_action;
|
|
gboolean retval;
|
|
int bottom_amount;
|
|
int horiz_amount_offscreen, vert_amount_offscreen;
|
|
int horiz_amount_onscreen, vert_amount_onscreen;
|
|
|
|
if (priority > PRIORITY_TITLEBAR_VISIBLE)
|
|
return TRUE;
|
|
|
|
/* Allow the titlebar beyond the top of the screen only if the user wasn't
|
|
* clicking on the frame to start the move.
|
|
*/
|
|
unconstrained_user_action =
|
|
info->is_user_action && !window->display->grab_frame_action;
|
|
|
|
/* Exit early if we know the constraint won't apply--note that this constraint
|
|
* is only meant for normal windows (e.g. we don't want docks to be shoved
|
|
* "onscreen" by their own strut).
|
|
*/
|
|
if (window->type == META_WINDOW_DESKTOP ||
|
|
window->type == META_WINDOW_DOCK ||
|
|
window->fullscreen ||
|
|
!window->require_titlebar_visible ||
|
|
!window->decorated ||
|
|
unconstrained_user_action)
|
|
return TRUE;
|
|
|
|
/* Determine how much offscreen things are allowed. We first need to
|
|
* figure out how much must remain on the screen. For that, we use 25%
|
|
* window width/height but clamp to the range of (10,75) pixels. This is
|
|
* somewhat of a seat of my pants random guess at what might look good.
|
|
* Then, the amount that is allowed off is just the window size minus
|
|
* this amount (but no less than 0 for tiny windows).
|
|
*/
|
|
horiz_amount_onscreen = info->current.width / 4;
|
|
vert_amount_onscreen = info->current.height / 4;
|
|
horiz_amount_onscreen = CLAMP (horiz_amount_onscreen, 10, 75);
|
|
vert_amount_onscreen = CLAMP (vert_amount_onscreen, 10, 75);
|
|
horiz_amount_offscreen = info->current.width - horiz_amount_onscreen;
|
|
vert_amount_offscreen = info->current.height - vert_amount_onscreen;
|
|
horiz_amount_offscreen = MAX (horiz_amount_offscreen, 0);
|
|
vert_amount_offscreen = MAX (vert_amount_offscreen, 0);
|
|
/* Allow the titlebar to touch the bottom panel; If there is no titlebar,
|
|
* require vert_amount to remain on the screen.
|
|
*/
|
|
if (window->frame)
|
|
{
|
|
bottom_amount = info->current.height + info->fgeom->bottom_height;
|
|
vert_amount_onscreen = info->fgeom->top_height;
|
|
}
|
|
else
|
|
bottom_amount = vert_amount_offscreen;
|
|
|
|
/* Extend the region, have a helper function handle the constraint,
|
|
* then return the region to its original size.
|
|
*/
|
|
meta_rectangle_expand_region_conditionally (info->usable_screen_region,
|
|
horiz_amount_offscreen,
|
|
horiz_amount_offscreen,
|
|
0, /* Don't let titlebar off */
|
|
bottom_amount,
|
|
horiz_amount_onscreen,
|
|
vert_amount_onscreen);
|
|
retval =
|
|
do_screen_and_monitor_relative_constraints (window,
|
|
info->usable_screen_region,
|
|
info,
|
|
check_only);
|
|
meta_rectangle_expand_region_conditionally (info->usable_screen_region,
|
|
-horiz_amount_offscreen,
|
|
-horiz_amount_offscreen,
|
|
0, /* Don't let titlebar off */
|
|
-bottom_amount,
|
|
horiz_amount_onscreen,
|
|
vert_amount_onscreen);
|
|
|
|
return retval;
|
|
}
|
|
|
|
static gboolean
|
|
constrain_partially_onscreen (MetaWindow *window,
|
|
ConstraintInfo *info,
|
|
ConstraintPriority priority,
|
|
gboolean check_only)
|
|
{
|
|
gboolean retval;
|
|
int top_amount, bottom_amount;
|
|
int horiz_amount_offscreen, vert_amount_offscreen;
|
|
int horiz_amount_onscreen, vert_amount_onscreen;
|
|
|
|
if (priority > PRIORITY_PARTIALLY_VISIBLE_ON_WORKAREA)
|
|
return TRUE;
|
|
|
|
/* Exit early if we know the constraint won't apply--note that this constraint
|
|
* is only meant for normal windows (e.g. we don't want docks to be shoved
|
|
* "onscreen" by their own strut).
|
|
*/
|
|
if (window->type == META_WINDOW_DESKTOP ||
|
|
window->type == META_WINDOW_DOCK)
|
|
return TRUE;
|
|
|
|
/* Determine how much offscreen things are allowed. We first need to
|
|
* figure out how much must remain on the screen. For that, we use 25%
|
|
* window width/height but clamp to the range of (10,75) pixels. This is
|
|
* somewhat of a seat of my pants random guess at what might look good.
|
|
* Then, the amount that is allowed off is just the window size minus
|
|
* this amount (but no less than 0 for tiny windows).
|
|
*/
|
|
horiz_amount_onscreen = info->current.width / 4;
|
|
vert_amount_onscreen = info->current.height / 4;
|
|
horiz_amount_onscreen = CLAMP (horiz_amount_onscreen, 10, 75);
|
|
vert_amount_onscreen = CLAMP (vert_amount_onscreen, 10, 75);
|
|
horiz_amount_offscreen = info->current.width - horiz_amount_onscreen;
|
|
vert_amount_offscreen = info->current.height - vert_amount_onscreen;
|
|
horiz_amount_offscreen = MAX (horiz_amount_offscreen, 0);
|
|
vert_amount_offscreen = MAX (vert_amount_offscreen, 0);
|
|
top_amount = vert_amount_offscreen;
|
|
/* Allow the titlebar to touch the bottom panel; If there is no titlebar,
|
|
* require vert_amount to remain on the screen.
|
|
*/
|
|
if (window->frame)
|
|
{
|
|
bottom_amount = info->current.height + info->fgeom->bottom_height;
|
|
vert_amount_onscreen = info->fgeom->top_height;
|
|
}
|
|
else
|
|
bottom_amount = vert_amount_offscreen;
|
|
|
|
/* Extend the region, have a helper function handle the constraint,
|
|
* then return the region to its original size.
|
|
*/
|
|
meta_rectangle_expand_region_conditionally (info->usable_screen_region,
|
|
horiz_amount_offscreen,
|
|
horiz_amount_offscreen,
|
|
top_amount,
|
|
bottom_amount,
|
|
horiz_amount_onscreen,
|
|
vert_amount_onscreen);
|
|
retval =
|
|
do_screen_and_monitor_relative_constraints (window,
|
|
info->usable_screen_region,
|
|
info,
|
|
check_only);
|
|
meta_rectangle_expand_region_conditionally (info->usable_screen_region,
|
|
-horiz_amount_offscreen,
|
|
-horiz_amount_offscreen,
|
|
-top_amount,
|
|
-bottom_amount,
|
|
horiz_amount_onscreen,
|
|
vert_amount_onscreen);
|
|
|
|
return retval;
|
|
}
|