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920dae64 AT |
1 | # panedwindow.tcl -- |
2 | # | |
3 | # This file defines the default bindings for Tk panedwindow widgets and | |
4 | # provides procedures that help in implementing those bindings. | |
5 | # | |
6 | # RCS: @(#) $Id: panedwindow.tcl,v 1.6.2.3 2005/02/12 00:48:05 hobbs Exp $ | |
7 | # | |
8 | ||
9 | bind Panedwindow <Button-1> { ::tk::panedwindow::MarkSash %W %x %y 1 } | |
10 | bind Panedwindow <Button-2> { ::tk::panedwindow::MarkSash %W %x %y 0 } | |
11 | ||
12 | bind Panedwindow <B1-Motion> { ::tk::panedwindow::DragSash %W %x %y 1 } | |
13 | bind Panedwindow <B2-Motion> { ::tk::panedwindow::DragSash %W %x %y 0 } | |
14 | ||
15 | bind Panedwindow <ButtonRelease-1> {::tk::panedwindow::ReleaseSash %W 1} | |
16 | bind Panedwindow <ButtonRelease-2> {::tk::panedwindow::ReleaseSash %W 0} | |
17 | ||
18 | bind Panedwindow <Motion> { ::tk::panedwindow::Motion %W %x %y } | |
19 | ||
20 | bind Panedwindow <Leave> { ::tk::panedwindow::Leave %W } | |
21 | ||
22 | # Initialize namespace | |
23 | namespace eval ::tk::panedwindow {} | |
24 | ||
25 | # ::tk::panedwindow::MarkSash -- | |
26 | # | |
27 | # Handle marking the correct sash for possible dragging | |
28 | # | |
29 | # Arguments: | |
30 | # w the widget | |
31 | # x widget local x coord | |
32 | # y widget local y coord | |
33 | # proxy whether this should be a proxy sash | |
34 | # Results: | |
35 | # None | |
36 | # | |
37 | proc ::tk::panedwindow::MarkSash {w x y proxy} { | |
38 | if {[$w cget -opaqueresize]} { set proxy 0 } | |
39 | set what [$w identify $x $y] | |
40 | if { [llength $what] == 2 } { | |
41 | foreach {index which} $what break | |
42 | if { !$::tk_strictMotif || [string equal $which "handle"] } { | |
43 | if {!$proxy} { $w sash mark $index $x $y } | |
44 | set ::tk::Priv(sash) $index | |
45 | foreach {sx sy} [$w sash coord $index] break | |
46 | set ::tk::Priv(dx) [expr {$sx-$x}] | |
47 | set ::tk::Priv(dy) [expr {$sy-$y}] | |
48 | # Do this to init the proxy location | |
49 | DragSash $w $x $y $proxy | |
50 | } | |
51 | } | |
52 | } | |
53 | ||
54 | # ::tk::panedwindow::DragSash -- | |
55 | # | |
56 | # Handle dragging of the correct sash | |
57 | # | |
58 | # Arguments: | |
59 | # w the widget | |
60 | # x widget local x coord | |
61 | # y widget local y coord | |
62 | # proxy whether this should be a proxy sash | |
63 | # Results: | |
64 | # Moves sash | |
65 | # | |
66 | proc ::tk::panedwindow::DragSash {w x y proxy} { | |
67 | if {[$w cget -opaqueresize]} { set proxy 0 } | |
68 | if { [info exists ::tk::Priv(sash)] } { | |
69 | if {$proxy} { | |
70 | $w proxy place \ | |
71 | [expr {$x+$::tk::Priv(dx)}] [expr {$y+$::tk::Priv(dy)}] | |
72 | } else { | |
73 | $w sash place $::tk::Priv(sash) \ | |
74 | [expr {$x+$::tk::Priv(dx)}] [expr {$y+$::tk::Priv(dy)}] | |
75 | } | |
76 | } | |
77 | } | |
78 | ||
79 | # ::tk::panedwindow::ReleaseSash -- | |
80 | # | |
81 | # Handle releasing of the sash | |
82 | # | |
83 | # Arguments: | |
84 | # w the widget | |
85 | # proxy whether this should be a proxy sash | |
86 | # Results: | |
87 | # Returns ... | |
88 | # | |
89 | proc ::tk::panedwindow::ReleaseSash {w proxy} { | |
90 | if {[$w cget -opaqueresize]} { set proxy 0 } | |
91 | if { [info exists ::tk::Priv(sash)] } { | |
92 | if {$proxy} { | |
93 | foreach {x y} [$w proxy coord] break | |
94 | $w sash place $::tk::Priv(sash) $x $y | |
95 | $w proxy forget | |
96 | } | |
97 | unset ::tk::Priv(sash) ::tk::Priv(dx) ::tk::Priv(dy) | |
98 | } | |
99 | } | |
100 | ||
101 | # ::tk::panedwindow::Motion -- | |
102 | # | |
103 | # Handle motion on the widget. This is used to change the cursor | |
104 | # when the user moves over the sash area. | |
105 | # | |
106 | # Arguments: | |
107 | # w the widget | |
108 | # x widget local x coord | |
109 | # y widget local y coord | |
110 | # Results: | |
111 | # May change the cursor. Sets up a timer to verify that we are still | |
112 | # over the widget. | |
113 | # | |
114 | proc ::tk::panedwindow::Motion {w x y} { | |
115 | variable ::tk::Priv | |
116 | set id [$w identify $x $y] | |
117 | if {([llength $id] == 2) && \ | |
118 | (!$::tk_strictMotif || [string equal [lindex $id 1] "handle"])} { | |
119 | if { ![info exists Priv($w,panecursor)] } { | |
120 | set Priv($w,panecursor) [$w cget -cursor] | |
121 | if { [string equal [$w cget -sashcursor] ""] } { | |
122 | if { [string equal [$w cget -orient] "horizontal"] } { | |
123 | $w configure -cursor sb_h_double_arrow | |
124 | } else { | |
125 | $w configure -cursor sb_v_double_arrow | |
126 | } | |
127 | } else { | |
128 | $w configure -cursor [$w cget -sashcursor] | |
129 | } | |
130 | if {[info exists Priv($w,pwAfterId)]} { | |
131 | after cancel $Priv($w,pwAfterId) | |
132 | } | |
133 | set Priv($w,pwAfterId) [after 150 \ | |
134 | [list ::tk::panedwindow::Cursor $w]] | |
135 | } | |
136 | return | |
137 | } | |
138 | if { [info exists Priv($w,panecursor)] } { | |
139 | $w configure -cursor $Priv($w,panecursor) | |
140 | unset Priv($w,panecursor) | |
141 | } | |
142 | } | |
143 | ||
144 | # ::tk::panedwindow::Cursor -- | |
145 | # | |
146 | # Handles returning the normal cursor when we are no longer over the | |
147 | # sash area. This needs to be done this way, because the panedwindow | |
148 | # won't see Leave events when the mouse moves from the sash to a | |
149 | # paned child, although the child does receive an Enter event. | |
150 | # | |
151 | # Arguments: | |
152 | # w the widget | |
153 | # Results: | |
154 | # May restore the default cursor, or schedule a timer to do it. | |
155 | # | |
156 | proc ::tk::panedwindow::Cursor {w} { | |
157 | variable ::tk::Priv | |
158 | # Make sure to check window existence in case it is destroyed. | |
159 | if {[info exists Priv($w,panecursor)] && [winfo exists $w]} { | |
160 | if {[winfo containing [winfo pointerx $w] [winfo pointery $w]] eq $w} { | |
161 | set Priv($w,pwAfterId) [after 150 \ | |
162 | [list ::tk::panedwindow::Cursor $w]] | |
163 | } else { | |
164 | $w configure -cursor $Priv($w,panecursor) | |
165 | unset Priv($w,panecursor) | |
166 | if {[info exists Priv($w,pwAfterId)]} { | |
167 | after cancel $Priv($w,pwAfterId) | |
168 | unset Priv($w,pwAfterId) | |
169 | } | |
170 | } | |
171 | } | |
172 | } | |
173 | ||
174 | # ::tk::panedwindow::Leave -- | |
175 | # | |
176 | # Return to default cursor when leaving the pw widget. | |
177 | # | |
178 | # Arguments: | |
179 | # w the widget | |
180 | # Results: | |
181 | # Restores the default cursor | |
182 | # | |
183 | proc ::tk::panedwindow::Leave {w} { | |
184 | if {[info exists ::tk::Priv($w,panecursor)]} { | |
185 | $w configure -cursor $::tk::Priv($w,panecursor) | |
186 | unset ::tk::Priv($w,panecursor) | |
187 | } | |
188 | } |