|
0
|
1 |
"
|
|
5
|
2 |
COPYRIGHT (c) 1989 by Claus Gittinger
|
|
0
|
3 |
All Rights Reserved
|
|
|
4 |
|
|
|
5 |
This software is furnished under a license and may be used
|
|
|
6 |
only in accordance with the terms of that license and with the
|
|
|
7 |
inclusion of the above copyright notice. This software may not
|
|
|
8 |
be provided or otherwise made available to, or used by, any
|
|
|
9 |
other person. No title to or ownership of the software is
|
|
|
10 |
hereby transferred.
|
|
|
11 |
"
|
|
|
12 |
|
|
|
13 |
Scroller subclass:#HorizontalScroller
|
|
|
14 |
instanceVariableNames:''
|
|
|
15 |
classVariableNames:''
|
|
|
16 |
poolDictionaries:''
|
|
|
17 |
category:'Views-Interactors'
|
|
|
18 |
!
|
|
|
19 |
|
|
|
20 |
HorizontalScroller comment:'
|
|
|
21 |
|
|
5
|
22 |
COPYRIGHT (c) 1989 by Claus Gittinger
|
|
0
|
23 |
All Rights Reserved
|
|
|
24 |
|
|
|
25 |
the scroller part of a horizontal scrollbar
|
|
|
26 |
|
|
5
|
27 |
$Header: /cvs/stx/stx/libwidg/Attic/HScroller.st,v 1.3 1993-10-13 02:48:01 claus Exp $
|
|
0
|
28 |
written spring/summer 89 by claus
|
|
|
29 |
'!
|
|
|
30 |
|
|
|
31 |
!HorizontalScroller methodsFor:'initialization'!
|
|
|
32 |
|
|
|
33 |
initialize
|
|
|
34 |
super initialize.
|
|
|
35 |
moveDirection := #x
|
|
|
36 |
! !
|
|
|
37 |
|
|
|
38 |
!HorizontalScroller methodsFor:'accessing'!
|
|
|
39 |
|
|
|
40 |
thumbOrigin:newOrigin
|
|
|
41 |
"set the thumbs origin (in percent)"
|
|
|
42 |
|
|
|
43 |
|realNewOrigin oldFrame oldLeft oldRight thumbLeft thumbRight
|
|
|
44 |
tH tW delta top|
|
|
|
45 |
|
|
|
46 |
((newOrigin + thumbHeight) > 100) ifTrue:[
|
|
|
47 |
realNewOrigin := 100 - thumbHeight
|
|
|
48 |
] ifFalse: [
|
|
|
49 |
realNewOrigin := newOrigin
|
|
|
50 |
].
|
|
|
51 |
(realNewOrigin > 100) ifTrue:[
|
|
|
52 |
realNewOrigin := 100
|
|
|
53 |
] ifFalse: [
|
|
|
54 |
(realNewOrigin < 0) ifTrue:[
|
|
|
55 |
realNewOrigin := 0
|
|
|
56 |
]
|
|
|
57 |
].
|
|
|
58 |
(realNewOrigin = thumbOrigin) ifFalse:[
|
|
|
59 |
oldFrame := thumbFrame.
|
|
|
60 |
thumbOrigin := realNewOrigin.
|
|
|
61 |
self computeThumbFrame.
|
|
|
62 |
(thumbHeight = 100) ifTrue:[^ self].
|
|
|
63 |
|
|
|
64 |
shown ifTrue:[
|
|
|
65 |
(thumbFrame ~~ oldFrame) ifTrue:[
|
|
|
66 |
tH := thumbFrame height.
|
|
|
67 |
tW := thumbFrame width.
|
|
|
68 |
oldLeft := oldFrame left.
|
|
|
69 |
oldRight := oldLeft + tW.
|
|
|
70 |
|
|
|
71 |
thumbLeft := thumbFrame left.
|
|
|
72 |
thumbRight := thumbLeft + tW.
|
|
|
73 |
|
|
|
74 |
top := thumbFrame top.
|
|
|
75 |
|
|
|
76 |
(oldRight >= width) ifTrue:[
|
|
|
77 |
"cannot copy - thumb was behind end"
|
|
|
78 |
self drawThumbBackgroundInX:oldLeft y:top
|
|
|
79 |
width:(width - oldLeft" - 1") height:tH.
|
|
|
80 |
self drawThumb.
|
|
|
81 |
^ self
|
|
|
82 |
].
|
|
|
83 |
|
|
|
84 |
self copyFrom:self x:oldLeft y:top
|
|
|
85 |
toX:thumbLeft y:top
|
|
|
86 |
width:tW height:tH.
|
|
|
87 |
|
|
|
88 |
oldLeft > thumbLeft ifTrue:[
|
|
|
89 |
delta := oldLeft - thumbLeft.
|
|
|
90 |
oldLeft > thumbRight ifTrue:[
|
|
|
91 |
self drawThumbBackgroundInX:oldLeft y:top
|
|
|
92 |
width:(tW + 1) height:tH
|
|
|
93 |
] ifFalse:[
|
|
|
94 |
self drawThumbBackgroundInX:thumbRight y:top
|
|
|
95 |
width:delta height:tH
|
|
|
96 |
]
|
|
|
97 |
] ifFalse:[
|
|
|
98 |
delta := thumbLeft - oldLeft.
|
|
|
99 |
oldRight < thumbLeft ifTrue:[
|
|
|
100 |
self drawThumbBackgroundInX:oldLeft y:top
|
|
|
101 |
width:tW + 1 height:tH
|
|
|
102 |
] ifFalse:[
|
|
|
103 |
self drawThumbBackgroundInX:oldLeft y:top
|
|
|
104 |
width:delta height:tH
|
|
|
105 |
]
|
|
|
106 |
].
|
|
|
107 |
"View3D ifTrue:[ "
|
|
|
108 |
self waitForExpose
|
|
|
109 |
"] "
|
|
|
110 |
]
|
|
|
111 |
]
|
|
|
112 |
]
|
|
|
113 |
!
|
|
|
114 |
|
|
|
115 |
setThumbFor:aView
|
|
|
116 |
"get contents and size info from aView and adjust thumb"
|
|
|
117 |
|
|
|
118 |
|percentHeight percentOrigin totalWidth|
|
|
|
119 |
|
|
|
120 |
aView isNil ifTrue:[
|
|
|
121 |
totalWidth := 0
|
|
|
122 |
] ifFalse:[
|
|
|
123 |
totalWidth := aView widthOfContents
|
|
|
124 |
].
|
|
|
125 |
(totalWidth = 0) ifTrue:[
|
|
|
126 |
percentHeight := 100.
|
|
|
127 |
percentOrigin := 100
|
|
|
128 |
] ifFalse:[
|
|
|
129 |
percentHeight := (aView innerWidth) * 100 // totalWidth.
|
|
|
130 |
percentOrigin := (aView xOriginOfContents) * 100 // totalWidth
|
|
|
131 |
].
|
|
|
132 |
(percentHeight = thumbHeight) ifTrue:[
|
|
|
133 |
self thumbOrigin:percentOrigin
|
|
|
134 |
] ifFalse:[
|
|
|
135 |
(percentOrigin = thumbOrigin) ifTrue:[
|
|
|
136 |
self thumbHeight:percentHeight
|
|
|
137 |
] ifFalse:[
|
|
|
138 |
self thumbOrigin:percentOrigin thumbHeight:percentHeight
|
|
|
139 |
]
|
|
|
140 |
]
|
|
|
141 |
!
|
|
|
142 |
|
|
|
143 |
setThumbHeightFor:aView
|
|
|
144 |
"get contents and size info from aView and adjust thumb height"
|
|
|
145 |
|
|
|
146 |
|percent totalWidth|
|
|
|
147 |
|
|
|
148 |
totalWidth := aView widthOfContents.
|
|
|
149 |
(totalWidth = 0) ifTrue:[
|
|
|
150 |
percent := 100
|
|
|
151 |
] ifFalse:[
|
|
|
152 |
percent := (aView innerWidth) * 100 // totalWidth
|
|
|
153 |
].
|
|
|
154 |
self thumbHeight:percent
|
|
|
155 |
!
|
|
|
156 |
|
|
|
157 |
setThumbOriginFor:aView
|
|
|
158 |
"get contents and size info from aView and adjust thumb origin"
|
|
|
159 |
|
|
|
160 |
|percent totalWidth|
|
|
|
161 |
|
|
|
162 |
totalWidth := aView widthOfContents.
|
|
|
163 |
(totalWidth = 0) ifTrue:[
|
|
|
164 |
percent := 100
|
|
|
165 |
] ifFalse:[
|
|
|
166 |
percent := (aView xOriginOfContents) * 100 // totalWidth
|
|
|
167 |
].
|
|
|
168 |
self thumbOrigin:percent
|
|
|
169 |
! !
|