1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
//
// MCanvasScrollView.mm
// GenericCanvas
//
// Created by Alfredo Kojima on 05/6/17.
// Copyright 2005 MySQL AB. All rights reserved.
//
#import "MCanvasScrollView.h"
#import "MGenericCanvasView.h"
@implementation MCanvasScrollView
- (id)initWithFrame:(NSRect)frame
{
self= [super initWithFrame:frame];
if (self)
{
_hScroller= [[NSScroller alloc] initWithFrame:NSMakeRect(0, 0, NSWidth(frame)-[NSScroller scrollerWidth], [NSScroller scrollerWidth])];
_vScroller= [[NSScroller alloc] initWithFrame:NSMakeRect(NSMaxX(frame) - [NSScroller scrollerWidth], [NSScroller scrollerWidth],
[NSScroller scrollerWidth], NSHeight(frame))];
[self addSubview:_hScroller];
[self addSubview:_vScroller];
[_hScroller setAction:@selector(scrolled:)];
[_hScroller setTarget:self];
[_vScroller setAction:@selector(scrolled:)];
[_vScroller setTarget:self];
[_hScroller setEnabled:YES];
[_vScroller setEnabled:YES];
}
return self;
}
- (void)dealloc
{
[_hScroller release];
[_vScroller release];
[super dealloc];
}
- (void)tile
{
NSRect frame= [self frame];
NSRect contentFrame;
contentFrame= NSMakeRect(0, [NSScroller scrollerWidth],
NSWidth(frame) - [NSScroller scrollerWidth],
NSHeight(frame) - [NSScroller scrollerWidth]);
[_contentView setFrame:contentFrame];
if (_hAccessoryView)
{
NSRect accRect= [_hAccessoryView frame];
[_hAccessoryView setFrame:NSMakeRect(0, 0, NSWidth(accRect), [NSScroller scrollerWidth])];
[_hScroller setFrame:NSMakeRect(NSWidth(accRect), 0, NSWidth(frame) - NSWidth(accRect) - [NSScroller scrollerWidth], [NSScroller scrollerWidth])];
}
else
[_hScroller setFrame:NSMakeRect(0, 0, NSWidth(frame) - [NSScroller scrollerWidth], [NSScroller scrollerWidth])];
[_vScroller setFrame:NSMakeRect(NSMaxX(frame) - [NSScroller scrollerWidth], [NSScroller scrollerWidth],
[NSScroller scrollerWidth], NSHeight(frame) - [NSScroller scrollerWidth])];
}
- (void)scrolled:(id)sender
{
float line;
float page;
NSRect rect= [_contentView actualVisibleRect];
NSSize actualSize= [_contentView actualSize];
if (sender == _hScroller)
{
line = (NSWidth(rect)/20) / actualSize.width;
page = NSWidth(rect) / actualSize.width;
}
else
{
line = (NSHeight(rect)/20) / actualSize.height;
page = NSHeight(rect) / actualSize.height;
}
switch ([sender hitPart])
{
case NSScrollerDecrementPage:
[sender setFloatValue:MAX([sender floatValue] - page, 0.0)];
break;
case NSScrollerIncrementPage:
[sender setFloatValue:MIN([sender floatValue] + page, 1.0)];
break;
case NSScrollerDecrementLine:
[sender setFloatValue:MAX([sender floatValue] - line, 0.0)];
break;
case NSScrollerIncrementLine:
[sender setFloatValue:MIN([sender floatValue] + line, 1.0)];
break;
}
[_contentView performSelector:@selector(updateFromScrollers)];
}
- (void)reflectContentRect
{
NSSize size= [_contentView baseSize];
NSRect visible= [_contentView actualVisibleRect];
if (NSWidth(visible) >= size.width)
[_hScroller setFloatValue:0.0
knobProportion:1.0];
else
[_hScroller setFloatValue:visible.origin.x/(size.width-NSWidth(visible))
knobProportion:NSWidth(visible)/size.width];
if (NSHeight(visible) >= size.height)
[_vScroller setFloatValue:0.0
knobProportion:1.0];
else
[_vScroller setFloatValue:visible.origin.y/(size.height-NSHeight(visible))
knobProportion:NSHeight(visible)/size.height];
}
- (void)setContentCanvas:(MGenericCanvasView*)canvas
{
_contentView= canvas;
[self addSubview:canvas];
[self tile];
}
- (NSSize)contentSize
{
NSSize size= [self frame].size;
size.width-= [NSScroller scrollerWidth];
size.height-= [NSScroller scrollerWidth];
return size;
}
- (void)resizeSubviewsWithOldSize:(NSSize)oldBoundsSize
{
[self tile];
}
- (void)setHAccessory:(NSView*)view
{
[self addSubview:view];
_hAccessoryView= view;
[self tile];
}
- (NSScroller*)verticalScroller
{
return _vScroller;
}
- (NSScroller*)horizontalScroller
{
return _hScroller;
}
@end
|
