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
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
// 29 march 2014
package ui
import (
"unsafe"
"image"
)
// #cgo LDFLAGS: -lobjc -framework Foundation -framework AppKit
// #include <stdlib.h>
//// #include <HIToolbox/Events.h>
// #include "objc_darwin.h"
import "C"
func makeArea(parentWindow C.id, alternate bool, s *sysData) C.id {
area := C.makeArea()
area = makeScrollView(area)
addControl(parentWindow, area)
return area
}
func areaInScrollView(scrollview C.id) C.id {
return getScrollViewContent(scrollview)
}
//export areaView_drawRect
func areaView_drawRect(self C.id, rect C.struct_xrect) {
s := getSysData(self)
// TODO clear clip rect
// rectangles in Cocoa are origin/size, not point0/point1; if we don't watch for this, weird things will happen when scrolling
// TODO change names EVERYWHERE ELSE to match
cliprect := image.Rect(int(rect.x), int(rect.y), int(rect.x + rect.width), int(rect.y + rect.height))
max := C.frame(self)
cliprect = image.Rect(0, 0, int(max.width), int(max.height)).Intersect(cliprect)
if cliprect.Empty() { // no intersection; nothing to paint
return
}
i := s.handler.Paint(cliprect)
C.drawImage(
unsafe.Pointer(pixelData(i)), C.intptr_t(i.Rect.Dx()), C.intptr_t(i.Rect.Dy()), C.intptr_t(i.Stride),
C.intptr_t(cliprect.Min.X), C.intptr_t(cliprect.Min.Y))
}
func parseModifiers(e C.id) (m Modifiers) {
const (
_NSShiftKeyMask = 1 << 17
_NSControlKeyMask = 1 << 18
_NSAlternateKeyMask = 1 << 19
_NSCommandKeyMask = 1 << 20
)
mods := uintptr(C.modifierFlags(e))
if (mods & _NSControlKeyMask) != 0 {
m |= Ctrl
}
if (mods & _NSAlternateKeyMask) != 0 {
m |= Alt
}
if (mods & _NSShiftKeyMask) != 0 {
m |= Shift
}
if (mods & _NSCommandKeyMask) != 0 {
m |= Super
}
return m
}
// TODO pressing both buttons 1 and 3 simultaneously gets turned into button 2; see if we can turn that off for our NSView only
func areaMouseEvent(self C.id, e C.id, click bool, up bool) {
var me MouseEvent
s := getSysData(self)
xp := C.getTranslatedEventPoint(self, e)
me.Pos = image.Pt(int(xp.x), int(xp.y))
// for the most part, Cocoa won't geenerate an event outside the Area... except when dragging outside the Area, so check for this
max := C.frame(self)
if !me.Pos.In(image.Rect(0, 0, int(max.width), int(max.height))) {
return
}
me.Modifiers = parseModifiers(e)
which := uint(C.buttonNumber(e)) + 1
if which == 3 { // swap middle and right button numbers
which = 2
} else if which == 2 {
which = 3
}
if click && up {
me.Up = which
} else if click {
me.Down = which
me.Count = uint(C.clickCount(e))
} else {
which = 0 // reset for Held processing below
}
// the docs do say don't use this for tracking (mouseMoved:) since it returns the state now, and mouse move events work by tracking, but as far as I can tell dragging the mouse over the inactive window does not generate an event on Mac OS X, so :/ (tracking doesn't touch dragging anyway except during mouseEntered: and mouseExited:, which we don't handle, and the only other tracking message, cursorChanged:, we also don't handle (yet...? need to figure out if this is how to set custom cursors or not), so)
held := C.pressedMouseButtons()
if which != 1 && (held & 1) != 0 { // button 1
me.Held = append(me.Held, 1)
}
if which != 2 && (held & 4) != 0 { // button 2; mind the swap
me.Held = append(me.Held, 2)
}
if which != 3 && (held & 2) != 0 { // button 3
me.Held = append(me.Held, 3)
}
held >>= 3
for i := uint(4); held != 0; i++ {
if which != i && (held & 1) != 0 {
me.Held = append(me.Held, i)
}
held >>= 1
}
repaint := s.handler.Mouse(me)
if repaint {
C.display(self)
}
}
//export areaView_mouseMoved_mouseDragged
func areaView_mouseMoved_mouseDragged(self C.id, e C.id) {
// for moving, this is handled by the tracking rect stuff above
// for dragging, if multiple buttons are held, only one of their xxxMouseDragged: messages will be sent, so this is OK to do
areaMouseEvent(self, e, false, false)
}
//export areaView_mouseDown
func areaView_mouseDown(self C.id, e C.id) {
areaMouseEvent(self, e, true, false)
}
//export areaView_mouseUp
func areaView_mouseUp(self C.id, e C.id) {
areaMouseEvent(self, e, true, true)
}
func sendKeyEvent(self C.id, e C.id, ke KeyEvent) bool {
s := getSysData(self)
handled, repaint := s.handler.Key(ke)
if repaint {
C.display(self)
}
return handled
}
func areaKeyEvent(self C.id, e C.id, up bool) bool {
var ke KeyEvent
keyCode := uintptr(C.keyCode(e))
ke, ok := fromKeycode(keyCode)
if !ok {
// no such key; modifiers by themselves are handled by -[self flagsChanged:]
return false
}
// either ke.Key or ke.ExtKey will be set at this point
ke.Modifiers = parseModifiers(e)
ke.Up = up
return sendKeyEvent(self, e, ke)
}
//export areaView_keyDown
func areaView_keyDown(self C.id, e C.id) C.BOOL {
return toBOOL(areaKeyEvent(self, e, false))
}
//export areaView_keyUp
func areaView_keyUp(self C.id, e C.id) C.BOOL {
return toBOOL(areaKeyEvent(self, e, true))
}
//export areaView_flagsChanged
func areaView_flagsChanged(self C.id, e C.id) C.BOOL {
var ke KeyEvent
// Mac OS X sends this event on both key up and key down.
// Fortunately -[e keyCode] IS valid here, so we can simply map from key code to Modifiers, get the value of [e modifierFlags], the respective bit is set or not — that will give us the up/down state
keyCode := uintptr(C.keyCode(e))
mod, ok := keycodeModifiers[keyCode] // comma-ok form to avoid adding entries
if !ok { // unknown modifier; ignore
return C.NO
}
ke.Modifiers = parseModifiers(e)
ke.Up = (ke.Modifiers & mod) == 0
return toBOOL(sendKeyEvent(self, e, ke))
}
|
