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fix(key),test: simplify the input analysis code

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This commit is contained in:
Raphael 'kena' Poss
2022-10-21 17:00:39 +02:00
committed by Christian Muehlhaeuser
parent c0cc6aa1fb
commit d9c675138c
5 changed files with 828 additions and 511 deletions
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141
mouse.go
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@@ -1,15 +1,15 @@
package tea
import (
"bytes"
"errors"
)
// MouseMsg contains information about a mouse event and is sent to a program's
// MouseMsg contains information about a mouse event and are sent to a programs
// update function when mouse activity occurs. Note that the mouse must first
// be enabled in order for the mouse events to be received.
type MouseMsg MouseEvent
// String returns a string representation of a mouse event.
func (m MouseMsg) String() string {
return MouseEvent(m).String()
}
// MouseEvent represents a mouse event, which could be a click, a scroll wheel
// movement, a cursor movement, or a combination.
type MouseEvent struct {
@@ -66,84 +66,67 @@ var mouseEventTypes = map[MouseEventType]string{
// ESC [M Cb Cx Cy
//
// See: http://www.xfree86.org/current/ctlseqs.html#Mouse%20Tracking
func parseX10MouseEvents(buf []byte) ([]MouseEvent, error) {
var r []MouseEvent
func parseX10MouseEvent(buf []byte) MouseEvent {
v := buf[3:6]
var m MouseEvent
const byteOffset = 32
e := v[0] - byteOffset
seq := []byte("\x1b[M")
if !bytes.Contains(buf, seq) {
return r, errors.New("not an X10 mouse event")
}
const (
bitShift = 0b0000_0100
bitAlt = 0b0000_1000
bitCtrl = 0b0001_0000
bitMotion = 0b0010_0000
bitWheel = 0b0100_0000
for _, v := range bytes.Split(buf, seq) {
if len(v) == 0 {
continue
bitsMask = 0b0000_0011
bitsLeft = 0b0000_0000
bitsMiddle = 0b0000_0001
bitsRight = 0b0000_0010
bitsRelease = 0b0000_0011
bitsWheelUp = 0b0000_0000
bitsWheelDown = 0b0000_0001
)
if e&bitWheel != 0 {
// Check the low two bits.
switch e & bitsMask {
case bitsWheelUp:
m.Type = MouseWheelUp
case bitsWheelDown:
m.Type = MouseWheelDown
}
if len(v) != 3 {
return r, errors.New("not an X10 mouse event")
}
var m MouseEvent
const byteOffset = 32
e := v[0] - byteOffset
const (
bitShift = 0b0000_0100
bitAlt = 0b0000_1000
bitCtrl = 0b0001_0000
bitMotion = 0b0010_0000
bitWheel = 0b0100_0000
bitsMask = 0b0000_0011
bitsLeft = 0b0000_0000
bitsMiddle = 0b0000_0001
bitsRight = 0b0000_0010
bitsRelease = 0b0000_0011
bitsWheelUp = 0b0000_0000
bitsWheelDown = 0b0000_0001
)
if e&bitWheel != 0 {
// Check the low two bits.
switch e & bitsMask {
case bitsWheelUp:
m.Type = MouseWheelUp
case bitsWheelDown:
m.Type = MouseWheelDown
}
} else {
// Check the low two bits.
// We do not separate clicking and dragging.
switch e & bitsMask {
case bitsLeft:
m.Type = MouseLeft
case bitsMiddle:
m.Type = MouseMiddle
case bitsRight:
m.Type = MouseRight
case bitsRelease:
if e&bitMotion != 0 {
m.Type = MouseMotion
} else {
m.Type = MouseRelease
}
} else {
// Check the low two bits.
// We do not separate clicking and dragging.
switch e & bitsMask {
case bitsLeft:
m.Type = MouseLeft
case bitsMiddle:
m.Type = MouseMiddle
case bitsRight:
m.Type = MouseRight
case bitsRelease:
if e&bitMotion != 0 {
m.Type = MouseMotion
} else {
m.Type = MouseRelease
}
}
if e&bitAlt != 0 {
m.Alt = true
}
if e&bitCtrl != 0 {
m.Ctrl = true
}
// (1,1) is the upper left. We subtract 1 to normalize it to (0,0).
m.X = int(v[1]) - byteOffset - 1
m.Y = int(v[2]) - byteOffset - 1
r = append(r, m)
}
return r, nil
if e&bitAlt != 0 {
m.Alt = true
}
if e&bitCtrl != 0 {
m.Ctrl = true
}
// (1,1) is the upper left. We subtract 1 to normalize it to (0,0).
m.X = int(v[1]) - byteOffset - 1
m.Y = int(v[2]) - byteOffset - 1
return m
}