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term.ui: handle middle mouse button events and modifier keys (#6821)

pull/6819/head
spaceface777 2020-11-14 08:14:54 +01:00 committed by GitHub
parent 5069be04a2
commit 6b47c61fe4
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6 changed files with 94 additions and 59 deletions
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8
examples/term.ui/event_viewer.v
View File

@ -12,6 +12,12 @@ fn event(e &tui.Event, x voidptr) {
app.tui.write('V term.input event viewer (press `esc` to exit)\n\n')
app.tui.write('$e')
app.tui.write('\n\nRaw event bytes: "${e.utf8.bytes().hex()}" = ${e.utf8.bytes()}')
if e.modifiers != 0 {
app.tui.write('\nModifiers: $e.modifiers = ')
if e.modifiers & tui.ctrl != 0 { app.tui.write('ctrl. ') }
if e.modifiers & tui.shift != 0 { app.tui.write('shift ') }
if e.modifiers & tui.alt != 0 { app.tui.write('alt. ') }
}
app.tui.flush()
if e.typ == .key_down && e.code == .escape { exit(0) }
@ -28,5 +34,5 @@ app.tui = tui.init(
frame_rate: 60
)
println('V term.input event viewer (press `esc` to exit)\n\n')
println('V term.ui event viewer (press `esc` to exit)\n\n')
app.tui.run()

20
examples/term.ui/term_drawing.v
View File

@ -165,6 +165,10 @@ fn event(event &tui.Event, x voidptr) {
}
}
.mouse_scroll {
app.mouse_pos = {
x: event.x
y: event.y
}
if event.direction == .down {
app.inc_size()
} else {
@ -175,17 +179,17 @@ fn event(event &tui.Event, x voidptr) {
match event.code {
.f1, ._1 {
oevent := *event
nevent := { oevent | button: tui.MouseButton.primary, x: app.mouse_pos.x , y: app.mouse_pos.y }
nevent := { oevent | button: tui.MouseButton.left, x: app.mouse_pos.x , y: app.mouse_pos.y }
app.paint(nevent)
}
.f2, ._2 {
oevent := *event
nevent := { oevent | button: tui.MouseButton.secondary, x: app.mouse_pos.x , y: app.mouse_pos.y }
nevent := { oevent | button: tui.MouseButton.right, x: app.mouse_pos.x , y: app.mouse_pos.y }
app.paint(nevent)
}
.space {
oevent := *event
nevent := { oevent | button: tui.MouseButton.tertiary, x: app.mouse_pos.x , y: app.mouse_pos.y }
nevent := { oevent | button: tui.MouseButton.middle, x: app.mouse_pos.x , y: app.mouse_pos.y }
app.paint(nevent)
}
.j, .down {
@ -283,8 +287,8 @@ fn (mut app App) set_pixel(x_ int, y_ int, c tui.Color) {
fn (mut app App) paint(event &tui.Event) {
x_start, y_start := int(f32((event.x - 1) / 2) - app.size / 2 + 1), event.y - app.size / 2
color := match event.button {
.primary { app.primary_color }
.secondary { app.secondary_color }
.left { app.primary_color }
.right { app.secondary_color }
else { app.bg_color }
}
for x in x_start .. x_start + app.size {
@ -375,7 +379,7 @@ fn (mut app App) current_color(x int, y int) bool {
}
fn (mut app App) draw_footer() {
ww, wh := app.tui.window_width, app.tui.window_height
_, wh := app.tui.window_width, app.tui.window_height
app.tui.horizontal_separator(wh - 4)
for i, color_row in colors {
for j, color in color_row {
@ -441,9 +445,9 @@ fn (mut app App) footer_click(event &tui.Event) {
idx := footer_y * 19 - 6 + event.x / 3
if idx < 0 || idx > 56 { return }
color := colors[idx / 19][idx % 19]
if event.button == .primary {
if event.button == .left {
app.primary_color = color
} else {
} else if event.button == .right {
app.secondary_color = color
}
app.show_msg('set $event.button.str().to_lower() color idx: $idx', 1)

6
vlib/term/ui/input.v
View File

@ -123,9 +123,9 @@ pub enum Direction {
pub enum MouseButton {
unknown
primary
secondary
tertiary
left
middle
right
}
pub enum EventType {

9
vlib/term/ui/input_nix.c.v
View File

@ -9,15 +9,6 @@ pub fn init(cfg Config) &Context {
cfg: cfg,
read_buf: []byte{ cap: cfg.buffer_size }
}
ctx.save_title()
if cfg.hide_cursor {
print('\x1b[?25l')
}
if cfg.window_title != '' {
print('\x1b]0;$cfg.window_title\x07')
}
// lmao
unsafe {

64
vlib/term/ui/termios_nix.c.v
View File

@ -51,6 +51,9 @@ fn restore_terminal_state() {
}
fn (mut ctx Context) termios_setup() {
// store the current title, so restore_terminal_state can get it back
ctx.save_title()
mut termios := get_termios()
if ctx.cfg.capture_events {
@ -62,11 +65,20 @@ fn (mut ctx Context) termios_setup() {
// Set raw input mode by unsetting ICANON and ECHO
termios.c_lflag &= ~u32(C.ICANON | C.ECHO)
}
if ctx.cfg.hide_cursor {
print('\x1b[?25l')
}
if ctx.cfg.window_title != '' {
print('\x1b]0;$ctx.cfg.window_title\x07')
}
// Prevent stdin from blocking by making its read time 0
termios.c_cc[C.VTIME] = 0
termios.c_cc[C.VMIN] = 0
C.tcsetattr(C.STDIN_FILENO, C.TCSAFLUSH, &termios)
print('\x1b[?1003h\x1b[?1015h\x1b[?1006h')
print('\x1b[?1003h\x1b[?1006h')
ctx.termios = termios
@ -78,7 +90,6 @@ fn (mut ctx Context) termios_setup() {
os.signal(C.SIGCONT, fn () {
mut c := ctx_ptr
if c != 0 {
c.save_title()
c.termios_setup()
c.window_height, c.window_width = get_terminal_size()
mut event := &Event{
@ -260,31 +271,43 @@ fn escape_sequence(buf_ string) (&Event, int) {
// Mouse events
// ----------------
// TODO: rxvt uses different escape sequences for mouse events :/
// Documentation: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-Mouse-Tracking
if buf.len > 2 && buf[1] == `<` {
split := buf[2..].split(';')
if split.len < 3 { return &Event(0), 0 }
typ, x, y := split[0].int(), split[1].int(), split[2].int()
lo := typ & 0b00011
hi := typ & 0b11100
mut modifiers := u32(0)
if hi & 4 != 0 { modifiers |= shift }
if hi & 8 != 0 { modifiers |= alt }
if hi & 16 != 0 { modifiers |= ctrl }
match typ {
0, 2 {
0...31 {
last := buf[buf.len - 1]
button := if typ == 0 { MouseButton.primary } else { MouseButton.secondary }
event := if last == `M` { EventType.mouse_down } else { EventType.mouse_up }
return &Event{ typ: event, x: x, y: y, button: button, utf8: single }, end
button := if lo < 3 { MouseButton(lo + 1) } else { MouseButton.unknown }
event := if last == `m` || lo == 3 { EventType.mouse_up } else { EventType.mouse_down }
return &Event{ typ: event, x: x, y: y, button: button, modifiers: modifiers utf8: single }, end
}
32, 34 {
button := if typ == 32 { MouseButton.primary } else { MouseButton.secondary }
return &Event{ typ: .mouse_drag, x: x, y: y, button: button, utf8: single }, end
32...63 {
button, event := if lo < 3 {
MouseButton(lo + 1), EventType.mouse_drag
} else {
MouseButton.unknown, EventType.mouse_move
}
35 {
return &Event{ typ: .mouse_move, x: x, y: y, utf8: single }, end
return &Event{ typ: event, x: x, y: y, button: button, modifiers: modifiers, utf8: single }, end
}
64...95 {
direction := if typ & 1 == 0 { Direction.down } else { Direction.up }
return &Event{ typ: .mouse_scroll, x: x, y: y, direction: direction, modifiers: modifiers, utf8: single }, end
} else {
return &Event{ typ: .unknown, utf8: single }, end
}
64, 65 {
direction := if typ == 64 { Direction.down } else { Direction.up }
return &Event{ typ: .mouse_scroll, x: x, y: y, direction: direction, utf8: single }, end
} else {}
}
}
@ -320,7 +343,7 @@ fn escape_sequence(buf_ string) (&Event, int) {
else {}
}
if buf.len == 5 && buf[0] == `[` && buf[1] == `1` && buf[2] == `;` {
if buf.len == 5 && buf[0] == `[` && buf[1].is_digit() && buf[2] == `;` {
// code = KeyCode(buf[4] + 197)
modifiers = match buf[3] {
`2` { shift }
@ -333,6 +356,7 @@ fn escape_sequence(buf_ string) (&Event, int) {
else { modifiers } // probably unreachable? idk, terminal events are strange
}
if buf[1] == `1` {
code = match buf[4] {
`A` { KeyCode.up }
`B` { KeyCode.down }
@ -346,7 +370,11 @@ fn escape_sequence(buf_ string) (&Event, int) {
`S` { KeyCode.f4 }
else { code }
}
// && buf[3] >= `2` && buf[3] <= `8` && buf[4] >= `A` && buf[4] <= `D`
} else if buf[1] == `5` {
code = KeyCode.page_up
} else if buf[1] == `6` {
code = KeyCode.page_down
}
}
return &Event{ typ: .key_down, code: code, utf8: single, modifiers: modifiers }, end

6
vlib/term/ui/ui.v
View File

@ -1,5 +1,6 @@
module ui
import os
import strings
pub struct Color {
@ -18,6 +19,7 @@ pub fn (c Color) hex() string {
const (
bsu = '\x1bP=1s\x1b\\'
esu = '\x1bP=2s\x1b\\'
vno_bsu_esu = os.getenv('VNO_BSU_ESU').len>0
)
[inline]
@ -32,9 +34,13 @@ pub fn (mut ctx Context) flush() {
// TODO
} $else {
// TODO: Diff the previous frame against this one, and only render things that changed?
if vno_bsu_esu {
C.write(C.STDOUT_FILENO, ctx.print_buf.data, ctx.print_buf.len)
} else {
C.write(C.STDOUT_FILENO, bsu.str, bsu.len)
C.write(C.STDOUT_FILENO, ctx.print_buf.data, ctx.print_buf.len)
C.write(C.STDOUT_FILENO, esu.str, esu.len)
}
ctx.print_buf.clear()
}
}