mirror of
https://github.com/vlang/v.git
synced 2023-08-10 21:13:21 +03:00
clipboard: use a nicer error when X11/Xlib.h is missing
This commit is contained in:
Delyan Angelov
parent
985ef52872
commit
b3a4f746a2
@ -9,102 +9,125 @@ import math
|
||||
#flag -lX11
|
||||
#flag freebsd -I/usr/local/include
|
||||
#flag freebsd -L/usr/local/lib -lX11
|
||||
#include <X11/Xlib.h>
|
||||
|
||||
#include <X11/Xlib.h> # Please install a package with the X11 development headers, for example: `apt-get install libx11-dev`
|
||||
// X11
|
||||
[typedef]
|
||||
struct C.Display
|
||||
struct C.Display {
|
||||
}
|
||||
|
||||
[typedef]
|
||||
struct C.Atom
|
||||
struct C.Atom {
|
||||
}
|
||||
|
||||
[typedef]
|
||||
struct C.Window
|
||||
struct C.Window {
|
||||
}
|
||||
|
||||
fn C.XInitThreads() int
|
||||
|
||||
fn C.XCloseDisplay(d &Display)
|
||||
|
||||
fn C.XFlush(d &Display)
|
||||
|
||||
fn C.XDestroyWindow(d &Display, w C.Window)
|
||||
|
||||
fn C.XNextEvent(d C.Display, e &XEvent)
|
||||
|
||||
fn C.XSetSelectionOwner(d &Display, a C.Atom, w C.Window, time int)
|
||||
|
||||
fn C.XGetSelectionOwner(d &Display, a C.Atom) C.Window
|
||||
|
||||
fn C.XChangeProperty(d &Display, requestor C.Window, property C.Atom, typ C.Atom, format int, mode int, data voidptr, nelements int) int
|
||||
|
||||
fn C.XSendEvent(d &Display, requestor C.Window, propogate int, mask i64, event &XEvent)
|
||||
|
||||
fn C.XInternAtom(d &Display, typ byteptr, only_if_exists int) C.Atom
|
||||
fn C.XCreateSimpleWindow(d &Display, root C.Window, x int, y int, width u32, height u32, border_width u32,
|
||||
border u64, background u64) C.Window
|
||||
|
||||
fn C.XCreateSimpleWindow(d &Display, root C.Window, x int, y int, width u32, height u32, border_width u32, border u64, background u64) C.Window
|
||||
|
||||
fn C.XOpenDisplay(name byteptr) &C.Display
|
||||
|
||||
fn C.XConvertSelection(d &Display, selection C.Atom, target C.Atom, property C.Atom, requestor Window, time int) int
|
||||
|
||||
fn C.XSync(d &Display, discard int) int
|
||||
|
||||
fn C.XGetWindowProperty(d &Display, w Window, property C.Atom, offset i64, length i64, delete int, req_type C.Atom, actual_type_return &C.Atom, actual_format_return &int, nitems &u64, bytes_after_return &u64, prop_return &byteptr) int
|
||||
|
||||
fn C.XDeleteProperty(d &Display, w Window, property C.Atom) int
|
||||
|
||||
fn C.DefaultScreen() int
|
||||
|
||||
fn C.RootWindow() voidptr
|
||||
|
||||
fn C.BlackPixel() voidptr
|
||||
|
||||
fn C.WhitePixel() voidptr
|
||||
|
||||
fn C.XFree()
|
||||
|
||||
fn todo_del(){}
|
||||
fn todo_del() {}
|
||||
|
||||
[typedef]
|
||||
struct C.XSelectionRequestEvent{
|
||||
mut:
|
||||
display &C.Display /* Display the event was read from */
|
||||
owner C.Window
|
||||
struct C.XSelectionRequestEvent {
|
||||
mut:
|
||||
display &C.Display // Display the event was read from
|
||||
owner C.Window
|
||||
requestor C.Window
|
||||
selection C.Atom
|
||||
target C.Atom
|
||||
property C.Atom
|
||||
time int
|
||||
target C.Atom
|
||||
property C.Atom
|
||||
time int
|
||||
}
|
||||
|
||||
[typedef]
|
||||
struct C.XSelectionEvent{
|
||||
mut:
|
||||
@type int
|
||||
display &C.Display /* Display the event was read from */
|
||||
struct C.XSelectionEvent {
|
||||
mut:
|
||||
@type int
|
||||
display &C.Display // Display the event was read from
|
||||
requestor C.Window
|
||||
selection C.Atom
|
||||
target C.Atom
|
||||
property C.Atom
|
||||
time int
|
||||
target C.Atom
|
||||
property C.Atom
|
||||
time int
|
||||
}
|
||||
|
||||
[typedef]
|
||||
struct C.XSelectionClearEvent{
|
||||
mut:
|
||||
window C.Window
|
||||
struct C.XSelectionClearEvent {
|
||||
mut:
|
||||
window C.Window
|
||||
selection C.Atom
|
||||
}
|
||||
|
||||
[typedef]
|
||||
struct C.XDestroyWindowEvent {
|
||||
mut:
|
||||
mut:
|
||||
window C.Window
|
||||
}
|
||||
|
||||
[typedef]
|
||||
union C.XEvent{
|
||||
mut:
|
||||
@type int
|
||||
xdestroywindow C.XDestroyWindowEvent
|
||||
xselectionclear C.XSelectionClearEvent
|
||||
union C.XEvent {
|
||||
mut:
|
||||
@type int
|
||||
xdestroywindow C.XDestroyWindowEvent
|
||||
xselectionclear C.XSelectionClearEvent
|
||||
xselectionrequest C.XSelectionRequestEvent
|
||||
xselection C.XSelectionEvent
|
||||
xselection C.XSelectionEvent
|
||||
}
|
||||
|
||||
const (
|
||||
atom_names = ["TARGETS", "CLIPBOARD", "PRIMARY", "SECONDARY", "TEXT", "UTF8_STRING", "text/plain", "text/html"]
|
||||
atom_names = ['TARGETS', 'CLIPBOARD', 'PRIMARY', 'SECONDARY', 'TEXT', 'UTF8_STRING', 'text/plain',
|
||||
'text/html',
|
||||
]
|
||||
)
|
||||
//UNSUPPORTED TYPES: MULTIPLE, INCR, TIMESTAMP, image/bmp, image/jpeg, image/tiff, image/png
|
||||
|
||||
// UNSUPPORTED TYPES: MULTIPLE, INCR, TIMESTAMP, image/bmp, image/jpeg, image/tiff, image/png
|
||||
// all the atom types we need
|
||||
// currently we only support text
|
||||
// in the future, maybe we can extend this
|
||||
// to support other mime types
|
||||
enum AtomType {
|
||||
xa_atom = 0 //value 4
|
||||
xa_string = 1 //value 31
|
||||
xa_atom = 0 // value 4
|
||||
xa_string = 1 // value 31
|
||||
targets = 2
|
||||
clipboard = 3
|
||||
primary = 4
|
||||
@ -117,21 +140,21 @@ enum AtomType {
|
||||
|
||||
pub struct Clipboard {
|
||||
display &C.Display
|
||||
mut:
|
||||
selection C.Atom //the selection atom
|
||||
window C.Window
|
||||
atoms []C.Atom
|
||||
mutex &sync.Mutex
|
||||
text string // text data sent or received
|
||||
got_text bool // used to confirm that we have got the text
|
||||
is_owner bool // to save selection owner state
|
||||
mut:
|
||||
selection C.Atom // the selection atom
|
||||
window C.Window
|
||||
atoms []C.Atom
|
||||
mutex &sync.Mutex
|
||||
text string // text data sent or received
|
||||
got_text bool // used to confirm that we have got the text
|
||||
is_owner bool // to save selection owner state
|
||||
}
|
||||
|
||||
struct Property{
|
||||
actual_type C.Atom
|
||||
struct Property {
|
||||
actual_type C.Atom
|
||||
actual_format int
|
||||
nitems u64
|
||||
data byteptr
|
||||
nitems u64
|
||||
data byteptr
|
||||
}
|
||||
|
||||
pub fn new_clipboard() &Clipboard {
|
||||
@ -142,20 +165,22 @@ pub fn new_clipboard() &Clipboard {
|
||||
// We can initialize multiple clipboard instances and use them separately
|
||||
fn new_x11_clipboard(selection AtomType) &Clipboard {
|
||||
if selection !in [.clipboard, .primary, .secondary] {
|
||||
panic("Wrong AtomType. Must be one of .primary, .secondary or .clipboard.")
|
||||
panic('Wrong AtomType. Must be one of .primary, .secondary or .clipboard.')
|
||||
}
|
||||
|
||||
//init x11 thread support
|
||||
// init x11 thread support
|
||||
status := C.XInitThreads()
|
||||
if status == 0 {
|
||||
println("WARN: this system does not support threads; clipboard will cause the program to lock.")
|
||||
println('WARN: this system does not support threads; clipboard will cause the program to lock.')
|
||||
}
|
||||
|
||||
display := new_display()
|
||||
|
||||
if display == C.NULL {
|
||||
println("ERROR: No X Server running. Clipboard cannot be used.")
|
||||
return &Clipboard{ display: 0 mutex: sync.new_mutex() }
|
||||
println('ERROR: No X Server running. Clipboard cannot be used.')
|
||||
return &Clipboard{
|
||||
display: 0
|
||||
mutex: sync.new_mutex()
|
||||
}
|
||||
}
|
||||
|
||||
mut cb := &Clipboard{
|
||||
@ -178,16 +203,16 @@ fn (cb &Clipboard) check_availability() bool {
|
||||
fn (mut cb Clipboard) free() {
|
||||
C.XDestroyWindow(cb.display, cb.window)
|
||||
cb.window = C.Window(C.None)
|
||||
//FIX ME: program hangs when closing display
|
||||
//XCloseDisplay(cb.display)
|
||||
// FIX ME: program hangs when closing display
|
||||
// XCloseDisplay(cb.display)
|
||||
}
|
||||
|
||||
fn (mut cb Clipboard) clear(){
|
||||
fn (mut cb Clipboard) clear() {
|
||||
cb.mutex.m_lock()
|
||||
C.XSetSelectionOwner(cb.display, cb.selection, C.Window(C.None), C.CurrentTime)
|
||||
C.XFlush(cb.display)
|
||||
cb.is_owner = false
|
||||
cb.text = ""
|
||||
cb.text = ''
|
||||
cb.mutex.unlock()
|
||||
}
|
||||
|
||||
@ -195,13 +220,15 @@ fn (cb &Clipboard) has_ownership() bool {
|
||||
return cb.is_owner
|
||||
}
|
||||
|
||||
fn (cb &Clipboard) take_ownership(){
|
||||
fn (cb &Clipboard) take_ownership() {
|
||||
C.XSetSelectionOwner(cb.display, cb.selection, cb.window, C.CurrentTime)
|
||||
C.XFlush(cb.display)
|
||||
}
|
||||
|
||||
pub fn (mut cb Clipboard) set_text(text string) bool {
|
||||
if cb.window == C.Window(C.None) {return false}
|
||||
if cb.window == C.Window(C.None) {
|
||||
return false
|
||||
}
|
||||
cb.mutex.m_lock()
|
||||
cb.text = text
|
||||
cb.is_owner = true
|
||||
@ -214,19 +241,24 @@ pub fn (mut cb Clipboard) set_text(text string) bool {
|
||||
}
|
||||
|
||||
fn (mut cb Clipboard) get_text() string {
|
||||
if cb.window == C.Window(C.None) {return ""}
|
||||
if cb.window == C.Window(C.None) {
|
||||
return ''
|
||||
}
|
||||
if cb.is_owner {
|
||||
return cb.text
|
||||
}
|
||||
cb.got_text = false
|
||||
|
||||
//Request a list of possible conversions, if we're pasting.
|
||||
C.XConvertSelection(cb.display, cb.selection, cb.get_atom(.targets), cb.selection, cb.window, C.CurrentTime)
|
||||
// Request a list of possible conversions, if we're pasting.
|
||||
C.XConvertSelection(cb.display, cb.selection, cb.get_atom(.targets), cb.selection,
|
||||
cb.window, C.CurrentTime)
|
||||
|
||||
//wait for the text to arrive
|
||||
// wait for the text to arrive
|
||||
mut retries := 5
|
||||
for {
|
||||
if cb.got_text || retries == 0 {break}
|
||||
if cb.got_text || retries == 0 {
|
||||
break
|
||||
}
|
||||
time.usleep(50000)
|
||||
retries--
|
||||
}
|
||||
@ -238,10 +270,12 @@ fn (mut cb Clipboard) get_text() string {
|
||||
fn (mut cb Clipboard) transmit_selection(xse &C.XSelectionEvent) bool {
|
||||
if xse.target == cb.get_atom(.targets) {
|
||||
targets := cb.get_supported_targets()
|
||||
C.XChangeProperty(xse.display, xse.requestor, xse.property, cb.get_atom(.xa_atom), 32, C.PropModeReplace, targets.data, targets.len)
|
||||
} else if cb.is_supported_target(xse.target) && cb.is_owner && cb.text != "" {
|
||||
C.XChangeProperty(xse.display, xse.requestor, xse.property, cb.get_atom(.xa_atom),
|
||||
32, C.PropModeReplace, targets.data, targets.len)
|
||||
} else if cb.is_supported_target(xse.target) && cb.is_owner && cb.text != '' {
|
||||
cb.mutex.m_lock()
|
||||
C.XChangeProperty(xse.display, xse.requestor, xse.property, xse.target, 8, C.PropModeReplace, cb.text.str, cb.text.len)
|
||||
C.XChangeProperty(xse.display, xse.requestor, xse.property, xse.target, 8, C.PropModeReplace,
|
||||
cb.text.str, cb.text.len)
|
||||
cb.mutex.unlock()
|
||||
} else {
|
||||
return false
|
||||
@ -249,34 +283,38 @@ fn (mut cb Clipboard) transmit_selection(xse &C.XSelectionEvent) bool {
|
||||
return true
|
||||
}
|
||||
|
||||
fn (mut cb Clipboard) start_listener(){
|
||||
fn (mut cb Clipboard) start_listener() {
|
||||
event := C.XEvent{}
|
||||
mut sent_request := false
|
||||
mut to_be_requested := C.Atom(0)
|
||||
for {
|
||||
C.XNextEvent(cb.display, &event)
|
||||
if unsafe { event.@type == 0 } {
|
||||
println("error")
|
||||
continue
|
||||
}
|
||||
match unsafe {event.@type} {
|
||||
if unsafe { event.@type == 0 } {
|
||||
println('error')
|
||||
continue
|
||||
}
|
||||
match unsafe { event.@type } {
|
||||
C.DestroyNotify {
|
||||
if unsafe { event.xdestroywindow.window == cb.window } {
|
||||
// we are done
|
||||
return
|
||||
return
|
||||
}
|
||||
}
|
||||
C.SelectionClear {
|
||||
if unsafe { event.xselectionclear.window == cb.window } && unsafe { event.xselectionclear.selection == cb.selection } {
|
||||
if unsafe { event.xselectionclear.window == cb.window } && unsafe { event.xselectionclear.selection ==
|
||||
cb.selection }
|
||||
{
|
||||
cb.mutex.m_lock()
|
||||
cb.is_owner = false
|
||||
cb.text = ""
|
||||
cb.text = ''
|
||||
cb.mutex.unlock()
|
||||
}
|
||||
}
|
||||
C.SelectionRequest {
|
||||
if unsafe { event.xselectionrequest.selection == cb.selection } {
|
||||
mut xsre := &C.XSelectionRequestEvent{ display: 0 }
|
||||
if unsafe { event.xselectionrequest.selection == cb.selection } {
|
||||
mut xsre := &C.XSelectionRequestEvent{
|
||||
display: 0
|
||||
}
|
||||
xsre = unsafe { &event.xselectionrequest }
|
||||
|
||||
mut xse := C.XSelectionEvent{
|
||||
@ -296,24 +334,29 @@ fn (mut cb Clipboard) start_listener(){
|
||||
}
|
||||
}
|
||||
C.SelectionNotify {
|
||||
if unsafe { event.xselection.selection == cb.selection && event.xselection.property != C.Atom(C.None) } {
|
||||
if unsafe { event.xselection.selection == cb.selection &&
|
||||
event.xselection.property != C.Atom(C.None) }
|
||||
{
|
||||
if unsafe { event.xselection.target == cb.get_atom(.targets) && !sent_request } {
|
||||
sent_request = true
|
||||
prop := read_property(cb.display, cb.window, cb.selection)
|
||||
to_be_requested = cb.pick_target(prop)
|
||||
if to_be_requested != C.Atom(0) {
|
||||
C.XConvertSelection(cb.display, cb.selection, to_be_requested, cb.selection, cb.window, C.CurrentTime)
|
||||
C.XConvertSelection(cb.display, cb.selection, to_be_requested,
|
||||
cb.selection, cb.window, C.CurrentTime)
|
||||
}
|
||||
} else if unsafe { event.xselection.target == to_be_requested } {
|
||||
sent_request = false
|
||||
to_be_requested = C.Atom(0)
|
||||
cb.mutex.m_lock()
|
||||
prop := unsafe{ read_property(event.xselection.display, event.xselection.requestor, event.xselection.property) }
|
||||
unsafe{ C.XDeleteProperty(event.xselection.display, event.xselection.requestor, event.xselection.property) }
|
||||
prop := unsafe { read_property(event.xselection.display, event.xselection.requestor,
|
||||
event.xselection.property) }
|
||||
unsafe { C.XDeleteProperty(event.xselection.display, event.xselection.requestor,
|
||||
event.xselection.property) }
|
||||
if cb.is_supported_target(prop.actual_type) {
|
||||
cb.got_text = true
|
||||
unsafe {
|
||||
cb.text = byteptr(prop.data).vstring() //TODO: return byteptr to support other mimetypes
|
||||
cb.text = byteptr(prop.data).vstring() // TODO: return byteptr to support other mimetypes
|
||||
}
|
||||
}
|
||||
cb.mutex.unlock()
|
||||
@ -326,16 +369,13 @@ fn (mut cb Clipboard) start_listener(){
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
// Helpers
|
||||
|
||||
// Initialize all the atoms we need
|
||||
fn (mut cb Clipboard) intern_atoms(){
|
||||
cb.atoms << C.Atom(4) //XA_ATOM
|
||||
cb.atoms << C.Atom(31) //XA_STRING
|
||||
for i, name in atom_names{
|
||||
only_if_exists := if i == int(AtomType.utf8_string) {1} else {0}
|
||||
fn (mut cb Clipboard) intern_atoms() {
|
||||
cb.atoms << C.Atom(4) // XA_ATOM
|
||||
cb.atoms << C.Atom(31) // XA_STRING
|
||||
for i, name in atom_names {
|
||||
only_if_exists := if i == int(AtomType.utf8_string) { 1 } else { 0 }
|
||||
cb.atoms << C.XInternAtom(cb.display, name.str, only_if_exists)
|
||||
if i == int(AtomType.utf8_string) && cb.atoms[i] == C.Atom(C.None) {
|
||||
cb.atoms[i] = cb.get_atom(.xa_string)
|
||||
@ -354,39 +394,42 @@ fn read_property(d &C.Display, w C.Window, p C.Atom) Property {
|
||||
if ret != 0 {
|
||||
C.XFree(ret)
|
||||
}
|
||||
C.XGetWindowProperty(d, w, p, 0, read_bytes, 0, C.AnyPropertyType, &actual_type, &actual_format, &nitems, &bytes_after, &ret)
|
||||
C.XGetWindowProperty(d, w, p, 0, read_bytes, 0, C.AnyPropertyType, &actual_type,
|
||||
&actual_format, &nitems, &bytes_after, &ret)
|
||||
read_bytes *= 2
|
||||
if bytes_after == 0 {break}
|
||||
if bytes_after == 0 {
|
||||
break
|
||||
}
|
||||
}
|
||||
return Property{actual_type, actual_format, nitems, ret}
|
||||
}
|
||||
|
||||
// Finds the best target given a local copy of a property.
|
||||
fn (cb &Clipboard) pick_target(prop Property) C.Atom {
|
||||
//The list of targets is a list of atoms, so it should have type XA_ATOM
|
||||
//but it may have the type TARGETS instead.
|
||||
if (prop.actual_type != cb.get_atom(.xa_atom) && prop.actual_type != cb.get_atom(.targets)) || prop.actual_format != 32
|
||||
// The list of targets is a list of atoms, so it should have type XA_ATOM
|
||||
// but it may have the type TARGETS instead.
|
||||
if (prop.actual_type != cb.get_atom(.xa_atom) &&
|
||||
prop.actual_type != cb.get_atom(.targets)) ||
|
||||
prop.actual_format != 32
|
||||
{
|
||||
//This would be really broken. Targets have to be an atom list
|
||||
//and applications should support this. Nevertheless, some
|
||||
//seem broken (MATLAB 7, for instance), so ask for STRING
|
||||
//next instead as the lowest common denominator
|
||||
// This would be really broken. Targets have to be an atom list
|
||||
// and applications should support this. Nevertheless, some
|
||||
// seem broken (MATLAB 7, for instance), so ask for STRING
|
||||
// next instead as the lowest common denominator
|
||||
return cb.get_atom(.xa_string)
|
||||
}
|
||||
else
|
||||
{
|
||||
} else {
|
||||
atom_list := &C.Atom(prop.data)
|
||||
|
||||
mut to_be_requested := C.Atom(0)
|
||||
|
||||
//This is higher than the maximum priority.
|
||||
// This is higher than the maximum priority.
|
||||
mut priority := math.max_i32
|
||||
|
||||
for i in 0..prop.nitems {
|
||||
//See if this data type is allowed and of higher priority (closer to zero)
|
||||
//than the present one.
|
||||
for i in 0 .. prop.nitems {
|
||||
// See if this data type is allowed and of higher priority (closer to zero)
|
||||
// than the present one.
|
||||
|
||||
target := unsafe{ atom_list[i] }
|
||||
target := unsafe { atom_list[i] }
|
||||
if cb.is_supported_target(target) {
|
||||
index := cb.get_target_index(target)
|
||||
if priority > index && index >= 0 {
|
||||
@ -417,7 +460,9 @@ fn (cb &Clipboard) is_supported_target(target C.Atom) bool {
|
||||
|
||||
fn (cb &Clipboard) get_target_index(target C.Atom) int {
|
||||
for i, atom in cb.get_supported_targets() {
|
||||
if atom == target {return i}
|
||||
if atom == target {
|
||||
return i
|
||||
}
|
||||
}
|
||||
return -1
|
||||
}
|
||||
@ -427,13 +472,13 @@ fn (cb &Clipboard) get_supported_targets() []C.Atom {
|
||||
}
|
||||
|
||||
fn new_atom(value int) &C.Atom {
|
||||
return unsafe {&C.Atom(value)}
|
||||
return unsafe { &C.Atom(value) }
|
||||
}
|
||||
|
||||
fn create_xwindow(display &C.Display) C.Window {
|
||||
n := C.DefaultScreen(display)
|
||||
return C.XCreateSimpleWindow(display, C.RootWindow(display, n), 0, 0, 1, 1,
|
||||
0, C.BlackPixel(display, n), C.WhitePixel(display, n))
|
||||
return C.XCreateSimpleWindow(display, C.RootWindow(display, n), 0, 0, 1, 1, 0, C.BlackPixel(display,
|
||||
n), C.WhitePixel(display, n))
|
||||
}
|
||||
|
||||
fn new_display() &C.Display {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user