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system clipboard paste for widgets #78

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296 changes: 188 additions & 108 deletions Engine/system/api/x11api.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -76,6 +76,21 @@ static Atom& _NET_WM_STATE_FULLSCREEN(){
return w;
}

static Atom& CLIPBOARD(){
static Atom w = XInternAtom( dpy, "CLIPBOARD", 0);
return w;
}

static Atom& UTF8_STRING(){
static Atom w = XInternAtom( dpy, "UTF8_STRING", 0);
return w;
}

static Atom& XSEL_DATA(){
static Atom w = XInternAtom( dpy, "XSEL_DATA", 0);
return w;
}

static bool nativeIsFullscreen(SystemApi::Window *iw) {
HWND w(iw);

Expand Down Expand Up @@ -521,129 +536,167 @@ int X11Api::implExec(SystemApi::AppCallBack &cb) {
return 0;
}

void X11Api::implProcessEvents(SystemApi::AppCallBack &cb) {
// main message loop
if(XPending(dpy)>0) {
XEvent xev={};
XNextEvent(dpy, &xev);

HWND hWnd = xev.xclient.window;
auto it = impl->findWindow(hWnd.ptr());
if(it==nullptr)
return;
Tempest::Window& cb = *it->owner;
switch( xev.type ) {
case ClientMessage: {
if(xev.xclient.data.l[0] == long(WM_DELETE_WINDOW())){
SystemApi::exit();
}
break;
}
case ConfigureNotify: {
cb.setPosition(xev.xconfigure.x, xev.xconfigure.y);
if(xev.xconfigure.width !=cb.w() || xev.xconfigure.height!=cb.h()) {
Tempest::SizeEvent e(xev.xconfigure.width, xev.xconfigure.height);
SystemApi::dispatchResize(cb,e);
}
break;
void X11Api::dispatchEvent(XEvent &xev) {
HWND hWnd = xev.xclient.window;
auto it = impl->findWindow(hWnd.ptr());
if(it==nullptr)
return;
Tempest::Window& cb = *it->owner;
switch( xev.type ) {
case ClientMessage: {
if(xev.xclient.data.l[0] == long(WM_DELETE_WINDOW())){
SystemApi::exit();
}
case PropertyNotify:{
impl->trackFullscreen(hWnd.ptr());
break;
break;
}
case ConfigureNotify: {
cb.setPosition(xev.xconfigure.x, xev.xconfigure.y);
if(xev.xconfigure.width !=cb.w() || xev.xconfigure.height!=cb.h()) {
Tempest::SizeEvent e(xev.xconfigure.width, xev.xconfigure.height);
SystemApi::dispatchResize(cb,e);
}
case MappingNotify:
XRefreshKeyboardMapping(&xev.xmapping);
break;
case ButtonPress:
case ButtonRelease: {
if(xev.xbutton.button==Button4 || xev.xbutton.button==Button5) {
int ticks = 0;
if( xev.xbutton.button == Button4 ) {
ticks = 120;
}
else if ( xev.xbutton.button == Button5 ) {
ticks = -120;
}
if(xev.type==ButtonPress) {
Tempest::MouseEvent e( xev.xbutton.x,
xev.xbutton.y,
Tempest::Event::ButtonNone,
Event::M_NoModifier,
ticks,
0,
Event::MouseWheel );
SystemApi::dispatchMouseWheel(cb, e);
}
} else {
MouseEvent e( xev.xbutton.x,
xev.xbutton.y,
toButton( xev.xbutton ),
Event::M_NoModifier,
0,
0,
xev.type==ButtonPress ? Event::MouseDown : Event::MouseUp );
if(xev.type==ButtonPress)
SystemApi::dispatchMouseDown(cb, e); else
SystemApi::dispatchMouseUp(cb, e);
break;
}
case PropertyNotify:{
impl->trackFullscreen(hWnd.ptr());
break;
}
case MappingNotify:
XRefreshKeyboardMapping(&xev.xmapping);
break;
case ButtonPress:
case ButtonRelease: {
if(xev.xbutton.button==Button4 || xev.xbutton.button==Button5) {
int ticks = 0;
if( xev.xbutton.button == Button4 ) {
ticks = 120;
}
break;
}
case MotionNotify: {
if(activeCursorChange == 1) {
// FIXME: mouse behave crazy in OpenGothic
activeCursorChange = 0;
break;
else if ( xev.xbutton.button == Button5 ) {
ticks = -120;
}
if(xev.type==ButtonPress) {
Tempest::MouseEvent e( xev.xbutton.x,
xev.xbutton.y,
Tempest::Event::ButtonNone,
Event::M_NoModifier,
ticks,
0,
Event::MouseWheel );
SystemApi::dispatchMouseWheel(cb, e);
}
MouseEvent e( xev.xmotion.x,
xev.xmotion.y,
Event::ButtonNone,
} else {
MouseEvent e( xev.xbutton.x,
xev.xbutton.y,
toButton( xev.xbutton ),
Event::M_NoModifier,
0,
0,
Event::MouseMove );
SystemApi::dispatchMouseMove(cb, e);
xev.type==ButtonPress ? Event::MouseDown : Event::MouseUp );
if(xev.type==ButtonPress)
SystemApi::dispatchMouseDown(cb, e); else
SystemApi::dispatchMouseUp(cb, e);
}
break;
}
case MotionNotify: {
if(activeCursorChange == 1) {
// FIXME: mouse behave crazy in OpenGothic
activeCursorChange = 0;
break;
}
case KeyPress:
case KeyRelease: {
KeySym ksym = XLookupKeysym(&xev.xkey,0);
XIC xic = impl->xicOf(hWnd.ptr());

char txt[64]={};
if(xic!=nullptr) {
XEvent xev2 = xev;
xev2.type = KeyPress; // HACK: Their behavior when a client passes a KeyRelease event is undefined.
Status status = {};
Xutf8LookupString(xic, &xev2.xkey, txt, sizeof(txt)-1, &ksym, &status);
if(status == XBufferOverflow) {
txt[0] = '\0';
}
// XLookupString(&xev.xkey, txt, sizeof(txt)-1, ksym, nullptr );
MouseEvent e( xev.xmotion.x,
xev.xmotion.y,
Event::ButtonNone,
Event::M_NoModifier,
0,
0,
Event::MouseMove );
SystemApi::dispatchMouseMove(cb, e);
break;
}
case KeyPress:
case KeyRelease: {
KeySym ksym = XLookupKeysym(&xev.xkey,0);
XIC xic = impl->xicOf(hWnd.ptr());

char txt[64]={};
if(xic!=nullptr) {
XEvent xev2 = xev;
xev2.type = KeyPress; // HACK: Their behavior when a client passes a KeyRelease event is undefined.
Status status = {};
Xutf8LookupString(xic, &xev2.xkey, txt, sizeof(txt)-1, &ksym, &status);
if(status == XBufferOverflow) {
txt[0] = '\0';
}
// XLookupString(&xev.xkey, txt, sizeof(txt)-1, ksym, nullptr );
}

auto u16 = TextCodec::toUtf16(txt); // TODO: remove dynamic allocation
auto key = SystemApi::translateKey(ksym);
auto u16 = TextCodec::toUtf16(txt); // TODO: remove dynamic allocation
auto key = SystemApi::translateKey(ksym);

uint32_t scan = xev.xkey.keycode;
// printf("%s\n",txt);
uint32_t scan = xev.xkey.keycode;
// printf("%s\n",txt);

Tempest::KeyEvent e(Event::KeyType(key),uint32_t(u16.size()>0 ? u16[0] : 0),Event::M_NoModifier,(xev.type==KeyPress) ? Event::KeyDown : Event::KeyUp);
if(xev.type==KeyPress)
SystemApi::dispatchKeyDown(cb,e,scan); else
SystemApi::dispatchKeyUp (cb,e,scan);
break;
}
case FocusIn: {
FocusEvent e(true, Event::UnknownReason);
SystemApi::dispatchFocus(cb, e);
break;
}
case FocusOut: {
FocusEvent e(false, Event::UnknownReason);
SystemApi::dispatchFocus(cb, e);
break;
Atom actual_type;
int actual_format;
unsigned long nitems, bytes_after;
unsigned char* data;

XGetWindowProperty(dpy, xev.xclient.window,
XSEL_DATA(), 0L, ~0L, False, AnyPropertyType,
&actual_type, &actual_format, &nitems, &bytes_after, &data);

Tempest::KeyEvent e(Event::KeyType(key),uint32_t(u16.size()>0 ? u16[0] : 0),Event::M_NoModifier,(xev.type==KeyPress) ? Event::KeyDown : Event::KeyUp);
if(xev.type==KeyPress)
SystemApi::dispatchKeyDown(cb,e,scan); else
SystemApi::dispatchKeyUp (cb,e,scan);
break;
}
case FocusIn: {
FocusEvent e(true, Event::UnknownReason);
SystemApi::dispatchFocus(cb, e);
break;
}
case FocusOut: {
FocusEvent e(false, Event::UnknownReason);
SystemApi::dispatchFocus(cb, e);
break;
}
case SelectionNotify: {
clipboard.type = SystemApi::ClipboardDataType::Unknown;
clipboard.data.clear();

if (xev.xselection.property != None) {
Atom actual_type;
int actual_format;
unsigned long nitems, bytes_after;
unsigned char* data;

XGetWindowProperty(xev.xselection.display, xev.xselection.requestor,
xev.xselection.property, 0L, ~0L, False, AnyPropertyType,
&actual_type, &actual_format, &nitems, &bytes_after, &data);

if (actual_type == UTF8_STRING() || actual_type == XA_STRING) {
size_t total_bytes = nitems * (actual_format / 8);
clipboard.type = SystemApi::ClipboardDataType::Text;
clipboard.data.assign(data,data+total_bytes);
XFree(data);
}

XDeleteProperty(dpy, xev.xselection.requestor, xev.xselection.property);
}
break;
}
}
}

void X11Api::implProcessEvents(SystemApi::AppCallBack &cb) {
// main message loop
if(XPending(dpy)>0) {
XEvent xev={};
XNextEvent(dpy, &xev);

dispatchEvent(xev);

std::this_thread::yield();
} else {
Expand All @@ -657,4 +710,31 @@ void X11Api::implProcessEvents(SystemApi::AppCallBack &cb) {
}
}

SystemApi::ClipboardData X11Api::implClipboardData(SystemApi::Window *w) {
XConvertSelection(dpy, CLIPBOARD(), UTF8_STRING(), XSEL_DATA(), HWND(w), CurrentTime);

auto end = std::chrono::high_resolution_clock::now() + std::chrono::seconds(1);

// waiting for SelectionNotify
while(true){
if(XPending(dpy)>0) {
XEvent xev={};
XNextEvent(dpy, &xev);

dispatchEvent(xev);

if (xev.type == SelectionNotify) {
break;
}
}

if(std::chrono::high_resolution_clock::now() > end) {
Log::e("X11 clipboard paste timeout");
break;
}
}

return clipboard;
}

#endif
6 changes: 6 additions & 0 deletions Engine/system/api/x11api.h
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,8 @@

#include "system/systemapi.h"

typedef union _XEvent XEvent;

namespace Tempest {

class X11Api final: SystemApi {
Expand Down Expand Up @@ -34,9 +36,13 @@ class X11Api final: SystemApi {
void implProcessEvents(AppCallBack& cb) override;
bool implIsRunning() override;

void dispatchEvent(XEvent &xev);
void alignGeometry(Window *w, Tempest::Window& owner);

std::unique_ptr<Private> impl;
SystemApi::ClipboardData clipboard;

SystemApi::ClipboardData implClipboardData(SystemApi::Window *w) override;

friend class SystemApi;
};
Expand Down
4 changes: 4 additions & 0 deletions Engine/system/systemapi.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -208,3 +208,7 @@ void SystemApi::showCursor(SystemApi::Window *w, CursorShape show) {
float SystemApi::uiScale(Window* w) {
return inst().implUiScale(w);
}

SystemApi::ClipboardData SystemApi::clipboardData(SystemApi::Window *w) {
return SystemApi::inst().implClipboardData(w);
}
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