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dont deadlock while receiving events

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This commit is contained in:
Raphael Robatsch 2021-10-25 19:02:35 +02:00
commit 7298730969
7 changed files with 134 additions and 80 deletions
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114
src/main.cpp
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@ -24,8 +24,8 @@
struct Monitor {
uint32_t name;
wl_output *wlOutput;
znet_tapesoftware_dwl_wm_monitor_v1 *dwlMonitor;
wl_unique_ptr<wl_output> wlOutput;
wl_unique_ptr<znet_tapesoftware_dwl_wm_monitor_v1> dwlMonitor;
std::optional<Bar> bar;
};
@ -42,8 +42,8 @@ wl_shm *shm;
zwlr_layer_shell_v1 *wlrLayerShell;
znet_tapesoftware_dwl_wm_v1 *dwlWm;
std::vector<QString> tagNames;
static bool ready;
static std::vector<Monitor> monitors;
static std::optional<Bar> bar;
static std::string statusFifoName;
static int statusFifoFd {-1};
static int statusFifoWriter {-1};
@ -57,7 +57,7 @@ static const struct xdg_wm_base_listener xdgWmBaseListener = {
}
};
struct PointerState {
struct SeatState {
wl_pointer *pointer;
wl_surface *cursorSurface;
wl_cursor_image *cursorImage;
@ -65,33 +65,40 @@ struct PointerState {
int x, y;
bool leftButtonClick;
};
static PointerState pointerState;
static SeatState seatState;
static Bar* barFromSurface(const wl_surface *surface)
{
auto fbar = std::find_if(begin(monitors), end(monitors), [surface](const Monitor &mon) {
return mon.bar && mon.bar->surface() == surface;
});
return fbar != end(monitors) && fbar->bar ? &*fbar->bar : nullptr;
}
static const struct wl_pointer_listener pointerListener = {
.enter = [](void*, wl_pointer *pointer, uint32_t serial,
wl_surface*, wl_fixed_t x, wl_fixed_t y)
wl_surface *surface, wl_fixed_t x, wl_fixed_t y)
{
pointerState.focusedBar = &bar.value();
wl_pointer_set_cursor(pointer, serial, pointerState.cursorSurface,
pointerState.cursorImage->hotspot_x, pointerState.cursorImage->hotspot_y);
seatState.focusedBar = barFromSurface(surface);
wl_pointer_set_cursor(pointer, serial, seatState.cursorSurface,
seatState.cursorImage->hotspot_x, seatState.cursorImage->hotspot_y);
},
.leave = [](void*, wl_pointer*, uint32_t serial, wl_surface*) {
pointerState.focusedBar = nullptr;
seatState.focusedBar = nullptr;
},
.motion = [](void*, wl_pointer*, uint32_t, wl_fixed_t x, wl_fixed_t y) {
pointerState.x = wl_fixed_to_int(x);
pointerState.y = wl_fixed_to_int(y);
seatState.x = wl_fixed_to_int(x);
seatState.y = wl_fixed_to_int(y);
},
.button = [](void*, wl_pointer*, uint32_t, uint32_t, uint32_t button, uint32_t pressed) {
if (button == BTN_LEFT) {
pointerState.leftButtonClick = pressed == WL_POINTER_BUTTON_STATE_PRESSED;
seatState.leftButtonClick = pressed == WL_POINTER_BUTTON_STATE_PRESSED;
}
},
.axis = [](void*, wl_pointer*, uint32_t, uint32_t, wl_fixed_t) { },
.frame = [](void*, wl_pointer*) {
if (!pointerState.focusedBar) return;
if (pointerState.leftButtonClick) {
pointerState.leftButtonClick = false;
pointerState.focusedBar->click(pointerState.x, pointerState.y);
if (!seatState.focusedBar) return;
if (seatState.leftButtonClick) {
seatState.leftButtonClick = false;
seatState.focusedBar->click(seatState.x, seatState.y);
}
},
.axis_source = [](void*, wl_pointer*, uint32_t) { },
@ -103,16 +110,16 @@ static wl_seat *seat;
static const struct wl_seat_listener seatListener = {
[](void*, wl_seat*, uint32_t cap)
{
if (!pointerState.pointer && WL_SEAT_CAPABILITY_POINTER) {
if (!seatState.pointer && WL_SEAT_CAPABILITY_POINTER) {
auto cursorTheme = wl_cursor_theme_load(NULL, 24, shm);
auto cursorImage = wl_cursor_theme_get_cursor(cursorTheme, "left_ptr")->images[0];
pointerState.cursorImage = cursorImage;
pointerState.cursorSurface = wl_compositor_create_surface(compositor);
wl_surface_attach(pointerState.cursorSurface,
seatState.cursorImage = cursorImage;
seatState.cursorSurface = wl_compositor_create_surface(compositor);
wl_surface_attach(seatState.cursorSurface,
wl_cursor_image_get_buffer(cursorImage), 0, 0);
wl_surface_commit(pointerState.cursorSurface);
pointerState.pointer = wl_seat_get_pointer(seat);
wl_pointer_add_listener(pointerState.pointer, &pointerListener, nullptr);
wl_surface_commit(seatState.cursorSurface);
seatState.pointer = wl_seat_get_pointer(seat);
wl_pointer_add_listener(seatState.pointer, &pointerListener, nullptr);
}
},
[](void*, wl_seat*, const char *name) { }
@ -125,21 +132,26 @@ static const struct znet_tapesoftware_dwl_wm_v1_listener dwlWmListener = {
};
static const struct znet_tapesoftware_dwl_wm_monitor_v1_listener dwlWmMonitorListener {
.tag = [](void*, znet_tapesoftware_dwl_wm_monitor_v1*, int tag, int active, int numClients) {
printf("tag %s: active=%d, num_clients=%d\n", qPrintable(tagNames[tag]), active, numClients);
.tag = [](void*, znet_tapesoftware_dwl_wm_monitor_v1*, int tag, int active, int numClients, int urgent) {
printf("tag %s: active=%d, num_clients=%d, urgent=%d\n", qPrintable(tagNames[tag]), active, numClients, urgent);
},
.frame = [](void *mv, znet_tapesoftware_dwl_wm_monitor_v1*) {
auto mon = static_cast<Monitor*>(mv);
if (!mon->bar) {
mon->bar.emplace(mon->wlOutput.get());
}
}
};
static void setupOutput(Monitor &monitor) {
monitor.dwlMonitor = znet_tapesoftware_dwl_wm_v1_get_monitor(dwlWm, monitor.wlOutput);
znet_tapesoftware_dwl_wm_monitor_v1_add_listener(monitor.dwlMonitor, &dwlWmMonitorListener, &monitor);
monitor.bar.emplace(monitor.wlOutput);
static void setupMonitor(Monitor &monitor) {
monitor.dwlMonitor.reset(znet_tapesoftware_dwl_wm_v1_get_monitor(dwlWm, monitor.wlOutput.get()));
znet_tapesoftware_dwl_wm_monitor_v1_add_listener(monitor.dwlMonitor.get(), &dwlWmMonitorListener, &monitor);
}
static void onOutput(int name, wl_output *output) {
auto& monitor = monitors.emplace_back(name, output);
if (dwlWm) {
setupOutput(monitor);
static void onOutput(uint32_t name, wl_output *output) {
auto& m = monitors.emplace_back(Monitor {name, wl_unique_ptr<wl_output> {output}});
if (ready) {
setupMonitor(m);
}
}
@ -153,10 +165,9 @@ static void onReady()
requireGlobal(dwlWm, "znet_tapesoftware_dwl_wm_v1");
setupStatusFifo();
wl_display_roundtrip(display); // roundtrip so we receive all dwl tags etc.
ready = true;
for (auto& monitor : monitors) {
auto monitor = znet_tapesoftware_dwl_wm_v1_get_monitor(dwlWm, output);
printf("created monitor %p for output %p\n", monitor, output);
bar.emplace(output);
setupMonitor(monitor);
}
}
@ -198,8 +209,10 @@ static void onStatus()
char buffer[512];
auto n = read(statusFifoFd, buffer, sizeof(buffer));
auto str = QString::fromUtf8(buffer, n);
if (bar) {
bar->setStatus(str);
for (auto &monitor : monitors) {
if (monitor.bar) {
monitor.bar->setStatus(str);
}
}
}
@ -230,13 +243,23 @@ static void registryHandleGlobal(void*, wl_registry *registry, uint32_t name, co
wl_seat_add_listener(seat, &seatListener, nullptr);
}
if (wl_output *output; reg.handle(output, wl_output_interface, 1)) {
outputs.push_back(output);
onOutput(name, output);
}
if (reg.handle(dwlWm, znet_tapesoftware_dwl_wm_v1_interface, 1)) {
znet_tapesoftware_dwl_wm_v1_add_listener(dwlWm, &dwlWmListener, nullptr);
}
}
static const struct wl_registry_listener registry_listener = { registryHandleGlobal, nullptr };
static void registryHandleRemove(void*, wl_registry *registry, uint32_t name)
{
auto it = std::find_if(begin(monitors), end(monitors), [name](const Monitor &m) { return m.name == name; });
if (it != end(monitors)) {
monitors.erase(it);
}
}
static const struct wl_registry_listener registry_listener = {
.global = registryHandleGlobal,
.global_remove = registryHandleRemove,
};
int main(int argc, char **argv)
{
@ -273,7 +296,14 @@ int main(int argc, char **argv)
QSocketNotifier displayReadNotifier(wl_display_get_fd(display), QSocketNotifier::Read);
displayReadNotifier.setEnabled(true);
QObject::connect(&displayReadNotifier, &QSocketNotifier::activated, [=]() { wl_display_dispatch(display); });
QObject::connect(&displayReadNotifier, &QSocketNotifier::activated, [=]() {
auto res = wl_display_dispatch(display);
if (res < 0) {
perror("wl_display_dispatch");
cleanup();
exit(1);
}
});
displayWriteNotifier = new QSocketNotifier(wl_display_get_fd(display), QSocketNotifier::Write);
displayWriteNotifier->setEnabled(false);
QObject::connect(displayWriteNotifier, &QSocketNotifier::activated, waylandWriteReady);