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Process pointer events.

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Bartosz Taudul 2022-11-07 21:46:17 +01:00
parent 4f7fba1fed
commit e227cfe100
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GPG Key ID: B7FE2008B7575DF3
1 changed files with 111 additions and 15 deletions
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126
profiler/src/BackendWayland.cpp
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@ -5,6 +5,7 @@
#include "imgui/imgui_impl_opengl3_loader.h"
#include <chrono>
#include <linux/input-event-codes.h>
#include <stdio.h>
#include <string.h>
#include <wayland-client.h>
@ -30,11 +31,120 @@ static EGLSurface s_eglSurf;
static struct xdg_surface* s_xdgSurf;
static struct xdg_toplevel* s_toplevel;
static struct wl_seat* s_seat;
static struct wl_pointer* s_pointer;
static bool s_running = true;
static int s_w, s_h;
static uint64_t s_time;
static wl_fixed_t s_wheelAxisX, s_wheelAxisY;
static bool s_wheel;
static void PointerEnter( void*, struct wl_pointer* pointer, uint32_t serial, struct wl_surface* surf, wl_fixed_t sx, wl_fixed_t sy )
{
ImGuiIO& io = ImGui::GetIO();
io.AddMousePosEvent( wl_fixed_to_double( sx ), wl_fixed_to_double( sy ) );
}
static void PointerLeave( void*, struct wl_pointer* pointer, uint32_t serial, struct wl_surface* surf )
{
ImGuiIO& io = ImGui::GetIO();
io.AddMousePosEvent( -FLT_MAX, -FLT_MAX );
}
static void PointerMotion( void*, struct wl_pointer* pointer, uint32_t time, wl_fixed_t sx, wl_fixed_t sy )
{
ImGuiIO& io = ImGui::GetIO();
io.AddMousePosEvent( wl_fixed_to_double( sx ), wl_fixed_to_double( sy ) );
}
static void PointerButton( void*, struct wl_pointer* pointer, uint32_t serial, uint32_t time, uint32_t button, uint32_t state )
{
int b;
switch( button )
{
case BTN_LEFT: b = 0; break;
case BTN_MIDDLE: b = 1; break;
case BTN_RIGHT: b = 2; break;
default: return;
}
ImGuiIO& io = ImGui::GetIO();
io.AddMouseButtonEvent( b, state == WL_POINTER_BUTTON_STATE_PRESSED );
}
static void PointerAxis( void*, struct wl_pointer* pointer, uint32_t time, uint32_t axis, wl_fixed_t value )
{
s_wheel = true;
if( axis == WL_POINTER_AXIS_HORIZONTAL_SCROLL )
{
s_wheelAxisX += value;
}
else
{
s_wheelAxisY += value;
}
}
static void PointerAxisSource( void*, struct wl_pointer* pointer, uint32_t source )
{
}
static void PointerAxisStop( void*, struct wl_pointer* pointer, uint32_t time, uint32_t axis )
{
}
static void PointerAxisDiscrete( void*, struct wl_pointer* pointer, uint32_t axis, int32_t type )
{
}
static void PointerFrame( void*, struct wl_pointer* pointer )
{
if( s_wheel )
{
s_wheel = false;
ImGuiIO& io = ImGui::GetIO();
io.AddMouseWheelEvent( wl_fixed_to_double( s_wheelAxisX ), wl_fixed_to_double( s_wheelAxisY ) );
s_wheelAxisX = s_wheelAxisY = 0;
}
}
constexpr struct wl_pointer_listener pointerListener = {
.enter = PointerEnter,
.leave = PointerLeave,
.motion = PointerMotion,
.button = PointerButton,
.axis = PointerAxis,
.frame = PointerFrame,
.axis_source = PointerAxisSource,
.axis_stop = PointerAxisStop,
.axis_discrete = PointerAxisDiscrete
};
static void SeatCapabilities( void*, struct wl_seat* seat, uint32_t caps )
{
const bool hasPointer = caps & WL_SEAT_CAPABILITY_POINTER;
if( hasPointer && !s_pointer )
{
s_pointer = wl_seat_get_pointer( s_seat );
wl_pointer_add_listener( s_pointer, &pointerListener, nullptr );
}
else if( !hasPointer && s_pointer )
{
wl_pointer_release( s_pointer );
s_pointer = nullptr;
}
}
static void SeatName( void*, struct wl_seat* seat, const char* name )
{
}
constexpr struct wl_seat_listener seatListener = {
.capabilities = SeatCapabilities,
.name = SeatName
};
static void WmPing( void*, struct xdg_wm_base* shell, uint32_t serial )
{
@ -46,21 +156,6 @@ constexpr struct xdg_wm_base_listener wmListener = {
};
static void SeatCapabilities( void*, struct wl_seat* seat, uint32_t caps )
{
}
static void SeatName( void*, struct wl_seat* seat, const char* name )
{
}
constexpr struct wl_seat_listener seatListener = {
.capabilities = SeatCapabilities,
.name = SeatName
};
static void RegistryGlobalCb( void*, struct wl_registry* reg, uint32_t name, const char* interface, uint32_t version )
{
if( strcmp( interface, wl_compositor_interface.name ) == 0 )
@ -195,6 +290,7 @@ Backend::Backend( const char* title, std::function<void()> redraw, RunQueue* mai
Backend::~Backend()
{
if( s_pointer ) wl_pointer_destroy( s_pointer );
eglMakeCurrent( s_eglDpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT );
eglDestroySurface( s_eglDpy, s_eglSurf );
eglDestroyContext( s_eglDpy, s_eglCtx );