mirror of
https://github.com/Detanup01/gbe_fork.git
synced 2024-11-24 19:55:34 +08:00
339 lines
14 KiB
C++
339 lines
14 KiB
C++
// dear imgui: Platform Binding for Windows (standard windows API for 32 and 64 bits applications)
|
|
// This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..)
|
|
|
|
// Implemented features:
|
|
// [?] Platform: Clipboard support
|
|
// [?] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
|
|
// [?] Platform: Keyboard arrays indexed using
|
|
// [?] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
|
|
|
|
#include "imgui.h"
|
|
#include "imgui_impl_x11.h"
|
|
|
|
#include <X11/X.h>
|
|
#include <X11/Xlib.h>
|
|
#include <X11/keysym.h>
|
|
#include <GL/glew.h>
|
|
|
|
#include <ctime>
|
|
|
|
// CHANGELOG
|
|
// (minor and older changes stripped away, please see git history for details)
|
|
// 2019-08-31: Initial X11 implementation
|
|
|
|
// X11 Data
|
|
static Display* g_Display = nullptr;
|
|
static Window g_Window = 0;
|
|
static uint64_t g_Time = 0;
|
|
static uint64_t g_TicksPerSecond = 0;
|
|
static ImGuiMouseCursor g_LastMouseCursor = ImGuiMouseCursor_COUNT;
|
|
static bool g_HasGamepad = false;
|
|
static bool g_WantUpdateHasGamepad = true;
|
|
|
|
bool GetKeyState(int keysym, char keys[32])
|
|
{
|
|
int keycode = XKeysymToKeycode(g_Display, keysym);
|
|
return keys[keycode/8] & (1<<keycode%8);
|
|
}
|
|
|
|
bool IsKeySys(int key)
|
|
{
|
|
switch(key)
|
|
{
|
|
case XK_Shift_L : case XK_Shift_R :
|
|
case XK_Control_L: case XK_Control_R :
|
|
case XK_Alt_L : case XK_Alt_R :
|
|
case XK_Super_L : case XK_Super_R :
|
|
case XK_Caps_Lock: case XK_Shift_Lock:
|
|
case XK_BackSpace: case XK_Delete :
|
|
case XK_Left : case XK_Right :
|
|
case XK_Up : case XK_Down :
|
|
case XK_Prior : case XK_Next :
|
|
case XK_Home : case XK_End :
|
|
case XK_Insert : case XK_Return :
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Functions
|
|
bool ImGui_ImplX11_Init(void *display, void *window)
|
|
{
|
|
timespec ts, tsres;
|
|
clock_getres(CLOCK_MONOTONIC_RAW, &tsres);
|
|
clock_gettime(CLOCK_MONOTONIC_RAW, &ts);
|
|
|
|
g_TicksPerSecond = 1000000000.0f / (static_cast<uint64_t>(tsres.tv_nsec) + static_cast<uint64_t>(tsres.tv_sec)*1000000000);
|
|
g_Time = static_cast<uint64_t>(ts.tv_nsec) + static_cast<uint64_t>(ts.tv_sec)*1000000000;
|
|
|
|
//if (!::QueryPerformanceFrequency((LARGE_INTEGER *)&g_TicksPerSecond))
|
|
// return false;
|
|
//if (!::QueryPerformanceCounter((LARGE_INTEGER *)&g_Time))
|
|
// return false;
|
|
|
|
// Setup back-end capabilities flags
|
|
g_Display = reinterpret_cast<Display*>(display);
|
|
g_Window = reinterpret_cast<Window>(window);
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors; // We can honor GetMouseCursor() values (optional)
|
|
io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos; // We can honor io.WantSetMousePos requests (optional, rarely used)
|
|
io.BackendPlatformName = "imgui_impl_x11";
|
|
io.ImeWindowHandle = nullptr;
|
|
|
|
// Keyboard mapping. ImGui will use those indices to peek into the io.KeysDown[] array that we will update during the application lifetime.
|
|
io.KeyMap[ImGuiKey_Tab] = XKeysymToKeycode(g_Display, XK_Tab);
|
|
io.KeyMap[ImGuiKey_LeftArrow] = XKeysymToKeycode(g_Display, XK_Left);
|
|
io.KeyMap[ImGuiKey_RightArrow] = XKeysymToKeycode(g_Display, XK_Right);
|
|
io.KeyMap[ImGuiKey_UpArrow] = XKeysymToKeycode(g_Display, XK_Up);
|
|
io.KeyMap[ImGuiKey_DownArrow] = XKeysymToKeycode(g_Display, XK_Down);
|
|
io.KeyMap[ImGuiKey_PageUp] = XKeysymToKeycode(g_Display, XK_Prior);
|
|
io.KeyMap[ImGuiKey_PageDown] = XKeysymToKeycode(g_Display, XK_Next);
|
|
io.KeyMap[ImGuiKey_Home] = XKeysymToKeycode(g_Display, XK_Home);
|
|
io.KeyMap[ImGuiKey_End] = XKeysymToKeycode(g_Display, XK_End);
|
|
io.KeyMap[ImGuiKey_Insert] = XKeysymToKeycode(g_Display, XK_Insert);
|
|
io.KeyMap[ImGuiKey_Delete] = XKeysymToKeycode(g_Display, XK_Delete);
|
|
io.KeyMap[ImGuiKey_Backspace] = XKeysymToKeycode(g_Display, XK_BackSpace);
|
|
io.KeyMap[ImGuiKey_Space] = XKeysymToKeycode(g_Display, XK_space);
|
|
io.KeyMap[ImGuiKey_Enter] = XKeysymToKeycode(g_Display, XK_Return);
|
|
io.KeyMap[ImGuiKey_Escape] = XKeysymToKeycode(g_Display, XK_Escape);
|
|
io.KeyMap[ImGuiKey_A] = XKeysymToKeycode(g_Display, XK_A);
|
|
io.KeyMap[ImGuiKey_C] = XKeysymToKeycode(g_Display, XK_C);
|
|
io.KeyMap[ImGuiKey_V] = XKeysymToKeycode(g_Display, XK_V);
|
|
io.KeyMap[ImGuiKey_X] = XKeysymToKeycode(g_Display, XK_X);
|
|
io.KeyMap[ImGuiKey_Y] = XKeysymToKeycode(g_Display, XK_Y);
|
|
io.KeyMap[ImGuiKey_Z] = XKeysymToKeycode(g_Display, XK_Z);
|
|
|
|
return true;
|
|
}
|
|
|
|
void ImGui_ImplX11_Shutdown()
|
|
{
|
|
g_Display = nullptr;
|
|
g_Window = 0;
|
|
}
|
|
|
|
static bool ImGui_ImplX11_UpdateMouseCursor()
|
|
{
|
|
/*
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
if (io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange)
|
|
return false;
|
|
|
|
ImGuiMouseCursor imgui_cursor = ImGui::GetMouseCursor();
|
|
if (imgui_cursor == ImGuiMouseCursor_None || io.MouseDrawCursor)
|
|
{
|
|
// Hide OS mouse cursor if imgui is drawing it or if it wants no cursor
|
|
::SetCursor(NULL);
|
|
}
|
|
else
|
|
{
|
|
// Show OS mouse cursor
|
|
LPTSTR win32_cursor = IDC_ARROW;
|
|
switch (imgui_cursor)
|
|
{
|
|
case ImGuiMouseCursor_Arrow: win32_cursor = IDC_ARROW; break;
|
|
case ImGuiMouseCursor_TextInput: win32_cursor = IDC_IBEAM; break;
|
|
case ImGuiMouseCursor_ResizeAll: win32_cursor = IDC_SIZEALL; break;
|
|
case ImGuiMouseCursor_ResizeEW: win32_cursor = IDC_SIZEWE; break;
|
|
case ImGuiMouseCursor_ResizeNS: win32_cursor = IDC_SIZENS; break;
|
|
case ImGuiMouseCursor_ResizeNESW: win32_cursor = IDC_SIZENESW; break;
|
|
case ImGuiMouseCursor_ResizeNWSE: win32_cursor = IDC_SIZENWSE; break;
|
|
case ImGuiMouseCursor_Hand: win32_cursor = IDC_HAND; break;
|
|
}
|
|
::SetCursor(::LoadCursor(NULL, win32_cursor));
|
|
}
|
|
*/
|
|
return true;
|
|
}
|
|
|
|
static void ImGui_ImplX11_UpdateMousePos()
|
|
{
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
|
|
// Set OS mouse position if requested (rarely used, only when ImGuiConfigFlags_NavEnableSetMousePos is enabled by user)
|
|
if (io.WantSetMousePos)
|
|
{
|
|
// POINT pos = { (int)io.MousePos.x, (int)io.MousePos.y };
|
|
// ::ClientToScreen(g_hWnd, &pos);
|
|
// ::SetCursorPos(pos.x, pos.y);
|
|
}
|
|
|
|
// Set mouse position
|
|
Window unused_window;
|
|
int rx, ry, x, y;
|
|
unsigned int mask;
|
|
|
|
XQueryPointer(g_Display, g_Window, &unused_window, &unused_window, &rx, &ry, &x, &y, &mask);
|
|
|
|
io.MousePos = ImVec2((float)x, (float)y);
|
|
}
|
|
|
|
// Gamepad navigation mapping
|
|
static void ImGui_ImplX11_UpdateGamepads()
|
|
{
|
|
/* TODO: support linux gamepad ?
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
memset(io.NavInputs, 0, sizeof(io.NavInputs));
|
|
if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0)
|
|
return;
|
|
|
|
// Calling XInputGetState() every frame on disconnected gamepads is unfortunately too slow.
|
|
// Instead we refresh gamepad availability by calling XInputGetCapabilities() _only_ after receiving WM_DEVICECHANGE.
|
|
if (g_WantUpdateHasGamepad)
|
|
{
|
|
XINPUT_CAPABILITIES caps;
|
|
g_HasGamepad = (XInputGetCapabilities(0, XINPUT_FLAG_GAMEPAD, &caps) == ERROR_SUCCESS);
|
|
g_WantUpdateHasGamepad = false;
|
|
}
|
|
|
|
XINPUT_STATE xinput_state;
|
|
io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
|
|
if (g_HasGamepad && XInputGetState(0, &xinput_state) == ERROR_SUCCESS)
|
|
{
|
|
const XINPUT_GAMEPAD& gamepad = xinput_state.Gamepad;
|
|
io.BackendFlags |= ImGuiBackendFlags_HasGamepad;
|
|
|
|
#define MAP_BUTTON(NAV_NO, BUTTON_ENUM) { io.NavInputs[NAV_NO] = (gamepad.wButtons & BUTTON_ENUM) ? 1.0f : 0.0f; }
|
|
#define MAP_ANALOG(NAV_NO, VALUE, V0, V1) { float vn = (float)(VALUE - V0) / (float)(V1 - V0); if (vn > 1.0f) vn = 1.0f; if (vn > 0.0f && io.NavInputs[NAV_NO] < vn) io.NavInputs[NAV_NO] = vn; }
|
|
MAP_BUTTON(ImGuiNavInput_Activate, XINPUT_GAMEPAD_A); // Cross / A
|
|
MAP_BUTTON(ImGuiNavInput_Cancel, XINPUT_GAMEPAD_B); // Circle / B
|
|
MAP_BUTTON(ImGuiNavInput_Menu, XINPUT_GAMEPAD_X); // Square / X
|
|
MAP_BUTTON(ImGuiNavInput_Input, XINPUT_GAMEPAD_Y); // Triangle / Y
|
|
MAP_BUTTON(ImGuiNavInput_DpadLeft, XINPUT_GAMEPAD_DPAD_LEFT); // D-Pad Left
|
|
MAP_BUTTON(ImGuiNavInput_DpadRight, XINPUT_GAMEPAD_DPAD_RIGHT); // D-Pad Right
|
|
MAP_BUTTON(ImGuiNavInput_DpadUp, XINPUT_GAMEPAD_DPAD_UP); // D-Pad Up
|
|
MAP_BUTTON(ImGuiNavInput_DpadDown, XINPUT_GAMEPAD_DPAD_DOWN); // D-Pad Down
|
|
MAP_BUTTON(ImGuiNavInput_FocusPrev, XINPUT_GAMEPAD_LEFT_SHOULDER); // L1 / LB
|
|
MAP_BUTTON(ImGuiNavInput_FocusNext, XINPUT_GAMEPAD_RIGHT_SHOULDER); // R1 / RB
|
|
MAP_BUTTON(ImGuiNavInput_TweakSlow, XINPUT_GAMEPAD_LEFT_SHOULDER); // L1 / LB
|
|
MAP_BUTTON(ImGuiNavInput_TweakFast, XINPUT_GAMEPAD_RIGHT_SHOULDER); // R1 / RB
|
|
MAP_ANALOG(ImGuiNavInput_LStickLeft, gamepad.sThumbLX, -XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, -32768);
|
|
MAP_ANALOG(ImGuiNavInput_LStickRight, gamepad.sThumbLX, +XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, +32767);
|
|
MAP_ANALOG(ImGuiNavInput_LStickUp, gamepad.sThumbLY, +XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, +32767);
|
|
MAP_ANALOG(ImGuiNavInput_LStickDown, gamepad.sThumbLY, -XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, -32767);
|
|
#undef MAP_BUTTON
|
|
#undef MAP_ANALOG
|
|
}
|
|
*/
|
|
}
|
|
|
|
void ImGui_ImplX11_NewFrame()
|
|
{
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
IM_ASSERT(io.Fonts->IsBuilt() && "Font atlas not built! It is generally built by the renderer back-end. Missing call to renderer _NewFrame() function? e.g. ImGui_ImplOpenGL3_NewFrame().");
|
|
|
|
unsigned int width, height;
|
|
Window unused_window;
|
|
int unused_int;
|
|
unsigned int unused_unsigned_int;
|
|
|
|
XGetGeometry(g_Display, (Window)g_Window, &unused_window, &unused_int, &unused_int, &width, &height, &unused_unsigned_int, &unused_unsigned_int);
|
|
|
|
io.DisplaySize.x = width;
|
|
io.DisplaySize.y = height;
|
|
|
|
timespec ts, tsres;
|
|
clock_gettime(CLOCK_MONOTONIC_RAW, &ts);
|
|
|
|
uint64_t current_time = static_cast<uint64_t>(ts.tv_nsec) + static_cast<uint64_t>(ts.tv_sec)*1000000000;
|
|
|
|
io.DeltaTime = (float)(current_time - g_Time) / g_TicksPerSecond;
|
|
g_Time = current_time;
|
|
|
|
// Read keyboard modifiers inputs
|
|
char keys[32];
|
|
XQueryKeymap(g_Display, keys);
|
|
|
|
io.KeyCtrl = GetKeyState(XK_Control_L, keys);
|
|
io.KeyShift = GetKeyState(XK_Shift_L, keys);
|
|
io.KeyAlt = GetKeyState(XK_Alt_L, keys);
|
|
io.KeySuper = false;
|
|
// io.KeysDown[], io.MousePos, io.MouseDown[], io.MouseWheel: filled by the WndProc handler below.
|
|
|
|
// Update OS mouse position
|
|
ImGui_ImplX11_UpdateMousePos();
|
|
/*
|
|
// Update OS mouse cursor with the cursor requested by imgui
|
|
ImGuiMouseCursor mouse_cursor = io.MouseDrawCursor ? ImGuiMouseCursor_None : ImGui::GetMouseCursor();
|
|
if (g_LastMouseCursor != mouse_cursor)
|
|
{
|
|
g_LastMouseCursor = mouse_cursor;
|
|
ImGui_ImplX11_UpdateMouseCursor();
|
|
}
|
|
*/
|
|
|
|
// Update game controllers (if enabled and available)
|
|
ImGui_ImplX11_UpdateGamepads();
|
|
}
|
|
|
|
// Process X11 mouse/keyboard inputs.
|
|
// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
|
|
// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
|
|
// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
|
|
// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
|
|
IMGUI_IMPL_API int ImGui_ImplX11_EventHandler(XEvent &event)
|
|
{
|
|
if (ImGui::GetCurrentContext() == NULL)
|
|
return 0;
|
|
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
switch (event.type)
|
|
{
|
|
case ButtonPress:
|
|
case ButtonRelease:
|
|
switch(event.xbutton.button)
|
|
{
|
|
case Button1:
|
|
io.MouseDown[0] = event.type == ButtonPress;
|
|
break;
|
|
|
|
case Button2:
|
|
io.MouseDown[2] = event.type == ButtonPress;
|
|
break;
|
|
|
|
case Button3:
|
|
io.MouseDown[1] = event.type == ButtonPress;
|
|
break;
|
|
|
|
case Button4: // Mouse wheel up
|
|
if( event.type == ButtonPress )
|
|
io.MouseWheel += 1;
|
|
return 0;
|
|
|
|
case Button5: // Mouse wheel down
|
|
if( event.type == ButtonPress )
|
|
io.MouseWheel -= 1;
|
|
return 0;
|
|
}
|
|
|
|
break;
|
|
|
|
case KeyPress:
|
|
{
|
|
int key = XKeycodeToKeysym(g_Display, event.xkey.keycode, event.xkey.state & ShiftMask ? 1 : 0);
|
|
if( IsKeySys(key) )
|
|
io.KeysDown[event.xkey.keycode] = true;
|
|
else
|
|
io.AddInputCharacter(key);
|
|
return 0;
|
|
}
|
|
|
|
case KeyRelease:
|
|
{
|
|
int key = XKeycodeToKeysym(g_Display, event.xkey.keycode, event.xkey.state & ShiftMask ? 1 : 0);
|
|
if( IsKeySys(key) )
|
|
io.KeysDown[event.xkey.keycode] = false;
|
|
return 0;
|
|
}
|
|
}
|
|
/*
|
|
case WM_DEVICECHANGE:
|
|
if ((UINT)wParam == DBT_DEVNODES_CHANGED)
|
|
g_WantUpdateHasGamepad = true;
|
|
return 0;
|
|
}
|
|
*/
|
|
return 0;
|
|
}
|
|
|