vrmiguel
/
sm64pc
mirror of https://github.com/sm64pc/sm64pc.git
1
0
Fork 0
Code Issues Releases Wiki Activity

Updated imgui sdl implementation

This commit is contained in:
KiritoDv 2021-08-25 03:41:55 -05:00
parent 52b320fab1
commit 75f5761bda
2 changed files with 507 additions and 104 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

596
src/moon/libs/imgui/imgui_impl_sdl.cpp
View File

@ -1,22 +1,30 @@
// dear imgui: Platform Backend for SDL2 // dear imgui: Platform Backend for SDL2
// This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..) // This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..)
// (Info: SDL2 is a cross-platform general purpose library for handling windows, inputs, graphics context creation, etc.) // (Info: SDL2 is a cross-platform general purpose library for handling windows, inputs, graphics context creation, etc.)
// (Requires: SDL 2.0. Prefer SDL 2.0.4+ for full feature support.) // (Prefer SDL 2.0.5+ for full feature support.)
// Implemented features: // Implemented features:
// [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'. // [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
// [X] Platform: Clipboard support. // [X] Platform: Clipboard support.
// [X] Platform: Keyboard arrays indexed using SDL_SCANCODE_* codes, e.g. ImGui::IsKeyPressed(SDL_SCANCODE_SPACE). // [X] Platform: Keyboard arrays indexed using SDL_SCANCODE_* codes, e.g. ImGui::IsKeyPressed(SDL_SCANCODE_SPACE).
// [X] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'. // [X] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
// [X] Platform: Multi-viewport support (multiple windows). Enable with 'io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable'.
// Missing features: // Missing features:
// [ ] Platform: SDL2 handling of IME under Windows appears to be broken and it explicitly disable the regular Windows IME. You can restore Windows IME by compiling SDL with SDL_DISABLE_WINDOWS_IME. // [ ] Platform: SDL2 handling of IME under Windows appears to be broken and it explicitly disable the regular Windows IME. You can restore Windows IME by compiling SDL with SDL_DISABLE_WINDOWS_IME.
// [ ] Platform: Multi-viewport + Minimized windows seems to break mouse wheel events (at least under Windows).
// You can copy and use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this. // You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp. // If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs // Read online: https://github.com/ocornut/imgui/tree/master/docs
// CHANGELOG // CHANGELOG
// (minor and older changes stripped away, please see git history for details) // (minor and older changes stripped away, please see git history for details)
// 2021-XX-XX: Platform: Added support for multiple windows via the ImGuiPlatformIO interface.
// 2021-08-17: Calling io.AddFocusEvent() on SDL_WINDOWEVENT_FOCUS_GAINED/SDL_WINDOWEVENT_FOCUS_LOST.
// 2021-07-29: Inputs: MousePos is correctly reported when the host platform window is hovered but not focused (using SDL_GetMouseFocus() + SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, requires SDL 2.0.5+)
// 2021-06:29: *BREAKING CHANGE* Removed 'SDL_Window* window' parameter to ImGui_ImplSDL2_NewFrame() which was unnecessary.
// 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
// 2021-03-22: Rework global mouse pos availability check listing supported platforms explicitly, effectively fixing mouse access on Raspberry Pi. (#2837, #3950) // 2021-03-22: Rework global mouse pos availability check listing supported platforms explicitly, effectively fixing mouse access on Raspberry Pi. (#2837, #3950)
// 2020-05-25: Misc: Report a zero display-size when window is minimized, to be consistent with other backends. // 2020-05-25: Misc: Report a zero display-size when window is minimized, to be consistent with other backends.
// 2020-02-20: Inputs: Fixed mapping for ImGuiKey_KeyPadEnter (using SDL_SCANCODE_KP_ENTER instead of SDL_SCANCODE_RETURN2). // 2020-02-20: Inputs: Fixed mapping for ImGuiKey_KeyPadEnter (using SDL_SCANCODE_KP_ENTER instead of SDL_SCANCODE_RETURN2).
@ -54,29 +62,64 @@
using namespace std; using namespace std;
// SDL // SDL
#include <SDL2/SDL.h> // (the multi-viewports feature requires SDL features supported from SDL 2.0.4+. SDL 2.0.5+ is highly recommended)
#include <SDL2/SDL_syswm.h> #include <SDL.h>
#include <SDL_syswm.h>
#if defined(__APPLE__) #if defined(__APPLE__)
#include "TargetConditionals.h" #include "TargetConditionals.h"
#endif #endif
#define SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE SDL_VERSION_ATLEAST(2,0,4) #if SDL_VERSION_ATLEAST(2,0,4) && !defined(__EMSCRIPTEN__) && !defined(__ANDROID__) && !(defined(__APPLE__) && TARGET_OS_IOS)
#define SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE 1
#else
#define SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE 0
#endif
#define SDL_HAS_MOUSE_FOCUS_CLICKTHROUGH SDL_VERSION_ATLEAST(2,0,5)
#define SDL_HAS_WINDOW_ALPHA SDL_VERSION_ATLEAST(2,0,5)
#define SDL_HAS_ALWAYS_ON_TOP SDL_VERSION_ATLEAST(2,0,5)
#define SDL_HAS_USABLE_DISPLAY_BOUNDS SDL_VERSION_ATLEAST(2,0,5)
#define SDL_HAS_PER_MONITOR_DPI SDL_VERSION_ATLEAST(2,0,4)
#define SDL_HAS_VULKAN SDL_VERSION_ATLEAST(2,0,6) #define SDL_HAS_VULKAN SDL_VERSION_ATLEAST(2,0,6)
#if !SDL_HAS_VULKAN
static const Uint32 SDL_WINDOW_VULKAN = 0x10000000;
#endif
// Data // SDL Data
static SDL_Window* g_Window = NULL; struct ImGui_ImplSDL2_Data
static Uint64 g_Time = 0; {
static bool g_MousePressed[3] = { false, false, false }; SDL_Window* Window;
static SDL_Cursor* g_MouseCursors[ImGuiMouseCursor_COUNT] = {}; Uint64 Time;
static char* g_ClipboardTextData = NULL; bool MousePressed[3];
static bool g_MouseCanUseGlobalState = true; SDL_Cursor* MouseCursors[ImGuiMouseCursor_COUNT];
char* ClipboardTextData;
bool MouseCanUseGlobalState;
bool UseVulkan;
ImGui_ImplSDL2_Data() { memset(this, 0, sizeof(*this)); }
};
// Backend data stored in io.BackendPlatformUserData to allow support for multiple Dear ImGui contexts
// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
// FIXME: multi-context support is not well tested and probably dysfunctional in this backend.
// FIXME: some shared resources (mouse cursor shape, gamepad) are mishandled when using multi-context.
static ImGui_ImplSDL2_Data* ImGui_ImplSDL2_GetBackendData()
{
return ImGui::GetCurrentContext() ? (ImGui_ImplSDL2_Data*)ImGui::GetIO().BackendPlatformUserData : NULL;
}
// Forward Declarations
static void ImGui_ImplSDL2_UpdateMonitors();
static void ImGui_ImplSDL2_InitPlatformInterface(SDL_Window* window, void* sdl_gl_context);
static void ImGui_ImplSDL2_ShutdownPlatformInterface();
// Functions
static const char* ImGui_ImplSDL2_GetClipboardText(void*) static const char* ImGui_ImplSDL2_GetClipboardText(void*)
{ {
if (g_ClipboardTextData) ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
SDL_free(g_ClipboardTextData); if (bd->ClipboardTextData)
g_ClipboardTextData = SDL_GetClipboardText(); SDL_free(bd->ClipboardTextData);
return g_ClipboardTextData; bd->ClipboardTextData = SDL_GetClipboardText();
return bd->ClipboardTextData;
} }
static void ImGui_ImplSDL2_SetClipboardText(void*, const char* text) static void ImGui_ImplSDL2_SetClipboardText(void*, const char* text)
@ -92,6 +135,8 @@ static void ImGui_ImplSDL2_SetClipboardText(void*, const char* text)
bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event) bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
{ {
ImGuiIO& io = ImGui::GetIO(); ImGuiIO& io = ImGui::GetIO();
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
switch (event->type) switch (event->type)
{ {
case SDL_MOUSEWHEEL: case SDL_MOUSEWHEEL:
@ -104,9 +149,9 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
} }
case SDL_MOUSEBUTTONDOWN: case SDL_MOUSEBUTTONDOWN:
{ {
if (event->button.button == SDL_BUTTON_LEFT) g_MousePressed[0] = true; if (event->button.button == SDL_BUTTON_LEFT) { bd->MousePressed[0] = true; }
if (event->button.button == SDL_BUTTON_RIGHT) g_MousePressed[1] = true; if (event->button.button == SDL_BUTTON_RIGHT) { bd->MousePressed[1] = true; }
if (event->button.button == SDL_BUTTON_MIDDLE) g_MousePressed[2] = true; if (event->button.button == SDL_BUTTON_MIDDLE) { bd->MousePressed[2] = true; }
return true; return true;
} }
case SDL_TEXTINPUT: case SDL_TEXTINPUT:
@ -130,19 +175,56 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
#endif #endif
return true; return true;
} }
// Multi-viewport support
case SDL_WINDOWEVENT:
Uint8 window_event = event->window.event;
if (window_event == SDL_WINDOWEVENT_CLOSE || window_event == SDL_WINDOWEVENT_MOVED || window_event == SDL_WINDOWEVENT_RESIZED || window_event == SDL_WINDOWEVENT_FOCUS_GAINED || window_event == SDL_WINDOWEVENT_FOCUS_LOST)
if (ImGuiViewport* viewport = ImGui::FindViewportByPlatformHandle((void*)SDL_GetWindowFromID(event->window.windowID)))
{
if (window_event == SDL_WINDOWEVENT_CLOSE)
viewport->PlatformRequestClose = true;
if (window_event == SDL_WINDOWEVENT_MOVED)
viewport->PlatformRequestMove = true;
if (window_event == SDL_WINDOWEVENT_RESIZED)
viewport->PlatformRequestResize = true;
if (window_event == SDL_WINDOWEVENT_FOCUS_GAINED)
io.AddFocusEvent(true);
else if (window_event == SDL_WINDOWEVENT_FOCUS_LOST)
io.AddFocusEvent(false);
return true;
}
break;
} }
return false; return false;
} }
static bool ImGui_ImplSDL2_Init(SDL_Window* window) static bool ImGui_ImplSDL2_Init(SDL_Window* window, void* sdl_gl_context)
{ {
g_Window = window; ImGuiIO& io = ImGui::GetIO();
IM_ASSERT(io.BackendPlatformUserData == NULL && "Already initialized a platform backend!");
// Check and store if we are on a SDL backend that supports global mouse position
// ("wayland" and "rpi" don't support it, but we chose to use a white-list instead of a black-list)
bool mouse_can_use_global_state = false;
#if SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE
const char* sdl_backend = SDL_GetCurrentVideoDriver();
const char* global_mouse_whitelist[] = { "windows", "cocoa", "x11", "DIVE", "VMAN" };
for (int n = 0; n < IM_ARRAYSIZE(global_mouse_whitelist); n++)
if (strncmp(sdl_backend, global_mouse_whitelist[n], strlen(global_mouse_whitelist[n])) == 0)
mouse_can_use_global_state = true;
#endif
// Setup backend capabilities flags // Setup backend capabilities flags
ImGuiIO& io = ImGui::GetIO(); ImGui_ImplSDL2_Data* bd = IM_NEW(ImGui_ImplSDL2_Data)();
io.BackendPlatformUserData = (void*)bd;
io.BackendPlatformName = "imgui_impl_sdl";
io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors; // We can honor GetMouseCursor() values (optional) io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors; // We can honor GetMouseCursor() values (optional)
io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos; // We can honor io.WantSetMousePos requests (optional, rarely used) io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos; // We can honor io.WantSetMousePos requests (optional, rarely used)
io.BackendPlatformName = "imgui_impl_sdl"; if (mouse_can_use_global_state)
io.BackendFlags |= ImGuiBackendFlags_PlatformHasViewports; // We can create multi-viewports on the Platform side (optional)
bd->Window = window;
bd->MouseCanUseGlobalState = mouse_can_use_global_state;
// Keyboard mapping. Dear ImGui will use those indices to peek into the io.KeysDown[] array. // Keyboard mapping. Dear ImGui will use those indices to peek into the io.KeysDown[] array.
io.KeyMap[ImGuiKey_Tab] = SDL_SCANCODE_TAB; io.KeyMap[ImGuiKey_Tab] = SDL_SCANCODE_TAB;
@ -173,41 +255,49 @@ static bool ImGui_ImplSDL2_Init(SDL_Window* window)
io.ClipboardUserData = NULL; io.ClipboardUserData = NULL;
// Load mouse cursors // Load mouse cursors
g_MouseCursors[ImGuiMouseCursor_Arrow] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW); bd->MouseCursors[ImGuiMouseCursor_Arrow] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
g_MouseCursors[ImGuiMouseCursor_TextInput] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_IBEAM); bd->MouseCursors[ImGuiMouseCursor_TextInput] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_IBEAM);
g_MouseCursors[ImGuiMouseCursor_ResizeAll] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEALL); bd->MouseCursors[ImGuiMouseCursor_ResizeAll] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEALL);
g_MouseCursors[ImGuiMouseCursor_ResizeNS] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENS); bd->MouseCursors[ImGuiMouseCursor_ResizeNS] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENS);
g_MouseCursors[ImGuiMouseCursor_ResizeEW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEWE); bd->MouseCursors[ImGuiMouseCursor_ResizeEW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEWE);
g_MouseCursors[ImGuiMouseCursor_ResizeNESW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENESW); bd->MouseCursors[ImGuiMouseCursor_ResizeNESW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENESW);
g_MouseCursors[ImGuiMouseCursor_ResizeNWSE] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENWSE); bd->MouseCursors[ImGuiMouseCursor_ResizeNWSE] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENWSE);
g_MouseCursors[ImGuiMouseCursor_Hand] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_HAND); bd->MouseCursors[ImGuiMouseCursor_Hand] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_HAND);
g_MouseCursors[ImGuiMouseCursor_NotAllowed] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NO); bd->MouseCursors[ImGuiMouseCursor_NotAllowed] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NO);
// Check and store if we are on a SDL backend that supports global mouse position
// ("wayland" and "rpi" don't support it, but we chose to use a white-list instead of a black-list)
const char* sdl_backend = SDL_GetCurrentVideoDriver();
const char* global_mouse_whitelist[] = { "windows", "cocoa", "x11", "DIVE", "VMAN" };
g_MouseCanUseGlobalState = false;
for (int n = 0; n < IM_ARRAYSIZE(global_mouse_whitelist); n++)
if (strncmp(sdl_backend, global_mouse_whitelist[n], strlen(global_mouse_whitelist[n])) == 0)
g_MouseCanUseGlobalState = true;
// Our mouse update function expect PlatformHandle to be filled for the main viewport
ImGuiViewport* main_viewport = ImGui::GetMainViewport();
main_viewport->PlatformHandle = (void*)window;
#ifdef _WIN32 #ifdef _WIN32
SDL_SysWMinfo wmInfo; SDL_SysWMinfo info;
SDL_VERSION(&wmInfo.version); SDL_VERSION(&info.version);
SDL_GetWindowWMInfo(window, &wmInfo); if (SDL_GetWindowWMInfo(window, &info))
io.ImeWindowHandle = wmInfo.info.win.window; main_viewport->PlatformHandleRaw = info.info.win.window;
#else
(void)window;
#endif #endif
// Set SDL hint to receive mouse click events on window focus, otherwise SDL doesn't emit the event.
// Without this, when clicking to gain focus, our widgets wouldn't activate even though they showed as hovered.
// (This is unfortunately a global SDL setting, so enabling it might have a side-effect on your application.
// It is unlikely to make a difference, but if your app absolutely needs to ignore the initial on-focus click:
// you can ignore SDL_MOUSEBUTTONDOWN events coming right after a SDL_WINDOWEVENT_FOCUS_GAINED)
#if SDL_HAS_MOUSE_FOCUS_CLICKTHROUGH
SDL_SetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, "1");
#endif
// Update monitors
ImGui_ImplSDL2_UpdateMonitors();
// We need SDL_CaptureMouse(), SDL_GetGlobalMouseState() from SDL 2.0.4+ to support multiple viewports.
// We left the call to ImGui_ImplSDL2_InitPlatformInterface() outside of #ifdef to avoid unused-function warnings.
if ((io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable) && (io.BackendFlags & ImGuiBackendFlags_PlatformHasViewports))
ImGui_ImplSDL2_InitPlatformInterface(window, sdl_gl_context);
return true; return true;
} }
bool ImGui_ImplSDL2_InitForOpenGL(SDL_Window* window, void* sdl_gl_context) bool ImGui_ImplSDL2_InitForOpenGL(SDL_Window* window, void* sdl_gl_context)
{ {
(void)sdl_gl_context; // Viewport branch will need this. return ImGui_ImplSDL2_Init(window, sdl_gl_context);
return ImGui_ImplSDL2_Init(window);
} }
bool ImGui_ImplSDL2_InitForVulkan(SDL_Window* window) bool ImGui_ImplSDL2_InitForVulkan(SDL_Window* window)
@ -215,7 +305,11 @@ bool ImGui_ImplSDL2_InitForVulkan(SDL_Window* window)
#if !SDL_HAS_VULKAN #if !SDL_HAS_VULKAN
IM_ASSERT(0 && "Unsupported"); IM_ASSERT(0 && "Unsupported");
#endif #endif
return ImGui_ImplSDL2_Init(window); if (!ImGui_ImplSDL2_Init(window, NULL))
return false;
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
bd->UseVulkan = true;
return true;
} }
bool ImGui_ImplSDL2_InitForD3D(SDL_Window* window) bool ImGui_ImplSDL2_InitForD3D(SDL_Window* window)
@ -223,72 +317,103 @@ bool ImGui_ImplSDL2_InitForD3D(SDL_Window* window)
#if !defined(_WIN32) #if !defined(_WIN32)
IM_ASSERT(0 && "Unsupported"); IM_ASSERT(0 && "Unsupported");
#endif #endif
return ImGui_ImplSDL2_Init(window); return ImGui_ImplSDL2_Init(window, NULL);
} }
bool ImGui_ImplSDL2_InitForMetal(SDL_Window* window) bool ImGui_ImplSDL2_InitForMetal(SDL_Window* window)
{ {
return ImGui_ImplSDL2_Init(window); return ImGui_ImplSDL2_Init(window, NULL);
} }
void ImGui_ImplSDL2_Shutdown() void ImGui_ImplSDL2_Shutdown()
{ {
g_Window = NULL; ImGuiIO& io = ImGui::GetIO();
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
// Destroy last known clipboard data ImGui_ImplSDL2_ShutdownPlatformInterface();
if (g_ClipboardTextData)
SDL_free(g_ClipboardTextData);
g_ClipboardTextData = NULL;
// Destroy SDL mouse cursors if (bd->ClipboardTextData)
SDL_free(bd->ClipboardTextData);
for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++) for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)
SDL_FreeCursor(g_MouseCursors[cursor_n]); SDL_FreeCursor(bd->MouseCursors[cursor_n]);
memset(g_MouseCursors, 0, sizeof(g_MouseCursors));
io.BackendPlatformName = NULL;
io.BackendPlatformUserData = NULL;
IM_DELETE(bd);
} }
// This code is incredibly messy because some of the functions we need for full viewport support are not available in SDL < 2.0.4.
static void ImGui_ImplSDL2_UpdateMousePosAndButtons() static void ImGui_ImplSDL2_UpdateMousePosAndButtons()
{ {
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
ImGuiIO& io = ImGui::GetIO(); ImGuiIO& io = ImGui::GetIO();
// Set OS mouse position if requested (rarely used, only when ImGuiConfigFlags_NavEnableSetMousePos is enabled by user) ImVec2 mouse_pos_prev = io.MousePos;
if (io.WantSetMousePos)
SDL_WarpMouseInWindow(g_Window, (int)io.MousePos.x, (int)io.MousePos.y);
else
io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX); io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
io.MouseHoveredViewport = 0;
int mx, my; // Update mouse buttons
Uint32 mouse_buttons = MoonInternal::Moon_GetMouseState(&mx, &my); int mouse_x_local, mouse_y_local;
io.MouseDown[0] = g_MousePressed[0] || (mouse_buttons & SDL_BUTTON(SDL_BUTTON_LEFT)) != 0; // If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame. Uint32 mouse_buttons = MoonInternal::Moon_GetMouseState(&mouse_x_local, &mouse_y_local);
io.MouseDown[1] = g_MousePressed[1] || (mouse_buttons & SDL_BUTTON(SDL_BUTTON_RIGHT)) != 0; io.MouseDown[0] = bd->MousePressed[0] || (mouse_buttons & SDL_BUTTON(SDL_BUTTON_LEFT)) != 0; // If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame.
io.MouseDown[2] = g_MousePressed[2] || (mouse_buttons & SDL_BUTTON(SDL_BUTTON_MIDDLE)) != 0; io.MouseDown[1] = bd->MousePressed[1] || (mouse_buttons & SDL_BUTTON(SDL_BUTTON_RIGHT)) != 0;
g_MousePressed[0] = g_MousePressed[1] = g_MousePressed[2] = false; io.MouseDown[2] = bd->MousePressed[2] || (mouse_buttons & SDL_BUTTON(SDL_BUTTON_MIDDLE)) != 0;
bd->MousePressed[0] = bd->MousePressed[1] = bd->MousePressed[2] = false;
#if SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE && !defined(__EMSCRIPTEN__) && !defined(__ANDROID__) && !(defined(__APPLE__) && TARGET_OS_IOS) && !defined(TARGET_SWITCH) // Obtain focused and hovered window. We forward mouse input when focused or when hovered (and no other window is capturing)
#if SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE && !defined(TARGET_SWITCH)
SDL_Window* focused_window = SDL_GetKeyboardFocus(); SDL_Window* focused_window = SDL_GetKeyboardFocus();
if (g_Window == focused_window) SDL_Window* hovered_window = SDL_HAS_MOUSE_FOCUS_CLICKTHROUGH ? SDL_GetMouseFocus() : NULL; // This is better but is only reliably useful with SDL 2.0.5+ and SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH.
SDL_Window* mouse_window = NULL;
if (hovered_window && (bd->Window == hovered_window || ImGui::FindViewportByPlatformHandle((void*)hovered_window)))
mouse_window = hovered_window;
else if (focused_window && (bd->Window == focused_window || ImGui::FindViewportByPlatformHandle((void*)focused_window)))
mouse_window = focused_window;
// SDL_CaptureMouse() let the OS know e.g. that our imgui drag outside the SDL window boundaries shouldn't e.g. trigger other operations outside
SDL_CaptureMouse(ImGui::IsAnyMouseDown() ? SDL_TRUE : SDL_FALSE);
#else
// SDL 2.0.3 and non-windowed systems: single-viewport only
SDL_Window* mouse_window = (SDL_GetWindowFlags(bd->Window) & SDL_WINDOW_INPUT_FOCUS) ? bd->Window : NULL;
#endif
if (mouse_window == NULL)
return;
// Set OS mouse position from Dear ImGui if requested (rarely used, only when ImGuiConfigFlags_NavEnableSetMousePos is enabled by user)
if (io.WantSetMousePos)
{ {
if (g_MouseCanUseGlobalState) #if SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE
{ if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
// SDL_GetMouseState() gives mouse position seemingly based on the last window entered/focused(?) SDL_WarpMouseGlobal((int)mouse_pos_prev.x, (int)mouse_pos_prev.y);
// The creation of a new windows at runtime and SDL_CaptureMouse both seems to severely mess up with that, so we retrieve that position globally. else
// Won't use this workaround on SDL backends that have no global mouse position, like Wayland or RPI #endif
int wx, wy; SDL_WarpMouseInWindow(bd->Window, (int)mouse_pos_prev.x, (int)mouse_pos_prev.y);
SDL_GetWindowPosition(focused_window, &wx, &wy);
SDL_GetGlobalMouseState(&mx, &my);
mx -= wx;
my -= wy;
}
io.MousePos = ImVec2((float)mx, (float)my);
} }
// SDL_CaptureMouse() let the OS know e.g. that our imgui drag outside the SDL window boundaries shouldn't e.g. trigger the OS window resize cursor. // Set Dear ImGui mouse position from OS position + get buttons. (this is the common behavior)
// The function is only supported from SDL 2.0.4 (released Jan 2016) if (bd->MouseCanUseGlobalState)
bool any_mouse_button_down = ImGui::IsAnyMouseDown(); {
SDL_CaptureMouse(any_mouse_button_down ? SDL_TRUE : SDL_FALSE); int mouse_x_global, mouse_y_global;
#else SDL_GetGlobalMouseState(&mouse_x_global, &mouse_y_global);
io.MousePos = ImVec2((float)mx, (float)my); if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
// cout << "ImGUI MX: " << io.MousePos.x << " MY: " << io.MousePos.y << " MS: " << mouse_buttons << endl; {
#endif // Multi-viewport mode: mouse position in OS absolute coordinates (io.MousePos is (0,0) when the mouse is on the upper-left of the primary monitor)
io.MousePos = ImVec2((float)mouse_x_global, (float)mouse_y_global);
}
else
{
// Single-viewport mode: mouse position in client window coordinates (io.MousePos is (0,0) when the mouse is on the upper-left corner of the app window)
// Unlike local position obtained earlier this will be valid when straying out of bounds.
int window_x, window_y;
SDL_GetWindowPosition(mouse_window, &window_x, &window_y);
io.MousePos = ImVec2((float)(mouse_x_global - window_x), (float)(mouse_y_global - window_y));
}
}
else
{
io.MousePos = ImVec2((float)mouse_x_local, (float)mouse_y_local);
}
} }
static void ImGui_ImplSDL2_UpdateMouseCursor() static void ImGui_ImplSDL2_UpdateMouseCursor()
@ -296,6 +421,7 @@ static void ImGui_ImplSDL2_UpdateMouseCursor()
ImGuiIO& io = ImGui::GetIO(); ImGuiIO& io = ImGui::GetIO();
if (io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange) if (io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange)
return; return;
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
ImGuiMouseCursor imgui_cursor = ImGui::GetMouseCursor(); ImGuiMouseCursor imgui_cursor = ImGui::GetMouseCursor();
if (io.MouseDrawCursor || imgui_cursor == ImGuiMouseCursor_None) if (io.MouseDrawCursor || imgui_cursor == ImGuiMouseCursor_None)
@ -306,7 +432,7 @@ static void ImGui_ImplSDL2_UpdateMouseCursor()
else else
{ {
// Show OS mouse cursor // Show OS mouse cursor
SDL_SetCursor(g_MouseCursors[imgui_cursor] ? g_MouseCursors[imgui_cursor] : g_MouseCursors[ImGuiMouseCursor_Arrow]); SDL_SetCursor(bd->MouseCursors[imgui_cursor] ? bd->MouseCursors[imgui_cursor] : bd->MouseCursors[ImGuiMouseCursor_Arrow]);
SDL_ShowCursor(SDL_TRUE); SDL_ShowCursor(SDL_TRUE);
} }
} }
@ -352,18 +478,47 @@ static void ImGui_ImplSDL2_UpdateGamepads()
#undef MAP_ANALOG #undef MAP_ANALOG
} }
void ImGui_ImplSDL2_NewFrame(SDL_Window* window) // FIXME-PLATFORM: SDL doesn't have an event to notify the application of display/monitor changes
static void ImGui_ImplSDL2_UpdateMonitors()
{ {
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
platform_io.Monitors.resize(0);
int display_count = SDL_GetNumVideoDisplays();
for (int n = 0; n < display_count; n++)
{
// Warning: the validity of monitor DPI information on Windows depends on the application DPI awareness settings, which generally needs to be set in the manifest or at runtime.
ImGuiPlatformMonitor monitor;
SDL_Rect r;
SDL_GetDisplayBounds(n, &r);
monitor.MainPos = monitor.WorkPos = ImVec2((float)r.x, (float)r.y);
monitor.MainSize = monitor.WorkSize = ImVec2((float)r.w, (float)r.h);
#if SDL_HAS_USABLE_DISPLAY_BOUNDS
SDL_GetDisplayUsableBounds(n, &r);
monitor.WorkPos = ImVec2((float)r.x, (float)r.y);
monitor.WorkSize = ImVec2((float)r.w, (float)r.h);
#endif
#if SDL_HAS_PER_MONITOR_DPI
float dpi = 0.0f;
if (!SDL_GetDisplayDPI(n, &dpi, NULL, NULL))
monitor.DpiScale = dpi / 96.0f;
#endif
platform_io.Monitors.push_back(monitor);
}
}
void ImGui_ImplSDL2_NewFrame()
{
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
IM_ASSERT(bd != NULL && "Did you call ImGui_ImplSDL2_Init()?");
ImGuiIO& io = ImGui::GetIO(); ImGuiIO& io = ImGui::GetIO();
IM_ASSERT(io.Fonts->IsBuilt() && "Font atlas not built! It is generally built by the renderer backend. Missing call to renderer _NewFrame() function? e.g. ImGui_ImplOpenGL3_NewFrame().");
// Setup display size (every frame to accommodate for window resizing) // Setup display size (every frame to accommodate for window resizing)
int w, h; int w, h;
int display_w, display_h; int display_w, display_h;
SDL_GetWindowSize(window, &w, &h); SDL_GetWindowSize(bd->Window, &w, &h);
if (SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED) if (SDL_GetWindowFlags(bd->Window) & SDL_WINDOW_MINIMIZED)
w = h = 0; w = h = 0;
SDL_GL_GetDrawableSize(window, &display_w, &display_h); SDL_GL_GetDrawableSize(bd->Window, &display_w, &display_h);
io.DisplaySize = ImVec2((float)w, (float)h); io.DisplaySize = ImVec2((float)w, (float)h);
if (w > 0 && h > 0) if (w > 0 && h > 0)
io.DisplayFramebufferScale = ImVec2((float)display_w / w, (float)display_h / h); io.DisplayFramebufferScale = ImVec2((float)display_w / w, (float)display_h / h);
@ -371,8 +526,8 @@ void ImGui_ImplSDL2_NewFrame(SDL_Window* window)
// Setup time step (we don't use SDL_GetTicks() because it is using millisecond resolution) // Setup time step (we don't use SDL_GetTicks() because it is using millisecond resolution)
static Uint64 frequency = SDL_GetPerformanceFrequency(); static Uint64 frequency = SDL_GetPerformanceFrequency();
Uint64 current_time = SDL_GetPerformanceCounter(); Uint64 current_time = SDL_GetPerformanceCounter();
io.DeltaTime = g_Time > 0 ? (float)((double)(current_time - g_Time) / frequency) : (float)(1.0f / 60.0f); io.DeltaTime = bd->Time > 0 ? (float)((double)(current_time - bd->Time) / frequency) : (float)(1.0f / 60.0f);
g_Time = current_time; bd->Time = current_time;
ImGui_ImplSDL2_UpdateMousePosAndButtons(); ImGui_ImplSDL2_UpdateMousePosAndButtons();
ImGui_ImplSDL2_UpdateMouseCursor(); ImGui_ImplSDL2_UpdateMouseCursor();
@ -380,3 +535,244 @@ void ImGui_ImplSDL2_NewFrame(SDL_Window* window)
// Update game controllers (if enabled and available) // Update game controllers (if enabled and available)
ImGui_ImplSDL2_UpdateGamepads(); ImGui_ImplSDL2_UpdateGamepads();
} }
//--------------------------------------------------------------------------------------------------------
// MULTI-VIEWPORT / PLATFORM INTERFACE SUPPORT
// This is an _advanced_ and _optional_ feature, allowing the backend to create and handle multiple viewports simultaneously.
// If you are new to dear imgui or creating a new binding for dear imgui, it is recommended that you completely ignore this section first..
//--------------------------------------------------------------------------------------------------------
// Helper structure we store in the void* RenderUserData field of each ImGuiViewport to easily retrieve our backend data.
struct ImGui_ImplSDL2_ViewportData
{
SDL_Window* Window;
Uint32 WindowID;
bool WindowOwned;
SDL_GLContext GLContext;
ImGui_ImplSDL2_ViewportData() { Window = NULL; WindowID = 0; WindowOwned = false; GLContext = NULL; }
~ImGui_ImplSDL2_ViewportData() { IM_ASSERT(Window == NULL && GLContext == NULL); }
};
static void ImGui_ImplSDL2_CreateWindow(ImGuiViewport* viewport)
{
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
ImGui_ImplSDL2_ViewportData* vd = IM_NEW(ImGui_ImplSDL2_ViewportData)();
viewport->PlatformUserData = vd;
ImGuiViewport* main_viewport = ImGui::GetMainViewport();
ImGui_ImplSDL2_ViewportData* main_viewport_data = (ImGui_ImplSDL2_ViewportData*)main_viewport->PlatformUserData;
// Share GL resources with main context
bool use_opengl = (main_viewport_data->GLContext != NULL);
SDL_GLContext backup_context = NULL;
if (use_opengl)
{
backup_context = SDL_GL_GetCurrentContext();
SDL_GL_SetAttribute(SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 1);
SDL_GL_MakeCurrent(main_viewport_data->Window, main_viewport_data->GLContext);
}
Uint32 sdl_flags = 0;
sdl_flags |= use_opengl ? SDL_WINDOW_OPENGL : (bd->UseVulkan ? SDL_WINDOW_VULKAN : 0);
sdl_flags |= SDL_GetWindowFlags(bd->Window) & SDL_WINDOW_ALLOW_HIGHDPI;
sdl_flags |= SDL_WINDOW_HIDDEN;
sdl_flags |= (viewport->Flags & ImGuiViewportFlags_NoDecoration) ? SDL_WINDOW_BORDERLESS : 0;
sdl_flags |= (viewport->Flags & ImGuiViewportFlags_NoDecoration) ? 0 : SDL_WINDOW_RESIZABLE;
#if !defined(_WIN32)
// See SDL hack in ImGui_ImplSDL2_ShowWindow().
sdl_flags |= (viewport->Flags & ImGuiViewportFlags_NoTaskBarIcon) ? SDL_WINDOW_SKIP_TASKBAR : 0;
#endif
#if SDL_HAS_ALWAYS_ON_TOP
sdl_flags |= (viewport->Flags & ImGuiViewportFlags_TopMost) ? SDL_WINDOW_ALWAYS_ON_TOP : 0;
#endif
vd->Window = SDL_CreateWindow("No Title Yet", (int)viewport->Pos.x, (int)viewport->Pos.y, (int)viewport->Size.x, (int)viewport->Size.y, sdl_flags);
vd->WindowOwned = true;
if (use_opengl)
{
vd->GLContext = SDL_GL_CreateContext(vd->Window);
SDL_GL_SetSwapInterval(0);
}
if (use_opengl && backup_context)
SDL_GL_MakeCurrent(vd->Window, backup_context);
viewport->PlatformHandle = (void*)vd->Window;
#if defined(_WIN32)
SDL_SysWMinfo info;
SDL_VERSION(&info.version);
if (SDL_GetWindowWMInfo(vd->Window, &info))
viewport->PlatformHandleRaw = info.info.win.window;
#endif
}
static void ImGui_ImplSDL2_DestroyWindow(ImGuiViewport* viewport)
{
if (ImGui_ImplSDL2_ViewportData* vd = (ImGui_ImplSDL2_ViewportData*)viewport->PlatformUserData)
{
if (vd->GLContext && vd->WindowOwned)
SDL_GL_DeleteContext(vd->GLContext);
if (vd->Window && vd->WindowOwned)
SDL_DestroyWindow(vd->Window);
vd->GLContext = NULL;
vd->Window = NULL;
IM_DELETE(vd);
}
viewport->PlatformUserData = viewport->PlatformHandle = NULL;
}
static void ImGui_ImplSDL2_ShowWindow(ImGuiViewport* viewport)
{
ImGui_ImplSDL2_ViewportData* vd = (ImGui_ImplSDL2_ViewportData*)viewport->PlatformUserData;
#if defined(_WIN32)
HWND hwnd = (HWND)viewport->PlatformHandleRaw;
// SDL hack: Hide icon from task bar
// Note: SDL 2.0.6+ has a SDL_WINDOW_SKIP_TASKBAR flag which is supported under Windows but the way it create the window breaks our seamless transition.
if (viewport->Flags & ImGuiViewportFlags_NoTaskBarIcon)
{
LONG ex_style = ::GetWindowLong(hwnd, GWL_EXSTYLE);
ex_style &= ~WS_EX_APPWINDOW;
ex_style |= WS_EX_TOOLWINDOW;
::SetWindowLong(hwnd, GWL_EXSTYLE, ex_style);
}
// SDL hack: SDL always activate/focus windows :/
if (viewport->Flags & ImGuiViewportFlags_NoFocusOnAppearing)
{
::ShowWindow(hwnd, SW_SHOWNA);
return;
}
#endif
SDL_ShowWindow(vd->Window);
}
static ImVec2 ImGui_ImplSDL2_GetWindowPos(ImGuiViewport* viewport)
{
ImGui_ImplSDL2_ViewportData* vd = (ImGui_ImplSDL2_ViewportData*)viewport->PlatformUserData;
int x = 0, y = 0;
SDL_GetWindowPosition(vd->Window, &x, &y);
return ImVec2((float)x, (float)y);
}
static void ImGui_ImplSDL2_SetWindowPos(ImGuiViewport* viewport, ImVec2 pos)
{
ImGui_ImplSDL2_ViewportData* vd = (ImGui_ImplSDL2_ViewportData*)viewport->PlatformUserData;
SDL_SetWindowPosition(vd->Window, (int)pos.x, (int)pos.y);
}
static ImVec2 ImGui_ImplSDL2_GetWindowSize(ImGuiViewport* viewport)
{
ImGui_ImplSDL2_ViewportData* vd = (ImGui_ImplSDL2_ViewportData*)viewport->PlatformUserData;
int w = 0, h = 0;
SDL_GetWindowSize(vd->Window, &w, &h);
return ImVec2((float)w, (float)h);
}
static void ImGui_ImplSDL2_SetWindowSize(ImGuiViewport* viewport, ImVec2 size)
{
ImGui_ImplSDL2_ViewportData* vd = (ImGui_ImplSDL2_ViewportData*)viewport->PlatformUserData;
SDL_SetWindowSize(vd->Window, (int)size.x, (int)size.y);
}
static void ImGui_ImplSDL2_SetWindowTitle(ImGuiViewport* viewport, const char* title)
{
ImGui_ImplSDL2_ViewportData* vd = (ImGui_ImplSDL2_ViewportData*)viewport->PlatformUserData;
SDL_SetWindowTitle(vd->Window, title);
}
#if SDL_HAS_WINDOW_ALPHA
static void ImGui_ImplSDL2_SetWindowAlpha(ImGuiViewport* viewport, float alpha)
{
ImGui_ImplSDL2_ViewportData* vd = (ImGui_ImplSDL2_ViewportData*)viewport->PlatformUserData;
SDL_SetWindowOpacity(vd->Window, alpha);
}
#endif
static void ImGui_ImplSDL2_SetWindowFocus(ImGuiViewport* viewport)
{
ImGui_ImplSDL2_ViewportData* vd = (ImGui_ImplSDL2_ViewportData*)viewport->PlatformUserData;
SDL_RaiseWindow(vd->Window);
}
static bool ImGui_ImplSDL2_GetWindowFocus(ImGuiViewport* viewport)
{
ImGui_ImplSDL2_ViewportData* vd = (ImGui_ImplSDL2_ViewportData*)viewport->PlatformUserData;
return (SDL_GetWindowFlags(vd->Window) & SDL_WINDOW_INPUT_FOCUS) != 0;
}
static bool ImGui_ImplSDL2_GetWindowMinimized(ImGuiViewport* viewport)
{
ImGui_ImplSDL2_ViewportData* vd = (ImGui_ImplSDL2_ViewportData*)viewport->PlatformUserData;
return (SDL_GetWindowFlags(vd->Window) & SDL_WINDOW_MINIMIZED) != 0;
}
static void ImGui_ImplSDL2_RenderWindow(ImGuiViewport* viewport, void*)
{
ImGui_ImplSDL2_ViewportData* vd = (ImGui_ImplSDL2_ViewportData*)viewport->PlatformUserData;
if (vd->GLContext)
SDL_GL_MakeCurrent(vd->Window, vd->GLContext);
}
static void ImGui_ImplSDL2_SwapBuffers(ImGuiViewport* viewport, void*)
{
ImGui_ImplSDL2_ViewportData* vd = (ImGui_ImplSDL2_ViewportData*)viewport->PlatformUserData;
if (vd->GLContext)
{
SDL_GL_MakeCurrent(vd->Window, vd->GLContext);
SDL_GL_SwapWindow(vd->Window);
}
}
// Vulkan support (the Vulkan renderer needs to call a platform-side support function to create the surface)
// SDL is graceful enough to _not_ need <vulkan/vulkan.h> so we can safely include this.
#if SDL_HAS_VULKAN
#include <SDL_vulkan.h>
static int ImGui_ImplSDL2_CreateVkSurface(ImGuiViewport* viewport, ImU64 vk_instance, const void* vk_allocator, ImU64* out_vk_surface)
{
ImGui_ImplSDL2_ViewportData* vd = (ImGui_ImplSDL2_ViewportData*)viewport->PlatformUserData;
(void)vk_allocator;
SDL_bool ret = SDL_Vulkan_CreateSurface(vd->Window, (VkInstance)vk_instance, (VkSurfaceKHR*)out_vk_surface);
return ret ? 0 : 1; // ret ? VK_SUCCESS : VK_NOT_READY
}
#endif // SDL_HAS_VULKAN
static void ImGui_ImplSDL2_InitPlatformInterface(SDL_Window* window, void* sdl_gl_context)
{
// Register platform interface (will be coupled with a renderer interface)
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
platform_io.Platform_CreateWindow = ImGui_ImplSDL2_CreateWindow;
platform_io.Platform_DestroyWindow = ImGui_ImplSDL2_DestroyWindow;
platform_io.Platform_ShowWindow = ImGui_ImplSDL2_ShowWindow;
platform_io.Platform_SetWindowPos = ImGui_ImplSDL2_SetWindowPos;
platform_io.Platform_GetWindowPos = ImGui_ImplSDL2_GetWindowPos;
platform_io.Platform_SetWindowSize = ImGui_ImplSDL2_SetWindowSize;
platform_io.Platform_GetWindowSize = ImGui_ImplSDL2_GetWindowSize;
platform_io.Platform_SetWindowFocus = ImGui_ImplSDL2_SetWindowFocus;
platform_io.Platform_GetWindowFocus = ImGui_ImplSDL2_GetWindowFocus;
platform_io.Platform_GetWindowMinimized = ImGui_ImplSDL2_GetWindowMinimized;
platform_io.Platform_SetWindowTitle = ImGui_ImplSDL2_SetWindowTitle;
platform_io.Platform_RenderWindow = ImGui_ImplSDL2_RenderWindow;
platform_io.Platform_SwapBuffers = ImGui_ImplSDL2_SwapBuffers;
#if SDL_HAS_WINDOW_ALPHA
platform_io.Platform_SetWindowAlpha = ImGui_ImplSDL2_SetWindowAlpha;
#endif
#if SDL_HAS_VULKAN
platform_io.Platform_CreateVkSurface = ImGui_ImplSDL2_CreateVkSurface;
#endif
// Register main window handle (which is owned by the main application, not by us)
// This is mostly for simplicity and consistency, so that our code (e.g. mouse handling etc.) can use same logic for main and secondary viewports.
ImGuiViewport* main_viewport = ImGui::GetMainViewport();
ImGui_ImplSDL2_ViewportData* vd = IM_NEW(ImGui_ImplSDL2_ViewportData)();
vd->Window = window;
vd->WindowID = SDL_GetWindowID(window);
vd->WindowOwned = false;
vd->GLContext = sdl_gl_context;
main_viewport->PlatformUserData = vd;
main_viewport->PlatformHandle = vd->Window;
}
static void ImGui_ImplSDL2_ShutdownPlatformInterface()
{
}

11
src/moon/libs/imgui/imgui_impl_sdl.h
View File

@ -7,10 +7,13 @@
// [X] Platform: Clipboard support. // [X] Platform: Clipboard support.
// [X] Platform: Keyboard arrays indexed using SDL_SCANCODE_* codes, e.g. ImGui::IsKeyPressed(SDL_SCANCODE_SPACE). // [X] Platform: Keyboard arrays indexed using SDL_SCANCODE_* codes, e.g. ImGui::IsKeyPressed(SDL_SCANCODE_SPACE).
// [X] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'. // [X] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
// [X] Platform: Multi-viewport support (multiple windows). Enable with 'io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable'.
// Missing features: // Missing features:
// [ ] Platform: SDL2 handling of IME under Windows appears to be broken and it explicitly disable the regular Windows IME. You can restore Windows IME by compiling SDL with SDL_DISABLE_WINDOWS_IME. // [ ] Platform: SDL2 handling of IME under Windows appears to be broken and it explicitly disable the regular Windows IME. You can restore Windows IME by compiling SDL with SDL_DISABLE_WINDOWS_IME.
// [ ] Platform: Multi-viewport + Minimized windows seems to break mouse wheel events (at least under Windows).
// You can copy and use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this. // You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp. // If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs // Read online: https://github.com/ocornut/imgui/tree/master/docs
@ -25,5 +28,9 @@ IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForVulkan(SDL_Window* window);
IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForD3D(SDL_Window* window); IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForD3D(SDL_Window* window);
IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForMetal(SDL_Window* window); IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForMetal(SDL_Window* window);
IMGUI_IMPL_API void ImGui_ImplSDL2_Shutdown(); IMGUI_IMPL_API void ImGui_ImplSDL2_Shutdown();
IMGUI_IMPL_API void ImGui_ImplSDL2_NewFrame(SDL_Window* window); IMGUI_IMPL_API void ImGui_ImplSDL2_NewFrame();
IMGUI_IMPL_API bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event); IMGUI_IMPL_API bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event);
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
static inline void ImGui_ImplSDL2_NewFrame(SDL_Window*) { ImGui_ImplSDL2_NewFrame(); } // 1.84: removed unnecessary parameter
#endif