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Platform IME: changed io.ImeSetInputScreenPosFn() to io.SetPlatformImeDataFn() API.

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Ref #2589, #2598, #3108, #3113, #3653, #4642
This commit is contained in:
ocornut 2022-01-05 13:03:48 +01:00
parent 04bc0b0bb8
commit 3a90dc3893
7 changed files with 68 additions and 26 deletions
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4
backends/imgui_impl_glfw.cpp
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@ -246,8 +246,10 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw
io.SetClipboardTextFn = ImGui_ImplGlfw_SetClipboardText;
io.GetClipboardTextFn = ImGui_ImplGlfw_GetClipboardText;
io.ClipboardUserData = bd->Window;
// Set platform dependent data in viewport
#if defined(_WIN32)
io.ImeWindowHandle = (void*)glfwGetWin32Window(bd->Window);
ImGui::GetMainViewport()->PlatformHandleRaw = (void*)glfwGetWin32Window(bd->Window);
#endif
// Create mouse cursors

3
backends/imgui_impl_sdl.cpp
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@ -230,11 +230,12 @@ static bool ImGui_ImplSDL2_Init(SDL_Window* window)
bd->MouseCursors[ImGuiMouseCursor_Hand] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_HAND);
bd->MouseCursors[ImGuiMouseCursor_NotAllowed] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NO);
// Set platform dependent data in viewport
#ifdef _WIN32
SDL_SysWMinfo info;
SDL_VERSION(&info.version);
if (SDL_GetWindowWMInfo(window, &info))
io.ImeWindowHandle = info.info.win.window;
ImGui::GetMainViewport()->PlatformHandleRaw = (void*)info.info.win.window;
#else
(void)window;
#endif

3
backends/imgui_impl_win32.cpp
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@ -122,7 +122,8 @@ bool ImGui_ImplWin32_Init(void* hwnd)
bd->Time = perf_counter;
bd->LastMouseCursor = ImGuiMouseCursor_COUNT;
io.ImeWindowHandle = hwnd;
// Set platform dependent data in viewport
ImGui::GetMainViewport()->PlatformHandleRaw = (void*)hwnd;
// Keyboard mapping. Dear ImGui will use those indices to peek into the io.KeysDown[] array that we will update during the application lifetime.
io.KeyMap[ImGuiKey_Tab] = VK_TAB;

11
docs/CHANGELOG.txt
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@ -43,6 +43,14 @@ Breaking Changes:
- ImGui::TreeAdvanceToLabelPos() -> use ImGui::SetCursorPosX(ImGui::GetCursorPosX() + ImGui::GetTreeNodeToLabelSpacing());
- ImFontAtlas::CustomRect -> use ImFontAtlasCustomRect
- ImGuiColorEditFlags_RGB/HSV/HEX -> use ImGuiColorEditFlags_DisplayRGB/HSV/Hex
- Removed io.ImeSetInputScreenPosFn() in favor of more flexible io.SetPlatformImeDataFn() for IME support.
Because this field was mostly only ever used by Dear ImGui internally, not by backends nor the vast majority
of user code, this should only affect a very small fraction for users who are already very IME-aware.
- Obsoleted 'void* io.ImeWindowHandle' in favor of writing to 'void* ImGuiViewport::PlatformHandleRaw'.
This removes an incompatibility between 'master' and 'multi-viewports' backends and toward enabling
better support for IME. Updated backends accordingly. Because the old field is set by existing backends,
we are keeping it (marked as obsolete).
Other Changes:
@ -50,6 +58,9 @@ Other Changes:
which would makes the draw operation of some backends assert (e.g. Metal with debugging). (#4857)
- Tables, ImDrawListSplitter: Fixed erroneously stripping trailing ImDrawList::AddCallback() when submitted in
last column or last channel and when there are no other drawing operation. (#4843, #4844) [@hoffstadt]
- Platform IME: changed io.ImeSetInputScreenPosFn() to io.SetPlatformImeDataFn() API,
now taking a ImGuiPlatformImeData structure which we can more easily extend in the future.
- Platform IME: moved io.ImeWindowHandle to GetMainViewport()->PlatformHandleRaw.
- Backends: OpenGL3: Fixed a buffer overflow in imgui_impl_opengl3_loader.h init (added in 1.86). (#4468, #4830) [@dymk]
It would generally not have noticeable side-effect at runtime but would be detected by runtime checkers.
- Backends: Metal: Added Apple Metal C++ API support. (#4824, #4746) [@luigifcruz]

4
docs/FAQ.md
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@ -607,8 +607,8 @@ Text input: it is up to your application to pass the right character code by cal
The applications in examples/ are doing that.
Windows: you can use the WM_CHAR or WM_UNICHAR or WM_IME_CHAR message (depending if your app is built using Unicode or MultiByte mode).
You may also use MultiByteToWideChar() or ToUnicode() to retrieve Unicode codepoints from MultiByte characters or keyboard state.
Windows: if your language is relying on an Input Method Editor (IME), you copy the HWND of your window to io.ImeWindowHandle in order for
the default implementation of io.ImeSetInputScreenPosFn() to set your Microsoft IME position correctly.
Windows: if your language is relying on an Input Method Editor (IME), you can write your HWND to ImGui::GetMainViewport()->PlatformHandleRaw
in order for the default the default implementation of io.SetPlatformImeDataFn() to set your Microsoft IME position correctly.
##### [Return to Index](#index)

44
imgui.cpp
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@ -386,6 +386,7 @@ CODE
When you are not sure about an old symbol or function name, try using the Search/Find function of your IDE to look for comments or references in all imgui files.
You can read releases logs https://github.com/ocornut/imgui/releases for more details.
- 2022/03/05 (1.87) - removed io.ImeSetInputScreenPosFn() in favor of more flexible io.SetPlatformImeDataFn(). Removed 'void* io.ImeWindowHandle' in favor of writing to 'void* ImGuiViewport::PlatformHandleRaw'.
- 2022/03/01 (1.87) - commented out redirecting functions/enums names that were marked obsolete in 1.69, 1.70, 1.71, 1.72 (March-July 2019)
- ImGui::SetNextTreeNodeOpen() -> use ImGui::SetNextItemOpen()
- ImGui::GetContentRegionAvailWidth() -> use ImGui::GetContentRegionAvail().x
@ -919,7 +920,7 @@ static void WindowSettingsHandler_WriteAll(ImGuiContext*, ImGuiSetti
// Platform Dependents default implementation for IO functions
static const char* GetClipboardTextFn_DefaultImpl(void* user_data);
static void SetClipboardTextFn_DefaultImpl(void* user_data, const char* text);
static void ImeSetInputScreenPosFn_DefaultImpl(int x, int y);
static void SetPlatformImeDataFn_DefaultImpl(ImGuiViewport* viewport, ImGuiPlatformImeData* data);
namespace ImGui
{
@ -1136,8 +1137,7 @@ ImGuiIO::ImGuiIO()
GetClipboardTextFn = GetClipboardTextFn_DefaultImpl; // Platform dependent default implementations
SetClipboardTextFn = SetClipboardTextFn_DefaultImpl;
ClipboardUserData = NULL;
ImeSetInputScreenPosFn = ImeSetInputScreenPosFn_DefaultImpl;
ImeWindowHandle = NULL;
SetPlatformImeDataFn = SetPlatformImeDataFn_DefaultImpl;
// Input (NB: we already have memset zero the entire structure!)
MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
@ -4553,9 +4553,11 @@ void ImGui::EndFrame()
ErrorCheckEndFrameSanityChecks();
// Notify OS when our Input Method Editor cursor has moved (e.g. CJK inputs using Microsoft IME)
if (g.IO.ImeSetInputScreenPosFn && (g.PlatformImeLastPos.x == FLT_MAX || ImLengthSqr(g.PlatformImeLastPos - g.PlatformImePos) > 0.0001f))
if (g.IO.SetPlatformImeDataFn && (g.PlatformImeLastPos.x == FLT_MAX || ImLengthSqr(g.PlatformImeLastPos - g.PlatformImePos) > 0.0001f))
{
g.IO.ImeSetInputScreenPosFn((int)g.PlatformImePos.x, (int)g.PlatformImePos.y);
ImGuiPlatformImeData data;
data.InputPos = g.PlatformImePos;
g.IO.SetPlatformImeDataFn(GetMainViewport(), &data);
g.PlatformImeLastPos = g.PlatformImePos;
}
@ -11500,25 +11502,31 @@ static void SetClipboardTextFn_DefaultImpl(void*, const char* text)
#pragma comment(lib, "imm32")
#endif
static void ImeSetInputScreenPosFn_DefaultImpl(int x, int y)
static void SetPlatformImeDataFn_DefaultImpl(ImGuiViewport* viewport, ImGuiPlatformImeData* data)
{
// Notify OS Input Method Editor of text input position
ImGuiIO& io = ImGui::GetIO();
if (HWND hwnd = (HWND)io.ImeWindowHandle)
if (HIMC himc = ::ImmGetContext(hwnd))
{
COMPOSITIONFORM cf;
cf.ptCurrentPos.x = x;
cf.ptCurrentPos.y = y;
cf.dwStyle = CFS_FORCE_POSITION;
::ImmSetCompositionWindow(himc, &cf);
::ImmReleaseContext(hwnd, himc);
}
HWND hwnd = (HWND)viewport->PlatformHandleRaw;
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
if (hwnd == 0)
hwnd = (HWND)ImGui::GetIO().ImeWindowHandle;
#endif
if (hwnd == 0)
return;
if (HIMC himc = ::ImmGetContext(hwnd))
{
COMPOSITIONFORM cf;
cf.ptCurrentPos.x = (LONG)data->InputPos.x;
cf.ptCurrentPos.y = (LONG)data->InputPos.y;
cf.dwStyle = CFS_FORCE_POSITION;
::ImmSetCompositionWindow(himc, &cf);
::ImmReleaseContext(hwnd, himc);
}
}
#else
static void ImeSetInputScreenPosFn_DefaultImpl(int, int) {}
static void SetPlatformImeDataFn_De(int, int) {}
#endif

25
imgui.h
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@ -35,6 +35,7 @@ Index of this file:
// [SECTION] Drawing API (ImDrawCallback, ImDrawCmd, ImDrawIdx, ImDrawVert, ImDrawChannel, ImDrawListSplitter, ImDrawFlags, ImDrawListFlags, ImDrawList, ImDrawData)
// [SECTION] Font API (ImFontConfig, ImFontGlyph, ImFontGlyphRangesBuilder, ImFontAtlasFlags, ImFontAtlas, ImFont)
// [SECTION] Viewports (ImGuiViewportFlags, ImGuiViewport)
// [SECTION] Platform Dependent Interfaces (ImGuiPlatformImeData)
// [SECTION] Obsolete functions and types
*/
@ -64,7 +65,7 @@ Index of this file:
// Version
// (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at XYY99 then bounce up to XYY00, XYY01 etc. when release tagging happens)
#define IMGUI_VERSION "1.87 WIP"
#define IMGUI_VERSION_NUM 18602
#define IMGUI_VERSION_NUM 18603
#define IMGUI_CHECKVERSION() ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert), sizeof(ImDrawIdx))
#define IMGUI_HAS_TABLE
@ -154,6 +155,7 @@ struct ImGuiInputTextCallbackData; // Shared state of InputText() when using cu
struct ImGuiListClipper; // Helper to manually clip large list of items
struct ImGuiOnceUponAFrame; // Helper for running a block of code not more than once a frame
struct ImGuiPayload; // User data payload for drag and drop operations
struct ImGuiPlatformImeData; // Platform IME data for io.SetPlatformImeDataFn() function.
struct ImGuiSizeCallbackData; // Callback data when using SetNextWindowSizeConstraints() (rare/advanced use)
struct ImGuiStorage; // Helper for key->value storage
struct ImGuiStyle; // Runtime data for styling/colors
@ -1868,8 +1870,12 @@ struct ImGuiIO
// Optional: Notify OS Input Method Editor of the screen position of your cursor for text input position (e.g. when using Japanese/Chinese IME on Windows)
// (default to use native imm32 api on Windows)
void (*ImeSetInputScreenPosFn)(int x, int y);
void* ImeWindowHandle; // = NULL // (Windows) Set this to your HWND to get automatic IME cursor positioning.
void (*SetPlatformImeDataFn)(ImGuiViewport* viewport, ImGuiPlatformImeData* data);
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
void* ImeWindowHandle; // = NULL // [Obsolete] Set ImGuiViewport::PlatformHandleRaw instead. Set this to your HWND to get automatic IME cursor positioning.
#else
void* _UnusedPadding; // Unused field to keep data structure the same size.
#endif
//------------------------------------------------------------------
// Input - Fill before calling NewFrame()
@ -2809,6 +2815,9 @@ struct ImGuiViewport
ImVec2 WorkPos; // Work Area: Position of the viewport minus task bars, menus bars, status bars (>= Pos)
ImVec2 WorkSize; // Work Area: Size of the viewport minus task bars, menu bars, status bars (<= Size)
// Platform/Backend Dependent Data
void* PlatformHandleRaw; // void* to hold lower-level, platform-native window handle (under Win32 this is expected to be a HWND, unused for other platforms)
ImGuiViewport() { memset(this, 0, sizeof(*this)); }
// Helpers
@ -2816,6 +2825,16 @@ struct ImGuiViewport
ImVec2 GetWorkCenter() const { return ImVec2(WorkPos.x + WorkSize.x * 0.5f, WorkPos.y + WorkSize.y * 0.5f); }
};
//-----------------------------------------------------------------------------
// [SECTION] Platform Dependent Interfaces
//-----------------------------------------------------------------------------
// (Optional) Support for IME (Input Method Editor) via the io.SetPlatformImeDataFn() function.
struct ImGuiPlatformImeData
{
ImVec2 InputPos; // Position of the input cursor
};
//-----------------------------------------------------------------------------
// [SECTION] Obsolete functions and types
// (Will be removed! Read 'API BREAKING CHANGES' section in imgui.cpp for details)