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Windows: setup a default handler for ImeSetInputScreenPosFn so IME (Japanese/Chinese) inputs are positioned correctly.

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User need to set io.ImeWindowHandle
docking
ocornut 10 years ago
parent 0ffd99d319
commit e269125c3a
7 changed files with 72 additions and 34 deletions
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2
examples/directx11_example/main.cpp
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@ -448,7 +448,9 @@ void InitImGui()
io.KeyMap[ImGuiKey_X] = 'X';
io.KeyMap[ImGuiKey_Y] = 'Y';
io.KeyMap[ImGuiKey_Z] = 'Z';
io.RenderDrawListsFn = ImImpl_RenderDrawLists;
io.ImeWindowHandle = hWnd;
// Create the vertex buffer
{

1
examples/directx9_example/main.cpp
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@ -240,6 +240,7 @@ void InitImGui()
io.KeyMap[ImGuiKey_Z] = 'Z';
io.RenderDrawListsFn = ImImpl_RenderDrawLists;
io.ImeWindowHandle = hWnd;
// Create the vertex buffer
if (g_pd3dDevice->CreateVertexBuffer(10000 * sizeof(CUSTOMVERTEX), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &g_pVB, NULL) < 0)

14
examples/opengl3_example/main.cpp
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@ -10,14 +10,21 @@
#include "../../imgui.h"
#include <stdio.h>
// Gl3w/Glfw
// Gl3W / GLFW
#include <GL/gl3w.h>
#include <GLFW/glfw3.h>
#define OFFSETOF(TYPE, ELEMENT) ((size_t)&(((TYPE *)0)->ELEMENT))
#ifdef _MSC_VER
#undef APIENTRY
#define GLFW_EXPOSE_NATIVE_WIN32
#define GLFW_EXPOSE_NATIVE_WGL
#include <GLFW/glfw3native.h>
#endif
static GLFWwindow* window;
static bool mousePressed[2] = { false, false };
#define OFFSETOF(TYPE, ELEMENT) ((size_t)&(((TYPE *)0)->ELEMENT))
// Shader variables
static int shader_handle, vert_handle, frag_handle;
static int texture_location, proj_mtx_location;
@ -279,6 +286,9 @@ void InitImGui()
io.RenderDrawListsFn = ImImpl_RenderDrawLists;
io.SetClipboardTextFn = ImImpl_SetClipboardTextFn;
io.GetClipboardTextFn = ImImpl_GetClipboardTextFn;
#ifdef _MSC_VER
io.ImeWindowHandle = glfwGetWin32Window(window);
#endif
LoadFontsTexture();
}

16
examples/opengl_example/main.cpp
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@ -10,13 +10,20 @@
#include "../../imgui.h"
#include <stdio.h>
// Glfw
// GLFW
#include <GLFW/glfw3.h>
#define OFFSETOF(TYPE, ELEMENT) ((size_t)&(((TYPE *)0)->ELEMENT))
#ifdef _MSC_VER
#undef APIENTRY
#define GLFW_EXPOSE_NATIVE_WIN32
#define GLFW_EXPOSE_NATIVE_WGL
#include <GLFW/glfw3native.h>
#endif
static GLFWwindow* window;
static bool mousePressed[2] = { false, false };
#define OFFSETOF(TYPE, ELEMENT) ((size_t)&(((TYPE *)0)->ELEMENT))
// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
// If text or lines are blurry when integrating ImGui in your engine:
// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
@ -92,7 +99,7 @@ static void ImImpl_SetClipboardTextFn(const char* text)
glfwSetClipboardString(window, text);
}
// GLFW callbacks to get events
// GLFW callbacks
static void glfw_error_callback(int error, const char* description)
{
fputs(description, stderr);
@ -190,6 +197,9 @@ void InitImGui()
io.RenderDrawListsFn = ImImpl_RenderDrawLists;
io.SetClipboardTextFn = ImImpl_SetClipboardTextFn;
io.GetClipboardTextFn = ImImpl_GetClipboardTextFn;
#ifdef _MSC_VER
io.ImeWindowHandle = glfwGetWin32Window(window);
#endif
LoadFontsTexture();
}

3
imconfig.h
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@ -18,8 +18,9 @@
//#define IMGUI_API __declspec( dllexport )
//#define IMGUI_API __declspec( dllimport )
//---- Don't implement default clipboard handlers for Windows (so as not to link with OpenClipboard() and others Win32 functions)
//---- Don't implement default handlers for Windows (so as not to link with OpenClipboard() and others Win32 functions)
//#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS
//#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS
//---- Include imgui_user.inl at the end of imgui.cpp so you can include code that extends ImGui using its private data/functions.
//#define IMGUI_INCLUDE_IMGUI_USER_INL

65
imgui.cpp
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@ -207,30 +207,7 @@
io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels, io.Fonts->GetGlyphRangesJapanese()); // Load Japanese characters
io.Fonts->GetTexDataAsRGBA32() or GetTexDataAsAlpha8()
If you want to input Japanese/Chinese/Korean in the text input widget:
- when loading the font, pass a range that contains the characters you need, e.g.: io.Fonts->GetGlyphRangesJapanese()
- to have the Microsoft IME cursor appears at the right location in the screen, setup a handler for the io.ImeSetInputScreenPosFn function:
#include <Windows.h>
#include <Imm.h>
static void ImImpl_ImeSetInputScreenPosFn(int x, int y)
{
// Notify OS Input Method Editor of text input position
HWND hwnd = glfwGetWin32Window(window);
if (HIMC himc = ImmGetContext(hwnd))
{
COMPOSITIONFORM cf;
cf.ptCurrentPos.x = x;
cf.ptCurrentPos.y = y;
cf.dwStyle = CFS_FORCE_POSITION;
ImmSetCompositionWindow(himc, &cf);
}
}
// Set pointer to handler in ImGuiIO structure
io.ImeSetInputScreenPosFn = ImImpl_ImeSetInputScreenPosFn;
io.ImeWindowHandle = MY_HWND; // To input using Microsoft IME, give ImGui the hwnd of your application
- tip: the construct 'IMGUI_ONCE_UPON_A_FRAME { ... }' will run the block of code only once a frame. You can use it to quickly add custom UI in the middle of a deep nested inner loop in your code.
- tip: you can create widgets without a Begin()/End() block, they will go in an implicit window called "Debug"
@ -459,6 +436,7 @@ static int ImTextCountUtf8BytesFromWchar(const ImWchar* in_text, const
static const char* GetClipboardTextFn_DefaultImpl();
static void SetClipboardTextFn_DefaultImpl(const char* text);
static void ImeSetInputScreenPosFn_DefaultImpl(int x, int y);
//-----------------------------------------------------------------------------
// Texture Atlas data
@ -562,7 +540,7 @@ ImGuiIO::ImGuiIO()
MemFreeFn = free;
GetClipboardTextFn = GetClipboardTextFn_DefaultImpl; // Platform dependent default implementations
SetClipboardTextFn = SetClipboardTextFn_DefaultImpl;
ImeSetInputScreenPosFn = NULL;
ImeSetInputScreenPosFn = ImeSetInputScreenPosFn_DefaultImpl;
}
// Pass in translated ASCII characters for text input.
@ -8117,11 +8095,13 @@ void ImFont::RenderText(float size, ImVec2 pos, ImU32 col, const ImVec4& clip_re
#if defined(_MSC_VER) && !defined(IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS)
#ifndef _WINDOWS_
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#endif
// Win32 API clipboard implementation
static const char* GetClipboardTextFn_DefaultImpl()
static const char* GetClipboardTextFn_DefaultImpl()
{
static char* buf_local = NULL;
if (buf_local)
@ -8163,7 +8143,7 @@ static void SetClipboardTextFn_DefaultImpl(const char* text)
#else
// Local ImGui-only clipboard implementation, if user hasn't defined better clipboard handlers
static const char* GetClipboardTextFn_DefaultImpl()
static const char* GetClipboardTextFn_DefaultImpl()
{
return GImGui->PrivateClipboard;
}
@ -8185,6 +8165,37 @@ static void SetClipboardTextFn_DefaultImpl(const char* text)
#endif
#if defined(_MSC_VER) && !defined(IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS)
#ifndef _WINDOWS_
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#endif
#include <Imm.h>
#pragma comment(lib, "imm32")
static void ImeSetInputScreenPosFn_DefaultImpl(int x, int y)
{
// Notify OS Input Method Editor of text input position
if (HWND hwnd = (HWND)GImGui->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);
}
}
#else
static void ImeSetInputScreenPosFn_DefaultImpl(int x, int y)
{
}
#endif
//-----------------------------------------------------------------------------
// HELP
//-----------------------------------------------------------------------------

5
imgui.h
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@ -574,12 +574,15 @@ struct ImGuiIO
const char* (*GetClipboardTextFn)();
void (*SetClipboardTextFn)(const char* text);
// Optional: override memory allocations (default to posix malloc/free). MemFreeFn() may be called with a NULL pointer.
// Optional: override memory allocations. MemFreeFn() may be called with a NULL pointer.
// (default to posix malloc/free)
void* (*MemAllocFn)(size_t sz);
void (*MemFreeFn)(void* ptr);
// Optional: notify OS Input Method Editor of the screen position of your cursor for text input position (e.g. when using Japanese/Chinese IME in Windows)
// (default to use native imm32 api on Windows)
void (*ImeSetInputScreenPosFn)(int x, int y);
void* ImeWindowHandle; // (Windows) Set this to your HWND to get automatic IME cursor positioning.
//------------------------------------------------------------------
// Input - Fill before calling NewFrame()

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