mirror of
https://github.com/ocornut/imgui.git
synced 2026-11-06 22:45:48 +01:00
136 lines
3.8 KiB
C++
136 lines
3.8 KiB
C++
#include <jni.h>
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#include <pthread.h>
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#include <unistd.h>
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#include <android/log.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <dlfcn.h>
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#include <EGL/egl.h>
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#include <GLES3/gl3.h>
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#include "dobby.h"
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// ImGui 包含
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#include "imgui.h"
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#include "backends/imgui_impl_opengl3.h"
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#define TAG "JKMenu_SGame"
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#define LOGI(...) __android_log_print(ANDROID_LOG_INFO, TAG, __VA_ARGS__)
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#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR, TAG, __VA_ARGS__)
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// --- 全局变量 ---
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bool g_Initialized = false;
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bool g_ShowMenu = true;
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pthread_mutex_t g_CtxMutex = PTHREAD_MUTEX_INITIALIZER;
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EGLBoolean (*old_eglSwapBuffers)(EGLDisplay dpy, EGLSurface surface) = nullptr;
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// 获取模块基址
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uintptr_t get_module_base(const char* name) {
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FILE* fp = fopen("/proc/self/maps", "r");
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char line[1024];
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uintptr_t base = 0;
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while (fp && fgets(line, sizeof(line), fp)) {
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if (strstr(line, name)) {
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base = (uintptr_t)strtoull(line, NULL, 16);
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break;
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}
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}
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if (fp) fclose(fp);
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return base;
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}
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// --- ImGui 绘制逻辑 ---
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void DrawImGui(int width, int height) {
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if (!g_ShowMenu) return;
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ImGui_ImplOpenGL3_NewFrame();
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ImGui::NewFrame();
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ImGui::SetNextWindowPos(ImVec2(100, 100), ImGuiCond_FirstUseEver);
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ImGui::SetNextWindowSize(ImVec2(500, 400), ImGuiCond_FirstUseEver);
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if (ImGui::Begin("JKMenu v3.6 - Stable Build", &g_ShowMenu)) {
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ImGui::TextColored(ImVec4(0, 1, 0, 1), "Status: Render Thread Active");
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ImGui::Text("Viewport: %d x %d", width, height);
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ImGui::Separator();
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static bool test_check = false;
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ImGui::Checkbox("Test Feature", &test_check);
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if (ImGui::Button("Hide Menu")) {
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g_ShowMenu = false;
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}
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}
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ImGui::End();
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ImGui::Render();
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ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
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}
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// --- Hook 后的 eglSwapBuffers ---
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EGLBoolean hook_eglSwapBuffers(EGLDisplay dpy, EGLSurface surface) {
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pthread_mutex_lock(&g_CtxMutex);
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EGLint width, height;
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eglQuerySurface(dpy, surface, EGL_WIDTH, &width);
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eglQuerySurface(dpy, surface, EGL_HEIGHT, &height);
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if (!g_Initialized) {
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LOGI("Attempting ImGui Init (Viewport: %dx%d)", width, height);
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IMGUI_CHECKVERSION();
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ImGui::CreateContext();
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ImGuiIO& io = ImGui::GetIO();
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io.DisplaySize = ImVec2((float)width, (float)height);
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io.IniFilename = nullptr;
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// 在 Hook 模式下，跳过 ImGui_ImplAndroid_Init
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// 因为我们没有 NativeWindow，直接初始化渲染器后端
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if (ImGui_ImplOpenGL3_Init("#version 300 es")) {
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g_Initialized = true;
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LOGI("ImGui Init Success.");
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} else {
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LOGE("ImGui_ImplOpenGL3_Init Failed!");
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}
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}
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if (g_Initialized) {
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ImGui::GetIO().DisplaySize = ImVec2((float)width, (float)height);
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DrawImGui(width, height);
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}
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pthread_mutex_unlock(&g_CtxMutex);
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return old_eglSwapBuffers(dpy, surface);
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}
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void* init_thread(void*) {
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LOGI("Thread started, entering monitoring loop...");
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// 等待 libEGL.so
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uintptr_t egl_base = 0;
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while (egl_base == 0) {
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egl_base = get_module_base("libEGL.so");
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if (egl_base == 0) sleep(1);
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}
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void* sym_eglSwapBuffers = dlsym(RTLD_DEFAULT, "eglSwapBuffers");
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if (sym_eglSwapBuffers) {
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LOGI("Hooking eglSwapBuffers at %p", sym_eglSwapBuffers);
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DobbyHook(sym_eglSwapBuffers, (void*)hook_eglSwapBuffers, (void**)&old_eglSwapBuffers);
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}
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return nullptr;
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}
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__attribute__((constructor))
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void _init() {
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pthread_t tid;
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pthread_create(&tid, nullptr, init_thread, nullptr);
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pthread_detach(tid);
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}
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JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM* vm, void* reserved) {
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return JNI_VERSION_1_6;
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}
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