mirror of
https://github.com/ocornut/imgui.git
synced 2026-11-06 14:35:51 +01:00
252 lines
9.4 KiB
C++
252 lines
9.4 KiB
C++
#include <pthread.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 "imgui.h"
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#include "imgui_impl_android.h"
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#include "imgui_impl_opengl3.h"
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#include "dobby.h"
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#include <android/log.h>
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#include <android/input.h>
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#define LOG_TAG "AndKitty_Menu"
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#define LOGI(...) __android_log_print(ANDROID_LOG_INFO, LOG_TAG, __VA_ARGS__)
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#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__)
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// --- 全局状态 ---
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static bool g_Initialized = false;
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static bool g_ShowMenu = true;
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static float g_Width = 0, g_Height = 0;
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struct TouchState {
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float x, y;
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bool down;
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// 用于简单去抖或日志
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int frameCounter;
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} g_Touch = {0, 0, false, 0};
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// --- 原函数指针 ---
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typedef int32_t (*p_getPointerId)(const AInputEvent* motion_event, size_t pointer_index);
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static p_getPointerId old_getPointerId = nullptr;
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typedef float (*p_getRawX)(const AInputEvent* motion_event, size_t pointer_index);
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static p_getRawX old_getRawX = nullptr;
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typedef float (*p_getRawY)(const AInputEvent* motion_event, size_t pointer_index);
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static p_getRawY old_getRawY = nullptr;
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typedef EGLBoolean (*p_eglSwapBuffers)(EGLDisplay dpy, EGLSurface surface);
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static p_eglSwapBuffers old_eglSwapBuffers = nullptr;
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// ---------------------------------------------------------------------
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// 真正实时更新坐标和触摸状态的 Hook 函数
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// ---------------------------------------------------------------------
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// 辅助函数：从事件中提取动作并更新 down 状态
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static void UpdateTouchFromEvent(const AInputEvent* event, size_t pointer_index) {
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if (!event || AInputEvent_getType(event) != AINPUT_EVENT_TYPE_MOTION)
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return;
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int32_t action = AMotionEvent_getAction(event) & AMOTION_EVENT_ACTION_MASK;
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int32_t pointerId = AMotionEvent_getPointerId(event, pointer_index);
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// 简单起见，只跟踪第一个手指 (pointer_index == 0)
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// 如果游戏使用多指，可以根据需要扩展
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if (pointer_index == 0) {
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if (action == AMOTION_EVENT_ACTION_DOWN || action == AMOTION_EVENT_ACTION_POINTER_DOWN) {
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g_Touch.down = true;
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} else if (action == AMOTION_EVENT_ACTION_UP || action == AMOTION_EVENT_ACTION_POINTER_UP ||
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action == AMOTION_EVENT_ACTION_CANCEL) {
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g_Touch.down = false;
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}
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// MOVE 事件时保持 down 状态不变（已经为 true）
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}
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}
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// Hook getRawX: 每次游戏获取 X 坐标时更新 x 和触摸状态
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float hook_getRawX(const AInputEvent* event, size_t index) {
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if (event && old_getRawX) {
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// 先获取原始 X 坐标
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float x = old_getRawX(event, index);
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// 更新全局触摸坐标
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g_Touch.x = x;
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// 更新触摸状态（down/up）
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UpdateTouchFromEvent(event, index);
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return x;
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}
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return 0.0f;
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}
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// Hook getRawY: 每次游戏获取 Y 坐标时更新 y
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float hook_getRawY(const AInputEvent* event, size_t index) {
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if (event && old_getRawY) {
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float y = old_getRawY(event, index);
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g_Touch.y = y;
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// 再次更新状态（可选，和上面重复但无害）
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UpdateTouchFromEvent(event, index);
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return y;
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}
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return 0.0f;
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}
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// 保留对 getPointerId 的 Hook，但只转发调用，不再更新坐标（避免重复）
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int32_t hook_getPointerId(const AInputEvent* event, size_t index) {
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// 简单转发，不做额外处理
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return old_getPointerId ? old_getPointerId(event, index) : 0;
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}
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// ---------------------------------------------------------------------
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// 渲染 Hook
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// ---------------------------------------------------------------------
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EGLBoolean hook_eglSwapBuffers(EGLDisplay dpy, EGLSurface surface) {
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// 获取屏幕尺寸（仅一次或尺寸改变时更新）
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if (g_Width <= 0 || g_Height <= 0) {
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EGLint w, h;
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eglQuerySurface(dpy, surface, EGL_WIDTH, &w);
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eglQuerySurface(dpy, surface, EGL_HEIGHT, &h);
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g_Width = (float)w;
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g_Height = (float)h;
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LOGI("Screen size: %.0f x %.0f", g_Width, g_Height);
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}
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// 初始化 ImGui（只一次）
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if (!g_Initialized) {
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ImGui::CreateContext();
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ImGui_ImplOpenGL3_Init("#version 300 es");
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// 可选：调整样式以适应触摸屏
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ImGui::GetStyle().TouchPadding = ImVec2(10, 10);
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ImGui::GetStyle().ScaleAllSizes(2.5f);
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g_Initialized = true;
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LOGI("ImGui initialized");
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}
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// 开始 ImGui 帧
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ImGui_ImplOpenGL3_NewFrame();
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ImGui::NewFrame();
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// 更新 ImGui IO 的鼠标输入
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ImGuiIO& io = ImGui::GetIO();
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io.DisplaySize = ImVec2(g_Width, g_Height);
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io.MousePos = ImVec2(g_Touch.x, g_Touch.y);
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io.MouseDown[0] = g_Touch.down;
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// 可选：打印调试信息（每 120 帧打印一次，避免刷屏）
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if (g_Touch.frameCounter++ % 120 == 0) {
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LOGI("Touch: (%.1f, %.1f) down=%d", g_Touch.x, g_Touch.y, g_Touch.down);
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}
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// 绘制菜单
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if (g_ShowMenu) {
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ImGui::SetNextWindowSize(ImVec2(500, 400), ImGuiCond_FirstUseEver);
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ImGui::SetNextWindowPos(ImVec2(50, 50), ImGuiCond_FirstUseEver);
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if (ImGui::Begin("AndKitty SGame Final", &g_ShowMenu)) {
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ImGui::Text("Status: Input Hooked (RawX/Y)");
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ImGui::Text("Touch Pos: %.1f, %.1f", g_Touch.x, g_Touch.y);
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ImGui::Text("Touch State: %s", g_Touch.down ? "DOWN" : "UP");
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ImGui::Separator();
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static bool testFlag = false;
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ImGui::Checkbox("Function Test", &testFlag);
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if (ImGui::Button("Hide Menu")) {
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g_ShowMenu = false;
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LOGI("Menu hidden by button");
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}
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}
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ImGui::End();
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} else {
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// 可选：显示一个小的重新打开按钮（例如通过音量键或触摸区域，这里简单通过坐标判断）
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// 为了演示，添加一个“Show”按钮在左上角（即使菜单关闭也显示一个小区域）
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// 实际使用时建议用系统按键回调，这里简化处理
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ImGui::SetNextWindowSize(ImVec2(100, 50), ImGuiCond_Always);
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ImGui::SetNextWindowPos(ImVec2(10, 10), ImGuiCond_Always);
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if (ImGui::Begin("Menu Controller", nullptr, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize)) {
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if (ImGui::Button("Show Menu")) {
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g_ShowMenu = true;
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LOGI("Menu shown by button");
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}
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}
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ImGui::End();
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}
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// 渲染
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ImGui::Render();
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ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
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// 调用原始 eglSwapBuffers
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return old_eglSwapBuffers(dpy, surface);
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}
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// ---------------------------------------------------------------------
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// 初始化线程
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// ---------------------------------------------------------------------
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void* init_thread(void*) {
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LOGI("Init thread started");
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// 1. Hook eglSwapBuffers（渲染）
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void* eglFunc = dlsym(RTLD_DEFAULT, "eglSwapBuffers");
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if (eglFunc) {
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DobbyHook(eglFunc, (void*)hook_eglSwapBuffers, (void**)&old_eglSwapBuffers);
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LOGI("Hooked eglSwapBuffers at %p", eglFunc);
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} else {
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LOGE("Failed to find eglSwapBuffers");
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}
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// 2. Hook Android 输入函数（关键修复点）
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void* libandroid = dlopen("libandroid.so", RTLD_NOW);
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if (libandroid) {
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// 获取需要 Hook 的函数地址
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void* getPointerId = dlsym(libandroid, "AMotionEvent_getPointerId");
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void* getRawX = dlsym(libandroid, "AMotionEvent_getRawX");
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void* getRawY = dlsym(libandroid, "AMotionEvent_getRawY");
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// 如果找不到 RawX/RawY，回退到普通 getX/getY（相对坐标，可能不准）
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if (!getRawX) {
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getRawX = dlsym(libandroid, "AMotionEvent_getX");
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LOGI("Using AMotionEvent_getX as fallback");
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}
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if (!getRawY) {
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getRawY = dlsym(libandroid, "AMotionEvent_getY");
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LOGI("Using AMotionEvent_getY as fallback");
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}
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// Hook getRawX 和 getRawY（这是实时更新坐标的关键）
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if (getRawX) {
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DobbyHook(getRawX, (void*)hook_getRawX, (void**)&old_getRawX);
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LOGI("Hooked getRawX at %p", getRawX);
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} else {
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LOGE("Cannot find getX/getRawX function");
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}
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if (getRawY) {
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DobbyHook(getRawY, (void*)hook_getRawY, (void**)&old_getRawY);
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LOGI("Hooked getRawY at %p", getRawY);
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} else {
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LOGE("Cannot find getY/getRawY function");
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}
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// Hook getPointerId 保持兼容（可选）
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if (getPointerId) {
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DobbyHook(getPointerId, (void*)hook_getPointerId, (void**)&old_getPointerId);
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LOGI("Hooked getPointerId at %p", getPointerId);
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}
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dlclose(libandroid); // 注意：dlclose 可能使 dlsym 返回的地址失效，但 DobbyHook 已复制指令，通常安全。建议不要 dlclose。
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// 更安全的做法是不调用 dlclose，保持 libandroid 加载。这里注释掉 dlclose。
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// dlclose(libandroid);
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} else {
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LOGE("Failed to load libandroid.so");
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}
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LOGI("Init thread finished");
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return nullptr;
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}
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// ---------------------------------------------------------------------
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// 入口点（构造函数）
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// ---------------------------------------------------------------------
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__attribute__((constructor))
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void entry() {
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pthread_t thread;
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pthread_create(&thread, nullptr, init_thread, nullptr);
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pthread_detach(thread); // 让线程自动回收
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}
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