dlxjj/imradv3

1#pragma once2#include "imgui.h"3#include "imgui_internal.h"4#include <functional>5 6class SimpleLayout {7public:8    // 使用函数对象代替函数指针，更现代的C++风格9    using WindowCallback = std::function<void()>;10 11    SimpleLayout(float splitRatio = 0.5f)12        : m_splitRatio(splitRatio)13        , m_splitBarWidth(4.0f)14        , m_isDragging(false)15        , m_splitBarHeld(false)16        , m_splitBarDelta(0.0f)17    {}18 19    void SetLeftWindow(WindowCallback callback) { m_leftWindow = callback; }20    void SetRightWindow(WindowCallback callback) { m_rightWindow = callback; }21 22    void Draw() {23        ImGuiViewport* viewport = ImGui::GetMainViewport();24        ImVec2 pos = viewport->WorkPos;25        ImVec2 size = viewport->WorkSize;26 27        // 计算左右窗口的位置和大小28        float splitX = pos.x + size.x * m_splitRatio;29        30        // 绘制左窗口31        if (m_leftWindow) {32            ImGui::SetNextWindowPos(ImVec2(pos.x, pos.y));33            ImGui::SetNextWindowSize(ImVec2(splitX - pos.x - m_splitBarWidth/2, size.y));34            ImGui::Begin("Left Window", nullptr, ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoTitleBar);35            m_leftWindow();36            ImGui::End();37        }38 39        // 绘制右窗口40        if (m_rightWindow) {41            ImGui::SetNextWindowPos(ImVec2(splitX + m_splitBarWidth/2, pos.y));42            ImGui::SetNextWindowSize(ImVec2(size.x - (splitX - pos.x) - m_splitBarWidth/2, size.y));43            ImGui::Begin("Right Window", nullptr, ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoTitleBar);44            m_rightWindow();45            ImGui::End();46        }47 48        // 处理分隔条49        ImGui::SetNextWindowPos(ImVec2(splitX - m_splitBarWidth/2, pos.y));50        ImGui::SetNextWindowSize(ImVec2(m_splitBarWidth, size.y));51        ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(0.3f, 0.3f, 0.3f, 1.0f));52        ImGui::Begin("##Splitter", nullptr, 53            ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | 54            ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoBringToFrontOnFocus);55 56        // 处理拖拽57        if (!m_splitBarHeld) {58            // 检测鼠标是否悬停在分隔条上59            ImVec2 splitBarMin = ImGui::GetWindowPos();60            ImVec2 splitBarMax = ImVec2(splitBarMin.x + ImGui::GetWindowSize().x,61                                       splitBarMin.y + ImGui::GetWindowSize().y);62            63            if (ImGui::IsMouseHoveringRect(splitBarMin, splitBarMax, false)) {64                ImGui::SetMouseCursor(ImGuiMouseCursor_ResizeEW);65                66                if (ImGui::IsMouseClicked(ImGuiMouseButton_Left)) {67                    m_splitBarHeld = true;68                    m_splitBarDelta = splitX - ImGui::GetMousePos().x;69                }70            }71        } else {72            if (ImGui::IsMouseDown(ImGuiMouseButton_Left)) {73                ImGui::SetMouseCursor(ImGuiMouseCursor_ResizeEW);74                75                // 计算新的分隔比例76                float newSplitX = ImGui::GetMousePos().x + m_splitBarDelta;77                float newRatio = (newSplitX - pos.x) / size.x;78                79                // 限制分隔条的移动范围80                m_splitRatio = ImClamp(newRatio, 0.1f, 0.9f);81            } else {82                m_splitBarHeld = false;83            }84        }85 86        ImGui::End();87        ImGui::PopStyleColor();88    }89 90private:91    float m_splitRatio;        // 分割比例（0-1）92    float m_splitBarWidth;     // 分隔条宽度93    bool m_isDragging;         // 是否正在拖拽（已废弃）94    bool m_splitBarHeld;       // 分隔条是否被按住95    float m_splitBarDelta;     // 鼠标按下时与分隔条的位置差96    WindowCallback m_leftWindow;  // 左窗口回调97    WindowCallback m_rightWindow; // 右窗口回调98};