Update Windows build documentation

deleted:    build_windows.bat
	deleted:    build_wsl_windows.sh
	deleted:    cmake/toolchains/mingw64.cmake

.gitea/workflows/build-windows-release.yml

@@ -1,202 +0,0 @@
-name: Build Windows Release
-
-on:
-  push:
-    branches:
-      - main
-    tags:
-      - 'v*'
-  workflow_dispatch:
-
-permissions:
-  contents: write
-
-jobs:
-  build-windows-release:
-    name: Build Windows x64 Release
-    # Windows runner 已注册标签：windows-latest、windows-2022、self-hosted；均为 host 模式。
-    runs-on: windows-2022
-
-    env:
-      BUILD_TYPE: Release
-      MSYS2_ROOT: C:\msys64
-      MSYSTEM: UCRT64
-      CHERE_INVOKING: 1
-      PACKAGE_BASENAME: chengnan-windows-x64
-      PACKAGE_NAME: chengnan-windows-x64
-
-    steps:
-      - name: Prepare source
-        shell: powershell
-        run: |
-          $ErrorActionPreference = 'Stop'
-          $work = Join-Path $env:RUNNER_TEMP 'chengnan-src'
-          $srcFixed = Join-Path $env:RUNNER_TEMP 'chengnan-work'
-          $zip = Join-Path $env:RUNNER_TEMP 'chengnan-src.zip'
-          if (Test-Path $work) { Remove-Item -Recurse -Force $work }
-          if (Test-Path $srcFixed) { Remove-Item -Recurse -Force $srcFixed }
-          if (Test-Path $zip) { Remove-Item -Force $zip }
-          New-Item -ItemType Directory -Force -Path $work | Out-Null
-
-          $serverUrl = if ($env:GITHUB_SERVER_URL) { $env:GITHUB_SERVER_URL.TrimEnd('/') } else { 'https://git.luochen570.cn' }
-          $archiveUrl = "$serverUrl/$env:GITHUB_REPOSITORY/archive/$env:GITHUB_SHA.zip"
-          Write-Host "Downloading source archive from $archiveUrl"
-          Invoke-WebRequest -Uri $archiveUrl -OutFile $zip
-          Expand-Archive -Path $zip -DestinationPath $work -Force
-
-          $src = Get-ChildItem -Path $work -Directory | Select-Object -First 1
-          if (-not $src) { throw 'Source archive extraction produced no directory' }
-          Copy-Item -Path $src.FullName -Destination $srcFixed -Recurse -Force
-          Write-Host "Source dir: $srcFixed"
-
-      - name: Install MSYS2 and build dependencies
-        shell: powershell
-        run: |
-          $ErrorActionPreference = 'Stop'
-          $msysRoot = $env:MSYS2_ROOT
-          if (-not (Test-Path "$msysRoot\usr\bin\bash.exe")) {
-            $installer = Join-Path $env:RUNNER_TEMP 'msys2-installer.exe'
-            $installerUrl = 'https://github.com/msys2/msys2-installer/releases/latest/download/msys2-x86_64-latest.exe'
-            Write-Host "Downloading MSYS2 installer from $installerUrl"
-            Invoke-WebRequest -Uri $installerUrl -OutFile $installer
-            & $installer in --confirm-command --accept-messages --root $msysRoot
-          }
-
-          $bash = "$msysRoot\usr\bin\bash.exe"
-          & $bash -lc "pacman --noconfirm -Syuu"
-          if ($LASTEXITCODE -ne 0) { Write-Host 'First pacman system update returned non-zero; continuing with second update.' }
-          & $bash -lc "pacman --noconfirm -Syuu"
-          if ($LASTEXITCODE -ne 0) { throw "pacman system update failed, exit code: $LASTEXITCODE" }
-          & $bash -lc "pacman --noconfirm -S --needed git zip unzip p7zip mingw-w64-ucrt-x86_64-toolchain mingw-w64-ucrt-x86_64-cmake mingw-w64-ucrt-x86_64-ninja mingw-w64-ucrt-x86_64-qt6-base mingw-w64-ucrt-x86_64-qt6-imageformats"
-          if ($LASTEXITCODE -ne 0) { throw "pacman dependency installation failed, exit code: $LASTEXITCODE" }
-
-      - name: Configure and build
-        shell: powershell
-        run: |
-          $ErrorActionPreference = 'Stop'
-          $bash = "$env:MSYS2_ROOT\usr\bin\bash.exe"
-          $srcWin = Join-Path $env:RUNNER_TEMP 'chengnan-work'
-          $src = $srcWin -replace '\\','/'
-          $src = $src -replace '^([A-Za-z]):','/$1'
-          $src = $src.ToLower()
-          $script = @"
-          set -euo pipefail
-          cd '$src'
-          export PATH=/ucrt64/bin:/usr/bin:`$PATH
-          cmake -S . -B build-windows -G Ninja -DCMAKE_BUILD_TYPE=Release
-          cmake --build build-windows --parallel `$(nproc)
-          rm -rf dist-windows
-          mkdir -p dist-windows/chengnan
-          cp build-windows/chengnan.exe dist-windows/chengnan/
-          /ucrt64/bin/windeployqt6.exe --release --no-translations dist-windows/chengnan/chengnan.exe || /ucrt64/bin/windeployqt.exe --release --no-translations dist-windows/chengnan/chengnan.exe
-          printf '%s\n' 'chengnan Windows x64 package' '' 'Usage:' '1. Extract the whole directory.' '2. Double-click chengnan.exe to run.' '' 'Note:' '- This package is built by Windows Runner with MSYS2 UCRT64 + Qt.' '- Do not copy chengnan.exe alone; keep DLLs and Qt plugin directories together.' > dist-windows/chengnan/README.txt
-          "@
-          & $bash -lc $script
-
-      - name: Package
-        shell: powershell
-        run: |
-          $ErrorActionPreference = 'Stop'
-          $shortSha = $env:GITHUB_SHA.Substring(0, 10)
-          $version = if ($env:GITHUB_REF_TYPE -eq 'tag') { $env:GITHUB_REF_NAME } else { "build-$shortSha" }
-          $zipName = "$env:PACKAGE_BASENAME-$version.zip"
-          $sourceDir = Join-Path $env:RUNNER_TEMP 'chengnan-work'
-          $dist = Join-Path $sourceDir 'dist-windows\chengnan'
-          if (-not (Test-Path "$dist\chengnan.exe")) { throw "Missing build output: $dist\chengnan.exe" }
-          Push-Location (Split-Path $dist -Parent)
-          if (Test-Path (Join-Path $sourceDir $zipName)) { Remove-Item -Force (Join-Path $sourceDir $zipName) }
-          Compress-Archive -Path 'chengnan\*' -DestinationPath (Join-Path $sourceDir $zipName) -Force
-          Pop-Location
-          $zipPath = Join-Path $sourceDir $zipName
-          $hash = (Get-FileHash $zipPath -Algorithm SHA256).Hash.ToLowerInvariant()
-          "$hash  $zipName" | Out-File -FilePath "$zipPath.sha256" -Encoding ascii
-          Write-Host "Package: $zipPath"
-          Write-Host "SHA256: $hash"
-
-      - name: Verify package
-        shell: powershell
-        run: |
-          $ErrorActionPreference = 'Stop'
-          $shortSha = $env:GITHUB_SHA.Substring(0, 10)
-          $version = if ($env:GITHUB_REF_TYPE -eq 'tag') { $env:GITHUB_REF_NAME } else { "build-$shortSha" }
-          $zipName = "$env:PACKAGE_BASENAME-$version.zip"
-          $sourceDir = Join-Path $env:RUNNER_TEMP 'chengnan-work'
-          $zipPath = Join-Path $sourceDir $zipName
-          $shaPath = "$zipPath.sha256"
-          if (-not (Test-Path $zipPath)) { throw "zip does not exist: $zipPath" }
-          if (-not (Test-Path $shaPath)) { throw "sha256 does not exist: $shaPath" }
-          if ((Get-Item $zipPath).Length -le 0) { throw "zip file is empty: $zipPath" }
-          Write-Host "Verified package: $zipPath"
-
-      - name: Upload package to repository release
-        shell: powershell
-        env:
-          RELEASE_TOKEN: ${{ secrets.RELEASE_TOKEN }}
-        run: |
-          $ErrorActionPreference = 'Stop'
-          $token = $env:RELEASE_TOKEN
-          if ([string]::IsNullOrWhiteSpace($token)) { $token = $env:GITHUB_TOKEN }
-          if ([string]::IsNullOrWhiteSpace($token)) { throw 'Missing release token. Configure RELEASE_TOKEN in repository secrets or ensure GITHUB_TOKEN is available.' }
-
-          $shortSha = $env:GITHUB_SHA.Substring(0, 10)
-          $version = if ($env:GITHUB_REF_TYPE -eq 'tag') { $env:GITHUB_REF_NAME } else { "build-$shortSha" }
-          $zipName = "$env:PACKAGE_BASENAME-$version.zip"
-          $sourceDir = Join-Path $env:RUNNER_TEMP 'chengnan-work'
-          $zipPath = Join-Path $sourceDir $zipName
-          $shaPath = "$zipPath.sha256"
-
-          $serverUrl = if ($env:GITHUB_SERVER_URL) { $env:GITHUB_SERVER_URL.TrimEnd('/') } else { 'https://git.luochen570.cn' }
-          $repo = $env:GITHUB_REPOSITORY
-          $apiBase = "$serverUrl/api/v1/repos/$repo"
-          $tagName = $version
-          $releaseName = if ($env:GITHUB_REF_TYPE -eq 'tag') { $env:GITHUB_REF_NAME } else { "chengnan $shortSha" }
-          $isPrerelease = if ($env:GITHUB_REF_TYPE -eq 'tag') { $false } else { $true }
-          $headers = @{ Authorization = "token $token"; Accept = 'application/json' }
-
-          $releasePayload = @{
-            tag_name = $tagName
-            target_commitish = $env:GITHUB_SHA
-            name = $releaseName
-            body = "Automated Windows x64 build from Gitea Actions.`n"
-            draft = $false
-            prerelease = $isPrerelease
-          } | ConvertTo-Json -Depth 5
-
-          try {
-            $release = Invoke-RestMethod -Method Post -Uri "$apiBase/releases" -Headers $headers -ContentType 'application/json' -Body $releasePayload
-          } catch {
-            $release = Invoke-RestMethod -Method Get -Uri "$apiBase/releases/tags/$tagName" -Headers $headers
-          }
-
-          function Remove-ExistingAsset([string]$assetName) {
-            $assets = Invoke-RestMethod -Method Get -Uri "$apiBase/releases/$($release.id)/assets" -Headers $headers
-            foreach ($asset in @($assets)) {
-              if ($asset.name -eq $assetName) {
-                Invoke-RestMethod -Method Delete -Uri "$apiBase/releases/assets/$($asset.id)" -Headers $headers | Out-Null
-              }
-            }
-          }
-
-          function Upload-Asset([string]$path) {
-            $name = Split-Path $path -Leaf
-            Remove-ExistingAsset $name
-            $uploadUrl = "$apiBase/releases/$($release.id)/assets?name=$([uri]::EscapeDataString($name))"
-            $responseFile = Join-Path $env:RUNNER_TEMP "gitea-upload-response.json"
-            $curl = Join-Path $env:SystemRoot 'System32\curl.exe'
-            $status = & $curl --silent --show-error --location `
-              --header "Authorization: token $token" `
-              --form "attachment=@$path;filename=$name" `
-              --write-out '%{http_code}' `
-              --output $responseFile `
-              $uploadUrl
-            if ($status -ne '200' -and $status -ne '201') {
-              Write-Error "Upload release asset failed, HTTP ${status}: $name"
-              if (Test-Path $responseFile) { Get-Content $responseFile }
-              exit 1
-            }
-            Write-Host "Uploaded release asset: $name"
-          }
-
-          Upload-Asset $zipPath
-          Upload-Asset $shaPath
-          Write-Host "Release assets uploaded to $serverUrl/$repo/releases/tag/$tagName"

.gitignore

@@ -0,0 +1,14 @@
+build/
+build-windows/
+build-wsl-windows/
+cmake-build-*/
+.qt/
+.qtc/
+CMakeUserPresets.json
+*.user
+*.suo
+*.vcxproj*
+*.sln
+*.exe
+*.dll
+*.pdb

CMakeLists.txt

@@ -1,39 +1,30 @@
 cmake_minimum_required(VERSION 3.16)
 
-project(chengnan VERSION 1.0.0 LANGUAGES CXX)
+project(QtOpenCVImageTool LANGUAGES CXX)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_AUTOMOC ON)
-set(CMAKE_AUTOUIC OFF)
-set(CMAKE_AUTORCC OFF)
+set(CMAKE_AUTORCC ON)
+set(CMAKE_AUTOUIC ON)
 
-find_package(Qt6 QUIET COMPONENTS Widgets)
-if (Qt6_FOUND)
-    qt_add_executable(chengnan
+find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets)
+find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Widgets)
+find_package(OpenCV REQUIRED)
+
+add_executable(QtOpenCVImageTool WIN32
     main.cpp
     MainWindow.h
     MainWindow.cpp
-    )
-    target_link_libraries(chengnan PRIVATE Qt6::Widgets)
-else()
-    find_package(Qt5 REQUIRED COMPONENTS Widgets)
-    add_executable(chengnan
-        main.cpp
-        MainWindow.h
-        MainWindow.cpp
-    )
-    target_link_libraries(chengnan PRIVATE Qt5::Widgets)
-endif()
-
-target_compile_definitions(chengnan PRIVATE
-    CHENGNAN_APP_VERSION="${PROJECT_VERSION}"
 )
 
-if (MSVC)
-    target_compile_options(chengnan PRIVATE /W4 /permissive-)
-else()
-    target_compile_options(chengnan PRIVATE -Wall -Wextra -Wpedantic)
-endif()
+target_link_libraries(QtOpenCVImageTool PRIVATE
+    Qt${QT_VERSION_MAJOR}::Widgets
+    ${OpenCV_LIBS}
+)
 
-install(TARGETS chengnan RUNTIME DESTINATION bin)
+target_include_directories(QtOpenCVImageTool PRIVATE ${OpenCV_INCLUDE_DIRS})
+
+if(QT_VERSION_MAJOR EQUAL 6)
+    qt_finalize_executable(QtOpenCVImageTool)
+endif()

MainWindow.cpp

@@ -1,413 +1,433 @@
 #include "MainWindow.h"
 
-#include <QAction>
-#include <QApplication>
+#include <QCheckBox>
 #include <QFileDialog>
 #include <QFileInfo>
-#include <QImageReader>
-#include <QImageWriter>
-#include <QKeySequence>
-#include <QMenuBar>
+#include <QGroupBox>
+#include <QHBoxLayout>
+#include <QImage>
+#include <QLabel>
 #include <QMessageBox>
-#include <QMouseEvent>
+#include <QPushButton>
+#include <QPixmap>
+#include <QScrollArea>
 #include <QSlider>
 #include <QStatusBar>
-#include <QToolBar>
+#include <QThread>
+#include <QVBoxLayout>
 
 #include <algorithm>
 #include <cmath>
 
-ImageLabel::ImageLabel(QWidget *parent)
-    : QLabel(parent)
+namespace
 {
-    setAlignment(Qt::AlignCenter);
-    setBackgroundRole(QPalette::Base);
-    setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);
-    setScaledContents(false);
-    setMinimumSize(320, 240);
-    setText(tr("打开一张图片开始查看"));
+QImage matToQImage(const cv::Mat &mat)
+{
+    if (mat.empty()) {
+        return {};
+    }
+
+    cv::Mat rgb;
+    if (mat.channels() == 1) {
+        cv::cvtColor(mat, rgb, cv::COLOR_GRAY2RGB);
+    } else if (mat.channels() == 3) {
+        cv::cvtColor(mat, rgb, cv::COLOR_BGR2RGB);
+    } else if (mat.channels() == 4) {
+        cv::cvtColor(mat, rgb, cv::COLOR_BGRA2RGBA);
+    } else {
+        return {};
+    }
+
+    const QImage::Format format = rgb.channels() == 4 ? QImage::Format_RGBA8888 : QImage::Format_RGB888;
+    return QImage(rgb.data, rgb.cols, rgb.rows, static_cast<int>(rgb.step), format).copy();
 }
 
-void ImageLabel::mouseDoubleClickEvent(QMouseEvent *event)
+cv::Mat rotateWithBounds(const cv::Mat &image, double angle)
 {
-    if (event->button() == Qt::LeftButton) {
-        Q_EMIT doubleClicked();
+    if (image.empty() || std::abs(angle) < 0.01) {
+        return image.clone();
     }
-    QLabel::mouseDoubleClickEvent(event);
+
+    const cv::Point2f center(image.cols / 2.0F, image.rows / 2.0F);
+    cv::Mat matrix = cv::getRotationMatrix2D(center, angle, 1.0);
+    const cv::Rect2f bounds = cv::RotatedRect(cv::Point2f(), image.size(), angle).boundingRect2f();
+    matrix.at<double>(0, 2) += bounds.width / 2.0 - image.cols / 2.0;
+    matrix.at<double>(1, 2) += bounds.height / 2.0 - image.rows / 2.0;
+
+    cv::Mat rotated;
+    const cv::Size outputSize(static_cast<int>(bounds.width), static_cast<int>(bounds.height));
+    cv::warpAffine(image, rotated, matrix, outputSize, cv::INTER_LINEAR, cv::BORDER_CONSTANT, cv::Scalar(30, 30, 30));
+    return rotated;
+}
+
+cv::Mat translateImage(const cv::Mat &image, int dx, int dy)
+{
+    if (image.empty() || (dx == 0 && dy == 0)) {
+        return image.clone();
+    }
+
+    cv::Mat translated;
+    cv::Mat matrix = (cv::Mat_<double>(2, 3) << 1, 0, dx, 0, 1, dy);
+    cv::warpAffine(image, translated, matrix, image.size(), cv::INTER_LINEAR, cv::BORDER_CONSTANT, cv::Scalar(30, 30, 30));
+    return translated;
+}
+
+cv::Mat extractTargets(const cv::Mat &image, int &targetCount)
+{
+    targetCount = 0;
+    if (image.empty()) {
+        return {};
+    }
+
+    cv::Mat gray;
+    cv::cvtColor(image, gray, cv::COLOR_BGR2GRAY);
+    cv::GaussianBlur(gray, gray, cv::Size(5, 5), 0);
+
+    cv::Mat binary;
+    cv::threshold(gray, binary, 0, 255, cv::THRESH_BINARY | cv::THRESH_OTSU);
+    if (cv::countNonZero(binary) > binary.rows * binary.cols / 2) {
+        cv::bitwise_not(binary, binary);
+    }
+
+    const cv::Mat kernel = cv::getStructuringElement(cv::MORPH_RECT, cv::Size(5, 5));
+    cv::morphologyEx(binary, binary, cv::MORPH_OPEN, kernel);
+    cv::morphologyEx(binary, binary, cv::MORPH_CLOSE, kernel);
+
+    std::vector<std::vector<cv::Point>> contours;
+    cv::findContours(binary, contours, cv::RETR_EXTERNAL, cv::CHAIN_APPROX_SIMPLE);
+
+    cv::Mat extracted = cv::Mat::zeros(image.size(), image.type());
+    image.copyTo(extracted, binary);
+
+    for (const auto &contour : contours) {
+        const double area = cv::contourArea(contour);
+        if (area < 300.0) {
+            continue;
+        }
+
+        ++targetCount;
+        cv::rectangle(extracted, cv::boundingRect(contour), cv::Scalar(0, 255, 0), 2);
+    }
+
+    return extracted;
+}
+
+QString classifyImage(const cv::Mat &image, int targetCount)
+{
+    if (image.empty()) {
+        return QStringLiteral("未载入图片");
+    }
+
+    cv::Scalar mean = cv::mean(image);
+    const double brightness = (mean[0] + mean[1] + mean[2]) / 3.0;
+    const QString light = brightness >= 170.0 ? QStringLiteral("偏亮")
+                        : brightness <= 85.0 ? QStringLiteral("偏暗")
+                                             : QStringLiteral("亮度适中");
+
+    QString color = QStringLiteral("颜色均衡");
+    if (mean[2] > mean[1] + 18.0 && mean[2] > mean[0] + 18.0) {
+        color = QStringLiteral("红色占优");
+    } else if (mean[1] > mean[2] + 18.0 && mean[1] > mean[0] + 18.0) {
+        color = QStringLiteral("绿色占优");
+    } else if (mean[0] > mean[2] + 18.0 && mean[0] > mean[1] + 18.0) {
+        color = QStringLiteral("蓝色占优");
+    }
+
+    return QStringLiteral("分类结果：%1，%2；目标数量：%3").arg(light, color).arg(targetCount);
+}
+
+class ImageProcessorWorker : public QObject
+{
+    Q_OBJECT
+
+public slots:
+    void process(const cv::Mat &source, const ProcessParams &params)
+    {
+        if (source.empty()) {
+            emit processed(cv::Mat(), QStringLiteral("未载入图片"));
+            return;
+        }
+
+        cv::Mat output = source.clone();
+
+        if (std::abs(params.scale - 1.0) > 0.001) {
+            cv::resize(output, output, cv::Size(), params.scale, params.scale, cv::INTER_LINEAR);
+        }
+
+        output = translateImage(output, params.translateX, params.translateY);
+        output = rotateWithBounds(output, params.angle);
+
+        int targetCount = 0;
+        if (params.extractTarget) {
+            output = extractTargets(output, targetCount);
+        } else {
+            cv::Mat gray;
+            cv::cvtColor(output, gray, cv::COLOR_BGR2GRAY);
+            cv::Mat binary;
+            cv::threshold(gray, binary, 0, 255, cv::THRESH_BINARY | cv::THRESH_OTSU);
+            std::vector<std::vector<cv::Point>> contours;
+            cv::findContours(binary, contours, cv::RETR_EXTERNAL, cv::CHAIN_APPROX_SIMPLE);
+            targetCount = static_cast<int>(std::count_if(contours.begin(), contours.end(), [](const auto &contour) {
+                return cv::contourArea(contour) >= 300.0;
+            }));
+        }
+
+        const QString classText = params.classifyImage ? classifyImage(output, targetCount) : QStringLiteral("处理完成");
+        emit processed(output, classText);
+    }
+
+signals:
+    void processed(const cv::Mat &image, const QString &classText);
+};
 }
 
 MainWindow::MainWindow(QWidget *parent)
     : QMainWindow(parent)
 {
-    createActions();
-    createMenus();
-    createToolbar();
-    createCentralWidget();
-    updateActions();
+    qRegisterMetaType<cv::Mat>("cv::Mat");
+    qRegisterMetaType<ProcessParams>("ProcessParams");
 
-    setWindowTitle(tr("chengnan 图片查看器"));
-    resize(1100, 720);
-    statusBar()->showMessage(tr("就绪"));
+    buildUi();
+
+    auto *worker = new ImageProcessorWorker;
+    workerThread = new QThread(this);
+    worker->moveToThread(workerThread);
+    connect(this, &MainWindow::processRequested, worker, &ImageProcessorWorker::process);
+    connect(worker, &ImageProcessorWorker::processed, this, &MainWindow::onProcessed);
+    connect(workerThread, &QThread::finished, worker, &QObject::deleteLater);
+    workerThread->start();
 }
 
-void MainWindow::createActions()
+MainWindow::~MainWindow()
 {
-    openAction_ = new QAction(tr("打开(&O)"), this);
-    openAction_->setShortcut(QKeySequence::Open);
-    connect(openAction_, &QAction::triggered, this, &MainWindow::openImage);
-
-    saveAction_ = new QAction(tr("保存(&S)"), this);
-    saveAction_->setShortcut(QKeySequence::Save);
-    connect(saveAction_, &QAction::triggered, this, &MainWindow::saveImage);
-
-    saveAsAction_ = new QAction(tr("另存为(&A)"), this);
-    saveAsAction_->setShortcut(QKeySequence::SaveAs);
-    connect(saveAsAction_, &QAction::triggered, this, &MainWindow::saveImageAs);
-
-    exitAction_ = new QAction(tr("退出(&X)"), this);
-    exitAction_->setShortcut(QKeySequence::Quit);
-    connect(exitAction_, &QAction::triggered, this, &QWidget::close);
-
-    zoomInAction_ = new QAction(tr("放大"), this);
-    zoomInAction_->setShortcut(QKeySequence::ZoomIn);
-    connect(zoomInAction_, &QAction::triggered, this, &MainWindow::zoomIn);
-
-    zoomOutAction_ = new QAction(tr("缩小"), this);
-    zoomOutAction_->setShortcut(QKeySequence::ZoomOut);
-    connect(zoomOutAction_, &QAction::triggered, this, &MainWindow::zoomOut);
-
-    fitAction_ = new QAction(tr("适配窗口"), this);
-    fitAction_->setShortcut(Qt::CTRL | Qt::Key_F);
-    connect(fitAction_, &QAction::triggered, this, &MainWindow::fitToWindow);
-
-    resetAction_ = new QAction(tr("原始大小"), this);
-    resetAction_->setShortcut(Qt::CTRL | Qt::Key_0);
-    connect(resetAction_, &QAction::triggered, this, &MainWindow::resetView);
-
-    rotateLeftAction_ = new QAction(tr("左旋 90°"), this);
-    connect(rotateLeftAction_, &QAction::triggered, this, &MainWindow::rotateLeft);
-
-    rotateRightAction_ = new QAction(tr("右旋 90°"), this);
-    connect(rotateRightAction_, &QAction::triggered, this, &MainWindow::rotateRight);
-
-    flipHorizontalAction_ = new QAction(tr("水平翻转"), this);
-    connect(flipHorizontalAction_, &QAction::triggered, this, &MainWindow::flipHorizontal);
-
-    flipVerticalAction_ = new QAction(tr("垂直翻转"), this);
-    connect(flipVerticalAction_, &QAction::triggered, this, &MainWindow::flipVertical);
-
-    grayscaleAction_ = new QAction(tr("灰度化"), this);
-    connect(grayscaleAction_, &QAction::triggered, this, &MainWindow::grayscale);
-
-    invertAction_ = new QAction(tr("反色"), this);
-    connect(invertAction_, &QAction::triggered, this, &MainWindow::invertColors);
+    if (workerThread) {
+        workerThread->quit();
+        workerThread->wait();
+    }
 }
 
-void MainWindow::createMenus()
+void MainWindow::buildUi()
 {
-    QMenu *fileMenu = menuBar()->addMenu(tr("文件(&F)"));
-    fileMenu->addAction(openAction_);
-    fileMenu->addAction(saveAction_);
-    fileMenu->addAction(saveAsAction_);
-    fileMenu->addSeparator();
-    fileMenu->addAction(exitAction_);
+    setWindowTitle(QStringLiteral("Qt + OpenCV 图像显示与处理"));
 
-    QMenu *viewMenu = menuBar()->addMenu(tr("查看(&V)"));
-    viewMenu->addAction(zoomInAction_);
-    viewMenu->addAction(zoomOutAction_);
-    viewMenu->addAction(fitAction_);
-    viewMenu->addAction(resetAction_);
+    auto *central = new QWidget(this);
+    auto *rootLayout = new QVBoxLayout(central);
 
-    QMenu *processMenu = menuBar()->addMenu(tr("处理(&P)"));
-    processMenu->addAction(rotateLeftAction_);
-    processMenu->addAction(rotateRightAction_);
-    processMenu->addAction(flipHorizontalAction_);
-    processMenu->addAction(flipVerticalAction_);
-    processMenu->addSeparator();
-    processMenu->addAction(grayscaleAction_);
-    processMenu->addAction(invertAction_);
-}
+    auto *buttonLayout = new QHBoxLayout;
+    openButton = new QPushButton(QStringLiteral("打开图片"));
+    saveButton = new QPushButton(QStringLiteral("保存图片"));
+    saveAsButton = new QPushButton(QStringLiteral("另存图片"));
+    resetButton = new QPushButton(QStringLiteral("重置处理"));
+    buttonLayout->addWidget(openButton);
+    buttonLayout->addWidget(saveButton);
+    buttonLayout->addWidget(saveAsButton);
+    buttonLayout->addStretch();
+    buttonLayout->addWidget(resetButton);
 
-void MainWindow::createToolbar()
-{
-    QToolBar *toolbar = addToolBar(tr("主工具栏"));
-    toolbar->setMovable(false);
-    toolbar->addAction(openAction_);
-    toolbar->addAction(saveAction_);
-    toolbar->addSeparator();
-    toolbar->addAction(zoomOutAction_);
+    auto *controlBox = new QGroupBox(QStringLiteral("图像处理"));
+    auto *controlLayout = new QHBoxLayout(controlBox);
 
-    zoomSlider_ = new QSlider(Qt::Horizontal, this);
-    zoomSlider_->setRange(10, 400);
-    zoomSlider_->setValue(100);
-    zoomSlider_->setFixedWidth(180);
-    zoomSlider_->setToolTip(tr("缩放比例"));
-    connect(zoomSlider_, &QSlider::valueChanged, this, &MainWindow::updateZoomFromSlider);
-    toolbar->addWidget(zoomSlider_);
+    scaleSlider = new QSlider(Qt::Horizontal);
+    scaleSlider->setRange(25, 200);
+    scaleSlider->setValue(100);
+    rotateSlider = new QSlider(Qt::Horizontal);
+    rotateSlider->setRange(-180, 180);
+    translateXSlider = new QSlider(Qt::Horizontal);
+    translateXSlider->setRange(-200, 200);
+    translateYSlider = new QSlider(Qt::Horizontal);
+    translateYSlider->setRange(-200, 200);
+    extractCheckBox = new QCheckBox(QStringLiteral("目标提取"));
+    classifyCheckBox = new QCheckBox(QStringLiteral("图像分类"));
 
-    toolbar->addAction(zoomInAction_);
-    toolbar->addAction(fitAction_);
-    toolbar->addSeparator();
-    toolbar->addAction(rotateLeftAction_);
-    toolbar->addAction(rotateRightAction_);
-    toolbar->addAction(grayscaleAction_);
-    toolbar->addAction(invertAction_);
-}
+    auto addSlider = [controlLayout](const QString &name, QSlider *slider) {
+        auto *box = new QWidget;
+        auto *layout = new QVBoxLayout(box);
+        layout->setContentsMargins(0, 0, 0, 0);
+        layout->addWidget(new QLabel(name));
+        layout->addWidget(slider);
+        controlLayout->addWidget(box, 1);
+    };
 
-void MainWindow::createCentralWidget()
-{
-    imageLabel_ = new ImageLabel(this);
-    connect(imageLabel_, &ImageLabel::doubleClicked, this, &MainWindow::fitToWindow);
+    addSlider(QStringLiteral("缩放"), scaleSlider);
+    addSlider(QStringLiteral("旋转"), rotateSlider);
+    addSlider(QStringLiteral("水平平移"), translateXSlider);
+    addSlider(QStringLiteral("垂直平移"), translateYSlider);
+    controlLayout->addWidget(extractCheckBox);
+    controlLayout->addWidget(classifyCheckBox);
 
-    scrollArea_ = new QScrollArea(this);
-    scrollArea_->setBackgroundRole(QPalette::Dark);
-    scrollArea_->setWidget(imageLabel_);
-    scrollArea_->setWidgetResizable(true);
-    setCentralWidget(scrollArea_);
+    auto *imageLayout = new QHBoxLayout;
+    originalLabel = new QLabel(QStringLiteral("原图"));
+    resultLabel = new QLabel(QStringLiteral("处理后图像"));
+    originalLabel->setAlignment(Qt::AlignCenter);
+    resultLabel->setAlignment(Qt::AlignCenter);
+    originalLabel->setMinimumSize(480, 420);
+    resultLabel->setMinimumSize(480, 420);
+    originalLabel->setStyleSheet("QLabel { background:#202124; color:white; border:1px solid #555; }");
+    resultLabel->setStyleSheet("QLabel { background:#202124; color:white; border:1px solid #555; }");
+
+    auto *originalScroll = new QScrollArea;
+    auto *resultScroll = new QScrollArea;
+    originalScroll->setWidget(originalLabel);
+    resultScroll->setWidget(resultLabel);
+    originalScroll->setWidgetResizable(true);
+    resultScroll->setWidgetResizable(true);
+
+    imageLayout->addWidget(originalScroll, 1);
+    imageLayout->addWidget(resultScroll, 1);
+
+    rootLayout->addLayout(buttonLayout);
+    rootLayout->addWidget(controlBox);
+    rootLayout->addLayout(imageLayout, 1);
+    setCentralWidget(central);
+
+    statusLabel = new QLabel(QStringLiteral("请打开一张图片"));
+    statusBar()->addWidget(statusLabel, 1);
+
+    connect(openButton, &QPushButton::clicked, this, &MainWindow::openImage);
+    connect(saveButton, &QPushButton::clicked, this, &MainWindow::saveImage);
+    connect(saveAsButton, &QPushButton::clicked, this, &MainWindow::saveImageAs);
+    connect(resetButton, &QPushButton::clicked, this, &MainWindow::resetParams);
+
+    connect(scaleSlider, &QSlider::valueChanged, this, &MainWindow::scheduleProcessing);
+    connect(rotateSlider, &QSlider::valueChanged, this, &MainWindow::scheduleProcessing);
+    connect(translateXSlider, &QSlider::valueChanged, this, &MainWindow::scheduleProcessing);
+    connect(translateYSlider, &QSlider::valueChanged, this, &MainWindow::scheduleProcessing);
+    connect(extractCheckBox, &QCheckBox::toggled, this, &MainWindow::scheduleProcessing);
+    connect(classifyCheckBox, &QCheckBox::toggled, this, &MainWindow::scheduleProcessing);
 }
 
 void MainWindow::openImage()
 {
     const QString fileName = QFileDialog::getOpenFileName(
         this,
-        tr("打开图片"),
+        QStringLiteral("打开图片"),
         QString(),
-        tr("图片文件 (*.png *.jpg *.jpeg *.bmp *.gif *.webp);;所有文件 (*.*)"));
+        QStringLiteral("Images (*.png *.jpg *.jpeg *.bmp *.tif *.tiff)"));
 
     if (fileName.isEmpty()) {
         return;
     }
 
-    QImageReader reader(fileName);
-    reader.setAutoTransform(true);
-    const QImage image = reader.read();
-    if (image.isNull()) {
-        QMessageBox::warning(this, tr("打开失败"), tr("无法读取图片：%1").arg(reader.errorString()));
+    originalImage = cv::imread(fileName.toLocal8Bit().constData(), cv::IMREAD_COLOR);
+    if (originalImage.empty()) {
+        QMessageBox::warning(this, QStringLiteral("打开失败"), QStringLiteral("无法读取该图片文件。"));
         return;
     }
 
-    setImage(image, fileName);
+    savePath.clear();
+    updateOriginalView();
+    scheduleProcessing();
+    statusLabel->setText(QStringLiteral("已打开：%1").arg(QFileInfo(fileName).fileName()));
 }
 
 void MainWindow::saveImage()
 {
-    if (!ensureImageLoaded(tr("保存"))) {
-        return;
-    }
-
-    if (currentPath_.isEmpty()) {
+    if (savePath.isEmpty()) {
         saveImageAs();
         return;
     }
 
-    writeImageToPath(currentPath_);
+    if (writeResultToFile(savePath)) {
+        statusLabel->setText(QStringLiteral("已保存：%1").arg(QFileInfo(savePath).fileName()));
+    }
 }
 
 void MainWindow::saveImageAs()
 {
-    if (!ensureImageLoaded(tr("另存为"))) {
+    if (resultImage.empty()) {
+        QMessageBox::information(this, QStringLiteral("提示"), QStringLiteral("请先打开并处理图片。"));
         return;
     }
 
     const QString fileName = QFileDialog::getSaveFileName(
         this,
-        tr("另存为"),
-        currentPath_.isEmpty() ? QStringLiteral("chengnan.png") : currentPath_,
-        tr("PNG 图片 (*.png);;JPEG 图片 (*.jpg *.jpeg);;BMP 图片 (*.bmp);;所有文件 (*.*)"));
+        QStringLiteral("另存图片"),
+        QStringLiteral("processed.png"),
+        QStringLiteral("PNG (*.png);;JPEG (*.jpg *.jpeg);;BMP (*.bmp);;TIFF (*.tif *.tiff)"));
 
-    if (!fileName.isEmpty()) {
-        writeImageToPath(fileName);
-    }
-}
-
-void MainWindow::zoomIn()
-{
-    setZoomFactor(zoomFactor_ * 1.25);
-}
-
-void MainWindow::zoomOut()
-{
-    setZoomFactor(zoomFactor_ / 1.25);
-}
-
-void MainWindow::fitToWindow()
-{
-    if (!ensureImageLoaded(tr("适配窗口"))) {
+    if (fileName.isEmpty()) {
         return;
     }
 
-    const QSize viewportSize = scrollArea_->viewport()->size();
-    const QSize imageSize = currentImage_.size();
-    if (imageSize.isEmpty()) {
+    if (writeResultToFile(fileName)) {
+        savePath = fileName;
+        statusLabel->setText(QStringLiteral("已另存为：%1").arg(QFileInfo(fileName).fileName()));
+    }
+}
+
+void MainWindow::resetParams()
+{
+    scaleSlider->setValue(100);
+    rotateSlider->setValue(0);
+    translateXSlider->setValue(0);
+    translateYSlider->setValue(0);
+    extractCheckBox->setChecked(false);
+    classifyCheckBox->setChecked(false);
+    scheduleProcessing();
+}
+
+void MainWindow::scheduleProcessing()
+{
+    if (originalImage.empty()) {
         return;
     }
 
-    const double xRatio = static_cast<double>(viewportSize.width()) / imageSize.width();
-    const double yRatio = static_cast<double>(viewportSize.height()) / imageSize.height();
-    setZoomFactor(std::min(xRatio, yRatio));
+    emit processRequested(originalImage.clone(), currentParams());
 }
 
-void MainWindow::resetView()
+void MainWindow::onProcessed(const cv::Mat &image, const QString &classText)
 {
-    setZoomFactor(1.0);
+    resultImage = image.clone();
+    updateResultView();
+    statusLabel->setText(classText);
 }
 
-void MainWindow::rotateLeft()
+void MainWindow::updateOriginalView()
 {
-    if (!ensureImageLoaded(tr("旋转"))) {
-        return;
-    }
-    QTransform transform;
-    transform.rotate(-90);
-    applyTransformedImage(currentImage_.transformed(transform, Qt::SmoothTransformation));
+    setImageOnLabel(originalLabel, originalImage);
 }
 
-void MainWindow::rotateRight()
+void MainWindow::updateResultView()
 {
-    if (!ensureImageLoaded(tr("旋转"))) {
-        return;
-    }
-    QTransform transform;
-    transform.rotate(90);
-    applyTransformedImage(currentImage_.transformed(transform, Qt::SmoothTransformation));
+    setImageOnLabel(resultLabel, resultImage);
 }
 
-void MainWindow::flipHorizontal()
+void MainWindow::setImageOnLabel(QLabel *label, const cv::Mat &mat)
 {
-    if (!ensureImageLoaded(tr("翻转"))) {
-        return;
-    }
-    applyTransformedImage(currentImage_.mirrored(true, false));
-}
-
-void MainWindow::flipVertical()
-{
-    if (!ensureImageLoaded(tr("翻转"))) {
-        return;
-    }
-    applyTransformedImage(currentImage_.mirrored(false, true));
-}
-
-void MainWindow::grayscale()
-{
-    if (!ensureImageLoaded(tr("灰度化"))) {
-        return;
-    }
-    applyTransformedImage(currentImage_.convertToFormat(QImage::Format_Grayscale8));
-}
-
-void MainWindow::invertColors()
-{
-    if (!ensureImageLoaded(tr("反色"))) {
-        return;
-    }
-    QImage image = currentImage_.convertToFormat(QImage::Format_ARGB32);
-    image.invertPixels(QImage::InvertRgb);
-    applyTransformedImage(image);
-}
-
-void MainWindow::updateZoomFromSlider(int value)
-{
-    const double factor = static_cast<double>(value) / 100.0;
-    if (std::abs(factor - zoomFactor_) > 0.001) {
-        zoomFactor_ = factor;
-        updateImageView();
-    }
-}
-
-void MainWindow::setImage(const QImage &image, const QString &path)
-{
-    currentImage_ = image.convertToFormat(QImage::Format_ARGB32);
-    currentPath_ = path;
-    setZoomFactor(1.0);
-    updateActions();
-
-    const QFileInfo info(path);
-    setWindowTitle(path.isEmpty()
-        ? tr("chengnan 图片查看器")
-        : tr("%1 - chengnan 图片查看器").arg(info.fileName()));
-    statusBar()->showMessage(tr("已加载：%1 × %2").arg(currentImage_.width()).arg(currentImage_.height()), 5000);
-}
-
-void MainWindow::updateImageView()
-{
-    if (currentImage_.isNull()) {
-        imageLabel_->setPixmap(QPixmap());
-        imageLabel_->setText(tr("打开一张图片开始查看"));
+    const QImage image = matToQImage(mat);
+    if (image.isNull()) {
+        label->setText(QStringLiteral("无图像"));
         return;
     }
 
-    const QSize scaledSize = currentImage_.size() * zoomFactor_;
-    const QPixmap pixmap = QPixmap::fromImage(currentImage_).scaled(
-        scaledSize,
-        Qt::KeepAspectRatio,
-        Qt::SmoothTransformation);
-
-    imageLabel_->setText(QString());
-    imageLabel_->setPixmap(pixmap);
-    imageLabel_->resize(pixmap.size());
-
-    if (zoomSlider_->value() != static_cast<int>(zoomFactor_ * 100.0)) {
-        zoomSlider_->blockSignals(true);
-        zoomSlider_->setValue(static_cast<int>(zoomFactor_ * 100.0));
-        zoomSlider_->blockSignals(false);
-    }
-
-    statusBar()->showMessage(tr("缩放：%1%").arg(static_cast<int>(zoomFactor_ * 100.0)));
+    label->setPixmap(QPixmap::fromImage(image).scaled(label->size(), Qt::KeepAspectRatio, Qt::SmoothTransformation));
 }
 
-void MainWindow::setZoomFactor(double factor)
+ProcessParams MainWindow::currentParams() const
 {
-    zoomFactor_ = std::clamp(factor, 0.10, 4.00);
-    updateImageView();
+    ProcessParams params;
+    params.scale = scaleSlider->value() / 100.0;
+    params.angle = rotateSlider->value();
+    params.translateX = translateXSlider->value();
+    params.translateY = translateYSlider->value();
+    params.extractTarget = extractCheckBox->isChecked();
+    params.classifyImage = classifyCheckBox->isChecked();
+    return params;
 }
 
-void MainWindow::applyTransformedImage(const QImage &image)
+bool MainWindow::writeResultToFile(const QString &fileName)
 {
-    currentImage_ = image.convertToFormat(QImage::Format_ARGB32);
-    updateImageView();
-    updateActions();
-    statusBar()->showMessage(tr("处理完成，可保存结果"), 3000);
-}
-
-void MainWindow::updateActions()
-{
-    const bool hasImage = !currentImage_.isNull();
-    saveAction_->setEnabled(hasImage);
-    saveAsAction_->setEnabled(hasImage);
-    zoomInAction_->setEnabled(hasImage);
-    zoomOutAction_->setEnabled(hasImage);
-    fitAction_->setEnabled(hasImage);
-    resetAction_->setEnabled(hasImage);
-    rotateLeftAction_->setEnabled(hasImage);
-    rotateRightAction_->setEnabled(hasImage);
-    flipHorizontalAction_->setEnabled(hasImage);
-    flipVerticalAction_->setEnabled(hasImage);
-    grayscaleAction_->setEnabled(hasImage);
-    invertAction_->setEnabled(hasImage);
-    zoomSlider_->setEnabled(hasImage);
-}
-
-bool MainWindow::ensureImageLoaded(const QString &actionName) const
-{
-    if (!currentImage_.isNull()) {
-        return true;
+    if (resultImage.empty()) {
+        QMessageBox::information(this, QStringLiteral("提示"), QStringLiteral("没有可保存的处理结果。"));
+        return false;
     }
-
-    QMessageBox::information(nullptr, actionName, tr("请先打开一张图片。"));
-    return false;
-}
 
-bool MainWindow::writeImageToPath(const QString &path)
-{
-    QImageWriter writer(path);
-    if (!writer.write(currentImage_)) {
-        QMessageBox::warning(this, tr("保存失败"), tr("无法保存图片：%1").arg(writer.errorString()));
+    if (!cv::imwrite(fileName.toLocal8Bit().constData(), resultImage)) {
+        QMessageBox::warning(this, QStringLiteral("保存失败"), QStringLiteral("无法写入该图片文件。"));
         return false;
     }
 
-    currentPath_ = path;
-    setWindowTitle(tr("%1 - chengnan 图片查看器").arg(QFileInfo(path).fileName()));
-    statusBar()->showMessage(tr("已保存：%1").arg(path), 5000);
     return true;
 }
+
+#include "MainWindow.moc"

MainWindow.h

@@ -1,90 +1,76 @@
 #ifndef MAINWINDOW_H
 #define MAINWINDOW_H
 
-#include <QImage>
-#include <QLabel>
 #include <QMainWindow>
-#include <QPixmap>
-#include <QScrollArea>
-#include <QString>
+#include <QMetaType>
 
-class QAction;
-class QMenu;
+#include <opencv2/opencv.hpp>
+
+class QLabel;
 class QPushButton;
 class QSlider;
+class QCheckBox;
+class QThread;
 
-class ImageLabel final : public QLabel
+struct ProcessParams
 {
-    Q_OBJECT
-
-public:
-    explicit ImageLabel(QWidget *parent = nullptr);
-
-Q_SIGNALS:
-    void doubleClicked();
-
-protected:
-    void mouseDoubleClickEvent(QMouseEvent *event) override;
+    double scale = 1.0;
+    int translateX = 0;
+    int translateY = 0;
+    double angle = 0.0;
+    bool extractTarget = false;
+    bool classifyImage = false;
 };
 
-class MainWindow final : public QMainWindow
+Q_DECLARE_METATYPE(cv::Mat)
+Q_DECLARE_METATYPE(ProcessParams)
+
+class MainWindow : public QMainWindow
 {
     Q_OBJECT
 
 public:
     explicit MainWindow(QWidget *parent = nullptr);
+    ~MainWindow() override;
 
-private Q_SLOTS:
+signals:
+    void processRequested(const cv::Mat &image, const ProcessParams &params);
+
+private slots:
     void openImage();
     void saveImage();
     void saveImageAs();
-    void zoomIn();
-    void zoomOut();
-    void fitToWindow();
-    void resetView();
-    void rotateLeft();
-    void rotateRight();
-    void flipHorizontal();
-    void flipVertical();
-    void grayscale();
-    void invertColors();
-    void updateZoomFromSlider(int value);
+    void resetParams();
+    void scheduleProcessing();
+    void onProcessed(const cv::Mat &image, const QString &classText);
 
 private:
-    void createActions();
-    void createMenus();
-    void createToolbar();
-    void createCentralWidget();
-    void setImage(const QImage &image, const QString &path = QString());
-    void updateImageView();
-    void setZoomFactor(double factor);
-    void applyTransformedImage(const QImage &image);
-    void updateActions();
-    bool ensureImageLoaded(const QString &actionName) const;
-    bool writeImageToPath(const QString &path);
+    void buildUi();
+    void updateOriginalView();
+    void updateResultView();
+    void setImageOnLabel(QLabel *label, const cv::Mat &mat);
+    ProcessParams currentParams() const;
+    bool writeResultToFile(const QString &fileName);
 
-    ImageLabel *imageLabel_ = nullptr;
-    QScrollArea *scrollArea_ = nullptr;
-    QSlider *zoomSlider_ = nullptr;
+    QLabel *originalLabel = nullptr;
+    QLabel *resultLabel = nullptr;
+    QLabel *statusLabel = nullptr;
+    QPushButton *openButton = nullptr;
+    QPushButton *saveButton = nullptr;
+    QPushButton *saveAsButton = nullptr;
+    QPushButton *resetButton = nullptr;
+    QSlider *scaleSlider = nullptr;
+    QSlider *rotateSlider = nullptr;
+    QSlider *translateXSlider = nullptr;
+    QSlider *translateYSlider = nullptr;
+    QCheckBox *extractCheckBox = nullptr;
+    QCheckBox *classifyCheckBox = nullptr;
 
-    QImage currentImage_;
-    QString currentPath_;
-    double zoomFactor_ = 1.0;
+    cv::Mat originalImage;
+    cv::Mat resultImage;
+    QString savePath;
 
-    QAction *openAction_ = nullptr;
-    QAction *saveAction_ = nullptr;
-    QAction *saveAsAction_ = nullptr;
-    QAction *exitAction_ = nullptr;
-    QAction *zoomInAction_ = nullptr;
-    QAction *zoomOutAction_ = nullptr;
-    QAction *fitAction_ = nullptr;
-    QAction *resetAction_ = nullptr;
-    QAction *rotateLeftAction_ = nullptr;
-    QAction *rotateRightAction_ = nullptr;
-    QAction *flipHorizontalAction_ = nullptr;
-    QAction *flipVerticalAction_ = nullptr;
-    QAction *grayscaleAction_ = nullptr;
-    QAction *invertAction_ = nullptr;
+    QThread *workerThread = nullptr;
 };
 
-#endif // MAINWINDOW_H
+#endif

build-windows.ps1

@@ -1,100 +0,0 @@
-param(
-    [Parameter(Mandatory = $true)]
-    [string]$QtPrefix,
-
-    [string]$BuildDir = "build-windows",
-    [string]$DistDir = "dist-windows\chengnan",
-    [string]$Generator = "Visual Studio 17 2022",
-    [string]$Arch = "x64",
-    [ValidateSet("Debug", "Release", "RelWithDebInfo", "MinSizeRel")]
-    [string]$Config = "Release"
-)
-
-$ErrorActionPreference = "Stop"
-
-function Resolve-FullPath([string]$PathValue) {
-    if ([System.IO.Path]::IsPathRooted($PathValue)) {
-        return [System.IO.Path]::GetFullPath($PathValue)
-    }
-    return [System.IO.Path]::GetFullPath((Join-Path (Get-Location) $PathValue))
-}
-
-function Require-Command([string]$Name) {
-    $command = Get-Command $Name -ErrorAction SilentlyContinue
-    if (-not $command) {
-        throw "找不到命令：$Name。请先安装并加入 PATH。"
-    }
-    return $command.Source
-}
-
-$ProjectDir = Split-Path -Parent $MyInvocation.MyCommand.Path
-Set-Location $ProjectDir
-
-$QtPrefix = Resolve-FullPath $QtPrefix
-$BuildPath = Resolve-FullPath $BuildDir
-$DistPath = Resolve-FullPath $DistDir
-$QtBin = Join-Path $QtPrefix "bin"
-$WinDeployQt = Join-Path $QtBin "windeployqt.exe"
-
-if (-not (Test-Path $QtPrefix)) {
-    throw "QtPrefix 不存在：$QtPrefix"
-}
-
-if (-not (Test-Path $WinDeployQt)) {
-    throw "找不到 windeployqt：$WinDeployQt。请确认 -QtPrefix 指向 Qt 套件目录，例如 C:\Qt\6.7.2\msvc2019_64。"
-}
-
-Require-Command "cmake" | Out-Null
-
-$env:PATH = "$QtBin;$env:PATH"
-$env:CMAKE_PREFIX_PATH = $QtPrefix
-
-Write-Host "== chengnan Windows 构建 ==" -ForegroundColor Cyan
-Write-Host "项目目录：$ProjectDir"
-Write-Host "Qt 目录：$QtPrefix"
-Write-Host "构建目录：$BuildPath"
-Write-Host "发布目录：$DistPath"
-Write-Host "生成器：$Generator"
-Write-Host "配置：$Config"
-
-$configureArgs = @(
-    "-S", $ProjectDir,
-    "-B", $BuildPath,
-    "-G", $Generator,
-    "-DCMAKE_PREFIX_PATH=$QtPrefix"
-)
-
-if ($Generator -like "Visual Studio*") {
-    $configureArgs += @("-A", $Arch)
-} else {
-    $configureArgs += "-DCMAKE_BUILD_TYPE=$Config"
-}
-
-Write-Host "`n== 配置 CMake ==" -ForegroundColor Cyan
-& cmake @configureArgs
-
-Write-Host "`n== 编译 ==" -ForegroundColor Cyan
-& cmake --build $BuildPath --config $Config --parallel
-
-$ExeCandidates = @(
-    (Join-Path $BuildPath "$Config\chengnan.exe"),
-    (Join-Path $BuildPath "chengnan.exe")
-)
-$ExePath = $ExeCandidates | Where-Object { Test-Path $_ } | Select-Object -First 1
-if (-not $ExePath) {
-    throw "构建完成但找不到 chengnan.exe。已检查：$($ExeCandidates -join ', ')"
-}
-
-Write-Host "`n== 准备发布目录 ==" -ForegroundColor Cyan
-if (Test-Path $DistPath) {
-    Remove-Item -Recurse -Force $DistPath
-}
-New-Item -ItemType Directory -Force -Path $DistPath | Out-Null
-Copy-Item $ExePath $DistPath
-
-Write-Host "`n== 收集 Qt 运行库 ==" -ForegroundColor Cyan
-$DistExe = Join-Path $DistPath "chengnan.exe"
-& $WinDeployQt --release --no-translations $DistExe
-
-Write-Host "`n构建完成：$DistExe" -ForegroundColor Green
-Write-Host "请整体复制目录：$DistPath"

build_windows.bat

@@ -0,0 +1,46 @@
+@echo off
+setlocal
+
+rem Usage:
+rem   build_windows.bat C:\Qt\6.6.0\msvc2019_64 C:\opencv\build\x64\vc16\lib "Visual Studio 17 2022"
+rem   build_windows.bat C:\Qt\6.6.0\mingw_64 C:\opencv-mingw\install "MinGW Makefiles"
+
+if "%~1"=="" (
+    echo Usage: %~nx0 ^<QtDir^> ^<OpenCV_DIR^> [CMakeGenerator]
+    echo Example MSVC : %~nx0 C:\Qt\6.6.0\msvc2019_64 C:\opencv\build\x64\vc16\lib "Visual Studio 17 2022"
+    echo Example MinGW: %~nx0 C:\Qt\6.6.0\mingw_64 C:\opencv-mingw\install "MinGW Makefiles"
+    exit /b 1
+)
+
+if "%~2"=="" (
+    echo Missing OpenCV_DIR.
+    exit /b 1
+)
+
+set QT_DIR=%~1
+set OPENCV_DIR=%~2
+set GENERATOR=%~3
+
+if "%GENERATOR%"=="" (
+    set GENERATOR=Visual Studio 17 2022
+)
+
+if not exist build-windows (
+    mkdir build-windows
+)
+
+if /I "%GENERATOR%"=="MinGW Makefiles" (
+    cmake -S . -B build-windows -G "%GENERATOR%" -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="%QT_DIR%" -DOpenCV_DIR="%OPENCV_DIR%"
+) else (
+    cmake -S . -B build-windows -G "%GENERATOR%" -A x64 -DCMAKE_PREFIX_PATH="%QT_DIR%" -DOpenCV_DIR="%OPENCV_DIR%"
+)
+
+if errorlevel 1 exit /b %errorlevel%
+
+cmake --build build-windows --config Release
+if errorlevel 1 exit /b %errorlevel%
+
+echo.
+echo Build finished.
+echo For MSVC, check: build-windows\Release\QtOpenCVImageTool.exe
+echo For MinGW, check: build-windows\QtOpenCVImageTool.exe

build_wsl_windows.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+if ! command -v x86_64-w64-mingw32-g++ >/dev/null 2>&1; then
+    echo "Missing x86_64-w64-mingw32-g++."
+    echo "Install it in WSL with: sudo apt install mingw-w64"
+    exit 1
+fi
+
+if [[ "${QT_MINGW_PREFIX:-}" == "" ]]; then
+    echo "Missing QT_MINGW_PREFIX."
+    echo "Example: export QT_MINGW_PREFIX=/opt/mxe/usr/x86_64-w64-mingw32.shared/qt6"
+    exit 1
+fi
+
+if [[ "${OpenCV_DIR:-}" == "" ]]; then
+    echo "Missing OpenCV_DIR."
+    echo "Example: export OpenCV_DIR=/opt/mxe/usr/x86_64-w64-mingw32.shared/lib/cmake/opencv4"
+    exit 1
+fi
+
+cmake -S . -B build-wsl-windows \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_TOOLCHAIN_FILE=cmake/toolchains/mingw64.cmake \
+    -DCMAKE_PREFIX_PATH="${QT_MINGW_PREFIX}" \
+    -DOpenCV_DIR="${OpenCV_DIR}"
+
+cmake --build build-wsl-windows --config Release
+
+echo "Windows executable should be under build-wsl-windows/."

cmake/toolchains/mingw64.cmake

@@ -0,0 +1,11 @@
+set(CMAKE_SYSTEM_NAME Windows)
+set(CMAKE_SYSTEM_PROCESSOR x86_64)
+
+set(CMAKE_C_COMPILER x86_64-w64-mingw32-gcc)
+set(CMAKE_CXX_COMPILER x86_64-w64-mingw32-g++)
+set(CMAKE_RC_COMPILER x86_64-w64-mingw32-windres)
+
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)

main.cpp

@@ -5,12 +5,10 @@
 int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);
-    QApplication::setApplicationName(QStringLiteral("chengnan"));
-    QApplication::setApplicationVersion(QStringLiteral(CHENGNAN_APP_VERSION));
-    QApplication::setOrganizationName(QStringLiteral("luochen570"));
 
     MainWindow window;
+    window.resize(1180, 760);
     window.show();
 
-    return QApplication::exec();
+    return app.exec();
 }

readme.md

@@ -1,149 +1,259 @@
-# chengnan
+# Qt + OpenCV 图像显示与处理
 
-项目链接：<https://git.luochen570.cn/luochen570/chengnan>
+本工程使用 Qt Widgets 设计界面，使用 OpenCV 完成图像处理。程序支持打开图片、保存图片、另存图片，支持缩放、平移、旋转，并提供目标提取和简单图像分类功能。图像显示使用 Qt 的 `QLabel`/`QWidget`，没有使用 `cv::imshow`。
 
-`chengnan` 是一个轻量级 Windows 图片查看器 / 简单图片处理工具，使用 **Qt Widgets + CMake + C++17** 开发。
+## 文件说明
+
+- `CMakeLists.txt`：CMake 工程配置。
+- `main.cpp`：程序入口。
+- `MainWindow.h`：主窗口类和处理参数声明。
+- `MainWindow.cpp`：界面、图像读写、Qt 线程和 OpenCV 处理实现。
 
 ## 功能
 
-当前实现：
+- 打开图片：读取 `png/jpg/bmp/tif` 等常见格式。
+- 保存图片：保存当前处理结果。
+- 另存图片：将处理结果保存为新文件。
+- 显示对比：左侧显示处理前图像，右侧显示处理后图像。
+- 基本处理：缩放、水平平移、垂直平移、旋转。
+- 目标提取：使用灰度化、Otsu 阈值、形态学处理和轮廓检测提取前景目标，并用绿色矩形框标记目标。
+- 图像分类：根据平均亮度和主色通道给出简单分类，同时显示目标数量。
+- 线程处理：图像处理工作对象运行在 `QThread` 中，避免阻塞界面。
 
-- 打开图片：PNG、JPG、JPEG、BMP、GIF、WebP 等 Qt 支持的格式
-- 保存当前图片
-- 另存为 PNG / JPG / BMP 等格式
-- 图片显示：使用 Qt Widgets，不使用 OpenCV 窗口
-- 缩放：工具栏滑块、放大、缩小、原始大小
-- 双击图片适配窗口
-- 旋转：左旋 90°、右旋 90°
-- 翻转：水平翻转、垂直翻转
-- 简单处理：灰度化、反色
+## Windows 构建说明
 
-## 文件结构
+本工程使用 CMake 管理，目标是构建 Windows 桌面应用程序 `QtOpenCVImageTool.exe`。推荐使用 **MSVC 64 位**，因为 OpenCV 官方 Windows 预编译包通常就是 MSVC 版本，配置最省事。
+
+构建时请保持三者一致：
+
+- 编译器一致：MSVC 对 MSVC，MinGW 对 MinGW。
+- 位数一致：建议全部使用 64 位。
+- Qt、OpenCV、CMake 使用同一套构建环境。
+
+如果使用 MSVC，则不要混用 MinGW 版 Qt；如果使用 MinGW，则不要直接使用 OpenCV 官方 MSVC 预编译包。
+
+### 需要安装的软件
+
+1. Visual Studio 2022 或 Visual Studio 2022 Build Tools
+
+安装时勾选：
 
 ```text
-chengnan/
-├── CMakeLists.txt
-├── MainWindow.cpp
-├── MainWindow.h
-├── build-windows.ps1
-├── main.cpp
-└── readme.md
+Desktop development with C++
+MSVC v143 x64/x86 build tools
+Windows 10 SDK 或 Windows 11 SDK
+C++ CMake tools for Windows
 ```
 
-## Windows 编译需要的工具
-
-推荐环境：Windows 10 / Windows 11 x64。
-
-必须安装：
-
-1. **Git for Windows**
-   - 下载：<https://git-scm.com/download/win>
-   - 用于克隆项目源码。
-
-2. **CMake 3.16 或更高版本**
-   - 下载：<https://cmake.org/download/>
-   - 安装时建议勾选 `Add CMake to the system PATH`。
-
-3. **Qt 6 或 Qt 5，包含 Widgets 模块**
-   - 下载：<https://www.qt.io/download-qt-installer-oss>
-   - 推荐安装 Qt 6.x 的 MSVC 64-bit 套件，例如 `msvc2019_64` 或 `msvc2022_64`。
-   - 项目不依赖 OpenCV。
-
-4. **Visual Studio 2022 Build Tools 或 Visual Studio 2022**
-   - 下载：<https://visualstudio.microsoft.com/zh-hans/downloads/>
-   - 需要安装组件：`使用 C++ 的桌面开发`。
-   - 提供 MSVC 编译器和 Windows SDK。
-
-可选工具：
-
-- **Ninja**：<https://github.com/ninja-build/ninja/releases>
-- 如果使用 Ninja，可以把 `build-windows.ps1` 的 `-Generator` 参数改成 `Ninja`。
-
-## 获取源码
-
-```powershell
-git clone https://git.luochen570.cn/luochen570/chengnan.git
-cd chengnan
-```
-
-如果仓库主分支已切换到当前版本，直接构建即可；否则可手动切换：
-
-```powershell
-git checkout main
-```
-
-## 一键构建（推荐）
-
-在 Windows PowerShell 中进入项目目录，然后执行：
-
-```powershell
-powershell -ExecutionPolicy Bypass -File .\build-windows.ps1 -QtPrefix "C:\Qt\6.7.2\msvc2019_64"
-```
-
-请把 `-QtPrefix` 改成你本机实际 Qt 安装目录。例如：
-
-```powershell
-powershell -ExecutionPolicy Bypass -File .\build-windows.ps1 -QtPrefix "C:\Qt\6.8.0\msvc2022_64"
-```
-
-脚本会完成：
-
-1. 检查 Qt、CMake、编译器环境
-2. 生成 CMake 构建目录
-3. 编译 Release 版本
-4. 调用 `windeployqt` 收集 Qt 运行库
-5. 把发布文件放到 `dist-windows\chengnan`
-
-构建成功后，运行：
-
-```powershell
-.\dist-windows\chengnan\chengnan.exe
-```
-
-## 手动构建
-
-如果不使用脚本，也可以手动执行：
-
-```powershell
-cmake -S . -B build-windows -G "Visual Studio 17 2022" -A x64 -DCMAKE_PREFIX_PATH="C:\Qt\6.7.2\msvc2019_64"
-cmake --build build-windows --config Release
-```
-
-打包 Qt 运行库：
-
-```powershell
-C:\Qt\6.7.2\msvc2019_64\bin\windeployqt.exe --release --no-translations build-windows\Release\chengnan.exe
-```
-
-## 常见问题
-
-### 找不到 Qt
-
-确认 `-QtPrefix` 指向 Qt 套件目录，而不是 Qt 根目录。例如应使用：
+安装完成后，系统中应能找到类似路径：
 
 ```text
-C:\Qt\6.7.2\msvc2019_64
+C:\Program Files\Microsoft Visual Studio\2022\Community
+C:\Program Files\Microsoft Visual Studio\2022\BuildTools
 ```
 
-不要写成：
+2. Qt for Windows
+
+使用 Qt Online Installer 安装 Qt。推荐安装 Qt 6.x，并勾选 MSVC 64 位组件，例如：
 
 ```text
-C:\Qt
+Qt 6.6.x
+MSVC 2019 64-bit 或 MSVC 2022 64-bit
+Qt Creator
 ```
 
-### 找不到 MSVC 编译器
+安装完成后，Qt 路径通常类似：
 
-请安装 Visual Studio 2022 的 `使用 C++ 的桌面开发`，然后在 “x64 Native Tools Command Prompt for VS 2022” 或已配置 VS 环境的 PowerShell 里运行构建脚本。
+```text
+C:\Qt\6.6.0\msvc2019_64
+C:\Qt\6.6.0\msvc2022_64
+```
 
-### exe 复制到其它电脑无法运行
+该目录下应存在：
 
-请运行 `build-windows.ps1`，并整体复制 `dist-windows\chengnan` 文件夹，不要只复制单个 `chengnan.exe`。
+```text
+C:\Qt\6.6.0\msvc2019_64\lib\cmake\Qt6\Qt6Config.cmake
+```
 
-## 开发说明
+3. OpenCV for Windows
 
-- `main.cpp`：应用入口，创建并显示主窗口
-- `MainWindow.h`：主窗口和图片标签类声明
-- `MainWindow.cpp`：菜单、工具栏、图片显示和处理逻辑
-- `CMakeLists.txt`：Qt Widgets CMake 构建配置
-- `build-windows.ps1`：Windows 一键构建与打包脚本
-- `readme.md`：项目说明文档
+可以使用 OpenCV 官方 Windows 包。解压或安装到例如：
+
+```text
+C:\opencv
+```
+
+常见的 CMake 配置路径是：
+
+```text
+C:\opencv\build\x64\vc16\lib
+```
+
+该目录下应存在：
+
+```text
+C:\opencv\build\x64\vc16\lib\OpenCVConfig.cmake
+```
+
+4. CMake
+
+如果安装 Visual Studio 时勾选了 CMake 工具，通常已经够用。也可以单独安装 CMake for Windows。命令行检查：
+
+```bat
+cmake --version
+```
+
+### 推荐方式：Qt Creator 构建
+
+1. 打开 Qt Creator。
+2. 选择“打开项目”，打开本目录的 `CMakeLists.txt`。
+3. 选择 Windows Kit，例如：
+
+```text
+Desktop Qt 6.x.x MSVC 2019 64-bit
+Desktop Qt 6.x.x MSVC 2022 64-bit
+```
+
+4. 如果 CMake 找不到 OpenCV，在 Qt Creator 的 CMake 配置项中添加：
+
+```text
+OpenCV_DIR=C:/opencv/build/x64/vc16/lib
+```
+
+5. 配置完成后点击“构建”。
+6. 构建成功后会生成 `QtOpenCVImageTool.exe`。
+7. 在 Qt Creator 中点击“运行”即可启动程序。
+
+### 命令行构建：MSVC
+
+打开开始菜单中的：
+
+```text
+x64 Native Tools Command Prompt for VS 2022
+```
+
+进入工程目录，例如：
+
+```bat
+cd /d D:\QtOpenCVImageTool
+```
+
+使用项目提供的脚本构建：
+
+```bat
+build_windows.bat C:\Qt\6.6.0\msvc2019_64 C:\opencv\build\x64\vc16\lib "Visual Studio 17 2022"
+```
+
+如果你的 Qt 是 MSVC 2022 版本，路径可改为：
+
+```bat
+build_windows.bat C:\Qt\6.6.0\msvc2022_64 C:\opencv\build\x64\vc16\lib "Visual Studio 17 2022"
+```
+
+也可以手动执行 CMake：
+
+```bat
+mkdir build-windows
+cd build-windows
+cmake .. -G "Visual Studio 17 2022" -A x64 -DCMAKE_PREFIX_PATH=C:\Qt\6.6.0\msvc2019_64 -DOpenCV_DIR=C:\opencv\build\x64\vc16\lib
+cmake --build . --config Release
+```
+
+MSVC 生成的 exe 通常位于：
+
+```text
+build-windows\Release\QtOpenCVImageTool.exe
+```
+
+### 命令行构建：MinGW
+
+如果使用 MinGW，需要安装 MinGW 版 Qt，并准备 MinGW 编译出来的 OpenCV。不要把 MSVC 版 OpenCV 直接给 MinGW 使用。
+
+示例：
+
+```bat
+build_windows.bat C:\Qt\6.6.0\mingw_64 C:\opencv-mingw\install "MinGW Makefiles"
+```
+
+手动构建：
+
+```bat
+mkdir build-windows
+cd build-windows
+cmake .. -G "MinGW Makefiles" -DCMAKE_PREFIX_PATH=C:\Qt\6.6.0\mingw_64 -DOpenCV_DIR=C:\opencv-mingw\install
+cmake --build . --config Release
+```
+
+MinGW 生成的 exe 通常位于：
+
+```text
+build-windows\QtOpenCVImageTool.exe
+```
+
+### 运行和发布
+
+构建出来的 `QtOpenCVImageTool.exe` 运行时需要 Qt 和 OpenCV 的 DLL。开发阶段可以直接在 Qt Creator 中运行；如果要单独拷贝给别人运行，需要把依赖 DLL 一起放到 exe 目录。
+
+MSVC Release 示例：
+
+```bat
+cd build-windows\Release
+C:\Qt\6.6.0\msvc2019_64\bin\windeployqt.exe QtOpenCVImageTool.exe
+copy C:\opencv\build\x64\vc16\bin\opencv_world*.dll .
+```
+
+如果 OpenCV 不是 `opencv_world*.dll`，则复制对应的 `opencv_*.dll` 到 exe 所在目录。
+
+MinGW 示例：
+
+```bat
+cd build-windows
+C:\Qt\6.6.0\mingw_64\bin\windeployqt.exe QtOpenCVImageTool.exe
+copy C:\opencv-mingw\bin\opencv_*.dll .
+```
+
+### 常见问题
+
+1. `Could not find Qt6`
+
+说明 `CMAKE_PREFIX_PATH` 没有指向 Qt 安装目录。请确认路径类似：
+
+```text
+C:\Qt\6.6.0\msvc2019_64
+```
+
+2. `Could not find OpenCV`
+
+说明 `OpenCV_DIR` 没有指向包含 `OpenCVConfig.cmake` 的目录。请搜索 `OpenCVConfig.cmake`，并把它所在目录传给 CMake。
+
+3. 程序启动时报缺少 DLL
+
+请运行 `windeployqt`，并把 OpenCV 的 DLL 复制到 exe 所在目录。
+
+4. 链接时报 MSVC/MinGW 相关错误
+
+通常是 Qt、OpenCV、编译器不匹配。MSVC 工程必须使用 MSVC 版 Qt 和 MSVC 版 OpenCV；MinGW 工程必须使用 MinGW 版 Qt 和 MinGW 版 OpenCV。
+
+## WSL 中交叉编译 Windows 程序
+
+WSL 里不能使用 Linux 版 Qt/OpenCV 直接生成 Windows exe，必须准备 Windows 目标库。推荐使用 MinGW-w64 作为交叉编译器，并准备同为 MinGW-w64 目标的 Qt 和 OpenCV。
+
+需要的组件：
+
+- `x86_64-w64-mingw32-g++`
+- Windows/MinGW 目标 Qt，目录中应包含 `Qt6Config.cmake` 或 `Qt5Config.cmake`
+- Windows/MinGW 目标 OpenCV，目录中应包含 `OpenCVConfig.cmake`
+
+构建脚本：
+
+```bash
+export QT_MINGW_PREFIX=/opt/mxe/usr/x86_64-w64-mingw32.shared/qt6
+export OpenCV_DIR=/opt/mxe/usr/x86_64-w64-mingw32.shared/lib/cmake/opencv4
+./build_wsl_windows.sh
+```
+
+如果使用的是自己编译或复制来的 Windows 目标 Qt/OpenCV，把上面两个路径换成实际路径即可。
+
+## 说明
+
+本示例中的分类属于简单规则分类，适合作为课程作业演示：根据图像整体亮度判断“偏亮/偏暗/亮度适中”，根据 BGR 平均值判断主色。若需要更高精度分类，可替换为训练好的 OpenCV DNN 或传统机器学习模型。