UI: Add AppUtil.

src/ui/FortFirewall.pro

@@ -48,6 +48,7 @@ SOURCES += \
     translationmanager.cpp \
     util/app/appinfomanager.cpp \
     util/app/appinfoworker.cpp \
+    util/app/apputil.cpp \
     util/conf/addressrange.cpp \
     util/conf/confutil.cpp \
     util/dateutil.cpp \
@@ -111,6 +112,7 @@ HEADERS += \
     translationmanager.h \
     util/app/appinfomanager.h \
     util/app/appinfoworker.h \
+    util/app/apputil.h \
     util/conf/addressrange.h \
     util/conf/confutil.h \
     util/dateutil.h \

src/ui/util/app/appinfoworker.cpp

@@ -3,6 +3,7 @@
 #include <QImage>
 
 #include "appinfomanager.h"
+#include "apputil.h"
 
 AppInfoWorker::AppInfoWorker(AppInfoManager *manager) :
     WorkerObject(manager)

src/ui/util/app/apputil.cpp

@@ -0,0 +1,63 @@
+#include "apputil.h"
+
+#include <QDir>
+
+#include <comdef.h>
+#include <commctrl.h>
+#include <commoncontrols.h>
+#include <objbase.h>
+#include <shellapi.h>
+
+// Defined in qpixmap_win.cpp
+Q_GUI_EXPORT QPixmap qt_pixmapFromWinHICON(HICON icon);
+
+namespace {
+
+static QPixmap pixmapFromImageList(int iImageList, const SHFILEINFO &info)
+{
+    QPixmap result;
+
+    IImageList *imageList;
+    HICON hIcon;
+
+    if (SUCCEEDED(SHGetImageList(iImageList, IID_IImageList, reinterpret_cast<void **>(&imageList)))
+            && SUCCEEDED(imageList->GetIcon(info.iIcon, ILD_TRANSPARENT, &hIcon))) {
+        result = qt_pixmapFromWinHICON(hIcon);
+        DestroyIcon(hIcon);
+    }
+
+    return result;
+}
+
+static QPixmap extractShellIcon(const QString &appPath)
+{
+    const QString nativePath = QDir::toNativeSeparators(appPath);
+    const wchar_t *nativePathW = reinterpret_cast<const wchar_t *>(nativePath.utf16());
+
+    const UINT flags = SHGFI_SYSICONINDEX | SHGFI_USEFILEATTRIBUTES;
+
+    QPixmap pixmap;
+
+    SHFILEINFOW info;
+    ZeroMemory(&info, sizeof(SHFILEINFOW));
+
+    const HRESULT hr = SHGetFileInfoW(nativePathW, 0, &info,
+                                      sizeof(SHFILEINFOW), flags);
+    if (SUCCEEDED(hr)) {
+        pixmap = pixmapFromImageList(SHIL_JUMBO, info);
+    }
+
+    return pixmap;
+}
+
+}
+
+AppUtil::AppUtil(QObject *parent) :
+    QObject(parent)
+{
+}
+
+QPixmap AppUtil::getIcon(const QString &appPath)
+{
+    return extractShellIcon(appPath);
+}

src/ui/util/app/apputil.h

@@ -0,0 +1,17 @@
+#ifndef APPUTIL_H
+#define APPUTIL_H
+
+#include <QObject>
+#include <QPixmap>
+
+class AppUtil : public QObject
+{
+    Q_OBJECT
+
+public:
+    explicit AppUtil(QObject *parent = nullptr);
+
+    Q_INVOKABLE static QPixmap getIcon(const QString &appPath);
+};
+
+#endif // APPUTIL_H