文件管理器动态启用按钮

MemDisplayAndEdit.cpp

@@ -28,8 +28,6 @@ MemDisplayAndEdit::MemDisplayAndEdit(QWidget *parent) :
 MemDisplayAndEdit::~MemDisplayAndEdit()
 {
     delete ui;
-
-
 }
 
 void MemDisplayAndEdit::updateSysStatusToUI(void){

fileManage/FileManageWidget.cpp

@@ -32,10 +32,14 @@ FileManageWidget::FileManageWidget(QWidget *parent) :
     ui->systemFileListView->setMouseTracking(true);
     ui->udiskFileListView->setMouseTracking(true);
 
+    connect(ui->systemFileListView, &QListWidget::itemSelectionChanged, this, &FileManageWidget::refreshButtonsStatus);
+    connect(ui->udiskFileListView, &QListWidget::itemSelectionChanged, this, &FileManageWidget::refreshButtonsStatus);
+
     updateUDiskDevList();
 
     m_focusedListView = ui->systemFileListView;
     m_focusedListView->setFocus();
+    refreshButtonsStatus();
 
     onFilterCBoxSelectChanged(ui->filterCBox->currentIndex());
 }
@@ -75,6 +79,8 @@ bool FileManageWidget::eventFilter(QObject *watched, QEvent *event)
     palette.setColor(backgroundPanel->backgroundRole(), "#5396C1");
     backgroundPanel->setPalette(palette);
 
+    refreshButtonsStatus();
+
     return false;
 }
 
@@ -152,6 +158,22 @@ void FileManageWidget::updateUDiskDevList()
     updateFileListView(ui->udiskFileListView);
 }
 
+void FileManageWidget::refreshButtonsStatus()
+{
+    if(!m_focusedListView)
+        return;
+
+    auto selectedItems = m_focusedListView->selectedItems();
+
+    ui->cancelAllBtn->setEnabled(!selectedItems.isEmpty());
+    ui->delSelectedBtn->setEnabled(!selectedItems.isEmpty());
+
+    ui->importBtn->setEnabled(!selectedItems.isEmpty() && ui->udiskFileListView == m_focusedListView);
+    ui->exportBtn->setEnabled(!selectedItems.isEmpty() && ui->systemFileListView == m_focusedListView);
+
+    ui->selectAllBtn->setEnabled(m_focusedListView->count() != selectedItems.size());
+}
+
 int FileManageWidget::updateFileListView(QListWidget* listView)
 {
     QString searchPath = listView->property("searchPath").toString();

fileManage/FileManageWidget.h

@@ -35,6 +35,8 @@ private slots:
     void onDelSelectedBtnClicked();
     void updateUDiskDevList();
 
+    void refreshButtonsStatus();
+
 private:
 
     int updateFileListView(QListWidget* listView);

testprintwidget.cpp

@@ -449,7 +449,8 @@ void TestPrintWidget::createItemImage()
     image.save("/home/plg/doc/scene.png");
 }
 
-void TestPrintWidget::getShowSelectItemText(){
+void TestPrintWidget::getShowSelectItemText()
+{
     //Scene Test
     QList<QGraphicsItem *> items=pPicScene->items();
     int index=0;
@@ -486,13 +487,17 @@ void TestPrintWidget::getShowSelectItemText(){
         }
     }
 
-    if(lastSelectedTxtItem) {
+    if(!lastSelectedTxtItem) {
+        return;
+    }
 
         // 对于文本item，将它的文本显示到编辑框
     if(lastSelectedTxtItem->sourceType() == SourceType::TEXT) {
         m_LineEdit->setText(lastSelectedTxtItem->source().toString());
     }
 
+    pViewer->centerOn(lastSelectedTxtItem);
+
     QString currItemFontFamily = lastSelectedTxtItem->font().family();
 
     QHash<QString, int> fontNameToIndex;
@@ -512,7 +517,6 @@ void TestPrintWidget::getShowSelectItemText(){
     ui.cbResolution->setCurrentIndex(fontNameToIndex[currItemFontFamily]);
     ui.cbResolution->blockSignals(b);
     return;
-    }
 }
 
 void TestPrintWidget::on_saveButton_pressed()