Add disable and enable item method, resizeLabelWidth method;, valueChanged signal to SlidePickerBox.

src/components/SlidePickerBox.cpp

@@ -19,7 +19,7 @@ SlidePickerBox::SlidePickerBox(QWidget *parent):QWidget(parent) {
     label->setObjectName("sliderPickerLabel");
     label->setFixedHeight(fontSize);
     label->setFixedWidth(320);
-    QPoint p = this->mapToGlobal({this->contentsMargins().left(),50-fontSize/2});
+    QPoint p = {0,50-fontSize/2};
     label->move(p);
     lbls.push_back(label);
     QLabel* label1 = new QLabel(this);
@@ -29,7 +29,7 @@ SlidePickerBox::SlidePickerBox(QWidget *parent):QWidget(parent) {
     label1->setObjectName("sliderPickerLabel");
     label1->setFixedHeight(fontSize);
     label1->setFixedWidth(320);
-    QPoint p1 = this->mapToGlobal({this->contentsMargins().left(),150-fontSize/2});
+    QPoint p1 = {0,150-fontSize/2};
     label1->move(p1);
     lbls.push_back(label1);
     QLabel* label2 = new QLabel(this);
@@ -39,7 +39,7 @@ SlidePickerBox::SlidePickerBox(QWidget *parent):QWidget(parent) {
     label2->setObjectName("sliderPickerLabel");
     label2->setFixedHeight(fontSize);
     label2->setFixedWidth(320);
-    QPoint p2 = this->mapToGlobal({this->contentsMargins().left(),250-fontSize/2});
+    QPoint p2 = {0,250-fontSize/2};
     label2->move(p2);
     lbls.push_back(label2);
 
@@ -51,7 +51,7 @@ SlidePickerBox::SlidePickerBox(QWidget *parent):QWidget(parent) {
     line1->setFixedSize(320,100);
     line1->setObjectName("topBottomLine");
     line1->raise();
-    QPoint lp = this->mapToGlobal({this->contentsMargins().left(),100});
+    QPoint lp = {0,100};
     line1->move(lp);
 
     selectedIndex = 1;
@@ -76,11 +76,13 @@ void SlidePickerBox::mouseMoveEvent(QMouseEvent *ev) {
         }
         //防止拉过头
         int selectItemCenter = selectedLbl->geometry().center().y();
-        if (selectedLbl == lbls.last() && selectItemCenter<=150 && offset<0) return;
+        if (selectedLbl == getEnabledLastLabel() && selectItemCenter<=150 && offset<0) return;
-        if (selectedLbl == lbls.first() && selectItemCenter>=150 && offset>0) return;
+        if (selectedLbl == getEnabledFirstLabel() && selectItemCenter>=150 && offset>0) return;
         int i = 0;
         for (auto item : lbls)
         {
+            if (disableItems.contains(item->text()))continue;
+
             //不需要横向
             //int nx = item->geometry().left()+(ev->pos().x()-o_x);
             int ny = item->geometry().top() + offset;
@@ -109,6 +111,8 @@ void SlidePickerBox::mouseReleaseEvent(QMouseEvent *ev) {
     isDragging = false;
     adjustPositon();
     QWidget::mouseReleaseEvent(ev);
+    QString v = getSelectedValue();
+    emit valueChanged(v);
 }
 
 void SlidePickerBox::adjustPositon() const {
@@ -163,7 +167,7 @@ void SlidePickerBox::setItems(QStringList itemsList) {
         lbl->setFixedHeight(fontSize);
         lbl->setFixedWidth(320);
         lbls.push_back(lbl);
-        QPoint p = this->mapToGlobal({this->contentsMargins().left(),-150});
+        QPoint p = {0,-150};
         lbl->move(p);
     }
     selectedIndex = lbls.count()-1;
@@ -178,36 +182,32 @@ QString SlidePickerBox::getSelectedValue() {
 void SlidePickerBox::setCurrentLabel(QLabel *label) {
     if (selectedLbl)hideLabel(selectedLbl);
     if (label) {
-        QPoint lp = this->mapToGlobal({this->contentsMargins().left(), 100});
+        QPoint lp = {0, 100};
         label->move(lp);
         label->show();
         selectedLbl = label;
     }
 }
 
-void SlidePickerBox::setNextLabel(QLabel *label) {
+QLabel * SlidePickerBox::getEnabledFirstLabel() {
-    if (nextLbl)hideLabel(nextLbl);
+    if (disableItems.empty()) return lbls.first();
-    if (label){
+    for(int idx = 0; idx<disableItems.size(); idx++){
-        QPoint lp = this->mapToGlobal({this->contentsMargins().left(),200});
+        if(disableItems.contains(lbls[idx]->text()))continue;
-        label->move(lp);
+        return lbls[idx];
-        label->show();
-        nextLbl = label;
     }
 }
 
-void SlidePickerBox::setPrevLabel(QLabel *label) {
+QLabel * SlidePickerBox::getEnabledLastLabel() {
-    if (prevLbl)hideLabel(prevLbl);
+    if (disableItems.empty()) return lbls.last();
-    if (label) {
+    for(int idx = lbls.size()-1; idx>=0; idx--){
-        QPoint lp = this->mapToGlobal({this->contentsMargins().left(), 0});
+        if(disableItems.contains(lbls[idx]->text()))continue;
-        label->move(lp);
+        return lbls[idx];
-        label->show();
-        prevLbl = label;
     }
 }
 
 void SlidePickerBox::hideLabel(QLabel *label) {
     if (!label) return;
-    QPoint lp = this->mapToGlobal({this->contentsMargins().left(), -150});
+    QPoint lp = {0, -150};
     label->move(lp);
 }
 
@@ -221,11 +221,53 @@ void SlidePickerBox::setSelectedValue(const QString& val) {
     }
     int first_y = -100 * (selectedIndex-1);
     for (int i = 0; i < lbls.count() ; ++i) {
-        QPoint lp = {this->contentsMargins().left(), first_y+i*100};
+
+        QPoint lp = this->mapTo(this,{0, first_y+i*100});
         lbls[i]->move(lp);
         lbls[i]->show();
         lbls[i]->setStyleSheet("background:transparent");
-        lbls[i]->lower();
+
+    }
+    selectedLbl = lbls[selectedIndex];
+    lbls[selectedIndex]->setStyleSheet("color:white");
+    adjustPositon();
+}
+
+void SlidePickerBox::resizeLabelWidth() {
+    for (int i = 0; i < lbls.count() ; ++i) {
+        lbls[i]->setAlignment(defaultAlign);
+        lbls[i]->setFixedWidth(this->width()+this->contentsMargins().left()+this->contentsMargins().right());
+    }
+}
+
+void SlidePickerBox::disableItem(const QString& val) {
+    if (!disableItems.contains(val)){
+        disableItems.append(val);
+        rearrangeLabels();
+    }
+}
+
+void SlidePickerBox::enableItem(const QString &val) {
+    if (disableItems.contains(val)){
+        disableItems.removeOne(val);
+        rearrangeLabels();
+    }
+}
+
+void SlidePickerBox::rearrangeLabels() {
+    int first_y = -100 * (selectedIndex-1);
+    int r_index = 0;
+    for (int i = 0; i < lbls.count() ; ++i) {
+        if (disableItems.contains(lbls[i]->text())){
+            lbls[i]->hide();
+            continue;
+        }
+        QPoint lp = this->mapTo(this,{0, first_y+r_index*100});
+        r_index++;
+        lbls[i]->move(lp);
+        lbls[i]->show();
+        lbls[i]->setStyleSheet("background:transparent");
+
     }
     selectedLbl = lbls[selectedIndex];
     lbls[selectedIndex]->setStyleSheet("color:white");

src/components/SlidePickerBox.h

@@ -13,11 +13,21 @@ public:
     explicit SlidePickerBox(QWidget *parent = nullptr);
     QString getSelectedValue();
     void setItems(QStringList itemsList);
-    void addItem(QString& item)
+    void addItem(QString& item) {
-    {
         this->items.append(item);
     }
+    void disableItem(const QString& val);
+    void enableItem(const QString& val);
+    int getItemsCount(){
+        return items.size();
+    }
     void setSelectedValue(const QString& val);
+    void resizeLabelWidth();
+    void setDefaultAlignment(QFlags<Qt::AlignmentFlag> align){
+        this->defaultAlign = align;
+    }
+    signals:
+    void valueChanged(QString & value);
 protected:
 
     bool isDragging;
@@ -33,9 +43,10 @@ protected:
     }
     void setCurrentLabel(QLabel* label);
 
-    void setPrevLabel(QLabel* label);
+    QLabel * getEnabledLastLabel();
-    void setNextLabel(QLabel* label);
+    QLabel * getEnabledFirstLabel();
     void hideLabel(QLabel* label);
+    void rearrangeLabels();
 private:
     int o_x=0,o_y=10;
     int selectedIndex = -1;
@@ -44,7 +55,8 @@ private:
     QLabel* nextLbl = nullptr;
     QList<QLabel*> lbls;
     QStringList items;
-
+    QStringList disableItems;
+    QFlags<Qt::AlignmentFlag> defaultAlign= Qt::AlignCenter;
     void adjustPositon() const;
 };