有个不必现错误，预览初步完成

core_form/panelwidget/panelwidget.cpp

@@ -0,0 +1,158 @@
+#pragma execution_character_set("utf-8")
+
+#include "panelwidget.h"
+#include "qscrollarea.h"
+#include "qframe.h"
+#include "qboxlayout.h"
+#include "qdebug.h"
+
+PanelWidget::PanelWidget(QWidget *parent) : QWidget(parent)
+{
+    scrollArea = new QScrollArea(this);
+    scrollArea->setObjectName("scrollAreaMain");
+    scrollArea->setWidgetResizable(true);
+
+    scrollAreaWidgetContents = new QWidget();
+    scrollAreaWidgetContents->setGeometry(QRect(0, 0, 100, 100));
+
+    verticalLayout = new QVBoxLayout(scrollAreaWidgetContents);
+    verticalLayout->setSpacing(0);
+    verticalLayout->setContentsMargins(0, 0, 0, 0);
+
+    frame = new QFrame(scrollAreaWidgetContents);
+    frame->setObjectName("frameMain");
+
+    gridLayout = new QGridLayout(frame);
+    gridLayout->setSpacing(0);
+    gridLayout->setContentsMargins(0, 0, 0, 0);
+
+    verticalLayout->addWidget(frame);
+    scrollArea->setWidget(scrollAreaWidgetContents);
+    frame->setStyleSheet("QFrame#frameMain{border-width:0px;}");
+
+    margin = 0;
+    space = 0;
+    autoWidth = false;
+    autoHeight = false;
+}
+
+void PanelWidget::resizeEvent(QResizeEvent *)
+{
+    scrollArea->resize(this->size());
+}
+
+QSize PanelWidget::sizeHint() const
+{
+    return QSize(300, 200);
+}
+
+QSize PanelWidget::minimumSizeHint() const
+{
+    return QSize(20, 20);
+}
+
+int PanelWidget::getMargin() const
+{
+    return this->margin;
+}
+
+int PanelWidget::getSpace() const
+{
+    return this->space;
+}
+
+bool PanelWidget::getAutoWidth() const
+{
+    return this->autoWidth;
+}
+
+bool PanelWidget::getAutoHeight() const
+{
+    return this->autoHeight;
+}
+
+QList<QWidget *> PanelWidget::getWidgets()
+{
+    return this->widgets;
+}
+
+int PanelWidget::getColumnCount()
+{
+    return this->columnCount;
+}
+
+void PanelWidget::setWidget(QList<QWidget *> widgets, int columnCount)
+{
+    this->widgets = widgets;
+    this->columnCount = columnCount;
+
+    int row = 0;
+    int column = 0;
+    int index = 0;
+
+    //先把之前的所有移除并不可见
+    foreach (QWidget *widget, widgets) {
+        gridLayout->removeWidget(widget);
+        widget->setVisible(false);
+    }
+
+    //重新添加到布局中并可见
+    foreach (QWidget *widget, widgets) {
+        gridLayout->addWidget(widget, row, column);
+        widget->setVisible(true);
+
+        column++;
+        index++;
+        if (index % columnCount == 0) {
+            row++;
+            column = 0;
+        }
+    }
+
+    row++;
+
+    //设置右边弹簧
+    if (!autoWidth) {
+        QSpacerItem *hSpacer = new QSpacerItem(1, 1, QSizePolicy::Expanding, QSizePolicy::Minimum);
+        gridLayout->addItem(hSpacer, 0, gridLayout->columnCount());
+    }
+
+    //设置底边弹簧
+    if (!autoHeight) {
+        QSpacerItem *vSpacer = new QSpacerItem(1, 1, QSizePolicy::Minimum, QSizePolicy::Expanding);
+        gridLayout->addItem(vSpacer, row, 0);
+    }
+}
+
+void PanelWidget::setMargin(int left, int top, int right, int bottom)
+{
+    gridLayout->setContentsMargins(left, top, right, bottom);
+}
+
+void PanelWidget::setMargin(int margin)
+{
+    if (this->margin != margin) {
+        setMargin(margin, margin, margin, margin);
+    }
+}
+
+void PanelWidget::setSpace(int space)
+{
+    if (this->space != space) {
+        gridLayout->setSpacing(space);
+    }
+}
+
+void PanelWidget::setAutoWidth(bool autoWidth)
+{
+    if (this->autoWidth != autoWidth) {
+        this->autoWidth = autoWidth;
+    }
+}
+
+void PanelWidget::setAutoHeight(bool autoHeight)
+{
+    if (this->autoHeight != autoHeight) {
+        this->autoHeight = autoHeight;
+    }
+}

core_form/panelwidget/panelwidget.h

@@ -0,0 +1,74 @@
+#ifndef PANELWIDGET_H
+#define PANELWIDGET_H
+
+#include <QWidget>
+#include <QPainterPath>
+
+class QScrollArea;
+class QFrame;
+class QVBoxLayout;
+class QGridLayout;
+
+#ifdef quc
+#if (QT_VERSION < QT_VERSION_CHECK(5,7,0))
+#include <QtDesigner/QDesignerExportWidget>
+#else
+#include <QtUiPlugin/QDesignerExportWidget>
+#endif
+
+class QDESIGNER_WIDGET_EXPORT PanelWidget : public QWidget
+#else
+class PanelWidget : public QWidget
+#endif
+
+{
+    Q_OBJECT
+    // Q_PROPERTY(int margin READ getMargin WRITE setMargin)
+    // Q_PROPERTY(int space READ getSpace WRITE setSpace)
+    // Q_PROPERTY(bool autoWidth READ getAutoWidth WRITE setAutoWidth)
+    // Q_PROPERTY(bool autoHeight READ getAutoHeight WRITE setAutoHeight)
+
+public:
+    explicit PanelWidget(QWidget *parent = 0);
+
+protected:
+    void resizeEvent(QResizeEvent *);
+
+private:
+    QScrollArea *scrollArea;            //滚动区域
+    QWidget *scrollAreaWidgetContents;  //滚动区域载体
+    QFrame *frame;                      //放置设备的框架,自动变宽变高
+    QVBoxLayout *verticalLayout;        //设备面板总布局
+    QGridLayout *gridLayout;            //设备表格布局
+
+    int margin;                         //边距
+    int space;                          //设备之间的间隔
+    bool autoWidth;                     //宽度自动拉伸
+    bool autoHeight;                    //高度自动拉伸
+
+    QList<QWidget *> widgets;           //设备面板对象集合
+    int columnCount;                    //面板列数
+
+public:
+    QSize sizeHint()                const;
+    QSize minimumSizeHint()         const;
+
+    int getMargin()                 const;
+    int getSpace()                  const;
+    bool getAutoWidth()             const;
+    bool getAutoHeight()            const;
+
+    QList<QWidget *> getWidgets();
+    int getColumnCount();
+
+public Q_SLOTS:
+    void setWidget(QList<QWidget *> widgets, int columnCount);
+    void setMargin(int left, int top, int right, int bottom);
+    void setMargin(int margin);
+    void setSpace(int space);
+    void setAutoWidth(bool autoWidth);
+    void setAutoHeight(bool autoHeight);
+
+};
+
+#endif // PANELWIDGET_H

core_form/panelwidget/panelwidget.pri

@@ -0,0 +1,5 @@
+HEADERS += \
+    $$PWD/panelwidget.h
+
+SOURCES += \
+    $$PWD/panelwidget.cpp