feat:自定义messageBox添加自动换行功能

source/messageDialog.cpp

@@ -1,5 +1,42 @@
 #include "messageDialog.h"
 #include "ui_messageDialog.h"
+#include <QtMath>
+
+int getStringLength(const QString& str)
+{
+    int chineseCharCount = 0;
+    int englishCharCount = 0;
+    for(QChar ch : str)
+    {
+        ushort unicode = ch.unicode();
+        if(unicode >= 0x4E00 && unicode <= 0x9FFF)
+            chineseCharCount++;
+        else if (ch.isLetter())
+            englishCharCount++;
+    }
+
+    return chineseCharCount + englishCharCount * 0.6; //一个英文字符大概是0.6个中文字符长度
+}
+int getIndexForLength(const QString& str, int maxLength)
+{
+    float length = 0.0;
+    int index = 0;
+    for(QChar ch : str)
+    {
+        ushort unicode = ch.unicode();
+        if(unicode >= 0x4E00 && unicode <= 0x9FFF)
+            length = length + 1.0;
+        else if (ch.isLetter())
+            length = length + 0.6;
+
+        if(qCeil(length) >= maxLength)
+            break;
+        else
+            index++;
+    }
+
+    return index;
+}
 
 MessageDialog::MessageDialog(QWidget *parent)
     : QDialog(parent)
@@ -45,7 +82,19 @@ void MessageDialog::setType(MessageDialogType type)
 void MessageDialog::setMessage(MessageDialogType type,const QString& strTitle,const QString& strContent)
 {
     setType(type);
+    int maxLength = 25;
     ui->labelTitle->setText(strTitle);
+    qInfo() << getStringLength(strContent);
+    if(getStringLength(strContent) > maxLength)
+    {
+        //QString& strText = const_cast<QString&>(strContent);
+        QString strText(strContent);
+        int index = getIndexForLength(strContent, maxLength);
+        qInfo() << index;
+        strText.insert(index, "\n"); //实现简单自动换行
+        ui->labelContent->setText(strText);
+    }
+    else
         ui->labelContent->setText(strContent);
 }
 

ui/messageDialog.ui

@@ -121,9 +121,9 @@ border-right:0px;</string>
       <property name="geometry">
        <rect>
         <x>100</x>
-        <y>70</y>
+        <y>60</y>
-        <width>431</width>
+        <width>391</width>
-        <height>51</height>
+        <height>81</height>
        </rect>
       </property>
       <property name="styleSheet">