重写base64编码转换demo

QWidgetDemo.pro

@@ -37,7 +37,7 @@ SUBDIRS += imageswitch      #图片开关控件
 SUBDIRS += netserver        #网络中转服务器
 SUBDIRS += base64           #图片文字base64互换
 SUBDIRS += smoothcurve      #平滑曲线
-SUBDIRS += frameless      	#无边框方案支持win、linux、mac等
+SUBDIRS += frameless      	#跨平台无边框窗体
 
 #限定windows系统加载下面的项目
 win32 {

README.md

@@ -49,7 +49,7 @@
 | 41 | miniblink | miniblink示例 |
 | 42 | base64 | 图片文字base64互换 |
 | 43 | smoothcurve | 平滑曲线 |
-| 44 | frameless | 地表最强最简单无边框方案 |
+| 44 | frameless | 跨平台无边框窗体 |
 
 ### 二、学习群
 1. **Qt交流大会群 853086607(雨田哥)**

base64/base64.cpp

@@ -0,0 +1,41 @@
+#include "base64.h"
+#include "qbuffer.h"
+#include "qdebug.h"
+
+QString Base64::imageToBase64(const QImage &image)
+{
+    return QString(imageToBase64x(image));
+}
+
+QByteArray Base64::imageToBase64x(const QImage &image)
+{
+    //这个转换可能比较耗时建议在线程中执行
+    QByteArray data;
+    QBuffer buffer(&data);
+    image.save(&buffer, "JPG");
+    data = data.toBase64();
+    return data;
+}
+
+QImage Base64::base64ToImage(const QString &data)
+{
+    return base64ToImagex(data.toUtf8());
+}
+
+QImage Base64::base64ToImagex(const QByteArray &data)
+{
+    //这个转换可能比较耗时建议在线程中执行
+    QImage image;
+    image.loadFromData(QByteArray::fromBase64(data));
+    return image;
+}
+
+QString Base64::textToBase64(const QString &text)
+{
+    return QString(text.toLocal8Bit().toBase64());
+}
+
+QString Base64::base64ToText(const QString &text)
+{
+    return QString(QByteArray::fromBase64(text.toLocal8Bit()));
+}

base64/base64.h

@@ -0,0 +1,37 @@
+#ifndef BASE64_H
+#define BASE64_H
+
+/**
+ * base64编码转换类 作者:feiyangqingyun(QQ:517216493) 2016-12-16
+ * 1. 图片转base64字符串
+ * 2. base64字符串转图片
+ * 3. 字符转base64字符串
+ * 4. base64字符串转字符
+ * 5. 后期增加数据压缩
+ * 6. Qt6对base64编码转换进行了重写效率提升至少200%
+ */
+
+#include <QImage>
+
+#ifdef quc
+class Q_DECL_EXPORT Base64
+#else
+class Base64
+#endif
+
+{
+public:
+    //图片转base64字符串
+    static QString imageToBase64(const QImage &image);
+    static QByteArray imageToBase64x(const QImage &image);
+
+    //base64字符串转图片
+    static QImage base64ToImage(const QString &data);
+    static QImage base64ToImagex(const QByteArray &data);
+
+    //字符串与base64互转
+    static QString textToBase64(const QString &text);
+    static QString base64ToText(const QString &text);
+};
+
+#endif // BASE64_H

base64/base64.pro

@@ -8,7 +8,12 @@ DESTDIR     = $$PWD/../bin
 CONFIG      += warn_off
 
 SOURCES     += main.cpp
+
 SOURCES     += frmbase64.cpp
+SOURCES     += base64.cpp
+
 HEADERS     += frmbase64.h
+HEADERS     += base64.h
+
 FORMS       += frmbase64.ui
 

base64/frmbase64.cpp

@@ -2,8 +2,9 @@
 
 #include "frmbase64.h"
 #include "ui_frmbase64.h"
+#include "base64.h"
 #include "qfiledialog.h"
-#include "qbuffer.h"
+#include "qelapsedtimer.h"
 #include "qdebug.h"
 
 frmBase64::frmBase64(QWidget *parent) : QWidget(parent), ui(new Ui::frmBase64)
@@ -16,39 +17,6 @@ frmBase64::~frmBase64()
     delete ui;
 }
 
-QString frmBase64::getImageData(const QImage &image)
-{
-    return QString(getImageData2(image));
-}
-
-QByteArray frmBase64::getImageData2(const QImage &image)
-{
-    QByteArray imageData;
-    QBuffer buffer(&imageData);
-    image.save(&buffer, "JPG");
-    imageData = imageData.toBase64();
-    return imageData;
-}
-
-QImage frmBase64::getImage(const QString &data)
-{
-    QByteArray imageData = QByteArray::fromBase64(data.toLatin1());
-    QImage image;
-    image.loadFromData(imageData);
-    return image;
-}
-
-QString frmBase64::getBase64(const QString &data)
-{
-    return QString(data.toLocal8Bit().toBase64());
-}
-
-QString frmBase64::getData(const QString &base64)
-{
-    QByteArray data = QByteArray::fromBase64(base64.toLocal8Bit());
-    return QString(data);
-}
-
 void frmBase64::on_btnOpen_clicked()
 {
     QString fileName = QFileDialog::getOpenFileName(this, "选择文件", "", "图片(*.png *.bmp *.jpg)");
@@ -70,27 +38,53 @@ void frmBase64::on_btnClear_clicked()
 
 void frmBase64::on_btnImageToBase64_clicked()
 {
+    //计时
+    QElapsedTimer time;
+    time.start();
+
     QString fileName = ui->txtFile->text().trimmed();
     if (!fileName.isEmpty()) {
-        ui->txtBase64->setText(getImageData(QImage(fileName)));
+        ui->txtBase64->setText(Base64::imageToBase64(QImage(fileName)));
     }
+
+    //统计用时
+#if (QT_VERSION >= QT_VERSION_CHECK(4,8,0))
+    double elapsed = (double)time.nsecsElapsed() / 1000000;
+#else
+    double elapsed = (double)time.elapsed();
+#endif
+    QString strTime = QString::number(elapsed, 'f', 3);
+    qDebug() << QString("用时 %1 毫秒").arg(strTime);
 }
 
 void frmBase64::on_btnBase64ToImage_clicked()
 {
+    //计时
+    QElapsedTimer time;
+    time.start();
+
     QString text = ui->txtBase64->toPlainText().trimmed();
     if (!text.isEmpty()) {
-        QPixmap pix = QPixmap::fromImage(getImage(text));
+        QPixmap pix = QPixmap::fromImage(Base64::base64ToImage(text));
         pix = pix.scaled(ui->labImage->size() - QSize(4, 4), Qt::KeepAspectRatio);
         ui->labImage->setPixmap(pix);
     }
+
+    //统计用时
+#if (QT_VERSION >= QT_VERSION_CHECK(4,8,0))
+    double elapsed = (double)time.nsecsElapsed() / 1000000;
+#else
+    double elapsed = (double)time.elapsed();
+#endif
+    QString strTime = QString::number(elapsed, 'f', 3);
+    qDebug() << QString("用时 %1 毫秒").arg(strTime);
 }
 
 void frmBase64::on_btnTextToBase64_clicked()
 {
     QString text = ui->txtText->text().trimmed();
     if (!text.isEmpty()) {
-        ui->txtBase64->setText(getBase64(text));
+        ui->txtBase64->setText(Base64::textToBase64(text));
     }
 }
 
@@ -98,6 +92,6 @@ void frmBase64::on_btnBase64ToText_clicked()
 {
     QString text = ui->txtBase64->toPlainText().trimmed();
     if (!text.isEmpty()) {
-        ui->txtText->setText(getData(text));
+        ui->txtText->setText(Base64::base64ToText(text));
     }
 }

base64/frmbase64.h

@@ -18,18 +18,6 @@ public:
 private:
     Ui::frmBase64 *ui;
 
-private slots:
-    //图片转base64编码
-    QString getImageData(const QImage &image);
-    QByteArray getImageData2(const QImage &image);
-    //base64编码数据转图片
-    QImage getImage(const QString &data);
-
-    //汉字转base64编码
-    QString getBase64(const QString &data);
-    //base64编码转汉字
-    QString getData(const QString &base64);
-
 private slots:
     void on_btnOpen_clicked();
     void on_btnClear_clicked();

base64/frmbase64.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>644</width>
+    <width>800</width>
-    <height>530</height>
+    <height>600</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -15,13 +15,17 @@
   </property>
   <layout class="QGridLayout" name="gridLayout">
    <item row="0" column="0">
-    <widget class="QLineEdit" name="txtFile"/>
+    <widget class="QLineEdit" name="txtFile">
+     <property name="text">
+      <string>E:/myFile/美女图片/2.jpg</string>
+     </property>
+    </widget>
    </item>
    <item row="0" column="1">
     <widget class="QPushButton" name="btnOpen">
      <property name="minimumSize">
       <size>
-       <width>100</width>
+       <width>110</width>
        <height>0</height>
       </size>
      </property>
@@ -34,7 +38,7 @@
     <widget class="QPushButton" name="btnImageToBase64">
      <property name="minimumSize">
       <size>
-       <width>100</width>
+       <width>110</width>
        <height>0</height>
       </size>
      </property>
@@ -47,7 +51,7 @@
     <widget class="QPushButton" name="btnBase64ToImage">
      <property name="minimumSize">
       <size>
-       <width>100</width>
+       <width>110</width>
        <height>0</height>
       </size>
      </property>
@@ -59,7 +63,7 @@
    <item row="1" column="0">
     <widget class="QLineEdit" name="txtText">
      <property name="text">
-      <string>feiyangqingyun QQ: 517216493</string>
+      <string>游龙 feiyangqingyun QQ: 517216493</string>
      </property>
     </widget>
    </item>
@@ -67,7 +71,7 @@
     <widget class="QPushButton" name="btnClear">
      <property name="minimumSize">
       <size>
-       <width>100</width>
+       <width>110</width>
        <height>0</height>
       </size>
      </property>
@@ -80,7 +84,7 @@
     <widget class="QPushButton" name="btnTextToBase64">
      <property name="minimumSize">
       <size>
-       <width>100</width>
+       <width>110</width>
        <height>0</height>
       </size>
      </property>
@@ -93,7 +97,7 @@
     <widget class="QPushButton" name="btnBase64ToText">
      <property name="minimumSize">
       <size>
-       <width>100</width>
+       <width>110</width>
        <height>0</height>
       </size>
      </property>

base64/main.cpp

@@ -9,7 +9,7 @@ int main(int argc, char *argv[])
     QApplication a(argc, argv);
     a.setFont(QFont("Microsoft Yahei", 9));
 
-#if (QT_VERSION <= QT_VERSION_CHECK(5,0,0))
+#if (QT_VERSION < QT_VERSION_CHECK(5,0,0))
 #if _MSC_VER
     QTextCodec *codec = QTextCodec::codecForName("gbk");
 #else