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重写base64编码转换demo

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This commit is contained in:
feiyangqingyun
2021-07-31 15:03:14 +08:00
parent 45d9850b08
commit 9f950985c3
7 changed files with 130 additions and 61 deletions
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70
base64/frmbase64.cpp
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@@ -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));
}
}