Qt 图片批量格式转换器

#include "PictureConvert.h" #include <QMessageBox> PictureConvert::PictureConvert(QWidget *parent) : QWidget(parent) { setupUi(this); filter = ".jpg"; jpgRadioButton->setChecked(true); setWindowTitle(tr("图片格式批量转换器")); infoLabel->setText(tr("\tReady...")); initConnect(); } void PictureConvert::initConnect() { connect(openPushButton, SIGNAL(clicked()), this, SLOT(desPath())); connect(browsePushButton, SIGNAL(clicked()), this, SLOT(srcPath())); connect(closePushButton, SIGNAL(clicked()), this, SLOT(close())); connect(startConvertPushButton, SIGNAL(clicked()), this, SLOT(startConvert())); connect(desComboBox, SIGNAL(editTextChanged(const QString&)), this, SLOT(comboBoxChanged(const QString&))); connect(bmpRadioButton, SIGNAL(clicked()), this, SLOT(doSelect())); connect(pngRadioButton, SIGNAL(clicked()), this, SLOT(doSelect())); connect(jpgRadioButton, SIGNAL(clicked()), this, SLOT(doSelect())); connect(jpegRadioButton, SIGNAL(clicked()), this, SLOT(doSelect())); connect(ppmRadioButton, SIGNAL(clicked()), this, SLOT(doSelect())); connect(xpmRadioButton, SIGNAL(clicked()), this, SLOT(doSelect())); connect(xbmRadioButton, SIGNAL(clicked()), this, SLOT(doSelect())); } void PictureConvert::desPath() { QString tempPath; tempPath = srcComboBox->currentText(); if (tempPath.isEmpty()) { outDir = QFileDialog::getExistingDirectory(this, tr("保存的文件夹"), QDir::currentPath()); } else { QDir dir(tempPath); outDir = QFileDialog::getExistingDirectory(this, tr("保存的文件夹"), dir.absolutePath()); } desComboBox->setEditText(outDir); } void PictureConvert::srcPath() { QString dirName; QString info; inFiles = QFileDialog::getOpenFileNames(this, tr("选择要转换的文件"), QDir::currentPath(), tr("*.bmp *.png *.jpg *.ico")); if (!inFiles.isEmpty()) { QDir dir(inFiles.at(0)); dirName = dir.path(); int i = dirName.lastIndexOf("/"); dirName.remove(i+1, dirName.length() - i -1); srcComboBox->insertItem(0, dirName); srcComboBox->setCurrentIndex(0); } info = tr("共有需要转换的文件 %1 个").arg(inFiles.size()); infoLabel->setText(info); infoLabel->update(); } void PictureConvert::doSelect() { QRadioButton *radioBtn = (QRadioButton *)sender(); if (radioBtn == bmpRadioButton) { filter = ".bmp"; bmpRadioButton->setChecked(true); } else if (radioBtn == jpegRadioButton) { filter = ".jpeg"; jpegRadioButton->setChecked(true); } else if (radioBtn == jpgRadioButton) { filter = ".jpg"; jpgRadioButton->setChecked(true); } else if (radioBtn == pngRadioButton) { filter = ".png"; pngRadioButton->setChecked(true); } else if (radioBtn == ppmRadioButton) { filter = ".ppm"; ppmRadioButton->setChecked(true); } else if (radioBtn == xbmRadioButton) { filter = ".xbm"; xbmRadioButton->setChecked(true); } else if (radioBtn == xpmRadioButton) { filter = ".xpm"; xpmRadioButton->setChecked(true); } } void PictureConvert::comboBoxChanged(const QString &outDir) { this->outDir = outDir; } void PictureConvert::startConvert() { QString newFilePath; int count = 0; infoLabel->setText(tr("正在转换，请耐心等待...")); foreach (QString file, inFiles) { QString tempFileName; QPixmap newPicture; bool ok = false; QDir dir(file); int i; newPicture.load(file); tempFileName = dir.dirName(); i = tempFileName.lastIndexOf("."); tempFileName.remove(i, tempFileName.length() - i); newFilePath += outDir + "/" + tempFileName + filter; if (QFile::exists(newFilePath)) { QMessageBox box(QMessageBox::Warning, tr("警告"), tr("存在同名文件%1\n是否覆盖？").arg(newFilePath), QMessageBox::Yes | QMessageBox::No); if (box.exec() == QMessageBox::No) { continue; } } ok = newPicture.save(newFilePath); if (ok) { count++; } newFilePath.clear(); qApp->processEvents(); } infoLabel->setText(tr("\tReady...")); QMessageBox box(QMessageBox::Information, tr("转换完成"), tr("共完成%1个文件的转换").arg(count)); box.exec(); }