pictureconvert.cpp

linux下qt编写的批量图片转换程序。

#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();
}