#include?
#include?
#include?
#include?
#include?“ImageViewer.h“

ImageViewer::ImageViewer（QWidget?*parent）
????:?QMainWindow（parent）?scaleFactor（1）
{
	setupUi（this）;
	imageLabel?=?new?QLabel;
	imageLabel->setBackgroundRole（QPalette::base）;
	imageLabel->setSizePolicy（QSizePolicy::Ignored?QSizePolicy::Ignored）;
	imageLabel->setScaledContents（true）;
	scrollArea?=?new?QScrollArea;
	scrollArea->setBackgroundRole（QPalette::Dark）;
	scrollArea->setWidget（imageLabel）;
	setCentralWidget（scrollArea）;
	dirModel?=?new?QDirModel（this）;
	dirModel->setFilter（QDir::Dirs?|?QDir::Drives）;
	dirCurrent?=?new?QDir（）;
	imageInfo?=?new?QLabel（this）;
	imageInfo->setSizePolicy（QSizePolicy::ExpandingQSizePolicy::Expanding）;
	imageInfo->setAlignment（Qt::AlignCenter）;
	imageInfo->setStatusTip（tr（“Display?image?infomation?in?the?selected?folder“））;
	toolBar->addWidget（imageInfo）;
	treeView->setModel（dirModel）;
	treeView->header（）->setVisible（false）;
	treeView->setColumnHidden（1true）;	//?Size
	treeView->setColumnHidden（2true）;??//?Type
	treeView->setColumnHidden（3true）;??//?Modified?Date
	foreach?（QByteArray?ba?QImageReader::supportedImageFormats（））
	{
		QString?ext?=?QString（“*.“）+QString（ba）;
		supportFormat<	}
	resize（780580）;
	currentFile?=?displayFiles.constBegin（）;
	UpdateUI（）;
}

ImageViewer::~ImageViewer（）
{
	delete?dirCurrent;
}

void?adjustScrollBar（QScrollBar?*scrollBar?double?factor）
{
????scrollBar->setValue（int（factor?*?scrollBar->value（）
????????????????????????????+?（（factor?-?1）?*?scrollBar->pageStep（）/2）））;
}

void?ImageViewer::scaleImage（double?factor）
{
????Q_ASSERT（imageLabel->pixmap（））;
????scaleFactor?*=?factor;
????imageLabel->resize（scaleFactor?*?imageLabel->pixmap（）->size（））;

????adjustScrollBar（scrollArea->horizontalScrollBar（）?factor）;
????adjustScrollBar（scrollArea->verticalScrollBar（）?factor）;
}

void?ImageViewer::DisplayImage（const?QString?&fileName）
{
		QImage?image（fileName）;
		if?（image.isNull（））?{
		????QMessageBox::information（this?tr（“Image?Viewer“）
		?????????????????????????????tr（“Cannot?load?%1.“）.arg（fileName））;
		????return;
		}
		imageLabel->setPixmap（QPixmap::fromImage（image））;
		scaleImage（1.0）;
}

void?ImageViewer::UpdateUI（）
{
	if（currentFile?==?displayFiles.constEnd（））
	{
		imageInfo->setText（tr（“No?Images?Click?TreeView?to?select?pic?folder“））;
		actionNext->setEnabled（false）;
		actionPrevious->setEnabled（false）;
		actionZoomIn->setEnabled（false）;
		actionZoomOut->setEnabled（false）;
		actionNormalSize->setEnabled（false）;
	}
	else
	{
		int?i?=?displayFiles.indexOf（*currentFile?0）?+?1;	//?non-Programmer?count?from?1?instead?0
		imageInfo->setText（QString（tr（“%1/%2?%3?%4%“））.arg（i）.arg（displayFiles.size（））.arg（*currentFile）.arg（scaleFactor*100?3））;
		actionNext->setEnabled（true）;
		actionPrevious->setEnabled（true）;
		actionZoomIn->setEnabled（true）;
		actionZoomOut->

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2020-12-27?22:55??QtImage\
?????文件????????1448??2020-12-27?19:12??QtImage\.qmake.stash
?????文件????????4691??2006-08-27?22:51??QtImage\ImageViewer.cpp
?????文件?????????934??2006-08-27?16:43??QtImage\ImageViewer.h
?????文件????????4217??2006-08-27?16:55??QtImage\ImageViewer.ui
?????文件???????29093??2020-12-27?19:19??QtImage\Makefile
?????文件???????48244??2020-12-27?19:19??QtImage\Makefile.Debug
?????文件???????48260??2020-12-27?19:19??QtImage\Makefile.Release
?????文件???????53248??2006-08-27?22:53??QtImage\QtImage.exe
?????文件?????????469??2020-12-27?19:18??QtImage\QtImage.pro
?????文件???????24633??2020-12-27?22:55??QtImage\QtImage.pro.user
?????文件?????????296??2006-08-27?03:36??QtImage\QtImageRes.qrc
?????目錄???????????0??2020-12-27?19:18??QtImage\debug\
?????文件??????305601??2020-12-27?19:18??QtImage\debug\ImageViewer.obj
?????文件??????125440??2020-12-27?19:18??QtImage\debug\QtImage.exe
?????文件?????1433584??2020-12-27?19:18??QtImage\debug\QtImage.ilk
?????文件?????2428928??2020-12-27?19:18??QtImage\debug\QtImage.pdb
?????文件?????1757184??2020-12-27?19:18??QtImage\debug\QtImage.vc.pdb
?????文件???????99791??2020-12-27?19:18??QtImage\debug\main.obj
?????文件????????5100??2020-12-27?19:18??QtImage\debug\moc_ImageViewer.cpp
?????文件??????105991??2020-12-27?19:18??QtImage\debug\moc_ImageViewer.obj
?????文件?????????229??2020-12-27?19:18??QtImage\debug\moc_predefs.h
?????文件???????31284??2020-12-27?19:18??QtImage\debug\qrc_QtImageRes.cpp
?????文件???????12166??2020-12-27?19:18??QtImage\debug\qrc_QtImageRes.obj
?????目錄???????????0??2010-04-21?02:16??QtImage\images\
?????文件?????????929??2004-10-13?08:57??QtImage\images\about.png
?????文件?????????982??2004-10-13?09:02??QtImage\images\apply.png
?????文件?????????754??2004-10-13?09:31??QtImage\images\next.png
?????文件?????????703??2004-10-13?09:31??QtImage\images\previous.png
?????文件?????????877??2004-10-15?08:55??QtImage\images\zoomin.png
?????文件????????1107??2004-10-13?08:59??QtImage\images\zoomnormal.png
............此處省略4個文件信息