Looking for list-widget like string stack class

[aamer4yu]

Or may be you can look at QListWidget

[pospiech]

Or may be you can look at QListWidget

As I wrote im my second post in this thread I know listwidget very well but expect not really a very good speed if I constantly remove the first item and add a new last one and that every second.

[pospiech]

My solution using the ideas posted here looks now like this:

#include "ui/ui_WidgetListStringStack.h"
#include <QtCore/QStringList>
#include <QtGui/QStringListModel>
#include <QtCore/QPointer>
 
class WidgetListStringStack : public QWidget, protected Ui_WidgetListStringStack
{
	Q_OBJECT
public:
	WidgetListStringStack(QWidget* parent = 0, Qt::WFlags flags = 0);
	virtual ~WidgetListStringStack();
 
private:
	QPointer<QStringListModel> StringListModel;
	QStringList StackList;
	int MaxStackSize;
 
public:
	void addMessage(QString & message);
	void setMaxStackSize(int value);
 
};

#include "ui/ui_WidgetListStringStack.h"
#include <QtCore/QStringList>
#include <QtGui/QStringListModel>
#include <QtCore/QPointer>

class WidgetListStringStack : public QWidget, protected Ui_WidgetListStringStack
{
	Q_OBJECT
public:
	WidgetListStringStack(QWidget* parent = 0, Qt::WFlags flags = 0);
	virtual ~WidgetListStringStack();

private:
	QPointer<QStringListModel> StringListModel;
	QStringList StackList;
	int MaxStackSize;

public:
	void addMessage(QString & message);
	void setMaxStackSize(int value);

};

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WidgetListStringStack::WidgetListStringStack( QWidget* parent /*= 0*/, Qt::WFlags flags /*= 0*/ ) : QWidget(parent, flags)
{
	setupUi(this);
	setMaxStackSize(100);
	StringListModel=new QStringListModel();
}
 
 
WidgetListStringStack::~WidgetListStringStack()
{
}
 
void WidgetListStringStack::setMaxStackSize(int value)
{
	MaxStackSize = value;
}
 
void WidgetListStringStack::addMessage(QString & message)
{
	StackList.append(message);
	if (StackList.size() > MaxStackSize)
		StackList.removeFirst();
 
	StringListModel->setStringList(StackList);
 
	listView->setModel(StringListModel); 
}

WidgetListStringStack::WidgetListStringStack( QWidget* parent /*= 0*/, Qt::WFlags flags /*= 0*/ ) : QWidget(parent, flags)
{
	setupUi(this);
	setMaxStackSize(100);
	StringListModel=new QStringListModel();
}


WidgetListStringStack::~WidgetListStringStack()
{
}

void WidgetListStringStack::setMaxStackSize(int value)
{
	MaxStackSize = value;
}

void WidgetListStringStack::addMessage(QString & message)
{
	StackList.append(message);
	if (StackList.size() > MaxStackSize)
		StackList.removeFirst();
	
	StringListModel->setStringList(StackList);
	
	listView->setModel(StringListModel); 
}

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I filled it using a timer with 100ms and it does not flicker and looks very smooth.

However I need to look at the last item by default. How do I reset the view at every addMessage() call ?

[wysota]

What do you mean by reset? You wish to scroll the view to the end? Just take a look at QAbstractItemView docs and you'll see.

Anyway, I'd rather use a simple model with a circular buffer with a regular QListView.