[Qt-interest] Layout issue
Sajjad
dosto.walla at gmail.com
Fri Nov 19 05:50:40 CET 2010
Hello Alex,
One of the attachments may not have been delivered. So i am pasting the code
here instead:
**********************************************************************************************
#include "DynamicWidget.h"
DynamicWidget::DynamicWidget(QWidget *parent)
:QWidget(parent)
{
//setupUi(this);
// i shall set up the gui by myself
//create the main Layout
m_mainLayout = new QVBoxLayout;
//create the horizontal layout for
//the label and the line edit
m_horizontalLayout = new QHBoxLayout;
//the layout that will be changing its contents
m_dynamicLayout = new QGridLayout;
m_nodeLabel = new QLabel("&Node Name:",this);
m_lineEdit = new QLineEdit(this);
m_nodeLabel->setBuddy(m_lineEdit);
m_horizontalLayout->addWidget(m_nodeLabel);
m_horizontalLayout->addWidget(m_lineEdit);
m_mainLayout->addLayout(m_horizontalLayout);
m_mainLayout->addLayout(m_dynamicLayout);
setLayout(m_mainLayout);
connect(m_lineEdit,SIGNAL(textChanged(QString)),this,SLOT(adjustWidgets(const
QString&)));
}
void DynamicWidget::adjustWidgets(const QString &strNum)
{
int num = strNum.toInt();
//first check if there is any existing layout
//if it is there, then remove it from the list
if(checkBoxLists.size() > 0)
{
for(int i = 0; i < checkBoxLists.size();i++)
{
m_dynamicLayout->removeWidget(checkBoxLists[i]);
}
qDeleteAll(checkBoxLists);
checkBoxLists.clear();
}
if(num > 0)
{
for(int i = 0; i < num; i++)
{
for(int j = 0; j < 2; j++)
{
//int col = j + 1;
if(j == 2)
break;
else
{
checkBoxLists.push_back(new QCheckBox(tr("Boolean
Value: %1").arg(i+1),this));
m_dynamicLayout->addWidget(checkBoxLists.back(),i,j);
}
}
}
}
}
DynamicWidget::~DynamicWidget()
{
qDeleteAll(checkBoxLists);
checkBoxLists.clear();
}
**********************************************************************************************
On Fri, Nov 19, 2010 at 5:33 AM, Sajjad <dosto.walla at gmail.com> wrote:
> Hello Alex,
>
> I am getting the same scenario even after i detached the layout as
> suggested in the previous attachment you sent.
>
> I have the main layout as vbox layout.
>
> The label and the line edit in the horizontal layout.
>
>
> The checkboxes in the grid layout that are added dynamically with the
> keypress.
>
> Any other point of view on that?
>
>
> Regards
> Sajjad
>
>
>
> On Fri, Nov 19, 2010 at 2:20 AM, Malyushytsky, Alex <alex at wai.com> wrote:
>
>> If I assume correctly, you would like to have label and edit control
>> being resize independently from check boxes.
>> Putting them in the same layout makes their sizes dependent on each other.
>>
>> Solution is based on what you want to achieve.
>>
>> You can try to keep work mostly with only your widget grid layout.
>> In this case when you add/remove checkboxes you should also remove edit
>> control ( I would place them in the independent horizontal layout anyway)
>> And re-add it with add function which specifies 'rowSpan' according to the
>> current number of checkboxes.
>>
>> But I would suggest give each group of controls its own layout like on the
>> picture in the attachment.
>>
>> Make the widget layout vertical layout, group label and edit control with
>> horizontal layout,
>> Group all the checkboxes in the grid layout. (If you decide to create last
>> layout dynamically you might need to use invalidate on widget layout, or you
>> can just to correct layout margins )
>>
>> Hope this helps,
>> Alex
>>
>>
>>
>>
>>
>> In this case you should not put them in the same layout.
>> Cause grid layout
>>
>> So I would suggest to change layout structure (see attachment):
>> You will have 3 layouts
>> 1.
>>
>>
>>
>> From: qt-interest-bounces at trolltech.com [mailto:
>> qt-interest-bounces at trolltech.com] On Behalf Of Malyushytsky, Alex
>> Sent: Thursday, November 18, 2010 2:02 PM
>> To: qt-interest at trolltech.com
>> Subject: Re: [Qt-interest] Layout issue
>>
>> Try to call invalidate() on layout after changes.
>>
>> Alex
>>
>> From: qt-interest-bounces at trolltech.com [mailto:
>> qt-interest-bounces at trolltech.com] On Behalf Of Sajjad
>> Sent: Thursday, November 18, 2010 12:22 PM
>> To: qt-interest at trolltech.com
>> Subject: [Qt-interest] Layout issue
>>
>> Hello forum,
>>
>>
>> I have a label and line edit which is horizontal layout and this layout is
>> in turn inside the grid layout.
>>
>> I have declared a private slot that responds to text changed signal of
>> the line edit.
>>
>>
>> The slots adds check boxes dynamically to the grid layout. Grid layout is
>> the main layout of the class that i have sub-classed form QWidget.
>>
>>
>> When i press 4, two four check boxes added dynamically to the layout.
>> Then again when i press 1 , previously added 4 check boxes are removed and
>> the new one
>> check box is added to the layout. But there is the extra space which was
>> allocated while adding 4 check boxes. Those spaces remains ?
>>
>>
>> Any hint to maintain the size of the widget dynamically while adding and
>> removing check boxes from the layout?
>>
>>
>>
>> Regards
>> Sajjad
>>
>>
>>
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