Widget size in layouts with different screen resolution problem [S60]

[Zlatomir]

I'm not sure that i really understand your problem, but have you tried MinimumExpanding:

label1->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::MinimumExpanding);
    //...

label1->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::MinimumExpanding);
    //...

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[JacquesBaniaque]

Nope, the last one does the same effect as picture 3)
AFAIK Expanding and MinimumExpanding does not differ very much (later one sets a minimum size at minimumSizeHint(?)).

I'll try once again:
Labels should have their maximum size if possible. By maximum size i dont mean 'expand to infinity/screen size' but expand to the maximum size i set (3x120 in the example code).
So if labels vertical size is 360 and display vertical size is 300 all 3 labels will have 100 v-size and will fill whole screen idealy. But if display is bigger then 360 v-size then labels should reach their maximum size (3x120) and be aligned at the top of the screen (like in picture 2) and the empty, unused space should be at the bottom.

And like i said earlier - do not be suggested by the code i posted. Setting maximum size of widgets this way or assigning policies to them might not be the good solution.

C'mon, somebody had to the have the same problem someday

[Zlatomir]

You can edit the policies for labels to make them expand "larger" then the spacer (I think i finally understood your problem )

//...
    label1->setMaximumHeight(120);
    label2->setMaximumHeight(120);
    label3->setMaximumHeight(120);
 
    QSizePolicy policy = label1->sizePolicy();
    policy.setVerticalStretch(3);                           //don't remember the exact "formula" but 3 should be enough
    label1->setSizePolicy(policy);
 
    label2->setSizePolicy(policy);
 
    label3->setSizePolicy(policy);
 
 
    QSpacerItem *spacer = new QSpacerItem(0, 0, QSizePolicy::Minimum, QSizePolicy::MinimumExpanding);
 
    mainLayout->addWidget(label1);
    mainLayout->addWidget(label2);
    mainLayout->addWidget(label3);
    mainLayout->addSpacerItem(spacer);
 
    //don't set sizepolicy again... if you want other then prefered set it before policy edit
    //label1->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
    //label2->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
    //label3->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
    //...

//...
    label1->setMaximumHeight(120);
    label2->setMaximumHeight(120);
    label3->setMaximumHeight(120);

    QSizePolicy policy = label1->sizePolicy();
    policy.setVerticalStretch(3);                           //don't remember the exact "formula" but 3 should be enough
    label1->setSizePolicy(policy);

    label2->setSizePolicy(policy);

    label3->setSizePolicy(policy);


    QSpacerItem *spacer = new QSpacerItem(0, 0, QSizePolicy::Minimum, QSizePolicy::MinimumExpanding);

    mainLayout->addWidget(label1);
    mainLayout->addWidget(label2);
    mainLayout->addWidget(label3);
    mainLayout->addSpacerItem(spacer);
    
    //don't set sizepolicy again... if you want other then prefered set it before policy edit
    //label1->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
    //label2->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
    //label3->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
    //...

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[JacquesBaniaque]

Yes! That's it! Problem solved!
Thanks Zlatomir

Still i would really appreciate if You explained why this one worked and previous did not or at least direct me to some source were i could read about it

[Zlatomir]

This is the line that does the "magic"

policy.setVerticalStretch(3);

policy.setVerticalStretch(3);

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That widgets that will widget->setSizePolicy(policy); will have a 3 times bigger stretch factor (which control the relative size of the widgets in a container dialog/window/widget/etc)

And in our case all the widgets will occupy more vertical space in container (but no more that 120, because you set up that way), and this will prevent the spacer to expand more (kind of like the widgets/labels have "priority" to expand and the spacer expands in the remaining space if the labels reach the maximum size)