Qwidget expand to fit contents. I have a QScrollArea, its layout is a QVBoxLa.

Qwidget expand to fit contents. Ask Question Asked 10 years, 1 month ago. You can adjust the size of the widget by dragging the size grip. Feb 27, 2020 · I set everything so that my table widget resizes to fit the contents. Yet, trying to drag the very corner back in order to return to the original size, is not possible; that is, the column width can expand but not shrink. ", however I have a QLabel, I set the font size in CSS before calling adjustSize, it does not take into account the font size and the geometry is not large enough to accommodate a larger font. Hot Network Questions Are people in the USA obligated to report crime? Are AC-DC SMPS power supplies safe for swimming Jan 16, 2021 · I am writing a QTabwidget with only two tabs. I also have an image in the widget that serves as a backdrop, and I want this to also enlarge so it always frames the Jun 6, 2020 · Calling adjustSize, "adjusts the size of the widget to fit its contents. That function is buried within the QMainWindowLayout private class, but can be stimulated by adding and removing a dummy QDockWidget, which causes the layout to invalidate and recalcualte the dock widget positions My qwidget currently contains a groupbox and a layout inside that groupbox. Extending a QWidget to override the QWidget::sizeHint method does not sound ridiculous to me, as you change the widget behaviour by changing its preferred size and that fits the polymorphism spirit of OOD. In the resizing of the QDialog you may need to disconnect or set a flags in our QTableview so as not to get the circular calling: QTable::resize->QDialog::resize->QTable::resize Sep 1, 2010 · Until now, I was creating the QScrollArea and its child widgets in the constructor of my window, and then I was resizing the window vertically to fit its content using resize(400, sizeHint(). I want to be like below. Feb 19, 2016 · That "Comment" bit is a QGroupBox containing a QTextEdit, it is being cropped because some containing QWidget is not expanding to fit it. size() but the size is not the correct size, because if I use the same size for my QWidget, the table is cropped, i. Following my previous questions, I want to ask about how to dynamically how to resize QGroupBox to fit its contents. sizeHint()): see above; mainWindow. I have a QScrollArea, its layout is a QVBoxLa Dec 10, 2015 · I would like the form_frame to stretch to fit both vertically and horizontally when the window is resized, but at the moment it only stretches horizontally. Here is an example: (full working code below) The window as it comes up by default: The window after resizing: Dec 17, 2020 · You were supposed to use methods like QWidget::setMinimumSizeHint() or QWidget::resize(). Jan 7, 2023 · This will create a widget with a label and a size grip that you can use to expand and collapse the widget. I want to show a QTableWidget in a QDialog, and here's the code I use:. In your code the QGridLayout l is a local variable. , adding or removing elements), adjustSize() can be used to automatically update the widget's size to fit the new content. setFixedSize(calcualtedWidth, calculatedHigh); theContainer::adjustSize(); } the problem encountered is that even though both resizings of the QLineEdit and the parent widget work (to some extent), the limitation in this case is that the QlineEdit, after resizing, overlaps Jun 11, 2024 · How i could make a QScrollArea stick on the top and grow according to the widgets added to it?. You can either change that property in Qt Designer, if you used it to build your UI, or via code: layout->setSizeConstraint(QLayout::SetMinimumSize); Jul 10, 2013 · I'm using PyQt4. If the widget is part of a layout, the layout will automatically adjust to accommodate the new size. Resize QMainwindow to fit Qdockwidget size. Mar 6, 2012 · This enum specifies how the size hint of the QComboBox should adjust when new content is added or content changes. 8 docs. aspectratiopixmaplabel. Therefore I would like to somehow dynamically adjust the size of the QListWidgetItem regarding the needed space (first one will need less than the second one). What I'm asking is how to get the columns to size based on their contents, and allow the headers to stretch as well. I tried this: Main But I can't figure out how to make my custom widget expand to fill all the available space of each row in the list widget. 0. 1. Also bear in mind you don't really need a grid layout for the top widget, vertical one (with 2 items) should do just fine. Mar 4, 2021 · If using the QListWidget is mandatory, then you have to provide only the hint for the required orientation. So (1) add this QGridLayout l in the class level and remaining of your code unchanged OR (2) declare it as a pointer inside the constructor as below. What should I do, after having added or removed widgets, to Jan 6, 2016 · Let's say you have a main window mainWindow and a widget inside it called content. I have more space available than I need. Aug 15, 2014 · While it may fit on the first QListWidgetItem, because it has only 300 characters, it may not fit on the second QListWidgetItem, because of the 1000 characters. The user resizes the widget using the mouse or keyboard. void QWidget:: adjustSize Adjusts the size of the widget to fit its contents. contentsSize()); } Jun 11, 2024 · How could I make a QScrollArea stick to the top and grow according to the widgets added to it?. QWidget *widget = new QWidget; // Add some content to the widget. qt. There are 2 inaccuracies. How to properly size Qt widgets? is a vague question and depends on the use cases. in designer, the widget is set to be say, 200px wide. resize() Qt5Widgets. But that is what @SGaist meant by. See also removeAction(), QMenu, and addAction(). e. height()). Adjusts the size of the widget to fit its contents. Custom widgets can be written to take advantage of this Qt Widget Resize Event. I am Using it to display some game pictures, but it doesn't fit in there, it just adds two scrollbars, which is not what I need. I used setFixedSize() instead of resize() because the user can decide to minimize the window and if that happens then why must you bother showing the full file path (I am guessing you want to show the full path at all times for a reason and not have the user being able to minimize the Jul 6, 2021 · I want to automatically resize the QTextEdit to fit to the wrapped text, the text itself will always be in one line, and the wrapped text can have multiple lines, I want the QTextEdits to fit to the height of wrapped lines. When I add the QScrollArea to the layout as vlayout->addWidget(scrollArea, 0, Qt::AlignTop); Nov 5, 2009 · Use layouts and set size policies to QSizePolicy::Expanding. Oct 5, 2017 · The last one looks good (almost no problems). What do I need to do to make the scrollable area of the widget resize dynamically as I add and remove from the QGridLayout? Apr 2, 2014 · I think you can can a contents resize event of the viewport judging by the 4. Here is an example of how you might override resizeEvent() in a custom widget: Oct 13, 2011 · I got a QWidget inside a QScrollArea (see below) @void Ui_Manager::setupUi(QWidget *manager) {QScrollArea *scrollArea = new QScrollArea(); scrollArea->setWidget(manager); scrollArea->setWidgetResizable(true);}@ During Runtime i add several other Widgets to the Manager and move them into free space available inside the Manager-Widget: Oct 10, 2014 · The problem is, nothing in the code above actually causes the QMainWindowLayout to recalculate itself. This is good, but I can't get my QWidget that hosts this table widget to resize itself to show everything. The widget's layout manager changes the widget's size. Jun 25, 2021 · Hi, I am not a pro at UE4 - I’ve read lots of different similar Q+A’s and experimented endlessly without success. height()); Dec 6, 2022 · If you resize the window the following happens. Now if you tell the headers to stretch, the following happens. This will cause a layout recalculation. The main problem is with setting the alignment when you add the widget to the layout. h. dll Update the widget's contents If the widget displays images or text, you might need to update the layout or scale the content to fit the new size. Aug 17, 2018 · Sorry for the vagueness. When I add the QScrollArea to the layout like this: vlayout->addWidget(scrollArea, 0, Qt::AlignTop);, it doesn't obey the Qt::AlignTop flag and is floating in the middle: Jan 4, 2017 · By default it tries to fit everything in the hinted sizes (hints coming from the widgets in the layout). from parent to child). resize(this. My goal: Have a text widget pop up upon clicking, and ensure that the text widget automatically enlarges to fit all the text that is input to the component. First dockwidget contents multipletabs, second is Qpainter widget, third is Matlabplot and fourth is pdf report. w = QDialog() layout = QGridLayout() tw = QTableWidget(w) code to setup tw Feb 27, 2020 · I set everything so that my table widget resizes to fit the contents. So if you have a QTableView which size should vary depending on its content, you have to add some logic to trigger the resize of the container widget. resize(mainWindow. 1, the contents of parent widgets are propagated by default to each of their children as long as Qt::WA_PaintOnScreen is not set. What I would want in such scenarios is to have some logic that decides if after a content change, the new content won't fit anymore into the widget and automatically increase the widget size so everything would fit. , the size hint's width and height are >= 0 QWidget *parent = nullptr is the parent of the new widget. Using pyqt to resize the height of the Qtable widget. This function uses sizeHint() if it is valid, i. Here's an example of how to use QWidget::resize(): #include <QWidget> int main(int argc, char *argv[]) {. Nov 4, 2022 · Hello, thanks for the detailed answer, I understand your idea, maybe I won’t rely on the size hint of a label and put it in QScrollArea, I’ll think about it, but this window will be like a window with a message for the user, like ToastMessage, so even I don't know how best to do it. Multiple consecutive calls to QWidget::updateGeometry() will only cause one layout recalculation. See full list on doc. 0, QWidget automatically double-buffers its painting, so there is no need to write double-buffering code in paintEvent() to avoid flicker. void QWidget:: addActions (const QList < QAction *> &actions) Appends the actions actions to this widget's list of actions. self. Just Dec 21, 2012 · You must set: layout->setContentsMargins(0,0,0,0); By default every QWidget or QFrame add 15 pixels of margin in every direction. sizeHint(). All you need to do is set the size adjust policy on the table when initialising the UI, and it will automatically resize to fit the contents. So once you get the size you can emit a signal to the dialog to resize itself. To resize the height of a QTableWidget to fit the table’s contents, you can use the resizeRowsToContents() method. 5 and PyQt6. On construction of the widget I add widgets to the layout and then try to resize the layout using the functions setSizeConstraint(),adjustSize(), and resize(). g. You have to resize it yourself by requesting its sizeHint after you modify the number of columns. Here's a snippet of an overriden method that I'm testing this with: override void mousePressEvent(QMouseEvent event) { this. It is awesome and works well. I have polished this missing subclass of QLabel. Dec 27, 2013 · I have a window that contains a QTableView which columns are adjusted to content and are fixed in width. . If your resizing involves content height to get bigger, you can fit the mainWindow to it like this: mainWindow. Apr 22, 2020 · Which implies we shouldn't need to be doing stuff ourselves on the QScrollArea to make it fit when the content resizes?? EDIT And I see now from your file below that you are setting widgetResizable to true, which means you are resizing the widget to fit the scrollarea, when maybe you want the scrollarea to resize to fit the widget instead?? Jul 7, 2021 · I am using Python 3. The section which is in Stretch mode will then expand. This will die once the constructor code block goes out of scope. In my experiments, just setting the layoutSizeConstraint property to SetMinimumSize on the layout that contains the QLabel should be enough to let the label expand and adjust to its contents. Most of the time choosing the good layouts and size Feb 4, 2021 · QTabWidget, like QStackedWidget, uses QStackedLayout, which always has a minimum size hint computed using the minimum size hint of all of its widgets. This object contains information about the old and Jun 14, 2011 · Using takois answer I played around with the sizeHintForColumn or sizeHintForRow and found that you have to add slightly larger numbers, because there might be some style dependent margins still. #ifndef ASPECTRATIOPIXMAPLABEL_H #define ASPECTRATIOPIXMAPLABEL_H #include <QLabel> #include <QPixmap> #include <QResizeEvent> class AspectRatioPixmapLabel : public QLabel { Q_OBJECT public: explicit AspectRatioPixmapLabel(QWidget *parent = 0); virtual int heightForWidth( int width ) const Since QWidget is a subclass of QPaintDevice, subclasses can be used to display custom content that is composed using a series of painting operations with an instance of the QPainter class. Share. Manual solution: The QWidget class has a method adjustSize that resize the QWidget to fit its content. child to parent), then this setting has to be set to true. This can either be done via Qt Designer (in the QAbstractScrollArea section of the Property Editor), or programmatically, like this: Sep 1, 2014 · The widget starts displaying horizontal and/or vertical scroll bars and I can use them to scroll the HTML content. Dec 13, 2023 · It has fixed 3 columns. void QWidget:: resize (int w, QWidget (a qlineedit) auto resize to content. 5. I can't see it fully. May 6, 2014 · I have a problem with the size of widget in Qt. Now, I'm adding or removing widgets in the QScrollArea at runtime. scrollAreaWidgetContents = QtGui. 9. QtWidg Sep 10, 2019 · Planned maintenance impacting Stack Overflow and all Stack Exchange sites is scheduled for Wednesday, October 23, 2024, 9:00 PM-10:00 PM EDT (Thursday, October 24, 1:00 UTC - Thursday, October 24, 2:00 UTC). Dec 13, 2019 · How to resize a Qwidget to bigger than default size. scrollArea Mar 29, 2023 · First of all, there are some formatting issues with your code so i edited them and added some of my own. QWidget(self. QLabel *label = new QLabel("This is a label", widget); // Adjust the widget's size to fit the The new height of the widget in pixels. So far, so good. Just try to enlarge the widget window by dragging the bottom-right corner. May 23, 2017 · void QWidget::adjustSize() Adjusts the size of the widget to fit its contents. Jul 1, 2015 · The problem is when I'm hiding widgets the height from the QGroupbox didn't fit to content. The QTableView is nested within a QWidget that in turn is nested within a QScrollArea that in turn is nested within a tabbed QMdiArea which is the centralWidget of a QMainWindow. size(). The function immediately resizes the widget to the specified dimensions. Resizing windows to match screen size in Qt. The widget's parent widget resizes, causing the child widget to also resize. width, mainWindow. Since Qt 4. Example. When I open a window, it looks ok, but when I resize the window, the QTableView itself gets resized, but columns' width remains the same. Create a QDockWidget that resizes to it's contents. So far I have seen widgets expand by default to fit their contents (as long as child widgets are added to layouts before they become visible, which is what's happening here) but suddenly this is no longer Jan 18, 2011 · I've tried using the resize() method with the contentsSize() argument, this will resize the widget's height to fit the text contents, however the width stays the same. Whether that will do all that you want I do not know. Your QDialog will be automatically resized at runtime. io When the widget's content changes dynamically (e. The returned sizeHint of a widget is always a size that recommended, aka is the optimal size to ensure that all widget have the correct size to show their contents (which is usually bigger than the minimum size). Oct 13, 2017 · void theContainer::resize_to_content(QString text) { { // lineedit. When I run the code shows up like this below. minimumSizeHint()): see above; I also read in this thread, that before doing the mainWindow resize I the event loop needs to be run to recalculate the new sizes, so I inserted QCoreApplication::processEvents to do so, without any visible effect. I checked tablewidget. None of this seems to resize the widget properly however as my widgets are still overlapping each other. Dec 6, 2016 · This has a very easy solution in PyQt5. It actually means that if the main widget in the scroll area wants to ever resize (i. Is there any built-in way to make it work? Aug 16, 2010 · After creating your QVBoxLayout in Qt Designer, right-click on the background of your widget/dialog/window (not the QVBoxLayout, but the parent widget) and select Lay Out -> Lay Out in a Grid from the bottom of the context-menu. Nov 25, 2014 · mainWindow. This approach contrasts with the canvas-style approach used by the Graphics View Framework where items are added to a scene by the application and are May 25, 2012 · Call QWidget::setSizePolicy() to specify the space requirements of the widget. Resize window to fit content. I want to fit the length of the tab bar (two tab headers) import sys from PyQt5. In QtDesigner, once all your children are placed on your QDialog, then click on the Adjust Size button next layout ones. I want to divide screen into four widget automatically whenever it runs at any screen, And I want to have tabs to resize to its content. The headers stretch, and the window does resize correctly, but the contents of the columns does not resize. I want columns to resize to fit the edges of QTableView every time the window gets resized. Constant Value Description QComboBox::AdjustToContents 0 The combobox will always adjust to the contents QComboBox::AdjustToContentsOnFirstShow 1 The combobox will adjust to its contents the first time it is shown. Call QWidget::updateGeometry() whenever the size hint, minimum size hint or size policy changes. Sep 4, 2014 · Make scroll area expand horizontally to fit contents. My custom widget is created in Qt Designer, and I've set its size hint to be expanding horizontally, but it doesn't do this when placed in my list widget (i. In order to prevent that, both sizeHint() and minimumSizeHint() should be reimplemented, and updateGeometry() should be called whenever the index changes. You have to set layouts to your group boxes too and everything will be resizing. The screenshot of the accepted answer clearly shows a QMainWindow, which can not have a layout set (it has its own internal layout that, other than the central widget, also manages the menu bar, the status bar, and any possible tool bar or dock widget); in fact, any attempt to set a layout in Designer for the main window will actually result in setting it for the If I resize the window so that the QScrollArea grows, then I see this: Indicating that there's some layout inside the scroll area that is not resizing properly. Oct 3, 2020 · Hello, I am working on a multi-tab Qt application and want to shrink or enlarge the main window to fit into the minimum size of the widgets in the active tab. From the docs, it seems that this property only deals with times where the main scroll area wants to resize a widget (i. Nov 18, 2016 · when i resize my mainwindow to 900x750 (aka 75%) i want to have my qframe at 300,225 size but also maintain that its in the "middle" of the screen relative to the main window size, and also have the child widgets of qframe auto resize to 75% and have them in the same position relative to qframe. When resizeEvent() is called, it is passed a QResizeEvent object as an argument. But the tab headers (name) are not fitting the QTabwidget width. height() + content. 2. ngs mrdtg gujp bcib iejqmq gie gndv iqqvz vbrdvjyw zwgb