Then put a next and skip button on that popup window to proceed with the tour or cancel it. If the user clicks on the right side of labels, they click the right button, if they click on the left side of labels, they click the left. Set the Qt::WA_NativeWindow attribute on widgets: The widget itself and all its ancestors will become native (unless Qt::WA_DontCreateNativeAncestors is set). . 12. cpp that subclassed a QWidget for the overlay purpose. The basic trick is to overlay the VideoWidget with the Jul 20, 2018 · To be exactly: With the transparent overlay, the buttons below it can still be clicked. I have a QWidget -based overlay widget which should paint some text and take place over the central widget of my application. from PyQt5 import QtWidgets, QtCore, QtGui. Dynamically add Aug 1, 2020 · I would like a text on a video. cpp in the source for vlc-qt, you can see that the request() method creates a widget and adds it to a layout which is parented to the VlcVideoWidget. I use a QVideoWidget to play the video. class Overlay(QtGui. On less powerful hardware ( f. how can i do that. 2. camera) self. captureSession. First, I can't figure out a way to overlay the QGraphicsView on top of the QOpenGLWidget. Aug 23, 2014 · If you take a look at WidgetVideo. Another approach would be to use a frameless widget with Sep 3, 2021 · I have a small example that works with Camera and shows video in QVideoWidget using code like this: self. I use QMediaPlayer for playing and QVideoWidget for displaying streaming video. import sys. When I try to overlay something transparent on it (both the rviz scene and the overlay are children of a main, container widget), I get black pixels instead of the panel behind, also, a property animation on I am trying to overlay some widgets on a render_panel from librviz. g. The first solution might be easier to do, but the overlay widget is bound to the inside of the window. I have added a new class called overlay. I hop Jan 2, 2020 · Inheriting from QPlainTextEdit although this could be any widget. We use the global_alpha value to obtain the semi-transparent overlay of the widget over the video. please assist me. Jun 14, 2018 · 0. not in a layout. Another way of achieving the same result is to override mouseMoveEvent() in your widget Dec 23, 2013 · Marko Knöbl. QObject): # SIGNALS. You can then decide of the rendering order of QPushButton and RectangleWidget by using QWidget::stackUnder Sep 8, 2015 · Qt, change widget overlay? 1. For custom overlays, inherit QGraphicsWidget and override the paint function to draw your custom widgets. This is probably messing with the overlay you're painting in your paintEvent. When the view is then used to move objects in the scene, or the scene itself, the items on the window remain in the same place. Jul 9, 2019 · I believe the best solution is to parent the so called overlay widget to the window or even have the overlay widget be in its own window. May 29, 2014 · Whatever Overlay is added last should be on top of the other items. QtGui import *. I've tried a number of suggestions, including setting the two widgets to the same cell in a grid layout. Setting on the test widget the FramelessWindowHint window flag and the WA_TranslucentBackgroung property will show a completely opaque white widget. QtWidgets. Defining a custom signal which is triggered when a mouse pressed event is captured in the floating button as we saw earlier. How it work. The problem is that I can't set background of overlay widget to be transparent. Inherit from the widget, override its onPaint method, forward it to the parent class to let it draw his stuff and then draw your own. You got black background for your widget, It happens because phonon backend might use XRender for video rendering. Hey guys I have a very difficult problem here, and I hope to get your help. Is it somehow possible to put other widgets or paint on top of the QVideoWidget? Jan 8, 2022 · I need to add two labels overlapping 2 QPushButton. Sometime after you start the pipeline it decides to plug in an actual renderer. A popup widget is a special top-level widget that sets the Qt::WType_Popup widget flag, e Sep 9, 2015 · I am trying to overlay a few buttons over my video player. This project provides an Overlay QWidget class, that can be used with a modal QDialog to darken the background over the dialog parent widget, and to attach a Blur graphics effect on the parent as well. Unable to make QQuickWidget background transparent without break stacking order. 501 1 6 15. 2) QDialog with QListView and custom item delegate. Overload resize to make sure button is always in the correct position. On code side, you can do it with QGridLayout. E. 4 How to add a widget (QPushButton for example) dynamically to a layout built in designer. viewfinder) It works ok, I see live video on a screen. – Oct 1, 2018 · Then in videoscreen. With the QGraphicsView widget, you can either visualize the whole scene, or zoom in and view only parts of the scene. overlay. In the image below the blue area is the qt overlay, in that picture I'm using GDI (BeginPaint/EndPaint) so and the windows seem to interact fine. Avoid using UI to place the widget because then the widget position is managed by the layouts. EDIT: Remember to create the widget after of the dialog's initialization. Oct 8, 2018 · 4) Create QVulkanWindow with parent newwidget->windowHandle () with following creation QLabel widget on newwidget parent. I've found that I can get the QQuickWidget to properly overlay the QWidget by using a combination of setAttribute (Qt::WA_AlwaysStackOnTop) and setClearColor (Qt::transparent). For example a widget that is a button that also contains a checkbox. Oct 14, 2017 · No, two widgets in the same layout can't overlay each other. Apr 11, 2017 · Tour my app - overlay widgets. According to the document link you give you're only going to get this QHoverEvent if your widget has the Qt::WA_Hover flag. Mar 16, 2020 · It is not like other widget if you create a new widget when you show it, you don't need to resize and the widgets in it's layout is right on their position. Call QWidget::winId to enforce a native window (this implies 3). Aug 8, 2012 · I'd like to make a single widget that combines the behavior of two existing widgets. Resizing needs to be done manually. 1) QMenu with QWidgetActions. stackingMode () const. Access functions: QStackedLayout::StackingMode. Hi Sirs, I want show video in video, using gstreamer on wayland (weston). Tue, 12/31/2013 - 15:54. gmail introduced a "select-all" button that displays a menu on click, but it also integrates a checkbox that selects all By default in Qt4, a QWidget will draw nothing for its own background, and only its children will be drawn. Feb 8, 2023 · I believe the root cause of this issue is because GStreamer is rendering the video to the native window using the video widget's winId() function. wrote on 16 Mar 2016, 19:11. void QGLWidget:: makeCurrent Makes this widget the current widget for OpenGL operations, i. If you don't take care about this your widget will be inserted at the bottom. Then pass the image to OpenGL and render it on top of the previous renders. In Qt Designer, you can extend a QWidget Jun 15, 2020 · All I've got now is an overlay widget that holds a QPainter rectangle that has a certain opacity and is black, as such : QPainter p{this}; p. Here's a short example written in Python. Thanks. overlay the widget onto the other widget and resize together much easy to add and maintain instead of create a New type of widget. e. Reimplement the widget you want to draw over, and do a wrapper method to avoid the protect clause of the paintEvent () method. This property determines the way visibility of child widgets are handled. Jun 4, 2013 · Qt part. The user can click the larger button but also the checkbox within. QGuiApplication:: platformNativeInterface (); struct wl_surface *surface = static_cast< struct wl_surface *>(. I am trying to overlay some widgets on a render_panel from librviz. Jul 13, 2022 · Hi! I'm having an issue where even though I use gst_video_overlay_set_window_handle () to set the window of a gstreamer pipeline to a qt video widget, it's still making its own window. e embedded systems ) - or when using the raster paint engine on a remote desktop - bit blitting is a noticeable operation, that needs to be avoided. One approach would be an explicit overpaint with a transparent brush, using the Source composition mode. 4 May 10, 2015 · As you may know, LibVLC uses Qt widgets to render video frames by getting only the WinID of the Qwidget and handles the rest itself. Qt includes a set of layout management classes that are used to describe how widgets are laid out in an application's user interface. I also hard coded the geometry of the tour widget. Only users with topic management privileges can see it. All widgets will be native widgets. Make your top level QWidget or QMainWindow frameless and make it to stay on top using window flags Qt::FramelessWindowHint and Qt::WindowStaysOnTopHint. Updating the text of the button which we’ll see later. Oct 30, 2016 · I just ommited to update the geometry of my widget. How could I implement this without QML? Set the Qt::AA_NativeWindows attribute on your application. What I did in my code is to overlay button onto the video. ("viewer" is the 3D view of the application) a = QPushButton ('TEST', viewer) Apr 19, 2018 · That means that MyWidget paints itself (by calling paintEvent()) before the QPushButton paints itself. You can put your Phonon::VideoWidget inside a QGraphicsProxyWidget and it becomes usable as a QGraphicsWidget. Then do OpenGL rendering. Display over it. You could try. pipeline = gst_parse_launch (. After that create widget from QWindow and create child QLabel for mentioned widget. camera = QCamera() self. So I was thinking maybe I can make the Sep 26, 2010 · Symbian/Maemo phones, Qt 4. It has no effect. webzoid. I imagine I can just call QWidget::raise () on the second page when a menu is needed. from PyQt5. 15 The Qt layout system provides a simple and powerful way of automatically arranging child widgets within a widget to ensure that they make good use of the available space. Something like it usually is taken care with Android/iOS applications. Quick Navigation Newbie Top. You can do that with any Qt widget by adding a child widget without adding it to the layout and positioning it manually. 15 May 10, 2022 · It's not particularly clear whet you want tbh, the image looks like a QSplitter May 10, 2022 · It's not particularly clear whet you want tbh, the image looks like a QSplitter Jun 3, 2018 · opengl. The point of a layout is to position your widgets in a predefined, user-friendly way. We use color keying of green (green = 0xff, red and blue both 0) #!/bin/sh KEY=255 GREEN_KEY=$((KEY * 256)) When using masks the widget below gets paint events for the masked regions of the overlay only. Librviz is using ogre and the panel has its own visualization manager. It seems to me that the background isn't handled well because this is essentially bypassing Qt to render the video and the background that shows up behind the overlay text is what Qt believes is Dec 30, 2021 · My idea is that I want to create a background label with an image of my board, and overlay a grid from labels on top of it, where I will use the code to upload images of my shapes. The sink used is the xvimagesink, falling back onto the ximagesink if the first cannot be created. 6. It's the actual job of the layout that they don't. So with that thing in mind, it is possible, with some Flag black magic, draw over the widget: 1. Feb 6, 2014 · N. Below is a very simple example of what I want. layout->setContentsMargins(0, 0, 0, 0); layout->addWidget(m_GraphicsView); layout->addWidget(m_ImageGL Nov 7, 2012 · Use QGraphicsView and QGraphicsWidgets. However this is a c++-code only way. One solution is draw first the controls (better in memory) and get a "screen shot" of it. viewfinder = QVideoWidget(self) self. Mar 17, 2016 · TryChen. A modal widget must be closed before the user can continue with other parts of the program. 5) Create new QWindow with parent QVulkanWindow. The default value is StackOne. I am on Qt 5. What I already tried: setPalette(Qt::transparent); setAttribute( Qt::WA_TranslucentBackground, true ); setAttribute( Qt::WA We have successfully been able to semi-transparently overlay Qt widgets on top of video using the below script. Jan 21, 2019 · As far as I know, there's only one way to stack widgets on top of each other, while using a layout. the following is the part of my code, let gstwaylandsink render on qt widget, QPlatformNativeInterface *native =. 27. widgets-scene3D demonstrates visualizing a 3D scene from a QWidget-based application using QQuickWidget. cpp, I also add the ControlBoard as sibling of QVideoWidget: QMainWindow(parent), ui(new Ui::VideoScreen), player(new QMediaPlayer) ui->setupUi(this); player->setVideoOutput(ui->videoScreen); ui->videoScreen->lower(); ControlBoard *cb = new ControlBoard(this); When I play a video, the result: How to make the ControlBoard be This topic has been deleted. For your convenience I paste the code from @armatita here as follows: import sys. i dont think its possible to implement in window paint event. Overload parent resize to automatically resize popup if open. 3. Besides that, there's little you can do: QMainWindow has its own way of managing its (internal) layout for dock widgets and tool bars, trying to effectively override it is extremely hard (and usually Overlay widget for Qt. . gst_init ( nullptr, nullptr ); // [2] Prepare the pipeline. 1. Dec 31, 2015 · I know I could overlay widgets by just specifying their parent child relation-ship. U. h ( cpp) that in turn used the X11 renderer ( gstreamer/x11renderer. Add button in correct position without layout. makes the widget's rendering context the current OpenGL rendering context. 4. However, this will cause the banner widget and display widget un-clickable (Because the first page is now underneath the second page). winapi creates button on top of vulkan window. Jun 25, 2018 · 2. I managed to get this to work. In addition to this highlight I would then have a popup window of some sort explaining the feature or widget. For this, the top-level widget needs to be set to allow translucency, and a child overlay widget covering the entire top-level widget would then overpaint transparency where needed. def __init__(self, parent=None, location="left"): A widget will be invalid if the system has no OpenGL support. The box model describes this in further detail. You may also want to look into some of the related window hints (mentioned in the documentation of the autoFillBackground setting). If you want to override that, you specifically have to tell the widget to draw its background via one of its properties. – Caleb Huitt - cjhuitt. I'm trying to regroup cards of the same suit, in order to achieve something like this (note that there is horizontal and vertical overlapping): Oct 23, 2019 · Here's what I get when showing a semi-transparent yellow QWidget partially overlaying the video: As you can see, under the yellow widget the video view background is shown, not the video. – rbaleksandar. One possible solution is to create a widget to draw the rectangle and make it a sibling of QPushButton (i. 15 Aug 7, 2023 · I think the graphical Designer doesn't really support overlapping widgets in a layout. Now I'm trying to display some additional info over the video, for example video title, duration etc. Though it may not be the best way of doing this, in the past I've added custom widgets to the window that holds the QGraphicsView / QGraphicsScene, which have the same graphic style as the QGraphicObjects in the scene. One of them (usually the top one) needs to be "free floating" i. Apr 25, 2013 · 1. QtWidgets import *. Apr 3, 2017 · I've been having a couple problems with this. from PySide import QtGui, QtCore. Mar 15, 2016 · I want to show a Qt button widget on the Gstreamer rendering widget, This is my source code for gstreamer waylandsink render on the QWidget, QPlatformNativeInterface *native = Jan 16, 2006 · The only widget allowed to draw there is to use that QWidget's QPainter object. How to use pip install dayu_widgets_overlay from dayu_widgets_overlay import MOverlay. #1. org/content/show. php?content=145 For a video player you are most likely going to need a video display widget, such as the gstreamer/videowidget. 15 Jul 16, 2013 · I want to show transparent widget over overlay widget which I give to mplayer. But I think I'm doing it in a wrong and inefficient way; for example, in OverlayWidget class I use setAttribute multiple times to enable and disable the MouseEvents and I'm not sure if it's the right May 10, 2022 · How can I have like a dock widget but allow it to be over other widgets? I have handcrafted a solution using calculated geometry, but it is far from optimal: Feb 2, 2021 · Qt Popup/Overlay Window. captureSession = QMediaCaptureSession() self. When I try to overlay something transparent on it (both the rviz scene and the overlay are children of a main, container widget), I get black pixels instead of the panel behind, also, a property animation on May 10, 2022 · Yes, it is like a splitter, but the splitter can not put one side over the other one, right? Try running the code and you will understand what I need, I can't post a video here Here is a quick/dirty example of a widget that can highlight other widgets for use in a tour. Cheers, _. Jun 6, 2010 · How do I draw interactive widgets such as QButtons and Line Edits over a QGraphicsView? For ex, I have selected a region over an image in an image editing app which displays an image with QGraphicsView, and I want to annotate this region with a name. This project is derived from the Order Form example. After constructing the widget call: widget->setAttribute(Qt::WA_Hover); and see if it works. Setup a QTimer to request window rect periodically and adjust the widget position. QStackedLayout. The image is placed in the parent widget, and does not have a widget for it's own. The actual 3D scene is the same as in the scene3d example. Apr 26, 2024 · This topic has been deleted. When changing the geometry, the widget, if visible, receives a move event (moveEvent()) and/or a resize event (resizeEvent()) immediately. QWidget background transparent. May 16, 2024 · QT QVulkanWindow overlay widgets. fillRect(rect(), {0, 0, 0, 200}); But the colors of the image behind are still visible obviously as all it does is darkening the image widget. I don't know how pyQt works for sure, but you may want to look into the autoFillBackground setting for QWidgets, and make sure it is false for your overlay. QGraphicsScene also provides functionality that lets you efficiently determine both the location of items, and for determining what items are visible within an arbitrary area on the scene. I am trying to make widgets overlap partly in a Qt layout. The video was added into this verticalLayout. If you want to do that there are multiple options including painting the widget yourself on top of everything, excluding the widget you want to overlap the rest from the layout and position it manually etc. Overriding resizeEvent so that we can update the position of the floating button. However, not for all pipelines. A modal widget is a special top-level widget which is a subclass of QDialog that specifies the modal parameter of the constructor as true. Oct 7, 2018 · Attempt to add QWidget::createWindowContainer of VulkanWindow and QLabel widget to one parent widget with QGridLayout or QVBoxLayout. setVideoOutput(self. setCamera(self. Jun 3, 2018 at 13:36. Make it transparent using attribute Qt::WA_TranslucentBackground. Jan 26, 2015 · Just create and place the widget on the fly. Otherwise Qt triggers full repaints. Create a window, Draw picture in paint event of window. You can add them to your scene and they will appear on top of your video widget. I am trying to see if there is a way to use in-application guided tours to help new users, highlight features in the software, show a demo, or as a substitute for initial steps to learn the absolute basics of the software. Or just manually (meaning in code, possibly overriding resizeEvent()) put the overlay widget directly as your login widget's child without putting it in layout. Introduction. the MainWindow background). Customizing Qt Widgets Using Style Sheets. This approach is different from the one based on QWidget::createWindowContainer () demonstrated in basicshapes-cpp because it does not create a native window for the Qt 3D content. In my centralWidget I have added a verticalLayout and morph it into a QWidget. That is QGridLayout. asked Jun 3, 2018 at 13:31. QBoxLayout): """Overlay widgets on a parent widget. autovideosink does not expose the GstVideoOverlay interface. According to Qt doc, the geometry property do this: This property holds the geometry of the widget relative to its parent and excluding the window frame. Python Qt Overlay Widget as a dayu_widgets plugin. Because it is not a real renderer but merely an auto-plug helper. void QGLWidget:: makeOverlayCurrent Makes the overlay context of this widget current. class TranslucentWidgetSignals(QtCore. Feb 7, 2023 · Qt Widgets + GStreamer + Overlay + Screen Capture. @ On the right side of the menu, there's a spacer to keep the menu on the left. You can see the result in the attached picture. At first B is over A and on the bottom left corner of A. Scheduled Pinned Locked Moved Unsolved General and Desktop c++ widgets gstreamer video overlay screenshot. User interfaces are made up of multiple widgets, arranged within the window. Create new QWindow with parent QVulkanWindow. This property was introduced in Qt 4. Bellow example of workaround, which can help you: This is subclass of Phonon::VideoWidget with overrided events methods. But I don't understand how I can overlay multiple widgets on top of each other in Layout. Kaushik Ramachandran. I use QMplayer wrapper for it: http://qt-apps. You should add a bus sync handler to check for the prepare overlay message and then do the video overlay calls. wrote on 14 Oct 2017, 02:52. 1 Reply Last reply 1 Sep 8, 2021 · In Qt (and most User Interfaces) ‘widget’ is the name given to a component of the UI that the user can interact with. Mar 2, 2018 · For a widget to be part of another widget there are 2 possibilities, the first is to use a layout, and the second is that the main widget is the father of the new widget, in the case of the first image we will use the first one, and for the second one we will use the second method. When using style sheets, every widget is treated as a box with four concentric rectangles: the margin rectangle, the border rectangle, the padding rectangle, and the content rectangle. Here's the code used to create that second widget: QWidget* test = new QWidget(m_mainContainer); test->resize(100, 100); May 31, 2017 · This widget will completely overlay the parent so also draw the popup box (drawRect in QPainter). But the problem I'm having is that all the mouse events are being directed Sep 9, 2015 · I would like to create a custom widget in Qt with the following features: It is a container It may be populated with any Qt layout It may be inside any Qt layout A button allows to collapse/fold Feb 7, 2023 · Qt Widgets + GStreamer + Overlay + Screen Capture. h, cpp ). To create an overlay that should stay on top of your video, follow the method Dec 6, 2021 · dayu_widgets_overlay. from PyQt5 import QtCore, QtGui, QtWidgets, QtMultimedia from GUI import Ui_MainWind Jun 20, 2018 · Generally mixing OpenGL renders and OS renders (used for buttons or other controls) is not a good idea. 5, c++, windows 10. """. My current layout is the following, achieved with a QVBoxLayout containing four QHBoxLayout children:. e child of MyWidget ). the addWidget functions allows you to place multiple widgets inside the same Cell and all will be effected by the Layout and it's resizing mechanism. – armatita. Setting the property to StackAll allows you to make use of the layout for overlay widgets that do additional drawing on top of other widgets, for example, graphical editors. Normally people don't overlap widgets. I created a QWidget and passed the handle to the DX to draw a 3D scenario for QWidget. PySide2. You can tabifyDockWidget() which results in having multiple dock widgets occupying the same space and switchable through a tabbed interface. May 5, 2022 · 1. Dec 26, 2012 · 1. Feb 7, 2023 · It seems to me that the background isn't handled well because this is essentially bypassing Qt to render the video and the background that shows up behind the overlay text is what Qt believes is there (i. But when a button is clicked, I want A appear over B and on the bottom left corner of B. I have a Qwidget to render video with LibVLC and I want to overlay a transparent Qlabel on this widget but when the widget starts showing the video, the label can not be transparent and stays with a background Jul 22, 2020 · The problem that I am having is that when I render with OpenGL, the OpenGL generated graphics seem to obscure the graphics area including and effectively undo the graphics composited by qt. But if I have two widgets, say A and B. Mar 9, 2022 · I want to be able to create a dark overlay on top of other widgets that can be turned on or off with animation. If you go with the second solution, you will have to play with the windows flags to make it borderless. widget (arg__1) ¶ Parameters Dec 3, 2017 · The QQuickWidget contains some buttons and a couple other widgets laid out along the bottom. Jul 9, 2019 · Re: Qt / PyQt - Overlay widget. Create QVulkanWindow with parent newwidget->windowHandle () with following creation QLabel widget on newwidget parent. Qt comes with a large selection of widgets available, and even allows you to create your own custom and customized widgets. Note that some widgets derived from QWidget will automatically draw backgrounds. Apr 26, 2017 · steps i am following to do. Then create QGridLayout layout, add your window. – Matteo Italia. qt_activex_widget->show();@ The control is shown properly but the "test" widget that is supposed to be red and semi-transparent is completely opaque. suppose i want to add progress bar, over a portion of picture window. vp mh cg go oj zg wv rp df yf