I am working on QT v5.2
I need to hide the blinking cursor (caret) of QLineEdit permanently.
But at the same time, I want the QLineEdit to be editable (so readOnly and/or setting editable false is not an option for me).
I am already changing the Background color of the QLineEdit when it is in focus, so I will know which QLineEdit widget is getting edited.
For my requirement, cursor (the blinking text cursor) display should not be there.
I have tried styleSheets, but I can't get the cursor hidden ( {color:transparent; text-shadow:0px 0px 0px black;} )
Can someone please let me know how can I achieve this?
There is no standard way to do that, but you can use setReadOnly method which hides the cursor. When you call this method it disables processing of keys so you'll need to force it.
Inherit from QLineEdit and reimplement keyPressEvent.
LineEdit::LineEdit(QWidget* parent)
: QLineEdit(parent)
{
setReadOnly(true);
}
void LineEdit::keyPressEvent(QKeyEvent* e)
{
setReadOnly(false);
__super::keyPressEvent(e);
setReadOnly(true);
}
As a workaround you can create a single line QTextEdit and set the width of the cursor to zero by setCursorWidth.
For a single line QTextEdit you should subclass QTextEdit and do the following:
Disable word wrap.
Disable the scroll bars (AlwaysOff).
setTabChangesFocus(true).
Set the sizePolicy to (QSizePolicy::Expanding, QSizePolicy::Fixed)
Reimplement keyPressEvent() to ignore the event when Enter/Return is hit
Reimplement sizeHint to return size depending on the font.
The implementation is :
#include <QTextEdit>
#include <QKeyEvent>
#include <QStyleOption>
#include <QApplication>
class TextEdit : public QTextEdit
{
public:
TextEdit()
{
setTabChangesFocus(true);
setWordWrapMode(QTextOption::NoWrap);
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
setFixedHeight(sizeHint().height());
}
void keyPressEvent(QKeyEvent *event)
{
if (event->key() == Qt::Key_Return || event->key() == Qt::Key_Enter)
event->ignore();
else
QTextEdit::keyPressEvent(event);
}
QSize sizeHint() const
{
QFontMetrics fm(font());
int h = qMax(fm.height(), 14) + 4;
int w = fm.width(QLatin1Char('x')) * 17 + 4;
QStyleOptionFrameV2 opt;
opt.initFrom(this);
return (style()->sizeFromContents(QStyle::CT_LineEdit, &opt, QSize(w, h).
expandedTo(QApplication::globalStrut()), this));
}
};
Now you can create an instance of TextEdit and set the cursor width to zero :
textEdit->setCursorWidth(0);
Most straight forward thing I found was stolen from this github repo:
https://github.com/igogo/qt5noblink/blob/master/qt5noblink.cpp
Basically you just want to disable the internal "blink timer" Qt thinks is somehow good UX (hint blinking cursors never were good UX and never will be - maybe try color or highlighting there eh design peeps).
So the code is pretty simple:
from PyQt5 import QtGui
app = QtGui.QApplication.instance()
app.setCursorFlashTime(0)
voilà.
Solution in python:
# somelibraries
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
self.layout = QVBoxLayout()
self.setFocus() # this is what you need!!!
container = QWidget()
container.setLayout(self.layout)
# Set the central widget of the Window.
self.setCentralWidget(container)
app = QApplication(sys.argv)
window = MainWindow()
window.show()
app.exec()
I ran into the same problem but setReadOnly is not a viable option because it alters the UI behavior in other places too.
Somewhere in a Qt-forum I found the following solution that actually solves the problem exactly where it occurs without having impact on other parts.
In the first step you need to derive from QProxyStyle and overwrite the pixelMetric member function:
class CustomLineEditProxyStyle : public QProxyStyle
{
public:
virtual int pixelMetric(PixelMetric metric, const QStyleOption* option = 0, const QWidget* widget = 0) const
{
if (metric == QStyle::PM_TextCursorWidth)
return 0;
return QProxyStyle::pixelMetric(metric, option, widget);
}
};
The custom function simply handles QStyle::PM_TextCursorWidth and forwards otherwise.
In your custom LineEdit class constructor you can then use the new Style like this:
m_pCustomLineEditStyle = new CustomLineEditProxyStyle();
setStyle(m_pCustomLineEditStyle);
And don't forget to delete it in the destructor since the ownership of the style is not transferred (see documentation). You can, of course, hand the style form outside to your LineEdit instance if you wish.
Don't get complicated:
In QtDesigner ,
1.Go the the lineEdit 's property tab
2.Change focusPolicy to ClickFocus
That's it...
Related
This a modified question I have posted on this forum.
It is not a repost, for two reasons - I cannot edit the other post and I am trying to
resolve this issue from another angle. Besides the other post got derailed by people who mean well but did not really read the post.
I have a working C++ code which is using (QT) QTextEdit class to collect and process text data.
The class - as its name suggest - was designed to collect and analyze text.
The text is displayed in "view " area.
My task is to select ONE word of text and drag it to another GUI object.
I like to put the text being dragged into QT standard "status bar".
Normal QT GUI widgets are designed using QTDesigner. Integral part of such design process
is "layout".
As it stands , QTextEdit DOES NOT HAVE / USE "layout" or use it but it is NOT visible / accessible when QTextEdit is implemented - there is no need for it.
In order to add "status bar" I need to MODIFY the view to hold the current text editing
"layout" and add "status bar " layout.
I am unable to figure out how to get access to the QTextEdit class GUI layout.
I am asking for help to accomplish that- how to add "status bar" to EXISTING QTextEdit.
Please read the post carefully _ I need help with how to add "status bar" to EXISTING QTextEdit.
I do have an option to replace the QTextEdit with basic "widget" class but it "breaks " the working code and I rather not do that.
I did look into setting multiple inheritance - Qwidget and QTextEdit but did not work.
PLEASE Mr Higgins , editing my post for proper English grammar and composition DOES NOT solve the problem. So , please - don't.
I'm not entirely sure but your question seems to imply that inheriting from QTextEdit would be acceptable. If that's the case then you can probably make use of the fact that QTextEdit itself inherits QAbstractScrollArea and use the viewport margins to create an area in which to show a status bar of some sort.
Consider the following code...
#include <QApplication>
#include <QScrollBar>
#include <QStatusBar>
#include <QTextEdit>
namespace {
class text_edit: public QTextEdit {
using super = QTextEdit;
public:
explicit text_edit (QWidget *parent = nullptr)
: super(parent)
, m_status(this)
{
m_status.setStyleSheet("background-color: gray;");
m_status.showMessage("Status text goes here...");
show_status(true);
horizontalScrollBar()->installEventFilter(this);
verticalScrollBar()->installEventFilter(this);
setLineWrapMode(QTextEdit::NoWrap);
}
protected:
virtual bool eventFilter (QObject *obj, QEvent *event) override
{
if (event->type() == QEvent::Show || event->type() == QEvent::Hide)
update_status_geometry();
return super::eventFilter(obj, event);
}
virtual void resizeEvent (QResizeEvent *event) override
{
super::resizeEvent(event);
update_status_geometry();
}
private:
void show_status (bool on)
{
if (on) {
setViewportMargins(0, 0, 0, m_status.height());
m_status.show();
} else {
setViewportMargins(0, 0, 0, 0);
m_status.hide();
}
}
void update_status_geometry ()
{
/*
* Calculate initial geometry of the QStatusBar based on its size hint.
*/
auto s = m_status.sizeHint();
s.rwidth() = width();
QRect geom(QPoint(0, 0), s);
geom.moveTop(height() - s.height());
/*
* Adjust the status bar geometry to allow for the scroll bars.
*/
if (horizontalScrollBar()->isVisible())
geom.moveTop(geom.top() - horizontalScrollBar()->height());
if (verticalScrollBar()->isVisible())
geom.setRight(geom.right() - verticalScrollBar()->width());
m_status.setGeometry(geom);
}
QStatusBar m_status;
};
}
int
main (int argc, char **argv)
{
QApplication app(argc, argv);
text_edit te;
te.show();
return app.exec();
}
Running the code above results in the following widget...
I have added a QToolButton as corner widget in QTabWidget which is checkable. I want to hide all tabs (panes only) when the tool button is unchecked. I tried to connect button's signal clicked(bool) with all tab's setVisible(bool) slot not working but. I also connected tabwidget's setvisible to the signal but complete widget became invisible(it was a silly trial). Is there any way to make only pane invisible and tab bar will not disappear ?
Edit: Code (ui have a tabwidget and two tabs namely tab and tab_2)
ui->setupUi(this);
QToolButton * b = new QToolButton;
b->setCheckable(true);
b->setChecked(true);
b->setAutoRaise(true);
b->setText("Hide Tabs");
ui->tabWidget->setCornerWidget(b);
connect(b,SIGNAL(clicked()),ui->tab,SLOT(hide()));
connect(b,SIGNAL(clicked()),ui->tab_2,SLOT(hide()));
Use qFindChild to find the QTabBar within the QTabWidget:
QTabBar *tabBar = qFindChild<QTabBar *>(ui->tabWidget);
tabBar->hide();
For Qt5:
QTabBar *tabBar = ui->tabWidget->findChild<QTabBar *>();
tabBar->hide();
so I understand it like this, you want to hide the TabBar and let the tab visible. Or at least that's what I get from your question
Well if that the case all you have to do it's this:
connect(ui->pushButton,SIGNAL(clicked()),ui->tabWidget->tabBar(),SLOT(hide()));
I hope this was helpful, even do the questions in a little old, I though it may help new viewers.
Here is my take on this. I've created a class that inherits QTabWidget. What I do is; set the "maximum vertical size of QTabWidget" to its tabBars height to hide the panels.
It is a hacky solution and I had to add some extra lines to deal with quirks.
file: hidabletabwidget.h
#ifndef HIDABLETABWIDGET_H
#define HIDABLETABWIDGET_H
#include <QTabWidget>
#include <QAction>
class HidableTabWidget : public QTabWidget
{
Q_OBJECT
public:
explicit HidableTabWidget(QWidget *parent = 0);
QAction hideAction;
private slots:
void onHideAction(bool checked);
void onTabBarClicked();
};
#endif // HIDABLETABWIDGET_H
file: hidablewidget.cpp
#include "hidabletabwidget.h"
#include <QTabBar>
#include <QToolButton>
HidableTabWidget::HidableTabWidget(QWidget *parent) :
QTabWidget(parent),
hideAction("▾", this)
{
hideAction.setCheckable(true);
hideAction.setToolTip("Hide Panels");
QToolButton* hideButton = new QToolButton();
hideButton->setDefaultAction(&hideAction);
hideButton->setAutoRaise(true);
this->setCornerWidget(hideButton);
connect(&hideAction, SIGNAL(toggled(bool)), this, SLOT(onHideAction(bool)));
connect(this, SIGNAL(tabBarClicked(int)), this, SLOT(onTabBarClicked()));
}
void HidableTabWidget::onHideAction(bool checked)
{
if (checked)
{
this->setMaximumHeight(this->tabBar()->height());
this->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum);
}
else
{
this->setMaximumHeight(QWIDGETSIZE_MAX); // by default widgets can expand to a maximum sized defined by this macro
this->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
}
}
void HidableTabWidget::onTabBarClicked()
{
hideAction.setChecked(false);
}
To use this, you can simply "promote" your QTabWidget to "HidableTabWidget" using qt designer.
And here is how it looks on my system:
You usually want to remove the Tab from the QTabWidget:
void QTabWidget::removeTab ( int index )
The Tab removed will not be deleted and can be reinserted!
So you would connect your QToolButton b to a slot which simply removes the Tabs like this:
connect( b, SIGNAL(clicked()), this, SLOT(hideTabs() );
..
void Foobar::hideTabs( void )
{
for( int i = 0; i < ui->tabWidget->count(); ++i )
ui->tabWidget->removeTab(i);
}
I can not comment due to my low "reputation" so far. If I could I'd just add a comment to Anatoli's answer: the goal is to hide "page area", not "tab bar". So if we imply they always use QStackedWidget for that then the answer should be more like:
auto * tab_pane = qFindChild<QStackedWidget *>(ui->tabWidget);
tab_pane->hide();
or for Qt5:
auto * tab_pane = ui->tabWidget->findChild<QStackedWidget *>();
tab_pane->hide();
I copied the question description below from other asked but not answered question, because this is the exactly the same one I wanna ask.
I have a QMenu with a translucent background and rounded edges (border-radius). Unfortunately, Windows 7 draws a drop shadow for this menu, which does not fit to the rounded edges. Its the shadow that would be drawn for normal rectangular menus.
Is there either - a way to completely disable drawing drop shadows for QMenu or - a way to make the shadow fit to the rounded edges ?
Here is a minimalistic example where it occurs:
QPushButton b("press me");
QMenu m;
m.addAction("hello"); m.addAction("world");
m.setWindowFlags(m.windowFlags() | Qt::FramelessWindowHint);
m.setAttribute(Qt::WA_TranslucentBackground);
m.setStyleSheet("background:rgba(255,0,0,50%); border-radius:5px;");
b.setMenu(&m);
b.show();
Right now I have to turn off the menu shadow in Windows Control panel manually to get rid of that shadow.
Actually what I want to achieve is a menu like Qt's pie menu or a menu like this one:
http://upload.wikimedia.org/wikipedia/commons/8/85/Blender_2.36_Screenshot.jpg
I tried the popup widget, but it gets the shadow artifact described above.
Could anyone help this out?
On Windows Vista and higher, I wanted a menu with normal window shadow. So I had to do two things:
Remove CS_DROPSHADOW from the menu HWND's WNDCLASS that Qt is adding deep down in the core.
Add shadow using DWM APIs.
The trick is to capture QEvent::WinIdChange to get the HWND handle to the menu window, and then to use GetClassLong / SetClassLong to remove CS_DROPSHADOW flag. I'm doing this only once (by using a static bool), as theWNDCLASS is always the same for all menus. This might lead into a problem if part of your app wants to show the menu shadows and other does not.
I have subclassed the QMenu and I'm always using my overriden class when creating menus
Menu * my_menu = new Menu(tr("&File"));
mainMenu->addMenu(my_menu);
Here's the whole code, enjoy:
menu.h
#ifndef MENU_H
#define MENU_H
#include <QMenu>
class Menu : public QMenu
{
Q_OBJECT
public:
explicit Menu(QWidget *parent = 0);
explicit Menu(const QString & title);
protected:
virtual bool event(QEvent *event);
signals:
public slots:
};
#endif // MENU_H
menu.cpp
#include "menu.h"
#pragma comment( lib, "dwmapi.lib" )
#include "dwmapi.h"
Menu::Menu(QWidget *parent) :
QMenu(parent)
{
}
Menu::Menu(const QString &title) :
QMenu(title)
{
}
bool Menu::event(QEvent *event)
{
static bool class_amended = false;
if (event->type() == QEvent::WinIdChange)
{
HWND hwnd = reinterpret_cast<HWND>(winId());
if (class_amended == false)
{
class_amended = true;
DWORD class_style = ::GetClassLong(hwnd, GCL_STYLE);
class_style &= ~CS_DROPSHADOW;
::SetClassLong(hwnd, GCL_STYLE, class_style);
}
DWMNCRENDERINGPOLICY val = DWMNCRP_ENABLED;
::DwmSetWindowAttribute(hwnd, DWMWA_NCRENDERING_POLICY, &val, sizeof(DWMNCRENDERINGPOLICY));
// This will turn OFF the shadow
// MARGINS m = {0};
// This will turn ON the shadow
MARGINS m = {-1};
HRESULT hr = ::DwmExtendFrameIntoClientArea(hwnd, &m);
if( SUCCEEDED(hr) )
{
//do more things
}
}
return QWidget::event(event);
}
I just remove the Qt::popup flag to get rid of the shadow.
And I have to add close codes to any other background UI. These have been more extra work, but I got what I want :)
I've got a window full of QPushButtons and QLabels and various other fun QWidgets, all layed out dynamically using various QLayout objects... and what I'd like to do is occasionally make some of those widgets become invisible. That is, the invisible widgets would still take up their normal space in the window's layout, but they wouldn't be rendered: instead, the user would just see the window's background color in the widget's rectangle/area.
hide() and/or setVisible(false) won't do the trick because they cause the widget to be removed from the layout entirely, allowing other widgets to expand to take up the "newly available" space; an effect that I want to avoid.
I suppose I could make a subclass of every QWidget type that override paintEvent() (and mousePressEvent() and etc) to be a no-op (when appropriate), but I'd prefer a solution that doesn't require me to create three dozen different QWidget subclasses.
This problem was solved in Qt 5.2. The cute solution is:
QSizePolicy sp_retain = widget->sizePolicy();
sp_retain.setRetainSizeWhenHidden(true);
widget->setSizePolicy(sp_retain);
http://doc.qt.io/qt-5/qsizepolicy.html#setRetainSizeWhenHidden
The only decent way I know of is to attach an event filter to the widget, and filter out repaint events. It will work no matter how complex the widget is - it can have child widgets.
Below is a complete stand-alone example. It comes with some caveats, though, and would need further development to make it complete. Only the paint event is overridden, thus you can still interact with the widget, you just won't see any effects.
Mouse clicks, mouse enter/leave events, focus events, etc. will still get to the widget. If the widget depends on certain things being done upon an a repaint, perhaps due to an update() triggered upon those events, there may be trouble.
At a minimum you'd need a case statement to block more events -- say mouse move and click events. Handling focus is a concern: you'd need to move focus over to the next widget in the chain should the widget be hidden while it's focused, and whenever it'd reacquire focus.
The mouse tracking poses some concerns too, you'd want to pretend that the widget lost mouse tracking if it was tracking before. Properly emulating this would require some research, I don't know off the top of my head what is the exact mouse tracking event protocol that Qt presents to the widgets.
//main.cpp
#include <QEvent>
#include <QPaintEvent>
#include <QWidget>
#include <QLabel>
#include <QPushButton>
#include <QGridLayout>
#include <QDialogButtonBox>
#include <QApplication>
class Hider : public QObject
{
Q_OBJECT
public:
Hider(QObject * parent = 0) : QObject(parent) {}
bool eventFilter(QObject *, QEvent * ev) {
return ev->type() == QEvent::Paint;
}
void hide(QWidget * w) {
w->installEventFilter(this);
w->update();
}
void unhide(QWidget * w) {
w->removeEventFilter(this);
w->update();
}
Q_SLOT void hideWidget()
{
QObject * s = sender();
if (s->isWidgetType()) { hide(qobject_cast<QWidget*>(s)); }
}
};
class Window : public QWidget
{
Q_OBJECT
Hider m_hider;
QDialogButtonBox m_buttons;
QWidget * m_widget;
Q_SLOT void on_hide_clicked() { m_hider.hide(m_widget); }
Q_SLOT void on_show_clicked() { m_hider.unhide(m_widget); }
public:
Window() {
QGridLayout * lt = new QGridLayout(this);
lt->addWidget(new QLabel("label1"), 0, 0);
lt->addWidget(m_widget = new QLabel("hiding label2"), 0, 1);
lt->addWidget(new QLabel("label3"), 0, 2);
lt->addWidget(&m_buttons, 1, 0, 1, 3);
QWidget * b;
b = m_buttons.addButton("&Hide", QDialogButtonBox::ActionRole);
b->setObjectName("hide");
b = m_buttons.addButton("&Show", QDialogButtonBox::ActionRole);
b->setObjectName("show");
b = m_buttons.addButton("Hide &Self", QDialogButtonBox::ActionRole);
connect(b, SIGNAL(clicked()), &m_hider, SLOT(hideWidget()));
QMetaObject::connectSlotsByName(this);
}
};
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Window w;
w.show();
return a.exec();
}
#include "main.moc"
You can use a QStackedWidget. Put your button on the first page, a blank QWidget on the second, and change the page index to make your button vanish while retaining its original space.
I've 3 solutions in my mind:
1) Subclass your QWidget and use a special/own setVisible() replacement method witch turns on/off the painting of the widget (if the widget should be invisible simply ignore the painting with an overridden paintEvent() method). This is a dirty solution, don't use it if you can do it other ways.
2) Use a QSpacerItem as a placeholder and set it's visibility to the opposite of the QWidget you want to hide but preserve it's position+size in the layout.
3) You can use a special container widget (inherit from QWidget) which gets/synchronizes it's size based on it's child/children widgets' size.
I had a similar problem and I ended up putting a spacer next to my control with a size of 0 in the dimension I cared about and an Expanding sizeType. Then I marked the control itself with an Expanding sizeType and set its stretch to 1. That way, when it's visible it takes priority over the spacer, but when it's invisible the spacer expands to fill the space normally occupied by the control.
May be QWidget::setWindowOpacity(0.0) is what you want? But this method doesn't work everywhere.
One option is to implement a new subclass of QWidgetItem that always returns false for QLayoutItem::isEmpty. I suspect that will work due to Qt's QLayout example subclass documentation:
We ignore QLayoutItem::isEmpty(); this means that the layout will treat hidden widgets as visible.
However, you may find that adding items to your layout is a little annoying that way. In particular, I'm not sure you can easily specify layouts in UI files if you were to do it that way.
Here's a PyQt version of the C++ Hider class from Kuba Ober's answer.
class Hider(QObject):
"""
Hides a widget by blocking its paint event. This is useful if a
widget is in a layout that you do not want to change when the
widget is hidden.
"""
def __init__(self, parent=None):
super(Hider, self).__init__(parent)
def eventFilter(self, obj, ev):
return ev.type() == QEvent.Paint
def hide(self, widget):
widget.installEventFilter(self)
widget.update()
def unhide(self, widget):
widget.removeEventFilter(self)
widget.update()
def hideWidget(self, sender):
if sender.isWidgetType():
self.hide(sender)
I believe you could use a QFrame as a wrapper. Although there might be a better idea.
Try void QWidget::erase (). It works on Qt 3.
I have a QLabel with a 'StyledPanel, raised' frame.
It is clickable, by subclassing QLabel;
class InteractiveLabel(QtGui.QLabel):
def __init__(self, parent):
QtGui.QLabel.__init__(self, parent)
def mouseReleaseEvent(self, event):
self.emit(QtCore.SIGNAL('clicked()'))
However, a general opinion is that this 'Box' is not easily recognised as clickable.
In an effort toward usability, I'd like the 'Box' to show it is clickable when the mouse is hovered over it.
Obviously a reaction to a mouse hover is easily achieved by connecting the mouseHoverEvent.
However, the 'button indicator' must be natively inherited, since my Qt application allows the User to change the style (out of Windows XP, Windows 7, plastique, motif, cde).
This image shows the particular widget (bottom right corner) and the mouseHover aesthetics I desire in two different styles.
When a mouse is hovered over 'Box', I'd like it to respond like the combobox has in the top, middle.
(The 'response' is aesthetically native and occurs with all Qt buttons, except in 'CDE' and 'motif'styles.).
Is there a way to implement this with PyQt4?
(I suppose non-native solutions would involve QGradient and checking the native style, but that's yucky.)
UPDATE:
lol4t0's idea of a QLabel over a QPushButton.
Here's my pythonic implementation with signals working properly and all the appropriate button aesthetics.
The RichTextBox is the widget you would embed into the program.
from PyQt4 import QtCore, QtGui
class RichTextButton(QtGui.QPushButton):
def __init__(self, parent=None):
QtGui.QPushButton.__init__(self, parent)
self.UnitText = QtGui.QLabel(self)
self.UnitText.setTextInteractionFlags(QtCore.Qt.NoTextInteraction)
self.UnitText.setAlignment(QtCore.Qt.AlignCenter)
self.UnitText.setMouseTracking(False)
self.setLayout(QtGui.QVBoxLayout())
self.layout().setMargin(0)
self.layout().addWidget(self.UnitText)
Thanks!
Specs:
- python 2.7.2
- Windows 7
- PyQt4
Main idea
You can add QLabelabove QPushButton (make QLabel child of QPushButton) and show rich text in label, while clicks and decorations can be processed with QPushButton
Experiment
Well, I am a C++ programmer, but there is nothing complicated, I hope, you understand the code
Implementing main idea:
QLabel * label = new QLabel(pushButton);
label->setText("<strong>sss</strong>");
label->setAlignment(Qt::AlignCenter);
label->setMouseTracking(false);
pushButton->setLayout(new QVBoxLayout(pushButton));
pushButton->layout()->setMargin(0);
pushButton->layout()->addWidget(label);
And this almost works! The only one silly bug (or my global misunderstanding) is that when you press button with mouse and then release it, it remains pressed.
- So, it seems we need to reimplement mouseReleaseEvent in our label to fix always pressed issue:
I'm pretty sure, there is a bit more elegant solution, but I'm too lazy to find it now, so, I made following:
class TransperentLabel: public QLabel
{
public:
TransperentLabel(QWidget* parent):QLabel(parent) {}
protected:
void mouseReleaseEvent(QMouseEvent *ev)
{
/*
QApplication::sendEvent(parent(), ev); -- does not help :(
*/
static_cast<QPushButton*>(parent())->setDown(false);
static_cast<QPushButton*>(parent())->click(); //fixing click signal issues
}
};
As #Roku said, to fix that issue, we have to add
label->setTextInteractionFlags(Qt::NoTextInteraction);
#Lol4t0, i have some improvements for your method...
This is my header file:
#ifndef QLABELEDPUSHBUTTON_H
#define QLABELEDPUSHBUTTON_H
#include <QPushButton>
class QLabel;
class QLabeledPushButton : public QPushButton
{
Q_OBJECT
QLabel * m_label;
public:
QLabeledPushButton(QWidget * parent = 0);
QString text() const;
void setText(const QString & text);
protected:
void resizeEvent(QResizeEvent * event);
};
#endif // QLABELEDPUSHBUTTON_H
And there is my cpp file:
#include <QLabel>
#include <QVBoxLayout>
#include <QResizeEvent>
#include "QLabeledPushButton.h"
QLabeledPushButton::QLabeledPushButton(QWidget * parent)
: QPushButton(parent)
, m_label(new QLabel(this))
{
m_label->setWordWrap(true);
m_label->setMouseTracking(false);
m_label->setAlignment(Qt::AlignCenter);
m_label->setTextInteractionFlags(Qt::NoTextInteraction);
m_label->setGeometry(QRect(4, 4, width()-8, height()-8));
}
QString QLabeledPushButton::text() const
{
return m_label->text();
}
void QLabeledPushButton::setText(const QString & text)
{
m_label->setText(text);
}
void QLabeledPushButton::resizeEvent(QResizeEvent * event)
{
if (width()-8 < m_label->sizeHint().width())
setMinimumWidth(event->oldSize().width());
if (height()-8 < m_label->sizeHint().height())
setMinimumHeight(event->oldSize().height());
m_label->setGeometry(QRect(4, 4, width()-8, height()-8));
}
So text on QLabel is always visible. QPushButton can't be too small to hide part of text. I think this way is more comfortable to use...