In the picture below, the first QComboBox is disabled:
I want to emphasize the fact that the value cannot be changed by removing the arrow of disabled QComboBoxes.
I've tried modifying the stylesheet already being used to:
QComboBox::down-arrow:disabled {
border: 0;
background: transparent;
image: none;
height: 0;
width: 0;
}
But it doesn't solve the issue and conflicts with my current style (set using qApp->setStyle("fusion")):
How can I get it?
The trick can be done by using a QProxyStyle and returning a null QRect for the arrow subcontrol (QProxyStyle::subControlRect). A QProxyStyle allows you to vary specific behaviours of a style without the need of implementing a whole new one (it wraps the original style).
class MyProxyStyle : public QProxyStyle {
public:
MyProxyStyle(const QString& base_style_name) : QProxyStyle(base_style_name) {}
QRect MyProxyStyle::subControlRect(QStyle::ComplexControl cc,
const QStyleOptionComplex* option,
QStyle::SubControl sc,
const QWidget* widget) const override
{
if (cc == CC_ComboBox && sc == SC_ComboBoxArrow && !widget->isEnabled()) return QRect();
return QProxyStyle::subControlRect(cc, option, sc, widget);
}
};
// ...
qApp->setStyle(new MyProxyStyle("fusion"));
Result:
Related
I want to change the color of a single tab, please see screenshot below. The FOO_SUPtab should be red (right now only the button is), all others not.
For the text color there is bar->setTabTextColor(index, QColor(Qt::red)), but not the whole tab. Setting the tab stylesheet for the tab widget changes the color of all tabs.
I have found a stylesheet to change the tab color here: https://stackoverflow.com/a/21687821/356726 but not for a single tab, also I need to be able to decide at runtime if the tab is red or not.
Just to make clear, the widget below shall remain black, the tab only red.
One option would be to implement your own tab bar (as explained here).
Anyway, I find more useful and cleaner the use of a proxy style, since it allows you to partially override the painting without need to use inheritance for the tab bar. It will allow you also to easily apply the new style to existing controls.
It can be something like:
class TabBackgroundProxyStyle : public QProxyStyle {
public:
TabBackgroundProxyStyle(const QString& base_style_name, const QMap<QString, QBrush>& backgrounds)
: QProxyStyle(base_style_name),
m_backgrounds(backgrounds) {
}
void drawControl(ControlElement element, const QStyleOption* option, QPainter* painter, const QWidget* widget) const override {
if (element == CE_TabBarTab) {
if (auto tab = qstyleoption_cast<const QStyleOptionTab*>(option)) {
if (m_backgrounds.contains(tab->text)) {
QStyleOptionTab opt(*tab);
opt.palette.setBrush(QPalette::Background, m_backgrounds[tab->text]);
return QProxyStyle::drawControl(element, &opt, painter, widget);
}
}
}
QProxyStyle::drawControl(element, option, painter, widget);
}
private:
const QMap<QString, QBrush> m_backgrounds;
};
To use it, just create the style with the appropriate tabs-color mapping (examples using C++11):
auto theTabWidget = new QTabWidget();
for (int ii = 0; ii < 10; ++ii) theTabWidget->addTab(new QWidget(), QString("Tab %1").arg(ii + 1));
const QMap<QString, QBrush> backgrounds = {
{"Tab 2", QBrush(Qt::red)},
{"Tab 3", QBrush("#c0b050")},
};
theTabWidget->tabBar()->setStyle(new TabBackgroundProxyStyle("", backgrounds));
If your user interface allows the tab's text to change on runtime (e.g., on-the-fly translations, or the text is a filename...) then you must modify the map accordingly.
The use of the tab's label for indexing is because the style option doesn't store any other direct information about the tab (not even the associated widget, because QTabBar is in charge of rendering only the tabs, it is not the container).
Another option would be to check the tab's rectangle, not much time-consuming for tab bars with just a few dozens of tabs, and more versatile if you don't want to deal with labels:
class TabBackgroundProxyStyle : public QProxyStyle {
public:
TabBackgroundProxyStyle(const QString& base_style_name, const QMap<int, QBrush>& backgrounds)
: QProxyStyle(base_style_name),
m_backgrounds(backgrounds) {
}
void drawControl(ControlElement element, const QStyleOption* option, QPainter* painter, const QWidget* widget) const override {
if (element == CE_TabBarTab) {
if (auto tab = qstyleoption_cast<const QStyleOptionTab*>(option)) {
auto tabBar = qobject_cast<const QTabBar*>(widget);
for (auto index : m_backgrounds.keys()) {
if (tab->rect == tabBar->tabRect(index)) {
QStyleOptionTab opt(*tab);
opt.palette.setBrush(QPalette::Background, m_backgrounds[index]);
return QProxyStyle::drawControl(element, &opt, painter, widget);
}
}
}
}
QProxyStyle::drawControl(element, option, painter, widget);
}
private:
const QMap<int, QBrush> m_backgrounds;
};
Use:
auto theTabWidget = new QTabWidget();
for (int ii = 0; ii < 10; ++ii) theTabWidget->addTab(new QWidget(), QString("Tab %1").arg(ii + 1));
const QMap<int, QBrush> backgrounds = {
{1, QBrush(Qt::red)},
{4, QBrush("#c0b050")},
};
theTabWidget->tabBar()->setStyle(new TabBackgroundProxyStyle("", backgrounds));
Full source code can be downloaded from https://github.com/cbuchart/stackoverflow/tree/master/54070408-change-color-of-single-qtabwidget-tab
IMPORTANT: The main drawback of this solution is that it doesn't mix well with existing stylesheet for tabs: you have to disable/comment the stylesheets for QTabBar::tab in order to be able to apply the style.
I have a large log data (100, 1000, 100000, ... records) and I want to visualize it in the following manner:
Which widget (e.g. QListView, QListWidget) should I use and how, in order to stay away from performance and memory problems?
Is it possible to add a custom widget into a QListView?
Please, read about:
How to display a scrollable list with a substantial amount of widgets as items in a Qt C++ app?
I want to show every log message in the above format
Solution
To achieve the desired result and stay away from performance issues, even with a very long data log, use a QListView with a custom delegate:
Create a subclass of QStyledItemDelegate, say Delegate
Reimplement the QStyledItemDelegate::paint method to do the custom drawing
Reimplement the QStyledItemDelegate::sizeHint to report the correct size of the items in the list
Use the custom delegate in the view by calling QAbstractItemView::setItemDelegate
Example
I have prepared a working example for you in order to demonstrate how the proposed solution could be implemented and used in an application.
The essential part of the example is the way the delegate paints the items in the list view:
void Delegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
QStyleOptionViewItem opt(option);
initStyleOption(&opt, index);
const QPalette &palette(opt.palette);
const QRect &rect(opt.rect);
const QRect &contentRect(rect.adjusted(m_ptr->margins.left(),
m_ptr->margins.top(),
-m_ptr->margins.right(),
-m_ptr->margins.bottom()));
const bool lastIndex = (index.model()->rowCount() - 1) == index.row();
const bool hasIcon = !opt.icon.isNull();
const int bottomEdge = rect.bottom();
QFont f(opt.font);
f.setPointSize(m_ptr->timestampFontPointSize(opt.font));
painter->save();
painter->setClipping(true);
painter->setClipRect(rect);
painter->setFont(opt.font);
// Draw background
painter->fillRect(rect, opt.state & QStyle::State_Selected ?
palette.highlight().color() :
palette.light().color());
// Draw bottom line
painter->setPen(lastIndex ? palette.dark().color()
: palette.mid().color());
painter->drawLine(lastIndex ? rect.left() : m_ptr->margins.left(),
bottomEdge, rect.right(), bottomEdge);
// Draw message icon
if (hasIcon)
painter->drawPixmap(contentRect.left(), contentRect.top(),
opt.icon.pixmap(m_ptr->iconSize));
// Draw timestamp
QRect timeStampRect(m_ptr->timestampBox(opt, index));
timeStampRect.moveTo(m_ptr->margins.left() + m_ptr->iconSize.width()
+ m_ptr->spacingHorizontal, contentRect.top());
painter->setFont(f);
painter->setPen(palette.text().color());
painter->drawText(timeStampRect, Qt::TextSingleLine,
index.data(Qt::UserRole).toString());
// Draw message text
QRect messageRect(m_ptr->messageBox(opt));
messageRect.moveTo(timeStampRect.left(), timeStampRect.bottom()
+ m_ptr->spacingVertical);
painter->setFont(opt.font);
painter->setPen(palette.windowText().color());
painter->drawText(messageRect, Qt::TextSingleLine, opt.text);
painter->restore();
}
The complete code of the example is available on GitHub.
Result
As written, the given example produces the following result:
I have some QIcon and QString pairs displayed in a QListview. The whole thing has been set up using the Qt Model/View Programming.
I am displaying labeled icons in this QListView. Items are displayed using the IconMode, Snap and TopToBottom flags. Thus, these are organised into a grid.
I would like to layout all the QListView items vertically and centered. In order to do this, I subclassed the QStyledItemDelegate object, and overloaded the paint method. However, I have three main problems:
Icon labels have been moved (in the QStyledItemDelegate subclasses) and a dotted square appears at its original place.
All the default styles are gone (hover, selection). I know how I can add some again, but I would like to use the default one (Windows style).
Everything is rendered into a grid, even if setGridSize is not called. I would like to use only one "column".
Here is a piece of code:
An extract of the constructor of my custom QListView:
setViewMode(QListView::IconMode);
setMovement(QListView::Snap);
setFlow(QListView::TopToBottom);
setSpacing(5);
setIconSize(QSize(iconSize, iconSize));
setGridSize(QSize(iconSize + 10, iconSize + 10));
setDragEnabled(true);
setAcceptDrops(true);
setDropIndicatorShown(true);
The paint method of the QStyledItemDelegate:
void FramesStyledItemDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
QStyleOptionViewItemV4 opt = option;
//initStyleOption(&opt, index);
opt.icon = QIcon();
opt.text = QString();
QApplication::style()->drawControl(QStyle::CE_ItemViewItem, &opt, painter);
const QRect r = option.rect;
QIcon icon = qvariant_cast<QIcon>(index.data(Qt::DecorationRole));
QString string = qvariant_cast<QString>(index.data(Qt::DisplayRole));
QPixmap pix = icon.pixmap(r.size());
const QPoint p = QPoint((r.width() - pix.width())/2, (r.height() - pix.height())/2);
painter->drawPixmap(r.topLeft() + p, pix);
painter->drawText(r.center() + p + QPoint(-(string.count() / 2), r.height() / 2), string);
}
If I do not use the initStyleOption shown above, I can remove the
dotted square, but I lose all the default styles.
If I uncomment the initStyleOption, The dotted square appears. I also lose all the default styles.
Here are some screenshots:
The cursor is on item 0 (No hover decoration, no selection decoration).
Item 0 has been selected. A small dotted square appears (initStyleOption has been uncommented).
I have switched to the ListMode. Selection decoration is working but not hover. Again, a small dotted square appears at the original place of the label.
Does someone have an idea? Thanks for your answers.
I'm making a dictionary program that displays word definitions in a 3-column QTableView subclass, as user types them, taking data from a QAbstractTableModel subclass. Something like that:
I want to add various formatting to the text, I'm using QAbstractItemView::setIndexWidget to add a QLabel to each cell as data comes in:
WordView.h
#include <QTableView>
class QLabel;
class WordView : public QTableView {
Q_OBJECT
public:
explicit WordView(QWidget *parent = 0);
void rowsInserted(const QModelIndex &parent, int start, int end);
private:
void insertLabels(int row);
void removeLabels(int row);
};
WordView.cpp
#include <QLabel>
#include "WordView.h"
WordView::WordView(QWidget *parent) :
QTableView(parent)
{}
void WordView::rowsInserted(const QModelIndex &parent, int start, int end) {
QTableView::rowsInserted(parent, start, end);
for (int row = start; row <= end; ++row) {
insertLabels(row);
}
}
void WordView::insertLabels(int row) {
for (int i = 0; i < 3; ++i) {
auto label = new QLabel(this);
label->setTextFormat(Qt::RichText);
label->setAutoFillBackground(true);
QModelIndex ix = model()->index(row, i);
label->setText(model()->data(ix, Qt::DisplayRole).toString()); // this has HTML
label->setWordWrap(true);
setIndexWidget(ix, label); // this calls QAbstractItemView::dataChanged
}
}
However, this is very slow - it takes around 1 second to refresh 100 rows (remove all, then add 100 new ones) like that. With original QTableView it worked fast, but I did not have formatting and ability to add links (cross-references in dictionary). How to make this much faster? Or what other widget can I use to display that data?
My requirements are:
Adding/removing around 1000 rows in ~0.2s, where around 30 will be visible at once
Clickable, multiple internal links (<a>?) in each cell (e.g. QLabel has that, QItemDelegate might have been fast, but I don't know how to get info which link I clicked there)
Formatting that allows different font sizes and colors, word wrap, different cell heights
I'm not really dead-set on QTableView, anything that looks like a scrollable table and looks consistent with Qt graphics is okay
Notes:
I tried making a single label with HTML <table> instead, but it wasn't much faster. Seems like QLabel isn't the way to go.
Data in the sample courtesy of the JMdict project.
I solved the problem by putting together few answers and looking at Qt's internals.
A solution which works very fast for static html content with links in QTableView is as folows:
Subclass QTableView and handle mouse events there;
Subclass QStyledItemDelegate and paint the html there (contrary to RazrFalcon's answer, it is very fast, as only a small amount of cells is visible at a time and only those have paint() method called);
In subclassed QStyledItemDelegate create a function that figures out which link was clicked by QAbstractTextDocumentLayout::anchorAt(). You cannot create QAbstractTextDocumentLayout yourself, but you can get it from QTextDocument::documentLayout() and, according to Qt source code, it's guaranteed to be non-null.
In subclassed QTableView modify QCursor pointer shape accordingly to whether it's hovering over a link
Below is a complete, working implementation of QTableView and QStyledItemDelegate subclasses that paint the HTML and send signals on link hover/activation. The delegate and model still have to be set outside, as follows:
wordTable->setModel(&myModel);
auto wordItemDelegate = new WordItemDelegate(this);
wordTable->setItemDelegate(wordItemDelegate); // or just choose specific columns/rows
WordView.h
class WordView : public QTableView {
Q_OBJECT
public:
explicit WordView(QWidget *parent = 0);
signals:
void linkActivated(QString link);
void linkHovered(QString link);
void linkUnhovered();
protected:
void mousePressEvent(QMouseEvent *event);
void mouseMoveEvent(QMouseEvent *event);
void mouseReleaseEvent(QMouseEvent *event);
private:
QString anchorAt(const QPoint &pos) const;
private:
QString _mousePressAnchor;
QString _lastHoveredAnchor;
};
WordView.cpp
#include <QApplication>
#include <QCursor>
#include <QMouseEvent>
#include "WordItemDelegate.h"
#include "WordView.h"
WordView::WordView(QWidget *parent) :
QTableView(parent)
{
// needed for the hover functionality
setMouseTracking(true);
}
void WordView::mousePressEvent(QMouseEvent *event) {
QTableView::mousePressEvent(event);
auto anchor = anchorAt(event->pos());
_mousePressAnchor = anchor;
}
void WordView::mouseMoveEvent(QMouseEvent *event) {
auto anchor = anchorAt(event->pos());
if (_mousePressAnchor != anchor) {
_mousePressAnchor.clear();
}
if (_lastHoveredAnchor != anchor) {
_lastHoveredAnchor = anchor;
if (!_lastHoveredAnchor.isEmpty()) {
QApplication::setOverrideCursor(QCursor(Qt::PointingHandCursor));
emit linkHovered(_lastHoveredAnchor);
} else {
QApplication::restoreOverrideCursor();
emit linkUnhovered();
}
}
}
void WordView::mouseReleaseEvent(QMouseEvent *event) {
if (!_mousePressAnchor.isEmpty()) {
auto anchor = anchorAt(event->pos());
if (anchor == _mousePressAnchor) {
emit linkActivated(_mousePressAnchor);
}
_mousePressAnchor.clear();
}
QTableView::mouseReleaseEvent(event);
}
QString WordView::anchorAt(const QPoint &pos) const {
auto index = indexAt(pos);
if (index.isValid()) {
auto delegate = itemDelegate(index);
auto wordDelegate = qobject_cast<WordItemDelegate *>(delegate);
if (wordDelegate != 0) {
auto itemRect = visualRect(index);
auto relativeClickPosition = pos - itemRect.topLeft();
auto html = model()->data(index, Qt::DisplayRole).toString();
return wordDelegate->anchorAt(html, relativeClickPosition);
}
}
return QString();
}
WordItemDelegate.h
#include <QStyledItemDelegate>
class WordItemDelegate : public QStyledItemDelegate {
Q_OBJECT
public:
explicit WordItemDelegate(QObject *parent = 0);
QString anchorAt(QString html, const QPoint &point) const;
protected:
void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;
QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const;
};
WordItemDelegate.cpp
#include <QPainter>
#include <QTextDocument>
#include <QAbstractTextDocumentLayout>
#include "WordItemDelegate.h"
WordItemDelegate::WordItemDelegate(QObject *parent) :
QStyledItemDelegate(parent)
{}
QString WordItemDelegate::anchorAt(QString html, const QPoint &point) const {
QTextDocument doc;
doc.setHtml(html);
auto textLayout = doc.documentLayout();
Q_ASSERT(textLayout != 0);
return textLayout->anchorAt(point);
}
void WordItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const {
auto options = option;
initStyleOption(&options, index);
painter->save();
QTextDocument doc;
doc.setHtml(options.text);
options.text = "";
options.widget->style()->drawControl(QStyle::CE_ItemViewItem, &option, painter);
painter->translate(options.rect.left(), options.rect.top());
QRect clip(0, 0, options.rect.width(), options.rect.height());
doc.drawContents(painter, clip);
painter->restore();
}
QSize WordItemDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const {
QStyleOptionViewItemV4 options = option;
initStyleOption(&options, index);
QTextDocument doc;
doc.setHtml(options.text);
doc.setTextWidth(options.rect.width());
return QSize(doc.idealWidth(), doc.size().height());
}
Note that this solution is fast only because a small subset of rows is rendered at once, and therefore not many QTextDocuments are rendered at once. Automatic adjusting all row heights or column widths at once will still be slow. If you need that functionality, you can make the delegate inform the view that it painted something and then making the view adjust the height/width if it hasn't before. Combine that with QAbstractItemView::rowsAboutToBeRemoved to remove cached information and you have a working solution. If you're picky about scrollbar size and position, you can compute average height based on a few sample elements in QAbstractItemView::rowsInserted and resize the rest accordingly without sizeHint.
References:
RazrFalcon's answer for pointing me to the right direction
Answer with code sample to render HTML in QTableView: How to make item view render rich (html) text in Qt
Answer with code sample on detecting links in QTreeView: Hyperlinks in QTreeView without QLabel
QLabel's and internal Qt's QWidgetTextControl's source code on how to handle mouse click/move/release for links
Many thanks for these code examples, it helped me implement similar functionalaity in my application. I'm working with Python 3 and QT5 and I would like to share my Python code, is case it may be helpful implementing this in Python.
Note that if you are using QT Designer for the UI design, you can use "promote" to change a regular "QTableView" widget to use your custom widget automatically when converting the XML to Python code with "pyuic5".
Code as follows:
from PyQt5 import QtCore, QtWidgets, QtGui
class CustomTableView(QtWidgets.QTableView):
link_activated = QtCore.pyqtSignal(str)
def __init__(self, parent=None):
self.parent = parent
super().__init__(parent)
self.setMouseTracking(True)
self._mousePressAnchor = ''
self._lastHoveredAnchor = ''
def mousePressEvent(self, event):
anchor = self.anchorAt(event.pos())
self._mousePressAnchor = anchor
def mouseMoveEvent(self, event):
anchor = self.anchorAt(event.pos())
if self._mousePressAnchor != anchor:
self._mousePressAnchor = ''
if self._lastHoveredAnchor != anchor:
self._lastHoveredAnchor = anchor
if self._lastHoveredAnchor:
QtWidgets.QApplication.setOverrideCursor(QtGui.QCursor(QtCore.Qt.PointingHandCursor))
else:
QtWidgets.QApplication.restoreOverrideCursor()
def mouseReleaseEvent(self, event):
if self._mousePressAnchor:
anchor = self.anchorAt(event.pos())
if anchor == self._mousePressAnchor:
self.link_activated.emit(anchor)
self._mousePressAnchor = ''
def anchorAt(self, pos):
index = self.indexAt(pos)
if index.isValid():
delegate = self.itemDelegate(index)
if delegate:
itemRect = self.visualRect(index)
relativeClickPosition = pos - itemRect.topLeft()
html = self.model().data(index, QtCore.Qt.DisplayRole)
return delegate.anchorAt(html, relativeClickPosition)
return ''
class CustomDelegate(QtWidgets.QStyledItemDelegate):
def anchorAt(self, html, point):
doc = QtGui.QTextDocument()
doc.setHtml(html)
textLayout = doc.documentLayout()
return textLayout.anchorAt(point)
def paint(self, painter, option, index):
options = QtWidgets.QStyleOptionViewItem(option)
self.initStyleOption(options, index)
if options.widget:
style = options.widget.style()
else:
style = QtWidgets.QApplication.style()
doc = QtGui.QTextDocument()
doc.setHtml(options.text)
options.text = ''
style.drawControl(QtWidgets.QStyle.CE_ItemViewItem, options, painter)
ctx = QtGui.QAbstractTextDocumentLayout.PaintContext()
textRect = style.subElementRect(QtWidgets.QStyle.SE_ItemViewItemText, options)
painter.save()
painter.translate(textRect.topLeft())
painter.setClipRect(textRect.translated(-textRect.topLeft()))
painter.translate(0, 0.5*(options.rect.height() - doc.size().height()))
doc.documentLayout().draw(painter, ctx)
painter.restore()
def sizeHint(self, option, index):
options = QtWidgets.QStyleOptionViewItem(option)
self.initStyleOption(options, index)
doc = QtGui.QTextDocument()
doc.setHtml(options.text)
doc.setTextWidth(options.rect.width())
return QtCore.QSize(doc.idealWidth(), doc.size().height())
In your case QLabel (re)painting is slow, not QTableView.
On other hand, QTableView does not support formated text at all.
Probably, your only way, is to create your own delegate, QStyledItemDelegate, and make your own painting and click processing in it.
PS: yes, you can use QTextDocument for rendering html inside delegate, but it will be slow too.
I use a slighted improved solution based on Xilexio code. There is 3 fundamental differences:
Vertical alignment so if you put the text in a cell higher than the text it will be center aligned and not top aligned.
The text will be right shifted if the cell contains an icon so the icon will not be displayed above the text.
The widget style to highlighted cells will be followed, so you select this cell, the colors will behave similar to other cells without the delegate.
Here is my code of the paint() function (the rest of the code remains the same).
QStyleOptionViewItemV4 options = option;
initStyleOption(&options, index);
painter->save();
QTextDocument doc;
doc.setHtml(options.text);
options.text = "";
options.widget->style()->drawControl(QStyle::CE_ItemViewItem, &options, painter);
QSize iconSize = options.icon.actualSize(options.rect.size);
// right shit the icon
painter->translate(options.rect.left() + iconSize.width(), options.rect.top());
QRect clip(0, 0, options.rect.width() + iconSize.width(), options.rect.height());
painter->setClipRect(clip);
QAbstractTextDocumentLayout::PaintContext ctx;
// Adjust color palette if the cell is selected
if (option.state & QStyle::State_Selected)
ctx.palette.setColor(QPalette::Text, option.palette.color(QPalette::Active, QPalette::HighlightedText));
ctx.clip = clip;
// Vertical Center alignment instead of the default top alignment
painter->translate(0, 0.5*(options.rect.height() - doc.size().height()));
doc.documentLayout()->draw(painter, ctx);
painter->restore();
I have a QDialog containing a QTableView, along with a custom delegate showing a QComboBox for enum types.
When the row is not selected, I still want the QComboBox to be visible (I would like to avoid using QTableView::openPersistentEditor()).
To do so, the custom delegate forwards the paint event to the following method:
QStyleOptionViewItem &option) const
{
painter->save();
QStyleOptionComboBox comboBoxOption;
comboBoxOption.rect = option.rect;
comboBoxOption.state = option.state;
comboBoxOption.state |= QStyle::State_Enabled;
comboBoxOption.editable = false;
comboBoxOption.currentText = enumInfo.valueToKey(curValue);
// The cast is successful, and srcWidget is the QTableView
QWidget *srcWidget = qobject_cast<QWidget *>(option.styleObject);
// style->metaObject()->className() = QStyleSheetStyle
QStyle *style = srcWidget ? srcWidget->style() : QApplication::style();
// However, the QSS is ignored here (while srcWidget->styleSheet() correctly
// returns the style I've set in Qt Designer)
style->drawComplexControl(QStyle::CC_ComboBox, &comboBoxOption, painter, srcWidget);
style->drawControl(QStyle::CE_ComboBoxLabel, &comboBoxOption, painter, srcWidget);
painter->restore();
}
The problem is that I’ve styled the combo box control using QSS, but drawComplexControl() seems to ignore that, despite using the QTableView’s style. Here’s a screenshot:
Is it possible for drawComplexControl() to consider the style sheet?
Thanks
I think that the only way is to grab widget with QPixmap::grabWidget(). And to use this image in delegate.
Seems, that it is not possible to do because of QSS limitation
I believe that you need to use dirty hacks with casting style() to private QStyleSheetStyle