When input comes in on a tab that is not active, the text for the tab changes to a purple color. What CSS selectors do I need to use to change this?
I am using a custom stylesheet in Konsole to change how the tabs look, but can't figure out how to change this one value. This page makes no mention of it.
I'm using Konsole 2.13.2(KDE 4.13.3) on Xubuntu 14.04(XFCE).
As of today, this tab-activity color appears to be set by
void TabbedViewContainer::setTabActivity(int index , bool activity)
{
const QPalette& palette = _tabBar->palette();
KColorScheme colorScheme(palette.currentColorGroup());
const QColor colorSchemeActive = colorScheme.foreground(KColorScheme::ActiveText).color();
const QColor normalColor = palette.text().color();
const QColor activityColor = KColorUtils::mix(normalColor, colorSchemeActive);
QColor color = activity ? activityColor : QColor();
if (color != _tabBar->tabTextColor(index))
_tabBar->setTabTextColor(index, color);
}
in konsole's src/ViewContainer.cpp and is therefore probably beyond the reach of a custom stylesheet configured in Konsole.
Note how KColorScheme::ActiveText is mixed with normalColor. You can have some influence over the color by changing the "Active Text" color in KDE System Settings -> Color -> Colors tab -> Active Text. Konsole has to restarted for the changes to take effect.
Related
I am currently trying to implement a
CLKComplicationTemplateGraphicCircularClosedGaugeImage
but for some reason my icon keeps getting tinted blue.
When I change the tintColor of the WatchFace everything seems to be tinted the right way. But when I disable tinting on the WatchFace my Image will be colored blue for some reason.
I enabled the rendering Mode: alwaystemplate inside the asset catalog because my image is just black in the original version and I tint it in other parts of my app.
let gaugeProvider = CLKSimpleGaugeProvider(style: .fill, gaugeColor: color, fillFraction: progress)
let template = CLKComplicationTemplateGraphicCircularClosedGaugeImage(gaugeProvider: gaugeProvider, imageProvider: CLKFullColorImageProvider(fullColorImage: image))
I tried to apply a tintColor on the template and I also tried to apply a tintColor direclty to the image before passing it to the ImageProvider. Both Ideas doesnt result in the expected output.
let gaugeProvider = CLKSimpleGaugeProvider(style: .fill, gaugeColor: color, fillFraction: progress)
let imageProvider = CLKFullColorImageProvider(fullColorImage: image)
let template = CLKComplicationTemplateGraphicCircularClosedGaugeImage(gaugeProvider: gaugeProvider, imageProvider: imageProvider)
template.tintColor = .white // this has no effect
How can I set a default tint color when using alwaysTemplate as the rendering mode?
I found a Solution by myself.
I am now tinting the Image white and also rerendering it as a originalImage.
let imageProvider = CLKFullColorImageProvider(fullColorImage: image.withTintColor(.white, renderingMode: .alwaysTemplate).withRenderingMode(.alwaysOriginal))
In my QListWidget, there are some items that have non-default background color, I set them like so inside the custom QListWidget class:
item->setBackgroundColor(qcolor); // item is of type QListWidgetItem*
Those non-default colors that I set are distorted by the QListWidget's selection color. See an example:
Items three and four are supposed to be the same color, but they are not since the item four is selected, and thus the result color is a summation of original color and QListWidget's selection (active item?) color.
My question is how to edit or remove that selection color?
I tried inside my QListWidget (in special slot when I want to change the item's background color):
QPalette pal = this->palette();
pal.setColor(QPalette::Highlight, QColor(255,255,255,0));
this->setPalette(pal); // updated
But it did not produce any effect. what am I doing wrong? Is it a correct variable to set? Do I set it up inside QListWidget or inside its delegate?
Update: I tried using stylesheets as pointed by comment/answer, however, it will not be possible to use them for my application, because the items in my rows have 3 states (so I would need to use three colors). E.g., 3 states that correspond to three colors: pink for active, green for inactive and gray for the rest. When using stylesheets, I cannot set the custom property (let's say QListWidget::item[Inactive="true"]) to a single QListWidgetItem, but for the full QListWidget, and therefore it colors all the rows the same color.
Stylesheets were tried for similar problem here, and didn't work, therefore I make conclusion using stylesheets is not the way to go.
The background change method that I used originally works fine for my purpose, but I cannot figure out how to get rid of the default selection color (transparent light blue) which adds to the background color and produces the mixed color.
I think you'd be better served using the style sheets to do this. Here's an example
QListWidget::item
{
background: rgb(255,255,255);
}
QListWidget::item:selected
{
background: rgb(128,128,255);
}
::item indicates the individual items within the QListWidget, while :selected indicates the QListWidgetItems which are currently selected.
To then get the custom background on specific widgets, you could use custom style sheet properties. In your code, call something like this on the widget you want to apply a custom style on:
myList->setProperty( "Custom", "true" );
// Updates the style.
style->unpolish( myList );
style->polish( myList );
Then in your style sheet, define the style for your custom property like so.
QListWidget::item[Custom="true"]
{
background: rgb(128,255,128);
}
I found a suitable solution by using a delegate. So, there is no need to use QPalette; and for my problem the stylesheets will not work. This solution will also work when different rows (QListWidget or QTreeWidget) are needed to be colored in different colors, depending on some state.
The background color is set as described on the question:
item->setBackgroundColor(qcolor); // change color slot inside QListWidget class
In order to define rules how the widget is painted, I re-define the delegate:
class Delegate : public QStyledItemDelegate {};
Then I re-define Delegate's method paint(). There I define how to draw each row of my widget. More specifically, I only call custom drawing when the mouse hovering over an item, or that item is in selected state (those are the conditions when the row is selected by the light blue color which I want to avoid). The code looks like this:
void Delegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
if((option.state & QStyle::State_Selected) || (option.state & QStyle::State_MouseOver))
{
// get the color to paint with
QVariant var = index.model()->data(index, Qt::BackgroundRole);
// draw the row and its content
painter->fillRect(option.rect, var.value<QColor>());
painter->drawText(option.rect, index.model()->data(index, Qt::DisplayRole).toString());
}
else
QStyledItemDelegate::paint(painter, option, index);
// ...
}
Of course, do not forget to associate the QListWidget with Delegate:
listWidget->setItemDelegate(new Delegate());
I have wrote an app using QTreeWidget. Currently when selecting an item using the mouse, this item is highlighted in blue as probably default palette.
How can I change the property to modify the highlight color when a QTreeWidgetItem is selected using the mouse. For example, the color is no more blue but the one I want.
My TreeWidget is defined as below:
setSortingEnabled(true);
setColumnWidth(0, 400);
setExpandsOnDoubleClick(true);
setAlternatingRowColors(true);
QPalette p = palette();
p.setColor( QPalette::AlternateBase, QColor(0xef, 0xef, 0xef) );
setPalette(p);
setSelectionBehavior(QAbstractItemView::SelectRows);
setSelectionMode(QAbstractItemView::ExtendedSelection);
I have also subclass the QTreeWidgetItem but it's mostly to add parameter and change the font by default
MyTreeWidgetItem::MyTreeWidgetItem()
{
isFolder = false;
filename = NULL;
QFont ItemFont = QFont(FONT_TYPE);
ItemFont.setPointSize(FONT_SIZE_MEDIUM);
setFont(0,ItemFont);
}
Any idea ?
Thanks
I'm wondering how to get the text color of a specific QLabel. I'm setting text color earlier in my code an need to read it out again later to determine which action to take...
I think you can use:
QLabel::palette()
To get the palette of this widget. Once you have the palette I guess you could retrieve the color via:
ColorRole r = QPalette::Text;
const QBrush & QPalette::brush(r);
Once you have the QBrush you can simply use:
const QColor & QBrush::color() const
I'm using a QTableWidget to display several rows. Some of these rows should reflect an error and their text color is changed :
Rows reflecting that there is no error are displayed with a default color (black text on white background on my computer).
Rows reflecting that there is an error are displayed with a red text color (which is red text on white background on my computer).
This is all fine as long as there is no selection. As soon as a row is selected, no matter of the unselected text color, the text color becomes always white (on my computer) over a blue background.
This is something I would like to change to get the following :
When a row is selected, if the row is reflecting there is no error, I would like it to be displayed with white text on blue background (default behavior).
If the row is reflecting an error and is selected, I would like it to be displayed with red text on blue background.
So far I have only been able to change the selection color for the whole QTableWidget, which is not what I want !
Answering myself, here is what I ended up doing : a delegate.
This delegate will check the foreground color role of the item. If this foreground color is not the default WindowText color of the palette, that means a specific color is set and this specific color is used for the highlighted text color.
I'm not sure if this is very robust, but at least it is working fine on Windows.
class MyItemDelegate: public QItemDelegate
{
public:
MyItemDelegate(QObject* pParent = 0) : QItemDelegate(pParent)
{
}
void paint(QPainter* pPainter, const QStyleOptionViewItem& rOption, const QModelIndex& rIndex) const
{
QStyleOptionViewItem ViewOption(rOption);
QColor ItemForegroundColor = rIndex.data(Qt::ForegroundRole).value<QColor>();
if (ItemForegroundColor.isValid())
{
if (ItemForegroundColor != rOption.palette.color(QPalette::WindowText))
{
ViewOption.palette.setColor(QPalette::HighlightedText, ItemForegroundColor);
}
}
QItemDelegate::paint(pPainter, ViewOption, rIndex);
}
};
Here is how to use it :
QTableWidget* pTable = new QTableWidget(...);
pTable->setItemDelegate(new MyItemDelegate(this));
What you'll want to do is connect the selectionChanged() signal emitted by the QTableWidget's QItemSelectionModel to a slot, say OnTableSelectionChanged(). In your slot, you could then use QStyleSheets to set the selection colours as follows:
if (noError)
{
pTable->setStyleSheet("QTableView {selection-background-color: #000000; selection-color: #FFFFFF;}");
}
else
{
pTable->setStyleSheet("QTableView {selection-background-color: #FF0000; selection-color: #0000FF;}");
}
It looks ok, but you might want to look at the documentation of QStyleOption it can tell you wether the item drawn is selected or not, you don't have to look at the draw color to do that. I would probably give the model class a user role that returns whether the data is valid or not and then make the color decision based on that. I.e. rIndex.data(ValidRole) would return wether the data at this index is valid or not.
I don't know if you tried overriding data for the BackgroundRole and returning a custom color, Qt might do the right thing if you change the color there
You could, of course, inherit from the table widget and override the paint event, but I don't think that is what you want to do.
Instead, should use the QAbstractItemDelegate functionality. You could either create one to always be used for error rows, and set the error rows to use that delegate, or make a general one that knows how to draw both types of rows. The second method is what I would recommend. Then, your delegate draws the rows appropriately, even for the selected row.
You could use e.g. a proxy model for this where you return a different color if you have an error for the specific modelindex;
QVariant MySortFilterProxyModel::data(const QModelIndex & index, int role = Qt::DisplayRole) {
// assuming error state and modelindex row match
if (role==Qt::BackgroundRole)
return Qt::red;
}