RoundedRectangle(cornerRadius: 8, style: .continuous)
.foregroundColor(Color.init(red: 255, green: 245, blue: 158))
My rounded rectangle is all white. Why can't I initiate a custom color? Whereas Color.red works perfectly fine?
Color.init(red: CGFloat, green: CGFloat, blue: CGFloat)
takes a 3 CGFloats with values between 0 and 1
What you need is…
Color(red: 255/255, green: 245/255, blue: 158/255)
Note that the .init isn't required in Swift
You can write an extension to take Ints as parameters to Color initializer. It will allow you to use Color(red: 255, green: 245, blue: 158):
extension Color {
public init(red: Int, green: Int, blue: Int) {
self = Color(red: Double(red)/255.0,
green: Double(green)/255.0,
blue: Double(blue)/255.0)
}
}
Related
I would like to change color of my progress bar from default green to red. I have this code, but the view is "flat", I would like to achieve something like "3d effect" as on picture below:
Code for red PB:
QPalette pal = ui->pbExtractionWidget->palette();
pal.setColor(QPalette::Normal, QColor(Qt::red));
QString danger = "QProgressBar::chunk {background: QLinearGradient( x1: 0, y1: 0, x2: 1, y2: 0,stop: 0 #FF0350,stop: 0.4999 #FF0020,stop: 0.5 #FF0019,stop: 1 #FF0000 );border-bottom-right-radius: 5px;border-bottom-left-radius: 5px;border: .px solid black;}";
ui->pbExtractionWidget->setStyleSheet(danger);
This is how it looks:
This link provides a way to style the progressbar.
This link provides a way to change gradient color for widgets.
Essentially, you just need to change the stylesheet correctly. Each Chunk is a piece of the progressbar.
Or use QPalette which uses Base to color the background of a widget. Set its gradient correctly and then do the following.
palette.setBrush( QPalette::Base, gradientVariable);
ui->pbExtractionWidget->setPalette(palette);
// In main.cpp
qDebug() << QStyleFactory::keys();
// If keys contains e.g. 'Fusion' it would be possible to change color of QProgressBar.
// On windows default style is 'Windows' and color can only be change with style sheets.
auto style = QStyleFactory::create("Fusion");
if (style) {
app.setStyle(style);
}
class MyProgressBar final : public QProgressBar {
void paintEvent(QPaintEvent*) final {
QStyleOptionProgressBar option{};
initStyleOption(&option);
option.textAlignment = Qt::AlignHCenter;
option.palette.setColor(QPalette::Highlight, QColor("lightskyblue"));
option.palette.setColor(QPalette::HighlightedText, option.palette.color(QPalette::Text));
QPainter painter{this};
style()->drawControl(QStyle::CE_ProgressBar, &option, &painter, this);
}
};
You have to set the stylesheet correctly, use below stylesheet code
QString danger = "QProgressBar::chunk: horizontal {border-radius: 3px; background: QLinearGradient(X1:0, y1:0.966136, x2:0, y2:0, stop:0.609721 rgba(242, 53, 53, 255), stop:0.691923 rgba(240, 151, 141, 252));border: .px solid black;}";
ui->progressBar->setStyleSheet(danger);
I am trying to make wireframe transparent in one of examples of Qt3D, but fails.
I set alpha to 0.5 in robustwireframe.frag, but it does not work.
void main(){
// Calculate the color from the phong model
vec4 color = vec4( adsModel( fs_in.position, normalize( fs_in.normal ) ), 0.5);
fragColor = shadeLine( color );
How to make wireframe transparent in Qt3D?
Adding a BlendEquation to the the renderStates will enable the Alpha blending so add the following code to the RenderPass in the WireframeEffect.qml:
RenderPass {
renderStates: [
BlendEquation {blendFunction: BlendEquation.Min}
]
shaderProgram: ShaderProgram {
vertexShaderCode:loadSource("qrc:/shaders/robustwireframe.vert")
geometryShaderCode: loadSource("qrc:/shaders/robustwireframe.geom")
fragmentShaderCode: loadSource("qrc:/shaders/robustwireframe.frag")
}
}
System: Linux Mint, QT Creator from Repo -> QT Version 5.2, C++)
I've created a Customwidget wich Im using inside a QTreeView
OwnItem *OI = new OwnItem;
QTreeWidgetItem *itemN = new QTreeWidgetItem();
ui->ProjektListe->addTopLevelItem(itemN);
ui->ProjektListe->setItemWidget(itemN, 0, OI);
What I want is to set up a Stylesheet for the QTreeWidget including a Backgroundcolor and a Textcolor in Normal Mode and Selected Mode.
So far:
QTreeWidget::item{
background-color: rgb(255, 255, 255);
color: rgb(255, 255, 0);
}
QTreeWidget::item:selected{
background-color: #157efb;
color: rgb(255, 0, 0);
}
The Problem is that The Backgroundcolor works, the Color (TextColor) not (in both Cases). Im aware that when stylesheets for childs are set separately this won't work but the widget itself and all of its children (Some Labels and Buttons) are "Sylesheet" free.
The only Case "color: .... " for TextColor works is this case
QWidget{
color: rgb(85, 0, 0);
}
But this wont work with the "selected" status
My anser is in C++ not for the CSS but you can create a QPalette then set the values that you want to with the function void QPalette::setColor ( ColorGroup group, ColorRole role, const QColor & color ) so for you it should me something like:
QTreeWidget tree(a);
QPalette palette;
palette.setColor(QPalette::Window, QColor(255, 255, 255));
palette.setColor(QPalette::WindowText, QColor(255, 255, 0));
palette.setColor(QPalette::Highlight, QColor(255, 0, 0))
palette.setColor(QPalette::HighlightedText, QColor(0, 0, 255));
QList<QTreeWidgetItem> treeItems = tree.findChildren<QTreeWidgetItem*>();
foreach (QTreeWidgetItem *w : treeItems) {
w.setPalette(palette);
}
the findChildren will return a list with all the children to the widget then you can set the palette. To find the list of the colors groups you can go here: http://qt-project.org/doc/qt-4.8/qpalette.html#setColor then click on the ColorGroup type in the parameter then you will be are here: http://qt-project.org/doc/qt-4.8/qpalette.html#ColorGroup-enum
Good luck !
I have a JavaFX 2 application, where all my buttons use the default style (grey gradient). In some special areas of the application, the background color is red, yellow or green. In these areas, I also have buttons.
Instead of re-styling all the different states (normal, hover, pressed) of the button in all three colors, I'd like to just give the button the tint of the background. Is this possible, and how?
If not, is there a way to easily re-style the base button style, and have the hover and pressed states (pseudo-selectors) automatically derived from this style?
If that's not possible, I'm open for suggestions.. My most important goal is to avoid redundant/duplicate declarations (especially of gradients), in case someone wants to add a different color panel later, or just change the shade of one of the background colors.
CSS for the red panel/button:
#my-red-panel {
-fx-border-width: 1;
-fx-border-radius: 5;
-fx-background-radius: 5;
-fx-smooth: true;
-fx-border-color: rgb(209, 65, 42);
-fx-background-color: rgba(255, 78, 50, 0.89);
}
#my-red-panel .button {
-fx-background: rgba(0, 0, 0, 0); /* Now borders look good, but button is still grey*/
}
My best bet so far, is to use a semi-transparent gradient, like so:
#my-red-panel .button {
-fx-background-color: linear-gradient(rgba(255, 255, 255, 0.3), rgba(0, 0, 0, 0.2));
}
I still have to declare each state, but at least I can change the underlying colors without having to modify each state. The main problem is that this overrides the entire look of the button, so I was hoping for something better... :-/
Not tested, but try experimenting with:
#my-red-panel {
-fx-base: rgba(255, 78, 50, 0.89);
}
or perhaps:
#my-red-panel .button {
-fx-base: ... ;
}
depending on the exact effects you want.
The trick here is that the default css (caspian.css for JavaFX2.2 or modena.css for JavaFX8) use some pre-defined lookup colors. You can dig out the source for these to see how they are used. If you redefine these lookups for a node in the scene graph, the new definition is propagated to all child nodes.
How can I set the background color for a part of the background like in the following image:
Of course, without border frames, I want to set only the cyan color.
I need to set the length of the left part (cyan) as the percentage of the widget length, e.g 30%.
With css I would hack qlineargradient a little bit. Note that edge of cyan may be a little blurry.
QFrame
{
background-color: qlineargradient(x1:0, x2: 1, stop: 0 cyan, stop: 0.29 cyan, stop: 0.2901 white, stop: 1 white);
}
If you want it hard-coded in the application, you can overload the paintEvent function in a widget. Something like this:
void MyWidget::paintEvent(QPaintEvent *event)
{
QPainter painter(this);
QPen pen(Qt::NoPen);
painter.setPen(pen);
painter.fillRect(0, 0, width(), height(), Qt::white);
painter.fillRect(0, 0, 0.3*width(), height(), Qt::cyan);
...
}