I have HeaderUsesThemes to false. When I 'edit columns' I can set the forecolor property of each header just fine but there is no property for the back color.
How can I set the back color of the Headers?
with ObjectListView, you can change the back color of Headers using the HeaderFormatStyle class.
Here is a short example (change all headers to the same style using DarkBlue as Backcolor and Gray for text):
using System;
//...
using BrightIdeasSoftware;
//...
private void adjustMyObjectListViewHeader()
{
foreach (OLVColumn item in olv.Columns)
{
var headerstyle = new HeaderFormatStyle();
headerstyle.SetBackColor(Color.DarkBlue);
headerstyle.SetForeColor(Color.SlateGray);
item.HeaderFormatStyle = headerstyle;
}
}
olv is the ObjectListView Object
Details can be found in the ObjectListView Cookbook:
http://objectlistview.sourceforge.net/cs/recipes.html#how-do-i-change-the-font-or-color-of-the-column-headers
Hope this helps...
Related
Below is my code I used to create a custom UITextField in code behind.
UITextField usernameField;
usernameField = new UITextField
{
Placeholder = "Enter your username",
BorderStyle = UITextBorderStyle.RoundedRect,
Frame = new RectangleF(10, 32, 50, 30)
};
View.AddSubview(usernameField);
But when I run my app, I dont see this anywhere. Not only this control but all the controls that I create in code behind.
If I drag the controls from toolbox onto my View it's working very fine.
What might be the cause?
Make sure that Container View is not transparent so Alpha = 1 and set background colors for appropriate controlls. Because by default its set to ClearYou can use this method to easly set background and rounded corners like in older versions of iOS
public static void MakeViewRounded(UIView view,float cornerRadius, MonoTouch.CoreGraphics.CGColor backgroundColor)
{
view.Layer.CornerRadius = cornerRadius;
view.Layer.BackgroundColor = backgroundColor;
}
Also make sure that you adding your custom controll to ViewController/View
I am trying to finish up a custom cell for my tables using monotouch.dialog, and have nearly everything sorted out, except for my cell's detail text label colour.
I am overriding GetCell to customise my EntryElement cell like this:
public class CustomStyledEntryElementPlain : MonoTouch.Dialog.EntryElement
{
public CustomStyledEntryElementPlain (string _caption, string _value) : base(string.Empty,string.Empty,string.Empty,false)
{
KeyboardType = UIKeyboardType.Default;
Value = _value;
ReturnKeyType = UIReturnKeyType.Done;
Caption = _caption;
}
public override UITableViewCell GetCell(UITableView tableView) {
var cell = base.GetCell(tableView);
cell.BackgroundColor = Resources.XDarkGrayColor;
cell.TextLabel.TextColor = Resources.XWhiteColor;
cell.BackgroundView = new UIView (RectangleF.Empty);
cell.DetailTextLabel.TextColor = UIColor.White; //this line causes the error
return cell;
}
}
I then create the elements like so:
new CustomSection ("Testing"){
new CustomStyledEntryElementPlain("Test","Test1"),
new CustomStyledEntryElementPlain("Test","Test2")
},
However, on displaying the table, I get the error: "System.NullReferenceException has been thrown Object reference not set to an instance of an object"
I could have sworn when I initially prototyped this that I had the DetailTextLabel text color working! Commenting out the change of course results in my table and cell displaying just fine, albeit with black text (which I want to change to white!)
Has anyone got any idea as to why I am getting this?
The DetailTextLabel property in the UITableViewCell is only available if the Cell has a UITableViewCellStyle that supports it. From the UITableViewCell documentation for the DetailTextLabel property:
UITableViewCell automatically creates the secondary (detail) label if the cell is created with a MonoTouch.UIKit.UITableViewCellStyle that supports a detail label.
If the cell's style doesn't support a detail label, this property returns null.
Check the documentation for UITableViewCellStyle to find out which styles support this property.
The MonoTouch.Dialog RootElement does not appear to have a way of adding a subtitle. I would like to display a subtitle below the caption.
Do I have to subclass the element and add a custom view to in the GetCell method?
Is there a simpler option?
The simplest way to achieve this is to subclass RootElement and override GetCell method, create a new cell and set the LabelText and DetailLabelText. This will give you a nice subtitle
public override MonoTouch.UIKit.UITableViewCell GetCell(MonoTouch.UIKit.UITableView tv) {
var baseCell = base.GetCell(tv);
var cell = new UITableViewCell(UITableViewCellStyle.Subtitle, "cellId");
cell.TextLabel.Text = Caption;
cell.DetailTextLabel.Text = _subtitle;
cell.Accessory = baseCell.Accessory;
return cell;
}
Note the cell Style. Unfortunately, it looks like the cell style is available only during cell construction and not afterward. So you cant just call base.GetCell(tv) and set it's style. That would have been a better option.
_subTitle is a class level variable set via the custom constructor
private string _subtitle = string.Empty;
public ChartSectionRootElement(string caption, string subTitle) : base(caption) {
this._subtitle = subTitle;
}
The ComboBox text color is white even though I've set it to black in my theme. The text color of TextField is black as supposed to. How come the ComboBox text color isn't black?
The theme:
fgColor=FFFFFF
bgColor=000000
sel#fgColor=FFFFFF
sel#bgColor=EE8207
ComboBox.fgColor=000000
ComboBox.bgColor=FFFFFF
ComboBox.sel#fgColor=000000
ComboBox.sel#bgColor=FFFFFF
TextField.fgColor=000000
TextField.bgColor=FFFFFF
TextField.sel#fgColor=000000
TextField.sel#bgColor=FFFFFF
You can change the text color like this
Style selStyle = UIManager.getInstance().getComponentSelectedStyle("ComboBoxItem");
selStyle.setFgColor(0x00AF00); // Selected Item will be in green color
UIManager.getInstance().setComponentSelectedStyle("ComboBoxItem", selStyle);
Style unSelStyle = UIManager.getInstance().getComponentStyle("ComboBoxItem");
unSelStyle.setFgColor(0x000000); // Selected Item will be in black color
UIManager.getInstance().setComponentStyle("ComboBoxItem", unSelStyle);
This will work out!!
You should use hexColors: "0x000000" or "0xffffff"
You can also set the color in your app using following methods.
lwuit uses int's to set a color, to calculate the int use the following function.
public static int colorStringToInt(String hexColor) {
int color;
try {
color = Integer.parseInt(hexColor.substring(2), 16);
return color;
} catch (Exception ex) {
ex.printStackTrace();
return -1;//no negative colors
}
}
set the color like this.
int color = AppUtils.colorStringToInt("0xffffff");//white
if (color != -1) {
b.getStyle().setFgColor(color, true);
}
you can use like this,
ComboBoxItem.fgColor=000000
ComboBoxItem.sel#fgColor=ffffff
Are you using ResourceEdit. If u r not using means use the ResourceEdit and create the theme.
Is there a way i can hide the border of the selected cell(or make the border color as white)in a qtablewidget.. By default a border with dotted line is shown.. Can u help me...
I prefer to do:
ui->tableWidget->setFocusPolicy(Qt::NoFocus);
You can also change the focus policy using the design tab.
It looks like this dotted border around selected cell you're trying to hide is a focus rectangle. Any given cell can have focus and not be selected at the same time and vice-versa. If you want this border to not get painted use an item delegate. There you can remove State_HasFocus style from the item's state before painting it. Pls, see an example below on how to do this, it's c++, let me know if you have troubles converting it to python
// custom item delegate class
class NoFocusDelegate : public QStyledItemDelegate
{
protected:
void paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const;
};
void NoFocusDelegate::paint(QPainter* painter, const QStyleOptionViewItem & option, const QModelIndex &index) const
{
QStyleOptionViewItem itemOption(option);
if (itemOption.state & QStyle::State_HasFocus)
itemOption.state = itemOption.state ^ QStyle::State_HasFocus;
QStyledItemDelegate::paint(painter, itemOption, index);
}
...
// set the item delegate to your table widget
ui->tableView->setItemDelegate(new NoFocusDelegate());
hope this helps, regards
Qt::NoFocus will remove the selected state of rows in QTableWidget.
The Python3/PySide2 version to the accepted answer:
class NoFocusDelegate(QtWidgets.QStyledItemDelegate):
def paint(self, painter: PySide2.QtGui.QPainter, option: PySide2.QtWidgets.QStyleOptionViewItem, index: PySide2.QtCore.QModelIndex) -> None:
itemOption = QtWidgets.QStyleOptionViewItem(option)
if option.state & QtWidgets.QStyle.State_HasFocus:
itemOption.state = itemOption.state ^ QtWidgets.QStyle.State_HasFocus
super().paint(painter, itemOption, index)
table.setItemDelegate(NoFocusDelegate())
Worked perfectly for me.