I would like to compute the width for each TableViewerColumn so that it fits the content best. Is there any "best practice" way of doing this?
I think you're after ...
TableViewerColumn col = ...;
col.getColumn().pack();
Related
Following the example on the website: https://vega.github.io/editor/#/examples/vega-lite/interactive_bar_select_highlight
I want to programmatically set the selections via signals. I realize that I could emulate a click by doing the following
VEGA_DEBUG.view.signal("select_tuple", {"unit":"","fields":[{"type":"E","field":"_vgsid_"}],"values":[1]})
However, I cannot proceed to select another, e.g., the shift select of the 2
VEGA_DEBUG.view.signal("select_tuple", {"unit":"","fields":[{"type":"E","field":"_vgsid_"}],"values":[2]})
This makes sense, since only shift-click accumulates the state.
I tried modifying the accumulated signal
VEGA_DEBUG.view.signal("select", {"_vgsid_":[1,2],"vlMulti":{"or":[{"_vgsid_":1},{"_vgsid_":2}]}})
However, this does not help. Is this not possible? I understand that a custom solution may be possible in hand-rolled vega, as opposed to that compiled from vega-lite.
Thanks.
Just need to set VEGA_DEBUG.view.signal("select_toggle", true) before adding the new select!!
After much research I made this example of how to change the vega-lite brush programmatically
https://observablehq.com/#john-guerra/update-vega-lite-brush-programmatically
Using #koaning example this stack overflow question I figured that you can change the brush by updating "brush_y" (assuming that your selection is called brush) or change the selection using "brush_tuple" (which doesn't seem to update the brush mark)
viewof chart = {
const brush = vl.selectInterval("brush").encodings("y");
const base = vl
.markBar()
.select(brush)
.encode(
vl.x().count(),
vl.y().fieldQ("Horsepower"),
vl.color().if(brush, vl.value("steelblue")).value("gray")
)
.height(maxY);
return base.data(data).render();
}
update = {
// From https://codepen.io/keckelt/pen/bGNQPYq?editors=1111
// brush_y -> brush_tuple -> brush
// Updates on pixels
chart.signal("brush_y", [by0, maxY / 2]);
await chart.runAsync();
}
Crossposting here in case it might be useful for anyone
What is the best way to change the color of NSProgressIndicator, is there an easier way than just to subclass it and then draw the whole component by myself?
Basically what I want to do is to have a similar component but with the ability to change the color of the bar.
I tried to google this but all the questions were quite outdated and didn't really concern the 10.10 OS X version that I am working on. Also checked cocoa controls and did only find 1 component that was for outdated OS X version.
You can use Quartz filters (e.g. hue adjust) for this directly in Interface Builder. This works better than expected.
It's in the Effects Inspector. Under "Content Filters" you can add "Hue Adjust"
Use "CIFalseColor" filter to get white color and more.
let colorFilter = CIFilter(name: "CIFalseColor")!
colorFilter.setDefaults()
colorFilter.setValue(color1, forKey: "inputColor0")
colorFilter.setValue(color2, forKey: "inputColor1")
proggressBar?.contentFilters = [colorFilter]
To change color of NSProgressIndicator use setControlTint: method. If you want to set custom color you have to draw such control manually. However, you should use the system color to keep this kind of control consistent across the system.
For Swift the method name is controlTint.
progressIndicator = NSProgressIndicator(frame: .......
progressIndicator.controlTint = .blueControlTint
you can use proggressBar.appearance = NSAppearance(named: .vibrantLight) // this is light or vibrantDark for "black" indictor
Based on Paxos' answer on the Interface builder, this is how I was able to do it programmatically:
let progress = NSProgressIndicator()
progress.contentFilters = [CIFilter(name: "CIHueAdjust", parameters: ["inputAngle": 4])!]
This would turn the bar green. I got this from looking at the Main.storyboard diff:
<progressIndicator maxValue="100" doubleValue="50" style="bar" translatesAutoresizingMaskIntoConstraints="NO" id="NIr-vo-obX">
<rect key="frame" x="3" y="22" width="210" height="20"/>
+ <contentFilters>
+ <ciFilter name="CIHueAdjust">
+ <configuration>
+ <real key="inputAngle" value="4"/>
+ <null key="inputImage"/>
+ </configuration>
+ </ciFilter>
+ </contentFilters>
</progressIndicator>
I was trying to change de Hue as seen in most answers, but I was getting a lot of issues to get the right specific color I wanted.
What did worked for me, and seems to be the most direct way to get a specific color, was using the CIColorMonochrome filter, where You can set any RGB color you want:
let myCustomColor: CIColor(red: 10, green: 10, blue: 10)
if let colorMonochrome = CIFilter(name: "CIColorMonochrome", parameters: [kCIInputColorKey: myCustomColor]) {
progressIndicator.contentFilters.append(colorMonochrome)
}
Based on the answer from KamyFC I found out that CIColor was required for the filter named "CIFalseColor".
Here is the Objective-C solution to make the progress bar whatever NSColor, in this example orange.
Don't forget to add #import Quartz; to your file.
// Create color:
CIColor *color = [[CIColor alloc] initWithColor:[NSColor orangeColor]];
// Create filter:
CIFilter *colorFilter = [CIFilter filterWithName:#"CIFalseColor"
withInputParameters:#{#"inputColor0" : color,
#"inputColor1" : color}];
// Assign to bar:
_progressBar.contentFilters = #[colorFilter];
What is the best way to display some value (that changes as the game runs) on the screen in iPhone SpriteKit? The only way I can think of is SKLabelNode, but it's probably not meant to be used like this and also I can't find any way to measure its width, which makes me unable to position it correctly (I want it to be in the bottom right corner). Thanks in advance :).
#Edit
My attempt at doing this:
SKLabelNode *someLabel = [SKLabelNode labelNodeWithFontNamed:#"Chalkduster"];
someLabel.text = some_string;
someLabel.fontSize = 30;
someLabel.fontColor = [SKColor blackColor];
someLabel.position = CGPointMake(some_int, 15);
[self addChild:someLabel];
The values of some_string and some_int change as the game runs, so someLabel is removed, someLabel.text and someLabel.position are re-assigned, and the label is added again. Yes, I am aware that this is a bad way to do this...
Unfortunately, SKLabelNode is your simplest bet, it's just not the most robust tool.
You just want to update its text and its position when you need to. Your code is correct, and if you want to get its actual size, then you would get the width of its frame.
update text:
someLabel.text = theNewText;
update position:
someLabel.position = theNewPosition;
get relative width
float widthOfLabelFrame = someLabel.frame.size.width;
additional alignment settings that might help (vertical baseline is the default):
someLabel.horizontalAlignmentMode = SKLabelHorizontalAlignmentModeRight;
someLabel.verticalAlignmentMode = SKLabelVerticalAlignmentModeBaseline;
Ok, I haven't found it anywhere. What should I do if i want to draw with core graphics per pixel? Like… I want to draw a line to pixels (45,61) and than (46,63) instead of drawing to point (23,31) or something like that. So what should I do in this case?
Should I use something like:
CGContextAddLineToPoint(context,22.5,30.5);
CGContextAddLineToPoint(context,23,31.5);
Or there is some better way?
I know about contentScaleFactor but should I use it as (when plotting some function for example):
for(int x=bounds.origin.x; x<=bounds.origin.x+bounds.size.width*[self contentScaleFactor]; i++)
CGContextAddLineToPoint(context,x/[self contentScaleFactor],y(x/[self contentScaleFactor]));
I know that the example code is not superb, but I think you'll get the idea.
I'll be vey thankful for help because I'm a bit confused with all this scale factor stuff.
Sounds like you are doing the Assignment3 from the iOS uTunes Stanford Course? :)
I think you are on the right track, as my implementation looks very similar:
for(int x=self.bounds.origin.x; x<=self.bounds.origin.x + (self.bounds.size.width * self.contentScaleFactor); x++) {
// get the scaled X Value to ask dataSource
CGFloat axeX = (x/self.contentScaleFactor - self.origin.x) / self.scale;
// using axeX here for testing, which draws a x=y graph
// replace axeX with the dataSource Y-Point calculation
CGFloat axeY = -1 * ((axeX * self.scale) + self.origin.y);
if (x == self.bounds.origin.x) {
CGContextMoveToPoint(context, x/self.contentScaleFactor, axeY);
} else {
CGContextAddLineToPoint(context, x/self.contentScaleFactor, axeY);
}
}
Tested on iOS-Sim iPhone4 (contentScaleFactor 1.0) + iPhone4S Device (contentScaleFactor 2.0).
Would be happy about possible improvements from other readers, because I am still learning.
the form backcolor is 14221235 , but when i set the customcolor in colordialog to equal the form backcolor, it sets it to 5046311 !!! what is the problem?
this is how i am getting the background color:
get_background = Str(Abs(Form1.BackColor.ToArgb))
the reason i am turning it into a string is because i will feed it into a string which has "32498239, 234234234, 23423234, 32234432432, 423324234"
then i take this string and put it in customcolors like this. btw this piece of code works fine:
Dim numberStrings = My.Settings.mytext1.Split(","c).Select(Function(x) x.Trim())
ColorDialog1.CustomColors = numberStrings.Select(Function(x) CInt(x)).ToArray()
a user below mentioned that toargb takes into account the opacity. this is an excellent point indeed, and i want to clarify that i DO NOT need the opacity. how would i do toargb without taking into opacity?
this is what you want
Microsoft.VisualBasic.RGB(Me.BackColor.R, Me.BackColor.G, Me.BackColor.B).ToString
The 32-bit result from .ToArgb() contains not just the three visible color components (red, green and blue) but also the alpha component, which is essentially opacity. This is a pure guess on my part, but I think the ColorDialog is just used for picking RGB values, so when you set the color to the form's BackColor, the dialog just ignores the alpha component (or sets it to zero), which is why you end up getting a different number from the .ToArgb() method.
Note: this is just speculation on my part. It would help if you posted a code sample that demonstrates the specific problem.
I don't really understand the question. You want to set the custom color dialog CustomColor property to (the form's backcolor) r + g + b components? Not sure why you would do that, you can always just get the form's backcolor, set the Alpha value to 255 and then set the result to the CustomColor property:
Color c = Color.FromArgb( 255, form1.BackColor );
myColorDlg.CustomColor = c;
Or just use form1.BackColor.ToArgb() & 0xFFFFFF (if you want the integer value).
If you are asking for ARGB (A = Alpha) then you are asking for the opacity information. Instead you could use the R, G, B Properties of Color Independently.
You could use Color.FromArgb(255, me.BackColor).ToArgb() in order to get the ARGB value of the same color with 100% opacity.
To highlight how to pass the same colour (Using Fredou's answer) from a colorDialog to set a pie chart segment colour, one which is a .Net embedded chart and the other an Excel chart:
embchartPie.Series(0).Points(Index).Color = ColorDialog1.Color
With ColorDialog1.Color
xl_Pie_Chart.SeriesCollection(1).points(Index + 1).format.fill.forecolor.rgb = RGB(.R, .G, .B).ToString
End With