I am working on a simple Silverlight application. The point of application is to display data loaded from XML file. Data consists of String "password" and Integer "passwordCount". Each loaded position is displayed as a coloured square and whenever user moves mouse over this square it is resized to "passwordCount/10" pixel width or height and the "password" string is displayed on it. Here is an example:
On Mouseover:
Everything works fine if I run it via VisualStudio Run button. The problem is that when I place the script on website, tiles resize in the wrong direction (they become smaller instead of bigger). The text is not displayed either. I don't have the faintest idea why. Silverlight on website opens in a separate window and it looks like that on mouseover:
(source: screenshu.com)
Here is the function I use to animate tiles:
public void rectangle_MouseEnter(object sender, MouseEventArgs e)
{
sbMouseON = new Storyboard();
DoubleAnimation sizeAnimation = new DoubleAnimation();
sizeAnimation.To = passwordCount/10; //passwordCount is always greater than 1000
sizeAnimation.Duration = new Duration(TimeSpan.FromMilliseconds(300));
Storyboard.SetTarget(sizeAnimation, (Rectangle)sender);
Storyboard.SetTargetProperty(sizeAnimation, new PropertyPath(direction));
sbMouseON.Children.Add(sizeAnimation);
Canvas.SetZIndex(rect, 2); //move rectangle up to make animation visible
DrawTextBlock();
sbMouseON.Begin();
}
Mods: Can't Add Comment so posting as answer
Here I am assuming that the "direction" you are passing in the TargetProperty is "(FrameworkElement.Width)" to increase the width of the rectangle.
If so only Logical Reason a Object can reduce in size is "sizeAnimation.To" property you are setting is setting the value which is smaller than the actual width of the object.
What is this DrawTextBlock() doing ? is there any code in there which can change the behavior of animation ?
The problem solved itself. I've just copied all files onto server and it works great. Looks like it was some Windows problem. Thank you for your interest #Abhinav.
Related
I just wanted to set the value of the scrollbar of my scrollview object to 0 every time a new text object is created. This way the newest object would always remain at the bottom without needing to scroll down (think of the chat of a video game for example). My problem is that for some reason the program is setting the value to 0 and then creating the text object, so it keeps the 2nd newest object at the bottom of the scrollview.
My code:
//Creates the Text objects
private GameObject GenerateTextObject(string content)
{
//Creates the Text objects
GameObject messagePrefab = Instantiate(MessagePrefab);
Text textComponent = messagePrefab.GetComponent<Text>();
//Sets the content of the text and parent
textComponent.text = content;
messagePrefab.transform.SetParent(ContentPanel.transform, false);
ScrollbarVertical.value = 0;
return messagePrefab;
}
In the code I am setting the value at the end of the function, but still sets the value of the scrollbar to 0 (properly moving the scrollview to the bottom) before the object is created.
https://gyazo.com/897982521f13d7792ec26540490a40c0
In the Gyazo picture you can see how it doesn't scroll all the way down.
I have tried using a coroutine and waitForEndFrame aswell as waitforseconds(1), but none seem to work.
Edit: when loading up Unity and sending new messages to the scrollview, I see the scrollbar go all the way down and then really quickly move up just a bit hiding the new text object.
What you can do is create a new Scroll View and follow these steps:
The result is from calling GenerateTextObject(Time.time.ToString()); every second.
private GameObject GenerateTextObject(string content)
{
//Creates the Text objects
GameObject messagePrefab = Instantiate(MessagePrefab);
Text textComponent = messagePrefab.GetComponent<Text>();
//Sets the content of the text and parent
textComponent.text = content;
messagePrefab.transform.SetParent(ContentPanel.transform, false);
//Force reset to the bottom on each message
//ScrollbarVertical.value = 0;
return messagePrefab;
}
I have not come up with a proper fix for this problem (I honestly do not know the cause of problem), but I have put together a little work-around for this situation.
To do this I simply created a small function:
public void Testing()
{
if (testing == true)
{
ScrollbarVertical.value = 0;
testing = false;
}
}
This would be attached to the built-in functionality of scrollbars "On Value Changed (Single)". In order to allow this to work, I just change the bool "testing" to true after creating a text object on GenerateTextObject(string content).
This fix is really ugly, and probably would cause more problems in the near future, but for now, it is a quick and dirty solution for this problem.
Sorry to necro this, but I had a similar problem and googling couldn't find a good answer. So I'm posting the solution that I found.
I tried to change the scrollbar value to 1 or 0, depending on the direction, so that everytime I open a UI panel, it'll start at the top. But no matter what I did, nothing seemed to work.
So my solution is to change the Y position of the content instead of the scrollbar value.
My scrollbar direction is set at bottom to top. Then I take the sizeDelta of the content, divide it by 2, (since I need the value of 1 for the scrollbar.value). I then multiplied it by -1 (if I dont, it'll start at the bottom). Then I set that value as the Y position of the content.
So far it works like a charm everytime I open my UI panel.
Hope this helps anyone looking for a solution.
I'm trying to implement a utility for showing throughput over time in a system, and am using Oxyplot to visualise the data.
Currently, zoom and pan are working as expected, but I would like some visual indication to the user which clearly shows whether the graph can be zoomed or panned.
After ditching the idea of using a scroll bar (being neither able to accurately get the position of the visible section of the graph, nor correctly position the thumb of the scroll bar releative to the chart), I have settled on using icons to show whether there is any data on the chart which is hidden to the left or rightmost side.
I would like these icons to work as buttons which allow the user to page left and right on the graph, however as with all things OxyPlot related, the implementation is far more complex than it first seems.
I'm using the WPF implementation, which uses a ViewModel representing the overall data set, with each series item represented by its own model.
This effectively renders almost every tutorial useless as the WPF implementation is significantly different to the basic OxyPlot package.
Currently, the code behind in the view handles the click on the page left/right buttons. I cannot put this in my ViewModel as it must interract directly with the PlotControl object.
private void btnPageRight_Click(object sender, RoutedEventArgs e) {
CategoryAxis axis = (CategoryAxis)PlotControl.ActualModel.Axes[0];
double xAxisMin = axis.ActualMinimum;
double xAxisMax = axis.ActualMaximum;
double visibleSpan = xAxisMax - xAxisMin;
double newMinOffset = xAxisMax + visibleSpan;
PlotControl.Axes[0].Minimum = newMinOffset;
PlotControl.Axes[0].Maximum = newMinOffset + visibleSpan;
PlotControl.ActualModel.InvalidatePlot(true);
}
As it stands, the above code throws no errors, but it does not work either.
If anybody can advise a possible way to make OxyPlot scroll to a given position using just code behind, I would be grateful.
As a last resort, I have pondered trying to simulate a mouse drag event to make this finicky beast behave.
I find the need to work around the problem in that way quite offensive, but desparation leads to odd solutions...
In case anybody else runs into this issue, the following snippet will scroll the graph in pages based on the number of columns visible on the graph at the time.
The snippet takes the number of visible columns as the viewport, and will move the visible area by the viewport size.
Although this applies to the WPF implementation, the only way I could find to make this work was to run this method from the code behind in the View containing the OxyPlot chart.
This should work correctly regardless of the zoom amount at the time.
The CategoryAxis reference must be obtained from the ActualModel as the WPF.Axis does not provide the ActualMinumum and ActualMaximum needed to calculate the viewable area.
The visibleSpan in this case represents the number of columns, with panStep denoting the amount to pan by in pixels.
private void ScrollInPages() {
//To zoom on the X axis.
CategoryAxis axis = (CategoryAxis)PlotControl.ActualModel.Axes[0];
double visibleSpan = axis.ActualMaximum - axis.ActualMinimum;
double panStep = 0;
//Scrolling the chart - comment out as appropriate
//Scroll right one page
panStep = axis.Transform(0 - (axis.Offset + visibleSpan));
//Scroll left one page
panStep = axis.Transform(axis.Offset + visibleSpan);
axis.Pan(panStep);
PlotControl.InvalidateFlag++;
}
I have a fragment for more options in my app that I want mostly hidden except for one small rectangle that says "Pull up for more options". This rectangle is parked at the bottom of the screen. When the user pulls it up, it then pops up from the bottom but NOT taking over the full screen, only about 1/3rd of the bottom. Just enough to show some of the options (checkboxes).
I am doing this and have it working by setting the TranslationY setting of the options fragment layout, which is in a FrameLayout container by the way, so that it is at the bottom of the screen and just shows my "Pull up for more options" text.
Then, when they pull up on that, I have some motion events to bring it up to where I want.
Here is the issue, I can get it working just fine on one display using hard coded TranslationY settings. For example, on a Galaxy S2 which has a density of 1.5 (HDPI 240) and a screen of 480x800, these are my hard coded values that work. I had to find them just by playing around with the numbers.
int trackOptionsHome = 650; //Parked at bottom of screen.
int trackOptionsExtended = 450; //Extended out where I want it to.
Again, with those hard coded values on the S2, it works fine and the way I want. However, if I now try a different device that is STILL HDPI (1.5/240) except the screen size is 480x640 (3.5in), it does not display properly which is to be expected. So then I implemented something like this:
float trackOptionsHome = ((dMetrics.HeightPixels / dMetrics.Density) + 120);
float trackOptionsExtended = ((dMetrics.HeightPixels / dMetrics.Density) - 100);
This was to try to take into account for different display density and sizes. I was then trying to do math at the end of each to position my fragment where I want it. However, I am getting inconsistent results and the numbers are still arbitrary. I have to find them by playing around.
This raises two questions:
1. How do I make sure I get the results I want on DIFFERENT display densities, which is not even the issue I am having at the moment since I have the same density.
2. How do I scale properly for the different size screens, which appears to be my immediate problem.
For math purposes at the moment (I can adjust as needed after I get an answer) let's say I want 50px of the fragment showing from the bottom when it is in the home position and 300px showing up from the bottom when extended.
What is the correct way to do this?
Thanks!
Mike
I've been working on a proper slider for my C# WPF project.
I wanted to create a slider, with a background that indicates different parts of the process, by adding a different color to each section on the slider. Furthermore I wanted to add small indicators (like the default ticks, but custom shape and irregular position) to the background.
I achived this by creating a drawing brush and adding correspondingly colored rectangles. This seemed to work fine, but a small distortion was still present, so I investigated further and realized the following:
With slider.ActualWidth I get the width of the whole widget. So in order to create a background covering the actual "slider" part, I'll have to be aware of the distance from the widget to the actual slider. (See image)
I measured the distance in a very small window, in fullscreen and stretched on two screens. It seems this distance is always 5 pixels. I tried google and looked through the info WPF provides on its pages, but either I read over it, or there is no information on this.
Can I be sure this distance is always 5 pixels ? In there any place such information is kept ? Is there maybe another way, to determine the size of the slider itself?
Assuming you haven't tinkered with the Slider template you can just walk down the visual tree and check the ActualWidth of the track:
Border b = VisualTreeHelper.GetChild(slider, 0) as Border;
Grid g = VisualTreeHelper.GetChild(b, 0) as Grid;
Border track = VisualTreeHelper.GetChild(g, 2) as Border;
Console.WriteLine("Track ActualWidth: " + track.ActualWidth);
I've got an app which will run on two different devices - one with a screen size of 240x320, the other 480x640.
For all forms bar one the VS generated code is fine:
this.AutoScaleDimensions = new System.Drawing.SizeF(96F, 96F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Dpi;
this.AutoScroll = true;
For one form i'm capturing a signature. I'm doing this by a panel with a graphics handler; capturing mouse down and move events; this generates a list of vector points which I can draw lines with.
On the smaller res screen this is fine. On the higher res, I can't display my lines.. and I think this is because the panel is beyond the windows form size.
The form is created with a size of 240 x 268; a standard size I think - i've not manually set it, VS does this for me.
In order to get the panel in the right spot on the high res device, the co-ordinates are 3, 290; ie, 290 is past 268. Also the width of the panel is 448 which is somewhat larger than 240.
I'm using .net 2.0 (can't use later). I think I need to resize the form to make it larger but I do want to keep the existing re-sizing for the other controls on the form.
I'm not sure how to do this.
Make the form dock to fill, then use the Anchor properties to ensure controls inside the form resize as expected.
If you want the option of customizing how an individual control resizes, then DONT set the anchor properties on it, and instead handle the Resize event and perform custom resizing/repositioning within code there.
eg
private void form_Resize(object sender, EventArgs e)
{
// Center the control without changing width. Other controls are anchored.
this.control.Left = (this.Width - this.control.Width) / 2;
}
I'm writing this answer for the benefit of those who may have a similar problem in the future. PaulG pointed me in the right direction but I found the root cause to be something else.
The PDA project i've got uses "FormFactor WindowsMobile 6 Classic" which has a default size of 240 x 268.
Changing this to "Windows Mobile 6 Professional VGA" created a much larger form size.
This allowed me to get things positioned correctly for the larger size; then AutoScaleMode to DPI; and manually resizing the panel smaller made it all work.
IE, going from larger to smaller was easy; I didn't get smaller to larger working.