FastColoredTextbox is an user-control that can be downloaded in this url, it looks like this:
Its an amazing control but only can select one word when doubleclicking on the text, can't hold the mouse to select more words, so it only selects the entire current word over the mouse pointer even if you try to move the mouse cursor to left or right to select more text.
I have not found any information explaining the problem, and all of the official example projects has this problem.
Nobody means how to make an AutoWordSelection equivalent of a default TextBox for a FastcoloredTextbox control, but even the most important thing is:
How to select just more than one word with the mouse?
UPDATE:
#mostruash answer is very instructive but in all this time I could not carry out the modifications by myself.
I need a huge help from a C# programmer to carry out this task, my knowledge of C# is very low and the modifications that I made to the source did not work (don't compiled), I went back to the original user-control source to not end up spoiling more. I hate to say this but this time I need the job done, this source is too much for me.
If I'm requesting for too much then maybe with the necesary extended instructions of a C# developer, explaining how to accomplish this step by step, maybe I could carry it out by myself.
UPDATE
A video that demostrates the problem:
https://www.youtube.com/watch?v=Cs2Sh2tMvII
UPDATE
Another demo, I show what the FastColoredTextBox can't do but I would like to do like every other text-editor can do:
I've checked the source code of the project. Dragging is cancelled if a double click occurs and SelectWord is called.
You could modify the source code to include the feature that you request. (https://github.com/PavelTorgashov/FastColoredTextBox). In that case:
You must trace selections that start with double clicks.
Instead of calling SelectWord function, use the Selection class and draggedRange attribute to mark the selected word in OnMouseMove.
You also must handle deselection of words in OnMouseMove.
You must also select spaces between words in OnMouseMove.
The double click is handled in the code piece below:
if (!isLineSelect)
{
var p = PointToPlace(e.Location);
if (e.Clicks == 2)
{
mouseIsDrag = false; //Here, drag is cancelled.
mouseIsDragDrop = false;
draggedRange = null; //Drag range is nullified
SelectWord(p); //SelectWord is called to mark the word
return;
}
if (Selection.IsEmpty || !Selection.Contains(p) || this[p.iLine].Count <= p.iChar || ReadOnly)
OnMouseClickText(e);
else
{
mouseIsDragDrop = true;
mouseIsDrag = false;
}
}
EDIT:
This may require a lot of work to accomplish. So maybe you should use another tool/library. I have not studied the whole source code so there will probably be additional steps to those provided above.
For example, to trace double clicks you can do the following:
Define a class variable/property in FastColoredTextbox.cs: bool isDoubleClick.
Set it to true in OnMouseDown under if(e.Clicks == 2) condition. Set it to false in all other conditions.
Set it to false in OnMouseClick or OnMouseUp or in other relevant mouse event handlers.
That way you will know if series of mouse events had started with a double click event or not. Then you would act accordingly in OnMouseMove because that is where you (un)mark characters or (un)mark words.
LAST WORDS OF CAUTION:
The author of that project did not include any inline comments or any other means of documentation so you will be studying the code line by line to understand what each function/part does.
Add the following statement between Line 5276 and line 5277 in the class FastColoredTextBox.cs:
SelectWord(p);
mouseIsDrag = true; // here
return;
Note that implementing the ultimate behavior would require a good bunch of coding. Whereas the workaround mentioned above might satisfy your needs.
As #mostruash points out in his answer, that is the place where author cancels the mouse drag. Not sure why he deliberately prevents this feature. Only he knows.
if (e.Clicks == 2)//Line 5270
{
mouseIsDrag = false;
mouseIsDragDrop = false;
draggedRange = null;
SelectWord(p);
return;
}
I didn't read whole code, and I have no reason to do it. I just checked quickly and removed them. And it works as you expect.
if (e.Clicks == 2)//Line 5270
{
//Comment or remove completely.
//mouseIsDrag = false;
//mouseIsDragDrop = false;
//draggedRange = null;
SelectWord(p);
return;
}
Note: Am not sure this breaks something else, I've not tested. At least that works. Test it yourself.
My solution is a bit tweaky, but seems to work at first glance.
You have to make some changes in the Code:
Add mouseIsWholeWordSelection flag and a Range variable which can store the initial selected range after double click (best after line 100, I guess):
private bool mouseIsWholeWordSelection;
private Range mouseIsWholeWordSelectionBaseRange;
Change the selection code for double click event as stated above and extend it a bit (line 5222):
if (e.Clicks == 2)
{
//mouseIsDrag = false;
mouseIsDragDrop = false;
mouseIsWholeWordSelection = true;
//draggedRange = null;
SelectWord(p);
mouseIsWholeWordSelectionBaseRange = Selection.Clone();
return;
}
Add evaluation of dragging event for recreating selection (line 5566):
else if (place != Selection.Start)
{
if (mouseIsWholeWordSelection)
{
Selection.BeginUpdate();
var oldSelection = Selection.Clone();
SelectWord(place);
if (Selection.End >= mouseIsWholeWordSelectionBaseRange.End)
{
Selection.Start = (mouseIsWholeWordSelectionBaseRange.Start > Selection.Start) ? mouseIsWholeWordSelectionBaseRange.Start : Selection.Start;
Selection.End = mouseIsWholeWordSelectionBaseRange.End;
}
else if (Selection.Start < mouseIsWholeWordSelectionBaseRange.End)
{
Selection.Start = new Place(Selection.End.iChar, Selection.End.iLine);
Selection.End = mouseIsWholeWordSelectionBaseRange.Start;
}
Selection.EndUpdate();
DoCaretVisible();
Invalidate();
}
else
{
Place oldEnd = Selection.End;
Selection.BeginUpdate();
if (Selection.ColumnSelectionMode)
{
Selection.Start = place;
Selection.ColumnSelectionMode = true;
}
else
Selection.Start = place;
Selection.End = oldEnd;
Selection.EndUpdate();
DoCaretVisible();
Invalidate();
}
return;
}
Add at every place where isMouseDrag is being set to false:
isMouseWholeWordSelection = false;
And there you go.
Related
I am making this sum creator where user will have to type an answer using custom keyboard. and on check button click if answer is correct then new question is loaded.
My problem is after answering first question answer button reset to blank but when user types next answer, only one last alphabet is deleted (for example 5 from 15). and when i type 14 it shows 114 (1 from previously typed answer).
I need help to reset answer button text to blank.
I am using buttons because later i want to add more questions at the same time so user will have multiple answers to click and type.
Can anyone please help me on this? Also tell me if this is the right method to achieve what i want.
I am calling backspace function to delete previous answer and also setting text to blank.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class Keyboard : MonoBehaviour
{
string word = null;
int wordIndex = -1;
string alpha = null;
string alpha2 = null;
public Text userAnswer1 = null;
public Text valueA, valueB;
public Text scoreCount;
private int a, b, answer1, score;
char[] nameChar = new char[5];
private void Start()
{
SumCreator();
}
public void nameFunc (string alphabet)
{
wordIndex++;
char[] keepchar = alphabet.ToCharArray();
nameChar[wordIndex] = keepchar[0];
alpha = nameChar[wordIndex].ToString();
word = word + alpha;
userAnswer1.text = word;
}
public void BackspaceFunction()
{
if (wordIndex >= 0)
{
wordIndex--;
alpha2 = null;
for (int i = 0; i < wordIndex + 1; i++)
{
alpha2 = alpha2 + nameChar[i].ToString();
}
word = alpha2;
userAnswer1.text = word;
}
}
public void SumCreator ()
{
a = Random.Range(0,15);
b = Random.Range(0,15);
answer1 = a + b;
valueA.text = a.ToString();
valueB.text = b.ToString();
scoreCount.text = "score " + score.ToString();
}
public void CheckAnswer()
{
Text buttonText = userAnswer1.GetComponentInChildren<Text>();
if (answer1 == int.Parse(userAnswer1.text))
{
score++;
// userAnswer1.text = string.Empty;
buttonText.text = string.Empty;
}
SumCreator();
}
}
I've edited my answer and removed the now irrelevant parts.
Once the button "Check" is clicked, first of all erase the text in the result textbox, then do the whole other logic.
To erase the text you can use next piece of code:
Text buttonText = buttonName.GetComponentInChildren<Text>();
buttonText.text = string.Empty;
You probably want to have this "buttonText" property as a global and get it once, at the start of the program instead of getting it every time the button is clicked. It won't do much difference in a small scale program, but it's a right way of thinking.
After checking your code a bit more, I can summarize your problem:
The whole logic of your program is flawed, there're many unnecessary complicated things which make it fail in several places. It is understandable, everybody goes through this stage, nothing to be ashamed or worried about. Either way it's my subjective opinion, which may be wrong.
Back to your code, all you have to do is update your result text, say "txtResult", once anything happens.
Once you click a number, do "txtResult += numberClicked".
Once you click backspace, remove last char of txtResult. Here is a question with many answers on how to do it, it's really simple.
Once you click "Check", in case it's the right number, set txtResult to empty.
Also, every time you update txtResult, you're supposed to update the UI too of course. Let's say you do it every time, it would be one line to update txtResult, and one line to update UI for each of the above 3 cases. So in total 6 lines. A check for an empty string while in "Backspace" function adds another line. My math could be wrong, but either way, it's quite short and simple approach, nothing too complicated.
You just lack relevant knowledge, otherwise you wouldn't be doing that nightmare in your Backspace function.
Regarding the "nameFunc" function, the whole 6 lines could be replaced with "txtResult += alphabet", isn't it? I'm not sure what you get in alphabet parameter, but either way, string is an array of chars, so you can also do "txtResult += alphabet[0]" instead of what you have there.
So, in total, you got it all right, the logic was right, you figured the main aspects. But you over complicated the whole thing. I believe you'll be fine after reading all this text, and wish you the best.
If you want to clear your Text object when you have succesfully entered your answer, you should not call your "BackSpace" function.
Just replace your code to this:
if (answer1 == int.Parse(userAnswer1.text))
{
score++;
userAnswer1.text = string.Empty;
This will clear the text element.
You could also look into using InputFields in Unity, which are designed for entering input and automatically support backspace and other keyboard functions.
If you do, make sure that you set the InputField's ContentType to either Integer Number or Decimal Number
I have a TextBox where a user is meant to enter a product code that looks like this:
XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
What I'm trying to do is automatically placing the dashes in the right place as the user is typing, so that they only have to enter the actual code itself (similar to what's done in various pieces of software).
The problems I'm encountering have got to do with the position of the cursor as the user is typing.
My current solution (partially working) is as the following:
private void textBoxProductKey_KeyPress(object sender, KeyPressEventArgs e)
{
if (char.IsControl(e.KeyChar))
{
return;
}
if (!char.IsLetterOrDigit(e.KeyChar) || textBoxProductKey.Text.Length == 29)
{
e.Handled = true;
return;
}
var cursorPosition = textBoxProductKey.SelectionStart;
string text;
if (cursorPosition == 0)
{
text = e.KeyChar + textBoxProductKey.Text;
}
else if (cursorPosition == textBoxProductKey.Text.Length)
{
text = textBoxProductKey.Text + e.KeyChar;
}
else
{
text = textBoxProductKey.Text.Insert(cursorPosition, e.KeyChar.ToString());
}
text = Regex.Replace(text, "-", "");
text = Regex.Replace(text, ".{5}", "$0-");
textBoxProductKey.Text = text.Length <= 29 ? text : text.Substring(0, 29);
textBoxProductKey.SelectionStart = cursorPosition / 6 == (cursorPosition + 1) / 6
? cursorPosition + 1
: cursorPosition + 2;
e.Handled = true;
}
The two problems with my current solution are
It doesn't properly handle the delete/backspace keys where potentially the dashes need to be deleted/inserted in different locations and the cursor position re-calculated
It doesn't work properly if the cursorPosition == textBoxProductKey.Text.Length.
The latter is very easy to fix, but I'm struggling with the former and also feel like the code is a bit convoluted.
How can I more easily achieve this (note the plan is to continue using a TextBox object).
EDIT
I am aware of the MaskedTextBox control, I do not want to use a MaskedTextBox, I want to use a TextBox.
What I am trying to do is not outside the realms of possibility for a TextBox, even if there are "easier" ways to accomplish this with other controls.
Also I feel like this is a great question for teaching people how to work with the cursor in a TextBox (among other things probably).
Have you considered using the MaskedTextBox control? It might be more appropriate.
The MaskedTextBox is designed precisely for this type of requirement and would answer your original question.
You may find it more difficult to implement this functionality yourself with a normal TextBox. It's also worth weighing up which solution is more likely to be be bug-free and easier to maintain.
It may helpful if you could to explain to us why you would prefer use a TextBox over a MaskedTextBox.
Continuing our conversation, save your current caret position, parse the whole text as if it's new, and return the caret to its original position.
That way you handle deleting as well as copy-pasting
I'm trying to create a simple listbox with ObjectListView (WinForm, C#). The goal is to have a single value (a double) and a check box.
I want to be able to edit the double value by Single Click, so here are the relevant lines of code from my MyWindow.Designer.cs file (i've left out the default values for efficiency):
this.olvDepths = new BrightIdeasSoftware.ObjectListView();
this.olvColumn1 = ((BrightIdeasSoftware.OLVColumn)(new BrightIdeasSoftware.OLVColumn()));
...
this.olvDepths.CellEditActivation = BrightIdeasSoftware.ObjectListView.CellEditActivateMode.SingleClick;
this.olvDepths.CheckBoxes = true;
this.olvDepths.CheckedAspectName = "IsDefault";
this.olvDepths.FullRowSelect = true;
//
// olvColumn1
//
this.olvColumn1.AspectName = "Depth";
this.olvColumn1.Text = "";
this.olvColumn1.IsEditable = true;
I then create a list of my class (ShieldingEntry) and use the olvDepths.SetObjects() with the list. My ShieldingEntry class looks like this:
public class ShieldingEntry
{
public double Depth { get; set; }
public bool IsDefault { get; set; }
}
However, when I click the field, it doesn't go into edit mode. I've also tried the DoubleClick, SingleClickAlways, and F2Only modes and they don't work either.
The Checkbox works fine.
************** I have additional information *********************
I've pulled and build the ObjectListView source, so I could step through it.
I put a breakpoint in the OLV StartCellEdit method and it gets called and appears to setup and select the control appropriately. It just never appears...
As I noted in the comments on the answer below, I've got this control on a tabbed dialog, and if I switch to another tab, then back, the control works fine.
What am I missing?
I've used ObjectListView before, and here is what I had to do:
Handle the CellEditStarting event. This event is raised when the cell goes into edit mode. Since OLV doesn't really have built-in editors, you have to make your own. Then handle the CellEditFinishing event to validate the data before putting it back into your model.
So first, handling the CellEditStarting event:
private void objlv_CellEditStarting(object sender, CellEditEventArgs e)
{
//e.Column.AspectName gives the model column name of the editing column
if (e.Column.AspectName == "DoubleValue")
{
NumericUpDown nud = new NumericUpDown();
nud.MinValue = 0.0;
nud.MaxValue = 1000.0;
nud.Value = (double)e.Value;
e.Control = nud;
}
}
This creates your editing control. If you want to make sure the size is right, you can set the size of the control (in this case a NumericUpDown) to the cell bounds using e.CellBounds from the event object.
This will show the editor when you click in the cell. Then you can handle the editor finished event to validate the data:
private void objlv_CellEditFinishing(object sender, CellEditEventArgs e)
{
if (e.Column.AspectName == "DoubleValue")
{
//Here you can verify data, if the data is wrong, call
if ((double)e.NewValue > 10000.0)
e.Cancel = true;
}
}
I don't think handling it is required, but its good practice to validate data from the user.
The editing control in the CellEditStarting event can be any control, even a user defined one. I've used a lot of user defined controls (like textboxes with browse buttons) in the cell editor.
[Edit]
I uploaded an example here dropbox link that seems to work. Might not be in the exact view as needed, but seems to do the job.
For anyone else with this problem. I had it specifically when trying to edit a 'null' value in a decimal? on the OLV on a tab page. Solution for me was to set UseCustomSelectionColors to 'False'. I didn't look elsewhere to see if it was reported as a bug. Seems like a bug.
I have a problem in my winform c# project.
In my project I have two main functions, one makes buttons at run time and the other function allows me to move the button on the form at run time. Now what can I do if I have button on other button so I made function that replace the button places as it was at the beginning but the function make problems if someone can help me it will be great!
public void upandunder(Button cBtn1, Button cBtn2)
{
if ((cBtn1.Location.X == cBtn2.Location.X) && (cBtn1.Location.Y == cBtn2.Location.Y))
{
int placex = cBtn1.Location.X;
int placey = cBtn1.Location.Y;
cBtn1.Location.X = cBtn2.Location.Y;
cBtn1.Location.Y = cBtn2.Location.Y;
cBtn2.Location.X = placex;
cBtn2.Location.Y = placey;
}
}
its makes me that errorError 1 Cannot modify the return value of 'System.Windows.Forms.Control.Location' because it is not a variable
Correct, the return value of the Location property is not editable. According to the documentation:
Because the Point class is a value type (Structure in Visual Basic, struct in Visual C#), it is returned by value, meaning accessing the property returns a copy of the upper-left point of the control. So, adjusting the X or Y properties of the Point returned from this property will not affect the Left, Right, Top, or Bottom property values of the control. To adjust these properties set each property value individually, or set the Location property with a new Point.
Therefore, you need to rewrite your code to the following:
(Also, I strongly recommend naming the parameters something other than x and y, since you're dealing with coordinates that have x and y values within the function...)
public void upandunder(Button btn1, Button btn2)
{
if ((btn1.Location.X == btn2.Location.X) && (btn1.Location.Y == btn2.Location.Y))
{
Point originalLocation = btn1.Location;
btn1.Location = btn2.Location;
btn2.Location = originalLocation;
}
}
or even better, just compare the two Point values as returned by the Location property (the Point structure overloads the == operator):
public void upandunder(Button btn1, Button btn2)
{
if (btn1.Location == btn2.Location)
{
Point originalLocation = btn1.Location;
btn1.Location = btn2.Location;
btn2.Location = originalLocation;
}
}
Of course, I fail to see how that accomplishes anything. First you check to see that the buttons are positioned on top of each other (have exactly the same x- and y-coordinates), and then if they do, you swap their positions. They're already in the same positions—you tested that before you executed the swapping code.
Judging by the name of your function (upandunder, which should be UpAndUnder following standard .NET naming conventions), it seems as if you wish to change the Z order of the buttons. If that's the case, then you should call either the BringToFront or SendToBack methods of the button control.
The Location Property on a Control returns a Point. The Point structure has the X and Y values you're working with. Instead of accessing them directly, I think you want to provide new Location points.
Give this a try (It works on my Machine)
public void UpAndUnder(Button cBtn1, Button cBtn2)
{
if (cBtn1.Location == cBtn2.Location.Y)
{
Point oldPoint = new Point(cBtn1.Location.X, cBtn1.Location.Y);
cBtn1.Location = new Point(cBtn2.Location.X, cBtn2.Location.Y);
cBtn2.Location = oldPoint;
}
}
If you want to place one button over other, just call
button1.BringToFront();
this will change Z-order of button1 and place it over all other controls.
I'm looking for the source code to collapse every methods of my active document using the VS2010 Addin.
For the moment I parse the text content of the document trying to match if the line is a method signature. If it is the case, I collapse the method.
TextSelection selection = (TextSelection)_applicationObject.ActiveDocument.Selection;
var editPoint = selection.ActivePoint.CreateEditPoint();
editPoint.MoveToLineAndOffset(1, 1);
while (!editPoint.AtEndOfDocument)
{
editPoint.StartOfLine();
var line = editPoint.GetText(editPoint.LineLength).TrimStart();
if (line.StartsWith("public"))
{
selection.MoveToLineAndOffset(editPoint.Line, 1);
_applicationObject.ExecuteCommand("Edit.ToggleOutliningExpansion");
}
// go to the next line
}
Does anyone could tell me if I'm on the good way or if there is an easiest way ?
Maybe I asked not so well my question. My real goal was to collapse all the code : properties, methods, comments with ///, using; but not the regions.
Here is one solution :
// reduce everything like Ctrl+M+O
_applicationObject.ExecuteCommand("Edit.CollapsetoDefinitions");
// save the cursor position
TextSelection selection = (TextSelection)_applicationObject.ActiveDocument.Selection;
var selectedLine = selection.ActivePoint.Line;
var selectedColumn = selection.ActivePoint.DisplayColumn;
// open the regions
selection.StartOfDocument();
while (selection.FindText("#region", (int)vsFindOptions.vsFindOptionsMatchInHiddenText))
{
// do nothing since FindText automatically expands any found #region
}
// put back the cursor at its original position
selection.MoveToDisplayColumn(selectedLine, selectedColumn);
I hope this could help