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Added Text Alignment to the Button view.

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This commit is contained in:
BDisp
2020-06-06 17:40:03 +01:00
parent 03104495a5
commit db4fe3bc0f
3 changed files with 124 additions and 16 deletions
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94
Terminal.Gui/Views/Button.cs
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@@ -30,6 +30,7 @@ namespace Terminal.Gui {
Rune hot_key;
int hot_pos = -1;
bool is_default;
TextAlignment textAlignment = TextAlignment.Centered;
/// <summary>
/// Gets or sets whether the <see cref="Button"/> is the default action to activate in a dialog.
@@ -118,7 +119,6 @@ namespace Terminal.Gui {
this.IsDefault = is_default;
}
int SetWidthHeight (ustring text, bool is_default)
{
int w = text.Length + 4 + (is_default ? 2 : 0);
@@ -145,6 +145,15 @@ namespace Terminal.Gui {
}
}
///<inheritdoc/>
public TextAlignment TextAlignment {
get => textAlignment;
set {
textAlignment = value;
SetNeedsDisplay ();
}
}
internal void Update ()
{
if (IsDefault)
@@ -176,24 +185,84 @@ namespace Terminal.Gui {
SetNeedsDisplay ();
}
int c_hot_pos;
///<inheritdoc/>
public override void Redraw (Rect bounds)
{
Driver.SetAttribute (HasFocus ? ColorScheme.Focus : ColorScheme.Normal);
Move (0, 0);
Driver.AddStr (shown_text);
if (hot_pos != -1) {
Move (hot_pos, 0);
var caption = shown_text;
c_hot_pos = hot_pos;
int start;
if (Frame.Width > shown_text.Length + 1) {
switch (TextAlignment) {
case TextAlignment.Left:
caption += new string (' ', Frame.Width - caption.Length);
break;
case TextAlignment.Right:
start = Frame.Width - caption.Length;
caption = $"{new string (' ', Frame.Width - caption.Length)}{caption}";
if (c_hot_pos > -1) {
c_hot_pos += start;
}
break;
case TextAlignment.Centered:
start = Frame.Width / 2 - caption.Length / 2;
caption = $"{new string (' ', start)}{caption}{new string (' ', Frame.Width - caption.Length - start)}";
if (c_hot_pos > -1) {
c_hot_pos += start;
}
break;
case TextAlignment.Justified:
var words = caption.ToString ().Split (new string [] { " " }, StringSplitOptions.RemoveEmptyEntries);
var wLen = GetWordsLength (words);
var space = (Frame.Width - wLen) / (caption.Length - wLen);
caption = "";
for (int i = 0; i < words.Length; i++) {
if (i == words.Length - 1) {
caption += new string (' ', Frame.Width - caption.Length - 1);
caption += words [i];
} else {
caption += words [i];
}
if (i < words.Length - 1) {
caption += new string (' ', space);
}
}
if (c_hot_pos > -1) {
c_hot_pos += space - 1;
}
break;
}
}
Driver.AddStr (caption);
if (c_hot_pos != -1) {
Move (c_hot_pos, 0);
Driver.SetAttribute (HasFocus ? ColorScheme.HotFocus : ColorScheme.HotNormal);
Driver.AddRune (hot_key);
}
}
int GetWordsLength (string[] words)
{
int length = 0;
for (int i = 0; i < words.Length; i++) {
length += words [i].Length;
}
return length;
}
///<inheritdoc/>
public override void PositionCursor ()
{
Move (hot_pos == -1 ? 1 : hot_pos, 0);
Move (c_hot_pos == -1 ? 1 : c_hot_pos, 0);
}
bool CheckKey (KeyEvent key)
@@ -219,8 +288,7 @@ namespace Terminal.Gui {
public override bool ProcessColdKey (KeyEvent kb)
{
if (IsDefault && kb.KeyValue == '\n') {
if (Clicked != null)
Clicked ();
Clicked?.Invoke ();
return true;
}
return CheckKey (kb);
@@ -231,8 +299,7 @@ namespace Terminal.Gui {
{
var c = kb.KeyValue;
if (c == '\n' || c == ' ' || Rune.ToUpper ((uint)c) == hot_key) {
if (Clicked != null)
Clicked ();
Clicked?.Invoke ();
return true;
}
return base.ProcessKey (kb);
@@ -242,11 +309,12 @@ namespace Terminal.Gui {
public override bool MouseEvent (MouseEvent me)
{
if (me.Flags == MouseFlags.Button1Clicked) {
SuperView.SetFocus (this);
SetNeedsDisplay ();
if (!HasFocus) {
SuperView.SetFocus (this);
SetNeedsDisplay ();
}
if (Clicked != null)
Clicked ();
Clicked?.Invoke ();
return true;
}
return false;