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finished better text editing my dudes
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parent
b812bbe677
commit
e39394bce3
7 changed files with 64 additions and 13 deletions
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@ -11,5 +11,9 @@ namespace MLEM.Extended.Extensions {
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return SpriteFontExtensions.SplitString(s => font.MeasureString(s).Width, text, width, scale);
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}
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public static string TruncateString(this BitmapFont font, string text, float width, float scale, bool fromBack = false) {
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return SpriteFontExtensions.TruncateString(s => font.MeasureString(s).Width, text, width, scale, fromBack);
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}
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}
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}
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@ -56,5 +56,9 @@ namespace MLEM.Extended.Font {
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return this.Font.SplitString(text, width, scale);
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}
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public string TruncateString(string text, float width, float scale, bool fromBack = false) {
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return this.Font.TruncateString(text, width, scale, fromBack);
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}
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}
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}
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@ -29,8 +29,8 @@ namespace MLEM.Ui.Elements {
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public float TextOffsetX = 4;
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private IGenericFont font;
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private double caretBlinkTimer;
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private int textStartIndex;
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private int textDisplayLength;
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private string displayedText;
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private int textOffset;
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public Rule InputRule;
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public string MobileTitle;
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public string MobileDescription;
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@ -57,8 +57,10 @@ namespace MLEM.Ui.Elements {
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if (!this.IsSelected)
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return;
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if (key == Keys.Back) {
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this.CaretPos--;
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this.RemoveText(this.CaretPos, 1);
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if (this.CaretPos > 0) {
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this.CaretPos--;
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this.RemoveText(this.CaretPos, 1);
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}
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} else if (key == Keys.Delete) {
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this.RemoveText(this.CaretPos, 1);
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} else {
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@ -81,19 +83,27 @@ namespace MLEM.Ui.Elements {
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private void HandleTextChange(bool textChanged = true) {
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// not initialized yet
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if (this.font == null) {
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this.textDisplayLength = this.text.Length;
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if (this.font == null)
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return;
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}
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var length = this.font.MeasureString(this.text).X * this.TextScale;
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var maxWidth = this.DisplayArea.Width / this.Scale - this.TextOffsetX * 2;
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if (length > maxWidth) {
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// TODO
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this.textStartIndex = 0;
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this.textDisplayLength = this.text.Length;
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// if we're moving the caret to the left
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if (this.textOffset > this.CaretPos) {
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this.textOffset = this.CaretPos;
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} else {
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// if we're moving the caret to the right
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var importantArea = this.text.ToString(this.textOffset, Math.Min(this.CaretPos, this.text.Length) - this.textOffset);
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var bound = this.CaretPos - this.font.TruncateString(importantArea, maxWidth, this.TextScale, true).Length;
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if (this.textOffset < bound) {
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this.textOffset = bound;
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}
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}
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var visible = this.text.ToString(this.textOffset, this.text.Length - this.textOffset);
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this.displayedText = this.font.TruncateString(visible, maxWidth, this.TextScale);
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} else {
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this.textStartIndex = 0;
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this.textDisplayLength = this.text.Length;
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this.displayedText = this.Text;
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this.textOffset = 0;
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}
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if (textChanged)
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@ -103,6 +113,10 @@ namespace MLEM.Ui.Elements {
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public override void Update(GameTime time) {
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base.Update(time);
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// handle first initialization if not done
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if (this.displayedText == null)
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this.HandleTextChange(false);
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if (this.Input.IsKeyPressed(Keys.Left)) {
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this.CaretPos--;
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} else if (this.Input.IsKeyPressed(Keys.Right)) {
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@ -131,7 +145,7 @@ namespace MLEM.Ui.Elements {
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var textPos = this.DisplayArea.Location.ToVector2() + new Vector2(this.TextOffsetX * this.Scale, this.DisplayArea.Height / 2);
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if (this.text.Length > 0 || this.IsSelected) {
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var caret = this.IsSelected ? this.caretBlinkTimer >= 0.5F ? "|" : " " : "";
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var display = this.text.ToString(this.textStartIndex, this.textDisplayLength).Insert(this.CaretPos - this.textStartIndex, caret);
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var display = this.displayedText.Insert(this.CaretPos - this.textOffset, caret);
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this.font.DrawCenteredString(batch, display, textPos, this.TextScale * this.Scale, Color.White * alpha, false, true);
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} else if (this.PlaceholderText != null) {
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this.font.DrawCenteredString(batch, this.PlaceholderText, textPos, this.TextScale * this.Scale, Color.Gray * alpha, false, true);
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@ -82,6 +82,10 @@ namespace MLEM.Ui.Style {
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return text;
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}
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public string TruncateString(string text, float width, float scale, bool fromBack = false) {
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return text;
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}
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}
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}
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@ -10,6 +10,25 @@ namespace MLEM.Extensions {
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return SplitString(s => font.MeasureString(s).X, text, width, scale);
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}
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public static string TruncateString(this SpriteFont font, string text, float width, float scale, bool fromBack = false) {
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return TruncateString(s => font.MeasureString(s).X, text, width, scale, fromBack);
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}
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public static string TruncateString(Func<StringBuilder, float> widthFunc, string text, float width, float scale, bool fromBack = false) {
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var total = new StringBuilder();
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for (var i = 0; i < text.Length; i++) {
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if (fromBack) {
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total.Insert(0, text[text.Length - 1 - i]);
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} else {
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total.Append(text[i]);
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}
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if (widthFunc(total) * scale >= width)
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return total.ToString(fromBack ? 1 : 0, total.Length - 1);
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}
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return total.ToString();
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}
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public static string SplitString(Func<StringBuilder, float> widthFunc, string text, float width, float scale) {
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var total = new StringBuilder();
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foreach (var line in text.Split('\n')) {
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@ -54,5 +54,9 @@ namespace MLEM.Font {
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return this.Font.SplitString(text, width, scale);
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}
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public string TruncateString(string text, float width, float scale, bool fromBack = false) {
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return this.Font.TruncateString(text, width, scale, fromBack);
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}
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}
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}
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@ -28,5 +28,7 @@ namespace MLEM.Font {
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string SplitString(string text, float width, float scale);
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string TruncateString(string text, float width, float scale, bool fromBack = false);
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}
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}
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