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added the ability to display images in paragraphs

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This commit is contained in:
Ellpeck 2019-09-05 20:28:05 +02:00
parent e39394bce3
commit 35ee509eac
4 changed files with 96 additions and 53 deletions
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12
Demos/UiDemo.cs
View file

@ -11,6 +11,7 @@ using MLEM.Startup;
using MLEM.Textures;
using MLEM.Ui;
using MLEM.Ui.Elements;
using MLEM.Ui.Format;
using MLEM.Ui.Style;
namespace Demos {
@ -33,6 +34,7 @@ namespace Demos {
public override void LoadContent() {
this.testTexture = LoadContent<Texture2D>("Textures/Test");
this.testPatch = new NinePatch(new TextureRegion(this.testTexture, 0, 8, 24, 24), 8);
var tree = new TextureRegion(LoadContent<Texture2D>("Textures/Tree"));
base.LoadContent();
// create a new style
@ -90,9 +92,16 @@ namespace Demos {
});
root.AddChild(new VerticalSpace(3));
// a paragraph with formatting codes. To see them all or to add more, check the TextFormatting class
root.AddChild(new Paragraph(Anchor.AutoLeft, 1, "Paragraphs can also contain [Blue]formatting codes[White], including colors and [Italic]text styles[Regular]. The names of all [Orange]MonoGame Colors[White] can be used, as well as the codes [Italic]Italic[Regular] and [Bold]Bold[Regular]. \n[Italic]Even [CornflowerBlue]Cornflower Blue[White] works!"));
// adding some custom image formatting codes
// note that all added formatting codes need to be lowercase, while their casing doesn't matter when used
TextFormatting.FormattingCodes["grass"] = new FormattingCode(image.Texture);
TextFormatting.FormattingCodes["tree"] = new FormattingCode(tree);
root.AddChild(new Paragraph(Anchor.AutoLeft, 1, "Additionally, you can create custom formatting codes that contain [Grass] images! Note that these images have to be square, or [Tree] bad things happen."));
root.AddChild(new VerticalSpace(3));
root.AddChild(new Paragraph(Anchor.AutoCenter, 1, "Text input:", true));
root.AddChild(new TextField(Anchor.AutoLeft, new Vector2(1, 10)) {
@ -170,8 +179,7 @@ namespace Demos {
PositionOffset = new Vector2(0, 1)
});
var region = new TextureRegion(LoadContent<Texture2D>("Textures/Tree"));
root.AddChild(ElementHelper.ImageButton(Anchor.AutoLeft, new Vector2(1, 10), region, "Button with image")).PositionOffset = new Vector2(0, 1);
root.AddChild(ElementHelper.ImageButton(Anchor.AutoLeft, new Vector2(1, 10), tree, "Button with image")).PositionOffset = new Vector2(0, 1);
// Below are some querying examples that help you find certain elements easily

40
MLEM.Ui/Elements/Paragraph.cs
View file

@ -77,44 +77,8 @@ namespace MLEM.Ui.Elements {
if (this.codeLocations.Count <= 0) {
this.regularFont.DrawString(batch, this.splitText, pos, this.TextColor * alpha, 0, Vector2.Zero, sc, SpriteEffects.None, 0);
} else {
// if we have formatting codes, we need to go through each index and see how it should be drawn
var characterCounter = 0;
var currColor = this.TextColor;
var currFont = this.regularFont;
var innerOffset = new Vector2();
foreach (var c in this.splitText) {
// check if the current character's index has a formatting code
this.codeLocations.TryGetValue(characterCounter, out var code);
if (code != null) {
// if so, apply it
if (code.IsColorCode) {
currColor = code.Color;
} else {
switch (code.Style) {
case TextStyle.Regular:
currFont = this.regularFont;
break;
case TextStyle.Bold:
currFont = this.boldFont;
break;
case TextStyle.Italic:
currFont = this.italicFont;
break;
}
}
}
characterCounter++;
var cSt = c.ToString();
if (c == '\n') {
innerOffset.X = 0;
innerOffset.Y += this.regularFont.LineHeight * sc;
} else {
currFont.DrawString(batch, cSt, pos + innerOffset, currColor * alpha, 0, Vector2.Zero, sc, SpriteEffects.None, 0);
innerOffset.X += this.regularFont.MeasureString(cSt).X * sc;
}
}
// if we have formatting codes, we should do it
this.regularFont.DrawFormattedString(batch, pos, this.splitText, this.codeLocations, this.TextColor * alpha, sc, this.boldFont, this.italicFont);
}
base.Draw(time, batch, alpha);
}

26
MLEM.Ui/Format/FormattingCode.cs
View file

@ -1,20 +1,40 @@
using System;
using Microsoft.Xna.Framework;
using MLEM.Textures;
namespace MLEM.Ui.Format {
public class FormattingCode {
public readonly Type CodeType;
public readonly Color Color;
public readonly TextStyle Style;
public readonly bool IsColorCode;
public readonly TextureRegion Icon;
public FormattingCode(Color color) {
this.Color = color;
this.IsColorCode = true;
this.CodeType = Type.Color;
}
public FormattingCode(TextStyle style) {
this.Style = style;
this.IsColorCode = false;
this.CodeType = Type.Style;
}
public FormattingCode(TextureRegion icon) {
this.Icon = icon;
this.CodeType = Type.Icon;
}
public string GetReplacementString() {
return this.CodeType == Type.Icon ? TextFormatting.OneEmString : string.Empty;
}
public enum Type {
Color,
Style,
Icon
}
}

71
MLEM.Ui/Format/TextFormatting.cs
View file

@ -2,13 +2,17 @@ using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using MLEM.Extensions;
using MLEM.Font;
using MLEM.Textures;
namespace MLEM.Ui.Format {
public static class TextFormatting {
private static Regex formatRegex;
public static readonly Dictionary<string, FormattingCode> FormattingCodes = new Dictionary<string, FormattingCode>();
public static string OneEmString = " ";
private static Regex formatRegex;
static TextFormatting() {
SetFormatIndicators('[', ']');
@ -33,22 +37,69 @@ namespace MLEM.Ui.Format {
}
public static string RemoveFormatting(this string s) {
return formatRegex.Replace(s, string.Empty);
return formatRegex.Replace(s, match => FromMatch(match).GetReplacementString());
}
public static Dictionary<int, FormattingCode> GetFormattingCodes(this string s, bool indicesIgnoreCode = true) {
public static Dictionary<int, FormattingCode> GetFormattingCodes(this string s) {
var codes = new Dictionary<int, FormattingCode>();
var codeLengths = 0;
foreach (Match match in formatRegex.Matches(s)) {
var rawCode = match.Value.Substring(1, match.Value.Length - 2).ToLowerInvariant();
codes[match.Index - codeLengths] = FormattingCodes[rawCode];
// if indices of formatting codes should ignore the codes themselves, then the lengths of all
// of the codes we have sound so far needs to be subtracted from the found code's index
if (indicesIgnoreCode)
codeLengths += match.Length;
var code = FromMatch(match);
codes[match.Index - codeLengths] = code;
codeLengths += match.Length - code.GetReplacementString().Length;
}
return codes;
}
public static void DrawFormattedString(this IGenericFont regularFont, SpriteBatch batch, Vector2 pos, string text, Dictionary<int, FormattingCode> codeLocations, Color color, float scale, IGenericFont boldFont = null, IGenericFont italicFont = null, float depth = 0) {
var characterCounter = 0;
var currColor = color;
var currFont = regularFont;
var innerOffset = new Vector2();
foreach (var c in text) {
// check if the current character's index has a formatting code
codeLocations.TryGetValue(characterCounter, out var code);
if (code != null) {
// if so, apply it
if (code.CodeType == FormattingCode.Type.Color) {
currColor = code.Color.CopyAlpha(color);
} else if (code.CodeType == FormattingCode.Type.Style) {
switch (code.Style) {
case TextStyle.Regular:
currFont = regularFont;
break;
case TextStyle.Bold:
currFont = boldFont ?? regularFont;
break;
case TextStyle.Italic:
currFont = italicFont ?? regularFont;
break;
}
} else if (code.CodeType == FormattingCode.Type.Icon) {
var iconSc = new Vector2(1F / code.Icon.Width, 1F / code.Icon.Height) * regularFont.LineHeight * scale;
batch.Draw(code.Icon, pos + innerOffset, color, 0, Vector2.Zero, iconSc, SpriteEffects.None, depth);
}
}
characterCounter++;
var cSt = c.ToString();
if (c == '\n') {
innerOffset.X = 0;
innerOffset.Y += regularFont.LineHeight * scale;
} else {
currFont.DrawString(batch, cSt, pos + innerOffset, currColor, 0, Vector2.Zero, scale, SpriteEffects.None, depth);
// we measure the string with the regular font here so that previously split
// strings don't get too long with a bolder font. This shouldn't effect visuals too much
innerOffset.X += regularFont.MeasureString(cSt).X * scale;
}
}
}
private static FormattingCode FromMatch(Capture match) {
var rawCode = match.Value.Substring(1, match.Value.Length - 2).ToLowerInvariant();
return FormattingCodes[rawCode];
}
}
}