rework completions v1
This commit is contained in:
Matt Parker
@@ -0,0 +1,311 @@
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using System.Collections.Immutable;
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using Godot;
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using SharpIDE.Application.Features.Analysis;
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namespace SharpIDE.Godot.Features.CodeEditor;
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public partial class SharpIdeCodeEdit
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{
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private ImmutableArray<SharpIdeCompletionItem> _codeCompletionOptions = [];
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private Rect2I _codeCompletionRect = new Rect2I();
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private Rect2I _codeCompletionScrollRect = new Rect2I();
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private Vector2I _codeHintMinsize = new Vector2I();
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private Vector2I? _completionTriggerPosition;
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private int _codeCompletionLineOfs = 0;
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private int _codeCompletionForceItemCenter = -1;
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private int _codeCompletionCurrentSelected = 0;
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private bool _isCodeCompletionScrollHovered = false;
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private bool _isCodeCompletionScrollPressed = false;
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private const int MaxLines = 7;
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private int? GetCompletionOptionAtPoint(Vector2I point)
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{
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if (!_codeCompletionRect.HasPoint(point)) return null;
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int rowHeight = GetLineHeight();
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int relativeY = point.Y - _codeCompletionRect.Position.Y;
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int lineIndex = relativeY / rowHeight + _codeCompletionLineOfs;
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if (lineIndex < 0 || lineIndex >= _codeCompletionOptions.Length) return null;
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return lineIndex;
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}
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private void DrawCompletionsPopup()
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{
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var drawCodeCompletion = _codeCompletionOptions.Length > 0;
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var drawCodeHint = false;
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var codeHintDrawBelow = false;
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if (!drawCodeCompletion) return;
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// originally from theme cache
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const int codeCompletionIconSeparation = 4;
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var codeCompletionMinimumSize = new Vector2I(50, 50);
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var lineSpacing = 2;
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var themeScrollWidth = 6;
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//
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var font = GetThemeFont(ThemeStringNames.Font);
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var fontSize = GetThemeFontSize(ThemeStringNames.FontSize);
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var ci = GetCanvasItem();
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var availableCompletions = _codeCompletionOptions.Length; // TODO: Actually get from completions
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var completionsToDisplay = Math.Min(availableCompletions, MaxLines);
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var rowHeight = GetLineHeight();
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var iconAreaSize = new Vector2I(rowHeight, rowHeight);
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var completionMaxWidth = 200;
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var codeCompletionLongestLine = Math.Min(completionMaxWidth,
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_codeCompletionOptions.MaxBy(s => s.CompletionItem.DisplayText.Length)!.CompletionItem.DisplayText.Length * fontSize);
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codeCompletionLongestLine = 500;
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_codeCompletionRect.Size = new Vector2I(
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codeCompletionLongestLine + codeCompletionIconSeparation + iconAreaSize.X + 2,
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completionsToDisplay * rowHeight
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);
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var caretPos = (Vector2I)GetCaretDrawPos();
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var totalHeight = codeCompletionMinimumSize.Y + _codeCompletionRect.Size.Y;
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float minY = caretPos.Y - rowHeight;
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float maxY = caretPos.Y + rowHeight + totalHeight;
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// if (drawCodeHint)
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// {
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// if (codeHintDrawBelow)
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// {
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// maxY += codeHintMinsize.Y;
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// }
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// else
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// {
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// minY -= codeHintMinsize. Y;
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// }
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// }
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bool canFitCompletionAbove = minY > totalHeight;
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var sharpIdeCodeEditSize = GetSize();
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bool canFitCompletionBelow = maxY <= sharpIdeCodeEditSize.Y;
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bool shouldPlaceAbove = !canFitCompletionBelow && canFitCompletionAbove;
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if (!canFitCompletionBelow && !canFitCompletionAbove)
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{
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float spaceAbove = caretPos.Y - rowHeight;
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float spaceBelow = sharpIdeCodeEditSize.Y - caretPos.Y;
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shouldPlaceAbove = spaceAbove > spaceBelow;
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// Reduce the line count and recalculate heights to better fit the completion popup.
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float spaceAvail;
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if (shouldPlaceAbove)
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{
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spaceAvail = spaceAbove - codeCompletionMinimumSize.Y;
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}
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else
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{
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spaceAvail = spaceBelow - codeCompletionMinimumSize.Y;
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}
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int maxLinesFit = Mathf.Max(1, (int)(spaceAvail / rowHeight));
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completionsToDisplay = Mathf.Min(completionsToDisplay, maxLinesFit);
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_codeCompletionRect.Size = new Vector2I(_codeCompletionRect.Size.X, completionsToDisplay * rowHeight);
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totalHeight = codeCompletionMinimumSize.Y + _codeCompletionRect.Size.Y;
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}
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if (shouldPlaceAbove)
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{
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_codeCompletionRect.Position = new Vector2I(
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_codeCompletionRect.Position.X,
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(caretPos.Y - totalHeight - rowHeight) + lineSpacing
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);
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if (drawCodeHint && !codeHintDrawBelow)
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{
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_codeCompletionRect.Position = new Vector2I(
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_codeCompletionRect.Position.X,
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_codeCompletionRect.Position.Y - _codeHintMinsize.Y
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);
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}
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}
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else
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{
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_codeCompletionRect.Position = new Vector2I(
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_codeCompletionRect.Position.X,
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caretPos.Y + (lineSpacing / 2)
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);
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if (drawCodeHint && codeHintDrawBelow)
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{
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_codeCompletionRect.Position = new Vector2I(
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_codeCompletionRect.Position.X,
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_codeCompletionRect.Position.Y + _codeHintMinsize.Y
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);
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}
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}
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var scrollWidth = availableCompletions > MaxLines ? themeScrollWidth : 0;
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// TODO: Fix
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var codeCompletionBase = "";
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const int iconOffset = 25;
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// Desired X position for the popup to start at
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int desiredX = _completionTriggerPosition!.Value.X - iconOffset;
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// Calculate the maximum X allowed so the popup stays inside the parent
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int maxX = (int)sharpIdeCodeEditSize.X - _codeCompletionRect.Size.X - scrollWidth;
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// Clamp the X position so it never overflows to the right
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int finalX = Math.Min(desiredX, maxX);
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_codeCompletionRect.Position = new Vector2I(finalX, _codeCompletionRect.Position.Y);
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//var completionStyle = GetThemeStylebox(ThemeStringNames.Completion);
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// I don't know what this is used for, but it puts a weird block box around the completions
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// completionStyle.Draw(
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// ci,
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// new Rect2(
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// codeCompletionRect.Position - completionStyle.GetOffset(),
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// codeCompletionRect.Size + codeCompletionMinimumSize + new Vector2I(scrollWidth, 0)
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// )
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// );
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var codeCompletionBackgroundColor = GetThemeColor(ThemeStringNames.CompletionBackgroundColor);
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if (codeCompletionBackgroundColor.A > 0.01f)
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{
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RenderingServer.Singleton.CanvasItemAddRect(
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ci,
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new Rect2(_codeCompletionRect.Position, _codeCompletionRect.Size + new Vector2I(scrollWidth, 0)),
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codeCompletionBackgroundColor
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);
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}
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_codeCompletionScrollRect.Position = _codeCompletionRect.Position + new Vector2I(_codeCompletionRect.Size.X, 0);
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_codeCompletionScrollRect.Size = new Vector2I(scrollWidth, _codeCompletionRect.Size.Y);
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_codeCompletionLineOfs = Mathf.Clamp(
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(_codeCompletionForceItemCenter < 0 ? _codeCompletionCurrentSelected : _codeCompletionForceItemCenter) -
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completionsToDisplay / 2,
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0,
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availableCompletions - completionsToDisplay
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);
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var codeCompletionSelectedColor = GetThemeColor(ThemeStringNames.CompletionSelectedColor);
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RenderingServer.Singleton.CanvasItemAddRect(
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ci,
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new Rect2(
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new Vector2(
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_codeCompletionRect.Position.X,
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_codeCompletionRect.Position.Y + (_codeCompletionCurrentSelected - _codeCompletionLineOfs) * rowHeight
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),
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new Vector2(_codeCompletionRect.Size.X, rowHeight)
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),
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codeCompletionSelectedColor
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);
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// TODO: Cache
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string lang = OS.GetLocale();
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for (int i = 0; i < completionsToDisplay; i++)
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{
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int l = _codeCompletionLineOfs + i;
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if (l < 0 || l >= availableCompletions)
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{
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GD.PushError($"Invalid line index: {l}");
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continue;
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}
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var sharpIdeCompletionItem = _codeCompletionOptions[l];
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var displayText = sharpIdeCompletionItem.CompletionItem.DisplayText;
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TextLine tl = new TextLine();
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tl.AddString(
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displayText,
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font,
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fontSize,
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lang
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);
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float yofs = (rowHeight - tl.GetSize().Y) / 2;
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Vector2 titlePos = new Vector2(
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_codeCompletionRect.Position.X,
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_codeCompletionRect.Position.Y + i * rowHeight + yofs
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);
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/* Draw completion icon if it is valid. */
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var icon = GetIconForCompletion(sharpIdeCompletionItem);
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Rect2 iconArea = new Rect2(
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new Vector2(_codeCompletionRect.Position.X, _codeCompletionRect.Position.Y + i * rowHeight),
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iconAreaSize
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);
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if (icon != null)
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{
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Vector2 iconSize = iconArea.Size * 0.7f;
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icon.DrawRect(
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ci,
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new Rect2(
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iconArea.Position + (iconArea.Size - iconSize) / 2,
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iconSize
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),
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false
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);
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}
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titlePos.X = iconArea.Position.X + iconArea.Size.X + codeCompletionIconSeparation;
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tl.Width = _codeCompletionRect.Size.X - (iconAreaSize.X + codeCompletionIconSeparation);
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tl.Alignment = HorizontalAlignment.Left;
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Vector2 matchPos = new Vector2(
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_codeCompletionRect.Position.X + iconAreaSize.X + codeCompletionIconSeparation,
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_codeCompletionRect.Position.Y + i * rowHeight
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);
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foreach (var matchSegment in sharpIdeCompletionItem.MatchedSpans ?? [])
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{
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float matchOffset = font.GetStringSize(
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displayText.Substr(0, matchSegment.Start),
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HorizontalAlignment.Left,
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-1,
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fontSize
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).X;
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float matchLen = font.GetStringSize(
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displayText.Substr(matchSegment.Start, matchSegment.Length),
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HorizontalAlignment.Left,
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-1,
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fontSize
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).X;
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RenderingServer.Singleton.CanvasItemAddRect(
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ci,
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new Rect2(matchPos + new Vector2(matchOffset, 0), new Vector2(matchLen, rowHeight)),
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GetThemeColor(ThemeStringNames.CompletionExistingColor)
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);
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}
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var fontColour = Colors.White;
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tl.Draw(ci, titlePos, fontColour);
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}
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/* Draw a small scroll rectangle to show a position in the options. */
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if (scrollWidth > 0)
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{
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Color scrollColor = _isCodeCompletionScrollHovered || _isCodeCompletionScrollPressed
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? GetThemeColor(ThemeStringNames.CompletionScrollHoveredColor)
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: GetThemeColor(ThemeStringNames.CompletionScrollColor);
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float r = (float)MaxLines / availableCompletions;
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float o = (float)_codeCompletionLineOfs / availableCompletions;
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RenderingServer.Singleton.CanvasItemAddRect(
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ci,
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new Rect2(
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new Vector2(
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_codeCompletionRect.Position.X + _codeCompletionRect.Size.X,
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_codeCompletionRect.Position.Y + o * _codeCompletionRect.Size.Y
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),
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new Vector2(scrollWidth, _codeCompletionRect.Size.Y * r)
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),
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scrollColor
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);
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}
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}
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}
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