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feature complete! the symbol browser stays in view and is easy to offset
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@domportera
domportera committed Oct 8, 2022
1 parent 5f03b3c commit d911835
Showing 1 changed file with 74 additions and 28 deletions.
102 changes: 74 additions & 28 deletions T3/Gui/Graph/Interaction/SymbolBrowser.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -81,29 +81,29 @@ public void Draw()
_drawList = ImGui.GetWindowDrawList();

ImGui.SetNextWindowFocus();
ImGui.SetCursorPos(posInWindow + new Vector2(1, _size.Y + 1));

ImGui.PushStyleVar(ImGuiStyleVar.FramePadding, new Vector2(5, 5));
ImGui.PushStyleVar(ImGuiStyleVar.ItemSpacing, new Vector2(10, 10));
Vector2 browserPositionInWindow;
ShiftPositionToFitOnCanvas(out browserPositionInWindow, posInWindow + _browserPositionOffset, _resultListSize);

ImGui.SetCursorPos(browserPositionInWindow);

DrawResultsList(_resultListSize);

if (_lastHoveredSymbolUi != null)
{
DrawDescriptionPanelLeftOrRight(posInWindow, _resultListSize, _lastHoveredSymbolUi);
DrawDescriptionPanelFitOnCanvas(browserPositionInWindow, _resultListSize, _lastHoveredSymbolUi);
}

ImGui.PopStyleVar(2);
DrawSearchInput(posInWindow, _size.X);
DrawSearchInput(browserPositionInWindow, _size);
}

_drawList.AddRect(_posInScreen, OutputPositionOnScreen, Color.Gray);
ImGui.PopID();
}
#endregion

#region internal implementation -----------------------------------------------------------
private void DrawSearchInput(Vector2 posInWindow, float width)

private void DrawSearchInput(Vector2 posInWindow, Vector2 size)
{
//ImGui.SetNextItemWidth(90);

Expand All @@ -113,12 +113,24 @@ private void DrawSearchInput(Vector2 posInWindow, float width)
_focusInputNextTime = false;
}

ImGui.SetCursorPos(posInWindow);
var offset = new Vector2(2, -size.Y - 12);
posInWindow += offset;

ImGui.PushStyleVar(ImGuiStyleVar.FramePadding, new Vector2(7, 6));
ImGui.SetNextItemWidth(width);
ImGui.SetCursorPos(posInWindow );

var padding = new Vector2(7, 6);
ImGui.PushStyleVar(ImGuiStyleVar.FramePadding, padding);
ImGui.SetNextItemWidth(_size.X);

ImGui.InputText("##symbolbrowserfilter", ref _filter.SearchString, 10);

// Search input outline
var outlinePadding = new Vector2(0, padding.X);
var outlineOffset = new Vector2(0, size.Y * 2);
var min = posInWindow + outlineOffset - outlinePadding / 2f;
var max = min + new Vector2(size.X, size.Y) + outlinePadding;
_drawList.AddRect(min, max, Color.Gray);

if (ImGui.IsKeyReleased((ImGuiKey)Key.CursorDown))
{
SelectNextSymbolUi(_selectedSymbolUi);
Expand Down Expand Up @@ -202,6 +214,8 @@ private void Close()

private void DrawResultsList(Vector2 size)
{
ImGui.PushStyleVar(ImGuiStyleVar.FramePadding, new Vector2(5, 5));
ImGui.PushStyleVar(ImGuiStyleVar.ItemSpacing, new Vector2(10, 10));
var itemForHelpIsHovered = false;

if (ImGui.BeginChildFrame(999, size))
Expand Down Expand Up @@ -278,6 +292,8 @@ private void DrawResultsList(Vector2 size)
}

ImGui.EndChildFrame();

ImGui.PopStyleVar(2);
}

private SymbolUi DetermineItemForHelp(SymbolUi symbolUi, bool isSelected, bool isHovered)
Expand Down Expand Up @@ -352,22 +368,53 @@ private void PrintTypeFilter()
ImGui.PopFont();
}

private void DrawDescriptionPanelLeftOrRight(Vector2 posInWindow, Vector2 size, SymbolUi highlightedSymbolUi)
private void DrawDescriptionPanelFitOnCanvas(Vector2 resultsListPosition, Vector2 size, SymbolUi highlightedSymbolUi)
{
var width = _resultListSize.X;
var shouldShiftToRight = posInWindow.X + width > GraphCanvas.Current.WindowSize.X;
var xPositionOffset = shouldShiftToRight ? -width : width;
var xPosition = posInWindow.X + xPositionOffset;
Vector2 descriptionPanelPosition;
ShiftDescriptionPositionToFitOnCanvas(out descriptionPanelPosition, resultsListPosition, _resultListSize);

var position = new Vector2(xPosition, posInWindow.Y + _size.Y + 1);

if (xPosition <= 0)
//if it simply doesn't fit on screen, return
if (descriptionPanelPosition.X <= 0)
return;
ImGui.SetCursorPos(position);

ImGui.SetCursorPos(descriptionPanelPosition);
DrawDescriptionPanel(highlightedSymbolUi, size);
}

private void ShiftDescriptionPositionToFitOnCanvas(out Vector2 newPosition, Vector2 resultsWindowPosition, Vector2 size)
{
var maxXPos = resultsWindowPosition.X + size.X * 2;
var shouldShiftLeft = maxXPos >= GraphCanvas.Current.WindowSize.X;
var xPositionOffset = shouldShiftLeft ? -size.X : size.X;

newPosition = new Vector2
{
X = resultsWindowPosition.X + xPositionOffset,
Y = resultsWindowPosition.Y
};
}

private void ShiftPositionToFitOnCanvas(out Vector2 newPosition, Vector2 originalPosition, Vector2 size)
{
var maxXPos = originalPosition.X + size.X;
var maxYPos = originalPosition.Y + size.Y;

var windowSize = GraphCanvas.Current.WindowSize;

var shouldShiftLeft = maxXPos > windowSize.X;
var xPositionOffset = shouldShiftLeft ? windowSize.X - maxXPos : 0;

var shouldShiftUp = maxYPos > windowSize.Y;
var yPositionOffset = shouldShiftUp ? windowSize.Y - maxYPos : 0;

newPosition = new Vector2
{
X = originalPosition.X + xPositionOffset,
Y = originalPosition.Y + yPositionOffset
};
}


private void DrawDescriptionPanel(SymbolUi itemForHelp, Vector2 size)
{
if (itemForHelp == null)
Expand All @@ -382,7 +429,7 @@ private void DrawDescriptionPanel(SymbolUi itemForHelp, Vector2 size)

ImGui.PushStyleVar(ImGuiStyleVar.ItemSpacing, Vector2.One); // Padding between panels

if (ImGui.BeginChildFrame(998, size, ImGuiWindowFlags.ChildWindow))
if (ImGui.BeginChildFrame(998, size))
{
if (!string.IsNullOrEmpty(itemForHelp.Description))
{
Expand All @@ -394,18 +441,16 @@ private void DrawDescriptionPanel(SymbolUi itemForHelp, Vector2 size)
if (hasExamples)
{
ImGui.Dummy(new Vector2(10, 10));

ListExampleOperators(itemForHelp);
}

ImGui.EndChildFrame();
}

if(_canExpireDescription && ImGui.IsItemHovered())
{
_lastHoveredSymbolUi = null;
}
if (_canExpireDescription && ImGui.IsItemHovered())
{
_lastHoveredSymbolUi = null;
}


ImGui.PopStyleVar();
}
Expand Down Expand Up @@ -550,6 +595,7 @@ private void CreateInstance(Symbol symbol)
public bool IsOpen;

private readonly Vector2 _size = SymbolChildUi.DefaultOpSize;
private static Vector2 _browserPositionOffset => new Vector2(-20, 0);

private bool _focusInputNextTime;
private Vector2 _posInScreen;
Expand Down

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