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Asset Browser: Selection rectangle works with scrolling

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This commit is contained in:
Simon Lübeß
2025-07-06 15:15:21 +02:00
parent 1e614eb944
commit 3e9c9e8202
2 changed files with 44 additions and 47 deletions
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GlitchyEngine/src/ImGui/ImGuiExtension.bf
+31 -25
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@@ -51,61 +51,70 @@ namespace ImGui
NoRender
}
public static bool BeginRectangleSelection(ref float4 selectionRectangle, bool isMouseDown, RectangleSelectionFlags flags = .None)
public struct RectangleSelectionData
{
/*let storage = ImGui.GetStateStorage();
ref float selectionRectX = ref *storage.GetFloatRef(ImGui.GetID("SelectionRect.X"), float.NaN);*/
public float4 SelectionRectangle;
public float2 StartPosition;
public bool IsSelecting;
}
public static bool BeginRectangleSelection(ref RectangleSelectionData selectionData, bool isMouseDown, RectangleSelectionFlags flags = .None)
{
float2 minRegion = (.)ImGui.GetWindowPos();
float2 maxRegion = (.)ImGui.GetCursorPos() + minRegion + (float2)ImGui.GetContentRegionAvail();
ImGui.DrawRect((.)minRegion, (.)maxRegion, ImGui.Color(0,1f,0));
bool selectionValid() => !any(isnan(selectionRectangle));
// ImGui.DrawRect((.)minRegion, (.)maxRegion, ImGui.Color(0,1f,0));
if (isMouseDown)
{
if (!selectionValid() && IsWindowHovered() && !IsAnyItemHovered())
if (!selectionData.IsSelecting && IsWindowHovered() && !IsAnyItemHovered())
{
selectionRectangle.XY = (float2)ImGui.GetMousePos();
selectionData.StartPosition = (float2)ImGui.GetMousePos() - (float2)ImGui.GetCursorScreenPos();
selectionData.IsSelecting = true;
}
selectionRectangle.ZW = (.)ImGui.GetMousePos();
selectionData.SelectionRectangle.ZW = (float2)ImGui.GetMousePos();
}
else
{
selectionRectangle.XYZW = float.NaN;
selectionData.IsSelecting = false;
return false;
}
selectionData.SelectionRectangle.XY = (float2)selectionData.StartPosition + (float2)ImGui.GetCursorScreenPos();
selectionRectangle.XY = clamp(selectionRectangle.XY, minRegion, maxRegion);
selectionRectangle.ZW = clamp(selectionRectangle.ZW, minRegion, maxRegion);
selectionData.SelectionRectangle.ZW = clamp(selectionData.SelectionRectangle.ZW, minRegion, maxRegion);
if (!flags.HasFlag(.NoRender) && selectionValid())
if (!flags.HasFlag(.NoRender) && selectionData.IsSelecting)
{
let drawList = ImGui.GetForegroundDrawList();
drawList.AddRect((.)selectionRectangle.XY, (.)selectionRectangle.ZW, ImGui.GetColorU32(ImGui.Color(0, 130, 216, 255).Value));
drawList.AddRectFilled((.)selectionRectangle.XY, (.)selectionRectangle.ZW, ImGui.GetColorU32(ImGui.Color(0, 130, 216, 50).Value));
float2 clampedStartPoint = clamp(selectionData.SelectionRectangle.XY, minRegion, maxRegion);
drawList.AddRect((.)clampedStartPoint.XY, (.)selectionData.SelectionRectangle.ZW, ImGui.GetColorU32(ImGui.Color(0, 130, 216, 255).Value));
drawList.AddRectFilled((.)clampedStartPoint.XY, (.)selectionData.SelectionRectangle.ZW, ImGui.GetColorU32(ImGui.Color(0, 130, 216, 50).Value));
}
return true;
}
/// Returns true if the user is currently doing a rectangle selection
public static bool IsRectangleSelecting(ref float4 selectionRectangle)
public static bool IsRectangleSelecting(ref RectangleSelectionData selectionData)
{
return !any(isnan(selectionRectangle));
return selectionData.IsSelecting;
}
/// Returns true if the current item is intersecting the selection rectangle
public static bool IsInRectangleSelection(ref float4 selectionRectangle)
public static bool IsInRectangleSelection(ref RectangleSelectionData selectionData)
{
if (any(isnan(selectionRectangle)))
if (!selectionData.IsSelecting)
{
return false;
}
ImGui.DebugDrawItemRect();
// ImGui.DebugDrawItemRect();
float2 minRect = (.)ImGui.GetItemRectMin();
float2 maxRect = (.)ImGui.GetItemRectMax();
@@ -116,11 +125,8 @@ namespace ImGui
Rectangle itemRectangle = .(topLeft, 0);
itemRectangle.BottomRight = bottomRight;
let drawList = ImGui.GetForegroundDrawList();
drawList.AddRect((.)itemRectangle.TopLeft, (.)itemRectangle.BottomRight, ImGui.GetColorU32(ImGui.Color(0, 130, 216, 255).Value));
float2 selectionTopLeft = min(selectionRectangle.XY, selectionRectangle.ZW);
float2 selectionTottomRight = max(selectionRectangle.XY, selectionRectangle.ZW);
float2 selectionTopLeft = min(selectionData.SelectionRectangle.XY, selectionData.SelectionRectangle.ZW);
float2 selectionTottomRight = max(selectionData.SelectionRectangle.XY, selectionData.SelectionRectangle.ZW);
Rectangle rect = .(selectionTopLeft, 0);
rect.BottomRight = selectionTottomRight;