wehub-resource-sync
99 lines
2.9 KiB
C#
99 lines
2.9 KiB
C#
using ImGuiNET;
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namespace T3.Editor.Gui.UiHelpers;
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/// <summary>
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/// Framework for rendering modal dialogs.
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///
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/// Should be implemented like...
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///
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/// void SomeClass {
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/// void Draw() {
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/// _someDialog.Draw();
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///
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/// if(ImGui.Button()) {
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/// _someDialog.ShowNextFrame();
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/// }
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/// }
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/// }
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///
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/// void SomeDialog()
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/// {
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/// void Draw()
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/// {
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/// if(BeginDialog("myTitle"))
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/// {
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///
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/// // draw your content...
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///
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/// EndDialogContent();
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/// }
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/// EndDialog();
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/// }
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/// }
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///
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/// </summary>
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public abstract class ModalDialog
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{
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internal void ShowNextFrame()
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{
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_shouldShowNextFrame = true;
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OnShowNextFrame();
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}
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// Todo - should be an abstract function other modal dialogs can use to initialize their values
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protected virtual void OnShowNextFrame(){}
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protected bool BeginDialog(string title)
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{
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if (_shouldShowNextFrame)
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{
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_shouldShowNextFrame = false;
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ImGui.OpenPopup(title);
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}
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// DialogSize is a minimum: the dialog grows with its content so primary actions at the
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// bottom are never cut off, and falls back to a scrollbar once it hits the screen limit.
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// Content must have intrinsic height — a bottom-anchored child (new Vector2(0, -h))
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// feeds back into AlwaysAutoResize and grows the window every frame.
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var minSize = DialogSize * T3Ui.UiScaleFactor;
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var maxHeight = MathF.Max(minSize.Y, ImGui.GetMainViewport().WorkSize.Y * 0.9f);
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ImGui.SetNextWindowSizeConstraints(minSize, new Vector2(minSize.X, maxHeight));
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ImGui.PushStyleVar(ImGuiStyleVar.WindowPadding, new Vector2(Padding, Padding));
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bool isOpen = true;
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// ImGuiWindowFlags.Popup is an internal-only flag in ImGui 1.90; passing it crashes the native call.
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if (!ImGui.BeginPopupModal(title, ref isOpen, Flags | ImGuiWindowFlags.AlwaysAutoResize))
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return false;
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ImGui.PushStyleVar(ImGuiStyleVar.ItemSpacing, ItemSpacing);
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FrameStats.Current.OpenedPopUpName = title;
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FrameStats.Current.IsModalDialogOpen = true;
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FrameStats.Current.OpenedPopupHovered = ImGui.IsWindowHovered();
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return true;
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}
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/// <summary>
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/// Only call if BeginDialog returned true
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/// </summary>
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protected static void EndDialogContent()
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{
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ImGui.PopStyleVar();
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ImGui.EndPopup();
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}
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/// <summary>
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/// Call always
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/// </summary>
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protected static void EndDialog()
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{
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ImGui.PopStyleVar();
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}
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private bool _shouldShowNextFrame;
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protected Vector2 DialogSize = new(500, 350);
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protected Vector2 ItemSpacing = new(4, 10);
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protected float Padding = 20;
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protected ImGuiWindowFlags Flags = ImGuiWindowFlags.None;
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} |