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glitchy-engine-beef/GlitchyEngine/src/ImGui/ImGuiLayer.bf
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252 lines
9.5 KiB
Beef

using System;
using ImGui;
using GlitchyEngine.Events;
using ImGuizmo;
using GlitchyEngine.Renderer;
using System.IO;
using internal ImGui;
#if GE_GRAPHICS_DX11
using GlitchyEngine.Platform.DX11;
using GlitchyEngine.Math;
using internal GlitchyEngine.Platform.DX11;
#endif
namespace GlitchyEngine.ImGui
{
public class ImGuiLayer : Layer
{
ImGui.IO* _io;
public bool SettingsInvalid;
public this() : base("ImGuiLayer") { }
public override void OnAttach()
{
Debug.Profiler.ProfileFunction!();
//ImGuiImplWin32.EnableDpiAwareness();
Log.EngineLogger.Trace("Initializing ImGui...");
ImGui.CHECKVERSION();
ImGui.CreateContext();
ImGui.StyleColorsDark();
_io = ImGui.GetIO();
_io.ConfigFlags |= .NavEnableKeyboard;
_io.ConfigFlags |= .DockingEnable;
_io.ConfigFlags |= .ViewportsEnable;
// Todo: currently broken in ImGui
//io.ConfigFlags |= .DpiEnableScaleFonts;
//io.ConfigFlags |= .DpiEnableScaleViewports;
// When viewports are enabled we tweak WindowRounding/WindowBg so platform windows can look identical to regular ones.
ImGui.Style* style = ImGui.GetStyle();
if(_io.ConfigFlags.HasFlag(.ViewportsEnable))
{
style.WindowRounding = 0.0f;
style.Colors[(int)ImGui.Col.WindowBg].w = 1.0f;
}
#if BF_PLATFORM_WINDOWS
ImGuiImplWin32.Init(Application.Get().Window.NativeWindow);
#endif
#if GE_GRAPHICS_DX11
ImGuiImplDX11.Init(NativeDevice, NativeContext);
#endif
}
public override void OnDetach()
{
Debug.Profiler.ProfileFunction!();
#if GE_GRAPHICS_DX11
ImGuiImplDX11.Shutdown();
#endif
#if BF_PLATFORM_WINDOWS
ImGuiImplWin32.Shutdown();
#endif
ImGui.DestroyContext();
}
public void Begin()
{
Debug.Profiler.ProfileFunction!();
ImGuiImplDX11.NewFrame();
ImGuiImplWin32.NewFrame();
ImGui.NewFrame();
ImGuizmo.BeginFrame();
}
private void LoadFont()
{
var settings = Application.Instance.Settings.ImGuiSettings;
ImGui.GetIO().Fonts.Clear();
Stream fontFile = Application.Instance.ContentManager.GetStream(settings.FontName);
if (fontFile != null)
{
// We need to use ImGuis memory allocator because ImGui takes ownership
uint8* fontData = (uint8*)ImGui.MemAlloc((uint64)fontFile.Length);
var result = fontFile.TryRead(Span<uint8>(fontData, fontFile.Length));
if (result case .Err)
Log.EngineLogger.Error($"Failed to load font \"{settings.FontName}\" from stream.");
ImGui.GetIO().Fonts.AddFontFromMemoryTTF(fontData, (int32)fontFile.Length, settings.FontSize);
}
else
{
ImGui.GetIO().Fonts.AddFontDefault();
}
ApplyDefaultStyle();
ImGui.GetIO().Fonts.AddFontDefault();
delete fontFile;
}
private void ApplyDefaultStyle(ImGui.Style* dst = null)
{
ImGui.Style* style = dst ?? ImGui.GetStyle();
ImGui.Vec4* colors = &style.Colors;
style.FrameRounding = 4;
style.TabRounding = 8;
style.ScrollbarSize = 20;
style.WindowMinSize = ImGui.Vec2(100, 100);
colors[(.)ImGui.Col.WindowBg] = ImGui.Vec4(0.118f, 0.118f, 0.118f, 1.00f);
colors[(.)ImGui.Col.FrameBg] = ImGui.Vec4(0.289f, 0.387f, 0.533f, 1.00f);
colors[(.)ImGui.Col.MenuBarBg] = ImGui.Vec4(0.21f, 0.21f, 0.21f, 1.00f);
colors[(.)ImGui.Col.Header] = ImGui.Vec4(0.267f, 0.295f, 0.329f, 1.00f);
colors[(.)ImGui.Col.Tab] = ImGui.Vec4(0.473f, 0.519f, 0.580f, 1.00f);
colors[(.)ImGui.Col.TabUnfocused] = ImGui.Vec4(0.255f, 0.255f, 0.255f, 1.00f);
colors[(.)ImGui.Col.CheckMark] = ImGui.Vec4(0.851f, 0.863f, 0.900f, 1.00f);
/*colors[(.)ImGui.Col.Text] = ImGui.Vec4(0.00f, 0.00f, 0.00f, 1.00f);
colors[(.)ImGui.Col.TextDisabled] = ImGui.Vec4(0.60f, 0.60f, 0.60f, 1.00f);
colors[(.)ImGui.Col.WindowBg] = ImGui.Vec4(0.94f, 0.94f, 0.94f, 1.00f);
colors[(.)ImGui.Col.ChildBg] = ImGui.Vec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[(.)ImGui.Col.PopupBg] = ImGui.Vec4(1.00f, 1.00f, 1.00f, 0.98f);
colors[(.)ImGui.Col.Border] = ImGui.Vec4(0.00f, 0.00f, 0.00f, 0.30f);
colors[(.)ImGui.Col.BorderShadow] = ImGui.Vec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[(.)ImGui.Col.FrameBg] = ImGui.Vec4(1.00f, 1.00f, 1.00f, 1.00f);
colors[(.)ImGui.Col.FrameBgHovered] = ImGui.Vec4(0.26f, 0.59f, 0.98f, 0.40f);
colors[(.)ImGui.Col.FrameBgActive] = ImGui.Vec4(0.26f, 0.59f, 0.98f, 0.67f);
colors[(.)ImGui.Col.TitleBg] = ImGui.Vec4(0.96f, 0.96f, 0.96f, 1.00f);
colors[(.)ImGui.Col.TitleBgActive] = ImGui.Vec4(0.82f, 0.82f, 0.82f, 1.00f);
colors[(.)ImGui.Col.TitleBgCollapsed] = ImGui.Vec4(1.00f, 1.00f, 1.00f, 0.51f);
colors[(.)ImGui.Col.MenuBarBg] = ImGui.Vec4(0.86f, 0.86f, 0.86f, 1.00f);
colors[(.)ImGui.Col.ScrollbarBg] = ImGui.Vec4(0.98f, 0.98f, 0.98f, 0.53f);
colors[(.)ImGui.Col.ScrollbarGrab] = ImGui.Vec4(0.69f, 0.69f, 0.69f, 0.80f);
colors[(.)ImGui.Col.ScrollbarGrabHovered] = ImGui.Vec4(0.49f, 0.49f, 0.49f, 0.80f);
colors[(.)ImGui.Col.ScrollbarGrabActive] = ImGui.Vec4(0.49f, 0.49f, 0.49f, 1.00f);
colors[(.)ImGui.Col.CheckMark] = ImGui.Vec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[(.)ImGui.Col.SliderGrab] = ImGui.Vec4(0.26f, 0.59f, 0.98f, 0.78f);
colors[(.)ImGui.Col.SliderGrabActive] = ImGui.Vec4(0.46f, 0.54f, 0.80f, 0.60f);
colors[(.)ImGui.Col.Button] = ImGui.Vec4(0.26f, 0.59f, 0.98f, 0.40f);
colors[(.)ImGui.Col.ButtonHovered] = ImGui.Vec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[(.)ImGui.Col.ButtonActive] = ImGui.Vec4(0.06f, 0.53f, 0.98f, 1.00f);
colors[(.)ImGui.Col.Header] = ImGui.Vec4(0.26f, 0.59f, 0.98f, 0.31f);
colors[(.)ImGui.Col.HeaderHovered] = ImGui.Vec4(0.26f, 0.59f, 0.98f, 0.80f);
colors[(.)ImGui.Col.HeaderActive] = ImGui.Vec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[(.)ImGui.Col.Separator] = ImGui.Vec4(0.39f, 0.39f, 0.39f, 0.62f);
colors[(.)ImGui.Col.SeparatorHovered] = ImGui.Vec4(0.14f, 0.44f, 0.80f, 0.78f);
colors[(.)ImGui.Col.SeparatorActive] = ImGui.Vec4(0.14f, 0.44f, 0.80f, 1.00f);
colors[(.)ImGui.Col.ResizeGrip] = ImGui.Vec4(0.35f, 0.35f, 0.35f, 0.17f);
colors[(.)ImGui.Col.ResizeGripHovered] = ImGui.Vec4(0.26f, 0.59f, 0.98f, 0.67f);
colors[(.)ImGui.Col.ResizeGripActive] = ImGui.Vec4(0.26f, 0.59f, 0.98f, 0.95f);
colors[(.)ImGui.Col.Tab] = ImGui.Vec4(0.96f, 0.8f, 0.52f, 1.0f);//ImGui.ImLerp(colors[(.)ImGui.Col.Header], colors[(.)ImGui.Col.TitleBgActive], 0.90f);
colors[(.)ImGui.Col.TabHovered] = ImGui.Vec4(0.73f, 0.78f, 0.95f, 1.0f);
colors[(.)ImGui.Col.TabActive] = ImGui.ImLerp(colors[(.)ImGui.Col.HeaderActive], colors[(.)ImGui.Col.TitleBgActive], 0.60f);
colors[(.)ImGui.Col.TabUnfocused] = ImGui.ImLerp(colors[(.)ImGui.Col.Tab], colors[(.)ImGui.Col.TitleBg], 0.80f);
colors[(.)ImGui.Col.TabUnfocusedActive] = ImGui.ImLerp(colors[(.)ImGui.Col.TabActive], colors[(.)ImGui.Col.TitleBg], 0.40f);
colors[(.)ImGui.Col.DockingPreview] = (.)((float4)colors[(.)ImGui.Col.Header] * (float4)ImGui.Vec4(1.0f, 1.0f, 1.0f, 0.7f));
colors[(.)ImGui.Col.DockingEmptyBg] = ImGui.Vec4(0.20f, 0.20f, 0.20f, 1.00f);
colors[(.)ImGui.Col.PlotLines] = ImGui.Vec4(0.39f, 0.39f, 0.39f, 1.00f);
colors[(.)ImGui.Col.PlotLinesHovered] = ImGui.Vec4(1.00f, 0.43f, 0.35f, 1.00f);
colors[(.)ImGui.Col.PlotHistogram] = ImGui.Vec4(0.90f, 0.70f, 0.00f, 1.00f);
colors[(.)ImGui.Col.PlotHistogramHovered] = ImGui.Vec4(1.00f, 0.45f, 0.00f, 1.00f);
colors[(.)ImGui.Col.TableHeaderBg] = ImGui.Vec4(0.78f, 0.87f, 0.98f, 1.00f);
colors[(.)ImGui.Col.TableBorderStrong] = ImGui.Vec4(0.57f, 0.57f, 0.64f, 1.00f); // Prefer using Alpha=1.0 here
colors[(.)ImGui.Col.TableBorderLight] = ImGui.Vec4(0.68f, 0.68f, 0.74f, 1.00f); // Prefer using Alpha=1.0 here
colors[(.)ImGui.Col.TableRowBg] = ImGui.Vec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[(.)ImGui.Col.TableRowBgAlt] = ImGui.Vec4(0.30f, 0.30f, 0.30f, 0.09f);
colors[(.)ImGui.Col.TextSelectedBg] = ImGui.Vec4(0.26f, 0.59f, 0.98f, 0.35f);
colors[(.)ImGui.Col.DragDropTarget] = ImGui.Vec4(0.26f, 0.59f, 0.98f, 0.95f);
colors[(.)ImGui.Col.NavHighlight] = colors[(.)ImGui.Col.HeaderHovered];
colors[(.)ImGui.Col.NavWindowingHighlight] = ImGui.Vec4(0.70f, 0.70f, 0.70f, 0.70f);
colors[(.)ImGui.Col.NavWindowingDimBg] = ImGui.Vec4(0.20f, 0.20f, 0.20f, 0.20f);
colors[(.)ImGui.Col.ModalWindowDimBg] = ImGui.Vec4(0.20f, 0.20f, 0.20f, 0.35f);*/
}
public void ImGuiRender()
{
Debug.Profiler.ProfileFunction!();
if (SettingsInvalid)
{
LoadFont();
#if GE_GRAPHICS_DX11
ImGuiImplDX11.CreateDeviceObjects();
#endif
SettingsInvalid = false;
}
Begin();
{
Debug.Profiler.ProfileScope!("ImGuiRenderEvent");
var event = scope ImGuiRenderEvent();
Application.Get().OnEvent(event);
}
End();
}
public void End()
{
Debug.Profiler.ProfileFunction!();
ImGui.Render();
RenderCommand.SetDepthStencilTarget(null);
RenderCommand.SetRenderTarget(null);
RenderCommand.BindRenderTargets();
#if GE_GRAPHICS_DX11
using (ContextMonitor.Enter())
{
ImGuiImplDX11.RenderDrawData(ImGui.GetDrawData());
}
#endif
ImGui.CleanupFrame();
if(_io.ConfigFlags.HasFlag(.ViewportsEnable))
{
ImGui.UpdatePlatformWindows();
ImGui.RenderPlatformWindowsDefault();
}
}
}
}