101 lines
4.7 KiB
C++
101 lines
4.7 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
|
|
|
|
#pragma once
|
|
|
|
#include "CoreMinimal.h"
|
|
#include "Fonts/FontMeasure.h"
|
|
#include "Framework/Application/SlateApplication.h"
|
|
#include "Rendering/DrawElements.h"
|
|
|
|
#define MAKE_PAINT_GEOMETRY_PT(Geometry, X, Y) Geometry.ToPaintGeometry(FSlateLayoutTransform(1.0f, FVector2D(X, Y)))
|
|
#define MAKE_PAINT_GEOMETRY_RC(Geometry, X, Y, W, H) Geometry.ToPaintGeometry(FVector2D(W, H), FSlateLayoutTransform(1.0f, FVector2D(X, Y)))
|
|
|
|
struct FGeometry;
|
|
class FSlateRect;
|
|
class WidgetStyle;
|
|
enum class ESlateDrawEffect : uint8;
|
|
class FSlateWindowElementList;
|
|
|
|
/**
|
|
* Holds current state provided by OnPaint function, used to simplify drawing.
|
|
*/
|
|
struct TRACEINSIGHTS_API FDrawContext
|
|
{
|
|
FDrawContext(const FGeometry& InGeometry,
|
|
const FSlateRect& InCullingRect,
|
|
const FWidgetStyle& InWidgetStyle,
|
|
const ESlateDrawEffect InDrawEffects,
|
|
FSlateWindowElementList& InOutElementList,
|
|
int32& InOutLayerId)
|
|
: Geometry(InGeometry), CullingRect(InCullingRect), WidgetStyle(InWidgetStyle), DrawEffects(InDrawEffects), ElementList(InOutElementList), LayerId(InOutLayerId)
|
|
{}
|
|
|
|
/**
|
|
* Non-copyable
|
|
*/
|
|
FDrawContext(const FDrawContext&) = delete;
|
|
FDrawContext& operator=(const FDrawContext&) = delete;
|
|
|
|
inline void DrawBox(const float X, const float Y, const float W, const float H, const FSlateBrush* Brush, const FLinearColor& Color) const
|
|
{
|
|
FSlateDrawElement::MakeBox(ElementList, LayerId, MAKE_PAINT_GEOMETRY_RC(Geometry, X, Y, W, H), Brush, DrawEffects, Color);
|
|
}
|
|
|
|
inline void DrawBox(const int32 InLayer, const float X, const float Y, const float W, const float H, const FSlateBrush* Brush, const FLinearColor& Color) const
|
|
{
|
|
FSlateDrawElement::MakeBox(ElementList, InLayer, MAKE_PAINT_GEOMETRY_RC(Geometry, X, Y, W, H), Brush, DrawEffects, Color);
|
|
}
|
|
|
|
inline void DrawRotatedBox(const float X, const float Y, const float W, const float H, const FSlateBrush* Brush, const FLinearColor& Color, float Angle, TOptional<FVector2D> RotationPoint) const
|
|
{
|
|
FSlateDrawElement::MakeRotatedBox(ElementList, LayerId, MAKE_PAINT_GEOMETRY_RC(Geometry, X, Y, W, H), Brush, DrawEffects, Angle, RotationPoint, FSlateDrawElement::RelativeToElement, Color);
|
|
}
|
|
|
|
inline void DrawText(const float X, const float Y, const FString& Text, const FSlateFontInfo& Font, const FLinearColor& Color) const
|
|
{
|
|
FSlateDrawElement::MakeText(ElementList, LayerId, MAKE_PAINT_GEOMETRY_PT(Geometry, X, Y), Text, Font, DrawEffects, Color);
|
|
}
|
|
|
|
inline void DrawText(const int32 InLayer, const float X, const float Y, const FString& Text, const FSlateFontInfo& Font, const FLinearColor& Color) const
|
|
{
|
|
FSlateDrawElement::MakeText(ElementList, InLayer, MAKE_PAINT_GEOMETRY_PT(Geometry, X, Y), Text, Font, DrawEffects, Color);
|
|
}
|
|
|
|
inline void DrawText(const float X, const float Y, const FString& Text, const int32 StartIndex, const int32 EndIndex, const FSlateFontInfo& Font, const FLinearColor& Color) const
|
|
{
|
|
FSlateDrawElement::MakeText(ElementList, LayerId, MAKE_PAINT_GEOMETRY_PT(Geometry, X, Y), Text, StartIndex, EndIndex, Font, DrawEffects, Color);
|
|
}
|
|
|
|
inline void DrawText(const int32 InLayer, const float X, const float Y, const FString& Text, const int32 StartIndex, const int32 EndIndex, const FSlateFontInfo& Font, const FLinearColor& Color) const
|
|
{
|
|
FSlateDrawElement::MakeText(ElementList, InLayer, MAKE_PAINT_GEOMETRY_PT(Geometry, X, Y), Text, StartIndex, EndIndex, Font, DrawEffects, Color);
|
|
}
|
|
|
|
inline void DrawTextAligned(EHorizontalAlignment HAlign, const float X, const float Y, const FString& Text, const FSlateFontInfo& Font, const FLinearColor& Color) const
|
|
{
|
|
const TSharedRef<FSlateFontMeasure> FontMeasureService = FSlateApplication::Get().GetRenderer()->GetFontMeasureService();
|
|
const float TextWidth = FontMeasureService->Measure(Text, Font).X;
|
|
float TextX = X;
|
|
if (HAlign == HAlign_Right)
|
|
{
|
|
TextX -= TextWidth;
|
|
}
|
|
else if (HAlign == HAlign_Center)
|
|
{
|
|
TextX -= TextWidth / 2;
|
|
}
|
|
FSlateDrawElement::MakeText(ElementList, LayerId, MAKE_PAINT_GEOMETRY_PT(Geometry, TextX, Y), Text, Font, DrawEffects, Color);
|
|
}
|
|
|
|
// inline void IncrementLayer() const { ++LayerId; }
|
|
|
|
// Accessors
|
|
const FGeometry& Geometry;
|
|
const FSlateRect& CullingRect;
|
|
const FWidgetStyle& WidgetStyle;
|
|
const ESlateDrawEffect DrawEffects;
|
|
|
|
FSlateWindowElementList& ElementList;
|
|
int32& LayerId;
|
|
};
|