106 lines
4.1 KiB
C++
106 lines
4.1 KiB
C++
|
// Copyright 2019-Present LexLiu. All Rights Reserved.
|
|||
|
|
|
|||
|
|
#include "Thumbnail/LGUISpriteThumbnailRenderer.h"
|
|||
|
|
#include "EngineModule.h"
|
|||
|
|
#include "RendererInterface.h"
|
|||
|
|
#include "SceneView.h"
|
|||
|
|
#include "Engine/EngineTypes.h"
|
|||
|
|
#include "Core/LGUISpriteData.h"
|
|||
|
|
#include "CanvasItem.h"
|
|||
|
|
#include "EditorStyleSet.h"
|
|||
|
|
#include "CanvasTypes.h"
|
|||
|
|
#include "LGUIEditorUtils.h"
|
|||
|
|
#include "Interfaces/IPluginManager.h"
|
|||
|
|
|
|||
|
|
ULGUISpriteThumbnailRenderer::ULGUISpriteThumbnailRenderer()
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
void ULGUISpriteThumbnailRenderer::Draw(UObject* Object, int32 X, int32 Y, uint32 Width, uint32 Height, FRenderTarget* RenderTarget, FCanvas* Canvas, bool bAdditionalViewFamily)
|
|||
|
|
{
|
|||
|
|
if (ULGUISpriteData* sprite = Cast<ULGUISpriteData>(Object))
|
|||
|
|
{
|
|||
|
|
DrawFrame(sprite, X, Y, Width, Height, RenderTarget, Canvas, nullptr);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
void ULGUISpriteThumbnailRenderer::DrawFrame(class ULGUISpriteData* Sprite, int32 X, int32 Y, uint32 Width, uint32 Height, FRenderTarget*, FCanvas* Canvas, FBoxSphereBounds* OverrideRenderBounds)
|
|||
|
|
{
|
|||
|
|
const UTexture2D* SourceTexture = SourceTexture = Sprite->GetSpriteTexture();
|
|||
|
|
|
|||
|
|
if (SourceTexture != nullptr)
|
|||
|
|
{
|
|||
|
|
const bool bUseTranslucentBlend = SourceTexture->HasAlphaChannel();
|
|||
|
|
DrawGrid(X, Y, Width, Height, Canvas);
|
|||
|
|
|
|||
|
|
// Draw triangles
|
|||
|
|
if (SourceTexture->GetResource() != nullptr)
|
|||
|
|
{
|
|||
|
|
float triangleWidth = Width, triangleHeight = Height;
|
|||
|
|
float textureWidth = SourceTexture->GetSurfaceWidth();
|
|||
|
|
float textureHeight = SourceTexture->GetSurfaceHeight();
|
|||
|
|
float xOffset = 0, yOffset = 0;
|
|||
|
|
if (textureWidth > textureHeight)
|
|||
|
|
{
|
|||
|
|
triangleHeight = Height * textureHeight / textureWidth;
|
|||
|
|
yOffset = (Height - triangleHeight) * 0.5f;
|
|||
|
|
}
|
|||
|
|
else if (textureWidth < textureHeight)
|
|||
|
|
{
|
|||
|
|
triangleWidth = Width * textureWidth / textureHeight;
|
|||
|
|
xOffset = (Width - triangleWidth) * 0.5f;
|
|||
|
|
}
|
|||
|
|
TArray<FCanvasUVTri> Triangles;
|
|||
|
|
const FLinearColor SpriteColor(FLinearColor::White);
|
|||
|
|
|
|||
|
|
FCanvasUVTri* Triangle1 = new (Triangles) FCanvasUVTri();
|
|||
|
|
Triangle1->V0_Pos = FVector2D(X + triangleWidth + xOffset, Y + yOffset); Triangle1->V0_UV = FVector2D(1.0f, 0); Triangle1->V0_Color = SpriteColor;
|
|||
|
|
Triangle1->V1_Pos = FVector2D(X + xOffset, Y + yOffset); Triangle1->V1_UV = FVector2D(0, 0); Triangle1->V1_Color = SpriteColor;
|
|||
|
|
Triangle1->V2_Pos = FVector2D(X + xOffset, Y + triangleHeight + yOffset); Triangle1->V2_UV = FVector2D(0, 1.0f); Triangle1->V2_Color = SpriteColor;
|
|||
|
|
|
|||
|
|
FCanvasUVTri* Triangle2 = new (Triangles) FCanvasUVTri();
|
|||
|
|
Triangle2->V0_Pos = FVector2D(X + triangleWidth + xOffset, Y + yOffset); Triangle2->V0_UV = FVector2D(1.0f, 0); Triangle2->V0_Color = SpriteColor;
|
|||
|
|
Triangle2->V1_Pos = FVector2D(X + xOffset, Y + triangleHeight + yOffset); Triangle2->V1_UV = FVector2D(0, 1.0f); Triangle2->V1_Color = SpriteColor;
|
|||
|
|
Triangle2->V2_Pos = FVector2D(X + triangleWidth + xOffset, Y + triangleHeight + yOffset); Triangle2->V2_UV = FVector2D(1.0f, 1.0f); Triangle2->V2_Color = SpriteColor;
|
|||
|
|
|
|||
|
|
FCanvasTriangleItem CanvasTriangle(Triangles, SourceTexture->GetResource());
|
|||
|
|
CanvasTriangle.BlendMode = bUseTranslucentBlend ? ESimpleElementBlendMode::SE_BLEND_Translucent : ESimpleElementBlendMode::SE_BLEND_Opaque;
|
|||
|
|
Canvas->DrawItem(CanvasTriangle);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
// Fallback for a bogus sprite
|
|||
|
|
DrawGrid(X, Y, Width, Height, Canvas);
|
|||
|
|
}
|
|||
|
|
//draw sprite icon
|
|||
|
|
static FString LGUIBasePath = IPluginManager::Get().FindPlugin(TEXT("LGUI"))->GetBaseDir();
|
|||
|
|
LGUIEditorUtils::DrawThumbnailIcon(LGUIBasePath + TEXT("/Resources/Icons/UISprite_40x.png"), X, Y, Width, Height, Canvas);
|
|||
|
|
}
|
|||
|
|
void ULGUISpriteThumbnailRenderer::DrawGrid(int32 X, int32 Y, uint32 Width, uint32 Height, FCanvas* Canvas)
|
|||
|
|
{
|
|||
|
|
static UTexture2D* GridTexture = Cast<UTexture2D>(FAppStyle::GetBrush("Checkerboard")->GetResourceObject());
|
|||
|
|
if (GridTexture == nullptr)
|
|||
|
|
{
|
|||
|
|
GridTexture = LoadObject<UTexture2D>(nullptr, TEXT("/Engine/EngineMaterials/DefaultWhiteGrid.DefaultWhiteGrid"), nullptr, LOAD_None, nullptr);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
const bool bAlphaBlend = false;
|
|||
|
|
|
|||
|
|
Canvas->DrawTile(
|
|||
|
|
(float)X,
|
|||
|
|
(float)Y,
|
|||
|
|
(float)Width,
|
|||
|
|
(float)Height,
|
|||
|
|
0.0f,
|
|||
|
|
0.0f,
|
|||
|
|
4.0f,
|
|||
|
|
4.0f,
|
|||
|
|
FLinearColor(0.15f, 0.15f, 0.15f),
|
|||
|
|
GridTexture->GetResource(),
|
|||
|
|
bAlphaBlend);
|
|||
|
|
}
|
|||
|
|
void ULGUISpriteThumbnailRenderer::BeginDestroy()
|
|||
|
|
{
|
|||
|
|
Super::BeginDestroy();
|
|||
|
|
}
|