70 lines
2.6 KiB
Ucode
70 lines
2.6 KiB
Ucode
/**
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* Copyright 1998-2013 Epic Games, Inc. All Rights Reserved.
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*
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* This thumbnail renderer displays the texture for the object in question
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*/
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class TextureThumbnailRenderer extends ThumbnailRenderer
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native;
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cpptext
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{
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/**
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* Checks to see if the passed in object supports a thumbnail rendered directly into a system memory buffer for thumbnails
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* instead of setting up a render target and rendering to a texture from the GPU.
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*
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* @param InObject The object to check
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*/
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virtual UBOOL SupportsCPUGeneratedThumbnail(UObject *InObject) const;
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/**
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* Calculates the size the thumbnail would be at the specified zoom level
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*
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* @param Object the object the thumbnail is of
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* @param PrimType ignored
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* @param Zoom the current multiplier of size
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* @param OutWidth the var that gets the width of the thumbnail
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* @param OutHeight the var that gets the height
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*/
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virtual void GetThumbnailSize(UObject* Object,EThumbnailPrimType,
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FLOAT Zoom,DWORD& OutWidth,DWORD& OutHeight);
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/**
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* Draws a thumbnail for the object that was specified
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*
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* @param Object the object to draw the thumbnail for
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* @param PrimType ignored
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* @param X the X coordinate to start drawing at
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* @param Y the Y coordinate to start drawing at
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* @param Width the width of the thumbnail to draw
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* @param Height the height of the thumbnail to draw
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* @param Viewport ignored
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* @param Canvas the render interface to draw with
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* @param BackgroundType type of background for the thumbnail
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* @param PreviewBackgroundColor background color for material previews
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* @param PreviewBackgroundColorTranslucent background color for translucent material previews
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*/
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virtual void Draw(UObject* Object,EThumbnailPrimType,INT X,INT Y,
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DWORD Width,DWORD Height,FRenderTarget*,FCanvas* Canvas,
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EThumbnailBackgroundType BackgroundType,
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FColor PreviewBackgroundColor,
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FColor PreviewBackgroundColorTranslucent);
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/**
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* Draws the thumbnail directly to a CPU memory buffer
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*
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* @param InObject The object to draw
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* @param OutThumbnailBuffer The thumbnail buffer to draw to
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*/
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virtual void DrawCPU( UObject* InObject, FObjectThumbnail& OutThumbnailBuffer) const;
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private:
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/**
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* Converts a 1 bit monochrome texture into a thumbnail for the content browser
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*
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* @param MonochromeTexture The texture to convert
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* @param OutThumbnail The thumbnail object where the thumbnail image data should be stored
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*/
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void MakeThumbnailFromMonochrome( UTexture2D* MonochromeTexture, FObjectThumbnail& OutThumbnail ) const;
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}
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