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Now dealing with image size / aspect ratio changes in embedded rich text images

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This commit is contained in:
Steve Streeting 2020-11-24 15:34:57 +00:00
parent d33ed25bad
commit df20383558
1 changed files with 29 additions and 1 deletions
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30
Source/StevesUEHelpers/Private/StevesUI/RichTextBlockInputImageDecorator.cpp
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@ -42,6 +42,10 @@ protected:
FSlateBrush Brush;
float TimeUntilNextSpriteCheck = 0;
uint16 MaxCharHeight = 0;
TOptional<int32> RequestedWidth;
TOptional<int32> RequestedHeight;
SBox* ContainerBox = nullptr;
public:
SLATE_BEGIN_ARGS(SRichInlineInputImage)
@ -58,6 +62,8 @@ public:
Key = InParams.Key;
PlayerIndex = InParams.PlayerIndex;
Decorator = InParams.Decorator;
RequestedWidth = Width;
RequestedHeight = Height;
// Sadly, we cannot hook into the events needed to update based on input changes here
// All attempts to use GetStevesGameSubsystem() fail because the world pointer
@ -70,7 +76,8 @@ public:
TimeUntilNextSpriteCheck = 0.25f;
const TSharedRef<FSlateFontMeasure> FontMeasure = FSlateApplication::Get().GetRenderer()->GetFontMeasureService();
float IconHeight = FMath::Min((float)FontMeasure->GetMaxCharacterHeight(TextStyle.Font, 1.0f), Brush.ImageSize.Y);
MaxCharHeight = FontMeasure->GetMaxCharacterHeight(TextStyle.Font, 1.0f);
float IconHeight = FMath::Min(static_cast<float>(MaxCharHeight), Brush.ImageSize.Y);
float IconWidth = Brush.ImageSize.X * (IconHeight / Brush.ImageSize.Y) ;
if (Width.IsSet())
@ -119,8 +126,29 @@ public:
// Can only support default theme, no way to edit theme in decorator config
auto Sprite = GS->GetInputImageSprite(BindingType, ActionOrAxisName, Key, PlayerIndex);
if (Sprite && Brush.GetResourceObject() != Sprite)
{
UStevesGameSubsystem::SetBrushFromAtlas(&Brush, Sprite, true);
// Deal with aspect ratio changes
TSharedPtr<SWidget> Widget = ChildSlot.GetWidget();
SBox* Box = static_cast<SBox*>(Widget.Get());
float IconHeight = FMath::Min(static_cast<float>(MaxCharHeight), Brush.ImageSize.Y);
float IconWidth = Brush.ImageSize.X * (IconHeight / Brush.ImageSize.Y) ;
if (RequestedWidth.IsSet())
{
IconWidth = RequestedWidth.GetValue();
}
if (RequestedHeight.IsSet())
{
IconHeight = RequestedHeight.GetValue();
}
Box->SetWidthOverride(IconWidth);
Box->SetHeightOverride(IconHeight);
}
}
TimeUntilNextSpriteCheck = 0.25f;
}