You've already forked UnrealEngineUWP
mirror of
https://github.com/izzy2lost/UnrealEngineUWP.git
synced 2026-03-26 18:15:20 -07:00
110 lines
2.3 KiB
C++
110 lines
2.3 KiB
C++
// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.
|
|
|
|
#include "WidgetCarouselPrivatePCH.h"
|
|
|
|
#define LOCTEXT_NAMESPACE "WidgetCarousel"
|
|
|
|
int32 SCarouselNavigationBar::GetItemCount()
|
|
{
|
|
return ItemCount;
|
|
}
|
|
|
|
void SCarouselNavigationBar::SetItemCount(int32 InItemCount)
|
|
{
|
|
ItemCount = InItemCount;
|
|
BuildScrollBar();
|
|
}
|
|
|
|
void SCarouselNavigationBar::Construct(const FArguments& InArgs)
|
|
{
|
|
Style = InArgs._Style;
|
|
OnSelectedIndexChanged = InArgs._OnSelectedIndexChanged;
|
|
ItemCount = InArgs._ItemCount;
|
|
CurrentItemIndex = InArgs._CurrentItemIndex;
|
|
CurrentSlideAmount = InArgs._CurrentSlideAmount;
|
|
|
|
ChildSlot
|
|
[
|
|
SNew(SOverlay)
|
|
+ SOverlay::Slot()
|
|
[
|
|
SNew(SFxWidget)
|
|
.IgnoreClipping(false)
|
|
.VisualOffset(this, &SCarouselNavigationBar::GetPlaceHolderPosition)
|
|
[
|
|
SNew(SHorizontalBox)
|
|
+ SHorizontalBox::Slot()
|
|
.AutoWidth()
|
|
.VAlign(VAlign_Center)
|
|
.HAlign(HAlign_Left)
|
|
[
|
|
SNew(SImage)
|
|
.Image(&Style->HighlightBrush)
|
|
]
|
|
]
|
|
]
|
|
+ SOverlay::Slot()
|
|
[
|
|
SAssignNew(WidgetScrollBox, SHorizontalBox)
|
|
]
|
|
];
|
|
|
|
BuildScrollBar();
|
|
}
|
|
|
|
void SCarouselNavigationBar::BuildScrollBar()
|
|
{
|
|
// May change this to have the scroll bar get their images via delegate rather than rebuild
|
|
WidgetScrollBox->ClearChildren();
|
|
|
|
if (ItemCount > 1)
|
|
{
|
|
for (int32 Index = 0; Index < ItemCount; Index++)
|
|
{
|
|
const FButtonStyle* ButtonStyle;
|
|
if (Index == 0)
|
|
{
|
|
ButtonStyle = &Style->LeftButtonStyle;
|
|
}
|
|
else if (Index == ItemCount - 1)
|
|
{
|
|
ButtonStyle = &Style->RightButtonStyle;
|
|
}
|
|
else
|
|
{
|
|
ButtonStyle = &Style->CenterButtonStyle;
|
|
}
|
|
|
|
WidgetScrollBox->AddSlot()
|
|
.Padding(0)
|
|
.AutoWidth()
|
|
.VAlign(VAlign_Center)
|
|
[
|
|
SNew(SButton)
|
|
.ButtonStyle(ButtonStyle)
|
|
.OnClicked(this, &SCarouselNavigationBar::HandleItemButtonClicked, Index)
|
|
.Cursor(EMouseCursor::Hand)
|
|
];
|
|
}
|
|
}
|
|
}
|
|
|
|
FReply SCarouselNavigationBar::HandleItemButtonClicked(int32 ItemIndex)
|
|
{
|
|
OnSelectedIndexChanged.ExecuteIfBound(ItemIndex);
|
|
BuildScrollBar();
|
|
return FReply::Handled();
|
|
}
|
|
|
|
FVector2D SCarouselNavigationBar::GetPlaceHolderPosition() const
|
|
{
|
|
float WidgetSize = 1.f / (float)ItemCount;
|
|
|
|
float NewPos = CurrentItemIndex.Get() * WidgetSize;
|
|
NewPos -= CurrentSlideAmount.Get() * WidgetSize;
|
|
|
|
return FVector2D(NewPos, 0.f);
|
|
}
|
|
|
|
#undef LOCTEXT_NAMESPACE
|