75 lines
2.5 KiB
C
75 lines
2.5 KiB
C
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// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
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// SPDX-FileCopyrightText: 2021 Jorrit Rouwe
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// SPDX-License-Identifier: MIT
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#pragma once
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#include <UI/UITexturedQuad.h>
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#include <UI/UIButton.h>
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/// Slider control with up/down button and thumb to select a value
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class UISlider : public UIElement
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{
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public:
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JPH_DECLARE_RTTI_VIRTUAL(JPH_NO_EXPORT, UISlider)
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using ValueChangedAction = function<void(float)>;
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/// Properties
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void SetValue(float inValue) { mCurrentValue = inValue; }
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void SetRange(float inMin, float inMax, float inStep) { mMinValue = inMin; mMaxValue = inMax; mStepValue = inStep; }
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void SetDecreaseButton(UIButton *inDecreaseButton) { mDecreaseButton = inDecreaseButton; }
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void SetIncreaseButton(UIButton *inIncreaseButton) { mIncreaseButton = inIncreaseButton; }
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void SetStaticText(UIStaticText *inStaticText) { mStaticText = inStaticText; UpdateStaticText(); }
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void SetSlider(const UITexturedQuad &inSlider) { mSlider = inSlider; }
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void SetThumb(const UITexturedQuad &inThumb) { mThumb = inThumb; }
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void SetValueChangedAction(ValueChangedAction inAction) { mValueChangedAction = inAction; }
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/// Cloning / copying
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virtual void CopyTo(UIElement *ioElement) const override;
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/// Actions
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virtual bool MouseDown(int inX, int inY) override;
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virtual bool MouseUp(int inX, int inY) override;
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virtual bool MouseMove(int inX, int inY) override;
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virtual void MouseCancel() override;
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/// Draw element
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virtual void Draw() const override;
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/// Event handling (returns true if the event has been handled)
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virtual bool HandleUIEvent(EUIEvent inEvent, UIElement *inSender) override;
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/// Calculate auto layout
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virtual void AutoLayout() override;
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protected:
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/// Pixel range of slider relative to parent
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void GetSliderRange(int &outSliderStart, int &outSliderEnd) const;
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/// X coordinate of thumb start
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int GetThumbStart(int inSliderStart, int inSliderEnd) const;
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/// Internal function to update the value
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void SetValueInternal(float inValue);
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/// Update static text box
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void UpdateStaticText();
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/// Properties
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float mCurrentValue = 0.0f;
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float mMinValue = 0.0f;
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float mMaxValue = 1.0f;
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float mStepValue = 0.1f;
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UIButton * mDecreaseButton = nullptr;
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UIButton * mIncreaseButton = nullptr;
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UIStaticText * mStaticText = nullptr;
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int mSpaceBetweenButtonAndSlider = 5;
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UITexturedQuad mSlider;
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UITexturedQuad mThumb;
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ValueChangedAction mValueChangedAction;
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/// State
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int mThumbDragPoint = -1;
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};
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