116 lines
3.3 KiB
C++
116 lines
3.3 KiB
C++
// Copyright (c) 2023 Dominic Masters
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//
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// This software is released under the MIT License.
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// https://opensource.org/licenses/MIT
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#pragma once
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#include "scene/SceneItemComponent.hpp"
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#include "scene/components/display/IRenderable.hpp"
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#include "display/RenderPipeline.hpp"
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#include "display/RenderManager.hpp"
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#include "UICanvas.hpp"
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#include "util/mathutils.hpp"
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namespace Dawn {
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enum UIComponentAlign {
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UI_COMPONENT_ALIGN_START,
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UI_COMPONENT_ALIGN_MIDDLE,
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UI_COMPONENT_ALIGN_END,
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UI_COMPONENT_ALIGN_STRETCH
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};
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enum UIComponentAlignUnit {
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UI_COMPONENT_ALIGN_UNIT_SCALE,
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UI_COMPONENT_ALIGN_UNIT_PERCENT
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};
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class UIComponent : public SceneItemComponent, public UIComponentDimensional {
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protected:
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float_t width = 1;
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float_t height = 1;
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/**
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* Simply returns this UI Components' dimensional parent, used for the
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* alignment of this item.
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*
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* @return Pointer to the parent dimensional.
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*/
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UIComponentDimensional * getParentDimensional();
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/**
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* Internal method to update the alignment of this item.
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*/
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void updateAlignment();
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public:
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StateProperty<bool_t> alignmentNeedsUpdating;
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StateEvent<> eventAlignmentUpdated;
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/**
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* Method used to calculate alignment values.
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*
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* @param alignmentValue Alignment value.
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* @param parentSize Parent size.
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* @param unit Alignment unit.
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* @return The calculated alignment value.
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*/
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static float_t calculateAlignmentValue(
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float_t alignmentValue,
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float_t parentSize,
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enum UIComponentAlignUnit unit
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);
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/**
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* Method used to calculate alignment dimensions.
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*
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* @param align Alignment value enumator.
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* @param unitStart Alignment start unit.
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* @param unitEnd Alignment end unit.
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* @param position Output position floating point.
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* @param size Output size floating point.
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* @param outerSize Outer size (of the parent).
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* @param innerSize Inner size (of this element's content).
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* @param alignment Alignment settings.
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*/
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static void calculateDimensions(
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enum UIComponentAlign align,
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enum UIComponentAlignUnit unitStart,
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enum UIComponentAlignUnit unitEnd,
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float_t *position,
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float_t *size,
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float_t outerSize,
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float_t innerSize,
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glm::vec2 alignment
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);
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// @optional
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StateProperty<enum UIComponentAlign> alignX;
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// @optional
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StateProperty<enum UIComponentAlign> alignY;
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// @optional
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StateProperty<enum UIComponentAlignUnit> alignUnitLeft;
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// @optional
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StateProperty<enum UIComponentAlignUnit> alignUnitTop;
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// @optional
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StateProperty<enum UIComponentAlignUnit> alignUnitRight;
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// @optional
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StateProperty<enum UIComponentAlignUnit> alignUnitBottom;
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// @optional
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StateProperty<glm::vec4> alignment;
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UIComponent(SceneItem *item);
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/**
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* Returns the canvas that this UI element is belonging to.
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*
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* @return Pointer to the UI Canvas this component is a child of.
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*/
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virtual UICanvas * getCanvas();
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float_t getWidth() override;
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float_t getHeight() override;
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void onStart() override;
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friend class UICanvas;
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};
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} |