mirror of
https://github.com/geode-sdk/geode.git
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448 lines
15 KiB
C++
Vendored
448 lines
15 KiB
C++
Vendored
#pragma once
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#include "../include/ccMacros.h"
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#include "../cocoa/CCAffineTransform.h"
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#include "../cocoa/CCArray.h"
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#include <Geode/platform/platform.hpp>
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#include <optional>
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#include <memory>
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NS_CC_BEGIN
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class CCNode;
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#pragma warning(push)
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#pragma warning(disable: 4275)
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/**
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* Layouts automatically handle the positioning of nodes. Use CCNode::setLayout
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* to apply a layout to a node, and then use CCNode::updateLayout to apply
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* the layout's positioning. Geode comes with a few default layouts like
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* RowLayout, ColumnLayout, and GridLayout, but if you need a different kind
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* of layout you can inherit from the Layout class.
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*/
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class GEODE_DLL Layout : public CCObject {
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protected:
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CCArray* getNodesToPosition(CCNode* forNode) const;
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bool m_ignoreInvisibleChildren = false;
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public:
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/**
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* Automatically apply the layout's positioning on a set of nodes
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* @param on Node to apply the layout on. Position's the node's children
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* according to the layout. The content size of the node should be
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* respected as a boundary the layout shouldn't overflow. The node may be
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* rescaled to better fit its contents
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*/
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virtual void apply(CCNode* on) = 0;
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/**
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* Get how much space this layout would like to take up for a given target
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*/
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virtual CCSize getSizeHint(CCNode* on) const = 0;
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void ignoreInvisibleChildren(bool ignore);
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bool isIgnoreInvisibleChildren() const;
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virtual ~Layout() = default;
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};
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class GEODE_DLL LayoutOptions : public CCObject {
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public:
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virtual ~LayoutOptions() = default;
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};
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/**
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* The direction of an AxisLayout
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*/
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enum class Axis {
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Row,
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Column,
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};
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/**
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* Specifies the alignment of something in an AxisLayout
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*/
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enum class AxisAlignment {
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// Align items to the start
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// |ooo......|
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Start,
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// All items are centered
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// |...ooo...|
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Center,
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// Align items to the end
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// |......ooo|
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End,
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// Each item gets the same portion from the layout (disregards gap)
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// |.o..o..o.|
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Even,
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// Space between each item is the same (disregards gap)
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// |o...o...o|
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Between,
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};
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constexpr float AXISLAYOUT_DEFAULT_MIN_SCALE = 0.65f;
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constexpr int AXISLAYOUT_DEFAULT_PRIORITY = 0;
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/**
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* Options for controlling the behaviour of individual nodes in an AxisLayout
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* @example
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* auto node = CCNode::create();
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* // this node will have 10 units of spacing between it and the next one
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* node->setLayoutOptions(
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* AxisLayoutOptions::create()
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* ->setNextGap(10.f)
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* );
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* someNodeWithALayout->addChild(node);
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*/
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class GEODE_DLL AxisLayoutOptions : public LayoutOptions {
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protected:
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class Impl;
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std::unique_ptr<Impl> m_impl;
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AxisLayoutOptions();
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public:
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static AxisLayoutOptions* create();
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virtual ~AxisLayoutOptions();
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std::optional<bool> getAutoScale() const;
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// @note Use hasExplicitMaxScale to know if the default scale has been overwritten
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float getMaxScale() const;
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// @note Use hasExplicitMinScale to know if the default scale has been overwritten
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float getMinScale() const;
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bool hasExplicitMaxScale() const;
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bool hasExplicitMinScale() const;
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float getRelativeScale() const;
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std::optional<float> getLength() const;
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std::optional<float> getPrevGap() const;
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std::optional<float> getNextGap() const;
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bool getBreakLine() const;
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bool getSameLine() const;
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int getScalePriority() const;
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std::optional<AxisAlignment> getCrossAxisAlignment() const;
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/**
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* Set the maximum scale this node can be if it's contained in an
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* auto-scaled layout. Default is 1
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*/
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[[deprecated("Use AxisLayoutOptions::setScaleLimits")]]
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AxisLayoutOptions* setMaxScale(float scale);
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/**
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* Set the minimum scale this node can be if it's contained in an
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* auto-scaled layout. Default is AXISLAYOUT_DEFAULT_MIN_SCALE
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*/
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[[deprecated("Use AxisLayoutOptions::setScaleLimits")]]
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AxisLayoutOptions* setMinScale(float scale);
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/**
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* Set the limits to what the node can be scaled to. Passing `std::nullopt`
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* uses the parent layout's default min / max scales
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*/
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AxisLayoutOptions* setScaleLimits(std::optional<float> min, std::optional<float> max);
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/**
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* Set the relative scale of this node compared to other nodes if it's
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* contained in an auto-scaled layout. Default is 1
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*/
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AxisLayoutOptions* setRelativeScale(float scale);
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/**
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* Set auto-scaling for this node, overriding the layout's auto-scale
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* setting. If nullopt, the layout's auto-scale options will be used
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*/
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AxisLayoutOptions* setAutoScale(std::optional<bool> enabled);
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/**
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* Set an absolute length for this node. If nullopt, the length will be
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* dynamically calculated based on content size
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*/
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AxisLayoutOptions* setLength(std::optional<float> length);
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/**
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* Override the default gap in the layout between this node and the
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* previous one. If nullopt, the default gap of the layout will be used
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*/
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AxisLayoutOptions* setPrevGap(std::optional<float> gap);
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/**
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* Override the default gap in the layout between this node and the next
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* one. If nullopt, the default gap of the layout will be used
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*/
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AxisLayoutOptions* setNextGap(std::optional<float> gap);
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/**
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* If enabled, the node will always cause a growable axis layout to break
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* into a new line even if the current line could've fit the next node
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*/
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AxisLayoutOptions* setBreakLine(bool enable);
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/**
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* If enabled, the node will be forced to be on the same line as the
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* previous node even if doing this would overflow
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*/
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AxisLayoutOptions* setSameLine(bool enable);
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/**
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* Set the scale priority of this node. Nodes with higher priority will be
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* scaled down first before nodes with lower priority when an auto-scaled
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* layout attempts to fit its contents. Default is
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* AXISLAYOUT_DEFAULT_PRIORITY
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* @note For optimal performance, the priorities should all be close to
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* each other with no gaps
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*/
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AxisLayoutOptions* setScalePriority(int priority);
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/**
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* Override the cross axis alignment for this node in the layout
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*/
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AxisLayoutOptions* setCrossAxisAlignment(std::optional<AxisAlignment> alignment);
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};
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/**
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* A multi-purpose dynamic layout for arranging nodes along an axis. Can be
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* used to arrange nodes in a single line, a grid, or a flex layout. The
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* RowLayout and ColumnLayout classes function as simple thin wrappers over
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* AxisLayout. The positioning of individual nodes in the layout can be
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* further controlled using AxisLayoutOptions
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* @warning Calculating layouts can get increasingly expensive for large
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* amounts of child nodes being fit into a small space - while this should
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* never prove a real performance concern as most layouts only have a few
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* hundred children at the very most, be aware that you probably shouldn't
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* call CCNode::updateLayout every frame for a menu with thousands of children
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* @example
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* auto menu = CCMenu::create();
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* // The menu's children will be arranged horizontally, unless they overflow
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* // the content size width in which case a new line will be inserted and
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* // aligned to the left. The menu automatically will automatically grow in
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* // height to fit all the rows
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* menu->setLayout(
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* RowLayout::create()
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* ->setGap(10.f)
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* ->setGrowCrossAxis(true)
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* ->setAxisAlignment(AxisAlignment::Start)
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* );
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* menu->setContentSize({ 200.f, 0.f });
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* menu->addChild(...);
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* menu->updateLayout();
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*/
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class GEODE_DLL AxisLayout : public Layout {
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protected:
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class Impl;
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std::unique_ptr<Impl> m_impl;
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AxisLayout(Axis);
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public:
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/**
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* Create a new AxisLayout. Note that this class is not automatically
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* managed by default, so you must assign it to a CCNode or manually
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* manage the memory yourself. See the chainable setters on AxisLayout for
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* what options you can customize for the layout
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* @param axis The direction of the layout
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* @note For convenience, you can use the RowLayout and ColumnLayout
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* classes, which are just thin wrappers over AxisLayout
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* @returns Created AxisLayout
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*/
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static AxisLayout* create(Axis axis = Axis::Row);
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virtual ~AxisLayout();
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void apply(CCNode* on) override;
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CCSize getSizeHint(CCNode* on) const override;
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Axis getAxis() const;
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AxisAlignment getAxisAlignment() const;
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AxisAlignment getCrossAxisAlignment() const;
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AxisAlignment getCrossAxisLineAlignment() const;
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float getGap() const;
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bool getAxisReverse() const;
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bool getCrossAxisReverse() const;
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bool getAutoScale() const;
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bool getGrowCrossAxis() const;
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bool getCrossAxisOverflow() const;
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std::optional<float> getAutoGrowAxis() const;
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float getDefaultMinScale() const;
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float getDefaultMaxScale() const;
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AxisLayout* setAxis(Axis axis);
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/**
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* Sets where to align the target node's children on the main axis (X-axis
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* for Row, Y-axis for Column)
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*/
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AxisLayout* setAxisAlignment(AxisAlignment align);
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/**
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* Sets where to align the target node's children on the cross-axis (Y-axis
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* for Row, X-axis for Column)
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*/
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AxisLayout* setCrossAxisAlignment(AxisAlignment align);
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/**
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* Sets where to align the target node's children on the cross-axis for
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* each row (Y-axis for Row, X-axis for Column)
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*/
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AxisLayout* setCrossAxisLineAlignment(AxisAlignment align);
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/**
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* The spacing between the children of the node this layout applies to.
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* Measured as the space between their edges, not centres. Does not apply
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* on the main / cross axis if their alignment is AxisAlignment::Even
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*/
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AxisLayout* setGap(float gap);
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/**
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* Whether to reverse the direction of the children in this layout or not
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*/
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AxisLayout* setAxisReverse(bool reverse);
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/**
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* Whether to reverse the direction of the rows on the cross-axis or not
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*/
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AxisLayout* setCrossAxisReverse(bool reverse);
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/**
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* If enabled, then the layout may scale the target's children if they are
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* about to overflow. Assumes that all the childrens' intended scale is 1
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*/
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AxisLayout* setAutoScale(bool enable);
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/**
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* If true, if the main axis overflows extra nodes will be placed on new
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* rows/columns on the cross-axis
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*/
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AxisLayout* setGrowCrossAxis(bool expand);
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/**
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* If true, the cross-axis content size of the target node will be
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* automatically adjusted to fit the children
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*/
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AxisLayout* setCrossAxisOverflow(bool allow);
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/**
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* If not `std::nullopt`, then the axis will be automatically extended to
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* fit all items in a single row whose minimum length is the specified.
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* Useful for scrollable list layer contents
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*/
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AxisLayout* setAutoGrowAxis(std::optional<float> allowAndMinLength);
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/**
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* Set the default minimum/maximum scales for nodes in the layout
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*/
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AxisLayout* setDefaultScaleLimits(float min, float max);
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};
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/**
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* Simple layout for arranging nodes in a row (horizontal line)
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*/
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class GEODE_DLL RowLayout : public AxisLayout {
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protected:
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RowLayout();
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public:
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/**
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* Create a new RowLayout. See the chainable setters on RowLayout for
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* what options you can customize for the layout
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* @returns Created RowLayout
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*/
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static RowLayout* create();
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};
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/**
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* Simple layout for arranging nodes in a column (vertical line)
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*/
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class GEODE_DLL ColumnLayout : public AxisLayout {
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protected:
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ColumnLayout();
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public:
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/**
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* Create a new ColumnLayout. See the chainable setters on RowLayout for
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* what options you can customize for the layout
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* @returns Created ColumnLayout
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*/
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static ColumnLayout* create();
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};
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/**
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* The relative position of a node to its parent in an AnchorLayout
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*/
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enum class Anchor {
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Center,
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TopLeft,
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Top,
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TopRight,
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Right,
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BottomRight,
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Bottom,
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BottomLeft,
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Left,
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};
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/**
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* Options for customizing a node's position in an AnchorLayout
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*/
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class GEODE_DLL AnchorLayoutOptions : public LayoutOptions {
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protected:
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Anchor m_anchor = Anchor::Center;
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CCPoint m_offset = CCPointZero;
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public:
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static AnchorLayoutOptions* create();
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Anchor getAnchor() const;
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CCPoint getOffset() const;
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AnchorLayoutOptions* setAnchor(Anchor anchor);
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AnchorLayoutOptions* setOffset(CCPoint const& offset);
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};
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/**
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* A layout for positioning nodes at specific positions relative to their
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* parent's content size. See `Anchor` for available anchoring options. Useful
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* for example for popups, where a popup using `AnchorLayout` can be
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* automatically resized without needing to manually shuffle nodes around
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*/
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class GEODE_DLL AnchorLayout : public Layout {
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public:
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static AnchorLayout* create();
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void apply(CCNode* on) override;
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CCSize getSizeHint(CCNode* on) const override;
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/**
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* Get a position according to anchoring rules, with the same algorithm as
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* `AnchorLayout` uses to position its nodes
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* @param in The node whose content size to use as a reference
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* @param anchor The anchor position
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* @param offset Offset from the anchor
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* @returns A position in `in` for the anchored and offsetted location
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*/
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static CCPoint getAnchoredPosition(CCNode* in, Anchor anchor, CCPoint const& offset);
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};
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/**
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* A layout for automatically copying the content size of a node to other nodes.
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* Basically main use case is for FLAlertLayers (setting the size of the
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* background and `m_buttonMenu` based on `m_mainLayer`)
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*/
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class GEODE_DLL CopySizeLayout : public cocos2d::AnchorLayout {
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protected:
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cocos2d::CCArray* m_targets;
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public:
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static CopySizeLayout* create();
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virtual ~CopySizeLayout();
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/**
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* Add a target to be automatically resized. Any targets' layouts will
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* also be updated when this layout is updated
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*/
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CopySizeLayout* add(cocos2d::CCNode* target);
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/**
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* Remove a target from being automatically resized
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*/
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CopySizeLayout* remove(cocos2d::CCNode* target);
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void apply(cocos2d::CCNode* in) override;
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cocos2d::CCSize getSizeHint(cocos2d::CCNode* in) const override;
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};
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#pragma warning(pop)
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NS_CC_END
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