176 lines
2.9 KiB
C++
176 lines
2.9 KiB
C++
#include "..\easy2d.h"
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MouseNode::MouseNode() :
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m_bBlock(true),
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m_bTarget(false),
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m_ClickCallback([]() {}),
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m_OnMouseInCallback([]() {}),
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m_OnMouseOutCallback([]() {}),
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m_OnSelectCallback([]() {}),
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m_OnUnselectCallback([]() {})
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{
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}
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MouseNode::~MouseNode()
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{
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}
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bool MouseNode::_exec(bool active)
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{
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// 若 display 属性为 false，退出函数
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if (!m_bDisplay)
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{
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return false;
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}
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// 若画面已取得焦点，重置按钮属性并退出
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if (!active)
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{
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reset();
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return false;
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}
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// 判断节点当前的状态
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// 若节点未取得焦点，则重新判断节点状态
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if (!m_bTarget)
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{
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// 若鼠标位置在节点所在的矩形区域中
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if (_judge())
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{
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// 状态设为 MOUSEIN
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_setStatus(MOUSEIN);
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// 若此时按下鼠标左键
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if (MouseMsg::isOnLButtonDown())
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{
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m_bTarget = true; // 取得焦点标记
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_setStatus(SELECTED); // 状态设为 SELECTED
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}
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// 若节点阻塞鼠标消息，则取得画面焦点
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if (m_bBlock) return true;
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}
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else
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{
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reset(); // 恢复默认状态
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}
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}
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else
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{
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// 节点取得焦点时鼠标左键抬起
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if (MouseMsg::isOnLButtonUp())
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{
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// 若左键抬起时鼠标仍在节点内
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if (_judge())
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{
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m_ClickCallback(); // 执行回调函数
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}
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reset(); // 恢复默认状态
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}
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// 若节点阻塞鼠标消息，则取得画面焦点
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if (m_bBlock) return true;
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}
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return false;
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}
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void MouseNode::_onDraw()
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{
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// 节点是否显示
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if (!m_bDisplay)
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{
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return;
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}
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// 节点是否被选中
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if (m_eStatus == SELECTED)
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{
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_onSelected();
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}
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else
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{
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// 鼠标是否在节点上
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if (m_eStatus == MOUSEIN)
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{
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_onMouseIn();
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}
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else
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{
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_onNormal();
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}
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}
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}
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bool MouseNode::_judge()
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{
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return (MouseMsg::getMsg().x >= m_nX && MouseMsg::getMsg().x <= m_nX + m_nWidth) &&
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(MouseMsg::getMsg().y >= m_nY && MouseMsg::getMsg().y <= m_nY + m_nHeight);
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}
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void MouseNode::_setStatus(Status status)
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{
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if (m_eStatus != status)
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{
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// 退出某个状态的回调函数
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if (m_eStatus == MOUSEIN)
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{
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m_OnMouseOutCallback();
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}
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else if (m_eStatus == SELECTED)
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{
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m_OnUnselectCallback();
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}
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// 进入某个状态的回调函数
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if (status == MOUSEIN)
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{
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m_OnMouseInCallback();
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}
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else if (status == SELECTED)
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{
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m_OnSelectCallback();
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}
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m_eStatus = status;
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}
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}
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bool MouseNode::isMouseIn()
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{
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return m_eStatus == MOUSEIN || m_eStatus == SELECTED;
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}
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bool MouseNode::isSelected()
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{
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return m_eStatus == SELECTED;
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}
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void MouseNode::setClickedCallback(const CLICK_CALLBACK & callback)
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{
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m_ClickCallback = callback;
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}
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void MouseNode::setMouseInCallback(const CLICK_CALLBACK & callback)
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{
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m_OnMouseInCallback = callback;
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}
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void MouseNode::setMouseOutCallback(const CLICK_CALLBACK & callback)
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{
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m_OnMouseOutCallback = callback;
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}
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void MouseNode::setSelectCallback(const CLICK_CALLBACK & callback)
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{
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m_OnSelectCallback = callback;
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}
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void MouseNode::setUnselectCallback(const CLICK_CALLBACK & callback)
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{
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m_OnUnselectCallback = callback;
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}
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void MouseNode::reset()
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{
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m_bTarget = false; // 失去焦点标记
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_setStatus(NORMAL); // 恢复默认状态
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}
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void MouseNode::setBlock(bool block)
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{
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m_bBlock = block;
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}
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