本文主要是介绍duilib最简单的自定义列表,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
网上写的关于自定义列表的例子都过于复杂,对初学者不太友好。这里举了一个最简单的例子。
主界面的listdemo.xml内容如下:
<?xml version="1.0" encoding="UTF-8" ?>
<Window size="500,500" caption="0,0,0,30"><Default name="VScrollBar" value="button1normalimage="file='scrollbar.png' source='0,0,16,16'" button1hotimage="file='scrollbar.png' source='16,0,32,16,16'" button1pushedimage="file='scrollbar.png' source='32,0,48,16'" button2normalimage="file='scrollbar.png' source='0,32,16,48'" button2hotimage="file='scrollbar.png' source='16,32,32,48'" button2pushedimage="file='scrollbar.png' source='32,32,48,48'" thumbnormalimage="file='scrollbar.png' source='0,48,16,64' corner='0,2,0,2'" thumbhotimage="file='scrollbar.png' source='16,48,32,64' corner='0,2,0,2'" thumbpushedimage="file='scrollbar.png' source='32,48,48,64' corner='0,2,0,2'" bknormalimage="file='scrollbar.png' source='0,16,16,32'"" /><VerticalLayout bkcolor="#FFFFFFE0"><VerticalLayout height="50"><HorizontalLayout><HorizontalLayout></HorizontalLayout><Label align="center" text="列表测试Demo"/><HorizontalLayout></HorizontalLayout><Button name="btnstart" text="开始" bkcolor="#FFF5DEB3" padding="8,8,8,8" borderround="5,5"/><HorizontalLayout></HorizontalLayout> </HorizontalLayout></VerticalLayout><VerticalLayout > <!--list开始--><MyList2 name="list1" header="hidden" itemshowhtml="true" vscrollbar="true"></MyList2></VerticalLayout></VerticalLayout>
</Window>
其中MyList2是自定义的列表标签。
列表项的friend_list_item.xml文件内容如下:
<?xml version="1.0" encoding="UTF-8"?>
<Window><ListContainerElement height="32"><VerticalLayout height="32"><HorizontalLayout><VerticalLayout name="logo_container" width="50"><Button name="logo" width="32" height="32" /></VerticalLayout><VerticalLayout ><HorizontalLayout><Label name="nickname" text="default" bordersize="0" width="120" textcolor="#FF000000" disabledtextcolor="#FF808080" /><Label name="description" bordersize="0" textcolor="#FF808080" /></HorizontalLayout></VerticalLayout></HorizontalLayout></VerticalLayout></ListContainerElement>
</Window>
MyList2类的代码如下:
UIMyList2.h
#ifndef UIMYLIST2_H
#define UIMYLIST2_H
#include "../../../duilib/DuiLib/UIlib.h"namespace DuiLib
{struct MyItem2{//头像CDuiString strPic;//名称CDuiString strNiceName;//描述CDuiString strDes;};class CMyListUI2 :public CListUI{public:enum { SCROLL_TIMERID = 10 };CMyListUI2(CPaintManagerUI& paint_manager);~CMyListUI2();bool Add(CControlUI* pControl);bool AddAt(CControlUI* pControl, int iIndex);bool Remove(CControlUI* pControl, bool bDoNotDestroy = false);bool RemoveAt(int iIndex, bool bDoNotDestroy);void RemoveAll();//定制方法void AddItem(MyItem2& itemdata);private:CPaintManagerUI& paint_manager_;CDialogBuilder m_dlgBuilder;};
}#endif // UIMYLIST2_H
UIMyList2.cpp
#include "UIMyList2.h"namespace DuiLib{CMyListUI2::CMyListUI2(CPaintManagerUI& paint_manager):paint_manager_(paint_manager){SetItemShowHtml(true);}CMyListUI2::~CMyListUI2(){}bool CMyListUI2::Add(CControlUI* pControl){if (!pControl)return false;if (_tcsicmp(pControl->GetClass(), DUI_CTR_LISTCONTAINERELEMENT) != 0)return false;return CListUI::Add(pControl);}bool CMyListUI2::AddAt(CControlUI* pControl, int iIndex){if (!pControl)return false;if (_tcsicmp(pControl->GetClass(), DUI_CTR_LISTCONTAINERELEMENT) != 0)return false;return CListUI::AddAt(pControl, iIndex);}bool CMyListUI2::Remove(CControlUI* pControl, bool bDoNotDestroy){if (!pControl)return false;if (_tcsicmp(pControl->GetClass(), DUI_CTR_LISTCONTAINERELEMENT) != 0)return false;return CListUI::Remove(pControl, bDoNotDestroy);}bool CMyListUI2::RemoveAt(int iIndex, bool bDoNotDestroy){CControlUI* pControl = GetItemAt(iIndex);if (!pControl)return false;if (_tcsicmp(pControl->GetClass(), DUI_CTR_LISTCONTAINERELEMENT) != 0)return false;return CListUI::RemoveAt(iIndex, bDoNotDestroy);}void CMyListUI2::RemoveAll(){CListUI::RemoveAll();}void CMyListUI2::AddItem(MyItem2& itemdata){CListContainerElementUI* pItem = NULL;if (!m_dlgBuilder.GetMarkup()->IsValid()){pItem = static_cast<CListContainerElementUI*>(m_dlgBuilder.Create(_T("friend_list_item.xml"), (UINT)0, NULL, &paint_manager_));}else {pItem = static_cast<CListContainerElementUI*>(m_dlgBuilder.Create((UINT)0, &paint_manager_));}if (!pItem) return;this->Add(pItem);//设置头像CButtonUI *pBtn = static_cast<CButtonUI*>(pItem->FindSubControl(_T("logo")));if (pBtn){pBtn->SetNormalImage(itemdata.strPic);}//设置昵称CLabelUI * pNickName = static_cast<CLabelUI*>(pItem->FindSubControl(_T("nickname")));if (pNickName){pNickName->SetText(itemdata.strNiceName);}//设置描述CLabelUI * pDes = static_cast<CLabelUI*>(pItem->FindSubControl(_T("description")));if (pDes){pDes->SetText(itemdata.strDes);}}
}
main函数主框架的的代码如下:
#pragma once#include "../../../duilib/DuiLib/UIlib.h"
//#include <Windows.h>#pragma comment(lib,"./bin/duilib_d.lib")#include "UIMyList2.h"using namespace DuiLib;class CDuiFrameWnd : public WindowImplBase
{
public:virtual LPCTSTR GetWindowClassName() const { return _T("listDemo1"); }virtual CDuiString GetSkinFile() { return _T("listdemo.xml"); }virtual CDuiString GetSkinFolder() { return _T(""); }//virtual LRESULT HandleMessage(UINT uMsg, WPARAM wParam, LPARAM lParam)//{// return WindowImplBase::HandleMessage(uMsg, wParam, lParam);//}virtual void Notify(TNotifyUI& msg){if (msg.sType == DUI_MSGTYPE_CLICK && msg.pSender->GetName() == _T("btnstart")){//点按钮往列表插入数据CMyListUI2* pMyList2 = static_cast<CMyListUI2*>(m_PaintManager.FindControl(_T("list1")));if (pMyList2){MyItem2 itemdata1;itemdata1.strPic = _T("default.png");itemdata1.strNiceName = _T("小明");itemdata1.strDes = _T("我就是我,是颜色不一样的焰火1");pMyList2->AddItem(itemdata1);MyItem2 itemdata2;itemdata2.strPic = _T("default.png");itemdata2.strNiceName = _T("小王");itemdata2.strDes = _T("我就是我,是颜色不一样的焰火2");pMyList2->AddItem(itemdata2);MyItem2 itemdata3;itemdata3.strPic = _T("default.png");itemdata3.strNiceName = _T("小张");itemdata3.strDes = _T("我就是我,是颜色不一样的焰火3");pMyList2->AddItem(itemdata3);}return;}}virtual CControlUI* CreateControl(LPCTSTR pstrClass){if (_tcsicmp(pstrClass, _T("MyList2")) == 0){return new CMyListUI2(m_PaintManager);}elsereturn NULL;}
};int APIENTRY _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
{CPaintManagerUI::SetInstance(hInstance);CDuiFrameWnd duiFrame;duiFrame.Create(NULL, _T("DUIWnd"), UI_WNDSTYLE_FRAME, WS_EX_WINDOWEDGE);duiFrame.CenterWindow();duiFrame.ShowModal();return 0;
}
CMyList2的代码已经非常简单了,重写基类的方法实现也很简单。基本上一看就懂。其实本质就是往list中添加子项为CListContainerElementUI控件,该控件包含所有其他控件组成了列表的一项。
个人认为最重要的几个方法是,
CDuiFrameWnd 的CreateControl方法(duilib识别到未知标签后会调用该方法,让程序员返回自定义标签类的实例)以及
CListContainerElementUI的FindSubControl(通过name属性查找子控件)、
CDialogBuilder 的Create方法使用(通过xml文件创建控件)
不懂请留言
程序运行结果如下:
点击开始按钮向列表添加数据
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