2016十二月29
REDM基础教程18-换肤的几种方式
MyTest下载–>
修改后的MyTest下载–>
编译MyTest时如果报错误:
.\..\Test\inc\Test.rc(57) : error RC2135 : file not found: I:\MyTest\Test\inc\qq.ico
把它改成
IDI_ICON1 ICON "inc\\qq.ico"
就OK了
1.增加换肤的菜单项
首先我们来打开MyRes\layout\xml\dui_exitmenu.xml,增加两项换肤菜单
<menu clrbg="pbgra(f8,fc,e9,ff)" clrselbg="pbgra(33,99,ff,ff)" clrText="pbgra(00,00,00,ff)" clrTextSel="pbgra(fe,fe,fe,ff)" alpha="0x80" bshadow="1" itemhei="24" textoffset="13" font="face:微软雅黑,size:13"><!--id必须不为0，,在1到65535之间,0在菜单TrackPopupMenu中表示fail--> <item text="官方支持(禁用态)" bdisable="1" /> <item text="多语言切换"><!--三个子项--> <item id="100" text="英语"/> <item id="101" text="俄语"/> <item id="102" text="中文"/> </item> <item text="换肤方式">//--------------------------------------------------> 增加两项换肤菜单 <item id="103" text="主题包换肤"/> item id="104" text="外部载入换肤"/> <item id="105" text="SetAttribute换肤"/> </item> <sep/> <item text="自定高度" height="40"/> <item id="200" text="退出"/> </menu>
以前面同样的方式，在MyTest\Test\inc\MainWnd.h中加入
enum QQMenuId
{
QQMENU_LANG_EN = 100,//
QQMENU_LANG_RN = 101,
QQMENU_LANG_CH = 102,
QQMENU_THEMESKIN = 103,
QQMENU_OUTSKIN = 104,
QQMENU_SETATTRSKIN = 105,
QQMENU_EXIT = 200,
};
};
在MyTest\Test\inc\MainWnd.cpp中加入
void CMainWnd::OnCommand(UINT uNotifyCode, int nID, HWND wndCtl)
{
switch (nID)
{
.....
case QQMENU_THEMESKIN:
{// 通过主题包换肤
}
break;
case QQMENU_OUTSKIN:
{// 通过外部加载图片
}
break;
case QQMENU_SETATTRSKIN:
{// 通过SetAttribut换肤
}
break;
default:
break;
}
}
2.主题包换肤
主题包可以是预先已被加载到内存中，也可以是从外部加载,参考代码在:
DMDemo\src\SkinWnd.cpp->CSkinWnd::OnChangeSkin1() DMDemo\src\SkinWnd.cpp->CSkinWnd::OnChangeSkin2()// 外部加载 或 QQDemo\src\SkinPreview.cpp-->SkinPreview::OnLButtonUp(UINT nFlags,CPoint pt)
关键函数:
DMSmartPtrT<IDMRes> pRes; g_pDMApp->GetDefRegObj((void**)&pRes, DMREG_Res);// 取得内部正在使用的Res对象 virtual DMCode LoadTheme(WPARAM wp, LPARAM lp);// 从外部加载新的主题包 virtual DMCode SetCurTheme(LPCWSTR lpszName, LPCWSTR lpszOldName=NULL);// 设置当前主题包
我们来增加主题包换肤示例，前面一节我们已增加了一个叫theme1的主题包，这里加入换肤代码
case QQMENU_THEMESKIN:
{// 通过主题包换肤
DMSmartPtrT<IDMRes> pRes;
g_pDMApp->GetDefRegObj((void**)&pRes, DMREG_Res);
if (pRes)
{
static wchar_t szOldThemeName[50]={0};
static bool bNew = false;
if (false == bNew)
{
pRes->SetCurTheme(L"theme1",szOldThemeName);// 返回原始theme的名字,即theme0
bNew = true;
}
else
{
pRes->SetCurTheme(szOldThemeName);
bNew = false;
}
}
}
break;
效果如下:
3.外部图片换肤
这里介绍几个关键函数:
DMApp中的GetSkin
IDMSkin* GetSkin(LPCWSTR lpszSkin);// 取得指定的skin对象
IDMSkin中的GetBitmap、SetBitmap
virtual DMCode GetBitmap(IDMBitmap** ppBitmap) = 0;///<取得bitmap virtual DMCode SetBitmap(LPBYTE pBuf,size_t szLen,LPCWSTR pszType) = 0; ///<通过内存设置bitmap
OK,一种换肤的方式出来了，取得原始的Skin，把Skin对应图片的内存换成新的,再刷新一下，就实现了换肤,具体可参考
QQDemo\src\SkinWnd.cpp—>DMCode CSkinWnd::OnOutSkin()
我们来尝试为关闭按钮换肤,它的name为closebtn,skin名为png:close
<Button name="closebtn" pos="-30,0,@30,@27" text="" clrnc="pbgra(00,00,00,ff)" clrbg="pbgra(dd,dd,dd,ff)" skin="png:close" />
这里加入换肤代码:
case QQMENU_OUTSKIN:
{// 通过外部加载图片
wchar_t szFileTitle[_MAX_FNAME] = {0};
wchar_t szFileName[_MAX_PATH] = {0};
OPENFILENAMEW ofn;
memset(&ofn, 0, sizeof(ofn));
ofn.lStructSize = sizeof(ofn);
ofn.lpstrFile = szFileName;
ofn.nMaxFile = _MAX_PATH;
ofn.lpstrDefExt = L"gif";
ofn.lpstrInitialDir = NULL;
ofn.lpstrFileTitle = (LPTSTR)szFileTitle;
ofn.nMaxFileTitle = _MAX_FNAME;
ofn.Flags = OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT | OFN_EXPLORER | OFN_ENABLEHOOK | OFN_ENABLESIZING| OFN_NOCHANGEDIR;
ofn.lpstrFilter = L"图像文件(*.bmp;*.jpg;*.png)\0*.bmp;*.jpg;*.png\0\0";
ofn.hwndOwner = m_hWnd;
if (::GetOpenFileNameW(&ofn))
{// todo.hgy413 note:GetOpenFileNameW点击后WM_LBUTTTONUP消息会发送给dui，所以不要随意只处理WM_LBUTTONUP
DMSmartPtrT<IDMSkin> pSkin = g_pDMApp->GetSkin(L"png:close");
if (pSkin)
{
DMSmartPtrT<IDMBitmap> pBitmap;
pSkin->GetBitmap(&pBitmap);
if (pBitmap)
{
DWORD dwSize = DM::GetFileSizeW(szFileName);
if (dwSize!=0)
{
DMBufT<byte>pBuf;pBuf.Allocate(dwSize);
DWORD dwRead = 0;
DM::GetFileBufW(szFileName,(void**)&pBuf,dwSize,dwRead);
pBitmap->LoadFromMemory(pBuf,dwSize,L"");
}
FindChildByNameT<DUIButton>(L"closebtn")->DM_Invalidate();
}
}
}
}
break;
效果如下:
代码解读:
1.从Skin池里取得类型为png名字为close的skin对象IDMSkin(你也可以直接写close，因为内部默认为png)
DMSmartPtrT<IDMSkin> pSkin = g_pDMApp->GetSkin(L"png:close");
2.取得skin对象对应的图元对象IDMBitmap
DMSmartPtrT<IDMBitmap> pBitmap; pSkin->GetBitmap(&pBitmap);
3.图元对象IDMBitmap重新加载内存（从外部传入的图片中加载）
DWORD dwSize = DM::GetFileSizeW(szFileName);
if (dwSize!=0)
{
DMBufT<byte>pBuf;pBuf.Allocate(dwSize);
DWORD dwRead = 0;
DM::GetFileBufW(szFileName,(void**)&pBuf,dwSize,dwRead);
pBitmap->LoadFromMemory(pBuf,dwSize,L"");
}
4.最后刷新自己的控件即可
FindChildByNameT<DUIButton>(L"closebtn")->DM_Invalidate();
注意，这种方式只是改了skin对应图元的内存，并不能改变skin的类型:http://hgy413.com/3506.html
如果要改变skin的类型，就只能把skin先移除，再添加了,对应DMApp的RemoveSkin和AddSkin
DMCode RemoveSkin(LPCWSTR lpszKey,LPCWSTR lpszName,bool bLoopFind = true); DMCode AddSkin(void *pBuf,size_t bufLen,LPCWSTR pszType, LPCWSTR lpszXml,LPCWSTR lpszPoolName=NULL);
在下面的方式里介绍了RemoveSkin和AddSkin的用法
4.SetAttribute换肤
前面提到过，SetAttribute是万能的，所有的属性都可以通过SetAttribute去动态设置，那么我们当然可以Add一个Skin,然后把某个控件SetAttribute过去，从而实现换肤
case QQMENU_SETATTRSKIN:
{// 通过SetAttribut换肤
wchar_t szFileTitle[_MAX_FNAME] = {0};
wchar_t szFileName[_MAX_PATH] = {0};
OPENFILENAMEW ofn;
memset(&ofn, 0, sizeof(ofn));
ofn.lStructSize = sizeof(ofn);
ofn.lpstrFile = szFileName;
ofn.nMaxFile = _MAX_PATH;
ofn.lpstrDefExt = L"gif";
ofn.lpstrInitialDir = NULL;
ofn.lpstrFileTitle = (LPTSTR)szFileTitle;
ofn.nMaxFileTitle = _MAX_FNAME;
ofn.Flags = OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT | OFN_EXPLORER | OFN_ENABLEHOOK | OFN_ENABLESIZING| OFN_NOCHANGEDIR;
ofn.lpstrFilter = L"图像文件(*.bmp;*.jpg;*.png)\0*.bmp;*.jpg;*.png\0\0";
ofn.hwndOwner = m_hWnd;
if (::GetOpenFileNameW(&ofn))
{// todo.hgy413 note:GetOpenFileNameW点击后WM_LBUTTTONUP消息会发送给dui，所以不要随意只处理WM_LBUTTONUP
DWORD dwSize = DM::GetFileSizeW(szFileName);
if (dwSize!=0)
{
DMBufT<byte>pBuf;pBuf.Allocate(dwSize);
DWORD dwRead = 0;
DM::GetFileBufW(szFileName,(void**)&pBuf,dwSize,dwRead);
DMSmartPtrT<IDMSkin> pSkin = g_pDMApp->GetSkin(L"todo");
if (pSkin)
{// 如果skin存在，则直接删除
#if 0// 如果skin存在，则直接改内存
DMSmartPtrT<IDMBitmap> pBitmap;
pSkin->GetBitmap(&pBitmap);
if (pBitmap)
{
pBitmap->LoadFromMemory(pBuf,dwSize,L"");
FindChildByNameT<DUIButton>(L"closebtn")->DM_Invalidate();
}
break;
#else
g_pDMApp->RemoveSkin(L"todo",L"ccskinpool");
#endif
}
// 如果skin不存在，则创建skin
CStringW strWXml = L"<imglist id=\"todo\" states=\"3\" />";// xml中不要配src了
g_pDMApp->AddSkin(pBuf,dwSize,L"png",strWXml,L"ccskinpool");// 加入到ccskinpool这个skin池
FindChildByNameT<DUIButton>(L"closebtn")->SetAttribute(L"skin",L"todo");// 强制把skin属性设置为todo的skin
}
}
}
break;
效果图和前面的一样，所以不再发了,上面我们创建了一个todo的skin,并放在ccskinpool池中（自动创建）,第二次加入时，先从ccskinpool池中移除todo，再加入，当然，最后是第二次加入时，直接改变skin对应的图片内存，如我上面#if0所示
SetAttribute的第一个参数skin含义参考：
文章作者：hgy413
本文地址：https://hgy413.com/3940.html
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