文章目录
1.CEditUI控件
- 1.CEditUI控件
- 2.作者答疑
在duilib中，如何引入文本编辑框，实现采用的是CEditUI控件，它实现的是单行文本的输入，继承至CLabelUI控件，XML创建方式如下所示：
//使用范例
//属性列表
源代码如下所示：
class UILIB_API CEditUI : public CLabelUI
{
DECLARE_DUICONTROL(CEditUI)
friend class CEditWnd;
public:
CEditUI();
LPCTSTR GetClass() const;
LPVOID GetInterface(LPCTSTR pstrName);
UINT GetControlFlags() const;
void SetEnabled(bool bEnable = true);
void SetText(LPCTSTR pstrText);
void SetMaxChar(UINT uMax);
UINT GetMaxChar();
void SetReadOnly(bool bReadOnly);
bool IsReadOnly() const;
void SetPasswordMode(bool bPasswordMode);
bool IsPasswordMode() const;
void SetPasswordChar(TCHAR cPasswordChar);
TCHAR GetPasswordChar() const;
void SetNumberOnly(bool bNumberOnly);
bool IsNumberOnly() const;
int GetWindowStyls() const;
LPCTSTR GetNormalImage();
void SetNormalImage(LPCTSTR pStrImage);
LPCTSTR GetHotImage();
void SetHotImage(LPCTSTR pStrImage);
LPCTSTR GetFocusedImage();
void SetFocusedImage(LPCTSTR pStrImage);
LPCTSTR GetDisabledImage();
void SetDisabledImage(LPCTSTR pStrImage);
void SetNativeEditBkColor(DWORD dwBkColor);
DWORD GetNativeEditBkColor() const;
void SetNativeEditTextColor( LPCTSTR pStrColor );
DWORD GetNativeEditTextColor() const;
bool IsAutoSelAll();
void SetAutoSelAll(bool bAutoSelAll);
void SetSel(long nStartChar, long nEndChar);
void SetSelAll();
void SetReplaceSel(LPCTSTR lpszReplace);
void SetTipValue(LPCTSTR pStrTipValue);
LPCTSTR GetTipValue();
void SetTipValueColor(LPCTSTR pStrColor);
DWORD GetTipValueColor();
void SetPos(RECT rc, bool bNeedInvalidate = true);
void Move(SIZE szOffset, bool bNeedInvalidate = true);
void SetVisible(bool bVisible = true);
void SetInternVisible(bool bVisible = true);
SIZE EstimateSize(SIZE szAvailable);
void DoEvent(TEventUI& event);
void SetAttribute(LPCTSTR pstrName, LPCTSTR pstrValue);
void PaintStatusImage(HDC hDC);
void PaintText(HDC hDC);
protected:
CEditWnd* m_pWindow;
UINT m_uMaxChar;
bool m_bReadOnly;
bool m_bPasswordMode;
bool m_bAutoSelAll;
TCHAR m_cPasswordChar;
UINT m_uButtonState;
CDuiString m_sNormalImage;
CDuiString m_sHotImage;
CDuiString m_sFocusedImage;
CDuiString m_sDisabledImage;
CDuiString m_sTipValue;
DWORD m_dwTipValueColor;
DWORD m_dwEditbkColor;
DWORD m_dwEditTextColor;
int m_iWindowStyls;
};
使用win32编辑框的读者，阅读以上代码，会觉得很简单，只是一些常用属性的设置，接着在cpp文件里，有一个动态win32编辑窗口的实现，源代码如下：
class CEditWnd : public CWindowWnd
{
public:
CEditWnd();
void Init(CEditUI* pOwner);
RECT CalPos();
LPCTSTR GetWindowClassName() const;
LPCTSTR GetSuperClassName() const;
void OnFinalMessage(HWND hWnd);
LRESULT HandleMessage(UINT uMsg, WPARAM wParam, LPARAM lParam);
LRESULT OnKillFocus(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
LRESULT OnEditChanged(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
protected:
enum {
DEFAULT_TIMERID = 20,
};
CEditUI* m_pOwner;
HBRUSH m_hBkBrush;
bool m_bInit;
bool m_bDrawCaret;
};
LPCTSTR CEditWnd::GetWindowClassName() const
{
return _T("EditWnd");
}
LPCTSTR CEditWnd::GetSuperClassName() const
{
return WC_EDIT;//超类化，扩展系统提供的窗口类
}
LRESULT CEditWnd::OnKillFocus(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
LRESULT lRes = ::DefWindowProc(m_hWnd, uMsg, wParam, lParam);
//if ((HWND)wParam != m_pOwner->GetManager()->GetPaintWindow()) {
// ::SendMessage(m_pOwner->GetManager()->GetPaintWindow(), WM_KILLFOCUS, wParam, lParam);
//}
PostMessage(WM_CLOSE);
return lRes;
}
LRESULT CEditWnd::OnEditChanged(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
if( !m_bInit ) return 0;
if( m_pOwner == NULL ) return 0;
// Copy text back
int cchLen = ::GetWindowTextLength(m_hWnd) + 1;
LPTSTR pstr = static_cast(_alloca(cchLen * sizeof(TCHAR)));
ASSERT(pstr);
if( pstr == NULL ) return 0;
::GetWindowText(m_hWnd, pstr, cchLen);
m_pOwner->m_sText = pstr;
m_pOwner->GetManager()->SendNotify(m_pOwner, DUI_MSGTYPE_TEXTCHANGED);
if( m_pOwner->GetManager()->IsLayered() ) m_pOwner->Invalidate();
return 0;
}
编辑窗口在失去焦点时关闭，在文本改变时动态保存。
void CEditUI::DoEvent(TEventUI& event)
{
......
if( event.Type == UIEVENT_SETFOCUS && IsEnabled() )
{
if( m_pWindow ) return;
m_pWindow = new CEditWnd();//聚焦新建窗口
ASSERT(m_pWindow);
m_pWindow->Init(this);
Invalidate();
}
......
if( event.Type == UIEVENT_BUTTONDOWN || event.Type == UIEVENT_DBLCLICK || event.Type == UIEVENT_RBUTTONDOWN)
{
if( IsEnabled() ) {
GetManager()->ReleaseCapture();
if( IsFocused() && m_pWindow == NULL )
{
//左键按下时动态创建编辑窗口，并选择所有
m_pWindow = new CEditWnd();
ASSERT(m_pWindow);
m_pWindow->Init(this);
if( PtInRect(&m_rcItem, event.ptMouse) )
{
int nSize = GetWindowTextLength(*m_pWindow);
if( nSize == 0 ) nSize = 1;
Edit_SetSel(*m_pWindow, 0, nSize);
}
}
else if( m_pWindow != NULL )
{
if (!m_bAutoSelAll) {
POINT pt = event.ptMouse;
pt.x -= m_rcItem.left + m_rcTextPadding.left;
pt.y -= m_rcItem.top + m_rcTextPadding.top;
Edit_SetSel(*m_pWindow, 0, 0);//取消选择
//编辑框鼠标点击事件
::SendMessage(*m_pWindow, WM_LBUTTONDOWN, event.wParam, MAKELPARAM(pt.x, pt.y));
}
}
}
return;
}
if( event.Type == UIEVENT_MOUSEMOVE )
{
return;
}
if( event.Type == UIEVENT_BUTTONUP )
{
return;
}
if( event.Type == UIEVENT_CONTEXTMENU )
{
return;
}
if( event.Type == UIEVENT_MOUSEENTER )
{
if( ::PtInRect(&m_rcItem, event.ptMouse ) ) {
if( IsEnabled() ) {
if( (m_uButtonState & UISTATE_HOT) == 0 ) {
m_uButtonState |= UISTATE_HOT;
Invalidate();
}
}
}
}
if( event.Type == UIEVENT_MOUSELEAVE )
{
if( IsEnabled() ) {
m_uButtonState &= ~UISTATE_HOT;
Invalidate();
}
return;
}
CLabelUI::DoEvent(event);
}
最后一部分是绘制文本，代码如下：
void CEditUI::PaintText(HDC hDC)
{
DWORD mCurTextColor = m_dwTextColor;
if( m_dwTextColor == 0 ) mCurTextColor = m_dwTextColor = m_pManager->GetDefaultFontColor();
if( m_dwDisabledTextColor == 0 ) m_dwDisabledTextColor = m_pManager->GetDefaultDisabledColor();
CDuiString sDrawText = GetText();
CDuiString sTipValue = GetTipValue();
if(sDrawText == sTipValue || sDrawText == _T("")) {
mCurTextColor = m_dwTipValueColor;
sDrawText = sTipValue;
}
else {
CDuiString sTemp = sDrawText;
if( m_bPasswordMode ) {//密码模式
sDrawText.Empty();
LPCTSTR pStr = sTemp.GetData();
while( *pStr != _T('\0') ) {
sDrawText += m_cPasswordChar;
pStr = ::CharNext(pStr);
}
}
}
RECT rc = m_rcItem;
rc.left += m_rcTextPadding.left;
rc.right -= m_rcTextPadding.right;
rc.top += m_rcTextPadding.top;
rc.bottom -= m_rcTextPadding.bottom;
if( IsEnabled() ) {
CRenderEngine::DrawText(hDC, m_pManager, rc, sDrawText, mCurTextColor, \
m_iFont, DT_SINGLELINE | m_uTextStyle);
}
else {
CRenderEngine::DrawText(hDC, m_pManager, rc, sDrawText, m_dwDisabledTextColor, \
m_iFont, DT_SINGLELINE | m_uTextStyle);
}
}
如有疑问，请留言。
