351 lines
10 KiB
C++
351 lines
10 KiB
C++
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//
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// File: dlgcset.cpp
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//
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// This file contains the code that implements CNativeFont class.
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//
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// history:
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// 7-21-97 created;
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//
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#include "ctlspriv.h"
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#include "ccontrol.h"
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#define THISCLASS CNativeFont
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#define SUPERCLASS CControl
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typedef enum
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{
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FAS_NOTINITIALIZED = 0,
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FAS_DISABLED,
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FAS_ENABLED,
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} FASTATUS;
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class CNativeFont : public CControl
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{
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public:
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//Function Memebers
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virtual LRESULT v_WndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
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static LRESULT NativeFontWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
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protected:
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CNativeFont();
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//Function Members
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virtual void v_OnPaint(HDC hdc) ;
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virtual LRESULT v_OnCreate();
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virtual void v_OnSize(int x, int y) {};
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virtual LRESULT v_OnCommand(WPARAM wParam, LPARAM lParam);
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virtual LRESULT v_OnNotify(WPARAM wParam, LPARAM lParam);
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virtual DWORD v_OnStyleChanged(WPARAM wParam, LPARAM lParam) { return 0; };
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HRESULT _GetNativeDialogFont(HWND hDlg);
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static HRESULT _GetFontAssocStatus(FASTATUS *uiAssoced);
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static BOOL _SetFontEnumProc(HWND hwnd, LPARAM lparam);
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static LRESULT _SubclassDlgProc(HWND hdlg, UINT uMsg, WPARAM wParam, LPARAM lParam, WPARAM uIdSubclass, ULONG_PTR dwRefData);
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HFONT m_hfontOrg;
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HFONT m_hfontNative;
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HFONT m_hfontDelete;
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typedef struct {
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HFONT hfontSet;
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DWORD dwStyle;
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} NFENUMCHILDDATA;
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static FASTATUS _s_uiFontAssocStatus;
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};
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// static variable initialization
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FASTATUS CNativeFont::_s_uiFontAssocStatus = FAS_NOTINITIALIZED;
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// reg keys
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static const TCHAR s_szRegFASettings[] = TEXT("System\\CurrentControlSet\\Control\\FontAssoc\\Associated Charset");
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CNativeFont::CNativeFont(void)
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{
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m_hfontOrg = NULL;
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m_hfontNative = NULL;
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m_hfontDelete = NULL;
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}
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LRESULT THISCLASS::NativeFontWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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CNativeFont *pn = (CNativeFont *)GetWindowLongPtr(hwnd, 0);
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if (uMsg == WM_CREATE) {
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ASSERT(!pn);
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pn = new CNativeFont();
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if (!pn)
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return 0L;
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}
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if (pn) {
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return pn->v_WndProc(hwnd, uMsg, wParam, lParam);
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}
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return DefWindowProc(hwnd, uMsg, wParam, lParam);
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}
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void THISCLASS::v_OnPaint(HDC hdc)
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{
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return;
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}
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LRESULT THISCLASS::v_OnCommand(WPARAM wParam, LPARAM lParam)
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{
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// forward to parent (do we really need this?)
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return SendMessage(ci.hwndParent, WM_COMMAND, wParam, lParam);
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}
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LRESULT THISCLASS::v_OnNotify(WPARAM wParam, LPARAM lParam)
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{
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// forward to parent
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LPNMHDR lpNmhdr = (LPNMHDR)lParam;
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return SendNotifyEx(ci.hwndParent, (HWND) -1,
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lpNmhdr->code, lpNmhdr, ci.bUnicode);
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}
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LRESULT THISCLASS::v_OnCreate()
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{
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return TRUE;
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}
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BOOL THISCLASS::_SetFontEnumProc(HWND hwnd, LPARAM lparam)
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{
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NFENUMCHILDDATA * pdt = (NFENUMCHILDDATA *)lparam;
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BOOL bMatch = FALSE;
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if (pdt && pdt->hfontSet)
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{
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if (pdt->dwStyle & NFS_ALL)
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{
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bMatch = TRUE;
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}
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else
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{
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TCHAR szClass[32];
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GetClassName(hwnd, szClass, ARRAYSIZE(szClass));
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if (pdt->dwStyle & NFS_EDIT)
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{
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bMatch |= (lstrcmpi(TEXT("Edit"), szClass) == 0);
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bMatch |= (lstrcmpi(TEXT("RichEdit20A"), szClass) == 0);
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bMatch |= (lstrcmpi(TEXT("RichEdit20W"), szClass) == 0);
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}
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if (pdt->dwStyle & NFS_STATIC)
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bMatch |= (lstrcmpi(TEXT("Static"), szClass) == 0);
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if (pdt->dwStyle & NFS_BUTTON)
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bMatch |= (lstrcmpi(TEXT("Button"), szClass) == 0);
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if (pdt->dwStyle & NFS_LISTCOMBO)
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{
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bMatch |= (lstrcmpi(TEXT("ListBox"), szClass) == 0);
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bMatch |= (lstrcmpi(TEXT("ComboBox"), szClass) == 0);
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bMatch |= (lstrcmpi(TEXT("ComboBoxEx32"), szClass) == 0);
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bMatch |= (lstrcmpi(WC_LISTVIEW, szClass) == 0);
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}
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}
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if (bMatch)
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SendMessage(hwnd, WM_SETFONT, (WPARAM)pdt->hfontSet, MAKELPARAM(FALSE, 0));
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return TRUE;
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}
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else
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return FALSE;
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}
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LRESULT THISCLASS::_SubclassDlgProc(HWND hdlg, UINT uMsg, WPARAM wParam, LPARAM lParam, WPARAM uIdSubclass, ULONG_PTR dwRefData)
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{
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LRESULT lret = 0;
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CNativeFont * pnf = (CNativeFont *)dwRefData;
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if (pnf)
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{
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switch (uMsg)
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{
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case WM_INITDIALOG:
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// we enumerate its children so they get font
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// in native charset selected if necessary
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//
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if (S_OK == pnf->_GetNativeDialogFont(hdlg))
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{
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// S_OK means we have different charset from
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// the default of the platform on which we're
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// running.
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NFENUMCHILDDATA dt;
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dt.hfontSet = pnf->m_hfontNative;
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dt.dwStyle = pnf->ci.style;
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EnumChildWindows(hdlg, pnf->_SetFontEnumProc, (LPARAM)&dt);
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}
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// we no longer need subclass procedure.
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// assumes no one has subclassed this dialog by now
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break;
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case WM_DESTROY:
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// if we've created a font, we have to clean it up.
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if (pnf->m_hfontDelete)
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{
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NFENUMCHILDDATA dt;
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dt.hfontSet = pnf->m_hfontOrg;
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dt.dwStyle = pnf->ci.style;
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// just in case anyone is still alive
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EnumChildWindows(hdlg, pnf->_SetFontEnumProc, (LPARAM)&dt);
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DeleteObject(pnf->m_hfontDelete);
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pnf->m_hfontDelete = NULL;
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}
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RemoveWindowSubclass(hdlg, pnf->_SubclassDlgProc, 0);
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break;
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}
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lret = DefSubclassProc(hdlg, uMsg, wParam, lParam);
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}
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return lret;
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}
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LRESULT THISCLASS::v_WndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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HWND hdlg;
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switch (uMsg)
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{
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case WM_CREATE:
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// subclass the parent dialog just to get notified for WM_INITDIALOG
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hdlg = GetParent(hwnd);
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if (hdlg)
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{
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// if we had an error just do nothing, we have to succeed in creating
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// window anyway otherwise dialog fails.
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SetWindowSubclass(hdlg, _SubclassDlgProc, 0, (ULONG_PTR)this);
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}
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break;
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}
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return SUPERCLASS::v_WndProc(hwnd, uMsg, wParam, lParam);
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}
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// _GetNativeDialogFont
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//
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// Retreive font handle in platform native character set
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//
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// returns S_OK if the given dialogbox requires setting font
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// in native charset
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// S_FALSE if the given dialogbox already has native
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// charset.
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// E_FAIL if anyother error occurs
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//
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HRESULT THISCLASS::_GetNativeDialogFont(HWND hDlg)
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{
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HRESULT hres = E_FAIL;
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if(!m_hfontNative)
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{
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HFONT hfontNative, hfont = GetWindowFont(hDlg);
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LOGFONT lf, lfNative;
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FASTATUS uiFAStat = FAS_NOTINITIALIZED;
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GetObject(hfont, sizeof(LOGFONT), &lf);
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SystemParametersInfo(SPI_GETICONTITLELOGFONT, sizeof(LOGFONT), &lfNative, 0);
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// there are two cases we don't want to create/set font
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// for the platform native character set.
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// 1) we already have matching character set
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// 2) the platform has 'font assoc' enabled or 'font link'
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// and our client wants to use it instead of
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// setting the right character set. (NFS_USEFONTASSOC)
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// this solution sometimes provides better
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// appearance (thought it is broken in its
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// font metrics) because it would use
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// 'western font' as is.
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if (ci.style & NFS_USEFONTASSOC)
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{
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_GetFontAssocStatus(&uiFAStat);
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}
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if ( uiFAStat == FAS_ENABLED
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|| lfNative.lfCharSet == lf.lfCharSet)
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{
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m_hfontOrg = m_hfontNative = hfont;
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}
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else
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{
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// we have non-native charset for the platform
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// Save away the original font first.
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m_hfontOrg = hfont;
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// Use the height of original dialog font
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lfNative.lfHeight = lf.lfHeight;
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if (!(hfontNative=CreateFontIndirect(&lfNative)))
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{
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hfontNative = hfont;
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}
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// save it away so we can delete it later
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if (hfontNative != hfont)
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m_hfontDelete = hfont;
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// set this variable to avoid calling createfont twice
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// if we get called again.
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m_hfontNative = hfontNative;
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}
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}
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return hres = (m_hfontNative == m_hfontOrg ? S_FALSE : S_OK);
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}
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//
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// _GetFontAssocStatus
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//
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// synopsis: check to see if the platform has "Font Association"
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// enabled or 'Font Link' capability
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//
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HRESULT THISCLASS::_GetFontAssocStatus(FASTATUS *puiAssoced)
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{
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HRESULT hr = S_OK;
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ASSERT(puiAssoced);
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// I assume the setting won't change without rebooting
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// the system
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//
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if (FAS_NOTINITIALIZED == _s_uiFontAssocStatus)
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{
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// NT5 has fontlink functionality
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_s_uiFontAssocStatus = FAS_ENABLED;
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}
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*puiAssoced = _s_uiFontAssocStatus;
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return hr;
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}
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extern "C" {
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BOOL InitNativeFontCtl(HINSTANCE hinst)
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{
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WNDCLASS wc;
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wc.lpfnWndProc = THISCLASS::NativeFontWndProc;
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wc.hCursor = LoadCursor(NULL, IDC_ARROW);
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wc.hIcon = NULL;
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wc.lpszMenuName = NULL;
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wc.hInstance = hinst;
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wc.lpszClassName = WC_NATIVEFONTCTL;
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wc.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1); // NULL;
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wc.style = CS_GLOBALCLASS;
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wc.cbWndExtra = sizeof(LPVOID);
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wc.cbClsExtra = 0;
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if (!RegisterClass(&wc) && !GetClassInfo(hinst, WC_NATIVEFONTCTL, &wc))
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return FALSE;
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return TRUE;
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}
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};
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