DC hook proc thunk management simplified.
This commit is contained in:
Ulrich Weigand
Alexandre Julliard
parent
974fd10c69
commit
f86aab84ba
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@ -157,8 +157,8 @@ file gdi.exe
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180 pascal16 SetDCState(word word) SetDCState16
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181 pascal16 RectInRegionOld(word ptr) RectInRegion16
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188 stub GetTextExtentEx
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190 pascal16 SetDCHook(word segptr long) THUNK_SetDCHook
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191 pascal GetDCHook(word ptr) THUNK_GetDCHook
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190 pascal16 SetDCHook(word segptr long) SetDCHook
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191 pascal GetDCHook(word ptr) GetDCHook
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192 pascal16 SetHookFlags(word word) SetHookFlags16
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193 pascal16 SetBoundsRect(word ptr word) SetBoundsRect16
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194 pascal16 GetBoundsRect(word ptr word) GetBoundsRect16
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@ -137,6 +137,9 @@ typedef struct
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BOOL vport2WorldValid; /* Is xformVport2World valid? */
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} WIN_DC_INFO;
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typedef BOOL16 (CALLBACK *DCHOOKPROC)(HDC16,WORD,DWORD,LPARAM);
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typedef struct tagDC
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{
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GDIOBJHDR header;
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@ -145,7 +148,8 @@ typedef struct tagDC
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void *physDev; /* Physical device (driver-specific) */
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INT saveLevel;
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DWORD dwHookData;
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FARPROC16 hookProc;
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FARPROC16 hookProc; /* the original SEGPTR ... */
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DCHOOKPROC hookThunk; /* ... and the thunk to call it */
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INT wndOrgX; /* Window origin */
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INT wndOrgY;
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@ -1 +1,2 @@
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Makefile
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dc.glue.c
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@ -24,6 +24,8 @@ C_SRCS = \
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region.c \
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text.c
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GLUE = dc.c
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all: $(MODULE).o
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@MAKE_RULES@
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@ -15,8 +15,8 @@ DECLARE_DEBUG_CHANNEL(region)
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#define UPDATE_DIRTY_DC(dc) \
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do { \
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if ((dc)->hookProc && !((dc)->w.flags & (DC_SAVED | DC_MEMORY))) \
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(dc)->hookProc( (dc)->hSelf, DCHC_INVALIDVISRGN, (dc)->dwHookData, 0 ); \
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if ((dc)->hookThunk && !((dc)->w.flags & (DC_SAVED | DC_MEMORY))) \
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(dc)->hookThunk( (dc)->hSelf, DCHC_INVALIDVISRGN, (dc)->dwHookData, 0 ); \
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} while(0)
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33
objects/dc.c
33
objects/dc.c
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@ -99,6 +99,7 @@ DC *DC_AllocDC( const DC_FUNCTIONS *funcs )
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dc->saveLevel = 0;
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dc->dwHookData = 0L;
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dc->hookProc = NULL;
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dc->hookThunk = NULL;
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dc->wndOrgX = 0;
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dc->wndOrgY = 0;
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dc->wndExtX = 1;
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@ -680,8 +681,8 @@ BOOL WINAPI DeleteDC( HDC hdc )
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TRACE("%04x\n", hdc );
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/* Call hook procedure to check whether is it OK to delete this DC */
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if ( dc->hookProc && !(dc->w.flags & (DC_SAVED | DC_MEMORY))
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&& dc->hookProc( hdc, DCHC_DELETEDC, dc->dwHookData, 0 ) == FALSE )
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if ( dc->hookThunk && !(dc->w.flags & (DC_SAVED | DC_MEMORY))
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&& dc->hookThunk( hdc, DCHC_DELETEDC, dc->dwHookData, 0 ) == FALSE )
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{
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GDI_HEAP_UNLOCK( hdc );
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return FALSE;
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@ -710,6 +711,7 @@ BOOL WINAPI DeleteDC( HDC hdc )
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if (dc->w.hVisRgn) DeleteObject( dc->w.hVisRgn );
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if (dc->w.hGCClipRgn) DeleteObject( dc->w.hGCClipRgn );
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if (dc->w.pAbortProc) THUNK_Free( (FARPROC)dc->w.pAbortProc );
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if (dc->hookThunk) THUNK_Free( (FARPROC)dc->hookThunk );
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PATH_DestroyGdiPath(&dc->w.path);
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return GDI_FreeObject( hdc );
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@ -1201,16 +1203,35 @@ BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
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/***********************************************************************
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* SetDCHook (GDI.190)
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*/
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/* ### start build ### */
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extern WORD CALLBACK GDI_CallTo16_word_wwll(FARPROC16,WORD,WORD,LONG,LONG);
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/* ### stop build ### */
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BOOL16 WINAPI SetDCHook( HDC16 hdc, FARPROC16 hookProc, DWORD dwHookData )
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{
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DC *dc = (DC *)GDI_GetObjPtr( hdc, DC_MAGIC );
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TRACE("hookProc %08x, default is %08x\n",
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(UINT)hookProc, (UINT)DCHook16 );
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if (!dc) return FALSE;
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/*
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* Note: We store the original SEGPTR 'hookProc' as we need to be
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* able to return it verbatim in GetDCHook,
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*
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* On the other hand, we still call THUNK_Alloc and store the
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* 32-bit thunk into another DC member, because THUNK_Alloc
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* recognizes the (typical) case that the 'hookProc' is indeed
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* the 16-bit API entry point of a built-in routine (e.g. DCHook16)
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*
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* We could perform that test every time the hook is about to
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* be called (or else we could live with the 32->16->32 detour),
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* but this way is the most efficient ...
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*/
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dc->hookProc = hookProc;
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dc->dwHookData = dwHookData;
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THUNK_Free( (FARPROC)dc->hookThunk );
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dc->hookThunk = (DCHOOKPROC)
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THUNK_Alloc( hookProc, (RELAY)GDI_CallTo16_word_wwll );
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GDI_HEAP_UNLOCK( hdc );
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return TRUE;
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}
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@ -27,7 +27,9 @@
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#include "region.h"
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#include "heap.h"
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#include "local.h"
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#include "module.h"
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#include "debugtools.h"
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#include "wine/winbase16.h"
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#include "wine/winuser16.h"
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DEFAULT_DEBUG_CHANNEL(dc)
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@ -71,6 +73,7 @@ static void DCE_DumpCache(void)
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*/
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DCE *DCE_AllocDCE( HWND hWnd, DCE_TYPE type )
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{
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FARPROC16 hookProc;
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DCE * dce;
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WND* wnd;
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@ -85,7 +88,8 @@ DCE *DCE_AllocDCE( HWND hWnd, DCE_TYPE type )
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/* store DCE handle in DC hook data field */
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SetDCHook( dce->hDC, (FARPROC16)DCHook16, (DWORD)dce );
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hookProc = (FARPROC16)NE_GetEntryPoint( GetModuleHandle16("USER"), 362 );
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SetDCHook( dce->hDC, hookProc, (DWORD)dce );
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dce->hwndCurrent = hWnd;
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dce->hClipRgn = 0;
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