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[WIN32SS][NTGDI] Refactoring PATH_WidenPath (#888)

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Preparation to support pen width.
Split IntGdiWidenPath function from PATH_WidenPath function.
IntGdiWidenPath is independent from DC.
CORE-2527, CORE-13534
This commit is contained in:
Katayama Hirofumi MZ 2018-10-28 05:13:08 +09:00 committed by GitHub
parent 7af2f717bc
commit 43c78d4b75
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 98 additions and 83 deletions
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179
win32ss/gdi/ntgdi/path.c
View file

@ -6,6 +6,7 @@
* PROGRAMMER: Copyright 1997, 1998 Martin Boehme
* 1999 Huw D M Davies
* 2005 Dmitry Timoshkov
* 2018 Katayama Hirofumi MZ
*/
#include <win32k.h>
@ -1719,93 +1720,22 @@ end:
#define round(x) ((int)((x)>0?(x)+0.5:(x)-0.5))
static
PPATH
FASTCALL
PATH_WidenPath(DC *dc)
PPATH FASTCALL
IntGdiWidenPath(PPATH pPath, UINT penWidth, UINT penStyle, FLOAT eMiterLimit)
{
INT i, j, numStrokes, numOldStrokes, penWidth, penWidthIn, penWidthOut, size, penStyle;
PPATH pPath, flat_path, pNewPath, *pStrokes = NULL, *pOldStrokes, pUpPath, pDownPath;
EXTLOGPEN *elp;
INT i, j, numStrokes, numOldStrokes, penWidthIn, penWidthOut;
PPATH flat_path, pNewPath, *pStrokes = NULL, *pOldStrokes, pUpPath, pDownPath;
BYTE *type;
DWORD obj_type, joint, endcap, penType;
PDC_ATTR pdcattr = dc->pdcattr;
pPath = PATH_LockPath(dc->dclevel.hPath);
if (!pPath)
{
EngSetLastError( ERROR_CAN_NOT_COMPLETE );
return NULL;
}
if (pPath->state != PATH_Closed)
{
DPRINT("PWP 1\n");
PATH_UnlockPath(pPath);
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
return NULL;
}
size = GreGetObject(pdcattr->hpen, 0, NULL);
if (!size)
{
DPRINT("PWP 2\n");
PATH_UnlockPath(pPath);
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
return FALSE;
}
elp = ExAllocatePoolWithTag(PagedPool, size, TAG_PATH);
if (elp == NULL)
{
DPRINT("PWP 3\n");
PATH_UnlockPath(pPath);
EngSetLastError(ERROR_OUTOFMEMORY);
return FALSE;
}
GreGetObject(pdcattr->hpen, size, elp);
obj_type = GDI_HANDLE_GET_TYPE(pdcattr->hpen);
if (obj_type == GDI_OBJECT_TYPE_PEN)
{
penStyle = ((LOGPEN*)elp)->lopnStyle;
}
else if (obj_type == GDI_OBJECT_TYPE_EXTPEN)
{
penStyle = elp->elpPenStyle;
}
else
{
DPRINT("PWP 4\n");
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
ExFreePoolWithTag(elp, TAG_PATH);
PATH_UnlockPath(pPath);
return FALSE;
}
penWidth = elp->elpWidth;
ExFreePoolWithTag(elp, TAG_PATH);
DWORD joint, endcap;
endcap = (PS_ENDCAP_MASK & penStyle);
joint = (PS_JOIN_MASK & penStyle);
penType = (PS_TYPE_MASK & penStyle);
/* The function cannot apply to cosmetic pens */
if (obj_type == GDI_OBJECT_TYPE_EXTPEN && penType == PS_COSMETIC)
{
DPRINT("PWP 5\n");
PATH_UnlockPath(pPath);
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
return FALSE;
}
if (!(flat_path = PATH_FlattenPath(pPath)))
{
PATH_UnlockPath(pPath);
return NULL;
DPRINT1("PATH_FlattenPath\n");
return NULL;
}
PATH_UnlockPath(pPath);
penWidthIn = penWidth / 2;
penWidthOut = penWidth / 2;
@ -1827,7 +1757,7 @@ PATH_WidenPath(DC *dc)
ExFreePoolWithTag(pStrokes, TAG_PATH);
PATH_UnlockPath(flat_path);
PATH_Delete(flat_path->BaseObject.hHmgr);
return FALSE;
return NULL;
}
switch(flat_path->pFlags[i])
{
@ -1849,7 +1779,7 @@ PATH_WidenPath(DC *dc)
{
PATH_UnlockPath(flat_path);
PATH_Delete(flat_path->BaseObject.hHmgr);
return FALSE;
return NULL;
}
RtlCopyMemory(pStrokes, pOldStrokes, numOldStrokes * sizeof(PPATH));
ExFreePoolWithTag(pOldStrokes, TAG_PATH); // Free old pointer.
@ -1858,7 +1788,7 @@ PATH_WidenPath(DC *dc)
{
PATH_UnlockPath(flat_path);
PATH_Delete(flat_path->BaseObject.hHmgr);
return FALSE;
return NULL;
}
pStrokes[numStrokes - 1] = ExAllocatePoolWithTag(PagedPool, sizeof(PATH), TAG_PATH);
if (!pStrokes[numStrokes - 1])
@ -1883,7 +1813,7 @@ PATH_WidenPath(DC *dc)
ExFreePoolWithTag(pStrokes, TAG_PATH);
PATH_UnlockPath(flat_path);
PATH_Delete(flat_path->BaseObject.hHmgr);
return FALSE;
return NULL;
}
}
@ -1988,7 +1918,7 @@ PATH_WidenPath(DC *dc)
alpha = atan2(yb - yo, xb - xo) - theta;
if (alpha > 0) alpha -= M_PI;
else alpha += M_PI;
if (_joint == PS_JOIN_MITER && dc->dclevel.laPath.eMiterLimit < fabs(1 / sin(alpha / 2)))
if (_joint == PS_JOIN_MITER && eMiterLimit < fabs(1 / sin(alpha / 2)))
{
_joint = PS_JOIN_BEVEL;
}
@ -2115,6 +2045,89 @@ PATH_WidenPath(DC *dc)
return pNewPath;
}
static
PPATH
FASTCALL
PATH_WidenPath(DC *dc)
{
INT size;
UINT penWidth, penStyle;
DWORD obj_type;
PPATH pPath, pNewPath;
LPEXTLOGPEN elp;
PDC_ATTR pdcattr = dc->pdcattr;
pPath = PATH_LockPath(dc->dclevel.hPath);
if (!pPath)
{
EngSetLastError( ERROR_CAN_NOT_COMPLETE );
return NULL;
}
if (pPath->state != PATH_Closed)
{
DPRINT("PWP 1\n");
PATH_UnlockPath(pPath);
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
return NULL;
}
size = GreGetObject(pdcattr->hpen, 0, NULL);
if (!size)
{
DPRINT("PWP 2\n");
PATH_UnlockPath(pPath);
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
return NULL;
}
elp = ExAllocatePoolWithTag(PagedPool, size, TAG_PATH);
if (elp == NULL)
{
DPRINT("PWP 3\n");
PATH_UnlockPath(pPath);
EngSetLastError(ERROR_OUTOFMEMORY);
return NULL;
}
GreGetObject(pdcattr->hpen, size, elp);
obj_type = GDI_HANDLE_GET_TYPE(pdcattr->hpen);
if (obj_type == GDI_OBJECT_TYPE_PEN)
{
penStyle = ((LOGPEN*)elp)->lopnStyle;
}
else if (obj_type == GDI_OBJECT_TYPE_EXTPEN)
{
penStyle = elp->elpPenStyle;
}
else
{
DPRINT("PWP 4\n");
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
ExFreePoolWithTag(elp, TAG_PATH);
PATH_UnlockPath(pPath);
return NULL;
}
penWidth = elp->elpWidth;
ExFreePoolWithTag(elp, TAG_PATH);
/* The function cannot apply to cosmetic pens */
if (obj_type == GDI_OBJECT_TYPE_EXTPEN &&
(PS_TYPE_MASK & penStyle) == PS_COSMETIC)
{
DPRINT("PWP 5\n");
PATH_UnlockPath(pPath);
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
return FALSE;
}
pNewPath = IntGdiWidenPath(pPath, penWidth, penStyle, dc->dclevel.laPath.eMiterLimit);
PATH_UnlockPath(pPath);
return pNewPath;
}
static inline INT int_from_fixed(FIXED f)
{
return (f.fract >= 0x8000) ? (f.value + 1) : f.value;

2
win32ss/gdi/ntgdi/path.h
View file

@ -109,3 +109,5 @@ VOID FASTCALL IntGetCurrentPositionEx(PDC dc, LPPOINT pt);
BOOL PATH_RestorePath( DC *, DC *);
BOOL PATH_SavePath( DC *, DC *);
BOOL IntGdiFillRgn(PDC pdc, PREGION prgn, PBRUSH pbrFill);
PPATH FASTCALL
IntGdiWidenPath(PPATH pPath, UINT penWidth, UINT penStyle, FLOAT eMiterLimit);