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reactos/win32ss/gdi/ntgdi/path.c
Serge Gautherie 8efde69a25
[WIN32K:NTGDI] PATH_PathToRegion(): Update documentation (#4941) 
Addendum to 215e0d9 (r64177).
2022-12-22 01:27:51 +01:00

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/*
* PROJECT: ReactOS win32 kernel mode subsystem
* LICENSE: GPL - See COPYING in the top level directory
* FILE: win32ss/gdi/ntgdi/path.c
* PURPOSE: Graphics paths (BeginPath, EndPath etc.)
* PROGRAMMER: Copyright 1997, 1998 Martin Boehme
* 1999 Huw D M Davies
* 2005 Dmitry Timoshkov
* 2018 Katayama Hirofumi MZ
*/
#include <win32k.h>
#include <suppress.h>
DBG_DEFAULT_CHANNEL(GdiPath);
#ifdef _MSC_VER
#pragma warning(disable:4244)
#endif
#define NUM_ENTRIES_INITIAL 16 /* Initial size of points / flags arrays */
#define GROW_FACTOR_NUMER 2 /* Numerator of grow factor for the array */
#define GROW_FACTOR_DENOM 1 /* Denominator of grow factor */
#if DBG
static int PathCount = 0;
#endif
/***********************************************************************
* Internal functions
*/
PPATH FASTCALL
PATH_CreatePath(int count)
{
PPATH pPath = PATH_AllocPathWithHandle();
if (!pPath)
{
EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
return NULL;
}
TRACE("CreatePath p 0x%p\n", pPath);
// Path handles are shared. Also due to recursion with in the same thread.
GDIOBJ_vUnlockObject((POBJ)pPath); // Unlock
pPath = PATH_LockPath(pPath->BaseObject.hHmgr); // Share Lock.
/* Make sure that path is empty */
PATH_EmptyPath(pPath);
count = max( NUM_ENTRIES_INITIAL, count );
pPath->numEntriesAllocated = count;
pPath->pPoints = (POINT *)ExAllocatePoolWithTag(PagedPool, count * sizeof(POINT), TAG_PATH);
RtlZeroMemory( pPath->pPoints, count * sizeof(POINT));
pPath->pFlags = (BYTE *)ExAllocatePoolWithTag(PagedPool, count * sizeof(BYTE), TAG_PATH);
RtlZeroMemory( pPath->pFlags, count * sizeof(BYTE));
/* Initialize variables for new path */
pPath->numEntriesUsed = 0;
pPath->newStroke = TRUE;
pPath->state = PATH_Open;
pPath->pos.x = pPath->pos.y = 0;
#if DBG
PathCount++;
TRACE("Create Path %d\n",PathCount);
#endif
return pPath;
}
/* PATH_DestroyGdiPath
*
* Destroys a GdiPath structure (frees the memory in the arrays).
*/
VOID
FASTCALL
PATH_DestroyGdiPath(PPATH pPath)
{
ASSERT(pPath != NULL);
if (pPath->pPoints) ExFreePoolWithTag(pPath->pPoints, TAG_PATH);
if (pPath->pFlags) ExFreePoolWithTag(pPath->pFlags, TAG_PATH);
}
BOOL
FASTCALL
PATH_Delete(HPATH hPath)
{
PPATH pPath;
if (!hPath) return FALSE;
pPath = PATH_LockPath(hPath);
if (!pPath) return FALSE;
PATH_DestroyGdiPath(pPath);
GDIOBJ_vDeleteObject(&pPath->BaseObject);
#if DBG
PathCount--;
TRACE("Delete Path %d\n",PathCount);
#endif
return TRUE;
}
VOID
FASTCALL
IntGdiCloseFigure(PPATH pPath)
{
ASSERT(pPath->state == PATH_Open);
// FIXME: Shouldn't we draw a line to the beginning of the figure?
// Set PT_CLOSEFIGURE on the last entry and start a new stroke
if (pPath->numEntriesUsed)
{
pPath->pFlags[pPath->numEntriesUsed - 1] |= PT_CLOSEFIGURE;
pPath->newStroke = TRUE;
}
}
/* MSDN: This fails if the device coordinates exceed 27 bits, or if the converted
logical coordinates exceed 32 bits. */
BOOL
FASTCALL
GdiPathDPtoLP(
PDC pdc,
PPOINT ppt,
INT count)
{
XFORMOBJ xo;
XFORMOBJ_vInit(&xo, &pdc->pdcattr->mxDeviceToWorld);
return XFORMOBJ_bApplyXform(&xo, XF_LTOL, count, (PPOINTL)ppt, (PPOINTL)ppt);
}
/* PATH_InitGdiPath
*
* Initializes the GdiPath structure.
*/
VOID
FASTCALL
PATH_InitGdiPath(
PPATH pPath)
{
ASSERT(pPath != NULL);
pPath->state = PATH_Null;
pPath->pPoints = NULL;
pPath->pFlags = NULL;
pPath->numEntriesUsed = 0;
pPath->numEntriesAllocated = 0;
}
/* PATH_AssignGdiPath
*
* Copies the GdiPath structure "pPathSrc" to "pPathDest". A deep copy is
* performed, i.e. the contents of the pPoints and pFlags arrays are copied,
* not just the pointers. Since this means that the arrays in pPathDest may
* need to be resized, pPathDest should have been initialized using
* PATH_InitGdiPath (in C++, this function would be an assignment operator,
* not a copy constructor).
* Returns TRUE if successful, else FALSE.
*/
BOOL
FASTCALL
PATH_AssignGdiPath(
PPATH pPathDest,
const PPATH pPathSrc)
{
ASSERT(pPathDest != NULL && pPathSrc != NULL);
/* Make sure destination arrays are big enough */
if (!PATH_ReserveEntries(pPathDest, pPathSrc->numEntriesUsed))
return FALSE;
/* Perform the copy operation */
memcpy(pPathDest->pPoints, pPathSrc->pPoints, sizeof(POINT)*pPathSrc->numEntriesUsed);
memcpy(pPathDest->pFlags, pPathSrc->pFlags, sizeof(BYTE)*pPathSrc->numEntriesUsed);
pPathDest->pos = pPathSrc->pos;
pPathDest->state = pPathSrc->state;
pPathDest->numEntriesUsed = pPathSrc->numEntriesUsed;
pPathDest->newStroke = pPathSrc->newStroke;
return TRUE;
}
BOOL PATH_SavePath( DC *dst, DC *src )
{
PPATH pdstPath, psrcPath = PATH_LockPath(src->dclevel.hPath);
TRACE("PATH_SavePath\n");
if (psrcPath)
{
TRACE("PATH_SavePath 1\n");
pdstPath = PATH_CreatePath(psrcPath->numEntriesAllocated);
dst->dclevel.flPath = src->dclevel.flPath;
dst->dclevel.hPath = pdstPath->BaseObject.hHmgr;
PATH_AssignGdiPath(pdstPath, psrcPath);
PATH_UnlockPath(pdstPath);
PATH_UnlockPath(psrcPath);
}
return TRUE;
}
BOOL PATH_RestorePath( DC *dst, DC *src )
{
TRACE("PATH_RestorePath\n");
if (dst->dclevel.hPath == NULL)
{
PPATH pdstPath, psrcPath = PATH_LockPath(src->dclevel.hPath);
TRACE("PATH_RestorePath 1\n");
pdstPath = PATH_CreatePath(psrcPath->numEntriesAllocated);
dst->dclevel.flPath = src->dclevel.flPath;
dst->dclevel.hPath = pdstPath->BaseObject.hHmgr;
PATH_AssignGdiPath(pdstPath, psrcPath);
PATH_UnlockPath(pdstPath);
PATH_UnlockPath(psrcPath);
}
else
{
PPATH pdstPath, psrcPath = PATH_LockPath(src->dclevel.hPath);
pdstPath = PATH_LockPath(dst->dclevel.hPath);
TRACE("PATH_RestorePath 2\n");
dst->dclevel.flPath = src->dclevel.flPath & (DCPATH_CLOCKWISE|DCPATH_ACTIVE);
PATH_AssignGdiPath(pdstPath, psrcPath);
PATH_UnlockPath(pdstPath);
PATH_UnlockPath(psrcPath);
}
return TRUE;
}
/* PATH_EmptyPath
*
* Removes all entries from the path and sets the path state to PATH_Null.
*/
VOID
FASTCALL
PATH_EmptyPath(PPATH pPath)
{
ASSERT(pPath != NULL);
pPath->state = PATH_Null;
pPath->numEntriesUsed = 0;
}
/* PATH_AddEntry
*
* Adds an entry to the path. For "flags", pass either PT_MOVETO, PT_LINETO
* or PT_BEZIERTO, optionally ORed with PT_CLOSEFIGURE. Returns TRUE if
* successful, FALSE otherwise (e.g. if not enough memory was available).
*/
BOOL
FASTCALL
PATH_AddEntry(
PPATH pPath,
const POINT *pPoint,
BYTE flags)
{
ASSERT(pPath != NULL);
/* FIXME: If newStroke is true, perhaps we want to check that we're
* getting a PT_MOVETO
*/
TRACE("(%d,%d) - %d\n", pPoint->x, pPoint->y, flags);
/* Reserve enough memory for an extra path entry */
if (!PATH_ReserveEntries(pPath, pPath->numEntriesUsed + 1))
return FALSE;
/* Store information in path entry */
pPath->pPoints[pPath->numEntriesUsed] = *pPoint;
pPath->pFlags[pPath->numEntriesUsed] = flags;
/* Increment entry count */
pPath->numEntriesUsed++;
return TRUE;
}
/* PATH_ReserveEntries
*
* Ensures that at least "numEntries" entries (for points and flags) have
* been allocated; allocates larger arrays and copies the existing entries
* to those arrays, if necessary. Returns TRUE if successful, else FALSE.
*/
BOOL
FASTCALL
PATH_ReserveEntries(
PPATH pPath,
INT numEntries)
{
INT numEntriesToAllocate;
POINT *pPointsNew;
BYTE *pFlagsNew;
ASSERT(pPath != NULL);
ASSERT(numEntries >= 0);
/* Do we have to allocate more memory? */
if (numEntries > pPath->numEntriesAllocated)
{
/* Find number of entries to allocate. We let the size of the array
* grow exponentially, since that will guarantee linear time
* complexity. */
if (pPath->numEntriesAllocated)
{
numEntriesToAllocate = pPath->numEntriesAllocated;
while (numEntriesToAllocate < numEntries)
numEntriesToAllocate = numEntriesToAllocate * GROW_FACTOR_NUMER / GROW_FACTOR_DENOM;
}
else
numEntriesToAllocate = numEntries;
/* Allocate new arrays */
pPointsNew = (POINT *)ExAllocatePoolWithTag(PagedPool, numEntriesToAllocate * sizeof(POINT), TAG_PATH);
if (!pPointsNew)
return FALSE;
pFlagsNew = (BYTE *)ExAllocatePoolWithTag(PagedPool, numEntriesToAllocate * sizeof(BYTE), TAG_PATH);
if (!pFlagsNew)
{
ExFreePoolWithTag(pPointsNew, TAG_PATH);
return FALSE;
}
/* Copy old arrays to new arrays and discard old arrays */
if (pPath->pPoints)
{
ASSERT(pPath->pFlags);
memcpy(pPointsNew, pPath->pPoints, sizeof(POINT)*pPath->numEntriesUsed);
memcpy(pFlagsNew, pPath->pFlags, sizeof(BYTE)*pPath->numEntriesUsed);
ExFreePoolWithTag(pPath->pPoints, TAG_PATH);
ExFreePoolWithTag(pPath->pFlags, TAG_PATH);
}
pPath->pPoints = pPointsNew;
pPath->pFlags = pFlagsNew;
pPath->numEntriesAllocated = numEntriesToAllocate;
}
return TRUE;
}
/* PATH_ScaleNormalizedPoint
*
* Scales a normalized point (x, y) with respect to the box whose corners are
* passed in "corners". The point is stored in "*pPoint". The normalized
* coordinates (-1.0, -1.0) correspond to corners[0], the coordinates
* (1.0, 1.0) correspond to corners[1].
*/
static
BOOLEAN
PATH_ScaleNormalizedPoint(
POINT corners[],
FLOATL x,
FLOATL y,
POINT *pPoint)
{
FLOATOBJ tmp;
ASSERT(corners);
ASSERT(pPoint);
/* pPoint->x = (double)corners[0].x + (double)(corners[1].x - corners[0].x) * 0.5 * (x + 1.0); */
FLOATOBJ_SetFloat(&tmp, x);
FLOATOBJ_Add(&tmp, (FLOATOBJ*)&gef1);
FLOATOBJ_Div(&tmp, (FLOATOBJ*)&gef2);
FLOATOBJ_MulLong(&tmp, corners[1].x - corners[0].x);
FLOATOBJ_AddLong(&tmp, corners[0].x);
if (!FLOATOBJ_bConvertToLong(&tmp, &pPoint->x))
return FALSE;
/* pPoint->y = (double)corners[0].y + (double)(corners[1].y - corners[0].y) * 0.5 * (y + 1.0); */
FLOATOBJ_SetFloat(&tmp, y);
FLOATOBJ_Add(&tmp, (FLOATOBJ*)&gef1);
FLOATOBJ_Div(&tmp, (FLOATOBJ*)&gef2);
FLOATOBJ_MulLong(&tmp, corners[1].y - corners[0].y);
FLOATOBJ_AddLong(&tmp, corners[0].y);
if (!FLOATOBJ_bConvertToLong(&tmp, &pPoint->y))
return FALSE;
return TRUE;
}
/* PATH_NormalizePoint
*
* Normalizes a point with respect to the box whose corners are passed in
* corners. The normalized coordinates are stored in *pX and *pY.
*/
static
VOID
PATH_NormalizePoint(
POINTL corners[],
const POINTL *pPoint,
FLOATL *pX,
FLOATL *pY)
{
FLOATOBJ tmp;
ASSERT(corners);
ASSERT(pPoint);
ASSERT(pX);
ASSERT(pY);
/* *pX = (float)(pPoint->x - corners[0].x) / (float)(corners[1].x - corners[0].x) * 2.0 - 1.0; */
FLOATOBJ_SetLong(&tmp, (pPoint->x - corners[0].x) * 2);
FLOATOBJ_DivLong(&tmp, corners[1].x - corners[0].x);
FLOATOBJ_Sub(&tmp, (PFLOATOBJ)&gef1);
*pX = FLOATOBJ_GetFloat(&tmp);
/* *pY = (float)(pPoint->y - corners[0].y) / (float)(corners[1].y - corners[0].y) * 2.0 - 1.0; */
FLOATOBJ_SetLong(&tmp, (pPoint->y - corners[0].y) * 2);
FLOATOBJ_DivLong(&tmp, corners[1].y - corners[0].y);
FLOATOBJ_Sub(&tmp, (PFLOATOBJ)&gef1);
*pY = FLOATOBJ_GetFloat(&tmp);
}
/* PATH_CheckCorners
*
* Helper function for PATH_RoundRect() and PATH_Rectangle()
*/
static
BOOL
PATH_CheckRect(
DC *dc,
RECTL* rect,
INT x1,
INT y1,
INT x2,
INT y2)
{
PDC_ATTR pdcattr = dc->pdcattr;
/* Convert points to device coordinates */
RECTL_vSetRect(rect, x1, y1, x2, y2);
IntLPtoDP(dc, (PPOINT)rect, 2);
/* Make sure first corner is top left and second corner is bottom right */
RECTL_vMakeWellOrdered(rect);
/* In GM_COMPATIBLE, don't include bottom and right edges */
if (pdcattr->iGraphicsMode == GM_COMPATIBLE)
{
if (rect->left == rect->right) return FALSE;
if (rect->top == rect->bottom) return FALSE;
rect->right--;
rect->bottom--;
}
return TRUE;
}
/* add a number of points, converting them to device coords */
/* return a pointer to the first type byte so it can be fixed up if necessary */
static BYTE *add_log_points( DC *dc, PPATH path, const POINT *points,
DWORD count, BYTE type )
{
BYTE *ret;
if (!PATH_ReserveEntries( path, path->numEntriesUsed + count )) return NULL;
ret = &path->pFlags[path->numEntriesUsed];
memcpy( &path->pPoints[path->numEntriesUsed], points, count * sizeof(*points) );
IntLPtoDP( dc, &path->pPoints[path->numEntriesUsed], count );
memset( ret, type, count );
path->numEntriesUsed += count;
return ret;
}
/* add a number of points that are already in device coords */
/* return a pointer to the first type byte so it can be fixed up if necessary */
static BYTE *add_points( PPATH path, const POINT *points, DWORD count, BYTE type )
{
BYTE *ret;
if (!PATH_ReserveEntries( path, path->numEntriesUsed + count )) return NULL;
ret = &path->pFlags[path->numEntriesUsed];
memcpy( &path->pPoints[path->numEntriesUsed], points, count * sizeof(*points) );
memset( ret, type, count );
path->numEntriesUsed += count;
return ret;
}
/* reverse the order of an array of points */
static void reverse_points( POINT *points, UINT count )
{
UINT i;
for (i = 0; i < count / 2; i++)
{
POINT pt = points[i];
points[i] = points[count - i - 1];
points[count - i - 1] = pt;
}
}
/* start a new path stroke if necessary */
static BOOL start_new_stroke( PPATH path )
{
if (!path->newStroke && path->numEntriesUsed &&
!(path->pFlags[path->numEntriesUsed - 1] & PT_CLOSEFIGURE) &&
path->pPoints[path->numEntriesUsed - 1].x == path->pos.x &&
path->pPoints[path->numEntriesUsed - 1].y == path->pos.y)
return TRUE;
path->newStroke = FALSE;
return add_points( path, &path->pos, 1, PT_MOVETO ) != NULL;
}
/* set current position to the last point that was added to the path */
static void update_current_pos( PPATH path )
{
ASSERT(path->numEntriesUsed);
path->pos = path->pPoints[path->numEntriesUsed - 1];
}
/* close the current figure */
static void close_figure( PPATH path )
{
ASSERT(path->numEntriesUsed);
path->pFlags[path->numEntriesUsed - 1] |= PT_CLOSEFIGURE;
}
/* add a number of points, starting a new stroke if necessary */
static BOOL add_log_points_new_stroke( DC *dc, PPATH path, const POINT *points,
DWORD count, BYTE type )
{
if (!start_new_stroke( path )) return FALSE;
if (!add_log_points( dc, path, points, count, type )) return FALSE;
update_current_pos( path );
TRACE("ALPNS : Pos X %d Y %d\n",path->pos.x, path->pos.y);
IntGdiMoveToEx(dc, path->pos.x, path->pos.y, NULL);
return TRUE;
}
/* PATH_MoveTo
*
* Should be called when a MoveTo is performed on a DC that has an
* open path. This starts a new stroke. Returns TRUE if successful, else
* FALSE.
*/
BOOL
FASTCALL
PATH_MoveTo(
PDC dc,
PPATH pPath)
{
if (!pPath) return FALSE;
// GDI32 : Signal from user space of a change in position.
if (dc->pdcattr->ulDirty_ & DIRTY_STYLESTATE)
{
TRACE("MoveTo has changed\n");
pPath->newStroke = TRUE;
// Set position and clear the signal flag.
IntGetCurrentPositionEx(dc, &pPath->pos);
IntLPtoDP( dc, &pPath->pos, 1 );
return TRUE;
}
return FALSE;
}
/* PATH_LineTo
*
* Should be called when a LineTo is performed on a DC that has an
* open path. This adds a PT_LINETO entry to the path (and possibly
* a PT_MOVETO entry, if this is the first LineTo in a stroke).
* Returns TRUE if successful, else FALSE.
*/
BOOL
FASTCALL
PATH_LineTo(
PDC dc,
INT x,
INT y)
{
BOOL Ret;
PPATH pPath;
POINT point, pointCurPos;
pPath = PATH_LockPath(dc->dclevel.hPath);
if (!pPath) return FALSE;
point.x = x;
point.y = y;
// Coalesce a MoveTo point.
if ( !PATH_MoveTo(dc, pPath) )
{
/* Add a PT_MOVETO if necessary */
if (pPath->newStroke)
{
TRACE("Line To : New Stroke\n");
pPath->newStroke = FALSE;
IntGetCurrentPositionEx(dc, &pointCurPos);
CoordLPtoDP(dc, &pointCurPos);
if (!PATH_AddEntry(pPath, &pointCurPos, PT_MOVETO))
{
PATH_UnlockPath(pPath);
return FALSE;
}
}
}
Ret = add_log_points_new_stroke( dc, pPath, &point, 1, PT_LINETO );
PATH_UnlockPath(pPath);
return Ret;
}
/* PATH_Rectangle
*
* Should be called when a call to Rectangle is performed on a DC that has
* an open path. Returns TRUE if successful, else FALSE.
*/
BOOL
FASTCALL
PATH_Rectangle(
PDC dc,
INT x1,
INT y1,
INT x2,
INT y2)
{
PPATH pPath;
RECTL rect;
POINTL points[4];
BYTE *type;
pPath = PATH_LockPath(dc->dclevel.hPath);
if (!pPath) return FALSE;
if (!PATH_CheckRect(dc, &rect, x1, y1, x2, y2))
{
PATH_UnlockPath(pPath);
return TRUE;
}
points[0].x = rect.right; points[0].y = rect.top;
points[1].x = rect.left; points[1].y = rect.top;
points[2].x = rect.left; points[2].y = rect.bottom;
points[3].x = rect.right; points[3].y = rect.bottom;
if (dc->dclevel.flPath & DCPATH_CLOCKWISE) reverse_points(points, 4 );
if (!(type = add_points( pPath, points, 4, PT_LINETO )))
{
PATH_UnlockPath(pPath);
return FALSE;
}
type[0] = PT_MOVETO;
/* Close the rectangle figure */
IntGdiCloseFigure(pPath) ;
PATH_UnlockPath(pPath);
return TRUE;
}
/* PATH_RoundRect
*
* Should be called when a call to RoundRect is performed on a DC that has
* an open path. Returns TRUE if successful, else FALSE.
*
*/
BOOL
PATH_RoundRect(
DC *dc,
INT x1,
INT y1,
INT x2,
INT y2,
INT ell_width,
INT ell_height)
{
PPATH pPath;
RECTL rect, ellipse;
POINT points[16];
BYTE *type;
INT xOffset, yOffset;
if (!ell_width || !ell_height) return PATH_Rectangle( dc, x1, y1, x2, y2 );
pPath = PATH_LockPath(dc->dclevel.hPath);
if (!pPath) return FALSE;
if (!PATH_CheckRect(dc, &rect, x1, y1, x2, y2))
{
PATH_UnlockPath(pPath);
return TRUE;
}
RECTL_vSetRect(&ellipse, 0, 0, ell_width, ell_height);
IntLPtoDP( dc, (PPOINT)&ellipse, 2 );
RECTL_vMakeWellOrdered(&ellipse);
ell_width = min(RECTL_lGetWidth(&ellipse), RECTL_lGetWidth(&rect));
ell_height = min(RECTL_lGetHeight(&ellipse), RECTL_lGetHeight(&rect));
/*
* See here to understand what's happening
* https://stackoverflow.com/questions/1734745/how-to-create-circle-with-b%C3%A9zier-curves
*/
xOffset = EngMulDiv(ell_width, 44771525, 200000000); /* w * (1 - 0.5522847) / 2 */
yOffset = EngMulDiv(ell_height, 44771525, 200000000); /* h * (1 - 0.5522847) / 2 */
TRACE("xOffset %d, yOffset %d, Rect WxH: %dx%d.\n",
xOffset, yOffset, RECTL_lGetWidth(&rect), RECTL_lGetHeight(&rect));
/*
* Get half width & height.
* Do not use integer division, we need the rounding made by EngMulDiv.
*/
ell_width = EngMulDiv(ell_width, 1, 2);
ell_height = EngMulDiv(ell_height, 1, 2);
/* starting point */
points[0].x = rect.right;
points[0].y = rect.top + ell_height;
/* first curve */
points[1].x = rect.right;
points[1].y = rect.top + yOffset;
points[2].x = rect.right - xOffset;
points[2].y = rect.top;
points[3].x = rect.right - ell_width;
points[3].y = rect.top;
/* horizontal line */
points[4].x = rect.left + ell_width;
points[4].y = rect.top;
/* second curve */
points[5].x = rect.left + xOffset;
points[5].y = rect.top;
points[6].x = rect.left;
points[6].y = rect.top + yOffset;
points[7].x = rect.left;
points[7].y = rect.top + ell_height;
/* vertical line */
points[8].x = rect.left;
points[8].y = rect.bottom - ell_height;
/* third curve */
points[9].x = rect.left;
points[9].y = rect.bottom - yOffset;
points[10].x = rect.left + xOffset;
points[10].y = rect.bottom;
points[11].x = rect.left + ell_width;
points[11].y = rect.bottom;
/* horizontal line */
points[12].x = rect.right - ell_width;
points[12].y = rect.bottom;
/* fourth curve */
points[13].x = rect.right - xOffset;
points[13].y = rect.bottom;
points[14].x = rect.right;
points[14].y = rect.bottom - yOffset;
points[15].x = rect.right;
points[15].y = rect.bottom - ell_height;
if (dc->dclevel.flPath & DCPATH_CLOCKWISE) reverse_points( points, 16 );
if (!(type = add_points( pPath, points, 16, PT_BEZIERTO )))
{
PATH_UnlockPath(pPath);
return FALSE;
}
type[0] = PT_MOVETO;
type[4] = type[8] = type[12] = PT_LINETO;
IntGdiCloseFigure(pPath);
PATH_UnlockPath(pPath);
return TRUE;
}
/* PATH_Ellipse
*
*/
BOOL
PATH_Ellipse(
PDC dc,
INT x1,
INT y1,
INT x2,
INT y2)
{
PPATH pPath;
POINT points[13];
RECTL rect;
BYTE *type;
LONG xRadius, yRadius, xOffset, yOffset;
POINT left, top, right, bottom;
TRACE("PATH_Ellipse: %p -> (%d, %d) - (%d, %d)\n",
dc, x1, y1, x2, y2);
if (!PATH_CheckRect(dc, &rect, x1, y1, x2, y2))
{
return TRUE;
}
xRadius = RECTL_lGetWidth(&rect) / 2;
yRadius = RECTL_lGetHeight(&rect) / 2;
/* Get the four points which box our ellipse */
left.x = rect.left; left.y = rect.top + yRadius;
top.x = rect.left + xRadius; top.y = rect.top;
right.x = rect.right; right.y = rect.bottom - yRadius;
bottom.x = rect.right - xRadius; bottom.y = rect.bottom;
/*
* See here to understand what's happening
* https://stackoverflow.com/questions/1734745/how-to-create-circle-with-b%C3%A9zier-curves
*/
xOffset = EngMulDiv(RECTL_lGetWidth(&rect), 55428475, 200000000); /* w * 0.55428475 / 2 */
yOffset = EngMulDiv(RECTL_lGetHeight(&rect), 55428475, 200000000); /* h * 0.55428475 / 2 */
TRACE("xOffset %d, yOffset %d, Rect WxH: %dx%d.\n",
xOffset, yOffset, RECTL_lGetWidth(&rect), RECTL_lGetHeight(&rect));
pPath = PATH_LockPath(dc->dclevel.hPath);
if (!pPath)
return FALSE;
/* Starting point: Right */
points[0] = right;
/* first curve - going up, left */
points[1] = right;
points[1].y -= yOffset;
points[2] = top;
points[2].x += xOffset;
/* top */
points[3] = top;
/* second curve - going left, down*/
points[4] = top;
points[4].x -= xOffset;
points[5] = left;
points[5].y -= yOffset;
/* Left */
points[6] = left;
/* Third curve - going down, right */
points[7] = left;
points[7].y += yOffset;
points[8] = bottom;
points[8].x -= xOffset;
/* bottom */
points[9] = bottom;
/* Fourth curve - Going right, up */
points[10] = bottom;
points[10].x += xOffset;
points[11] = right;
points[11].y += yOffset;
/* Back to starting point */
points[12] = right;
if (dc->dclevel.flPath & DCPATH_CLOCKWISE) reverse_points( points, 13 );
if (!(type = add_points( pPath, points, 13, PT_BEZIERTO )))
{
ERR("PATH_Ellipse No add\n");
PATH_UnlockPath(pPath);
return FALSE;
}
type[0] = PT_MOVETO;
IntGdiCloseFigure(pPath);
PATH_UnlockPath(pPath);
return TRUE;
}
/* PATH_DoArcPart
*
* Creates a Bezier spline that corresponds to part of an arc and appends the
* corresponding points to the path. The start and end angles are passed in
* "angleStart" and "angleEnd"; these angles should span a quarter circle
* at most. If "startEntryType" is non-zero, an entry of that type for the first
* control point is added to the path; otherwise, it is assumed that the current
* position is equal to the first control point.
*/
static
BOOL
PATH_DoArcPart(
PPATH pPath,
POINT corners[],
double angleStart,
double angleEnd,
BYTE startEntryType)
{
double halfAngle, a;
float xNorm[4], yNorm[4];
POINT points[4];
BYTE *type;
int i, start;
ASSERT(fabs(angleEnd - angleStart) <= M_PI_2);
/* FIXME: Is there an easier way of computing this? */
/* Compute control points */
halfAngle = (angleEnd - angleStart) / 2.0;
if (fabs(halfAngle) > 1e-8)
{
a = 4.0 / 3.0 * (1 - cos(halfAngle)) / sin(halfAngle);
xNorm[0] = cos(angleStart);
yNorm[0] = sin(angleStart);
xNorm[1] = xNorm[0] - a * yNorm[0];
yNorm[1] = yNorm[0] + a * xNorm[0];
xNorm[3] = cos(angleEnd);
yNorm[3] = sin(angleEnd);
xNorm[2] = xNorm[3] + a * yNorm[3];
yNorm[2] = yNorm[3] - a * xNorm[3];
}
else
for (i = 0; i < 4; i++)
{
xNorm[i] = cos(angleStart);
yNorm[i] = sin(angleStart);
}
/* Add starting point to path if desired */
start = !startEntryType;
/* Add remaining control points */
for (i = start; i < 4; i++)
{
if (!PATH_ScaleNormalizedPoint(corners, *(FLOATL*)&xNorm[i], *(FLOATL*)&yNorm[i], &points[i]))
return FALSE;
}
if (!(type = add_points( pPath, points + start, 4 - start, PT_BEZIERTO ))) return FALSE;
if (!start) type[0] = startEntryType;
return TRUE;
}
/* PATH_Arc
*
* Should be called when a call to Arc is performed on a DC that has
* an open path. This adds up to five Bezier splines representing the arc
* to the path. When 'lines' is 1, we add 1 extra line to get a chord,
* when 'lines' is 2, we add 2 extra lines to get a pie, and when 'lines' is
* -1 we add 1 extra line from the current DC position to the starting position
* of the arc before drawing the arc itself (arcto). Returns TRUE if successful,
* else FALSE.
*/
BOOL
FASTCALL
PATH_Arc(
PDC dc,
INT x1,
INT y1,
INT x2,
INT y2,
INT xStart,
INT yStart,
INT xEnd,
INT yEnd,
INT direction,
INT lines)
{
double angleStart, angleEnd, angleStartQuadrant, angleEndQuadrant = 0.0;
/* Initialize angleEndQuadrant to silence gcc's warning */
FLOATL x, y;
POINT corners[2], pointStart, pointEnd;
POINT centre, pointCurPos;
BOOL start, end, Ret = TRUE;
INT temp;
BOOL clockwise;
PPATH pPath;
/* FIXME: This function should check for all possible error returns */
/* FIXME: Do we have to respect newStroke? */
ASSERT(dc);
pPath = PATH_LockPath(dc->dclevel.hPath);
if (!pPath) return FALSE;
if (direction)
clockwise = ((direction == AD_CLOCKWISE) !=0 );
else
clockwise = ((dc->dclevel.flPath & DCPATH_CLOCKWISE) != 0);
/* Check for zero height / width */
/* FIXME: Only in GM_COMPATIBLE? */
if (x1 == x2 || y1 == y2)
{
Ret = TRUE;
goto ArcExit;
}
/* Convert points to device coordinates */
corners[0].x = x1; corners[0].y = y1;
corners[1].x = x2; corners[1].y = y2;
pointStart.x = xStart; pointStart.y = yStart;
pointEnd.x = xEnd; pointEnd.y = yEnd;
INTERNAL_LPTODP(dc, corners, 2);
INTERNAL_LPTODP(dc, &pointStart, 1);
INTERNAL_LPTODP(dc, &pointEnd, 1);
/* Make sure first corner is top left and second corner is bottom right */
if (corners[0].x > corners[1].x)
{
temp = corners[0].x;
corners[0].x = corners[1].x;
corners[1].x = temp;
}
if (corners[0].y > corners[1].y)
{
temp = corners[0].y;
corners[0].y = corners[1].y;
corners[1].y = temp;
}
/* Compute start and end angle */
PATH_NormalizePoint(corners, &pointStart, &x, &y);
angleStart = atan2(*(FLOAT*)&y, *(FLOAT*)&x);
PATH_NormalizePoint(corners, &pointEnd, &x, &y);
angleEnd = atan2(*(FLOAT*)&y, *(FLOAT*)&x);
/* Make sure the end angle is "on the right side" of the start angle */
if (clockwise)
{
if (angleEnd <= angleStart)
{
angleEnd += 2 * M_PI;
ASSERT(angleEnd >= angleStart);
}
}
else
{
if (angleEnd >= angleStart)
{
angleEnd -= 2 * M_PI;
ASSERT(angleEnd <= angleStart);
}
}
/* In GM_COMPATIBLE, don't include bottom and right edges */
if (dc->pdcattr->iGraphicsMode == GM_COMPATIBLE)
{
corners[1].x--;
corners[1].y--;
}
/* arcto: Add a PT_MOVETO only if this is the first entry in a stroke */
if (lines == GdiTypeArcTo && pPath->newStroke) // -1
{
pPath->newStroke = FALSE;
IntGetCurrentPositionEx(dc, &pointCurPos);
CoordLPtoDP(dc, &pointCurPos);
if (!PATH_AddEntry(pPath, &pointCurPos, PT_MOVETO))
{
Ret = FALSE;
goto ArcExit;
}
}
/* Add the arc to the path with one Bezier spline per quadrant that the
* arc spans */
start = TRUE;
end = FALSE;
do
{
/* Determine the start and end angles for this quadrant */
if (start)
{
angleStartQuadrant = angleStart;
if (clockwise)
angleEndQuadrant = (floor(angleStart / M_PI_2) + 1.0) * M_PI_2;
else
angleEndQuadrant = (ceil(angleStart / M_PI_2) - 1.0) * M_PI_2;
}
else
{
angleStartQuadrant = angleEndQuadrant;
if (clockwise)
angleEndQuadrant += M_PI_2;
else
angleEndQuadrant -= M_PI_2;
}
/* Have we reached the last part of the arc? */
if ((clockwise && angleEnd < angleEndQuadrant) ||
(!clockwise && angleEnd > angleEndQuadrant))
{
/* Adjust the end angle for this quadrant */
angleEndQuadrant = angleEnd;
end = TRUE;
}
/* Add the Bezier spline to the path */
PATH_DoArcPart(pPath,
corners,
angleStartQuadrant,
angleEndQuadrant,
start ? (lines == GdiTypeArcTo ? PT_LINETO : PT_MOVETO) : FALSE); // -1
start = FALSE;
}
while (!end);
if (lines == GdiTypeArcTo)
{
update_current_pos( pPath );
}
else /* chord: close figure. pie: add line and close figure */
if (lines == GdiTypeChord) // 1
{
IntGdiCloseFigure(pPath);
}
else if (lines == GdiTypePie) // 2
{
centre.x = (corners[0].x + corners[1].x) / 2;
centre.y = (corners[0].y + corners[1].y) / 2;
if (!PATH_AddEntry(pPath, &centre, PT_LINETO | PT_CLOSEFIGURE))
Ret = FALSE;
}
ArcExit:
PATH_UnlockPath(pPath);
return Ret;
}
BOOL
FASTCALL
PATH_PolyBezierTo(
PDC dc,
const POINT *pts,
DWORD cbPoints)
{
PPATH pPath;
BOOL ret;
ASSERT(dc);
ASSERT(pts);
ASSERT(cbPoints);
pPath = PATH_LockPath(dc->dclevel.hPath);
if (!pPath) return FALSE;
ret = add_log_points_new_stroke( dc, pPath, pts, cbPoints, PT_BEZIERTO );
PATH_UnlockPath(pPath);
return ret;
}
BOOL
FASTCALL
PATH_PolyBezier(
PDC dc,
const POINT *pts,
DWORD cbPoints)
{
PPATH pPath;
BYTE *type;
ASSERT(dc);
ASSERT(pts);
ASSERT(cbPoints);
pPath = PATH_LockPath(dc->dclevel.hPath);
if (!pPath) return FALSE;
type = add_log_points( dc, pPath, pts, cbPoints, PT_BEZIERTO );
if (!type) return FALSE;
type[0] = PT_MOVETO;
PATH_UnlockPath(pPath);
return TRUE;
}
BOOL
FASTCALL
PATH_PolyDraw(
PDC dc,
const POINT *pts,
const BYTE *types,
DWORD cbPoints)
{
PPATH pPath;
POINT orig_pos, cur_pos;
ULONG i, lastmove = 0;
pPath = PATH_LockPath(dc->dclevel.hPath);
if (!pPath) return FALSE;
if (pPath->state != PATH_Open)
{
PATH_UnlockPath(pPath);
return FALSE;
}
for (i = 0; i < pPath->numEntriesUsed; i++) if (pPath->pFlags[i] == PT_MOVETO) lastmove = i;
orig_pos = pPath->pos;
IntGetCurrentPositionEx(dc, &cur_pos);
TRACE("PPD : Current pos X %d Y %d\n",pPath->pos.x, pPath->pos.y);
TRACE("PPD : last %d pos X %d Y %d\n",lastmove, pPath->pPoints[lastmove].x, pPath->pPoints[lastmove].y);
for(i = 0; i < cbPoints; i++)
{
switch (types[i])
{
case PT_MOVETO:
pPath->newStroke = TRUE;
pPath->pos = pts[i];
IntLPtoDP( dc, &pPath->pos, 1);
lastmove = pPath->numEntriesUsed;
break;
case PT_LINETO:
case PT_LINETO | PT_CLOSEFIGURE:
if (!add_log_points_new_stroke( dc, pPath, &pts[i], 1, PT_LINETO ))
{
PATH_UnlockPath(pPath);
return FALSE;
}
break;
case PT_BEZIERTO:
if ((i + 2 < cbPoints) && (types[i + 1] == PT_BEZIERTO) &&
(types[i + 2] & ~PT_CLOSEFIGURE) == PT_BEZIERTO)
{
if (!add_log_points_new_stroke( dc, pPath, &pts[i], 3, PT_BEZIERTO ))
{
PATH_UnlockPath(pPath);
return FALSE;
}
i += 2;
break;
}
/* fall through */
default:
/* restore original position */
pPath->pos = orig_pos;
TRACE("PPD Bad : pos X %d Y %d\n",pPath->pos.x, pPath->pos.y);
IntGdiMoveToEx(dc, cur_pos.x, cur_pos.y, NULL);
PATH_UnlockPath(pPath);
return FALSE;
}
if (types[i] & PT_CLOSEFIGURE)
{
close_figure( pPath );
pPath->pos = pPath->pPoints[lastmove];
TRACE("PPD close : pos X %d Y %d\n",pPath->pos.x, pPath->pos.y);
}
}
PATH_UnlockPath(pPath);
return TRUE;
}
BOOL
FASTCALL
PATH_PolylineTo(
PDC dc,
const POINT *pts,
DWORD cbPoints)
{
PPATH pPath;
BOOL ret;
ASSERT(dc);
ASSERT(pts);
ASSERT(cbPoints);
if (cbPoints < 1) return FALSE;
pPath = PATH_LockPath(dc->dclevel.hPath);
if (!pPath) return FALSE;
ret = add_log_points_new_stroke( dc, pPath, pts, cbPoints, PT_LINETO );
PATH_UnlockPath(pPath);
return ret;
}
BOOL
FASTCALL
PATH_PolyPolygon(
PDC dc,
const POINT* pts,
const INT* counts,
UINT polygons)
{
UINT poly, count;
BYTE *type;
PPATH pPath;
ASSERT(dc);
ASSERT(pts);
ASSERT(counts);
ASSERT(polygons);
if (!polygons) return FALSE;
pPath = PATH_LockPath(dc->dclevel.hPath);
if (!pPath) return FALSE;
for (poly = count = 0; poly < polygons; poly++)
{
if (counts[poly] < 2)
{
PATH_UnlockPath(pPath);
return FALSE;
}
count += counts[poly];
}
type = add_log_points( dc, pPath, pts, count, PT_LINETO );
if (!type)
{
PATH_UnlockPath(pPath);
return FALSE;
}
/* make the first point of each polyline a PT_MOVETO, and close the last one */
for (poly = 0; poly < polygons; type += counts[poly++])
{
type[0] = PT_MOVETO;
type[counts[poly] - 1] = PT_LINETO | PT_CLOSEFIGURE;
}
PATH_UnlockPath(pPath);
return TRUE;
}
BOOL
FASTCALL
PATH_PolyPolyline(
PDC dc,
const POINT* pts,
const DWORD* counts,
DWORD polylines)
{
POINT pt;
ULONG poly, point, i;
PPATH pPath;
ASSERT(dc);
ASSERT(pts);
ASSERT(counts);
ASSERT(polylines);
pPath = PATH_LockPath(dc->dclevel.hPath);
if (!pPath)
{
return FALSE;
}
for (i = 0, poly = 0; poly < polylines; poly++)
{
for (point = 0; point < counts[poly]; point++, i++)
{
pt = pts[i];
CoordLPtoDP(dc, &pt);
PATH_AddEntry(pPath, &pt, (point == 0) ? PT_MOVETO : PT_LINETO);
}
}
TRACE("PATH_PolyPolyline end count %d\n",pPath->numEntriesUsed);
PATH_UnlockPath(pPath);
return TRUE;
}
/* PATH_AddFlatBezier
*
*/
BOOL
FASTCALL
PATH_AddFlatBezier(
PPATH pPath,
POINT *pt,
BOOL closed)
{
POINT *pts;
BOOL ret = FALSE;
INT no, i;
pts = GDI_Bezier(pt, 4, &no);
if (!pts) return FALSE;
for (i = 1; i < no; i++)
{
if (!(ret = PATH_AddEntry(pPath, &pts[i], (i == no - 1 && closed) ? PT_LINETO | PT_CLOSEFIGURE : PT_LINETO)))
break;
}
ExFreePoolWithTag(pts, TAG_BEZIER);
return ret;
}
/* PATH_FlattenPath
*
* Replaces Beziers with line segments
*
*/
PPATH
FASTCALL
PATH_FlattenPath(PPATH pPath)
{
PPATH newPath;
INT srcpt;
TRACE("PATH_FlattenPath\n");
if (!(newPath = PATH_CreatePath(pPath->numEntriesUsed))) return NULL;
for (srcpt = 0; srcpt < pPath->numEntriesUsed; srcpt++)
{
switch(pPath->pFlags[srcpt] & ~PT_CLOSEFIGURE)
{
case PT_MOVETO:
case PT_LINETO:
if (!PATH_AddEntry(newPath, &pPath->pPoints[srcpt], pPath->pFlags[srcpt]))
{
PATH_UnlockPath(newPath);
PATH_Delete(newPath->BaseObject.hHmgr);
return NULL;
}
break;
case PT_BEZIERTO:
if(!PATH_AddFlatBezier(newPath, &pPath->pPoints[srcpt - 1], pPath->pFlags[srcpt + 2] & PT_CLOSEFIGURE))
{
PATH_UnlockPath(newPath);
PATH_Delete(newPath->BaseObject.hHmgr);
return NULL;
}
srcpt += 2;
break;
}
}
TRACE("PATH_FlattenPath good\n");
newPath->state = pPath->state;
return newPath;
}
/* PATH_PathToRegion
*
* Fills Rgn from the specified path using the specified polygon
* filling mode. The path is left unchanged.
*/
BOOL
FASTCALL
PATH_PathToRegion(
PPATH pPath,
INT Mode,
PREGION Rgn)
{
int i, pos, polygons;
PULONG counts;
int Ret;
if (!pPath->numEntriesUsed) return FALSE;
counts = ExAllocatePoolWithTag(PagedPool, (pPath->numEntriesUsed / 2) * sizeof(*counts), TAG_PATH);
if (!counts)
{
ERR("Failed to allocate %lu strokes\n", (pPath->numEntriesUsed / 2) * sizeof(*counts));
EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
return FALSE;
}
pos = polygons = 0;
ASSERT( pPath->pFlags[0] == PT_MOVETO );
for (i = 1; i < pPath->numEntriesUsed; i++)
{
if (pPath->pFlags[i] != PT_MOVETO) continue;
counts[polygons++] = i - pos;
pos = i;
}
if (i > pos + 1) counts[polygons++] = i - pos;
ASSERT( polygons <= pPath->numEntriesUsed / 2 );
/* Fill the region with the strokes */
Ret = REGION_SetPolyPolygonRgn(Rgn,
pPath->pPoints,
counts,
polygons,
Mode);
if (!Ret)
{
ERR("REGION_SetPolyPolygonRgn failed\n");
}
ExFreePoolWithTag(counts, TAG_PATH);
/* Success! */
return Ret;
}
/* PATH_FillPath
*
* You can play with this as long as you like, but if you break Area.exe the purge will Begain on Path!!!
*
*/
BOOL
FASTCALL
PATH_FillPath(
PDC dc,
PPATH pPath)
{
return PATH_FillPathEx(dc, pPath, NULL);
}
BOOL
FASTCALL
PATH_FillPathEx(
PDC dc,
PPATH pPath,
PBRUSH pbrFill)
{
INT mapMode, graphicsMode;
SIZE ptViewportExt, ptWindowExt;
POINTL ptViewportOrg, ptWindowOrg;
XFORML xform;
PREGION Rgn;
PDC_ATTR pdcattr = dc->pdcattr;
/* Allocate a temporary region */
Rgn = IntSysCreateRectpRgn(0, 0, 0, 0);
if (!Rgn)
{
EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
return FALSE;
}
if (!PATH_PathToRegion(pPath, pdcattr->jFillMode, Rgn))
{
TRACE("PFP : Fail P2R\n");
/* EngSetLastError ? */
REGION_Delete(Rgn);
return FALSE;
}
/* Since PaintRgn interprets the region as being in logical coordinates
* but the points we store for the path are already in device
* coordinates, we have to set the mapping mode to MM_TEXT temporarily.
* Using SaveDC to save information about the mapping mode / world
* transform would be easier but would require more overhead, especially
* now that SaveDC saves the current path.
*/
/* Save the information about the old mapping mode */
mapMode = pdcattr->iMapMode;
ptViewportExt = pdcattr->szlViewportExt;
ptViewportOrg = pdcattr->ptlViewportOrg;
ptWindowExt = pdcattr->szlWindowExt;
ptWindowOrg = pdcattr->ptlWindowOrg;
/* Save world transform
* NB: The Windows documentation on world transforms would lead one to
* believe that this has to be done only in GM_ADVANCED; however, my
* tests show that resetting the graphics mode to GM_COMPATIBLE does
* not reset the world transform.
*/
MatrixS2XForm(&xform, &dc->pdcattr->mxWorldToPage);
/* Set MM_TEXT */
IntGdiSetMapMode(dc, MM_TEXT);
pdcattr->ptlViewportOrg.x = 0;
pdcattr->ptlViewportOrg.y = 0;
pdcattr->ptlWindowOrg.x = 0;
pdcattr->ptlWindowOrg.y = 0;
graphicsMode = pdcattr->iGraphicsMode;
pdcattr->iGraphicsMode = GM_ADVANCED;
GreModifyWorldTransform(dc, &xform, MWT_IDENTITY);
pdcattr->iGraphicsMode = graphicsMode;
/* Paint the region */
IntGdiFillRgn(dc, Rgn, pbrFill);
REGION_Delete(Rgn);
/* Restore the old mapping mode */
IntGdiSetMapMode(dc, mapMode);
pdcattr->szlViewportExt = ptViewportExt;
pdcattr->ptlViewportOrg = ptViewportOrg;
pdcattr->szlWindowExt = ptWindowExt;
pdcattr->ptlWindowOrg = ptWindowOrg;
/* Go to GM_ADVANCED temporarily to restore the world transform */
graphicsMode = pdcattr->iGraphicsMode;
pdcattr->iGraphicsMode = GM_ADVANCED;
GreModifyWorldTransform(dc, &xform, MWT_SET);
pdcattr->iGraphicsMode = graphicsMode;
return TRUE;
}
BOOL
FASTCALL
PATH_StrokePath(
DC *dc,
PPATH pPath)
{
BOOL ret = FALSE;
INT nLinePts, nAlloc, jOldFillMode, i = 0;
POINT *pLinePts = NULL;
POINT ptViewportOrg, ptWindowOrg;
SIZE szViewportExt, szWindowExt;
DWORD mapMode, graphicsMode;
XFORM xform;
PDC_ATTR pdcattr = dc->pdcattr;
PBRUSH pbrLine;
PPATH pNewPath;
TRACE("Enter %s\n", __FUNCTION__);
pbrLine = dc->dclevel.pbrLine;
if (IntIsEffectiveWidePen(pbrLine))
{
pNewPath = PATH_WidenPathEx(dc, pPath);
if (pNewPath)
{
/* Fill the path with the WINDING fill mode */
jOldFillMode = pdcattr->jFillMode;
pdcattr->jFillMode = WINDING;
PATH_FillPathEx(dc, pNewPath, pbrLine);
pdcattr->jFillMode = jOldFillMode;
PATH_Delete(pNewPath->BaseObject.hHmgr);
return TRUE;
}
}
/* Save the mapping mode info */
mapMode = pdcattr->iMapMode;
szViewportExt = *DC_pszlViewportExt(dc);
ptViewportOrg = dc->pdcattr->ptlViewportOrg;
szWindowExt = dc->pdcattr->szlWindowExt;
ptWindowOrg = dc->pdcattr->ptlWindowOrg;
MatrixS2XForm(&xform, &dc->pdcattr->mxWorldToPage);
/* Set MM_TEXT */
pdcattr->iMapMode = MM_TEXT;
pdcattr->ptlViewportOrg.x = 0;
pdcattr->ptlViewportOrg.y = 0;
pdcattr->ptlWindowOrg.x = 0;
pdcattr->ptlWindowOrg.y = 0;
graphicsMode = pdcattr->iGraphicsMode;
pdcattr->iGraphicsMode = GM_ADVANCED;
GreModifyWorldTransform(dc, (XFORML*)&xform, MWT_IDENTITY);
pdcattr->iGraphicsMode = graphicsMode;
/* Allocate enough memory for the worst case without beziers (one PT_MOVETO
* and the rest PT_LINETO with PT_CLOSEFIGURE at the end) plus some buffer
* space in case we get one to keep the number of reallocations small. */
nAlloc = pPath->numEntriesUsed + 1 + 300;
pLinePts = ExAllocatePoolWithTag(PagedPool, nAlloc * sizeof(POINT), TAG_PATH);
if (!pLinePts)
{
ERR("Can't allocate pool!\n");
EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
goto end;
}
nLinePts = 0;
for (i = 0; i < pPath->numEntriesUsed; i++)
{
if ((i == 0 || (pPath->pFlags[i - 1] & PT_CLOSEFIGURE))
&& (pPath->pFlags[i] != PT_MOVETO))
{
ERR("Expected PT_MOVETO %s, got path flag %d\n",
i == 0 ? "as first point" : "after PT_CLOSEFIGURE",
(INT)pPath->pFlags[i]);
goto end;
}
switch(pPath->pFlags[i])
{
case PT_MOVETO:
TRACE("Got PT_MOVETO (%ld, %ld)\n",
pPath->pPoints[i].x, pPath->pPoints[i].y);
if (nLinePts >= 2) IntGdiPolyline(dc, pLinePts, nLinePts);
nLinePts = 0;
pLinePts[nLinePts++] = pPath->pPoints[i];
break;
case PT_LINETO:
case (PT_LINETO | PT_CLOSEFIGURE):
TRACE("Got PT_LINETO (%ld, %ld)\n",
pPath->pPoints[i].x, pPath->pPoints[i].y);
pLinePts[nLinePts++] = pPath->pPoints[i];
break;
case PT_BEZIERTO:
TRACE("Got PT_BEZIERTO\n");
if (pPath->pFlags[i + 1] != PT_BEZIERTO ||
(pPath->pFlags[i + 2] & ~PT_CLOSEFIGURE) != PT_BEZIERTO)
{
ERR("Path didn't contain 3 successive PT_BEZIERTOs\n");
ret = FALSE;
goto end;
}
else
{
INT nBzrPts, nMinAlloc;
POINT *pBzrPts = GDI_Bezier(&pPath->pPoints[i - 1], 4, &nBzrPts);
/* Make sure we have allocated enough memory for the lines of
* this bezier and the rest of the path, assuming we won't get
* another one (since we won't reallocate again then). */
nMinAlloc = nLinePts + (pPath->numEntriesUsed - i) + nBzrPts;
if (nAlloc < nMinAlloc)
{
// Reallocate memory
POINT *Realloc = NULL;
nAlloc = nMinAlloc * 2;
Realloc = ExAllocatePoolWithTag(PagedPool,
nAlloc * sizeof(POINT),
TAG_PATH);
if (!Realloc)
{
ERR("Can't allocate pool!\n");
ExFreePoolWithTag(pBzrPts, TAG_BEZIER);
goto end;
}
memcpy(Realloc, pLinePts, nLinePts * sizeof(POINT));
ExFreePoolWithTag(pLinePts, TAG_PATH);
pLinePts = Realloc;
}
memcpy(&pLinePts[nLinePts], &pBzrPts[1], (nBzrPts - 1) * sizeof(POINT));
nLinePts += nBzrPts - 1;
ExFreePoolWithTag(pBzrPts, TAG_BEZIER);
i += 2;
}
break;
default:
ERR("Got path flag %d (not supported)\n", (INT)pPath->pFlags[i]);
goto end;
}
if (pPath->pFlags[i] & PT_CLOSEFIGURE)
{
pLinePts[nLinePts++] = pLinePts[0];
}
}
if (nLinePts >= 2)
IntGdiPolyline(dc, pLinePts, nLinePts);
ret = TRUE;
end:
if (pLinePts) ExFreePoolWithTag(pLinePts, TAG_PATH);
/* Restore the old mapping mode */
pdcattr->iMapMode = mapMode;
pdcattr->szlWindowExt.cx = szWindowExt.cx;
pdcattr->szlWindowExt.cy = szWindowExt.cy;
pdcattr->ptlWindowOrg.x = ptWindowOrg.x;
pdcattr->ptlWindowOrg.y = ptWindowOrg.y;
pdcattr->szlViewportExt.cx = szViewportExt.cx;
pdcattr->szlViewportExt.cy = szViewportExt.cy;
pdcattr->ptlViewportOrg.x = ptViewportOrg.x;
pdcattr->ptlViewportOrg.y = ptViewportOrg.y;
/* Restore the world transform */
XForm2MatrixS(&dc->pdcattr->mxWorldToPage, &xform);
/* If we've moved the current point then get its new position
which will be in device (MM_TEXT) co-ords, convert it to
logical co-ords and re-set it. This basically updates
dc->CurPosX|Y so that their values are in the correct mapping
mode.
*/
if (i > 0)
{
POINT pt;
IntGetCurrentPositionEx(dc, &pt);
IntDPtoLP(dc, &pt, 1);
IntGdiMoveToEx(dc, pt.x, pt.y, NULL);
}
TRACE("Leave %s, ret=%d\n", __FUNCTION__, ret);
return ret;
}
#define round(x) ((int)((x)>0?(x)+0.5:(x)-0.5))
PPATH FASTCALL
IntGdiWidenPath(PPATH pPath, UINT penWidth, UINT penStyle, FLOAT eMiterLimit)
{
INT i, j, numStrokes, numOldStrokes, penWidthIn, penWidthOut;
PPATH flat_path, pNewPath, *pStrokes = NULL, *pOldStrokes, pUpPath, pDownPath;
BYTE *type;
DWORD joint, endcap;
endcap = (PS_ENDCAP_MASK & penStyle);
joint = (PS_JOIN_MASK & penStyle);
if (!(flat_path = PATH_FlattenPath(pPath)))
{
ERR("PATH_FlattenPath\n");
return NULL;
}
penWidthIn = penWidth / 2;
penWidthOut = penWidth / 2;
if (penWidthIn + penWidthOut < penWidth)
penWidthOut++;
numStrokes = 0;
for (i = 0, j = 0; i < flat_path->numEntriesUsed; i++, j++)
{
POINT point;
if ((i == 0 || (flat_path->pFlags[i - 1] & PT_CLOSEFIGURE)) &&
(flat_path->pFlags[i] != PT_MOVETO))
{
ERR("Expected PT_MOVETO %s, got path flag %c\n",
i == 0 ? "as first point" : "after PT_CLOSEFIGURE",
flat_path->pFlags[i]);
if (pStrokes)
ExFreePoolWithTag(pStrokes, TAG_PATH);
PATH_UnlockPath(flat_path);
PATH_Delete(flat_path->BaseObject.hHmgr);
return NULL;
}
switch(flat_path->pFlags[i])
{
case PT_MOVETO:
if (numStrokes > 0)
{
pStrokes[numStrokes - 1]->state = PATH_Closed;
}
numOldStrokes = numStrokes;
numStrokes++;
j = 0;
if (numStrokes == 1)
pStrokes = ExAllocatePoolWithTag(PagedPool, sizeof(*pStrokes), TAG_PATH);
else
{
pOldStrokes = pStrokes; // Save old pointer.
pStrokes = ExAllocatePoolWithTag(PagedPool, numStrokes * sizeof(*pStrokes), TAG_PATH);
if (!pStrokes)
{
ExFreePoolWithTag(pOldStrokes, TAG_PATH);
PATH_UnlockPath(flat_path);
PATH_Delete(flat_path->BaseObject.hHmgr);
return NULL;
}
RtlCopyMemory(pStrokes, pOldStrokes, numOldStrokes * sizeof(PPATH));
ExFreePoolWithTag(pOldStrokes, TAG_PATH); // Free old pointer.
}
if (!pStrokes)
{
PATH_UnlockPath(flat_path);
PATH_Delete(flat_path->BaseObject.hHmgr);
return NULL;
}
pStrokes[numStrokes - 1] = ExAllocatePoolWithTag(PagedPool, sizeof(PATH), TAG_PATH);
if (!pStrokes[numStrokes - 1])
{
ASSERT(FALSE); // FIXME
}
PATH_InitGdiPath(pStrokes[numStrokes - 1]);
pStrokes[numStrokes - 1]->state = PATH_Open;
case PT_LINETO:
case (PT_LINETO | PT_CLOSEFIGURE):
point.x = flat_path->pPoints[i].x;
point.y = flat_path->pPoints[i].y;
PATH_AddEntry(pStrokes[numStrokes - 1], &point, flat_path->pFlags[i]);
break;
case PT_BEZIERTO:
/* Should never happen because of the FlattenPath call */
ERR("Should never happen\n");
break;
default:
ERR("Got path flag %c\n", flat_path->pFlags[i]);
if (pStrokes)
ExFreePoolWithTag(pStrokes, TAG_PATH);
PATH_UnlockPath(flat_path);
PATH_Delete(flat_path->BaseObject.hHmgr);
return NULL;
}
}
pNewPath = PATH_CreatePath( flat_path->numEntriesUsed );
for (i = 0; i < numStrokes; i++)
{
pUpPath = ExAllocatePoolWithTag(PagedPool, sizeof(PATH), TAG_PATH);
PATH_InitGdiPath(pUpPath);
pUpPath->state = PATH_Open;
pDownPath = ExAllocatePoolWithTag(PagedPool, sizeof(PATH), TAG_PATH);
PATH_InitGdiPath(pDownPath);
pDownPath->state = PATH_Open;
for (j = 0; j < pStrokes[i]->numEntriesUsed; j++)
{
/* Beginning or end of the path if not closed */
if ((!(pStrokes[i]->pFlags[pStrokes[i]->numEntriesUsed - 1] & PT_CLOSEFIGURE)) && (j == 0 || j == pStrokes[i]->numEntriesUsed - 1))
{
/* Compute segment angle */
INT xo, yo, xa, ya;
double theta;
POINT pt;
POINT corners[2];
if (j == 0)
{
xo = pStrokes[i]->pPoints[j].x;
yo = pStrokes[i]->pPoints[j].y;
xa = pStrokes[i]->pPoints[1].x;
ya = pStrokes[i]->pPoints[1].y;
}
else
{
xa = pStrokes[i]->pPoints[j - 1].x;
ya = pStrokes[i]->pPoints[j - 1].y;
xo = pStrokes[i]->pPoints[j].x;
yo = pStrokes[i]->pPoints[j].y;
}
theta = atan2(ya - yo, xa - xo);
switch(endcap)
{
case PS_ENDCAP_SQUARE :
pt.x = xo + round(sqrt(2) * penWidthOut * cos(M_PI_4 + theta));
pt.y = yo + round(sqrt(2) * penWidthOut * sin(M_PI_4 + theta));
PATH_AddEntry(pUpPath, &pt, (j == 0 ? PT_MOVETO : PT_LINETO));
pt.x = xo + round(sqrt(2) * penWidthIn * cos(- M_PI_4 + theta));
pt.y = yo + round(sqrt(2) * penWidthIn * sin(- M_PI_4 + theta));
PATH_AddEntry(pUpPath, &pt, PT_LINETO);
break;
case PS_ENDCAP_FLAT :
pt.x = xo + round(penWidthOut * cos(theta + M_PI_2));
pt.y = yo + round(penWidthOut * sin(theta + M_PI_2));
PATH_AddEntry(pUpPath, &pt, (j == 0 ? PT_MOVETO : PT_LINETO));
pt.x = xo - round(penWidthIn * cos(theta + M_PI_2));
pt.y = yo - round(penWidthIn * sin(theta + M_PI_2));
PATH_AddEntry(pUpPath, &pt, PT_LINETO);
break;
case PS_ENDCAP_ROUND :
default :
corners[0].x = xo - penWidthIn;
corners[0].y = yo - penWidthIn;
corners[1].x = xo + penWidthOut;
corners[1].y = yo + penWidthOut;
PATH_DoArcPart(pUpPath , corners, theta + M_PI_2 , theta + 3 * M_PI_4, (j == 0 ? PT_MOVETO : FALSE));
PATH_DoArcPart(pUpPath , corners, theta + 3 * M_PI_4 , theta + M_PI, FALSE);
PATH_DoArcPart(pUpPath , corners, theta + M_PI, theta + 5 * M_PI_4, FALSE);
PATH_DoArcPart(pUpPath , corners, theta + 5 * M_PI_4 , theta + 3 * M_PI_2, FALSE);
break;
}
}
/* Corpse of the path */
else
{
/* Compute angle */
INT previous, next;
double xa, ya, xb, yb, xo, yo;
double alpha, theta, miterWidth;
DWORD _joint = joint;
POINT pt;
PPATH pInsidePath, pOutsidePath;
if (j > 0 && j < pStrokes[i]->numEntriesUsed - 1)
{
previous = j - 1;
next = j + 1;
}
else if (j == 0)
{
previous = pStrokes[i]->numEntriesUsed - 1;
next = j + 1;
}
else
{
previous = j - 1;
next = 0;
}
xo = pStrokes[i]->pPoints[j].x;
yo = pStrokes[i]->pPoints[j].y;
xa = pStrokes[i]->pPoints[previous].x;
ya = pStrokes[i]->pPoints[previous].y;
xb = pStrokes[i]->pPoints[next].x;
yb = pStrokes[i]->pPoints[next].y;
theta = atan2(yo - ya, xo - xa);
alpha = atan2(yb - yo, xb - xo) - theta;
if (alpha > 0) alpha -= M_PI;
else alpha += M_PI;
if (_joint == PS_JOIN_MITER && eMiterLimit < fabs(1 / sin(alpha / 2)))
{
_joint = PS_JOIN_BEVEL;
}
if (alpha > 0)
{
pInsidePath = pUpPath;
pOutsidePath = pDownPath;
}
else if (alpha < 0)
{
pInsidePath = pDownPath;
pOutsidePath = pUpPath;
}
else
{
continue;
}
/* Inside angle points */
if (alpha > 0)
{
pt.x = xo - round(penWidthIn * cos(theta + M_PI_2));
pt.y = yo - round(penWidthIn * sin(theta + M_PI_2));
}
else
{
pt.x = xo + round(penWidthIn * cos(theta + M_PI_2));
pt.y = yo + round(penWidthIn * sin(theta + M_PI_2));
}
PATH_AddEntry(pInsidePath, &pt, PT_LINETO);
if (alpha > 0)
{
pt.x = xo + round(penWidthIn * cos(M_PI_2 + alpha + theta));
pt.y = yo + round(penWidthIn * sin(M_PI_2 + alpha + theta));
}
else
{
pt.x = xo - round(penWidthIn * cos(M_PI_2 + alpha + theta));
pt.y = yo - round(penWidthIn * sin(M_PI_2 + alpha + theta));
}
PATH_AddEntry(pInsidePath, &pt, PT_LINETO);
/* Outside angle point */
switch(_joint)
{
case PS_JOIN_MITER :
miterWidth = fabs(penWidthOut / cos(M_PI_2 - fabs(alpha) / 2));
pt.x = xo + round(miterWidth * cos(theta + alpha / 2));
pt.y = yo + round(miterWidth * sin(theta + alpha / 2));
PATH_AddEntry(pOutsidePath, &pt, PT_LINETO);
break;
case PS_JOIN_BEVEL :
if (alpha > 0)
{
pt.x = xo + round(penWidthOut * cos(theta + M_PI_2));
pt.y = yo + round(penWidthOut * sin(theta + M_PI_2));
}
else
{
pt.x = xo - round(penWidthOut * cos(theta + M_PI_2));
pt.y = yo - round(penWidthOut * sin(theta + M_PI_2));
}
PATH_AddEntry(pOutsidePath, &pt, PT_LINETO);
if (alpha > 0)
{
pt.x = xo - round(penWidthOut * cos(M_PI_2 + alpha + theta));
pt.y = yo - round(penWidthOut * sin(M_PI_2 + alpha + theta));
}
else
{
pt.x = xo + round(penWidthOut * cos(M_PI_2 + alpha + theta));
pt.y = yo + round(penWidthOut * sin(M_PI_2 + alpha + theta));
}
PATH_AddEntry(pOutsidePath, &pt, PT_LINETO);
break;
case PS_JOIN_ROUND :
default :
if (alpha > 0)
{
pt.x = xo + round(penWidthOut * cos(theta + M_PI_2));
pt.y = yo + round(penWidthOut * sin(theta + M_PI_2));
}
else
{
pt.x = xo - round(penWidthOut * cos(theta + M_PI_2));
pt.y = yo - round(penWidthOut * sin(theta + M_PI_2));
}
PATH_AddEntry(pOutsidePath, &pt, PT_BEZIERTO);
pt.x = xo + round(penWidthOut * cos(theta + alpha / 2));
pt.y = yo + round(penWidthOut * sin(theta + alpha / 2));
PATH_AddEntry(pOutsidePath, &pt, PT_BEZIERTO);
if (alpha > 0)
{
pt.x = xo - round(penWidthOut * cos(M_PI_2 + alpha + theta));
pt.y = yo - round(penWidthOut * sin(M_PI_2 + alpha + theta));
}
else
{
pt.x = xo + round(penWidthOut * cos(M_PI_2 + alpha + theta));
pt.y = yo + round(penWidthOut * sin(M_PI_2 + alpha + theta));
}
PATH_AddEntry(pOutsidePath, &pt, PT_BEZIERTO);
break;
}
}
}
type = add_points( pNewPath, pUpPath->pPoints, pUpPath->numEntriesUsed, PT_LINETO );
type[0] = PT_MOVETO;
reverse_points( pDownPath->pPoints, pDownPath->numEntriesUsed );
type = add_points( pNewPath, pDownPath->pPoints, pDownPath->numEntriesUsed, PT_LINETO );
if (pStrokes[i]->pFlags[pStrokes[i]->numEntriesUsed - 1] & PT_CLOSEFIGURE) type[0] = PT_MOVETO;
PATH_DestroyGdiPath(pStrokes[i]);
ExFreePoolWithTag(pStrokes[i], TAG_PATH);
PATH_DestroyGdiPath(pUpPath);
ExFreePoolWithTag(pUpPath, TAG_PATH);
PATH_DestroyGdiPath(pDownPath);
ExFreePoolWithTag(pDownPath, TAG_PATH);
}
if (pStrokes) ExFreePoolWithTag(pStrokes, TAG_PATH);
PATH_UnlockPath(flat_path);
PATH_Delete(flat_path->BaseObject.hHmgr);
pNewPath->state = PATH_Closed;
PATH_UnlockPath(pNewPath);
return pNewPath;
}
static
PPATH
FASTCALL
PATH_WidenPath(DC *dc)
{
PPATH pPath, pNewPath;
pPath = PATH_LockPath(dc->dclevel.hPath);
if (!pPath)
{
EngSetLastError( ERROR_CAN_NOT_COMPLETE );
return NULL;
}
pNewPath = PATH_WidenPathEx(dc, pPath);
PATH_UnlockPath(pPath);
return pNewPath;
}
PPATH
FASTCALL
PATH_WidenPathEx(DC *dc, PPATH pPath)
{
INT size;
UINT penWidth, penStyle;
DWORD obj_type;
LPEXTLOGPEN elp;
PDC_ATTR pdcattr = dc->pdcattr;
if (pPath->state != PATH_Closed)
{
TRACE("PWP 1\n");
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
return NULL;
}
size = GreGetObject(pdcattr->hpen, 0, NULL);
if (!size)
{
TRACE("PWP 2\n");
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
return NULL;
}
elp = ExAllocatePoolWithTag(PagedPool, size, TAG_PATH);
if (elp == NULL)
{
TRACE("PWP 3\n");
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
{
TRACE("PWP 4\n");
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
ExFreePoolWithTag(elp, TAG_PATH);
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)
{
TRACE("PWP 5\n");
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
return FALSE;
}
return IntGdiWidenPath(pPath, penWidth, penStyle, dc->dclevel.laPath.eMiterLimit);
}
static inline INT int_from_fixed(FIXED f)
{
return (f.fract >= 0x8000) ? (f.value + 1) : f.value;
}
/**********************************************************************
* PATH_BezierTo
*
* Internally used by PATH_add_outline
*/
static
VOID
FASTCALL
PATH_BezierTo(
PPATH pPath,
POINT *lppt,
INT n)
{
if (n < 2) return;
if (n == 2)
{
PATH_AddEntry(pPath, &lppt[1], PT_LINETO);
}
else if (n == 3)
{
add_points( pPath, lppt, 3, PT_BEZIERTO );
}
else
{
POINT pt[3];
INT i = 0;
pt[2] = lppt[0];
n--;
while (n > 2)
{
pt[0] = pt[2];
pt[1] = lppt[i + 1];
pt[2].x = (lppt[i + 2].x + lppt[i + 1].x) / 2;
pt[2].y = (lppt[i + 2].y + lppt[i + 1].y) / 2;
add_points( pPath, pt, 3, PT_BEZIERTO );
n--;
i++;
}
pt[0] = pt[2];
pt[1] = lppt[i + 1];
pt[2] = lppt[i + 2];
add_points( pPath, pt, 3, PT_BEZIERTO );
}
}
static
BOOL
FASTCALL
PATH_add_outline(
PDC dc,
PPATH pPath,
INT x,
INT y,
TTPOLYGONHEADER *header,
DWORD size)
{
TTPOLYGONHEADER *start;
POINT pt;
BOOL bResult = FALSE;
start = header;
while ((char *)header < (char *)start + size)
{
TTPOLYCURVE *curve;
if (header->dwType != TT_POLYGON_TYPE)
{
ERR("Unknown header type %lu\n", header->dwType);
goto cleanup;
}
pt.x = x + int_from_fixed(header->pfxStart.x);
pt.y = y - int_from_fixed(header->pfxStart.y);
PATH_AddEntry(pPath, &pt, PT_MOVETO);
curve = (TTPOLYCURVE *)(header + 1);
while ((char *)curve < (char *)header + header->cb)
{
TRACE("curve->wType %d\n", curve->wType);
switch(curve->wType)
{
case TT_PRIM_LINE:
{
WORD i;
for (i = 0; i < curve->cpfx; i++)
{
pt.x = x + int_from_fixed(curve->apfx[i].x);
pt.y = y - int_from_fixed(curve->apfx[i].y);
PATH_AddEntry(pPath, &pt, PT_LINETO);
}
break;
}
case TT_PRIM_QSPLINE:
case TT_PRIM_CSPLINE:
{
WORD i;
POINTFX ptfx;
POINT *pts = ExAllocatePoolWithTag(PagedPool, (curve->cpfx + 1) * sizeof(POINT), TAG_PATH);
if (!pts) goto cleanup;
ptfx = *(POINTFX *)((char *)curve - sizeof(POINTFX));
pts[0].x = x + int_from_fixed(ptfx.x);
pts[0].y = y - int_from_fixed(ptfx.y);
for (i = 0; i < curve->cpfx; i++)
{
pts[i + 1].x = x + int_from_fixed(curve->apfx[i].x);
pts[i + 1].y = y - int_from_fixed(curve->apfx[i].y);
}
PATH_BezierTo(pPath, pts, curve->cpfx + 1);
ExFreePoolWithTag(pts, TAG_PATH);
break;
}
default:
ERR("Unknown curve type %04x\n", curve->wType);
goto cleanup;
}
curve = (TTPOLYCURVE *)&curve->apfx[curve->cpfx];
}
header = (TTPOLYGONHEADER *)((char *)header + header->cb);
}
bResult = TRUE;
cleanup:
IntGdiCloseFigure(pPath);
return bResult;
}
/**********************************************************************
* PATH_ExtTextOut
*/
BOOL
FASTCALL
PATH_ExtTextOut(
PDC dc,
INT x,
INT y,
UINT flags,
const RECTL *lprc,
LPCWSTR str,
UINT count,
const INT *dx)
{
PPATH pPath;
unsigned int idx, ggo_flags = GGO_NATIVE;
POINT offset = {0, 0};
pPath = PATH_LockPath(dc->dclevel.hPath);
if (!pPath)
{
return FALSE;
}
if (pPath->state != PATH_Open)
{
ERR("PATH_ExtTextOut not open\n");
return FALSE;
}
if (!count) return TRUE;
if (flags & ETO_GLYPH_INDEX) ggo_flags |= GGO_GLYPH_INDEX;
for (idx = 0; idx < count; idx++)
{
MAT2 identity = { {0, 1}, {0, 0}, {0, 0}, {0, 1} };
GLYPHMETRICS gm;
DWORD dwSize;
void *outline;
dwSize = ftGdiGetGlyphOutline(dc,
str[idx],
ggo_flags,
&gm,
0,
NULL,
&identity,
TRUE);
if (dwSize == GDI_ERROR)
{
// With default DC font,,, bitmap font?
// ExtTextOut on a path with bitmap font selected shouldn't fail.
// This just leads to empty path generated.
// Ref : test_emf_ExtTextOut_on_path
continue;
}
/* Add outline only if char is printable */
if (dwSize)
{
outline = ExAllocatePoolWithTag(PagedPool, dwSize, TAG_PATH);
if (!outline)
{
PATH_UnlockPath(pPath);
return FALSE;
}
ftGdiGetGlyphOutline(dc,
str[idx],
ggo_flags,
&gm,
dwSize,
outline,
&identity,
TRUE);
PATH_add_outline(dc, pPath, x + offset.x, y + offset.y, outline, dwSize);
ExFreePoolWithTag(outline, TAG_PATH);
}
if (dx)
{
if (flags & ETO_PDY)
{
offset.x += dx[idx * 2];
offset.y += dx[idx * 2 + 1];
}
else
offset.x += dx[idx];
}
else
{
offset.x += gm.gmCellIncX;
offset.y += gm.gmCellIncY;
}
}
PATH_UnlockPath(pPath);
return TRUE;
}
/***********************************************************************
* Exported functions
*/
BOOL
APIENTRY
NtGdiAbortPath(HDC hDC)
{
PDC dc = DC_LockDc(hDC);
if (!dc)
{
EngSetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
if (!dc->dclevel.hPath)
{
DC_UnlockDc(dc);
return TRUE;
}
if (!PATH_Delete(dc->dclevel.hPath))
{
DC_UnlockDc(dc);
return FALSE;
}
dc->dclevel.hPath = 0;
dc->dclevel.flPath &= ~DCPATH_ACTIVE;
DC_UnlockDc(dc);
return TRUE;
}
BOOL
APIENTRY
NtGdiBeginPath(HDC hDC)
{
PPATH pPath;
PDC dc;
dc = DC_LockDc(hDC);
if (!dc)
{
EngSetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
/* If path is already open, do nothing. Check if not Save DC state */
if ((dc->dclevel.flPath & DCPATH_ACTIVE) && !(dc->dclevel.flPath & DCPATH_SAVE))
{
DC_UnlockDc(dc);
return TRUE;
}
if (dc->dclevel.hPath)
{
TRACE("BeginPath 1 0x%p\n", dc->dclevel.hPath);
if (!(dc->dclevel.flPath & DCPATH_SAVE))
{
// Remove previous handle.
if (!PATH_Delete(dc->dclevel.hPath))
{
DC_UnlockDc(dc);
return FALSE;
}
}
else
{
// Clear flags and Handle.
dc->dclevel.flPath &= ~(DCPATH_SAVE | DCPATH_ACTIVE);
dc->dclevel.hPath = NULL;
}
}
pPath = PATH_CreatePath(NUM_ENTRIES_INITIAL);
dc->dclevel.flPath |= DCPATH_ACTIVE; // Set active ASAP!
dc->dclevel.hPath = pPath->BaseObject.hHmgr;
IntGetCurrentPositionEx(dc, &pPath->pos);
IntLPtoDP( dc, &pPath->pos, 1 );
TRACE("BP : Current pos X %d Y %d\n",pPath->pos.x, pPath->pos.y);
PATH_UnlockPath(pPath);
DC_UnlockDc(dc);
if (!pPath)
{
return FALSE;
}
return TRUE;
}
BOOL
APIENTRY
NtGdiCloseFigure(HDC hDC)
{
BOOL Ret = FALSE; // Default to failure
PDC pDc;
PPATH pPath;
TRACE("Enter %s\n", __FUNCTION__);
pDc = DC_LockDc(hDC);
if (!pDc)
{
EngSetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
pPath = PATH_LockPath(pDc->dclevel.hPath);
if (!pPath)
{
DC_UnlockDc(pDc);
return FALSE;
}
if (pPath->state == PATH_Open)
{
IntGdiCloseFigure(pPath);
Ret = TRUE;
}
else
{
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
}
PATH_UnlockPath(pPath);
DC_UnlockDc(pDc);
return Ret;
}
BOOL
APIENTRY
NtGdiEndPath(HDC hDC)
{
BOOL ret = TRUE;
PPATH pPath;
PDC dc;
dc = DC_LockDc(hDC);
if (!dc)
{
EngSetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
pPath = PATH_LockPath(dc->dclevel.hPath);
if (!pPath)
{
DC_UnlockDc(dc);
return FALSE;
}
/* Check that path is currently being constructed */
if ((pPath->state != PATH_Open) || !(dc->dclevel.flPath & DCPATH_ACTIVE))
{
TRACE("EndPath ERROR! 0x%p\n", dc->dclevel.hPath);
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
ret = FALSE;
}
/* Set flag to indicate that path is finished */
else
{
TRACE("EndPath 0x%p\n", dc->dclevel.hPath);
pPath->state = PATH_Closed;
dc->dclevel.flPath &= ~DCPATH_ACTIVE;
}
PATH_UnlockPath(pPath);
DC_UnlockDc(dc);
return ret;
}
BOOL
APIENTRY
NtGdiFillPath(HDC hDC)
{
BOOL ret = FALSE;
PPATH pPath, pNewPath;
PDC_ATTR pdcattr;
PDC dc;
dc = DC_LockDc(hDC);
if (!dc)
{
EngSetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
pPath = PATH_LockPath(dc->dclevel.hPath);
if (!pPath)
{
DC_UnlockDc(dc);
return FALSE;
}
DC_vPrepareDCsForBlit(dc, NULL, NULL, NULL);
pdcattr = dc->pdcattr;
if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
DC_vUpdateLineBrush(dc);
if (pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
DC_vUpdateFillBrush(dc);
pNewPath = PATH_FlattenPath(pPath);
if (pNewPath->state != PATH_Closed)
{
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
}
else if (pNewPath->numEntriesUsed)
{
ret = PATH_FillPath(dc, pNewPath);
}
else ret = TRUE;
PATH_UnlockPath(pNewPath);
PATH_Delete(pNewPath->BaseObject.hHmgr);
PATH_UnlockPath(pPath);
PATH_Delete(pPath->BaseObject.hHmgr);
dc->dclevel.hPath = 0;
dc->dclevel.flPath &= ~DCPATH_ACTIVE;
DC_vFinishBlit(dc, NULL);
DC_UnlockDc(dc);
return ret;
}
BOOL
APIENTRY
NtGdiFlattenPath(HDC hDC)
{
BOOL Ret = FALSE;
DC *pDc;
PPATH pPath, pNewPath = NULL;
TRACE("Enter %s\n", __FUNCTION__);
pDc = DC_LockDc(hDC);
if (!pDc)
{
EngSetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
pPath = PATH_LockPath(pDc->dclevel.hPath);
if (!pPath)
{
EngSetLastError( ERROR_CAN_NOT_COMPLETE );
DC_UnlockDc(pDc);
return FALSE;
}
if (pPath->state == PATH_Closed)
{
pNewPath = PATH_FlattenPath(pPath);
}
PATH_UnlockPath(pPath);
if (pNewPath)
{
PATH_Delete(pDc->dclevel.hPath);
pDc->dclevel.hPath = pNewPath->BaseObject.hHmgr;
PATH_UnlockPath(pNewPath);
Ret = TRUE;
}
DC_UnlockDc(pDc);
return Ret;
}
_Success_(return != FALSE)
BOOL
APIENTRY
NtGdiGetMiterLimit(
_In_ HDC hdc,
_Out_ PDWORD pdwOut)
{
DC *pDc;
BOOL bResult = TRUE;
if (!(pDc = DC_LockDc(hdc)))
{
EngSetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
_SEH2_TRY
{
ProbeForWrite(pdwOut, sizeof(DWORD), 1);
*pdwOut = pDc->dclevel.laPath.eMiterLimit;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
SetLastNtError(_SEH2_GetExceptionCode());
bResult = FALSE;
}
_SEH2_END;
DC_UnlockDc(pDc);
return bResult;
}
INT
APIENTRY
NtGdiGetPath(
HDC hDC,
LPPOINT Points,
LPBYTE Types,
INT nSize)
{
INT ret = -1;
PPATH pPath;
DC *dc;
_SEH2_TRY
{
ProbeForWrite(Points, nSize * sizeof(*Points), sizeof(ULONG));
ProbeForWrite(Types, nSize, 1);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
SetLastNtError(_SEH2_GetExceptionCode());
_SEH2_YIELD(return -1);
}
_SEH2_END
dc = DC_LockDc(hDC);
TRACE("NtGdiGetPath start\n");
if (!dc)
{
ERR("Can't lock dc!\n");
EngSetLastError(ERROR_INVALID_PARAMETER);
return -1;
}
pPath = PATH_LockPath(dc->dclevel.hPath);
if (!pPath)
{
DC_UnlockDc(dc);
return -1;
}
if (pPath->state != PATH_Closed)
{
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
goto done;
}
if (nSize == 0)
{
ret = pPath->numEntriesUsed;
}
else if (nSize < pPath->numEntriesUsed)
{
EngSetLastError(ERROR_INVALID_PARAMETER);
goto done;
}
else
{
_SEH2_TRY
{
memcpy(Points, pPath->pPoints, sizeof(POINT)*pPath->numEntriesUsed);
memcpy(Types, pPath->pFlags, sizeof(BYTE)*pPath->numEntriesUsed);
/* Convert the points to logical coordinates */
if (!GdiPathDPtoLP(dc, Points, pPath->numEntriesUsed))
{
EngSetLastError(ERROR_ARITHMETIC_OVERFLOW);
_SEH2_LEAVE;
}
ret = pPath->numEntriesUsed;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
SetLastNtError(_SEH2_GetExceptionCode());
}
_SEH2_END
}
done:
TRACE("NtGdiGetPath exit %d\n",ret);
PATH_UnlockPath(pPath);
DC_UnlockDc(dc);
return ret;
}
HRGN
APIENTRY
NtGdiPathToRegion(HDC hDC)
{
PPATH pPath, pNewPath;
HRGN hrgnRval = 0;
int Ret;
PREGION Rgn;
DC *pDc;
PDC_ATTR pdcattr;
TRACE("Enter %s\n", __FUNCTION__);
pDc = DC_LockDc(hDC);
if (!pDc)
{
ERR("Failed to lock DC %p\n", hDC);
EngSetLastError(ERROR_INVALID_PARAMETER);
return NULL;
}
pdcattr = pDc->pdcattr;
pPath = PATH_LockPath(pDc->dclevel.hPath);
if (!pPath)
{
ERR("Failed to lock DC path %p\n", pDc->dclevel.hPath);
DC_UnlockDc(pDc);
return NULL;
}
if (pPath->state != PATH_Closed)
{
// FIXME: Check that setlasterror is being called correctly
ERR("Path is not closed!\n");
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
}
else
{
/* Create the region and fill it with the path strokes */
Rgn = REGION_AllocUserRgnWithHandle(1);
if (!Rgn)
{
ERR("Failed to allocate a region\n");
PATH_UnlockPath(pPath);
DC_UnlockDc(pDc);
return NULL;
}
hrgnRval = Rgn->BaseObject.hHmgr;
pNewPath = PATH_FlattenPath(pPath);
if (pNewPath == NULL)
{
ERR("Failed to flatten path %p\n", pDc->dclevel.hPath);
REGION_Delete(Rgn);
PATH_UnlockPath(pPath);
DC_UnlockDc(pDc);
return NULL;
}
Ret = PATH_PathToRegion(pNewPath, pdcattr->jFillMode, Rgn);
PATH_UnlockPath(pNewPath);
PATH_Delete(pNewPath->BaseObject.hHmgr);
if (!Ret)
{
ERR("PATH_PathToRegion failed\n");
REGION_Delete(Rgn);
hrgnRval = NULL;
}
else
REGION_UnlockRgn(Rgn);
}
PATH_UnlockPath(pPath);
PATH_Delete(pDc->dclevel.hPath);
pDc->dclevel.hPath = NULL;
pDc->dclevel.flPath &= ~DCPATH_ACTIVE;
DC_UnlockDc(pDc);
return hrgnRval;
}
BOOL
APIENTRY
NtGdiSetMiterLimit(
IN HDC hdc,
IN DWORD dwNew,
IN OUT OPTIONAL PDWORD pdwOut)
{
DC *pDc;
gxf_long worker, worker1;
BOOL bResult = TRUE;
if (!(pDc = DC_LockDc(hdc)))
{
EngSetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
worker.l = dwNew;
worker1.f = pDc->dclevel.laPath.eMiterLimit;
pDc->dclevel.laPath.eMiterLimit = worker.f;
if (pdwOut)
{
_SEH2_TRY
{
ProbeForWrite(pdwOut, sizeof(DWORD), 1);
*pdwOut = worker1.l;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
SetLastNtError(_SEH2_GetExceptionCode());
bResult = FALSE;
}
_SEH2_END;
}
DC_UnlockDc(pDc);
return bResult;
}
BOOL
APIENTRY
NtGdiStrokeAndFillPath(HDC hDC)
{
DC *pDc;
PDC_ATTR pdcattr;
PPATH pPath, pNewPath;
BOOL bRet = FALSE;
TRACE("Enter %s\n", __FUNCTION__);
if (!(pDc = DC_LockDc(hDC)))
{
EngSetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
pPath = PATH_LockPath(pDc->dclevel.hPath);
if (!pPath)
{
DC_UnlockDc(pDc);
return FALSE;
}
DC_vPrepareDCsForBlit(pDc, NULL, NULL, NULL);
pdcattr = pDc->pdcattr;
if (pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
DC_vUpdateFillBrush(pDc);
if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
DC_vUpdateLineBrush(pDc);
pNewPath = PATH_FlattenPath(pPath);
if (pNewPath->state != PATH_Closed)
{
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
}
else if (pNewPath->numEntriesUsed)
{
bRet = PATH_FillPath(pDc, pNewPath);
if (bRet) bRet = PATH_StrokePath(pDc, pNewPath);
}
else bRet = TRUE;
PATH_UnlockPath(pNewPath);
PATH_Delete(pNewPath->BaseObject.hHmgr);
PATH_UnlockPath(pPath);
PATH_Delete(pPath->BaseObject.hHmgr);
pDc->dclevel.hPath = 0;
pDc->dclevel.flPath &= ~DCPATH_ACTIVE;
DC_vFinishBlit(pDc, NULL);
DC_UnlockDc(pDc);
return bRet;
}
BOOL
APIENTRY
NtGdiStrokePath(HDC hDC)
{
DC *pDc;
PDC_ATTR pdcattr;
PPATH pPath, pNewPath;
BOOL bRet = FALSE;
TRACE("Enter %s\n", __FUNCTION__);
if (!(pDc = DC_LockDc(hDC)))
{
EngSetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
pPath = PATH_LockPath(pDc->dclevel.hPath);
if (!pPath)
{
DC_UnlockDc(pDc);
return FALSE;
}
DC_vPrepareDCsForBlit(pDc, NULL, NULL, NULL);
pdcattr = pDc->pdcattr;
if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
DC_vUpdateLineBrush(pDc);
pNewPath = PATH_FlattenPath(pPath);
if (pNewPath->state != PATH_Closed)
{
EngSetLastError(ERROR_CAN_NOT_COMPLETE);
}
else bRet = PATH_StrokePath(pDc, pNewPath);
PATH_UnlockPath(pNewPath);
PATH_Delete(pNewPath->BaseObject.hHmgr);
DC_vFinishBlit(pDc, NULL);
PATH_UnlockPath(pPath);
PATH_Delete(pPath->BaseObject.hHmgr);
pDc->dclevel.hPath = 0;
pDc->dclevel.flPath &= ~DCPATH_ACTIVE;
DC_UnlockDc(pDc);
return bRet;
}
BOOL
APIENTRY
NtGdiWidenPath(HDC hDC)
{
PPATH pPath;
BOOL Ret = FALSE;
PDC pdc = DC_LockDc(hDC);
TRACE("NtGdiWidenPat Enter\n");
if (!pdc)
{
EngSetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
pPath = PATH_WidenPath(pdc);
if (pPath)
{
TRACE("WindenPath New Path\n");
PATH_Delete(pdc->dclevel.hPath);
pdc->dclevel.hPath = pPath->BaseObject.hHmgr;
Ret = TRUE;
}
DC_UnlockDc(pdc);
TRACE("NtGdiWidenPat Ret %d\n",Ret);
return Ret;
}
/* EOF */
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