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-rw-r--r--embedserv/source/embed/tracker.cxx862
1 files changed, 862 insertions, 0 deletions
diff --git a/embedserv/source/embed/tracker.cxx b/embedserv/source/embed/tracker.cxx
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+++ b/embedserv/source/embed/tracker.cxx
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+/*************************************************************************
+ *
+ * $RCSfile: tracker.cxx,v $
+ *
+ * $Revision: 1.2 $
+ *
+ * last change: $Author: kz $ $Date: 2004-02-25 17:10:09 $
+ *
+ * The Contents of this file are made available subject to the terms of
+ * either of the following licenses
+ *
+ * - GNU Lesser General Public License Version 2.1
+ * - Sun Industry Standards Source License Version 1.1
+ *
+ * Sun Microsystems Inc., October, 2000
+ *
+ * GNU Lesser General Public License Version 2.1
+ * =============================================
+ * Copyright 2000 by Sun Microsystems, Inc.
+ * 901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ *
+ * Sun Industry Standards Source License Version 1.1
+ * =================================================
+ * The contents of this file are subject to the Sun Industry Standards
+ * Source License Version 1.1 (the "License"); You may not use this file
+ * except in compliance with the License. You may obtain a copy of the
+ * License at http://www.openoffice.org/license.html.
+ *
+ * Software provided under this License is provided on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
+ * WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
+ * MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
+ * See the License for the specific provisions governing your rights and
+ * obligations concerning the Software.
+ *
+ * The Initial Developer of the Original Code is: Sun Microsystems, Inc.
+ *
+ * Copyright: 2000 by Sun Microsystems, Inc.
+ *
+ * All Rights Reserved.
+ *
+ * Contributor(s): _______________________________________
+ *
+ *
+ ************************************************************************/
+
+#include <stddef.h>
+#include "syswinwrapper.hxx"
+
+
+HCURSOR _afxCursors[10] = { 0, };
+HBRUSH _afxHalftoneBrush = 0;
+
+
+// the struct below is used to determine the qualities of a particular handle
+struct AFX_HANDLEINFO
+{
+ size_t nOffsetX; // offset within RECT for X coordinate
+ size_t nOffsetY; // offset within RECT for Y coordinate
+ int nCenterX; // adjust X by Width()/2 * this number
+ int nCenterY; // adjust Y by Height()/2 * this number
+ int nHandleX; // adjust X by handle size * this number
+ int nHandleY; // adjust Y by handle size * this number
+ int nInvertX; // handle converts to this when X inverted
+ int nInvertY; // handle converts to this when Y inverted
+};
+
+// this array describes all 8 handles (clock-wise)
+const AFX_HANDLEINFO _afxHandleInfo[] =
+{
+ // corner handles (top-left, top-right, bottom-right, bottom-left
+ { offsetof(RECT, left), offsetof(RECT, top), 0, 0, 0, 0, 1, 3 },
+ { offsetof(RECT, right), offsetof(RECT, top), 0, 0, -1, 0, 0, 2 },
+ { offsetof(RECT, right), offsetof(RECT, bottom), 0, 0, -1, -1, 3, 1 },
+ { offsetof(RECT, left), offsetof(RECT, bottom), 0, 0, 0, -1, 2, 0 },
+
+ // side handles (top, right, bottom, left)
+ { offsetof(RECT, left), offsetof(RECT, top), 1, 0, 0, 0, 4, 6 },
+ { offsetof(RECT, right), offsetof(RECT, top), 0, 1, -1, 0, 7, 5 },
+ { offsetof(RECT, left), offsetof(RECT, bottom), 1, 0, 0, -1, 6, 4 },
+ { offsetof(RECT, left), offsetof(RECT, top), 0, 1, 0, 0, 5, 7 }
+};
+
+// the struct below gives us information on the layout of a RECT struct and
+// the relationship between its members
+struct AFX_RECTINFO
+{
+ size_t nOffsetAcross; // offset of opposite point (ie. left->right)
+ int nSignAcross; // sign relative to that point (ie. add/subtract)
+};
+
+// this array is indexed by the offset of the RECT member / sizeof(int)
+const AFX_RECTINFO _afxRectInfo[] =
+{
+ { offsetof(RECT, right), +1 },
+ { offsetof(RECT, bottom), +1 },
+ { offsetof(RECT, left), -1 },
+ { offsetof(RECT, top), -1 },
+};
+
+
+HBRUSH HalftoneBrush() {
+ if (_afxHalftoneBrush == NULL)
+ {
+ WORD grayPattern[8];
+ for (int i = 0; i < 8; i++)
+ grayPattern[i] = (WORD)(0x5555 << (i & 1));
+ HBITMAP grayBitmap = CreateBitmap(8, 8, 1, 1, &grayPattern);
+ if (grayBitmap != NULL)
+ {
+ _afxHalftoneBrush = CreatePatternBrush(grayBitmap);
+ DeleteObject(grayBitmap);
+ }
+ }
+ return _afxHalftoneBrush;
+}
+
+
+
+void DrawDragRect(
+ HDC hDC,LPRECT lpRect,SIZE size,
+ LPRECT lpRectLast,SIZE sizeLast,
+ HBRUSH hBrush = NULL,HBRUSH hBrushLast = NULL)
+{
+ // first, determine the update region and select it
+ HRGN rgnNew;
+ HRGN rgnOutside,rgnInside;
+ rgnOutside = CreateRectRgnIndirect(lpRect);
+ RECT rect = *lpRect;
+ InflateRect(&rect,-size.cx, -size.cy);
+ IntersectRect(&rect,&rect,lpRect);
+ rgnInside = CreateRectRgnIndirect(&rect);
+ rgnNew = CreateRectRgn(0, 0, 0, 0);
+ CombineRgn(rgnNew,rgnOutside,rgnInside,RGN_XOR);
+
+ HBRUSH hBrushOld = NULL;
+ if (hBrush == NULL)
+ hBrush = HalftoneBrush();
+ if (hBrushLast == NULL)
+ hBrushLast = hBrush;
+
+ HRGN rgnLast,rgnUpdate;
+ if (lpRectLast != NULL)
+ {
+ // find difference between new region and old region
+ rgnLast = CreateRectRgn(0, 0, 0, 0);
+ SetRectRgn(
+ rgnOutside,
+ lpRectLast->left,
+ lpRectLast->top,
+ lpRectLast->right,
+ lpRectLast->bottom);
+ rect = *lpRectLast;
+ InflateRect(&rect,-sizeLast.cx, -sizeLast.cy);
+ IntersectRect(&rect,&rect, lpRectLast);
+ SetRectRgn(rgnInside,rect.left,rect.top,rect.right,rect.bottom);
+ CombineRgn(rgnLast,rgnOutside,rgnInside, RGN_XOR);
+
+// // only diff them if brushes are the same
+ if (hBrush == hBrushLast)
+ {
+ rgnUpdate = CreateRectRgn(0, 0, 0, 0);
+ CombineRgn(rgnUpdate,rgnLast,rgnNew, RGN_XOR);
+ }
+ }
+ if (hBrush != hBrushLast && lpRectLast != NULL)
+ {
+ // brushes are different -- erase old region first
+ SelectClipRgn(hDC,rgnLast);
+ GetClipBox(hDC,&rect);
+ hBrushOld = (HBRUSH)SelectObject(hDC,(HGDIOBJ)hBrushLast);
+ PatBlt(hDC,rect.left,rect.top,(rect.right-rect.left),(rect.bottom-rect.top),PATINVERT);
+
+ SelectObject(hDC,(HGDIOBJ)hBrushOld);
+ hBrushOld = NULL;
+ }
+
+ // draw into the update/new region
+ SelectClipRgn(hDC,rgnUpdate);
+
+ GetClipBox(hDC,&rect);
+ hBrushOld = (HBRUSH) SelectObject(hDC,(HGDIOBJ) hBrush);
+ PatBlt(hDC,rect.left, rect.top,(rect.right-rect.left),(rect.bottom-rect.top), PATINVERT);
+
+ // cleanup DC
+ if (hBrushOld != NULL)
+ SelectObject(hDC,(HGDIOBJ)hBrushOld);
+ SelectClipRgn(hDC,NULL);
+}
+
+
+void winwrap::TransformRect(LPRECT rect,HWND pWnd,HWND pWndClipTo)
+{
+ POINT pt;
+ pt.x = rect->left;pt.y = rect->top;
+ ClientToScreen(pWnd,&pt);
+ ScreenToClient(pWndClipTo,&pt);
+ rect->left = pt.x; rect->top = pt.y;
+
+ pt.x = rect->right;pt.y = rect->bottom;
+ ClientToScreen(pWnd,&pt);
+ ScreenToClient(pWndClipTo,&pt);
+ rect->right = pt.x; rect->bottom = pt.y;
+}
+
+
+void NormalizeRect(LPRECT rp)
+{
+ if(rp->left > rp->right) {
+ UINT tmp = rp->left;
+ rp->left = rp->right;
+ rp->right = tmp;
+ }
+
+ if(rp->top > rp->bottom) {
+ UINT tmp = rp->top;
+ rp->top = rp->bottom;
+ rp->bottom = tmp;
+ }
+}
+
+
+using namespace winwrap;
+
+
+Tracker::Tracker()
+{
+
+}
+
+
+Tracker::Tracker(LPCRECT lpSrcRect, UINT nStyle)
+{
+ Construct();
+ CopyRect(&m_rect,lpSrcRect);
+ m_nStyle = nStyle;
+}
+
+HBRUSH _afxHatchBrush = 0;
+HPEN _afxBlackDottedPen = 0;
+int _afxHandleSize = 0;
+
+
+void Tracker::Construct()
+{
+ static BOOL bInitialized = false;
+ if (!bInitialized)
+ {
+ if (_afxHatchBrush == NULL)
+ {
+ // create the hatch pattern + bitmap
+ WORD hatchPattern[8];
+ WORD wPattern = 0x1111;
+ for (int i = 0; i < 4; i++)
+ {
+ hatchPattern[i] = wPattern;
+ hatchPattern[i+4] = wPattern;
+ wPattern <<= 1;
+ }
+ HBITMAP hatchBitmap = CreateBitmap(8, 8, 1, 1,&hatchPattern);
+
+ // create black hatched brush
+ _afxHatchBrush = CreatePatternBrush(hatchBitmap);
+ DeleteObject(hatchBitmap);
+ }
+
+ if (_afxBlackDottedPen == NULL)
+ {
+ // create black dotted pen
+ _afxBlackDottedPen = CreatePen(PS_DOT, 0, RGB(0, 0, 0));
+ }
+
+ // get default handle size from Windows profile setting
+ static const TCHAR szWindows[] = TEXT("windows");
+ static const TCHAR szInplaceBorderWidth[] =
+ TEXT("oleinplaceborderwidth");
+ _afxHandleSize = GetProfileInt(szWindows, szInplaceBorderWidth, 4);
+ bInitialized = TRUE;
+
+ _afxCursors[0] = _afxCursors[2] = LoadCursor(0,IDC_SIZENWSE);
+ _afxCursors[4] = _afxCursors[6] = LoadCursor(0,IDC_SIZENS);
+ _afxCursors[1] = _afxCursors[3] = LoadCursor(0,IDC_SIZENESW);
+ _afxCursors[5] = _afxCursors[7] = LoadCursor(0,IDC_SIZEWE);
+ _afxCursors[8] = LoadCursor(0,IDC_SIZEALL);
+ }
+
+ m_nStyle = 0;
+ m_nHandleSize = _afxHandleSize;
+ m_sizeMin.cy = m_sizeMin.cx = m_nHandleSize*2;
+
+ SetRectEmpty(&m_rectLast);
+ m_sizeLast.cx = m_sizeLast.cy = 0;
+ m_bErase = FALSE;
+ m_bFinalErase = FALSE;
+}
+
+Tracker::~Tracker()
+{
+}
+
+
+int Tracker::HitTest(POINT point) const
+{
+ TrackerHit hitResult = hitNothing;
+
+ RECT rectTrue;
+ GetTrueRect(&rectTrue);
+ NormalizeRect(&rectTrue);
+ if (PtInRect(&rectTrue,point))
+ {
+ if ((m_nStyle & (resizeInside|resizeOutside)) != 0)
+ hitResult = (TrackerHit)HitTestHandles(point);
+ else
+ hitResult = hitMiddle;
+ }
+ return hitResult;
+}
+
+
+BOOL Tracker::SetCursor(HWND pWnd, UINT nHitTest) const
+{
+ // trackers should only be in client area
+ if (nHitTest != HTCLIENT)
+ return FALSE;
+
+ // convert cursor position to client co-ordinates
+ POINT point;
+ GetCursorPos(&point);
+ ScreenToClient(pWnd,&point);
+
+ // do hittest and normalize hit
+ int nHandle = HitTestHandles(point);
+ if (nHandle < 0)
+ return FALSE;
+
+ // need to normalize the hittest such that we get proper cursors
+ nHandle = NormalizeHit(nHandle);
+
+ // handle special case of hitting area between handles
+ // (logically the same -- handled as a move -- but different cursor)
+ if (nHandle == hitMiddle && !PtInRect(&m_rect,point))
+ {
+ // only for trackers with hatchedBorder (ie. in-place resizing)
+ if (m_nStyle & hatchedBorder)
+ nHandle = (TrackerHit)9;
+ }
+
+ ::SetCursor(_afxCursors[nHandle]);
+ return TRUE;
+}
+
+
+
+BOOL Tracker::Track(HWND hWnd,POINT point,BOOL bAllowInvert,
+ HWND hWndClipTo)
+{
+ // perform hit testing on the handles
+ int nHandle = HitTestHandles(point);
+ if (nHandle < 0)
+ {
+ // didn't hit a handle, so just return FALSE
+ return FALSE;
+ }
+
+ // otherwise, call helper function to do the tracking
+ m_bAllowInvert = bAllowInvert;
+ SetCursor(hWnd,nHandle);
+ return TrackHandle(nHandle, hWnd, point, hWndClipTo);
+}
+
+
+BOOL Tracker::TrackHandle(int nHandle,HWND hWnd,POINT point,HWND hWndClipTo)
+{
+ // don't handle if capture already set
+ if (GetCapture() != NULL)
+ return FALSE;
+
+ // save original width & height in pixels
+ int nWidth = m_rect.right - m_rect.left;
+ int nHeight = m_rect.bottom - m_rect.top;
+
+ // set capture to the window which received this message
+ SetCapture(hWnd);
+ UpdateWindow(hWnd);
+ if (hWndClipTo != NULL)
+ UpdateWindow(hWndClipTo);
+ RECT rectSave = m_rect;
+
+ // find out what x/y coords we are supposed to modify
+ int *px, *py;
+ int xDiff, yDiff;
+ GetModifyPointers(nHandle, &px, &py, &xDiff, &yDiff);
+ xDiff = point.x - xDiff;
+ yDiff = point.y - yDiff;
+
+ // get DC for drawing
+ HDC hDrawDC;
+ if (hWndClipTo != NULL)
+ {
+ // clip to arbitrary window by using adjusted Window DC
+ hDrawDC = GetDCEx(hWndClipTo,NULL, DCX_CACHE);
+ }
+ else
+ {
+ // otherwise, just use normal DC
+ hDrawDC = GetDC(hWnd);
+ }
+
+ RECT rectOld;
+ BOOL bMoved = FALSE;
+
+ // get messages until capture lost or cancelled/accepted
+ for (;;)
+ {
+ MSG msg;
+ GetMessage(&msg, NULL, 0, 0);
+
+ if (GetCapture() != hWnd)
+ break;
+
+ switch (msg.message)
+ {
+ // handle movement/accept messages
+ case WM_LBUTTONUP:
+ case WM_MOUSEMOVE:
+ rectOld = m_rect;
+ // handle resize cases (and part of move)
+ if (px != NULL)
+ *px = (int)(short)LOWORD(msg.lParam) - xDiff;
+ if (py != NULL)
+ *py = (int)(short)HIWORD(msg.lParam) - yDiff;
+
+ // handle move case
+ if (nHandle == hitMiddle)
+ {
+ m_rect.right = m_rect.left + nWidth;
+ m_rect.bottom = m_rect.top + nHeight;
+ }
+ // allow caller to adjust the rectangle if necessary
+ AdjustRect(nHandle,&m_rect);
+
+ // only redraw and callback if the rect actually changed!
+ m_bFinalErase = (msg.message == WM_LBUTTONUP);
+ if (!EqualRect(&rectOld,&m_rect) || m_bFinalErase)
+ {
+ if (bMoved)
+ {
+ m_bErase = TRUE;
+ DrawTrackerRect(&rectOld,hWndClipTo,hDrawDC,hWnd);
+ }
+ OnChangedRect(rectOld);
+ if (msg.message != WM_LBUTTONUP)
+ bMoved = TRUE;
+ }
+ if (m_bFinalErase)
+ goto ExitLoop;
+
+ if (!EqualRect(&rectOld,&m_rect))
+ {
+ m_bErase = FALSE;
+ DrawTrackerRect(&m_rect,hWndClipTo,hDrawDC,hWnd);
+ }
+ break;
+
+ // handle cancel messages
+ case WM_KEYDOWN:
+ if (msg.wParam != VK_ESCAPE)
+ break;
+ case WM_RBUTTONDOWN:
+ if (bMoved)
+ {
+ m_bErase = m_bFinalErase = TRUE;
+ DrawTrackerRect(&m_rect, hWndClipTo, hDrawDC, hWnd);
+ }
+ m_rect = rectSave;
+ goto ExitLoop;
+
+ // just dispatch rest of the messages
+ default:
+ DispatchMessage(&msg);
+ break;
+ }
+ }
+
+ ExitLoop:
+ if (hWndClipTo != NULL)
+ ReleaseDC(hWndClipTo,hDrawDC);
+ else
+ ReleaseDC(hWnd,hDrawDC);
+ ReleaseCapture();
+
+ // restore rect in case bMoved is still FALSE
+ if (!bMoved)
+ m_rect = rectSave;
+ m_bFinalErase = FALSE;
+ m_bErase = FALSE;
+
+ // return TRUE only if rect has changed
+ return !EqualRect(&rectSave,&m_rect);
+}
+
+
+void Tracker::OnChangedRect(const RECT& rectOld)
+{
+
+}
+
+
+void Tracker::AdjustRect(int nHandle, LPRECT)
+{
+ if(nHandle == hitMiddle)
+ return;
+
+ // convert the handle into locations within m_rect
+ int *px, *py;
+ GetModifyPointers(nHandle, &px, &py, NULL, NULL);
+
+ // enforce minimum width
+ int nNewWidth = m_rect.right - m_rect.left;
+ int nAbsWidth = m_bAllowInvert ? abs(nNewWidth) : nNewWidth;
+ if (px != NULL && nAbsWidth < m_sizeMin.cx)
+ {
+ nNewWidth = nAbsWidth != 0 ? nNewWidth / nAbsWidth : 1;
+ const AFX_RECTINFO* pRectInfo =
+ &_afxRectInfo[(int*)px - (int*)&m_rect];
+ *px = *(int*)((BYTE*)&m_rect + pRectInfo->nOffsetAcross) +
+ nNewWidth * m_sizeMin.cx * -pRectInfo->nSignAcross;
+ }
+
+ // enforce minimum height
+ int nNewHeight = m_rect.bottom - m_rect.top;
+ int nAbsHeight = m_bAllowInvert ? abs(nNewHeight) : nNewHeight;
+ if (py != NULL && nAbsHeight < m_sizeMin.cy)
+ {
+ nNewHeight = nAbsHeight != 0 ? nNewHeight / nAbsHeight : 1;
+ const AFX_RECTINFO* pRectInfo =
+ &_afxRectInfo[(int*)py - (int*)&m_rect];
+ *py = *(int*)((BYTE*)&m_rect + pRectInfo->nOffsetAcross) +
+ nNewHeight * m_sizeMin.cy * -pRectInfo->nSignAcross;
+ }
+}
+
+
+void Tracker::DrawTrackerRect(
+ LPRECT lpRect,HWND pWndClipTo,HDC pDC,HWND pWnd)
+{
+ // first, normalize the rectangle for drawing
+ RECT rect = *lpRect;
+ NormalizeRect(&rect);
+
+ // convert to client coordinates
+ if (pWndClipTo != NULL)
+ TransformRect(&rect,pWnd,pWndClipTo);
+
+ SIZE size;
+ size.cx = 0; size.cy = 0;
+ if (!m_bFinalErase)
+ {
+ // otherwise, size depends on the style
+ if (m_nStyle & hatchedBorder)
+ {
+ size.cx = size.cy = max(1,GetHandleSize(&rect)-1);
+ InflateRect(&rect,size.cx,size.cy);
+ }
+ else
+ {
+ size.cx = 1; // CX_BORDER;
+ size.cy = 1; // CY_BORDER;
+ }
+ }
+
+ // and draw it
+ if (m_bFinalErase || !m_bErase)
+ DrawDragRect(pDC,&rect,size,&m_rectLast,m_sizeLast);
+
+ // remember last rectangles
+ m_rectLast = rect;
+ m_sizeLast = size;
+}
+
+
+void Tracker::Draw(HDC hDC) const
+{
+ // set initial DC state
+ SetMapMode(hDC,MM_TEXT);
+ SetViewportOrgEx(hDC,0, 0,NULL);
+ SetWindowOrgEx(hDC,0, 0,NULL);
+
+ // get normalized rectangle
+ RECT rect = m_rect;
+ NormalizeRect(&rect);
+
+ HPEN pOldPen = NULL;
+ HBRUSH pOldBrush = NULL;
+ HGDIOBJ pTemp;
+ int nOldROP;
+
+ // draw lines
+ if ((m_nStyle & (dottedLine|solidLine)) != 0)
+ {
+ if (m_nStyle & dottedLine)
+ pOldPen = (HPEN)SelectObject(hDC,_afxBlackDottedPen);
+ else
+ pOldPen = (HPEN)SelectObject(hDC,(HGDIOBJ)BLACK_PEN);
+ pOldBrush = (HBRUSH)SelectObject(hDC,(HGDIOBJ)NULL_BRUSH);
+ nOldROP = SetROP2(hDC,R2_COPYPEN);
+ InflateRect(&rect,+1, +1); // borders are one pixel outside
+ Rectangle(hDC,rect.left, rect.top, rect.right, rect.bottom);
+ SetROP2(hDC,nOldROP);
+ }
+
+ // if hatchBrush is going to be used, need to unrealize it
+ if ((m_nStyle & (hatchInside|hatchedBorder)) != 0)
+ UnrealizeObject((HGDIOBJ)_afxHatchBrush);
+
+ // hatch inside
+ if ((m_nStyle & hatchInside) != 0)
+ {
+ pTemp = SelectObject(hDC,(HGDIOBJ)NULL_PEN);
+ if (pOldPen == NULL)
+ pOldPen = (HPEN)pTemp;
+ pTemp = SelectObject(hDC,(HGDIOBJ)_afxHatchBrush);
+ if (pOldBrush == NULL)
+ pOldBrush = (HBRUSH)pTemp;
+ SetBkMode(hDC,TRANSPARENT);
+ nOldROP = SetROP2(hDC,R2_MASKNOTPEN);
+ Rectangle(hDC,rect.left+1, rect.top+1, rect.right, rect.bottom);
+ SetROP2(hDC,nOldROP);
+ }
+
+ // draw hatched border
+ if ((m_nStyle & hatchedBorder) != 0)
+ {
+ pTemp = SelectObject(hDC,(HGDIOBJ)_afxHatchBrush);
+ if (pOldBrush == NULL)
+ pOldBrush = (HBRUSH)pTemp;
+ SetBkMode(hDC,OPAQUE);
+ RECT rectTrue;
+ GetTrueRect(&rectTrue);
+ PatBlt(hDC,rectTrue.left, rectTrue.top, rectTrue.right-rectTrue.left,
+ rect.top-rectTrue.top, 0x000F0001 /* Pn */);
+ PatBlt(hDC,rectTrue.left, rect.bottom,
+ rectTrue.right-rectTrue.left,
+ rectTrue.bottom-rect.bottom, 0x000F0001 /* Pn */);
+ PatBlt(hDC,rectTrue.left, rect.top, rect.left-rectTrue.left,
+ rect.bottom-rect.top, 0x000F0001 /* Pn */);
+ PatBlt(hDC,rect.right, rect.top, rectTrue.right-rect.right,
+ rect.bottom-rect.top, 0x000F0001 /* Pn */);
+ }
+
+ // draw resize handles
+ if ((m_nStyle & (resizeInside|resizeOutside)) != 0)
+ {
+ UINT mask = GetHandleMask();
+ HBRUSH hbrush = CreateSolidBrush(RGB(0,0,0));
+ for (int i = 0; i < 8; ++i)
+ {
+ if (mask & (1<<i))
+ {
+ GetHandleRect((TrackerHit)i, &rect);
+ // FillSolidRect(hDC,rect, RGB(0, 0, 0));
+ FillRect(hDC,&rect,hbrush);
+ }
+ }
+ DeleteObject(hbrush);
+ }
+
+ // cleanup pDC state
+ if (pOldPen != NULL)
+ SelectObject(hDC,pOldPen);
+ if (pOldBrush != NULL)
+ SelectObject(hDC,pOldBrush);
+ RestoreDC(hDC,-1);
+}
+
+
+void Tracker::GetHandleRect(int nHandle,RECT* pHandleRect) const
+{
+ // get normalized rectangle of the tracker
+ RECT rectT = m_rect;
+ NormalizeRect(&rectT);
+ if ((m_nStyle & (solidLine|dottedLine)) != 0)
+ InflateRect(&rectT,+1, +1);
+
+ // since the rectangle itself was normalized, we also have to invert the
+ // resize handles.
+ nHandle = NormalizeHit(nHandle);
+
+ // handle case of resize handles outside the tracker
+ int size = GetHandleSize();
+ if (m_nStyle & resizeOutside)
+ InflateRect(&rectT,size-1, size-1);
+
+ // calculate position of the resize handle
+ int nWidth = rectT.right - rectT.left;
+ int nHeight = rectT.bottom - rectT.top;
+ RECT rect;
+ const AFX_HANDLEINFO* pHandleInfo = &_afxHandleInfo[nHandle];
+ rect.left = *(int*)((BYTE*)&rectT + pHandleInfo->nOffsetX);
+ rect.top = *(int*)((BYTE*)&rectT + pHandleInfo->nOffsetY);
+ rect.left += size * pHandleInfo->nHandleX;
+ rect.top += size * pHandleInfo->nHandleY;
+ rect.left += pHandleInfo->nCenterX * (nWidth - size) / 2;
+ rect.top += pHandleInfo->nCenterY * (nHeight - size) / 2;
+ rect.right = rect.left + size;
+ rect.bottom = rect.top + size;
+
+ *pHandleRect = rect;
+}
+
+
+int Tracker::GetHandleSize(LPRECT lpRect) const
+{
+ if (lpRect == NULL)
+ lpRect = (LPRECT)&m_rect;
+
+ int size = m_nHandleSize;
+ if (!(m_nStyle & resizeOutside))
+ {
+ // make sure size is small enough for the size of the rect
+ int sizeMax = min(abs(lpRect->right - lpRect->left),
+ abs(lpRect->bottom - lpRect->top));
+ if (size * 2 > sizeMax)
+ size = sizeMax / 2;
+ }
+ return size;
+}
+
+
+UINT Tracker::GetHandleMask() const
+{
+ UINT mask = 0x0F; // always have 4 corner handles
+ int size = m_nHandleSize*3;
+ if (abs(m_rect.right - m_rect.left) - size > 4)
+ mask |= 0x50;
+ if (abs(m_rect.bottom - m_rect.top) - size > 4)
+ mask |= 0xA0;
+ return mask;
+}
+
+
+void Tracker::GetTrueRect(LPRECT lpTrueRect) const
+{
+ RECT rect = m_rect;
+ NormalizeRect(&rect);
+ int nInflateBy = 0;
+ if ((m_nStyle & (resizeOutside|hatchedBorder)) != 0)
+ nInflateBy += GetHandleSize() - 1;
+ if ((m_nStyle & (solidLine|dottedLine)) != 0)
+ ++nInflateBy;
+ InflateRect(&rect,nInflateBy, nInflateBy);
+ *lpTrueRect = rect;
+}
+
+
+int Tracker::NormalizeHit(int nHandle) const
+{
+ if (nHandle == hitMiddle || nHandle == hitNothing)
+ return nHandle;
+ const AFX_HANDLEINFO* pHandleInfo = &_afxHandleInfo[nHandle];
+ if (m_rect.right - m_rect.left < 0)
+ {
+ nHandle = (TrackerHit)pHandleInfo->nInvertX;
+ pHandleInfo = &_afxHandleInfo[nHandle];
+ }
+ if (m_rect.bottom - m_rect.top < 0)
+ nHandle = (TrackerHit)pHandleInfo->nInvertY;
+ return nHandle;
+}
+
+
+int Tracker::HitTestHandles(POINT point) const
+{
+ RECT rect;
+ UINT mask = GetHandleMask();
+
+ // see if hit anywhere inside the tracker
+ GetTrueRect(&rect);
+ if (!PtInRect(&rect,point))
+ return hitNothing; // totally missed
+
+ // see if we hit a handle
+ for (int i = 0; i < 8; ++i)
+ {
+ if (mask & (1<<i))
+ {
+ GetHandleRect((TrackerHit)i, &rect);
+ if (PtInRect(&rect,point))
+ return (TrackerHit)i;
+ }
+ }
+
+ // last of all, check for non-hit outside of object, between resize handles
+ if ((m_nStyle & hatchedBorder) == 0)
+ {
+ RECT rect = m_rect;
+ NormalizeRect(&rect);
+ if ((m_nStyle & dottedLine|solidLine) != 0)
+ InflateRect(&rect,+1, +1);
+ if (!PtInRect(&rect,point))
+ return hitNothing; // must have been between resize handles
+ }
+ return hitMiddle; // no handle hit, but hit object (or object border)
+}
+
+
+
+void Tracker::GetModifyPointers(
+ int nHandle, int** ppx, int** ppy, int* px, int* py)
+{
+ if (nHandle == hitMiddle)
+ nHandle = hitTopLeft; // same as hitting top-left
+
+ *ppx = NULL;
+ *ppy = NULL;
+
+ // fill in the part of the rect that this handle modifies
+ // (Note: handles that map to themselves along a given axis when that
+ // axis is inverted don't modify the value on that axis)
+
+ const AFX_HANDLEINFO* pHandleInfo = &_afxHandleInfo[nHandle];
+ if (pHandleInfo->nInvertX != nHandle)
+ {
+ *ppx = (int*)((BYTE*)&m_rect + pHandleInfo->nOffsetX);
+ if (px != NULL)
+ *px = **ppx;
+ }
+ else
+ {
+ // middle handle on X axis
+ if (px != NULL)
+ *px = m_rect.left + (m_rect.left-m_rect.right) / 2;
+ }
+ if (pHandleInfo->nInvertY != nHandle)
+ {
+ *ppy = (int*)((BYTE*)&m_rect + pHandleInfo->nOffsetY);
+ if (py != NULL)
+ *py = **ppy;
+ }
+ else
+ {
+ // middle handle on Y axis
+ if (py != NULL)
+ *py = m_rect.top + (m_rect.top-m_rect.bottom) / 2;
+ }
+}
+