windows-nt/Source/XPSP1/NT/shell/osshell/accesory/mspaint/tracker.cpp

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2020-09-26 03:20:57 -05:00
#include "stdafx.h"
#include "global.h"
#include "pbrush.h"
#include "sprite.h"
#include "tracker.h"
#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif
#include "memtrace.h"
// FUTURE: Make these static to CTracker!
CBitmap NEAR g_bmapDragHandle; // Handle for the drag handle bitmap.
CBitmap NEAR g_bmapDragHandle2; // Handle for hollow drag handle bitmap.
// These are the bitmaps arrays used for tracker borders and the dotted
// drag rectangles.
//
static unsigned short bmapHorizBorder[] =
{ 0x0F, 0x0F, 0x0F, 0x0F, 0xF0, 0xF0, 0xF0, 0xF0 };
static unsigned short bmapVertBorder [] =
{ 0x55, 0xAA, 0x55, 0xAA, 0x55, 0xAA, 0x55, 0xAA };
static CBrush NEAR brushHorizBorder;
static CBrush NEAR brushVertBorder;
static CBitmap NEAR bitmapHorizBorder;
static CBitmap NEAR bitmapVertBorder;
static HCURSOR hcurArrow = NULL; // System "Select Arrow" cursor.
static HCURSOR hcurMove = NULL; // System "Move" cursor.
static HCURSOR hcurSizeNESW = NULL; // System sizing "NESW" cursor.
static HCURSOR hcurSizeNS = NULL; // System sizing "NS" cursor.
static HCURSOR hcurSizeNWSE = NULL; // System sizing "NWSE" cursor.
static HCURSOR hcurSizeWE = NULL; // System sizing "WE" cursor.
static HCURSOR hcurDragTool;
// This array of hCursors is used to map tracker states (see the definition
// of CTracker in editor.hxx) to the appropriate mouse cursor bitmaps.
//
static HCURSOR* mapTrackerStateToPHCursor[] =
{
&hcurArrow, // nil
&hcurArrow, // predrag
&hcurMove, // moving
&hcurSizeNS, // resizingTop
&hcurSizeWE, // resizingLeft
&hcurSizeWE, // resizingRight
&hcurSizeNS, // resizingBottom
&hcurSizeNWSE, // resizingTopLeft
&hcurSizeNESW, // resizingTopRight
&hcurSizeNESW, // resizingBottomLeft
&hcurSizeNWSE, // resizingBottomRight
};
HCURSOR HCursorFromTrackerState( int m )
{
ASSERT(m >= 0 &&
m < sizeof (mapTrackerStateToPHCursor) / sizeof (HCURSOR*));
return (*(mapTrackerStateToPHCursor[m]));
}
/* RVUV2
*
* This code needs to be called, just once, before we begin to use
* trackers. In lieu of a standard initialization function into which
* I can put this code, I am using a moduleInit variable as a kludge.
*/
BOOL moduleInit = FALSE; /** RVUV2 temporary! **/
BOOL InitTrackers()
{
/*
* Initialize the brushes and bitmaps needed to do repaints
*/
if (! bitmapHorizBorder.CreateBitmap( 8, 8, 1, 1, (LPSTR)bmapHorizBorder )
|| ! bitmapVertBorder.CreateBitmap ( 8, 8, 1, 1, (LPSTR)bmapVertBorder )
|| ! brushHorizBorder.CreatePatternBrush( &bitmapHorizBorder )
|| ! brushVertBorder.CreatePatternBrush ( &bitmapVertBorder )
|| ! g_bmapDragHandle.LoadBitmap ( IDBM_DRAGHANDLE )
|| ! g_bmapDragHandle2.LoadBitmap( IDBM_DRAGHANDLE2 ))
{
// Future: Failure here should cause error in opening dialog resource!
theApp.SetMemoryEmergency( FALSE );
return FALSE;
}
hcurArrow = theApp.LoadStandardCursor( IDC_ARROW );
hcurMove = theApp.LoadCursor( IDCUR_MOVE );
hcurSizeNESW = theApp.LoadCursor( IDCUR_SIZENESW );
hcurSizeNS = theApp.LoadCursor( IDCUR_SIZENS );
hcurSizeNWSE = theApp.LoadCursor( IDCUR_SIZENWSE );
hcurSizeWE = theApp.LoadCursor( IDCUR_SIZEWE );
hcurDragTool = ::LoadCursor( AfxGetInstanceHandle(),
MAKEINTRESOURCE( IDC_DRAGTOOL ));
moduleInit = TRUE;
return TRUE;
}
/***************************************************************************/
void CTracker::CleanUpTracker()
{
brushHorizBorder.DeleteObject();
brushVertBorder.DeleteObject();
bitmapHorizBorder.DeleteObject();
bitmapVertBorder.DeleteObject();
g_bmapDragHandle.DeleteObject();
g_bmapDragHandle2.DeleteObject();
}
/***************************************************************************/
// NOTE: The rect passed in here is the inner-most rect of the tracker!
CTracker::STATE CTracker::HitTest( const CRect& rc,
CPoint pt,
STATE defaultState )
{
/*
* Compute position of edge (non-corner) handles
*/
int xMid = ((rc.right + rc.left) / 2) - (HANDLE_SIZE / 2);
int yMid = ((rc.top + rc.bottom) / 2) - (HANDLE_SIZE / 2);
/*
* Now we do the actual hit-testing for each resizing handle
*/
if ((pt.x < rc.left) && (pt.x > rc.left - HANDLE_SIZE))
{
if ((pt.y < rc.top) && (pt.y > rc.top - HANDLE_SIZE))
return(resizingTopLeft);
else
if ((pt.y >= rc.bottom) && (pt.y < rc.bottom + HANDLE_SIZE))
return(resizingBottomLeft);
else
if ( (pt.y >= yMid) && (pt.y < yMid + HANDLE_SIZE) )
return(resizingLeft);
}
else
if ((pt.x >= rc.right) && (pt.x < rc.right + HANDLE_SIZE))
{
if ((pt.y < rc.top) && (pt.y > rc.top - HANDLE_SIZE))
return(resizingTopRight);
else
if ((pt.y >= rc.bottom) && (pt.y < rc.bottom + HANDLE_SIZE))
return(resizingBottomRight);
else
if ((pt.y >= yMid) && (pt.y < yMid + HANDLE_SIZE))
return(resizingRight);
}
else
if ( (pt.x >= xMid) && (pt.x < xMid + HANDLE_SIZE) )
{
if ((pt.y < rc.top) && (pt.y > rc.top - HANDLE_SIZE))
return(resizingTop);
else
if ((pt.y >= rc.bottom) && (pt.y < rc.bottom + HANDLE_SIZE))
return(resizingBottom);
}
return (defaultState);
}
/******************************************************************************/
void CTracker::DrawBorder( CDC* dc, const CRect& trackerRect, EDGES edges )
{
if (! moduleInit)
InitTrackers(); // RVUV2
// Some precalculation for drawing the fuzzy borders
int width = trackerRect.Width();
int height = trackerRect.Height();
int borderWidth = HANDLE_SIZE;
int xLength = width - HANDLE_SIZE * 2;
int xHeight = height - HANDLE_SIZE * 2;
int xRight = trackerRect.left + width - HANDLE_SIZE;
int yBottom = trackerRect.top + height - HANDLE_SIZE;
int iOffset = 1;
// Draw the fuzzy borders. Note that we have different bitmaps for
// the vertical and horizontal borders.
COLORREF windowColor = GetSysColor( COLOR_WINDOW );
COLORREF highlightColor = GetSysColor( COLOR_HIGHLIGHT );
dc->SetTextColor( windowColor ); // colors reversed to adjust for
dc->SetBkColor ( highlightColor ); // patblt's reversed world view.
CBrush* oldBrush = dc->SelectObject( &brushHorizBorder );
if (! (edges & top))
{
dc->SelectObject( GetSysBrush( COLOR_APPWORKSPACE ) );
iOffset = 0;
}
dc->PatBlt( trackerRect.left + HANDLE_SIZE, trackerRect.top + iOffset, xLength, borderWidth - 2 * iOffset, PATCOPY );
dc->PatBlt( trackerRect.left + HANDLE_SIZE, yBottom + iOffset, xLength, borderWidth - 2 * iOffset, PATCOPY );
iOffset = 1;
// dc->SelectObject( &brushVertBorder );
if (! (edges & left))
{
dc->SelectObject( GetSysBrush( COLOR_APPWORKSPACE ) );
iOffset = 0;
}
dc->PatBlt( xRight + iOffset, trackerRect.top + HANDLE_SIZE, borderWidth - 2 * iOffset, xHeight, PATCOPY );
dc->PatBlt( trackerRect.left + iOffset, trackerRect.top + HANDLE_SIZE, borderWidth - 2 * iOffset, xHeight, PATCOPY );
dc->SelectObject( oldBrush ); // clean up
}
/******************************************************************************/
void CTracker::DrawHandles( CDC* dc, const CRect& rect, EDGES edges )
{
/*
* Some precalculation for tracker handles. The bitmaps are colored,
* but the function that loads them adds the windowColor and
* selectionColor.
*/
int x = rect.left + rect.Width() - HANDLE_SIZE;
int y = rect.top + rect.Height() - HANDLE_SIZE;
int xMid = rect.left + (((rect.Width() + 1) / 2) - (HANDLE_SIZE / 2));
int yMid = rect.top + (((rect.Height() + 1) / 2) - (HANDLE_SIZE / 2));
BOOL bTopLeft = (edges & top ) && (edges & left );
BOOL bTopRight = (edges & top ) && (edges & right);
BOOL bBottomLeft = (edges & bottom) && (edges & left );
BOOL bBottomRight = (edges & bottom) && (edges & right);
/*
* Choose a solid resizing handle if this is the currently selected
* control, otherwise choose a hollow tracker handle.
*/
CDC tempDC;
if (!tempDC.CreateCompatibleDC(dc))
{
theApp.SetGdiEmergency();
return;
}
/*
* Draw the eight resizing handles.
*/
dc->SetTextColor( GetSysColor( COLOR_HIGHLIGHT ) );
dc->SetBkColor ( GetSysColor( COLOR_WINDOW ) );
for (int i = 0; i < 2; i += 1)
{
CBitmap* pOldBitmap = tempDC.SelectObject( i? &g_bmapDragHandle2
: &g_bmapDragHandle );
if (bTopLeft)
dc->BitBlt(rect.left, rect.top, HANDLE_SIZE, HANDLE_SIZE,
&tempDC, 0, 0, SRCCOPY);
if (edges & top)
dc->BitBlt(xMid, rect.top, HANDLE_SIZE, HANDLE_SIZE,
&tempDC, 0, 0, SRCCOPY);
if (bTopRight)
dc->BitBlt(x, rect.top, HANDLE_SIZE, HANDLE_SIZE,
&tempDC, 0, 0, SRCCOPY);
if (edges & right)
dc->BitBlt(x, yMid, HANDLE_SIZE, HANDLE_SIZE,
&tempDC, 0, 0, SRCCOPY);
if (bBottomRight)
dc->BitBlt(x, y, HANDLE_SIZE, HANDLE_SIZE,
&tempDC, 0, 0, SRCCOPY);
if (edges & bottom)
dc->BitBlt(xMid, y, HANDLE_SIZE, HANDLE_SIZE,
&tempDC, 0, 0, SRCCOPY);
if (bBottomLeft)
dc->BitBlt(rect.left, y, HANDLE_SIZE, HANDLE_SIZE,
&tempDC, 0, 0, SRCCOPY);
if (edges & left)
dc->BitBlt(rect.left, yMid, HANDLE_SIZE, HANDLE_SIZE,
&tempDC, 0, 0, SRCCOPY);
edges = (EDGES)~(int)edges;
bTopLeft = !bTopLeft;
bTopRight = !bTopRight;
bBottomLeft = !bBottomLeft;
bBottomRight = !bBottomRight;
tempDC.SelectObject(pOldBitmap);
}
}
/******************************************************************************/
void CTracker::DrawBorderRgn( CDC* pdc, const CRect& trackerRect, CRgn *pcRgnPoly)
{
int ixOffset, iyOffset;
if (! moduleInit)
{
InitTrackers(); // RVUV2
}
COLORREF windowColor = GetSysColor( COLOR_WINDOW );
COLORREF highlightColor = GetSysColor( COLOR_HIGHLIGHT );
pdc->SetTextColor( windowColor ); // colors reversed to adjust for
pdc->SetBkColor ( highlightColor ); // patblt's reversed world view.
ixOffset = trackerRect.left + CTracker::HANDLE_SIZE + 1;
iyOffset = trackerRect.top + CTracker::HANDLE_SIZE + 1;
// offset bitmap in the imgwnd from selection boundary
if (pcRgnPoly != NULL
&& pcRgnPoly->GetSafeHandle() != NULL)
{
pcRgnPoly->OffsetRgn( ixOffset, iyOffset );
pdc->FrameRgn( pcRgnPoly, &brushVertBorder, 1, 1 );
pcRgnPoly->OffsetRgn( -ixOffset, -iyOffset );
}
}
/******************************************************************************/
void CTracker::DrawHandlesRgn( CDC* dc, const CRect& rect, EDGES edges, CRgn *pcRgnPoly)
{
/*
* Some precalculation for tracker handles. The bitmaps are colored,
* but the function that loads them adds the windowColor and
* selectionColor.
*/
}
/******************************************************************************/
CTracker::STATE CTracker::HitTestRgn( const CRect& rc, CPoint pt,
STATE defaultState, CRgn *pcRgnPoly)
{
// if (pcRgnPoly->PtInRegion(pt) != FALSE)
return (defaultState);
}
/******************************************************************************/