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459 lines
12 KiB
459 lines
12 KiB
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#include "stdafx.h"
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#include "global.h"
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#include "sprite.h"
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#ifdef _DEBUG
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#undef THIS_FILE
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static CHAR BASED_CODE THIS_FILE[] = __FILE__;
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#endif
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#ifdef _DEBUG
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IMPLEMENT_DYNAMIC( CDragger, CObject )
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IMPLEMENT_DYNAMIC( CMultiDragger, CDragger )
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IMPLEMENT_DYNAMIC(CSprite, CDragger)
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#endif
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#include "memtrace.h"
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extern BOOL moduleInit;
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/**********************************************************************/
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/* CDragger Implementation */
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/**********************************************************************/
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/*
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* OPTIMIZATION
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*
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* At the moment, draggers get a new DC whenever they need to draw or
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* erase. We could cut that in half easily by merging the draw/erase
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* code, and achieve even better wins by allocating a single DC for a
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* multiple selection draw/erase.
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*/
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CDragger::CDragger( CWnd* pWnd, CRect* pRect )
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{
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ASSERT(pWnd != NULL);
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m_pWnd = pWnd;
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m_state = hidden;
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m_rect.SetRect(0,0,0,0);
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if (pRect != NULL)
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m_rect = *pRect;
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}
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CDragger::~CDragger()
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{
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if (m_pWnd->m_hWnd != NULL && m_state != hidden)
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Hide();
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}
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/* CDragger::Draw
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*
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* This is a specialized Draw to draw our drag rectangles; drag
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* rectangles are the dotted rectangles which we draw when the user is
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* dragging a tracker to move or resize a control.
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*/
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void CDragger::Draw()
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{
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ASSERT( m_pWnd != NULL );
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CRect rect = m_rect;
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/*
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* This gets complex -- hold on to your hat. The m_rect is
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* measured in client coordinates of the window, but since we
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* need to use GetWindowDC rather than GetDC (to avoid having
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* the m_rect clipped by the dialog's children) we must map
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* these coordinates to window coords. We do this by mapping
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* them into screen coordinates, computing the offset from the
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* upper left corner of the dialog's WindowRect, and mapping
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* them back. It's the most efficient way I can think to do
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* it; other suggestions are welcome.
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*/
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CRect parentRect;
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m_pWnd->GetWindowRect( &parentRect );
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m_pWnd->ClientToScreen( &rect );
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rect.OffsetRect( -parentRect.left, -parentRect.top );
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// now we've got "rect" in the coordinates of the thing we
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// want to draw on.
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int dx = (rect.right - rect.left) - 1;
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int dy = (rect.bottom - rect.top) - 1;
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CDC* dc = m_pWnd->GetWindowDC();
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ASSERT( dc != NULL );
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CBrush* oldBrush = dc->SelectObject( GetHalftoneBrush() );
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dc->PatBlt( rect.left , rect.top , dx, 1 , PATINVERT );
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dc->PatBlt( rect.left , rect.bottom - 1, dx, 1 , PATINVERT );
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dc->PatBlt( rect.left , rect.top , 1 , dy, PATINVERT );
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dc->PatBlt( rect.right - 1, rect.top , 1 , dy, PATINVERT );
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dc->SelectObject( oldBrush );
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m_pWnd->ReleaseDC( dc );
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}
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/* CDragger::Erase
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*
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* Since the default draw uses XOR, we can just Draw again to erase!
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*/
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void CDragger::Erase()
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{
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Draw();
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}
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/* CDragger::Show, Hide
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*
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* The "drag rectangle" is the dotted rectangle which we draw when the
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* user is moving or resizing a control by dragging it with the mouse.
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* These functions erase and draw the drag rectangle, respectively.
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*/
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void CDragger::Hide()
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{
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if (m_state != shown)
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return;
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m_state = hidden;
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Erase();
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}
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void CDragger::Show()
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{
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if (m_state != hidden)
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return;
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m_state = shown;
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Draw();
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}
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void CDragger::Obscure( BOOL bObscure )
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{
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if (bObscure)
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{
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if (m_state != shown)
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return;
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Hide();
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m_state = obscured;
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}
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else
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{
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if (m_state != obscured)
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return;
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m_state = hidden;
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Show();
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}
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}
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/* CDragger::Move
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*
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* Since nearly every single occurance of "CDragger->Show" occurred in
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* the context "Hide, m_rect = foo, Show", I decided to merge this
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* functionality into a single C++ function.
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*/
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void CDragger::Move(const CRect& newRect, BOOL bForceShow)
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{
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if ((m_rect == newRect) && !bForceShow)
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return;
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BOOL fShow = bForceShow || m_state == shown;
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Hide();
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m_rect = newRect;
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if (fShow)
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Show();
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}
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void CDragger::MoveBy(int cx, int cy, BOOL bForceShow)
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{
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CSize offset (cx, cy);
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CPoint newTopLeft = m_rect.TopLeft() + offset;
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Move(newTopLeft, bForceShow);
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}
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CRect CDragger::GetRect() const
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{
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return m_rect;
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}
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void CDragger::Move(const CPoint& newTopLeft, BOOL bForceShow)
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{
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Move(m_rect - m_rect.TopLeft() + newTopLeft, bForceShow);
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}
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void CDragger::SetSize(const CSize& newSize, BOOL bForceShow)
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{
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CRect newRect = m_rect;
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newRect.right = newRect.left + newSize.cx;
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newRect.bottom = newRect.top + newSize.cy;
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Move(newRect, bForceShow);
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}
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CMultiDragger::CMultiDragger() : m_draggerList()
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{
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ASSERT( m_draggerList.IsEmpty() );
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}
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CMultiDragger::CMultiDragger(CWnd *pWnd) : CDragger(pWnd), m_draggerList()
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{
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ASSERT(m_draggerList.IsEmpty());
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}
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CMultiDragger::~CMultiDragger()
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{
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POSITION pos = m_draggerList.GetHeadPosition();
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while (pos != NULL)
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{
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CDragger *pDragger = (CDragger*) m_draggerList.GetNext(pos);
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delete pDragger;
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}
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}
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CRect CMultiDragger::GetRect() const
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{
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// accumulate the bounding rectangle for the group
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POSITION pos = m_draggerList.GetHeadPosition();
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CRect boundRect (32767, 32767, -32767, -32767);
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while (pos != NULL)
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{
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CDragger *pDragger = (CDragger*) m_draggerList.GetNext(pos);
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boundRect.left = min (boundRect.left, pDragger->m_rect.left);
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boundRect.right = max (boundRect.right, pDragger->m_rect.right);
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boundRect.top = min (boundRect.top, pDragger->m_rect.top);
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boundRect.bottom= max (boundRect.bottom, pDragger->m_rect.bottom);
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}
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return boundRect;
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}
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void CMultiDragger::Hide()
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{
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// hide each dragger on the list
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POSITION pos = m_draggerList.GetHeadPosition();
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while (pos != NULL)
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{
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CDragger* pDragger = (CDragger*) m_draggerList.GetNext(pos);
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pDragger->Hide();
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}
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}
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void CMultiDragger::Show()
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{
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// show each dragger on the list
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POSITION pos = m_draggerList.GetHeadPosition();
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while (pos != NULL)
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{
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CDragger* pDragger = (CDragger*) m_draggerList.GetNext(pos);
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pDragger->Show();
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}
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}
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void CMultiDragger::Draw()
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{
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// draw each dragger on the list
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POSITION pos = m_draggerList.GetHeadPosition();
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while (pos != NULL)
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{
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CDragger* pDragger = (CDragger*) m_draggerList.GetNext(pos);
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pDragger->Draw();
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}
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}
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void CMultiDragger::Erase()
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{
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// erase each dragger on the list
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POSITION pos = m_draggerList.GetHeadPosition();
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while (pos != NULL)
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{
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CDragger* pDragger = (CDragger*) m_draggerList.GetNext(pos);
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pDragger->Erase();
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}
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}
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void CMultiDragger::Move(const CPoint& newTopLeft, BOOL bForceShow)
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{
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// move each dragger to the new top left
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// first go through the list and find the current topmost leftmost
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// point
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CPoint topLeft (32767, 32767);
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POSITION pos = m_draggerList.GetHeadPosition();
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while (pos != NULL)
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{
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CDragger* pDragger = (CDragger*) m_draggerList.GetNext(pos);
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CRect draggerRect = pDragger->GetRect();
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if (draggerRect.left < topLeft.x)
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topLeft.x= draggerRect.left;
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if (draggerRect.top < topLeft.y)
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topLeft.y= draggerRect.top;
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}
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// now find the offset and move each dragger
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CSize offset = newTopLeft - topLeft;
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pos = m_draggerList.GetHeadPosition();
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while (pos != NULL)
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{
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CDragger* pDragger = (CDragger*) m_draggerList.GetNext(pos);
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pDragger->MoveBy(offset.cx, offset.cy, bForceShow);
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}
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}
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void CMultiDragger::Add(CDragger *pDragger)
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{
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// add the dragger to the list
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ASSERT(pDragger != NULL);
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m_draggerList.AddTail(pDragger);
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}
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void CMultiDragger::Remove(CDragger *pDragger)
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{
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// remove the dragger from the list
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ASSERT(pDragger != NULL);
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POSITION pos = m_draggerList.Find(pDragger);
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if (pos != NULL)
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m_draggerList.RemoveAt(pos);
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}
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CSprite::CSprite() : m_saveBits()
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{
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m_state = hidden;
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m_pWnd = NULL;
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}
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CSprite::CSprite(CWnd* pWnd, CRect* pRect)
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: CDragger(pWnd, pRect), m_saveBits()
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{
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m_state = hidden;
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m_pWnd = pWnd;
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}
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CSprite::~CSprite()
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{
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if (m_pWnd->m_hWnd != NULL && m_state != hidden)
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Hide();
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}
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void CSprite::Move(const CRect& newRect, BOOL bForceShow)
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{
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CRect rect = newRect;
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if ((rect == m_rect) && !bForceShow)
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return;
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STATE oldState = m_state;
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Hide();
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if (newRect.Size() != m_rect.Size())
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m_saveBits.DeleteObject();
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m_rect = rect;
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if (bForceShow || oldState == shown)
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Show();
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}
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void CSprite::SaveBits()
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{
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CClientDC dcWnd(m_pWnd);
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CDC dcSave;
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CBitmap* pOldBitmap;
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dcSave.CreateCompatibleDC(&dcWnd);
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if (m_saveBits.m_hObject == NULL)
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{
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m_saveBits.CreateCompatibleBitmap(&dcWnd, m_rect.Width(),
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m_rect.Height());
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}
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pOldBitmap = dcSave.SelectObject(&m_saveBits);
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dcSave.BitBlt(0, 0, m_rect.Width(), m_rect.Height(),
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&dcWnd, m_rect.left, m_rect.top, SRCCOPY);
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dcSave.SelectObject(pOldBitmap);
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}
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void CSprite::Erase()
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{
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if (m_saveBits.m_hObject == NULL)
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return;
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LONG dwStyle = ::GetWindowLong(m_pWnd->m_hWnd, GWL_STYLE);
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::SetWindowLong(m_pWnd->m_hWnd, GWL_STYLE, dwStyle & ~WS_CLIPCHILDREN);
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CClientDC dcWnd(m_pWnd);
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CDC dcSave;
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CBitmap* pOldBitmap;
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dcSave.CreateCompatibleDC(&dcWnd);
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pOldBitmap = dcSave.SelectObject(&m_saveBits);
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dcWnd.ExcludeUpdateRgn(m_pWnd);
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dcWnd.BitBlt(m_rect.left, m_rect.top, m_rect.Width(), m_rect.Height(),
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&dcSave, 0, 0, SRCCOPY);
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dcSave.SelectObject(pOldBitmap);
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::SetWindowLong(m_pWnd->m_hWnd, GWL_STYLE, dwStyle);
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}
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CHighlight::CHighlight()
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{
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m_bdrSize = 2;
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}
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CHighlight::CHighlight(CWnd *pWnd, CRect *pRect, int bdrSize)
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: CDragger(pWnd, pRect)
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{
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m_bdrSize = bdrSize;
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m_rect.InflateRect(m_bdrSize, m_bdrSize);
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}
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CHighlight::~CHighlight()
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{
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if (m_pWnd->m_hWnd != NULL && m_state != hidden)
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Hide();
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}
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void CHighlight::Draw()
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{
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m_pWnd->UpdateWindow();
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CClientDC dc(m_pWnd);
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CBrush *pOldBrush = dc.SelectObject(GetSysBrush(COLOR_HIGHLIGHT));
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// draw the top, right, bottom and left sides
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dc.PatBlt(m_rect.left + m_bdrSize, m_rect.top ,
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m_rect.Width() - m_bdrSize, m_bdrSize , PATCOPY);
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dc.PatBlt(m_rect.right - m_bdrSize , m_rect.top + m_bdrSize ,
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m_bdrSize , m_rect.Height() - m_bdrSize, PATCOPY);
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dc.PatBlt(m_rect.left , m_rect.bottom - m_bdrSize ,
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m_rect.Width() - m_bdrSize, m_bdrSize , PATCOPY);
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dc.PatBlt(m_rect.left , m_rect.top ,
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m_bdrSize , m_rect.Height() - m_bdrSize, PATCOPY);
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// restore the state of the DC
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dc.SelectObject(pOldBrush);
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}
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void CHighlight::Erase()
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{
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m_pWnd->InvalidateRect(&m_rect);
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m_pWnd->UpdateWindow();
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}
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