added some wxMSW stuff
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@9 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Karsten Ballüder
410
src/msw/region.cpp
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410
src/msw/region.cpp
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/////////////////////////////////////////////////////////////////////////////
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// File: region.cpp
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// Purpose: Region handling for wxWindows/X11
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// Author: Markus Holzem
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// Created: Fri Oct 24 10:46:34 MET 1997
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// RCS-ID: $Id$
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// Copyright: (c) 1997 Julian Smart and Markus Holzem
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifdef __GNUG__
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#pragma implementation "region.h"
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#endif
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#include "wx/msw/region.h"
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#include "wx/gdicmn.h"
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#include <windows.h>
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#if !USE_SHARED_LIBRARY
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IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject)
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IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator, wxObject)
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#endif
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//-----------------------------------------------------------------------------
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// wxRegionRefData implementation
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//-----------------------------------------------------------------------------
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class WXDLLEXPORT wxRegionRefData : public wxGDIRefData {
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public:
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wxRegionRefData(void)
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{
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}
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wxRegionRefData(const wxRegionRefData& data)
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{
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#if defined(__WIN32__)
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DWORD noBytes = ::GetRegionData(data.m_region, 0, NULL);
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RGNDATA *rgnData = (RGNDATA*) new char[noBytes];
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::GetRegionData(data.m_region, noBytes, rgnData);
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m_region = ::ExtCreateRegion(NULL, noBytes, rgnData);
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delete[] (char*) rgnData;
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#else
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RECT rect;
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::GetRgnBox(data.m_region, &rect);
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m_region = ::CreateRectRgnIndirect(&rect);
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#endif
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}
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~wxRegionRefData(void)
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{
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::DeleteObject(m_region);
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m_region = 0;
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}
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HRGN m_region;
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};
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#define M_REGION (((wxRegionRefData*)m_refData)->m_region)
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//-----------------------------------------------------------------------------
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// wxRegion
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//-----------------------------------------------------------------------------
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/*!
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* Create an empty region.
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*/
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wxRegion::wxRegion(void)
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{
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m_refData = new wxRegionRefData;
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M_REGION = ::CreateRectRgn(0, 0, 0, 0);
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}
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wxRegion::wxRegion(long x, long y, long w, long h)
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{
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m_refData = new wxRegionRefData;
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M_REGION = ::CreateRectRgn(x, y, x + w, y + h);
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}
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wxRegion::wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight)
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{
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m_refData = new wxRegionRefData;
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M_REGION = ::CreateRectRgn(topLeft.x, topLeft.y, bottomRight.x, bottomRight.y);
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}
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wxRegion::wxRegion(const wxRect& rect)
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{
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m_refData = new wxRegionRefData;
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M_REGION = ::CreateRectRgn(rect.GetLeft(), rect.GetTop(), rect.GetRight(), rect.GetBottom());
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}
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/*!
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* Destroy the region.
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*/
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wxRegion::~wxRegion(void)
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{
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// m_refData unrefed in ~wxObject
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}
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//-----------------------------------------------------------------------------
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//# Modify region
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//-----------------------------------------------------------------------------
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//! Clear current region
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void wxRegion::Clear(void)
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{
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UnRef();
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}
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//! Combine rectangle (x, y, w, h) with this.
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bool wxRegion::Combine(long x, long y, long width, long height, wxRegionOp op)
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{
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// Don't change shared data
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if (!m_refData) {
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m_refData = new wxRegionRefData();
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} else if (m_refData->GetRefCount() > 1) {
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wxRegionRefData* ref = (wxRegionRefData*)m_refData;
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UnRef();
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m_refData = new wxRegionRefData(*ref);
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}
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// If ref count is 1, that means it's 'ours' anyway so no action.
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HRGN rectRegion = ::CreateRectRgn(x, y, x + width, y + height);
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int mode = 0;
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switch (op)
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{
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case wxRGN_AND: mode = RGN_AND; break ;
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case wxRGN_OR: mode = RGN_OR; break ;
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case wxRGN_XOR: mode = RGN_XOR; break ;
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case wxRGN_DIFF: mode = RGN_DIFF; break ;
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case wxRGN_COPY:
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default:
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mode = RGN_COPY; break ;
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}
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bool success = (ERROR != ::CombineRgn(M_REGION, M_REGION, rectRegion, mode));
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::DeleteObject(rectRegion);
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return success;
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}
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//! Union /e region with this.
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bool wxRegion::Combine(const wxRegion& region, wxRegionOp op)
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{
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if (region.Empty())
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return FALSE;
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// Don't change shared data
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if (!m_refData) {
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m_refData = new wxRegionRefData();
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} else if (m_refData->GetRefCount() > 1) {
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wxRegionRefData* ref = (wxRegionRefData*)m_refData;
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UnRef();
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m_refData = new wxRegionRefData(*ref);
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}
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int mode = 0;
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switch (op)
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{
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case wxRGN_AND: mode = RGN_AND; break ;
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case wxRGN_OR: mode = RGN_OR; break ;
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case wxRGN_XOR: mode = RGN_XOR; break ;
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case wxRGN_DIFF: mode = RGN_DIFF; break ;
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case wxRGN_COPY:
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default:
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mode = RGN_COPY; break ;
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}
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return (ERROR != ::CombineRgn(M_REGION, M_REGION, ((wxRegionRefData*)region.m_refData)->m_region, mode));
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}
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bool wxRegion::Combine(const wxRect& rect, wxRegionOp op)
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{
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return Combine(rect.GetLeft(), rect.GetTop(), rect.GetWidth(), rect.GetHeight(), op);
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}
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//-----------------------------------------------------------------------------
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//# Information on region
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//-----------------------------------------------------------------------------
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// Outer bounds of region
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void wxRegion::GetBox(long& x, long& y, long&w, long &h) const
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{
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if (m_refData) {
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RECT rect;
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::GetRgnBox(M_REGION, & rect);
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x = rect.left;
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y = rect.top;
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w = rect.right - rect.left;
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h = rect.bottom - rect.top;
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} else {
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x = y = w = h = 0;
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}
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}
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wxRect wxRegion::GetBox(void) const
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{
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long x, y, w, h;
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GetBox(x, y, w, h);
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return wxRect(x, y, w, h);
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}
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// Is region empty?
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bool wxRegion::Empty(void) const
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{
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if (M_REGION == 0)
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return TRUE;
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long x, y, w, h;
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GetBox(x, y, w, h);
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return ((w == 0) && (h == 0));
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}
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//-----------------------------------------------------------------------------
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//# Tests
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//-----------------------------------------------------------------------------
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// Does the region contain the point (x,y)?
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wxRegionContain wxRegion::Contains(long x, long y) const
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{
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if (!m_refData)
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return wxOutRegion;
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if (::PtInRegion(M_REGION, (int) x, (int) y))
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return wxInRegion;
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else
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return wxOutRegion;
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}
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// Does the region contain the point pt?
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wxRegionContain wxRegion::Contains(const wxPoint& pt) const
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{
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if (!m_refData)
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return wxOutRegion;
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if (::PtInRegion(M_REGION, (int) pt.x, (int) pt.y))
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return wxInRegion;
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else
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return wxOutRegion;
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}
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// Does the region contain the rectangle (x, y, w, h)?
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wxRegionContain wxRegion::Contains(long x, long y, long w, long h) const
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{
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if (!m_refData)
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return wxOutRegion;
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RECT rect;
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rect.left = x;
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rect.top = y;
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rect.right = x + w;
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rect.bottom = y + h;
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if (::RectInRegion(M_REGION, & rect))
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return wxInRegion;
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else
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return wxOutRegion;
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}
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// Does the region contain the rectangle rect
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wxRegionContain wxRegion::Contains(const wxRect& rect) const
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{
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if (!m_refData)
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return wxOutRegion;
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long x, y, w, h;
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x = rect.x;
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y = rect.y;
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w = rect.GetWidth();
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h = rect.GetHeight();
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return Contains(x, y, w, h);
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}
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///////////////////////////////////////////////////////////////////////////////
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// //
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// wxRegionIterator //
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// //
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///////////////////////////////////////////////////////////////////////////////
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/*!
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* Initialize empty iterator
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*/
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wxRegionIterator::wxRegionIterator(void) : m_current(0), m_numRects(0), m_rects(NULL)
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{
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}
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wxRegionIterator::~wxRegionIterator(void)
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{
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if (m_rects)
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delete[] m_rects;
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}
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/*!
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* Initialize iterator for region
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*/
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wxRegionIterator::wxRegionIterator(const wxRegion& region)
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{
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m_rects = NULL;
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Reset(region);
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}
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/*!
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* Reset iterator for a new /e region.
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*/
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void wxRegionIterator::Reset(const wxRegion& region)
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{
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m_current = 0;
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m_region = region;
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if (m_rects)
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delete[] m_rects;
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m_rects = NULL;
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if (m_region.Empty())
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m_numRects = 0;
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else
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{
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#if defined(__WIN32__)
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DWORD noBytes = ::GetRegionData(((wxRegionRefData*)region.m_refData)->m_region, 0, NULL);
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RGNDATA *rgnData = (RGNDATA*) new char[noBytes];
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::GetRegionData(((wxRegionRefData*)region.m_refData)->m_region, noBytes, rgnData);
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RGNDATAHEADER* header = (RGNDATAHEADER*) rgnData;
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m_rects = new wxRect[header->nCount];
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RECT* rect = (RECT*) (rgnData + sizeof(RGNDATAHEADER)) ;
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uint i;
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for (i = 0; i < header->nCount; i++)
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{
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m_rects[i] = wxRect(rect->left, rect->top,
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rect->right - rect->left, rect->bottom - rect->top);
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rect += sizeof(RECT);
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}
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m_numRects = header->nCount;
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delete[] (char*) rgnData;
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#else
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RECT rect;
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::GetRgnBox(((wxRegionRefData*)region.m_refData)->m_region, &rect);
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m_rects = new wxRect[1];
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m_rects[0].x = rect.left;
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m_rects[0].y = rect.top;
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m_rects[0].width = rect.right - rect.left;
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m_rects[0].height = rect.bottom - rect.top;
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m_numRects = 1;
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#endif
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}
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}
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/*!
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* Increment iterator. The rectangle returned is the one after the
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* incrementation.
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*/
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void wxRegionIterator::operator ++ (void)
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{
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if (m_current < m_numRects)
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++m_current;
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}
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/*!
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* Increment iterator. The rectangle returned is the one before the
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* incrementation.
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*/
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void wxRegionIterator::operator ++ (int)
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{
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if (m_current < m_numRects)
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++m_current;
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}
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long wxRegionIterator::GetX(void) const
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{
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if (m_current < m_numRects)
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return m_rects[m_current].x;
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return 0;
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}
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long wxRegionIterator::GetY(void) const
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{
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if (m_current < m_numRects)
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return m_rects[m_current].y;
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return 0;
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}
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long wxRegionIterator::GetW(void) const
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{
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if (m_current < m_numRects)
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return m_rects[m_current].width ;
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return 0;
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}
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long wxRegionIterator::GetH(void) const
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{
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if (m_current < m_numRects)
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return m_rects[m_current].height;
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return 0;
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}
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