8f884a0dcc
wxGDIObject::Create/CloneGDIRefData() and implemented them for (almost) all ports git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50727 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
478 lines
10 KiB
C++
478 lines
10 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/gtk/region.cpp
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// Purpose:
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// Author: Robert Roebling
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// Modified: VZ at 05.10.00: use AllocExclusive(), comparison fixed
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// Id: $Id$
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// Copyright: (c) 1998 Robert Roebling
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#include "wx/region.h"
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#ifndef WX_PRECOMP
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#include "wx/log.h"
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#endif
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#include "wx/gtk/private.h"
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// ----------------------------------------------------------------------------
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// wxRegionRefData: private class containing the information about the region
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// ----------------------------------------------------------------------------
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class wxRegionRefData : public wxGDIRefData
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{
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public:
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wxRegionRefData()
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{
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m_region = NULL;
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}
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wxRegionRefData(const wxRegionRefData& refData)
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: wxGDIRefData()
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{
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m_region = gdk_region_copy(refData.m_region);
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}
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virtual ~wxRegionRefData()
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{
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if (m_region)
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gdk_region_destroy( m_region );
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}
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GdkRegion *m_region;
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};
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// ----------------------------------------------------------------------------
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// macros
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// ----------------------------------------------------------------------------
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#define M_REGIONDATA ((wxRegionRefData *)m_refData)
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#define M_REGIONDATA_OF(rgn) ((wxRegionRefData *)(rgn.m_refData))
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IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject)
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IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator,wxObject)
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// ----------------------------------------------------------------------------
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// wxRegion construction
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// ----------------------------------------------------------------------------
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#define M_REGIONDATA ((wxRegionRefData *)m_refData)
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void wxRegion::InitRect(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
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{
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GdkRectangle rect;
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rect.x = x;
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rect.y = y;
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rect.width = w;
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rect.height = h;
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m_refData = new wxRegionRefData();
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M_REGIONDATA->m_region = gdk_region_rectangle( &rect );
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}
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wxRegion::wxRegion( GdkRegion *region )
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{
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m_refData = new wxRegionRefData();
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M_REGIONDATA->m_region = gdk_region_copy( region );
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}
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wxRegion::wxRegion( size_t n, const wxPoint *points, int fillStyle )
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{
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GdkPoint *gdkpoints = new GdkPoint[n];
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for ( size_t i = 0 ; i < n ; i++ )
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{
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gdkpoints[i].x = points[i].x;
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gdkpoints[i].y = points[i].y;
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}
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m_refData = new wxRegionRefData();
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GdkRegion* reg = gdk_region_polygon
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(
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gdkpoints,
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n,
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fillStyle == wxWINDING_RULE ? GDK_WINDING_RULE
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: GDK_EVEN_ODD_RULE
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);
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M_REGIONDATA->m_region = reg;
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delete [] gdkpoints;
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}
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wxRegion::~wxRegion()
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{
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// m_refData unrefed in ~wxObject
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}
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wxGDIRefData *wxRegion::CreateGDIRefData() const
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{
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return new wxRegionRefData;
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}
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wxGDIRefData *wxRegion::CloneGDIRefData(const wxGDIRefData *data) const
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{
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return new wxRegionRefData(*(wxRegionRefData *)data);
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}
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// ----------------------------------------------------------------------------
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// wxRegion comparison
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// ----------------------------------------------------------------------------
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bool wxRegion::DoIsEqual(const wxRegion& region) const
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{
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return gdk_region_equal(M_REGIONDATA->m_region,
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M_REGIONDATA_OF(region)->m_region);
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}
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// ----------------------------------------------------------------------------
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// wxRegion operations
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// ----------------------------------------------------------------------------
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void wxRegion::Clear()
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{
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UnRef();
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}
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bool wxRegion::DoUnionWithRect(const wxRect& r)
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{
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// workaround for a strange GTK/X11 bug: taking union with an empty
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// rectangle results in an empty region which is definitely not what we
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// want
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if ( r.IsEmpty() )
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return true;
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if ( !m_refData )
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{
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InitRect(r.x, r.y, r.width, r.height);
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}
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else
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{
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AllocExclusive();
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GdkRectangle rect;
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rect.x = r.x;
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rect.y = r.y;
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rect.width = r.width;
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rect.height = r.height;
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gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
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}
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return true;
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}
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bool wxRegion::DoUnionWithRegion( const wxRegion& region )
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{
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wxCHECK_MSG( region.Ok(), false, _T("invalid region") );
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if (!m_refData)
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{
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m_refData = new wxRegionRefData();
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M_REGIONDATA->m_region = gdk_region_new();
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}
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else
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{
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AllocExclusive();
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}
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gdk_region_union( M_REGIONDATA->m_region, region.GetRegion() );
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return true;
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}
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bool wxRegion::DoIntersect( const wxRegion& region )
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{
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wxCHECK_MSG( region.Ok(), false, _T("invalid region") );
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if (!m_refData)
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{
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// intersecting with invalid region doesn't make sense
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return false;
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}
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AllocExclusive();
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gdk_region_intersect( M_REGIONDATA->m_region, region.GetRegion() );
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return true;
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}
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bool wxRegion::DoSubtract( const wxRegion& region )
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{
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wxCHECK_MSG( region.Ok(), false, _T("invalid region") );
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if (!m_refData)
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{
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// subtracting from an invalid region doesn't make sense
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return false;
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}
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AllocExclusive();
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gdk_region_subtract( M_REGIONDATA->m_region, region.GetRegion() );
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return true;
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}
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bool wxRegion::DoXor( const wxRegion& region )
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{
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wxCHECK_MSG( region.Ok(), false, _T("invalid region") );
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if (!m_refData)
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{
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return false;
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}
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AllocExclusive();
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gdk_region_xor( M_REGIONDATA->m_region, region.GetRegion() );
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return true;
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}
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bool wxRegion::DoOffset( wxCoord x, wxCoord y )
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{
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if (!m_refData)
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return false;
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AllocExclusive();
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gdk_region_offset( M_REGIONDATA->m_region, x, y );
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return true;
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}
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// ----------------------------------------------------------------------------
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// wxRegion tests
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// ----------------------------------------------------------------------------
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bool wxRegion::DoGetBox( wxCoord &x, wxCoord &y, wxCoord &w, wxCoord &h ) const
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{
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if ( m_refData )
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{
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GdkRectangle rect;
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gdk_region_get_clipbox( M_REGIONDATA->m_region, &rect );
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x = rect.x;
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y = rect.y;
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w = rect.width;
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h = rect.height;
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return true;
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}
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else
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{
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x = 0;
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y = 0;
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w = -1;
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h = -1;
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return false;
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}
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}
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bool wxRegion::IsEmpty() const
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{
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if (!m_refData)
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return true;
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return gdk_region_empty( M_REGIONDATA->m_region );
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}
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wxRegionContain wxRegion::DoContainsPoint( wxCoord x, wxCoord y ) const
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{
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if (!m_refData)
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return wxOutRegion;
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if (gdk_region_point_in( M_REGIONDATA->m_region, x, 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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wxRegionContain wxRegion::DoContainsRect(const wxRect& r) const
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{
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if (!m_refData)
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return wxOutRegion;
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GdkRectangle rect;
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rect.x = r.x;
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rect.y = r.y;
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rect.width = r.width;
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rect.height = r.height;
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GdkOverlapType res = gdk_region_rect_in( M_REGIONDATA->m_region, &rect );
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switch (res)
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{
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case GDK_OVERLAP_RECTANGLE_IN: return wxInRegion;
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case GDK_OVERLAP_RECTANGLE_OUT: return wxOutRegion;
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case GDK_OVERLAP_RECTANGLE_PART: return wxPartRegion;
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}
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return wxOutRegion;
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}
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GdkRegion *wxRegion::GetRegion() const
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{
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if (!m_refData)
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return (GdkRegion*) NULL;
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return M_REGIONDATA->m_region;
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}
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// ----------------------------------------------------------------------------
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// wxRegionIterator
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// ----------------------------------------------------------------------------
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wxRegionIterator::wxRegionIterator()
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{
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Init();
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Reset();
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}
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wxRegionIterator::wxRegionIterator( const wxRegion& region )
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{
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Init();
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Reset(region);
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}
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void wxRegionIterator::Init()
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{
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m_rects = NULL;
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m_numRects = 0;
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}
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wxRegionIterator::~wxRegionIterator()
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{
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wxDELETEA(m_rects);
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}
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void wxRegionIterator::CreateRects( const wxRegion& region )
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{
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wxDELETEA(m_rects);
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m_numRects = 0;
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GdkRegion *gdkregion = region.GetRegion();
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if (!gdkregion)
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return;
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GdkRectangle *gdkrects = NULL;
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gint numRects = 0;
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gdk_region_get_rectangles( gdkregion, &gdkrects, &numRects );
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m_numRects = numRects;
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if (numRects)
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{
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m_rects = new wxRect[m_numRects];
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for (size_t i=0; i < m_numRects; ++i)
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{
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GdkRectangle &gr = gdkrects[i];
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wxRect &wr = m_rects[i];
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wr.x = gr.x;
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wr.y = gr.y;
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wr.width = gr.width;
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wr.height = gr.height;
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}
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}
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g_free( gdkrects );
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}
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void wxRegionIterator::Reset( const wxRegion& region )
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{
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m_region = region;
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CreateRects(region);
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Reset();
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}
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bool wxRegionIterator::HaveRects() const
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{
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return m_current < m_numRects;
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}
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wxRegionIterator& wxRegionIterator::operator ++ ()
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{
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if (HaveRects())
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++m_current;
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return *this;
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}
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wxRegionIterator wxRegionIterator::operator ++ (int)
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{
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wxRegionIterator tmp = *this;
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if (HaveRects())
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++m_current;
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return tmp;
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}
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wxCoord wxRegionIterator::GetX() const
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{
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wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
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return m_rects[m_current].x;
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}
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wxCoord wxRegionIterator::GetY() const
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{
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wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
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return m_rects[m_current].y;
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}
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wxCoord wxRegionIterator::GetW() const
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{
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wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
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return m_rects[m_current].width;
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}
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wxCoord wxRegionIterator::GetH() const
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{
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wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
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return m_rects[m_current].height;
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}
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wxRect wxRegionIterator::GetRect() const
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{
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wxRect r;
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if( HaveRects() )
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r = m_rects[m_current];
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return r;
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}
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wxRegionIterator& wxRegionIterator::operator=(const wxRegionIterator& ri)
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{
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wxDELETEA(m_rects);
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m_current = ri.m_current;
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m_numRects = ri.m_numRects;
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if ( m_numRects )
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{
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m_rects = new wxRect[m_numRects];
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for ( unsigned int n = 0; n < m_numRects; n++ )
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m_rects[n] = ri.m_rects[n];
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}
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else
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{
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m_rects = NULL;
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}
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return *this;
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}
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