/////////////////////////////////////////////////////////////////////////////
-// Name: region.cpp
+// Name: src/gtk1/region.cpp
// Purpose:
// Author: Robert Roebling
-// Created: 01/02/98
-// Id:
-// Copyright: (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
-// Licence: wxWindows licence
+// Modified: VZ at 05.10.00: use AllocExclusive(), comparison fixed
+// Id: $Id$
+// Copyright: (c) 1998 Robert Roebling
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
+// ============================================================================
+// declarations
+// ============================================================================
-#ifdef __GNUG__
-#pragma implementation "region.h"
-#endif
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
#include "wx/region.h"
-//-----------------------------------------------------------------------------
-// wxRegion
-//-----------------------------------------------------------------------------
+#ifndef WX_PRECOMP
+ #include "wx/log.h"
+#endif
+
+#include "wx/gtk1/private.h"
+
+
+// ----------------------------------------------------------------------------
+// wxGdkRegion: creates a new region in ctor and destroys in dtor
+// ----------------------------------------------------------------------------
-class wxRegionRefData: public wxObjectRefData
+class wxGdkRegion
{
- public:
-
- wxRegionRefData(void);
- ~wxRegionRefData(void);
-
- public:
+public:
+ wxGdkRegion() { m_region = gdk_region_new(); }
+ ~wxGdkRegion() { gdk_region_destroy(m_region); }
+
+ operator GdkRegion *() const { return m_region; }
+
+private:
+ GdkRegion *m_region;
+};
+
+
+// ----------------------------------------------------------------------------
+// wxRegionRefData: private class containing the information about the region
+// ----------------------------------------------------------------------------
+
+class wxRegionRefData : public wxGDIRefData
+{
+public:
+ wxRegionRefData()
+ {
+ m_region = NULL;
+ }
+
+ wxRegionRefData(const wxRegionRefData& refData)
+ : wxGDIRefData()
+ {
+ m_region = gdk_regions_union(wxGdkRegion(), refData.m_region);
+ }
+
+ virtual ~wxRegionRefData()
+ {
+ if (m_region)
+ gdk_region_destroy( m_region );
+ }
GdkRegion *m_region;
};
-wxRegionRefData::wxRegionRefData(void)
+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------
+
+#define M_REGIONDATA ((wxRegionRefData *)m_refData)
+#define M_REGIONDATA_OF(rgn) ((wxRegionRefData *)(rgn.m_refData))
+
+IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject)
+IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator,wxObject)
+
+// ----------------------------------------------------------------------------
+// wxRegion construction
+// ----------------------------------------------------------------------------
+
+#define M_REGIONDATA ((wxRegionRefData *)m_refData)
+
+void wxRegion::InitRect(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
{
- m_region = (GdkRegion *) NULL;
+ GdkRectangle rect;
+ rect.x = x;
+ rect.y = y;
+ rect.width = w;
+ rect.height = h;
+
+ m_refData = new wxRegionRefData();
+
+ M_REGIONDATA->m_region = gdk_region_union_with_rect( wxGdkRegion(), &rect );
}
-wxRegionRefData::~wxRegionRefData(void)
+wxRegion::wxRegion( GdkRegion *region )
{
- if (m_region) gdk_region_destroy( m_region );
+ m_refData = new wxRegionRefData();
+ M_REGIONDATA->m_region = gdk_regions_union(wxGdkRegion(), region);
}
-//-----------------------------------------------------------------------------
+wxRegion::wxRegion( size_t n, const wxPoint *points, int fillStyle )
+{
+ GdkPoint *gdkpoints = new GdkPoint[n];
+ for ( size_t i = 0 ; i < n ; i++ )
+ {
+ gdkpoints[i].x = points[i].x;
+ gdkpoints[i].y = points[i].y;
+ }
+
+ m_refData = new wxRegionRefData();
+
+ GdkRegion* reg = gdk_region_polygon
+ (
+ gdkpoints,
+ n,
+ fillStyle == wxWINDING_RULE ? GDK_WINDING_RULE
+ : GDK_EVEN_ODD_RULE
+ );
+
+ M_REGIONDATA->m_region = reg;
+
+ delete [] gdkpoints;
+}
-#define M_REGIONDATA ((wxRegionRefData *)m_refData)
+wxRegion::~wxRegion()
+{
+ // m_refData unrefed in ~wxObject
+}
-IMPLEMENT_DYNAMIC_CLASS(wxRegion,wxGDIObject);
-
-wxRegion::wxRegion( long x, long y, long w, long h )
+wxGDIRefData *wxRegion::CreateGDIRefData() const
{
- m_refData = new wxRegionRefData();
- GdkRegion *reg = gdk_region_new();
- GdkRectangle rect;
- rect.x = x;
- rect.y = y;
- rect.width = w;
- rect.height = h;
- M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
- gdk_region_destroy( reg );
+ return new wxRegionRefData;
}
-wxRegion::wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight )
+wxGDIRefData *wxRegion::CloneGDIRefData(const wxGDIRefData *data) const
{
- m_refData = new wxRegionRefData();
- GdkRegion *reg = gdk_region_new();
- GdkRectangle rect;
- rect.x = topLeft.x;
- rect.y = topLeft.y;
- rect.width = bottomRight.x - rect.x;
- rect.height = bottomRight.y - rect.y;
- M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
- gdk_region_destroy( reg );
+ return new wxRegionRefData(*(wxRegionRefData *)data);
}
-wxRegion::wxRegion( const wxRect& rect )
+// ----------------------------------------------------------------------------
+// wxRegion comparison
+// ----------------------------------------------------------------------------
+
+bool wxRegion::DoIsEqual(const wxRegion& region) const
{
- m_refData = new wxRegionRefData();
- GdkRegion *reg = gdk_region_new();
- GdkRectangle g_rect;
- g_rect.x = rect.x;
- g_rect.y = rect.y;
- g_rect.width = rect.width;
- g_rect.height = rect.height;
- M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &g_rect );
- gdk_region_destroy( reg );
+ return gdk_region_equal(M_REGIONDATA->m_region,
+ M_REGIONDATA_OF(region)->m_region);
}
-wxRegion::wxRegion(void)
+// ----------------------------------------------------------------------------
+// wxRegion operations
+// ----------------------------------------------------------------------------
+
+void wxRegion::Clear()
{
- m_refData = new wxRegionRefData();
- M_REGIONDATA->m_region = gdk_region_new();
+ UnRef();
}
-wxRegion::~wxRegion(void)
+bool wxRegion::DoUnionWithRect(const wxRect& r)
{
+ // workaround for a strange GTK/X11 bug: taking union with an empty
+ // rectangle results in an empty region which is definitely not what we
+ // want
+ if ( r.IsEmpty() )
+ return TRUE;
+
+ if ( !m_refData )
+ {
+ InitRect(r.x, r.y, r.width, r.height);
+ }
+ else
+ {
+ AllocExclusive();
+
+ GdkRectangle rect;
+ rect.x = r.x;
+ rect.y = r.y;
+ rect.width = r.width;
+ rect.height = r.height;
+
+ GdkRegion *reg = gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
+ gdk_region_destroy( M_REGIONDATA->m_region );
+ M_REGIONDATA->m_region = reg;
+ }
+
+ return TRUE;
}
-void wxRegion::Clear(void)
+bool wxRegion::DoUnionWithRegion( const wxRegion& region )
{
- UnRef();
- m_refData = new wxRegionRefData();
- M_REGIONDATA->m_region = gdk_region_new();
+ if (region.IsNull())
+ return FALSE;
+
+ if (!m_refData)
+ {
+ m_refData = new wxRegionRefData();
+ M_REGIONDATA->m_region = gdk_region_new();
+ }
+ else
+ {
+ AllocExclusive();
+ }
+
+ GdkRegion *reg = gdk_regions_union( M_REGIONDATA->m_region, region.GetRegion() );
+ gdk_region_destroy( M_REGIONDATA->m_region );
+ M_REGIONDATA->m_region = reg;
+
+ return TRUE;
}
-bool wxRegion::Union( long x, long y, long width, long height )
+bool wxRegion::DoIntersect( const wxRegion& region )
{
- GdkRectangle rect;
- rect.x = x;
- rect.y = y;
- rect.width = width;
- rect.height = height;
- GdkRegion *reg = gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
- gdk_region_destroy( M_REGIONDATA->m_region );
- M_REGIONDATA->m_region = reg;
- return TRUE;
+ wxCHECK_MSG( region.Ok(), false, _T("invalid region") );
+
+ if (!m_refData)
+ {
+ // intersecting with invalid region doesn't make sense
+ return FALSE;
+ }
+
+ AllocExclusive();
+
+ GdkRegion *reg = gdk_regions_intersect( M_REGIONDATA->m_region, region.GetRegion() );
+ gdk_region_destroy( M_REGIONDATA->m_region );
+ M_REGIONDATA->m_region = reg;
+
+ return TRUE;
}
-bool wxRegion::Union( const wxRect& rect )
+bool wxRegion::DoSubtract( const wxRegion& region )
{
- GdkRectangle g_rect;
- g_rect.x = rect.x;
- g_rect.y = rect.y;
- g_rect.width = rect.width;
- g_rect.height = rect.height;
- GdkRegion *reg = gdk_region_union_with_rect( M_REGIONDATA->m_region, &g_rect );
- gdk_region_destroy( M_REGIONDATA->m_region );
- M_REGIONDATA->m_region = reg;
- return TRUE;
+ wxCHECK_MSG( region.Ok(), false, _T("invalid region") );
+
+ if (!m_refData)
+ {
+ // subtracting from an invalid region doesn't make sense
+ return FALSE;
+ }
+
+ AllocExclusive();
+
+ GdkRegion *reg = gdk_regions_subtract( M_REGIONDATA->m_region, region.GetRegion() );
+ gdk_region_destroy( M_REGIONDATA->m_region );
+ M_REGIONDATA->m_region = reg;
+
+ return TRUE;
}
-bool wxRegion::Union( const wxRegion& region )
+bool wxRegion::DoXor( const wxRegion& region )
{
- GdkRegion *reg = gdk_regions_union( M_REGIONDATA->m_region, region.GetRegion() );
- gdk_region_destroy( M_REGIONDATA->m_region );
- M_REGIONDATA->m_region = reg;
- return TRUE;
+ wxCHECK_MSG( region.Ok(), false, _T("invalid region") );
+
+ if (!m_refData)
+ {
+ return FALSE;
+ }
+
+ AllocExclusive();
+
+ GdkRegion *reg = gdk_regions_xor( M_REGIONDATA->m_region, region.GetRegion() );
+ gdk_region_destroy( M_REGIONDATA->m_region );
+ M_REGIONDATA->m_region = reg;
+
+ return TRUE;
}
-bool wxRegion::Intersect( long x, long y, long width, long height )
+bool wxRegion::DoOffset( wxCoord x, wxCoord y )
{
- wxRegion reg( x, y, width, height );
- Intersect( reg );
- return TRUE;
+ if (!m_refData)
+ return FALSE;
+
+ AllocExclusive();
+
+ gdk_region_offset( M_REGIONDATA->m_region, x, y );
+
+ return TRUE;
}
-bool wxRegion::Intersect( const wxRect& rect )
+// ----------------------------------------------------------------------------
+// wxRegion tests
+// ----------------------------------------------------------------------------
+
+bool wxRegion::DoGetBox( wxCoord &x, wxCoord &y, wxCoord &w, wxCoord &h ) const
{
- wxRegion reg( rect );
- Intersect( reg );
- return TRUE;
+ if ( m_refData )
+ {
+ GdkRectangle rect;
+ gdk_region_get_clipbox( M_REGIONDATA->m_region, &rect );
+ x = rect.x;
+ y = rect.y;
+ w = rect.width;
+ h = rect.height;
+
+ return true;
+ }
+ else
+ {
+ x = 0;
+ y = 0;
+ w = -1;
+ h = -1;
+
+ return false;
+ }
}
-bool wxRegion::Intersect( const wxRegion& region )
+bool wxRegion::IsEmpty() const
{
- GdkRegion *reg = gdk_regions_intersect( M_REGIONDATA->m_region, region.GetRegion() );
- gdk_region_destroy( M_REGIONDATA->m_region );
- M_REGIONDATA->m_region = reg;
- return TRUE;
+ if (!m_refData)
+ return TRUE;
+
+ return gdk_region_empty( M_REGIONDATA->m_region );
}
-bool wxRegion::Subtract( long x, long y, long width, long height )
+wxRegionContain wxRegion::DoContainsPoint( wxCoord x, wxCoord y ) const
{
- wxRegion reg( x, y, width, height );
- Subtract( reg );
- return TRUE;
+ if (!m_refData)
+ return wxOutRegion;
+
+ if (gdk_region_point_in( M_REGIONDATA->m_region, x, y ))
+ return wxInRegion;
+ else
+ return wxOutRegion;
}
-bool wxRegion::Subtract( const wxRect& rect )
+wxRegionContain wxRegion::DoContainsRect(const wxRect& r) const
{
- wxRegion reg( rect );
- Subtract( reg );
- return TRUE;
+ if (!m_refData)
+ return wxOutRegion;
+
+ GdkRectangle rect;
+ rect.x = r.x;
+ rect.y = r.y;
+ rect.width = r.width;
+ rect.height = r.height;
+ GdkOverlapType res = gdk_region_rect_in( M_REGIONDATA->m_region, &rect );
+ switch (res)
+ {
+ case GDK_OVERLAP_RECTANGLE_IN: return wxInRegion;
+ case GDK_OVERLAP_RECTANGLE_OUT: return wxOutRegion;
+ case GDK_OVERLAP_RECTANGLE_PART: return wxPartRegion;
+ }
+ return wxOutRegion;
}
-bool wxRegion::Subtract( const wxRegion& region )
+GdkRegion *wxRegion::GetRegion() const
{
- GdkRegion *reg = gdk_regions_subtract( M_REGIONDATA->m_region, region.GetRegion() );
- gdk_region_destroy( M_REGIONDATA->m_region );
- M_REGIONDATA->m_region = reg;
- return TRUE;
+ if (!m_refData)
+ return (GdkRegion*) NULL;
+
+ return M_REGIONDATA->m_region;
}
-bool wxRegion::Xor( long x, long y, long width, long height )
+// ----------------------------------------------------------------------------
+// wxRegionIterator
+// ----------------------------------------------------------------------------
+
+// the following structures must match the private structures
+// in X11 region code ( xc/lib/X11/region.h )
+
+// this makes the Region type transparent
+// and we have access to the region rectangles
+
+#include <gdk/gdkprivate.h>
+
+struct _XBox {
+ short x1, x2, y1, y2;
+};
+
+struct _XRegion {
+ long size , numRects;
+ _XBox *rects, extents;
+};
+
+
+class wxRIRefData : public wxGDIRefData
{
- wxRegion reg( x, y, width, height );
- Xor( reg );
- return TRUE;
+public:
+ wxRIRefData() { Init(); }
+ virtual ~wxRIRefData();
+
+ void CreateRects( const wxRegion& r );
+
+ void Init() { m_rects = NULL; m_numRects = 0; }
+
+ wxRect *m_rects;
+ size_t m_numRects;
+};
+
+wxRIRefData::~wxRIRefData()
+{
+ delete [] m_rects;
}
-bool wxRegion::Xor( const wxRect& rect )
+void wxRIRefData::CreateRects( const wxRegion& region )
{
- wxRegion reg( rect );
- Xor( reg );
- return TRUE;
+ delete [] m_rects;
+
+ Init();
+
+ GdkRegion *gdkregion = region.GetRegion();
+ if (!gdkregion)
+ return;
+
+ Region r = ((GdkRegionPrivate *)gdkregion)->xregion;
+ if (r)
+ {
+ m_numRects = r->numRects;
+ if (m_numRects)
+ {
+ m_rects = new wxRect[m_numRects];
+ for (size_t i=0; i < m_numRects; ++i)
+ {
+ _XBox &xr = r->rects[i];
+ wxRect &wr = m_rects[i];
+ wr.x = xr.x1;
+ wr.y = xr.y1;
+ wr.width = xr.x2-xr.x1;
+ wr.height = xr.y2-xr.y1;
+ }
+ }
+ }
}
-bool wxRegion::Xor( const wxRegion& region )
+wxRegionIterator::wxRegionIterator()
{
- GdkRegion *reg = gdk_regions_xor( M_REGIONDATA->m_region, region.GetRegion() );
- gdk_region_destroy( M_REGIONDATA->m_region );
- M_REGIONDATA->m_region = reg;
- return TRUE;
+ m_refData = new wxRIRefData();
+ Reset();
}
-void wxRegion::GetBox( long& x, long& y, long&w, long &h ) const
+wxRegionIterator::wxRegionIterator( const wxRegion& region )
{
- x = 0;
- y = 0;
- w = -1;
- h = -1;
+ m_refData = new wxRIRefData();
+ Reset(region);
}
-wxRect wxRegion::GetBox(void) const
+void wxRegionIterator::Reset( const wxRegion& region )
{
- return wxRect( 0, 0, -1, -1 );
+ m_region = region;
+ ((wxRIRefData*)m_refData)->CreateRects(region);
+ Reset();
}
-bool wxRegion::Empty(void) const
+bool wxRegionIterator::HaveRects() const
{
- return gdk_region_empty( M_REGIONDATA->m_region );
+ return m_current < ((wxRIRefData*)m_refData)->m_numRects;
}
-wxRegionContain wxRegion::Contains( long x, long y ) const
+wxRegionIterator& wxRegionIterator::operator ++ ()
{
- if (gdk_region_point_in( M_REGIONDATA->m_region, x, y ))
- return wxInRegion;
- else
- return wxOutRegion;
+ if (HaveRects())
+ ++m_current;
+
+ return *this;
+}
+
+wxRegionIterator wxRegionIterator::operator ++ (int)
+{
+ wxRegionIterator tmp = *this;
+ if (HaveRects())
+ ++m_current;
+
+ return tmp;
+}
+
+wxCoord wxRegionIterator::GetX() const
+{
+ wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
+
+ return ((wxRIRefData*)m_refData)->m_rects[m_current].x;
+}
+
+wxCoord wxRegionIterator::GetY() const
+{
+ wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
+
+ return ((wxRIRefData*)m_refData)->m_rects[m_current].y;
}
-wxRegionContain wxRegion::Contains( long x, long y, long w, long h ) const
+wxCoord wxRegionIterator::GetW() const
{
- GdkRectangle rect;
- rect.x = x;
- rect.y = y;
- rect.width = w;
- rect.height = h;
- GdkOverlapType res = gdk_region_rect_in( M_REGIONDATA->m_region, &rect );
- switch (res)
- {
- case GDK_OVERLAP_RECTANGLE_IN: return wxInRegion;
- case GDK_OVERLAP_RECTANGLE_OUT: return wxOutRegion;
- case GDK_OVERLAP_RECTANGLE_PART: return wxPartRegion;
- }
- return wxOutRegion;
+ wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
+
+ return ((wxRIRefData*)m_refData)->m_rects[m_current].width;
}
-GdkRegion *wxRegion::GetRegion(void) const
+wxCoord wxRegionIterator::GetH() const
{
- return M_REGIONDATA->m_region;
+ wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
+
+ return ((wxRIRefData*)m_refData)->m_rects[m_current].height;
}
+wxRect wxRegionIterator::GetRect() const
+{
+ wxRect r;
+ if( HaveRects() )
+ r = ((wxRIRefData*)m_refData)->m_rects[m_current];
+
+ return r;
+}
projects / wxWidgets.git / blobdiff