X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/29149a64916d6fdc53e445adca9ef83bc58fb6c3..2d956b58023a4955313a1c1531bc70a0deb0b831:/src/gtk/region.cpp

diff --git a/src/gtk/region.cpp b/src/gtk/region.cpp
index 5c11a0acf3..f184e4d795 100644
--- a/src/gtk/region.cpp
+++ b/src/gtk/region.cpp
@@ -2,7 +2,7 @@
 // Name:        gtk/region.cpp
 // Purpose:
 // Author:      Robert Roebling
-// Modified:    VZ at 05.10.00: use Unshare(), comparison fixed
+// Modified:    VZ at 05.10.00: use AllocExclusive(), comparison fixed
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling
 // Licence:     wxWindows licence
@@ -20,21 +20,11 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#include "wx/region.h"
-
-#include <gdk/gdk.h>
-#include <gtk/gtk.h>
+#include "wx/log.h"
 
-// Unfortunately the new way of implementing the region iterator
-// doesn't work with GTK+ 2.0 or above (can't access a Region in
-// GdkPrivateRegion)
-#ifdef __WXGTK20__
-#define OLDCODE 1
-#else
-#define OLDCODE 0
-#endif
+#include "wx/region.h"
 
-#include "wx/log.h"
+#include "wx/gtk/private.h"
 
 // ----------------------------------------------------------------------------
 // wxRegionRefData: private class containing the information about the region
@@ -43,14 +33,30 @@
 class wxRegionRefData : public wxObjectRefData
 {
 public:
-    wxRegionRefData();
-    wxRegionRefData(const wxRegionRefData& refData);
-    virtual ~wxRegionRefData();
+    wxRegionRefData()
+    {
+        m_region = NULL;
+    }
+    
+    wxRegionRefData(const wxRegionRefData& refData)
+    {
+#ifdef __WXGTK20__
+        m_region = gdk_region_copy(refData.m_region);
+#else
+        m_region = gdk_region_new();
+        GdkRegion *regCopy = gdk_regions_union(m_region, refData.m_region);
+        gdk_region_destroy(m_region);
+        m_region = regCopy;
+#endif
+    }
+    
+    ~wxRegionRefData()
+    {
+        if (m_region)
+            gdk_region_destroy( m_region );
+    }
 
     GdkRegion  *m_region;
-#if OLDCODE
-    wxList      m_rects;
-#endif
 };
 
 // ----------------------------------------------------------------------------
@@ -63,159 +69,83 @@ public:
 IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject);
 IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator,wxObject);
 
-// ============================================================================
-// implementation
-// ============================================================================
-
-// ----------------------------------------------------------------------------
-// wxRegionRefData
-// ----------------------------------------------------------------------------
-
-wxRegionRefData::wxRegionRefData()
-{
-    m_region = (GdkRegion *) NULL;
-}
-
-wxRegionRefData::wxRegionRefData(const wxRegionRefData& refData)
-{
-#ifdef __WXGTK20__
-    m_region = gdk_region_copy(refData.m_region);
-#else
-    m_region = gdk_region_new();
-    GdkRegion *regCopy = gdk_regions_union(m_region, refData.m_region);
-    gdk_region_destroy(m_region);
-    m_region = regCopy;
-#endif
-
-#if OLDCODE
-    wxNode *node = refData.m_rects.First();
-    while (node)
-    {
-        wxRect *r = (wxRect*)node->Data();
-        m_rects.Append( (wxObject*) new wxRect(*r) );
-        node = node->Next();
-    }
-#endif
-}
-
-wxRegionRefData::~wxRegionRefData()
-{
-    if (m_region) gdk_region_destroy( m_region );
-
-#if OLDCODE
-    wxNode *node = m_rects.First();
-    while (node)
-    {
-        wxRect *r = (wxRect*)node->Data();
-        delete r;
-        node = node->Next();
-    }
-#endif
-}
-
 // ----------------------------------------------------------------------------
 // wxRegion construction
 // ----------------------------------------------------------------------------
 
 #define M_REGIONDATA ((wxRegionRefData *)m_refData)
 
-wxRegion::wxRegion()
+void wxRegion::InitRect(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
 {
-}
-
-wxRegion::wxRegion( wxCoord x, wxCoord y, wxCoord w, wxCoord h )
-{
-    m_refData = new wxRegionRefData();
-    GdkRegion *reg = gdk_region_new();
     GdkRectangle rect;
     rect.x = x;
     rect.y = y;
     rect.width = w;
     rect.height = h;
-#ifdef __WXGTK20__
-    gdk_region_union_with_rect( reg, &rect );
-    M_REGIONDATA->m_region = reg;
-#else
-    M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
-    gdk_region_destroy( reg );
-#endif
-#if OLDCODE
-    M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(x,y,w,h) );
-#endif
-}
-
-wxRegion::wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight )
-{
+    
     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;
+    
 #ifdef __WXGTK20__
-    gdk_region_union_with_rect( reg, &rect );
-    M_REGIONDATA->m_region = reg;
+    M_REGIONDATA->m_region = gdk_region_rectangle( &rect );
 #else
+    GdkRegion *reg = gdk_region_new();
     M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
     gdk_region_destroy( reg );
 #endif
-#if OLDCODE
-    M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(topLeft,bottomRight) );
-#endif
 }
 
-wxRegion::wxRegion( const wxRect& rect )
+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_new();
-    GdkRectangle g_rect;
-    g_rect.x = rect.x;
-    g_rect.y = rect.y;
-    g_rect.width = rect.width;
-    g_rect.height = rect.height;
-#ifdef __WXGTK20__
-    gdk_region_union_with_rect( reg, &g_rect );
+
+    GdkRegion* reg = gdk_region_polygon
+                     (
+                        gdkpoints,
+                        n,
+                        fillStyle == wxWINDING_RULE ? GDK_WINDING_RULE
+                                                    : GDK_EVEN_ODD_RULE
+                     );
+
     M_REGIONDATA->m_region = reg;
-#else
-    M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &g_rect );
-    gdk_region_destroy( reg );
-#endif
-#if OLDCODE
-    M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(rect.x,rect.y,rect.width,rect.height) );
-#endif
+
+    delete [] gdkpoints;
 }
 
 wxRegion::~wxRegion()
 {
+    // m_refData unrefed in ~wxObject
 }
 
-bool wxRegion::operator==( const wxRegion& region )
+wxObjectRefData *wxRegion::CreateRefData() const
 {
-    // VZ: compare the regions themselves, not the pointers to ref data!
-    return gdk_region_equal(M_REGIONDATA->m_region,
-                            M_REGIONDATA_OF(region)->m_region);
+    return new wxRegionRefData;
 }
 
-bool wxRegion::operator != ( const wxRegion& region )
+wxObjectRefData *wxRegion::CloneRefData(const wxObjectRefData *data) const
 {
-    return !(*this == region);
+    return new wxRegionRefData(*(wxRegionRefData *)data);
 }
 
-void wxRegion::Unshare()
+// ----------------------------------------------------------------------------
+// wxRegion comparison
+// ----------------------------------------------------------------------------
+
+bool wxRegion::operator==( const wxRegion& region )
 {
-    if ( !m_refData )
-    {
-        m_refData = new wxRegionRefData;
-        M_REGIONDATA->m_region = gdk_region_new();
-    }
-    else if ( m_refData->GetRefCount() > 1 )
-    {
-        wxRegionRefData *refData = new wxRegionRefData(*M_REGIONDATA);
-        UnRef();
-        m_refData = refData;
-    }
-    //else: we're not shared
+    if (m_refData == region.m_refData) return TRUE;
+
+    if (!m_refData || !region.m_refData) return FALSE;
+    
+    // compare the regions themselves, not the pointers to ref data!
+    return gdk_region_equal(M_REGIONDATA->m_region,
+                            M_REGIONDATA_OF(region)->m_region);
 }
 
 // ----------------------------------------------------------------------------
@@ -234,21 +164,21 @@ bool wxRegion::Union( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
     rect.y = y;
     rect.width = width;
     rect.height = height;
+    
     if (!m_refData)
     {
         m_refData = new wxRegionRefData();
-        GdkRegion *reg = gdk_region_new();
 #ifdef __WXGTK20__
-        gdk_region_union_with_rect( reg, &rect );
-        M_REGIONDATA->m_region = reg;
+        M_REGIONDATA->m_region = gdk_region_rectangle( &rect );
 #else
+        GdkRegion *reg = gdk_region_new();
         M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
         gdk_region_destroy( reg );
 #endif
     }
     else
     {
-        Unshare();
+        AllocExclusive();
 
 #ifdef __WXGTK20__
         gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
@@ -259,10 +189,6 @@ bool wxRegion::Union( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
 #endif
     }
 
-#if OLDCODE
-    M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(x,y,width,height) );
-#endif
-
     return TRUE;
 }
 
@@ -276,7 +202,15 @@ bool wxRegion::Union( const wxRegion& region )
     if (region.IsNull())
         return FALSE;
 
-    Unshare();
+    if (!m_refData)
+    {
+        m_refData = new wxRegionRefData();
+        M_REGIONDATA->m_region = gdk_region_new();
+    }
+    else
+    {
+        AllocExclusive();
+    }
 
 #ifdef __WXGTK20__
     gdk_region_union( M_REGIONDATA->m_region, region.GetRegion() );
@@ -286,16 +220,6 @@ bool wxRegion::Union( const wxRegion& region )
     M_REGIONDATA->m_region = reg;
 #endif
 
-#if OLDCODE
-    wxNode *node = region.GetRectList()->First();
-    while (node)
-    {
-        wxRect *r = (wxRect*)node->Data();
-        M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(r->x,r->y,r->width,r->height) );
-        node = node->Next();
-    }
-#endif
-
     return TRUE;
 }
 
@@ -309,28 +233,10 @@ bool wxRegion::Intersect( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
 bool wxRegion::Intersect( const wxRect& rect )
 {
     wxRegion reg( rect );
+    
     return Intersect( reg );
 }
 
-// this helper function just computes the region intersection without updating
-// the list of rectangles each region maintaints: this allows us to call it
-// from Intersect() itself without going into infinite recursion as we would
-// if we called Intersect() itself recursively
-bool wxRegion::IntersectRegionOnly(const wxRegion& region)
-{
-    Unshare();
-
-#ifdef __WXGTK20__
-    gdk_region_intersect( M_REGIONDATA->m_region, region.GetRegion() );
-#else
-    GdkRegion *reg = gdk_regions_intersect( M_REGIONDATA->m_region, region.GetRegion() );
-    gdk_region_destroy( M_REGIONDATA->m_region );
-    M_REGIONDATA->m_region = reg;
-#endif
-
-    return TRUE;
-}
-
 bool wxRegion::Intersect( const wxRegion& region )
 {
     if (region.IsNull())
@@ -340,38 +246,22 @@ bool wxRegion::Intersect( const wxRegion& region )
     {
         m_refData = new wxRegionRefData();
         M_REGIONDATA->m_region = gdk_region_new();
+        
+        // leave here 
         return TRUE;
     }
-
-    if ( !IntersectRegionOnly(region) )
+    else
     {
-        GetRectList()->Clear();
-
-        return FALSE;
+        AllocExclusive();
     }
 
-    // we need to update the rect list as well
-    wxList& list = *GetRectList();
-    wxNode *node = list.First();
-    while (node)
-    {
-        wxRect *r = (wxRect*)node->Data();
-
-        wxRegion regCopy = region;
-        if ( regCopy.IntersectRegionOnly(*r) )
-        {
-            // replace the node with the intersection
-            *r = regCopy.GetBox();
-        }
-        else
-        {
-            // TODO remove the rect from the list
-            r->width = 0;
-            r->height = 0;
-        }
-
-        node = node->Next();
-    }
+#ifdef __WXGTK20__
+    gdk_region_intersect( M_REGIONDATA->m_region, region.GetRegion() );
+#else
+    GdkRegion *reg = gdk_regions_intersect( M_REGIONDATA->m_region, region.GetRegion() );
+    gdk_region_destroy( M_REGIONDATA->m_region );
+    M_REGIONDATA->m_region = reg;
+#endif
 
     return TRUE;
 }
@@ -398,8 +288,10 @@ bool wxRegion::Subtract( const wxRegion& region )
         m_refData = new wxRegionRefData();
         M_REGIONDATA->m_region = gdk_region_new();
     }
-
-    Unshare();
+    else
+    {
+        AllocExclusive();
+    }
 
 #ifdef __WXGTK20__
     gdk_region_subtract( M_REGIONDATA->m_region, region.GetRegion() );
@@ -436,7 +328,7 @@ bool wxRegion::Xor( const wxRegion& region )
     }
     else
     {
-        Unshare();
+        AllocExclusive();
     }
 
 #ifdef __WXGTK20__
@@ -447,16 +339,6 @@ bool wxRegion::Xor( const wxRegion& region )
     M_REGIONDATA->m_region = reg;
 #endif
 
-#if OLDCODE
-    wxNode *node = region.GetRectList()->First();
-    while (node)
-    {
-        wxRect *r = (wxRect*)node->Data();
-        M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(r->x,r->y,r->width,r->height) );
-        node = node->Next();
-    }
-#endif
-
     return TRUE;
 }
 
@@ -491,6 +373,18 @@ wxRect wxRegion::GetBox() const
     return wxRect( x, y, w, h );
 }
 
+bool wxRegion::Offset( wxCoord x, wxCoord y )
+{
+    if (!m_refData)
+        return FALSE;
+
+    AllocExclusive();
+
+    gdk_region_offset( M_REGIONDATA->m_region, x, y );
+
+    return TRUE;
+}
+
 bool wxRegion::Empty() const
 {
     if (!m_refData)
@@ -548,93 +442,11 @@ GdkRegion *wxRegion::GetRegion() const
     return M_REGIONDATA->m_region;
 }
 
-wxList *wxRegion::GetRectList() const
-{
-#if OLDCODE
-    if (!m_refData)
-        return (wxList*) NULL;
-
-    return &(M_REGIONDATA->m_rects);
-#else
-    return (wxList*) NULL;
-#endif
-}
-
 // ----------------------------------------------------------------------------
 // wxRegionIterator
 // ----------------------------------------------------------------------------
 
-#if OLDCODE
-
-wxRegionIterator::wxRegionIterator()
-{
-    Reset();
-}
-
-wxRegionIterator::wxRegionIterator( const wxRegion& region )
-{
-    Reset(region);
-}
-
-void wxRegionIterator::Reset( const wxRegion& region )
-{
-    m_region = region;
-    Reset();
-}
-
-wxRegionIterator::operator bool () const
-{
-    return m_region.GetRectList() && m_current < (size_t)m_region.GetRectList()->Number();
-}
-
-bool wxRegionIterator::HaveRects() const
-{
-    return m_region.GetRectList() && m_current < (size_t)m_region.GetRectList()->Number();
-}
-
-void wxRegionIterator::operator ++ ()
-{
-    if (HaveRects()) ++m_current;
-}
-
-void wxRegionIterator::operator ++ (int)
-{
-    if (HaveRects()) ++m_current;
-}
-
-wxCoord wxRegionIterator::GetX() const
-{
-    wxNode *node = m_region.GetRectList()->Nth( m_current );
-    if (!node) return 0;
-    wxRect *r = (wxRect*)node->Data();
-    return r->x;
-}
-
-wxCoord wxRegionIterator::GetY() const
-{
-    wxNode *node = m_region.GetRectList()->Nth( m_current );
-    if (!node) return 0;
-    wxRect *r = (wxRect*)node->Data();
-    return r->y;
-}
-
-wxCoord wxRegionIterator::GetW() const
-{
-    wxNode *node = m_region.GetRectList()->Nth( m_current );
-    if (!node) return 0;
-    wxRect *r = (wxRect*)node->Data();
-    return r->width;
-}
-
-wxCoord wxRegionIterator::GetH() const
-{
-    wxNode *node = m_region.GetRectList()->Nth( m_current );
-    if (!node) return 0;
-    wxRect *r = (wxRect*)node->Data();
-    return r->height;
-}
-
-#else
+#ifndef __WXGTK20__
 
 // the following structures must match the private structures
 // in X11 region code ( xc/lib/X11/region.h )
@@ -642,6 +454,8 @@ wxCoord wxRegionIterator::GetH() const
 // 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;
 };
@@ -651,6 +465,8 @@ struct _XRegion {
     _XBox *rects, extents;
 };
 
+#endif
+
 class wxRIRefData: public wxObjectRefData
 {
 public:
@@ -669,34 +485,57 @@ wxRIRefData::~wxRIRefData()
     delete m_rects;
 }
 
-#include <gdk/gdkprivate.h>
-
 void wxRIRefData::CreateRects( const wxRegion& region )
 {
-  if( m_rects )
-    delete m_rects;
-  m_rects   = 0;
-  m_numRects= 0;
-  GdkRegion *gdkregion= region.GetRegion();
-  if( gdkregion ){
-    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 )
+    if (m_rects)
+      delete m_rects;
+
+    m_rects = 0;
+    m_numRects = 0;
+    
+    GdkRegion *gdkregion = region.GetRegion();
+    if (!gdkregion) return;
+    
+#ifdef __WXGTK20__
+    GdkRectangle *gdkrects = NULL;
+    gint numRects = 0;
+    gdk_region_get_rectangles( gdkregion, &gdkrects, &numRects );
+    
+    m_numRects = numRects;
+    if (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;
+            GdkRectangle &gr = gdkrects[i];
+            wxRect &wr = m_rects[i];
+            wr.x = gr.x;
+            wr.y = gr.y;
+            wr.width = gr.width;
+            wr.height = gr.height;
         }
-      }
     }
-  }
+    g_free( gdkrects );
+#else // GTK+ 1.x
+    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;
+            }
+        }
+    }
+#endif // GTK+ 2.0/1.x
 }
 
 wxRegionIterator::wxRegionIterator()
@@ -765,13 +604,9 @@ wxCoord wxRegionIterator::GetH() const
 wxRect wxRegionIterator::GetRect() const
 {
     wxRect r;
-    wxNode *node = m_region.GetRectList()->Nth( m_current );
-
-    if (node)
-        r = *((wxRect*)node->Data());
+    if( HaveRects() )
+        r = ((wxRIRefData*)m_refData)->m_rects[m_current];
 
     return r;
 }
 
-#endif
-