Added implementations for two cases of wxSystemSettingsNative::GetMetric to

[wxWidgets.git] / src / gtk1 / region.cpp

diff --git a/src/gtk1/region.cpp b/src/gtk1/region.cpp
index 91b9d1f043d1d2ee727654e88e2e249eff098028..f9ac057cbe1d6ed514995bd9de0afac3b3d5ac36 100644 (file)
--- a/src/gtk1/region.cpp
+++ b/src/gtk1/region.cpp
@@ -26,6 +26,26 @@
 
 #include "wx/gtk/private.h"
 
 
 #include "wx/gtk/private.h"
 

+#ifndef __WXGTK20__
+
+// ----------------------------------------------------------------------------
+// wxGdkRegion: creates a new region in ctor and destroys in dtor
+// ----------------------------------------------------------------------------
+
+class wxGdkRegion
+{
+public:
+    wxGdkRegion() { m_region = gdk_region_new(); }
+    ~wxGdkRegion() { gdk_region_destroy(m_region); }
+
+    operator GdkRegion *() const { return m_region; }
+
+private:
+    GdkRegion *m_region;
+};
+
+#endif // __WXGTK20__
+

 // ----------------------------------------------------------------------------
 // wxRegionRefData: private class containing the information about the region
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxRegionRefData: private class containing the information about the region
 // ----------------------------------------------------------------------------


@@ -37,19 +57,17 @@ public:
     {
         m_region = NULL;
     }
     {
         m_region = NULL;
     }

-    
+

     wxRegionRefData(const wxRegionRefData& refData)
     wxRegionRefData(const wxRegionRefData& refData)

+        : wxObjectRefData()

     {
 #ifdef __WXGTK20__
         m_region = gdk_region_copy(refData.m_region);
 #else
     {
 #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;
+        m_region = gdk_regions_union(wxGdkRegion(), refData.m_region);

 #endif
     }
 #endif
     }

-    
+

     ~wxRegionRefData()
     {
         if (m_region)
     ~wxRegionRefData()
     {
         if (m_region)


@@ -66,8 +84,8 @@ public:
 #define M_REGIONDATA ((wxRegionRefData *)m_refData)
 #define M_REGIONDATA_OF(rgn) ((wxRegionRefData *)(rgn.m_refData))
 
 #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);
+IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject)
+IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator,wxObject)

 
 // ----------------------------------------------------------------------------
 // wxRegion construction
 
 // ----------------------------------------------------------------------------
 // wxRegion construction


@@ -82,15 +100,23 @@ void wxRegion::InitRect(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
     rect.y = y;
     rect.width = w;
     rect.height = h;
     rect.y = y;
     rect.width = w;
     rect.height = h;

-    
+

     m_refData = new wxRegionRefData();
     m_refData = new wxRegionRefData();

-    
+

 #ifdef __WXGTK20__
     M_REGIONDATA->m_region = gdk_region_rectangle( &rect );
 #else
 #ifdef __WXGTK20__
     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 );
+    M_REGIONDATA->m_region = gdk_region_union_with_rect( wxGdkRegion(), &rect );
+#endif
+}
+
+wxRegion::wxRegion( GdkRegion *region )
+{
+    m_refData = new wxRegionRefData();
+#ifdef __WXGTK20__
+    M_REGIONDATA->m_region = gdk_region_copy( region );
+#else
+    M_REGIONDATA->m_region = gdk_regions_union(wxGdkRegion(), region);

 #endif
 }
 
 #endif
 }
 


@@ -142,7 +168,7 @@ bool wxRegion::operator==( const wxRegion& region )
     if (m_refData == region.m_refData) return TRUE;
 
     if (!m_refData || !region.m_refData) return FALSE;
     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);
     // compare the regions themselves, not the pointers to ref data!
     return gdk_region_equal(M_REGIONDATA->m_region,
                             M_REGIONDATA_OF(region)->m_region);


@@ -159,27 +185,26 @@ void wxRegion::Clear()
 
 bool wxRegion::Union( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
 {
 
 bool wxRegion::Union( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
 {

-    GdkRectangle rect;
-    rect.x = x;
-    rect.y = y;
-    rect.width = width;
-    rect.height = height;
-    
-    if (!m_refData)
+    // 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 ( !width || !height )
+        return TRUE;
+
+    if ( !m_refData )

     {
     {

-        m_refData = new wxRegionRefData();
-#ifdef __WXGTK20__
-        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
+        InitRect(x, y, width, height);

     }
     else
     {
         AllocExclusive();
 
     }
     else
     {
         AllocExclusive();
 

+        GdkRectangle rect;
+        rect.x = x;
+        rect.y = y;
+        rect.width = width;
+        rect.height = height;
+

 #ifdef __WXGTK20__
         gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
 #else
 #ifdef __WXGTK20__
         gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
 #else


@@ -233,7 +258,7 @@ bool wxRegion::Intersect( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
 bool wxRegion::Intersect( const wxRect& rect )
 {
     wxRegion reg( rect );
 bool wxRegion::Intersect( const wxRect& rect )
 {
     wxRegion reg( rect );

-    
+

     return Intersect( reg );
 }
 
     return Intersect( reg );
 }
 


@@ -244,17 +269,12 @@ bool wxRegion::Intersect( const wxRegion& region )
 
     if (!m_refData)
     {
 
     if (!m_refData)
     {

-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
-        
-        // leave here 
-        return TRUE;
-    }
-    else
-    {
-        AllocExclusive();
+        // intersecting with invalid region doesn't make sense
+        return FALSE;

     }
 
     }
 

+    AllocExclusive();
+

 #ifdef __WXGTK20__
     gdk_region_intersect( M_REGIONDATA->m_region, region.GetRegion() );
 #else
 #ifdef __WXGTK20__
     gdk_region_intersect( M_REGIONDATA->m_region, region.GetRegion() );
 #else


@@ -285,14 +305,12 @@ bool wxRegion::Subtract( const wxRegion& region )
 
     if (!m_refData)
     {
 
     if (!m_refData)
     {

-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
-    }
-    else
-    {
-        AllocExclusive();
+        // subtracting from an invalid region doesn't make sense
+        return FALSE;

     }
 
     }
 

+    AllocExclusive();
+

 #ifdef __WXGTK20__
     gdk_region_subtract( M_REGIONDATA->m_region, region.GetRegion() );
 #else
 #ifdef __WXGTK20__
     gdk_region_subtract( M_REGIONDATA->m_region, region.GetRegion() );
 #else


@@ -323,14 +341,11 @@ bool wxRegion::Xor( const wxRegion& region )
 
     if (!m_refData)
     {
 
     if (!m_refData)
     {

-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
-    }
-    else
-    {
-        AllocExclusive();
+        return FALSE;

     }
 
     }
 

+    AllocExclusive();
+

 #ifdef __WXGTK20__
     gdk_region_xor( M_REGIONDATA->m_region, region.GetRegion() );
 #else
 #ifdef __WXGTK20__
     gdk_region_xor( M_REGIONDATA->m_region, region.GetRegion() );
 #else


@@ -342,6 +357,18 @@ bool wxRegion::Xor( const wxRegion& region )
     return TRUE;
 }
 
     return TRUE;
 }
 

+bool wxRegion::Offset( wxCoord x, wxCoord y )
+{
+    if (!m_refData)
+        return FALSE;
+
+    AllocExclusive();
+
+    gdk_region_offset( M_REGIONDATA->m_region, x, y );
+
+    return TRUE;
+}
+

 // ----------------------------------------------------------------------------
 // wxRegion tests
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxRegion tests
 // ----------------------------------------------------------------------------


@@ -373,18 +400,6 @@ wxRect wxRegion::GetBox() const
     return wxRect( x, y, w, h );
 }
 
     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)
 bool wxRegion::Empty() const
 {
     if (!m_refData)


@@ -465,7 +480,7 @@ struct _XRegion {
     _XBox *rects, extents;
 };
 
     _XBox *rects, extents;
 };
 

-#endif
+#endif // GTK+ 1.x

 
 class wxRIRefData: public wxObjectRefData
 {
 
 class wxRIRefData: public wxObjectRefData
 {


@@ -491,16 +506,16 @@ void wxRIRefData::CreateRects( const wxRegion& region )
     delete [] m_rects;
 
     Init();
     delete [] m_rects;
 
     Init();

-    
+

     GdkRegion *gdkregion = region.GetRegion();
     if (!gdkregion)
         return;
     GdkRegion *gdkregion = region.GetRegion();
     if (!gdkregion)
         return;

-    
+

 #ifdef __WXGTK20__
     GdkRectangle *gdkrects = NULL;
     gint numRects = 0;
     gdk_region_get_rectangles( gdkregion, &gdkrects, &numRects );
 #ifdef __WXGTK20__
     GdkRectangle *gdkrects = NULL;
     gint numRects = 0;
     gdk_region_get_rectangles( gdkregion, &gdkrects, &numRects );

-    
+

     m_numRects = numRects;
     if (numRects)
     {
     m_numRects = numRects;
     if (numRects)
     {


@@ -562,42 +577,48 @@ bool wxRegionIterator::HaveRects() const
     return m_current < ((wxRIRefData*)m_refData)->m_numRects;
 }
 
     return m_current < ((wxRIRefData*)m_refData)->m_numRects;
 }
 

-wxRegionIterator::operator bool () const
+wxRegionIterator& wxRegionIterator::operator ++ ()

 {
 {

-    return HaveRects();
-}
+    if (HaveRects())
+        ++m_current;

 
 

-void wxRegionIterator::operator ++ ()
-{
-    if (HaveRects()) ++m_current;
+    return *this;

 }
 
 }
 

-void wxRegionIterator::operator ++ (int)
+wxRegionIterator wxRegionIterator::operator ++ (int)

 {
 {

-    if (HaveRects()) ++m_current;
+    wxRegionIterator tmp = *this;
+    if (HaveRects())
+        ++m_current;
+
+    return tmp;

 }
 
 wxCoord wxRegionIterator::GetX() const
 {
 }
 
 wxCoord wxRegionIterator::GetX() const
 {

-    if( !HaveRects() ) return 0;
+    wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
+

     return ((wxRIRefData*)m_refData)->m_rects[m_current].x;
 }
 
 wxCoord wxRegionIterator::GetY() const
 {
     return ((wxRIRefData*)m_refData)->m_rects[m_current].x;
 }
 
 wxCoord wxRegionIterator::GetY() const
 {

-    if( !HaveRects() ) return 0;
+    wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
+

     return ((wxRIRefData*)m_refData)->m_rects[m_current].y;
 }
 
 wxCoord wxRegionIterator::GetW() const
 {
     return ((wxRIRefData*)m_refData)->m_rects[m_current].y;
 }
 
 wxCoord wxRegionIterator::GetW() const
 {

-    if( !HaveRects() ) return -1;
+    wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
+

     return ((wxRIRefData*)m_refData)->m_rects[m_current].width;
 }
 
 wxCoord wxRegionIterator::GetH() const
 {
     return ((wxRIRefData*)m_refData)->m_rects[m_current].width;
 }
 
 wxCoord wxRegionIterator::GetH() const
 {

-    if( !HaveRects() ) return -1;
+    wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
+

     return ((wxRIRefData*)m_refData)->m_rects[m_current].height;
 }
 
     return ((wxRIRefData*)m_refData)->m_rects[m_current].height;
 }