X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/57f2b902bc98b0764d9cd830bdaad2d6213123c2..571d2e0f232be3f7220c485c7e72eccfb87f2855:/src/gtk1/region.cpp

diff --git a/src/gtk1/region.cpp b/src/gtk1/region.cpp
index e1394a48b4..80fd038c6d 100644
--- a/src/gtk1/region.cpp
+++ b/src/gtk1/region.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        gtk/region.cpp
+// Name:        src/gtk1/region.cpp
 // Purpose:
 // Author:      Robert Roebling
 // Modified:    VZ at 05.10.00: use AllocExclusive(), comparison fixed
@@ -12,21 +12,21 @@
 // declarations
 // ============================================================================
 
-#ifdef __GNUG__
-    #pragma implementation "region.h"
-#endif
-
 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------
 
-#include "wx/log.h"
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
 
 #include "wx/region.h"
 
-#include "wx/gtk/private.h"
+#ifndef WX_PRECOMP
+    #include "wx/log.h"
+#endif
+
+#include "wx/gtk1/private.h"
 
-#ifndef __WXGTK20__
 
 // ----------------------------------------------------------------------------
 // wxGdkRegion: creates a new region in ctor and destroys in dtor
@@ -44,7 +44,6 @@ private:
     GdkRegion *m_region;
 };
 
-#endif // __WXGTK20__
 
 // ----------------------------------------------------------------------------
 // wxRegionRefData: private class containing the information about the region
@@ -61,14 +60,10 @@ public:
     wxRegionRefData(const wxRegionRefData& refData)
         : wxObjectRefData()
     {
-#ifdef __WXGTK20__
-        m_region = gdk_region_copy(refData.m_region);
-#else
         m_region = gdk_regions_union(wxGdkRegion(), refData.m_region);
-#endif
     }
 
-    ~wxRegionRefData()
+    virtual ~wxRegionRefData()
     {
         if (m_region)
             gdk_region_destroy( m_region );
@@ -103,21 +98,13 @@ void wxRegion::InitRect(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
 
     m_refData = new wxRegionRefData();
 
-#ifdef __WXGTK20__
-    M_REGIONDATA->m_region = gdk_region_rectangle( &rect );
-#else
     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
 }
 
 wxRegion::wxRegion( size_t n, const wxPoint *points, int fillStyle )
@@ -163,7 +150,7 @@ wxObjectRefData *wxRegion::CloneRefData(const wxObjectRefData *data) const
 // wxRegion comparison
 // ----------------------------------------------------------------------------
 
-bool wxRegion::operator==( const wxRegion& region )
+bool wxRegion::operator==( const wxRegion& region ) const
 {
     if (m_refData == region.m_refData) return TRUE;
 
@@ -185,32 +172,29 @@ void wxRegion::Clear()
 
 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;
+    // 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)
+    if ( !m_refData )
     {
-        m_refData = new wxRegionRefData();
-#ifdef __WXGTK20__
-        M_REGIONDATA->m_region = gdk_region_rectangle( &rect );
-#else
-        M_REGIONDATA->m_region = gdk_region_union_with_rect(wxGdkRegion(), &rect);
-#endif
+        InitRect(x, y, width, height);
     }
     else
     {
         AllocExclusive();
 
-#ifdef __WXGTK20__
-        gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
-#else
+        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;
-#endif
     }
 
     return TRUE;
@@ -236,13 +220,9 @@ bool wxRegion::Union( const wxRegion& region )
         AllocExclusive();
     }
 
-#ifdef __WXGTK20__
-    gdk_region_union( M_REGIONDATA->m_region, region.GetRegion() );
-#else
     GdkRegion *reg = gdk_regions_union( M_REGIONDATA->m_region, region.GetRegion() );
     gdk_region_destroy( M_REGIONDATA->m_region );
     M_REGIONDATA->m_region = reg;
-#endif
 
     return TRUE;
 }
@@ -268,24 +248,15 @@ bool wxRegion::Intersect( const wxRegion& region )
 
     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;
     }
 
-#ifdef __WXGTK20__
-    gdk_region_intersect( M_REGIONDATA->m_region, region.GetRegion() );
-#else
+    AllocExclusive();
+
     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;
 }
@@ -309,21 +280,15 @@ bool wxRegion::Subtract( const wxRegion& region )
 
     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;
     }
 
-#ifdef __WXGTK20__
-    gdk_region_subtract( M_REGIONDATA->m_region, region.GetRegion() );
-#else
+    AllocExclusive();
+
     GdkRegion *reg = gdk_regions_subtract( M_REGIONDATA->m_region, region.GetRegion() );
     gdk_region_destroy( M_REGIONDATA->m_region );
     M_REGIONDATA->m_region = reg;
-#endif
 
     return TRUE;
 }
@@ -347,21 +312,26 @@ bool wxRegion::Xor( const wxRegion& region )
 
     if (!m_refData)
     {
-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
-    }
-    else
-    {
-        AllocExclusive();
+        return FALSE;
     }
 
-#ifdef __WXGTK20__
-    gdk_region_xor( M_REGIONDATA->m_region, region.GetRegion() );
-#else
+    AllocExclusive();
+
     GdkRegion *reg = gdk_regions_xor( M_REGIONDATA->m_region, region.GetRegion() );
     gdk_region_destroy( M_REGIONDATA->m_region );
     M_REGIONDATA->m_region = reg;
-#endif
+
+    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;
 }
@@ -397,18 +367,6 @@ 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)
@@ -470,8 +428,6 @@ GdkRegion *wxRegion::GetRegion() const
 // wxRegionIterator
 // ----------------------------------------------------------------------------
 
-#ifndef __WXGTK20__
-
 // the following structures must match the private structures
 // in X11 region code ( xc/lib/X11/region.h )
 
@@ -489,7 +445,6 @@ struct _XRegion {
     _XBox *rects, extents;
 };
 
-#endif
 
 class wxRIRefData: public wxObjectRefData
 {
@@ -520,27 +475,6 @@ void wxRIRefData::CreateRects( const wxRegion& region )
     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)
-        {
-            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)
     {
@@ -559,7 +493,6 @@ void wxRIRefData::CreateRects( const wxRegion& region )
             }
         }
     }
-#endif // GTK+ 2.0/1.x
 }
 
 wxRegionIterator::wxRegionIterator()
@@ -586,42 +519,48 @@ bool wxRegionIterator::HaveRects() const
     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
 {
-    if( !HaveRects() ) return 0;
+    wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
+
     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
 {
-    if( !HaveRects() ) return -1;
+    wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
+
     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;
 }
 
@@ -633,4 +572,3 @@ wxRect wxRegionIterator::GetRect() const
 
     return r;
 }
-