implemented HitTest() (modified patch 875957)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@25306 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -141,6 +141,7 @@ wxGTK:
 - allow calling wxWindow::SetFont if window not yet created
 - use same average character width as other ports when calculating dialog units
 - fixed mouse wheel handling under GTK2 (Hugh Fisher)
+- wxNotebook::HitTest() implemented (Daniel Lundqvist)
 
 wxMac:
 

include/wx/gtk/notebook.h

@@ -76,6 +76,8 @@ public:
     // sets the size of the tabs (assumes all tabs are the same size)
   void SetTabSize(const wxSize& sz);
 
+  virtual int HitTest(const wxPoint& pt, long *flags = NULL) const;
+
   // operations
   // ----------
     // remove one page from the notebook

include/wx/gtk1/notebook.h

@@ -76,6 +76,8 @@ public:
     // sets the size of the tabs (assumes all tabs are the same size)
   void SetTabSize(const wxSize& sz);
 
+  virtual int HitTest(const wxPoint& pt, long *flags = NULL) const;
+
   // operations
   // ----------
     // remove one page from the notebook

src/gtk/notebook.cpp

@@ -430,18 +430,17 @@ bool wxNotebook::SetPageImage( size_t page, int image )
     {
         /* Case 2) or 4). There is already an image in the gtkhbox. Let's find it */
 
-        GList *children = gtk_container_children(GTK_CONTAINER(nb_page->m_box));
+        GList *child = gtk_container_children(GTK_CONTAINER(nb_page->m_box));
-        for ( child = children; child; child = child->next )
+        while (child)
         {
             if (GTK_IS_PIXMAP(child->data))
             {
                 pixmapwid = GTK_WIDGET(child->data);
                 break;
             }
+            child = child->next;
         }
 
-        g_list_free(children);
-
         /* We should have the pixmap widget now */
         wxASSERT(pixmapwid != NULL);
 
@@ -672,6 +671,81 @@ bool wxNotebook::InsertPage( size_t position,
     return TRUE;
 }
 
+// helper for HitTest(): check if the point lies inside the given widget which
+// is the child of the notebook whose position and border size are passed as
+// parameters
+static bool
+IsPointInsideWidget(const wxPoint& pt, GtkWidget *w,
+                    gint x, gint y, gint border = 0)
+{
+    return
+        (pt.x >= w->allocation.x - x - border) &&
+        (pt.x <= w->allocation.x - x + border + w->allocation.width) &&
+        (pt.y >= w->allocation.y - y - border) &&
+        (pt.y <= w->allocation.y - y + border + w->allocation.height);
+}
+
+int wxNotebook::HitTest(const wxPoint& pt, long *flags) const
+{
+    const gint x = m_widget->allocation.x;
+    const gint y = m_widget->allocation.y;
+
+    const size_t count = GetPageCount();
+    for ( size_t i = 0; i < count; i++ )
+    {
+        wxGtkNotebookPage* nb_page = GetNotebookPage(i);
+        GtkWidget *box = nb_page->m_box;
+
+        // VZ: don't know how to find the border width in GTK+ 1.2
+#ifdef __WXGTK20__
+        const gint border = gtk_container_get_border_width(GTK_CONTAINER(box));
+#else // !GTK+ 2.x
+        const gint border = 0;
+#endif
+        if ( IsPointInsideWidget(pt, box, x, y, border) )
+        {
+            // ok, we're inside this tab -- now find out where, if needed
+            if ( flags )
+            {
+                GtkWidget *pixmap = NULL;
+
+                GList *children = gtk_container_children(GTK_CONTAINER(box));
+                for ( GList *child = children; child; child = child->next )
+                {
+                    if ( GTK_IS_PIXMAP(child->data) )
+                    {
+                        pixmap = GTK_WIDGET(child->data);
+                        break;
+                    }
+                }
+
+                if ( children )
+                    g_list_free(children);
+
+                if ( pixmap && IsPointInsideWidget(pt, pixmap, x, y) )
+                {
+                    *flags = wxNB_HITTEST_ONICON;
+                }
+                else if ( IsPointInsideWidget(pt, GTK_WIDGET(nb_page->m_label), x, y) )
+                {
+                    *flags = wxNB_HITTEST_ONLABEL;
+                }
+                else
+                {
+                    *flags = wxNB_HITTEST_ONITEM;
+                }
+            }
+
+            return i;
+        }
+    }
+
+    if ( flags )
+        *flags = wxNB_HITTEST_NOWHERE;
+
+    return wxNOT_FOUND;
+}
+
 void wxNotebook::OnNavigationKey(wxNavigationKeyEvent& event)
 {
     if (event.IsWindowChange())

src/gtk1/notebook.cpp

@@ -430,18 +430,17 @@ bool wxNotebook::SetPageImage( size_t page, int image )
     {
         /* Case 2) or 4). There is already an image in the gtkhbox. Let's find it */
 
-        GList *children = gtk_container_children(GTK_CONTAINER(nb_page->m_box));
+        GList *child = gtk_container_children(GTK_CONTAINER(nb_page->m_box));
-        for ( child = children; child; child = child->next )
+        while (child)
         {
             if (GTK_IS_PIXMAP(child->data))
             {
                 pixmapwid = GTK_WIDGET(child->data);
                 break;
             }
+            child = child->next;
         }
 
-        g_list_free(children);
-
         /* We should have the pixmap widget now */
         wxASSERT(pixmapwid != NULL);
 
@@ -672,6 +671,81 @@ bool wxNotebook::InsertPage( size_t position,
     return TRUE;
 }
 
+// helper for HitTest(): check if the point lies inside the given widget which
+// is the child of the notebook whose position and border size are passed as
+// parameters
+static bool
+IsPointInsideWidget(const wxPoint& pt, GtkWidget *w,
+                    gint x, gint y, gint border = 0)
+{
+    return
+        (pt.x >= w->allocation.x - x - border) &&
+        (pt.x <= w->allocation.x - x + border + w->allocation.width) &&
+        (pt.y >= w->allocation.y - y - border) &&
+        (pt.y <= w->allocation.y - y + border + w->allocation.height);
+}
+
+int wxNotebook::HitTest(const wxPoint& pt, long *flags) const
+{
+    const gint x = m_widget->allocation.x;
+    const gint y = m_widget->allocation.y;
+
+    const size_t count = GetPageCount();
+    for ( size_t i = 0; i < count; i++ )
+    {
+        wxGtkNotebookPage* nb_page = GetNotebookPage(i);
+        GtkWidget *box = nb_page->m_box;
+
+        // VZ: don't know how to find the border width in GTK+ 1.2
+#ifdef __WXGTK20__
+        const gint border = gtk_container_get_border_width(GTK_CONTAINER(box));
+#else // !GTK+ 2.x
+        const gint border = 0;
+#endif
+        if ( IsPointInsideWidget(pt, box, x, y, border) )
+        {
+            // ok, we're inside this tab -- now find out where, if needed
+            if ( flags )
+            {
+                GtkWidget *pixmap = NULL;
+
+                GList *children = gtk_container_children(GTK_CONTAINER(box));
+                for ( GList *child = children; child; child = child->next )
+                {
+                    if ( GTK_IS_PIXMAP(child->data) )
+                    {
+                        pixmap = GTK_WIDGET(child->data);
+                        break;
+                    }
+                }
+
+                if ( children )
+                    g_list_free(children);
+
+                if ( pixmap && IsPointInsideWidget(pt, pixmap, x, y) )
+                {
+                    *flags = wxNB_HITTEST_ONICON;
+                }
+                else if ( IsPointInsideWidget(pt, GTK_WIDGET(nb_page->m_label), x, y) )
+                {
+                    *flags = wxNB_HITTEST_ONLABEL;
+                }
+                else
+                {
+                    *flags = wxNB_HITTEST_ONITEM;
+                }
+            }
+
+            return i;
+        }
+    }
+
+    if ( flags )
+        *flags = wxNB_HITTEST_NOWHERE;
+
+    return wxNOT_FOUND;
+}
+
 void wxNotebook::OnNavigationKey(wxNavigationKeyEvent& event)
 {
     if (event.IsWindowChange())