Add virtual ~wxAnyScrollHelperBase() to fix compiler warning.

[wxWidgets.git] / src / gtk / window.cpp

diff --git a/src/gtk/window.cpp b/src/gtk/window.cpp
index 14fe92ca2451e4058bb2dd02aeecb5e2ce4d33a9..e163078b989251a04f9295da18a772df2652b60b 100644 (file)
--- a/src/gtk/window.cpp
+++ b/src/gtk/window.cpp
@@ -1614,30 +1614,18 @@ gtk_window_motion_notify_callback( GtkWidget * WXUNUSED(widget),
 // "scroll_event" (mouse wheel event)
 //-----------------------------------------------------------------------------
 
 // "scroll_event" (mouse wheel event)
 //-----------------------------------------------------------------------------
 

-static gboolean
-window_scroll_event_hscrollbar(GtkWidget*, GdkEventScroll* gdk_event, wxWindow* win)
+// Compute lines/columns per action the same way as private GTK+ function
+// _gtk_range_get_wheel_delta()
+static inline int GetWheelScrollActionDelta(GtkRange* range)

 {
 {

-    if (gdk_event->direction != GDK_SCROLL_LEFT &&
-        gdk_event->direction != GDK_SCROLL_RIGHT)
-    {
-        return false;
-    }
-
-    GtkRange *range = win->m_scrollBar[wxWindow::ScrollDir_Horz];
-
-    if (range && gtk_widget_get_visible(GTK_WIDGET(range)))
+    int delta = 3;
+    if (range)

     {
         GtkAdjustment* adj = gtk_range_get_adjustment(range);
     {
         GtkAdjustment* adj = gtk_range_get_adjustment(range);

-        double delta = gtk_adjustment_get_step_increment(adj) * 3;
-        if (gdk_event->direction == GDK_SCROLL_LEFT)
-            delta = -delta;
-
-        gtk_range_set_value(range, gtk_adjustment_get_value(adj) + delta);
-
-        return TRUE;
+        const double page_size = gtk_adjustment_get_page_size(adj);
+        delta = wxRound(pow(page_size, 2.0 / 3.0));

     }
     }

-
-    return FALSE;
+    return delta;

 }
 
 static gboolean
 }
 
 static gboolean


@@ -1646,69 +1634,92 @@ window_scroll_event(GtkWidget*, GdkEventScroll* gdk_event, wxWindow* win)
     wxMouseEvent event(wxEVT_MOUSEWHEEL);
     InitMouseEvent(win, event, gdk_event);
 
     wxMouseEvent event(wxEVT_MOUSEWHEEL);
     InitMouseEvent(win, event, gdk_event);
 

-    // FIXME: Get these values from GTK or GDK
-    event.m_linesPerAction = 3;
-    event.m_columnsPerAction = 3;

     event.m_wheelDelta = 120;
 
     event.m_wheelDelta = 120;
 

-    // Determine the scroll direction.
-    switch (gdk_event->direction)
-    {
-        case GDK_SCROLL_UP:
-        case GDK_SCROLL_RIGHT:
-            event.m_wheelRotation = 120;
-            break;
-
-        case GDK_SCROLL_DOWN:
-        case GDK_SCROLL_LEFT:
-            event.m_wheelRotation = -120;
-            break;

 #if GTK_CHECK_VERSION(3,4,0)
 #if GTK_CHECK_VERSION(3,4,0)

-        case GDK_SCROLL_SMOOTH:
-            // TODO
-#endif
-        default:
-            return false;  // Unknown/unhandled direction
+    if (gdk_event->direction == GDK_SCROLL_SMOOTH)
+    {
+        bool processed_x = false;
+        if (gdk_event->delta_x)
+        {
+            event.m_wheelAxis = wxMOUSE_WHEEL_HORIZONTAL;
+            event.m_wheelRotation = int(event.m_wheelDelta * gdk_event->delta_x);
+            GtkRange* range = win->m_scrollBar[wxWindow::ScrollDir_Horz];
+            event.m_linesPerAction = GetWheelScrollActionDelta(range);
+            event.m_columnsPerAction = event.m_linesPerAction;
+            processed_x = win->GTKProcessEvent(event);
+        }
+        bool processed_y = false;
+        if (gdk_event->delta_y)
+        {
+            event.m_wheelAxis = wxMOUSE_WHEEL_VERTICAL;
+            event.m_wheelRotation = int(event.m_wheelDelta * -gdk_event->delta_y);
+            GtkRange* range = win->m_scrollBar[wxWindow::ScrollDir_Vert];
+            event.m_linesPerAction = GetWheelScrollActionDelta(range);
+            event.m_columnsPerAction = event.m_linesPerAction;
+            processed_y = win->GTKProcessEvent(event);
+        }
+        return processed_x || processed_y;

     }
     }

-
-    // And the scroll axis.
+#endif // GTK_CHECK_VERSION(3,4,0)
+    GtkRange *range;

     switch (gdk_event->direction)
     {
         case GDK_SCROLL_UP:
         case GDK_SCROLL_DOWN:
     switch (gdk_event->direction)
     {
         case GDK_SCROLL_UP:
         case GDK_SCROLL_DOWN:

+            range = win->m_scrollBar[wxWindow::ScrollDir_Vert];

             event.m_wheelAxis = wxMOUSE_WHEEL_VERTICAL;
             break;
             event.m_wheelAxis = wxMOUSE_WHEEL_VERTICAL;
             break;

-

         case GDK_SCROLL_LEFT:
         case GDK_SCROLL_RIGHT:
         case GDK_SCROLL_LEFT:
         case GDK_SCROLL_RIGHT:

+            range = win->m_scrollBar[wxWindow::ScrollDir_Horz];

             event.m_wheelAxis = wxMOUSE_WHEEL_HORIZONTAL;
             break;
             event.m_wheelAxis = wxMOUSE_WHEEL_HORIZONTAL;
             break;

-#if GTK_CHECK_VERSION(3,4,0)
-        case GDK_SCROLL_SMOOTH:
-            // TODO
-            break;
-#endif
+        default:
+            return false;

     }
 
     }
 

-    if (win->GTKProcessEvent(event))
-      return TRUE;
-
-    GtkRange *range = win->m_scrollBar[wxWindow::ScrollDir_Vert];
-
-    if (range && gtk_widget_get_visible(GTK_WIDGET(range)))
+    event.m_wheelRotation = event.m_wheelDelta;
+    if (gdk_event->direction == GDK_SCROLL_DOWN ||
+        gdk_event->direction == GDK_SCROLL_LEFT)

     {
     {

-        GtkAdjustment* adj = gtk_range_get_adjustment(range);
-        double delta = gtk_adjustment_get_step_increment(adj) * 3;
-        if (gdk_event->direction == GDK_SCROLL_UP)
-            delta = -delta;
+        event.m_wheelRotation = -event.m_wheelRotation;
+    }
+    event.m_linesPerAction = GetWheelScrollActionDelta(range);
+    event.m_columnsPerAction = event.m_linesPerAction;

 
 

-        gtk_range_set_value(range, gtk_adjustment_get_value(adj) + delta);
+    return win->GTKProcessEvent(event);
+}

 
 

-        return TRUE;
+#if GTK_CHECK_VERSION(3,4,0)
+static gboolean
+hscrollbar_scroll_event(GtkWidget* widget, GdkEventScroll* gdk_event, wxWindow* win)
+{
+    GdkEventScroll event2;
+    if (gdk_event->direction == GDK_SCROLL_SMOOTH && gdk_event->delta_x == 0)
+    {
+        memcpy(&event2, gdk_event, sizeof(event2));
+        event2.delta_x = event2.delta_y;
+        event2.delta_y = 0;
+        gdk_event = &event2;

     }
     }

+    return window_scroll_event(widget, gdk_event, win);
+}

 
 

-    return FALSE;
+static gboolean
+vscrollbar_scroll_event(GtkWidget* widget, GdkEventScroll* gdk_event, wxWindow* win)
+{
+    GdkEventScroll event2;
+    if (gdk_event->direction == GDK_SCROLL_SMOOTH && gdk_event->delta_y == 0)
+    {
+        memcpy(&event2, gdk_event, sizeof(event2));
+        event2.delta_y = event2.delta_x;
+        event2.delta_x = 0;
+        gdk_event = &event2;
+    }
+    return window_scroll_event(widget, gdk_event, win);

 }
 }

+#endif // GTK_CHECK_VERSION(3,4,0)

 
 //-----------------------------------------------------------------------------
 // "popup-menu"
 
 //-----------------------------------------------------------------------------
 // "popup-menu"


@@ -2638,12 +2649,21 @@ void wxWindowGTK::ConnectWidget( GtkWidget *widget )
 
     g_signal_connect (widget, "scroll_event",
                       G_CALLBACK (window_scroll_event), this);
 
     g_signal_connect (widget, "scroll_event",
                       G_CALLBACK (window_scroll_event), this);

-    if (m_scrollBar[ScrollDir_Horz])
-        g_signal_connect (m_scrollBar[ScrollDir_Horz], "scroll_event",
-                      G_CALLBACK (window_scroll_event_hscrollbar), this);
-    if (m_scrollBar[ScrollDir_Vert])
-        g_signal_connect (m_scrollBar[ScrollDir_Vert], "scroll_event",
-                      G_CALLBACK (window_scroll_event), this);
+    for (int i = 0; i < 2; i++)
+    {
+        GtkRange* range = m_scrollBar[i];
+        if (range)
+        {
+#if GTK_CHECK_VERSION(3,4,0)
+            GCallback cb = GCallback(i == ScrollDir_Horz
+                ? hscrollbar_scroll_event
+                : vscrollbar_scroll_event);
+#else
+            GCallback cb = GCallback(window_scroll_event);
+#endif
+            g_signal_connect(range, "scroll_event", cb, this);
+        }
+    }

 
     g_signal_connect (widget, "popup_menu",
                      G_CALLBACK (wxgtk_window_popup_menu_callback), this);
 
     g_signal_connect (widget, "popup_menu",
                      G_CALLBACK (wxgtk_window_popup_menu_callback), this);