Use wxFS_SEEKABLE flag loading images.

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

diff --git a/src/gtk/window.cpp b/src/gtk/window.cpp
index e1b0b87036044c3564ed361f621a55d40f635493..1e4523f340272f80d631e5f32598ee704218a08b 100644 (file)
--- a/src/gtk/window.cpp
+++ b/src/gtk/window.cpp
@@ -183,14 +183,12 @@
 
    Cursors, too, have been a constant source of pleasure. The main difficulty
    is that a GdkWindow inherits a cursor if the programmer sets a new cursor
 
    Cursors, too, have been a constant source of pleasure. The main difficulty
    is that a GdkWindow inherits a cursor if the programmer sets a new cursor

-   for the parent. To prevent this from doing too much harm, I use idle time
-   to set the cursor over and over again, starting from the toplevel windows
-   and ending with the youngest generation (speaking of parent and child windows).
+   for the parent. To prevent this from doing too much harm, SetCursor calls
+   GTKUpdateCursor, which will recursively re-set the cursors of all child windows.

    Also don't forget that cursors (like much else) are connected to GdkWindows,
    not GtkWidgets and that the "window" field of a GtkWidget might very well
    point to the GdkWindow of the parent widget (-> "window-less widget") and
    that the two obviously have very different meanings.
    Also don't forget that cursors (like much else) are connected to GdkWindows,
    not GtkWidgets and that the "window" field of a GtkWidget might very well
    point to the GdkWindow of the parent widget (-> "window-less widget") and
    that the two obviously have very different meanings.

-

 */
 
 //-----------------------------------------------------------------------------
 */
 
 //-----------------------------------------------------------------------------


@@ -307,6 +305,9 @@ expose_event_border(GtkWidget* widget, GdkEventExpose* gdk_event, wxWindow* win)
     if (gdk_event->window != gtk_widget_get_parent_window(win->m_wxwindow))
         return false;
 
     if (gdk_event->window != gtk_widget_get_parent_window(win->m_wxwindow))
         return false;
 

+    if (!win->IsShown())
+        return false;
+

     const GtkAllocation& alloc = win->m_wxwindow->allocation;
     const int x = alloc.x;
     const int y = alloc.y;
     const GtkAllocation& alloc = win->m_wxwindow->allocation;
     const int x = alloc.x;
     const int y = alloc.y;


@@ -679,15 +680,57 @@ static void wxFillOtherKeyEventFields(wxKeyEvent& event,
 
     event.SetTimestamp( gdk_event->time );
     event.SetId(win->GetId());
 
     event.SetTimestamp( gdk_event->time );
     event.SetId(win->GetId());

+

     event.m_shiftDown = (gdk_event->state & GDK_SHIFT_MASK) != 0;
     event.m_controlDown = (gdk_event->state & GDK_CONTROL_MASK) != 0;
     event.m_altDown = (gdk_event->state & GDK_MOD1_MASK) != 0;
     event.m_metaDown = (gdk_event->state & GDK_META_MASK) != 0;
     event.m_shiftDown = (gdk_event->state & GDK_SHIFT_MASK) != 0;
     event.m_controlDown = (gdk_event->state & GDK_CONTROL_MASK) != 0;
     event.m_altDown = (gdk_event->state & GDK_MOD1_MASK) != 0;
     event.m_metaDown = (gdk_event->state & GDK_META_MASK) != 0;

+
+    // Normally we take the state of modifiers directly from the low level GDK
+    // event but unfortunately GDK uses a different convention from MSW for the
+    // key events corresponding to the modifier keys themselves: in it, when
+    // e.g. Shift key is pressed, GDK_SHIFT_MASK is not set while it is set
+    // when Shift is released. Under MSW the situation is exactly reversed and
+    // the modifier corresponding to the key is set when it is pressed and
+    // unset when it is released. To ensure consistent behaviour between
+    // platforms (and because it seems to make slightly more sense, although
+    // arguably both behaviours are reasonable) we follow MSW here.
+    //
+    // Final notice: we set the flags to the desired value instead of just
+    // inverting them because they are not set correctly (i.e. in the same way
+    // as for the real events generated by the user) for wxUIActionSimulator-
+    // produced events and it seems better to keep that class code the same
+    // among all platforms and fix the discrepancy here instead of adding
+    // wxGTK-specific code to wxUIActionSimulator.
+    const bool isPress = gdk_event->type == GDK_KEY_PRESS;
+    switch ( gdk_event->keyval )
+    {
+        case GDK_Shift_L:
+        case GDK_Shift_R:
+            event.m_shiftDown = isPress;
+            break;
+
+        case GDK_Control_L:
+        case GDK_Control_R:
+            event.m_controlDown = isPress;
+            break;
+
+        case GDK_Alt_L:
+        case GDK_Alt_R:
+            event.m_altDown = isPress;
+            break;
+
+        case GDK_Meta_L:
+        case GDK_Meta_R:
+        case GDK_Super_L:
+        case GDK_Super_R:
+            event.m_metaDown = isPress;
+            break;
+    }
+

     event.m_rawCode = (wxUint32) gdk_event->keyval;
     event.m_rawCode = (wxUint32) gdk_event->keyval;

-    event.m_rawFlags = 0;
-#if wxUSE_UNICODE
-    event.m_uniChar = gdk_keyval_to_unicode(gdk_event->keyval);
-#endif
+    event.m_rawFlags = gdk_event->hardware_keycode;
+

     wxGetMousePosition( &x, &y );
     win->ScreenToClient( &x, &y );
     event.m_x = x;
     wxGetMousePosition( &x, &y );
     win->ScreenToClient( &x, &y );
     event.m_x = x;


@@ -790,16 +833,21 @@ wxTranslateGTKKeyEventToWx(wxKeyEvent& event,
     if ( !key_code )
         return false;
 
     if ( !key_code )
         return false;
 

-    // now fill all the other fields
-    wxFillOtherKeyEventFields(event, win, gdk_event);
-

     event.m_keyCode = key_code;
     event.m_keyCode = key_code;

+

 #if wxUSE_UNICODE
 #if wxUSE_UNICODE

-    if ( gdk_event->type == GDK_KEY_PRESS ||  gdk_event->type == GDK_KEY_RELEASE )
+    event.m_uniChar = gdk_keyval_to_unicode(key_code ? key_code : keysym);
+    if ( !event.m_uniChar && event.m_keyCode <= WXK_DELETE )

     {
     {

-        event.m_uniChar = key_code;
+        // Set Unicode key code to the ASCII equivalent for compatibility. E.g.
+        // let RETURN generate the key event with both key and Unicode key
+        // codes of 13.
+        event.m_uniChar = event.m_keyCode;

     }
     }

-#endif
+#endif // wxUSE_UNICODE
+
+    // now fill all the other fields
+    wxFillOtherKeyEventFields(event, win, gdk_event);

 
     return true;
 }
 
     return true;
 }


@@ -821,6 +869,37 @@ struct wxGtkIMData
     }
 };
 
     }
 };
 

+namespace
+{
+
+// Send wxEVT_CHAR_HOOK event to the parent of the window and if it wasn't
+// processed, send wxEVT_CHAR to the window itself. Return true if either of
+// them was handled.
+bool
+SendCharHookAndCharEvents(const wxKeyEvent& event, wxWindow *win)
+{
+    // wxEVT_CHAR_HOOK must be sent to the top level parent window to allow it
+    // to handle key events in all of its children.
+    wxWindow * const parent = wxGetTopLevelParent(win);
+    if ( parent )
+    {
+        // We need to make a copy of the event object because it is
+        // modified while it's handled, notably its WasProcessed() flag
+        // is set after it had been processed once.
+        wxKeyEvent eventCharHook(event);
+        eventCharHook.SetEventType(wxEVT_CHAR_HOOK);
+        if ( parent->HandleWindowEvent(eventCharHook) )
+            return true;
+    }
+
+    // As above, make a copy of the event first.
+    wxKeyEvent eventChar(event);
+    eventChar.SetEventType(wxEVT_CHAR);
+    return win->HandleWindowEvent(eventChar);
+}
+
+} // anonymous namespace
+

 extern "C" {
 static gboolean
 gtk_window_key_press_callback( GtkWidget *WXUNUSED(widget),
 extern "C" {
 static gboolean
 gtk_window_key_press_callback( GtkWidget *WXUNUSED(widget),


@@ -848,8 +927,10 @@ gtk_window_key_press_callback( GtkWidget *WXUNUSED(widget),
         return_after_IM = true;
     }
 
         return_after_IM = true;
     }
 

-    if ((!ret) && (win->m_imData != NULL))
+    if (!ret && win->m_imData)

     {
     {

+        win->m_imData->lastKeyEvent = gdk_event;
+

         // We should let GTK+ IM filter key event first. According to GTK+ 2.0 API
         // docs, if IM filter returns true, no further processing should be done.
         // we should send the key_down event anyway.
         // We should let GTK+ IM filter key event first. According to GTK+ 2.0 API
         // docs, if IM filter returns true, no further processing should be done.
         // we should send the key_down event anyway.


@@ -937,21 +1018,7 @@ gtk_window_key_press_callback( GtkWidget *WXUNUSED(widget),
 #endif
             }
 
 #endif
             }
 

-            // Implement OnCharHook by checking ancestor top level windows
-            wxWindow *parent = win;
-            while (parent && !parent->IsTopLevel())
-                parent = parent->GetParent();
-            if (parent)
-            {
-                event.SetEventType( wxEVT_CHAR_HOOK );
-                ret = parent->HandleWindowEvent( event );
-            }
-
-            if (!ret)
-            {
-                event.SetEventType(wxEVT_CHAR);
-                ret = win->HandleWindowEvent( event );
-            }
+            ret = SendCharHookAndCharEvents(event, win);

         }
     }
 
         }
     }
 


@@ -983,13 +1050,6 @@ gtk_wxwindow_commit_cb (GtkIMContext * WXUNUSED(context),
     if( data.empty() )
         return;
 
     if( data.empty() )
         return;
 

-    bool ret = false;
-
-    // Implement OnCharHook by checking ancestor top level windows
-    wxWindow *parent = window;
-    while (parent && !parent->IsTopLevel())
-        parent = parent->GetParent();
-

     for( wxString::const_iterator pstr = data.begin(); pstr != data.end(); ++pstr )
     {
 #if wxUSE_UNICODE
     for( wxString::const_iterator pstr = data.begin(); pstr != data.end(); ++pstr )
     {
 #if wxUSE_UNICODE


@@ -1017,17 +1077,7 @@ gtk_wxwindow_commit_cb (GtkIMContext * WXUNUSED(context),
 #endif
         }
 
 #endif
         }
 

-        if (parent)
-        {
-            event.SetEventType( wxEVT_CHAR_HOOK );
-            ret = parent->HandleWindowEvent( event );
-        }
-
-        if (!ret)
-        {
-            event.SetEventType(wxEVT_CHAR);
-            ret = window->HandleWindowEvent( event );
-        }
+        SendCharHookAndCharEvents(event, window);

     }
 }
 }
     }
 }
 }


@@ -1847,6 +1897,8 @@ gtk_window_realized_callback(GtkWidget* widget, wxWindow* win)
     wxWindowCreateEvent event( win );
     event.SetEventObject( win );
     win->GTKProcessEvent( event );
     wxWindowCreateEvent event( win );
     event.SetEventObject( win );
     win->GTKProcessEvent( event );

+
+    win->GTKUpdateCursor(true, false);

 }
 
 //-----------------------------------------------------------------------------
 }
 
 //-----------------------------------------------------------------------------


@@ -2565,38 +2617,6 @@ void wxWindowGTK::OnInternalIdle()
         m_needsStyleChange = false;
     }
 
         m_needsStyleChange = false;
     }
 

-    wxCursor cursor = m_cursor;
-    if (g_globalCursor.Ok()) cursor = g_globalCursor;
-
-    if (cursor.Ok())
-    {
-        /* I now set the cursor anew in every OnInternalIdle call
-           as setting the cursor in a parent window also effects the
-           windows above so that checking for the current cursor is
-           not possible. */
-
-        if (m_wxwindow && (m_wxwindow != m_widget))
-        {
-            GdkWindow* window = GTKGetDrawingWindow();
-            if (window)
-                gdk_window_set_cursor( window, cursor.GetCursor() );
-
-            if (!g_globalCursor.Ok())
-                cursor = *wxSTANDARD_CURSOR;
-
-            window = m_widget->window;
-            if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
-                gdk_window_set_cursor( window, cursor.GetCursor() );
-
-        }
-        else if ( m_widget )
-        {
-            GdkWindow *window = m_widget->window;
-            if ( window && !GTK_WIDGET_NO_WINDOW(m_widget) )
-               gdk_window_set_cursor( window, cursor.GetCursor() );
-        }
-    }
-

     if (wxUpdateUIEvent::CanUpdate(this) && IsShownOnScreen())
         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 }
     if (wxUpdateUIEvent::CanUpdate(this) && IsShownOnScreen())
         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 }


@@ -2672,10 +2692,9 @@ void wxWindowGTK::DoGetClientSize( int *width, int *height ) const
             }
         }
 
             }
         }
 

-        int border_x, border_y;
-        WX_PIZZA(m_wxwindow)->get_border_widths(border_x, border_y);
-        w -= 2 * border_x;
-        h -= 2 * border_y;
+        const wxSize sizeBorders = DoGetBorderSize();
+        w -= sizeBorders.x;
+        h -= sizeBorders.y;

 
         if (w < 0)
             w = 0;
 
         if (w < 0)
             w = 0;


@@ -2687,6 +2706,17 @@ void wxWindowGTK::DoGetClientSize( int *width, int *height ) const
     if (height) *height = h;
 }
 
     if (height) *height = h;
 }
 

+wxSize wxWindowGTK::DoGetBorderSize() const
+{
+    if ( !m_wxwindow )
+        return wxWindowBase::DoGetBorderSize();
+
+    int x, y;
+    WX_PIZZA(m_wxwindow)->get_border_widths(x, y);
+
+    return 2*wxSize(x, y);
+}
+

 void wxWindowGTK::DoGetPosition( int *x, int *y ) const
 {
     wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
 void wxWindowGTK::DoGetPosition( int *x, int *y ) const
 {
     wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );


@@ -3429,33 +3459,40 @@ bool wxWindowGTK::SetCursor( const wxCursor &cursor )
     return true;
 }
 
     return true;
 }
 

-void wxWindowGTK::GTKUpdateCursor()
+void wxWindowGTK::GTKUpdateCursor(bool update_self /*=true*/, bool recurse /*=true*/)

 {
 {

-    wxCursor cursor(g_globalCursor.Ok() ? g_globalCursor : GetCursor());
-    if ( cursor.Ok() )
+    if (update_self)

     {
     {

-        wxArrayGdkWindows windowsThis;
-        GdkWindow * const winThis = GTKGetWindow(windowsThis);
-        if ( winThis )
-        {
-            gdk_window_set_cursor(winThis, cursor.GetCursor());
-        }
-        else
+        wxCursor cursor(g_globalCursor.Ok() ? g_globalCursor : GetCursor());
+        if ( cursor.Ok() )

         {
         {

-            const size_t count = windowsThis.size();
-            for ( size_t n = 0; n < count; n++ )
+            wxArrayGdkWindows windowsThis;
+            GdkWindow* window = GTKGetWindow(windowsThis);
+            if (window)
+                gdk_window_set_cursor( window, cursor.GetCursor() );
+            else

             {
             {

-                GdkWindow *win = windowsThis[n];
-                if ( !win )
+                const size_t count = windowsThis.size();
+                for ( size_t n = 0; n < count; n++ )

                 {
                 {

-                    wxFAIL_MSG(wxT("NULL window returned by GTKGetWindow()?"));
-                    continue;
+                    GdkWindow *win = windowsThis[n];
+                    // It can be zero if the window has not been realized yet.
+                    if ( win )
+                    {
+                        gdk_window_set_cursor(win, cursor.GetCursor());
+                    }

                 }
                 }

-
-                gdk_window_set_cursor(win, cursor.GetCursor());

             }
         }
     }
             }
         }
     }

+
+    if (recurse)
+    {
+        for (wxWindowList::iterator it = GetChildren().begin(); it != GetChildren().end(); ++it)
+        {
+            (*it)->GTKUpdateCursor( true );
+        }
+    }

 }
 
 void wxWindowGTK::WarpPointer( int x, int y )
 }
 
 void wxWindowGTK::WarpPointer( int x, int y )


@@ -3757,7 +3794,18 @@ void wxWindowGTK::DoSetToolTip( wxToolTip *tip )
 
 void wxWindowGTK::GTKApplyToolTip( GtkTooltips *tips, const gchar *tip )
 {
 
 void wxWindowGTK::GTKApplyToolTip( GtkTooltips *tips, const gchar *tip )
 {

-    gtk_tooltips_set_tip(tips, GetConnectWidget(), tip, NULL);
+    GtkWidget *w = GetConnectWidget();
+    gtk_tooltips_set_tip(tips, w, tip, NULL);
+
+#if GTK_CHECK_VERSION(2, 12, 0)
+    if ( !tip || tip[0] == '\0' )
+    {
+        // Just applying empty tool tip doesn't work on 2.12.0, so also use
+        // gtk_widget_set_has_tooltip.
+        if (gtk_check_version(2, 12, 0) == NULL)
+            gtk_widget_set_has_tooltip(w, FALSE);
+    }
+#endif

 }
 #endif // wxUSE_TOOLTIPS
 
 }
 #endif // wxUSE_TOOLTIPS
 


@@ -4400,7 +4448,7 @@ GdkWindow* wxWindowGTK::GTKGetDrawingWindow() const
 {
     GdkWindow* window = NULL;
     if (m_wxwindow)
 {
     GdkWindow* window = NULL;
     if (m_wxwindow)

-        window = WX_PIZZA(m_wxwindow)->m_draw_window;
+        window = m_wxwindow->window;

     return window;
 }
 
     return window;
 }