For scrolling, the "set_scroll_adjustments" signal is implemented
to make wxPizza appear scrollable to GTK+, allowing it to be put in a
GtkScrolledWindow. Child widget positions are adjusted for the scrolling
-position in size_allocate. A second same-size GdkWindow is placed in front of
-widget->window, to allow GDK to use a more efficient scrolling technique.
+position in size_allocate.
For borders, space is reserved in realize and size_allocate. The border is
drawn on wxPizza's parent GdkWindow.
int h = alloc->height - 2 * border_y;
if (h < 0) h = 0;
- if (pizza->m_draw_window != widget->window)
- {
- // two windows, both same size
- gdk_window_move_resize(widget->window,
- alloc->x + border_x, alloc->y + border_y, w, h);
- if (is_resize)
- gdk_window_resize(pizza->m_draw_window, w, h);
- }
- else
+ gdk_window_move_resize(widget->window,
+ alloc->x + border_x, alloc->y + border_y, w, h);
+
+ if (is_resize && (border_x || border_y))
{
- // one window
- gdk_window_move_resize(widget->window,
- alloc->x + border_x, alloc->y + border_y, w, h);
-
- if (is_resize && (border_x || border_y))
- {
- // old and new border areas need to be invalidated,
- // otherwise they will not be erased/redrawn properly
- GdkWindow* parent = gtk_widget_get_parent_window(widget);
- gdk_window_invalidate_rect(parent, &widget->allocation, false);
- gdk_window_invalidate_rect(parent, alloc, false);
- }
+ // old and new border areas need to be invalidated,
+ // otherwise they will not be erased/redrawn properly
+ GdkWindow* parent = gtk_widget_get_parent_window(widget);
+ gdk_window_invalidate_rect(parent, &widget->allocation, false);
+ gdk_window_invalidate_rect(parent, alloc, false);
}
}
parent_class->realize(widget);
wxPizza* pizza = WX_PIZZA(widget);
- pizza->m_draw_window = widget->window;
- if (pizza->m_border_style || pizza->m_is_scrollable)
+ if (pizza->m_border_style)
{
int border_x, border_y;
pizza->get_border_widths(border_x, border_y);
int h = widget->allocation.height - 2 * border_y;
if (w < 0) w = 0;
if (h < 0) h = 0;
- if (pizza->m_is_scrollable)
- {
- // second window is created if wxWindow is scrollable
- GdkWindowAttr attr;
- attr.event_mask = 0;
- attr.x = x;
- attr.y = y;
- attr.width = w;
- attr.height = h;
- attr.wclass = GDK_INPUT_OUTPUT;
- attr.visual = gtk_widget_get_visual(widget);
- attr.colormap = gtk_widget_get_colormap(widget);
- attr.window_type = GDK_WINDOW_CHILD;
-
- // existing widget->window becomes m_draw_window,
- // new widget->window created as parent of m_draw_window
- widget->window = gdk_window_new(
- gdk_window_get_parent(widget->window),
- &attr,
- GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP);
-
- gdk_window_set_user_data(widget->window, widget);
- gdk_window_reparent(pizza->m_draw_window, widget->window, 0, 0);
- gdk_window_resize(pizza->m_draw_window, w, h);
-
- // Parts of backing window may be exposed temporarily while
- // resizing. Setting the backing pixmap to None prevents those
- // areas from being briefly painted black.
- gdk_window_set_back_pixmap(widget->window, NULL, false);
-
- for (const GList* list = pizza->m_fixed.children; list; list = list->next)
- {
- const GtkFixedChild* child = static_cast<GtkFixedChild*>(list->data);
- gtk_widget_set_parent_window(child->widget, pizza->m_draw_window);
- }
- }
- else
- gdk_window_move_resize(widget->window, x, y, w, h);
+ gdk_window_move_resize(widget->window, x, y, w, h);
}
}
-static void unrealize(GtkWidget* widget)
+static void show(GtkWidget* widget)
{
- wxPizza* pizza = WX_PIZZA(widget);
- if (pizza->m_draw_window != widget->window)
+ if (widget->parent && WX_PIZZA(widget)->m_border_style)
{
- gdk_window_set_user_data(pizza->m_draw_window, NULL);
- gdk_window_destroy(pizza->m_draw_window);
+ // invalidate whole allocation so borders will be drawn properly
+ const GtkAllocation& a = widget->allocation;
+ gtk_widget_queue_draw_area(widget->parent, a.x, a.y, a.width, a.height);
}
- pizza->m_draw_window = NULL;
- parent_class->unrealize(widget);
+ parent_class->show(widget);
}
-static void map(GtkWidget* widget)
+static void hide(GtkWidget* widget)
{
- parent_class->map(widget);
-
- GdkWindow* window = WX_PIZZA(widget)->m_draw_window;
- if (window != widget->window)
- gdk_window_show(window);
-}
-
-static void unmap(GtkWidget* widget)
-{
- GdkWindow* window = WX_PIZZA(widget)->m_draw_window;
- if (window != widget->window)
- gdk_window_hide(window);
+ if (widget->parent && WX_PIZZA(widget)->m_border_style)
+ {
+ // invalidate whole allocation so borders will be erased properly
+ const GtkAllocation& a = widget->allocation;
+ gtk_widget_queue_draw_area(widget->parent, a.x, a.y, a.width, a.height);
+ }
- parent_class->unmap(widget);
+ parent_class->hide(widget);
}
// not used, but needs to exist so gtk_widget_set_scroll_adjustments will work
GtkWidgetClass* widget_class = (GtkWidgetClass*)g_class;
widget_class->size_allocate = size_allocate;
widget_class->realize = realize;
- widget_class->unrealize = unrealize;
- widget_class->map = map;
- widget_class->unmap = unmap;
+ widget_class->show = show;
+ widget_class->hide = hide;
wxPizzaClass* klass = (wxPizzaClass*)g_class;
// needed to make widget appear scrollable to GTK+
{
GtkWidget* widget = GTK_WIDGET(g_object_new(type(), NULL));
wxPizza* pizza = WX_PIZZA(widget);
- pizza->m_draw_window = NULL;
pizza->m_scroll_x = 0;
pizza->m_scroll_y = 0;
pizza->m_is_scrollable = (windowStyle & (wxHSCROLL | wxVSCROLL)) != 0;
void wxPizza::put(GtkWidget* widget, int x, int y)
{
gtk_fixed_put(&m_fixed, widget, x, y);
- if (m_draw_window != GTK_WIDGET(this)->window)
- gtk_widget_set_parent_window(widget, m_draw_window);
}
struct AdjustData {
dx = -dx;
m_scroll_x -= dx;
m_scroll_y -= dy;
- if (m_draw_window)
+ if (widget->window)
{
- gdk_window_scroll(m_draw_window, dx, dy);
+ gdk_window_scroll(widget->window, dx, dy);
// Adjust child allocations. Doing a queue_resize on the children is not
// enough, sometimes they redraw in the wrong place during fast scrolling.
- AdjustData data = { m_draw_window, dx, dy };
+ AdjustData data = { widget->window, dx, dy };
gtk_container_forall(GTK_CONTAINER(widget), scroll_adjust, &data);
}
}
projects / wxWidgets.git / blobdiff