mhu/gds-render
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Fix bug which allowd moving layer elements between different windows.

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This commit is contained in:
Mario Hüttel 2019-03-15 23:46:06 +01:00
parent 64508104bc
commit 5357aff1b8
1 changed files with 25 additions and 17 deletions
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42
layer/layer-selector.c
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@ -48,6 +48,8 @@ struct _LayerSelector {
GtkWindow *save_parent_window;
GtkListBox *list_box;
GtkTargetEntry dnd_target;
gpointer dummy[4];
};
@ -55,13 +57,8 @@ G_DEFINE_TYPE(LayerSelector, layer_selector, G_TYPE_OBJECT)
/* Drag and drop code */
static GtkTargetEntry entries[] = {
{ "GTK_LIST_BOX_ROW", GTK_TARGET_SAME_APP, 0 }
};
static void sel_layer_element_drag_begin(GtkWidget *widget,
GdkDragContext *context,
gpointer data)
static void sel_layer_element_drag_begin(GtkWidget *widget, GdkDragContext *context, gpointer data)
{
GtkWidget *row;
GtkAllocation alloc;
@ -109,8 +106,11 @@ static void sel_layer_element_drag_data_get(GtkWidget *widget, GdkDragContext *c
(void)info;
(void)time;
(void)data;
GdkAtom atom;
gtk_selection_data_set(selection_data, gdk_atom_intern_static_string("GTK_LIST_BOX_ROW"),
atom = gdk_atom_intern_static_string("GTK_LIST_BOX_ROW");
gtk_selection_data_set(selection_data, atom,
32, (const guchar *)&widget, sizeof(gpointer));
}
@ -304,6 +304,11 @@ static void layer_selector_dispose(GObject *self)
g_clear_object(&sel->associated_load_button);
g_clear_object(&sel->associated_save_button);
if (sel->dnd_target.target) {
g_free(sel->dnd_target.target);
sel->dnd_target.target = NULL;
}
/* Chain up to parent's dispose function */
G_OBJECT_CLASS(layer_selector_parent_class)->dispose(self);
}
@ -324,23 +329,26 @@ static void layer_selector_class_init(LayerSelectorClass *klass)
g_object_unref(provider);
}
static void layer_selector_setup_dnd(GtkListBox *box)
static void layer_selector_setup_dnd(LayerSelector *self)
{
gtk_drag_dest_set(GTK_WIDGET(box), GTK_DEST_DEFAULT_MOTION | GTK_DEST_DEFAULT_DROP, entries, 1, GDK_ACTION_MOVE);
g_signal_connect(box, "drag-data-received", G_CALLBACK(layer_selector_drag_data_received), NULL);
g_signal_connect(box, "drag-motion", G_CALLBACK(layer_selector_drag_motion), NULL);
g_signal_connect(box, "drag-leave", G_CALLBACK(layer_selector_drag_leave), NULL);
gtk_drag_dest_set(GTK_WIDGET(self->list_box), GTK_DEST_DEFAULT_MOTION | GTK_DEST_DEFAULT_DROP, &self->dnd_target, 1, GDK_ACTION_MOVE);
g_signal_connect(self->list_box, "drag-data-received", G_CALLBACK(layer_selector_drag_data_received), NULL);
g_signal_connect(self->list_box, "drag-motion", G_CALLBACK(layer_selector_drag_motion), NULL);
g_signal_connect(self->list_box, "drag-leave", G_CALLBACK(layer_selector_drag_leave), NULL);
}
/* Drag and drop end */
static void layer_selector_init(LayerSelector *self)
{
/* Setup drag and drop for associated list box */
self->load_parent_window = NULL;
self->save_parent_window = NULL;
self->associated_load_button = NULL;
self->associated_save_button = NULL;
self->dnd_target.target = g_strdup_printf("LAYER_SELECTOR_DND_%p", self);
self->dnd_target.info = 0;
self->dnd_target.flags = GTK_TARGET_SAME_APP;
}
LayerSelector *layer_selector_new(GtkListBox *list_box)
@ -352,7 +360,7 @@ LayerSelector *layer_selector_new(GtkListBox *list_box)
selector = LAYER_SELECTOR(g_object_new(TYPE_LAYER_SELECTOR, NULL));
selector->list_box = list_box;
layer_selector_setup_dnd(list_box);
layer_selector_setup_dnd(selector);
g_object_ref(G_OBJECT(list_box));
return selector;
@ -439,9 +447,9 @@ static gboolean layer_selector_check_if_layer_widget_exists(LayerSelector *self,
return ret;
}
static void sel_layer_element_setup_dnd_callbacks(LayerElement *element)
static void sel_layer_element_setup_dnd_callbacks(LayerSelector *self, LayerElement *element)
{
layer_element_set_dnd_callbacks(element, entries, 1,
layer_element_set_dnd_callbacks(element, &self->dnd_target, 1,
sel_layer_element_drag_begin,
sel_layer_element_drag_data_get,
sel_layer_element_drag_end);
@ -464,7 +472,7 @@ static void layer_selector_analyze_cell_layers(LayerSelector *self, struct gds_c
layer = (int)gfx->layer;
if (layer_selector_check_if_layer_widget_exists(self, layer) == FALSE) {
le = layer_element_new();
sel_layer_element_setup_dnd_callbacks(LAYER_ELEMENT(le));
sel_layer_element_setup_dnd_callbacks(self, LAYER_ELEMENT(le));
layer_element_set_layer(LAYER_ELEMENT(le), layer);
gtk_list_box_insert(self->list_box, le, -1);
gtk_widget_show(le);