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app: fix warnings and crashes in rectangle select and crop 

We can't rely on g_object_unref() in halt() for breaking all property
GBindings between the tool options and GimpToolRectangle, because we
might be in the middle of a signal emission which also refs and keeps
the rectangle alive until the last callback returns. So we had
dangling rectangles interacting with tool options.

Remember all bindings in a list, and break them explicitly when we
shut down the rectangle in halt().

Also, forgot to unset the display's highlight in the rectangle
selection tool.
This commit is contained in:
Michael Natterer 2017-06-29 15:06:27 +02:00
parent e7964e499c
commit ff915b68c9
3 changed files with 49 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
app/tools/gimpcroptool.c
View File

@ -218,8 +218,8 @@ gimp_crop_tool_button_press (GimpTool *tool,
gimp_tool_widget_hover (crop_tool->widget, coords, state, TRUE);
/* HACK: force CREATING on a newly created rectangle; otherwise,
* the above binding of properties would cause the rectangle to
* start with the size from tool options.
* property bindings would cause the rectangle to start with the
* size from tool options.
*/
gimp_tool_rectangle_set_function (GIMP_TOOL_RECTANGLE (crop_tool->widget),
GIMP_TOOL_RECTANGLE_CREATING);
@ -357,10 +357,15 @@ gimp_crop_tool_start (GimpCropTool *crop_tool,
gimp_draw_tool_set_widget (GIMP_DRAW_TOOL (tool), widget);
for (i = 0; i < G_N_ELEMENTS (properties); i++)
g_object_bind_property (G_OBJECT (options), properties[i],
G_OBJECT (widget), properties[i],
G_BINDING_SYNC_CREATE |
G_BINDING_BIDIRECTIONAL);
{
GBinding *binding =
g_object_bind_property (G_OBJECT (options), properties[i],
G_OBJECT (widget), properties[i],
G_BINDING_SYNC_CREATE |
G_BINDING_BIDIRECTIONAL);
crop_tool->bindings = g_list_prepend (crop_tool->bindings, binding);
}
g_signal_connect (widget, "changed",
G_CALLBACK (gimp_crop_tool_rectangle_changed),
@ -467,6 +472,13 @@ gimp_crop_tool_halt (GimpCropTool *crop_tool)
if (gimp_draw_tool_is_active (GIMP_DRAW_TOOL (tool)))
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool));
/* disconnect bindings manually so they are really gone *now*, we
* might be in the middle of a signal emission that keeps the
* widget and its bindings alive.
*/
g_list_free_full (crop_tool->bindings, (GDestroyNotify) g_object_unref);
crop_tool->bindings = NULL;
gimp_draw_tool_set_widget (GIMP_DRAW_TOOL (tool), NULL);
g_clear_object (&crop_tool->widget);

1
app/tools/gimpcroptool.h
View File

@ -43,6 +43,7 @@ struct _GimpCropTool
GimpToolWidget *widget;
GimpToolWidget *grab_widget;
GList *bindings;
};
struct _GimpCropToolClass

47
app/tools/gimprectangleselecttool.c
View File

@ -63,6 +63,7 @@ struct _GimpRectangleSelectToolPrivate
GimpToolWidget *widget;
GimpToolWidget *grab_widget;
GList *bindings;
};
@ -678,10 +679,15 @@ gimp_rectangle_select_tool_start (GimpRectangleSelectTool *rect_tool,
gimp_draw_tool_set_widget (GIMP_DRAW_TOOL (tool), widget);
for (i = 0; i < G_N_ELEMENTS (properties); i++)
g_object_bind_property (G_OBJECT (options), properties[i],
G_OBJECT (widget), properties[i],
G_BINDING_SYNC_CREATE |
G_BINDING_BIDIRECTIONAL);
{
GBinding *binding =
g_object_bind_property (G_OBJECT (options), properties[i],
G_OBJECT (widget), properties[i],
G_BINDING_SYNC_CREATE |
G_BINDING_BIDIRECTIONAL);
private->bindings = g_list_prepend (private->bindings, binding);
}
g_signal_connect (widget, "response",
G_CALLBACK (gimp_rectangle_select_tool_rectangle_response),
@ -821,9 +827,16 @@ gimp_rectangle_select_tool_halt (GimpRectangleSelectTool *rect_tool)
if (tool->display)
{
GimpImage *image = gimp_display_get_image (tool->display);
GimpUndoStack *undo_stack = gimp_image_get_undo_stack (image);
GimpUndo *undo = gimp_undo_stack_peek (undo_stack);
GimpDisplayShell *shell = gimp_display_get_shell (tool->display);
GimpImage *image = gimp_display_get_image (tool->display);
GimpUndoStack *undo_stack = gimp_image_get_undo_stack (image);
GimpUndo *undo = gimp_undo_stack_peek (undo_stack);
gimp_display_shell_set_highlight (shell, NULL);
gimp_rectangle_options_disconnect (GIMP_RECTANGLE_OPTIONS (options),
G_CALLBACK (gimp_rectangle_select_tool_auto_shrink),
rect_tool);
/* if we have an existing rectangle in the current display, then
* we have already "executed", and need to undo at this point,
@ -839,24 +852,27 @@ gimp_rectangle_select_tool_halt (GimpRectangleSelectTool *rect_tool)
gimp_tool_control_pop_preserve (tool->control);
}
gimp_rectangle_options_disconnect (GIMP_RECTANGLE_OPTIONS (options),
G_CALLBACK (gimp_rectangle_select_tool_auto_shrink),
rect_tool);
}
gimp_rectangle_select_tool_update_option_defaults (rect_tool, TRUE);
priv->undo = NULL;
priv->redo = NULL;
if (gimp_draw_tool_is_active (GIMP_DRAW_TOOL (tool)))
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool));
/* disconnect bindings manually so they are really gone *now*, we
* might be in the middle of a signal emission that keeps the
* widget and its bindings alive.
*/
g_list_free_full (priv->bindings, (GDestroyNotify) g_object_unref);
priv->bindings = NULL;
gimp_draw_tool_set_widget (GIMP_DRAW_TOOL (tool), NULL);
g_clear_object (&priv->widget);
tool->display = NULL;
gimp_rectangle_select_tool_update_option_defaults (rect_tool, TRUE);
}
static GimpChannelOps
@ -891,10 +907,7 @@ gimp_rectangle_select_tool_update_option_defaults (GimpRectangleSelectTool *rect
rect_options = GIMP_RECTANGLE_OPTIONS (gimp_tool_get_options (tool));
if (! priv->widget)
return;
if (tool->display != NULL && ! ignore_pending)
if (priv->widget && ! ignore_pending)
{
/* There is a pending rectangle and we should not ignore it, so
* set default Fixed: Size to the same as the current pending