static void
gimp_align_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (tool);
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
/* If the tool was being used in another image... reset it */
if (display != tool->display)
gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, display);
tool->display = display;
gimp_tool_control_activate (tool->control);
align_tool->x2 = align_tool->x1 = coords->x;
align_tool->y2 = align_tool->y1 = coords->y;
if (! gimp_draw_tool_is_active (GIMP_DRAW_TOOL (tool)))
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), display);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_align_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (tool);
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
/* If the tool was being used in another image... reset it */
if (display != tool->display)
{
if (gimp_draw_tool_is_active (GIMP_DRAW_TOOL (tool)))
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool));
gimp_tool_pop_status (tool, display);
clear_all_selected_objects (align_tool);
}
if (! gimp_tool_control_is_active (tool->control))
gimp_tool_control_activate (tool->control);
tool->display = display;
align_tool->x1 = align_tool->x0 = coords->x;
align_tool->y1 = align_tool->y0 = coords->y;
if (! gimp_draw_tool_is_active (GIMP_DRAW_TOOL (tool)))
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), display);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static GObject *
gimp_align_tool_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GimpTool *tool;
GimpAlignTool *align_tool;
GtkContainer *container;
GObject *options;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
tool = GIMP_TOOL (object);
align_tool = GIMP_ALIGN_TOOL (object);
options = G_OBJECT (gimp_tool_get_options (tool));
container = GTK_CONTAINER (g_object_get_data (options,
"controls-container"));
align_tool->controls = gimp_align_tool_controls (align_tool);
gtk_container_add (container, align_tool->controls);
gtk_widget_show (align_tool->controls);
return object;
}
static void
gimp_align_tool_oper_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (tool);
GimpDisplayShell *shell = gimp_display_get_shell (display);
GimpImage *image = gimp_display_get_image (display);
gint snap_distance = display->config->snap_distance;
gboolean add;
add = ((state & gimp_get_extend_selection_mask ()) &&
align_tool->selected_objects);
if (gimp_draw_tool_on_vectors (GIMP_DRAW_TOOL (tool), display,
coords, snap_distance, snap_distance,
NULL, NULL, NULL, NULL, NULL, NULL))
{
if (add)
align_tool->function = ALIGN_TOOL_ADD_PATH;
else
align_tool->function = ALIGN_TOOL_PICK_PATH;
}
else if (gimp_display_shell_get_show_guides (shell) &&
gimp_image_find_guide (image,
coords->x, coords->y,
FUNSCALEX (shell, snap_distance),
FUNSCALEY (shell, snap_distance)))
{
if (add)
align_tool->function = ALIGN_TOOL_ADD_GUIDE;
else
align_tool->function = ALIGN_TOOL_PICK_GUIDE;
}
else
{
GimpLayer *layer;
layer = gimp_image_pick_layer_by_bounds (image, coords->x, coords->y);
if (layer)
{
if (add)
align_tool->function = ALIGN_TOOL_ADD_LAYER;
else
align_tool->function = ALIGN_TOOL_PICK_LAYER;
}
else
{
align_tool->function = ALIGN_TOOL_IDLE;
}
}
gimp_align_tool_status_update (tool, display, state, proximity);
}
static void
gimp_align_tool_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (tool);
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (display->shell);
gint snap_distance;
snap_distance =
GIMP_DISPLAY_CONFIG (display->image->gimp->config)->snap_distance;
if (gimp_draw_tool_on_vectors (GIMP_DRAW_TOOL (tool), display,
coords, snap_distance, snap_distance,
NULL, NULL, NULL, NULL, NULL, NULL))
{
if ((state & GDK_SHIFT_MASK) && align_tool->selected_objects)
align_tool->function = ALIGN_TOOL_ADD_PATH;
else
align_tool->function = ALIGN_TOOL_PICK_PATH;
}
else if (gimp_display_shell_get_show_guides (shell) &&
(NULL != gimp_image_find_guide (display->image,
coords->x, coords->y,
FUNSCALEX (shell, snap_distance),
FUNSCALEY (shell, snap_distance))))
{
if ((state & GDK_SHIFT_MASK) && align_tool->selected_objects)
align_tool->function = ALIGN_TOOL_ADD_GUIDE;
else
align_tool->function = ALIGN_TOOL_PICK_GUIDE;
}
else
{
GimpLayer *layer = select_layer_by_coords (display->image,
coords->x, coords->y);
if (layer)
{
if ((state & GDK_SHIFT_MASK) && align_tool->selected_objects)
align_tool->function = ALIGN_TOOL_ADD_LAYER;
else
align_tool->function = ALIGN_TOOL_PICK_LAYER;
}
else
{
align_tool->function = ALIGN_TOOL_IDLE;
}
}
gimp_align_tool_status_update (tool, display, state, proximity);
}
static void
gimp_align_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (tool);
GimpToolCursorType tool_cursor = GIMP_TOOL_CURSOR_NONE;
GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_NONE;
if (state & GDK_SHIFT_MASK)
{
/* always add '+' when Shift is pressed, even if nothing is selected */
modifier = GIMP_CURSOR_MODIFIER_PLUS;
}
switch (align_tool->function)
{
case ALIGN_TOOL_IDLE:
tool_cursor = GIMP_TOOL_CURSOR_RECT_SELECT;
break;
case ALIGN_TOOL_PICK_LAYER:
case ALIGN_TOOL_ADD_LAYER:
tool_cursor = GIMP_TOOL_CURSOR_HAND;
break;
case ALIGN_TOOL_PICK_GUIDE:
case ALIGN_TOOL_ADD_GUIDE:
tool_cursor = GIMP_TOOL_CURSOR_MOVE;
break;
case ALIGN_TOOL_PICK_PATH:
case ALIGN_TOOL_ADD_PATH:
tool_cursor = GIMP_TOOL_CURSOR_PATHS;
break;
case ALIGN_TOOL_DRAG_BOX:
/* FIXME: it would be nice to add something here, but we cannot easily
detect when the tool is in this mode (the draw tool is always active)
so this state is not used for the moment.
*/
break;
}
gimp_tool_control_set_cursor (tool->control, GIMP_CURSOR_MOUSE);
gimp_tool_control_set_tool_cursor (tool->control, tool_cursor);
gimp_tool_control_set_cursor_modifier (tool->control, modifier);
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
}
static void
gimp_align_tool_constructed (GObject *object)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (object);
GimpAlignOptions *options;
G_OBJECT_CLASS (parent_class)->constructed (object);
options = GIMP_ALIGN_TOOL_GET_OPTIONS (align_tool);
g_signal_connect_object (options, "align-button-clicked",
G_CALLBACK (gimp_align_tool_align),
align_tool, G_CONNECT_SWAPPED);
}
static void
gimp_align_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (tool);
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
align_tool->x2 = coords->x;
align_tool->y2 = coords->y;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_align_tool_cursor_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (tool);
GimpToolCursorType tool_cursor = GIMP_TOOL_CURSOR_NONE;
GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_NONE;
/* always add '+' when Shift is pressed, even if nothing is selected */
if (state & gimp_get_extend_selection_mask ())
modifier = GIMP_CURSOR_MODIFIER_PLUS;
switch (align_tool->function)
{
case ALIGN_TOOL_IDLE:
tool_cursor = GIMP_TOOL_CURSOR_RECT_SELECT;
break;
case ALIGN_TOOL_PICK_LAYER:
case ALIGN_TOOL_ADD_LAYER:
tool_cursor = GIMP_TOOL_CURSOR_HAND;
break;
case ALIGN_TOOL_PICK_GUIDE:
case ALIGN_TOOL_ADD_GUIDE:
tool_cursor = GIMP_TOOL_CURSOR_MOVE;
break;
case ALIGN_TOOL_PICK_PATH:
case ALIGN_TOOL_ADD_PATH:
tool_cursor = GIMP_TOOL_CURSOR_PATHS;
break;
case ALIGN_TOOL_DRAG_BOX:
break;
}
gimp_tool_control_set_cursor (tool->control, GIMP_CURSOR_MOUSE);
gimp_tool_control_set_tool_cursor (tool->control, tool_cursor);
gimp_tool_control_set_cursor_modifier (tool->control, modifier);
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
}
static void
gimp_align_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (tool);
switch (action)
{
case GIMP_TOOL_ACTION_PAUSE:
case GIMP_TOOL_ACTION_RESUME:
break;
case GIMP_TOOL_ACTION_HALT:
clear_all_selected_objects (align_tool);
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, display);
}
static void
gimp_align_tool_finalize (GObject *object)
{
GimpTool *tool = GIMP_TOOL (object);
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (object);
if (gimp_draw_tool_is_active (GIMP_DRAW_TOOL (object)))
gimp_draw_tool_stop (GIMP_DRAW_TOOL (object));
if (gimp_tool_control_is_active (tool->control))
gimp_tool_control_halt (tool->control);
if (align_tool->controls)
{
gtk_widget_destroy (align_tool->controls);
align_tool->controls = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_align_tool_draw (GimpDrawTool *draw_tool)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (draw_tool);
GList *list;
gint x, y, w, h;
/* draw rubber-band rectangle */
x = MIN (align_tool->x2, align_tool->x1);
y = MIN (align_tool->y2, align_tool->y1);
w = MAX (align_tool->x2, align_tool->x1) - x;
h = MAX (align_tool->y2, align_tool->y1) - y;
gimp_draw_tool_add_rectangle (draw_tool, FALSE, x, y, w, h);
for (list = align_tool->selected_objects;
list;
list = g_list_next (list))
{
if (GIMP_IS_ITEM (list->data))
{
GimpItem *item = list->data;
if (GIMP_IS_VECTORS (item))
{
gdouble x1_f, y1_f, x2_f, y2_f;
gimp_vectors_bounds (GIMP_VECTORS (item),
&x1_f, &y1_f,
&x2_f, &y2_f);
x = ROUND (x1_f);
y = ROUND (y1_f);
w = ROUND (x2_f - x1_f);
h = ROUND (y2_f - y1_f);
}
else
{
gimp_item_get_offset (item, &x, &y);
w = gimp_item_get_width (item);
h = gimp_item_get_height (item);
}
gimp_draw_tool_add_handle (draw_tool, GIMP_HANDLE_FILLED_SQUARE,
x, y,
GIMP_TOOL_HANDLE_SIZE_SMALL,
GIMP_TOOL_HANDLE_SIZE_SMALL,
GIMP_HANDLE_ANCHOR_NORTH_WEST);
gimp_draw_tool_add_handle (draw_tool, GIMP_HANDLE_FILLED_SQUARE,
x + w, y,
GIMP_TOOL_HANDLE_SIZE_SMALL,
GIMP_TOOL_HANDLE_SIZE_SMALL,
GIMP_HANDLE_ANCHOR_NORTH_EAST);
gimp_draw_tool_add_handle (draw_tool, GIMP_HANDLE_FILLED_SQUARE,
x, y + h,
GIMP_TOOL_HANDLE_SIZE_SMALL,
GIMP_TOOL_HANDLE_SIZE_SMALL,
GIMP_HANDLE_ANCHOR_SOUTH_WEST);
gimp_draw_tool_add_handle (draw_tool, GIMP_HANDLE_FILLED_SQUARE,
x + w, y + h,
GIMP_TOOL_HANDLE_SIZE_SMALL,
GIMP_TOOL_HANDLE_SIZE_SMALL,
GIMP_HANDLE_ANCHOR_SOUTH_EAST);
}
else if (GIMP_IS_GUIDE (list->data))
{
GimpGuide *guide = list->data;
GimpImage *image = gimp_display_get_image (GIMP_TOOL (draw_tool)->display);
gint x, y;
gint w, h;
switch (gimp_guide_get_orientation (guide))
{
case GIMP_ORIENTATION_VERTICAL:
x = gimp_guide_get_position (guide);
h = gimp_image_get_height (image);
gimp_draw_tool_add_handle (draw_tool, GIMP_HANDLE_FILLED_SQUARE,
x, h,
GIMP_TOOL_HANDLE_SIZE_SMALL,
GIMP_TOOL_HANDLE_SIZE_SMALL,
GIMP_HANDLE_ANCHOR_SOUTH);
gimp_draw_tool_add_handle (draw_tool, GIMP_HANDLE_FILLED_SQUARE,
x, 0,
GIMP_TOOL_HANDLE_SIZE_SMALL,
GIMP_TOOL_HANDLE_SIZE_SMALL,
GIMP_HANDLE_ANCHOR_NORTH);
break;
case GIMP_ORIENTATION_HORIZONTAL:
y = gimp_guide_get_position (guide);
w = gimp_image_get_width (image);
gimp_draw_tool_add_handle (draw_tool, GIMP_HANDLE_FILLED_SQUARE,
w, y,
GIMP_TOOL_HANDLE_SIZE_SMALL,
GIMP_TOOL_HANDLE_SIZE_SMALL,
GIMP_HANDLE_ANCHOR_EAST);
gimp_draw_tool_add_handle (draw_tool, GIMP_HANDLE_FILLED_SQUARE,
0, y,
GIMP_TOOL_HANDLE_SIZE_SMALL,
GIMP_TOOL_HANDLE_SIZE_SMALL,
GIMP_HANDLE_ANCHOR_WEST);
break;
default:
break;
}
}
}
}
static void
gimp_align_tool_status_update (GimpTool *tool,
GimpDisplay *display,
GdkModifierType state,
gboolean proximity)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (tool);
GdkModifierType extend_mask;
extend_mask = gimp_get_extend_selection_mask ();
gimp_tool_pop_status (tool, display);
if (proximity)
{
gchar *status = NULL;
if (! align_tool->selected_objects)
{
/* no need to suggest Shift if nothing is selected */
state |= extend_mask;
}
switch (align_tool->function)
{
case ALIGN_TOOL_IDLE:
status = gimp_suggest_modifiers (_("Click on a layer, path or guide, "
"or Click-Drag to pick several "
"layers"),
extend_mask & ~state,
NULL, NULL, NULL);
break;
case ALIGN_TOOL_PICK_LAYER:
status = gimp_suggest_modifiers (_("Click to pick this layer as "
"first item"),
extend_mask & ~state,
NULL, NULL, NULL);
break;
case ALIGN_TOOL_ADD_LAYER:
status = g_strdup (_("Click to add this layer to the list"));
break;
case ALIGN_TOOL_PICK_GUIDE:
status = gimp_suggest_modifiers (_("Click to pick this guide as "
"first item"),
extend_mask & ~state,
NULL, NULL, NULL);
break;
case ALIGN_TOOL_ADD_GUIDE:
status = g_strdup (_("Click to add this guide to the list"));
break;
case ALIGN_TOOL_PICK_PATH:
status = gimp_suggest_modifiers (_("Click to pick this path as "
"first item"),
extend_mask & ~state,
NULL, NULL, NULL);
break;
case ALIGN_TOOL_ADD_PATH:
status = g_strdup (_("Click to add this path to the list"));
break;
case ALIGN_TOOL_DRAG_BOX:
break;
}
if (status)
{
gimp_tool_push_status (tool, display, "%s", status);
g_free (status);
}
}
}
/* some rather complex logic here. If the user clicks without modifiers,
* then we start a new list, and use the first object in it as reference.
* If the user clicks using Shift, or draws a rubber-band box, then
* we add objects to the list, but do not specify which one should
* be used as reference.
*/
static void
gimp_align_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (tool);
GimpAlignOptions *options = GIMP_ALIGN_TOOL_GET_OPTIONS (tool);
GimpDisplayShell *shell = gimp_display_get_shell (display);
GObject *object = NULL;
GimpImage *image = gimp_display_get_image (display);
GdkModifierType extend_mask;
gint i;
extend_mask = gimp_get_extend_selection_mask ();
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
gimp_tool_control_halt (tool->control);
if (release_type == GIMP_BUTTON_RELEASE_CANCEL)
{
align_tool->x2 = align_tool->x1;
align_tool->y2 = align_tool->y1;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
return;
}
if (! (state & extend_mask)) /* start a new list */
{
gimp_align_tool_clear_selected (align_tool);
align_tool->set_reference = FALSE;
}
/* if mouse has moved less than EPSILON pixels since button press,
* select the nearest thing, otherwise make a rubber-band rectangle
*/
if (hypot (coords->x - align_tool->x1,
coords->y - align_tool->y1) < EPSILON)
{
GimpVectors *vectors;
GimpGuide *guide;
GimpLayer *layer;
gint snap_distance = display->config->snap_distance;
if (gimp_draw_tool_on_vectors (GIMP_DRAW_TOOL (tool), display,
coords, snap_distance, snap_distance,
NULL, NULL, NULL, NULL, NULL,
&vectors))
{
object = G_OBJECT (vectors);
}
else if (gimp_display_shell_get_show_guides (shell) &&
(guide = gimp_image_find_guide (image,
coords->x, coords->y,
FUNSCALEX (shell, snap_distance),
FUNSCALEY (shell, snap_distance))))
{
object = G_OBJECT (guide);
}
else
{
if ((layer = gimp_image_pick_layer_by_bounds (image,
coords->x, coords->y)))
{
object = G_OBJECT (layer);
}
}
if (object)
{
if (! g_list_find (align_tool->selected_objects, object))
{
align_tool->selected_objects =
g_list_append (align_tool->selected_objects, object);
g_signal_connect (object, "removed",
G_CALLBACK (gimp_align_tool_object_removed),
align_tool);
/* if an object has been selected using unmodified click,
* it should be used as the reference
*/
if (! (state & extend_mask))
align_tool->set_reference = TRUE;
}
}
}
else /* FIXME: look for vectors too */
{
gint X0 = MIN (coords->x, align_tool->x1);
gint X1 = MAX (coords->x, align_tool->x1);
gint Y0 = MIN (coords->y, align_tool->y1);
gint Y1 = MAX (coords->y, align_tool->y1);
GList *all_layers;
GList *list;
all_layers = gimp_image_get_layer_list (image);
for (list = all_layers; list; list = g_list_next (list))
{
GimpLayer *layer = list->data;
gint x0, y0, x1, y1;
if (! gimp_item_get_visible (GIMP_ITEM (layer)))
continue;
gimp_item_get_offset (GIMP_ITEM (layer), &x0, &y0);
x1 = x0 + gimp_item_get_width (GIMP_ITEM (layer));
y1 = y0 + gimp_item_get_height (GIMP_ITEM (layer));
if (x0 < X0 || y0 < Y0 || x1 > X1 || y1 > Y1)
continue;
if (g_list_find (align_tool->selected_objects, layer))
continue;
align_tool->selected_objects =
g_list_append (align_tool->selected_objects, layer);
g_signal_connect (layer, "removed",
G_CALLBACK (gimp_align_tool_object_removed),
align_tool);
}
g_list_free (all_layers);
}
for (i = 0; i < ALIGN_OPTIONS_N_BUTTONS; i++)
{
if (options->button[i])
gtk_widget_set_sensitive (options->button[i],
align_tool->selected_objects != NULL);
}
align_tool->x2 = align_tool->x1;
align_tool->y2 = align_tool->y1;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
do_alignment (GtkWidget *widget,
gpointer data)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (data);
GimpAlignmentType action;
GimpImage *image;
GObject *reference_object = NULL;
GList *list;
gint offset;
image = GIMP_TOOL (align_tool)->display->image;
action = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (widget), "action"));
offset = align_tool->horz_offset;
switch (action)
{
case GIMP_ALIGN_LEFT:
case GIMP_ALIGN_HCENTER:
case GIMP_ALIGN_RIGHT:
case GIMP_ALIGN_TOP:
case GIMP_ALIGN_VCENTER:
case GIMP_ALIGN_BOTTOM:
offset = 0;
break;
case GIMP_ARRANGE_LEFT:
case GIMP_ARRANGE_HCENTER:
case GIMP_ARRANGE_RIGHT:
case GIMP_ARRANGE_TOP:
case GIMP_ARRANGE_VCENTER:
case GIMP_ARRANGE_BOTTOM:
offset = align_tool->horz_offset;
break;
}
/* if nothing is selected, just return */
if (g_list_length (align_tool->selected_objects) == 0)
return;
/* if only one object is selected, use the image as reference
* if multiple objects are selected, use the first one as reference if
* "set_reference" is TRUE, otherwise use NULL.
*/
list = align_tool->selected_objects;
switch (align_tool->align_reference_type)
{
case GIMP_ALIGN_REFERENCE_IMAGE:
reference_object = G_OBJECT (image);
break;
case GIMP_ALIGN_REFERENCE_FIRST:
if (g_list_length (align_tool->selected_objects) == 1)
{
reference_object = G_OBJECT (image);
}
else
{
if (align_tool->set_reference)
{
reference_object = G_OBJECT (align_tool->selected_objects->data);
list = g_list_next (align_tool->selected_objects);
}
else
{
reference_object = NULL;
}
}
break;
case GIMP_ALIGN_REFERENCE_SELECTION:
if (image->selection_mask)
{
reference_object = G_OBJECT (image->selection_mask);
}
else
return;
break;
case GIMP_ALIGN_REFERENCE_ACTIVE_LAYER:
if (image->active_layer)
reference_object = G_OBJECT (image->active_layer);
else
return;
break;
case GIMP_ALIGN_REFERENCE_ACTIVE_CHANNEL:
if (image->active_channel)
reference_object = G_OBJECT (image->active_channel);
else
return;
break;
case GIMP_ALIGN_REFERENCE_ACTIVE_PATH:
g_print ("reference = active path not yet handled.\n");
return;
break;
}
gimp_draw_tool_pause (GIMP_DRAW_TOOL (align_tool));
gimp_image_arrange_objects (image, list,
action,
reference_object,
action,
offset);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (align_tool));
gimp_image_flush (image);
}
/*
* some rather complex logic here. If the user clicks without modifiers,
* then we start a new list, and use the first object in it as reference.
* If the user clicks using Shift, or draws a rubber-band box, then
* we add objects to the list, but do not specify which one should
* be used as reference.
*/
static void
gimp_align_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (tool);
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (display->shell);
GObject *object = NULL;
GimpImage *image = display->image;
gint i;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
if (release_type == GIMP_BUTTON_RELEASE_CANCEL)
{
align_tool->x1 = align_tool->x0;
align_tool->y1 = align_tool->y0;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
return;
}
if (! (state & GDK_SHIFT_MASK)) /* start a new list */
{
clear_all_selected_objects (align_tool);
align_tool->set_reference = FALSE;
}
/* if mouse has moved less than EPSILON pixels since button press, select
the nearest thing, otherwise make a rubber-band rectangle */
if (hypot (coords->x - align_tool->x0, coords->y - align_tool->y0) < EPSILON)
{
GimpVectors *vectors;
GimpGuide *guide;
GimpLayer *layer;
gint snap_distance;
snap_distance =
GIMP_DISPLAY_CONFIG (display->image->gimp->config)->snap_distance;
if (gimp_draw_tool_on_vectors (GIMP_DRAW_TOOL (tool), display,
coords, snap_distance, snap_distance,
NULL, NULL, NULL, NULL, NULL,
&vectors))
{
object = G_OBJECT (vectors);
}
else if (gimp_display_shell_get_show_guides (shell) &&
(guide = gimp_image_find_guide (display->image,
coords->x, coords->y,
FUNSCALEX (shell, snap_distance),
FUNSCALEY (shell, snap_distance))))
{
object = G_OBJECT (guide);
}
else
{
if ((layer = select_layer_by_coords (display->image,
coords->x, coords->y)))
{
object = G_OBJECT (layer);
}
}
if (object)
{
if (! g_list_find (align_tool->selected_objects, object))
{
align_tool->selected_objects
= g_list_append (align_tool->selected_objects, object);
g_signal_connect (object, "removed",
G_CALLBACK (clear_selected_object),
(gpointer) align_tool);
/* if an object has been selected using unmodified click,
* it should be used as the reference
*/
if (! (state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK)))
align_tool->set_reference = TRUE;
}
}
}
else /* FIXME: look for vectors too */
{
gint X0 = MIN (coords->x, align_tool->x0);
gint X1 = MAX (coords->x, align_tool->x0);
gint Y0 = MIN (coords->y, align_tool->y0);
gint Y1 = MAX (coords->y, align_tool->y0);
GList *list;
for (list = GIMP_LIST (image->layers)->list;
list;
list = g_list_next (list))
{
GimpLayer *layer = list->data;
gint x0, y0, x1, y1;
if (! gimp_item_get_visible (GIMP_ITEM (layer)))
continue;
gimp_item_offsets (GIMP_ITEM (layer), &x0, &y0);
x1 = x0 + gimp_item_width (GIMP_ITEM (layer));
y1 = y0 + gimp_item_height (GIMP_ITEM (layer));
if (x0 < X0 || y0 < Y0 || x1 > X1 || y1 > Y1)
continue;
if (g_list_find (align_tool->selected_objects, layer))
continue;
align_tool->selected_objects
= g_list_append (align_tool->selected_objects, layer);
g_signal_connect (layer, "removed", G_CALLBACK (clear_selected_object),
(gpointer) align_tool);
}
}
for (i = 0; i < ALIGN_TOOL_NUM_BUTTONS; i++)
gtk_widget_set_sensitive (align_tool->button[i],
(align_tool->selected_objects != NULL));
align_tool->x1 = align_tool->x0;
align_tool->y1 = align_tool->y0;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}