static void
gimp_region_select_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpRegionSelectTool *region_sel = GIMP_REGION_SELECT_TOOL (tool);
GimpRegionSelectOptions *options = GIMP_REGION_SELECT_TOOL_GET_OPTIONS (tool);
region_sel->x = coords->x;
region_sel->y = coords->y;
region_sel->saved_threshold = options->threshold;
gimp_tool_control_activate (tool->control);
tool->display = display;
if (gimp_selection_tool_start_edit (GIMP_SELECTION_TOOL (region_sel), coords))
return;
gimp_tool_push_status (tool, display,
_("Move the mouse to change threshold"));
/* calculate the region boundary */
region_sel->segs = gimp_region_select_tool_calculate (region_sel, display,
®ion_sel->num_segs);
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), display);
}
static void
gimp_region_select_tool_draw (GimpDrawTool *draw_tool)
{
GimpRegionSelectTool *region_sel = GIMP_REGION_SELECT_TOOL (draw_tool);
GimpRegionSelectOptions *options = GIMP_REGION_SELECT_TOOL_GET_OPTIONS (draw_tool);
if (region_sel->segs)
{
gint off_x = 0;
gint off_y = 0;
if (! options->sample_merged)
{
GimpImage *image = gimp_display_get_image (draw_tool->display);
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
}
gimp_draw_tool_add_boundary (draw_tool,
region_sel->segs,
region_sel->n_segs,
NULL,
off_x, off_y);
}
}
static void
gimp_region_select_tool_draw (GimpDrawTool *draw_tool)
{
GimpRegionSelectTool *region_sel = GIMP_REGION_SELECT_TOOL (draw_tool);
if (region_sel->segs)
{
GimpDisplayShell *shell;
shell = GIMP_DISPLAY_SHELL (GIMP_TOOL (draw_tool)->display->shell);
gimp_canvas_draw_segments (GIMP_CANVAS (shell->canvas),
GIMP_CANVAS_STYLE_XOR,
region_sel->segs, region_sel->num_segs);
}
}
static void
gimp_region_select_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpRegionSelectTool *region_sel = GIMP_REGION_SELECT_TOOL (tool);
GimpRegionSelectOptions *options = GIMP_REGION_SELECT_TOOL_GET_OPTIONS (tool);
GdkSegment *new_segs;
gint num_new_segs;
gint diff_x, diff_y;
gdouble diff;
static guint32 last_time = 0;
/* don't let the events come in too fast, ignore below a delay of 100 ms */
if (time - last_time < 100)
return;
last_time = time;
diff_x = coords->x - region_sel->x;
diff_y = coords->y - region_sel->y;
diff = ((ABS (diff_x) > ABS (diff_y)) ? diff_x : diff_y) / 2.0;
g_object_set (options,
"threshold", CLAMP (region_sel->saved_threshold + diff, 0, 255),
NULL);
/* calculate the new region boundary */
new_segs = gimp_region_select_tool_calculate (region_sel, display,
&num_new_segs);
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
/* make sure the XSegment array is freed before we assign the new one */
if (region_sel->segs)
g_free (region_sel->segs);
region_sel->segs = new_segs;
region_sel->num_segs = num_new_segs;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_region_select_tool_finalize (GObject *object)
{
GimpRegionSelectTool *region_sel = GIMP_REGION_SELECT_TOOL (object);
if (region_sel->region_mask)
{
g_object_unref (region_sel->region_mask);
region_sel->region_mask = NULL;
}
if (region_sel->segs)
{
g_free (region_sel->segs);
region_sel->segs = NULL;
region_sel->num_segs = 0;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_region_select_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display)
{
GimpRegionSelectTool *region_sel = GIMP_REGION_SELECT_TOOL (tool);
GimpSelectionOptions *sel_options = GIMP_SELECTION_TOOL_GET_OPTIONS (tool);
GimpRegionSelectOptions *options = GIMP_REGION_SELECT_TOOL_GET_OPTIONS (tool);
gimp_tool_pop_status (tool, display);
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool));
gimp_tool_control_halt (tool->control);
if (release_type != GIMP_BUTTON_RELEASE_CANCEL)
{
gint off_x, off_y;
if (GIMP_SELECTION_TOOL (tool)->function == SELECTION_ANCHOR)
{
if (gimp_image_floating_sel (display->image))
{
/* If there is a floating selection, anchor it */
floating_sel_anchor (gimp_image_floating_sel (display->image));
}
else
{
/* Otherwise, clear the selection mask */
gimp_channel_clear (gimp_image_get_mask (display->image), NULL,
TRUE);
}
gimp_image_flush (display->image);
}
else if (region_sel->region_mask)
{
if (options->sample_merged)
{
off_x = 0;
off_y = 0;
}
else
{
GimpDrawable *drawable;
drawable = gimp_image_get_active_drawable (display->image);
gimp_item_offsets (GIMP_ITEM (drawable), &off_x, &off_y);
}
gimp_channel_select_channel (gimp_image_get_mask (display->image),
GIMP_REGION_SELECT_TOOL_GET_CLASS (tool)->undo_desc,
region_sel->region_mask,
off_x,
off_y,
sel_options->operation,
sel_options->feather,
sel_options->feather_radius,
sel_options->feather_radius);
gimp_image_flush (display->image);
}
}
if (region_sel->region_mask)
{
g_object_unref (region_sel->region_mask);
region_sel->region_mask = NULL;
}
if (region_sel->segs)
{
g_free (region_sel->segs);
region_sel->segs = NULL;
region_sel->num_segs = 0;
}
/* Restore the original threshold */
g_object_set (options,
"threshold", region_sel->saved_threshold,
NULL);
}
