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gimp/app/tools/gimpvectortool.c
Michael Natterer 9c13b724d4 app/core/gimpimage-mask-select.c (gimp_image_mask_select_vectors) 
2003-09-12  Michael Natterer  <mitch@gimp.org>

	* app/core/gimpimage-mask-select.c (gimp_image_mask_select_vectors)
	* app/paint/gimppaintcore-stroke.c (gimp_paint_core_stroke_vectors)
	* app/display/gimpdisplayshell.c (gimp_display_shell_draw_vector)
	* app/tools/gimpdrawtool.c (gimp_draw_tool_real_draw)
	* app/tools/gimptransformtool.c (gimp_transform_tool_draw)
	* app/tools/gimpvectortool.c (gimp_vector_tool_vectors_visible)
	(gimp_vector_tool_draw): all callers of gimp_stroke_interpolate():
	don't leak the returned GimpCoords array and don't crash if it's
	NULL.

	* app/tools/gimpvectortool.[ch]: added VECTORS_SELECT_VECTOR state
	which enables activating any visible GimpVectors on any display.

	(gimp_vector_tool_on_handle)
	(gimp_vector_tool_on_curve): added a GimpVectors parameter so we
	can check for vectors which are not vector_tool->vectors.

	(gimp_vector_tool_oper_update): iterate gdisp->gimage->vectors
	to figure if we are hovering any visible vectors and set
	VECTORS_SELECT_VECTOR.

	(gimp_vector_tool_button_press): catch VECTORS_SELECT_VECTOR and
	start editing the selected vectors. Also make it the image's
	active_vectors.

	(gimp_vector_tool_button_release): removed unneeded call to
	gimp_viewable_invalidate_preview(vectors).

	Random cleanup all over the place.
2003-09-12 10:04:37 +00:00

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* Vector tool
* Copyright (C) 2003 Simon Budig <simon@gimp.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <stdlib.h>
#include <gtk/gtk.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpbase/gimpbase.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimp.h"
#include "core/gimpcontext.h"
#include "core/gimpimage.h"
#include "core/gimpimage-undo-push.h"
#include "core/gimplist.h"
#include "core/gimptoolinfo.h"
#include "vectors/gimpanchor.h"
#include "vectors/gimpvectors.h"
#include "vectors/gimpbezierstroke.h"
#include "widgets/gimphelp-ids.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplay-foreach.h"
#include "gimptoolcontrol.h"
#include "gimpvectoroptions.h"
#include "gimpvectortool.h"
#include "gimp-intl.h"
#define TARGET 9
#define TOGGLE_MASK GDK_SHIFT_MASK
#define MOVE_MASK GDK_MOD1_MASK
#define INSDEL_MASK GDK_CONTROL_MASK
/* local function prototypes */
static void gimp_vector_tool_class_init (GimpVectorToolClass *klass);
static void gimp_vector_tool_init (GimpVectorTool *tool);
static void gimp_vector_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *gdisp);
static void gimp_vector_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_vector_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_vector_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_vector_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_vector_tool_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_vector_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp);
static gboolean gimp_vector_tool_on_handle (GimpTool *tool,
GimpVectors *vectors,
GimpCoords *coords,
GimpAnchorType preferred,
GimpDisplay *gdisp,
GimpAnchor **ret_anchor,
GimpStroke **ret_stroke);
static gboolean gimp_vector_tool_on_curve (GimpTool *tool,
GimpVectors *vectors,
GimpCoords *coord,
GimpDisplay *gdisp,
GimpCoords *ret_coords,
gdouble *ret_pos,
GimpAnchor **ret_segment_start,
GimpStroke **ret_stroke);
static void gimp_vector_tool_draw (GimpDrawTool *draw_tool);
static void gimp_vector_tool_clear_vectors (GimpVectorTool *vector_tool);
static void gimp_vector_tool_vectors_visible (GimpVectors *vectors,
GimpVectorTool *vector_tool);
static void gimp_vector_tool_vectors_freeze (GimpVectors *vectors,
GimpVectorTool *vector_tool);
static void gimp_vector_tool_vectors_thaw (GimpVectors *vectors,
GimpVectorTool *vector_tool);
static GimpSelectionToolClass *parent_class = NULL;
void
gimp_vector_tool_register (GimpToolRegisterCallback callback,
gpointer data)
{
(* callback) (GIMP_TYPE_VECTOR_TOOL,
GIMP_TYPE_VECTOR_OPTIONS,
gimp_vector_options_gui,
0,
"gimp-path-tool",
_("Paths"),
_("Create and edit paths"),
N_("/Tools/_Paths"), NULL,
NULL, GIMP_HELP_TOOL_PATH,
GIMP_STOCK_TOOL_PATH,
data);
}
GType
gimp_vector_tool_get_type (void)
{
static GType tool_type = 0;
if (! tool_type)
{
static const GTypeInfo tool_info =
{
sizeof (GimpVectorToolClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_vector_tool_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpVectorTool),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_vector_tool_init,
};
tool_type = g_type_register_static (GIMP_TYPE_SELECTION_TOOL,
"GimpVectorTool",
&tool_info, 0);
}
return tool_type;
}
static void
gimp_vector_tool_class_init (GimpVectorToolClass *klass)
{
GObjectClass *object_class;
GimpToolClass *tool_class;
GimpDrawToolClass *draw_tool_class;
object_class = G_OBJECT_CLASS (klass);
tool_class = GIMP_TOOL_CLASS (klass);
draw_tool_class = GIMP_DRAW_TOOL_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
tool_class->control = gimp_vector_tool_control;
tool_class->button_press = gimp_vector_tool_button_press;
tool_class->button_release = gimp_vector_tool_button_release;
tool_class->motion = gimp_vector_tool_motion;
tool_class->modifier_key = gimp_vector_tool_modifier_key;
tool_class->oper_update = gimp_vector_tool_oper_update;
tool_class->cursor_update = gimp_vector_tool_cursor_update;
draw_tool_class->draw = gimp_vector_tool_draw;
}
static void
gimp_vector_tool_init (GimpVectorTool *vector_tool)
{
GimpTool *tool;
tool = GIMP_TOOL (vector_tool);
gimp_tool_control_set_scroll_lock (tool->control, TRUE);
gimp_tool_control_set_motion_mode (tool->control, GIMP_MOTION_MODE_COMPRESS);
gimp_tool_control_set_tool_cursor (tool->control,
GIMP_BEZIER_SELECT_TOOL_CURSOR);
vector_tool->function = VECTORS_CREATE_VECTOR;
vector_tool->restriction = GIMP_ANCHOR_FEATURE_NONE;
vector_tool->modifier_lock = 0;
vector_tool->last_x = 0;
vector_tool->last_y = 0;
vector_tool->cur_anchor = NULL;
vector_tool->cur_stroke = NULL;
vector_tool->cur_position = 0;
vector_tool->vectors = NULL;
vector_tool->sel_count = 0;
vector_tool->sel_anchor = NULL;
vector_tool->sel_stroke = NULL;
}
static void
gimp_vector_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *gdisp)
{
GimpVectorTool *vector_tool;
vector_tool = GIMP_VECTOR_TOOL (tool);
switch (action)
{
case PAUSE:
break;
case RESUME:
break;
case HALT:
/* gimp_tool_pop_status (tool); */
gimp_vector_tool_clear_vectors (vector_tool);
break;
default:
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, gdisp);
}
static void
gimp_vector_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpDrawTool *draw_tool;
GimpVectorTool *vector_tool;
GimpVectorOptions *options;
GimpVectors *vectors;
draw_tool = GIMP_DRAW_TOOL (tool);
vector_tool = GIMP_VECTOR_TOOL (tool);
options = GIMP_VECTOR_OPTIONS (tool->tool_info->tool_options);
g_return_if_fail (vector_tool->vectors != NULL ||
vector_tool->function == VECTORS_SELECT_VECTOR ||
vector_tool->function == VECTORS_CREATE_VECTOR);
/* Save the current modifier state */
vector_tool->saved_state = state;
/* if we are changing displays, pop the statusbar of the old one */
if (gdisp != tool->gdisp)
{
/* gimp_tool_pop_status (tool); */
}
gimp_draw_tool_pause (draw_tool);
if (vector_tool->function == VECTORS_SELECT_VECTOR)
{
g_print ("calling clear_vectors\n");
gimp_vector_tool_clear_vectors (vector_tool);
vector_tool->function = VECTORS_SELECT_VECTOR;
}
else if (vector_tool->vectors &&
gdisp->gimage != GIMP_ITEM (vector_tool->vectors)->gimage)
{
g_print ("calling clear_vectors\n");
gimp_vector_tool_clear_vectors (vector_tool);
}
if (gimp_draw_tool_is_active (draw_tool) && draw_tool->gdisp != gdisp)
{
g_print ("calling draw_tool_stop\n");
gimp_draw_tool_stop (draw_tool);
}
if (vector_tool->vectors)
gimp_image_undo_push_vectors_mod (GIMP_ITEM (vector_tool->vectors)->gimage,
"Vectors operation",
vector_tool->vectors);
gimp_tool_control_activate (tool->control);
tool->gdisp = gdisp;
/* select a vectors object */
if (vector_tool->function == VECTORS_SELECT_VECTOR)
{
gimp_vector_tool_set_vectors (vector_tool, vector_tool->select_vectors);
gimp_image_set_active_vectors (gdisp->gimage, vector_tool->select_vectors);
vector_tool->select_vectors = NULL;
vector_tool->function = VECTORS_FINISHED;
}
/* create a new vector from scratch */
if (vector_tool->function == VECTORS_CREATE_VECTOR)
{
vectors = gimp_vectors_new (gdisp->gimage, _("Unnamed"));
gimp_image_add_vectors (gdisp->gimage, vectors, -1);
gimp_image_flush (gdisp->gimage);
gimp_vector_tool_set_vectors (vector_tool, vectors);
vector_tool->function = VECTORS_CREATE_STROKE;
}
gimp_vectors_freeze (vector_tool->vectors);
/* create a new stroke */
if (vector_tool->function == VECTORS_CREATE_STROKE)
{
g_return_if_fail (vector_tool->vectors != NULL);
vector_tool->cur_stroke = gimp_bezier_stroke_new ();
gimp_vectors_stroke_add (vector_tool->vectors, vector_tool->cur_stroke);
vector_tool->sel_stroke = vector_tool->cur_stroke;
vector_tool->cur_anchor = NULL;
vector_tool->sel_anchor = NULL;
vector_tool->function = VECTORS_ADD_ANCHOR;
}
/* add an anchor to an existing stroke */
if (vector_tool->function == VECTORS_ADD_ANCHOR)
{
vector_tool->cur_anchor =
gimp_bezier_stroke_extend (vector_tool->sel_stroke, coords,
vector_tool->sel_anchor,
EXTEND_EDITABLE);
vector_tool->restriction = GIMP_ANCHOR_FEATURE_SYMMETRIC;
if (!options->polygonal)
vector_tool->function = VECTORS_MOVE_HANDLE;
else
vector_tool->function = VECTORS_MOVE_ANCHOR;
vector_tool->cur_stroke = vector_tool->sel_stroke;
}
/* Insertion of an anchor in a curve segment */
if (vector_tool->function == VECTORS_INSERT_ANCHOR)
{
vector_tool->cur_anchor =
gimp_stroke_anchor_insert (vector_tool->cur_stroke,
vector_tool->cur_anchor,
vector_tool->cur_position);
if (vector_tool->cur_anchor)
{
if (options->polygonal)
{
gimp_stroke_anchor_convert (vector_tool->cur_stroke,
vector_tool->cur_anchor,
GIMP_ANCHOR_FEATURE_EDGE);
}
vector_tool->function = VECTORS_MOVE_ANCHOR;
}
else
{
vector_tool->function = VECTORS_FINISHED;
}
}
/* move a handle */
if (vector_tool->function == VECTORS_MOVE_HANDLE)
{
if (vector_tool->cur_anchor->type == GIMP_ANCHOR_ANCHOR)
{
gimp_vectors_anchor_select (vector_tool->vectors,
vector_tool->cur_stroke,
vector_tool->cur_anchor, TRUE);
gimp_vector_tool_on_handle (tool, vector_tool->vectors, coords,
GIMP_ANCHOR_CONTROL, gdisp,
&(vector_tool->cur_anchor),
&(vector_tool->cur_stroke));
}
}
/* move an anchor */
if (vector_tool->function == VECTORS_MOVE_ANCHOR)
{
gimp_vectors_anchor_select (vector_tool->vectors,
vector_tool->cur_stroke,
vector_tool->cur_anchor, TRUE);
}
/* connect two strokes */
if (vector_tool->function == VECTORS_CONNECT_STROKES)
{
gimp_stroke_connect_stroke (vector_tool->sel_stroke,
vector_tool->sel_anchor,
vector_tool->cur_stroke,
vector_tool->cur_anchor);
if (vector_tool->cur_stroke != vector_tool->sel_stroke &&
gimp_stroke_is_empty (vector_tool->cur_stroke))
{
gimp_vectors_stroke_remove (vector_tool->vectors,
vector_tool->cur_stroke);
}
vector_tool->sel_anchor = vector_tool->cur_anchor;
vector_tool->cur_stroke = vector_tool->sel_stroke;
gimp_vectors_anchor_select (vector_tool->vectors,
vector_tool->sel_stroke,
vector_tool->sel_anchor, TRUE);
vector_tool->function = VECTORS_FINISHED;
}
/* move a curve segment directly */
if (vector_tool->function == VECTORS_MOVE_CURVE)
{
gimp_vectors_anchor_select (vector_tool->vectors,
vector_tool->cur_stroke,
vector_tool->cur_anchor, TRUE);
}
/* move a stroke or all strokes of a vectors object */
if (vector_tool->function == VECTORS_MOVE_STROKE ||
vector_tool->function == VECTORS_MOVE_VECTORS)
{
/* Work is being done in gimp_vector_tool_motion ()... */
vector_tool->last_x = coords->x;
vector_tool->last_y = coords->y;
}
/* convert an anchor to something that looks like an edge */
if (vector_tool->function == VECTORS_CONVERT_EDGE)
{
gimp_stroke_anchor_convert (vector_tool->cur_stroke,
vector_tool->cur_anchor,
GIMP_ANCHOR_FEATURE_EDGE);
if (vector_tool->cur_anchor->type == GIMP_ANCHOR_ANCHOR)
{
gimp_vectors_anchor_select (vector_tool->vectors,
vector_tool->cur_stroke,
vector_tool->cur_anchor, TRUE);
vector_tool->function = VECTORS_MOVE_ANCHOR;
}
else
{
vector_tool->cur_stroke = NULL;
vector_tool->cur_anchor = NULL;
/* avoid doing anything stupid */
vector_tool->function = VECTORS_FINISHED;
}
}
/* removal of a node in a stroke */
if (vector_tool->function == VECTORS_DELETE_ANCHOR)
{
gimp_stroke_anchor_delete (vector_tool->cur_stroke,
vector_tool->cur_anchor);
if (gimp_stroke_is_empty (vector_tool->cur_stroke))
gimp_vectors_stroke_remove (vector_tool->vectors,
vector_tool->cur_stroke);
vector_tool->cur_stroke = NULL;
vector_tool->cur_anchor = NULL;
vector_tool->function = VECTORS_FINISHED;
}
/* deleting a segment (opening up a stroke) */
if (vector_tool->function == VECTORS_DELETE_SEGMENT)
{
GimpStroke *new_stroke;
new_stroke = gimp_stroke_open (vector_tool->cur_stroke,
vector_tool->cur_anchor);
if (new_stroke)
gimp_vectors_stroke_add (vector_tool->vectors, new_stroke);
vector_tool->cur_stroke = NULL;
vector_tool->cur_anchor = NULL;
vector_tool->function = VECTORS_FINISHED;
}
gimp_vectors_thaw (vector_tool->vectors);
if (! gimp_draw_tool_is_active (draw_tool))
gimp_draw_tool_start (draw_tool, gdisp);
gimp_draw_tool_resume (draw_tool);
}
static void
gimp_vector_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpVectorTool *vector_tool;
vector_tool = GIMP_VECTOR_TOOL (tool);
vector_tool->function = VECTORS_FINISHED;
gimp_tool_control_halt (tool->control);
}
static void
gimp_vector_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpVectorTool *vector_tool;
GimpVectorOptions *options;
GimpAnchor *anchor;
vector_tool = GIMP_VECTOR_TOOL (tool);
options = GIMP_VECTOR_OPTIONS (tool->tool_info->tool_options);
if (vector_tool->function == VECTORS_FINISHED)
return;
gimp_vectors_freeze (vector_tool->vectors);
if ((vector_tool->saved_state & TOGGLE_MASK) != (state & TOGGLE_MASK))
vector_tool->modifier_lock = FALSE;
if (!vector_tool->modifier_lock)
{
if (state & TOGGLE_MASK)
{
vector_tool->restriction = GIMP_ANCHOR_FEATURE_SYMMETRIC;
}
else
{
vector_tool->restriction = GIMP_ANCHOR_FEATURE_NONE;
}
}
switch (vector_tool->function)
{
case VECTORS_MOVE_ANCHOR:
case VECTORS_MOVE_HANDLE:
anchor = vector_tool->cur_anchor;
if (anchor)
gimp_stroke_anchor_move_absolute (vector_tool->cur_stroke,
vector_tool->cur_anchor,
coords, vector_tool->restriction);
break;
case VECTORS_MOVE_CURVE:
gimp_stroke_point_move_absolute (vector_tool->cur_stroke,
vector_tool->cur_anchor,
vector_tool->cur_position,
coords, vector_tool->restriction);
break;
case VECTORS_MOVE_STROKE:
if (vector_tool->cur_stroke)
{
gimp_stroke_translate (vector_tool->cur_stroke,
coords->x - vector_tool->last_x,
coords->y - vector_tool->last_y);
}
else if (vector_tool->sel_stroke)
{
gimp_stroke_translate (vector_tool->sel_stroke,
coords->x - vector_tool->last_x,
coords->y - vector_tool->last_y);
}
vector_tool->last_x = coords->x;
vector_tool->last_y = coords->y;
break;
case VECTORS_MOVE_VECTORS:
gimp_item_translate (GIMP_ITEM (vector_tool->vectors),
coords->x - vector_tool->last_x,
coords->y - vector_tool->last_y, FALSE);
vector_tool->last_x = coords->x;
vector_tool->last_y = coords->y;
break;
default:
break;
}
gimp_vectors_thaw (vector_tool->vectors);
}
static void
gimp_vector_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpVectorOptions *options;
options = GIMP_VECTOR_OPTIONS (tool->tool_info->tool_options);
if (key == TOGGLE_MASK)
return;
if (state & MOVE_MASK)
{
g_object_set (options,
"vectors-edit-mode", GIMP_VECTOR_MODE_MOVE,
NULL);
}
else if (state & INSDEL_MASK)
{
g_object_set (options,
"vectors-edit-mode", GIMP_VECTOR_MODE_ADJUST,
NULL);
}
else
{
g_object_set (options,
"vectors-edit-mode", GIMP_VECTOR_MODE_CREATE,
NULL);
}
}
static gboolean
gimp_vector_tool_on_handle (GimpTool *tool,
GimpVectors *vectors,
GimpCoords *coords,
GimpAnchorType preferred,
GimpDisplay *gdisp,
GimpAnchor **ret_anchor,
GimpStroke **ret_stroke)
{
GimpVectorTool *vector_tool;
GimpStroke *stroke = NULL;
GimpStroke *pref_stroke = NULL;
GimpAnchor *anchor = NULL;
GimpAnchor *pref_anchor = NULL;
GList *list;
gdouble dx, dy;
gdouble pref_mindist = -1;
gdouble mindist = -1;
vector_tool = GIMP_VECTOR_TOOL (tool);
if (vectors == NULL || vectors->strokes == NULL)
{
if (ret_anchor)
*ret_anchor = NULL;
if (ret_stroke)
*ret_stroke = NULL;
return FALSE;
}
while ((stroke = gimp_vectors_stroke_get_next (vectors, stroke)))
{
GList *anchor_list;
anchor_list = gimp_stroke_get_draw_anchors (stroke);
list = gimp_stroke_get_draw_controls (stroke);
anchor_list = g_list_concat (anchor_list, list);
while (anchor_list)
{
dx = coords->x - GIMP_ANCHOR (anchor_list->data)->position.x;
dy = coords->y - GIMP_ANCHOR (anchor_list->data)->position.y;
if (mindist < 0 || mindist > dx * dx + dy * dy)
{
mindist = dx * dx + dy * dy;
anchor = GIMP_ANCHOR (anchor_list->data);
if (ret_stroke)
*ret_stroke = stroke;
}
if ((pref_mindist < 0 || pref_mindist > dx * dx + dy * dy) &&
GIMP_ANCHOR (anchor_list->data)->type == preferred)
{
pref_mindist = dx * dx + dy * dy;
pref_anchor = GIMP_ANCHOR (anchor_list->data);
pref_stroke = stroke;
}
anchor_list = anchor_list->next;
}
g_list_free (anchor_list);
}
/* If the data passed into ret_anchor is a preferred anchor, return
* it.
*/
if (ret_anchor && *ret_anchor
&& gimp_draw_tool_on_handle (GIMP_DRAW_TOOL (tool), gdisp,
coords->x,
coords->y,
GIMP_HANDLE_CIRCLE,
(*ret_anchor)->position.x,
(*ret_anchor)->position.y,
TARGET,
TARGET,
GTK_ANCHOR_CENTER,
FALSE)
&& (*ret_anchor)->type == preferred)
{
if (ret_stroke)
*ret_stroke = pref_stroke;
return TRUE;
}
if (pref_anchor && gimp_draw_tool_on_handle (GIMP_DRAW_TOOL (tool), gdisp,
coords->x,
coords->y,
GIMP_HANDLE_CIRCLE,
pref_anchor->position.x,
pref_anchor->position.y,
TARGET,
TARGET,
GTK_ANCHOR_CENTER,
FALSE))
{
if (ret_anchor)
*ret_anchor = pref_anchor;
if (ret_stroke)
*ret_stroke = pref_stroke;
return TRUE;
}
else if (anchor && gimp_draw_tool_on_handle (GIMP_DRAW_TOOL (tool), gdisp,
coords->x,
coords->y,
GIMP_HANDLE_CIRCLE,
anchor->position.x,
anchor->position.y,
TARGET,
TARGET,
GTK_ANCHOR_CENTER,
FALSE))
{
if (ret_anchor)
*ret_anchor = anchor;
/* *ret_stroke already set correctly. */
return TRUE;
}
else
{
if (ret_anchor)
*ret_anchor = NULL;
if (ret_stroke)
*ret_stroke = NULL;
return FALSE;
}
}
static gboolean
gimp_vector_tool_on_curve (GimpTool *tool,
GimpVectors *vectors,
GimpCoords *coord,
GimpDisplay *gdisp,
GimpCoords *ret_coords,
gdouble *ret_pos,
GimpAnchor **ret_segment_start,
GimpStroke **ret_stroke)
{
GimpVectorTool *vector_tool;
GimpStroke *stroke = NULL;
GimpAnchor *segment_start;
GimpCoords min_coords, cur_coords;
gdouble min_dist, cur_dist, cur_pos;
vector_tool = GIMP_VECTOR_TOOL (tool);
min_dist = -1.0;
while ((stroke = gimp_vectors_stroke_get_next (vectors, stroke)))
{
cur_dist = gimp_stroke_nearest_point_get (stroke, coord, 1.0,
&cur_coords,
&segment_start,
&cur_pos);
if (cur_dist < min_dist || min_dist < 0)
{
min_dist = cur_dist;
min_coords = cur_coords;
if (ret_coords) *ret_coords = cur_coords;
if (ret_pos) *ret_pos = cur_pos;
if (ret_segment_start) *ret_segment_start = segment_start;
if (ret_stroke) *ret_stroke = stroke;
}
}
if (min_dist >= 0 &&
gimp_draw_tool_on_handle (GIMP_DRAW_TOOL (tool), gdisp,
coord->x,
coord->y,
GIMP_HANDLE_CIRCLE,
min_coords.x,
min_coords.y,
TARGET,
TARGET,
GTK_ANCHOR_CENTER,
FALSE))
{
return TRUE;
}
else
{
if (ret_coords) *ret_coords = *coord;
if (ret_pos) *ret_pos = 0.0;
if (ret_segment_start) *ret_segment_start = NULL;
if (ret_stroke) *ret_stroke = NULL;
return FALSE;
}
}
static void
gimp_vector_tool_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpVectorTool *vector_tool;
GimpVectorOptions *options;
GimpVectors *select_vectors = NULL;
GimpAnchor *anchor = NULL;
GimpStroke *stroke = NULL;
gdouble position = -1;
gboolean on_handle = FALSE;
gboolean on_curve = FALSE;
vector_tool = GIMP_VECTOR_TOOL (tool);
options = GIMP_VECTOR_OPTIONS (tool->tool_info->tool_options);
vector_tool->modifier_lock = FALSE;
/* are we hovering the current vectors on the current display? */
if (vector_tool->vectors && GIMP_DRAW_TOOL (tool)->gdisp == gdisp)
{
on_handle = gimp_vector_tool_on_handle (tool, vector_tool->vectors,
coords, GIMP_ANCHOR_ANCHOR,
gdisp, &anchor, &stroke);
if (! on_handle)
on_curve = gimp_vector_tool_on_curve (tool, vector_tool->vectors,
coords, gdisp, NULL,
&position, &anchor, &stroke);
}
/* if not, are we hovering any visible vectors on any display? */
if (! on_handle && ! on_curve)
{
GList *list;
for (list = GIMP_LIST (gdisp->gimage->vectors)->list;
list;
list = g_list_next (list))
{
GimpVectors *vectors = list->data;
if (! gimp_item_get_visible (GIMP_ITEM (vectors)))
continue;
on_handle = gimp_vector_tool_on_handle (tool, vectors, coords,
GIMP_ANCHOR_ANCHOR,
gdisp, &anchor, &stroke);
if (! on_handle)
on_curve = gimp_vector_tool_on_curve (tool, vectors, coords,
gdisp, NULL,
&position, &anchor, &stroke);
if (on_handle || on_curve)
{
/* we *are* hovering a visible vectors on some display */
select_vectors = vectors;
break;
}
}
}
vector_tool->cur_position = position;
vector_tool->cur_anchor = anchor;
vector_tool->cur_stroke = stroke;
vector_tool->select_vectors = select_vectors;
if (select_vectors)
{
vector_tool->function = VECTORS_SELECT_VECTOR;
return;
}
switch (options->edit_mode)
{
case GIMP_VECTOR_MODE_CREATE:
if (! vector_tool->vectors || GIMP_DRAW_TOOL (tool)->gdisp != gdisp)
{
vector_tool->function = VECTORS_CREATE_VECTOR;
vector_tool->restriction = GIMP_ANCHOR_FEATURE_SYMMETRIC;
vector_tool->modifier_lock = TRUE;
}
else if (on_handle)
{
if (anchor->type == GIMP_ANCHOR_ANCHOR)
{
vector_tool->function = VECTORS_MOVE_ANCHOR;
}
else
{
vector_tool->function = VECTORS_MOVE_HANDLE;
if (state & TOGGLE_MASK)
vector_tool->restriction = GIMP_ANCHOR_FEATURE_SYMMETRIC;
else
vector_tool->restriction = GIMP_ANCHOR_FEATURE_NONE;
}
}
else if (on_curve)
{
if (gimp_stroke_point_is_movable (stroke, anchor, position))
{
vector_tool->function = VECTORS_MOVE_CURVE;
if (state & TOGGLE_MASK)
vector_tool->restriction = GIMP_ANCHOR_FEATURE_SYMMETRIC;
else
vector_tool->restriction = GIMP_ANCHOR_FEATURE_NONE;
}
else
{
vector_tool->function = VECTORS_FINISHED;
}
}
else
{
if (vector_tool->sel_stroke && vector_tool->sel_anchor &&
gimp_stroke_is_extendable (vector_tool->sel_stroke,
vector_tool->sel_anchor) &&
!(state & TOGGLE_MASK))
vector_tool->function = VECTORS_ADD_ANCHOR;
else
vector_tool->function = VECTORS_CREATE_STROKE;
vector_tool->restriction = GIMP_ANCHOR_FEATURE_SYMMETRIC;
vector_tool->modifier_lock = TRUE;
}
break;
case GIMP_VECTOR_MODE_ADJUST:
if (! vector_tool->vectors || GIMP_DRAW_TOOL (tool)->gdisp != gdisp)
{
vector_tool->function = VECTORS_FINISHED;
}
else if (on_handle)
{
if (anchor->type == GIMP_ANCHOR_ANCHOR)
{
if (!(state & TOGGLE_MASK) && vector_tool->sel_anchor &&
vector_tool->sel_anchor != anchor &&
gimp_stroke_is_extendable (vector_tool->sel_stroke,
vector_tool->sel_anchor) &&
gimp_stroke_is_extendable (stroke, anchor))
{
vector_tool->function = VECTORS_CONNECT_STROKES;
}
else
{
vector_tool->function = VECTORS_DELETE_ANCHOR;
}
}
else
{
vector_tool->function = VECTORS_CONVERT_EDGE;
if (state & TOGGLE_MASK)
vector_tool->restriction = GIMP_ANCHOR_FEATURE_SYMMETRIC;
else
vector_tool->restriction = GIMP_ANCHOR_FEATURE_NONE;
}
}
else if (on_curve)
{
if (state & TOGGLE_MASK)
{
vector_tool->function = VECTORS_DELETE_SEGMENT;
}
else if (gimp_stroke_anchor_is_insertable (stroke, anchor, position))
{
vector_tool->function = VECTORS_INSERT_ANCHOR;
}
else
{
vector_tool->function = VECTORS_FINISHED;
}
}
else
{
vector_tool->function = VECTORS_FINISHED;
}
break;
case GIMP_VECTOR_MODE_MOVE:
if (! vector_tool->vectors ||
! vector_tool->vectors->strokes ||
GIMP_DRAW_TOOL (tool)->gdisp != gdisp)
{
vector_tool->function = VECTORS_FINISHED;
}
else if (state & TOGGLE_MASK)
{
vector_tool->function = VECTORS_MOVE_VECTORS;
}
else
{
vector_tool->function = VECTORS_MOVE_STROKE;
}
break;
}
}
static void
gimp_vector_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpVectorTool *vector_tool;
GimpToolCursorType tool_cursor;
GimpCursorType cursor;
GimpCursorModifier cmodifier;
vector_tool = GIMP_VECTOR_TOOL (tool);
tool_cursor = gimp_tool_control_get_tool_cursor (tool->control);
cursor = GIMP_MOUSE_CURSOR;
cmodifier = GIMP_CURSOR_MODIFIER_NONE;
switch (vector_tool->function)
{
case VECTORS_SELECT_VECTOR:
cmodifier = GIMP_CURSOR_MODIFIER_ANCHOR;
break;
case VECTORS_CREATE_VECTOR:
case VECTORS_CREATE_STROKE:
cmodifier = GIMP_CURSOR_MODIFIER_CONTROL;
break;
case VECTORS_ADD_ANCHOR:
case VECTORS_INSERT_ANCHOR:
cmodifier = GIMP_CURSOR_MODIFIER_PLUS;
break;
case VECTORS_DELETE_ANCHOR:
case VECTORS_DELETE_SEGMENT:
cmodifier = GIMP_CURSOR_MODIFIER_MINUS;
break;
case VECTORS_MOVE_HANDLE:
case VECTORS_CONVERT_EDGE:
cmodifier = GIMP_CURSOR_MODIFIER_HAND;
break;
case VECTORS_MOVE_ANCHOR:
case VECTORS_MOVE_CURVE:
case VECTORS_MOVE_STROKE:
case VECTORS_MOVE_VECTORS:
cmodifier = GIMP_CURSOR_MODIFIER_MOVE;
break;
case VECTORS_CONNECT_STROKES:
cmodifier = GIMP_CURSOR_MODIFIER_INTERSECT;
break;
default:
cursor = GIMP_BAD_CURSOR;
cmodifier = GIMP_CURSOR_MODIFIER_NONE;
break;
}
/*
* gimp_tool_control_set_cursor (tool->control, ctype);
* gimp_tool_control_set_tool_cursor (tool->control,
* GIMP_BEZIER_SELECT_TOOL_CURSOR);
* gimp_tool_control_set_cursor_modifier (tool->control, cmodifier);
*/
gimp_tool_set_cursor (tool, gdisp, cursor, tool_cursor, cmodifier);
}
static void
gimp_vector_tool_draw (GimpDrawTool *draw_tool)
{
GimpVectorTool *vector_tool;
GimpTool *tool;
GimpAnchor *cur_anchor = NULL;
GimpStroke *cur_stroke = NULL;
GimpVectors *vectors;
GArray *coords;
gboolean closed;
GList *draw_anchors;
GList *list;
vector_tool = GIMP_VECTOR_TOOL (draw_tool);
tool = GIMP_TOOL (draw_tool);
vectors = vector_tool->vectors;
if (!vectors)
return;
while ((cur_stroke = gimp_vectors_stroke_get_next (vectors, cur_stroke)))
{
/* anchor handles */
draw_anchors = gimp_stroke_get_draw_anchors (cur_stroke);
for (list = draw_anchors; list; list = g_list_next (list))
{
cur_anchor = GIMP_ANCHOR (list->data);
if (cur_anchor->type == GIMP_ANCHOR_ANCHOR)
{
gimp_draw_tool_draw_handle (draw_tool,
cur_anchor->selected ?
GIMP_HANDLE_CIRCLE :
GIMP_HANDLE_FILLED_CIRCLE,
cur_anchor->position.x,
cur_anchor->position.y,
TARGET,
TARGET,
GTK_ANCHOR_CENTER,
FALSE);
}
}
g_list_free (draw_anchors);
/* control handles */
draw_anchors = gimp_stroke_get_draw_controls (cur_stroke);
for (list = draw_anchors; list; list = g_list_next (list))
{
cur_anchor = GIMP_ANCHOR (list->data);
gimp_draw_tool_draw_handle (draw_tool,
GIMP_HANDLE_SQUARE,
cur_anchor->position.x,
cur_anchor->position.y,
TARGET - 3,
TARGET - 3,
GTK_ANCHOR_CENTER,
FALSE);
}
g_list_free (draw_anchors);
/* the lines to the control handles */
coords = gimp_stroke_get_draw_lines (cur_stroke);
if (coords)
{
if (coords->len % 2 == 0)
{
gint i;
for (i = 0; i < coords->len; i += 2)
{
gimp_draw_tool_draw_dashed_line (draw_tool,
g_array_index (coords, GimpCoords, i).x,
g_array_index (coords, GimpCoords, i).y,
g_array_index (coords, GimpCoords, i + 1).x,
g_array_index (coords, GimpCoords, i + 1).y,
FALSE);
}
}
g_array_free (coords, TRUE);
}
/* the stroke itself */
if (! gimp_item_get_visible (GIMP_ITEM (vectors)))
{
coords = gimp_stroke_interpolate (cur_stroke, 1.0, &closed);
if (coords)
{
if (coords->len)
gimp_draw_tool_draw_strokes (draw_tool,
&g_array_index (coords,
GimpCoords, 0),
coords->len, FALSE, FALSE);
g_array_free (coords, TRUE);
}
}
}
}
static void
gimp_vector_tool_clear_vectors (GimpVectorTool *vector_tool)
{
g_return_if_fail (GIMP_IS_VECTOR_TOOL (vector_tool));
gimp_vector_tool_set_vectors (vector_tool, NULL);
}
static void
gimp_vector_tool_vectors_visible (GimpVectors *vectors,
GimpVectorTool *vector_tool)
{
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (vector_tool);
if (gimp_draw_tool_is_active (draw_tool) && draw_tool->paused_count == 0)
{
GimpStroke *cur_stroke = NULL;
while ((cur_stroke = gimp_vectors_stroke_get_next (vectors, cur_stroke)))
{
GArray *coords;
gboolean closed;
coords = gimp_stroke_interpolate (cur_stroke, 1.0, &closed);
if (coords)
{
if (coords->len)
gimp_draw_tool_draw_strokes (draw_tool,
&g_array_index (coords,
GimpCoords, 0),
coords->len, FALSE, FALSE);
g_array_free (coords, TRUE);
}
}
}
}
static void
gimp_vector_tool_vectors_freeze (GimpVectors *vectors,
GimpVectorTool *vector_tool)
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (vector_tool));
}
static void
gimp_vector_tool_vectors_thaw (GimpVectors *vectors,
GimpVectorTool *vector_tool)
{
GimpStroke *cur_stroke = NULL;
GimpAnchor *cur_anchor;
GList *draw_anchors;
GList *list;
gboolean cur_anchor_valid;
gboolean cur_stroke_valid;
/* Ok, the vector might have changed externally (e.g. Undo)
* we need to validate our internal state. */
cur_anchor_valid = FALSE;
cur_stroke_valid = FALSE;
vector_tool->sel_count = 0;
vector_tool->sel_anchor = NULL;
vector_tool->sel_stroke = NULL;
while ((cur_stroke = gimp_vectors_stroke_get_next (vectors, cur_stroke)))
{
/* anchor handles */
draw_anchors = gimp_stroke_get_draw_anchors (cur_stroke);
if (cur_stroke == vector_tool->cur_stroke)
cur_stroke_valid = TRUE;
for (list = draw_anchors; list; list = g_list_next (list))
{
cur_anchor = GIMP_ANCHOR (list->data);
if (cur_anchor == vector_tool->cur_anchor)
cur_anchor_valid = TRUE;
if (cur_anchor->type == GIMP_ANCHOR_ANCHOR &&
cur_anchor->selected)
{
vector_tool->sel_count++;
if (vector_tool->sel_count == 1)
{
vector_tool->sel_anchor = cur_anchor;
vector_tool->sel_stroke = cur_stroke;
}
else
{
vector_tool->sel_anchor = NULL;
vector_tool->sel_stroke = NULL;
}
}
}
draw_anchors = gimp_stroke_get_draw_controls (cur_stroke);
for (list = draw_anchors; list; list = g_list_next (list))
{
cur_anchor = GIMP_ANCHOR (list->data);
if (cur_anchor == vector_tool->cur_anchor)
cur_anchor_valid = TRUE;
}
}
if (!cur_stroke_valid)
vector_tool->cur_stroke = NULL;
if (!cur_anchor_valid)
vector_tool->cur_anchor = NULL;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (vector_tool));
}
void
gimp_vector_tool_set_vectors (GimpVectorTool *vector_tool,
GimpVectors *vectors)
{
GimpDrawTool *draw_tool;
GimpTool *tool;
GimpItem *item = NULL;
g_return_if_fail (GIMP_IS_VECTOR_TOOL (vector_tool));
g_return_if_fail (vectors == NULL || GIMP_IS_VECTORS (vectors));
draw_tool = GIMP_DRAW_TOOL (vector_tool);
tool = GIMP_TOOL (vector_tool);
if (vectors)
item = GIMP_ITEM (vectors);
if (vectors == vector_tool->vectors)
return;
gimp_draw_tool_pause (draw_tool);
if (gimp_draw_tool_is_active (draw_tool) &&
(! vectors || draw_tool->gdisp->gimage != item->gimage))
gimp_draw_tool_stop (draw_tool);
if (vector_tool->vectors)
{
g_signal_handlers_disconnect_by_func (vector_tool->vectors,
gimp_vector_tool_clear_vectors,
vector_tool);
g_signal_handlers_disconnect_by_func (vector_tool->vectors,
gimp_vector_tool_vectors_visible,
vector_tool);
g_signal_handlers_disconnect_by_func (vector_tool->vectors,
gimp_vector_tool_vectors_freeze,
vector_tool);
g_signal_handlers_disconnect_by_func (vector_tool->vectors,
gimp_vector_tool_vectors_thaw,
vector_tool);
g_object_unref (vector_tool->vectors);
}
vector_tool->vectors = vectors;
vector_tool->cur_stroke = NULL;
vector_tool->cur_anchor = NULL;
vector_tool->function = VECTORS_MOVE_ANCHOR;
if (! vector_tool->vectors)
{
tool->gdisp = NULL;
/* leave draw_tool->paused_count in a consistent state */
gimp_draw_tool_resume (draw_tool);
vector_tool->function = VECTORS_CREATE_VECTOR;
return;
}
g_object_ref (vectors);
g_signal_connect_object (vectors, "removed",
G_CALLBACK (gimp_vector_tool_clear_vectors),
vector_tool,
G_CONNECT_SWAPPED);
g_signal_connect_object (vectors, "visibility_changed",
G_CALLBACK (gimp_vector_tool_vectors_visible),
vector_tool,
0);
g_signal_connect_object (vectors, "freeze",
G_CALLBACK (gimp_vector_tool_vectors_freeze),
vector_tool,
0);
g_signal_connect_object (vectors, "thaw",
G_CALLBACK (gimp_vector_tool_vectors_thaw),
vector_tool,
0);
if (! gimp_draw_tool_is_active (draw_tool))
{
if (tool->gdisp && tool->gdisp->gimage == item->gimage)
{
gimp_draw_tool_start (draw_tool, tool->gdisp);
}
else
{
GimpContext *context;
GimpDisplay *gdisp;
context = gimp_get_user_context (tool->tool_info->gimp);
gdisp = gimp_context_get_display (context);
if (! gdisp || gdisp->gimage != item->gimage)
{
GList *list;
gdisp = NULL;
for (list = GIMP_LIST (item->gimage->gimp->displays)->list;
list;
list = g_list_next (list))
{
if (((GimpDisplay *) list->data)->gimage == item->gimage)
{
gimp_context_set_display (context,
(GimpDisplay *) list->data);
gdisp = gimp_context_get_display (context);
break;
}
}
}
tool->gdisp = gdisp;
if (tool->gdisp)
gimp_draw_tool_start (draw_tool, tool->gdisp);
}
}
gimp_draw_tool_resume (draw_tool);
}
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