Commit c4d56939 authored by Michael Natterer's avatar Michael Natterer 😴

app: add various handle and vectors hit tests to gimpcanvasitems-utils.[ch]

1:1 copies of the same functions in gimpdrawtool.[ch].
parent a78d45fc
......@@ -23,10 +23,331 @@
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpmath/gimpmath.h"
#include "display-types.h"
#include "core/gimpimage.h"
#include "vectors/gimpanchor.h"
#include "vectors/gimpbezierstroke.h"
#include "vectors/gimpvectors.h"
#include "gimpcanvasitem.h"
#include "gimpcanvasitem-utils.h"
#include "gimpdisplay.h"
#include "gimpdisplayshell.h"
#include "gimpdisplayshell-transform.h"
gboolean
gimp_canvas_item_on_handle (GimpCanvasItem *item,
gdouble x,
gdouble y,
GimpHandleType type,
gdouble handle_x,
gdouble handle_y,
gint width,
gint height,
GimpHandleAnchor anchor)
{
GimpDisplayShell *shell;
gdouble tx, ty;
gdouble handle_tx, handle_ty;
g_return_val_if_fail (GIMP_IS_CANVAS_ITEM (item), FALSE);
shell = gimp_canvas_item_get_shell (item);
gimp_display_shell_zoom_xy_f (shell,
x, y,
&tx, &ty);
gimp_display_shell_zoom_xy_f (shell,
handle_x, handle_y,
&handle_tx, &handle_ty);
switch (type)
{
case GIMP_HANDLE_SQUARE:
case GIMP_HANDLE_FILLED_SQUARE:
case GIMP_HANDLE_CROSS:
case GIMP_HANDLE_CROSSHAIR:
gimp_canvas_item_shift_to_north_west (anchor,
handle_tx, handle_ty,
width, height,
&handle_tx, &handle_ty);
return (tx == CLAMP (tx, handle_tx, handle_tx + width) &&
ty == CLAMP (ty, handle_ty, handle_ty + height));
case GIMP_HANDLE_CIRCLE:
case GIMP_HANDLE_FILLED_CIRCLE:
gimp_canvas_item_shift_to_center (anchor,
handle_tx, handle_ty,
width, height,
&handle_tx, &handle_ty);
/* FIXME */
if (width != height)
width = (width + height) / 2;
width /= 2;
return ((SQR (handle_tx - tx) + SQR (handle_ty - ty)) < SQR (width));
default:
g_warning ("%s: invalid handle type %d", G_STRFUNC, type);
break;
}
return FALSE;
}
gboolean
gimp_canvas_item_on_vectors_handle (GimpCanvasItem *item,
GimpVectors *vectors,
const GimpCoords *coord,
gint width,
gint height,
GimpAnchorType preferred,
gboolean exclusive,
GimpAnchor **ret_anchor,
GimpStroke **ret_stroke)
{
GimpStroke *stroke = NULL;
GimpStroke *pref_stroke = NULL;
GimpAnchor *anchor = NULL;
GimpAnchor *pref_anchor = NULL;
gdouble dx, dy;
gdouble pref_mindist = -1;
gdouble mindist = -1;
g_return_val_if_fail (GIMP_IS_CANVAS_ITEM (item), FALSE);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), FALSE);
g_return_val_if_fail (coord != NULL, FALSE);
if (ret_anchor) *ret_anchor = NULL;
if (ret_stroke) *ret_stroke = NULL;
while ((stroke = gimp_vectors_stroke_get_next (vectors, stroke)))
{
GList *anchor_list;
GList *list;
anchor_list = g_list_concat (gimp_stroke_get_draw_anchors (stroke),
gimp_stroke_get_draw_controls (stroke));
for (list = anchor_list; list; list = g_list_next (list))
{
dx = coord->x - GIMP_ANCHOR (list->data)->position.x;
dy = coord->y - GIMP_ANCHOR (list->data)->position.y;
if (mindist < 0 || mindist > dx * dx + dy * dy)
{
mindist = dx * dx + dy * dy;
anchor = GIMP_ANCHOR (list->data);
if (ret_stroke)
*ret_stroke = stroke;
}
if ((pref_mindist < 0 || pref_mindist > dx * dx + dy * dy) &&
GIMP_ANCHOR (list->data)->type == preferred)
{
pref_mindist = dx * dx + dy * dy;
pref_anchor = GIMP_ANCHOR (list->data);
pref_stroke = stroke;
}
}
g_list_free (anchor_list);
}
/* If the data passed into ret_anchor is a preferred anchor, return it. */
if (ret_anchor && *ret_anchor &&
gimp_canvas_item_on_handle (item,
coord->x,
coord->y,
GIMP_HANDLE_CIRCLE,
(*ret_anchor)->position.x,
(*ret_anchor)->position.y,
width, height,
GIMP_HANDLE_ANCHOR_CENTER) &&
(*ret_anchor)->type == preferred)
{
if (ret_stroke) *ret_stroke = pref_stroke;
return TRUE;
}
if (pref_anchor && gimp_canvas_item_on_handle (item,
coord->x,
coord->y,
GIMP_HANDLE_CIRCLE,
pref_anchor->position.x,
pref_anchor->position.y,
width, height,
GIMP_HANDLE_ANCHOR_CENTER))
{
if (ret_anchor) *ret_anchor = pref_anchor;
if (ret_stroke) *ret_stroke = pref_stroke;
return TRUE;
}
else if (!exclusive && anchor &&
gimp_canvas_item_on_handle (item,
coord->x,
coord->y,
GIMP_HANDLE_CIRCLE,
anchor->position.x,
anchor->position.y,
width, height,
GIMP_HANDLE_ANCHOR_CENTER))
{
if (ret_anchor)
*ret_anchor = anchor;
/* *ret_stroke already set correctly. */
return TRUE;
}
if (ret_anchor)
*ret_anchor = NULL;
if (ret_stroke)
*ret_stroke = NULL;
return FALSE;
}
gboolean
gimp_canvas_item_on_vectors_curve (GimpCanvasItem *item,
GimpVectors *vectors,
const GimpCoords *coord,
gint width,
gint height,
GimpCoords *ret_coords,
gdouble *ret_pos,
GimpAnchor **ret_segment_start,
GimpAnchor **ret_segment_end,
GimpStroke **ret_stroke)
{
GimpStroke *stroke = NULL;
GimpAnchor *segment_start;
GimpAnchor *segment_end;
GimpCoords min_coords = GIMP_COORDS_DEFAULT_VALUES;
GimpCoords cur_coords;
gdouble min_dist, cur_dist, cur_pos;
g_return_val_if_fail (GIMP_IS_CANVAS_ITEM (item), FALSE);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), FALSE);
g_return_val_if_fail (coord != NULL, FALSE);
if (ret_coords) *ret_coords = *coord;
if (ret_pos) *ret_pos = -1.0;
if (ret_segment_start) *ret_segment_start = NULL;
if (ret_segment_end) *ret_segment_end = NULL;
if (ret_stroke) *ret_stroke = NULL;
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,
&segment_end,
&cur_pos);
if (cur_dist >= 0 && (min_dist < 0 || cur_dist < min_dist))
{
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_segment_end) *ret_segment_end = segment_end;
if (ret_stroke) *ret_stroke = stroke;
}
}
if (min_dist >= 0 &&
gimp_canvas_item_on_handle (item,
coord->x,
coord->y,
GIMP_HANDLE_CIRCLE,
min_coords.x,
min_coords.y,
width, height,
GIMP_HANDLE_ANCHOR_CENTER))
{
return TRUE;
}
return FALSE;
}
gboolean
gimp_canvas_item_on_vectors (GimpCanvasItem *item,
const GimpCoords *coords,
gint width,
gint height,
GimpCoords *ret_coords,
gdouble *ret_pos,
GimpAnchor **ret_segment_start,
GimpAnchor **ret_segment_end,
GimpStroke **ret_stroke,
GimpVectors **ret_vectors)
{
GimpDisplayShell *shell;
GimpImage *image;
GList *all_vectors;
GList *list;
g_return_val_if_fail (GIMP_IS_CANVAS_ITEM (item), FALSE);
g_return_val_if_fail (coords != NULL, FALSE);
shell = gimp_canvas_item_get_shell (item);
image = gimp_display_get_image (shell->display);
if (ret_coords) *ret_coords = *coords;
if (ret_pos) *ret_pos = -1.0;
if (ret_segment_start) *ret_segment_start = NULL;
if (ret_segment_end) *ret_segment_end = NULL;
if (ret_stroke) *ret_stroke = NULL;
if (ret_vectors) *ret_vectors = NULL;
all_vectors = gimp_image_get_vectors_list (image);
for (list = all_vectors; list; list = g_list_next (list))
{
GimpVectors *vectors = list->data;
if (! gimp_item_get_visible (GIMP_ITEM (vectors)))
continue;
if (gimp_canvas_item_on_vectors_curve (item,
vectors, coords,
width, height,
ret_coords,
ret_pos,
ret_segment_start,
ret_segment_end,
ret_stroke))
{
if (ret_vectors)
*ret_vectors = vectors;
g_list_free (all_vectors);
return TRUE;
}
}
g_list_free (all_vectors);
return FALSE;
}
void
gimp_canvas_item_shift_to_north_west (GimpHandleAnchor anchor,
......
......@@ -22,20 +22,60 @@
#define __GIMP_CANVAS_ITEM_UTILS_H__
void gimp_canvas_item_shift_to_north_west (GimpHandleAnchor anchor,
gdouble x,
gdouble y,
gint width,
gint height,
gdouble *shifted_x,
gdouble *shifted_y);
void gimp_canvas_item_shift_to_center (GimpHandleAnchor anchor,
gdouble x,
gdouble y,
gint width,
gint height,
gdouble *shifted_x,
gdouble *shifted_y);
gboolean gimp_canvas_item_on_handle (GimpCanvasItem *item,
gdouble x,
gdouble y,
GimpHandleType type,
gdouble handle_x,
gdouble handle_y,
gint width,
gint height,
GimpHandleAnchor anchor);
gboolean gimp_canvas_item_on_vectors_handle (GimpCanvasItem *item,
GimpVectors *vectors,
const GimpCoords *coord,
gint width,
gint height,
GimpAnchorType preferred,
gboolean exclusive,
GimpAnchor **ret_anchor,
GimpStroke **ret_stroke);
gboolean gimp_canvas_item_on_vectors_curve (GimpCanvasItem *item,
GimpVectors *vectors,
const GimpCoords *coord,
gint width,
gint height,
GimpCoords *ret_coords,
gdouble *ret_pos,
GimpAnchor **ret_segment_start,
GimpAnchor **ret_segment_end,
GimpStroke **ret_stroke);
gboolean gimp_canvas_item_on_vectors (GimpCanvasItem *item,
const GimpCoords *coords,
gint width,
gint height,
GimpCoords *ret_coords,
gdouble *ret_pos,
GimpAnchor **ret_segment_start,
GimpAnchor **ret_segment_end,
GimpStroke **ret_stroke,
GimpVectors **ret_vectors);
void gimp_canvas_item_shift_to_north_west (GimpHandleAnchor anchor,
gdouble x,
gdouble y,
gint width,
gint height,
gdouble *shifted_x,
gdouble *shifted_y);
void gimp_canvas_item_shift_to_center (GimpHandleAnchor anchor,
gdouble x,
gdouble y,
gint width,
gint height,
gdouble *shifted_x,
gdouble *shifted_y);
#endif /* __GIMP_CANVAS_ITEM_UTILS_H__ */
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