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/*
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This is a plug-in for GIMP.
*
* Generates images containing vector type drawings.
*
* Copyright (C) 1997 Andy Thomas alt@picnic.demon.co.uk
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "config.h"
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "gfig.h"
#include "gfig-dobject.h"
#include "gfig-rectangle.h"
#include "libgimp/stdplugins-intl.h"
static void d_draw_rectangle (GfigObject *obj,
cairo_t *cr);
static void d_paint_rectangle (GfigObject *obj);
static GfigObject *d_copy_rectangle (GfigObject *obj);
static void d_update_rectangle (GdkPoint *pnt);
static void
d_draw_rectangle (GfigObject *obj,
cairo_t *cr)
{
DobjPoints *first_pnt;
DobjPoints *second_pnt;
gint xmin, ymin;
gint xmax, ymax;
first_pnt = obj->points;
if (!first_pnt)
return; /* End-of-line */
draw_sqr (&first_pnt->pnt, obj == gfig_context->selected_obj, cr);
second_pnt = first_pnt->next;
if (!second_pnt)
return;
if (obj == obj_creating)
draw_circle (&second_pnt->pnt, TRUE, cr);
else
draw_sqr (&second_pnt->pnt, obj == gfig_context->selected_obj, cr);
xmin = MIN (gfig_scale_x (first_pnt->pnt.x),
gfig_scale_x (second_pnt->pnt.x));
ymin = MIN (gfig_scale_y (first_pnt->pnt.y),
gfig_scale_y (second_pnt->pnt.y));
xmax = MAX (gfig_scale_x (first_pnt->pnt.x),
gfig_scale_x (second_pnt->pnt.x));
ymax = MAX (gfig_scale_y (first_pnt->pnt.y),
gfig_scale_y (second_pnt->pnt.y));
cairo_rectangle (cr, xmin + .5, ymin + .5, xmax - xmin, ymax - ymin);
draw_item (cr, FALSE);
}
static void
d_paint_rectangle (GfigObject *obj)
{
DobjPoints *first_pnt;
DobjPoints *second_pnt;
gdouble dpnts[4];
g_assert (obj != NULL);
/* Drawing rectangles is hard .
* 1) select rectangle
* 2) stroke it
*/
first_pnt = obj->points;
if (!first_pnt)
return; /* End-of-line */
second_pnt = first_pnt->next;
if (!second_pnt)
{
g_error ("Internal error - rectangle no second pnt");
}
dpnts[0] = (gdouble) MIN (first_pnt->pnt.x, second_pnt->pnt.x);
dpnts[1] = (gdouble) MIN (first_pnt->pnt.y, second_pnt->pnt.y);
dpnts[2] = (gdouble) MAX (first_pnt->pnt.x, second_pnt->pnt.x);
dpnts[3] = (gdouble) MAX (first_pnt->pnt.y, second_pnt->pnt.y);
/* Scale before drawing */
if (selvals.scaletoimage)
scale_to_original_xy (&dpnts[0], 2);
else
scale_to_xy (&dpnts[0], 2);
if (gfig_context_get_current_style ()->fill_type != FILL_NONE)
{
gimp_context_push ();
gimp_context_set_feather (selopt.feather);
gimp_context_set_feather_radius (selopt.feather_radius, selopt.feather_radius);
gimp_image_select_rectangle (gfig_context->image_id,
selopt.type,
dpnts[0], dpnts[1],
dpnts[2] - dpnts[0],
dpnts[3] - dpnts[1]);
gimp_context_pop ();
paint_layer_fill (dpnts[0], dpnts[1], dpnts[2], dpnts[3]);
gimp_selection_none (gfig_context->image_id);
}
if (obj->style.paint_type == PAINT_BRUSH_TYPE)
{
gdouble line_pnts[] = { dpnts[0], dpnts[1], dpnts[2], dpnts[1],
dpnts[2], dpnts[3], dpnts[0], dpnts[3],
dpnts[0], dpnts[1] };
gfig_paint (selvals.brshtype, gfig_context->drawable_id, 10, line_pnts);
}
}
static GfigObject *
d_copy_rectangle (GfigObject * obj)
{
GfigObject *new_rectangle;
g_assert (obj->type == RECTANGLE);
new_rectangle = d_new_object (RECTANGLE,
obj->points->pnt.x, obj->points->pnt.y);
new_rectangle->points->next = d_copy_dobjpoints (obj->points->next);
return new_rectangle;
}
void
d_rectangle_object_class_init (void)
{
GfigObjectClass *class = &dobj_class[RECTANGLE];
class->type = RECTANGLE;
class->name = "RECTANGLE";
class->drawfunc = d_draw_rectangle;
class->paintfunc = d_paint_rectangle;
class->copyfunc = d_copy_rectangle;
class->update = d_update_rectangle;
}
static void
d_update_rectangle (GdkPoint *pnt)
{
DobjPoints *first_pnt;
DobjPoints *second_pnt;
first_pnt = obj_creating->points;
if (!first_pnt)
return; /* No points */
if ((second_pnt = first_pnt->next))
{
second_pnt->pnt.x = pnt->x;
second_pnt->pnt.y = pnt->y;
}
else
{
second_pnt = new_dobjpoint (pnt->x, pnt->y);
first_pnt->next = second_pnt;
}
}
void
d_rectangle_start (GdkPoint *pnt,
gboolean shift_down)
{
obj_creating = d_new_object (RECTANGLE, pnt->x, pnt->y);
}
void
d_rectangle_end (GdkPoint *pnt,
gboolean shift_down)
{
/* Under contrl point */
if (!obj_creating->points->next)
{
/* No circle created */
free_one_obj (obj_creating);
}
else
{
add_to_all_obj (gfig_context->current_obj, obj_creating);
}
obj_creating = NULL;
}
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