115 lines
3.7 KiB
C
115 lines
3.7 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* pikaviewrenderervectors.c
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* Copyright (C) 2003 Michael Natterer <mitch@gimp.org>
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* Simon Budig <simon@gimp.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include "libpikamath/pikamath.h"
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#include "libpikawidgets/pikawidgets.h"
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#include "widgets-types.h"
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#include "core/pikaimage.h"
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#include "core/pikaitem.h"
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#include "vectors/pikastroke.h"
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#include "vectors/pikavectors.h"
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#include "pikaviewrenderervectors.h"
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static void pika_view_renderer_vectors_draw (PikaViewRenderer *renderer,
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GtkWidget *widget,
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cairo_t *cr,
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gint available_width,
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gint available_height);
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G_DEFINE_TYPE (PikaViewRendererVectors, pika_view_renderer_vectors,
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PIKA_TYPE_VIEW_RENDERER)
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#define parent_class pika_view_renderer_vectors_parent_class
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static void
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pika_view_renderer_vectors_class_init (PikaViewRendererVectorsClass *klass)
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{
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PikaViewRendererClass *renderer_class = PIKA_VIEW_RENDERER_CLASS (klass);
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renderer_class->draw = pika_view_renderer_vectors_draw;
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}
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static void
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pika_view_renderer_vectors_init (PikaViewRendererVectors *renderer)
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{
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}
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static void
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pika_view_renderer_vectors_draw (PikaViewRenderer *renderer,
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GtkWidget *widget,
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cairo_t *cr,
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gint available_width,
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gint available_height)
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{
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PikaVectors *vectors = PIKA_VECTORS (renderer->viewable);
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const PikaBezierDesc *desc;
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cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
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cairo_translate (cr,
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(available_width - renderer->width) / 2,
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(available_height - renderer->height) / 2);
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cairo_rectangle (cr, 0, 0, renderer->width, renderer->height);
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cairo_clip_preserve (cr);
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cairo_fill (cr);
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desc = pika_vectors_get_bezier (vectors);
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if (desc)
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{
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gdouble xscale;
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gdouble yscale;
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xscale = ((gdouble) renderer->width /
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(gdouble) pika_item_get_width (PIKA_ITEM (vectors)));
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yscale = ((gdouble) renderer->height /
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(gdouble) pika_item_get_height (PIKA_ITEM (vectors)));
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cairo_scale (cr, xscale, yscale);
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/* determine line width */
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xscale = yscale = 0.5;
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cairo_device_to_user_distance (cr, &xscale, &yscale);
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cairo_set_line_width (cr, MAX (xscale, yscale));
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cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
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cairo_append_path (cr, (cairo_path_t *) desc);
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cairo_stroke (cr);
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}
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}
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