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-rw-r--r--app/widgets/gimpviewrenderervectors.c111
1 files changed, 111 insertions, 0 deletions
diff --git a/app/widgets/gimpviewrenderervectors.c b/app/widgets/gimpviewrenderervectors.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpviewrenderervectors.c
+ * Copyright (C) 2003 Michael Natterer <mitch@gimp.org>
+ * 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 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 <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpmath/gimpmath.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "widgets-types.h"
+
+#include "core/gimpimage.h"
+#include "core/gimpitem.h"
+
+#include "vectors/gimpstroke.h"
+#include "vectors/gimpvectors.h"
+
+#include "gimpviewrenderervectors.h"
+
+
+static void gimp_view_renderer_vectors_draw (GimpViewRenderer *renderer,
+ GtkWidget *widget,
+ cairo_t *cr,
+ gint available_width,
+ gint available_height);
+
+
+G_DEFINE_TYPE (GimpViewRendererVectors, gimp_view_renderer_vectors,
+ GIMP_TYPE_VIEW_RENDERER)
+
+#define parent_class gimp_view_renderer_vectors_parent_class
+
+
+static void
+gimp_view_renderer_vectors_class_init (GimpViewRendererVectorsClass *klass)
+{
+ GimpViewRendererClass *renderer_class = GIMP_VIEW_RENDERER_CLASS (klass);
+
+ renderer_class->draw = gimp_view_renderer_vectors_draw;
+}
+
+static void
+gimp_view_renderer_vectors_init (GimpViewRendererVectors *renderer)
+{
+}
+
+static void
+gimp_view_renderer_vectors_draw (GimpViewRenderer *renderer,
+ GtkWidget *widget,
+ cairo_t *cr,
+ gint available_width,
+ gint available_height)
+{
+ GtkStyle *style = gtk_widget_get_style (widget);
+ GimpVectors *vectors = GIMP_VECTORS (renderer->viewable);
+ const GimpBezierDesc *desc;
+
+ gdk_cairo_set_source_color (cr, &style->white);
+
+ cairo_translate (cr,
+ (available_width - renderer->width) / 2,
+ (available_height - renderer->height) / 2);
+ cairo_rectangle (cr, 0, 0, renderer->width, renderer->height);
+ cairo_clip_preserve (cr);
+ cairo_fill (cr);
+
+ desc = gimp_vectors_get_bezier (vectors);
+
+ if (desc)
+ {
+ gdouble xscale;
+ gdouble yscale;
+
+ xscale = ((gdouble) renderer->width /
+ (gdouble) gimp_item_get_width (GIMP_ITEM (vectors)));
+ yscale = ((gdouble) renderer->height /
+ (gdouble) gimp_item_get_height (GIMP_ITEM (vectors)));
+
+ cairo_scale (cr, xscale, yscale);
+
+ /* determine line width */
+ xscale = yscale = 0.5;
+ cairo_device_to_user_distance (cr, &xscale, &yscale);
+
+ cairo_set_line_width (cr, MAX (xscale, yscale));
+ gdk_cairo_set_source_color (cr, &style->black);
+
+ cairo_append_path (cr, (cairo_path_t *) desc);
+ cairo_stroke (cr);
+ }
+}