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-rw-r--r--app/display/gimpcanvas-style.c458
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diff --git a/app/display/gimpcanvas-style.c b/app/display/gimpcanvas-style.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpcanvas-style.c
+ * Copyright (C) 2010 Michael Natterer <mitch@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 "libgimpcolor/gimpcolor.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "display-types.h"
+
+#include "core/gimp-cairo.h"
+#include "core/gimpgrid.h"
+#include "core/gimplayer.h"
+
+#include "gimpcanvas-style.h"
+
+/* Styles for common and custom guides. */
+static const GimpRGB guide_normal_fg = { 0.0, 0.0, 0.0, 1.0 };
+static const GimpRGB guide_normal_bg = { 0.0, 0.8, 1.0, 1.0 };
+static const GimpRGB guide_active_fg = { 0.0, 0.0, 0.0, 1.0 };
+static const GimpRGB guide_active_bg = { 1.0, 0.0, 0.0, 1.0 };
+
+static const GimpRGB guide_mirror_normal_fg = { 1.0, 1.0, 1.0, 1.0 };
+static const GimpRGB guide_mirror_normal_bg = { 0.0, 1.0, 0.0, 1.0 };
+static const GimpRGB guide_mirror_active_fg = { 0.0, 1.0, 0.0, 1.0 };
+static const GimpRGB guide_mirror_active_bg = { 1.0, 0.0, 0.0, 1.0 };
+
+static const GimpRGB guide_mandala_normal_fg = { 1.0, 1.0, 1.0, 1.0 };
+static const GimpRGB guide_mandala_normal_bg = { 0.0, 1.0, 1.0, 1.0 };
+static const GimpRGB guide_mandala_active_fg = { 0.0, 1.0, 1.0, 1.0 };
+static const GimpRGB guide_mandala_active_bg = { 1.0, 0.0, 0.0, 1.0 };
+
+static const GimpRGB guide_split_normal_fg = { 1.0, 1.0, 1.0, 1.0 };
+static const GimpRGB guide_split_normal_bg = { 1.0, 0.0, 1.0, 1.0 };
+static const GimpRGB guide_split_active_fg = { 1.0, 0.0, 1.0, 1.0 };
+static const GimpRGB guide_split_active_bg = { 1.0, 0.0, 0.0, 1.0 };
+
+/* Styles for other canvas items. */
+static const GimpRGB sample_point_normal = { 0.0, 0.8, 1.0, 1.0 };
+static const GimpRGB sample_point_active = { 1.0, 0.0, 0.0, 1.0 };
+
+static const GimpRGB layer_fg = { 0.0, 0.0, 0.0, 1.0 };
+static const GimpRGB layer_bg = { 1.0, 1.0, 0.0, 1.0 };
+
+static const GimpRGB layer_group_fg = { 0.0, 0.0, 0.0, 1.0 };
+static const GimpRGB layer_group_bg = { 0.0, 1.0, 1.0, 1.0 };
+
+static const GimpRGB layer_mask_fg = { 0.0, 0.0, 0.0, 1.0 };
+static const GimpRGB layer_mask_bg = { 0.0, 1.0, 0.0, 1.0 };
+
+static const GimpRGB canvas_fg = { 0.0, 0.0, 0.0, 1.0 };
+static const GimpRGB canvas_bg = { 1.0, 0.5, 0.0, 1.0 };
+
+static const GimpRGB selection_out_fg = { 1.0, 1.0, 1.0, 1.0 };
+static const GimpRGB selection_out_bg = { 0.5, 0.5, 0.5, 1.0 };
+
+static const GimpRGB selection_in_fg = { 0.0, 0.0, 0.0, 1.0 };
+static const GimpRGB selection_in_bg = { 1.0, 1.0, 1.0, 1.0 };
+
+static const GimpRGB vectors_normal_bg = { 1.0, 1.0, 1.0, 0.6 };
+static const GimpRGB vectors_normal_fg = { 0.0, 0.0, 1.0, 0.8 };
+
+static const GimpRGB vectors_active_bg = { 1.0, 1.0, 1.0, 0.6 };
+static const GimpRGB vectors_active_fg = { 1.0, 0.0, 0.0, 0.8 };
+
+static const GimpRGB outline_bg = { 1.0, 1.0, 1.0, 0.6 };
+static const GimpRGB outline_fg = { 0.0, 0.0, 0.0, 0.8 };
+
+static const GimpRGB passe_partout = { 0.0, 0.0, 0.0, 1.0 };
+
+static const GimpRGB tool_bg = { 0.0, 0.0, 0.0, 0.4 };
+static const GimpRGB tool_fg = { 1.0, 1.0, 1.0, 0.8 };
+static const GimpRGB tool_fg_highlight = { 1.0, 0.8, 0.2, 0.8 };
+
+
+/* public functions */
+
+void
+gimp_canvas_set_guide_style (GtkWidget *canvas,
+ cairo_t *cr,
+ GimpGuideStyle style,
+ gboolean active,
+ gdouble offset_x,
+ gdouble offset_y)
+{
+ cairo_pattern_t *pattern;
+ GimpRGB normal_fg;
+ GimpRGB normal_bg;
+ GimpRGB active_fg;
+ GimpRGB active_bg;
+ gdouble line_width;
+
+ g_return_if_fail (GTK_IS_WIDGET (canvas));
+ g_return_if_fail (cr != NULL);
+
+ switch (style)
+ {
+ case GIMP_GUIDE_STYLE_NORMAL:
+ normal_fg = guide_normal_fg;
+ normal_bg = guide_normal_bg;
+ active_fg = guide_active_fg;
+ active_bg = guide_active_bg;
+ line_width = 1.0;
+ break;
+
+ case GIMP_GUIDE_STYLE_MIRROR:
+ normal_fg = guide_mirror_normal_fg;
+ normal_bg = guide_mirror_normal_bg;
+ active_fg = guide_mirror_active_fg;
+ active_bg = guide_mirror_active_bg;
+ line_width = 1.0;
+ break;
+
+ case GIMP_GUIDE_STYLE_MANDALA:
+ normal_fg = guide_mandala_normal_fg;
+ normal_bg = guide_mandala_normal_bg;
+ active_fg = guide_mandala_active_fg;
+ active_bg = guide_mandala_active_bg;
+ line_width = 1.0;
+ break;
+
+ case GIMP_GUIDE_STYLE_SPLIT_VIEW:
+ normal_fg = guide_split_normal_fg;
+ normal_bg = guide_split_normal_bg;
+ active_fg = guide_split_active_fg;
+ active_bg = guide_split_active_bg;
+ line_width = 1.0;
+ break;
+
+ default: /* GIMP_GUIDE_STYLE_NONE */
+ /* This should not happen. */
+ g_return_if_reached ();
+ }
+
+ cairo_set_line_width (cr, line_width);
+
+ if (active)
+ pattern = gimp_cairo_pattern_create_stipple (&active_fg, &active_bg, 0,
+ offset_x, offset_y);
+ else
+ pattern = gimp_cairo_pattern_create_stipple (&normal_fg, &normal_bg, 0,
+ offset_x, offset_y);
+
+ cairo_set_source (cr, pattern);
+ cairo_pattern_destroy (pattern);
+}
+
+void
+gimp_canvas_set_sample_point_style (GtkWidget *canvas,
+ cairo_t *cr,
+ gboolean active)
+{
+ g_return_if_fail (GTK_IS_WIDGET (canvas));
+ g_return_if_fail (cr != NULL);
+
+ cairo_set_line_width (cr, 1.0);
+
+ if (active)
+ gimp_cairo_set_source_rgb (cr, &sample_point_active);
+ else
+ gimp_cairo_set_source_rgb (cr, &sample_point_normal);
+}
+
+void
+gimp_canvas_set_grid_style (GtkWidget *canvas,
+ cairo_t *cr,
+ GimpGrid *grid,
+ gdouble offset_x,
+ gdouble offset_y)
+{
+ GimpRGB fg;
+ GimpRGB bg;
+
+ g_return_if_fail (GTK_IS_WIDGET (canvas));
+ g_return_if_fail (cr != NULL);
+ g_return_if_fail (GIMP_IS_GRID (grid));
+
+ cairo_set_line_width (cr, 1.0);
+
+ gimp_grid_get_fgcolor (grid, &fg);
+
+ switch (gimp_grid_get_style (grid))
+ {
+ cairo_pattern_t *pattern;
+
+ case GIMP_GRID_ON_OFF_DASH:
+ case GIMP_GRID_DOUBLE_DASH:
+ if (grid->style == GIMP_GRID_DOUBLE_DASH)
+ {
+ gimp_grid_get_bgcolor (grid, &bg);
+
+ pattern = gimp_cairo_pattern_create_stipple (&fg, &bg, 0,
+ offset_x, offset_y);
+ }
+ else
+ {
+ gimp_rgba_set (&bg, 0.0, 0.0, 0.0, 0.0);
+
+ pattern = gimp_cairo_pattern_create_stipple (&fg, &bg, 0,
+ offset_x, offset_y);
+ }
+
+ cairo_set_source (cr, pattern);
+ cairo_pattern_destroy (pattern);
+ break;
+
+ case GIMP_GRID_DOTS:
+ case GIMP_GRID_INTERSECTIONS:
+ case GIMP_GRID_SOLID:
+ gimp_cairo_set_source_rgb (cr, &fg);
+ break;
+ }
+}
+
+void
+gimp_canvas_set_pen_style (GtkWidget *canvas,
+ cairo_t *cr,
+ const GimpRGB *color,
+ gint width)
+{
+ g_return_if_fail (GTK_IS_WIDGET (canvas));
+ g_return_if_fail (cr != NULL);
+ g_return_if_fail (color != NULL);
+
+ cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
+ cairo_set_line_width (cr, width);
+ cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
+ cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
+
+ gimp_cairo_set_source_rgb (cr, color);
+}
+
+void
+gimp_canvas_set_layer_style (GtkWidget *canvas,
+ cairo_t *cr,
+ GimpLayer *layer,
+ gdouble offset_x,
+ gdouble offset_y)
+{
+ cairo_pattern_t *pattern;
+
+ g_return_if_fail (GTK_IS_WIDGET (canvas));
+ g_return_if_fail (cr != NULL);
+ g_return_if_fail (GIMP_IS_LAYER (layer));
+
+ cairo_set_line_width (cr, 1.0);
+ cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
+
+ if (gimp_layer_get_mask (layer) &&
+ gimp_layer_get_edit_mask (layer))
+ {
+ pattern = gimp_cairo_pattern_create_stipple (&layer_mask_fg,
+ &layer_mask_bg,
+ 0,
+ offset_x, offset_y);
+ }
+ else if (gimp_viewable_get_children (GIMP_VIEWABLE (layer)))
+ {
+ pattern = gimp_cairo_pattern_create_stipple (&layer_group_fg,
+ &layer_group_bg,
+ 0,
+ offset_x, offset_y);
+ }
+ else
+ {
+ pattern = gimp_cairo_pattern_create_stipple (&layer_fg,
+ &layer_bg,
+ 0,
+ offset_x, offset_y);
+ }
+
+ cairo_set_source (cr, pattern);
+ cairo_pattern_destroy (pattern);
+}
+
+void
+gimp_canvas_set_canvas_style (GtkWidget *canvas,
+ cairo_t *cr,
+ gdouble offset_x,
+ gdouble offset_y)
+{
+ cairo_pattern_t *pattern;
+
+ g_return_if_fail (GTK_IS_WIDGET (canvas));
+ g_return_if_fail (cr != NULL);
+
+ cairo_set_line_width (cr, 1.0);
+ cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
+
+ pattern = gimp_cairo_pattern_create_stipple (&canvas_fg,
+ &canvas_bg,
+ 0,
+ offset_x, offset_y);
+
+ cairo_set_source (cr, pattern);
+ cairo_pattern_destroy (pattern);
+}
+
+void
+gimp_canvas_set_selection_out_style (GtkWidget *canvas,
+ cairo_t *cr,
+ gdouble offset_x,
+ gdouble offset_y)
+{
+ cairo_pattern_t *pattern;
+
+ g_return_if_fail (GTK_IS_WIDGET (canvas));
+ g_return_if_fail (cr != NULL);
+
+ cairo_set_line_width (cr, 1.0);
+ cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
+
+ pattern = gimp_cairo_pattern_create_stipple (&selection_out_fg,
+ &selection_out_bg,
+ 0,
+ offset_x, offset_y);
+ cairo_set_source (cr, pattern);
+ cairo_pattern_destroy (pattern);
+}
+
+void
+gimp_canvas_set_selection_in_style (GtkWidget *canvas,
+ cairo_t *cr,
+ gint index,
+ gdouble offset_x,
+ gdouble offset_y)
+{
+ cairo_pattern_t *pattern;
+
+ g_return_if_fail (GTK_IS_WIDGET (canvas));
+ g_return_if_fail (cr != NULL);
+
+ cairo_set_line_width (cr, 1.0);
+ cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
+
+ pattern = gimp_cairo_pattern_create_stipple (&selection_in_fg,
+ &selection_in_bg,
+ index,
+ offset_x, offset_y);
+ cairo_set_source (cr, pattern);
+ cairo_pattern_destroy (pattern);
+}
+
+void
+gimp_canvas_set_vectors_bg_style (GtkWidget *canvas,
+ cairo_t *cr,
+ gboolean active)
+{
+ g_return_if_fail (GTK_IS_WIDGET (canvas));
+ g_return_if_fail (cr != NULL);
+
+ cairo_set_line_width (cr, 3.0);
+
+ if (active)
+ gimp_cairo_set_source_rgba (cr, &vectors_active_bg);
+ else
+ gimp_cairo_set_source_rgba (cr, &vectors_normal_bg);
+}
+
+void
+gimp_canvas_set_vectors_fg_style (GtkWidget *canvas,
+ cairo_t *cr,
+ gboolean active)
+{
+ g_return_if_fail (GTK_IS_WIDGET (canvas));
+ g_return_if_fail (cr != NULL);
+
+ cairo_set_line_width (cr, 1.0);
+
+ if (active)
+ gimp_cairo_set_source_rgba (cr, &vectors_active_fg);
+ else
+ gimp_cairo_set_source_rgba (cr, &vectors_normal_fg);
+}
+
+void
+gimp_canvas_set_outline_bg_style (GtkWidget *canvas,
+ cairo_t *cr)
+{
+ g_return_if_fail (GTK_IS_WIDGET (canvas));
+ g_return_if_fail (cr != NULL);
+
+ cairo_set_line_width (cr, 1.0);
+ gimp_cairo_set_source_rgba (cr, &outline_bg);
+}
+
+void
+gimp_canvas_set_outline_fg_style (GtkWidget *canvas,
+ cairo_t *cr)
+{
+ static const double dashes[] = { 4.0, 4.0 };
+
+ g_return_if_fail (GTK_IS_WIDGET (canvas));
+ g_return_if_fail (cr != NULL);
+
+ cairo_set_line_width (cr, 1.0);
+ gimp_cairo_set_source_rgba (cr, &outline_fg);
+ cairo_set_dash (cr, dashes, G_N_ELEMENTS (dashes), 0);
+}
+
+void
+gimp_canvas_set_passe_partout_style (GtkWidget *canvas,
+ cairo_t *cr)
+{
+ g_return_if_fail (GTK_IS_WIDGET (canvas));
+ g_return_if_fail (cr != NULL);
+
+ gimp_cairo_set_source_rgba (cr, &passe_partout);
+}
+
+void
+gimp_canvas_set_tool_bg_style (GtkWidget *canvas,
+ cairo_t *cr)
+{
+ g_return_if_fail (GTK_IS_WIDGET (canvas));
+ g_return_if_fail (cr != NULL);
+
+ cairo_set_line_width (cr, 3.0);
+ cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
+
+ gimp_cairo_set_source_rgba (cr, &tool_bg);
+}
+
+void
+gimp_canvas_set_tool_fg_style (GtkWidget *canvas,
+ cairo_t *cr,
+ gboolean highlight)
+{
+ g_return_if_fail (cr != NULL);
+
+ cairo_set_line_width (cr, 1.0);
+ cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
+
+ if (highlight)
+ gimp_cairo_set_source_rgba (cr, &tool_fg_highlight);
+ else
+ gimp_cairo_set_source_rgba (cr, &tool_fg);
+}
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