463 lines
14 KiB
C
463 lines
14 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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* pikacanvas-style.c
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* Copyright (C) 2010 Michael Natterer <mitch@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 "libpikacolor/pikacolor.h"
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#include "libpikawidgets/pikawidgets.h"
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#include "display-types.h"
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#include "core/pika-cairo.h"
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#include "core/pikagrid.h"
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#include "core/pikalayer.h"
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#include "pikacanvas-style.h"
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/* Styles for common and custom guides. */
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static const PikaRGB guide_normal_fg = { 0.0, 0.0, 0.0, 1.0 };
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static const PikaRGB guide_normal_bg = { 0.0, 0.8, 1.0, 1.0 };
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static const PikaRGB guide_active_fg = { 0.0, 0.0, 0.0, 1.0 };
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static const PikaRGB guide_active_bg = { 1.0, 0.0, 0.0, 1.0 };
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static const PikaRGB guide_mirror_normal_fg = { 1.0, 1.0, 1.0, 1.0 };
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static const PikaRGB guide_mirror_normal_bg = { 0.0, 1.0, 0.0, 1.0 };
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static const PikaRGB guide_mirror_active_fg = { 0.0, 1.0, 0.0, 1.0 };
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static const PikaRGB guide_mirror_active_bg = { 1.0, 0.0, 0.0, 1.0 };
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static const PikaRGB guide_mandala_normal_fg = { 1.0, 1.0, 1.0, 1.0 };
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static const PikaRGB guide_mandala_normal_bg = { 0.0, 1.0, 1.0, 1.0 };
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static const PikaRGB guide_mandala_active_fg = { 0.0, 1.0, 1.0, 1.0 };
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static const PikaRGB guide_mandala_active_bg = { 1.0, 0.0, 0.0, 1.0 };
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static const PikaRGB guide_split_normal_fg = { 1.0, 1.0, 1.0, 1.0 };
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static const PikaRGB guide_split_normal_bg = { 1.0, 0.0, 1.0, 1.0 };
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static const PikaRGB guide_split_active_fg = { 1.0, 0.0, 1.0, 1.0 };
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static const PikaRGB guide_split_active_bg = { 1.0, 0.0, 0.0, 1.0 };
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/* Styles for other canvas items. */
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static const PikaRGB sample_point_normal = { 0.0, 0.8, 1.0, 1.0 };
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static const PikaRGB sample_point_active = { 1.0, 0.0, 0.0, 1.0 };
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static const PikaRGB layer_fg = { 0.0, 0.0, 0.0, 1.0 };
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static const PikaRGB layer_bg = { 1.0, 1.0, 0.0, 1.0 };
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static const PikaRGB layer_group_fg = { 0.0, 0.0, 0.0, 1.0 };
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static const PikaRGB layer_group_bg = { 0.0, 1.0, 1.0, 1.0 };
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static const PikaRGB layer_mask_fg = { 0.0, 0.0, 0.0, 1.0 };
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static const PikaRGB layer_mask_bg = { 0.0, 1.0, 0.0, 1.0 };
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static const PikaRGB canvas_fg = { 0.0, 0.0, 0.0, 1.0 };
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static const PikaRGB canvas_bg = { 1.0, 0.5, 0.0, 1.0 };
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static const PikaRGB selection_out_fg = { 1.0, 1.0, 1.0, 1.0 };
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static const PikaRGB selection_out_bg = { 0.5, 0.5, 0.5, 1.0 };
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static const PikaRGB selection_in_fg = { 0.0, 0.0, 0.0, 1.0 };
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static const PikaRGB selection_in_bg = { 1.0, 1.0, 1.0, 1.0 };
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static const PikaRGB vectors_normal_bg = { 1.0, 1.0, 1.0, 0.6 };
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static const PikaRGB vectors_normal_fg = { 0.0, 0.0, 1.0, 0.8 };
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static const PikaRGB vectors_active_bg = { 1.0, 1.0, 1.0, 0.6 };
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static const PikaRGB vectors_active_fg = { 1.0, 0.0, 0.0, 0.8 };
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static const PikaRGB outline_bg = { 1.0, 1.0, 1.0, 0.6 };
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static const PikaRGB outline_fg = { 0.0, 0.0, 0.0, 0.8 };
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static const PikaRGB passe_partout = { 0.0, 0.0, 0.0, 1.0 };
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static const PikaRGB tool_bg = { 0.0, 0.0, 0.0, 0.4 };
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static const PikaRGB tool_fg = { 1.0, 1.0, 1.0, 0.8 };
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static const PikaRGB tool_fg_highlight = { 1.0, 0.8, 0.2, 0.8 };
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/* public functions */
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void
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pika_canvas_set_guide_style (GtkWidget *canvas,
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cairo_t *cr,
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PikaGuideStyle style,
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gboolean active,
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gdouble offset_x,
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gdouble offset_y)
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{
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cairo_pattern_t *pattern;
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PikaRGB normal_fg;
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PikaRGB normal_bg;
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PikaRGB active_fg;
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PikaRGB active_bg;
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gdouble line_width;
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g_return_if_fail (GTK_IS_WIDGET (canvas));
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g_return_if_fail (cr != NULL);
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switch (style)
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{
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case PIKA_GUIDE_STYLE_NORMAL:
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normal_fg = guide_normal_fg;
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normal_bg = guide_normal_bg;
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active_fg = guide_active_fg;
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active_bg = guide_active_bg;
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line_width = 1.0;
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break;
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case PIKA_GUIDE_STYLE_MIRROR:
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normal_fg = guide_mirror_normal_fg;
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normal_bg = guide_mirror_normal_bg;
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active_fg = guide_mirror_active_fg;
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active_bg = guide_mirror_active_bg;
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line_width = 1.0;
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break;
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case PIKA_GUIDE_STYLE_MANDALA:
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normal_fg = guide_mandala_normal_fg;
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normal_bg = guide_mandala_normal_bg;
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active_fg = guide_mandala_active_fg;
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active_bg = guide_mandala_active_bg;
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line_width = 1.0;
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break;
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case PIKA_GUIDE_STYLE_SPLIT_VIEW:
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normal_fg = guide_split_normal_fg;
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normal_bg = guide_split_normal_bg;
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active_fg = guide_split_active_fg;
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active_bg = guide_split_active_bg;
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line_width = 1.0;
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break;
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default: /* PIKA_GUIDE_STYLE_NONE */
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/* This should not happen. */
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g_return_if_reached ();
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}
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cairo_set_line_width (cr, line_width);
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if (active)
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pattern = pika_cairo_pattern_create_stipple (&active_fg, &active_bg, 0,
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offset_x, offset_y);
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else
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pattern = pika_cairo_pattern_create_stipple (&normal_fg, &normal_bg, 0,
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offset_x, offset_y);
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cairo_set_source (cr, pattern);
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cairo_pattern_destroy (pattern);
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}
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void
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pika_canvas_set_sample_point_style (GtkWidget *canvas,
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cairo_t *cr,
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gboolean active)
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{
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g_return_if_fail (GTK_IS_WIDGET (canvas));
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g_return_if_fail (cr != NULL);
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cairo_set_line_width (cr, 1.0);
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if (active)
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pika_cairo_set_source_rgb (cr, &sample_point_active);
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else
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pika_cairo_set_source_rgb (cr, &sample_point_normal);
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}
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void
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pika_canvas_set_grid_style (GtkWidget *canvas,
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cairo_t *cr,
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PikaGrid *grid,
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gdouble offset_x,
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gdouble offset_y)
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{
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PikaRGB fg;
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PikaRGB bg;
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g_return_if_fail (GTK_IS_WIDGET (canvas));
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g_return_if_fail (cr != NULL);
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g_return_if_fail (PIKA_IS_GRID (grid));
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cairo_set_line_width (cr, 1.0);
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pika_grid_get_fgcolor (grid, &fg);
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switch (pika_grid_get_style (grid))
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{
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cairo_pattern_t *pattern;
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case PIKA_GRID_ON_OFF_DASH:
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case PIKA_GRID_DOUBLE_DASH:
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if (grid->style == PIKA_GRID_DOUBLE_DASH)
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{
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pika_grid_get_bgcolor (grid, &bg);
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pattern = pika_cairo_pattern_create_stipple (&fg, &bg, 0,
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offset_x, offset_y);
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}
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else
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{
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pika_rgba_set (&bg, 0.0, 0.0, 0.0, 0.0);
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pattern = pika_cairo_pattern_create_stipple (&fg, &bg, 0,
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offset_x, offset_y);
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}
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cairo_set_source (cr, pattern);
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cairo_pattern_destroy (pattern);
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break;
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case PIKA_GRID_DOTS:
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case PIKA_GRID_INTERSECTIONS:
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case PIKA_GRID_SOLID:
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pika_cairo_set_source_rgb (cr, &fg);
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break;
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}
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}
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void
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pika_canvas_set_pen_style (GtkWidget *canvas,
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cairo_t *cr,
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const PikaRGB *color,
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gint width)
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{
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g_return_if_fail (GTK_IS_WIDGET (canvas));
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g_return_if_fail (cr != NULL);
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g_return_if_fail (color != NULL);
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cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
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cairo_set_line_width (cr, width);
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cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
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cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
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pika_cairo_set_source_rgb (cr, color);
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}
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void
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pika_canvas_set_layer_style (GtkWidget *canvas,
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cairo_t *cr,
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PikaLayer *layer,
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gdouble offset_x,
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gdouble offset_y)
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{
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cairo_pattern_t *pattern;
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g_return_if_fail (GTK_IS_WIDGET (canvas));
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g_return_if_fail (cr != NULL);
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g_return_if_fail (PIKA_IS_LAYER (layer));
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cairo_set_line_width (cr, 1.0);
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cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
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if (pika_layer_get_mask (layer) &&
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pika_layer_get_edit_mask (layer))
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{
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pattern = pika_cairo_pattern_create_stipple (&layer_mask_fg,
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&layer_mask_bg,
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0,
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offset_x, offset_y);
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}
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else if (pika_viewable_get_children (PIKA_VIEWABLE (layer)))
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{
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pattern = pika_cairo_pattern_create_stipple (&layer_group_fg,
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&layer_group_bg,
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0,
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offset_x, offset_y);
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}
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else
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{
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pattern = pika_cairo_pattern_create_stipple (&layer_fg,
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&layer_bg,
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0,
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offset_x, offset_y);
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}
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cairo_set_source (cr, pattern);
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cairo_pattern_destroy (pattern);
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}
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void
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pika_canvas_set_canvas_style (GtkWidget *canvas,
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cairo_t *cr,
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gdouble offset_x,
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gdouble offset_y)
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{
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cairo_pattern_t *pattern;
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g_return_if_fail (GTK_IS_WIDGET (canvas));
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g_return_if_fail (cr != NULL);
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cairo_set_line_width (cr, 1.0);
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cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
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pattern = pika_cairo_pattern_create_stipple (&canvas_fg,
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&canvas_bg,
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0,
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offset_x, offset_y);
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cairo_set_source (cr, pattern);
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cairo_pattern_destroy (pattern);
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}
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void
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pika_canvas_set_selection_out_style (GtkWidget *canvas,
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cairo_t *cr,
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gdouble offset_x,
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gdouble offset_y)
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{
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cairo_pattern_t *pattern;
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g_return_if_fail (GTK_IS_WIDGET (canvas));
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g_return_if_fail (cr != NULL);
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cairo_set_line_width (cr, 1.0);
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cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
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pattern = pika_cairo_pattern_create_stipple (&selection_out_fg,
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&selection_out_bg,
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0,
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offset_x, offset_y);
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cairo_set_source (cr, pattern);
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cairo_pattern_destroy (pattern);
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}
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void
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pika_canvas_set_selection_in_style (GtkWidget *canvas,
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cairo_t *cr,
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gint index,
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gdouble offset_x,
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gdouble offset_y)
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{
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cairo_pattern_t *pattern;
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g_return_if_fail (GTK_IS_WIDGET (canvas));
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g_return_if_fail (cr != NULL);
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cairo_set_line_width (cr, 1.0);
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cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
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pattern = pika_cairo_pattern_create_stipple (&selection_in_fg,
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&selection_in_bg,
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index,
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offset_x, offset_y);
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cairo_set_source (cr, pattern);
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cairo_pattern_destroy (pattern);
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}
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void
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pika_canvas_set_vectors_bg_style (GtkWidget *canvas,
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cairo_t *cr,
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gboolean active)
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{
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g_return_if_fail (GTK_IS_WIDGET (canvas));
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g_return_if_fail (cr != NULL);
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cairo_set_line_width (cr, 3.0);
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if (active)
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pika_cairo_set_source_rgba (cr, &vectors_active_bg);
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else
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pika_cairo_set_source_rgba (cr, &vectors_normal_bg);
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}
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void
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pika_canvas_set_vectors_fg_style (GtkWidget *canvas,
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cairo_t *cr,
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gboolean active)
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{
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g_return_if_fail (GTK_IS_WIDGET (canvas));
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g_return_if_fail (cr != NULL);
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cairo_set_line_width (cr, 1.0);
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if (active)
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pika_cairo_set_source_rgba (cr, &vectors_active_fg);
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else
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pika_cairo_set_source_rgba (cr, &vectors_normal_fg);
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}
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void
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pika_canvas_set_outline_bg_style (GtkWidget *canvas,
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cairo_t *cr)
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{
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g_return_if_fail (GTK_IS_WIDGET (canvas));
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g_return_if_fail (cr != NULL);
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cairo_set_line_width (cr, 1.0);
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pika_cairo_set_source_rgba (cr, &outline_bg);
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}
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void
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pika_canvas_set_outline_fg_style (GtkWidget *canvas,
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cairo_t *cr)
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{
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static const double dashes[] = { 4.0, 4.0 };
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g_return_if_fail (GTK_IS_WIDGET (canvas));
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g_return_if_fail (cr != NULL);
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cairo_set_line_width (cr, 1.0);
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pika_cairo_set_source_rgba (cr, &outline_fg);
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cairo_set_dash (cr, dashes, G_N_ELEMENTS (dashes), 0);
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}
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void
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pika_canvas_set_passe_partout_style (GtkWidget *canvas,
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cairo_t *cr)
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{
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g_return_if_fail (GTK_IS_WIDGET (canvas));
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g_return_if_fail (cr != NULL);
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pika_cairo_set_source_rgba (cr, &passe_partout);
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}
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void
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pika_canvas_set_tool_bg_style (GtkWidget *canvas,
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cairo_t *cr)
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{
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g_return_if_fail (GTK_IS_WIDGET (canvas));
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g_return_if_fail (cr != NULL);
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cairo_set_line_width (cr, 3.0);
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cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
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pika_cairo_set_source_rgba (cr, &tool_bg);
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}
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void
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pika_canvas_set_tool_fg_style (GtkWidget *canvas,
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cairo_t *cr,
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gboolean highlight)
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{
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g_return_if_fail (cr != NULL);
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cairo_set_line_width (cr, 1.0);
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cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
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if (highlight)
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pika_cairo_set_source_rgba (cr, &tool_fg_highlight);
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else
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pika_cairo_set_source_rgba (cr, &tool_fg);
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}
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