188 lines
6.6 KiB
C
188 lines
6.6 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) 1995-2002 Spencer Kimball, Peter Mattis, and others
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*
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* pika-gradients.c
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* Copyright (C) 2002 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 <gdk-pixbuf/gdk-pixbuf.h>
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#include <gegl.h>
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#include "core-types.h"
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#include "pika.h"
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#include "pika-gradients.h"
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#include "pikacontext.h"
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#include "pikacontainer.h"
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#include "pikadatafactory.h"
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#include "pikagradient.h"
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#include "pika-intl.h"
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#define CUSTOM_KEY "pika-gradient-custom"
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#define FG_BG_RGB_KEY "pika-gradient-fg-bg-rgb"
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#define FG_BG_HARDEDGE_KEY "pika-gradient-fg-bg-rgb-hardedge"
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#define FG_BG_HSV_CCW_KEY "pika-gradient-fg-bg-hsv-ccw"
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#define FG_BG_HSV_CW_KEY "pika-gradient-fg-bg-hsv-cw"
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#define FG_TRANSPARENT_KEY "pika-gradient-fg-transparent"
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#define FG_TRANSPARENT_HARDEDGE_KEY "pika-gradient-fg-transparent-hardedge"
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/* local function prototypes */
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static PikaGradient * pika_gradients_add_gradient (Pika *pika,
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const gchar *name,
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const gchar *id);
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/* public functions */
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void
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pika_gradients_init (Pika *pika)
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{
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PikaGradient *gradient;
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g_return_if_fail (PIKA_IS_PIKA (pika));
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/* Custom */
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gradient = pika_gradients_add_gradient (pika,
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_("Custom"),
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CUSTOM_KEY);
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g_object_set (gradient,
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"writable", TRUE,
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NULL);
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gradient->segments->left_color_type = PIKA_GRADIENT_COLOR_FOREGROUND;
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gradient->segments->right_color_type = PIKA_GRADIENT_COLOR_BACKGROUND;
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/* FG to BG (RGB) */
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gradient = pika_gradients_add_gradient (pika,
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_("FG to BG (RGB)"),
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FG_BG_RGB_KEY);
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gradient->segments->left_color_type = PIKA_GRADIENT_COLOR_FOREGROUND;
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gradient->segments->right_color_type = PIKA_GRADIENT_COLOR_BACKGROUND;
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pika_context_set_gradient (pika->user_context, gradient);
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/* FG to BG (Hardedge) */
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gradient = pika_gradients_add_gradient (pika,
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_("FG to BG (Hardedge)"),
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FG_BG_HARDEDGE_KEY);
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gradient->segments->left_color_type = PIKA_GRADIENT_COLOR_FOREGROUND;
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gradient->segments->right_color_type = PIKA_GRADIENT_COLOR_BACKGROUND;
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gradient->segments->type = PIKA_GRADIENT_SEGMENT_STEP;
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/* FG to BG (HSV counter-clockwise) */
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gradient = pika_gradients_add_gradient (pika,
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_("FG to BG (HSV counter-clockwise)"),
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FG_BG_HSV_CCW_KEY);
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gradient->segments->left_color_type = PIKA_GRADIENT_COLOR_FOREGROUND;
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gradient->segments->right_color_type = PIKA_GRADIENT_COLOR_BACKGROUND;
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gradient->segments->color = PIKA_GRADIENT_SEGMENT_HSV_CCW;
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/* FG to BG (HSV clockwise hue) */
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gradient = pika_gradients_add_gradient (pika,
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_("FG to BG (HSV clockwise hue)"),
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FG_BG_HSV_CW_KEY);
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gradient->segments->left_color_type = PIKA_GRADIENT_COLOR_FOREGROUND;
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gradient->segments->right_color_type = PIKA_GRADIENT_COLOR_BACKGROUND;
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gradient->segments->color = PIKA_GRADIENT_SEGMENT_HSV_CW;
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/* FG to Transparent */
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gradient = pika_gradients_add_gradient (pika,
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_("FG to Transparent"),
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FG_TRANSPARENT_KEY);
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gradient->segments->left_color_type = PIKA_GRADIENT_COLOR_FOREGROUND;
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gradient->segments->right_color_type = PIKA_GRADIENT_COLOR_FOREGROUND_TRANSPARENT;
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/* FG to Transparent (Hardedge) */
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gradient = pika_gradients_add_gradient (pika,
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_("FG to Transparent (Hardedge)"),
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FG_TRANSPARENT_HARDEDGE_KEY);
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gradient->segments->left_color_type = PIKA_GRADIENT_COLOR_FOREGROUND;
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gradient->segments->right_color_type = PIKA_GRADIENT_COLOR_FOREGROUND_TRANSPARENT;
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gradient->segments->type = PIKA_GRADIENT_SEGMENT_STEP;
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}
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PikaGradient *
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pika_gradients_get_custom (Pika *pika)
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{
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g_return_val_if_fail (PIKA_IS_PIKA (pika), NULL);
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return g_object_get_data (G_OBJECT (pika), CUSTOM_KEY);
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}
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PikaGradient *
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pika_gradients_get_fg_bg_rgb (Pika *pika)
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{
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g_return_val_if_fail (PIKA_IS_PIKA (pika), NULL);
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return g_object_get_data (G_OBJECT (pika), FG_BG_RGB_KEY);
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}
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PikaGradient *
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pika_gradients_get_fg_bg_hsv_ccw (Pika *pika)
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{
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g_return_val_if_fail (PIKA_IS_PIKA (pika), NULL);
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return g_object_get_data (G_OBJECT (pika), FG_BG_HSV_CCW_KEY);
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}
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PikaGradient *
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pika_gradients_get_fg_bg_hsv_cw (Pika *pika)
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{
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g_return_val_if_fail (PIKA_IS_PIKA (pika), NULL);
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return g_object_get_data (G_OBJECT (pika), FG_BG_HSV_CW_KEY);
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}
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PikaGradient *
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pika_gradients_get_fg_transparent (Pika *pika)
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{
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g_return_val_if_fail (PIKA_IS_PIKA (pika), NULL);
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return g_object_get_data (G_OBJECT (pika), FG_TRANSPARENT_KEY);
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}
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/* private functions */
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static PikaGradient *
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pika_gradients_add_gradient (Pika *pika,
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const gchar *name,
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const gchar *id)
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{
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PikaGradient *gradient;
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gradient = PIKA_GRADIENT (pika_gradient_new (pika_get_user_context (pika),
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name));
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pika_data_make_internal (PIKA_DATA (gradient), id);
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pika_container_add (pika_data_factory_get_container (pika->gradient_factory),
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PIKA_OBJECT (gradient));
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g_object_unref (gradient);
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g_object_set_data (G_OBJECT (pika), id, gradient);
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return gradient;
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}
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