widgets.h

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/*
    This file is part of the Ansel project.
    Copyright (C) 2026 Aurélien PIERRE.
 
    Ansel 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.
 
    Ansel 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 Ansel.  If not, see <http://www.gnu.org/licenses/>.
*/
 
#ifndef DT_IOP_DRAWLAYER_WIDGETS_H
#define DT_IOP_DRAWLAYER_WIDGETS_H
 
#include <gtk/gtk.h>
 
#define DT_DRAWLAYER_COLOR_PICKER_HEIGHT 184
#define DT_DRAWLAYER_COLOR_HISTORY_COUNT 10
#define DT_DRAWLAYER_COLOR_HISTORY_COLS 5
#define DT_DRAWLAYER_COLOR_HISTORY_ROWS 2
#define DT_DRAWLAYER_COLOR_HISTORY_HEIGHT 44
 
typedef struct dt_drawlayer_widgets_t dt_drawlayer_widgets_t;
 
dt_drawlayer_widgets_t *dt_drawlayer_widgets_init(void);
void dt_drawlayer_widgets_cleanup(dt_drawlayer_widgets_t **widgets);
 
void dt_drawlayer_widgets_set_display_color(dt_drawlayer_widgets_t *widgets, const float display_rgb[3]);
gboolean dt_drawlayer_widgets_get_display_color(const dt_drawlayer_widgets_t *widgets, float display_rgb[3]);
 
void dt_drawlayer_widgets_set_color_history(dt_drawlayer_widgets_t *widgets,
                                            const float history[DT_DRAWLAYER_COLOR_HISTORY_COUNT][3],
                                            const gboolean valid[DT_DRAWLAYER_COLOR_HISTORY_COUNT]);
void dt_drawlayer_widgets_get_color_history(const dt_drawlayer_widgets_t *widgets,
                                            float history[DT_DRAWLAYER_COLOR_HISTORY_COUNT][3],
                                            gboolean valid[DT_DRAWLAYER_COLOR_HISTORY_COUNT]);
gboolean dt_drawlayer_widgets_push_color_history(dt_drawlayer_widgets_t *widgets, const float display_rgb[3]);
 
gboolean dt_drawlayer_widgets_update_from_picker_position(dt_drawlayer_widgets_t *widgets, GtkWidget *widget,
                                                          float x, float y, float display_rgb[3]);
gboolean dt_drawlayer_widgets_finish_picker_drag(dt_drawlayer_widgets_t *widgets, float display_rgb[3]);
gboolean dt_drawlayer_widgets_is_picker_dragging(const dt_drawlayer_widgets_t *widgets);
 
gboolean dt_drawlayer_widgets_pick_history_color(const dt_drawlayer_widgets_t *widgets, GtkWidget *widget,
                                                 float x, float y, float display_rgb[3]);
 
gboolean dt_drawlayer_widgets_draw_picker(dt_drawlayer_widgets_t *widgets, GtkWidget *widget, cairo_t *cr,
                                          double pixels_per_dip);
gboolean dt_drawlayer_widgets_draw_swatch(const dt_drawlayer_widgets_t *widgets, GtkWidget *widget, cairo_t *cr);
 
void dt_drawlayer_widgets_set_brush_profile_preview(dt_drawlayer_widgets_t *widgets,
                                                    float opacity,
                                                    float hardness,
                                                    float sprinkles,
                                                    float sprinkle_size,
                                                    float sprinkle_coarseness,
                                                    int selected_shape);
int dt_drawlayer_widgets_get_brush_profile_selection(const dt_drawlayer_widgets_t *widgets);
gboolean dt_drawlayer_widgets_draw_brush_profiles(dt_drawlayer_widgets_t *widgets, GtkWidget *widget,
                                                  cairo_t *cr, double pixels_per_dip);
gboolean dt_drawlayer_widgets_pick_brush_profile(dt_drawlayer_widgets_t *widgets, GtkWidget *widget,
                                                 float x, float y, int *shape);
#endif // DT_IOP_DRAWLAYER_WIDGETS_H