127 lines
5.2 KiB
C
127 lines
5.2 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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* Gradient editor module copyight (C) 1996-1997 Federico Mena Quintero
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* federico@nuclecu.unam.mx
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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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#ifndef __PIKA_GRADIENT_EDITOR_H__
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#define __PIKA_GRADIENT_EDITOR_H__
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#include "pikadataeditor.h"
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#define GRAD_NUM_COLORS 10
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typedef enum
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{
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GRAD_DRAG_NONE = 0,
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GRAD_DRAG_LEFT,
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GRAD_DRAG_MIDDLE,
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GRAD_DRAG_ALL
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} GradientEditorDragMode;
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#define PIKA_TYPE_GRADIENT_EDITOR (pika_gradient_editor_get_type ())
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#define PIKA_GRADIENT_EDITOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), PIKA_TYPE_GRADIENT_EDITOR, PikaGradientEditor))
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#define PIKA_GRADIENT_EDITOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PIKA_TYPE_GRADIENT_EDITOR, PikaGradientEditorClass))
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#define PIKA_IS_GRADIENT_EDITOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), PIKA_TYPE_GRADIENT_EDITOR))
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#define PIKA_IS_GRADIENT_EDITOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PIKA_TYPE_GRADIENT_EDITOR))
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#define PIKA_GRADIENT_EDITOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PIKA_TYPE_GRADIENT_EDITOR, PikaGradientEditorClass))
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typedef struct _PikaGradientEditorClass PikaGradientEditorClass;
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struct _PikaGradientEditor
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{
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PikaDataEditor parent_instance;
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GtkWidget *current_color;
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GtkWidget *hint_label1;
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GtkWidget *hint_label2;
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GtkWidget *hint_label3;
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GtkWidget *hint_label4;
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GtkWidget *scrollbar;
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GtkWidget *control;
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/* Zoom and scrollbar */
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gdouble zoom_factor;
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GtkAdjustment *scroll_data;
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GtkGesture *zoom_gesture;
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gdouble last_zoom_scale;
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/* Gradient view */
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gint view_last_x; /* -1 if mouse has left focus */
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gboolean view_button_down;
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/* Gradient control */
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PikaGradientSegment *control_drag_segment; /* Segment which is being dragged */
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PikaGradientSegment *control_sel_l; /* Left segment of selection */
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PikaGradientSegment *control_sel_r; /* Right segment of selection */
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GradientEditorDragMode control_drag_mode; /* What is being dragged? */
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guint32 control_click_time; /* Time when mouse was pressed */
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gboolean control_compress; /* Compressing/expanding handles */
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gint control_last_x; /* Last mouse position, -1 if out of focus */
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gdouble control_last_gx; /* Last position (wrt gradient) when dragging */
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gdouble control_orig_pos; /* Original click position when dragging */
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PikaGradientBlendColorSpace blend_color_space;
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/* Saved colors */
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PikaRGB saved_colors[GRAD_NUM_COLORS];
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/* Color dialog */
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GtkWidget *color_dialog;
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PikaGradientSegment *saved_segments;
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gboolean saved_dirty;
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};
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struct _PikaGradientEditorClass
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{
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PikaDataEditorClass parent_class;
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};
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GType pika_gradient_editor_get_type (void) G_GNUC_CONST;
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GtkWidget * pika_gradient_editor_new (PikaContext *context,
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PikaMenuFactory *menu_factory);
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void pika_gradient_editor_get_selection (PikaGradientEditor *editor,
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PikaGradient **gradient,
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PikaGradientSegment **left,
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PikaGradientSegment **right);
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void pika_gradient_editor_set_selection (PikaGradientEditor *editor,
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PikaGradientSegment *left,
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PikaGradientSegment *right);
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void pika_gradient_editor_edit_left_color (PikaGradientEditor *editor);
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void pika_gradient_editor_edit_right_color (PikaGradientEditor *editor);
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void pika_gradient_editor_zoom (PikaGradientEditor *editor,
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PikaZoomType zoom_type,
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gdouble delta,
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gdouble zoom_focus_x);
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#endif /* __PIKA_GRADIENT_EDITOR_H__ */
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