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gimp/app/gradient_header.h

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __GRADIENT_HEADER_H__
#define __GRADIENT_HEADER_H__
#include <gtk/gtk.h>
#define GRAD_LIST_WIDTH 300
#define GRAD_LIST_HEIGHT 80
#define GRAD_SCROLLBAR_STEP_SIZE 0.05
#define GRAD_SCROLLBAR_PAGE_SIZE 0.75
#define GRAD_CLOSE_BUTTON_WIDTH 45
#define GRAD_PREVIEW_WIDTH 600
#define GRAD_PREVIEW_HEIGHT 64
#define GRAD_CONTROL_HEIGHT 10
#define GRAD_CHECK_SIZE 8
#define GRAD_CHECK_SIZE_SM 4
#define GRAD_CHECK_DARK (1.0 / 3.0)
#define GRAD_CHECK_LIGHT (2.0 / 3.0)
#define GRAD_COLOR_BOX_WIDTH 24
#define GRAD_COLOR_BOX_HEIGHT 16
#define GRAD_NUM_COLORS 10
#define GRAD_MOVE_TIME 150 /* ms between mouse click and detection of movement in gradient control */
#define GRAD_PREVIEW_EVENT_MASK (GDK_EXPOSURE_MASK | GDK_LEAVE_NOTIFY_MASK | \
GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | \
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK)
#define GRAD_CONTROL_EVENT_MASK (GDK_EXPOSURE_MASK | \
GDK_LEAVE_NOTIFY_MASK | \
GDK_POINTER_MOTION_MASK | \
GDK_POINTER_MOTION_HINT_MASK | \
GDK_BUTTON_PRESS_MASK | \
GDK_BUTTON_RELEASE_MASK | \
GDK_BUTTON1_MOTION_MASK)
#define GRAD_UPDATE_PREVIEW 0x0001
#define GRAD_UPDATE_CONTROL 0x0002
#define GRAD_RESET_CONTROL 0X0004
/***** Types *****/
/* Gradient segment type */
typedef enum {
GRAD_LINEAR = 0,
GRAD_CURVED,
GRAD_SINE,
GRAD_SPHERE_INCREASING,
GRAD_SPHERE_DECREASING
} grad_type_t;
typedef enum {
GRAD_RGB = 0, /* normal RGB */
GRAD_HSV_CCW, /* counterclockwise hue */
GRAD_HSV_CW /* clockwise hue */
} grad_color_t;
typedef struct _grad_segment_t {
double left, middle, right; /* Left pos, midpoint, right pos */
double r0, g0, b0, a0; /* Left color */
double r1, g1, b1, a1; /* Right color */
grad_type_t type; /* Segment's blending function */
grad_color_t color; /* Segment's coloring type */
struct _grad_segment_t *prev, *next; /* For linked list of segments */
} grad_segment_t;
/* Complete gradient type */
typedef struct _gradient_t {
char *name;
grad_segment_t *segments;
grad_segment_t *last_visited;
int dirty;
char *filename;
GdkPixmap *pixmap;
} gradient_t;
/* Gradient editor type */
typedef enum {
GRAD_DRAG_NONE = 0,
GRAD_DRAG_LEFT,
GRAD_DRAG_MIDDLE,
GRAD_DRAG_ALL
} control_drag_mode_t;
typedef struct {
GtkWidget *shell;
GdkGC *gc;
GtkWidget *hint_label;
GtkWidget *clist;
GtkWidget *scrollbar;
GtkWidget *preview;
GtkWidget *control;
/* Zoom and scrollbar */
unsigned int zoom_factor;
GtkObject *scroll_data;
/* Instant update */
int instant_update;
/* Gradient preview */
guchar *preview_rows[2]; /* For caching redraw info */
gint preview_last_x;
int preview_button_down;
/* Gradient control */
GdkPixmap *control_pixmap;
grad_segment_t *control_drag_segment; /* Segment which is being dragged */
grad_segment_t *control_sel_l; /* Left segment of selection */
grad_segment_t *control_sel_r; /* Right segment of selection */
control_drag_mode_t control_drag_mode; /* What is being dragged? */
guint32 control_click_time; /* Time when mouse was pressed */
int control_compress; /* Compressing/expanding handles */
gint control_last_x; /* Last mouse position when dragging */
double control_last_gx; /* Last position (wrt gradient) when dragging */
double control_orig_pos; /* Original click position when dragging */
GtkWidget *control_main_popup; /* Popup menu */
GtkWidget *control_blending_label; /* Blending function label */
GtkWidget *control_coloring_label; /* Coloring type label */
GtkWidget *control_splitm_label; /* Split at midpoint label */
GtkWidget *control_splitu_label; /* Split uniformly label */
GtkWidget *control_delete_menu_item; /* Delete menu item */
GtkWidget *control_delete_label; /* Delete label */
GtkWidget *control_recenter_label; /* Re-center label */
GtkWidget *control_redistribute_label; /* Re-distribute label */
GtkWidget *control_flip_label; /* Flip label */
GtkWidget *control_replicate_label; /* Replicate label */
GtkWidget *control_blend_colors_menu_item; /* Blend colors menu item */
GtkWidget *control_blend_opacity_menu_item; /* Blend opacity menu item */
GtkWidget *control_left_load_popup; /* Left endpoint load menu */
GtkWidget *control_left_save_popup; /* Left endpoint save menu */
GtkWidget *control_right_load_popup; /* Right endpoint load menu */
GtkWidget *control_right_save_popup; /* Right endpoint save menu */
GtkWidget *control_blending_popup; /* Blending function menu */
GtkWidget *control_coloring_popup; /* Coloring type menu */
GtkWidget *control_sel_ops_popup; /* Selection ops menu */
GtkAccelGroup *accel_group;
/* Blending and coloring menus */
GtkWidget *control_blending_items[5 + 1]; /* Add 1 for the "Varies" item */
GtkWidget *control_coloring_items[3 + 1];
/* Split uniformly dialog */
int split_parts;
/* Replicate dialog */
int replicate_times;
/* Saved colors */
struct {
double r, g, b, a;
} saved_colors[GRAD_NUM_COLORS];
GtkWidget *left_load_color_boxes[GRAD_NUM_COLORS + 3];
GtkWidget *left_load_labels[GRAD_NUM_COLORS + 3];
GtkWidget *left_save_color_boxes[GRAD_NUM_COLORS];
GtkWidget *left_save_labels[GRAD_NUM_COLORS];
GtkWidget *right_load_color_boxes[GRAD_NUM_COLORS + 3];
GtkWidget *right_load_labels[GRAD_NUM_COLORS + 3];
GtkWidget *right_save_color_boxes[GRAD_NUM_COLORS];
GtkWidget *right_save_labels[GRAD_NUM_COLORS];
/* Color dialogs */
GtkWidget *left_color_preview;
grad_segment_t *left_saved_segments;
int left_saved_dirty;
GtkWidget *right_color_preview;
grad_segment_t *right_saved_segments;
int right_saved_dirty;
} gradient_editor_t;
/* Selection dialog functions */
void sel_update_dialogs(gint row, gradient_t *grad);
void grad_sel_free_all();
void grad_sel_refill_all();
void grad_sel_rename_all(gint n, gradient_t *grad);
void grad_sel_new_all(gint n, gradient_t *grad);
void grad_sel_copy_all(gint n, gradient_t *grad);
void grad_sel_delete_all(gint n);
void grad_create_gradient_editor_init(gint need_show);
void ed_insert_in_gradients_listbox(GdkGC *, GtkWidget *,gradient_t *grad, int pos, int select);
gint grad_set_grad_to_name(gchar *name);
gint ed_set_list_of_gradients(GdkGC *, GtkWidget *,gradient_t *);
/* Varibles used */
extern gradient_t *curr_gradient; /* The active gradient */
extern GSList *gradients_list; /* The list of gradients */
extern gradient_t *grad_default_gradient;
extern gradient_editor_t *g_editor; /* The gradient editor */
extern int num_gradients;
#define G_SAMPLE 40
typedef struct _GradSelect _GradSelect, *GradSelectP;
struct _GradSelect {
GtkWidget *shell;
GtkWidget *frame;
GtkWidget *preview;
GtkWidget *clist;
gchar *callback_name;
gradient_t *grad;
gint sample_size;
GdkColor black;
GdkGC *gc;
};
GradSelectP gsel_new_selection(gchar * title, gchar * initial_gradient);
void grad_select_free (GradSelectP gsp);
extern GSList *grad_active_dialogs; /* List of active dialogs */
extern GradSelectP gradient_select_dialog; /* The main selection dialog */
#endif /* __GRADIENT_HEADER_H__ */
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