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/* xsane -- a graphical (X11, gtk) scanner-oriented SANE frontend
xsane-preview.h
Oliver Rauch <Oliver.Rauch@rauch-domain.de>
Copyright (C) 1998-2002 Oliver Rauch
This file is part of the XSANE package.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* ------------------------------------------------------------------------------------------------------ */
#ifndef xsanepreview_h
#define xsanepreview_h
/* ------------------------------------------------------------------------------------------------------ */
#include <sys/types.h>
#include <sane/sane.h>
#define SELECTION_RANGE_IN 4
#define SELECTION_RANGE_OUT 8
#define XSANE_CURSOR_PREVIEW GDK_LEFT_PTR
/* ------------------------------------------------------------------------------------------------------ */
enum
{
MODE_NORMAL,
MODE_PIPETTE_WHITE,
MODE_PIPETTE_GRAY,
MODE_PIPETTE_BLACK
};
/* ------------------------------------------------------------------------------------------------------ */
typedef struct Batch_selection
{
float coordinate[4]; /* batch selection coordinate (device coord) */
struct Batch_selection *next;
} Batch_selection;
typedef struct
{
int active;
float coordinate[4]; /* selection coordinate (device coord) */
} Tselection;
/* ------------------------------------------------------------------------------------------------------ */
typedef struct
{
int mode;
int calibration;
int startimage;
int cursornr;
guint hold_timer;
char *filename[3]; /* filenames for preview level 0,1,2 */
SANE_Value_Type surface_type;
SANE_Unit surface_unit;
float orig_scanner_surface[4];/* the scanner defined corners of the scanner surface (device coords) */
float image_surface[4]; /* the corners of the surface (device coords) of the scanned image */
float max_scanner_surface[4]; /* rotated corners of the scanner surface (window coords) */
float preset_surface[4]; /* the corners of the reduced (by user) surface (window coords) */
float scanner_surface[4]; /* the user defined corners of the scanner surface (window coords) */
float surface[4]; /* the corners of the selected surface (window coords) */
float old_surface[4]; /* the corners of the old selected surface (window coords) */
float aspect; /* the aspect ratio of the scan surface */
float maximum_output_width; /* maximum output width (photocopy) */
float maximum_output_height; /* maximum output height (photocopy) */
int index_xmin, index_xmax, index_ymin, index_ymax; /* index numbers in dependance of p->rotation */
int saved_dpi_valid;
int saved_dpi_x_valid;
int saved_dpi_y_valid;
SANE_Word saved_dpi;
SANE_Word saved_dpi_x;
SANE_Word saved_dpi_y;
int saved_coord_valid[4];
SANE_Word saved_coord[4];
int saved_custom_gamma_valid;
SANE_Word saved_custom_gamma;
int saved_bit_depth_valid;
SANE_Word saved_bit_depth;
int saved_scanmode_valid;
char saved_scanmode[64]; /* I hope that is enough or we will get segaults or strange effects */
/* desired/user-selected preview-window size: */
int preview_width; /* used with for displaying the preview image */
int preview_height; /* used height for displaying the preview image */
int preview_window_width; /* width of the preview window */
int preview_window_height; /* height of the preview window */
u_char *preview_row;
int scanning;
int scan_incomplete;
int invalid;
int preview_colors;
time_t image_last_time_updated;
gint input_tag;
SANE_Parameters params;
int image_offset;
int image_x;
int image_y;
int image_width; /* width of preview image in pixels */
int image_height; /* height of preview image in pixel lines */
int rotation; /* rotation: 0=0, 1=90, 2=180, 3=270 degree, 4-7= rotation + mirror in x direction */
int gamma_functions_interruptable; /* bit that defines if gamma function can be interrupted */
guint16 *image_data_raw; /* 3 * image_width * image_height bytes * 2 */
u_char *image_data_enh; /* 3 * image_width * image_height bytes */
GdkGC *gc_selection;
GdkGC *gc_selection_maximum;
int selection_drag;
int selection_drag_edge;
int selection_xpos;
int selection_ypos;
int selection_xedge;
int selection_yedge;
Tselection selection; /* selected area to scan */
Tselection previous_selection; /* previous ... */
Tselection selection_maximum; /* maximum selection size (photocopy) */
Tselection previous_selection_maximum; /* previous ... */
int show_selection;
Batch_selection *batch_selection;
GtkWidget *top; /* top-level widget */
GtkWidget *unit_label;
GtkWidget *hruler;
GtkWidget *vruler;
GtkWidget *viewport;
GtkWidget *window; /* the preview window */
GtkWidget *start; /* the start button */
GtkWidget *cancel; /* the cancel button */
GtkWidget *button_box; /* hbox for the following buttons */
GtkWidget *pipette_white; /* pipette white button */
GtkWidget *pipette_gray; /* pipette gray button */
GtkWidget *pipette_black; /* pipette black button */
GtkWidget *zoom_not; /* zoom not button */
GtkWidget *zoom_out; /* zoom out button */
GtkWidget *zoom_in; /* zoom in button */
GtkWidget *zoom_undo; /* zoom undo button */
GtkWidget *full_area; /* select full scanarea */
GtkWidget *autoselect; /* autoselect scanarea */
GtkWidget *preset_area_option_menu; /* menu for selection of preview area */
GtkWidget *rotation_option_menu; /* menu for selection of rotation */
GtkWidget *scanning_pixmap; /* pixmap that shows preview is in scanning progress */
GtkWidget *valid_pixmap; /* pixmap that shows preview is valid */
GtkWidget *invalid_pixmap; /* pixmap that shows preview is invalid */
GtkWidget *incomplete_pixmap; /* pixmap that shows preview is incomplete */
}
Preview;
/* ------------------------------------------------------------------------------------------------------ */
extern Preview *preview_new(void); /* Create a new preview based on the info in DIALOG. */
extern void preview_generate_preview_filenames(Preview *p); /* create new preview filenames */
extern void preview_gamma_correction(Preview *p, int gamma_input_bits,
u_char *gamma_red, u_char *gamma_green, u_char *gamma_blue,
u_char *gamma_red_hist, u_char *gamma_green_hist, u_char *gamma_blue_hist,
u_char *medium_gamma_red_hist, u_char *medium_gamma_green_hist, u_char *medium_gamma_blue_hist);
extern void preview_update_surface(Preview *p, int surface_changed); /* params changed: update preview */
extern void preview_scan(Preview *p); /* Acquire a preview image and display it. */
extern void preview_destroy(Preview *p); /* Destroy a preview. */
extern void preview_calculate_raw_histogram(Preview *p, SANE_Int *count_raw, SANE_Int *count_raw_red, SANE_Int *count_raw_green, SANE_Int *count_raw_blue);
extern void preview_calculate_enh_histogram(Preview *p, SANE_Int *count, SANE_Int *count_red, SANE_Int *count_green, SANE_Int *count_blue);
extern void preview_area_resize(Preview *p); /* redraw preview rulers */
extern void preview_set_maximum_output_size(Preview *p, float width, float height); /* set maximum outut size */
extern void preview_select_full_preview_area(Preview *p);
extern void preview_display_valid(Preview *p);
/* ------------------------------------------------------------------------------------------------------ */
#endif /* preview_h */
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