1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
/* xsane -- a graphical (X11, gtk) scanner-oriented SANE frontend
xsane-preview.h
Oliver Rauch <Oliver.Rauch@Wolfsburg.DE>
Copyright (C) 1998-2000 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/config.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;
GSGDialog *dialog; /* the dialog for this preview */
int cursornr;
SANE_Value_Type surface_type;
SANE_Unit surface_unit;
float surface[4]; /* the corners of the selected surface (device coords) */
float old_surface[4]; /* the corners of the old selected surface (device coords) */
float max_scanner_surface[4]; /* the scanner defined corners of the scanner surface (device coords) */
float scanner_surface[4]; /* the user defined corners of the scanner surface (device coords) */
float image_surface[4]; /* the corners of the surface (device coords) of the scanned image */
float aspect; /* the aspect ratio of the scan surface */
float preset_width; /* user selected maximum scan width */
float preset_height; /* user selected maximum scan height */
float maximum_output_width; /* maximum output width (photocopy) */
float maximum_output_height; /* maximum output height (photocopy) */
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;
/* 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;
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 */
u_char *image_data_raw; /* 3 * image_width * image_height bytes */
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 ... */
Batch_selection *batch_selection;
GtkWidget *top; /* top-level widget */
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 *preset_area_option_menu; /* menu for selection of preview area */
}
Preview;
/* ------------------------------------------------------------------------------------------------------ */
extern Preview *preview_new (GSGDialog *dialog); /* Create a new preview based on the info in DIALOG. */
extern void preview_gamma_correction(Preview *p, /* Do gamma correction on preview data */
int gamma_red[], int gamma_green[], int gamma_blue[],
int gamma_red_hist[], int gamma_green_hist[], int 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_histogram(Preview *p, /* calculate histogram */
SANE_Int *count_raw, SANE_Int *count_raw_red, SANE_Int *count_raw_green, SANE_Int *count_raw_blue,
SANE_Int *count, SANE_Int *count_red, SANE_Int *count_green, SANE_Int *count_blue);
extern void preview_area_resize(GtkWidget *widget); /* redraw preview rulers */
void preview_set_maximum_output_size(Preview *p, float width, float height); /* set maximum outut size */
/* ------------------------------------------------------------------------------------------------------ */
#endif /* preview_h */
|
