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Diffstat (limited to 'src/xsane-preview.h')
| -rw-r--r-- | src/xsane-preview.h | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/src/xsane-preview.h b/src/xsane-preview.h new file mode 100644 index 0000000..ba1321c --- /dev/null +++ b/src/xsane-preview.h @@ -0,0 +1,202 @@ +/* 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 */ |