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Diffstat (limited to 'frontend/xsane-preview.h')
| -rw-r--r-- | frontend/xsane-preview.h | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/frontend/xsane-preview.h b/frontend/xsane-preview.h new file mode 100644 index 0000000..fd452ee --- /dev/null +++ b/frontend/xsane-preview.h @@ -0,0 +1,178 @@ +/* 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 */ |