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authorMattia Rizzolo <mattia@mapreri.org>2014-10-03 14:04:58 +0000
committerMattia Rizzolo <mattia@mapreri.org>2014-10-03 14:04:58 +0000
commit2d113e8792747151bf5d830f1a1485f2f951f940 (patch)
treef29e273d53fe5735cdac171504d798bf45ea2007 /frontend/xsane-preview.h
Imported Upstream version 0.50upstream/0.50
Diffstat (limited to 'frontend/xsane-preview.h')
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1 files changed, 178 insertions, 0 deletions
diff --git a/frontend/xsane-preview.h b/frontend/xsane-preview.h
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+/* 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 */