Imported Upstream version 0.50upstream/0.50

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 */