1 files changed, 87 insertions, 0 deletions
diff --git a/src/preview.h b/src/preview.h
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+/* sane - Scanner Access Now Easy.
+   Copyright (C) 1997 David Mosberger-Tang
+   This file is part of the SANE package.
+
+   SANE 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.
+
+   SANE 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 sane; see the file COPYING.  If not, write to the Free
+   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+#ifndef preview_h
+#define preview_h
+
+#include <sys/types.h>
+
+#include "../include/sane/config.h"
+#include <sane/sane.h>
+
+typedef struct
+  {
+    GSGDialog *dialog;	/* the dialog for this preview */
+
+    SANE_Value_Type surface_type;
+    SANE_Unit surface_unit;
+    float surface[4];	/* the corners of the scan surface (device coords) */
+    float aspect;	/* the aspect ratio of the scan surface */
+
+    int saved_dpi_valid;
+    SANE_Word saved_dpi;
+    int saved_coord_valid[4];
+    SANE_Word saved_coord[4];
+
+    /* desired/user-selected preview-window size: */
+    int preview_width;
+    int preview_height;
+    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;
+    int image_height;
+    u_char *image_data;	/* 3 * image_width * image_height bytes */
+
+    GdkGC *gc;
+    int selection_drag;
+    struct
+      {
+	int active;
+	int coord[4];
+      }
+    selection, previous_selection;
+
+    GtkWidget *top;	/* top-level widget */
+    GtkWidget *hruler;
+    GtkWidget *vruler;
+    GtkWidget *viewport;
+    GtkWidget *window;	/* the preview window */
+    GtkWidget *cancel;	/* the cancel button */
+    GtkWidget *preview;	/* the preview button */
+  }
+Preview;
+
+/* Create a new preview based on the info in DIALOG.  */
+extern Preview *preview_new (GSGDialog *dialog);
+
+/* Some of the parameters may have changed---update the preview.  */
+extern void preview_update (Preview *p);
+
+/* Acquire a preview image and display it.  */
+extern void preview_scan (Preview *p);
+
+/* Destroy a preview.  */
+extern void preview_destroy (Preview *p);
+
+#endif /* preview_h */