Import ggv backend. Not hooked up yet.

2004-12-22  Marco Pesenti Gritti  <marco@gnome.org>

        * Makefile.am:
        * configure.ac:
        * ps/Makefile.am:
        * ps/ggvutils.c:
        * ps/ggvutils.h:
        * ps/gsdefaults.c:
        * ps/gsdefaults.h:
        * ps/gsio.c:
        * ps/gsio.h:
        * ps/gtkgs.c:
        * ps/gtkgs.h:
        * ps/ps.c:
        * ps/ps.h:

        Import ggv backend. Not hooked up yet.

1 files changed, 241 insertions, 0 deletions

diff --git a/ps/gtkgs.h b/ps/gtkgs.h
new file mode 100644
index 0000000..35f9bfd
--- /dev/null
+++ b/ps/gtkgs.h
@@ -0,0 +1,241 @@
+/*
+ * Ghostscript widget for GTK/GNOME
+ * 
+ * Copyright 1998 - 2005 The Free Software Foundation
+ * 
+ * Authors: Jaka Mocnik, Federico Mena (Quartic), Szekeres Istvan (Pista)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GTK_GS_H__
+#define __GTK_GS_H__
+
+#include <gdk/gdk.h>
+#include <gtk/gtkwidget.h>
+
+#include <gconf/gconf-client.h>
+
+#include <errno.h>
+#include <signal.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <stdio.h>
+
+G_BEGIN_DECLS
+
+#define GTK_GS(obj)         GTK_CHECK_CAST (obj, gtk_gs_get_type (), GtkGS)
+#define GTK_GS_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, gtk_gs_get_type (), GtkGSClass)
+#define GTK_IS_GS(obj)      GTK_CHECK_TYPE (obj, gtk_gs_get_type())
+
+typedef struct _GtkGS GtkGS;
+typedef struct _GtkGSClass GtkGSClass;
+typedef struct _GtkGSPaperSize GtkGSPaperSize;
+
+typedef enum {
+  GTK_GS_ORIENTATION_NONE = -1,
+  GTK_GS_ORIENTATION_PORTRAIT = 0,
+  GTK_GS_ORIENTATION_SEASCAPE = 3,
+  GTK_GS_ORIENTATION_UPSIDEDOWN = 2,
+  GTK_GS_ORIENTATION_LANDSCAPE = 1
+} GtkGSOrientation;
+
+typedef enum {
+  GTK_GS_ZOOM_ABSOLUTE = 0,
+  GTK_GS_ZOOM_FIT_WIDTH = 1,
+  GTK_GS_ZOOM_FIT_PAGE = 2
+} GtkGSZoomMode;
+
+struct _GtkGS {
+  GtkWidget widget;             /* the main widget */
+  GdkWindow *pstarget;          /* the window passed to gv
+                                 * it is a child of widget...
+                                 */
+  GtkAdjustment *hadj, *vadj;
+
+  GdkGC *psgc;
+  gint scroll_start_x, scroll_start_y;
+  gint scroll_width, scroll_height;
+  gboolean show_scroll_rect;
+
+  GtkGSZoomMode zoom_mode;
+
+  GdkPixmap *bpixmap;           /* Backing pixmap */
+  int use_bpixmap;
+
+  long message_window;          /* Used by ghostview to receive messages from app */
+
+  int disable_start;            /* Can the interpreter be started? */
+  pid_t interpreter_pid;        /* PID of interpreter, -1 if none  */
+  int interpreter_input;        /* stdin of interpreter            */
+  int interpreter_output;       /* stdout of interpreter           */
+  int interpreter_err;          /* stderr of interpreter           */
+  guint interpreter_input_id;
+  guint interpreter_output_id;
+  guint interpreter_error_id;
+
+  gint llx;
+  gint lly;
+  gint urx;
+  gint ury;
+  gint left_margin;
+  gint right_margin;
+  gint top_margin;
+  gint bottom_margin;
+  gint width;                   /* Size of window at last setup()  */
+  gint height;
+  gboolean busy;                /* Is gs busy drawing? */
+  gboolean changed;             /* Anything changed since setup */
+  gfloat zoom_factor;
+  gfloat scroll_step;
+  gint current_page;
+  gboolean structured_doc;
+  gboolean loaded;
+
+  struct record_list *ps_input;
+  gchar *input_buffer_ptr;
+  guint bytes_left;
+  guint buffer_bytes_left;
+
+  FILE *gs_psfile;              /* the currently loaded FILE */
+  gchar *gs_filename;           /* the currently loaded filename */
+  gchar *gs_filename_dsc;       /* Used to browse PDF to PS */
+  gchar *gs_filename_unc;       /* Uncompressed file */
+  gchar *input_buffer;
+  gint gs_scanstyle;
+  gboolean send_filename_to_gs; /* True if gs should read from file directly */
+  gboolean reading_from_pipe;   /* True if ggv is reading input from pipe */
+  struct document *doc;
+
+  /* User selected options... */
+  gboolean antialiased;         /* Using antialiased display */
+  gboolean respect_eof;         /* respect EOF comments? */
+  gint default_size;
+  gboolean override_size;
+  gfloat xdpi, ydpi;
+  gboolean override_orientation;
+  gint fallback_orientation;    /* Orientation to use if override */
+  gint real_orientation;        /* Real orientation from the document */
+
+  const gchar *gs_status;       /* GtkGS status */
+
+  guint avail_w, avail_h;
+};
+
+struct _GtkGSClass {
+  GtkWidgetClass parent_class;
+  GdkAtom gs_atom;
+  GdkAtom gs_colors_atom;
+  GdkAtom next_atom;
+  GdkAtom page_atom;
+  GdkAtom done_atom;
+  GdkAtom string_atom;
+
+  GConfClient *gconf_client;
+
+  void (*interpreter_message) (GtkGS *, gchar *, gpointer);
+  void (*interpreter_error) (GtkGS *, gint, gpointer);
+  void (*set_scroll_adjustments) (GtkGS *, GtkAdjustment *, GtkAdjustment *);
+};
+
+
+/* structure to describe section of file to send to ghostscript */
+struct record_list {
+  FILE *fp;
+  long begin;
+  guint len;
+  gboolean seek_needed;
+  gboolean close;
+  struct record_list *next;
+};
+
+struct _GtkGSPaperSize {
+  gchar *name;
+  gint width, height;
+};
+
+GType gtk_gs_get_type(void);
+
+GtkWidget *gtk_gs_new_from_file(GtkAdjustment * hadj, GtkAdjustment * vadj,
+                                gchar * fname);
+GtkWidget *gtk_gs_new(GtkAdjustment * hadj, GtkAdjustment * vadj);
+gboolean gtk_gs_load(GtkGS * gs, const gchar * fname);
+void gtk_gs_reload(GtkGS * gs);
+
+/* control functions */
+void gtk_gs_center_page(GtkGS * gs);
+void gtk_gs_scroll(GtkGS * gs, gint, gint);
+gboolean gtk_gs_scroll_step(GtkGS * gs, GtkScrollType direction,
+                            gboolean dowrap);
+gboolean gtk_gs_scroll_to_edge(GtkGS * gs, GtkPositionType vertical,
+                               GtkPositionType horizontal);
+gboolean gtk_gs_next_page(GtkGS * gs);
+gboolean gtk_gs_prev_page(GtkGS * gs);
+gboolean gtk_gs_goto_page(GtkGS * gs, gint);
+gint gtk_gs_enable_interpreter(GtkGS * gs);
+void gtk_gs_disable_interpreter(GtkGS * gs);
+
+gint gtk_gs_get_current_page(GtkGS * gs);
+gint gtk_gs_get_page_count(GtkGS * gs);
+gboolean gtk_gs_set_page_size(GtkGS * gs, gint new_pagesize, gint pageid);
+gboolean gtk_gs_set_default_orientation(GtkGS * gs, gint orientation);
+gint gtk_gs_get_default_orientation(GtkGS * gs);
+void gtk_gs_set_default_size(GtkGS * gs, gint size);
+gint gtk_gs_get_default_size(GtkGS * gs);
+void gtk_gs_set_zoom(GtkGS * gs, gfloat zoom);
+gfloat gtk_gs_get_zoom(GtkGS * gs);
+void gtk_gs_set_scroll_step(GtkGS * gs, gfloat scroll_step);
+gfloat gtk_gs_get_scroll_step(GtkGS * gs);
+gfloat gtk_gs_zoom_to_fit(GtkGS * gs, gboolean fit_width);
+void gtk_gs_set_center(GtkGS * gs, gfloat hval, gfloat vval);
+gint gtk_gs_get_orientation(GtkGS * gs);
+void gtk_gs_set_override_orientation(GtkGS * gs, gboolean f);
+gboolean gtk_gs_get_override_orientation(GtkGS * gs);
+void gtk_gs_set_respect_eof(GtkGS * gs, gboolean f);
+gboolean gtk_gs_get_respect_eof(GtkGS * gs);
+void gtk_gs_set_antialiasing(GtkGS * gs, gboolean f);
+gboolean gtk_gs_get_antialiasing(GtkGS * gs);
+void gtk_gs_set_override_size(GtkGS * gs, gboolean f);
+gboolean gtk_gs_get_override_size(GtkGS * gs);
+const gchar *gtk_gs_get_document_title(GtkGS * widget);
+guint gtk_gs_get_document_numpages(GtkGS * widget);
+const gchar *gtk_gs_get_document_page_label(GtkGS * widget, int page);
+void gtk_gs_set_show_scroll_rect(GtkGS * gs, gboolean f);
+gboolean gtk_gs_get_show_scroll_rect(GtkGS * gs);
+
+void gtk_gs_start_scroll(GtkGS * gs);
+void gtk_gs_end_scroll(GtkGS * gs);
+
+void gtk_gs_set_zoom_mode(GtkGS * gs, GtkGSZoomMode zoom_mode);
+GtkGSZoomMode gtk_gs_get_zoom_mode(GtkGS * gs);
+
+void gtk_gs_set_available_size(GtkGS * gs, guint avail_w, guint avail_h);
+
+/* utility functions */
+gint gtk_gs_get_size_index(const gchar * string, GtkGSPaperSize * size);
+
+gchar *gtk_gs_get_postscript(GtkGS * gs, gint * pages);
+
+#define GTK_GS_IS_COMPRESSED(gs)       (GTK_GS(gs)->gs_filename_unc != NULL)
+#define GTK_GS_GET_PS_FILE(gs)         (GTK_GS_IS_COMPRESSED(gs) ? \
+                                        GTK_GS(gs)->gs_filename_unc : \
+                                        GTK_GS(gs)->gs_filename)
+#define GTK_GS_IS_PDF(gs)              (GTK_GS(gs)->gs_filename_dsc != NULL)
+#define GTK_GS_IS_STRUCTURED_DOC(gs)   (GTK_GS(gs)->structured_doc)
+
+G_END_DECLS
+
+#endif /* __GTK_GS_H__ */