2 * Ghostscript widget for GTK/GNOME
4 * Copyright 1998 - 2005 The Free Software Foundation
6 * Authors: Jaka Mocnik, Federico Mena (Quartic), Szekeres Istvan (Pista)
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
28 #include <gtk/gtkwidget.h>
30 #include <gconf/gconf-client.h>
35 #include <sys/types.h>
40 #define GTK_GS_TYPE (gtk_gs_get_type())
41 #define GTK_GS(obj) GTK_CHECK_CAST (obj, gtk_gs_get_type (), GtkGS)
42 #define GTK_GS_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, gtk_gs_get_type (), GtkGSClass)
43 #define GTK_IS_GS(obj) GTK_CHECK_TYPE (obj, gtk_gs_get_type())
45 typedef struct _GtkGS GtkGS;
46 typedef struct _GtkGSClass GtkGSClass;
47 typedef struct _GtkGSPaperSize GtkGSPaperSize;
50 GTK_GS_ORIENTATION_NONE = -1,
51 GTK_GS_ORIENTATION_PORTRAIT = 0,
52 GTK_GS_ORIENTATION_SEASCAPE = 3,
53 GTK_GS_ORIENTATION_UPSIDEDOWN = 2,
54 GTK_GS_ORIENTATION_LANDSCAPE = 1
58 GTK_GS_ZOOM_ABSOLUTE = 0,
59 GTK_GS_ZOOM_FIT_WIDTH = 1,
60 GTK_GS_ZOOM_FIT_PAGE = 2
64 GtkObject object; /* the main widget */
65 GdkWindow *pstarget; /* the window passed to gv
66 * it is a child of widget...
68 GtkAdjustment *hadj, *vadj;
71 gint scroll_start_x, scroll_start_y;
72 gint scroll_width, scroll_height;
73 gboolean show_scroll_rect;
75 GtkGSZoomMode zoom_mode;
77 GdkPixmap *bpixmap; /* Backing pixmap */
80 long message_window; /* Used by ghostview to receive messages from app */
82 int disable_start; /* Can the interpreter be started? */
83 pid_t interpreter_pid; /* PID of interpreter, -1 if none */
84 int interpreter_input; /* stdin of interpreter */
85 int interpreter_output; /* stdout of interpreter */
86 int interpreter_err; /* stderr of interpreter */
87 guint interpreter_input_id;
88 guint interpreter_output_id;
89 guint interpreter_error_id;
99 gint width; /* Size of window at last setup() */
101 gboolean busy; /* Is gs busy drawing? */
102 gboolean changed; /* Anything changed since setup */
106 gboolean structured_doc;
109 struct record_list *ps_input;
110 gchar *input_buffer_ptr;
112 guint buffer_bytes_left;
114 FILE *gs_psfile; /* the currently loaded FILE */
115 gchar *gs_filename; /* the currently loaded filename */
116 gchar *gs_filename_dsc; /* Used to browse PDF to PS */
117 gchar *gs_filename_unc; /* Uncompressed file */
120 gboolean send_filename_to_gs; /* True if gs should read from file directly */
121 gboolean reading_from_pipe; /* True if ggv is reading input from pipe */
122 struct document *doc;
124 /* User selected options... */
125 gboolean antialiased; /* Using antialiased display */
126 gboolean respect_eof; /* respect EOF comments? */
128 gboolean override_size;
130 gboolean override_orientation;
131 gint fallback_orientation; /* Orientation to use if override */
132 gint real_orientation; /* Real orientation from the document */
134 const gchar *gs_status; /* GtkGS status */
136 guint avail_w, avail_h;
140 GObjectClass parent_class;
142 GdkAtom gs_colors_atom;
148 GConfClient *gconf_client;
150 void (*interpreter_message) (GtkGS *, gchar *, gpointer);
151 void (*interpreter_error) (GtkGS *, gint, gpointer);
152 void (*set_scroll_adjustments) (GtkGS *, GtkAdjustment *, GtkAdjustment *);
156 /* structure to describe section of file to send to ghostscript */
161 gboolean seek_needed;
163 struct record_list *next;
166 struct _GtkGSPaperSize {
171 GType gtk_gs_get_type(void);
173 GObject *gtk_gs_new_from_file(GtkAdjustment * hadj, GtkAdjustment * vadj,
175 GObject *gtk_gs_new(GtkAdjustment * hadj, GtkAdjustment * vadj);
176 gboolean gtk_gs_load(GtkGS * gs, const gchar * fname);
177 void gtk_gs_reload(GtkGS * gs);
179 /* control functions */
180 void gtk_gs_center_page(GtkGS * gs);
181 void gtk_gs_scroll(GtkGS * gs, gint, gint);
182 gboolean gtk_gs_scroll_step(GtkGS * gs, GtkScrollType direction,
184 gboolean gtk_gs_scroll_to_edge(GtkGS * gs, GtkPositionType vertical,
185 GtkPositionType horizontal);
186 gboolean gtk_gs_next_page(GtkGS * gs);
187 gboolean gtk_gs_prev_page(GtkGS * gs);
188 gboolean gtk_gs_goto_page(GtkGS * gs, gint);
189 gint gtk_gs_enable_interpreter(GtkGS * gs);
190 void gtk_gs_disable_interpreter(GtkGS * gs);
192 gint gtk_gs_get_current_page(GtkGS * gs);
193 gint gtk_gs_get_page_count(GtkGS * gs);
194 gboolean gtk_gs_set_page_size(GtkGS * gs, gint new_pagesize, gint pageid);
195 gboolean gtk_gs_set_default_orientation(GtkGS * gs, gint orientation);
196 gint gtk_gs_get_default_orientation(GtkGS * gs);
197 void gtk_gs_set_default_size(GtkGS * gs, gint size);
198 gint gtk_gs_get_default_size(GtkGS * gs);
199 void gtk_gs_set_zoom(GtkGS * gs, gfloat zoom);
200 gfloat gtk_gs_get_zoom(GtkGS * gs);
201 void gtk_gs_set_scroll_step(GtkGS * gs, gfloat scroll_step);
202 gfloat gtk_gs_get_scroll_step(GtkGS * gs);
203 gfloat gtk_gs_zoom_to_fit(GtkGS * gs, gboolean fit_width);
204 void gtk_gs_set_center(GtkGS * gs, gfloat hval, gfloat vval);
205 gint gtk_gs_get_orientation(GtkGS * gs);
206 void gtk_gs_set_override_orientation(GtkGS * gs, gboolean f);
207 gboolean gtk_gs_get_override_orientation(GtkGS * gs);
208 void gtk_gs_set_respect_eof(GtkGS * gs, gboolean f);
209 gboolean gtk_gs_get_respect_eof(GtkGS * gs);
210 void gtk_gs_set_antialiasing(GtkGS * gs, gboolean f);
211 gboolean gtk_gs_get_antialiasing(GtkGS * gs);
212 void gtk_gs_set_override_size(GtkGS * gs, gboolean f);
213 gboolean gtk_gs_get_override_size(GtkGS * gs);
214 const gchar *gtk_gs_get_document_title(GtkGS * widget);
215 guint gtk_gs_get_document_numpages(GtkGS * widget);
216 const gchar *gtk_gs_get_document_page_label(GtkGS * widget, int page);
217 void gtk_gs_set_show_scroll_rect(GtkGS * gs, gboolean f);
218 gboolean gtk_gs_get_show_scroll_rect(GtkGS * gs);
220 void gtk_gs_start_scroll(GtkGS * gs);
221 void gtk_gs_end_scroll(GtkGS * gs);
223 void gtk_gs_set_zoom_mode(GtkGS * gs, GtkGSZoomMode zoom_mode);
224 GtkGSZoomMode gtk_gs_get_zoom_mode(GtkGS * gs);
226 void gtk_gs_set_available_size(GtkGS * gs, guint avail_w, guint avail_h);
228 /* utility functions */
229 gint gtk_gs_get_size_index(const gchar * string, GtkGSPaperSize * size);
231 gchar *gtk_gs_get_postscript(GtkGS * gs, gint * pages);
233 #define GTK_GS_IS_COMPRESSED(gs) (GTK_GS(gs)->gs_filename_unc != NULL)
234 #define GTK_GS_GET_PS_FILE(gs) (GTK_GS_IS_COMPRESSED(gs) ? \
235 GTK_GS(gs)->gs_filename_unc : \
236 GTK_GS(gs)->gs_filename)
237 #define GTK_GS_IS_PDF(gs) (GTK_GS(gs)->gs_filename_dsc != NULL)
238 #define GTK_GS_IS_STRUCTURED_DOC(gs) (GTK_GS(gs)->structured_doc)
242 #endif /* __GTK_GS_H__ */