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(obj) GTK_CHECK_CAST (obj, gtk_gs_get_type (), GtkGS)
41 #define GTK_GS_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, gtk_gs_get_type (), GtkGSClass)
42 #define GTK_IS_GS(obj) GTK_CHECK_TYPE (obj, gtk_gs_get_type())
44 typedef struct _GtkGS GtkGS;
45 typedef struct _GtkGSClass GtkGSClass;
46 typedef struct _GtkGSPaperSize GtkGSPaperSize;
49 GTK_GS_ORIENTATION_NONE = -1,
50 GTK_GS_ORIENTATION_PORTRAIT = 0,
51 GTK_GS_ORIENTATION_SEASCAPE = 3,
52 GTK_GS_ORIENTATION_UPSIDEDOWN = 2,
53 GTK_GS_ORIENTATION_LANDSCAPE = 1
57 GTK_GS_ZOOM_ABSOLUTE = 0,
58 GTK_GS_ZOOM_FIT_WIDTH = 1,
59 GTK_GS_ZOOM_FIT_PAGE = 2
63 GtkWidget widget; /* the main widget */
64 GdkWindow *pstarget; /* the window passed to gv
65 * it is a child of widget...
67 GtkAdjustment *hadj, *vadj;
70 gint scroll_start_x, scroll_start_y;
71 gint scroll_width, scroll_height;
72 gboolean show_scroll_rect;
74 GtkGSZoomMode zoom_mode;
76 GdkPixmap *bpixmap; /* Backing pixmap */
79 long message_window; /* Used by ghostview to receive messages from app */
81 int disable_start; /* Can the interpreter be started? */
82 pid_t interpreter_pid; /* PID of interpreter, -1 if none */
83 int interpreter_input; /* stdin of interpreter */
84 int interpreter_output; /* stdout of interpreter */
85 int interpreter_err; /* stderr of interpreter */
86 guint interpreter_input_id;
87 guint interpreter_output_id;
88 guint interpreter_error_id;
98 gint width; /* Size of window at last setup() */
100 gboolean busy; /* Is gs busy drawing? */
101 gboolean changed; /* Anything changed since setup */
105 gboolean structured_doc;
108 struct record_list *ps_input;
109 gchar *input_buffer_ptr;
111 guint buffer_bytes_left;
113 FILE *gs_psfile; /* the currently loaded FILE */
114 gchar *gs_filename; /* the currently loaded filename */
115 gchar *gs_filename_dsc; /* Used to browse PDF to PS */
116 gchar *gs_filename_unc; /* Uncompressed file */
119 gboolean send_filename_to_gs; /* True if gs should read from file directly */
120 gboolean reading_from_pipe; /* True if ggv is reading input from pipe */
121 struct document *doc;
123 /* User selected options... */
124 gboolean antialiased; /* Using antialiased display */
125 gboolean respect_eof; /* respect EOF comments? */
127 gboolean override_size;
129 gboolean override_orientation;
130 gint fallback_orientation; /* Orientation to use if override */
131 gint real_orientation; /* Real orientation from the document */
133 const gchar *gs_status; /* GtkGS status */
135 guint avail_w, avail_h;
139 GtkWidgetClass parent_class;
141 GdkAtom gs_colors_atom;
147 GConfClient *gconf_client;
149 void (*interpreter_message) (GtkGS *, gchar *, gpointer);
150 void (*interpreter_error) (GtkGS *, gint, gpointer);
151 void (*set_scroll_adjustments) (GtkGS *, GtkAdjustment *, GtkAdjustment *);
155 /* structure to describe section of file to send to ghostscript */
160 gboolean seek_needed;
162 struct record_list *next;
165 struct _GtkGSPaperSize {
170 GType gtk_gs_get_type(void);
172 GtkWidget *gtk_gs_new_from_file(GtkAdjustment * hadj, GtkAdjustment * vadj,
174 GtkWidget *gtk_gs_new(GtkAdjustment * hadj, GtkAdjustment * vadj);
175 gboolean gtk_gs_load(GtkGS * gs, const gchar * fname);
176 void gtk_gs_reload(GtkGS * gs);
178 /* control functions */
179 void gtk_gs_center_page(GtkGS * gs);
180 void gtk_gs_scroll(GtkGS * gs, gint, gint);
181 gboolean gtk_gs_scroll_step(GtkGS * gs, GtkScrollType direction,
183 gboolean gtk_gs_scroll_to_edge(GtkGS * gs, GtkPositionType vertical,
184 GtkPositionType horizontal);
185 gboolean gtk_gs_next_page(GtkGS * gs);
186 gboolean gtk_gs_prev_page(GtkGS * gs);
187 gboolean gtk_gs_goto_page(GtkGS * gs, gint);
188 gint gtk_gs_enable_interpreter(GtkGS * gs);
189 void gtk_gs_disable_interpreter(GtkGS * gs);
191 gint gtk_gs_get_current_page(GtkGS * gs);
192 gint gtk_gs_get_page_count(GtkGS * gs);
193 gboolean gtk_gs_set_page_size(GtkGS * gs, gint new_pagesize, gint pageid);
194 gboolean gtk_gs_set_default_orientation(GtkGS * gs, gint orientation);
195 gint gtk_gs_get_default_orientation(GtkGS * gs);
196 void gtk_gs_set_default_size(GtkGS * gs, gint size);
197 gint gtk_gs_get_default_size(GtkGS * gs);
198 void gtk_gs_set_zoom(GtkGS * gs, gfloat zoom);
199 gfloat gtk_gs_get_zoom(GtkGS * gs);
200 void gtk_gs_set_scroll_step(GtkGS * gs, gfloat scroll_step);
201 gfloat gtk_gs_get_scroll_step(GtkGS * gs);
202 gfloat gtk_gs_zoom_to_fit(GtkGS * gs, gboolean fit_width);
203 void gtk_gs_set_center(GtkGS * gs, gfloat hval, gfloat vval);
204 gint gtk_gs_get_orientation(GtkGS * gs);
205 void gtk_gs_set_override_orientation(GtkGS * gs, gboolean f);
206 gboolean gtk_gs_get_override_orientation(GtkGS * gs);
207 void gtk_gs_set_respect_eof(GtkGS * gs, gboolean f);
208 gboolean gtk_gs_get_respect_eof(GtkGS * gs);
209 void gtk_gs_set_antialiasing(GtkGS * gs, gboolean f);
210 gboolean gtk_gs_get_antialiasing(GtkGS * gs);
211 void gtk_gs_set_override_size(GtkGS * gs, gboolean f);
212 gboolean gtk_gs_get_override_size(GtkGS * gs);
213 const gchar *gtk_gs_get_document_title(GtkGS * widget);
214 guint gtk_gs_get_document_numpages(GtkGS * widget);
215 const gchar *gtk_gs_get_document_page_label(GtkGS * widget, int page);
216 void gtk_gs_set_show_scroll_rect(GtkGS * gs, gboolean f);
217 gboolean gtk_gs_get_show_scroll_rect(GtkGS * gs);
219 void gtk_gs_start_scroll(GtkGS * gs);
220 void gtk_gs_end_scroll(GtkGS * gs);
222 void gtk_gs_set_zoom_mode(GtkGS * gs, GtkGSZoomMode zoom_mode);
223 GtkGSZoomMode gtk_gs_get_zoom_mode(GtkGS * gs);
225 void gtk_gs_set_available_size(GtkGS * gs, guint avail_w, guint avail_h);
227 /* utility functions */
228 gint gtk_gs_get_size_index(const gchar * string, GtkGSPaperSize * size);
230 gchar *gtk_gs_get_postscript(GtkGS * gs, gint * pages);
232 #define GTK_GS_IS_COMPRESSED(gs) (GTK_GS(gs)->gs_filename_unc != NULL)
233 #define GTK_GS_GET_PS_FILE(gs) (GTK_GS_IS_COMPRESSED(gs) ? \
234 GTK_GS(gs)->gs_filename_unc : \
235 GTK_GS(gs)->gs_filename)
236 #define GTK_GS_IS_PDF(gs) (GTK_GS(gs)->gs_filename_dsc != NULL)
237 #define GTK_GS_IS_STRUCTURED_DOC(gs) (GTK_GS(gs)->structured_doc)
241 #endif /* __GTK_GS_H__ */