* Boston, MA 02111-1307, USA.
*/
-/*
-Ghostview interface to ghostscript
-
-When the GHOSTVIEW environment variable is set, ghostscript draws on
-an existing drawable rather than creating its own window. Ghostscript
-can be directed to draw on either a window or a pixmap.
-
-Drawing on a Window
-
-The GHOSTVIEW environment variable contains the window id of the target
-window. The window id is an integer. Ghostscript will use the attributes
-of the window to obtain the width, height, colormap, screen, and visual of
-the window. The remainder of the information is gotten from the GHOSTVIEW
-property on that window.
-
-
-Drawing on a Pixmap
-
-The GHOSTVIEW environment variable contains a window id and a pixmap id.
-They are integers separated by white space. Ghostscript will use the
-attributes of the window to obtain the colormap, screen, and visual to use.
-The width and height will be obtained from the pixmap. The remainder of the
-information, is gotten from the GHOSTVIEW property on the window. In this
-case, the property is deleted when read.
-
-The GHOSTVIEW environment variable
-
-parameters: window-id [pixmap-id]
-
-scanf format: "%d %d"
-
-explanation of parameters:
-
- window-id: tells ghostscript where to
- - read the GHOSTVIEW property
- - send events
- If pixmap-id is not present,
- ghostscript will draw on this window.
-
- pixmap-id: If present, tells ghostscript that a pixmap will be used
- as the final destination for drawing. The window will
- not be touched for drawing purposes.
-
-The GHOSTVIEW property
-
-type: STRING
-
-parameters:
-
- bpixmap orient llx lly urx ury xdpi ydpi [left bottom top right]
-
-scanf format: "%d %d %d %d %d %d %f %f %d %d %d %d"
-
-explanation of parameters:
-
- bpixmap: pixmap id of the backing pixmap for the window. If no
- pixmap is to be used, this parameter should be zero. This
- parameter must be zero when drawing on a pixmap.
-
- orient: orientation of the page. The number represents clockwise
- rotation of the paper in degrees. Permitted values are
- 0, 90, 180, 270.
-
- llx, lly, urx, ury: Bounding box of the drawable. The bounding box
- is specified in PostScript points in default user coordinates.
-
- xdpi, ydpi: Resolution of window. (This can be derived from the
- other parameters, but not without roundoff error. These
- values are included to avoid this error.)
-
- left, bottom, top, right: (optional)
- Margins around the window. The margins extend the imageable
- area beyond the boundaries of the window. This is primarily
- used for popup zoom windows. I have encountered several
- instances of PostScript programs that position themselves
- with respect to the imageable area. The margins are specified
- in PostScript points. If omitted, the margins are assumed to
- be 0.
-
-Events from ghostscript
-
-If the final destination is a pixmap, the client will get a property notify
-event when ghostscript reads the GHOSTVIEW property causing it to be deleted.
-
-Ghostscript sends events to the window where it read the GHOSTVIEW property.
-These events are of type ClientMessage. The message_type is set to
-either PAGE or DONE. The first long data value gives the window to be used
-to send replies to ghostscript. The second long data value gives the primary
-drawable. If rendering to a pixmap, it is the primary drawable. If rendering
-to a window, the backing pixmap is the primary drawable. If no backing pixmap
-is employed, then the window is the primary drawable. This field is necessary
-to distinguish multiple ghostscripts rendering to separate pixmaps where the
-GHOSTVIEW property was placed on the same window.
-
-The PAGE message indicates that a "page" has completed. Ghostscript will
-wait until it receives a ClientMessage whose message_type is NEXT before
-continuing.
-
-The DONE message indicates that ghostscript has finished processing.
-
-*/
-
#include "config.h"
#include <string.h>
#include <stdlib.h>
#include <gdk/gdkx.h>
#include <gdk/gdk.h>
#include <glib/gi18n.h>
-#ifdef HAVE_XINERAMA
-# include <gdk/gdkx.h>
-# include <X11/extensions/Xinerama.h>
-#endif /* HAVE_XINERAMA */
#include <X11/Intrinsic.h>
#include <unistd.h>
#include <fcntl.h>
# define O_NONBLOCK O_NDELAY
#endif
-#define PS_DOCUMENT_WATCH_INTERVAL 1000
-#define PS_DOCUMENT_WATCH_TIMEOUT 2
-
#define MAX_BUFSIZE 1024
#define PS_DOCUMENT_IS_COMPRESSED(gs) (PS_DOCUMENT(gs)->gs_filename_unc != NULL)
PS_DOCUMENT(gs)->gs_filename_unc : \
PS_DOCUMENT(gs)->gs_filename)
-enum { INTERPRETER_MESSAGE, INTERPRETER_ERROR, LAST_SIGNAL };
+GCond* pixbuf_cond = NULL;
+GMutex* pixbuf_mutex = NULL;
+GdkPixbuf *current_pixbuf = NULL;
enum {
PROP_0,
static gboolean broken_pipe = FALSE;
-static void
-catchPipe(int i)
-{
- broken_pipe = True;
-}
-
/* Forward declarations */
static void ps_document_init(PSDocument * gs);
static void ps_document_class_init(PSDocumentClass * klass);
-static void ps_document_emit_error_msg(PSDocument * gs, const gchar * msg);
static void ps_document_finalize(GObject * object);
static void send_ps(PSDocument * gs, long begin, unsigned int len, gboolean close);
-static void set_up_page(PSDocument * gs);
static void close_pipe(int p[2]);
-static void interpreter_failed(PSDocument * gs);
-static float compute_xdpi(void);
-static float compute_ydpi(void);
-static gboolean compute_size(PSDocument * gs);
static void output(gpointer data, gint source, GdkInputCondition condition);
static void input(gpointer data, gint source, GdkInputCondition condition);
static void stop_interpreter(PSDocument * gs);
static gint start_interpreter(PSDocument * gs);
-gboolean computeSize(void);
-static gboolean ps_document_set_page_size(PSDocument * gs, gint new_pagesize, gint pageid);
static void ps_document_document_iface_init (EvDocumentIface *iface);
-static gboolean ps_document_goto_page(PSDocument * gs, gint page);
+static gboolean ps_document_widget_event (GtkWidget *widget, GdkEvent *event, gpointer data);
static GObjectClass *parent_class = NULL;
static PSDocumentClass *gs_class = NULL;
static void
-ps_document_init(PSDocument * gs)
+ps_document_init (PSDocument *gs)
{
- gs->bpixmap = NULL;
+ gs->bpixmap = NULL;
- gs->current_page = 0;
- gs->disable_start = FALSE;
- gs->interpreter_pid = -1;
+ gs->current_page = 0;
+ gs->interpreter_pid = -1;
- gs->width = -1;
- gs->height = -1;
- gs->busy = FALSE;
- gs->changed = FALSE;
- gs->gs_scanstyle = 0;
- gs->gs_filename = 0;
- gs->gs_filename_dsc = 0;
- gs->gs_filename_unc = 0;
+ gs->width = -1;
+ gs->height = -1;
+ gs->busy = FALSE;
+ gs->gs_filename = 0;
+ gs->gs_filename_unc = 0;
- broken_pipe = FALSE;
+ broken_pipe = FALSE;
- gs->structured_doc = FALSE;
- gs->reading_from_pipe = FALSE;
- gs->send_filename_to_gs = FALSE;
+ gs->structured_doc = FALSE;
+ gs->reading_from_pipe = FALSE;
+ gs->send_filename_to_gs = FALSE;
- gs->doc = NULL;
- gs->loaded = FALSE;
+ gs->doc = NULL;
+ gs->loaded = FALSE;
+
+ gs->interpreter_input = -1;
+ gs->interpreter_output = -1;
+ gs->interpreter_err = -1;
+ gs->interpreter_input_id = 0;
+ gs->interpreter_output_id = 0;
+ gs->interpreter_error_id = 0;
+
+ gs->ps_input = NULL;
+ gs->input_buffer = NULL;
+ gs->input_buffer_ptr = NULL;
+ gs->bytes_left = 0;
+ gs->buffer_bytes_left = 0;
- gs->interpreter_input = -1;
- gs->interpreter_output = -1;
- gs->interpreter_err = -1;
- gs->interpreter_input_id = 0;
- gs->interpreter_output_id = 0;
- gs->interpreter_error_id = 0;
-
- gs->ps_input = NULL;
- gs->input_buffer = NULL;
- gs->input_buffer_ptr = NULL;
- gs->bytes_left = 0;
- gs->buffer_bytes_left = 0;
-
- gs->llx = 0;
- gs->lly = 0;
- gs->urx = 0;
- gs->ury = 0;
- gs->xdpi = compute_xdpi();
- gs->ydpi = compute_ydpi();
-
- gs->left_margin = 0;
- gs->top_margin = 0;
- gs->right_margin = 0;
- gs->bottom_margin = 0;
-
- gs->page_x_offset = 0;
- gs->page_y_offset = 0;
-
- /* Set user defined defaults */
- gs->fallback_orientation = GTK_GS_ORIENTATION_PORTRAIT;
- gs->zoom_factor = 1.0;
- gs->default_size = 1;
- gs->antialiased = TRUE;
- gs->respect_eof = TRUE;
-
- gs->gs_status = _("No document loaded.");
+ gs->page_x_offset = 0;
+ gs->page_y_offset = 0;
+ gs->zoom_factor = 1.0;
+
+ gs->gs_status = _("No document loaded.");
+
+ pixbuf_cond = g_cond_new ();
+ pixbuf_mutex = g_mutex_new ();
}
static void
static void
ps_document_class_init(PSDocumentClass *klass)
{
- GObjectClass *object_class;
+ GObjectClass *object_class;
- object_class = (GObjectClass *) klass;
- parent_class = g_type_class_peek_parent (klass);
- gs_class = klass;
+ object_class = (GObjectClass *) klass;
+ parent_class = g_type_class_peek_parent (klass);
+ gs_class = klass;
- object_class->finalize = ps_document_finalize;
- object_class->get_property = ps_document_get_property;
- object_class->set_property = ps_document_set_property;
+ object_class->finalize = ps_document_finalize;
+ object_class->get_property = ps_document_get_property;
+ object_class->set_property = ps_document_set_property;
- /* Create atoms */
- klass->gs_atom = gdk_atom_intern("GHOSTVIEW", FALSE);
- klass->next_atom = gdk_atom_intern("NEXT", FALSE);
- klass->page_atom = gdk_atom_intern("PAGE", FALSE);
- klass->string_atom = gdk_atom_intern("STRING", FALSE);
+ klass->gs_atom = gdk_atom_intern ("GHOSTVIEW", FALSE);
+ klass->next_atom = gdk_atom_intern ("NEXT", FALSE);
+ klass->page_atom = gdk_atom_intern ("PAGE", FALSE);
+ klass->string_atom = gdk_atom_intern ("STRING", FALSE);
- g_object_class_override_property (object_class, PROP_TITLE, "title");
+ g_object_class_override_property (object_class, PROP_TITLE, "title");
}
-/* Clean all memory and temporal files */
static void
-ps_document_cleanup(PSDocument * gs)
+push_pixbuf (PSDocument *gs)
{
- g_return_if_fail(gs != NULL);
- g_return_if_fail(GTK_IS_GS(gs));
+ GdkColormap *cmap;
+ GdkPixbuf *pixbuf;
+
+ cmap = gdk_window_get_colormap (gs->pstarget);
+
+ pixbuf = gdk_pixbuf_get_from_drawable (NULL, gs->bpixmap, cmap,
+ 0, 0, 0, 0,
+ gs->width, gs->height);
+ g_mutex_lock (pixbuf_mutex);
+ current_pixbuf = pixbuf;
+ g_cond_signal (pixbuf_cond);
+ g_mutex_unlock (pixbuf_mutex);
- stop_interpreter(gs);
+}
- if(gs->gs_psfile) {
- fclose(gs->gs_psfile);
- gs->gs_psfile = NULL;
- }
- if(gs->gs_filename) {
- g_free(gs->gs_filename);
- gs->gs_filename = NULL;
- }
- if(gs->doc) {
- psfree(gs->doc);
- gs->doc = NULL;
- }
- if(gs->gs_filename_dsc) {
- unlink(gs->gs_filename_dsc);
- g_free(gs->gs_filename_dsc);
- gs->gs_filename_dsc = NULL;
- }
- if(gs->gs_filename_unc) {
- unlink(gs->gs_filename_unc);
- g_free(gs->gs_filename_unc);
- gs->gs_filename_unc = NULL;
- }
- gs->current_page = 0;
- gs->loaded = FALSE;
- gs->llx = 0;
- gs->lly = 0;
- gs->urx = 0;
- gs->ury = 0;
- set_up_page(gs);
+static void
+interpreter_failed (PSDocument *gs, char *msg)
+{
+ LOG ("Interpreter failed %s", msg);
+
+ push_pixbuf (gs);
+
+ stop_interpreter (gs);
+}
+
+static void
+ps_document_cleanup (PSDocument *gs)
+{
+ g_return_if_fail (gs != NULL);
+ g_return_if_fail (PS_IS_DOCUMENT (gs));
+
+ LOG ("Cleanup\n");
+
+ stop_interpreter (gs);
+
+ if (gs->gs_psfile) {
+ fclose (gs->gs_psfile);
+ gs->gs_psfile = NULL;
+ }
+
+ if (gs->gs_filename) {
+ g_free (gs->gs_filename);
+ gs->gs_filename = NULL;
+ }
+
+ if (gs->doc) {
+ psfree (gs->doc);
+ gs->doc = NULL;
+ }
+
+ if (gs->gs_filename_unc) {
+ unlink(gs->gs_filename_unc);
+ g_free(gs->gs_filename_unc);
+ gs->gs_filename_unc = NULL;
+ }
+
+ gs->current_page = 0;
+ gs->loaded = FALSE;
}
static gboolean
LOG ("GS rendered the document");
gs->busy = FALSE;
- if (gs->scaling) {
- ev_document_scale_changed (EV_DOCUMENT (gs));
- gs->scaling = FALSE;
- } else {
- ev_document_page_changed (EV_DOCUMENT (gs));
- }
+ push_pixbuf (gs);
}
return TRUE;
}
-static void
-ps_document_set_target (EvDocument *document,
- GdkDrawable *target)
-{
- PSDocument *gs = PS_DOCUMENT (document);
- GtkWidget *widget;
- gpointer data;
-
- if (gs->pstarget) {
- gdk_window_get_user_data (gs->pstarget, &data);
- g_return_if_fail (GTK_IS_WIDGET (data));
-
- widget = GTK_WIDGET (data);
- g_signal_handlers_disconnect_by_func
- (widget, ps_document_widget_event, document);
- }
-
- gs->pstarget = target;
-
- if (gs->pstarget) {
- gdk_window_get_user_data (gs->pstarget, &data);
- g_return_if_fail (GTK_IS_WIDGET (data));
-
- widget = GTK_WIDGET (data);
- g_signal_connect (widget, "event",
- G_CALLBACK (ps_document_widget_event),
- document);
- }
-
- ps_document_goto_page (gs, gs->current_page);
-}
-
static void
ps_document_finalize (GObject * object)
{
PSDocument *gs;
g_return_if_fail (object != NULL);
- g_return_if_fail (GTK_IS_GS (object));
+ g_return_if_fail (PS_IS_DOCUMENT (object));
LOG ("Finalize");
ps_document_cleanup (gs);
stop_interpreter (gs);
- ps_document_set_target (EV_DOCUMENT (object), NULL);
-
if(gs->input_buffer) {
g_free(gs->input_buffer);
gs->input_buffer = NULL;
}
- (*G_OBJECT_CLASS(parent_class)->finalize) (object);
+ (*G_OBJECT_CLASS (parent_class)->finalize) (object);
}
static void
}
}
-static gint
-ps_document_get_orientation(PSDocument * gs)
+static float
+get_xdpi (PSDocument *gs)
{
- g_return_val_if_fail(gs != NULL, -1);
- g_return_val_if_fail(GTK_IS_GS(gs), -1);
-
- if(gs->doc) {
- if(gs->structured_doc) {
- if(gs->doc->pages[MAX(gs->current_page, 0)].orientation !=
- GTK_GS_ORIENTATION_NONE)
- gs->real_orientation =
- gs->doc->pages[MAX(gs->current_page, 0)].orientation;
- else
- gs->real_orientation = gs->doc->default_page_orientation;
- }
-
- if(gs->real_orientation == GTK_GS_ORIENTATION_NONE)
- gs->real_orientation = gs->doc->orientation;
- }
+ return 25.4 * gdk_screen_width() / gdk_screen_width_mm();
+}
- if(gs->real_orientation == GTK_GS_ORIENTATION_NONE)
- return gs->fallback_orientation;
- else
- return gs->real_orientation;
+static float
+get_ydpi (PSDocument *gs)
+{
+ return 25.4 * gdk_screen_height() / gdk_screen_height_mm();
}
static void
-set_up_page(PSDocument * gs)
+setup_pixmap (PSDocument *gs)
{
- guint orientation;
- char buf[1024];
- //GdkColormap *colormap;
- GdkGC *fill;
- GdkColor white = { 0, 0xFFFF, 0xFFFF, 0xFFFF }; /* pixel, r, g, b */
- GdkColormap *colormap;
- gboolean size_changed;
-
-#ifdef HAVE_LOCALE_H
- char *savelocale;
-#endif
-
- LOG ("Setup the page");
-
- size_changed = compute_size (gs);
-
- if (gs->pstarget == NULL)
- return;
-
- /* Do we have to check if the actual geometry changed? */
-
- stop_interpreter(gs);
-
- orientation = ps_document_get_orientation(gs);
-
- if (size_changed || gs->bpixmap == NULL) {
- gdk_flush();
-
- /* clear new pixmap (set to white) */
- fill = gdk_gc_new(gs->pstarget);
- if(fill) {
- colormap = gdk_drawable_get_colormap(gs->pstarget);
- gdk_color_alloc (colormap, &white);
- gdk_gc_set_foreground(fill, &white);
-
- if(gs->width > 0 && gs->height > 0) {
- if(gs->bpixmap) {
- gdk_drawable_unref(gs->bpixmap);
- gs->bpixmap = NULL;
- }
+ GdkGC *fill;
+ GdkColor white = { 0, 0xFFFF, 0xFFFF, 0xFFFF }; /* pixel, r, g, b */
+ GdkColormap *colormap;
LOG ("Create our internal pixmap");
- gs->bpixmap = gdk_pixmap_new(gs->pstarget, gs->width, gs->height, -1);
- gdk_draw_rectangle(gs->bpixmap, fill, TRUE,
- 0, 0, gs->width, gs->height);
- }
- else {
- gdk_draw_rectangle(gs->pstarget, fill, TRUE,
- 0, 0, gs->width, gs->height);
- }
- gdk_gc_unref(fill);
+ if(gs->bpixmap) {
+ gdk_drawable_unref(gs->bpixmap);
+ }
- gdk_flush();
- }
- }
+ fill = gdk_gc_new (gs->pstarget);
+ colormap = gdk_drawable_get_colormap (gs->pstarget);
+ gdk_color_alloc (colormap, &white);
+ gdk_gc_set_foreground (fill, &white);
+ gs->bpixmap = gdk_pixmap_new (gs->pstarget, gs->width, gs->height, -1);
+ gdk_draw_rectangle (gs->bpixmap, fill, TRUE,
+ 0, 0, gs->width, gs->height);
+}
+static void
+setup_page (PSDocument *gs)
+{
+ char buf[1024];
#ifdef HAVE_LOCALE_H
- /* gs needs floating point parameters with '.' as decimal point
- * while some (european) locales use ',' instead, so we set the
- * locale for this snprintf to "C".
- */
- savelocale = setlocale(LC_NUMERIC, "C");
+ char *savelocale;
#endif
- g_snprintf(buf, 1024, "%ld %d %d %d %d %d %f %f %d %d %d %d",
- 0L,
- orientation * 90,
- gs->llx,
- gs->lly,
- gs->urx,
- gs->ury,
- gs->xdpi * gs->zoom_factor,
- gs->ydpi * gs->zoom_factor,
- gs->left_margin,
- gs->bottom_margin, gs->right_margin, gs->top_margin);
+ LOG ("Setup the page");
- LOG ("GS property %s", buf);
+#ifdef HAVE_LOCALE_H
+ /* gs needs floating point parameters with '.' as decimal point
+ * while some (european) locales use ',' instead, so we set the
+ * locale for this snprintf to "C".
+ */
+ savelocale = setlocale (LC_NUMERIC, "C");
+#endif
+
+ g_snprintf (buf, 1024, "%ld %d %d %d %d %d %f %f %d %d %d %d",
+ 0L, gs->orientation * 90, gs->llx, gs->lly, gs->urx, gs->ury,
+ get_xdpi (gs) * gs->zoom_factor,
+ get_ydpi (gs) * gs->zoom_factor,
+ 0, 0, 0, 0);
+ LOG ("GS property %s", buf);
#ifdef HAVE_LOCALE_H
- setlocale(LC_NUMERIC, savelocale);
+ setlocale(LC_NUMERIC, savelocale);
#endif
- gdk_property_change(gs->pstarget,
- gs_class->gs_atom,
- gs_class->string_atom,
- 8, GDK_PROP_MODE_REPLACE, buf, strlen(buf));
- gdk_flush();
+ gdk_property_change (gs->pstarget, gs_class->gs_atom, gs_class->string_atom,
+ 8, GDK_PROP_MODE_REPLACE, (guchar *)buf, strlen(buf));
+ gdk_flush ();
}
static void
-close_pipe(int p[2])
+close_pipe (int p[2])
{
- if(p[0] != -1)
- close(p[0]);
- if(p[1] != -1)
- close(p[1]);
+ if (p[0] != -1) {
+ close (p[0]);
+ }
+ if (p[1] != -1) {
+ close (p[1]);
+ }
}
static gboolean
-is_interpreter_ready(PSDocument * gs)
+is_interpreter_ready (PSDocument *gs)
{
- return (gs->interpreter_pid != -1 && !gs->busy && gs->ps_input == NULL);
-}
-
-static void
-interpreter_failed(PSDocument * gs)
-{
- stop_interpreter(gs);
+ return (gs->interpreter_pid != -1 && !gs->busy && gs->ps_input == NULL);
}
static void
}
else if(bytes == -1) {
/* trouble... */
- interpreter_failed(gs);
+ interpreter_failed(gs, NULL);
return;
}
if(gs->interpreter_err == -1) {
- stop_interpreter(gs);
+ interpreter_failed(gs, NULL);
}
}
else if(source == gs->interpreter_err) {
}
else if(bytes == -1) {
/* trouble... */
- interpreter_failed(gs);
+ interpreter_failed(gs, NULL);
return;
}
if(gs->interpreter_output == -1) {
- stop_interpreter(gs);
+ interpreter_failed(gs, NULL);
}
}
if(bytes > 0) {
buf[bytes] = '\0';
msg = g_strdup(buf);
- ps_document_emit_error_msg (gs, msg);
+ interpreter_failed (gs, msg);
}
}
+static void
+catchPipe(int i)
+{
+ broken_pipe = True;
+}
+
static void
input(gpointer data, gint source, GdkInputCondition condition)
{
void (*oldsig) (int);
oldsig = signal(SIGPIPE, catchPipe);
+ LOG ("Input");
+
do {
if(gs->buffer_bytes_left == 0) {
/* Get a new section if required */
gs->buffer_bytes_left = 0;
}
if(gs->bytes_left > 0 && gs->buffer_bytes_left == 0) {
- interpreter_failed(gs); /* Error occurred */
+ interpreter_failed (gs, NULL); /* Error occurred */
}
gs->input_buffer_ptr = gs->input_buffer;
gs->bytes_left -= gs->buffer_bytes_left;
}
if(gs->buffer_bytes_left > 0) {
- /* g_print (" writing: %s\n",gs->input_buffer_ptr); */
-
bytes_written = write(gs->interpreter_input,
gs->input_buffer_ptr, gs->buffer_bytes_left);
if(broken_pipe) {
- ps_document_emit_error_msg(gs, g_strdup(_("Broken pipe.")));
+ interpreter_failed (gs, g_strdup(_("Broken pipe.")));
broken_pipe = FALSE;
- interpreter_failed(gs);
+ interpreter_failed (gs, NULL);
}
else if(bytes_written == -1) {
if((errno != EWOULDBLOCK) && (errno != EAGAIN)) {
- interpreter_failed(gs); /* Something bad happened */
+ interpreter_failed (gs, NULL); /* Something bad happened */
}
}
else {
}
static int
-start_interpreter(PSDocument * gs)
+start_interpreter (PSDocument *gs)
{
- int std_in[2] = { -1, -1 }; /* pipe to interp stdin */
- int std_out[2]; /* pipe from interp stdout */
- int std_err[2]; /* pipe from interp stderr */
+ int std_in[2] = { -1, -1 }; /* pipe to interp stdin */
+ int std_out[2]; /* pipe from interp stdout */
+ int std_err[2]; /* pipe from interp stderr */
#define NUM_ARGS 100
#define NUM_GS_ARGS (NUM_ARGS - 20)
#define NUM_ALPHA_ARGS 10
- char *argv[NUM_ARGS], *dir, *gv_env;
- char **gs_args, **alpha_args = NULL;
- int argc = 0, i;
+ char *argv[NUM_ARGS], *dir, *gv_env;
+ char **gs_args, **alpha_args = NULL;
+ int argc = 0, i;
- LOG ("Start the interpreter");
+ LOG ("Start the interpreter");
- if(!gs->gs_filename)
- return 0;
+ if(!gs->gs_filename)
+ return 0;
- stop_interpreter(gs);
+ stop_interpreter(gs);
- if(gs->disable_start == TRUE)
- return 0;
+ /* set up the args... */
+ gs_args = g_strsplit (gtk_gs_defaults_get_interpreter_cmd (), " ", NUM_GS_ARGS);
+ for(i = 0; i < NUM_GS_ARGS && gs_args[i]; i++, argc++) {
+ argv[argc] = gs_args[i];
+ }
- /* set up the args... */
- gs_args = g_strsplit(gtk_gs_defaults_get_interpreter_cmd(), " ", NUM_GS_ARGS);
- for(i = 0; i < NUM_GS_ARGS && gs_args[i]; i++, argc++)
- argv[argc] = gs_args[i];
-
- if(gs->antialiased) {
- if(strlen(gtk_gs_defaults_get_alpha_parameters()) == 0)
- alpha_args = g_strsplit(ALPHA_PARAMS, " ", NUM_ALPHA_ARGS);
- else
- alpha_args = g_strsplit(gtk_gs_defaults_get_alpha_parameters(),
- " ", NUM_ALPHA_ARGS);
- for(i = 0; i < NUM_ALPHA_ARGS && alpha_args[i]; i++, argc++)
- argv[argc] = alpha_args[i];
- }
- else
- argv[argc++] = "-sDEVICE=x11";
- argv[argc++] = "-dNOPAUSE";
- argv[argc++] = "-dQUIET";
- /* I assume we do _not_ want to change this... (: */
- argv[argc++] = "-dSAFER";
-
- /* set up the pipes */
- if(gs->send_filename_to_gs) {
- argv[argc++] = PS_DOCUMENT_GET_PS_FILE(gs);
- argv[argc++] = "-c";
- argv[argc++] = "quit";
- }
- else
- argv[argc++] = "-";
+ alpha_args = g_strsplit (ALPHA_PARAMS, " ", NUM_ALPHA_ARGS);
- argv[argc++] = NULL;
+ argv[argc++] = "-dNOPAUSE";
+ argv[argc++] = "-dQUIET";
+ argv[argc++] = "-dSAFER";
- if(!gs->reading_from_pipe && !gs->send_filename_to_gs) {
- if(pipe(std_in) == -1) {
- g_critical("Unable to open pipe to Ghostscript.");
- return -1;
- }
- }
- if(pipe(std_out) == -1) {
- close_pipe(std_in);
- return -1;
- }
- if(pipe(std_err) == -1) {
- close_pipe(std_in);
- close_pipe(std_out);
- return -1;
- }
+ /* set up the pipes */
+ if (gs->send_filename_to_gs) {
+ argv[argc++] = PS_DOCUMENT_GET_PS_FILE (gs);
+ argv[argc++] = "-c";
+ argv[argc++] = "quit";
+ } else {
+ argv[argc++] = "-";
+ }
- gv_env = g_strdup_printf("GHOSTVIEW=%ld %ld",
- gdk_x11_drawable_get_xid(gs->pstarget),
- gdk_x11_drawable_get_xid(gs->bpixmap));
-
- LOG ("Launching ghostview with env %s", gv_env);
-
- gs->busy = TRUE;
- gs->interpreter_pid = fork();
- switch (gs->interpreter_pid) {
- case -1: /* error */
- close_pipe(std_in);
- close_pipe(std_out);
- close_pipe(std_err);
- return -2;
- break;
- case 0: /* child */
- close(std_out[0]);
- dup2(std_out[1], 1);
- close(std_out[1]);
-
- close(std_err[0]);
- dup2(std_err[1], 2);
- close(std_err[1]);
-
- if(!gs->reading_from_pipe) {
- if(gs->send_filename_to_gs) {
- int stdinfd;
- /* just in case gs tries to read from stdin */
- stdinfd = open("/dev/null", O_RDONLY);
- if(stdinfd != 0) {
- dup2(stdinfd, 0);
- close(stdinfd);
- }
- }
- else {
- close(std_in[1]);
- dup2(std_in[0], 0);
- close(std_in[0]);
- }
- }
+ argv[argc++] = NULL;
- putenv(gv_env);
-
- /* change to directory where the input file is. This helps
- * with postscript-files which include other files using
- * a relative path */
- dir = g_path_get_dirname(gs->gs_filename);
- chdir(dir);
- g_free(dir);
-
- execvp(argv[0], argv);
-
- /* Notify error */
- g_print("Unable to execute [%s]\n", argv[0]);
- g_strfreev(gs_args);
- g_free(gv_env);
- if(alpha_args)
- g_strfreev(alpha_args);
- _exit(1);
- break;
- default: /* parent */
- if(!gs->send_filename_to_gs && !gs->reading_from_pipe) {
- int result;
- close(std_in[0]);
- /* use non-blocking IO for pipe to ghostscript */
- result = fcntl(std_in[1], F_GETFL, 0);
- fcntl(std_in[1], F_SETFL, result | O_NONBLOCK);
- gs->interpreter_input = std_in[1];
- }
- else {
- gs->interpreter_input = -1;
- }
- close(std_out[1]);
- gs->interpreter_output = std_out[0];
- close(std_err[1]);
- gs->interpreter_err = std_err[0];
- gs->interpreter_output_id =
- gdk_input_add(std_out[0], GDK_INPUT_READ, output, gs);
- gs->interpreter_error_id =
- gdk_input_add(std_err[0], GDK_INPUT_READ, output, gs);
- break;
- }
- return TRUE;
+ if (!gs->reading_from_pipe && !gs->send_filename_to_gs) {
+ if (pipe (std_in) == -1) {
+ g_critical ("Unable to open pipe to Ghostscript.");
+ return -1;
+ }
+ }
+
+ if (pipe (std_out) == -1) {
+ close_pipe (std_in);
+ return -1;
+ }
+
+ if (pipe(std_err) == -1) {
+ close_pipe (std_in);
+ close_pipe (std_out);
+ return -1;
+ }
+
+ gv_env = g_strdup_printf ("GHOSTVIEW=%ld %ld",
+ gdk_x11_drawable_get_xid (gs->pstarget),
+ gdk_x11_drawable_get_xid (gs->bpixmap));
+ LOG ("Launching ghostview with env %s", gv_env);
+
+ gs->busy = TRUE;
+ gs->interpreter_pid = fork ();
+ switch (gs->interpreter_pid) {
+ case -1: /* error */
+ close_pipe (std_in);
+ close_pipe (std_out);
+ close_pipe (std_err);
+ return -2;
+ break;
+ case 0: /* child */
+ close (std_out[0]);
+ dup2 (std_out[1], 1);
+ close (std_out[1]);
+
+ close (std_err[0]);
+ dup2 (std_err[1], 2);
+ close (std_err[1]);
+
+ if (!gs->reading_from_pipe) {
+ if (gs->send_filename_to_gs) {
+ int stdinfd;
+ /* just in case gs tries to read from stdin */
+ stdinfd = open("/dev/null", O_RDONLY);
+ if (stdinfd != 0) {
+ dup2(stdinfd, 0);
+ close(stdinfd);
+ }
+ } else {
+ close (std_in[1]);
+ dup2 (std_in[0], 0);
+ close (std_in[0]);
+ }
+ }
+
+ putenv(gv_env);
+
+ /* change to directory where the input file is. This helps
+ * with postscript-files which include other files using
+ * a relative path */
+ dir = g_path_get_dirname (gs->gs_filename);
+ chdir (dir);
+ g_free (dir);
+
+ execvp (argv[0], argv);
+
+ /* Notify error */
+ g_critical ("Unable to execute [%s]\n", argv[0]);
+ g_strfreev (gs_args);
+ g_free (gv_env);
+ g_strfreev (alpha_args);
+ _exit (1);
+ break;
+ default: /* parent */
+ if (!gs->send_filename_to_gs && !gs->reading_from_pipe) {
+ int result;
+ close (std_in[0]);
+ /* use non-blocking IO for pipe to ghostscript */
+ result = fcntl (std_in[1], F_GETFL, 0);
+ fcntl (std_in[1], F_SETFL, result | O_NONBLOCK);
+ gs->interpreter_input = std_in[1];
+ } else {
+ gs->interpreter_input = -1;
+ }
+ close (std_out[1]);
+
+ gs->interpreter_output = std_out[0];
+ close (std_err[1]);
+ gs->interpreter_err = std_err[0];
+ gs->interpreter_output_id =
+ gdk_input_add (std_out[0], GDK_INPUT_READ, output, gs);
+ gs->interpreter_error_id =
+ gdk_input_add (std_err[0], GDK_INPUT_READ, output, gs);
+ break;
+ }
+
+ return TRUE;
}
static void
/* report error */
g_snprintf(buf, 1024, _("Error while decompressing file %s:\n"),
gs->gs_filename);
- ps_document_emit_error_msg(gs, buf);
- if(file_length(filename_err) > 0) {
- FILE *err;
- if((err = fopen(filename_err, "r"))) {
- /* print file to message window */
- while(fgets(buf, 1024, err))
- ps_document_emit_error_msg(gs, buf);
- fclose(err);
- }
- }
+ interpreter_failed (gs, buf);
unlink(filename_unc);
g_free(filename_unc);
filename_unc = NULL;
return filename_unc;
}
-#ifdef BROKEN_XINERAMA_PATCH_THAT_SHOULD_NOT_BE_USED
-/* never mind this patch: a properly working X server should take care of
- calculating the proper values. */
-static float
-compute_xdpi(void)
-{
-# ifndef HAVE_XINERAMA
- return 25.4 * gdk_screen_width() / gdk_screen_width_mm();
-# else
- Display *dpy;
- dpy = (Display *) GDK_DISPLAY();
- if(XineramaIsActive(dpy)) {
- int num_heads;
- XineramaScreenInfo *head_info;
- head_info = (XineramaScreenInfo *) XineramaQueryScreens(dpy, &num_heads);
- /* fake it with dimensions of the first head for now */
- return 25.4 * head_info[0].width / gdk_screen_width_mm();
- }
- else {
- return 25.4 * gdk_screen_width() / gdk_screen_width_mm();
- }
-# endif
- /* HAVE_XINERAMA */
-}
-
-static float
-compute_ydpi(void)
-{
-# ifndef HAVE_XINERAMA
- return 25.4 * gdk_screen_height() / gdk_screen_height_mm();
-# else
- Display *dpy;
- dpy = (Display *) GDK_DISPLAY();
- if(XineramaIsActive(dpy)) {
- int num_heads;
- XineramaScreenInfo *head_info;
- head_info = (XineramaScreenInfo *) XineramaQueryScreens(dpy, &num_heads);
- /* fake it with dimensions of the first head for now */
- return 25.4 * head_info[0].height / gdk_screen_height_mm();
- }
- else {
- return 25.4 * gdk_screen_height() / gdk_screen_height_mm();
- }
-# endif
- /* HAVE_XINERAMA */
-}
-#else
-static float
-compute_xdpi(void)
-{
- return 25.4 * gdk_screen_width() / gdk_screen_width_mm();
-}
-
-static float
-compute_ydpi(void)
+static void
+compute_dimensions (PSDocument *gs, int page)
{
- return 25.4 * gdk_screen_height() / gdk_screen_height_mm();
-}
-#endif /* BROKEN_XINERAMA_PATCH_THAT_SHOULD_NOT_BE_USED */
+ GtkGSPaperSize *paper_sizes = gtk_gs_defaults_get_paper_sizes ();
+ int urx, ury, llx, lly;
+ int width, height;
+ int orientation;
+
+ g_return_if_fail (PS_IS_DOCUMENT (gs));
+ g_return_if_fail (gs->doc != NULL);
+ g_return_if_fail (page >= 0);
+ g_return_if_fail (gs->doc->numpages > page);
+
+ orientation = GTK_GS_ORIENTATION_NONE;
+ if (gs->structured_doc) {
+ orientation = gs->doc->pages[gs->current_page].orientation;
+ }
+ if (orientation == GTK_GS_ORIENTATION_NONE) {
+ orientation = GTK_GS_ORIENTATION_PORTRAIT;
+ }
-/* Compute new size of window, sets xdpi and ydpi if necessary.
- * returns True if new window size is different */
-static gboolean
-compute_size(PSDocument * gs)
-{
- guint new_width = 1;
- guint new_height = 1;
- gboolean change = FALSE;
- gint orientation;
-
- /* width and height can be changed, calculate window size according */
- /* to xpdi and ydpi */
- orientation = ps_document_get_orientation(gs);
-
- switch (orientation) {
- case GTK_GS_ORIENTATION_PORTRAIT:
- case GTK_GS_ORIENTATION_UPSIDEDOWN:
- new_width = (gs->urx - gs->llx) / 72.0 * gs->xdpi + 0.5;
- new_height = (gs->ury - gs->lly) / 72.0 * gs->ydpi + 0.5;
- break;
- case GTK_GS_ORIENTATION_LANDSCAPE:
- case GTK_GS_ORIENTATION_SEASCAPE:
- new_width = (gs->ury - gs->lly) / 72.0 * gs->xdpi + 0.5;
- new_height = (gs->urx - gs->llx) / 72.0 * gs->ydpi + 0.5;
- break;
- }
+ if (gs->doc->pages && gs->doc->pages[page].size) {
+ int page_size;
+
+ page_size = gs->doc->pages[page].size - gs->doc->size;
+ llx = lly = 0;
+ urx = gs->doc->size[page_size].width;
+ ury = gs->doc->size[page_size].height;
+ } else if (gs->doc->pages &&
+ (gs->doc->pages[page].boundingbox[URX] >
+ gs->doc->pages[page].boundingbox[LLX]) &&
+ (gs->doc->pages[page].boundingbox[URY] >
+ gs->doc->pages[page].boundingbox[LLY])) {
+ llx = gs->doc->pages[page].boundingbox[LLX];
+ lly = gs->doc->pages[page].boundingbox[LLY];
+ urx = gs->doc->pages[page].boundingbox[URX];
+ ury = gs->doc->pages[page].boundingbox[URY];
+ } else if ((gs->doc->boundingbox[URX] > gs->doc->boundingbox[LLX]) &&
+ (gs->doc->boundingbox[URY] > gs->doc->boundingbox[LLY])) {
+ llx = gs->doc->boundingbox[LLX];
+ lly = gs->doc->boundingbox[LLY];
+ urx = gs->doc->boundingbox[URX];
+ ury = gs->doc->boundingbox[URY];
+ } else {
+ /* Fallback to A4 */
+ llx = lly = 0;
+ urx = paper_sizes[12].width;
+ ury = paper_sizes[12].height;
+ }
- change = (new_width != gs->width * gs->zoom_factor)
- || (new_height != gs->height * gs->zoom_factor);
- gs->width = (gint) (new_width * gs->zoom_factor);
- gs->height = (gint) (new_height * gs->zoom_factor);
+ switch (orientation) {
+ case GTK_GS_ORIENTATION_PORTRAIT:
+ case GTK_GS_ORIENTATION_UPSIDEDOWN:
+ width = (urx - llx) / 72.0 * get_xdpi (gs) + 0.5;
+ height = (ury - lly) / 72.0 * get_ydpi (gs) + 0.5;
+ break;
+ case GTK_GS_ORIENTATION_LANDSCAPE:
+ case GTK_GS_ORIENTATION_SEASCAPE:
+ width = (ury - lly) / 72.0 * get_xdpi (gs) + 0.5;
+ height = (urx - llx) / 72.0 * get_ydpi (gs) + 0.5;
+ break;
+ default:
+ width = height = 0;
+ g_assert_not_reached ();
+ break;
+ }
- return (change);
+ width = width * gs->zoom_factor;
+ height = height * gs->zoom_factor;
+
+ if (llx != gs->llx || lly != gs->lly ||
+ urx != gs->urx || ury != gs->ury ||
+ gs->width != width || gs->height != height ||
+ orientation != gs->orientation) {
+ gs->llx = llx;
+ gs->lly = lly;
+ gs->urx = urx;
+ gs->ury = ury;
+ gs->width = width;
+ gs->height = height;
+ gs->orientation = orientation;
+ gs->changed = TRUE;
+ }
}
static gint
ps_document_enable_interpreter(PSDocument * gs)
{
g_return_val_if_fail(gs != NULL, FALSE);
- g_return_val_if_fail(GTK_IS_GS(gs), FALSE);
+ g_return_val_if_fail(PS_IS_DOCUMENT(gs), FALSE);
if(!gs->gs_filename)
return 0;
- gs->disable_start = FALSE;
-
return start_interpreter(gs);
}
}
-/*
- * Show error message -> send signal "interpreter_message"
- */
-static void
-ps_document_emit_error_msg(PSDocument * gs, const gchar * msg)
-{
- gdk_pointer_ungrab(GDK_CURRENT_TIME);
- if(strstr(msg, "Error:")) {
- gs->gs_status = _("File is not a valid PostScript document.");
- ps_document_cleanup(gs);
- }
-}
-
static gboolean
document_load(PSDocument * gs, const gchar * fname)
{
g_return_val_if_fail(gs != NULL, FALSE);
- g_return_val_if_fail(GTK_IS_GS(gs), FALSE);
+ g_return_val_if_fail(PS_IS_DOCUMENT(gs), FALSE);
LOG ("Load the document");
}
/* prepare this document */
-
- /* default values: no dsc information available */
gs->structured_doc = FALSE;
gs->send_filename_to_gs = TRUE;
gs->current_page = 0;
if(!file_readable(fname)) {
gchar buf[1024];
g_snprintf(buf, 1024, _("Cannot open file %s.\n"), fname);
- ps_document_emit_error_msg(gs, buf);
+ interpreter_failed (gs, buf);
gs->gs_status = _("File is not readable.");
}
else {
}
if(!filename || (gs->gs_psfile = fopen(filename, "r")) == NULL) {
+ interpreter_failed (gs, NULL);
ps_document_cleanup(gs);
return FALSE;
}
/* we grab the vital statistics!!! */
- gs->doc = psscan(gs->gs_psfile, gs->respect_eof, filename);
+ gs->doc = psscan(gs->gs_psfile, TRUE, filename);
g_object_notify (G_OBJECT (gs), "title");
/* File does not seem to be a Postscript one */
gchar buf[1024];
g_snprintf(buf, 1024, _("Error while scanning file %s\n"), fname);
- ps_document_emit_error_msg(gs, buf);
+ interpreter_failed (gs, buf);
ps_document_cleanup(gs);
gs->gs_status = _("The file is not a PostScript document.");
return FALSE;
gs->structured_doc = TRUE;
gs->send_filename_to_gs = FALSE;
}
-
- /* We have to set up the orientation of the document */
- gs->real_orientation = gs->doc->orientation;
}
- ps_document_set_page_size(gs, -1, gs->current_page);
gs->loaded = TRUE;
+ compute_dimensions (gs, gs->current_page);
gs->gs_status = _("Document loaded.");
static gboolean
-ps_document_next_page(PSDocument * gs)
+ps_document_next_page (PSDocument *gs)
{
- XEvent event;
-
- LOG ("Make ghostscript render next page");
-
- g_return_val_if_fail(gs != NULL, FALSE);
- g_return_val_if_fail(GTK_IS_GS(gs), FALSE);
-
- if(gs->interpreter_pid == 0) { /* no interpreter active */
- return FALSE;
- }
-
- if(gs->busy) { /* interpreter is busy */
- return FALSE;
- }
-
- gs->busy = TRUE;
-
- event.xclient.type = ClientMessage;
- event.xclient.display = gdk_display;
- event.xclient.window = gs->message_window;
- event.xclient.message_type = gdk_x11_atom_to_xatom(gs_class->next_atom);
- event.xclient.format = 32;
-
- gdk_error_trap_push();
- XSendEvent(gdk_display, gs->message_window, FALSE, 0, &event);
- gdk_flush();
- gdk_error_trap_pop();
-
- return TRUE;
-}
-
-static gboolean
-ps_document_goto_page(PSDocument * gs, gint page)
-{
- g_return_val_if_fail(gs != NULL, FALSE);
- g_return_val_if_fail(GTK_IS_GS(gs), FALSE);
-
- LOG ("Go to page %d", page);
-
- if(!gs->gs_filename) {
- return FALSE;
- }
-
- /* range checking... */
- if(page < 0)
- page = 0;
-
- if(gs->structured_doc && gs->doc) {
-
- LOG ("It's a structured document, let's send one page to gs");
-
- if(page >= gs->doc->numpages)
- page = gs->doc->numpages - 1;
-
- if(page == gs->current_page && !gs->changed)
- return TRUE;
-
- gs->current_page = page;
-
- if(gs->doc->pages[page].orientation != NONE &&
- gs->doc->pages[page].orientation != gs->real_orientation) {
- gs->real_orientation = gs->doc->pages[page].orientation;
- gs->changed = TRUE;
- }
-
- ps_document_set_page_size(gs, -1, page);
+ XEvent event;
- gs->changed = FALSE;
+ LOG ("Make ghostscript render next page");
- if(is_interpreter_ready(gs)) {
- ps_document_next_page(gs);
- }
- else {
- ps_document_enable_interpreter(gs);
- send_ps(gs, gs->doc->beginprolog, gs->doc->lenprolog, FALSE);
- send_ps(gs, gs->doc->beginsetup, gs->doc->lensetup, FALSE);
- }
+ g_return_val_if_fail (PS_IS_DOCUMENT(gs), FALSE);
+ g_return_val_if_fail (gs->interpreter_pid != 0, FALSE);
+ g_return_val_if_fail (gs->busy != TRUE, FALSE);
- send_ps(gs, gs->doc->pages[gs->current_page].begin,
- gs->doc->pages[gs->current_page].len, FALSE);
- }
- else {
- /* Unstructured document */
- /* In the case of non structured documents,
- GS read the PS from the actual file (via command
- line. Hence, ggv only send a signal next page.
- If ghostview is not running it is usually because
- the last page of the file was displayed. In that
- case, ggv restarts GS again and the first page is displayed.
- */
+ gs->busy = TRUE;
- LOG ("It's an unstructured document, gs will just read the file");
+ event.xclient.type = ClientMessage;
+ event.xclient.display = gdk_display;
+ event.xclient.window = gs->message_window;
+ event.xclient.message_type = gdk_x11_atom_to_xatom(gs_class->next_atom);
+ event.xclient.format = 32;
- if(page == gs->current_page && !gs->changed)
- return TRUE;
+ gdk_error_trap_push ();
+ XSendEvent (gdk_display, gs->message_window, FALSE, 0, &event);
+ gdk_flush ();
+ gdk_error_trap_pop ();
- ps_document_set_page_size(gs, -1, page);
-
- if(!is_interpreter_ready(gs))
- ps_document_enable_interpreter(gs);
-
- gs->current_page = page;
-
- ps_document_next_page(gs);
- }
- return TRUE;
+ return TRUE;
}
-/*
- * set pagesize sets the size from
- * if new_pagesize is -1, then it is set to either
- * a) the default settings of pageid, if they exist, or if pageid != -1.
- * b) the default setting of the document, if it exists.
- * c) the default setting of the widget.
- * otherwise, the new_pagesize is used as the pagesize
- */
static gboolean
-ps_document_set_page_size(PSDocument * gs, gint new_pagesize, gint pageid)
+render_page (PSDocument *gs)
{
- gint new_llx = 0;
- gint new_lly = 0;
- gint new_urx = 0;
- gint new_ury = 0;
- GtkGSPaperSize *papersizes = gtk_gs_defaults_get_paper_sizes();
-
- LOG ("Set the page size");
-
- g_return_val_if_fail(gs != NULL, FALSE);
- g_return_val_if_fail(GTK_IS_GS(gs), FALSE);
-
- if(new_pagesize == -1) {
- if(gs->default_size > 0)
- new_pagesize = gs->default_size;
- if(gs->doc) {
- /* If we have a document:
- We use -- the page size (if specified)
- or the doc. size (if specified)
- or the page bbox (if specified)
- or the bounding box
- */
- if((pageid >= 0) && (gs->doc->numpages > pageid) &&
- (gs->doc->pages) && (gs->doc->pages[pageid].size)) {
- new_pagesize = gs->doc->pages[pageid].size - gs->doc->size;
- }
- else if(gs->doc->default_page_size != NULL) {
- new_pagesize = gs->doc->default_page_size - gs->doc->size;
- }
- else if((pageid >= 0) &&
- (gs->doc->numpages > pageid) &&
- (gs->doc->pages) &&
- (gs->doc->pages[pageid].boundingbox[URX] >
- gs->doc->pages[pageid].boundingbox[LLX]) &&
- (gs->doc->pages[pageid].boundingbox[URY] >
- gs->doc->pages[pageid].boundingbox[LLY])) {
- new_pagesize = -1;
- }
- else if((gs->doc->boundingbox[URX] > gs->doc->boundingbox[LLX]) &&
- (gs->doc->boundingbox[URY] > gs->doc->boundingbox[LLY])) {
- new_pagesize = -1;
- }
- }
- }
+ g_return_val_if_fail(gs != NULL, FALSE);
+ g_return_val_if_fail(PS_IS_DOCUMENT(gs), FALSE);
- /* Compute bounding box */
- if(gs->doc && (gs->doc->epsf || new_pagesize == -1)) { /* epsf or bbox */
- if((pageid >= 0) &&
- (gs->doc->pages) &&
- (gs->doc->pages[pageid].boundingbox[URX] >
- gs->doc->pages[pageid].boundingbox[LLX])
- && (gs->doc->pages[pageid].boundingbox[URY] >
- gs->doc->pages[pageid].boundingbox[LLY])) {
- /* use page bbox */
- new_llx = gs->doc->pages[pageid].boundingbox[LLX];
- new_lly = gs->doc->pages[pageid].boundingbox[LLY];
- new_urx = gs->doc->pages[pageid].boundingbox[URX];
- new_ury = gs->doc->pages[pageid].boundingbox[URY];
- }
- else if((gs->doc->boundingbox[URX] > gs->doc->boundingbox[LLX]) &&
- (gs->doc->boundingbox[URY] > gs->doc->boundingbox[LLY])) {
- /* use doc bbox */
- new_llx = gs->doc->boundingbox[LLX];
- new_lly = gs->doc->boundingbox[LLY];
- new_urx = gs->doc->boundingbox[URX];
- new_ury = gs->doc->boundingbox[URY];
- }
- }
- else {
- if(new_pagesize < 0)
- new_pagesize = gs->default_size;
- new_llx = new_lly = 0;
- if(gs->doc && gs->doc->size &&
- (new_pagesize < gs->doc->numsizes)) {
- new_urx = gs->doc->size[new_pagesize].width;
- new_ury = gs->doc->size[new_pagesize].height;
- }
- else {
- new_urx = papersizes[new_pagesize].width;
- new_ury = papersizes[new_pagesize].height;
- }
- }
-
- if(new_urx <= new_llx)
- new_urx = papersizes[12].width;
- if(new_ury <= new_lly)
- new_ury = papersizes[12].height;
-
- /* If bounding box changed, setup for new size. */
- /* ps_document_disable_interpreter (gs); */
- if((new_llx != gs->llx) || (new_lly != gs->lly) ||
- (new_urx != gs->urx) || (new_ury != gs->ury)) {
- gs->llx = new_llx;
- gs->lly = new_lly;
- gs->urx = new_urx;
- gs->ury = new_ury;
- gs->changed = TRUE;
- }
-
- if(gs->changed) {
- set_up_page(gs);
- return TRUE;
- }
+ if(!gs->gs_filename) {
+ return FALSE;
+ }
- return FALSE;
-}
+ if (gs->structured_doc && gs->doc) {
+ LOG ("It's a structured document, let's send one page to gs");
-static void
-ps_document_set_zoom (PSDocument * gs, gfloat zoom)
-{
- g_return_if_fail (gs != NULL);
-
- gs->zoom_factor = zoom;
+ if (is_interpreter_ready (gs)) {
+ ps_document_next_page (gs);
+ } else {
+ ps_document_enable_interpreter (gs);
+ send_ps (gs, gs->doc->beginprolog, gs->doc->lenprolog, FALSE);
+ send_ps (gs, gs->doc->beginsetup, gs->doc->lensetup, FALSE);
+ }
- if (gs->pstarget != NULL) {
- set_up_page(gs);
- gs->changed = TRUE;
- gs->scaling = TRUE;
- ps_document_goto_page (gs, gs->current_page);
+ send_ps (gs, gs->doc->pages[gs->current_page].begin,
+ gs->doc->pages[gs->current_page].len, FALSE);
+ } else {
+ /* Unstructured document
+ *
+ * In the case of non structured documents,
+ * GS read the PS from the actual file (via command
+ * line. Hence, ggv only send a signal next page.
+ * If ghostview is not running it is usually because
+ * the last page of the file was displayed. In that
+ * case, ggv restarts GS again and the first page is displayed.
+ */
+
+ LOG ("It's an unstructured document, gs will just read the file");
+
+ if (!is_interpreter_ready (gs)) {
+ ps_document_enable_interpreter(gs);
+ }
+ ps_document_next_page(gs);
}
+
+ return TRUE;
}
static gboolean
ps_document_set_page (EvDocument *document,
int page)
{
- ps_document_goto_page (PS_DOCUMENT (document), page - 1);
+ PSDocument *gs = PS_DOCUMENT (document);
+
+ LOG ("Set document page %d\n", page);
+
+ gs->current_page = page - 1;
+ compute_dimensions (gs, page);
}
static int
ps_document_set_scale (EvDocument *document,
double scale)
{
- ps_document_set_zoom (PS_DOCUMENT (document), scale);
+ PSDocument *gs = PS_DOCUMENT (document);
+
+ gs->zoom_factor = scale;
+ compute_dimensions (gs, gs->current_page);
}
static void
}
}
-static void
-ps_document_render (EvDocument *document,
- int clip_x,
- int clip_y,
- int clip_width,
- int clip_height)
-{
- PSDocument *gs = PS_DOCUMENT (document);
- GdkRectangle page;
- GdkRectangle draw;
- GdkGC *gc;
-
- if (gs->pstarget == NULL ||
- gs->bpixmap == NULL) {
- return;
- }
-
- page.x = gs->page_x_offset;
- page.y = gs->page_y_offset;
- page.width = gs->width;
- page.height = gs->height;
-
- draw.x = clip_x;
- draw.y = clip_y;
- draw.width = clip_width;
- draw.height = clip_height;
-
- gc = gdk_gc_new (gs->pstarget);
-
- gdk_draw_drawable (gs->pstarget, gc,
- gs->bpixmap,
- draw.x - page.x, draw.y - page.y,
- draw.x, draw.y,
- draw.width, draw.height);
-
- LOG ("Copy the internal pixmap: %d %d %d %d %d %d",
- draw.x - page.x, draw.y - page.y,
- draw.x, draw.y, draw.width, draw.height);
-
- g_object_unref (gc);
-}
-
static char *
ps_document_get_text (EvDocument *document, GdkRectangle *rect)
{
return NULL;
}
+static gboolean
+render_pixbuf_idle (EvDocument *document)
+{
+ PSDocument *gs = PS_DOCUMENT (document);
+
+ if (gs->pstarget == NULL) {
+ GtkWidget *widget;
+
+ widget = gtk_window_new (GTK_WINDOW_POPUP);
+ gtk_widget_realize (widget);
+ gs->pstarget = widget->window;
+
+ g_assert (gs->pstarget != NULL);
+
+ g_signal_connect (widget, "event",
+ G_CALLBACK (ps_document_widget_event),
+ gs);
+ }
+
+ if (gs->changed) {
+ stop_interpreter (gs);
+ setup_pixmap (gs);
+ setup_page (gs);
+ gs->changed = FALSE;
+ }
+
+ render_page (PS_DOCUMENT (document));
+
+ return FALSE;
+}
+
+static GdkPixbuf *
+ps_document_render_pixbuf (EvDocument *document)
+{
+ GdkPixbuf *pixbuf;
+
+ g_idle_add ((GSourceFunc)render_pixbuf_idle, document);
+
+ g_mutex_lock (pixbuf_mutex);
+ while (!current_pixbuf)
+ g_cond_wait (pixbuf_cond, pixbuf_mutex);
+ pixbuf = current_pixbuf;
+ current_pixbuf = NULL;
+ g_mutex_unlock (pixbuf_mutex);
+
+ LOG ("Pixbuf rendered %p\n", pixbuf);
+
+ return pixbuf;
+}
+
static void
ps_document_document_iface_init (EvDocumentIface *iface)
{
iface->set_page = ps_document_set_page;
iface->get_page = ps_document_get_page;
iface->set_scale = ps_document_set_scale;
- iface->set_target = ps_document_set_target;
iface->set_page_offset = ps_document_set_page_offset;
iface->get_page_size = ps_document_get_page_size;
- iface->render = ps_document_render;
+ iface->render_pixbuf = ps_document_render_pixbuf;
}
https://www.fi.muni.cz/~kas/git / evince.git / blobdiff