Rename pango-view/ dir to utils/

1 files changed, 367 insertions, 0 deletions

diff --git a/utils/viewer-cairo.c b/utils/viewer-cairo.c
new file mode 100644
index 00000000..ca98c1cd
--- /dev/null
+++ b/utils/viewer-cairo.c
@@ -0,0 +1,367 @@
+/* viewer-cairo.c: Common code for Cairo-based viewers
+ *
+ * Copyright (C) 1999,2004,2005 Red Hat, Inc.
+ * Copyright (C) 2001 Sun Microsystems
+ *
+ * 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.
+ */
+#include "config.h"
+
+#include "viewer-cairo.h"
+#include "viewer-render.h"
+
+#include <cairo.h>
+
+#include <string.h>
+
+
+
+#ifdef HAVE_CAIRO_XLIB
+#ifdef HAVE_XFT
+#include "viewer-x.h"
+#include <cairo-xlib.h>
+
+static cairo_surface_t *
+cairo_x_view_iface_create_surface (gpointer instance,
+				   gpointer surface,
+				   int      width,
+				   int      height)
+{
+  XViewer *x = (XViewer *)instance;
+  Drawable drawable = (Drawable) surface;
+
+  return cairo_xlib_surface_create (x->display, drawable,
+				    DefaultVisual (x->display, x->screen),
+				    width, height);
+}
+
+static void
+cairo_x_view_iface_paint_background (gpointer  instance G_GNUC_UNUSED,
+				     cairo_t  *cr)
+{
+  cairo_set_source_rgb (cr, 1, 1, 1);
+  cairo_paint (cr);
+
+  if (opt_bg_set)
+    {
+      cairo_set_source_rgba (cr,
+			     opt_bg_color.red / 65535.,
+			     opt_bg_color.green / 65535.,
+			     opt_bg_color.blue / 65535.,
+			     opt_bg_alpha / 65535.);
+      cairo_paint (cr);
+    }
+}
+
+static CairoViewerIface cairo_x_viewer_iface = {
+  &x_viewer,
+  cairo_x_view_iface_create_surface,
+  cairo_x_view_iface_paint_background
+};
+#endif /* HAVE_XFT */
+#endif /* HAVE_CAIRO_XLIB */
+
+
+
+
+static cairo_surface_t *
+cairo_view_iface_create_surface (gpointer instance,
+				 gpointer surface,
+				 int      width,
+				 int      height)
+{
+  return cairo_surface_reference (surface);
+}
+
+
+
+static gpointer
+cairo_image_view_create (const PangoViewer *klass G_GNUC_UNUSED)
+{
+  return NULL;
+}
+
+static void
+cairo_image_view_destroy (gpointer instance G_GNUC_UNUSED)
+{
+}
+
+static gpointer
+cairo_image_view_create_surface (gpointer instance,
+				 int      width,
+				 int      height)
+{
+  cairo_t *cr;
+  cairo_surface_t *surface;
+
+  /* TODO: Be smarter about format? */
+  surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
+
+  cr = cairo_create (surface);
+  cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
+  cairo_paint (cr);
+  cairo_destroy (cr);
+
+  return surface;
+}
+
+static void
+cairo_image_view_destroy_surface (gpointer instance,
+				  gpointer surface)
+{
+  cairo_surface_destroy (surface);
+}
+
+const PangoViewer cairo_image_viewer = {
+  "CairoImage",
+  NULL,
+  NULL,
+  cairo_image_view_create,
+  cairo_image_view_destroy,
+  NULL,
+  cairo_image_view_create_surface,
+  cairo_image_view_destroy_surface,
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  NULL
+};
+
+static void
+cairo_image_view_iface_paint_background (gpointer  instance G_GNUC_UNUSED,
+					 cairo_t  *cr)
+{
+  cairo_set_source_rgb (cr, 1, 1, 1);
+  cairo_paint (cr);
+
+  if (opt_bg_set)
+    {
+      cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+      cairo_set_source_rgba (cr,
+			     opt_bg_color.red / 65535.,
+			     opt_bg_color.green / 65535.,
+			     opt_bg_color.blue / 65535.,
+			     opt_bg_alpha / 65535.);
+      cairo_paint (cr);
+    }
+}
+
+static CairoViewerIface cairo_image_viewer_iface = {
+  &cairo_image_viewer,
+  cairo_view_iface_create_surface,
+  cairo_image_view_iface_paint_background
+};
+
+
+
+
+#ifdef CAIRO_HAS_SVG_SURFACE
+#    include <cairo-svg.h>
+#endif
+#ifdef CAIRO_HAS_PDF_SURFACE
+#    include <cairo-pdf.h>
+#endif
+#ifdef CAIRO_HAS_PS_SURFACE
+#    include <cairo-ps.h>
+#  if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1,6,0)
+#    define HAS_EPS 1
+
+static cairo_surface_t *
+_cairo_eps_surface_create (const char *filename,
+			   double      width,
+			   double      height)
+{
+  cairo_surface_t *surface;
+
+  surface = cairo_ps_surface_create (filename, width, height);
+  cairo_ps_surface_set_eps (surface, TRUE);
+
+  return surface;
+}
+
+#  else
+#    undef HAS_EPS
+#  endif
+#endif
+
+typedef cairo_surface_t *(*CairoVectorFileCreateFunc) (const char *filename,
+						       double width,
+						       double height);
+
+typedef struct
+{
+  const char *filename;
+  CairoVectorFileCreateFunc constructor;
+} CairoVectorViewer;
+
+static gpointer
+cairo_vector_view_create (const PangoViewer *klass G_GNUC_UNUSED)
+{
+  const char *extension = NULL;
+  CairoVectorFileCreateFunc constructor = NULL;
+
+  if (opt_output)
+    {
+      extension = strrchr (opt_output, '.');
+      if (extension)
+	  extension++; /* skip the dot */
+    }
+
+  if (!extension)
+    return NULL;
+
+  if (0)
+    ;
+  #ifdef CAIRO_HAS_SVG_SURFACE
+    else if (0 == g_ascii_strcasecmp (extension, "svg"))
+      constructor = cairo_svg_surface_create;
+  #endif
+  #ifdef CAIRO_HAS_PDF_SURFACE
+    else if (0 == g_ascii_strcasecmp (extension, "pdf"))
+      constructor = cairo_pdf_surface_create;
+  #endif
+  #ifdef CAIRO_HAS_PS_SURFACE
+    else if (0 == g_ascii_strcasecmp (extension, "ps"))
+      constructor = cairo_ps_surface_create;
+   #ifdef HAS_EPS
+    else if (0 == g_ascii_strcasecmp (extension, "eps"))
+      constructor = _cairo_eps_surface_create;
+   #endif
+  #endif
+
+  if (constructor)
+    {
+      CairoVectorViewer *instance;
+
+      instance = g_slice_new (CairoVectorViewer);
+
+      /* save output filename and unset it such that the viewer layer
+       * doesn't try to save to file.
+       */
+     instance->filename = opt_output;
+     opt_output = NULL;
+
+     instance->constructor = constructor;
+
+     /* Fix dpi on 72.  That's what cairo vector surfaces are. */
+     opt_dpi = 72;
+
+     return instance;
+    }
+
+  return NULL;
+}
+
+static void
+cairo_vector_view_destroy (gpointer instance G_GNUC_UNUSED)
+{
+  CairoVectorViewer *c = (CairoVectorViewer *) instance;
+
+  g_slice_free (CairoVectorViewer, c);
+}
+
+static gpointer
+cairo_vector_view_create_surface (gpointer instance,
+				  int      width,
+				  int      height)
+{
+  CairoVectorViewer *c = (CairoVectorViewer *) instance;
+  cairo_surface_t *surface;
+
+  surface = c->constructor (c->filename, width, height);
+
+    /*cairo_surface_set_fallback_resolution (surface, fallback_resolution_x, fallback_resolution_y);*/
+
+  return surface;
+}
+
+static void
+cairo_vector_view_destroy_surface (gpointer instance,
+				   gpointer surface)
+{
+  /* TODO: check for errors */
+  cairo_surface_destroy (surface);
+}
+
+const PangoViewer cairo_vector_viewer = {
+  "CairoFile",
+  NULL,
+  NULL,
+  cairo_vector_view_create,
+  cairo_vector_view_destroy,
+  NULL,
+  cairo_vector_view_create_surface,
+  cairo_vector_view_destroy_surface,
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  NULL
+};
+
+static void
+cairo_vector_view_iface_paint_background (gpointer  instance G_GNUC_UNUSED,
+					  cairo_t  *cr)
+{
+  if (opt_bg_set)
+    {
+      cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+      cairo_set_source_rgba (cr,
+			     opt_bg_color.red / 65535.,
+			     opt_bg_color.green / 65535.,
+			     opt_bg_color.blue / 65535.,
+			     opt_bg_alpha / 65535.);
+      cairo_paint (cr);
+    }
+}
+
+static CairoViewerIface cairo_vector_viewer_iface = {
+  &cairo_vector_viewer,
+  cairo_view_iface_create_surface,
+  cairo_vector_view_iface_paint_background
+};
+
+
+
+gpointer
+cairo_viewer_iface_create (const CairoViewerIface **iface)
+{
+  gpointer ret;
+
+  *iface = &cairo_vector_viewer_iface;
+  ret = (*iface)->backend_class->create ((*iface)->backend_class);
+  if (ret)
+    return ret;
+
+#ifdef HAVE_CAIRO_XLIB
+#ifdef HAVE_XFT
+  if (opt_display)
+    {
+      *iface = &cairo_x_viewer_iface;
+      return (*iface)->backend_class->create ((*iface)->backend_class);
+    }
+#endif /* HAVE_XFT */
+#endif /* HAVE_CAIRO_XLIB */
+
+  *iface = &cairo_image_viewer_iface;
+  return (*iface)->backend_class->create ((*iface)->backend_class);
+}
+
+void
+cairo_viewer_add_options (GOptionGroup *group G_GNUC_UNUSED)
+{
+}