/* FIXME: Should probably buffer calls to libtiff with TIFFSetWarningHandler
*/
+#include "config.h"
+
+#include <config.h>
#include <stdio.h>
#include <glib.h>
+#include <glib/gi18n.h>
#include "tiffio.h"
#include "tiff2ps.h"
#include "ev-document-misc.h"
#include "ev-document-thumbnails.h"
#include "ev-file-exporter.h"
+#include "ev-file-helpers.h"
struct _TiffDocumentClass
{
static void tiff_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
static void tiff_document_document_file_exporter_iface_init (EvFileExporterIface *iface);
-G_DEFINE_TYPE_WITH_CODE (TiffDocument, tiff_document, G_TYPE_OBJECT,
- { G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,
- tiff_document_document_iface_init);
+EV_BACKEND_REGISTER_WITH_CODE (TiffDocument, tiff_document,
+ {
G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
tiff_document_document_thumbnails_iface_init);
G_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER,
return tiff_document->n_pages;
}
+static void
+tiff_document_get_resolution (TiffDocument *tiff_document,
+ gfloat *x_res,
+ gfloat *y_res)
+{
+ gfloat x = 72.0, y = 72.0;
+ gushort unit;
+
+ if (TIFFGetField (tiff_document->tiff, TIFFTAG_XRESOLUTION, &x) &&
+ TIFFGetField (tiff_document->tiff, TIFFTAG_YRESOLUTION, &y)) {
+ if (TIFFGetFieldDefaulted (tiff_document->tiff, TIFFTAG_RESOLUTIONUNIT, &unit)) {
+ if (unit == RESUNIT_CENTIMETER) {
+ x *= 2.54;
+ y *= 2.54;
+ }
+ }
+ }
+
+ *x_res = x;
+ *y_res = y;
+}
+
static void
tiff_document_get_page_size (EvDocument *document,
int page,
TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGEWIDTH, &w);
TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGELENGTH, &h);
- TIFFGetField (tiff_document->tiff, TIFFTAG_XRESOLUTION, &x_res);
- TIFFGetField (tiff_document->tiff, TIFFTAG_YRESOLUTION, &y_res);
+ tiff_document_get_resolution (tiff_document, &x_res, &y_res);
h = h * (x_res / y_res);
*width = w;
pop_handlers ();
}
-static GdkPixbuf *
-tiff_document_render_pixbuf (EvDocument *document,
- EvRenderContext *rc)
+static cairo_surface_t *
+tiff_document_render (EvDocument *document,
+ EvRenderContext *rc)
{
TiffDocument *tiff_document = TIFF_DOCUMENT (document);
int width, height;
float x_res, y_res;
gint rowstride, bytes;
guchar *pixels = NULL;
- GdkPixbuf *pixbuf;
- GdkPixbuf *scaled_pixbuf;
- GdkPixbuf *rotated_pixbuf;
+ guchar *p;
+ cairo_surface_t *surface;
+ cairo_surface_t *rotated_surface;
+ static const cairo_user_data_key_t key;
g_return_val_if_fail (TIFF_IS_DOCUMENT (document), NULL);
g_return_val_if_fail (tiff_document->tiff != NULL, NULL);
return NULL;
}
- if (!TIFFGetField (tiff_document->tiff, TIFFTAG_XRESOLUTION, &x_res)) {
+ tiff_document_get_resolution (tiff_document, &x_res, &y_res);
+
+ pop_handlers ();
+
+ /* Sanity check the doc */
+ if (width <= 0 || height <= 0)
+ return NULL;
+
+ rowstride = width * 4;
+ if (rowstride / 4 != width)
+ /* overflow */
+ return NULL;
+
+ bytes = height * rowstride;
+ if (bytes / rowstride != height)
+ /* overflow */
+ return NULL;
+
+ pixels = g_try_malloc (bytes);
+ if (!pixels)
+ return NULL;
+
+ surface = cairo_image_surface_create_for_data (pixels,
+ CAIRO_FORMAT_RGB24,
+ width, height,
+ rowstride);
+ cairo_surface_set_user_data (surface, &key,
+ pixels, (cairo_destroy_func_t)g_free);
+
+ TIFFReadRGBAImageOriented (tiff_document->tiff,
+ width, height,
+ (uint32 *)pixels,
+ ORIENTATION_TOPLEFT, 1);
+ pop_handlers ();
+
+ /* Convert the format returned by libtiff to
+ * what cairo expects
+ */
+ p = pixels;
+ while (p < pixels + bytes) {
+ uint32 pixel = *(uint32 *)p;
+ int r = TIFFGetR(pixel);
+ int g = TIFFGetG(pixel);
+ int b = TIFFGetB(pixel);
+ int a = TIFFGetA(pixel);
+
+ *p++ = b;
+ *p++ = g;
+ *p++ = r;
+ *p++ = a;
+ }
+
+ rotated_surface = ev_document_misc_surface_rotate_and_scale (surface,
+ (width * rc->scale) + 0.5,
+ (height * rc->scale * (x_res / y_res)) + 0.5,
+ rc->rotation);
+ cairo_surface_destroy (surface);
+
+ return rotated_surface;
+}
+
+static GdkPixbuf *
+tiff_document_render_pixbuf (EvDocument *document,
+ EvRenderContext *rc)
+{
+ TiffDocument *tiff_document = TIFF_DOCUMENT (document);
+ int width, height;
+ float x_res, y_res;
+ gint rowstride, bytes;
+ guchar *pixels = NULL;
+ GdkPixbuf *pixbuf;
+ GdkPixbuf *scaled_pixbuf;
+ GdkPixbuf *rotated_pixbuf;
+
+ push_handlers ();
+ if (TIFFSetDirectory (tiff_document->tiff, rc->page) != 1) {
pop_handlers ();
return NULL;
}
- if (! TIFFGetField (tiff_document->tiff, TIFFTAG_YRESOLUTION, &y_res)) {
+ if (!TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGEWIDTH, &width)) {
pop_handlers ();
return NULL;
}
+ if (! TIFFGetField (tiff_document->tiff, TIFFTAG_IMAGELENGTH, &height)) {
+ pop_handlers ();
+ return NULL;
+ }
+
+ tiff_document_get_resolution (tiff_document, &x_res, &y_res);
+
pop_handlers ();
/* Sanity check the doc */
if (width <= 0 || height <= 0)
return NULL;
-
+
rowstride = width * 4;
if (rowstride / 4 != width)
/* overflow */
pixbuf = gdk_pixbuf_new_from_data (pixels, GDK_COLORSPACE_RGB, TRUE, 8,
width, height, rowstride,
(GdkPixbufDestroyNotify) g_free, NULL);
-
- pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, width, height);
- TIFFReadRGBAImageOriented (tiff_document->tiff, width, height, (uint32 *)gdk_pixbuf_get_pixels (pixbuf), ORIENTATION_TOPLEFT, 1);
+ TIFFReadRGBAImageOriented (tiff_document->tiff,
+ width, height,
+ (uint32 *)pixels,
+ ORIENTATION_TOPLEFT, 1);
pop_handlers ();
-
+
scaled_pixbuf = gdk_pixbuf_scale_simple (pixbuf,
width * rc->scale,
- height * rc->scale * (x_res/y_res),
+ height * rc->scale * (x_res / y_res),
GDK_INTERP_BILINEAR);
g_object_unref (pixbuf);
gobject_class->finalize = tiff_document_finalize;
}
-static gboolean
-tiff_document_can_get_text (EvDocument *document)
-{
- return FALSE;
-}
-
static EvDocumentInfo *
tiff_document_get_info (EvDocument *document)
{
{
iface->load = tiff_document_load;
iface->save = tiff_document_save;
- iface->can_get_text = tiff_document_can_get_text;
iface->get_n_pages = tiff_document_get_n_pages;
iface->get_page_size = tiff_document_get_page_size;
- iface->render_pixbuf = tiff_document_render_pixbuf;
+ iface->render = tiff_document_render;
iface->get_info = tiff_document_get_info;
}
}
/* postscript exporter implementation */
-
-static gboolean
-tiff_document_file_exporter_format_supported (EvFileExporter *exporter,
- EvFileExporterFormat format)
-{
- return (format == EV_FILE_FORMAT_PS);
-}
-
static void
-tiff_document_file_exporter_begin (EvFileExporter *exporter,
- EvFileExporterFormat format,
- const char *filename,
- int first_page,
- int last_page,
- double width,
- double height,
- gboolean duplex)
+tiff_document_file_exporter_begin (EvFileExporter *exporter,
+ EvFileExporterContext *fc)
{
TiffDocument *document = TIFF_DOCUMENT (exporter);
- document->ps_export_ctx = tiff2ps_context_new(filename);
+ document->ps_export_ctx = tiff2ps_context_new(fc->filename);
}
static void
tiff2ps_context_finalize(document->ps_export_ctx);
}
+static EvFileExporterCapabilities
+tiff_document_file_exporter_get_capabilities (EvFileExporter *exporter)
+{
+ return EV_FILE_EXPORTER_CAN_PAGE_SET |
+ EV_FILE_EXPORTER_CAN_COPIES |
+ EV_FILE_EXPORTER_CAN_COLLATE |
+ EV_FILE_EXPORTER_CAN_REVERSE |
+ EV_FILE_EXPORTER_CAN_GENERATE_PS;
+}
+
static void
tiff_document_document_file_exporter_iface_init (EvFileExporterIface *iface)
{
- iface->format_supported = tiff_document_file_exporter_format_supported;
iface->begin = tiff_document_file_exporter_begin;
iface->do_page = tiff_document_file_exporter_do_page;
iface->end = tiff_document_file_exporter_end;
+ iface->get_capabilities = tiff_document_file_exporter_get_capabilities;
}
static void