![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
index aa6434baec66e555c0114c9582c3c3f66b395797..754372f23b35e40b22d22c2d2961c0a96090dac4 100644 (file)
--- a/src/helper/png-write.cpp
+++ b/src/helper/png-write.cpp
#include <interface.h>
#include <libnr/nr-pixops.h>
#include <libnr/nr-translate-scale-ops.h>
+#include <2geom/rect.h>
#include <glib/gmessages.h>
#include <png.h>
#include "png-write.h"
#include <sp-item.h>
#include <sp-root.h>
#include <sp-defs.h>
-#include "prefs-utils.h"
-#include "dialogs/rdf.h"
+#include "preferences.h"
+#include "rdf.h"
/* This is an example of how to use libpng to read and write PNG files.
* The file libpng.txt is much more verbose then this. If you have not
png_uint_32 r;
g_return_val_if_fail(filename != NULL, false);
+ g_return_val_if_fail(data != NULL, false);
/* open the file */
}
} else {
g_warning("Unable to find entity [%s]", pngToDc[i + 1]);
- }
+ }
}
bbox.y1 = row + num_rows;
/* Update to renderable state */
NRGC gc(NULL);
- gc.transform.set_identity();
+ gc.transform.setIdentity();
nr_arena_item_invoke_update(ebp->root, &bbox, &gc,
NR_ARENA_ITEM_STATE_ALL, NR_ARENA_ITEM_STATE_NONE);
*
* \return true if succeeded (or if no action was taken), false if an error occurred.
*/
+bool sp_export_png_file (SPDocument *doc, gchar const *filename,
+ double x0, double y0, double x1, double y1,
+ unsigned long int width, unsigned long int height, double xdpi, double ydpi,
+ unsigned long bgcolor,
+ unsigned int (*status) (float, void *),
+ void *data, bool force_overwrite,
+ GSList *items_only)
+{
+ return sp_export_png_file(doc, filename, Geom::Rect(Geom::Point(x0,y0),Geom::Point(x1,y1)),
+ width, height, xdpi, ydpi, bgcolor, status, data, force_overwrite, items_only);
+}
bool
sp_export_png_file(SPDocument *doc, gchar const *filename,
- double x0, double y0, double x1, double y1,
+ Geom::Rect const &area,
unsigned long width, unsigned long height, double xdpi, double ydpi,
unsigned long bgcolor,
unsigned (*status)(float, void *),
g_return_val_if_fail(filename != NULL, false);
g_return_val_if_fail(width >= 1, false);
g_return_val_if_fail(height >= 1, false);
+ g_return_val_if_fail(!area.hasZeroArea(), false);
if (!force_overwrite && !sp_ui_overwrite_file(filename)) {
/* Remark: We return true so as not to invoke an error dialog in case export is cancelled
return true;
}
- // export with maximum blur rendering quality
- int saved_quality = prefs_get_int_attribute("options.blurquality", "value", 0);
- prefs_set_int_attribute("options.blurquality", "value", 2);
-
sp_document_ensure_up_to_date(doc);
- /* Go to document coordinates */
- {
- gdouble const t = y0;
- y0 = sp_document_height(doc) - y1;
- y1 = sp_document_height(doc) - t;
- }
+ /* Calculate translation by transforming to document coordinates (flipping Y)*/
+ Geom::Point translation = Geom::Point(-area[Geom::X][0], area[Geom::Y][1] - sp_document_height(doc));
- /*
+ /* This calculation is only valid when assumed that (x0,y0)= area.corner(0) and (x1,y1) = area.corner(2)
* 1) a[0] * x0 + a[2] * y1 + a[4] = 0.0
* 2) a[1] * x0 + a[3] * y1 + a[5] = 0.0
* 3) a[0] * x1 + a[2] * y1 + a[4] = width
* (2) a[5] = -a[3] * y1
*/
- Geom::Matrix const affine(Geom::Translate(-x0, -y0)
- * Geom::Scale(width / (x1 - x0),
- height / (y1 - y0)));
+ Geom::Matrix const affine(Geom::Translate(translation)
+ * Geom::Scale(width / area.width(),
+ height / area.height()));
//SP_PRINT_MATRIX("SVG2PNG", &affine);
/* Create new arena */
NRArena *const arena = NRArena::create();
+ // export with maximum blur rendering quality
+ nr_arena_set_renderoffscreen(arena);
unsigned const dkey = sp_item_display_key_new(1);
/* Create ArenaItems and set transform */
write_status = sp_png_write_rgba_striped(doc, filename, width, height, xdpi, ydpi, sp_export_get_rows, &ebp);
nr_pixelstore_64K_free(ebp.px);
} else {
- ebp.px = g_new(guchar, 4 * 64 * width);
ebp.sheight = 64;
+ ebp.px = g_try_new(guchar, 4 * ebp.sheight * width);
write_status = sp_png_write_rgba_striped(doc, filename, width, height, xdpi, ydpi, sp_export_get_rows, &ebp);
g_free(ebp.px);
}
/* Free arena */
nr_object_unref((NRObject *) arena);
- // restore saved blur quality
- prefs_set_int_attribute("options.blurquality", "value", saved_quality);
-
return write_status;
}
fill-column:99
End:
*/
-// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :