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  • Committer: Bazaar Package Importer
  • Author(s): Alessio Treglia
  • Date: 2009-07-07 09:09:38 UTC
  • mfrom: (2.1.1 sid)
  • Revision ID: james.westby@ubuntu.com-20090707090938-jvaub13ijh53oawy
Tags: 1.5-1ubuntu1
https://launchpad.net/bugs/392874
* Merge with debian unstable (LP: #392874), Ubuntu remaining changes:
  - debian/control:
    + Move libav*-unstripped-* packages to Recommends as suggested by
      upstream.
    + Improve long description.
    + Add watch file.
  - debian/copyright: Replace deprecated symbol (C) with ©.

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transitions/fade.c
 
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/*
 
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 *  Copyright (c) 2009 Giuseppe Torelli <colossus73@gmail.com>
 
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 *
 
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 *  This program is free software; you can redistribute it and/or modify
 
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 *  it under the terms of the GNU General Public License as published by
 
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 *  the Free Software Foundation; either version 2 of the License,or
 
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 *  (at your option) any later version.
 
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 *
 
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 *  This program is distributed in the hope that it will be useful,
 
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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 *  GNU Library General Public License for more details.
 
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 *
 
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 *  You should have received a copy of the GNU General Public License
 
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 *  along with this program; if not,write to the Free Software
 
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 *  Foundation,Inc.,59 Temple Place - Suite 330,Boston,MA 02111-1307,USA.
 
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 *
 
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 */
 
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#include "export_to_ppm.h"
 
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#include <gdk/gdk.h>
 
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/* Local functions declarations */
 
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static void
 
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transition_render( GdkDrawable *window,
 
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                                   GdkPixbuf   *image_from,
 
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                                   GdkPixbuf   *image_to,
 
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                                   gdouble      progress,
 
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                                   gint         file_desc,
 
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                                   gint         direction );
 
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/* Plug-in API */
 
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void
 
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img_get_plugin_info( gchar  **group,
 
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                                         gchar ***trans )
 
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{
 
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        gint i = 0;
 
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        *group = "Fade";
 
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        *trans = g_new( gchar *, 4 );
 
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        (*trans)[i++] = "Cross Fade";
 
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        (*trans)[i++] = "img_cross_fade";
 
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        (*trans)[i++] = GINT_TO_POINTER( 19 );
 
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        (*trans)[i++] = NULL;
 
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}
 
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void img_cross_fade( GdkDrawable *window, GdkPixbuf *image_from, GdkPixbuf *image_to, gdouble progress, gint file_desc )
 
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{
 
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        transition_render( window, image_from, image_to, progress, file_desc, 1 );
 
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}
 
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/* Local functions definitions */
 
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static void
 
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transition_render( GdkDrawable *window,
 
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                                   GdkPixbuf   *image_from,
 
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                                   GdkPixbuf   *image_to,
 
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                                   gdouble      progress,
 
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                                   gint         file_desc,
 
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                                   gint         direction )
 
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{
 
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        cairo_t         *cr;
 
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        cairo_surface_t *surface;
 
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        gint             width, height;
 
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        gdk_drawable_get_size( window, &width, &height );
 
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        if( file_desc < 0 )
 
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        {
 
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                cr = gdk_cairo_create( window );
 
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        }
 
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        else
 
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        {
 
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                surface = cairo_image_surface_create( CAIRO_FORMAT_RGB24,
 
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                                                                                          width, height );
 
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                cr = cairo_create( surface );
 
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        }
 
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        gdk_cairo_set_source_pixbuf( cr, image_from, 0, 0 );
 
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        cairo_paint( cr );
 
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        gdk_cairo_set_source_pixbuf( cr, image_to, 0, 0 );
 
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        cairo_paint_with_alpha(cr, progress);
 
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        cairo_destroy(cr);
 
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        if(file_desc < 0)
 
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                return;
 
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        img_export_cairo_to_ppm(surface, file_desc);
 
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        cairo_surface_destroy(surface);
 
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}