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Viewing changes to transitions/roller_blind.c

  • 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/roller_blind.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 <gdk/gdk.h>
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void img_transition_set_name(gchar **name)
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{
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        *name = "Roller Blind";
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}
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void img_transition_render(GdkDrawable *window, GdkPixbuf *image_from, GdkPixbuf *image_to, gdouble progress, gint file_desc)
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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, i, j;
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        static gint count = 0;
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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, 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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        for (i = 0; i <= height; i+= 10)
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        {
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                for (j=0 ; j < count * progress; j++)
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                {
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                        cairo_move_to(cr, 0, i+j);
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                        cairo_line_to(cr, width, i+j);
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                }
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        }
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        count++;
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        if (progress > 1)
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                count = 0;
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        cairo_stroke(cr);
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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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}