apps/plugins/lib/picture.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 Copyright Kévin Ferrare
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 #include "picture.h"
  23
  24 void picture_draw(struct screen* display, const struct picture* picture,
  25                   int x, int y){
  26     display->bitmap(
  27         picture->data,
  28         x, y,
  29         picture->width, picture->slide_height
  30     );
  31 }
  32
  33 /**
  34  * Draws a part of the given picture on the given screen
  35  * Use it when the data contains multiple pictures from top to bottom.
  36  * In that case, picture.slide_height represents the height of one picture,
  37  * not the whole set. picture.height represents the height of the whole image
  38  * @param display the screen where to display the picture
  39  * @param picture the picture's data, only a part will be displayed
  40  * @param yoffset display the data in the picture from yoffset to
  41  *                yoffset+picture.height
  42  * @param x abscissa where to put the picture
  43  * @param y ordinate where to put the picture
  44  */
  45 void vertical_picture_draw_part(struct screen* display, const struct picture* picture,
  46                        int yoffset,
  47                        int x, int y){
  48     display->bitmap_part(
  49         picture->data,
  50         /*slice into picture->data */
  51         0, yoffset,
  52         STRIDE(display->screen_type, picture->width, picture->height),
  53         /* Position on the screen */
  54         x, y, picture->width, picture->slide_height
  55     );
  56 }
  57
  58 /**
  59  * Draws a part of the given picture on the given screen
  60  * Use it when the data contains multiple pictures from top to bottom.
  61  *
  62  * @param display the screen where to display the picture
  63  * @param picture the picture's data, only a part will be displayed
  64  * @param sprite_no display that sprite in the picture
  65  * @param x abscissa where to put the picture
  66  * @param y ordinate where to put the picture
  67  */
  68 void vertical_picture_draw_sprite(struct screen* display, const struct picture* picture,
  69                        int sprite_no,
  70                        int x, int y){
  71     vertical_picture_draw_part( display, picture,
  72                                 sprite_no*picture->slide_height, x, y);
  73 }