1 /* ScummVM - Graphic Adventure Engine
2 *
3 * ScummVM is the legal property of its developers, whose names
4 * are too numerous to list here. Please refer to the COPYRIGHT
5 * file distributed with this source distribution.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20 *
21 */
22
23 #include "common/savefile.h"
24 #include "common/system.h"
25
26 #include "image/png.h"
27
28 #include "sludge/errors.h"
29 #include "sludge/graphics.h"
30 #include "sludge/imgloader.h"
31 #include "sludge/newfatal.h"
32 #include "sludge/version.h"
33
34 namespace Sludge {
35
setThumbnailSize(int thumbWidth,int thumbHeight)36 bool GraphicsManager::setThumbnailSize(int thumbWidth, int thumbHeight) {
37 if (checkSizeValide(thumbWidth, thumbHeight))
38 {
39 _thumbWidth = thumbWidth;
40 _thumbHeight = thumbHeight;
41 return true;
42 }
43 return false;
44 }
45
saveThumbnail(Common::WriteStream * stream)46 bool GraphicsManager::saveThumbnail(Common::WriteStream *stream) {
47 stream->writeUint32LE(_thumbWidth);
48 stream->writeUint32LE(_thumbHeight);
49
50 if (_thumbWidth && _thumbHeight) {
51 if (!freeze())
52 return false;
53
54 if(!Image::writePNG(*stream, _renderSurface))
55 return false;
56
57 unfreeze(true);
58 }
59 stream->writeByte('!');
60 return true;
61 }
62
showThumbnail(const Common::String & filename,int atX,int atY)63 void GraphicsManager::showThumbnail(const Common::String &filename, int atX, int atY) {
64 Common::InSaveFile *fp = g_system->getSavefileManager()->openForLoading(filename);
65
66 if (fp == nullptr)
67 return;
68
69 bool headerBad = false;
70 if (fp->readByte() != 'S')
71 headerBad = true;
72 if (fp->readByte() != 'L')
73 headerBad = true;
74 if (fp->readByte() != 'U')
75 headerBad = true;
76 if (fp->readByte() != 'D')
77 headerBad = true;
78 if (fp->readByte() != 'S')
79 headerBad = true;
80 if (fp->readByte() != 'A')
81 headerBad = true;
82 if (headerBad) {
83 fatal(ERROR_GAME_LOAD_NO, filename);
84 return;
85 }
86 char c = fp->readByte();
87 while ((c = fp->readByte()))
88 ;
89
90 int majVersion = fp->readByte();
91 int minVersion = fp->readByte();
92 int ssgVersion = VERSION(majVersion, minVersion);
93
94 if (ssgVersion >= VERSION(1, 4)) {
95 int fileWidth = fp->readUint32LE();
96 int fileHeight = fp->readUint32LE();
97
98 Graphics::TransparentSurface thumbnail;
99 if (!ImgLoader::loadPNGImage(fp, &thumbnail))
100 return;
101
102 delete fp;
103 fp = nullptr;
104
105
106 if (atX < 0) {
107 fileWidth += atX;
108 atX = 0;
109 }
110 if (atY < 0) {
111 fileHeight += atY;
112 atY = 0;
113 }
114 if (fileWidth + atX > (int)_sceneWidth)
115 fileWidth = _sceneWidth - atX;
116 if (fileHeight + atY > (int)_sceneHeight)
117 fileHeight = _sceneHeight - atY;
118
119 thumbnail.blit(_backdropSurface, atX, atY, Graphics::FLIP_NONE, nullptr, TS_ARGB((uint)255, (uint)255, (uint)255, (uint)255), fileWidth, fileHeight);
120 thumbnail.free();
121 }
122 }
123
skipThumbnail(Common::SeekableReadStream * stream)124 bool GraphicsManager::skipThumbnail(Common::SeekableReadStream *stream) {
125 _thumbWidth = stream->readUint32LE();
126 _thumbHeight = stream->readUint32LE();
127
128 // Load image
129 Graphics::Surface tmp;
130 if (_thumbWidth & _thumbHeight) {
131 if (!ImgLoader::loadPNGImage(stream, &tmp))
132 return false;
133 else
134 tmp.free();
135 }
136
137 // Check flag
138 return (stream->readByte() == '!');
139 return true;
140 }
141
142 } // End of namespace Sludge
143