1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
/*
* This code is based on Labyrinth of Time code with assistance of
*
* Copyright (c) 1993 Terra Nova Development
* Copyright (c) 2004 The Wyrmkeep Entertainment Co.
*
*/
#include "common/file.h"
#include "lab/lab.h"
#include "lab/dispman.h"
#include "lab/image.h"
namespace Lab {
Image::Image(Common::File *s, LabEngine *vm) : _vm(vm) {
_width = s->readUint16LE();
_height = s->readUint16LE();
s->skip(4);
uint32 size = _width * _height;
if (size & 1)
size++;
_imageData = new byte[size];
s->read(_imageData, size);
_autoFree = true;
}
Image::~Image() {
if (_autoFree)
delete[] _imageData;
}
void Image::setData(byte *d, bool autoFree) {
if (_autoFree)
delete[] _imageData;
_imageData = d;
_autoFree = autoFree;
}
void Image::blitBitmap(uint16 srcX, uint16 srcY, Image *imgDest,
uint16 destX, uint16 destY, uint16 width, uint16 height, byte masked) {
int clipWidth = width;
int clipHeight = height;
int destWidth = (imgDest) ? imgDest->_width : _vm->_graphics->_screenWidth;
int destHeight = (imgDest) ? imgDest->_height : _vm->_graphics->_screenHeight;
byte *destBuffer = (imgDest) ? imgDest->_imageData : _vm->_graphics->getCurrentDrawingBuffer();
if (destX + clipWidth > destWidth)
clipWidth = destWidth - destX;
if (destY + clipHeight > destHeight)
clipHeight = destHeight - destY;
if ((clipWidth > 0) && (clipHeight > 0)) {
byte *img = _imageData + srcY * _width + srcX;
byte *dest = destBuffer + destY * destWidth + destX;
if (!masked) {
for (int i = 0; i < clipHeight; i++) {
memcpy(dest, img, clipWidth);
img += _width;
dest += destWidth;
}
} else {
for (int i = 0; i < clipHeight; i++) {
for (int j = 0; j < clipWidth; j++) {
byte c = img[j];
if (c)
dest[j] = c - 1;
}
img += _width;
dest += destWidth;
}
}
}
}
void Image::drawImage(uint16 x, uint16 y) {
blitBitmap(0, 0, nullptr, x, y, _width, _height, false);
}
void Image::drawMaskImage(uint16 x, uint16 y) {
blitBitmap(0, 0, nullptr, x, y, _width, _height, true);
}
void Image::readScreenImage(uint16 x, uint16 y) {
int clipWidth = _width;
int clipHeight = _height;
if (x + clipWidth > _vm->_graphics->_screenWidth)
clipWidth = _vm->_graphics->_screenWidth - x;
if (y + clipHeight > _vm->_graphics->_screenHeight)
clipHeight = _vm->_graphics->_screenHeight - y;
if ((clipWidth > 0) && (clipHeight > 0)) {
byte *img = _imageData;
byte *screen = _vm->_graphics->getCurrentDrawingBuffer() + y * _vm->_graphics->_screenWidth + x;
while (clipHeight-- > 0) {
memcpy(img, screen, clipWidth);
img += _width;
screen += _vm->_graphics->_screenWidth;
}
}
}
} // End of namespace Lab
|
