aboutsummaryrefslogtreecommitdiff
path: root/graphics/surface.cpp
blob: 6a851ae5e520b97e0d7ce85db28155e1f8ac2f70 (plain)
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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
/* ScummVM - Scumm Interpreter
 * Copyright (C) 2002-2006 The ScummVM project
 *
 * 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.
 *
 * $URL$
 * $Id$
 */

#include "common/stdafx.h"
#include "common/util.h"
#include "graphics/primitives.h"
#include "graphics/surface.h"

namespace Graphics {

static void plotPoint1(int x, int y, int color, void *data) {
	Surface *s = (Surface *)data;
	if (x >= 0 && x < s->w && y >= 0 && y < s->h) {
		byte *ptr = (byte *)s->getBasePtr(x, y);
		*ptr = (byte)color;
	}
}

static void plotPoint2(int x, int y, int color, void *data) {
	Surface *s = (Surface *)data;
	if (x >= 0 && x < s->w && y >= 0 && y < s->h) {
		uint16 *ptr = (uint16 *)s->getBasePtr(x, y);
		*ptr = (uint16)color;
	}
}

void Surface::drawLine(int x0, int y0, int x1, int y1, uint32 color) {
	if (bytesPerPixel == 1)
		Graphics::drawLine(x0, y0, x1, y1, color, &plotPoint1, this);
	else if (bytesPerPixel == 2)
		Graphics::drawLine(x0, y0, x1, y1, color, &plotPoint2, this);
	else
		error("Surface::drawLine: bytesPerPixel must be 1 or 2");
}

void Surface::create(uint16 width, uint16 height, uint8 bytesPP) {
	free();

	w = width;
	h = height;
	bytesPerPixel = bytesPP;
	pitch = w * bytesPP;

	pixels = calloc(width * height, bytesPP);
	assert(pixels);
}

void Surface::free() {
 	::free(pixels);
 	pixels = 0;
 	w = h = pitch = 0;
 	bytesPerPixel = 0;
}

void Surface::hLine(int x, int y, int x2, uint32 color) {
	// Clipping
	if (y < 0 || y >= h)
		return;

	if (x2 < x)
		SWAP(x2, x);

	if (x < 0)
		x = 0;
	if (x2 >= w)
		x2 = w - 1;

	if (bytesPerPixel == 1) {
		byte *ptr = (byte *)getBasePtr(x, y);
		if (x2 >= x)
			memset(ptr, (byte)color, x2-x+1);
	} else if (bytesPerPixel == 2) {
		uint16 *ptr = (uint16 *)getBasePtr(x, y);
		while (x++ <= x2) {
			*ptr++ = (uint16)color;
		}
	} else {
		error("Surface::hLine: bytesPerPixel must be 1 or 2");
	}
}

void Surface::vLine(int x, int y, int y2, uint32 color) {
	// Clipping
	if (x < 0 || x >= w)
		return;

	if (y2 < y)
		SWAP(y2, y);

	if (y < 0)
		y = 0;
	if (y2 >= h)
		y2 = h - 1;

	if (bytesPerPixel == 1) {
		byte *ptr = (byte *)getBasePtr(x, y);
		while (y++ <= y2) {
			*ptr = (byte)color;
			ptr += pitch;
		}
	} else if (bytesPerPixel == 2) {
		uint16 *ptr = (uint16 *)getBasePtr(x, y);
		while (y++ <= y2) {
			*ptr = (uint16)color;
			ptr += pitch/2;
		}
	} else {
		error("Surface::vLine: bytesPerPixel must be 1 or 2");
	}
}

void Surface::fillRect(const Common::Rect &rOld, uint32 color) {
	Common::Rect r(rOld);
	r.clip(w, h);

	if (!r.isValidRect())
		return;

	int width = r.width();
	int height = r.height();
	int i;

	if (bytesPerPixel == 1) {
		byte *ptr = (byte *)getBasePtr(r.left, r.top);
		while (height--) {
			memset(ptr, (byte)color, width);
			ptr += pitch;
		}
	} else if (bytesPerPixel == 2) {
		uint16 *ptr = (uint16 *)getBasePtr(r.left, r.top);
		while (height--) {
			for (i = 0; i < width; i++) {
				ptr[i] = (uint16)color;
			}
			ptr += pitch/2;
		}
	} else {
		error("Surface::fillRect: bytesPerPixel must be 1 or 2");
	}
}

void Surface::frameRect(const Common::Rect &r, uint32 color) {
	hLine(r.left, r.top, r.right-1, color);
	hLine(r.left, r.bottom-1, r.right-1, color);
	vLine(r.left, r.top, r.bottom-1, color);
	vLine(r.right-1, r.top, r.bottom-1, color);
}

} // End of namespace Graphics