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
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
/*
* The Mana World
* Copyright 2004 The Mana World Development Team
*
* This file is part of The Mana World.
*
* The Mana World 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
* any later version.
*
* The Mana World 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 The Mana World; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id$
*/
#include "../log.h"
#include "image.h"
#include <iostream>
#include <SDL_image.h>
Image::Image(SDL_Surface *image):
image(image)
{
}
Image::~Image()
{
unload();
}
Image* Image::load(const std::string &filePath)
{
#ifdef __DEBUG
std::cout << "Image::load(" << filePath << ")\n";
#endif
// Attempt to use SDL_Image to load the file.
SDL_Surface *image = IMG_Load(filePath.c_str());
// Check if the file was opened and return the appropriate value.
if (!image) {
log("Error", "Image load failed : %s", IMG_GetError());
//log("Error", "Image load failed : %s", filePath.c_str());
return NULL;
}
return new Image(image);
}
void Image::unload()
{
// Free the image surface.
if (image != NULL) {
SDL_FreeSurface(image);
image = NULL;
loaded = false;
}
}
int Image::getWidth() const
{
if (image != NULL) {
return image->w;
}
return 0;
}
int Image::getHeight() const
{
if (image != NULL) {
return image->h;
}
return 0;
}
Image *Image::getSubImage(int x, int y, int width, int height)
{
// Create a new clipped sub-image
return new SubImage(this, image, x, y, width, height);
}
Image *Image::getScaledInstance(int width, int height)
{
return new ScaledImage(this, image, width, height);
}
bool Image::draw(SDL_Surface *screen, int x, int y)
{
// Check that preconditions for blitting are met.
if (screen == NULL || image == NULL) return false;
SDL_Rect dstRect;
dstRect.x = x;
dstRect.y = y;
if (SDL_BlitSurface(image, NULL, screen, &dstRect) < 0) {
return false;
}
return true;
}
void Image::drawPattern(SDL_Surface *screen, int x, int y, int w, int h)
{
int iw = getWidth(); // Width of image
int ih = getHeight(); // Height of image
if (iw == 0 || ih == 0) return;
int px = 0; // X position on pattern plane
int py = 0; // Y position on pattern plane
while (py < h) {
while (px < w) {
draw(screen, x + px, y + py);
// TODO: Prevent overdraw
px += iw;
}
py += ih;
px = 0;
}
}
//============================================================================
SubImage::SubImage(Image *parent, SDL_Surface *image,
int x, int y, int width, int height):
Image(image),
parent(parent)
{
parent->incRef();
// Set up the rectangle.
rect.x = x;
rect.y = y;
rect.w = width;
rect.h = height;
}
SubImage::~SubImage()
{
image = NULL;
// TODO: Enable when no longer a problem
//parent->decRef();
}
int SubImage::getWidth() const
{
return rect.w;
}
int SubImage::getHeight() const
{
return rect.h;
}
Image *SubImage::getSubImage(int x, int y, int w, int h)
{
return NULL;
}
bool SubImage::draw(SDL_Surface *screen, int x, int y)
{
// Check that drawing preconditions are satisfied.
if (screen == NULL || image == NULL) return false;
SDL_Rect dstRect;
dstRect.x = x;
dstRect.y = y;
// Draw subimage part to given location
if (SDL_BlitSurface(image, &rect, screen, &dstRect) < 0) {
return false;
}
return true;
}
//============================================================================
ScaledImage::ScaledImage(
Image *parent, SDL_Surface *bmp, int width, int height):
Image(SDL_CreateRGBSurface(SDL_SWSURFACE, width, height, 32,
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
0xff000000,
0x00ff0000,
0x0000ff00,
0x000000ff
#else
0x000000ff,
0x0000ff00,
0x00ff0000,
0xff000000
#endif
))
{
if (image) {
// Somehow stretch the image using SDL_gfx
//stretch_blit(bmp, image, 0, 0, bmp->w, bmp->h, 0, 0, width, height);
}
}
ScaledImage::~ScaledImage()
{
if (image) {
SDL_FreeSurface(image);
image = NULL;
}
}
|
