blob: b93f2f9e9454d939c24cef61582c610e8f5fe06a (
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
|
// * This file is part of the COLOBOT source code
// * Copyright (C) 2012, Polish Portal of Colobot (PPC)
// *
// * 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 3 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, see http://www.gnu.org/licenses/.
/**
* \file common/image.h
* \brief Class for loading and saving images
*/
#pragma once
#include "graphics/core/color.h"
#include "math/intpoint.h"
#include <stddef.h>
#include <string>
// Forward declaration without including headers to clutter the code
struct SDL_Surface;
//! Implementation-specific image data
/** Note that the struct has no destructor and the surface
will not be freed at destruction. */
struct ImageData
{
//! SDL surface with image data
SDL_Surface* surface;
ImageData() { surface = NULL; }
};
/**
\class CImage
\brief Image loaded from file
Wrapper around SDL_Image library to load images. Also contains
function for saving images to PNG.
*/
class CImage
{
private:
//! Blocked!
CImage(const CImage &other) {}
//! Blocked!
void operator=(const CImage &other) {}
public:
//! Constructs empty image (with NULL data)
CImage();
//! Constructs a RGBA image of given size
CImage(Math::IntPoint size);
//! Destroys image, calling Free()
virtual ~CImage();
//! Frees the allocated image data
void Free();
//! Returns whether the image is empty (has null data)
bool IsEmpty() const;
//! Returns the image data; if empty - returns nullptr
ImageData* GetData();
//! Returns the image size
Math::IntPoint GetSize() const;
//! Fills the whole image with given color
void Fill(Gfx::IntColor color);
//! Sets the color at given pixel
void SetPixel(Math::IntPoint pixel, Gfx::Color color);
//! Sets the precise color at given pixel
void SetPixelInt(Math::IntPoint pixel, Gfx::IntColor color);
//! Returns the color at given pixel
Gfx::Color GetPixel(Math::IntPoint pixel);
//! Returns the precise color at given pixel
Gfx::IntColor GetPixelInt(Math::IntPoint pixel);
//! Pads the image to nearest power of 2 dimensions
void PadToNearestPowerOfTwo();
//! Convert the image to RGBA surface
void ConvertToRGBA();
//! Loads an image from the specified file
bool Load(const std::string &fileName);
//! Saves the image to the specified file in PNG format
bool SavePNG(const std::string &fileName);
//! Returns the last error
std::string GetError();
//! Flips the image vertically
void flipVertically();
//! sets/replaces the pixels from the surface
void SetDataPixels(void *pixels);
private:
//! Blit to new RGBA surface with given size
void BlitToNewRGBASurface(int width, int height);
//! Last encountered error
std::string m_error;
//! Image data
ImageData* m_data;
};
|
