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
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* pixelbuffer.h
*
* Thu Nov 10 09:00:37 CET 2011
* Copyright 2011 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* DrumGizmo 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#pragma once
#include "colour.h"
#include <cstddef>
#include <vector>
#include "guievent.h"
namespace GUI
{
class PixelBuffer
{
public:
PixelBuffer(std::size_t width, std::size_t height);
~PixelBuffer();
void realloc(std::size_t width, std::size_t height);
void setPixel(std::size_t x, std::size_t y, const Colour& c);
void writeLine(std::size_t x, std::size_t y,
const std::uint8_t* line, std::size_t len);
Rect updateBuffer(std::vector<class PixelBufferAlpha*>& pixel_buffers);
std::uint8_t* buf{nullptr};
std::size_t width{0};
std::size_t height{0};
};
class PixelBufferAlpha
{
public:
PixelBufferAlpha() = default;
PixelBufferAlpha(std::size_t width, std::size_t height);
~PixelBufferAlpha();
void realloc(std::size_t width, std::size_t height);
void clear();
void setPixel(std::size_t x, std::size_t y, const Colour& c);
void writeLine(std::size_t x, std::size_t y,
const std::uint8_t* line, std::size_t len);
void blendLine(std::size_t x, std::size_t y,
const std::uint8_t* line, std::size_t len);
void addPixel(std::size_t x, std::size_t y,
std::uint8_t red,
std::uint8_t green,
std::uint8_t blue,
std::uint8_t alpha);
void addPixel(std::size_t x, std::size_t y, const Colour& c);
void pixel(std::size_t x, std::size_t y,
std::uint8_t* red,
std::uint8_t* green,
std::uint8_t* blue,
std::uint8_t* alpha) const;
const Colour& pixel(std::size_t x, std::size_t y) const;
const std::uint8_t* getLine(std::size_t x, std::size_t y) const;
bool managed{false};
std::uint8_t* buf{nullptr};
std::size_t width{0};
std::size_t height{0};
int x{0};
int y{0};
bool dirty{true};
bool visible{true};
// Add optional dirty rect that this pixelbuffer took up since it was last
// rendered. Make sure to update this list on resize and/or move.
std::size_t last_width{0};
std::size_t last_height{0};
int last_x{0};
int last_y{0};
bool has_last{false};
};
} // GUI::
|
