NGL  6.5
The NCCA Graphics Library
Text.h
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1 /*
2  Copyright (C) 2011 Jon Macey
3 
4  This program is free software: you can redistribute it and/or modify
5  it under the terms of the GNU General Public License as published by
6  the Free Software Foundation, either version 3 of the License, or
7  (at your option) any later version.
8 
9  This program is distributed in the hope that it will be useful,
10  but WITHOUT ANY WARRANTY; without even the implied warranty of
11  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  GNU General Public License for more details.
13 
14  You should have received a copy of the GNU General Public License
15  along with this program. If not, see <http://www.gnu.org/licenses/>.
16  */
17 #ifndef TEXT_H_
18 #define TEXT_H_
19 
20 
21 //----------------------------------------------------------------------------------------------------------------------
37 //----------------------------------------------------------------------------------------------------------------------
38 // must include types.h first for Real and GLEW if required
39 
40 #include "Colour.h"
41 #include "Types.h"
42 #include "Vec2.h"
43 #include "VAOFactory.h"
44 #include "SimpleVAO.h"
45 #include <memory>
46 #include <QFont>
47 #include "Mat4.h"
48 
49 namespace ngl
50 {
51 
52  //----------------------------------------------------------------------------------------------------------------------
57  //----------------------------------------------------------------------------------------------------------------------
58  struct FontChar
59  {
60  int width;
61  GLuint textureID;
62  AbstractVAO *vao;
63  };
64 
65 class NGL_DLLEXPORT Text
66 {
67 public:
68  //----------------------------------------------------------------------------------------------------------------------
73  //----------------------------------------------------------------------------------------------------------------------
74  Text( const QFont &_f ) noexcept;
75 
76  //----------------------------------------------------------------------------------------------------------------------
78  //----------------------------------------------------------------------------------------------------------------------
79  ~Text();
80 
81  //----------------------------------------------------------------------------------------------------------------------
90  //----------------------------------------------------------------------------------------------------------------------
91  void renderText(float _x, float _y, const QString &_text ) const noexcept;
92  //----------------------------------------------------------------------------------------------------------------------
99  //----------------------------------------------------------------------------------------------------------------------
100  void setScreenSize( int _w, int _h ) noexcept;
101  //----------------------------------------------------------------------------------------------------------------------
104  //----------------------------------------------------------------------------------------------------------------------
105  void setColour( const Colour &_c ) noexcept;
106  //----------------------------------------------------------------------------------------------------------------------
111  //----------------------------------------------------------------------------------------------------------------------
112  void setColour( Real _r, Real _g, Real _b ) noexcept;
113 
114  void setTransform(float _x, float _y) noexcept;
115 protected:
116  //----------------------------------------------------------------------------------------------------------------------
120  //----------------------------------------------------------------------------------------------------------------------
121  QHash <char,FontChar> m_characters;
122 };
123 
124 }
125 
126 #endif
127 
128 
129 
130 
131 
132 
133 //----------------------------------------------------------------------------------------------------------------------
ngl::Text::m_characters
QHash< char, FontChar > m_characters
a hash to store our FontChar data looked up by the char we want to render according to the Qt Docs a ...
Definition: Text.h:121
GLuint
unsigned int GLuint
Definition: glew.h:280
ngl::FontChar::width
int width
Definition: Text.h:60
ngl::Colour
simple class to hold colour information and set the basic opengl colour state. also has overloaded me...
Definition: Colour.h:40
Colour.h
a simple colour class for RGBA colour
Types.h
main definition of types and namespace
ngl::FontChar::textureID
GLuint textureID
the width of the font
Definition: Text.h:61
NGL_DLLEXPORT
#define NGL_DLLEXPORT
Definition: Types.h:65
ngl::Text
Definition: Text.h:65
ngl::FontChar
a structure to hold the font char texture id and the vao. The vao for each font will be a different s...
Definition: Text.h:58
ngl
implementation files for RibExport class
Definition: AABB.cpp:22
ngl::Real
PRECISION Real
create a variable called Real which is the main data type we use (GLfloat for most cases) ...
Definition: Types.h:127
Vec2.h
a simple 2 tuple container for compatibility with glsl
ngl::AbstractVAO
base class for all VAO from the VAOFactory this defines the base class type with simple draw / bind b...
Definition: AbstractVAO.h:34
SimpleVAO.h
ngl::FontChar::vao
AbstractVAO * vao
the texture id of the font billboard
Definition: Text.h:62
Mat4.h
VAOFactory.h