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
|
#include <ClanLib/core.h>
#include <ClanLib/application.h>
#include <ClanLib/display.h>
#define __Apple__
#ifdef USE_SDL
#include <ClanLib/sdl.h>
#else
#include <ClanLib/gl.h>
#endif
class ExampleBasic2D : public CL_ClanApplication
{
public:
virtual int main(int argc, char **argv)
{
// Create a console window for text-output if not available
CL_ConsoleWindow console("Console");
console.redirect_stdio();
quit = false;
try
{
// Initialize ClanLib base components
CL_SetupCore setup_core;
// Initialize the ClanLib display component
CL_SetupDisplay setup_display;
// Initilize the OpenGL drivers
#ifdef USE_SDL
CL_SetupSDL setup_sdl;
#else
CL_SetupGL setup_gl;
#endif
// Set a videomode - 640x480
CL_DisplayWindow window("ClanLib Basic2D Example", 640, 480);
// Connect the Window close event
CL_Slot slot_quit = window.sig_window_close().connect(this, &ExampleBasic2D::on_window_close);
// Connect a keyboard handler to on_key_up()
CL_Slot slot_input_up = (window.get_ic()->get_keyboard()).sig_key_up().connect(this, &ExampleBasic2D::on_input_up);
// Load a surface from a targa-file
CL_Surface sur_logo("logo.tga");
double sin_count = 0.0f;
float ypos = 0.0f;
float ydir = 3.0f;
// Run until someone presses escape
while (!quit)
{
// Clear the display in a dark blue nuance
// The four arguments are red, green, blue and alpha
// All color nuances in ClanLib are measured in the interval 0->255
CL_Display::clear(CL_Color(0,0,56));
ypos += ydir;
if (ypos+200 >= CL_Display::get_height() || ypos < 0)
{
ydir *= -1;
}
CL_Display::draw_line(0, (int)(ypos-1), CL_Display::get_width(), (int)(ypos-1),CL_Color(127, 0, 0));
CL_Display::draw_line(0, (int)(ypos+198), CL_Display::get_width(), (int)(ypos+198), CL_Color( 127, 0, 0));
// Show the logo surface.
// Use the get_width() and get_height() functions of both
// CL_Display and CL_Surface, to show the surface in the bottom right corner
sur_logo.draw(
CL_Display::get_width()-sur_logo.get_width(),
CL_Display::get_height()-sur_logo.get_height(),
window.get_gc());
CL_Display::push_cliprect(CL_Rect(0, (int)(ypos), CL_Display::get_width(), (int)(ypos+198)));
// Draw a rectangle in the center of the screen
// going from (240, 140) -> (440, 340) _not_ including the
// pixels in the right-most column and bottom-most row (440, 340)
CL_Display::fill_rect(CL_Rect(240, 140, 440, 340), CL_Color(255,255,255,255));
// Frame the rectangle with red lines
CL_Display::draw_line(240, 140, 440, 140, CL_Color(255, 0, 0));
CL_Display::draw_line(240, 340, 440, 340, CL_Color(255, 0, 0));
CL_Display::draw_line(240, 140, 240, 340, CL_Color(255, 0, 0));
CL_Display::draw_line(440, 140, 440, 340, CL_Color(255, 0, 0));
// Show a few alpha-blending moving rectangles that moves in circles
float x = float(cos(sin_count)*120);
float y = float(sin(sin_count)*120);
sin_count += 0.05f;
CL_Display::fill_rect(CL_Rect((int)(320+x-30), (int)(240+y-30), (int)(320+x+30), (int)(240+y+30)), CL_Color(0, 255, 0, 127));
x = float(cos(sin_count+3.14159)*120);
y = float(sin(sin_count+3.14159)*120);
CL_Display::fill_rect(CL_Rect((int)(320+x-30),(int)(240+y-30),(int)(320+x+30),(int)(240+y+30)), CL_Color(255, 255, 0, 127));
CL_Display::pop_cliprect();
// Flip the display, showing on the screen what we have drawed
// since last call to flip_display()
CL_Display::flip();
// This call updates input and performs other "housekeeping"
// call this each frame
CL_System::keep_alive(10);
}
}
catch(CL_Error error)
{
std::cout << "Exception caught : " << error.message.c_str() << std::endl;
// Display console close message and wait for a key
console.display_close_message();
return -1;
}
return 0;
}
private:
bool quit;
void on_input_up(const CL_InputEvent &key)
{
if(key.id == CL_KEY_ESCAPE)
{
quit = true;
}
else if (key.id == CL_KEY_F12)
{
std::string filename = "screenshot.jpg";
std::cout << "Saving screenshot to: " << filename << std::endl;
CL_ProviderFactory::save(CL_Display::get_current_window()->get_gc()->get_pixeldata(CL_Rect(100, 200, 500, 300)),
filename);
}
}
void on_window_close()
{
quit = true;
}
} my_app;
|
