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#include <ClanLib/core.h>
#include <ClanLib/application.h>
#include <ClanLib/display.h>
#include "cl_writepng.h"
class ScreenShotApp : public CL_ClanApplication
{
public:
virtual char *get_title() { return "Press space to take screenshot"; }
CL_Surface *take_screen_shot()
{
unsigned short width = CL_Display::get_width();
unsigned short height = CL_Display::get_height();
CL_Canvas *canvas = new CL_Canvas(width, height);
float r=0, g=0, b=0, a=0;
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
CL_Display::get_target()->get_pixel( x, y, &r, &g, &b, &a );
canvas->draw_pixel( x, y, r, g, b, 1.0f );
}
}
return CL_Surface::create(canvas);
}
virtual int main(int, char **)
{
// Create a console window for text-output if not available
CL_ConsoleWindow console("Console");
console.redirect_stdio();
try
{
CL_SetupCore::init();
CL_SetupDisplay::init();
// Set mode: 320x200 16 bpp
CL_Display::set_videomode(320, 200, 16, false);
std::cout << "Press space to get a screenshot" << std::endl;
// Loop until the user hits escape:
while (CL_Keyboard::get_keycode(CL_KEY_ESCAPE) == false)
{
// Clear the display
CL_Display::clear_display();
// Let's draw something
CL_Display::fill_rect(1,1,200,200,0.2f,0.2f,0.2f,1.0f);
CL_Display::fill_rect(1,1,50,50,1.0f,0.0f,0.0f,1.0f);//red
CL_Display::fill_rect(50,50,100,100,0.0f,1.0f,0.0f,1.0f);//green
CL_Display::fill_rect(150,150,200,200,0.0f,0.0f,1.0f,1.0f);//blue
// Make sure our updates are displayed
CL_Display::flip_display();
// Update keyboard input and handle system events:
// Exits the loop if ClanLib requests shutdown - for instance if
// someone closes the window.
CL_System::keep_alive();
// If someone pressed SPACE
if(CL_Keyboard::get_keycode(CL_KEY_SPACE))
{
// Save a screenshot
std::cout << "Saving png" << std::endl;
CL_Surface *screenshot = take_screen_shot();
WritePNG::write_png( screenshot, "screenshot.png" );
}
}
CL_SetupDisplay::deinit();
CL_SetupCore::deinit();
}
catch (CL_Error err)
{
std::cout << "Error: " << err.message.c_str() << std::endl;
}
// Display console close message and wait for a key
console.display_close_message();
return 0;
}
} app;
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