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#include <stdio.h>
#include "agg_basics.h"
#include "agg_rendering_buffer.h"
#include "agg_rasterizer_scanline_aa.h"
#include "agg_scanline_p.h"
#include "agg_renderer_scanline.h"
#include "agg_pixfmt_rgb.h"
#include "agg_gamma_lut.h"
#include "agg_ellipse.h"
#include "agg_rounded_rect.h"
#include "agg_conv_stroke.h"
#include "platform/agg_platform_support.h"
#include "ctrl/agg_slider_ctrl.h"
#include "ctrl/agg_cbox_ctrl.h"
enum flip_y_e { flip_y = true };
class the_application : public agg::platform_support
{
double m_x[2];
double m_y[2];
double m_dx;
double m_dy;
int m_idx;
agg::slider_ctrl<agg::rgba8> m_radius;
agg::slider_ctrl<agg::rgba8> m_gamma;
agg::slider_ctrl<agg::rgba8> m_offset;
agg::cbox_ctrl<agg::rgba8> m_white_on_black;
public:
the_application(agg::pix_format_e format, bool flip_y) :
agg::platform_support(format, flip_y),
m_idx(-1),
m_radius(10, 10, 600-10, 19, !flip_y),
m_gamma(10, 10+20, 600-10, 19+20, !flip_y),
m_offset(10, 10+40, 600-10, 19+40, !flip_y),
m_white_on_black(10, 10+60, "White on black")
{
m_x[0] = 100; m_y[0] = 100;
m_x[1] = 500; m_y[1] = 350;
add_ctrl(m_radius);
add_ctrl(m_gamma);
add_ctrl(m_offset);
add_ctrl(m_white_on_black);
m_gamma.label("gamma=%4.3f");
m_gamma.range(0.0, 3.0);
m_gamma.value(1.8);
m_radius.label("radius=%4.3f");
m_radius.range(0.0, 50.0);
m_radius.value(25.0);
m_offset.label("subpixel offset=%4.3f");
m_offset.range(-2.0, 3.0);
m_white_on_black.text_color(agg::rgba8(127, 127, 127));
m_white_on_black.inactive_color(agg::rgba8(127, 127, 127));
}
virtual void on_draw()
{
typedef agg::gamma_lut<agg::int8u, agg::int8u, 8, 8> gamma_lut_type;
typedef agg::pixfmt_bgr24_gamma<gamma_lut_type> pixfmt;
typedef agg::renderer_base<pixfmt> renderer_base;
typedef agg::renderer_scanline_aa_solid<renderer_base> renderer_solid;
gamma_lut_type gamma(m_gamma.value());
pixfmt pixf(rbuf_window(), gamma);
renderer_base rb(pixf);
renderer_solid ren(rb);
rb.clear(m_white_on_black.status() ? agg::rgba(0,0,0) : agg::rgba(1,1,1));
agg::rasterizer_scanline_aa<> ras;
agg::scanline_p8 sl;
agg::ellipse e;
// Render two "control" circles
ren.color(agg::rgba8(127,127,127));
e.init(m_x[0], m_y[0], 3, 3, 16);
ras.add_path(e);
agg::render_scanlines(ras, sl, ren);
e.init(m_x[1], m_y[1], 3, 3, 16);
ras.add_path(e);
agg::render_scanlines(ras, sl, ren);
double d = m_offset.value();
// Creating a rounded rectangle
agg::rounded_rect r(m_x[0]+d, m_y[0]+d, m_x[1]+d, m_y[1]+d, m_radius.value());
r.normalize_radius();
// Drawing as an outline
agg::conv_stroke<agg::rounded_rect> p(r);
p.width(1.0);
ras.add_path(p);
ren.color(m_white_on_black.status() ? agg::rgba(1,1,1) : agg::rgba(0,0,0));
agg::render_scanlines(ras, sl, ren);
ras.gamma(agg::gamma_none());
// Render the controls
agg::render_ctrl(ras, sl, rb, m_radius);
agg::render_ctrl(ras, sl, rb, m_gamma);
agg::render_ctrl(ras, sl, rb, m_offset);
agg::render_ctrl(ras, sl, rb, m_white_on_black);
}
virtual void on_mouse_button_down(int x, int y, unsigned flags)
{
if(flags & agg::mouse_left)
{
unsigned i;
for (i = 0; i < 2; i++)
{
if(sqrt( (x-m_x[i]) * (x-m_x[i]) + (y-m_y[i]) * (y-m_y[i]) ) < 5.0)
{
m_dx = x - m_x[i];
m_dy = y - m_y[i];
m_idx = i;
break;
}
}
}
}
virtual void on_mouse_move(int x, int y, unsigned flags)
{
if(flags & agg::mouse_left)
{
if(m_idx >= 0)
{
m_x[m_idx] = x - m_dx;
m_y[m_idx] = y - m_dy;
force_redraw();
}
}
else
{
on_mouse_button_up(x, y, flags);
}
}
virtual void on_mouse_button_up(int x, int y, unsigned flags)
{
m_idx = -1;
}
};
int agg_main(int argc, char* argv[])
{
the_application app(agg::pix_format_bgr24, flip_y);
app.caption("AGG Example. Rounded rectangle with gamma-correction & stuff");
if(app.init(600, 400, agg::window_resize))
{
return app.run();
}
return 1;
}
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