void window_draw_arc(struct window *w, int x, int y, double r, double start_theta, double end_theta, struct graphics_color color) {
graphics_arc(x + w->x, y + w->y, r, start_theta, end_theta, color);
}
void frame::on_paint(PAINT_EVT& evt)
{
HGFX g = evt.surface;
unsigned int width = evt.view_w;
unsigned int height = evt.view_h;
//graphics_gamma( g, 1.0 );
//graphics_blend_mode( g, GBlendContrast );
// dotted test
{
graphics_state_save(g);
graphics_dashes_add(g, 15, 5);
{
graphics_state_save(g);
graphics_line_width(g, 3);
graphics_dashes_clear(g);
graphics_dashes_add(g, 5, 5);
graphics_line(g, 10,10, 100, 100);
graphics_state_restore(g);
}
graphics_line(g, 20,10, 110, 100);
graphics_state_restore(g);
}
// arrow test
{
graphics_state_save(g);
graphics_line_width(g,2);
graphics_line( g, 100, 80, 200, 180 );
graphics_arrow_bone(g, 100, 80, 200, 180, 20, (40. / 360.) * 2. * 3.14 );
graphics_line( g, 140, 80, 240, 180 );
graphics_arrow(g, 140, 80, 240, 180, 40, (20. / 360.) * 2. * 3.14, 0.5 );
graphics_line( g, 180, 80, 280, 180 );
graphics_arrow(g, 180, 80, 280, 180, 40, (20. / 360.) * 2. * 3.14, 0.0 );
graphics_arrow(g, 280, 180, 180, 80, 40, (20. / 360.) * 2. * 3.14, 0.0 );
graphics_fill_color(g, graphics_rgbt(255,255,255,0) );
graphics_line( g, 230, 80, 330, 180 );
graphics_arrow(g, 230, 80, 330, 180, 40, (40. / 360.) * 2. * 3.14, 0.5 );
graphics_state_restore(g);
}
graphics_state_save(g);
graphics_scale(g,0.5,0.5);
graphics_translate(g,0,0);
// first quadrant, basic drawing functions
graphics_line(g, 0,0, width,height);
graphics_line_color(g,graphics_rgbt(255,0,0,0));
graphics_triangle(g, width/2, 10.5, 10.5, height - 10.5 , width - 10.5, height - 10.5);
graphics_line_color(g,graphics_rgbt(0,255,0,0));
graphics_rectangle(g, 20.5, 20.5, width - 20.5, height - 20.5);
graphics_line_color(g,graphics_rgbt(0,0,255,0));
graphics_rounded_rectangle(g, 30.5, 30.5, width - 30.5, height - 30.5, 10, 10);
graphics_line_color(g,graphics_rgbt(0,127,127,0));
graphics_ellipse(g, width/2, height/2, width/4, height/4);
int r = min(width, height);
graphics_line_color(g,graphics_rgbt(127,0,127,0));
graphics_arc(g, width/2, height/2, r/8, r/8, 0,6);
graphics_line_color(g,graphics_rgbt(127,127,0,0));
graphics_star(g, width/2, height/2, r/5, r/8, 0,5);
graphics_state_restore(g);
// second quadrant, path operations
graphics_state_save(g);
graphics_translate(g,width/2,0);
graphics_line_width(g,2);
graphics_line_color(g, graphics_rgbt(0xAF,0x7F,0x2F)); // brown
graphics_fill_linear_gradient(g, 30, 30, (150 + 70) / 2, 150,
graphics_rgbt(0xFF,0,0), // red
graphics_rgbt(0xFF,0xFF,0), // yellow
0.5);
graphics_open_path(g); // stealed from Mozilla <canvas> tests
graphics_move_to(g, 30, 30, false);
graphics_line_to(g, 150, 150, false);
graphics_bezier_curve_to(g, 60, 70, 60, 70, 70, 150, false);
graphics_line_to(g,30, 30, false);
graphics_close_path(g);
graphics_draw_path(g, FILL_AND_STROKE);
graphics_fill_radial_gradient(g, 250, 80, 50,
graphics_rgbt(0xFF,0,0), // red
graphics_rgbt(0xFF,0xFF,0)); // yellow
graphics_rounded_rectangle(g, 200, 30, 200 + 100, 30 + 100, 10, 10);
graphics_line_color( g, graphics_rgbt(0,200,0,0) );
graphics_fill_color( g, graphics_rgbt(150,230,150,80) );
graphics_ellipse( g, 190, 60, 50, 30 );
graphics_state_restore(g);
// Third quadrant, text output
graphics_state_save(g);
graphics_translate(g,0,height/2);
graphics_scale(g,0.5,0.5);
graphics_line(g,0,height/2, width, height/2);
graphics_line_width(g,3);
graphics_line_color(g, graphics_rgbt(0xAF,0x7F,0x2F)); // brown
graphics_fill_radial_gradient(g, width/2, height/2, r / 2,
graphics_rgbt(0xFF,0xFF,0), // yellow
graphics_rgbt(0,0x8F,0)); // green
graphics_text_alignment(g, ALIGN_CENTER, ALIGN_BASELINE);
graphics_font(g, "Century Gothic", r / 5);
graphics_text(g, width/2, height/2, L"graphinius", 10);
graphics_state_restore(g);
// Fourth quadrant, image output
graphics_state_save(g);
graphics_translate(g,width/2,height/2);
graphics_scale(g,0.5,0.5);
static HIMG img = 0;
if(!img)
{
tool::mm_file mf;
if( mf.open("../petrov_vodkin_A_Candle_and_a_Decanter.jpg") )
image_load( (BYTE*) mf.data(), mf.size(), &img ); // load png/jpeg/etc. image from stream of bytes
}
if(img)
{
DIM w = width - 20;
DIM h = height - 20;
graphics_draw_image ( g, img, 10, 10, &w, &h );
}
// pattern fill test
{
graphics_fill_color(g, graphics_rgbt(0xFF,0xdd,0) );
graphics_state_save(g);
static HIMG pat = 0;
if(!pat)
{
tool::mm_file mf;
if( mf.open("../cubes.png") )
image_load( (BYTE*) mf.data(), mf.size(), &pat ); // load png/jpeg/etc. image from stream of bytes
}
if(pat)
{
graphics_fill_pattern(g, pat, 255, -width/2, 0);
graphics_ellipse( g, 400, 40, 120, 100 );
}
graphics_state_restore(g);
graphics_ellipse( g, 100, 40, 60, 50 );
}
graphics_state_restore(g);
}
