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nana/source/paint/gadget.cpp
cnjinhao ad7c36be3f Renamed expr_color to color
2014-12-24 02:07:39 +08:00

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/*
* Graphics Gadget Implementation
* Nana C++ Library(http://www.nanapro.org)
* Copyright(C) 2003-2014 Jinhao(cnjinhao@hotmail.com)
*
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or copy at
* http://www.boost.org/LICENSE_1_0.txt)
*
* @file: nana/paint/gadget.cpp
*/
#include <nana/paint/graphics.hpp>
#include <nana/paint/gadget.hpp>
namespace nana
{
namespace paint
{
namespace gadget
{
namespace detail
{
typedef nana::paint::graphics& graph_reference;
void hollow_triangle(graph_reference graph, int x, int y, uint32_t direction)
{
x += 3;
y += 3;
switch (direction)
{
case directions::to_east:
graph.line(point{ x + 3, y + 1 }, point{ x + 3, y + 9 });
graph.line(point{ x + 4, y + 2 }, point{ x + 7, y + 5 });
graph.line(point{ x + 6, y + 6 }, point{ x + 4, y + 8 });
break;
case directions::to_southeast:
graph.line(point{ x + 2, y + 7 }, point{ x + 7, y + 7 });
graph.line(point{ x + 7, y + 2 }, point{ x + 7, y + 6 });
graph.line(point{ x + 3, y + 6 }, point{ x + 6, y + 3 });
break;
case directions::to_south:
y += 3;
graph.line(point{ x, y }, point{ x + 8, y });
graph.line(point{ x + 1, y + 1 }, point{ x + 4, y + 4 });
graph.line(point{ x + 7, y + 1 }, point{ x + 5, y + 3 });
break;
case directions::to_west:
x += 5;
y += 1;
graph.line(point{ x, y }, point{ x, y + 8 });
graph.line(point{ x - 4, y + 4 }, point{ x - 1, y + 1 });
graph.line(point{ x - 3, y + 5 }, point{ x - 1, y + 7 });
break;
case directions::to_north:
y += 7;
graph.line(point{ x, y }, point{x + 8, y});
graph.line(point{x + 1, y - 1}, point{x + 4, y - 4});
graph.line(point{x + 5, y - 3}, point{x + 7, y - 1});
break;
}
}
void solid_triangle(graph_reference graph, int x, int y, uint32_t dir)
{
x += 3;
y += 3;
switch(dir)
{
case directions::to_east:
for(int i = 0; i < 5; ++i)
graph.line(point{ x + 3 + i, y + 1 + i }, point{ x + 3 + i, y + 9 - i });
break;
case directions::to_southeast:
for(int i = 0; i < 6; ++i)
graph.line(point{ x + 2 + i, y + 7 - i }, point{ x + 7, y + 7 - i });
break;
case directions::to_south:
y += 3;
for(int i = 0; i < 5; ++i)
graph.line(point{ x + i, y + i }, point{ x + 8 - i, y + i });
break;
case directions::to_west:
x += 5;
y += 1;
for(int i = 0; i < 5; ++i)
graph.line(point{ x - i, y + i }, point{ x - i, y + 8 - i });
break;
case directions::to_north:
y += 7;
for(int i = 0; i < 5; ++i)
graph.line(point{ x + i, y - i }, point{ x + 8 - i, y - i });
break;
}
}
void direction_arrow(graph_reference graph, int x, int y, uint32_t dir)
{
graph.set_color({ 0x0, 0x2, 0x62 });
y += 5;
switch(dir)
{
case directions::to_north:
{
x += 3;
int pixels = 1;
for(int l = 0; l < 4; ++l)
{
for(int i = 0; i < pixels; ++i)
{
if(l ==3 && i == 3)
{}
else
graph.set_pixel(x + i, y);
}
x--;
y++;
pixels += 2;
}
graph.set_pixel(x + 1, y);
graph.set_pixel(x + 2, y);
graph.set_pixel(x + 6, y);
graph.set_pixel(x + 7, y);
}
break;
case directions::to_south:
{
graph.set_pixel(x, y);
graph.set_pixel(x + 1, y);
graph.set_pixel(x + 5, y);
graph.set_pixel(x + 6, y);
++y;
int pixels = 7;
for (int l = 0; l < 4; ++l)
{
for (int i = 0; i < pixels; ++i)
{
if (l != 0 || i != 3)
graph.set_pixel(x + i, y);
}
x++;
y++;
pixels -= 2;
}
}
break;
}
}
void double_arrow_line(nana::paint::graphics & graph, int x, int y, bool horizontal)
{
graph.set_pixel(x, y);
if(horizontal)
{
graph.set_pixel(x + 1, y);
graph.set_pixel(x + 4, y);
graph.set_pixel(x + 5, y);
}
else
{
graph.set_pixel(x, y + 1);
graph.set_pixel(x, y + 4);
graph.set_pixel(x, y + 5);
}
}
void double_arrow(nana::paint::graphics& graph, int x, int y, directions::t dir)
{
switch(dir)
{
case directions::to_east:
double_arrow_line(graph, x + 4, y + 6, true);
double_arrow_line(graph, x + 5, y + 7, true);
double_arrow_line(graph, x + 6, y + 8, true);
double_arrow_line(graph, x + 5, y + 9, true);
double_arrow_line(graph, x + 4, y + 10, true);
break;
case directions::to_west:
double_arrow_line(graph, x + 5, y + 6, true);
double_arrow_line(graph, x + 4, y + 7, true);
double_arrow_line(graph, x + 3, y + 8, true);
double_arrow_line(graph, x + 4, y + 9, true);
double_arrow_line(graph, x + 5, y + 10, true);
break;
case directions::to_south:
double_arrow_line(graph, x + 5, y + 4, false);
double_arrow_line(graph, x + 6, y + 5, false);
double_arrow_line(graph, x + 7, y + 6, false);
double_arrow_line(graph, x + 8, y + 5, false);
double_arrow_line(graph, x + 9, y + 4, false);
break;
case directions::to_north:
double_arrow_line(graph, x + 5, y + 6, false);
double_arrow_line(graph, x + 6, y + 5, false);
double_arrow_line(graph, x + 7, y + 4, false);
double_arrow_line(graph, x + 8, y + 5, false);
double_arrow_line(graph, x + 9, y + 6, false);
break;
default:
break;
}
}
}//end namespace detail
//arrow_16_pixels
//param@style: 0 = hollow, 1 = solid
void arrow_16_pixels(nana::paint::graphics& graph, int x, int y, const nana::color& clr, uint32_t style, directions::t dir)
{
graph.set_color(clr);
switch(style)
{
case 1:
detail::solid_triangle(graph, x, y, dir);
break;
case 2:
detail::direction_arrow(graph, x, y, dir);
break;
case 3:
detail::double_arrow(graph, x, y, dir);
break;
case 0:
default:
detail::hollow_triangle(graph, x, y, dir);
break;
}
}
void close_16_pixels(::nana::paint::graphics& graph, int x, int y, uint32_t style, const ::nana::color& clr)
{
graph.set_color(clr);
if(0 == style)
{
x += 3;
y += 3;
graph.line({ x, y }, { x + 9, y + 9 });
graph.line({ x + 1, y }, { x + 9, y + 8 });
graph.line({ x, y + 1 }, { x + 8, y + 9 });
graph.line({ x + 9, y }, { x, y + 9 });
graph.line({ x + 8, y }, { x, y + 8 });
graph.line({ x + 9, y + 1 }, { x + 1, y + 9 });
}
else
{
x += 4;
y += 4;
graph.line({ x, y }, { x + 7, y + 7 });
graph.line({ x + 1, y }, { x + 7, y + 6 });
graph.line({ x, y + 1 }, { x + 6, y + 7 });
graph.line({ x + 7, y }, { x, y + 7 });
graph.line({ x + 6, y }, { x, y + 6 });
graph.line({ x + 7, y + 1 }, { x + 1, y + 7 });
}
}
void cross(graphics& graph, int x, int y, uint32_t size, uint32_t thickness, const ::nana::color& color)
{
if (thickness + 2 <= size)
{
int gap = (size - thickness) / 2;
nana::point ps[12];
ps[0].x = x + gap;
ps[1].x = ps[0].x + thickness - 1;
ps[1].y = ps[0].y = y;
ps[2].x = ps[1].x;
ps[2].y = y + gap;
ps[3].x = ps[2].x + gap;
ps[3].y = ps[2].y;
ps[4].x = ps[3].x;
ps[4].y = ps[3].y + thickness - 1;
ps[5].x = ps[1].x;
ps[5].y = ps[4].y;
ps[6].x = ps[5].x;
ps[6].y = ps[5].y + gap;
ps[7].x = x + gap;
ps[7].y = ps[6].y;
ps[8].x = ps[7].x;
ps[8].y = ps[4].y;
ps[9].x = x;
ps[9].y = ps[4].y;
ps[10].x = x;
ps[10].y = y + gap;
ps[11].x = x + gap;
ps[11].y = y + gap;
::nana::color darker(0, 0, 0);
darker.blend(color, true);
graph.set_color(darker);
for (int i = 0; i < 11; ++i)
graph.line(ps[i], ps[i + 1]);
graph.line(ps[11], ps[0]);
graph.set_color(color);
graph.rectangle(rectangle{ ps[10].x + 1, ps[10].y + 1, (gap << 1) + thickness - 2, thickness - 2 }, true);
graph.rectangle(rectangle{ ps[0].x + 1, ps[0].y + 1, thickness - 2, (gap << 1) + thickness - 2 }, true);
}
}
}//end namespace gadget
}//end namespace paint
}//end namespace nana
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