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- Enable drawing of resources as ``3d'' cubes 

git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@1059 3ecf2c5c-341e-0410-92b4-d18e462d057c
This commit is contained in:
tchernobog 2006-09-08 09:49:30 +00:00
parent c2819ab0ea
commit c1d72439b5
3 changed files with 67 additions and 16 deletions
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47
src/cairo_elements.cc
View File

@ -83,16 +83,59 @@ CairoElements::draw_3dsphere(const Point& center, float radius, const Color& cl)
}
void
CairoElements::draw_3dcube(const Rectangle& area, const Color& cl)
CairoElements::draw_3dcube(const Rectangle& area, const Color& cl,
const float x_percent, const float y_percent)
{
cairo_t*& cr = _ctx;
const float& x0 = area.x0;
const float& y0 = area.y0;
const float& w = area.w;
const float& h = area.h;
const float& r = cl.r;
const float& g = cl.b;
const float& b = cl.b;
cairo_save(cr);
cairo_set_line_join(cr, CAIRO_LINE_JOIN_ROUND);
// Front side of the cube:
cairo_rectangle(cr,
x0, y0 + (1 - y_percent) * h,
w * x_percent, h * y_percent);
cairo_set_source_rgb(cr, r, g, b);
cairo_fill_preserve(cr);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_stroke(cr);
// ``Upper'' visible cube side:
cairo_new_path(cr);
cairo_move_to(cr, x0, y0 + (1 - y_percent) * h);
cairo_line_to(cr, x0 + (1 - x_percent) * w, y0);
cairo_line_to(cr, x0 + w, y0);
cairo_line_to(cr, x0 + w * x_percent, y0 + (1 - y_percent) * h);
cairo_close_path(cr);
cairo_set_source_rgb(cr, r - 0.2, g - 0.2, b - 0.2);
cairo_fill_preserve(cr);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_stroke(cr);
// FIXME : not implemented
// ``Right'' visible cube side:
cairo_new_path(cr);
cairo_move_to(cr, x0 + w * x_percent, y0 + (1 - y_percent) * h);
cairo_line_to(cr, x0 + w, y0);
cairo_line_to(cr, x0 + w, y0 + y_percent * h);
cairo_line_to(cr, x0 + w * x_percent, y0 + h);
cairo_close_path(cr);
cairo_set_source_rgb(cr, r - 0.4, g - 0.4, b - 0.4);
cairo_fill_preserve(cr);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_stroke(cr);
cairo_restore(cr);
}

2
src/cairo_elements.hh
View File

@ -65,7 +65,7 @@ namespace sgpem
CairoElements(cairo_t* const ctx);
void draw_3dsphere(const Point& center, float radius, const Color& cl);
void draw_3dcube(const Rectangle& area, const Color& cl);
void draw_3dcube(const Rectangle& area, const Color& cl, const float x_percent, const float y_percent);
void draw_container(const Rectangle& area);
void draw_expandable(const Rectangle& area, bool expanded = false);

30
src/holt_widget.cc
View File

@ -104,30 +104,38 @@ HoltResource::~HoltResource()
void HoltResource::draw(cairo_t *cr)
{
// draw rectangle
cairo_rectangle(cr,
_pos.real() - _radius, _pos.imag() - _radius,
2*_radius, 2*_radius);
// fill
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_fill_preserve (cr);
static const Color white(1, 1, 1);
static const float x_percent = 3.5f / 4;
static const float y_percent = 4.5f / 5;
CairoElements ce(cr);
// outline
cairo_set_source_rgb (cr, 0, 0, 0);
// draw rectangle
Rectangle area(_pos.real() - _radius, _pos.imag() - _radius, 2*_radius, 2*_radius);
ce.draw_3dcube(area, white, x_percent, y_percent);
cairo_save(cr);
// clip text outside region
cairo_clip_preserve (cr);
cairo_rectangle(cr, _pos.real() - _radius, _pos.imag() - _radius,
2 * _radius * x_percent, 2 * _radius * y_percent);
cairo_clip(cr);
// draw text
cairo_text_extents_t extents;
cairo_text_extents(cr, _resource->get_name().c_str(), &extents);
// cairo_move_to(cr, xpos - _radius, ypos - _radius + extents.height);
cairo_move_to(cr, _pos.real() - extents.width/2, _pos.imag() + extents.height/2);
cairo_move_to(cr,
_pos.real() - extents.width * (1 - x_percent + x_percent / 2),
_pos.imag() + extents.height * ((1 - y_percent) / 2 + 0.5) );
cairo_show_text(cr, _resource->get_name().c_str());
cairo_reset_clip (cr); // reset clip region
// stroke all
cairo_stroke (cr);
cairo_restore(cr);
}
Vec2 HoltResource::get_intersection_to(Vec2 pt)