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/*
* Copyright © 2012 Keith Packard <keithp@keithp.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
autoload Cairo;
autoload Client;
autoload Client::SVG;
extend namespace Client {
public namespace Draw {
import Cairo;
import Cairo::Rsvg;
import RR;
public typedef struct {
int xoff, yoff;
real xscale, yscale;
} transform_t;
typedef struct {
Cairo::surface_t surface;
int width, height;
rsvg_t svg;
} sprite_t;
sprite_t sprite_from_string(string xml) = (sprite_t) {
.svg = Cairo::Rsvg::new_from_string(xml),
.width = -1,
.height = -1
};
sprite_t[2] cell = { sprite_from_string(Client::SVG::cell1),
sprite_from_string(Client::SVG::cell2) };
sprite_t[Color] robots = {
Color.Red => sprite_from_string(Client::SVG::robot_red),
Color.Blue => sprite_from_string(Client::SVG::robot_blue),
Color.Yellow => sprite_from_string(Client::SVG::robot_yellow),
Color.Green => sprite_from_string(Client::SVG::robot_green) };
sprite_t robot_shadow = sprite_from_string(Client::SVG::robot_shadow);
sprite_t[Color][Shape] targets = {
Color.Red => {
Shape.Triangle => sprite_from_string(Client::SVG::target_red_triangle),
Shape.Square => sprite_from_string(Client::SVG::target_red_square),
Shape.Octagon => sprite_from_string(Client::SVG::target_red_octagon),
Shape.Circle => sprite_from_string(Client::SVG::target_red_circle),
},
Color.Yellow => {
Shape.Triangle => sprite_from_string(Client::SVG::target_yellow_triangle),
Shape.Square => sprite_from_string(Client::SVG::target_yellow_square),
Shape.Octagon => sprite_from_string(Client::SVG::target_yellow_octagon),
Shape.Circle => sprite_from_string(Client::SVG::target_yellow_circle),
},
Color.Green => {
Shape.Triangle => sprite_from_string(Client::SVG::target_green_triangle),
Shape.Square => sprite_from_string(Client::SVG::target_green_square),
Shape.Octagon => sprite_from_string(Client::SVG::target_green_octagon),
Shape.Circle => sprite_from_string(Client::SVG::target_green_circle),
},
Color.Blue => {
Shape.Triangle => sprite_from_string(Client::SVG::target_blue_triangle),
Shape.Square => sprite_from_string(Client::SVG::target_blue_square),
Shape.Octagon => sprite_from_string(Client::SVG::target_blue_octagon),
Shape.Circle => sprite_from_string(Client::SVG::target_blue_circle),
},
Color.Whirl => {
Shape.Whirl => sprite_from_string(Client::SVG::target_whirl),
},
};
sprite_t wall = sprite_from_string(Client::SVG::wall);
void draw_sprite(&sprite_t sprite, cairo_t cr) {
render(sprite.svg, cr);
}
dimensions_t cell_dim = get_dimensions(cell[0].svg);
dimensions_t wall_dim = get_dimensions(wall.svg);
public int cell_width = cell_dim.width;
public int cell_height = cell_dim.height;
public int wall_thickness = wall_dim.height;
void draw_cached_sprite(&sprite_t sprite, cairo_t cr, &transform_t t, real alpha) {
int width = ceil(cell_width * t.xscale);
int height = ceil(cell_width * t.yscale);
save(cr);
if (width != sprite.width || height != sprite.height) {
if (!is_uninit(&sprite.surface))
Cairo::Surface::destroy(sprite.surface);
sprite.width = width;
sprite.height = height;
if (width > 0 && height > 0) {
sprite.surface = Cairo::Surface::create_similar(Cairo::get_target(cr),
Cairo::content_t.COLOR_ALPHA,
width, height);
cairo_t scr = Cairo::create(sprite.surface);
scale(scr, t.xscale, t.yscale);
draw_sprite(&sprite, scr);
Cairo::destroy(scr);
}
}
if (sprite.width > 0 && sprite.height > 0) {
set_source_surface(cr, sprite.surface, 0, 0);
if (alpha != 1)
paint_with_alpha(cr, alpha);
else
paint(cr);
}
restore(cr);
}
public void background (cairo_t cr, int x, int y, RR::Object object, &transform_t t) {
save(cr);
translate(cr, x * cell_width * t.xscale + t.xoff, y * cell_height * t.yscale + t.yoff);
draw_cached_sprite(&cell[x+y & 1], cr, &t, 1);
restore(cr);
}
public void walls(cairo_t cr, int x, int y, RR::Object object, &transform_t t) {
save(cr);
translate(cr, t.xoff, t.yoff);
scale(cr, t.xscale, t.yscale);
translate(cr, x * cell_width, y * cell_height);
/*
rectangle(cr, 0, 0, cell_width, cell_height);
clip(cr);
*/
void draw_wall (bool doit, bool vertical, bool shift) {
if (!doit) return;
save(cr);
if (vertical) {
rotate(cr, pi/2);
if (shift)
translate(cr, 0, -cell_height);
} else if (shift)
translate(cr, 0, cell_height);
draw_sprite(&wall, cr);
restore(cr);
}
draw_wall (object.walls.left, true, false);
draw_wall (object.walls.above, false, false);
if (x == 15)
draw_wall (object.walls.right, true, true);
if (y == 15)
draw_wall (object.walls.below, false, true);
restore(cr);
}
public void contents (cairo_t cr, int x, int y, RR::Object object,
RR::TargetOrNone active_target,
RR::RobotOrNone active_robot,
&transform_t t) {
save(cr);
translate(cr, x * cell_width * t.xscale + t.xoff, y * cell_height * t.yscale + t.yoff);
union switch (object.target) {
case none:
break;
case target target:
real alpha = 1;
if (object.target != active_target)
alpha = 0.25;
draw_cached_sprite(&targets[target.color][target.shape], cr, &t, alpha);
break;
}
union switch(object.robot) {
case none:
break;
case robot r:
union switch (active_robot) {
case robot a:
if (a.color == r.color) {
save(cr);
scale(cr, t.xscale, t.yscale);
translate(cr, 5, 1);
scale(cr, 1.1, 1.1);
draw_sprite(&robot_shadow, cr);
restore(cr);
}
break;
default:
}
draw_cached_sprite(&robots[r.color], cr, &t, 1);
break;
}
restore(cr);
}
public void target (cairo_t cr, real x, real y, TargetOrNone target, &transform_t t) {
save(cr);
translate(cr, x * cell_width * t.xscale + t.xoff, y * cell_height * t.yscale + t.yoff);
scale(cr, 2 * t.xscale, 2 *t.yscale);
union switch (target) {
case target t:
draw_sprite(&targets[t.color][t.shape], cr);
break;
default:
break;
}
restore(cr);
}
}
}
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