mutter/cogl/cogl-path/cogl1-path.c

/*
 * Cogl
 *
 * A Low Level GPU Graphics and Utilities API
 *
 * Copyright (C) 2010,2013 Intel Corporation.
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * Authors:
 *  Robert Bragg <robert@linux.intel.com>
 */

#ifdef HAVE_CONFIG_H
#include "cogl-config.h"
#endif

#include "cogl-util.h"
#include "cogl-object.h"
#include "cogl-context-private.h"

#include "cogl-path-types.h"

#include "cogl2-path-functions.h"

#undef cogl_path_set_fill_rule
#undef cogl_path_get_fill_rule
#undef cogl_path_fill
#undef cogl_path_fill_preserve
#undef cogl_path_stroke
#undef cogl_path_stroke_preserve
#undef cogl_path_move_to
#undef cogl_path_rel_move_to
#undef cogl_path_line_to
#undef cogl_path_rel_line_to
#undef cogl_path_close
#undef cogl_path_new
#undef cogl_path_line
#undef cogl_path_polyline
#undef cogl_path_polygon
#undef cogl_path_rectangle
#undef cogl_path_arc
#undef cogl_path_ellipse
#undef cogl_path_round_rectangle
#undef cogl_path_curve_to
#undef cogl_path_rel_curve_to
#undef cogl_clip_push_from_path

#include "cogl1-path-functions.h"

#include <string.h>
#include <math.h>

static void
ensure_current_path (CoglContext *ctx)
{
  if (ctx->current_path == NULL)
    ctx->current_path = cogl2_path_new ();
}

static CoglPath *
get_current_path (CoglContext *ctx)
{
  ensure_current_path (ctx);
  return ctx->current_path;
}

void
cogl_path_set_fill_rule (CoglPathFillRule fill_rule)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_set_fill_rule (get_current_path (ctx), fill_rule);
}

CoglPathFillRule
cogl_path_get_fill_rule (void)
{
  _COGL_GET_CONTEXT (ctx, COGL_PATH_FILL_RULE_EVEN_ODD);

  return cogl2_path_get_fill_rule (get_current_path (ctx));
}

void
cogl_path_fill (void)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_fill (get_current_path (ctx));

  if (ctx->current_path)
    cogl_object_unref (ctx->current_path);
  ctx->current_path = cogl2_path_new ();
}

void
cogl_path_fill_preserve (void)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_fill (get_current_path (ctx));
}

void
cogl_path_stroke (void)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_stroke (get_current_path (ctx));

  if (ctx->current_path)
    cogl_object_unref (ctx->current_path);
  ctx->current_path = cogl2_path_new ();
}

void
cogl_path_stroke_preserve (void)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_stroke (get_current_path (ctx));
}

void
cogl_path_move_to (float x,
                   float y)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_move_to (get_current_path (ctx), x, y);
}

void
cogl_path_rel_move_to (float x,
                       float y)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_rel_move_to (get_current_path (ctx), x, y);
}

void
cogl_path_line_to (float x,
                   float y)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_line_to (get_current_path (ctx), x, y);
}

void
cogl_path_rel_line_to (float x,
                       float y)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_rel_line_to (get_current_path (ctx), x, y);
}

void
cogl_path_close (void)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_close (get_current_path (ctx));
}

void
cogl_path_new (void)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  if (ctx->current_path)
    cogl_object_unref (ctx->current_path);
  ctx->current_path = cogl2_path_new ();
}

void
cogl_path_line (float x_1,
	        float y_1,
	        float x_2,
	        float y_2)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_line (get_current_path (ctx), x_1, y_1, x_2, y_2);
}

void
cogl_path_polyline (const float *coords,
	            int num_points)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_polyline (get_current_path (ctx), coords, num_points);
}

void
cogl_path_polygon (const float *coords,
	           int num_points)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_polygon (get_current_path (ctx), coords, num_points);
}

void
cogl_path_rectangle (float x_1,
                     float y_1,
                     float x_2,
                     float y_2)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_rectangle (get_current_path (ctx), x_1, y_1, x_2, y_2);
}

void
cogl_path_arc (float center_x,
               float center_y,
               float radius_x,
               float radius_y,
               float angle_1,
               float angle_2)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_arc (get_current_path (ctx),
                  center_x,
                  center_y,
                  radius_x,
                  radius_y,
                  angle_1,
                  angle_2);
}

void
cogl_path_ellipse (float center_x,
                   float center_y,
                   float radius_x,
                   float radius_y)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_ellipse (get_current_path (ctx),
                      center_x,
                      center_y,
                      radius_x,
                      radius_y);
}

void
cogl_path_round_rectangle (float x_1,
                           float y_1,
                           float x_2,
                           float y_2,
                           float radius,
                           float arc_step)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_round_rectangle (get_current_path (ctx),
                              x_1, y_1, x_2, y_2, radius, arc_step);
}

void
cogl_path_curve_to (float x_1,
                    float y_1,
                    float x_2,
                    float y_2,
                    float x_3,
                    float y_3)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_curve_to (get_current_path (ctx),
                       x_1, y_1, x_2, y_2, x_3, y_3);
}

void
cogl_path_rel_curve_to (float x_1,
                        float y_1,
                        float x_2,
                        float y_2,
                        float x_3,
                        float y_3)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl2_path_rel_curve_to (get_current_path (ctx),
                           x_1, y_1, x_2, y_2, x_3, y_3);
}

CoglPath *
cogl_get_path (void)
{
  _COGL_GET_CONTEXT (ctx, NULL);

  return get_current_path (ctx);
}

void
cogl_set_path (CoglPath *path)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  _COGL_RETURN_IF_FAIL (cogl_is_path (path));

  /* Reference the new object first in case it is the same as the old
     object */
  cogl_object_ref (path);
  if (ctx->current_path)
    cogl_object_unref (ctx->current_path);
  ctx->current_path = path;
}

void
cogl_clip_push_from_path_preserve (void)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);
  cogl_framebuffer_push_path_clip (cogl_get_draw_framebuffer (),
                                   get_current_path (ctx));
}

void
cogl_clip_push_from_path (void)
{
  _COGL_GET_CONTEXT (ctx, NO_RETVAL);

  cogl_clip_push_from_path_preserve ();

  if (ctx->current_path)
    cogl_object_unref (ctx->current_path);
  ctx->current_path = cogl2_path_new ();
}