libs/gfx/GP_Rect.c

   1 /*****************************************************************************
   2  * This file is part of gfxprim library.                                     *
   3  *                                                                           *
   4  * Gfxprim is free software; you can redistribute it and/or                  *
   5  * modify it under the terms of the GNU Lesser General Public                *
   6  * License as published by the Free Software Foundation; either              *
   7  * version 2.1 of the License, or (at your option) any later version.        *
   8  *                                                                           *
   9  * Gfxprim is distributed in the hope that it will be useful,                *
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of            *
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU         *
  12  * Lesser General Public License for more details.                           *
  13  *                                                                           *
  14  * You should have received a copy of the GNU Lesser General Public          *
  15  * License along with gfxprim; if not, write to the Free Software            *
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor,                        *
  17  * Boston, MA  02110-1301  USA                                               *
  18  *                                                                           *
  19  * Copyright (C) 2009-2011 Jiri "BlueBear" Dluhos                            *
  20  *                         <jiri.bluebear.dluhos@gmail.com>                  *
  21  *                                                                           *
  22  * Copyright (C) 2009-2012 Cyril Hrubis <metan@ucw.cz>                       *
  23  *                                                                           *
  24  *****************************************************************************/
  25
  26 #include "core/GP_Transform.h"
  27
  28 #include "gfx/GP_HLine.h"
  29 #include "gfx/GP_VLine.h"
  30 #include "gfx/GP_Rect.h"
  31
  32 void gp_rect_xyxy_raw(gp_pixmap *pixmap, gp_coord x0, gp_coord y0,
  33                       gp_coord x1, gp_coord y1, gp_pixel pixel)
  34 {
  35         gp_hline_raw(pixmap, x0, x1, y0, pixel);
  36         gp_hline_raw(pixmap, x0, x1, y1, pixel);
  37         gp_vline_raw(pixmap, x0, y0, y1, pixel);
  38         gp_vline_raw(pixmap, x1, y0, y1, pixel);
  39 }
  40
  41 void gp_rect_xywh_raw(gp_pixmap *pixmap, gp_coord x, gp_coord y,
  42                       gp_size w, gp_size h, gp_pixel pixel)
  43 {
  44         if (w == 0 || h == 0)
  45                 return;
  46
  47         gp_rect_xyxy_raw(pixmap, x, y, x + w - 1, y + h - 1, pixel);
  48 }
  49
  50 void gp_rect_xyxy(gp_pixmap *pixmap, gp_coord x0, gp_coord y0,
  51                   gp_coord x1, gp_coord y1, gp_pixel pixel)
  52 {
  53         GP_CHECK_PIXMAP(pixmap);
  54
  55         GP_TRANSFORM_POINT(pixmap, x0, y0);
  56         GP_TRANSFORM_POINT(pixmap, x1, y1);
  57
  58         gp_rect_xyxy_raw(pixmap, x0, y0, x1, y1, pixel);
  59 }
  60
  61 void gp_rect_xywh(gp_pixmap *pixmap, gp_coord x, gp_coord y,
  62                   gp_size w, gp_size h, gp_pixel pixel)
  63 {
  64         if (w == 0 || h == 0)
  65                 return;
  66
  67         gp_rect_xyxy(pixmap, x, y, x + w - 1, y + h - 1, pixel);
  68 }
  69
  70 void gp_fill_rect_xyxy_raw(gp_pixmap *pixmap, gp_coord x0, gp_coord y0,
  71                            gp_coord x1, gp_coord y1, gp_pixel pixel)
  72 {
  73         GP_CHECK_PIXMAP(pixmap);
  74
  75         if (y0 > y1)
  76                 GP_SWAP(y0, y1);
  77
  78         y0 = GP_MAX(0, y0);
  79         y1 = GP_MIN(y1, (gp_coord)pixmap->h - 1);
  80
  81         gp_coord y;
  82         for (y = y0; y <= y1; y++)
  83                 gp_hline_raw(pixmap, x0, x1, y, pixel);
  84 }
  85
  86 void gp_fill_rect_xywh_raw(gp_pixmap *pixmap, gp_coord x, gp_coord y,
  87                            gp_size w, gp_size h, gp_pixel pixel)
  88 {
  89         if (w == 0 || h == 0)
  90                 return;
  91
  92         gp_fill_rect_xyxy_raw(pixmap, x, y, x + w - 1, y + h - 1, pixel);
  93 }
  94
  95 void gp_fill_rect_xyxy(gp_pixmap *pixmap, gp_coord x0, gp_coord y0,
  96                        gp_coord x1, gp_coord y1, gp_pixel pixel)
  97 {
  98         GP_CHECK_PIXMAP(pixmap);
  99
 100         GP_TRANSFORM_POINT(pixmap, x0, y0);
 101         GP_TRANSFORM_POINT(pixmap, x1, y1);
 102
 103         gp_fill_rect_xyxy_raw(pixmap, x0, y0, x1, y1, pixel);
 104 }
 105
 106 void gp_fill_rect_xywh(gp_pixmap *pixmap, gp_coord x, gp_coord y,
 107                        gp_size w, gp_size h, gp_pixel pixel)
 108 {
 109         if (w == 0 || h == 0)
 110                 return;
 111
 112         gp_fill_rect_xyxy(pixmap, x, y, x + w - 1, y + h - 1, pixel);
 113 }