pixman/pixman-solid-fill.c

   1 /*
   2  * Copyright © 2000 SuSE, Inc.
   3  * Copyright © 2007, 2009 Red Hat, Inc.
   4  * Copyright © 2009 Soren Sandmann
   5  *
   6  * Permission to use, copy, modify, distribute, and sell this software and its
   7  * documentation for any purpose is hereby granted without fee, provided that
   8  * the above copyright notice appear in all copies and that both that
   9  * copyright notice and this permission notice appear in supporting
  10  * documentation, and that the name of SuSE not be used in advertising or
  11  * publicity pertaining to distribution of the software without specific,
  12  * written prior permission.  SuSE makes no representations about the
  13  * suitability of this software for any purpose.  It is provided "as is"
  14  * without express or implied warranty.
  15  *
  16  * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
  18  * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  19  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  20  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  21  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  22  */
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27 #include "pixman-private.h"
  28
  29 static void
  30 solid_fill_get_scanline_32 (pixman_image_t *image,
  31                             int             x,
  32                             int             y,
  33                             int             width,
  34                             uint32_t *      buffer,
  35                             const uint32_t *mask)
  36 {
  37     uint32_t *end = buffer + width;
  38     uint32_t color = image->solid.color_32;
  39
  40     while (buffer < end)
  41         *(buffer++) = color;
  42
  43     return;
  44 }
  45
  46 static void
  47 solid_fill_get_scanline_64 (pixman_image_t *image,
  48                             int             x,
  49                             int             y,
  50                             int             width,
  51                             uint32_t *      buffer,
  52                             const uint32_t *mask)
  53 {
  54     uint64_t *b = (uint64_t *)buffer;
  55     uint64_t *e = b + width;
  56     uint64_t color = image->solid.color_64;
  57
  58     while (b < e)
  59         *(b++) = color;
  60 }
  61
  62 static source_image_class_t
  63 solid_fill_classify (pixman_image_t *image,
  64                      int             x,
  65                      int             y,
  66                      int             width,
  67                      int             height)
  68 {
  69     return SOURCE_IMAGE_CLASS_HORIZONTAL;
  70 }
  71
  72 static void
  73 solid_fill_property_changed (pixman_image_t *image)
  74 {
  75 }
  76
  77 void
  78 _pixman_solid_fill_iter_init (pixman_image_t *image,
  79                               pixman_iter_t  *iter,
  80                               int x, int y, int width, int height,
  81                               uint8_t *buffer, iter_flags_t flags)
  82 {
  83     if (flags & ITER_NARROW)
  84     {
  85         solid_fill_get_scanline_32 (
  86             image, x, y, width, (uint32_t *)buffer, NULL);
  87     }
  88     else
  89     {
  90         solid_fill_get_scanline_64 (
  91             image, x, y, width, (uint32_t *)buffer, NULL);
  92     }
  93
  94     iter->get_scanline = _pixman_iter_get_scanline_noop;
  95 }
  96
  97 static uint32_t
  98 color_to_uint32 (const pixman_color_t *color)
  99 {
 100     return
 101         (color->alpha >> 8 << 24) |
 102         (color->red >> 8 << 16) |
 103         (color->green & 0xff00) |
 104         (color->blue >> 8);
 105 }
 106
 107 static uint64_t
 108 color_to_uint64 (const pixman_color_t *color)
 109 {
 110     return
 111         ((uint64_t)color->alpha << 48) |
 112         ((uint64_t)color->red << 32) |
 113         ((uint64_t)color->green << 16) |
 114         ((uint64_t)color->blue);
 115 }
 116
 117 PIXMAN_EXPORT pixman_image_t *
 118 pixman_image_create_solid_fill (pixman_color_t *color)
 119 {
 120     pixman_image_t *img = _pixman_image_allocate ();
 121
 122     if (!img)
 123         return NULL;
 124
 125     img->type = SOLID;
 126     img->solid.color = *color;
 127     img->solid.color_32 = color_to_uint32 (color);
 128     img->solid.color_64 = color_to_uint64 (color);
 129
 130     img->common.classify = solid_fill_classify;
 131     img->common.property_changed = solid_fill_property_changed;
 132
 133     return img;
 134 }
 135