gtkcssshadowsvalue.c 8.11 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
/* GTK - The GIMP Toolkit
 * Copyright (C) 2011 Red Hat, Inc.
 *
 * Author: Cosimo Cecchi <cosimoc@gnome.org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
 */

#include "config.h"

#include "gtkcssshadowsvalueprivate.h"

#include "gtkcssshadowvalueprivate.h"

#include <string.h>

struct _GtkCssValue {
  GTK_CSS_VALUE_BASE
  guint         len;
  GtkCssValue  *values[1];
};

34 35 36
static GtkCssValue *    gtk_css_shadows_value_new       (GtkCssValue **values,
                                                         guint         len);

37 38 39 40 41 42 43 44 45 46 47 48 49
static void
gtk_css_value_shadows_free (GtkCssValue *value)
{
  guint i;

  for (i = 0; i < value->len; i++)
    {
      _gtk_css_value_unref (value->values[i]);
    }

  g_slice_free1 (sizeof (GtkCssValue) + sizeof (GtkCssValue *) * (value->len - 1), value);
}

50
static GtkCssValue *
51 52 53 54 55 56
gtk_css_value_shadows_compute (GtkCssValue             *value,
                               guint                    property_id,
                               GtkStyleProviderPrivate *provider,
                               GtkCssComputedValues    *values,
                               GtkCssComputedValues    *parent_values,
                               GtkCssDependencies      *dependencies)
57 58
{
  GtkCssValue *result;
59
  GtkCssDependencies child_deps;
60 61 62 63 64 65 66 67
  guint i;

  if (value->len == 0)
    return _gtk_css_value_ref (value);

  result = gtk_css_shadows_value_new (value->values, value->len);
  for (i = 0; i < value->len; i++)
    {
68
      result->values[i] = _gtk_css_value_compute (value->values[i], property_id, provider, values, parent_values, &child_deps);
69
      *dependencies = _gtk_css_dependencies_union (*dependencies, child_deps);
70 71 72 73 74
    }

  return result;
}

75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97
static gboolean
gtk_css_value_shadows_equal (const GtkCssValue *value1,
                             const GtkCssValue *value2)
{
  guint i;

  /* XXX: Should we fill up here? */
  if (value1->len != value2->len)
    return FALSE;

  for (i = 0; i < value1->len; i++)
    {
      if (!_gtk_css_value_equal (value1->values[i],
                                 value2->values[i]))
        return FALSE;
    }

  return TRUE;
}

static GtkCssValue *
gtk_css_value_shadows_transition (GtkCssValue *start,
                                  GtkCssValue *end,
98
                                  guint        property_id,
99 100
                                  double       progress)
{
101 102
  guint i, len;
  GtkCssValue **values;
103 104 105 106 107 108

  /* catches the important case of 2 none values */
  if (start == end)
    return _gtk_css_value_ref (start);

  if (start->len > end->len)
109
    len = start->len;
110
  else
111 112 113
    len = end->len;

  values = g_newa (GtkCssValue *, len);
114 115 116

  for (i = 0; i < MIN (start->len, end->len); i++)
    {
117 118 119 120 121 122 123
      values[i] = _gtk_css_value_transition (start->values[i], end->values[i], property_id, progress);
      if (values[i] == NULL)
        {
          while (i--)
            _gtk_css_value_unref (values[i]);
          return NULL;
        }
124 125 126
    }
  if (start->len > end->len)
    {
127
      for (; i < len; i++)
128 129
        {
          GtkCssValue *fill = _gtk_css_shadow_value_new_for_transition (start->values[i]);
130
          values[i] = _gtk_css_value_transition (start->values[i], fill, property_id, progress);
131
          _gtk_css_value_unref (fill);
132 133 134 135 136 137 138

          if (values[i] == NULL)
            {
              while (i--)
                _gtk_css_value_unref (values[i]);
              return NULL;
            }
139 140 141 142
        }
    }
  else
    {
143
      for (; i < len; i++)
144 145
        {
          GtkCssValue *fill = _gtk_css_shadow_value_new_for_transition (end->values[i]);
146
          values[i] = _gtk_css_value_transition (fill, end->values[i], property_id, progress);
147
          _gtk_css_value_unref (fill);
148 149 150 151 152 153 154

          if (values[i] == NULL)
            {
              while (i--)
                _gtk_css_value_unref (values[i]);
              return NULL;
            }
155 156 157
        }
    }

158
  return gtk_css_shadows_value_new (values, len);
159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182
}

static void
gtk_css_value_shadows_print (const GtkCssValue *value,
                             GString           *string)
{
  guint i;

  if (value->len == 0)
    {
      g_string_append (string, "none");
      return;
    }

  for (i = 0; i < value->len; i++)
    {
      if (i > 0)
        g_string_append (string, ", ");
      _gtk_css_value_print (value->values[i], string);
    }
}

static const GtkCssValueClass GTK_CSS_VALUE_SHADOWS = {
  gtk_css_value_shadows_free,
183
  gtk_css_value_shadows_compute,
184 185 186 187 188 189 190 191 192 193 194 195 196
  gtk_css_value_shadows_equal,
  gtk_css_value_shadows_transition,
  gtk_css_value_shadows_print
};

static GtkCssValue none_singleton = { &GTK_CSS_VALUE_SHADOWS, 1, 0, { NULL } };

GtkCssValue *
_gtk_css_shadows_value_new_none (void)
{
  return _gtk_css_value_ref (&none_singleton);
}

197
static GtkCssValue *
198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289
gtk_css_shadows_value_new (GtkCssValue **values,
                           guint         len)
{
  GtkCssValue *result;
           
  g_return_val_if_fail (values != NULL, NULL);
  g_return_val_if_fail (len > 0, NULL);
         
  result = _gtk_css_value_alloc (&GTK_CSS_VALUE_SHADOWS, sizeof (GtkCssValue) + sizeof (GtkCssValue *) * (len - 1));
  result->len = len;
  memcpy (&result->values[0], values, sizeof (GtkCssValue *) * len);
            
  return result;
}

GtkCssValue *
_gtk_css_shadows_value_parse (GtkCssParser *parser)
{
  GtkCssValue *value, *result;
  GPtrArray *values;

  if (_gtk_css_parser_try (parser, "none", TRUE))
    return _gtk_css_shadows_value_new_none ();

  values = g_ptr_array_new ();

  do {
    value = _gtk_css_shadow_value_parse (parser);

    if (value == NULL)
      {
        g_ptr_array_set_free_func (values, (GDestroyNotify) _gtk_css_value_unref);
        g_ptr_array_free (values, TRUE);
        return NULL;
      }

    g_ptr_array_add (values, value);
  } while (_gtk_css_parser_try (parser, ",", TRUE));

  result = gtk_css_shadows_value_new ((GtkCssValue **) values->pdata, values->len);
  g_ptr_array_free (values, TRUE);
  return result;
}

void
_gtk_css_shadows_value_paint_layout (const GtkCssValue *shadows,
                                     cairo_t           *cr,
                                     PangoLayout       *layout)
{
  guint i;

  g_return_if_fail (shadows->class == &GTK_CSS_VALUE_SHADOWS);

  for (i = 0; i < shadows->len; i++)
    {
      _gtk_css_shadow_value_paint_layout (shadows->values[i], cr, layout);
    }
}

void
_gtk_css_shadows_value_paint_icon (const GtkCssValue *shadows,
                                   cairo_t           *cr)
{
  guint i;

  g_return_if_fail (shadows->class == &GTK_CSS_VALUE_SHADOWS);

  for (i = 0; i < shadows->len; i++)
    {
      _gtk_css_shadow_value_paint_icon (shadows->values[i], cr);
    }
}

void
_gtk_css_shadows_value_paint_spinner (const GtkCssValue *shadows,
                                      cairo_t           *cr,
                                      gdouble            radius,
                                      gdouble            progress)
{
  guint i;

  g_return_if_fail (shadows->class == &GTK_CSS_VALUE_SHADOWS);

  for (i = 0; i < shadows->len; i++)
    {
      _gtk_css_shadow_value_paint_spinner (shadows->values[i], cr, radius, progress);
    }
}

void
_gtk_css_shadows_value_paint_box (const GtkCssValue   *shadows,
                                  cairo_t             *cr,
290 291
                                  const GtkRoundedBox *padding_box,
                                  gboolean             inset)
292 293 294 295 296 297 298
{
  guint i;

  g_return_if_fail (shadows->class == &GTK_CSS_VALUE_SHADOWS);

  for (i = 0; i < shadows->len; i++)
    {
299 300
      if (inset == _gtk_css_shadow_value_get_inset (shadows->values[i]))
        _gtk_css_shadow_value_paint_box (shadows->values[i], cr, padding_box);
301 302
    }
}