389 lines
13 KiB
C
389 lines
13 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2011 Red Hat, Inc.
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*
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* Author: Cosimo Cecchi <cosimoc@gnome.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gtkcssshadowvalueprivate.h"
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#include "gtkcssnumbervalueprivate.h"
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#include "gtkcssrgbavalueprivate.h"
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#include "gtkstylecontextprivate.h"
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#include "gtksymboliccolorprivate.h"
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#include "gtkthemingengineprivate.h"
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#include "gtkpango.h"
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struct _GtkCssValue {
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GTK_CSS_VALUE_BASE
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guint inset :1;
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GtkCssValue *hoffset;
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GtkCssValue *voffset;
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GtkCssValue *radius;
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GtkCssValue *spread;
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GtkCssValue *color;
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};
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static GtkCssValue * gtk_css_shadow_value_new (GtkCssValue *hoffset,
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GtkCssValue *voffset,
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GtkCssValue *radius,
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GtkCssValue *spread,
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gboolean inset,
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GtkCssValue *color);
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static void
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gtk_css_value_shadow_free (GtkCssValue *shadow)
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{
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_gtk_css_value_unref (shadow->hoffset);
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_gtk_css_value_unref (shadow->voffset);
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_gtk_css_value_unref (shadow->radius);
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_gtk_css_value_unref (shadow->spread);
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_gtk_css_value_unref (shadow->color);
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g_slice_free (GtkCssValue, shadow);
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}
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static gboolean
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gtk_css_value_shadow_equal (const GtkCssValue *shadow1,
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const GtkCssValue *shadow2)
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{
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return shadow1->inset == shadow2->inset
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&& _gtk_css_value_equal (shadow1->hoffset, shadow2->hoffset)
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&& _gtk_css_value_equal (shadow1->voffset, shadow2->voffset)
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&& _gtk_css_value_equal (shadow1->radius, shadow2->radius)
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&& _gtk_css_value_equal (shadow1->spread, shadow2->spread)
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&& _gtk_css_value_equal (shadow1->color, shadow2->color);
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}
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static GtkCssValue *
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gtk_css_value_shadow_transition (GtkCssValue *start,
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GtkCssValue *end,
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double progress)
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{
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if (start->inset != end->inset)
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return NULL;
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return gtk_css_shadow_value_new (_gtk_css_value_transition (start->hoffset, end->hoffset, progress),
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_gtk_css_value_transition (start->voffset, end->voffset, progress),
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_gtk_css_value_transition (start->radius, end->radius, progress),
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_gtk_css_value_transition (start->spread, end->spread, progress),
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start->inset,
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_gtk_css_value_transition (start->color, end->color, progress));
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}
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static void
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gtk_css_value_shadow_print (const GtkCssValue *shadow,
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GString *string)
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{
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_gtk_css_value_print (shadow->hoffset, string);
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g_string_append_c (string, ' ');
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_gtk_css_value_print (shadow->voffset, string);
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g_string_append_c (string, ' ');
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if (_gtk_css_number_value_get (shadow->radius, 100) != 0 ||
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_gtk_css_number_value_get (shadow->spread, 100) != 0)
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{
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_gtk_css_value_print (shadow->radius, string);
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g_string_append_c (string, ' ');
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}
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if (_gtk_css_number_value_get (shadow->spread, 100) != 0)
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{
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_gtk_css_value_print (shadow->spread, string);
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g_string_append_c (string, ' ');
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}
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_gtk_css_value_print (shadow->color, string);
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if (shadow->inset)
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g_string_append (string, " inset");
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}
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static const GtkCssValueClass GTK_CSS_VALUE_SHADOW = {
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gtk_css_value_shadow_free,
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gtk_css_value_shadow_equal,
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gtk_css_value_shadow_transition,
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gtk_css_value_shadow_print
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};
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static GtkCssValue *
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gtk_css_shadow_value_new (GtkCssValue *hoffset,
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GtkCssValue *voffset,
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GtkCssValue *radius,
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GtkCssValue *spread,
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gboolean inset,
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GtkCssValue *color)
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{
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GtkCssValue *retval;
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retval = _gtk_css_value_new (GtkCssValue, >K_CSS_VALUE_SHADOW);
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retval->hoffset = hoffset;
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retval->voffset = voffset;
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retval->radius = radius;
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retval->spread = spread;
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retval->inset = inset;
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retval->color = color;
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return retval;
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}
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GtkCssValue *
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_gtk_css_shadow_value_new_for_transition (GtkCssValue *target)
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{
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GdkRGBA transparent = { 0, 0, 0, 0 };
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g_return_val_if_fail (target->class == >K_CSS_VALUE_SHADOW, NULL);
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return gtk_css_shadow_value_new (_gtk_css_number_value_new (0, GTK_CSS_PX),
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_gtk_css_number_value_new (0, GTK_CSS_PX),
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_gtk_css_number_value_new (0, GTK_CSS_PX),
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_gtk_css_number_value_new (0, GTK_CSS_PX),
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target->inset,
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_gtk_css_rgba_value_new_from_rgba (&transparent));
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}
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static gboolean
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value_is_done_parsing (GtkCssParser *parser)
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{
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return _gtk_css_parser_is_eof (parser) ||
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_gtk_css_parser_begins_with (parser, ',') ||
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_gtk_css_parser_begins_with (parser, ';') ||
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_gtk_css_parser_begins_with (parser, '}');
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}
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GtkCssValue *
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_gtk_css_shadow_value_parse (GtkCssParser *parser)
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{
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enum {
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HOFFSET,
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VOFFSET,
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RADIUS,
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SPREAD,
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COLOR,
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N_VALUES
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};
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GtkCssValue *values[N_VALUES] = { NULL, };
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gboolean inset;
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guint i;
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inset = _gtk_css_parser_try (parser, "inset", TRUE);
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do
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{
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if (values[HOFFSET] == NULL &&
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_gtk_css_parser_has_number (parser))
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{
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values[HOFFSET] = _gtk_css_number_value_parse (parser,
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GTK_CSS_PARSE_LENGTH
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| GTK_CSS_NUMBER_AS_PIXELS);
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if (values[HOFFSET] == NULL)
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goto fail;
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values[VOFFSET] = _gtk_css_number_value_parse (parser,
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GTK_CSS_PARSE_LENGTH
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| GTK_CSS_NUMBER_AS_PIXELS);
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if (values[VOFFSET] == NULL)
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goto fail;
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if (_gtk_css_parser_has_number (parser))
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{
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values[RADIUS] = _gtk_css_number_value_parse (parser,
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GTK_CSS_PARSE_LENGTH
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| GTK_CSS_POSITIVE_ONLY
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| GTK_CSS_NUMBER_AS_PIXELS);
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if (values[RADIUS] == NULL)
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goto fail;
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}
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else
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values[RADIUS] = _gtk_css_number_value_new (0.0, GTK_CSS_PX);
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if (_gtk_css_parser_has_number (parser))
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{
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values[SPREAD] = _gtk_css_number_value_parse (parser,
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GTK_CSS_PARSE_LENGTH
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| GTK_CSS_NUMBER_AS_PIXELS);
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if (values[SPREAD] == NULL)
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goto fail;
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}
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else
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values[SPREAD] = _gtk_css_number_value_new (0.0, GTK_CSS_PX);
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}
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else if (!inset && _gtk_css_parser_try (parser, "inset", TRUE))
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{
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if (values[HOFFSET] == NULL)
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goto fail;
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inset = TRUE;
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break;
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}
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else if (values[COLOR] == NULL)
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{
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values[COLOR] = _gtk_css_symbolic_value_new (parser);
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if (values[COLOR] == NULL)
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goto fail;
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}
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else
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{
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/* We parsed everything and there's still stuff left?
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* Pretend we didn't notice and let the normal code produce
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* a 'junk at end of value' error */
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goto fail;
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}
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}
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while (values[HOFFSET] == NULL || !value_is_done_parsing (parser));
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if (values[COLOR] == NULL)
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values[COLOR] = _gtk_css_symbolic_value_new_take_symbolic_color (
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gtk_symbolic_color_ref (
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_gtk_symbolic_color_get_current_color ()));
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return gtk_css_shadow_value_new (values[HOFFSET], values[VOFFSET],
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values[RADIUS], values[SPREAD],
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inset, values[COLOR]);
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fail:
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for (i = 0; i < N_VALUES; i++)
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{
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if (values[i])
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_gtk_css_value_unref (values[i]);
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}
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return NULL;
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}
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GtkCssValue *
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_gtk_css_shadow_value_compute (GtkCssValue *shadow,
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GtkStyleContext *context)
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{
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GdkRGBA transparent = { 0, 0, 0, 0 };
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GtkCssValue *color, *fallback;
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fallback = _gtk_css_symbolic_value_new_take_symbolic_color (gtk_symbolic_color_new_literal (&transparent));
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color = _gtk_css_rgba_value_compute_from_symbolic (shadow->color,
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fallback,
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context,
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FALSE);
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_gtk_css_value_unref (fallback);
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return gtk_css_shadow_value_new (_gtk_css_number_value_compute (shadow->hoffset, context),
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_gtk_css_number_value_compute (shadow->voffset, context),
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_gtk_css_number_value_compute (shadow->radius, context),
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_gtk_css_number_value_compute (shadow->spread, context),
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shadow->inset,
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color);
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}
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void
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_gtk_css_shadow_value_paint_layout (const GtkCssValue *shadow,
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cairo_t *cr,
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PangoLayout *layout)
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{
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g_return_if_fail (shadow->class == >K_CSS_VALUE_SHADOW);
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if (!cairo_has_current_point (cr))
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cairo_move_to (cr, 0, 0);
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cairo_save (cr);
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cairo_rel_move_to (cr,
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_gtk_css_number_value_get (shadow->hoffset, 0),
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_gtk_css_number_value_get (shadow->voffset, 0));
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gdk_cairo_set_source_rgba (cr, _gtk_css_rgba_value_get_rgba (shadow->color));
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_gtk_pango_fill_layout (cr, layout);
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cairo_rel_move_to (cr,
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- _gtk_css_number_value_get (shadow->hoffset, 0),
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- _gtk_css_number_value_get (shadow->voffset, 0));
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cairo_restore (cr);
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}
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void
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_gtk_css_shadow_value_paint_icon (const GtkCssValue *shadow,
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cairo_t *cr)
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{
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cairo_pattern_t *pattern;
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g_return_if_fail (shadow->class == >K_CSS_VALUE_SHADOW);
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cairo_save (cr);
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pattern = cairo_pattern_reference (cairo_get_source (cr));
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gdk_cairo_set_source_rgba (cr, _gtk_css_rgba_value_get_rgba (shadow->color));
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cairo_translate (cr,
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_gtk_css_number_value_get (shadow->hoffset, 0),
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_gtk_css_number_value_get (shadow->voffset, 0));
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cairo_mask (cr, pattern);
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cairo_restore (cr);
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cairo_pattern_destroy (pattern);
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}
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void
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_gtk_css_shadow_value_paint_spinner (const GtkCssValue *shadow,
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cairo_t *cr,
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gdouble radius,
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gdouble progress)
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{
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g_return_if_fail (shadow->class == >K_CSS_VALUE_SHADOW);
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cairo_save (cr);
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cairo_translate (cr,
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_gtk_css_number_value_get (shadow->hoffset, 0),
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_gtk_css_number_value_get (shadow->voffset, 0));
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_gtk_theming_engine_paint_spinner (cr,
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radius, progress,
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_gtk_css_rgba_value_get_rgba (shadow->color));
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cairo_restore (cr);
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}
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void
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_gtk_css_shadow_value_paint_box (const GtkCssValue *shadow,
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cairo_t *cr,
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const GtkRoundedBox *padding_box)
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{
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GtkRoundedBox box;
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double spread;
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g_return_if_fail (shadow->class == >K_CSS_VALUE_SHADOW);
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cairo_save (cr);
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cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
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_gtk_rounded_box_path (padding_box, cr);
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cairo_clip (cr);
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box = *padding_box;
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_gtk_rounded_box_move (&box,
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_gtk_css_number_value_get (shadow->hoffset, 0),
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_gtk_css_number_value_get (shadow->voffset, 0));
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spread = _gtk_css_number_value_get (shadow->spread, 0);
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_gtk_rounded_box_shrink (&box, spread, spread, spread, spread);
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_gtk_rounded_box_path (&box, cr);
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_gtk_rounded_box_clip_path (padding_box, cr);
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gdk_cairo_set_source_rgba (cr, _gtk_css_rgba_value_get_rgba (shadow->color));
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cairo_fill (cr);
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cairo_restore (cr);
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}
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