diff options
Diffstat (limited to 'gtk/gtkcssimagegradient.c')
| -rw-r--r-- | gtk/gtkcssimagegradient.c | 507 |
1 files changed, 0 insertions, 507 deletions
diff --git a/gtk/gtkcssimagegradient.c b/gtk/gtkcssimagegradient.c deleted file mode 100644 index 6ba993ba25..0000000000 --- a/gtk/gtkcssimagegradient.c +++ /dev/null @@ -1,507 +0,0 @@ -/* - * Copyright © 2011 Red Hat Inc. - * - * 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 2.1 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/>. - * - * Authors: Benjamin Otte <otte@gnome.org> - */ - -#include "config.h" - -#define GDK_DISABLE_DEPRECATION_WARNINGS - -#include "gtkcssimagegradientprivate.h" - -#include "gtkcssprovider.h" - -#include "deprecated/gtkgradientprivate.h" -#include "deprecated/gtksymboliccolorprivate.h" - -G_DEFINE_TYPE (GtkCssImageGradient, _gtk_css_image_gradient, GTK_TYPE_CSS_IMAGE) - -static GtkCssImage * -gtk_css_image_gradient_compute (GtkCssImage *image, - guint property_id, - GtkStyleProviderPrivate *provider, - GtkCssStyle *style, - GtkCssStyle *parent_style) -{ - GtkCssImageGradient *gradient = GTK_CSS_IMAGE_GRADIENT (image); - GtkCssImageGradient *copy; - - if (gradient->pattern) - return g_object_ref (gradient); - - copy = g_object_new (GTK_TYPE_CSS_IMAGE_GRADIENT, NULL); - copy->gradient = gtk_gradient_ref (gradient->gradient); - copy->pattern = _gtk_gradient_resolve_full (copy->gradient, provider, style, parent_style); - - return GTK_CSS_IMAGE (copy); -} - -static cairo_pattern_t * -fade_pattern (cairo_pattern_t *pattern, - double opacity) -{ - double x0, y0, x1, y1, r0, r1; - cairo_pattern_t *result; - int i, n; - - switch (cairo_pattern_get_type (pattern)) - { - case CAIRO_PATTERN_TYPE_LINEAR: - cairo_pattern_get_linear_points (pattern, &x0, &y0, &x1, &y1); - result = cairo_pattern_create_linear (x0, y0, x1, y1); - break; - case CAIRO_PATTERN_TYPE_RADIAL: - cairo_pattern_get_radial_circles (pattern, &x0, &y0, &r0, &x1, &y1, &r1); - result = cairo_pattern_create_radial (x0, y0, r0, x1, y1, r1); - break; - default: - g_return_val_if_reached (NULL); - } - - cairo_pattern_get_color_stop_count (pattern, &n); - for (i = 0; i < n; i++) - { - double o, r, g, b, a; - - cairo_pattern_get_color_stop_rgba (pattern, i, &o, &r, &g, &b, &a); - cairo_pattern_add_color_stop_rgba (result, o, r, g, b, a * opacity); - } - - return result; -} - -static cairo_pattern_t * -transition_pattern (cairo_pattern_t *start, - cairo_pattern_t *end, - double progress) -{ - double sx0, sy0, sx1, sy1, sr0, sr1, ex0, ey0, ex1, ey1, er0, er1; - cairo_pattern_t *result; - int i, n; - - progress = CLAMP (progress, 0.0, 1.0); - - if (end == NULL) - return fade_pattern (start, 1.0 - progress); - - g_assert (cairo_pattern_get_type (start) == cairo_pattern_get_type (end)); - - switch (cairo_pattern_get_type (start)) - { - case CAIRO_PATTERN_TYPE_LINEAR: - cairo_pattern_get_linear_points (start, &sx0, &sy0, &sx1, &sy1); - cairo_pattern_get_linear_points (end, &ex0, &ey0, &ex1, &ey1); - result = cairo_pattern_create_linear ((1 - progress) * sx0 + progress * ex0, - (1 - progress) * sx1 + progress * ex1, - (1 - progress) * sy0 + progress * ey0, - (1 - progress) * sy1 + progress * ey1); - break; - case CAIRO_PATTERN_TYPE_RADIAL: - cairo_pattern_get_radial_circles (start, &sx0, &sy0, &sr0, &sx1, &sy1, &sr1); - cairo_pattern_get_radial_circles (end, &ex0, &ey0, &er0, &ex1, &ey1, &er1); - result = cairo_pattern_create_radial ((1 - progress) * sx0 + progress * ex0, - (1 - progress) * sy0 + progress * ey0, - (1 - progress) * sr0 + progress * er0, - (1 - progress) * sx1 + progress * ex1, - (1 - progress) * sy1 + progress * ey1, - (1 - progress) * sr1 + progress * er1); - break; - default: - g_return_val_if_reached (NULL); - } - - cairo_pattern_get_color_stop_count (start, &n); - for (i = 0; i < n; i++) - { - double so, sr, sg, sb, sa, eo, er, eg, eb, ea; - - cairo_pattern_get_color_stop_rgba (start, i, &so, &sr, &sg, &sb, &sa); - cairo_pattern_get_color_stop_rgba (end, i, &eo, &er, &eg, &eb, &ea); - - cairo_pattern_add_color_stop_rgba (result, - (1 - progress) * so + progress * eo, - (1 - progress) * sr + progress * er, - (1 - progress) * sg + progress * eg, - (1 - progress) * sb + progress * eb, - (1 - progress) * sa + progress * ea); - } - - return result; -} - -static GtkCssImage * -gtk_css_image_gradient_transition (GtkCssImage *start_image, - GtkCssImage *end_image, - guint property_id, - double progress) -{ - GtkGradient *start_gradient, *end_gradient, *gradient; - cairo_pattern_t *start_pattern, *end_pattern; - GtkCssImageGradient *result; - - start_gradient = GTK_CSS_IMAGE_GRADIENT (start_image)->gradient; - start_pattern = GTK_CSS_IMAGE_GRADIENT (start_image)->pattern; - if (end_image == NULL) - { - end_gradient = NULL; - end_pattern = NULL; - } - else - { - if (!GTK_IS_CSS_IMAGE_GRADIENT (end_image)) - return GTK_CSS_IMAGE_CLASS (_gtk_css_image_gradient_parent_class)->transition (start_image, end_image, property_id, progress); - - end_gradient = GTK_CSS_IMAGE_GRADIENT (end_image)->gradient; - end_pattern = GTK_CSS_IMAGE_GRADIENT (end_image)->pattern; - } - - gradient = _gtk_gradient_transition (start_gradient, end_gradient, property_id, progress); - if (gradient == NULL) - return GTK_CSS_IMAGE_CLASS (_gtk_css_image_gradient_parent_class)->transition (start_image, end_image, property_id, progress); - - result = g_object_new (GTK_TYPE_CSS_IMAGE_GRADIENT, NULL); - result->gradient = gradient; - result->pattern = transition_pattern (start_pattern, end_pattern, progress); - - return GTK_CSS_IMAGE (result); -} - -static gboolean -gtk_css_image_gradient_draw_circle (GtkCssImageGradient *image, - cairo_t *cr, - double width, - double height) -{ - cairo_pattern_t *pattern = image->pattern; - double x0, y0, x1, y1, r0, r1; - GdkRGBA color0, color1; - double offset0, offset1; - int n_stops; - - if (cairo_pattern_get_type (pattern) != CAIRO_PATTERN_TYPE_RADIAL) - return FALSE; - if (cairo_pattern_get_extend (pattern) != CAIRO_EXTEND_PAD) - return FALSE; - - cairo_pattern_get_radial_circles (pattern, &x0, &y0, &r0, &x1, &y1, &r1); - - if (x0 != x1 || - y0 != y1 || - r0 != 0.0) - return FALSE; - - cairo_pattern_get_color_stop_count (pattern, &n_stops); - if (n_stops != 2) - return FALSE; - - cairo_pattern_get_color_stop_rgba (pattern, 0, &offset0, &color0.red, &color0.green, &color0.blue, &color0.alpha); - cairo_pattern_get_color_stop_rgba (pattern, 1, &offset1, &color1.red, &color1.green, &color1.blue, &color1.alpha); - if (offset0 != offset1) - return FALSE; - - cairo_scale (cr, width, height); - - cairo_rectangle (cr, 0, 0, 1, 1); - cairo_clip (cr); - - gdk_cairo_set_source_rgba (cr, &color1); - cairo_paint (cr); - - gdk_cairo_set_source_rgba (cr, &color0); - cairo_arc (cr, x1, y1, r1 * offset1, 0, 2 * G_PI); - cairo_fill (cr); - - return TRUE; -} - -static void -gtk_css_image_gradient_draw (GtkCssImage *image, - cairo_t *cr, - double width, - double height) -{ - GtkCssImageGradient *gradient = GTK_CSS_IMAGE_GRADIENT (image); - - if (!gradient->pattern) - { - g_warning ("trying to paint unresolved gradient"); - return; - } - - if (gtk_css_image_gradient_draw_circle (gradient, cr, width, height)) - return; - - cairo_scale (cr, width, height); - - cairo_rectangle (cr, 0, 0, 1, 1); - cairo_set_source (cr, gradient->pattern); - cairo_fill (cr); -} - -static gboolean -gtk_css_image_gradient_parse (GtkCssImage *image, - GtkCssParser *parser) -{ - GtkCssImageGradient *gradient = GTK_CSS_IMAGE_GRADIENT (image); - - gradient->gradient = _gtk_gradient_parse (parser); - - return gradient->gradient != NULL; -} - -static void -gtk_css_image_gradient_print (GtkCssImage *image, - GString *string) -{ - GtkCssImageGradient *gradient = GTK_CSS_IMAGE_GRADIENT (image); - char *s; - - s = gtk_gradient_to_string (gradient->gradient); - g_string_append (string, s); - g_free (s); -} - -static void -gtk_css_image_gradient_dispose (GObject *object) -{ - GtkCssImageGradient *gradient = GTK_CSS_IMAGE_GRADIENT (object); - - if (gradient->gradient) - { - gtk_gradient_unref (gradient->gradient); - gradient->gradient = NULL; - } - if (gradient->pattern) - { - cairo_pattern_destroy (gradient->pattern); - gradient->pattern = NULL; - } - - G_OBJECT_CLASS (_gtk_css_image_gradient_parent_class)->dispose (object); -} - -static void -_gtk_css_image_gradient_class_init (GtkCssImageGradientClass *klass) -{ - GtkCssImageClass *image_class = GTK_CSS_IMAGE_CLASS (klass); - GObjectClass *object_class = G_OBJECT_CLASS (klass); - - image_class->compute = gtk_css_image_gradient_compute; - image_class->transition = gtk_css_image_gradient_transition; - image_class->draw = gtk_css_image_gradient_draw; - image_class->parse = gtk_css_image_gradient_parse; - image_class->print = gtk_css_image_gradient_print; - - object_class->dispose = gtk_css_image_gradient_dispose; -} - -static void -_gtk_css_image_gradient_init (GtkCssImageGradient *image_gradient) -{ -} - -GtkGradient * -_gtk_gradient_parse (GtkCssParser *parser) -{ - GtkGradient *gradient; - cairo_pattern_type_t type; - gdouble coords[6]; - guint i; - - g_return_val_if_fail (parser != NULL, NULL); - - if (!_gtk_css_parser_try (parser, "-gtk-gradient", TRUE)) - { - _gtk_css_parser_error (parser, - "Expected '-gtk-gradient'"); - return NULL; - } - - if (!_gtk_css_parser_try (parser, "(", TRUE)) - { - _gtk_css_parser_error (parser, - "Expected '(' after '-gtk-gradient'"); - return NULL; - } - - /* Parse gradient type */ - if (_gtk_css_parser_try (parser, "linear", TRUE)) - type = CAIRO_PATTERN_TYPE_LINEAR; - else if (_gtk_css_parser_try (parser, "radial", TRUE)) - type = CAIRO_PATTERN_TYPE_RADIAL; - else - { - _gtk_css_parser_error (parser, - "Gradient type must be 'radial' or 'linear'"); - return NULL; - } - - /* Parse start/stop position parameters */ - for (i = 0; i < 2; i++) - { - if (! _gtk_css_parser_try (parser, ",", TRUE)) - { - _gtk_css_parser_error (parser, - "Expected ','"); - return NULL; - } - - if (_gtk_css_parser_try (parser, "left", TRUE)) - coords[i * 3] = 0; - else if (_gtk_css_parser_try (parser, "right", TRUE)) - coords[i * 3] = 1; - else if (_gtk_css_parser_try (parser, "center", TRUE)) - coords[i * 3] = 0.5; - else if (!_gtk_css_parser_try_double (parser, &coords[i * 3])) - { - _gtk_css_parser_error (parser, - "Expected a valid X coordinate"); - return NULL; - } - - if (_gtk_css_parser_try (parser, "top", TRUE)) - coords[i * 3 + 1] = 0; - else if (_gtk_css_parser_try (parser, "bottom", TRUE)) - coords[i * 3 + 1] = 1; - else if (_gtk_css_parser_try (parser, "center", TRUE)) - coords[i * 3 + 1] = 0.5; - else if (!_gtk_css_parser_try_double (parser, &coords[i * 3 + 1])) - { - _gtk_css_parser_error (parser, - "Expected a valid Y coordinate"); - return NULL; - } - - if (type == CAIRO_PATTERN_TYPE_RADIAL) - { - /* Parse radius */ - if (! _gtk_css_parser_try (parser, ",", TRUE)) - { - _gtk_css_parser_error (parser, - "Expected ','"); - return NULL; - } - - if (! _gtk_css_parser_try_double (parser, &coords[(i * 3) + 2])) - { - _gtk_css_parser_error (parser, - "Expected a number for the radius"); - return NULL; - } - } - } - - if (type == CAIRO_PATTERN_TYPE_LINEAR) - gradient = gtk_gradient_new_linear (coords[0], coords[1], coords[3], coords[4]); - else - gradient = gtk_gradient_new_radial (coords[0], coords[1], coords[2], - coords[3], coords[4], coords[5]); - - while (_gtk_css_parser_try (parser, ",", TRUE)) - { - GtkSymbolicColor *color; - gdouble position; - - if (_gtk_css_parser_try (parser, "from", TRUE)) - { - position = 0; - - if (!_gtk_css_parser_try (parser, "(", TRUE)) - { - gtk_gradient_unref (gradient); - _gtk_css_parser_error (parser, - "Expected '('"); - return NULL; - } - - } - else if (_gtk_css_parser_try (parser, "to", TRUE)) - { - position = 1; - - if (!_gtk_css_parser_try (parser, "(", TRUE)) - { - gtk_gradient_unref (gradient); - _gtk_css_parser_error (parser, - "Expected '('"); - return NULL; - } - - } - else if (_gtk_css_parser_try (parser, "color-stop", TRUE)) - { - if (!_gtk_css_parser_try (parser, "(", TRUE)) - { - gtk_gradient_unref (gradient); - _gtk_css_parser_error (parser, - "Expected '('"); - return NULL; - } - - if (!_gtk_css_parser_try_double (parser, &position)) - { - gtk_gradient_unref (gradient); - _gtk_css_parser_error (parser, - "Expected a valid number"); - return NULL; - } - - if (!_gtk_css_parser_try (parser, ",", TRUE)) - { - gtk_gradient_unref (gradient); - _gtk_css_parser_error (parser, - "Expected a comma"); - return NULL; - } - } - else - { - gtk_gradient_unref (gradient); - _gtk_css_parser_error (parser, - "Not a valid color-stop definition"); - return NULL; - } - - color = _gtk_css_symbolic_value_new (parser); - if (color == NULL) - { - gtk_gradient_unref (gradient); - return NULL; - } - - gtk_gradient_add_color_stop (gradient, position, color); - gtk_symbolic_color_unref (color); - - if (!_gtk_css_parser_try (parser, ")", TRUE)) - { - gtk_gradient_unref (gradient); - _gtk_css_parser_error (parser, - "Expected ')'"); - return NULL; - } - } - - if (!_gtk_css_parser_try (parser, ")", TRUE)) - { - gtk_gradient_unref (gradient); - _gtk_css_parser_error (parser, - "Expected ')'"); - return NULL; - } - - return gradient; -} |