win32: Add a CssImage implementation

1 files changed, 234 insertions, 0 deletions

diff --git a/gtk/gtkcssimagewin32.c b/gtk/gtkcssimagewin32.c
new file mode 100644
index 0000000000..3b89f90cfd
--- /dev/null
+++ b/gtk/gtkcssimagewin32.c
@@ -0,0 +1,234 @@
+/*
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+#include "config.h"
+
+#include "gtkcssimagewin32private.h"
+
+#include "gtkcssprovider.h"
+
+G_DEFINE_TYPE (GtkCssImageWin32, _gtk_css_image_win32, GTK_TYPE_CSS_IMAGE)
+
+static void
+gtk_css_image_win32_draw (GtkCssImage        *image,
+                          cairo_t            *cr,
+                          double              width,
+                          double              height)
+{
+  GtkCssImageWin32 *wimage = GTK_CSS_IMAGE_WIN32 (image);
+  cairo_surface_t *surface;
+
+  surface = _gtk_win32_theme_part_create_surface (wimage->theme, wimage->part, wimage->state, wimage->margins,
+						  width, height);
+  
+  if (wimage->state2 >= 0)
+    {
+      cairo_surface_t *surface2;
+      cairo_t *cr;
+
+      surface2 = _gtk_win32_theme_part_create_surface (wimage->theme, wimage->part2, wimage->state2, wimage->margins,
+						       width, height);
+
+      cr = cairo_create (surface);
+
+      cairo_set_source_surface (cr, surface2, 0, 0);
+      cairo_paint_with_alpha (cr, wimage->over_alpha);
+      
+      cairo_destroy (cr);
+
+      cairo_surface_destroy (surface2);
+    }
+
+  cairo_set_source_surface (cr, surface, 0, 0);
+  cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_PAD);
+  cairo_rectangle (cr, 0, 0, width, height);
+  cairo_fill (cr);
+
+  cairo_surface_destroy (surface);
+}
+
+static gboolean
+gtk_css_image_win32_parse (GtkCssImage  *image,
+                           GtkCssParser *parser,
+                           GFile        *base)
+{
+  GtkCssImageWin32 *wimage = GTK_CSS_IMAGE_WIN32 (image);
+  char *class;
+
+  if (!_gtk_css_parser_try (parser, "-gtk-win32-theme-part", TRUE))
+    {
+      _gtk_css_parser_error (parser, "'-gtk-win32-theme-part'");
+      return FALSE;
+    }
+  
+  if (!_gtk_css_parser_try (parser, "(", TRUE))
+    {
+      _gtk_css_parser_error (parser,
+                             "Expected '(' after '-gtk-win32-theme-part'");
+      return FALSE;
+    }
+  
+  class = _gtk_css_parser_try_name (parser, TRUE);
+  if (class == NULL)
+    {
+      _gtk_css_parser_error (parser,
+                             "Expected name as first argument to  '-gtk-win32-theme-part'");
+      return FALSE;
+    }
+  wimage->theme = _gtk_win32_lookup_htheme_by_classname (class);
+  g_free (class);
+
+  if (! _gtk_css_parser_try (parser, ",", TRUE))
+    {
+      _gtk_css_parser_error (parser, "Expected ','");
+      return FALSE;
+    }
+
+  if (!_gtk_css_parser_try_int (parser, &wimage->part))
+    {
+      _gtk_css_parser_error (parser, "Expected a valid integer value");
+      return FALSE;
+    }
+
+  if (!_gtk_css_parser_try_int (parser, &wimage->state))
+    {
+      _gtk_css_parser_error (parser, "Expected a valid integer value");
+      return FALSE;
+    }
+
+  while ( _gtk_css_parser_try (parser, ",", TRUE))
+    {
+      if ( _gtk_css_parser_try (parser, "over", TRUE))
+        {
+          if (!_gtk_css_parser_try (parser, "(", TRUE))
+            {
+              _gtk_css_parser_error (parser,
+                                     "Expected '(' after 'over'");
+              return FALSE;
+            }
+
+          if (!_gtk_css_parser_try_int (parser, &wimage->part2))
+            {
+              _gtk_css_parser_error (parser, "Expected a valid integer value");
+              return FALSE;
+            }
+
+          if (!_gtk_css_parser_try_int (parser, &wimage->state2))
+            {
+              _gtk_css_parser_error (parser, "Expected a valid integer value");
+              return FALSE;
+            }
+
+          if ( _gtk_css_parser_try (parser, ",", TRUE))
+            {
+              if (!_gtk_css_parser_try_double (parser, &wimage->over_alpha))
+                {
+                  _gtk_css_parser_error (parser, "Expected a valid double value");
+                  return FALSE;
+                }
+            }
+
+          if (!_gtk_css_parser_try (parser, ")", TRUE))
+            {
+              _gtk_css_parser_error (parser,
+                                     "Expected ')' at end of 'over'");
+              return FALSE;
+            }
+        }
+      else if ( _gtk_css_parser_try (parser, "margins", TRUE))
+        {
+          guint i;
+
+          if (!_gtk_css_parser_try (parser, "(", TRUE))
+            {
+              _gtk_css_parser_error (parser,
+                                     "Expected '(' after 'margins'");
+              return FALSE;
+            }
+
+          for (i = 0; i < 4; i++)
+            {
+              if (!_gtk_css_parser_try_int (parser, &wimage->margins[i]))
+                break;
+            }
+          
+          if (i == 0)
+            {
+              _gtk_css_parser_error (parser, "Expected valid margins");
+              return FALSE;
+            }
+
+          if (i == 1)
+            wimage->margins[1] = wimage->margins[0];
+          if (i <= 2)
+            wimage->margins[2] = wimage->margins[1];
+          if (i <= 3)
+            wimage->margins[3] = wimage->margins[2];
+          
+          if (!_gtk_css_parser_try (parser, ")", TRUE))
+            {
+              _gtk_css_parser_error (parser,
+                                     "Expected ')' at end of 'margins'");
+              return FALSE;
+            }
+        }
+      else
+        {
+          _gtk_css_parser_error (parser,
+                                 "Expected identifier");
+          return FALSE;
+        }
+    }
+
+  if (!_gtk_css_parser_try (parser, ")", TRUE))
+    {
+      _gtk_css_parser_error (parser,
+			     "Expected ')'");
+      return FALSE;
+    }
+  
+  return TRUE;
+}
+
+static void
+gtk_css_image_win32_print (GtkCssImage *image,
+                           GString     *string)
+{
+  g_string_append (string, "none /* printing win32 theme components is not implemented */");
+}
+
+static void
+_gtk_css_image_win32_class_init (GtkCssImageWin32Class *klass)
+{
+  GtkCssImageClass *image_class = GTK_CSS_IMAGE_CLASS (klass);
+
+  image_class->draw = gtk_css_image_win32_draw;
+  image_class->parse = gtk_css_image_win32_parse;
+  image_class->print = gtk_css_image_win32_print;
+}
+
+static void
+_gtk_css_image_win32_init (GtkCssImageWin32 *wimage)
+{
+  wimage->over_alpha = 1.0;
+  wimage->part2 = -1;
+  wimage->state2 = -1;
+}
+