diff --git a/gtk/Makefile.am b/gtk/Makefile.am index fe64e4afd1..70b6f32e34 100644 --- a/gtk/Makefile.am +++ b/gtk/Makefile.am @@ -412,6 +412,7 @@ gtk_private_h_sources = \ gtkcellareaboxcontextprivate.h \ gtkcontainerprivate.h \ gtkcsscustompropertyprivate.h \ + gtkcssimageprivate.h \ gtkcsslookupprivate.h \ gtkcssparserprivate.h \ gtkcssproviderprivate.h \ @@ -589,6 +590,7 @@ gtk_base_c_sources = \ gtkcomboboxtext.c \ gtkcontainer.c \ gtkcsscustomproperty.c \ + gtkcssimage.c \ gtkcsslookup.c \ gtkcssparser.c \ gtkcssprovider.c \ diff --git a/gtk/gtkcssimage.c b/gtk/gtkcssimage.c new file mode 100644 index 0000000000..2aec9bb866 --- /dev/null +++ b/gtk/gtkcssimage.c @@ -0,0 +1,179 @@ +/* + * 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 + */ + +#include "config.h" + +#include "gtkcssimageprivate.h" + +G_DEFINE_ABSTRACT_TYPE (GtkCssImage, _gtk_css_image, G_TYPE_OBJECT) + +static int +gtk_css_image_real_get_width (GtkCssImage *image) +{ + return 0; +} + +static int +gtk_css_image_real_get_height (GtkCssImage *image) +{ + return 0; +} + +static double +gtk_css_image_real_get_aspect_ratio (GtkCssImage *image) +{ + int width, height; + + width = _gtk_css_image_get_width (image); + height = _gtk_css_image_get_height (image); + + if (width && height) + return (double) width / height; + else + return 0; +} + +static GtkCssImage * +gtk_css_image_real_compute (GtkCssImage *image, + GtkStyleContext *context) +{ + return g_object_ref (image); +} + +static void +_gtk_css_image_class_init (GtkCssImageClass *klass) +{ + klass->get_width = gtk_css_image_real_get_width; + klass->get_height = gtk_css_image_real_get_height; + klass->get_aspect_ratio = gtk_css_image_real_get_aspect_ratio; + klass->compute = gtk_css_image_real_compute; +} + +static void +_gtk_css_image_init (GtkCssImage *image) +{ +} + +int +_gtk_css_image_get_width (GtkCssImage *image) +{ + GtkCssImageClass *klass; + + g_return_val_if_fail (GTK_IS_CSS_IMAGE (image), 0); + + klass = GTK_CSS_IMAGE_GET_CLASS (image); + + return klass->get_width (image); +} + +int +_gtk_css_image_get_height (GtkCssImage *image) +{ + GtkCssImageClass *klass; + + g_return_val_if_fail (GTK_IS_CSS_IMAGE (image), 0); + + klass = GTK_CSS_IMAGE_GET_CLASS (image); + + return klass->get_height (image); +} + +double +_gtk_css_image_get_aspect_ratio (GtkCssImage *image) +{ + GtkCssImageClass *klass; + + g_return_val_if_fail (GTK_IS_CSS_IMAGE (image), 0); + + klass = GTK_CSS_IMAGE_GET_CLASS (image); + + return klass->get_aspect_ratio (image); +} + +GtkCssImage * +_gtk_css_image_compute (GtkCssImage *image, + GtkStyleContext *context) +{ + GtkCssImageClass *klass; + + g_return_val_if_fail (GTK_IS_CSS_IMAGE (image), NULL); + g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), NULL); + + klass = GTK_CSS_IMAGE_GET_CLASS (image); + + return klass->compute (image, context); +} + +void +_gtk_css_image_draw (GtkCssImage *image, + cairo_t *cr, + double width, + double height) +{ + GtkCssImageClass *klass; + + g_return_if_fail (GTK_IS_CSS_IMAGE (image)); + g_return_if_fail (cr != NULL); + + cairo_save (cr); + + klass = GTK_CSS_IMAGE_GET_CLASS (image); + + klass->draw (image, cr, width, height); + + cairo_restore (cr); +} + +void +_gtk_css_image_print (GtkCssImage *image, + GString *string) +{ + GtkCssImageClass *klass; + + g_return_if_fail (GTK_IS_CSS_IMAGE (image)); + g_return_if_fail (string != NULL); + + klass = GTK_CSS_IMAGE_GET_CLASS (image); + + klass->print (image, string); +} + +GtkCssImage * +_gtk_css_image_new_parse (GtkCssParser *parser, + GFile *base) +{ + GtkCssImage *image; + GtkCssImageClass *klass; + + g_return_val_if_fail (parser != NULL, NULL); + g_return_val_if_fail (G_IS_FILE (base), NULL); + + image = g_object_new (GTK_TYPE_CSS_IMAGE, NULL); + + klass = GTK_CSS_IMAGE_GET_CLASS (image); + if (!klass->parse (image, parser, base)) + { + g_object_unref (image); + return NULL; + } + + return image; +} + diff --git a/gtk/gtkcssimageprivate.h b/gtk/gtkcssimageprivate.h new file mode 100644 index 0000000000..20a09a4073 --- /dev/null +++ b/gtk/gtkcssimageprivate.h @@ -0,0 +1,98 @@ +/* + * 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 + */ + +#ifndef __GTK_CSS_IMAGE_PRIVATE_H__ +#define __GTK_CSS_IMAGE_PRIVATE_H__ + +#include +#include + +#include "gtk/gtkstylecontext.h" +#include "gtk/gtkcssparserprivate.h" + +G_BEGIN_DECLS + +#define GTK_TYPE_CSS_IMAGE (_gtk_css_image_get_type ()) +#define GTK_CSS_IMAGE(obj) (G_TYPE_CHECK_INSTANCE_CAST (obj, GTK_TYPE_CSS_IMAGE, GtkCssImage)) +#define GTK_CSS_IMAGE_CLASS(cls) (G_TYPE_CHECK_CLASS_CAST (cls, GTK_TYPE_CSS_IMAGE, GtkCssImageClass)) +#define GTK_IS_CSS_IMAGE(obj) (G_TYPE_CHECK_INSTANCE_TYPE (obj, GTK_TYPE_CSS_IMAGE)) +#define GTK_IS_CSS_IMAGE_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE (obj, GTK_TYPE_CSS_IMAGE)) +#define GTK_CSS_IMAGE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CSS_IMAGE, GtkCssImageClass)) + +typedef struct _GtkCssImage GtkCssImage; +typedef struct _GtkCssImageClass GtkCssImageClass; + +struct _GtkCssImage +{ + GObject parent; +}; + +struct _GtkCssImageClass +{ + GObjectClass parent_class; + + /* width of image or 0 if it has no width (optional) */ + int (* get_width) (GtkCssImage *image); + /* height of image or 0 if it has no height (optional) */ + int (* get_height) (GtkCssImage *image); + /* aspect ratio (width / height) of image or 0 if it has no aspect ratio (optional) */ + double (* get_aspect_ratio) (GtkCssImage *image); + + /* create "computed value" in CSS terms, returns a new reference */ + GtkCssImage *(* compute) (GtkCssImage *image, + GtkStyleContext *context); + + /* draw to 0,0 with the given width and height */ + void (* draw) (GtkCssImage *image, + cairo_t *cr, + double width, + double height); + /* parse CSS, return TRUE on success */ + gboolean (* parse) (GtkCssImage *image, + GtkCssParser *parser, + GFile *base); + /* print to CSS */ + void (* print) (GtkCssImage *image, + GString *string); +}; + +GType _gtk_css_image_get_type (void) G_GNUC_CONST; + +GtkCssImage * _gtk_css_image_new_parse (GtkCssParser *parser, + GFile *base); + +int _gtk_css_image_get_width (GtkCssImage *image); +int _gtk_css_image_get_height (GtkCssImage *image); +double _gtk_css_image_get_aspect_ratio (GtkCssImage *image); + +GtkCssImage * _gtk_css_image_compute (GtkCssImage *image, + GtkStyleContext *context); + +void _gtk_css_image_draw (GtkCssImage *image, + cairo_t *cr, + double width, + double height); +void _gtk_css_image_print (GtkCssImage *image, + GString *string); + + +G_END_DECLS + +#endif /* __GTK_CSS_IMAGE_PRIVATE_H__ */