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author | Matthew Barnes <mbarnes@redhat.com> | 2010-10-30 00:54:16 +0800 |
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committer | Matthew Barnes <mbarnes@redhat.com> | 2010-10-30 01:51:39 +0800 |
commit | a6a004b8f52688ca6e01c0f1340d42cfaf9239e1 (patch) | |
tree | c51a0b629dfc43c70a8f524e82610837f00635e8 /libgnomecanvas/gnome-canvas-shape.c | |
parent | a68d0f50da7a9d5cd9f33b8a95aa23b58e7edea8 (diff) | |
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Merge GnomeCanvasShape into GnomeCanvasRect.
GnomeCanvasRect is the only subclass of GnomeCanvasShape,
and passing Cairo paths around doesn't seem to work well.
Diffstat (limited to 'libgnomecanvas/gnome-canvas-shape.c')
-rw-r--r-- | libgnomecanvas/gnome-canvas-shape.c | 582 |
1 files changed, 0 insertions, 582 deletions
diff --git a/libgnomecanvas/gnome-canvas-shape.c b/libgnomecanvas/gnome-canvas-shape.c deleted file mode 100644 index 8d5072facd..0000000000 --- a/libgnomecanvas/gnome-canvas-shape.c +++ /dev/null @@ -1,582 +0,0 @@ -/* Generic bezier shape item for GnomeCanvasWidget. Most code taken - * from gnome-canvas-bpath but made into a shape item. - * - * GnomeCanvas is basically a port of the Tk toolkit's most excellent - * canvas widget. Tk is copyrighted by the Regents of the University - * of California, Sun Microsystems, and other parties. - * - * Copyright (C) 1998,1999 The Free Software Foundation - * - * Authors: Federico Mena <federico@nuclecu.unam.mx> - * Raph Levien <raph@acm.org> - * Lauris Kaplinski <lauris@ximian.com> - * Miguel de Icaza <miguel@kernel.org> - * Cody Russell <bratsche@gnome.org> - * Rusty Conover <rconover@bangtail.net> - */ - -/* These includes are set up for standalone compile. If/when this codebase - is integrated into libgnomeui, the includes will need to change. */ - -#include <math.h> -#include <string.h> - -#include <gtk/gtk.h> -#include <cairo-gobject.h> -#include "gnome-canvas.h" -#include "gnome-canvas-util.h" - -#include "gnome-canvas-shape.h" -#include "gnome-canvas-shape-private.h" - -enum { - PROP_0, - PROP_FILL_COLOR, - PROP_FILL_COLOR_GDK, - PROP_FILL_COLOR_RGBA, - PROP_OUTLINE_COLOR, - PROP_OUTLINE_COLOR_GDK, - PROP_OUTLINE_COLOR_RGBA, - PROP_LINE_WIDTH, - PROP_CAP_STYLE, - PROP_JOIN_STYLE, - PROP_WIND, - PROP_MITERLIMIT, - PROP_DASH -}; - -static void gnome_canvas_shape_dispose (GnomeCanvasItem *object); -static void gnome_canvas_shape_set_property (GObject *object, - guint param_id, - const GValue *value, - GParamSpec *pspec); -static void gnome_canvas_shape_get_property (GObject *object, - guint param_id, - GValue *value, - GParamSpec *pspec); - -static void gnome_canvas_shape_update (GnomeCanvasItem *item, const cairo_matrix_t *i2c, gint flags); -static void gnome_canvas_shape_draw (GnomeCanvasItem *item, GdkDrawable *drawable, - gint x, gint y, gint width, gint height); -static GnomeCanvasItem *gnome_canvas_shape_point (GnomeCanvasItem *item, gdouble x, gdouble y, - gint cx, gint cy); -static void gnome_canvas_shape_bounds (GnomeCanvasItem *item, - gdouble *x1, gdouble *y1, gdouble *x2, gdouble *y2); - -G_DEFINE_TYPE (GnomeCanvasShape, gnome_canvas_shape, GNOME_TYPE_CANVAS_ITEM) - -static void -gnome_canvas_shape_class_init (GnomeCanvasShapeClass *class) -{ - GObjectClass *gobject_class; - GnomeCanvasItemClass *item_class; - - gobject_class = (GObjectClass *) class; - item_class = (GnomeCanvasItemClass *) class; - - gobject_class->set_property = gnome_canvas_shape_set_property; - gobject_class->get_property = gnome_canvas_shape_get_property; - - g_object_class_install_property (gobject_class, - PROP_FILL_COLOR, - g_param_spec_string ("fill_color", NULL, NULL, - NULL, - (G_PARAM_WRITABLE))); - g_object_class_install_property (gobject_class, - PROP_FILL_COLOR_GDK, - g_param_spec_boxed ("fill_color_gdk", NULL, NULL, - GDK_TYPE_COLOR, - G_PARAM_WRITABLE)); - g_object_class_install_property (gobject_class, - PROP_FILL_COLOR_RGBA, - g_param_spec_uint ("fill_rgba", NULL, NULL, - 0, G_MAXUINT, 0, - (G_PARAM_READABLE | G_PARAM_WRITABLE))); - g_object_class_install_property (gobject_class, - PROP_OUTLINE_COLOR, - g_param_spec_string ("outline_color", NULL, NULL, - NULL, - (G_PARAM_WRITABLE))); - g_object_class_install_property (gobject_class, - PROP_OUTLINE_COLOR_GDK, - g_param_spec_boxed ("outline_color_gdk", NULL, NULL, - GDK_TYPE_COLOR, - G_PARAM_WRITABLE)); - g_object_class_install_property (gobject_class, - PROP_OUTLINE_COLOR_RGBA, - g_param_spec_uint ("outline_rgba", NULL, NULL, - 0, G_MAXUINT, 0, - (G_PARAM_READABLE | G_PARAM_WRITABLE))); - g_object_class_install_property (gobject_class, - PROP_LINE_WIDTH, - g_param_spec_double ("line_width", NULL, NULL, - 0.0, G_MAXDOUBLE, 1.0, - (G_PARAM_READABLE | G_PARAM_WRITABLE))); - g_object_class_install_property (gobject_class, - PROP_CAP_STYLE, - g_param_spec_enum ("cap_style", NULL, NULL, - CAIRO_GOBJECT_TYPE_LINE_CAP, - CAIRO_LINE_CAP_BUTT, - (G_PARAM_READABLE | G_PARAM_WRITABLE))); - g_object_class_install_property (gobject_class, - PROP_JOIN_STYLE, - g_param_spec_enum ("join_style", NULL, NULL, - CAIRO_GOBJECT_TYPE_LINE_JOIN, - CAIRO_LINE_JOIN_MITER, - (G_PARAM_READABLE | G_PARAM_WRITABLE))); - g_object_class_install_property (gobject_class, - PROP_WIND, - g_param_spec_enum ("wind", NULL, NULL, - CAIRO_GOBJECT_TYPE_FILL_RULE, - CAIRO_FILL_RULE_EVEN_ODD, - (G_PARAM_READABLE | G_PARAM_WRITABLE))); - g_object_class_install_property (gobject_class, - PROP_MITERLIMIT, - g_param_spec_double ("miterlimit", NULL, NULL, - 0.0, G_MAXDOUBLE, 10.43, - (G_PARAM_READABLE | G_PARAM_WRITABLE))); -#if 0 - /* XXX: Find a good way to pass dash properties in a property */ - g_object_class_install_property (gobject_class, - PROP_DASH, - g_param_spec_pointer ("dash", NULL, NULL, - (G_PARAM_READABLE | G_PARAM_WRITABLE))); -#endif - - item_class->dispose = gnome_canvas_shape_dispose; - item_class->update = gnome_canvas_shape_update; - item_class->draw = gnome_canvas_shape_draw; - item_class->point = gnome_canvas_shape_point; - item_class->bounds = gnome_canvas_shape_bounds; - - g_type_class_add_private (class, sizeof (GnomeCanvasShapePriv)); -} - -static void -gnome_canvas_shape_init (GnomeCanvasShape *shape) -{ - shape->priv = G_TYPE_INSTANCE_GET_PRIVATE (shape, - GNOME_TYPE_CANVAS_SHAPE, - GnomeCanvasShapePriv); - - shape->priv->path = NULL; - - shape->priv->scale = 1.0; - - shape->priv->fill_set = FALSE; - shape->priv->outline_set = FALSE; - - shape->priv->line_width = 1.0; - - shape->priv->fill_rgba = 0x0000003f; - shape->priv->outline_rgba = 0x0000007f; - - shape->priv->cap = CAIRO_LINE_CAP_BUTT; - shape->priv->join = CAIRO_LINE_JOIN_MITER; - shape->priv->wind = CAIRO_FILL_RULE_EVEN_ODD; - shape->priv->miterlimit = 10.43; /* X11 default */ - - shape->priv->n_dash = 0; - shape->priv->dash = NULL; -} - -static void -gnome_canvas_shape_dispose (GnomeCanvasItem *object) -{ - GnomeCanvasShape *shape; - - g_return_if_fail (GNOME_IS_CANVAS_SHAPE (object)); - - shape = GNOME_CANVAS_SHAPE (object); - - if (shape->priv->path != NULL) { - cairo_path_destroy (shape->priv->path); - shape->priv->path = NULL; - } - - g_free (shape->priv->dash); - shape->priv->dash = NULL; - - if (GNOME_CANVAS_ITEM_CLASS (gnome_canvas_shape_parent_class)->dispose) - GNOME_CANVAS_ITEM_CLASS (gnome_canvas_shape_parent_class)->dispose (object); -} - -/** - * gnome_canvas_shape_set_path: - * @shape: a GnomeCanvasShape - * @path: a cairo path from a cairo_copy_path() call - * - * This function sets the the path used by the GnomeCanvasShape. - * Notice that it does not request updates, as it is meant to be used - * from item implementations, from inside update queue. - */ -void -gnome_canvas_shape_set_path (GnomeCanvasShape *shape, cairo_path_t *path) -{ - GnomeCanvasShapePriv *priv; - - g_return_if_fail (shape != NULL); - g_return_if_fail (GNOME_IS_CANVAS_SHAPE (shape)); - - priv = shape->priv; - - if (priv->path) { - cairo_path_destroy (priv->path); - priv->path = NULL; - } - - priv->path = path; -} - -static guint32 -get_rgba_from_color (GdkColor * color) -{ - return ((color->red & 0xff00) << 16) | ((color->green & 0xff00) << 8) | (color->blue & 0xff00) | 0xff; -} - -static void -gnome_canvas_shape_set_property (GObject *object, - guint param_id, - const GValue *value, - GParamSpec *pspec) -{ - GnomeCanvasItem *item; - GnomeCanvasShape *shape; - GnomeCanvasShapePriv *priv; - GdkColor color; - GdkColor *colorptr; - const gchar *color_string; - - item = GNOME_CANVAS_ITEM (object); - shape = GNOME_CANVAS_SHAPE (object); - priv = shape->priv; - - switch (param_id) { - case PROP_FILL_COLOR: - color_string = g_value_get_string (value); - if (color_string != NULL) { - if (gdk_color_parse (color_string, &color)) { - g_warning ( - "Failed to parse color '%s'", - color_string); - break; - } - priv->fill_set = TRUE; - priv->fill_rgba = get_rgba_from_color (&color); - } else if (priv->fill_set) - priv->fill_set = FALSE; - else - break; - - gnome_canvas_item_request_update (item); - break; - - case PROP_FILL_COLOR_GDK: - colorptr = g_value_get_boxed (value); - if (colorptr != NULL) { - priv->fill_set = TRUE; - priv->fill_rgba = get_rgba_from_color (colorptr); - } else if (priv->fill_set) - priv->fill_set = FALSE; - else - break; - - gnome_canvas_item_request_update (item); - break; - - case PROP_FILL_COLOR_RGBA: - priv->fill_set = TRUE; - priv->fill_rgba = g_value_get_uint (value); - - gnome_canvas_item_request_update (item); - break; - - case PROP_OUTLINE_COLOR: - color_string = g_value_get_string (value); - if (color_string != NULL) { - if (!gdk_color_parse (color_string, &color)) { - g_warning ( - "Failed to parse color '%s'", - color_string); - break; - } - priv->outline_set = TRUE; - priv->outline_rgba = get_rgba_from_color (&color); - } else if (priv->outline_set) - priv->outline_set = FALSE; - else - break; - - gnome_canvas_item_request_update (item); - break; - - case PROP_OUTLINE_COLOR_GDK: - colorptr = g_value_get_boxed (value); - if (colorptr != NULL) { - priv->outline_set = TRUE; - priv->outline_rgba = get_rgba_from_color (colorptr); - } else if (priv->outline_set) - priv->outline_set = FALSE; - else - break; - - gnome_canvas_item_request_update (item); - break; - - case PROP_OUTLINE_COLOR_RGBA: - priv->outline_set = TRUE; - priv->outline_rgba = g_value_get_uint (value); - - gnome_canvas_item_request_update (item); - break; - - case PROP_LINE_WIDTH: - priv->line_width = g_value_get_double (value); - - gnome_canvas_item_request_update (item); - break; - - case PROP_WIND: - priv->wind = g_value_get_enum (value); - gnome_canvas_item_request_update (item); - break; - - case PROP_CAP_STYLE: - priv->cap = g_value_get_enum (value); - gnome_canvas_item_request_update (item); - break; - - case PROP_JOIN_STYLE: - priv->join = g_value_get_enum (value); - gnome_canvas_item_request_update (item); - break; - - case PROP_MITERLIMIT: - priv->miterlimit = g_value_get_double (value); - gnome_canvas_item_request_update (item); - break; - - case PROP_DASH: - /* XXX */ - g_assert_not_reached (); - break; - - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec); - break; - } -} - -/** - * gnome_canvas_shape_get_path: - * @shape: a GnomeCanvasShape - * - * This function returns the #cairo_path_t that the shape currently - * uses. If there is not a #GnomeCanvasPathDef set for the shape - * it returns NULL. - * - * Returns: a #cairo_path_t or NULL if none is set for the shape. - */ -const cairo_path_t * -gnome_canvas_shape_get_path (GnomeCanvasShape *shape) -{ - g_return_val_if_fail (shape != NULL, NULL); - g_return_val_if_fail (GNOME_IS_CANVAS_SHAPE (shape), NULL); - - return shape->priv->path; -} - -static void -gnome_canvas_shape_get_property (GObject *object, - guint param_id, - GValue *value, - GParamSpec *pspec) -{ - GnomeCanvasShape *shape = GNOME_CANVAS_SHAPE (object); - GnomeCanvasShapePriv *priv = shape->priv; - - switch (param_id) { - - case PROP_FILL_COLOR_RGBA: - g_value_set_uint (value, priv->fill_rgba); - break; - - case PROP_OUTLINE_COLOR_RGBA: - g_value_set_uint (value, priv->outline_rgba); - break; - - case PROP_WIND: - g_value_set_uint (value, priv->wind); - break; - - case PROP_CAP_STYLE: - g_value_set_enum (value, priv->cap); - break; - - case PROP_JOIN_STYLE: - g_value_set_enum (value, priv->join); - break; - - case PROP_LINE_WIDTH: - g_value_set_double (value, priv->line_width); - break; - - case PROP_MITERLIMIT: - g_value_set_double (value, priv->miterlimit); - break; - - case PROP_DASH: - /* XXX */ - g_assert_not_reached (); - break; - - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec); - break; - } -} - -static gboolean -gnome_canvas_shape_setup_for_fill (GnomeCanvasShape *shape, cairo_t *cr) -{ - GnomeCanvasShapePriv *priv = shape->priv; - - if (!priv->fill_set) - return FALSE; - - cairo_set_source_rgba (cr, - ((priv->fill_rgba >> 24) & 0xff) / 255.0, - ((priv->fill_rgba >> 16) & 0xff) / 255.0, - ((priv->fill_rgba >> 8) & 0xff) / 255.0, - ( priv->fill_rgba & 0xff) / 255.0); - cairo_set_fill_rule (cr, priv->wind); - - return TRUE; -} - -static gboolean -gnome_canvas_shape_setup_for_stroke (GnomeCanvasShape *shape, cairo_t *cr) -{ - GnomeCanvasShapePriv *priv = shape->priv; - - if (!priv->outline_set) - return FALSE; - - cairo_set_source_rgba (cr, - ((priv->outline_rgba >> 24) & 0xff) / 255.0, - ((priv->outline_rgba >> 16) & 0xff) / 255.0, - ((priv->outline_rgba >> 8) & 0xff) / 255.0, - ( priv->outline_rgba & 0xff) / 255.0); - cairo_set_line_width (cr, priv->line_width); - cairo_set_line_cap (cr, priv->cap); - cairo_set_line_join (cr, priv->join); - cairo_set_miter_limit (cr, priv->miterlimit); - cairo_set_dash (cr, priv->dash, priv->n_dash, priv->dash_offset); - - return TRUE; -} - -static void -gnome_canvas_shape_draw (GnomeCanvasItem *item, - GdkDrawable *drawable, - gint x, - gint y, - gint width, - gint height) -{ - GnomeCanvasShape * shape; - cairo_matrix_t matrix; - cairo_t *cr; - - shape = GNOME_CANVAS_SHAPE (item); - cr = gdk_cairo_create (drawable); - gnome_canvas_item_i2c_matrix (item, &matrix); - cairo_transform (cr, &matrix); - cairo_append_path (cr, shape->priv->path); - - if (gnome_canvas_shape_setup_for_fill (shape, cr)) - cairo_fill_preserve (cr); - - if (gnome_canvas_shape_setup_for_stroke (shape, cr)) - cairo_stroke_preserve (cr); - - cairo_destroy (cr); -} - -static void -gnome_canvas_shape_bounds (GnomeCanvasItem *item, gdouble *x1, gdouble *y1, gdouble *x2, gdouble *y2) -{ - GnomeCanvasShape * shape; - GnomeCanvasShapePriv * priv; - cairo_t *cr; - - shape = GNOME_CANVAS_SHAPE (item); - priv = shape->priv; - - cr = gnome_canvas_cairo_create_scratch (); - cairo_append_path (cr, shape->priv->path); - - if (gnome_canvas_shape_setup_for_stroke (shape, cr)) - cairo_stroke_extents (cr, x1, y1, x2, y2); - else if (gnome_canvas_shape_setup_for_fill (shape, cr)) - cairo_fill_extents (cr, x1, y1, x2, y2); - else { - *x1 = *x2 = *y1 = *y2 = 0; - } - - cairo_destroy (cr); -} - -static void -gnome_canvas_shape_update (GnomeCanvasItem *item, const cairo_matrix_t *i2c, gint flags) -{ - GnomeCanvasShape * shape; - GnomeCanvasShapePriv * priv; - double x1, x2, y1, y2; - cairo_matrix_t matrix; - - shape = GNOME_CANVAS_SHAPE (item); - - priv = shape->priv; - - /* Common part */ - if (GNOME_CANVAS_ITEM_CLASS (gnome_canvas_shape_parent_class)->update) - GNOME_CANVAS_ITEM_CLASS (gnome_canvas_shape_parent_class)->update (item, i2c, flags); - - gnome_canvas_shape_bounds (item, &x1, &y1, &x2, &y2); - gnome_canvas_item_i2w_matrix (item, &matrix); - - gnome_canvas_matrix_transform_rect (&matrix, &x1, &y1, &x2, &y2); - gnome_canvas_update_bbox (GNOME_CANVAS_ITEM (shape), - floor (x1), floor (y1), - ceil (x2), ceil (y2)); -} - -static GnomeCanvasItem * -gnome_canvas_shape_point (GnomeCanvasItem *item, gdouble x, gdouble y, - gint cx, gint cy) -{ - GnomeCanvasShape * shape; - cairo_t *cr; - - shape = GNOME_CANVAS_SHAPE (item); - - cr = gnome_canvas_cairo_create_scratch (); - cairo_append_path (cr, shape->priv->path); - - if (gnome_canvas_shape_setup_for_fill (shape, cr) && - cairo_in_fill (cr, x, y)) { - cairo_destroy (cr); - return item; - } - - if (gnome_canvas_shape_setup_for_stroke (shape, cr) && - cairo_in_stroke (cr, x, y)) { - cairo_destroy (cr); - return item; - } - - cairo_destroy (cr); - - return NULL; -} |