730 lines
19 KiB
C
730 lines
19 KiB
C
#include <stdio.h>
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#include <math.h>
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#include <libgnomecanvas/libgnomecanvas.h>
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#include "canvas-simplerect.h"
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#include "rgb_macros.h"
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#include "gettext.h"
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#define _(Text) dgettext (PACKAGE,Text)
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enum {
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PROP_0,
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PROP_X1,
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PROP_Y1,
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PROP_X2,
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PROP_Y2,
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PROP_OUTLINE_PIXELS,
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PROP_OUTLINE_WHAT,
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PROP_FILL,
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PROP_FILL_COLOR_RGBA,
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PROP_OUTLINE_COLOR_RGBA,
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PROP_DRAW
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};
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static void gnome_canvas_simplerect_class_init (GnomeCanvasSimpleRectClass *class);
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static void gnome_canvas_simplerect_init (GnomeCanvasSimpleRect *simplerect);
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static void gnome_canvas_simplerect_destroy (GtkObject *object);
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static void gnome_canvas_simplerect_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gnome_canvas_simplerect_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static void gnome_canvas_simplerect_update (GnomeCanvasItem *item,
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double *affine,
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ArtSVP *clip_path,
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int flags);
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static void gnome_canvas_simplerect_bounds (GnomeCanvasItem *item,
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double *x1,
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double *y1,
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double *x2,
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double *y2);
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static double gnome_canvas_simplerect_point (GnomeCanvasItem *item, double x, double y, int cx, int cy, GnomeCanvasItem **actual_item);
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static void gnome_canvas_simplerect_render (GnomeCanvasItem *item, GnomeCanvasBuf *buf);
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static void gnome_canvas_simplerect_draw (GnomeCanvasItem *item, GdkDrawable *drawable, int x, int y, int w, int h);
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static GnomeCanvasItemClass *parent_class;
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GType
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gnome_canvas_simplerect_get_type (void)
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{
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static GType simplerect_type;
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if (!simplerect_type) {
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static const GTypeInfo object_info = {
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sizeof (GnomeCanvasSimpleRectClass),
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(GBaseInitFunc) NULL,
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(GBaseFinalizeFunc) NULL,
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(GClassInitFunc) gnome_canvas_simplerect_class_init,
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(GClassFinalizeFunc) NULL,
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NULL, /* class_data */
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sizeof (GnomeCanvasSimpleRect),
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0, /* n_preallocs */
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(GInstanceInitFunc) gnome_canvas_simplerect_init,
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NULL /* value_table */
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};
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simplerect_type = g_type_register_static (GNOME_TYPE_CANVAS_ITEM, "GnomeCanvasSimpleRect",
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&object_info, 0);
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}
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return simplerect_type;
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}
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static void
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gnome_canvas_simplerect_class_init (GnomeCanvasSimpleRectClass *class)
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{
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GObjectClass *gobject_class;
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GtkObjectClass *object_class;
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GnomeCanvasItemClass *item_class;
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gobject_class = (GObjectClass *) class;
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object_class = (GtkObjectClass *) class;
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item_class = (GnomeCanvasItemClass *) class;
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gobject_class->set_property = gnome_canvas_simplerect_set_property;
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gobject_class->get_property = gnome_canvas_simplerect_get_property;
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g_object_class_install_property (gobject_class,
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PROP_X1,
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g_param_spec_double ("x1",
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_("x1"),
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_("x coordinate of upper left corner of rect"),
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-G_MAXDOUBLE,
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G_MAXDOUBLE,
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0.0,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_Y1,
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g_param_spec_double ("y1",
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_("y1"),
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_("y coordinate of upper left corner of rect "),
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-G_MAXDOUBLE,
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G_MAXDOUBLE,
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0.0,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_X2,
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g_param_spec_double ("x2",
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_("x2"),
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_("x coordinate of lower right corner of rect"),
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-G_MAXDOUBLE,
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G_MAXDOUBLE,
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0.0,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_Y2,
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g_param_spec_double ("y2",
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_("y2"),
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_("y coordinate of lower right corner of rect "),
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-G_MAXDOUBLE,
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G_MAXDOUBLE,
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0.0,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_OUTLINE_PIXELS,
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g_param_spec_uint ("outline_pixels",
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_("outline pixels"),
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_("width in pixels of outline"),
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0,
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G_MAXUINT,
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0,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_OUTLINE_WHAT,
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g_param_spec_uint ("outline_what",
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_("outline what"),
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_("which boundaries to outline (mask)"),
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0,
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G_MAXUINT,
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0,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_FILL,
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g_param_spec_boolean ("fill",
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_("fill"),
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_("fill rectangle"),
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TRUE,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_DRAW,
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g_param_spec_boolean ("draw",
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_("draw"),
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_("draw rectangle"),
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TRUE,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_OUTLINE_COLOR_RGBA,
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g_param_spec_uint ("outline_color_rgba",
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_("outline color rgba"),
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_("color of outline"),
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0,
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G_MAXUINT,
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0,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_FILL_COLOR_RGBA,
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g_param_spec_uint ("fill_color_rgba",
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_("fill color rgba"),
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_("color of fill"),
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0,
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G_MAXUINT,
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0,
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G_PARAM_READWRITE));
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object_class->destroy = gnome_canvas_simplerect_destroy;
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item_class->update = gnome_canvas_simplerect_update;
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item_class->draw = gnome_canvas_simplerect_draw;
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item_class->bounds = gnome_canvas_simplerect_bounds;
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item_class->point = gnome_canvas_simplerect_point;
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item_class->render = gnome_canvas_simplerect_render;
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}
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static void
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gnome_canvas_simplerect_init (GnomeCanvasSimpleRect *simplerect)
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{
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simplerect->x1 = 0.0;
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simplerect->y1 = 0.0;
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simplerect->x2 = 0.0;
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simplerect->y2 = 0.0;
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simplerect->fill = TRUE;
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simplerect->draw = TRUE;
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simplerect->full_draw_on_update = TRUE;
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simplerect->fill_color = 0;
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simplerect->outline_color = 0;
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simplerect->outline_pixels = 1;
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simplerect->outline_what = 0xf;
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// GTK2FIX
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// GNOME_CANVAS_ITEM(simplerect)->object.flags |= GNOME_CANVAS_ITEM_NO_AUTO_REDRAW;
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}
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static void
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gnome_canvas_simplerect_destroy (GtkObject *object)
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{
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GnomeCanvasSimpleRect *rect;
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g_return_if_fail (object != NULL);
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g_return_if_fail (GNOME_IS_CANVAS_SIMPLERECT (object));
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rect = GNOME_CANVAS_SIMPLERECT (object);
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/* remember, destroy can be run multiple times! */
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if (GTK_OBJECT_CLASS (parent_class)->destroy)
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(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
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}
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static void
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gnome_canvas_simplerect_bounds (GnomeCanvasItem *item, double *x1, double *y1, double *x2, double *y2)
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{
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GnomeCanvasSimpleRect *simplerect = GNOME_CANVAS_SIMPLERECT (item);
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*x1 = simplerect->x1;
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*y1 = simplerect->y1;
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*x2 = simplerect->x2 + 1;
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*y2 = simplerect->y2 + 1;
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}
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static void
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gnome_canvas_simplerect_reset_bounds (GnomeCanvasItem *item)
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{
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GnomeCanvasSimpleRect* simplerect;
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double x1, x2, y1, y2;
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double old_x1, old_x2, old_y1, old_y2;
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double a, b;
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old_x1 = item->x1;
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old_y1 = item->y1;
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old_x2 = item->x2;
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old_y2 = item->y2;
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gnome_canvas_simplerect_bounds (item, &x1, &y1, &x2, &y2);
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gnome_canvas_item_i2w (item, &x1, &y1);
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gnome_canvas_item_i2w (item, &x2, &y2);
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item->x1 = x1;
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item->y1 = y1;
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item->x2 = x2;
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item->y2 = y2;
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/* now compute bounding box in canvas units */
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simplerect = GNOME_CANVAS_SIMPLERECT (item);
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gnome_canvas_w2c (GNOME_CANVAS(item->canvas), x1, y1, &simplerect->bbox_ulx, &simplerect->bbox_uly);
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gnome_canvas_w2c (GNOME_CANVAS(item->canvas), x2, y2, &simplerect->bbox_lrx, &simplerect->bbox_lry);
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/* now queue redraws for changed areas */
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if (item->x1 != old_x1) {
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/* left edge changed. redraw the area that altered */
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a = MIN(item->x1, old_x1);
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b = MAX(item->x1, old_x1);
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gnome_canvas_request_redraw (item->canvas, a - 1, item->y1, b + 1, item->y2);
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}
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if (item->x2 != old_x2) {
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/* right edge changed. redraw the area that altered */
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a = MIN(item->x2, old_x2);
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b = MAX(item->x2, old_x2);
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gnome_canvas_request_redraw (item->canvas, a - 1, item->y1, b + 1, item->y2);
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}
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if (item->y1 != old_y1) {
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/* top edge changed. redraw the area that altered */
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a = MIN(item->y1, old_y1);
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b = MAX(item->y1, old_y1);
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gnome_canvas_request_redraw (item->canvas, item->x1, a - 1, item->x2, b + 1);
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}
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if (item->y2 != old_y2) {
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/* lower edge changed. redraw the area that altered */
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a = MIN(item->y2, old_y2);
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b = MAX(item->y2, old_y2);
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gnome_canvas_request_redraw (item->canvas, item->x1, a - 1, item->x2, b + 1);
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}
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}
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/*
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* CANVAS CALLBACKS
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*/
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static void
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gnome_canvas_simplerect_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GnomeCanvasSimpleRect *simplerect;
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int update = FALSE;
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int bounds_changed = FALSE;
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g_return_if_fail (object != NULL);
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g_return_if_fail (GNOME_IS_CANVAS_SIMPLERECT (object));
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simplerect = GNOME_CANVAS_SIMPLERECT (object);
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switch (prop_id) {
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case PROP_X1:
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if (simplerect->x1 != g_value_get_double (value)) {
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simplerect->x1 = g_value_get_double (value);
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bounds_changed = TRUE;
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}
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break;
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case PROP_Y1:
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if (simplerect->y1 != g_value_get_double (value)) {
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simplerect->y1 = g_value_get_double (value);
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bounds_changed = TRUE;
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}
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break;
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case PROP_X2:
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if (simplerect->x2 != g_value_get_double (value)) {
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simplerect->x2 = g_value_get_double (value);
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bounds_changed = TRUE;
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}
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break;
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case PROP_Y2:
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if (simplerect->y2 != g_value_get_double (value)) {
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simplerect->y2 = g_value_get_double (value);
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bounds_changed = TRUE;
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}
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break;
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case PROP_DRAW:
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if (simplerect->draw != g_value_get_boolean (value)) {
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simplerect->draw = g_value_get_boolean (value);
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update = TRUE;
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}
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break;
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case PROP_FILL:
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if (simplerect->fill != g_value_get_boolean (value)) {
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simplerect->fill = g_value_get_boolean (value);
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update = TRUE;
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}
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break;
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case PROP_FILL_COLOR_RGBA:
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if (simplerect->fill_color != g_value_get_uint(value)) {
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simplerect->fill_color = g_value_get_uint(value);
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update = TRUE;
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}
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break;
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case PROP_OUTLINE_COLOR_RGBA:
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if (simplerect->outline_color != g_value_get_uint(value)) {
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simplerect->outline_color = g_value_get_uint(value);
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update = TRUE;
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}
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break;
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case PROP_OUTLINE_PIXELS:
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if (simplerect->outline_pixels != g_value_get_uint(value)) {
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simplerect->outline_pixels = g_value_get_uint(value);
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update = TRUE;
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}
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break;
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case PROP_OUTLINE_WHAT:
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if (simplerect->outline_what != g_value_get_uint(value)) {
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simplerect->outline_what = g_value_get_uint(value);
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update = TRUE;
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}
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break;
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default:
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break;
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}
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simplerect->full_draw_on_update = update;
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if (update || bounds_changed) {
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gnome_canvas_item_request_update (GNOME_CANVAS_ITEM(object));
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}
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}
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static void
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gnome_canvas_simplerect_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GnomeCanvasSimpleRect *rect = GNOME_CANVAS_SIMPLERECT (object);
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g_return_if_fail (object != NULL);
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g_return_if_fail (GNOME_IS_CANVAS_SIMPLERECT (object));
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switch (prop_id) {
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case PROP_X1:
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g_value_set_double (value, rect->x1);
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break;
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case PROP_X2:
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g_value_set_double (value, rect->x2);
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break;
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case PROP_Y1:
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g_value_set_double (value, rect->y1);
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break;
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case PROP_Y2:
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g_value_set_double (value, rect->y2);
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break;
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case PROP_OUTLINE_WHAT:
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g_value_set_uint (value, rect->outline_what);
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break;
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case PROP_FILL:
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g_value_set_boolean (value, rect->fill);
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break;
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case PROP_OUTLINE_PIXELS:
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g_value_set_uint (value, rect->outline_pixels);
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break;
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case PROP_FILL_COLOR_RGBA:
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g_value_set_uint (value, rect->fill_color);
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break;
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case PROP_OUTLINE_COLOR_RGBA:
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g_value_set_uint (value, rect->outline_color);
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break;
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case PROP_DRAW:
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g_value_set_boolean (value, rect->draw);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gnome_canvas_simplerect_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags)
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{
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GnomeCanvasSimpleRect *simplerect;
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unsigned char foo;
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simplerect = GNOME_CANVAS_SIMPLERECT (item);
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if (parent_class->update)
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(* parent_class->update) (item, affine, clip_path, flags);
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gnome_canvas_simplerect_reset_bounds (item);
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if (simplerect->full_draw_on_update) {
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gnome_canvas_request_redraw (item->canvas,
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simplerect->bbox_ulx,
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simplerect->bbox_uly,
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simplerect->bbox_lrx+1,
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simplerect->bbox_lry+1);
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simplerect->full_draw_on_update = FALSE;
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}
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UINT_TO_RGBA (simplerect->fill_color, &simplerect->fill_r, &simplerect->fill_g, &simplerect->fill_b, &simplerect->fill_a);
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UINT_TO_RGBA (simplerect->outline_color, &simplerect->outline_r, &simplerect->outline_g, &simplerect->outline_b, &foo);
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}
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#define SIMPLERECT_FAST_RENDERER
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#ifdef SIMPLERECT_FAST_RENDERER
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static void
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gnome_canvas_simplerect_render (GnomeCanvasItem *item,
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GnomeCanvasBuf *buf)
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{
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GnomeCanvasSimpleRect *simplerect;
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int end, begin;
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int ey, sy;
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unsigned int i;
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ArtIRect intersection;
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ArtIRect self;
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simplerect = GNOME_CANVAS_SIMPLERECT (item);
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if (parent_class->render) {
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(*parent_class->render) (item, buf);
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}
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if (buf->is_bg) {
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// this can be useful for debugging/understanding how the canvas redraws
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// stuff.
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// gint randr, randg, randb;
|
|
// randr = random() % 255;
|
|
// randg = random() % 255;
|
|
// randb = random() % 255;
|
|
// PAINT_BOX(buf, randr, randg, randb, 255, buf->rect.x0, buf->rect.y0, buf->rect.x1, buf->rect.y1);
|
|
|
|
gnome_canvas_buf_ensure_buf (buf);
|
|
buf->is_bg = FALSE;
|
|
}
|
|
|
|
if (!simplerect->draw) {
|
|
return;
|
|
}
|
|
|
|
self.x0 = simplerect->bbox_ulx;
|
|
self.y0 = simplerect->bbox_uly;
|
|
self.x1 = simplerect->bbox_lrx;
|
|
self.y1 = simplerect->bbox_lry;
|
|
|
|
art_irect_intersect (&intersection, &self, &buf->rect);
|
|
|
|
begin = MAX(simplerect->bbox_ulx, buf->rect.x0);
|
|
end = MIN((simplerect->bbox_lrx-1), buf->rect.x1);
|
|
|
|
sy = simplerect->bbox_uly;
|
|
ey = simplerect->bbox_lry-1;
|
|
|
|
if (simplerect->fill) {
|
|
|
|
// this can be useful for debugging/understanding how the canvas redraws
|
|
// stuff.
|
|
|
|
// gint randr, randg, randb;
|
|
// randr = random() % 255;
|
|
// randg = random() % 255;
|
|
// randb = random() % 255;
|
|
// PAINT_BOX(buf, randr, randg, randb, simplerect->fill_a, begin, sy, end, ey);
|
|
|
|
FAST_PAINT_BOX (buf, simplerect->fill_r, simplerect->fill_g, simplerect->fill_b, simplerect->fill_a,
|
|
intersection.x0, intersection.y0,
|
|
intersection.x1, intersection.y1);
|
|
|
|
}
|
|
|
|
for (i = 0; i < simplerect->outline_pixels; ++i) {
|
|
|
|
if (simplerect->outline_what & 0x1) {
|
|
if (begin == simplerect->bbox_ulx) {
|
|
PAINT_VERT(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, begin + i, sy, ey);
|
|
}
|
|
}
|
|
|
|
if (simplerect->outline_what & 0x2) {
|
|
if (end == (simplerect->bbox_lrx - 1)) {
|
|
PAINT_VERT(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, end - i, sy, ey + 1);
|
|
}
|
|
}
|
|
|
|
if (simplerect->outline_what & 0x4) {
|
|
PAINT_HORIZ(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, begin, end, sy+i);
|
|
}
|
|
|
|
if (simplerect->outline_what & 0x8) {
|
|
PAINT_HORIZ(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, begin, end + 1, ey-i);
|
|
}
|
|
}
|
|
}
|
|
|
|
#else /* SIMPLERECT_FAST_RENDERER */
|
|
|
|
static void
|
|
gnome_canvas_simplerect_render (GnomeCanvasItem *item,
|
|
GnomeCanvasBuf *buf)
|
|
{
|
|
GnomeCanvasSimpleRect *simplerect;
|
|
int end, begin;
|
|
int ey, sy;
|
|
unsigned int i;
|
|
|
|
simplerect = GNOME_CANVAS_SIMPLERECT (item);
|
|
|
|
if (parent_class->render) {
|
|
(*parent_class->render) (item, buf);
|
|
}
|
|
|
|
if (buf->is_bg) {
|
|
|
|
// this can be useful for debugging/understanding how the canvas redraws
|
|
// stuff.
|
|
|
|
// gint randr, randg, randb;
|
|
// randr = random() % 255;
|
|
// randg = random() % 255;
|
|
// randb = random() % 255;
|
|
// PAINT_BOX(buf, randr, randg, randb, 255, buf->rect.x0, buf->rect.y0, buf->rect.x1, buf->rect.y1);
|
|
|
|
gnome_canvas_buf_ensure_buf (buf);
|
|
buf->is_bg = FALSE;
|
|
}
|
|
|
|
if (!simplerect->draw) {
|
|
return;
|
|
}
|
|
|
|
begin = MAX(simplerect->bbox_ulx,buf->rect.x0);
|
|
end = MIN((simplerect->bbox_lrx-1),buf->rect.x1);
|
|
|
|
sy = simplerect->bbox_uly;
|
|
ey = simplerect->bbox_lry-1;
|
|
|
|
if (simplerect->fill) {
|
|
|
|
// this can be useful for debugging/understanding how the canvas redraws
|
|
// stuff.
|
|
|
|
// gint randr, randg, randb;
|
|
// randr = random() % 255;
|
|
// randg = random() % 255;
|
|
// randb = random() % 255;
|
|
// PAINT_BOX(buf, randr, randg, randb, simplerect->fill_a, begin, sy, end, ey);
|
|
|
|
PAINT_BOX(buf, simplerect->fill_r, simplerect->fill_g, simplerect->fill_b, simplerect->fill_a, begin, sy, end, ey);
|
|
}
|
|
|
|
for (i = 0; i < simplerect->outline_pixels; ++i) {
|
|
|
|
if (simplerect->outline_what & 0x1) {
|
|
if (begin == simplerect->bbox_ulx) {
|
|
PAINT_VERT(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, begin + i, sy, ey);
|
|
}
|
|
}
|
|
|
|
if (simplerect->outline_what & 0x2) {
|
|
if (end == (simplerect->bbox_lrx - 1)) {
|
|
PAINT_VERT(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, end - i, sy, ey + 1);
|
|
}
|
|
}
|
|
|
|
if (simplerect->outline_what & 0x4) {
|
|
PAINT_HORIZ(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, begin, end, sy+i);
|
|
}
|
|
|
|
if (simplerect->outline_what & 0x8) {
|
|
PAINT_HORIZ(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, begin, end + 1, ey-i);
|
|
}
|
|
}
|
|
}
|
|
#endif /* SIMPLERECT_FAST_RENDERER */
|
|
|
|
static void
|
|
gnome_canvas_simplerect_draw (GnomeCanvasItem *item,
|
|
GdkDrawable *drawable,
|
|
int x, int y,
|
|
int width, int height)
|
|
{
|
|
fprintf (stderr, "please don't use the CanvasSimpleRect item in a non-aa Canvas\n");
|
|
abort ();
|
|
}
|
|
|
|
static double
|
|
gnome_canvas_simplerect_point (GnomeCanvasItem *item, double x, double y, int cx, int cy, GnomeCanvasItem **actual_item)
|
|
{
|
|
GnomeCanvasSimpleRect *simplerect;
|
|
double x1, y1, x2, y2;
|
|
double dx, dy;
|
|
|
|
simplerect = GNOME_CANVAS_SIMPLERECT (item);
|
|
|
|
*actual_item = item;
|
|
|
|
/* Find the bounds for the rectangle plus its outline width */
|
|
|
|
gnome_canvas_simplerect_bounds (item, &x1, &y1, &x2, &y2);
|
|
|
|
/* Is point inside rectangle */
|
|
|
|
if ((x >= x1) && (y >= y1) && (x <= x2) && (y <= y2)) {
|
|
return 0.0;
|
|
}
|
|
|
|
/* Point is outside rectangle */
|
|
|
|
if (x < x1)
|
|
dx = x1 - x;
|
|
else if (x > x2)
|
|
dx = x - x2;
|
|
else
|
|
dx = 0.0;
|
|
|
|
if (y < y1)
|
|
dy = y1 - y;
|
|
else if (y > y2)
|
|
dy = y - y2;
|
|
else
|
|
dy = 0.0;
|
|
|
|
return sqrt (dx * dx + dy * dy);
|
|
}
|