+++ /dev/null
-/* Image item type for GnomeCanvas widget
- *
- * 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 The Free Software Foundation
- *
- * Author: Federico Mena <federico@nuclecu.unam.mx>
- */
-
-
-#include <string.h> /* for memcpy() */
-#include <math.h>
-#include <stdio.h>
-#include "libart_lgpl/art_misc.h"
-#include "libart_lgpl/art_affine.h"
-#include "libart_lgpl/art_pixbuf.h"
-#include "libart_lgpl/art_rgb_pixbuf_affine.h"
-#include "canvas-imageframe.h"
-#include <libgnomecanvas/gnome-canvas-util.h>
-#include "gettext.h"
-#define _(Text) dgettext (PACKAGE,Text)
-
-//GTK2FIX
-//#include <libgnomecanvas/gnome-canvastypebuiltins.h>
-
-
-enum {
- PROP_0,
- PROP_PIXBUF,
- PROP_X,
- PROP_Y,
- PROP_WIDTH,
- PROP_HEIGHT,
- PROP_DRAWWIDTH,
- PROP_ANCHOR
-};
-
-
-static void gnome_canvas_imageframe_class_init(GnomeCanvasImageFrameClass* class) ;
-static void gnome_canvas_imageframe_init(GnomeCanvasImageFrame* image) ;
-static void gnome_canvas_imageframe_destroy(GtkObject* object) ;
-static void gnome_canvas_imageframe_set_property(GObject* object,
- guint prop_id,
- const GValue *value,
- GParamSpec *pspec);
-static void gnome_canvas_imageframe_get_property(GObject* object,
- guint prop_id,
- GValue *value,
- GParamSpec *pspec);
-static void gnome_canvas_imageframe_update(GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags) ;
-static void gnome_canvas_imageframe_realize(GnomeCanvasItem *item) ;
-static void gnome_canvas_imageframe_unrealize(GnomeCanvasItem *item) ;
-static void gnome_canvas_imageframe_draw(GnomeCanvasItem *item, GdkDrawable *drawable, int x, int y, int width, int height) ;
-static double gnome_canvas_imageframe_point(GnomeCanvasItem *item, double x, double y, int cx, int cy, GnomeCanvasItem **actual_item) ;
-static void gnome_canvas_imageframe_bounds(GnomeCanvasItem *item, double *x1, double *y1, double *x2, double *y2) ;
-static void gnome_canvas_imageframe_render(GnomeCanvasItem *item, GnomeCanvasBuf *buf) ;
-
-static GnomeCanvasItemClass *parent_class;
-
-
-GType
-gnome_canvas_imageframe_get_type (void)
-{
- static GType imageframe_type = 0;
-
- if (!imageframe_type) {
- GtkTypeInfo imageframe_info = {
- "GnomeCanvasImageFrame",
- sizeof (GnomeCanvasImageFrame),
- sizeof (GnomeCanvasImageFrameClass),
- (GtkClassInitFunc) gnome_canvas_imageframe_class_init,
- (GtkObjectInitFunc) gnome_canvas_imageframe_init,
- NULL, /* reserved_1 */
- NULL, /* reserved_2 */
- (GtkClassInitFunc) NULL
- };
-
- imageframe_type = gtk_type_unique (gnome_canvas_item_get_type (), &imageframe_info);
- }
-
- return imageframe_type;
-}
-
-static void
-gnome_canvas_imageframe_class_init (GnomeCanvasImageFrameClass *class)
-{
- GObjectClass *gobject_class;
- GtkObjectClass *object_class;
- GnomeCanvasItemClass *item_class;
-
- gobject_class = (GObjectClass *) class;
- object_class = (GtkObjectClass *) class;
- item_class = (GnomeCanvasItemClass *) class;
-
- parent_class = gtk_type_class (gnome_canvas_item_get_type ());
-
- gobject_class->set_property = gnome_canvas_imageframe_set_property;
- gobject_class->get_property = gnome_canvas_imageframe_get_property;
-
- g_object_class_install_property (gobject_class,
- PROP_PIXBUF,
- g_param_spec_pointer ("pixbuf",
- _("pixbuf"),
- _("the pixbuf"),
- G_PARAM_WRITABLE));
- g_object_class_install_property (gobject_class,
- PROP_X,
- g_param_spec_double ("x",
- _("x"),
- _("x coordinate of upper left corner of rect"),
- -G_MAXDOUBLE,
- G_MAXDOUBLE,
- 0.0,
- G_PARAM_READWRITE));
-
- g_object_class_install_property (gobject_class,
- PROP_Y,
- g_param_spec_double ("y",
- _("y"),
- _("y coordinate of upper left corner of rect "),
- -G_MAXDOUBLE,
- G_MAXDOUBLE,
- 0.0,
- G_PARAM_READWRITE));
- g_object_class_install_property (gobject_class,
- PROP_WIDTH,
- g_param_spec_double ("width",
- _("width"),
- _("the width"),
- -G_MAXDOUBLE,
- G_MAXDOUBLE,
- 0.0,
- G_PARAM_READWRITE));
-
- g_object_class_install_property (gobject_class,
- PROP_DRAWWIDTH,
- g_param_spec_double ("drawwidth",
- _("drawwidth"),
- _("drawn width"),
- -G_MAXDOUBLE,
- G_MAXDOUBLE,
- 0.0,
- G_PARAM_READWRITE));
- g_object_class_install_property (gobject_class,
- PROP_HEIGHT,
- g_param_spec_double ("height",
- _("height"),
- _("the height"),
- -G_MAXDOUBLE,
- G_MAXDOUBLE,
- 0.0,
- G_PARAM_READWRITE));
- g_object_class_install_property (gobject_class,
- PROP_ANCHOR,
- g_param_spec_enum ("anchor",
- _("anchor"),
- _("the anchor"),
- GTK_TYPE_ANCHOR_TYPE,
- GTK_ANCHOR_NW,
- G_PARAM_READWRITE));
-
- object_class->destroy = gnome_canvas_imageframe_destroy;
-
- item_class->update = gnome_canvas_imageframe_update;
- item_class->realize = gnome_canvas_imageframe_realize;
- item_class->unrealize = gnome_canvas_imageframe_unrealize;
- item_class->draw = gnome_canvas_imageframe_draw;
- item_class->point = gnome_canvas_imageframe_point;
- item_class->bounds = gnome_canvas_imageframe_bounds;
- item_class->render = gnome_canvas_imageframe_render;
-}
-
-static void
-gnome_canvas_imageframe_init (GnomeCanvasImageFrame *image)
-{
- image->x = 0.0;
- image->y = 0.0;
- image->width = 0.0;
- image->height = 0.0;
- image->drawwidth = 0.0;
- image->anchor = GTK_ANCHOR_CENTER;
-}
-
-static void
-gnome_canvas_imageframe_destroy (GtkObject *object)
-{
- GnomeCanvasImageFrame *image;
-
- g_return_if_fail (object != NULL);
- g_return_if_fail (GNOME_CANVAS_IS_CANVAS_IMAGEFRAME (object));
-
- image = GNOME_CANVAS_IMAGEFRAME (object);
-
- image->cwidth = 0;
- image->cheight = 0;
-
- if (image->pixbuf)
- {
- art_pixbuf_free (image->pixbuf);
- image->pixbuf = NULL;
- }
-
- if(GTK_OBJECT_CLASS (parent_class)->destroy)
- {
- (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
- }
-}
-
-/* Get's the image bounds expressed as item-relative coordinates. */
-static void
-get_bounds_item_relative (GnomeCanvasImageFrame *image, double *px1, double *py1, double *px2, double *py2)
-{
- GnomeCanvasItem *item;
- double x, y;
-
- item = GNOME_CANVAS_ITEM (image);
-
- /* Get item coordinates */
-
- x = image->x;
- y = image->y;
-
- /* Anchor image */
-
- switch (image->anchor) {
- case GTK_ANCHOR_NW:
- case GTK_ANCHOR_W:
- case GTK_ANCHOR_SW:
- break;
-
- case GTK_ANCHOR_N:
- case GTK_ANCHOR_CENTER:
- case GTK_ANCHOR_S:
- x -= image->width / 2;
- break;
-
- case GTK_ANCHOR_NE:
- case GTK_ANCHOR_E:
- case GTK_ANCHOR_SE:
- x -= image->width;
- break;
- }
-
- switch (image->anchor) {
- case GTK_ANCHOR_NW:
- case GTK_ANCHOR_N:
- case GTK_ANCHOR_NE:
- break;
-
- case GTK_ANCHOR_W:
- case GTK_ANCHOR_CENTER:
- case GTK_ANCHOR_E:
- y -= image->height / 2;
- break;
-
- case GTK_ANCHOR_SW:
- case GTK_ANCHOR_S:
- case GTK_ANCHOR_SE:
- y -= image->height;
- break;
- }
-
- /* Bounds */
-
- *px1 = x;
- *py1 = y;
- *px2 = x + image->width;
- *py2 = y + image->height;
-}
-
-static void
-gnome_canvas_imageframe_set_property (GObject *object,
- guint prop_id,
- const GValue *value,
- GParamSpec *pspec)
-{
- GnomeCanvasItem *item;
- GnomeCanvasImageFrame *image;
- int update;
- int calc_bounds;
-
- item = GNOME_CANVAS_ITEM (object);
- image = GNOME_CANVAS_IMAGEFRAME (object);
-
- update = FALSE;
- calc_bounds = FALSE;
-
- switch (prop_id) {
- case PROP_PIXBUF:
- if (item->canvas->aa && g_value_get_pointer (value)) {
- if (image->pixbuf != NULL)
- art_pixbuf_free (image->pixbuf);
- image->pixbuf = g_value_get_pointer (value);
- }
- update = TRUE;
- break;
-
- case PROP_X:
- image->x = g_value_get_double (value);
- update = TRUE;
- break;
-
- case PROP_Y:
- image->y = g_value_get_double (value);
- update = TRUE;
- break;
-
- case PROP_WIDTH:
- image->width = fabs (g_value_get_double (value));
- update = TRUE;
- break;
-
- case PROP_HEIGHT:
- image->height = fabs (g_value_get_double (value));
- update = TRUE;
- break;
-
- case PROP_DRAWWIDTH:
- image->drawwidth = fabs (g_value_get_double (value));
- update = TRUE;
- break;
-
- case PROP_ANCHOR:
- image->anchor = g_value_get_enum (value);
- update = TRUE;
- break;
-
- default:
- break;
- }
-
- if (update)
- gnome_canvas_item_request_update (item);
-}
-
-static void
-gnome_canvas_imageframe_get_property (GObject *object,
- guint prop_id,
- GValue *value,
- GParamSpec *pspec)
-{
- GnomeCanvasImageFrame *image;
-
- image = GNOME_CANVAS_IMAGEFRAME (object);
-
- switch (prop_id) {
-
- case PROP_X:
- g_value_set_double (value, image->x);
- break;
-
- case PROP_Y:
- g_value_set_double (value, image->y);
- break;
-
- case PROP_WIDTH:
- g_value_set_double (value, image->width);
- break;
-
- case PROP_HEIGHT:
- g_value_set_double (value, image->height);
- break;
-
- case PROP_DRAWWIDTH:
- g_value_set_double (value, image->drawwidth);
- break;
-
- case PROP_ANCHOR:
- g_value_set_enum (value, image->anchor);
- break;
-
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static void
-gnome_canvas_imageframe_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags)
-{
- GnomeCanvasImageFrame *image;
- ArtDRect i_bbox, c_bbox;
- int w = 0;
- int h = 0;
-
- image = GNOME_CANVAS_IMAGEFRAME (item);
-
- if (parent_class->update)
- (* parent_class->update) (item, affine, clip_path, flags);
-
- /* only works for non-rotated, non-skewed transforms */
- image->cwidth = (int) (image->width * affine[0] + 0.5);
- image->cheight = (int) (image->height * affine[3] + 0.5);
-
- if (image->pixbuf) {
- image->need_recalc = TRUE ;
- }
-
- get_bounds_item_relative (image, &i_bbox.x0, &i_bbox.y0, &i_bbox.x1, &i_bbox.y1);
- art_drect_affine_transform (&c_bbox, &i_bbox, affine);
-
- /* these values only make sense in the non-rotated, non-skewed case */
- image->cx = c_bbox.x0;
- image->cy = c_bbox.y0;
-
- /* add a fudge factor */
- c_bbox.x0--;
- c_bbox.y0--;
- c_bbox.x1++;
- c_bbox.y1++;
-
- gnome_canvas_update_bbox (item, c_bbox.x0, c_bbox.y0, c_bbox.x1, c_bbox.y1);
-
- if (image->pixbuf) {
- w = image->pixbuf->width;
- h = image->pixbuf->height;
- }
-
- image->affine[0] = (affine[0] * image->width) / w;
- image->affine[1] = (affine[1] * image->height) / h;
- image->affine[2] = (affine[2] * image->width) / w;
- image->affine[3] = (affine[3] * image->height) / h;
- image->affine[4] = i_bbox.x0 * affine[0] + i_bbox.y0 * affine[2] + affine[4];
- image->affine[5] = i_bbox.x0 * affine[1] + i_bbox.y0 * affine[3] + affine[5];
-}
-
-static void
-gnome_canvas_imageframe_realize (GnomeCanvasItem *item)
-{
- GnomeCanvasImageFrame *image;
-
- image = GNOME_CANVAS_IMAGEFRAME (item);
-
- if (parent_class->realize)
- (* parent_class->realize) (item);
-
-}
-
-static void
-gnome_canvas_imageframe_unrealize (GnomeCanvasItem *item)
-{
- GnomeCanvasImageFrame *image;
-
- image = GNOME_CANVAS_IMAGEFRAME(item);
-
- if (parent_class->unrealize)
- (* parent_class->unrealize) (item);
-}
-
-static void
-recalc_if_needed (GnomeCanvasImageFrame *image)
-{}
-
-static void
-gnome_canvas_imageframe_draw (GnomeCanvasItem *item, GdkDrawable *drawable,
- int x, int y, int width, int height)
-{
-}
-
-static double
-gnome_canvas_imageframe_point (GnomeCanvasItem *item, double x, double y,
- int cx, int cy, GnomeCanvasItem **actual_item)
-{
- GnomeCanvasImageFrame *image;
- int x1, y1, x2, y2;
- int dx, dy;
-
- image = GNOME_CANVAS_IMAGEFRAME (item);
-
- *actual_item = item;
-
- recalc_if_needed (image);
-
- x1 = image->cx - item->canvas->close_enough;
- y1 = image->cy - item->canvas->close_enough;
- x2 = image->cx + image->cwidth - 1 + item->canvas->close_enough;
- y2 = image->cy + image->cheight - 1 + item->canvas->close_enough;
-
- /* Hard case: is point inside image's gravity region? */
-
- //if ((cx >= x1) && (cy >= y1) && (cx <= x2) && (cy <= y2))
- //return dist_to_mask (image, cx, cy) / item->canvas->pixels_per_unit;
-
- /* Point is outside image */
-
- x1 += item->canvas->close_enough;
- y1 += item->canvas->close_enough;
- x2 -= item->canvas->close_enough;
- y2 -= item->canvas->close_enough;
-
- if (cx < x1)
- dx = x1 - cx;
- else if (cx > x2)
- dx = cx - x2;
- else
- dx = 0;
-
- if (cy < y1)
- dy = y1 - cy;
- else if (cy > y2)
- dy = cy - y2;
- else
- dy = 0;
-
- return sqrt (dx * dx + dy * dy) / item->canvas->pixels_per_unit;
-}
-
-static void
-gnome_canvas_imageframe_bounds (GnomeCanvasItem *item, double *x1, double *y1, double *x2, double *y2)
-{
- GnomeCanvasImageFrame *image;
-
- image = GNOME_CANVAS_IMAGEFRAME (item);
-
- *x1 = image->x;
- *y1 = image->y;
-
- switch (image->anchor) {
- case GTK_ANCHOR_NW:
- case GTK_ANCHOR_W:
- case GTK_ANCHOR_SW:
- break;
-
- case GTK_ANCHOR_N:
- case GTK_ANCHOR_CENTER:
- case GTK_ANCHOR_S:
- *x1 -= image->width / 2.0;
- break;
-
- case GTK_ANCHOR_NE:
- case GTK_ANCHOR_E:
- case GTK_ANCHOR_SE:
- *x1 -= image->width;
- break;
- }
-
- switch (image->anchor) {
- case GTK_ANCHOR_NW:
- case GTK_ANCHOR_N:
- case GTK_ANCHOR_NE:
- break;
-
- case GTK_ANCHOR_W:
- case GTK_ANCHOR_CENTER:
- case GTK_ANCHOR_E:
- *y1 -= image->height / 2.0;
- break;
-
- case GTK_ANCHOR_SW:
- case GTK_ANCHOR_S:
- case GTK_ANCHOR_SE:
- *y1 -= image->height;
- break;
- }
-
- *x2 = *x1 + image->width;
- *y2 = *y1 + image->height;
-}
-
-static void
-gnome_canvas_imageframe_render (GnomeCanvasItem *item, GnomeCanvasBuf *buf)
-{
- GnomeCanvasImageFrame *image;
-
- image = GNOME_CANVAS_IMAGEFRAME (item);
-
- gnome_canvas_buf_ensure_buf (buf);
-
-#ifdef VERBOSE
- {
- char str[128];
- art_affine_to_string (str, image->affine);
- g_print ("gnome_canvas_imageframe_render %s\n", str);
- }
-#endif
-
- art_rgb_pixbuf_affine (buf->buf,
- buf->rect.x0, buf->rect.y0, buf->rect.x1, buf->rect.y1,
- buf->buf_rowstride,
- image->pixbuf,
- image->affine,
- ART_FILTER_NEAREST, NULL);
-
- buf->is_bg = 0;
-}
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