static void
so_image_view_set_bounds (SheetObjectView *sov, double const *coords, gboolean visible)
{
GocItem *view = GOC_ITEM (GOC_GROUP (sov)->children->data);
double scale = goc_canvas_get_pixels_per_unit (view->canvas);
if (visible) {
double x, y, width, height;
double old_x1, old_y1, old_x2, old_y2, old_width, old_height;
GdkPixbuf *placeholder = g_object_get_data (G_OBJECT (view), "tile");
x = MIN (coords [0], coords [2]) / scale;
y = MIN (coords [1], coords [3]) / scale;
width = fabs (coords [2] - coords [0]) / scale;
height = fabs (coords [3] - coords [1]) / scale;
goc_item_get_bounds (view, &old_x1, &old_y1, &old_x2, &old_y2);
goc_item_set (view,
"x", x, "y", y,
"width", width, "height", height,
NULL);
/* regenerate the image if necessary */
old_width = fabs (old_x1 - old_x2);
old_height = fabs (old_y1 - old_y2);
if (placeholder != NULL &&
(fabs (width - old_width) > 0.5 || fabs (height - old_height) > 0.5)) {
GdkPixbuf *newimage = go_pixbuf_tile (placeholder,
(guint)width, (guint)height);
goc_item_set (view, "pixbuf", newimage, NULL);
g_object_unref (newimage);
}
goc_item_show (view);
} else
goc_item_hide (view);
}
void
goc_canvas_get_bounds (GocCanvas *canvas, double *x0, double *y0, double *x1, double *y1)
{
goc_item_get_bounds (GOC_ITEM (canvas->root), x0, y0, x1, y1);
}
static void
so_path_view_set_bounds (SheetObjectView *sov, double const *coords, gboolean visible)
{
GnmSOPathView *spv = (GnmSOPathView *) sov;
if (visible) {
SheetObject *so = sheet_object_view_get_so (sov);
GnmSOPath const *sop = GNM_SO_PATH (so);
GOPath *path;
double scale, x_scale, y_scale, x, y;
if ((sop->path == NULL && sop->paths == NULL) || sop->width <=0. || sop->height <=0.)
return;
scale = goc_canvas_get_pixels_per_unit (GOC_ITEM (sov)->canvas);
x_scale = fabs (coords[2] - coords[0]) / sop->width / scale;
y_scale = fabs (coords[3] - coords[1]) / sop->height / scale;
x = MIN (coords[0], coords[2]) / scale - sop->x_offset * x_scale;
y = MIN (coords[1], coords[3]) / scale - sop->y_offset * y_scale;
if (sop->path != NULL) {
path = go_path_scale (sop->path, x_scale, y_scale);
goc_item_set (spv->path, "x", x, "y", y, "path", path, NULL);
go_path_free (path);
} else {
unsigned i;
for (i = 0; i < sop->paths->len; i++) {
path = go_path_scale ((GOPath *) g_ptr_array_index (sop->paths, i), x_scale, y_scale);
goc_item_set (GOC_ITEM (g_ptr_array_index (spv->paths, i)), "x", x, "y", y, "path", path, NULL);
go_path_free (path);
}
}
if (spv->text != NULL && GOC_ITEM (spv->text)) {
double x0, y0, x1, y1;
if (spv->path)
goc_item_get_bounds (spv->path, &x0, &y0, &x1, &y1);
else {
unsigned i;
double mx, my, Mx, My;
x0 = y0 = G_MAXDOUBLE;
x1 = y1 = -G_MAXDOUBLE;
for (i = 0; i < spv->paths->len; i++) {
goc_item_get_bounds (GOC_ITEM (g_ptr_array_index (spv->paths, i)), &mx, &my, &Mx, &My);
if (mx < x0)
x0 = mx;
if (my < y0)
y0 = my;
if (Mx > x1)
x1 = Mx;
if (My > y1)
y1 = My;
}
}
x1 -= x0 + sop->margin_pts.left + sop->margin_pts.right;
y1 -= y0 + sop->margin_pts.top + sop->margin_pts.bottom;
x0 += x1 / 2. + sop->margin_pts.left;
y0 += y1 / 2. + sop->margin_pts.top;
x1 = MAX (x1, DBL_MIN);
y1 = MAX (y1, DBL_MIN);
goc_item_set (GOC_ITEM (spv->text),
"x", x0,
"y", y0,
"clip-height", y1,
"clip-width", x1,
"wrap-width", x1,
NULL);
}
} else
goc_item_hide (GOC_ITEM (sov));
}
static gboolean
goc_canvas_draw (GtkWidget *widget, cairo_t *cr)
{
double x0, y0, x1, y1;
double ax0, ay0, ax1, ay1;
double clip_x1, clip_y1, clip_x2, clip_y2;
GocCanvas *canvas = GOC_CANVAS (widget);
GdkEventExpose *event = (GdkEventExpose *) gtk_get_current_event ();
GocCanvasPrivate *priv = (GocCanvasPrivate *) canvas->priv;
cairo_rectangle_list_t *l = cairo_copy_clip_rectangle_list (cr);
int i, x, y;
if (GOC_IS_ITEM (priv->invalidated_item) && priv->invalid_region) {
/* evaluate the cairo clipped region and compare with the saved one */
cairo_region_t *region;
cairo_rectangle_int_t rect[l->num_rectangles];
for (i= 0; i < l->num_rectangles; i++) {
rect[i].x = l->rectangles[i].x;
rect[i].y = l->rectangles[i].y;
rect[i].width = l->rectangles[i].width;
rect[i].height = l->rectangles[i].height;
}
region = cairo_region_create_rectangles (rect, l->num_rectangles);
if (cairo_region_equal (priv->invalid_region, region)) {
cairo_rectangle_list_destroy (l);
cairo_region_destroy (region);
/* looks like each time we call gtk_widget_queue_draw*,
the draw event is fired twice */
if (priv->done) {
priv->invalidated_item = NULL;
cairo_region_destroy (priv->invalid_region);
priv->invalid_region = NULL;
} else {
goc_item_draw (priv->invalidated_item, cr);
priv->done = TRUE;
}
return TRUE;
}
cairo_region_destroy (region);
}
x = gtk_adjustment_get_value (gtk_scrollable_get_hadjustment (GTK_SCROLLABLE (canvas)));
y = gtk_adjustment_get_value (gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (canvas)));
cairo_translate (cr, -x, -y);
goc_item_get_bounds (GOC_ITEM (canvas->root),&x0, &y0, &x1, &y1);
for (i= 0; i < l->num_rectangles; i++) {
cairo_save (cr);
cairo_rectangle (cr, l->rectangles[i].x, l->rectangles[i].y,
l->rectangles[i].width, l->rectangles[i].height);
cairo_clip (cr);
clip_x1 = l->rectangles[i].x;
clip_y1 = l->rectangles[i].y;
clip_x2 = clip_x1 + l->rectangles[i].width;
clip_y2 = clip_y1 + l->rectangles[i].height;
if (canvas->direction == GOC_DIRECTION_RTL) {
ax1 = (double) (canvas->width - clip_x1) / canvas->pixels_per_unit + canvas->scroll_x1;
ax0 = (double) (canvas->width - clip_x2) / canvas->pixels_per_unit + canvas->scroll_x1;
} else {
ax0 = (double) clip_x1 / canvas->pixels_per_unit + canvas->scroll_x1;
ax1 = ((double) clip_x1 + event->area.width) / canvas->pixels_per_unit + canvas->scroll_x1;
}
ay0 = (double) clip_y1 / canvas->pixels_per_unit + canvas->scroll_y1;
ay1 = (double) clip_y2 / canvas->pixels_per_unit + canvas->scroll_y1;
if (x0 <= ax1 && x1 >= ax0 && y0 <= ay1 && y1 >= ay0) {
canvas->cur_event = (GdkEvent *) event;
goc_item_draw_region (GOC_ITEM (canvas->root), cr, ax0, ay0, ax1, ay1);
}
cairo_restore (cr);
}
cairo_rectangle_list_destroy (l);
return TRUE;
}
static void
cb_gnm_so_path_changed (GnmSOPath const *sop,
G_GNUC_UNUSED GParamSpec *pspec,
GnmSOPathView *group)
{
GList *ptr = GOC_GROUP (group)->children;
for (; ptr && ptr->data; ptr = ptr->next)
if (GOC_IS_PATH (ptr->data))
cb_gnm_so_path_style_changed (GOC_ITEM (ptr->data), sop);
if (sop->text != NULL && *sop->text != 0) {
/* set a font, a very bad solution, but will do until we move to GOString */
PangoFontDescription *desc = pango_font_description_from_string ("Sans 10");
GOStyle *style;
if (group->text == NULL) {
double x0, y0, x1, y1;
if (group->path)
goc_item_get_bounds (group->path, &x0, &y0, &x1, &y1);
else {
unsigned i;
double mx, my, Mx, My;
x0 = y0 = G_MAXDOUBLE;
x1 = y1 = -G_MAXDOUBLE;
for (i = 0; i < group->paths->len; i++) {
goc_item_get_bounds (GOC_ITEM (g_ptr_array_index (group->paths, i)), &mx, &my, &Mx, &My);
if (mx < x0)
x0 = mx;
if (my < y0)
y0 = my;
if (Mx > x1)
x1 = Mx;
if (My > y1)
y1 = My;
}
}
x1 -= x0 + sop->margin_pts.left + sop->margin_pts.right;
y1 -= y0 + sop->margin_pts.top + sop->margin_pts.bottom;
x0 += x1 / 2. + sop->margin_pts.left;
y0 += y1 / 2. + sop->margin_pts.top;
x1 = MAX (x1, DBL_MIN);
y1 = MAX (y1, DBL_MIN);
group->text = goc_item_new (GOC_GROUP (group), GOC_TYPE_TEXT,
"anchor", GO_ANCHOR_CENTER,
"clip", TRUE,
"x", x0,
"y", y0,
"clip-height", y1,
"clip-width", x1,
"wrap-width", x1,
"attributes", sop->markup,
NULL);
}
style = go_styled_object_get_style (GO_STYLED_OBJECT (group->text));
go_style_set_font_desc (style, desc);
goc_item_set (group->text,
"text", sop->text,
"attributes", sop->markup,
NULL);
} else if (group->text != NULL) {
g_object_unref (group->text);
group->text = NULL;
}
}