void selection_delete(void)
{
struct UndoErasureData *erasure;
GList *itemlist;
struct Item *item;
if (ui.selection == NULL) return;
prepare_new_undo();
undo->type = ITEM_ERASURE;
undo->layer = ui.selection->layer;
undo->erasurelist = NULL;
for (itemlist = ui.selection->items; itemlist!=NULL; itemlist = itemlist->next) {
item = (struct Item *)itemlist->data;
if (item->canvas_item!=NULL)
gtk_object_destroy(GTK_OBJECT(item->canvas_item));
erasure = g_new(struct UndoErasureData, 1);
erasure->item = item;
erasure->npos = g_list_index(ui.selection->layer->items, item);
erasure->nrepl = 0;
erasure->replacement_items = NULL;
ui.selection->layer->items = g_list_remove(ui.selection->layer->items, item);
ui.selection->layer->nitems--;
undo->erasurelist = g_list_prepend(undo->erasurelist, erasure);
}
reset_selection();
/* NOTE: the erasurelist is built backwards; this guarantees that,
upon undo, the erasure->npos fields give the correct position
where each item should be reinserted as the list is traversed in
the forward direction */
}
void remove_recognized_strokes(struct RecoSegment *rs, int num_old_items)
{
struct Item *old_item;
int i, shift;
struct UndoErasureData *erasure;
old_item = NULL;
prepare_new_undo();
undo->type = ITEM_RECOGNIZER;
undo->layer = ui.cur_layer;
undo->erasurelist = NULL;
shift = 0;
for (i=0; i<num_old_items; i++) {
if (rs[i].item == old_item) continue; // already done
old_item = rs[i].item;
erasure = g_new(struct UndoErasureData, 1);
erasure->item = old_item;
erasure->npos = g_list_index(ui.cur_layer->items, old_item) + (shift++);
erasure->nrepl = 0;
erasure->replacement_items = NULL;
undo->erasurelist = g_list_append(undo->erasurelist, erasure);
if (old_item->canvas_item != NULL)
gtk_object_destroy(GTK_OBJECT(old_item->canvas_item));
ui.cur_layer->items = g_list_remove(ui.cur_layer->items, old_item);
ui.cur_layer->nitems--;
}
}
// paste external text
void clipboard_paste_text(gchar *text)
{
struct Item *item;
double pt[2];
reset_selection();
get_current_pointer_coords(pt);
set_current_page(pt);
ui.selection = g_new(struct Selection, 1);
ui.selection->type = ITEM_SELECTRECT;
ui.selection->layer = ui.cur_layer;
ui.selection->items = NULL;
item = g_new(struct Item, 1);
ui.selection->items = g_list_append(ui.selection->items, item);
ui.cur_layer->items = g_list_append(ui.cur_layer->items, item);
ui.cur_layer->nitems++;
item->type = ITEM_TEXT;
g_memmove(&(item->brush), &(ui.brushes[ui.cur_mapping][TOOL_PEN]), sizeof(struct Brush));
item->text = text; // text was newly allocated, we keep it
item->font_name = g_strdup(ui.font_name);
item->font_size = ui.font_size;
item->bbox.left = pt[0]; item->bbox.top = pt[1];
make_canvas_item_one(ui.cur_layer->group, item);
update_item_bbox(item);
// move the text to fit on the page if needed
if (item->bbox.right > ui.cur_page->width) item->bbox.left += ui.cur_page->width-item->bbox.right;
if (item->bbox.left < 0) item->bbox.left = 0;
if (item->bbox.bottom > ui.cur_page->height) item->bbox.top += ui.cur_page->height-item->bbox.bottom;
if (item->bbox.top < 0) item->bbox.top = 0;
gnome_canvas_item_set(item->canvas_item, "x", item->bbox.left, "y", item->bbox.top, NULL);
update_item_bbox(item);
ui.selection->bbox = item->bbox;
ui.selection->canvas_item = gnome_canvas_item_new(ui.cur_layer->group,
gnome_canvas_rect_get_type(), "width-pixels", 1,
"outline-color-rgba", 0x000000ff,
"fill-color-rgba", 0x80808040,
"x1", ui.selection->bbox.left, "x2", ui.selection->bbox.right,
"y1", ui.selection->bbox.top, "y2", ui.selection->bbox.bottom, NULL);
make_dashed(ui.selection->canvas_item);
prepare_new_undo();
undo->type = ITEM_PASTE;
undo->layer = ui.cur_layer;
undo->itemlist = g_list_copy(ui.selection->items);
update_copy_paste_enabled();
update_color_menu();
update_thickness_buttons();
update_color_buttons();
update_font_button();
update_cursor(); // FIXME: can't know if pointer is within selection!
}
void create_image_from_pixbuf(GdkPixbuf *pixbuf, double *pt)
{
double scale;
struct Item *item;
item = g_new(struct Item, 1);
item->type = ITEM_IMAGE;
item->canvas_item = NULL;
item->bbox.left = pt[0];
item->bbox.top = pt[1];
item->image = pixbuf;
item->image_png = NULL;
item->image_png_len = 0;
// Scale at native size, unless that won't fit, in which case we shrink it down.
scale = 1 / ui.zoom;
if ((scale * gdk_pixbuf_get_width(item->image)) > ui.cur_page->width - item->bbox.left)
scale = (ui.cur_page->width - item->bbox.left) / gdk_pixbuf_get_width(item->image);
if ((scale * gdk_pixbuf_get_height(item->image)) > ui.cur_page->height - item->bbox.top)
scale = (ui.cur_page->height - item->bbox.top) / gdk_pixbuf_get_height(item->image);
item->bbox.right = item->bbox.left + scale * gdk_pixbuf_get_width(item->image);
item->bbox.bottom = item->bbox.top + scale * gdk_pixbuf_get_height(item->image);
ui.cur_layer->items = g_list_append(ui.cur_layer->items, item);
ui.cur_layer->nitems++;
make_canvas_item_one(ui.cur_layer->group, item);
// add undo information
prepare_new_undo();
undo->type = ITEM_IMAGE;
undo->item = item;
undo->layer = ui.cur_layer;
ui.cur_item = NULL;
ui.cur_item_type = ITEM_NONE;
// select image
reset_selection();
ui.selection = g_new0(struct Selection, 1);
ui.selection->type = ITEM_SELECTRECT;
ui.selection->layer = ui.cur_layer;
ui.selection->bbox = item->bbox;
ui.selection->items = g_list_append(ui.selection->items, item);
ui.selection->canvas_item = gnome_canvas_item_new(ui.cur_layer->group,
gnome_canvas_rect_get_type(), "width-pixels", 1,
"outline-color-rgba", 0x000000ff,
"fill-color-rgba", 0x80808040,
"x1", ui.selection->bbox.left, "x2", ui.selection->bbox.right,
"y1", ui.selection->bbox.top, "y2", ui.selection->bbox.bottom, NULL);
make_dashed(ui.selection->canvas_item);
update_copy_paste_enabled();
}
void finalize_resizesel(void)
{
struct Item *item;
// build the affine transformation
double offset_x, offset_y, scaling_x, scaling_y;
scaling_x = (ui.selection->new_x2 - ui.selection->new_x1) /
(ui.selection->bbox.right - ui.selection->bbox.left);
scaling_y = (ui.selection->new_y2 - ui.selection->new_y1) /
(ui.selection->bbox.bottom - ui.selection->bbox.top);
// couldn't undo a resize-by-zero...
if (fabs(scaling_x)<SCALING_EPSILON) scaling_x = SCALING_EPSILON;
if (fabs(scaling_y)<SCALING_EPSILON) scaling_y = SCALING_EPSILON;
offset_x = ui.selection->new_x1 - ui.selection->bbox.left * scaling_x;
offset_y = ui.selection->new_y1 - ui.selection->bbox.top * scaling_y;
if (ui.selection->items != NULL) {
// create the undo information
prepare_new_undo();
undo->type = ITEM_RESIZESEL;
undo->itemlist = g_list_copy(ui.selection->items);
undo->auxlist = NULL;
undo->scaling_x = scaling_x;
undo->scaling_y = scaling_y;
undo->val_x = offset_x;
undo->val_y = offset_y;
// actually do the resize operation
resize_journal_items_by(ui.selection->items, scaling_x, scaling_y, offset_x, offset_y);
}
if (scaling_x>0) {
ui.selection->bbox.left = ui.selection->new_x1;
ui.selection->bbox.right = ui.selection->new_x2;
} else {
ui.selection->bbox.left = ui.selection->new_x2;
ui.selection->bbox.right = ui.selection->new_x1;
}
if (scaling_y>0) {
ui.selection->bbox.top = ui.selection->new_y1;
ui.selection->bbox.bottom = ui.selection->new_y2;
} else {
ui.selection->bbox.top = ui.selection->new_y2;
ui.selection->bbox.bottom = ui.selection->new_y1;
}
make_dashed(ui.selection->canvas_item);
ui.cur_item_type = ITEM_NONE;
update_cursor();
}
void finalize_movesel(void)
{
GList *list, *link;
if (ui.selection->items != NULL) {
prepare_new_undo();
undo->type = ITEM_MOVESEL;
undo->itemlist = g_list_copy(ui.selection->items);
undo->val_x = ui.selection->last_x - ui.selection->anchor_x;
undo->val_y = ui.selection->last_y - ui.selection->anchor_y;
undo->layer = ui.selection->layer;
undo->layer2 = ui.selection->move_layer;
undo->auxlist = NULL;
// build auxlist = pointers to Item's just before ours (for depths)
for (list = ui.selection->items; list!=NULL; list = list->next) {
link = g_list_find(ui.selection->layer->items, list->data);
if (link!=NULL) link = link->prev;
undo->auxlist = g_list_append(undo->auxlist, ((link!=NULL) ? link->data : NULL));
}
ui.selection->layer = ui.selection->move_layer;
move_journal_items_by(undo->itemlist, undo->val_x, undo->val_y,
undo->layer, undo->layer2,
(undo->layer == undo->layer2)?undo->auxlist:NULL);
}
if (ui.selection->move_pageno!=ui.selection->orig_pageno)
do_switch_page(ui.selection->move_pageno, FALSE, FALSE);
if (ui.cur_item_type == ITEM_MOVESEL_VERT)
reset_selection();
else {
ui.selection->bbox.left += undo->val_x;
ui.selection->bbox.right += undo->val_x;
ui.selection->bbox.top += undo->val_y;
ui.selection->bbox.bottom += undo->val_y;
make_dashed(ui.selection->canvas_item);
/* update selection box object's offset to be trivial, and its internal
coordinates to agree with those of the bbox; need this since resize
operations will modify the box by setting its coordinates directly */
gnome_canvas_item_affine_absolute(ui.selection->canvas_item, NULL);
gnome_canvas_item_set(ui.selection->canvas_item,
"x1", ui.selection->bbox.left, "x2", ui.selection->bbox.right,
"y1", ui.selection->bbox.top, "y2", ui.selection->bbox.bottom, NULL);
}
ui.cur_item_type = ITEM_NONE;
update_cursor();
}
void rethicken_selection(int val)
{
GList *itemlist;
struct Item *item;
struct Brush *brush;
GnomeCanvasGroup *group;
if (ui.selection == NULL) return;
prepare_new_undo();
undo->type = ITEM_REPAINTSEL;
undo->itemlist = NULL;
undo->auxlist = NULL;
for (itemlist = ui.selection->items; itemlist!=NULL; itemlist = itemlist->next) {
item = (struct Item *)itemlist->data;
if (item->type != ITEM_STROKE || item->brush.tool_type!=TOOL_PEN) continue;
// store info for undo
undo->itemlist = g_list_append(undo->itemlist, item);
brush = (struct Brush *)g_malloc(sizeof(struct Brush));
g_memmove(brush, &(item->brush), sizeof(struct Brush));
undo->auxlist = g_list_append(undo->auxlist, brush);
// repaint the stroke
item->brush.thickness_no = val;
item->brush.thickness = predef_thickness[TOOL_PEN][val];
if (item->canvas_item!=NULL) {
if (!item->brush.variable_width)
gnome_canvas_item_set(item->canvas_item,
"width-units", item->brush.thickness, NULL);
else {
group = (GnomeCanvasGroup *) item->canvas_item->parent;
gtk_object_destroy(GTK_OBJECT(item->canvas_item));
item->brush.variable_width = FALSE;
make_canvas_item_one(group, item);
}
}
}
}
void recolor_selection(int color_no, guint color_rgba)
{
GList *itemlist;
struct Item *item;
struct Brush *brush;
GnomeCanvasGroup *group;
if (ui.selection == NULL) return;
prepare_new_undo();
undo->type = ITEM_REPAINTSEL;
undo->itemlist = NULL;
undo->auxlist = NULL;
for (itemlist = ui.selection->items; itemlist!=NULL; itemlist = itemlist->next) {
item = (struct Item *)itemlist->data;
if (item->type != ITEM_STROKE && item->type != ITEM_TEXT) continue;
if (item->type == ITEM_STROKE && item->brush.tool_type!=TOOL_PEN) continue;
// store info for undo
undo->itemlist = g_list_append(undo->itemlist, item);
brush = (struct Brush *)g_malloc(sizeof(struct Brush));
g_memmove(brush, &(item->brush), sizeof(struct Brush));
undo->auxlist = g_list_append(undo->auxlist, brush);
// repaint the stroke
item->brush.color_no = color_no;
item->brush.color_rgba = color_rgba | 0xff; // no alpha
if (item->canvas_item!=NULL) {
if (!item->brush.variable_width)
gnome_canvas_item_set(item->canvas_item,
"fill-color-rgba", item->brush.color_rgba, NULL);
else {
group = (GnomeCanvasGroup *) item->canvas_item->parent;
gtk_object_destroy(GTK_OBJECT(item->canvas_item));
make_canvas_item_one(group, item);
}
}
}
}
// paste xournal native data
void clipboard_paste_from_xournal(GtkSelectionData *sel_data)
{
unsigned char *p;
int nitems, npts, i, len;
struct Item *item;
double hoffset, voffset, cx, cy;
double *pf;
int sx, sy, wx, wy;
reset_selection();
ui.selection = g_new(struct Selection, 1);
p = sel_data->data + sizeof(int);
g_memmove(&nitems, p, sizeof(int)); p+= sizeof(int);
ui.selection->type = ITEM_SELECTRECT;
ui.selection->layer = ui.cur_layer;
g_memmove(&ui.selection->bbox, p, sizeof(struct BBox)); p+= sizeof(struct BBox);
ui.selection->items = NULL;
// find by how much we translate the pasted selection
gnome_canvas_get_scroll_offsets(canvas, &sx, &sy);
gdk_window_get_geometry(GTK_WIDGET(canvas)->window, NULL, NULL, &wx, &wy, NULL);
gnome_canvas_window_to_world(canvas, sx + wx/2, sy + wy/2, &cx, &cy);
cx -= ui.cur_page->hoffset;
cy -= ui.cur_page->voffset;
if (cx + (ui.selection->bbox.right-ui.selection->bbox.left)/2 > ui.cur_page->width)
cx = ui.cur_page->width - (ui.selection->bbox.right-ui.selection->bbox.left)/2;
if (cx - (ui.selection->bbox.right-ui.selection->bbox.left)/2 < 0)
cx = (ui.selection->bbox.right-ui.selection->bbox.left)/2;
if (cy + (ui.selection->bbox.bottom-ui.selection->bbox.top)/2 > ui.cur_page->height)
cy = ui.cur_page->height - (ui.selection->bbox.bottom-ui.selection->bbox.top)/2;
if (cy - (ui.selection->bbox.bottom-ui.selection->bbox.top)/2 < 0)
cy = (ui.selection->bbox.bottom-ui.selection->bbox.top)/2;
hoffset = cx - (ui.selection->bbox.right+ui.selection->bbox.left)/2;
voffset = cy - (ui.selection->bbox.top+ui.selection->bbox.bottom)/2;
ui.selection->bbox.left += hoffset;
ui.selection->bbox.right += hoffset;
ui.selection->bbox.top += voffset;
ui.selection->bbox.bottom += voffset;
ui.selection->canvas_item = gnome_canvas_item_new(ui.cur_layer->group,
gnome_canvas_rect_get_type(), "width-pixels", 1,
"outline-color-rgba", 0x000000ff,
"fill-color-rgba", 0x80808040,
"x1", ui.selection->bbox.left, "x2", ui.selection->bbox.right,
"y1", ui.selection->bbox.top, "y2", ui.selection->bbox.bottom, NULL);
make_dashed(ui.selection->canvas_item);
while (nitems-- > 0) {
item = g_new(struct Item, 1);
ui.selection->items = g_list_append(ui.selection->items, item);
ui.cur_layer->items = g_list_append(ui.cur_layer->items, item);
ui.cur_layer->nitems++;
g_memmove(&item->type, p, sizeof(int)); p+= sizeof(int);
if (item->type == ITEM_STROKE) {
g_memmove(&item->brush, p, sizeof(struct Brush)); p+= sizeof(struct Brush);
g_memmove(&npts, p, sizeof(int)); p+= sizeof(int);
item->path = gnome_canvas_points_new(npts);
pf = (double *)p;
for (i=0; i<npts; i++) {
item->path->coords[2*i] = pf[2*i] + hoffset;
item->path->coords[2*i+1] = pf[2*i+1] + voffset;
}
p+= 2*item->path->num_points*sizeof(double);
if (item->brush.variable_width) {
item->widths = g_memdup(p, (item->path->num_points-1)*sizeof(double));
p+= (item->path->num_points-1)*sizeof(double);
}
else item->widths = NULL;
update_item_bbox(item);
make_canvas_item_one(ui.cur_layer->group, item);
}
if (item->type == ITEM_TEXT) {
g_memmove(&item->brush, p, sizeof(struct Brush)); p+= sizeof(struct Brush);
g_memmove(&item->bbox.left, p, sizeof(double)); p+= sizeof(double);
g_memmove(&item->bbox.top, p, sizeof(double)); p+= sizeof(double);
item->bbox.left += hoffset;
item->bbox.top += voffset;
g_memmove(&len, p, sizeof(int)); p+= sizeof(int);
item->text = g_malloc(len+1);
g_memmove(item->text, p, len+1); p+= len+1;
g_memmove(&len, p, sizeof(int)); p+= sizeof(int);
item->font_name = g_malloc(len+1);
g_memmove(item->font_name, p, len+1); p+= len+1;
g_memmove(&item->font_size, p, sizeof(double)); p+= sizeof(double);
make_canvas_item_one(ui.cur_layer->group, item);
}
if (item->type == ITEM_IMAGE) {
item->canvas_item = NULL;
item->image_png = NULL;
item->image_png_len = 0;
g_memmove(&item->bbox, p, sizeof(struct BBox)); p+= sizeof(struct BBox);
item->bbox.left += hoffset;
item->bbox.right += hoffset;
item->bbox.top += voffset;
item->bbox.bottom += voffset;
g_memmove(&item->image_png_len, p, sizeof(gsize)); p+= sizeof(gsize);
if (item->image_png_len > 0) {
item->image_png = g_memdup(p, item->image_png_len);
item->image = pixbuf_from_buffer(item->image_png, item->image_png_len);
p+= item->image_png_len;
} else {
item->image = NULL;
}
make_canvas_item_one(ui.cur_layer->group, item);
}
}
prepare_new_undo();
undo->type = ITEM_PASTE;
undo->layer = ui.cur_layer;
undo->itemlist = g_list_copy(ui.selection->items);
gtk_selection_data_free(sel_data);
update_copy_paste_enabled();
update_color_menu();
update_thickness_buttons();
update_color_buttons();
update_font_button();
update_cursor(); // FIXME: can't know if pointer is within selection!
}