+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <string.h>
+#include <gtk/gtk.h>
+
+#include "xournal.h"
+#include "xo-callbacks.h"
+#include "xo-interface.h"
+#include "xo-support.h"
+#include "xo-misc.h"
+#include "xo-paint.h"
+#include "xo-image.h"
+
+
+void callback_clipboard_get(GtkClipboard *clipboard,
+ GtkSelectionData *selection_data,
+ guint info, gpointer user_data)
+{
+ int length;
+
+ g_memmove(&length, user_data, sizeof(int));
+ gtk_selection_data_set(selection_data,
+ gdk_atom_intern("_XOURNAL", FALSE), 8, user_data, length);
+}
+
+void callback_clipboard_clear(GtkClipboard *clipboard, gpointer user_data)
+{
+ g_free(user_data);
+}
+
+void selection_to_clip(void)
+{
+ int bufsz, nitems, val;
+ char *buf, *p;
+ GList *list;
+ struct Item *item;
+ GtkTargetEntry target;
+
+ if (ui.selection == NULL) return;
+ bufsz = 2*sizeof(int) // bufsz, nitems
+ + sizeof(struct BBox); // bbox
+ nitems = 0;
+ for (list = ui.selection->items; list != NULL; list = list->next) {
+ item = (struct Item *)list->data;
+ nitems++;
+ if (item->type == ITEM_STROKE) {
+ bufsz+= sizeof(int) // type
+ + sizeof(struct Brush) // brush
+ + sizeof(int) // num_points
+ + 2*item->path->num_points*sizeof(double); // the points
+ if (item->brush.variable_width)
+ bufsz += (item->path->num_points-1)*sizeof(double); // the widths
+ }
+ else if (item->type == ITEM_TEXT) {
+ bufsz+= sizeof(int) // type
+ + sizeof(struct Brush) // brush
+ + 2*sizeof(double) // bbox upper-left
+ + sizeof(int) // text len
+ + strlen(item->text)+1 // text
+ + sizeof(int) // font_name len
+ + strlen(item->font_name)+1 // font_name
+ + sizeof(double); // font_size
+ }
+ else if (item->type == ITEM_IMAGE) {
+ if (item->image_png == NULL) {
+ set_cursor_busy(TRUE);
+ if (!gdk_pixbuf_save_to_buffer(item->image, &item->image_png, &item->image_png_len, "png", NULL, NULL))
+ item->image_png_len = 0; // failed for some reason, so forget it
+ set_cursor_busy(FALSE);
+ }
+ bufsz+= sizeof(int) // type
+ + sizeof(struct BBox)
+ + sizeof(gsize) // png_buflen
+ + item->image_png_len;
+ }
+ else bufsz+= sizeof(int); // type
+ }
+ p = buf = g_malloc(bufsz);
+ g_memmove(p, &bufsz, sizeof(int)); p+= sizeof(int);
+ g_memmove(p, &nitems, sizeof(int)); p+= sizeof(int);
+ g_memmove(p, &ui.selection->bbox, sizeof(struct BBox)); p+= sizeof(struct BBox);
+ for (list = ui.selection->items; list != NULL; list = list->next) {
+ item = (struct Item *)list->data;
+ g_memmove(p, &item->type, sizeof(int)); p+= sizeof(int);
+ if (item->type == ITEM_STROKE) {
+ g_memmove(p, &item->brush, sizeof(struct Brush)); p+= sizeof(struct Brush);
+ g_memmove(p, &item->path->num_points, sizeof(int)); p+= sizeof(int);
+ g_memmove(p, item->path->coords, 2*item->path->num_points*sizeof(double));
+ p+= 2*item->path->num_points*sizeof(double);
+ if (item->brush.variable_width) {
+ g_memmove(p, item->widths, (item->path->num_points-1)*sizeof(double));
+ p+= (item->path->num_points-1)*sizeof(double);
+ }
+ }
+ if (item->type == ITEM_TEXT) {
+ g_memmove(p, &item->brush, sizeof(struct Brush)); p+= sizeof(struct Brush);
+ g_memmove(p, &item->bbox.left, sizeof(double)); p+= sizeof(double);
+ g_memmove(p, &item->bbox.top, sizeof(double)); p+= sizeof(double);
+ val = strlen(item->text);
+ g_memmove(p, &val, sizeof(int)); p+= sizeof(int);
+ g_memmove(p, item->text, val+1); p+= val+1;
+ val = strlen(item->font_name);
+ g_memmove(p, &val, sizeof(int)); p+= sizeof(int);
+ g_memmove(p, item->font_name, val+1); p+= val+1;
+ g_memmove(p, &item->font_size, sizeof(double)); p+= sizeof(double);
+ }
+ if (item->type == ITEM_IMAGE) {
+ g_memmove(p, &item->bbox, sizeof(struct BBox)); p+= sizeof(struct BBox);
+ g_memmove(p, &item->image_png_len, sizeof(gsize)); p+= sizeof(gsize);
+ if (item->image_png_len > 0) {
+ g_memmove(p, item->image_png, item->image_png_len); p+= item->image_png_len;
+ }
+ }
+ }
+
+ target.target = "_XOURNAL";
+ target.flags = 0;
+ target.info = 0;
+
+ gtk_clipboard_set_with_data(gtk_clipboard_get(GDK_SELECTION_CLIPBOARD),
+ &target, 1,
+ callback_clipboard_get, callback_clipboard_clear, buf);
+}
+
+// local paste within xournal
+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!
+}
+
+// paste an external image
+void clipboard_paste_image(GdkPixbuf *pixbuf)
+{
+ double pt[2];
+
+ reset_selection();
+
+ get_current_pointer_coords(pt);
+ set_current_page(pt);
+
+ create_image_from_pixbuf(pixbuf, pt);
+}
+
+// work out what format the clipboard data is in, and paste accordingly
+void clipboard_paste(void)
+{
+ GtkSelectionData *sel_data;
+ GtkClipboard *clipboard;
+ GdkPixbuf *pixbuf;
+
+ if (ui.cur_layer == NULL) return;
+
+ ui.cur_item_type = ITEM_PASTE;
+ clipboard = gtk_clipboard_get(GDK_SELECTION_CLIPBOARD);
+ // try xournal data
+ sel_data = gtk_clipboard_wait_for_contents(
+ clipboard,
+ gdk_atom_intern("_XOURNAL", FALSE));
+ ui.cur_item_type = ITEM_NONE;
+ if (sel_data != NULL) {
+ clipboard_paste_from_xournal(sel_data);
+ return;
+ }
+ // try image data
+ pixbuf = gtk_clipboard_wait_for_image(clipboard);
+ if (pixbuf != NULL) {
+ clipboard_paste_image(pixbuf);
+ return;
+ }
+}
projects / xournal.git / commitdiff