286 lines
11 KiB
C
286 lines
11 KiB
C
/**************************************************************************
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* Copyright (C) 2017 tint2 authors
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "drag_and_drop.h"
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#include "panel.h"
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#include "server.h"
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#include "task.h"
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// Drag and Drop state variables
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static Window dnd_source_window;
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static Window dnd_target_window;
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static int dnd_version;
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static Atom dnd_selection;
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static Atom dnd_atom;
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static int dnd_sent_request;
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static char *dnd_launcher_exec;
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static gboolean dnd_debug = FALSE;
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gboolean hidden_panel_shown_for_dnd;
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void dnd_init()
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{
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dnd_source_window = 0;
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dnd_target_window = 0;
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dnd_version = 0;
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dnd_selection = XInternAtom(server.display, "PRIMARY", 0);
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dnd_atom = None;
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dnd_sent_request = 0;
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dnd_launcher_exec = 0;
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hidden_panel_shown_for_dnd = FALSE;
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}
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void handle_dnd_enter(XClientMessageEvent *e)
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{
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dnd_atom = None;
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int more_than_3 = e->data.l[1] & 1;
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dnd_source_window = e->data.l[0];
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dnd_version = (e->data.l[1] >> 24);
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if (dnd_debug) {
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fprintf(stderr, "tint2: DnD %s:%d: DnDEnter\n", __FILE__, __LINE__);
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fprintf(stderr,
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"DnD %s:%d: DnDEnter. Supports > 3 types = %s\n",
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__FILE__,
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__LINE__,
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more_than_3 ? "yes" : "no");
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fprintf(stderr, "tint2: DnD %s:%d: Protocol version = %d\n", __FILE__, __LINE__, dnd_version);
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fprintf(stderr, "tint2: DnD %s:%d: Type 1 = %s\n", __FILE__, __LINE__, GetAtomName(server.display, e->data.l[2]));
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fprintf(stderr, "tint2: DnD %s:%d: Type 2 = %s\n", __FILE__, __LINE__, GetAtomName(server.display, e->data.l[3]));
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fprintf(stderr, "tint2: DnD %s:%d: Type 3 = %s\n", __FILE__, __LINE__, GetAtomName(server.display, e->data.l[4]));
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}
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// Query which conversions are available and pick the best
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if (more_than_3) {
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// Fetch the list of possible conversions
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// Notice the similarity to TARGETS with paste.
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Property p = read_property(server.display, dnd_source_window, server.atom.XdndTypeList);
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dnd_atom = pick_target_from_targets(server.display, p);
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XFree(p.data);
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} else {
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// Use the available list
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dnd_atom = pick_target_from_atoms(server.display, e->data.l[2], e->data.l[3], e->data.l[4]);
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}
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if (dnd_debug)
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fprintf(stderr, "tint2: DnD %s:%d: Requested type = %s\n", __FILE__, __LINE__, GetAtomName(server.display, dnd_atom));
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}
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void handle_dnd_position(XClientMessageEvent *e)
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{
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dnd_target_window = e->window;
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int accept = 0;
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Panel *panel = get_panel(e->window);
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int x, y, mapX, mapY;
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Window child;
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x = (e->data.l[2] >> 16) & 0xFFFF;
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y = e->data.l[2] & 0xFFFF;
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XTranslateCoordinates(server.display, server.root_win, e->window, x, y, &mapX, &mapY, &child);
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Task *task = click_task(panel, mapX, mapY);
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if (task) {
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if (task->desktop != server.desktop)
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change_desktop(task->desktop);
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task_handle_mouse_event(task, TOGGLE);
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} else {
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LauncherIcon *icon = click_launcher_icon(panel, mapX, mapY);
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if (icon) {
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accept = 1;
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dnd_launcher_exec = icon->cmd;
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} else {
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dnd_launcher_exec = 0;
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}
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}
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// send XdndStatus event to get more XdndPosition events
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XClientMessageEvent se;
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se.type = ClientMessage;
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se.window = e->data.l[0];
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se.message_type = server.atom.XdndStatus;
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se.format = 32;
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se.data.l[0] = e->window; // XID of the target window
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se.data.l[1] = accept ? 1 : 0; // bit 0: accept drop bit 1: send XdndPosition events if inside rectangle
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se.data.l[2] = 0; // Rectangle x,y for which no more XdndPosition events
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se.data.l[3] = (1 << 16) | 1; // Rectangle w,h for which no more XdndPosition events
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if (accept) {
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se.data.l[4] = dnd_version >= 2 ? e->data.l[4] : server.atom.XdndActionCopy;
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} else {
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se.data.l[4] = None; // None = drop will not be accepted
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}
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XSendEvent(server.display, e->data.l[0], False, NoEventMask, (XEvent *)&se);
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}
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void handle_dnd_drop(XClientMessageEvent *e)
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{
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if (dnd_target_window && dnd_launcher_exec) {
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if (dnd_version >= 1) {
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XConvertSelection(server.display,
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server.atom.XdndSelection,
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XA_STRING,
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dnd_selection,
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dnd_target_window,
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e->data.l[2]);
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} else {
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XConvertSelection(server.display,
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server.atom.XdndSelection,
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XA_STRING,
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dnd_selection,
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dnd_target_window,
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CurrentTime);
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}
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} else {
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// The source is sending anyway, despite instructions to the contrary.
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// So reply that we're not interested.
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XClientMessageEvent m;
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memset(&m, 0, sizeof(m));
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m.type = ClientMessage;
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m.display = e->display;
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m.window = e->data.l[0];
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m.message_type = server.atom.XdndFinished;
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m.format = 32;
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m.data.l[0] = dnd_target_window;
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m.data.l[1] = 0;
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m.data.l[2] = None; // Failed.
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XSendEvent(server.display, e->data.l[0], False, NoEventMask, (XEvent *)&m);
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}
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}
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void handle_dnd_selection_notify(XSelectionEvent *e)
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{
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Atom target = e->target;
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if (dnd_debug) {
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fprintf(stderr, "tint2: DnD %s:%d: A selection notify has arrived!\n", __FILE__, __LINE__);
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fprintf(stderr,
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"DnD %s:%d: Selection atom = %s\n",
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__FILE__,
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__LINE__,
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GetAtomName(server.display, e->selection));
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fprintf(stderr, "tint2: DnD %s:%d: Target atom = %s\n", __FILE__, __LINE__, GetAtomName(server.display, target));
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fprintf(stderr,
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"DnD %s:%d: Property atom = %s\n",
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__FILE__,
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__LINE__,
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GetAtomName(server.display, e->property));
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}
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if (e->property != None && dnd_launcher_exec) {
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Property prop = read_property(server.display, dnd_target_window, dnd_selection);
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// If we're being given a list of targets (possible conversions)
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if (target == server.atom.TARGETS && !dnd_sent_request) {
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dnd_sent_request = 1;
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dnd_atom = pick_target_from_targets(server.display, prop);
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if (dnd_atom == None) {
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if (dnd_debug)
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fprintf(stderr, "tint2: No matching datatypes.\n");
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} else {
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// Request the data type we are able to select
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if (dnd_debug)
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fprintf(stderr, "tint2: Now requsting type %s", GetAtomName(server.display, dnd_atom));
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XConvertSelection(server.display,
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dnd_selection,
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dnd_atom,
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dnd_selection,
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dnd_target_window,
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CurrentTime);
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}
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} else if (target == dnd_atom) {
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// Dump the binary data
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if (dnd_debug) {
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fprintf(stderr, "tint2: DnD %s:%d: Data begins:\n", __FILE__, __LINE__);
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fprintf(stderr, "tint2: --------\n");
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for (int i = 0; i < prop.nitems * prop.format / 8; i++)
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fprintf(stderr, "tint2: %c", ((char *)prop.data)[i]);
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fprintf(stderr, "tint2: --------\n");
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}
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int cmd_length = 0;
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cmd_length += 1; // (
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cmd_length += strlen(dnd_launcher_exec) + 1; // exec + space
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cmd_length += 1; // open double quotes
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for (int i = 0; i < prop.nitems * prop.format / 8; i++) {
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char c = ((char *)prop.data)[i];
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if (c == '\n') {
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if (i < prop.nitems * prop.format / 8 - 1) {
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cmd_length += 3; // close double quotes, space, open double quotes
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}
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} else if (c == '\r') {
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// Nothing to do
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} else {
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cmd_length += 1; // 1 character
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if (c == '`' || c == '$' || c == '\\') {
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cmd_length += 1; // escape with one backslash
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}
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}
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}
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cmd_length += 1; // close double quotes
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cmd_length += 2; // &)
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cmd_length += 1; // terminator
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char *cmd = (char *)calloc(cmd_length, 1);
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cmd[0] = '\0';
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strcat(cmd, "(");
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strcat(cmd, dnd_launcher_exec);
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strcat(cmd, " \"");
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for (int i = 0; i < prop.nitems * prop.format / 8; i++) {
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char c = ((char *)prop.data)[i];
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if (c == '\n') {
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if (i < prop.nitems * prop.format / 8 - 1) {
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strcat(cmd, "\" \"");
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}
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} else if (c == '\r') {
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// Nothing to do
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} else {
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if (c == '`' || c == '$' || c == '\\') {
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strcat(cmd, "\\");
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}
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char sc[2];
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sc[0] = c;
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sc[1] = '\0';
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strcat(cmd, sc);
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}
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}
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strcat(cmd, "\"");
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strcat(cmd, "&)");
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if (dnd_debug)
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fprintf(stderr, "tint2: DnD %s:%d: Running command: %s\n", __FILE__, __LINE__, cmd);
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tint_exec(cmd, NULL, NULL, e->time, NULL, 0, 0);
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free(cmd);
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// Reply OK.
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XClientMessageEvent m;
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memset(&m, 0, sizeof(m));
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m.type = ClientMessage;
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m.display = server.display;
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m.window = dnd_source_window;
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m.message_type = server.atom.XdndFinished;
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m.format = 32;
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m.data.l[0] = dnd_target_window;
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m.data.l[1] = 1;
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m.data.l[2] = server.atom.XdndActionCopy; // We only ever copy.
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XSendEvent(server.display, dnd_source_window, False, NoEventMask, (XEvent *)&m);
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XSync(server.display, False);
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}
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XFree(prop.data);
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}
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}
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