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/*
* \/\/\
*
* Copyright (C) 2012-2017 Vito Caputo - <vcaputo@pengaru.com>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3 as published
* by the Free Software Foundation.
*
* This program 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/>.
*/
/* input event handling stuff */
#include <X11/Xlib.h>
#include "clickety.h"
#include "desktop.h"
#include "vwm.h"
#include "window.h"
#include "xwindow.h"
/* simple little state machine for managing mouse click/drag/release sequences so we don't need another event loop */
typedef enum _vwm_adjust_mode_t {
VWM_ADJUST_RESIZE,
VWM_ADJUST_MOVE
} vwm_adjust_mode_t;
typedef struct _vwm_clickety_t {
vwm_window_t *vwin;
vwm_adjust_mode_t mode;
XWindowAttributes orig, lastrect;
int impetus_x, impetus_y, impetus_x_root, impetus_y_root;
} vwm_clickety_t;
static vwm_clickety_t clickety;
/* helper function for resizing the window, how the motion is applied depends on where in the window the impetus event occurred */
static void compute_resize(XEvent *terminus, XWindowAttributes *new)
{
vwm_window_t *vwin;
int dw = (clickety.orig.width / 2);
int dh = (clickety.orig.height / 2);
int xdelta = (terminus->xbutton.x_root - clickety.impetus_x_root);
int ydelta = (terminus->xbutton.y_root - clickety.impetus_y_root);
int min_width = 0, min_height = 0;
int width_inc = 1, height_inc = 1;
/* TODO: there's a problem here WRT border width, I should be considering it, I just haven't bothered to fix it since it doesn't seem to matter */
if ((vwin = clickety.vwin) && vwin->hints) {
if ((vwin->hints_supplied & PMinSize)) {
min_width = vwin->hints->min_width;
min_height = vwin->hints->min_height;
VWM_TRACE("window size hints exist and minimum sizes are w=%i h=%i", min_width, min_height);
}
if ((vwin->hints_supplied & PResizeInc)) {
width_inc = vwin->hints->width_inc;
height_inc = vwin->hints->height_inc;
VWM_TRACE("window size hints exist and resize increments are w=%i h=%i", width_inc, height_inc);
if (!width_inc)
width_inc = 1;
if (!height_inc)
height_inc = 1;
}
}
xdelta = xdelta / width_inc * width_inc;
ydelta = ydelta / height_inc * height_inc;
if (clickety.impetus_x < dw && clickety.impetus_y < dh) {
/* grabbed top left */
new->x = clickety.orig.x + xdelta;
new->y = clickety.orig.y + ydelta;
new->width = clickety.orig.width - xdelta;
new->height = clickety.orig.height - ydelta;
} else if (clickety.impetus_x > dw && clickety.impetus_y < dh) {
/* grabbed top right */
new->x = clickety.orig.x;
new->y = clickety.orig.y + ydelta;
new->width = clickety.orig.width + xdelta;
new->height = clickety.orig.height - ydelta;
} else if (clickety.impetus_x < dw && clickety.impetus_y > dh) {
/* grabbed bottom left */
new->x = clickety.orig.x + xdelta;
new->y = clickety.orig.y;
new->width = clickety.orig.width - xdelta;
new->height = clickety.orig.height + ydelta;
} else if (clickety.impetus_x > dw && clickety.impetus_y > dh) {
/* grabbed bottom right */
new->x = clickety.orig.x;
new->y = clickety.orig.y;
new->width = clickety.orig.width + xdelta;
new->height = clickety.orig.height + ydelta;
}
/* constrain the width and height of the window according to the minimums */
if (new->width < min_width) {
if (clickety.orig.x != new->x)
new->x -= (min_width - new->width);
new->width = min_width;
}
if (new->height < min_height) {
if (clickety.orig.y != new->y)
new->y -= (min_height - new->height);
new->height = min_height;
}
}
void vwm_clickety_motion(vwm_t *vwm, Window win, XMotionEvent *motion)
{
XWindowChanges changes = { .border_width = WINDOW_BORDER_WIDTH };
if (!clickety.vwin)
return;
/* TODO: verify win matches clickety.vwin? */
switch (clickety.mode) {
case VWM_ADJUST_MOVE:
changes.x = clickety.orig.x + (motion->x_root - clickety.impetus_x_root);
changes.y = clickety.orig.y + (motion->y_root - clickety.impetus_y_root);
XConfigureWindow(VWM_XDISPLAY(vwm), win, CWX | CWY | CWBorderWidth, &changes);
break;
case VWM_ADJUST_RESIZE: {
XWindowAttributes resized;
/* XXX: it just so happens the XMotionEvent structure is identical to XButtonEvent in the fields
* needed by compute_resize... */
compute_resize((XEvent *)motion, &resized);
/* TODO: this is probably broken with compositing active, but it doesn't seem to be too messed up in practice */
/* erase the last rectangle */
XDrawRectangle(VWM_XDISPLAY(vwm), VWM_XROOT(vwm), VWM_XGC(vwm), clickety.lastrect.x, clickety.lastrect.y, clickety.lastrect.width, clickety.lastrect.height);
/* draw a frame @ resized coordinates */
XDrawRectangle(VWM_XDISPLAY(vwm), VWM_XROOT(vwm), VWM_XGC(vwm), resized.x, resized.y, resized.width, resized.height);
/* remember the last rectangle */
clickety.lastrect = resized;
break;
}
default:
break;
}
}
void vwm_clickety_released(vwm_t *vwm, Window win, XButtonPressedEvent *terminus)
{
XWindowChanges changes = { .border_width = WINDOW_BORDER_WIDTH };
if (!clickety.vwin)
return;
switch (clickety.mode) {
case VWM_ADJUST_MOVE:
changes.x = clickety.orig.x + (terminus->x_root - clickety.impetus_x_root);
changes.y = clickety.orig.y + (terminus->y_root - clickety.impetus_y_root);
XConfigureWindow(VWM_XDISPLAY(vwm), win, CWX | CWY | CWBorderWidth, &changes);
break;
case VWM_ADJUST_RESIZE: {
XWindowAttributes resized;
compute_resize((XEvent *)terminus, &resized);
/* move and resize the window @ resized */
XDrawRectangle(VWM_XDISPLAY(vwm), VWM_XROOT(vwm), VWM_XGC(vwm), clickety.lastrect.x, clickety.lastrect.y, clickety.lastrect.width, clickety.lastrect.height);
changes.x = resized.x;
changes.y = resized.y;
changes.width = resized.width;
changes.height = resized.height;
XConfigureWindow(VWM_XDISPLAY(vwm), win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &changes);
XUngrabServer(VWM_XDISPLAY(vwm));
break;
}
default:
break;
}
/* once you manipulate the window it's no longer fullscreened, simply hitting Mod1+Return once will restore fullscreened mode */
clickety.vwin->autoconfigured = VWM_WIN_AUTOCONF_NONE;
clickety.vwin = NULL; /* reset clickety */
XFlush(VWM_XDISPLAY(vwm));
XUngrabPointer(VWM_XDISPLAY(vwm), CurrentTime);
}
/* on pointer buttonpress we initiate a clickety sequence; setup clickety with the window and impetus coordinates.. */
int vwm_clickety_pressed(vwm_t *vwm, Window win, XButtonPressedEvent *impetus)
{
vwm_window_t *vwin;
/* verify the window still exists */
if (!XGetWindowAttributes(VWM_XDISPLAY(vwm), win, &clickety.orig))
goto _fail;
if (!(vwin = vwm_win_lookup(vwm, win)))
goto _fail;
if (impetus->state & WM_GRAB_MODIFIER) {
/* always set the input focus to the clicked window, note if we allow this to happen on the root window, it enters sloppy focus mode
* until a non-root window is clicked, which is an interesting hybrid but not how I prefer it. */
if (vwin != vwm->focused_desktop->focused_window && vwin->xwindow->id != VWM_XROOT(vwm)) {
vwm_win_focus(vwm, vwin);
vwm_win_mru(vwm, vwin);
}
switch (impetus->button) {
case Button1:
/* immediately raise the window if we're relocating,
* resizes are supported without raising (which also enables NULL resizes to focus without raising) */
clickety.mode = VWM_ADJUST_MOVE;
XRaiseWindow(VWM_XDISPLAY(vwm), win);
break;
case Button3:
/* grab the server on resize for the xor rubber-banding's sake */
XGrabServer(VWM_XDISPLAY(vwm));
XSync(VWM_XDISPLAY(vwm), False);
/* FIXME: none of the resize DrawRectangle() calls consider the window border. */
XDrawRectangle(VWM_XDISPLAY(vwm), VWM_XROOT(vwm), VWM_XGC(vwm), clickety.orig.x, clickety.orig.y, clickety.orig.width, clickety.orig.height);
clickety.lastrect = clickety.orig;
clickety.mode = VWM_ADJUST_RESIZE;
break;
default:
goto _fail;
}
clickety.vwin = vwin;
clickety.impetus_x_root = impetus->x_root;
clickety.impetus_y_root = impetus->y_root;
clickety.impetus_x = impetus->x;
clickety.impetus_y = impetus->y;
}
return 1;
_fail:
XUngrabPointer(VWM_XDISPLAY(vwm), CurrentTime);
return 0;
}
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