201 lines
6.7 KiB
C
201 lines
6.7 KiB
C
#undef I3__FILE__
|
||
#define I3__FILE__ "resize.c"
|
||
/*
|
||
* vim:ts=4:sw=4:expandtab
|
||
*
|
||
* i3 - an improved dynamic tiling window manager
|
||
* © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
|
||
*
|
||
* resize.c: Interactive resizing.
|
||
*
|
||
*/
|
||
#include "all.h"
|
||
|
||
extern xcb_connection_t *conn;
|
||
|
||
/*
|
||
* This is an ugly data structure which we need because there is no standard
|
||
* way of having nested functions (only available as a gcc extension at the
|
||
* moment, clang doesn’t support it) or blocks (only available as a clang
|
||
* extension and only on Mac OS X systems at the moment).
|
||
*
|
||
*/
|
||
struct callback_params {
|
||
orientation_t orientation;
|
||
Con *output;
|
||
xcb_window_t helpwin;
|
||
uint32_t *new_position;
|
||
};
|
||
|
||
DRAGGING_CB(resize_callback) {
|
||
const struct callback_params *params = extra;
|
||
Con *output = params->output;
|
||
DLOG("new x = %d, y = %d\n", new_x, new_y);
|
||
if (params->orientation == HORIZ) {
|
||
/* Check if the new coordinates are within screen boundaries */
|
||
if (new_x > (output->rect.x + output->rect.width - 25) ||
|
||
new_x < (output->rect.x + 25))
|
||
return;
|
||
|
||
*(params->new_position) = new_x;
|
||
xcb_configure_window(conn, params->helpwin, XCB_CONFIG_WINDOW_X, params->new_position);
|
||
} else {
|
||
if (new_y > (output->rect.y + output->rect.height - 25) ||
|
||
new_y < (output->rect.y + 25))
|
||
return;
|
||
|
||
*(params->new_position) = new_y;
|
||
xcb_configure_window(conn, params->helpwin, XCB_CONFIG_WINDOW_Y, params->new_position);
|
||
}
|
||
|
||
xcb_flush(conn);
|
||
}
|
||
|
||
bool resize_find_tiling_participants(Con **current, Con **other, direction_t direction) {
|
||
DLOG("Find two participants for resizing container=%p in direction=%i\n", other, direction);
|
||
Con *first = *current;
|
||
Con *second = NULL;
|
||
if (first == NULL) {
|
||
DLOG("Current container is NULL, aborting.\n");
|
||
return false;
|
||
}
|
||
|
||
/* Go up in the tree and search for a container to resize */
|
||
const orientation_t search_orientation = ((direction == D_LEFT || direction == D_RIGHT) ? HORIZ : VERT);
|
||
const bool dir_backwards = (direction == D_UP || direction == D_LEFT);
|
||
while (first->type != CT_WORKSPACE &&
|
||
first->type != CT_FLOATING_CON &&
|
||
second == NULL) {
|
||
/* get the appropriate first container with the matching
|
||
* orientation (skip stacked/tabbed cons) */
|
||
if ((con_orientation(first->parent) != search_orientation) ||
|
||
(first->parent->layout == L_STACKED) ||
|
||
(first->parent->layout == L_TABBED)) {
|
||
first = first->parent;
|
||
continue;
|
||
}
|
||
|
||
/* get the counterpart for this resizement */
|
||
if (dir_backwards) {
|
||
second = TAILQ_PREV(first, nodes_head, nodes);
|
||
} else {
|
||
second = TAILQ_NEXT(first, nodes);
|
||
}
|
||
|
||
if (second == NULL) {
|
||
DLOG("No second container in this direction found, trying to look further up in the tree...\n");
|
||
first = first->parent;
|
||
}
|
||
}
|
||
|
||
DLOG("Found participants: first=%p and second=%p.", first, second);
|
||
*current = first;
|
||
*other = second;
|
||
if (first == NULL || second == NULL) {
|
||
DLOG("Could not find two participants for this resize request.\n");
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
int resize_graphical_handler(Con *first, Con *second, orientation_t orientation, const xcb_button_press_event_t *event) {
|
||
DLOG("resize handler\n");
|
||
|
||
uint32_t new_position;
|
||
|
||
/* TODO: previously, we were getting a rect containing all screens. why? */
|
||
Con *output = con_get_output(first);
|
||
DLOG("x = %d, width = %d\n", output->rect.x, output->rect.width);
|
||
|
||
x_mask_event_mask(~XCB_EVENT_MASK_ENTER_WINDOW);
|
||
xcb_flush(conn);
|
||
|
||
uint32_t mask = 0;
|
||
uint32_t values[2];
|
||
|
||
mask = XCB_CW_OVERRIDE_REDIRECT;
|
||
values[0] = 1;
|
||
|
||
/* Open a new window, the resizebar. Grab the pointer and move the window around
|
||
as the user moves the pointer. */
|
||
xcb_window_t grabwin = create_window(conn, output->rect, XCB_COPY_FROM_PARENT, XCB_COPY_FROM_PARENT,
|
||
XCB_WINDOW_CLASS_INPUT_ONLY, XCURSOR_CURSOR_POINTER, true, mask, values);
|
||
|
||
Rect helprect;
|
||
if (orientation == HORIZ) {
|
||
helprect.x = event->root_x;
|
||
helprect.y = output->rect.y;
|
||
helprect.width = 2;
|
||
helprect.height = output->rect.height;
|
||
new_position = event->root_x;
|
||
} else {
|
||
helprect.x = output->rect.x;
|
||
helprect.y = event->root_y;
|
||
helprect.width = output->rect.width;
|
||
helprect.height = 2;
|
||
new_position = event->root_y;
|
||
}
|
||
|
||
mask = XCB_CW_BACK_PIXEL;
|
||
values[0] = config.client.focused.border;
|
||
|
||
mask |= XCB_CW_OVERRIDE_REDIRECT;
|
||
values[1] = 1;
|
||
|
||
xcb_window_t helpwin = create_window(conn, helprect, XCB_COPY_FROM_PARENT, XCB_COPY_FROM_PARENT,
|
||
XCB_WINDOW_CLASS_INPUT_OUTPUT, (orientation == HORIZ ?
|
||
XCURSOR_CURSOR_RESIZE_HORIZONTAL :
|
||
XCURSOR_CURSOR_RESIZE_VERTICAL), true, mask, values);
|
||
|
||
xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin);
|
||
|
||
xcb_flush(conn);
|
||
|
||
const struct callback_params params = { orientation, output, helpwin, &new_position };
|
||
|
||
drag_result_t drag_result = drag_pointer(NULL, event, grabwin, BORDER_TOP, 0, resize_callback, ¶ms);
|
||
|
||
xcb_destroy_window(conn, helpwin);
|
||
xcb_destroy_window(conn, grabwin);
|
||
xcb_flush(conn);
|
||
|
||
/* User cancelled the drag so no action should be taken. */
|
||
if (drag_result == DRAG_REVERT)
|
||
return 0;
|
||
|
||
int pixels;
|
||
if (orientation == HORIZ)
|
||
pixels = (new_position - event->root_x);
|
||
else pixels = (new_position - event->root_y);
|
||
|
||
DLOG("Done, pixels = %d\n", pixels);
|
||
|
||
// if we got thus far, the containers must have
|
||
// percentages associated with them
|
||
assert(first->percent > 0.0);
|
||
assert(second->percent > 0.0);
|
||
|
||
// calculate the new percentage for the first container
|
||
double new_percent, difference;
|
||
double percent = first->percent;
|
||
DLOG("percent = %f\n", percent);
|
||
int original = (orientation == HORIZ ? first->rect.width : first->rect.height);
|
||
DLOG("original = %d\n", original);
|
||
new_percent = (original + pixels) * (percent / original);
|
||
difference = percent - new_percent;
|
||
DLOG("difference = %f\n", difference);
|
||
DLOG("new percent = %f\n", new_percent);
|
||
first->percent = new_percent;
|
||
|
||
// calculate the new percentage for the second container
|
||
double s_percent = second->percent;
|
||
second->percent = s_percent + difference;
|
||
DLOG("second->percent = %f\n", second->percent);
|
||
|
||
// now we must make sure that the sum of the percentages remain 1.0
|
||
con_fix_percent(first->parent);
|
||
|
||
return 0;
|
||
}
|