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|
#include <stdlib.h>
#include <stdbool.h>
#include <math.h>
#include <wlc/wlc.h>
#include "extensions.h"
#include "layout.h"
#include "log.h"
#include "list.h"
#include "config.h"
#include "container.h"
#include "workspace.h"
#include "focus.h"
#include "output.h"
#include "ipc-server.h"
#include "render.h"
swayc_t root_container;
list_t *scratchpad;
int min_sane_h = 60;
int min_sane_w = 100;
void init_layout(void) {
root_container.type = C_ROOT;
root_container.layout = L_NONE;
root_container.children = create_list();
root_container.handle = -1;
root_container.visible = true;
scratchpad = create_list();
}
int index_child(const swayc_t *child) {
swayc_t *parent = child->parent;
int i, len;
if (!child->is_floating) {
len = parent->children->length;
for (i = 0; i < len; ++i) {
if (parent->children->items[i] == child) {
break;
}
}
} else {
len = parent->floating->length;
for (i = 0; i < len; ++i) {
if (parent->floating->items[i] == child) {
break;
}
}
}
if (!sway_assert(i < len, "Stray container")) {
return -1;
}
return i;
}
void add_child(swayc_t *parent, swayc_t *child) {
sway_log(L_DEBUG, "Adding %p (%d, %fx%f) to %p (%d, %fx%f)", child, child->type,
child->width, child->height, parent, parent->type, parent->width, parent->height);
list_add(parent->children, child);
child->parent = parent;
// set focus for this container
if (!parent->focused) {
parent->focused = child;
}
}
void insert_child(swayc_t *parent, swayc_t *child, int index) {
if (index > parent->children->length) {
index = parent->children->length;
}
if (index < 0) {
index = 0;
}
list_insert(parent->children, index, child);
child->parent = parent;
if (!parent->focused) {
parent->focused = child;
}
}
void add_floating(swayc_t *ws, swayc_t *child) {
sway_log(L_DEBUG, "Adding %p (%d, %fx%f) to %p (%d, %fx%f)", child, child->type,
child->width, child->height, ws, ws->type, ws->width, ws->height);
if (!sway_assert(ws->type == C_WORKSPACE, "Must be of workspace type")) {
return;
}
list_add(ws->floating, child);
child->parent = ws;
child->is_floating = true;
if (!ws->focused) {
ws->focused = child;
}
}
swayc_t *add_sibling(swayc_t *fixed, swayc_t *active) {
swayc_t *parent = fixed->parent;
int i = index_child(fixed);
if (fixed->is_floating) {
list_insert(parent->floating, i + 1, active);
} else {
list_insert(parent->children, i + 1, active);
}
active->parent = parent;
// focus new child
parent->focused = active;
return active->parent;
}
swayc_t *replace_child(swayc_t *child, swayc_t *new_child) {
swayc_t *parent = child->parent;
if (parent == NULL) {
return NULL;
}
int i = index_child(child);
if (child->is_floating) {
parent->floating->items[i] = new_child;
} else {
parent->children->items[i] = new_child;
}
// Set parent and focus for new_child
new_child->parent = child->parent;
if (child->parent->focused == child) {
child->parent->focused = new_child;
}
child->parent = NULL;
// Set geometry for new child
new_child->x = child->x;
new_child->y = child->y;
new_child->width = child->width;
new_child->height = child->height;
// reset geometry for child
child->width = 0;
child->height = 0;
// deactivate child
if (child->type == C_VIEW) {
wlc_view_set_state(child->handle, WLC_BIT_ACTIVATED, false);
}
return parent;
}
swayc_t *remove_child(swayc_t *child) {
int i;
swayc_t *parent = child->parent;
if (child->is_floating) {
// Special case for floating views
for (i = 0; i < parent->floating->length; ++i) {
if (parent->floating->items[i] == child) {
list_del(parent->floating, i);
break;
}
}
i = 0;
} else {
for (i = 0; i < parent->children->length; ++i) {
if (parent->children->items[i] == child) {
list_del(parent->children, i);
break;
}
}
}
// Set focused to new container
if (parent->focused == child) {
if (parent->children->length > 0) {
parent->focused = parent->children->items[i ? i-1:0];
} else if (parent->floating && parent->floating->length) {
parent->focused = parent->floating->items[parent->floating->length - 1];
} else {
parent->focused = NULL;
}
}
child->parent = NULL;
// deactivate view
if (child->type == C_VIEW) {
wlc_view_set_state(child->handle, WLC_BIT_ACTIVATED, false);
}
return parent;
}
void swap_container(swayc_t *a, swayc_t *b) {
if (!sway_assert(a&&b, "parameters must be non null") ||
!sway_assert(a->parent && b->parent, "containers must have parents")) {
return;
}
size_t a_index = index_child(a);
size_t b_index = index_child(b);
swayc_t *a_parent = a->parent;
swayc_t *b_parent = b->parent;
// Swap the pointers
if (a->is_floating) {
a_parent->floating->items[a_index] = b;
} else {
a_parent->children->items[a_index] = b;
}
if (b->is_floating) {
b_parent->floating->items[b_index] = a;
} else {
b_parent->children->items[b_index] = a;
}
a->parent = b_parent;
b->parent = a_parent;
if (a_parent->focused == a) {
a_parent->focused = b;
}
// dont want to double switch
if (b_parent->focused == b && a_parent != b_parent) {
b_parent->focused = a;
}
}
void swap_geometry(swayc_t *a, swayc_t *b) {
double x = a->x;
double y = a->y;
double w = a->width;
double h = a->height;
a->x = b->x;
a->y = b->y;
a->width = b->width;
a->height = b->height;
b->x = x;
b->y = y;
b->width = w;
b->height = h;
}
void move_container(swayc_t *container, enum movement_direction dir) {
enum swayc_layouts layout;
if (container->is_floating
|| (container->type != C_VIEW && container->type != C_CONTAINER)) {
return;
}
if (dir == MOVE_UP || dir == MOVE_DOWN) {
layout = L_VERT;
} else if (dir == MOVE_LEFT || dir == MOVE_RIGHT) {
layout = L_HORIZ;
} else {
return;
}
swayc_t *parent = container->parent;
swayc_t *child = container;
bool ascended = false;
while (true) {
sway_log(L_DEBUG, "container:%p, parent:%p, child %p,",
container,parent,child);
if (parent->layout == layout) {
int diff;
// If it has ascended (parent has moved up), no container is removed
// so insert it at index, or index+1.
// if it has not, the moved container is removed, so it needs to be
// inserted at index-1, or index+1
if (ascended) {
diff = dir == MOVE_LEFT || dir == MOVE_UP ? 0 : 1;
} else {
diff = dir == MOVE_LEFT || dir == MOVE_UP ? -1 : 1;
}
int desired = index_child(child) + diff;
// when it has ascended, legal insertion position is 0:len
// when it has not, legal insertion position is 0:len-1
if (desired >= 0 && desired - ascended < parent->children->length) {
if (!ascended) {
child = parent->children->items[desired];
// Move container into sibling container
if (child->type == C_CONTAINER) {
parent = child;
// Insert it in first/last if matching layout,otherwise
// inesrt it next to focused container
if (parent->layout == layout) {
desired = (diff < 0) * parent->children->length;
} else {
desired = index_child(child->focused);
}
//reset geometry
container->width = container->height = 0;
}
}
swayc_t *old_parent = remove_child(container);
insert_child(parent, container, desired);
destroy_container(old_parent);
sway_log(L_DEBUG,"Moving to %p %d",parent, desired);
break;
}
}
// Change parent layout if we need to
if (parent->children->length == 1 && parent->layout != layout) {
parent->layout = layout;
continue;
}
if (parent->type == C_WORKSPACE) {
// We simply cannot move any further.
if (parent->layout == layout) {
break;
}
// Create container around workspace to insert child into
parent = new_container(parent, layout);
}
ascended = true;
child = parent;
parent = child->parent;
}
// Dirty hack to fix a certain case
arrange_windows(parent, -1, -1);
arrange_windows(parent->parent, -1, -1);
set_focused_container_for(parent->parent, container);
}
void move_container_to(swayc_t* container, swayc_t* destination) {
if (container == destination || swayc_is_parent_of(container, destination)) {
return;
}
swayc_t *parent = remove_child(container);
// Send to new destination
if (container->is_floating) {
swayc_t *ws = swayc_active_workspace_for(destination);
add_floating(ws, container);
// If the workspace only has one child after adding one, it
// means that the workspace was just initialized.
if (ws->children->length + ws->floating->length == 1) {
ipc_event_workspace(NULL, ws, "init");
}
} else if (destination->type == C_WORKSPACE) {
// reset container geometry
container->width = container->height = 0;
add_child(destination, container);
// If the workspace only has one child after adding one, it
// means that the workspace was just initialized.
if (destination->children->length + destination->floating->length == 1) {
ipc_event_workspace(NULL, destination, "init");
}
} else {
// reset container geometry
container->width = container->height = 0;
add_sibling(destination, container);
}
// Destroy old container if we need to
parent = destroy_container(parent);
// Refocus
swayc_t *op1 = swayc_parent_by_type(destination, C_OUTPUT);
swayc_t *op2 = swayc_parent_by_type(parent, C_OUTPUT);
set_focused_container(get_focused_view(op1));
arrange_windows(op1, -1, -1);
update_visibility(op1);
if (op1 != op2) {
set_focused_container(get_focused_view(op2));
arrange_windows(op2, -1, -1);
update_visibility(op2);
}
}
void move_workspace_to(swayc_t* workspace, swayc_t* destination) {
if (workspace == destination || swayc_is_parent_of(workspace, destination)) {
return;
}
swayc_t *src_op = remove_child(workspace);
// reset container geometry
workspace->width = workspace->height = 0;
add_child(destination, workspace);
// Refocus destination (change to new workspace)
set_focused_container(get_focused_view(workspace));
arrange_windows(destination, -1, -1);
update_visibility(destination);
// make sure source output has a workspace
if (src_op->children->length == 0) {
char *ws_name = workspace_next_name(src_op->name);
swayc_t *ws = new_workspace(src_op, ws_name);
ws->is_focused = true;
free(ws_name);
}
set_focused_container(get_focused_view(src_op));
update_visibility(src_op);
}
void update_geometry(swayc_t *container) {
if (container->type != C_VIEW) {
return;
}
swayc_t *ws = swayc_parent_by_type(container, C_WORKSPACE);
swayc_t *op = ws->parent;
int gap = container->is_floating ? 0 : swayc_gap(container);
if (gap % 2 != 0) {
// because gaps are implemented as "half sized margins" it's currently
// not possible to align views properly with odd sized gaps.
gap -= 1;
}
struct wlc_geometry geometry = {
.origin = {
.x = container->x + gap/2 < op->width ? container->x + gap/2 : op->width-1,
.y = container->y + gap/2 < op->height ? container->y + gap/2 : op->height-1
},
.size = {
.w = container->width > gap ? container->width - gap : 1,
.h = container->height > gap ? container->height - gap : 1,
}
};
if (swayc_is_fullscreen(container)) {
swayc_t *output = swayc_parent_by_type(container, C_OUTPUT);
const struct wlc_size *size = wlc_output_get_resolution(output->handle);
geometry.origin.x = 0;
geometry.origin.y = 0;
geometry.size.w = size->w;
geometry.size.h = size->h;
if (op->focused == ws) {
wlc_view_bring_to_front(container->handle);
}
} else if ((!config->edge_gaps && gap > 0) || (config->smart_gaps && ws->children->length == 1)) {
// Remove gap against the workspace edges. Because a pixel is not
// divisable, depending on gap size and the number of siblings our view
// might be at the workspace edge without being exactly so (thus test
// with gap, and align correctly).
if (container->x - gap <= ws->x) {
geometry.origin.x = ws->x;
geometry.size.w = container->width - gap/2;
}
if (container->y - gap <= ws->y) {
geometry.origin.y = ws->y;
geometry.size.h = container->height - gap/2;
}
if (container->x + container->width + gap >= ws->x + ws->width) {
geometry.size.w = ws->x + ws->width - geometry.origin.x;
}
if (container->y + container->height + gap >= ws->y + ws->height) {
geometry.size.h = ws->y + ws->height - geometry.origin.y;
}
}
wlc_view_set_geometry(container->handle, 0, &geometry);
}
static void arrange_windows_r(swayc_t *container, double width, double height) {
int i;
if (width == -1 || height == -1) {
swayc_log(L_DEBUG, container, "Arranging layout for %p", container);
width = container->width;
height = container->height;
}
// pixels are indivisable. if we don't round the pixels, then the view
// calculations will be off (e.g. 50.5 + 50.5 = 101, but in reality it's
// 50 + 50 = 100). doing it here cascades properly to all width/height/x/y.
width = floor(width);
height = floor(height);
sway_log(L_DEBUG, "Arranging layout for %p %s %fx%f+%f,%f", container,
container->name, container->width, container->height, container->x, container->y);
double x = 0, y = 0;
switch (container->type) {
case C_ROOT:
for (i = 0; i < container->children->length; ++i) {
swayc_t *output = container->children->items[i];
sway_log(L_DEBUG, "Arranging output '%s' at %f,%f", output->name, output->x, output->y);
arrange_windows_r(output, -1, -1);
}
return;
case C_OUTPUT:
{
struct wlc_size resolution = *wlc_output_get_resolution(container->handle);
width = resolution.w; height = resolution.h;
// output must have correct size due to e.g. seamless mouse,
// but a workspace might be smaller depending on panels.
container->width = width;
container->height = height;
}
// arrange all workspaces:
for (i = 0; i < container->children->length; ++i) {
swayc_t *child = container->children->items[i];
arrange_windows_r(child, -1, -1);
}
// Bring all unmanaged views to the front
for (i = 0; i < container->unmanaged->length; ++i) {
wlc_handle *handle = container->unmanaged->items[i];
wlc_view_bring_to_front(*handle);
}
return;
case C_WORKSPACE:
{
swayc_t *output = swayc_parent_by_type(container, C_OUTPUT);
width = output->width, height = output->height;
for (i = 0; i < desktop_shell.panels->length; ++i) {
struct panel_config *config = desktop_shell.panels->items[i];
if (config->output == output->handle) {
struct wlc_size size = *wlc_surface_get_size(config->surface);
sway_log(L_DEBUG, "-> Found panel for this workspace: %ux%u, position: %u", size.w, size.h, config->panel_position);
switch (config->panel_position) {
case DESKTOP_SHELL_PANEL_POSITION_TOP:
y += size.h; height -= size.h;
break;
case DESKTOP_SHELL_PANEL_POSITION_BOTTOM:
height -= size.h;
break;
case DESKTOP_SHELL_PANEL_POSITION_LEFT:
x += size.w; width -= size.w;
break;
case DESKTOP_SHELL_PANEL_POSITION_RIGHT:
width -= size.w;
break;
}
}
}
int gap = swayc_gap(container);
x = container->x = x + gap;
y = container->y = y + gap;
width = container->width = width - gap * 2;
height = container->height = height - gap * 2;
sway_log(L_DEBUG, "Arranging workspace '%s' at %f, %f", container->name, container->x, container->y);
}
// children are properly handled below
break;
case C_VIEW:
{
container->width = width;
container->height = height;
update_geometry(container);
sway_log(L_DEBUG, "Set view to %.f x %.f @ %.f, %.f", container->width,
container->height, container->x, container->y);
}
return;
default:
container->width = width;
container->height = height;
x = container->x;
y = container->y;
break;
}
double scale = 0;
switch (container->layout) {
case L_HORIZ:
default:
// Calculate total width
for (i = 0; i < container->children->length; ++i) {
double *old_width = &((swayc_t *)container->children->items[i])->width;
if (*old_width <= 0) {
if (container->children->length > 1) {
*old_width = width / (container->children->length - 1);
} else {
*old_width = width;
}
}
scale += *old_width;
}
// Resize windows
if (scale > 0.1) {
scale = width / scale;
sway_log(L_DEBUG, "Arranging %p horizontally", container);
for (i = 0; i < container->children->length; ++i) {
swayc_t *child = container->children->items[i];
sway_log(L_DEBUG, "Calculating arrangement for %p:%d (will scale %f by %f)", child, child->type, width, scale);
child->x = x;
child->y = y;
if (i == container->children->length - 1) {
double remaining_width = container->x + width - x;
arrange_windows_r(child, remaining_width, height);
} else {
arrange_windows_r(child, child->width * scale, height);
}
x += child->width;
}
}
break;
case L_VERT:
// Calculate total height
for (i = 0; i < container->children->length; ++i) {
double *old_height = &((swayc_t *)container->children->items[i])->height;
if (*old_height <= 0) {
if (container->children->length > 1) {
*old_height = height / (container->children->length - 1);
} else {
*old_height = height;
}
}
scale += *old_height;
}
// Resize
if (scale > 0.1) {
scale = height / scale;
sway_log(L_DEBUG, "Arranging %p vertically", container);
for (i = 0; i < container->children->length; ++i) {
swayc_t *child = container->children->items[i];
sway_log(L_DEBUG, "Calculating arrangement for %p:%d (will scale %f by %f)", child, child->type, height, scale);
child->x = x;
child->y = y;
if (i == container->children->length - 1) {
double remaining_height = container->y + height - y;
arrange_windows_r(child, width, remaining_height);
} else {
arrange_windows_r(child, width, child->height * scale);
}
y += child->height;
}
}
break;
}
// Arrage floating layouts for workspaces last
if (container->type == C_WORKSPACE) {
for (i = 0; i < container->floating->length; ++i) {
swayc_t *view = container->floating->items[i];
if (view->type == C_VIEW) {
update_geometry(view);
if (swayc_is_fullscreen(view)) {
wlc_view_bring_to_front(view->handle);
} else if (!container->focused
|| !swayc_is_fullscreen(container->focused)) {
wlc_view_bring_to_front(view->handle);
}
}
}
}
}
void arrange_windows(swayc_t *container, double width, double height) {
update_visibility(container);
arrange_windows_r(container, width, height);
layout_log(&root_container, 0);
}
/**
* Get swayc in the direction of newly entered output.
*/
static swayc_t *get_swayc_in_output_direction(swayc_t *output, enum movement_direction dir) {
if (!output) {
return NULL;
}
swayc_t *ws = swayc_focus_by_type(output, C_WORKSPACE);
if (ws && ws->children->length > 0) {
switch (dir) {
case MOVE_LEFT:
// get most right child of new output
return ws->children->items[ws->children->length-1];
case MOVE_RIGHT:
// get most left child of new output
return ws->children->items[0];
case MOVE_UP:
case MOVE_DOWN:
{
swayc_t *focused_view = swayc_focus_by_type(ws, C_VIEW);
if (focused_view && focused_view->parent) {
swayc_t *parent = focused_view->parent;
if (parent->layout == L_VERT) {
if (dir == MOVE_UP) {
// get child furthest down on new output
return parent->children->items[parent->children->length-1];
} else if (dir == MOVE_DOWN) {
// get child furthest up on new output
return parent->children->items[0];
}
}
return focused_view;
}
break;
}
default:
break;
}
}
return output;
}
swayc_t *get_swayc_in_direction_under(swayc_t *container, enum movement_direction dir, swayc_t *limit) {
swayc_t *parent = container->parent;
if (dir == MOVE_PARENT) {
if (parent->type == C_OUTPUT) {
return NULL;
} else {
return parent;
}
}
// If moving to an adjacent output we need a starting position (since this
// output might border to multiple outputs).
struct wlc_point abs_pos;
get_absolute_center_position(container, &abs_pos);
if (container->type == C_VIEW && swayc_is_fullscreen(container)) {
sway_log(L_DEBUG, "Moving from fullscreen view, skipping to output");
container = swayc_parent_by_type(container, C_OUTPUT);
get_absolute_center_position(container, &abs_pos);
swayc_t *output = swayc_adjacent_output(container, dir, &abs_pos, true);
return get_swayc_in_output_direction(output, dir);
}
if (container->type == C_WORKSPACE && container->fullscreen) {
sway_log(L_DEBUG, "Moving to fullscreen view");
return container->fullscreen;
}
while (true) {
// Test if we can even make a difference here
bool can_move = false;
int diff = 0;
if (parent->type == C_ROOT) {
sway_log(L_DEBUG, "Moving between outputs");
swayc_t *output = swayc_adjacent_output(container, dir, &abs_pos, true);
return get_swayc_in_output_direction(output, dir);
} else {
if (dir == MOVE_LEFT || dir == MOVE_RIGHT) {
if (parent->layout == L_HORIZ) {
can_move = true;
diff = dir == MOVE_LEFT ? -1 : 1;
}
} else {
if (parent->layout == L_VERT) {
can_move = true;
diff = dir == MOVE_UP ? -1 : 1;
}
}
}
if (can_move) {
int desired = index_child(container) + diff;
if (container->is_floating || desired < 0 || desired >= parent->children->length) {
can_move = false;
} else {
return parent->children->items[desired];
}
}
if (!can_move) {
container = parent;
parent = parent->parent;
if (!parent || container == limit) {
// Nothing we can do
return NULL;
}
}
}
}
swayc_t *get_swayc_in_direction(swayc_t *container, enum movement_direction dir) {
return get_swayc_in_direction_under(container, dir, NULL);
}
void recursive_resize(swayc_t *container, double amount, enum wlc_resize_edge edge) {
int i;
bool layout_match = true;
sway_log(L_DEBUG, "Resizing %p with amount: %f", container, amount);
if (edge == WLC_RESIZE_EDGE_LEFT || edge == WLC_RESIZE_EDGE_RIGHT) {
container->width += amount;
layout_match = container->layout == L_HORIZ;
} else if (edge == WLC_RESIZE_EDGE_TOP || edge == WLC_RESIZE_EDGE_BOTTOM) {
container->height += amount;
layout_match = container->layout == L_VERT;
}
if (container->type == C_VIEW) {
update_geometry(container);
return;
}
if (layout_match) {
for (i = 0; i < container->children->length; i++) {
recursive_resize(container->children->items[i], amount/container->children->length, edge);
}
} else {
for (i = 0; i < container->children->length; i++) {
recursive_resize(container->children->items[i], amount, edge);
}
}
}
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