swayfx/sway/tree/arrange.c
2018-06-01 23:14:58 +10:00

265 lines
7.9 KiB
C

#define _POSIX_C_SOURCE 200809L
#include <ctype.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_output_layout.h>
#include "sway/debug.h"
#include "sway/tree/arrange.h"
#include "sway/tree/container.h"
#include "sway/tree/layout.h"
#include "sway/output.h"
#include "sway/tree/workspace.h"
#include "sway/tree/view.h"
#include "list.h"
#include "log.h"
struct sway_container root_container;
void arrange_root() {
if (config->reloading) {
return;
}
struct wlr_output_layout *output_layout =
root_container.sway_root->output_layout;
const struct wlr_box *layout_box =
wlr_output_layout_get_box(output_layout, NULL);
root_container.x = layout_box->x;
root_container.y = layout_box->y;
root_container.width = layout_box->width;
root_container.height = layout_box->height;
for (int i = 0; i < root_container.children->length; ++i) {
struct sway_container *output = root_container.children->items[i];
arrange_output(output);
}
}
void arrange_output(struct sway_container *output) {
if (config->reloading) {
return;
}
if (!sway_assert(output->type == C_OUTPUT,
"called arrange_output() on non-output container")) {
return;
}
const struct wlr_box *output_box = wlr_output_layout_get_box(
root_container.sway_root->output_layout,
output->sway_output->wlr_output);
output->x = output_box->x;
output->y = output_box->y;
output->width = output_box->width;
output->height = output_box->height;
wlr_log(L_DEBUG, "Arranging output '%s' at %f,%f",
output->name, output->x, output->y);
for (int i = 0; i < output->children->length; ++i) {
struct sway_container *workspace = output->children->items[i];
arrange_workspace(workspace);
}
container_damage_whole(output);
}
void arrange_workspace(struct sway_container *workspace) {
if (config->reloading) {
return;
}
if (!sway_assert(workspace->type == C_WORKSPACE,
"called arrange_workspace() on non-workspace container")) {
return;
}
struct sway_container *output = workspace->parent;
struct wlr_box *area = &output->sway_output->usable_area;
wlr_log(L_DEBUG, "Usable area for ws: %dx%d@%d,%d",
area->width, area->height, area->x, area->y);
workspace->width = area->width;
workspace->height = area->height;
workspace->x = output->x + area->x;
workspace->y = output->y + area->y;
wlr_log(L_DEBUG, "Arranging workspace '%s' at %f, %f",
workspace->name, workspace->x, workspace->y);
arrange_children_of(workspace);
container_damage_whole(workspace);
}
static void apply_horiz_layout(struct sway_container *parent) {
size_t num_children = parent->children->length;
if (!num_children) {
return;
}
size_t parent_offset = 0;
if (parent->parent->layout == L_TABBED) {
parent_offset = container_titlebar_height();
} else if (parent->parent->layout == L_STACKED) {
parent_offset =
container_titlebar_height() * parent->parent->children->length;
}
size_t parent_height = parent->height - parent_offset;
// Calculate total width of children
double total_width = 0;
for (size_t i = 0; i < num_children; ++i) {
struct sway_container *child = parent->children->items[i];
if (child->width <= 0) {
if (num_children > 1) {
child->width = parent->width / (num_children - 1);
} else {
child->width = parent->width;
}
}
total_width += child->width;
}
double scale = parent->width / total_width;
// Resize windows
wlr_log(L_DEBUG, "Arranging %p horizontally", parent);
double child_x = parent->x;
struct sway_container *child;
for (size_t i = 0; i < num_children; ++i) {
child = parent->children->items[i];
wlr_log(L_DEBUG,
"Calculating arrangement for %p:%d (will scale %f by %f)",
child, child->type, child->width, scale);
child->x = child_x;
child->y = parent->y + parent_offset;
child->width = floor(child->width * scale);
child->height = parent_height;
child_x += child->width;
}
// Make last child use remaining width of parent
child->width = parent->x + parent->width - child->x;
}
static void apply_vert_layout(struct sway_container *parent) {
size_t num_children = parent->children->length;
if (!num_children) {
return;
}
size_t parent_offset = 0;
if (parent->parent->layout == L_TABBED) {
parent_offset = container_titlebar_height();
} else if (parent->parent->layout == L_STACKED) {
parent_offset =
container_titlebar_height() * parent->parent->children->length;
}
size_t parent_height = parent->height - parent_offset;
// Calculate total height of children
double total_height = 0;
for (size_t i = 0; i < num_children; ++i) {
struct sway_container *child = parent->children->items[i];
if (child->height <= 0) {
if (num_children > 1) {
child->height = parent_height / (num_children - 1);
} else {
child->height = parent_height;
}
}
total_height += child->height;
}
double scale = parent_height / total_height;
// Resize
wlr_log(L_DEBUG, "Arranging %p vertically", parent);
double child_y = parent->y + parent_offset;
struct sway_container *child;
for (size_t i = 0; i < num_children; ++i) {
child = parent->children->items[i];
wlr_log(L_DEBUG,
"Calculating arrangement for %p:%d (will scale %f by %f)",
child, child->type, child->height, scale);
child->x = parent->x;
child->y = child_y;
child->width = parent->width;
child->height = floor(child->height * scale);
child_y += child->height;
}
// Make last child use remaining height of parent
child->height = parent->y + parent_offset + parent_height - child->y;
}
static void apply_tabbed_or_stacked_layout(struct sway_container *parent) {
if (!parent->children->length) {
return;
}
size_t parent_offset = 0;
if (parent->parent->layout == L_TABBED) {
parent_offset = container_titlebar_height();
} else if (parent->parent->layout == L_STACKED) {
parent_offset =
container_titlebar_height() * parent->parent->children->length;
}
size_t parent_height = parent->height - parent_offset;
for (int i = 0; i < parent->children->length; ++i) {
struct sway_container *child = parent->children->items[i];
child->x = parent->x;
child->y = parent->y + parent_offset;
child->width = parent->width;
child->height = parent_height;
}
}
void arrange_children_of(struct sway_container *parent) {
if (config->reloading) {
return;
}
if (!sway_assert(parent->type == C_WORKSPACE || parent->type == C_CONTAINER,
"container is a %s", container_type_to_str(parent->type))) {
return;
}
struct sway_container *workspace = parent;
if (workspace->type != C_WORKSPACE) {
workspace = container_parent(workspace, C_WORKSPACE);
}
if (workspace->sway_workspace->fullscreen) {
// Just arrange the fullscreen view and jump out
view_autoconfigure(workspace->sway_workspace->fullscreen);
return;
}
wlr_log(L_DEBUG, "Arranging layout for %p %s %fx%f+%f,%f", parent,
parent->name, parent->width, parent->height, parent->x, parent->y);
// Calculate x, y, width and height of children
switch (parent->layout) {
case L_HORIZ:
apply_horiz_layout(parent);
break;
case L_VERT:
apply_vert_layout(parent);
break;
case L_TABBED:
case L_STACKED:
apply_tabbed_or_stacked_layout(parent);
break;
default:
wlr_log(L_DEBUG, "TODO: arrange layout type %d", parent->layout);
apply_horiz_layout(parent);
break;
}
// Apply x, y, width and height to children and recurse if needed
for (int i = 0; i < parent->children->length; ++i) {
struct sway_container *child = parent->children->items[i];
if (child->type == C_VIEW) {
view_autoconfigure(child->sway_view);
} else {
arrange_children_of(child);
}
}
// If container is a workspace, process floating containers too
if (parent->type == C_WORKSPACE) {
struct sway_workspace *ws = workspace->sway_workspace;
for (int i = 0; i < ws->floating->children->length; ++i) {
struct sway_container *child = ws->floating->children->items[i];
if (child->type != C_VIEW) {
arrange_children_of(child);
}
}
}
container_damage_whole(parent);
update_debug_tree();
}