325 lines
11 KiB
C
325 lines
11 KiB
C
#include <assert.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <wayland-server.h>
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#include <wlr/types/wlr_box.h>
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#include <wlr/types/wlr_surface.h>
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#include <wlr/types/wlr_layer_shell.h>
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#include <wlr/util/log.h>
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#include "rootston/desktop.h"
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#include "rootston/layers.h"
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#include "rootston/output.h"
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#include "rootston/server.h"
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static void apply_exclusive(struct wlr_box *usable_area,
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uint32_t anchor, int32_t exclusive,
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int32_t margin_top, int32_t margin_right,
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int32_t margin_bottom, int32_t margin_left) {
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if (exclusive <= 0) {
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return;
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}
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struct {
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uint32_t anchors;
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int *positive_axis;
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int *negative_axis;
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int margin;
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} edges[] = {
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{
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.anchors =
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ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT |
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ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT |
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ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP,
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.positive_axis = &usable_area->y,
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.negative_axis = &usable_area->height,
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.margin = margin_top,
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},
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{
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.anchors =
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ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT |
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ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT |
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ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM,
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.positive_axis = NULL,
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.negative_axis = &usable_area->height,
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.margin = margin_bottom,
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},
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{
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.anchors =
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ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT |
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ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP |
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ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM,
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.positive_axis = &usable_area->x,
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.negative_axis = &usable_area->width,
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.margin = margin_left,
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},
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{
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.anchors =
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ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT |
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ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP |
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ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM,
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.positive_axis = NULL,
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.negative_axis = &usable_area->width,
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.margin = margin_right,
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},
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};
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for (size_t i = 0; i < sizeof(edges) / sizeof(edges[0]); ++i) {
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if ((anchor & edges[i].anchors) == edges[i].anchors) {
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if (edges[i].positive_axis) {
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*edges[i].positive_axis += exclusive + edges[i].margin;
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}
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if (edges[i].negative_axis) {
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*edges[i].negative_axis -= exclusive + edges[i].margin;
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}
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}
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}
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}
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static void arrange_layer(struct wlr_output *output, struct wl_list *list,
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struct wlr_box *usable_area, bool exclusive) {
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struct roots_layer_surface *roots_surface;
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struct wlr_box full_area = { 0 };
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wlr_output_effective_resolution(output,
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&full_area.width, &full_area.height);
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wl_list_for_each(roots_surface, list, link) {
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struct wlr_layer_surface *layer = roots_surface->layer_surface;
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struct wlr_layer_surface_state *state = &layer->current;
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if (exclusive) {
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if (state->exclusive_zone <= 0) {
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continue;
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}
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} else {
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if (state->exclusive_zone > 0) {
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continue;
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}
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}
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struct wlr_box bounds;
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if (state->exclusive_zone == -1) {
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bounds = full_area;
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} else {
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bounds = *usable_area;
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}
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struct wlr_box box = {
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.width = state->desired_width,
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.height = state->desired_height
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};
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// Horizontal axis
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const uint32_t both_horiz = ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT
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| ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
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if ((state->anchor & both_horiz) && box.width == 0) {
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box.x = bounds.x;
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box.width = bounds.width;
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} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT)) {
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box.x = bounds.x;
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} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT)) {
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box.x = bounds.x + (bounds.width - box.width);
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} else {
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box.x = bounds.x + ((bounds.width / 2) - (box.width / 2));
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}
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// Vertical axis
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const uint32_t both_vert = ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP
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| ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
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if ((state->anchor & both_vert) && box.height == 0) {
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box.y = bounds.y;
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box.height = bounds.height;
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} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP)) {
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box.y = bounds.y;
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} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM)) {
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box.y = bounds.y + (bounds.height - box.height);
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} else {
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box.y = bounds.y + ((bounds.height / 2) - (box.height / 2));
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}
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// Margin
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if ((state->anchor & both_horiz) == both_horiz) {
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box.x += state->margin.left;
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box.width -= state->margin.left + state->margin.right;
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} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT)) {
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box.x += state->margin.left;
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} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT)) {
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box.x -= state->margin.right;
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}
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if ((state->anchor & both_vert) == both_vert) {
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box.y += state->margin.top;
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box.height -= state->margin.top + state->margin.bottom;
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} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP)) {
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box.y += state->margin.top;
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} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM)) {
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box.y -= state->margin.bottom;
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}
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// Apply
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roots_surface->geo = box;
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apply_exclusive(usable_area, state->anchor, state->exclusive_zone,
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state->margin.top, state->margin.right,
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state->margin.bottom, state->margin.left);
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wlr_log(L_DEBUG, "arranged layer at %dx%d@%d,%d",
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box.width, box.height, box.x, box.y);
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wlr_layer_surface_configure(layer, box.width, box.height);
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}
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}
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static void arrange_layers(struct wlr_output *_output) {
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struct roots_output *output = _output->data;
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struct wlr_box usable_area = { 0 };
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wlr_output_effective_resolution(output->wlr_output,
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&usable_area.width, &usable_area.height);
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// Arrange exclusive surfaces from top->bottom
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arrange_layer(output->wlr_output,
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&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY],
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&usable_area, true);
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arrange_layer(output->wlr_output,
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&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP],
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&usable_area, true);
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arrange_layer(output->wlr_output,
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&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM],
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&usable_area, true);
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arrange_layer(output->wlr_output,
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&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND],
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&usable_area, true);
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memcpy(&output->usable_area, &usable_area, sizeof(struct wlr_box));
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struct roots_view *view;
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wl_list_for_each(view, &output->desktop->views, link) {
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if (view->maximized) {
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view_arrange_maximized(view);
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}
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}
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// Arrange non-exlusive surfaces from top->bottom
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wlr_output_effective_resolution(output->wlr_output,
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&usable_area.width, &usable_area.height);
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arrange_layer(output->wlr_output,
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&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY],
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&usable_area, false);
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arrange_layer(output->wlr_output,
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&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP],
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&usable_area, false);
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arrange_layer(output->wlr_output,
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&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM],
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&usable_area, false);
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arrange_layer(output->wlr_output,
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&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND],
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&usable_area, false);
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}
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static void handle_output_destroy(struct wl_listener *listener, void *data) {
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struct roots_layer_surface *layer =
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wl_container_of(listener, layer, output_destroy);
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layer->layer_surface->output = NULL;
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wl_list_remove(&layer->output_destroy.link);
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wl_list_remove(&layer->output_mode.link);
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wlr_layer_surface_close(layer->layer_surface);
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}
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static void handle_output_mode(struct wl_listener *listener, void *data) {
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arrange_layers((struct wlr_output *)data);
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}
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static void handle_surface_commit(struct wl_listener *listener, void *data) {
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struct roots_layer_surface *layer =
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wl_container_of(listener, layer, surface_commit);
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struct wlr_layer_surface *layer_surface = layer->layer_surface;
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struct wlr_output *wlr_output = layer_surface->output;
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if (wlr_output != NULL) {
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struct roots_output *output = wlr_output->data;
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output_damage_from_local_surface(output, layer_surface->surface,
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layer->geo.x, layer->geo.y, 0);
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arrange_layers(wlr_output);
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output_damage_from_local_surface(output, layer_surface->surface,
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layer->geo.x, layer->geo.y, 0);
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}
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}
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static void unmap(struct wlr_layer_surface *layer_surface) {
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struct roots_layer_surface *layer = layer_surface->data;
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if (layer->link.prev) {
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wl_list_remove(&layer->link);
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}
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struct wlr_output *wlr_output = layer_surface->output;
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if (wlr_output != NULL) {
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struct roots_output *output = wlr_output->data;
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wlr_output_damage_add_box(output->damage, &layer->geo);
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}
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}
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static void handle_destroy(struct wl_listener *listener, void *data) {
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struct roots_layer_surface *layer = wl_container_of(
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listener, layer, destroy);
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if (layer->layer_surface->mapped) {
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unmap(layer->layer_surface);
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}
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wl_list_remove(&layer->output_destroy.link);
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wl_list_remove(&layer->output_mode.link);
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arrange_layers(layer->layer_surface->output);
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free(layer);
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}
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static void handle_map(struct wl_listener *listener, void *data) {
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struct wlr_layer_surface *layer_surface = data;
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struct roots_layer_surface *layer = layer_surface->data;
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struct wlr_output *wlr_output = layer_surface->output;
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struct roots_output *output = wlr_output->data;
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wlr_output_damage_add_box(output->damage, &layer->geo);
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}
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static void handle_unmap(struct wl_listener *listener, void *data) {
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struct roots_layer_surface *layer = wl_container_of(
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listener, layer, unmap);
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unmap(layer->layer_surface);
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}
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void handle_layer_shell_surface(struct wl_listener *listener, void *data) {
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struct wlr_layer_surface *layer_surface = data;
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struct roots_desktop *desktop =
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wl_container_of(listener, desktop, layer_shell_surface);
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wlr_log(L_DEBUG, "new layer surface: namespace %s layer %d anchor %d "
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"size %dx%d margin %d,%d,%d,%d",
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layer_surface->namespace, layer_surface->layer, layer_surface->layer,
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layer_surface->client_pending.desired_width,
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layer_surface->client_pending.desired_height,
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layer_surface->client_pending.margin.top,
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layer_surface->client_pending.margin.right,
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layer_surface->client_pending.margin.bottom,
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layer_surface->client_pending.margin.left);
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struct roots_layer_surface *roots_surface =
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calloc(1, sizeof(struct roots_layer_surface));
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if (!roots_surface) {
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return;
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}
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roots_surface->surface_commit.notify = handle_surface_commit;
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wl_signal_add(&layer_surface->surface->events.commit,
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&roots_surface->surface_commit);
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roots_surface->output_destroy.notify = handle_output_destroy;
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wl_signal_add(&layer_surface->output->events.destroy,
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&roots_surface->output_destroy);
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roots_surface->output_mode.notify = handle_output_mode;
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wl_signal_add(&layer_surface->output->events.mode,
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&roots_surface->output_mode);
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roots_surface->destroy.notify = handle_destroy;
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wl_signal_add(&layer_surface->events.destroy, &roots_surface->destroy);
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roots_surface->map.notify = handle_map;
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wl_signal_add(&layer_surface->events.map, &roots_surface->map);
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roots_surface->unmap.notify = handle_unmap;
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wl_signal_add(&layer_surface->events.unmap, &roots_surface->unmap);
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roots_surface->layer_surface = layer_surface;
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layer_surface->data = roots_surface;
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struct roots_output *output = layer_surface->output->data;
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wl_list_insert(&output->layers[layer_surface->layer], &roots_surface->link);
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// Temporarily set the layer's current state to client_pending
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// So that we can easily arrange it
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struct wlr_layer_surface_state old_state = layer_surface->current;
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layer_surface->current = layer_surface->client_pending;
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arrange_layers(output->wlr_output);
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layer_surface->current = old_state;
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}
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