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sway-patched-tray-menu/sway/desktop/render.c
Simon Ser e19bd1e474 Add support for viewporter 
Depends on [1].

[1]: https://github.com/swaywm/wlroots/pull/2092
2020-06-17 10:18:58 -06:00

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#define _POSIX_C_SOURCE 200809L
#include <assert.h>
#include <GLES2/gl2.h>
#include <stdlib.h>
#include <strings.h>
#include <time.h>
#include <wayland-server-core.h>
#include <wlr/render/gles2.h>
#include <wlr/render/wlr_renderer.h>
#include <wlr/types/wlr_box.h>
#include <wlr/types/wlr_buffer.h>
#include <wlr/types/wlr_matrix.h>
#include <wlr/types/wlr_output_damage.h>
#include <wlr/types/wlr_output_layout.h>
#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_surface.h>
#include <wlr/util/region.h>
#include "log.h"
#include "config.h"
#include "sway/config.h"
#include "sway/input/input-manager.h"
#include "sway/input/seat.h"
#include "sway/layers.h"
#include "sway/output.h"
#include "sway/server.h"
#include "sway/tree/arrange.h"
#include "sway/tree/container.h"
#include "sway/tree/root.h"
#include "sway/tree/view.h"
#include "sway/tree/workspace.h"
struct render_data {
pixman_region32_t *damage;
float alpha;
};
/**
* Apply scale to a width or height.
*
* One does not simply multiply the width by the scale. We allow fractional
* scaling, which means the resulting scaled width might be a decimal.
* So we round it.
*
* But even this can produce undesirable results depending on the X or Y offset
* of the box. For example, with a scale of 1.5, a box with width=1 should not
* scale to 2px if its X coordinate is 1, because the X coordinate would have
* scaled to 2px.
*/
static int scale_length(int length, int offset, float scale) {
return round((offset + length) * scale) - round(offset * scale);
}
static void scissor_output(struct wlr_output *wlr_output,
pixman_box32_t *rect) {
struct wlr_renderer *renderer = wlr_backend_get_renderer(wlr_output->backend);
assert(renderer);
struct wlr_box box = {
.x = rect->x1,
.y = rect->y1,
.width = rect->x2 - rect->x1,
.height = rect->y2 - rect->y1,
};
int ow, oh;
wlr_output_transformed_resolution(wlr_output, &ow, &oh);
enum wl_output_transform transform =
wlr_output_transform_invert(wlr_output->transform);
wlr_box_transform(&box, &box, transform, ow, oh);
wlr_renderer_scissor(renderer, &box);
}
static void set_scale_filter(struct wlr_output *wlr_output,
struct wlr_texture *texture, enum scale_filter_mode scale_filter) {
if (!wlr_texture_is_gles2(texture)) {
return;
}
struct wlr_gles2_texture_attribs attribs;
wlr_gles2_texture_get_attribs(texture, &attribs);
glBindTexture(attribs.target, attribs.tex);
switch (scale_filter) {
case SCALE_FILTER_LINEAR:
glTexParameteri(attribs.target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
break;
case SCALE_FILTER_NEAREST:
glTexParameteri(attribs.target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
break;
case SCALE_FILTER_DEFAULT:
case SCALE_FILTER_SMART:
assert(false); // unreachable
}
}
static void render_texture(struct wlr_output *wlr_output,
pixman_region32_t *output_damage, struct wlr_texture *texture,
const struct wlr_fbox *src_box, const struct wlr_box *dst_box,
const float matrix[static 9], float alpha) {
struct wlr_renderer *renderer =
wlr_backend_get_renderer(wlr_output->backend);
struct sway_output *output = wlr_output->data;
struct wlr_gles2_texture_attribs attribs;
wlr_gles2_texture_get_attribs(texture, &attribs);
pixman_region32_t damage;
pixman_region32_init(&damage);
pixman_region32_union_rect(&damage, &damage, dst_box->x, dst_box->y,
dst_box->width, dst_box->height);
pixman_region32_intersect(&damage, &damage, output_damage);
bool damaged = pixman_region32_not_empty(&damage);
if (!damaged) {
goto damage_finish;
}
int nrects;
pixman_box32_t *rects = pixman_region32_rectangles(&damage, &nrects);
for (int i = 0; i < nrects; ++i) {
scissor_output(wlr_output, &rects[i]);
set_scale_filter(wlr_output, texture, output->scale_filter);
if (src_box != NULL) {
wlr_render_subtexture_with_matrix(renderer, texture, src_box, matrix, alpha);
} else {
wlr_render_texture_with_matrix(renderer, texture, matrix, alpha);
}
}
damage_finish:
pixman_region32_fini(&damage);
}
static void render_surface_iterator(struct sway_output *output, struct sway_view *view,
struct wlr_surface *surface, struct wlr_box *_box, float rotation,
void *_data) {
struct render_data *data = _data;
struct wlr_output *wlr_output = output->wlr_output;
pixman_region32_t *output_damage = data->damage;
float alpha = data->alpha;
struct wlr_texture *texture = wlr_surface_get_texture(surface);
if (!texture) {
return;
}
struct wlr_fbox src_box;
wlr_surface_get_buffer_source_box(surface, &src_box);
struct wlr_box dst_box = *_box;
scale_box(&dst_box, wlr_output->scale);
float matrix[9];
enum wl_output_transform transform =
wlr_output_transform_invert(surface->current.transform);
wlr_matrix_project_box(matrix, &dst_box, transform, rotation,
wlr_output->transform_matrix);
render_texture(wlr_output, output_damage, texture,
&src_box, &dst_box, matrix, alpha);
wlr_presentation_surface_sampled_on_output(server.presentation, surface,
wlr_output);
}
static void render_layer_toplevel(struct sway_output *output,
pixman_region32_t *damage, struct wl_list *layer_surfaces) {
struct render_data data = {
.damage = damage,
.alpha = 1.0f,
};
output_layer_for_each_surface_toplevel(output, layer_surfaces,
render_surface_iterator, &data);
}
static void render_layer_popups(struct sway_output *output,
pixman_region32_t *damage, struct wl_list *layer_surfaces) {
struct render_data data = {
.damage = damage,
.alpha = 1.0f,
};
output_layer_for_each_surface_popup(output, layer_surfaces,
render_surface_iterator, &data);
}
#if HAVE_XWAYLAND
static void render_unmanaged(struct sway_output *output,
pixman_region32_t *damage, struct wl_list *unmanaged) {
struct render_data data = {
.damage = damage,
.alpha = 1.0f,
};
output_unmanaged_for_each_surface(output, unmanaged,
render_surface_iterator, &data);
}
#endif
static void render_drag_icons(struct sway_output *output,
pixman_region32_t *damage, struct wl_list *drag_icons) {
struct render_data data = {
.damage = damage,
.alpha = 1.0f,
};
output_drag_icons_for_each_surface(output, drag_icons,
render_surface_iterator, &data);
}
// _box.x and .y are expected to be layout-local
// _box.width and .height are expected to be output-buffer-local
void render_rect(struct sway_output *output,
pixman_region32_t *output_damage, const struct wlr_box *_box,
float color[static 4]) {
struct wlr_output *wlr_output = output->wlr_output;
struct wlr_renderer *renderer =
wlr_backend_get_renderer(wlr_output->backend);
struct wlr_box box;
memcpy(&box, _box, sizeof(struct wlr_box));
box.x -= output->lx * wlr_output->scale;
box.y -= output->ly * wlr_output->scale;
pixman_region32_t damage;
pixman_region32_init(&damage);
pixman_region32_union_rect(&damage, &damage, box.x, box.y,
box.width, box.height);
pixman_region32_intersect(&damage, &damage, output_damage);
bool damaged = pixman_region32_not_empty(&damage);
if (!damaged) {
goto damage_finish;
}
int nrects;
pixman_box32_t *rects = pixman_region32_rectangles(&damage, &nrects);
for (int i = 0; i < nrects; ++i) {
scissor_output(wlr_output, &rects[i]);
wlr_render_rect(renderer, &box, color,
wlr_output->transform_matrix);
}
damage_finish:
pixman_region32_fini(&damage);
}
void premultiply_alpha(float color[4], float opacity) {
color[3] *= opacity;
color[0] *= color[3];
color[1] *= color[3];
color[2] *= color[3];
}
static void render_view_toplevels(struct sway_view *view,
struct sway_output *output, pixman_region32_t *damage, float alpha) {
struct render_data data = {
.damage = damage,
.alpha = alpha,
};
// Render all toplevels without descending into popups
double ox = view->container->surface_x -
output->lx - view->geometry.x;
double oy = view->container->surface_y -
output->ly - view->geometry.y;
output_surface_for_each_surface(output, view->surface, ox, oy,
render_surface_iterator, &data);
}
static void render_popup_iterator(struct sway_output *output, struct sway_view *view,
struct wlr_surface *surface, struct wlr_box *box, float rotation,
void *data) {
// Render this popup's surface
render_surface_iterator(output, view, surface, box, rotation, data);
// Render this popup's child toplevels
output_surface_for_each_surface(output, surface, box->x, box->y,
render_surface_iterator, data);
}
static void render_view_popups(struct sway_view *view,
struct sway_output *output, pixman_region32_t *damage, float alpha) {
struct render_data data = {
.damage = damage,
.alpha = alpha,
};
output_view_for_each_popup(output, view, render_popup_iterator, &data);
}
static void render_saved_view(struct sway_view *view,
struct sway_output *output, pixman_region32_t *damage, float alpha) {
struct wlr_output *wlr_output = output->wlr_output;
if (wl_list_empty(&view->saved_buffers)) {
return;
}
struct sway_saved_buffer *saved_buf;
wl_list_for_each(saved_buf, &view->saved_buffers, link) {
if (!saved_buf->buffer->texture) {
continue;
}
struct wlr_box box = {
.x = view->container->surface_x - output->lx -
view->saved_geometry.x + saved_buf->x,
.y = view->container->surface_y - output->ly -
view->saved_geometry.y + saved_buf->y,
.width = saved_buf->width,
.height = saved_buf->height,
};
struct wlr_box output_box = {
.width = output->width,
.height = output->height,
};
struct wlr_box intersection;
bool intersects = wlr_box_intersection(&intersection, &output_box, &box);
if (!intersects) {
continue;
}
scale_box(&box, wlr_output->scale);
float matrix[9];
enum wl_output_transform transform = wlr_output_transform_invert(saved_buf->transform);
wlr_matrix_project_box(matrix, &box, transform, 0,
wlr_output->transform_matrix);
render_texture(wlr_output, damage, saved_buf->buffer->texture,
&saved_buf->source_box, &box, matrix, alpha);
}
// FIXME: we should set the surface that this saved buffer originates from
// as sampled here.
// https://github.com/swaywm/sway/pull/4465#discussion_r321082059
}
/**
* Render a view's surface and left/bottom/right borders.
*/
static void render_view(struct sway_output *output, pixman_region32_t *damage,
struct sway_container *con, struct border_colors *colors) {
struct sway_view *view = con->view;
if (!wl_list_empty(&view->saved_buffers)) {
render_saved_view(view, output, damage, view->container->alpha);
} else if (view->surface) {
render_view_toplevels(view, output, damage, view->container->alpha);
}
if (con->current.border == B_NONE || con->current.border == B_CSD) {
return;
}
struct wlr_box box;
float output_scale = output->wlr_output->scale;
float color[4];
struct sway_container_state *state = &con->current;
if (state->border_left) {
memcpy(&color, colors->child_border, sizeof(float) * 4);
premultiply_alpha(color, con->alpha);
box.x = state->x;
box.y = state->content_y;
box.width = state->border_thickness;
box.height = state->content_height;
scale_box(&box, output_scale);
render_rect(output, damage, &box, color);
}
list_t *siblings = container_get_current_siblings(con);
enum sway_container_layout layout =
container_current_parent_layout(con);
if (state->border_right) {
if (con->current.parent && siblings->length == 1 && layout == L_HORIZ) {
memcpy(&color, colors->indicator, sizeof(float) * 4);
} else {
memcpy(&color, colors->child_border, sizeof(float) * 4);
}
premultiply_alpha(color, con->alpha);
box.x = state->content_x + state->content_width;
box.y = state->content_y;
box.width = state->border_thickness;
box.height = state->content_height;
scale_box(&box, output_scale);
render_rect(output, damage, &box, color);
}
if (state->border_bottom) {
if (con->current.parent && siblings->length == 1 && layout == L_VERT) {
memcpy(&color, colors->indicator, sizeof(float) * 4);
} else {
memcpy(&color, colors->child_border, sizeof(float) * 4);
}
premultiply_alpha(color, con->alpha);
box.x = state->x;
box.y = state->content_y + state->content_height;
box.width = state->width;
box.height = state->border_thickness;
scale_box(&box, output_scale);
render_rect(output, damage, &box, color);
}
}
/**
* Render a titlebar.
*
* Care must be taken not to render over the same pixel multiple times,
* otherwise the colors will be incorrect when using opacity.
*
* The height is: 1px border, 3px padding, font height, 3px padding, 1px border
* The left side is: 1px border, 2px padding, title
*/
static void render_titlebar(struct sway_output *output,
pixman_region32_t *output_damage, struct sway_container *con,
int x, int y, int width,
struct border_colors *colors, struct wlr_texture *title_texture,
struct wlr_texture *marks_texture) {
struct wlr_box box;
float color[4];
float output_scale = output->wlr_output->scale;
double output_x = output->lx;
double output_y = output->ly;
int titlebar_border_thickness = config->titlebar_border_thickness;
int titlebar_h_padding = config->titlebar_h_padding;
int titlebar_v_padding = config->titlebar_v_padding;
enum alignment title_align = config->title_align;
// Single pixel bar above title
memcpy(&color, colors->border, sizeof(float) * 4);
premultiply_alpha(color, con->alpha);
box.x = x;
box.y = y;
box.width = width;
box.height = titlebar_border_thickness;
scale_box(&box, output_scale);
render_rect(output, output_damage, &box, color);
// Single pixel bar below title
box.x = x;
box.y = y + container_titlebar_height() - titlebar_border_thickness;
box.width = width;
box.height = titlebar_border_thickness;
scale_box(&box, output_scale);
render_rect(output, output_damage, &box, color);
// Single pixel left edge
box.x = x;
box.y = y + titlebar_border_thickness;
box.width = titlebar_border_thickness;
box.height = container_titlebar_height() - titlebar_border_thickness * 2;
scale_box(&box, output_scale);
render_rect(output, output_damage, &box, color);
// Single pixel right edge
box.x = x + width - titlebar_border_thickness;
box.y = y + titlebar_border_thickness;
box.width = titlebar_border_thickness;
box.height = container_titlebar_height() - titlebar_border_thickness * 2;
scale_box(&box, output_scale);
render_rect(output, output_damage, &box, color);
int inner_x = x - output_x + titlebar_h_padding;
int bg_y = y + titlebar_border_thickness;
size_t inner_width = width - titlebar_h_padding * 2;
// output-buffer local
int ob_inner_x = round(inner_x * output_scale);
int ob_inner_width = scale_length(inner_width, inner_x, output_scale);
int ob_bg_height = scale_length(
(titlebar_v_padding - titlebar_border_thickness) * 2 +
config->font_height, bg_y, output_scale);
// Marks
int ob_marks_x = 0; // output-buffer-local
int ob_marks_width = 0; // output-buffer-local
if (config->show_marks && marks_texture) {
struct wlr_box texture_box;
wlr_texture_get_size(marks_texture,
&texture_box.width, &texture_box.height);
ob_marks_width = texture_box.width;
// The marks texture might be shorter than the config->font_height, in
// which case we need to pad it as evenly as possible above and below.
int ob_padding_total = ob_bg_height - texture_box.height;
int ob_padding_above = floor(ob_padding_total / 2.0);
int ob_padding_below = ceil(ob_padding_total / 2.0);
// Render texture. If the title is on the right, the marks will be on
// the left. Otherwise, they will be on the right.
if (title_align == ALIGN_RIGHT || texture_box.width > ob_inner_width) {
texture_box.x = ob_inner_x;
} else {
texture_box.x = ob_inner_x + ob_inner_width - texture_box.width;
}
ob_marks_x = texture_box.x;
texture_box.y = round((bg_y - output_y) * output_scale) +
ob_padding_above;
float matrix[9];
wlr_matrix_project_box(matrix, &texture_box,
WL_OUTPUT_TRANSFORM_NORMAL,
0.0, output->wlr_output->transform_matrix);
if (ob_inner_width < texture_box.width) {
texture_box.width = ob_inner_width;
}
render_texture(output->wlr_output, output_damage, marks_texture,
NULL, &texture_box, matrix, con->alpha);
// Padding above
memcpy(&color, colors->background, sizeof(float) * 4);
premultiply_alpha(color, con->alpha);
box.x = texture_box.x + round(output_x * output_scale);
box.y = round((y + titlebar_border_thickness) * output_scale);
box.width = texture_box.width;
box.height = ob_padding_above;
render_rect(output, output_damage, &box, color);
// Padding below
box.y += ob_padding_above + texture_box.height;
box.height = ob_padding_below;
render_rect(output, output_damage, &box, color);
}
// Title text
int ob_title_x = 0; // output-buffer-local
int ob_title_width = 0; // output-buffer-local
if (title_texture) {
struct wlr_box texture_box;
wlr_texture_get_size(title_texture,
&texture_box.width, &texture_box.height);
ob_title_width = texture_box.width;
// The title texture might be shorter than the config->font_height,
// in which case we need to pad it above and below.
int ob_padding_above = round((config->font_baseline -
con->title_baseline + titlebar_v_padding -
titlebar_border_thickness) * output_scale);
int ob_padding_below = ob_bg_height - ob_padding_above -
texture_box.height;
// Render texture
if (texture_box.width > ob_inner_width - ob_marks_width) {
texture_box.x = (title_align == ALIGN_RIGHT && ob_marks_width)
? ob_marks_x + ob_marks_width : ob_inner_x;
} else if (title_align == ALIGN_LEFT) {
texture_box.x = ob_inner_x;
} else if (title_align == ALIGN_CENTER) {
// If there are marks visible, center between the edge and marks.
// Otherwise, center in the inner area.
if (ob_marks_width) {
texture_box.x = (ob_inner_x + ob_marks_x) / 2
- texture_box.width / 2;
} else {
texture_box.x = ob_inner_x + ob_inner_width / 2
- texture_box.width / 2;
}
} else {
texture_box.x = ob_inner_x + ob_inner_width - texture_box.width;
}
ob_title_x = texture_box.x;
texture_box.y =
round((bg_y - output_y) * output_scale) + ob_padding_above;
float matrix[9];
wlr_matrix_project_box(matrix, &texture_box,
WL_OUTPUT_TRANSFORM_NORMAL,
0.0, output->wlr_output->transform_matrix);
if (ob_inner_width - ob_marks_width < texture_box.width) {
texture_box.width = ob_inner_width - ob_marks_width;
}
render_texture(output->wlr_output, output_damage, title_texture,
NULL, &texture_box, matrix, con->alpha);
// Padding above
memcpy(&color, colors->background, sizeof(float) * 4);
premultiply_alpha(color, con->alpha);
box.x = texture_box.x + round(output_x * output_scale);
box.y = round((y + titlebar_border_thickness) * output_scale);
box.width = texture_box.width;
box.height = ob_padding_above;
render_rect(output, output_damage, &box, color);
// Padding below
box.y += ob_padding_above + texture_box.height;
box.height = ob_padding_below;
render_rect(output, output_damage, &box, color);
}
// Determine the left + right extends of the textures (output-buffer local)
int ob_left_x, ob_left_width, ob_right_x, ob_right_width;
if (ob_title_width == 0 && ob_marks_width == 0) {
ob_left_x = ob_inner_x;
ob_left_width = 0;
ob_right_x = ob_inner_x;
ob_right_width = 0;
} else if (ob_title_x < ob_marks_x) {
ob_left_x = ob_title_x;
ob_left_width = ob_title_width;
ob_right_x = ob_marks_x;
ob_right_width = ob_marks_width;
} else {
ob_left_x = ob_marks_x;
ob_left_width = ob_marks_width;
ob_right_x = ob_title_x;
ob_right_width = ob_title_width;
}
if (ob_left_x < ob_inner_x) {
ob_left_x = ob_inner_x;
} else if (ob_left_x + ob_left_width > ob_right_x + ob_right_width) {
ob_right_x = ob_left_x;
ob_right_width = ob_left_width;
}
// Filler between title and marks
box.width = ob_right_x - ob_left_x - ob_left_width;
if (box.width > 0) {
box.x = ob_left_x + ob_left_width + round(output_x * output_scale);
box.y = round(bg_y * output_scale);
box.height = ob_bg_height;
render_rect(output, output_damage, &box, color);
}
// Padding on left side
box.x = x + titlebar_border_thickness;
box.y = y + titlebar_border_thickness;
box.width = titlebar_h_padding - titlebar_border_thickness;
box.height = (titlebar_v_padding - titlebar_border_thickness) * 2 +
config->font_height;
scale_box(&box, output_scale);
int left_x = ob_left_x + round(output_x * output_scale);
if (box.x + box.width < left_x) {
box.width += left_x - box.x - box.width;
}
render_rect(output, output_damage, &box, color);
// Padding on right side
box.x = x + width - titlebar_h_padding;
box.y = y + titlebar_border_thickness;
box.width = titlebar_h_padding - titlebar_border_thickness;
box.height = (titlebar_v_padding - titlebar_border_thickness) * 2 +
config->font_height;
scale_box(&box, output_scale);
int right_rx = ob_right_x + ob_right_width + round(output_x * output_scale);
if (right_rx < box.x) {
box.width += box.x - right_rx;
box.x = right_rx;
}
render_rect(output, output_damage, &box, color);
}
/**
* Render the top border line for a view using "border pixel".
*/
static void render_top_border(struct sway_output *output,
pixman_region32_t *output_damage, struct sway_container *con,
struct border_colors *colors) {
struct sway_container_state *state = &con->current;
if (!state->border_top) {
return;
}
struct wlr_box box;
float color[4];
float output_scale = output->wlr_output->scale;
// Child border - top edge
memcpy(&color, colors->child_border, sizeof(float) * 4);
premultiply_alpha(color, con->alpha);
box.x = state->x;
box.y = state->y;
box.width = state->width;
box.height = state->border_thickness;
scale_box(&box, output_scale);
render_rect(output, output_damage, &box, color);
}
struct parent_data {
enum sway_container_layout layout;
struct wlr_box box;
list_t *children;
bool focused;
struct sway_container *active_child;
};
static void render_container(struct sway_output *output,
pixman_region32_t *damage, struct sway_container *con, bool parent_focused);
/**
* Render a container's children using a L_HORIZ or L_VERT layout.
*
* Wrap child views in borders and leave child containers borderless because
* they'll apply their own borders to their children.
*/
static void render_containers_linear(struct sway_output *output,
pixman_region32_t *damage, struct parent_data *parent) {
for (int i = 0; i < parent->children->length; ++i) {
struct sway_container *child = parent->children->items[i];
if (child->view) {
struct sway_view *view = child->view;
struct border_colors *colors;
struct wlr_texture *title_texture;
struct wlr_texture *marks_texture;
struct sway_container_state *state = &child->current;
if (view_is_urgent(view)) {
colors = &config->border_colors.urgent;
title_texture = child->title_urgent;
marks_texture = child->marks_urgent;
} else if (state->focused || parent->focused) {
colors = &config->border_colors.focused;
title_texture = child->title_focused;
marks_texture = child->marks_focused;
} else if (child == parent->active_child) {
colors = &config->border_colors.focused_inactive;
title_texture = child->title_focused_inactive;
marks_texture = child->marks_focused_inactive;
} else {
colors = &config->border_colors.unfocused;
title_texture = child->title_unfocused;
marks_texture = child->marks_unfocused;
}
if (state->border == B_NORMAL) {
render_titlebar(output, damage, child, state->x,
state->y, state->width, colors,
title_texture, marks_texture);
} else if (state->border == B_PIXEL) {
render_top_border(output, damage, child, colors);
}
render_view(output, damage, child, colors);
} else {
render_container(output, damage, child,
parent->focused || child->current.focused);
}
}
}
/**
* Render a container's children using the L_TABBED layout.
*/
static void render_containers_tabbed(struct sway_output *output,
pixman_region32_t *damage, struct parent_data *parent) {
if (!parent->children->length) {
return;
}
struct sway_container *current = parent->active_child;
struct border_colors *current_colors = &config->border_colors.unfocused;
int tab_width = parent->box.width / parent->children->length;
// Render tabs
for (int i = 0; i < parent->children->length; ++i) {
struct sway_container *child = parent->children->items[i];
struct sway_view *view = child->view;
struct sway_container_state *cstate = &child->current;
struct border_colors *colors;
struct wlr_texture *title_texture;
struct wlr_texture *marks_texture;
bool urgent = view ?
view_is_urgent(view) : container_has_urgent_child(child);
if (urgent) {
colors = &config->border_colors.urgent;
title_texture = child->title_urgent;
marks_texture = child->marks_urgent;
} else if (cstate->focused || parent->focused) {
colors = &config->border_colors.focused;
title_texture = child->title_focused;
marks_texture = child->marks_focused;
} else if (child == parent->active_child) {
colors = &config->border_colors.focused_inactive;
title_texture = child->title_focused_inactive;
marks_texture = child->marks_focused_inactive;
} else {
colors = &config->border_colors.unfocused;
title_texture = child->title_unfocused;
marks_texture = child->marks_unfocused;
}
int x = cstate->x + tab_width * i;
// Make last tab use the remaining width of the parent
if (i == parent->children->length - 1) {
tab_width = parent->box.width - tab_width * i;
}
render_titlebar(output, damage, child, x, parent->box.y, tab_width,
colors, title_texture, marks_texture);
if (child == current) {
current_colors = colors;
}
}
// Render surface and left/right/bottom borders
if (current->view) {
render_view(output, damage, current, current_colors);
} else {
render_container(output, damage, current,
parent->focused || current->current.focused);
}
}
/**
* Render a container's children using the L_STACKED layout.
*/
static void render_containers_stacked(struct sway_output *output,
pixman_region32_t *damage, struct parent_data *parent) {
if (!parent->children->length) {
return;
}
struct sway_container *current = parent->active_child;
struct border_colors *current_colors = &config->border_colors.unfocused;
size_t titlebar_height = container_titlebar_height();
// Render titles
for (int i = 0; i < parent->children->length; ++i) {
struct sway_container *child = parent->children->items[i];
struct sway_view *view = child->view;
struct sway_container_state *cstate = &child->current;
struct border_colors *colors;
struct wlr_texture *title_texture;
struct wlr_texture *marks_texture;
bool urgent = view ?
view_is_urgent(view) : container_has_urgent_child(child);
if (urgent) {
colors = &config->border_colors.urgent;
title_texture = child->title_urgent;
marks_texture = child->marks_urgent;
} else if (cstate->focused || parent->focused) {
colors = &config->border_colors.focused;
title_texture = child->title_focused;
marks_texture = child->marks_focused;
} else if (child == parent->active_child) {
colors = &config->border_colors.focused_inactive;
title_texture = child->title_focused_inactive;
marks_texture = child->marks_focused_inactive;
} else {
colors = &config->border_colors.unfocused;
title_texture = child->title_unfocused;
marks_texture = child->marks_unfocused;
}
int y = parent->box.y + titlebar_height * i;
render_titlebar(output, damage, child, parent->box.x, y,
parent->box.width, colors, title_texture, marks_texture);
if (child == current) {
current_colors = colors;
}
}
// Render surface and left/right/bottom borders
if (current->view) {
render_view(output, damage, current, current_colors);
} else {
render_container(output, damage, current,
parent->focused || current->current.focused);
}
}
static void render_containers(struct sway_output *output,
pixman_region32_t *damage, struct parent_data *parent) {
if (config->hide_lone_tab && parent->children->length == 1) {
struct sway_container *child = parent->children->items[0];
if (child->view) {
render_containers_linear(output,damage, parent);
return;
}
}
switch (parent->layout) {
case L_NONE:
case L_HORIZ:
case L_VERT:
render_containers_linear(output, damage, parent);
break;
case L_STACKED:
render_containers_stacked(output, damage, parent);
break;
case L_TABBED:
render_containers_tabbed(output, damage, parent);
break;
}
}
static void render_container(struct sway_output *output,
pixman_region32_t *damage, struct sway_container *con, bool focused) {
struct parent_data data = {
.layout = con->current.layout,
.box = {
.x = con->current.x,
.y = con->current.y,
.width = con->current.width,
.height = con->current.height,
},
.children = con->current.children,
.focused = focused,
.active_child = con->current.focused_inactive_child,
};
render_containers(output, damage, &data);
}
static void render_workspace(struct sway_output *output,
pixman_region32_t *damage, struct sway_workspace *ws, bool focused) {
struct parent_data data = {
.layout = ws->current.layout,
.box = {
.x = ws->current.x,
.y = ws->current.y,
.width = ws->current.width,
.height = ws->current.height,
},
.children = ws->current.tiling,
.focused = focused,
.active_child = ws->current.focused_inactive_child,
};
render_containers(output, damage, &data);
}
static void render_floating_container(struct sway_output *soutput,
pixman_region32_t *damage, struct sway_container *con) {
if (con->view) {
struct sway_view *view = con->view;
struct border_colors *colors;
struct wlr_texture *title_texture;
struct wlr_texture *marks_texture;
if (view_is_urgent(view)) {
colors = &config->border_colors.urgent;
title_texture = con->title_urgent;
marks_texture = con->marks_urgent;
} else if (con->current.focused) {
colors = &config->border_colors.focused;
title_texture = con->title_focused;
marks_texture = con->marks_focused;
} else {
colors = &config->border_colors.unfocused;
title_texture = con->title_unfocused;
marks_texture = con->marks_unfocused;
}
if (con->current.border == B_NORMAL) {
render_titlebar(soutput, damage, con, con->current.x,
con->current.y, con->current.width, colors,
title_texture, marks_texture);
} else if (con->current.border == B_PIXEL) {
render_top_border(soutput, damage, con, colors);
}
render_view(soutput, damage, con, colors);
} else {
render_container(soutput, damage, con, con->current.focused);
}
}
static void render_floating(struct sway_output *soutput,
pixman_region32_t *damage) {
for (int i = 0; i < root->outputs->length; ++i) {
struct sway_output *output = root->outputs->items[i];
for (int j = 0; j < output->current.workspaces->length; ++j) {
struct sway_workspace *ws = output->current.workspaces->items[j];
if (!workspace_is_visible(ws)) {
continue;
}
for (int k = 0; k < ws->current.floating->length; ++k) {
struct sway_container *floater = ws->current.floating->items[k];
if (floater->fullscreen_mode != FULLSCREEN_NONE) {
continue;
}
render_floating_container(soutput, damage, floater);
}
}
}
}
static void render_seatops(struct sway_output *output,
pixman_region32_t *damage) {
struct sway_seat *seat;
wl_list_for_each(seat, &server.input->seats, link) {
seatop_render(seat, output, damage);
}
}
void output_render(struct sway_output *output, struct timespec *when,
pixman_region32_t *damage) {
struct wlr_output *wlr_output = output->wlr_output;
struct wlr_renderer *renderer =
wlr_backend_get_renderer(wlr_output->backend);
if (!sway_assert(renderer != NULL,
"expected the output backend to have a renderer")) {
return;
}
struct sway_workspace *workspace = output->current.active_workspace;
if (workspace == NULL) {
return;
}
struct sway_container *fullscreen_con = root->fullscreen_global;
if (!fullscreen_con) {
fullscreen_con = workspace->current.fullscreen;
}
wlr_renderer_begin(renderer, wlr_output->width, wlr_output->height);
if (!pixman_region32_not_empty(damage)) {
// Output isn't damaged but needs buffer swap
goto renderer_end;
}
if (debug.damage == DAMAGE_HIGHLIGHT) {
wlr_renderer_clear(renderer, (float[]){1, 1, 0, 1});
} else if (debug.damage == DAMAGE_RERENDER) {
int width, height;
wlr_output_transformed_resolution(wlr_output, &width, &height);
pixman_region32_union_rect(damage, damage, 0, 0, width, height);
}
if (output_has_opaque_overlay_layer_surface(output)) {
goto render_overlay;
}
if (fullscreen_con) {
float clear_color[] = {0.0f, 0.0f, 0.0f, 1.0f};
int nrects;
pixman_box32_t *rects = pixman_region32_rectangles(damage, &nrects);
for (int i = 0; i < nrects; ++i) {
scissor_output(wlr_output, &rects[i]);
wlr_renderer_clear(renderer, clear_color);
}
if (fullscreen_con->view) {
if (!wl_list_empty(&fullscreen_con->view->saved_buffers)) {
render_saved_view(fullscreen_con->view, output, damage, 1.0f);
} else if (fullscreen_con->view->surface) {
render_view_toplevels(fullscreen_con->view,
output, damage, 1.0f);
}
} else {
render_container(output, damage, fullscreen_con,
fullscreen_con->current.focused);
}
for (int i = 0; i < workspace->current.floating->length; ++i) {
struct sway_container *floater =
workspace->current.floating->items[i];
if (container_is_transient_for(floater, fullscreen_con)) {
render_floating_container(output, damage, floater);
}
}
#if HAVE_XWAYLAND
render_unmanaged(output, damage, &root->xwayland_unmanaged);
#endif
} else {
float clear_color[] = {0.25f, 0.25f, 0.25f, 1.0f};
int nrects;
pixman_box32_t *rects = pixman_region32_rectangles(damage, &nrects);
for (int i = 0; i < nrects; ++i) {
scissor_output(wlr_output, &rects[i]);
wlr_renderer_clear(renderer, clear_color);
}
render_layer_toplevel(output, damage,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND]);
render_layer_toplevel(output, damage,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM]);
render_workspace(output, damage, workspace, workspace->current.focused);
render_floating(output, damage);
#if HAVE_XWAYLAND
render_unmanaged(output, damage, &root->xwayland_unmanaged);
#endif
render_layer_toplevel(output, damage,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP]);
render_layer_popups(output, damage,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND]);
render_layer_popups(output, damage,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM]);
render_layer_popups(output, damage,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP]);
}
render_seatops(output, damage);
struct sway_seat *seat = input_manager_current_seat();
struct sway_container *focus = seat_get_focused_container(seat);
if (focus && focus->view) {
render_view_popups(focus->view, output, damage, focus->alpha);
}
render_overlay:
render_layer_toplevel(output, damage,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY]);
render_layer_popups(output, damage,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY]);
render_drag_icons(output, damage, &root->drag_icons);
renderer_end:
wlr_renderer_scissor(renderer, NULL);
wlr_output_render_software_cursors(wlr_output, damage);
wlr_renderer_end(renderer);
int width, height;
wlr_output_transformed_resolution(wlr_output, &width, &height);
pixman_region32_t frame_damage;
pixman_region32_init(&frame_damage);
enum wl_output_transform transform =
wlr_output_transform_invert(wlr_output->transform);
wlr_region_transform(&frame_damage, &output->damage->current,
transform, width, height);
if (debug.damage == DAMAGE_HIGHLIGHT) {
pixman_region32_union_rect(&frame_damage, &frame_damage,
0, 0, wlr_output->width, wlr_output->height);
}
wlr_output_set_damage(wlr_output, &frame_damage);
pixman_region32_fini(&frame_damage);
if (!wlr_output_commit(wlr_output)) {
return;
}
output->last_frame = *when;
}
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