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Add hidpi support to swaybar #1722

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merged 4 commits into from
Apr 4, 2018
Merged

Add hidpi support to swaybar #1722

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2605950
Add hidpi support to swaybar
ddevault Apr 4, 2018
d48e703
Don't use asserts with side-effects
ddevault Apr 4, 2018
c4e92c8
Adjust height calculation, naming
ddevault Apr 4, 2018
38bdd4b
Address review feedback
ddevault Apr 4, 2018
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1 change: 1 addition & 0 deletions include/swaybar/bar.h
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Original file line number Diff line number Diff line change
Expand Up @@ -58,6 +58,7 @@ struct swaybar_output {
bool focused;

uint32_t width, height;
int32_t scale;
struct pool_buffer buffers[2];
struct pool_buffer *current_buffer;
};
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89 changes: 72 additions & 17 deletions swaybar/bar.c
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Original file line number Diff line number Diff line change
Expand Up @@ -69,11 +69,19 @@ static void wl_pointer_enter(void *data, struct wl_pointer *wl_pointer,
break;
}
}
int max_scale = 1;
struct swaybar_output *_output;
wl_list_for_each(_output, &bar->outputs, link) {
if (_output->scale > max_scale) {
max_scale = _output->scale;
}
}
wl_surface_set_buffer_scale(pointer->cursor_surface, max_scale);
wl_surface_attach(pointer->cursor_surface,
wl_cursor_image_get_buffer(pointer->cursor_image), 0, 0);
wl_pointer_set_cursor(wl_pointer, serial, pointer->cursor_surface,
pointer->cursor_image->hotspot_x,
pointer->cursor_image->hotspot_y);
pointer->cursor_image->hotspot_x / max_scale,
pointer->cursor_image->hotspot_y / max_scale);
wl_surface_commit(pointer->cursor_surface);
}

Expand Down Expand Up @@ -103,10 +111,12 @@ static void wl_pointer_button(void *data, struct wl_pointer *wl_pointer,
}
struct swaybar_hotspot *hotspot;
wl_list_for_each(hotspot, &output->hotspots, link) {
if (pointer->x >= hotspot->x
&& pointer->y >= hotspot->y
&& pointer->x < hotspot->x + hotspot->width
&& pointer->y < hotspot->y + hotspot->height) {
double x = pointer->x * output->scale;
double y = pointer->y * output->scale;
if (x >= hotspot->x
&& y >= hotspot->y
&& x < hotspot->x + hotspot->width
&& y < hotspot->y + hotspot->height) {
hotspot->callback(output, pointer->x, pointer->y,
button, hotspot->data);
}
Expand Down Expand Up @@ -197,12 +207,43 @@ const struct wl_seat_listener seat_listener = {
.name = seat_handle_name,
};

static void output_geometry(void *data, struct wl_output *output, int32_t x,
int32_t y, int32_t width_mm, int32_t height_mm, int32_t subpixel,
const char *make, const char *model, int32_t transform) {
// Who cares
}

static void output_mode(void *data, struct wl_output *output, uint32_t flags,
int32_t width, int32_t height, int32_t refresh) {
// Who cares
}

static void output_done(void *data, struct wl_output *output) {
// Who cares
}

static void output_scale(void *data, struct wl_output *wl_output,
int32_t factor) {
struct swaybar_output *output = data;
output->scale = factor;
if (output->surface) {
render_frame(output->bar, output);
}
}

struct wl_output_listener output_listener = {
.geometry = output_geometry,
.mode = output_mode,
.done = output_done,
.scale = output_scale,
};

static void handle_global(void *data, struct wl_registry *registry,
uint32_t name, const char *interface, uint32_t version) {
struct swaybar *bar = data;
if (strcmp(interface, wl_compositor_interface.name) == 0) {
bar->compositor = wl_registry_bind(registry, name,
&wl_compositor_interface, 1);
&wl_compositor_interface, 3);
} else if (strcmp(interface, wl_seat_interface.name) == 0) {
bar->seat = wl_registry_bind(registry, name,
&wl_seat_interface, 1);
Expand All @@ -216,7 +257,9 @@ static void handle_global(void *data, struct wl_registry *registry,
calloc(1, sizeof(struct swaybar_output));
output->bar = bar;
output->output = wl_registry_bind(registry, name,
&wl_output_interface, 1);
&wl_output_interface, 3);
wl_output_add_listener(output->output, &output_listener, output);
output->scale = 1;
output->index = index++;
wl_list_init(&output->workspaces);
wl_list_init(&output->hotspots);
Expand Down Expand Up @@ -256,33 +299,45 @@ void bar_setup(struct swaybar *bar,
bar->status = status_line_init(bar->config->status_command);
}

assert(bar->display = wl_display_connect(NULL));
bar->display = wl_display_connect(NULL);
assert(bar->display);

struct wl_registry *registry = wl_display_get_registry(bar->display);
wl_registry_add_listener(registry, &registry_listener, bar);
wl_display_roundtrip(bar->display);
assert(bar->compositor && bar->layer_shell && bar->shm);
wl_display_roundtrip(bar->display);

struct swaybar_pointer *pointer = &bar->pointer;

assert(pointer->cursor_theme = wl_cursor_theme_load(NULL, 16, bar->shm));
int max_scale = 1;
struct swaybar_output *output;
wl_list_for_each(output, &bar->outputs, link) {
if (output->scale > max_scale) {
max_scale = output->scale;
}
}

pointer->cursor_theme = wl_cursor_theme_load(
NULL, 16 * (max_scale * 2), bar->shm);
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Cursor size changes when hovering the bar. Should be 24 * max_scale.

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What if the output scale is dynamically changed?

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Aha

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If the output scale is dynamically changed we're SOL, I want to file a ticket and deal with it never

assert(pointer->cursor_theme);
struct wl_cursor *cursor;
assert(cursor = wl_cursor_theme_get_cursor(
pointer->cursor_theme, "left_ptr"));
cursor = wl_cursor_theme_get_cursor(pointer->cursor_theme, "left_ptr");
assert(cursor);
pointer->cursor_image = cursor->images[0];
assert(pointer->cursor_surface =
wl_compositor_create_surface(bar->compositor));
pointer->cursor_surface = wl_compositor_create_surface(bar->compositor);
assert(pointer->cursor_surface);

// TODO: we might not necessarily be meant to do all of the outputs
struct swaybar_output *output;
wl_list_for_each(output, &bar->outputs, link) {
struct config_output *coutput;
wl_list_for_each(coutput, &bar->config->outputs, link) {
if (coutput->index != output->index) {
continue;
}
output->name = strdup(coutput->name);
assert(output->surface = wl_compositor_create_surface(
bar->compositor));
output->surface = wl_compositor_create_surface(bar->compositor);
assert(output->surface);
output->layer_surface = zwlr_layer_shell_v1_get_layer_surface(
bar->layer_shell, output->surface, output->output,
ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM, "panel");
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