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reconfigure output on resolution change

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This commit is contained in:
Tony Crisci 2017-08-17 16:20:15 -04:00 committed by Drew DeVault
parent e0b409760d
commit 59a71f59b9
1 changed files with 66 additions and 41 deletions
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107
examples/output-layout.c
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@ -6,6 +6,7 @@
#include <string.h>
#include <strings.h>
#include <unistd.h>
#include <limits.h>
#include <wayland-server.h>
#include <wayland-server-protocol.h>
#include <xkbcommon/xkbcommon.h>
@ -113,50 +114,73 @@ static void handle_output_frame(struct output_state *output, struct timespec *ts
}
}
static inline int max(int a, int b) {
if (a < b)
return b;
return a;
}
static void configure_layout(struct sample_state *sample) {
wlr_output_layout_destroy(sample->layout);
sample->layout = wlr_output_layout_init();
sample->main_output = NULL;
int max_x = wl_list_empty(&sample->config) ? 0 : INT_MIN;
// first add all the configure outputs
struct output_state *output;
wl_list_for_each(output, &sample->outputs, link) {
struct output_config *conf;
wl_list_for_each(conf, &sample->config, link) {
if (strcmp(conf->name, output->output->name) == 0) {
wlr_output_layout_add(sample->layout, output->output,
conf->x, conf->y);
wlr_output_transform(output->output, conf->transform);
int width, height;
wlr_output_effective_resolution(output->output, &width, &height);
max_x = max(max_x, conf->x + width);
if (!sample->main_output) {
sample->main_output = output->output;
sample->x_offs = conf->x + 20;
sample->y_offs = conf->y + 20;
}
break;
}
}
}
// now add all the other configured outputs in a sensible position
wl_list_for_each(output, &sample->outputs, link) {
if (wlr_output_layout_get(sample->layout, output->output)) {
continue;
}
wlr_output_layout_add(sample->layout, output->output, max_x, 0);
int width, height;
wlr_output_effective_resolution(output->output, &width, &height);
wlr_output_effective_resolution(output->output, &width, &height);
if (!sample->main_output) {
sample->main_output = output->output;
sample->x_offs = max_x + 200;
sample->y_offs = 200;
}
max_x += width;
}
}
static void handle_output_resolution(struct compositor_state *state, struct output_state *output) {
struct sample_state *sample = state->data;
configure_layout(sample);
// reset the image
struct wlr_output_layout_output *l_output = wlr_output_layout_get(sample->layout, sample->main_output);
sample->x_offs = l_output->x + 20;
sample->y_offs = l_output->y + 20;
}
static void handle_output_add(struct output_state *output) {
struct sample_state *sample = output->compositor->data;
bool found = false;
struct output_config *conf;
wl_list_for_each(conf, &sample->config, link) {
if (strcmp(conf->name, output->output->name) == 0) {
wlr_output_layout_add(sample->layout, output->output,
conf->x, conf->y);
wlr_output_transform(output->output, conf->transform);
if (!sample->main_output) {
sample->main_output = output->output;
sample->x_offs = conf->x + 20;
sample->y_offs = conf->y + 20;
}
wlr_log(L_DEBUG, "Adding output to layout: %s", output->output->name);
found = true;
break;
}
}
// if it's not in the config, just place it next to the rightmost output
if (!found) {
int x = 0;
struct output_state *_output;
wl_list_for_each(_output, &sample->outputs, link) {
struct wlr_output_layout_output *layout_output =
wlr_output_layout_get(sample->layout, _output->output);
if (layout_output && layout_output->output) {
x += layout_output->x + _output->output->width;
}
}
wlr_output_layout_add(sample->layout, output->output, x, 0);
if (wl_list_empty(&sample->config) && !sample->main_output) {
sample->main_output = output->output;
sample->x_offs = x + 20;
sample->y_offs = 20;
}
}
wl_list_insert(&sample->outputs, &output->link);
configure_layout(sample);
}
static void update_velocities(struct compositor_state *state,
@ -287,6 +311,7 @@ int main(int argc, char *argv[]) {
compositor.data = &state;
compositor.output_add_cb = handle_output_add;
compositor.output_frame_cb = handle_output_frame;
compositor.output_resolution_cb = handle_output_resolution;
compositor.keyboard_key_cb = handle_keyboard_key;
compositor_init(&compositor);