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add wlr_cursor basic implementation

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This commit is contained in:
Tony Crisci 2017-08-20 16:02:39 -04:00
parent 48fa59c22e
commit e3d47376dc
7 changed files with 450 additions and 73 deletions
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27
backend/drm/drm.c
View File

@ -598,6 +598,8 @@ static bool wlr_drm_output_set_cursor(struct wlr_output *_output,
wlr_matrix_texture(plane->matrix, plane->width, plane->height,
output->output.transform ^ WL_OUTPUT_TRANSFORM_FLIPPED_180);
// TODO the image needs to be rotated depending on the output rotation
plane->wlr_rend = wlr_gles2_renderer_create(&backend->backend);
if (!plane->wlr_rend) {
return false;
@ -651,6 +653,31 @@ static bool wlr_drm_output_move_cursor(struct wlr_output *_output,
struct wlr_drm_output *output = (struct wlr_drm_output *)_output;
struct wlr_drm_backend *backend =
wl_container_of(output->renderer, backend, renderer);
int width, height, tmp;
wlr_output_effective_resolution(_output, &width, &height);
switch (_output->transform) {
case WL_OUTPUT_TRANSFORM_NORMAL:
// nothing to do
break;
case WL_OUTPUT_TRANSFORM_270:
tmp = x;
x = y;
y = -(tmp - width);
break;
case WL_OUTPUT_TRANSFORM_90:
tmp = x;
x = -(y - height);
y = tmp;
break;
default:
// TODO other transformations
wlr_log(L_ERROR, "TODO: handle surface to crtc for transformation = %d",
_output->transform);
break;
}
return backend->iface->crtc_move_cursor(backend, output->crtc, x, y);
}

202
examples/pointer.c
View File

@ -6,6 +6,7 @@
#include <string.h>
#include <unistd.h>
#include <math.h>
#include <assert.h>
#include <wayland-server.h>
#include <wayland-server-protocol.h>
#include <xkbcommon/xkbcommon.h>
@ -16,16 +17,27 @@
#include <wlr/backend.h>
#include <wlr/backend/session.h>
#include <wlr/types/wlr_keyboard.h>
#include <wlr/types/wlr_output_layout.h>
#include <wlr/xcursor.h>
#include <wlr/types/wlr_cursor.h>
#include <wlr/util/log.h>
#include "shared.h"
#include "cat.h"
struct sample_state {
struct wlr_xcursor *cursor;
struct compositor_state *compositor;
struct example_config *config;
struct wlr_xcursor *xcursor;
struct wlr_cursor *cursor;
double cur_x, cur_y;
float default_color[4];
float clear_color[4];
struct wlr_output_layout *layout;
struct wl_listener cursor_motion;
struct wl_listener cursor_motion_absolute;
struct wl_listener cursor_button;
struct wl_listener cursor_axis;
};
static void handle_output_frame(struct output_state *output, struct timespec *ts) {
@ -42,74 +54,15 @@ static void handle_output_frame(struct output_state *output, struct timespec *ts
wlr_output_swap_buffers(wlr_output);
}
static void handle_pointer_motion(struct pointer_state *pstate,
double d_x, double d_y) {
struct sample_state *state = pstate->compositor->data;
state->cur_x += d_x;
state->cur_y += d_y;
struct wlr_xcursor_image *image = state->cursor->images[0];
struct output_state *output;
wl_list_for_each(output, &pstate->compositor->outputs, link) {
wlr_output_move_cursor(output->output,
state->cur_x - image->hotspot_x,
state->cur_y - image->hotspot_y);
}
}
static void handle_pointer_motion_absolute(struct pointer_state *pstate,
double x, double y) {
struct sample_state *state = pstate->compositor->data;
state->cur_x = x;
state->cur_y = y;
struct wlr_xcursor_image *image = state->cursor->images[0];
struct output_state *output;
wl_list_for_each(output, &pstate->compositor->outputs, link) {
wlr_output_move_cursor(output->output,
state->cur_x - image->hotspot_x,
state->cur_y - image->hotspot_y);
}
}
static void handle_pointer_button(struct pointer_state *pstate,
uint32_t button, enum wlr_button_state state) {
struct sample_state *sample = pstate->compositor->data;
float (*color)[4];
if (state == WLR_BUTTON_RELEASED) {
color = &sample->default_color;
} else {
float red[4] = { 0.25f, 0.25f, 0.25f, 1 };
red[button % 3] = 1;
color = &red;
}
memcpy(&sample->clear_color, color, sizeof(*color));
}
static void handle_pointer_axis(struct pointer_state *pstate,
enum wlr_axis_source source,
enum wlr_axis_orientation orientation,
double delta) {
struct sample_state *sample = pstate->compositor->data;
for (size_t i = 0; i < 3; ++i) {
sample->default_color[i] += delta > 0 ? -0.05f : 0.05f;
if (sample->default_color[i] > 1.0f) {
sample->default_color[i] = 1.0f;
}
if (sample->default_color[i] < 0.0f) {
sample->default_color[i] = 0.0f;
}
}
memcpy(&sample->clear_color, &sample->default_color,
sizeof(sample->clear_color));
}
static void handle_output_add(struct output_state *ostate) {
struct sample_state *state = ostate->compositor->data;
struct sample_state *sample = ostate->compositor->data;
struct wlr_output *wlr_output = ostate->output;
struct wlr_xcursor_image *image = state->cursor->images[0];
struct wlr_xcursor_image *image = sample->xcursor->images[0];
wlr_output_layout_destroy(sample->layout);
sample->layout = configure_layout(sample->config, &ostate->compositor->outputs);
wlr_cursor_attach_output_layout(sample->cursor, sample->layout);
if (!wlr_output_set_cursor(wlr_output, image->buffer,
image->width, image->width, image->height)) {
wlr_log(L_DEBUG, "Failed to set hardware cursor");
@ -120,34 +73,137 @@ static void handle_output_add(struct output_state *ostate) {
}
}
static void handle_output_remove(struct output_state *ostate) {
struct sample_state *sample = ostate->compositor->data;
wlr_output_layout_destroy(sample->layout);
sample->layout = configure_layout(sample->config, &ostate->compositor->outputs);
wlr_cursor_attach_output_layout(sample->cursor, sample->layout);
}
static void handle_output_resolution(struct compositor_state *state,
struct output_state *ostate) {
struct sample_state *sample = ostate->compositor->data;
wlr_output_layout_destroy(sample->layout);
sample->layout = configure_layout(sample->config, &ostate->compositor->outputs);
wlr_cursor_attach_output_layout(sample->cursor, sample->layout);
}
static void handle_input_add(struct compositor_state *state, struct
wlr_input_device *device) {
struct sample_state *sample = state->data;
// TODO handle other input devices
if (device->type == WLR_INPUT_DEVICE_POINTER) {
wlr_cursor_attach_input_device(sample->cursor, device);
}
}
static void handle_cursor_motion(struct wl_listener *listener, void *data) {
struct sample_state *sample = wl_container_of(listener, sample, cursor_motion);
struct wlr_event_pointer_motion *event = data;
wlr_cursor_move(sample->cursor, event->delta_x, event->delta_y);
}
static void handle_cursor_motion_absolute(struct wl_listener *listener, void *data) {
struct sample_state *sample = wl_container_of(listener, sample, cursor_motion_absolute);
struct wlr_event_pointer_motion_absolute *event = data;
sample->cur_x = event->x_mm;
sample->cur_y = event->y_mm;
struct wlr_xcursor_image *image = sample->xcursor->images[0];
struct output_state *output;
wl_list_for_each(output, &sample->compositor->outputs, link) {
wlr_output_move_cursor(output->output,
sample->cur_x - image->hotspot_x,
sample->cur_y - image->hotspot_y);
}
}
static void handle_cursor_button(struct wl_listener *listener, void *data) {
struct sample_state *sample = wl_container_of(listener, sample, cursor_button);
struct wlr_event_pointer_button *event = data;
float (*color)[4];
if (event->state == WLR_BUTTON_RELEASED) {
color = &sample->default_color;
memcpy(&sample->clear_color, color, sizeof(*color));
} else {
float red[4] = { 0.25f, 0.25f, 0.25f, 1 };
red[event->button % 3] = 1;
color = &red;
memcpy(&sample->clear_color, color, sizeof(*color));
}
}
static void handle_cursor_axis(struct wl_listener *listener, void *data) {
struct sample_state *sample = wl_container_of(listener, sample, cursor_axis);
struct wlr_event_pointer_axis *event = data;
for (size_t i = 0; i < 3; ++i) {
sample->default_color[i] += event->delta > 0 ? -0.05f : 0.05f;
if (sample->default_color[i] > 1.0f) {
sample->default_color[i] = 1.0f;
}
if (sample->default_color[i] < 0.0f) {
sample->default_color[i] = 0.0f;
}
}
memcpy(&sample->clear_color, &sample->default_color,
sizeof(sample->clear_color));
}
int main(int argc, char *argv[]) {
struct sample_state state = {
.default_color = { 0.25f, 0.25f, 0.25f, 1 },
.clear_color = { 0.25f, 0.25f, 0.25f, 1 }
};
state.config = parse_args(argc, argv);
state.cursor = wlr_cursor_init();
wl_signal_add(&state.cursor->events.motion, &state.cursor_motion);
state.cursor_motion.notify = handle_cursor_motion;
wl_signal_add(&state.cursor->events.motion_absolute, &state.cursor_motion_absolute);
state.cursor_motion_absolute.notify = handle_cursor_motion_absolute;
wl_signal_add(&state.cursor->events.button, &state.cursor_button);
state.cursor_button.notify = handle_cursor_button;
wl_signal_add(&state.cursor->events.axis, &state.cursor_axis);
state.cursor_axis.notify = handle_cursor_axis;
struct compositor_state compositor = { 0 };
compositor.data = &state;
compositor.output_add_cb = handle_output_add;
compositor.output_remove_cb = handle_output_remove;
compositor.output_resolution_cb = handle_output_resolution;
compositor.output_frame_cb = handle_output_frame;
compositor.pointer_motion_cb = handle_pointer_motion;
compositor.pointer_motion_absolute_cb = handle_pointer_motion_absolute;
compositor.pointer_button_cb = handle_pointer_button;
compositor.pointer_axis_cb = handle_pointer_axis;
compositor.input_add_cb = handle_input_add;
state.compositor = &compositor;
struct wlr_xcursor_theme *theme = wlr_xcursor_theme_load("default", 16);
if (!theme) {
wlr_log(L_ERROR, "Failed to load cursor theme");
return 1;
}
state.cursor = wlr_xcursor_theme_get_cursor(theme, "left_ptr");
if (!state.cursor) {
state.xcursor = wlr_xcursor_theme_get_cursor(theme, "left_ptr");
if (!state.xcursor) {
wlr_log(L_ERROR, "Failed to load left_ptr cursor");
return 1;
}
wlr_cursor_set_xcursor(state.cursor, state.xcursor);
compositor_init(&compositor);
wl_display_run(compositor.display);
compositor_fini(&compositor);
wlr_xcursor_theme_destroy(theme);
example_config_destroy(state.config);
wlr_cursor_destroy(state.cursor);
}

4
examples/shared.c
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@ -441,6 +441,10 @@ static void input_add_notify(struct wl_listener *listener, void *data) {
default:
break;
}
if (state->input_add_cb) {
state->input_add_cb(state, device);
}
}
static void keyboard_remove(struct wlr_input_device *device, struct compositor_state *state) {

2
examples/shared.h
View File

@ -93,6 +93,8 @@ struct tablet_pad_state {
};
struct compositor_state {
void (*input_add_cb)(struct compositor_state *compositor,
struct wlr_input_device *device);
void (*output_add_cb)(struct output_state *s);
void (*keyboard_add_cb)(struct keyboard_state *s);
void (*output_frame_cb)(struct output_state *s, struct timespec *ts);

81
include/wlr/types/wlr_cursor.h Normal file
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@ -0,0 +1,81 @@
#ifndef _WLR_TYPES_CURSOR_H
#define _WLR_TYPES_CURSOR_H
#include <wayland-server.h>
#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_output_layout.h>
#include <wlr/types/wlr_input_device.h>
#include <wlr/xcursor.h>
struct wlr_cursor_state;
//struct wlr_cursor_impl *;
struct wlr_cursor {
struct wlr_cursor_state *state;
//struct wlr_cursor_impl *impl;
int x, y;
struct {
struct wl_signal motion;
struct wl_signal motion_absolute;
struct wl_signal button;
struct wl_signal axis;
} events;
};
struct wlr_cursor *wlr_cursor_init();
void wlr_cursor_destroy(struct wlr_cursor *cur);
void wlr_cursor_set_xcursor(struct wlr_cursor *cur, struct wlr_xcursor *xcur);
void wlr_cursor_warp(struct wlr_cursor *cur, double x, double y);
void wlr_cursor_move(struct wlr_cursor *cur, double delta_x, double delta_y);
/**
* Attaches this input device to this cursor. The input device must be one of:
*
* - WLR_INPUT_DEVICE_POINTER
* - WLR_INPUT_DEVICE_TOUCH
* - WLR_INPUT_DEVICE_TABLET_TOOL
*/
void wlr_cursor_attach_input_device(struct wlr_cursor *cur,
struct wlr_input_device *dev);
void wlr_cursor_detach_input_device(struct wlr_cursor *cur,
struct wlr_input_device *dev);
/**
* Uses the given layout to establish the boundaries and movement semantics of
* this cursor. Cursors without an output layout allow infinite movement in any
* direction and do not support absolute input events.
*/
void wlr_cursor_attach_output_layout(struct wlr_cursor *cur,
struct wlr_output_layout *l);
/**
* Attaches this cursor to the given output, which must be among the outputs in
* the current output_layout for this cursor. This call is invalid for a cursor
* without an associated output layout.
*/
void wlr_cursor_map_to_output(struct wlr_cursor *cur, struct wlr_output *output);
/**
* Maps all input from a specific input device to a given output. The input
* device must be attached to this cursor and the output must be among the
* outputs in the attached output layout.
*/
void wlr_cursor_map_input_to_output(struct wlr_cursor *cur,
struct wlr_input_device *dev, struct wlr_output *output);
/**
* Maps this cursor to an arbitrary region on the associated wlr_output_layout.
*/
//void wlr_cursor_map_to_region(struct wlr_cursor *cur, struct wlr_geometry *geo);
/**
* Maps inputs from this input device to an arbitrary region on the associated
* wlr_output_layout.
*/
//void wlr_cursor_map_input_to_region(struct wlr_cursor *cur, struct wlr_input_device *dev, struct wlr_geometry *geo);
#endif

1
types/meson.build
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@ -6,6 +6,7 @@ lib_wlr_types = static_library('wlr_types', files(
'wlr_output.c',
'wlr_output_layout.c',
'wlr_pointer.c',
'wlr_cursor.c',
'wlr_region.c',
'wlr_seat.c',
'wlr_surface.c',

206
types/wlr_cursor.c Normal file
View File

@ -0,0 +1,206 @@
#include <wlr/types/wlr_cursor.h>
#include <stdlib.h>
#include <assert.h>
#include <wlr/util/log.h>
#include <wayland-server.h>
#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_output_layout.h>
#include <wlr/types/wlr_input_device.h>
struct wlr_cursor_device {
struct wlr_cursor *cursor;
struct wlr_input_device *device;
struct wl_list link;
struct wl_listener motion;
struct wl_listener motion_absolute;
struct wl_listener button;
struct wl_listener axis;
};
struct wlr_cursor_state {
struct wl_list devices;
struct wlr_output_layout *layout;
struct wlr_xcursor *xcursor;
};
struct wlr_cursor *wlr_cursor_init() {
struct wlr_cursor *cur = calloc(1, sizeof(struct wlr_cursor));
if (!cur) {
wlr_log(L_ERROR, "Failed to allocate wlr_cursor");
return NULL;
}
cur->state = calloc(1, sizeof(struct wlr_cursor_state));
if (!cur->state) {
wlr_log(L_ERROR, "Failed to allocate wlr_cursor_state");
return NULL;
}
wl_list_init(&cur->state->devices);
wl_signal_init(&cur->events.motion);
wl_signal_init(&cur->events.motion_absolute);
wl_signal_init(&cur->events.button);
wl_signal_init(&cur->events.axis);
cur->x = 100;
cur->y = 100;
return cur;
}
void wlr_cursor_destroy(struct wlr_cursor *cur) {
struct wlr_cursor_device *device;
wl_list_for_each(device, &cur->state->devices, link) {
wl_list_remove(&device->link);
free(device);
}
free(cur);
}
void wlr_cursor_set_xcursor(struct wlr_cursor *cur, struct wlr_xcursor *xcur) {
cur->state->xcursor = xcur;
}
void wlr_cursor_warp(struct wlr_cursor *cur, double x, double y) {
}
void wlr_cursor_move(struct wlr_cursor *cur, double delta_x, double delta_y) {
//struct wlr_output *current_output;
//current_output = wlr_output_layout_output_at(cur->state->layout, cur->x, cur->y);
// TODO handle no layout
assert(cur->state->layout);
// TODO handle layout boundaries
double new_x = cur->x + delta_x;
double new_y = cur->y + delta_y;
int hotspot_x = 0;
int hotspot_y = 0;
if (cur->state->xcursor && cur->state->xcursor->image_count > 0) {
struct wlr_xcursor_image *image = cur->state->xcursor->images[0];
hotspot_x = image->hotspot_x;
hotspot_y = image->hotspot_y;
}
struct wlr_output *output;
output = wlr_output_layout_output_at(cur->state->layout, new_x, new_y);
if (output) {
int output_x = new_x;
int output_y = new_y;
// TODO fix double to int rounding issues
wlr_output_layout_output_coords(cur->state->layout, output, &output_x, &output_y);
wlr_output_move_cursor(output, output_x - hotspot_x, output_y - hotspot_y);
cur->x = new_x;
cur->y = new_y;
}
}
static void handle_pointer_motion(struct wl_listener *listener, void *data) {
struct wlr_event_pointer_motion *event = data;
struct wlr_cursor_device *device = wl_container_of(listener, device, motion);
wl_signal_emit(&device->cursor->events.motion, event);
}
static void handle_pointer_motion_absolute(struct wl_listener *listener, void *data) {
struct wlr_event_pointer_motion_absolute *event = data;
struct wlr_cursor_device *device = wl_container_of(listener, device, motion_absolute);
wl_signal_emit(&device->cursor->events.motion_absolute, event);
}
static void handle_pointer_button(struct wl_listener *listener, void *data) {
struct wlr_event_pointer_button *event = data;
struct wlr_cursor_device *device = wl_container_of(listener, device, button);
wl_signal_emit(&device->cursor->events.button, event);
}
static void handle_pointer_axis(struct wl_listener *listener, void *data) {
struct wlr_event_pointer_axis *event = data;
struct wlr_cursor_device *device = wl_container_of(listener, device, axis);
wl_signal_emit(&device->cursor->events.axis, event);
}
void wlr_cursor_attach_input_device(struct wlr_cursor *cur,
struct wlr_input_device *dev) {
if (dev->type != WLR_INPUT_DEVICE_POINTER &&
dev->type != WLR_INPUT_DEVICE_TOUCH &&
dev->type != WLR_INPUT_DEVICE_TABLET_TOOL) {
wlr_log(L_ERROR, "only device types of pointer, touch or tablet tool are"
"supported");
return;
}
// TODO support other device types
if (dev->type != WLR_INPUT_DEVICE_POINTER) {
wlr_log(L_ERROR, "TODO: support touch and tablet tool devices");
return;
}
// make sure it is not already attached
struct wlr_cursor_device *_dev;
wl_list_for_each(_dev, &cur->state->devices, link) {
if (_dev->device == dev) {
return;
}
}
struct wlr_cursor_device *device = calloc(1, sizeof(struct wlr_cursor_device));
if (!device) {
wlr_log(L_ERROR, "Failed to allocate wlr_cursor_device");
return;
}
device->cursor = cur;
device->device = dev;
// listen to events
wl_signal_add(&dev->pointer->events.motion, &device->motion);
device->motion.notify = handle_pointer_motion;
wl_signal_add(&dev->pointer->events.motion_absolute, &device->motion_absolute);
device->motion_absolute.notify = handle_pointer_motion_absolute;
wl_signal_add(&dev->pointer->events.button, &device->button);
device->button.notify = handle_pointer_button;
wl_signal_add(&dev->pointer->events.axis, &device->axis);
device->axis.notify = handle_pointer_axis;
wl_list_insert(&cur->state->devices, &device->link);
}
void wlr_cursor_detach_input_device(struct wlr_cursor *cur,
struct wlr_input_device *dev) {
struct wlr_cursor_device *target_device = NULL, *_device = NULL;
wl_list_for_each(_device, &cur->state->devices, link) {
if (_device->device == dev) {
target_device = _device;
break;
}
}
if (target_device) {
wl_list_remove(&target_device->link);
free(target_device);
}
}
void wlr_cursor_attach_output_layout(struct wlr_cursor *cur,
struct wlr_output_layout *l) {
cur->state->layout = l;
}
void wlr_cursor_map_to_output(struct wlr_cursor *cur,
struct wlr_output *output) {
wlr_log(L_DEBUG, "TODO: map to output");
}
void wlr_cursor_map_input_to_output(struct wlr_cursor *cur,
struct wlr_input_device *dev, struct wlr_output *output) {
wlr_log(L_DEBUG, "TODO map input to output");
}