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Add cursor.c

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This commit is contained in:
Johan Malm 2020-05-29 21:36:12 +01:00
parent 3b7e2c9e09
commit 40d3e1b175
4 changed files with 228 additions and 211 deletions
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227
src/cursor.c Normal file
View file

@ -0,0 +1,227 @@
#include "labwc.h"
static void process_cursor_move(struct server *server, uint32_t time)
{
/* Move the grabbed view to the new position. */
double dx = server->cursor->x - server->grab_x;
double dy = server->cursor->y - server->grab_y;
server->grabbed_view->x = server->grab_box.x + dx;
server->grabbed_view->y = server->grab_box.y + dy;
if (server->grabbed_view->type != LAB_XWAYLAND_VIEW)
return;
struct view *view = server->grabbed_view;
wlr_xwayland_surface_configure(view->xwayland_surface, view->x, view->y,
view->xwayland_surface->width,
view->xwayland_surface->height);
}
#define MIN_VIEW_WIDTH (100)
#define MIN_VIEW_HEIGHT (60)
static void process_cursor_resize(struct server *server, uint32_t time)
{
/*
* TODO: Wait for the client to prepare a buffer at the new size, then
* commit any movement that was prepared.
*/
double dx = server->cursor->x - server->grab_x;
double dy = server->cursor->y - server->grab_y;
struct view *view = server->grabbed_view;
struct wlr_box new_view_geo = view_geometry(view);
if (server->resize_edges & WLR_EDGE_TOP) {
new_view_geo.y = server->grab_box.y + dy;
new_view_geo.height = server->grab_box.height - dy;
} else if (server->resize_edges & WLR_EDGE_BOTTOM) {
new_view_geo.height = server->grab_box.height + dy;
}
if (server->resize_edges & WLR_EDGE_LEFT) {
new_view_geo.x = server->grab_box.x + dx;
new_view_geo.width = server->grab_box.width - dx;
} else if (server->resize_edges & WLR_EDGE_RIGHT) {
new_view_geo.width = server->grab_box.width + dx;
}
if ((new_view_geo.height < MIN_VIEW_HEIGHT) ||
(new_view_geo.width < MIN_VIEW_WIDTH))
return;
/* Move */
view->x = new_view_geo.x;
view->y = new_view_geo.y;
/* Resize */
view_resize(view, new_view_geo);
}
static void process_cursor_motion(struct server *server, uint32_t time)
{
/* If the mode is non-passthrough, delegate to those functions. */
if (server->cursor_mode == TINYWL_CURSOR_MOVE) {
process_cursor_move(server, time);
return;
} else if (server->cursor_mode == TINYWL_CURSOR_RESIZE) {
process_cursor_resize(server, time);
return;
}
/* Otherwise, find the view under the pointer and send the event along.
*/
double sx, sy;
struct wlr_seat *seat = server->seat;
struct wlr_surface *surface = NULL;
int view_area;
struct view *view = view_at(server, server->cursor->x,
server->cursor->y, &surface, &sx, &sy,
&view_area);
if (!view) {
/* If there's no view under the cursor, set the cursor image to
* a default. This is what makes the cursor image appear when
* you move it around the screen, not over any views. */
wlr_xcursor_manager_set_cursor_image(
server->cursor_mgr, "left_ptr", server->cursor);
}
switch (view_area) {
case LAB_DECO_PART_TOP:
wlr_xcursor_manager_set_cursor_image(
server->cursor_mgr, "left_ptr", server->cursor);
break;
case LAB_DECO_PART_LEFT:
wlr_xcursor_manager_set_cursor_image(
server->cursor_mgr, "left_side", server->cursor);
break;
}
if (surface) {
bool focus_changed = seat->pointer_state.focused_surface !=
surface;
/*
* "Enter" the surface if necessary. This lets the client know
* that the cursor has entered one of its surfaces.
*
* Note that this gives the surface "pointer focus", which is
* distinct from keyboard focus. You get pointer focus by moving
* the pointer over a window.
*/
wlr_seat_pointer_notify_enter(seat, surface, sx, sy);
if (!focus_changed) {
/* The enter event contains coordinates, so we only need
* to notify on motion if the focus did not change. */
wlr_seat_pointer_notify_motion(seat, time, sx, sy);
}
} else {
/* Clear pointer focus so future button events and such are not
* sent to the last client to have the cursor over it. */
wlr_seat_pointer_clear_focus(seat);
}
}
void server_cursor_motion(struct wl_listener *listener, void *data)
{
/*
* This event is forwarded by the cursor when a pointer emits a
* _relative_ pointer motion event (i.e. a delta)
*/
struct server *server =
wl_container_of(listener, server, cursor_motion);
struct wlr_event_pointer_motion *event = data;
/*
* The cursor doesn't move unless we tell it to. The cursor
* automatically handles constraining the motion to the output layout,
* as well as any special configuration applied for the specific input
* device which generated the event. You can pass NULL for the device
* if you want to move the cursor around without any input.
*/
wlr_cursor_move(server->cursor, event->device, event->delta_x,
event->delta_y);
process_cursor_motion(server, event->time_msec);
}
void server_cursor_motion_absolute(struct wl_listener *listener, void *data)
{
/*
* This event is forwarded by the cursor when a pointer emits an
* _absolute_ motion event, from 0..1 on each axis. This happens, for
* example, when wlroots is running under a Wayland window rather than
* KMS+DRM, and you move the mouse over the window. You could enter the
* window from any edge, so we have to warp the mouse there. There is
* also some hardware which emits these events.
*/
struct server *server =
wl_container_of(listener, server, cursor_motion_absolute);
struct wlr_event_pointer_motion_absolute *event = data;
wlr_cursor_warp_absolute(server->cursor, event->device, event->x,
event->y);
process_cursor_motion(server, event->time_msec);
}
void server_cursor_button(struct wl_listener *listener, void *data)
{
/*
* This event is forwarded by the cursor when a pointer emits a button
* event.
*/
struct server *server =
wl_container_of(listener, server, cursor_button);
struct wlr_event_pointer_button *event = data;
/*
* Notify the client with pointer focus that a button press has
* occurred.
*/
wlr_seat_pointer_notify_button(server->seat, event->time_msec,
event->button, event->state);
double sx, sy;
struct wlr_surface *surface;
int view_area;
struct view *view = view_at(server, server->cursor->x,
server->cursor->y, &surface, &sx, &sy,
&view_area);
if (event->state == WLR_BUTTON_RELEASED) {
/* Exit interactive move/resize mode. */
server->cursor_mode = TINYWL_CURSOR_PASSTHROUGH;
} else {
/* Focus that client if the button was _pressed_ */
view_focus(view);
switch (view_area) {
case LAB_DECO_PART_TOP:
interactive_begin(view, TINYWL_CURSOR_MOVE, 0);
break;
case LAB_DECO_PART_LEFT:
interactive_begin(view, TINYWL_CURSOR_RESIZE,
WLR_EDGE_LEFT);
break;
}
}
}
void server_cursor_axis(struct wl_listener *listener, void *data)
{
/*
* This event is forwarded by the cursor when a pointer emits an axis
* event, for example when you move the scroll wheel.
*/
struct server *server = wl_container_of(listener, server, cursor_axis);
struct wlr_event_pointer_axis *event = data;
/* Notify the client with pointer focus of the axis event. */
wlr_seat_pointer_notify_axis(server->seat, event->time_msec,
event->orientation, event->delta,
event->delta_discrete, event->source);
}
void server_cursor_frame(struct wl_listener *listener, void *data)
{
/*
* This event is forwarded by the cursor when a pointer emits an frame
* event. Frame events are sent after regular pointer events to group
* multiple events together. For instance, two axis events may happen
* at the same time, in which case a frame event won't be sent in
* between.
*/
struct server *server = wl_container_of(listener, server, cursor_frame);
/* Notify the client with pointer focus of the frame event. */
wlr_seat_pointer_notify_frame(server->seat);
}

1
src/interactive.c
View file

@ -17,4 +17,3 @@ void interactive_begin(struct view *view, enum cursor_mode mode, uint32_t edges)
server->grab_box = view_geometry(view);
server->resize_edges = edges;
}

1
src/meson.build
View file

@ -1,4 +1,5 @@
labwc_sources = files(
'cursor.c',
'deco.c',
'interactive.c',
'main.c',

210
src/server.c
View file

@ -1,8 +1,5 @@
#include "labwc.h"
#define MIN_VIEW_WIDTH (100)
#define MIN_VIEW_HEIGHT (60)
static void keyboard_handle_modifiers(struct wl_listener *listener, void *data)
{
/*
@ -212,213 +209,6 @@ void seat_request_set_selection(struct wl_listener *listener, void *data)
wlr_seat_set_selection(server->seat, event->source, event->serial);
}
static void process_cursor_move(struct server *server, uint32_t time)
{
/* Move the grabbed view to the new position. */
double dx = server->cursor->x - server->grab_x;
double dy = server->cursor->y - server->grab_y;
server->grabbed_view->x = server->grab_box.x + dx;
server->grabbed_view->y = server->grab_box.y + dy;
if (server->grabbed_view->type != LAB_XWAYLAND_VIEW)
return;
struct view *view = server->grabbed_view;
wlr_xwayland_surface_configure(view->xwayland_surface, view->x, view->y,
view->xwayland_surface->width,
view->xwayland_surface->height);
}
static void process_cursor_resize(struct server *server, uint32_t time)
{
/*
* TODO: Wait for the client to prepare a buffer at the new size, then
* commit any movement that was prepared.
*/
double dx = server->cursor->x - server->grab_x;
double dy = server->cursor->y - server->grab_y;
struct view *view = server->grabbed_view;
struct wlr_box new_view_geo = view_geometry(view);
if (server->resize_edges & WLR_EDGE_TOP) {
new_view_geo.y = server->grab_box.y + dy;
new_view_geo.height = server->grab_box.height - dy;
} else if (server->resize_edges & WLR_EDGE_BOTTOM) {
new_view_geo.height = server->grab_box.height + dy;
}
if (server->resize_edges & WLR_EDGE_LEFT) {
new_view_geo.x = server->grab_box.x + dx;
new_view_geo.width = server->grab_box.width - dx;
} else if (server->resize_edges & WLR_EDGE_RIGHT) {
new_view_geo.width = server->grab_box.width + dx;
}
if ((new_view_geo.height < MIN_VIEW_HEIGHT) ||
(new_view_geo.width < MIN_VIEW_WIDTH))
return;
/* Move */
view->x = new_view_geo.x;
view->y = new_view_geo.y;
/* Resize */
view_resize(view, new_view_geo);
}
static void process_cursor_motion(struct server *server, uint32_t time)
{
/* If the mode is non-passthrough, delegate to those functions. */
if (server->cursor_mode == TINYWL_CURSOR_MOVE) {
process_cursor_move(server, time);
return;
} else if (server->cursor_mode == TINYWL_CURSOR_RESIZE) {
process_cursor_resize(server, time);
return;
}
/* Otherwise, find the view under the pointer and send the event along.
*/
double sx, sy;
struct wlr_seat *seat = server->seat;
struct wlr_surface *surface = NULL;
int view_area;
struct view *view = view_at(server, server->cursor->x,
server->cursor->y, &surface, &sx, &sy,
&view_area);
if (!view) {
/* If there's no view under the cursor, set the cursor image to
* a default. This is what makes the cursor image appear when
* you move it around the screen, not over any views. */
wlr_xcursor_manager_set_cursor_image(
server->cursor_mgr, "left_ptr", server->cursor);
}
switch (view_area) {
case LAB_DECO_PART_TOP:
wlr_xcursor_manager_set_cursor_image(
server->cursor_mgr, "left_ptr", server->cursor);
break;
case LAB_DECO_PART_LEFT:
wlr_xcursor_manager_set_cursor_image(
server->cursor_mgr, "left_side", server->cursor);
break;
}
if (surface) {
bool focus_changed = seat->pointer_state.focused_surface !=
surface;
/*
* "Enter" the surface if necessary. This lets the client know
* that the cursor has entered one of its surfaces.
*
* Note that this gives the surface "pointer focus", which is
* distinct from keyboard focus. You get pointer focus by moving
* the pointer over a window.
*/
wlr_seat_pointer_notify_enter(seat, surface, sx, sy);
if (!focus_changed) {
/* The enter event contains coordinates, so we only need
* to notify on motion if the focus did not change. */
wlr_seat_pointer_notify_motion(seat, time, sx, sy);
}
} else {
/* Clear pointer focus so future button events and such are not
* sent to the last client to have the cursor over it. */
wlr_seat_pointer_clear_focus(seat);
}
}
void server_cursor_motion(struct wl_listener *listener, void *data)
{
/* This event is forwarded by the cursor when a pointer emits a
* _relative_ pointer motion event (i.e. a delta) */
struct server *server =
wl_container_of(listener, server, cursor_motion);
struct wlr_event_pointer_motion *event = data;
/* The cursor doesn't move unless we tell it to. The cursor
* automatically handles constraining the motion to the output layout,
* as well as any special configuration applied for the specific input
* device which generated the event. You can pass NULL for the device if
* you want to move the cursor around without any input. */
wlr_cursor_move(server->cursor, event->device, event->delta_x,
event->delta_y);
process_cursor_motion(server, event->time_msec);
}
void server_cursor_motion_absolute(struct wl_listener *listener, void *data)
{
/* This event is forwarded by the cursor when a pointer emits an
* _absolute_ motion event, from 0..1 on each axis. This happens, for
* example, when wlroots is running under a Wayland window rather than
* KMS+DRM, and you move the mouse over the window. You could enter the
* window from any edge, so we have to warp the mouse there. There is
* also some hardware which emits these events. */
struct server *server =
wl_container_of(listener, server, cursor_motion_absolute);
struct wlr_event_pointer_motion_absolute *event = data;
wlr_cursor_warp_absolute(server->cursor, event->device, event->x,
event->y);
process_cursor_motion(server, event->time_msec);
}
void server_cursor_button(struct wl_listener *listener, void *data)
{
/* This event is forwarded by the cursor when a pointer emits a button
* event. */
struct server *server =
wl_container_of(listener, server, cursor_button);
struct wlr_event_pointer_button *event = data;
/* Notify the client with pointer focus that a button press has occurred
*/
wlr_seat_pointer_notify_button(server->seat, event->time_msec,
event->button, event->state);
double sx, sy;
struct wlr_surface *surface;
int view_area;
struct view *view = view_at(server, server->cursor->x,
server->cursor->y, &surface, &sx, &sy,
&view_area);
if (event->state == WLR_BUTTON_RELEASED) {
/* If you released any buttons, we exit interactive move/resize
* mode. */
server->cursor_mode = TINYWL_CURSOR_PASSTHROUGH;
} else {
/* Focus that client if the button was _pressed_ */
view_focus(view);
switch (view_area) {
case LAB_DECO_PART_TOP:
interactive_begin(view, TINYWL_CURSOR_MOVE, 0);
break;
case LAB_DECO_PART_LEFT:
interactive_begin(view, TINYWL_CURSOR_RESIZE,
WLR_EDGE_LEFT);
break;
}
}
}
void server_cursor_axis(struct wl_listener *listener, void *data)
{
/* This event is forwarded by the cursor when a pointer emits an axis
* event, for example when you move the scroll wheel. */
struct server *server = wl_container_of(listener, server, cursor_axis);
struct wlr_event_pointer_axis *event = data;
/* Notify the client with pointer focus of the axis event. */
wlr_seat_pointer_notify_axis(server->seat, event->time_msec,
event->orientation, event->delta,
event->delta_discrete, event->source);
}
void server_cursor_frame(struct wl_listener *listener, void *data)
{
/* This event is forwarded by the cursor when a pointer emits an frame
* event. Frame events are sent after regular pointer events to group
* multiple events together. For instance, two axis events may happen at
* the
* same time, in which case a frame event won't be sent in between. */
struct server *server = wl_container_of(listener, server, cursor_frame);
/* Notify the client with pointer focus of the frame event. */
wlr_seat_pointer_notify_frame(server->seat);
}
void server_new_output(struct wl_listener *listener, void *data)
{
/* This event is rasied by the backend when a new output (aka a display