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wlroots-hyprland/rootston/cursor.c
Lars Hagström b181f793c3 Make pointer button release outside window still count down the button_count. 
When double-clicking a maximized window title, so that the windows size is restored and the mouse pointer ends up _outside_ the window it becomes impossible to move windows.
The reason is that the button_count variable is not counted down if the mouse button is released outside the window, so the button_count remains incremented even after the button is released.
This patch adds a call to wlr_seat_pointer_notify_button if the mouse button is released outside the window.
(I am a complete noob to wlroots, so be kind...)
2018-02-07 17:42:31 +01:00

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#define _XOPEN_SOURCE 700
#include <stdlib.h>
#include <math.h>
#ifdef __linux__
#include <linux/input-event-codes.h>
#elif __FreeBSD__
#include <dev/evdev/input-event-codes.h>
#endif
#include <wlr/types/wlr_xcursor_manager.h>
#include <wlr/util/log.h>
#include <wlr/util/edges.h>
#include "rootston/xcursor.h"
#include "rootston/cursor.h"
struct roots_cursor *roots_cursor_create(struct roots_seat *seat) {
struct roots_cursor *cursor = calloc(1, sizeof(struct roots_cursor));
if (!cursor) {
return NULL;
}
cursor->cursor = wlr_cursor_create();
if (!cursor->cursor) {
free(cursor);
return NULL;
}
cursor->default_xcursor = ROOTS_XCURSOR_DEFAULT;
return cursor;
}
void roots_cursor_destroy(struct roots_cursor *cursor) {
// TODO
}
static void seat_view_deco_motion(struct roots_seat_view *view, double deco_sx, double deco_sy) {
struct roots_cursor *cursor = view->seat->cursor;
double sx = deco_sx;
double sy = deco_sy;
if (view->has_button_grab) {
sx = view->grab_sx;
sy = view->grab_sy;
}
enum roots_deco_part parts = view_get_deco_part(view->view, sx, sy);
bool is_titlebar = (parts & ROOTS_DECO_PART_TITLEBAR);
uint32_t edges = 0;
if (parts & ROOTS_DECO_PART_LEFT_BORDER) {
edges |= WLR_EDGE_LEFT;
} else if (parts & ROOTS_DECO_PART_RIGHT_BORDER) {
edges |= WLR_EDGE_RIGHT;
} else if (parts & ROOTS_DECO_PART_BOTTOM_BORDER) {
edges |= WLR_EDGE_BOTTOM;
} else if (parts & ROOTS_DECO_PART_TOP_BORDER) {
edges |= WLR_EDGE_TOP;
}
if (view->has_button_grab) {
if (is_titlebar) {
roots_seat_begin_move(view->seat, view->view);
} else if (edges) {
roots_seat_begin_resize(view->seat, view->view, edges);
}
view->has_button_grab = false;
} else {
if (is_titlebar) {
wlr_xcursor_manager_set_cursor_image(cursor->xcursor_manager,
cursor->default_xcursor, cursor->cursor);
} else if (edges) {
const char *resize_name = wlr_xcursor_get_resize_name(edges);
wlr_xcursor_manager_set_cursor_image(cursor->xcursor_manager,
resize_name, cursor->cursor);
}
}
}
static void seat_view_deco_leave(struct roots_seat_view *view) {
struct roots_cursor *cursor = view->seat->cursor;
wlr_xcursor_manager_set_cursor_image(cursor->xcursor_manager,
cursor->default_xcursor, cursor->cursor);
view->has_button_grab = false;
}
static void seat_view_deco_button(struct roots_seat_view *view, double sx,
double sy, uint32_t button, uint32_t state) {
if (button == BTN_LEFT && state == WLR_BUTTON_PRESSED) {
view->has_button_grab = true;
view->grab_sx = sx;
view->grab_sy = sy;
} else {
view->has_button_grab = false;
}
enum roots_deco_part parts = view_get_deco_part(view->view, sx, sy);
if (state == WLR_BUTTON_RELEASED && (parts & ROOTS_DECO_PART_TITLEBAR)) {
struct roots_cursor *cursor = view->seat->cursor;
wlr_xcursor_manager_set_cursor_image(cursor->xcursor_manager,
cursor->default_xcursor, cursor->cursor);
}
}
static void roots_cursor_update_position(struct roots_cursor *cursor,
uint32_t time) {
struct roots_desktop *desktop = cursor->seat->input->server->desktop;
struct roots_seat *seat = cursor->seat;
struct roots_view *view;
struct wlr_surface *surface = NULL;
double sx, sy;
switch (cursor->mode) {
case ROOTS_CURSOR_PASSTHROUGH:
view = desktop_view_at(desktop, cursor->cursor->x, cursor->cursor->y,
&surface, &sx, &sy);
struct roots_seat_view *seat_view =
roots_seat_view_from_view(seat, view);
if (cursor->pointer_view && (surface || seat_view != cursor->pointer_view)) {
seat_view_deco_leave(cursor->pointer_view);
cursor->pointer_view = NULL;
}
bool set_compositor_cursor = !view && !surface && cursor->cursor_client;
if (view && surface) {
struct wl_client *view_client =
wl_resource_get_client(view->wlr_surface->resource);
set_compositor_cursor = view_client != cursor->cursor_client;
}
if (set_compositor_cursor) {
wlr_xcursor_manager_set_cursor_image(cursor->xcursor_manager,
cursor->default_xcursor, cursor->cursor);
cursor->cursor_client = NULL;
}
if (view && !surface) {
if (seat_view) {
cursor->pointer_view = seat_view;
seat_view_deco_motion(seat_view, sx, sy);
}
} if (view && surface) {
// motion over a view surface
wlr_seat_pointer_notify_enter(seat->seat, surface, sx, sy);
wlr_seat_pointer_notify_motion(seat->seat, time, sx, sy);
} else {
wlr_seat_pointer_clear_focus(seat->seat);
}
break;
case ROOTS_CURSOR_MOVE:
view = roots_seat_get_focus(seat);
if (view != NULL) {
double dx = cursor->cursor->x - cursor->offs_x;
double dy = cursor->cursor->y - cursor->offs_y;
view_move(view, cursor->view_x + dx,
cursor->view_y + dy);
}
break;
case ROOTS_CURSOR_RESIZE:
view = roots_seat_get_focus(seat);
if (view != NULL) {
double dx = cursor->cursor->x - cursor->offs_x;
double dy = cursor->cursor->y - cursor->offs_y;
double x = view->x;
double y = view->y;
int width = cursor->view_width;
int height = cursor->view_height;
if (cursor->resize_edges & WLR_EDGE_TOP) {
y = cursor->view_y + dy;
height -= dy;
if (height < 1) {
y += height;
}
} else if (cursor->resize_edges & WLR_EDGE_BOTTOM) {
height += dy;
}
if (cursor->resize_edges & WLR_EDGE_LEFT) {
x = cursor->view_x + dx;
width -= dx;
if (width < 1) {
x += width;
}
} else if (cursor->resize_edges & WLR_EDGE_RIGHT) {
width += dx;
}
if (width < 1) {
width = 1;
}
if (height < 1) {
height = 1;
}
view_move_resize(view, x, y, width, height);
}
break;
case ROOTS_CURSOR_ROTATE:
view = roots_seat_get_focus(seat);
if (view != NULL) {
int ox = view->x + view->wlr_surface->current->width/2,
oy = view->y + view->wlr_surface->current->height/2;
int ux = cursor->offs_x - ox,
uy = cursor->offs_y - oy;
int vx = cursor->cursor->x - ox,
vy = cursor->cursor->y - oy;
float angle = atan2(vx*uy - vy*ux, vx*ux + vy*uy);
int steps = 12;
angle = round(angle/M_PI*steps) / (steps/M_PI);
view->rotation = cursor->view_rotation + angle;
}
break;
}
}
static void roots_cursor_press_button(struct roots_cursor *cursor,
struct wlr_input_device *device, uint32_t time, uint32_t button,
uint32_t state, double lx, double ly) {
struct roots_seat *seat = cursor->seat;
struct roots_desktop *desktop = seat->input->server->desktop;
bool is_touch = device->type == WLR_INPUT_DEVICE_TOUCH;
struct wlr_surface *surface = NULL;
double sx, sy;
struct roots_view *view =
desktop_view_at(desktop, lx, ly, &surface, &sx, &sy);
if (state == WLR_BUTTON_PRESSED &&
view &&
roots_seat_has_meta_pressed(seat)) {
roots_seat_set_focus(seat, view);
uint32_t edges;
switch (button) {
case BTN_LEFT:
roots_seat_begin_move(seat, view);
break;
case BTN_RIGHT:
edges = 0;
if (sx < view->wlr_surface->current->width/2) {
edges |= WLR_EDGE_LEFT;
} else {
edges |= WLR_EDGE_RIGHT;
}
if (sy < view->wlr_surface->current->height/2) {
edges |= WLR_EDGE_TOP;
} else {
edges |= WLR_EDGE_BOTTOM;
}
roots_seat_begin_resize(seat, view, edges);
break;
case BTN_MIDDLE:
roots_seat_begin_rotate(seat, view);
break;
}
} else {
if (view && !surface) {
if (cursor->pointer_view) {
seat_view_deco_button(cursor->pointer_view, sx, sy, button, state);
}
}
if (state == WLR_BUTTON_RELEASED &&
cursor->mode != ROOTS_CURSOR_PASSTHROUGH) {
cursor->mode = ROOTS_CURSOR_PASSTHROUGH;
}
switch (state) {
case WLR_BUTTON_RELEASED:
if (!is_touch) {
roots_cursor_update_position(cursor, time);
}
break;
case WLR_BUTTON_PRESSED:
roots_seat_set_focus(seat, view);
break;
}
}
if (!is_touch) {
wlr_seat_pointer_notify_button(seat->seat, time, button, state);
}
}
void roots_cursor_handle_motion(struct roots_cursor *cursor,
struct wlr_event_pointer_motion *event) {
wlr_cursor_move(cursor->cursor, event->device,
event->delta_x, event->delta_y);
roots_cursor_update_position(cursor, event->time_msec);
}
void roots_cursor_handle_motion_absolute(struct roots_cursor *cursor,
struct wlr_event_pointer_motion_absolute *event) {
wlr_cursor_warp_absolute(cursor->cursor, event->device,
event->x_mm / event->width_mm, event->y_mm / event->height_mm);
roots_cursor_update_position(cursor, event->time_msec);
}
void roots_cursor_handle_button(struct roots_cursor *cursor,
struct wlr_event_pointer_button *event) {
roots_cursor_press_button(cursor, event->device, event->time_msec,
event->button, event->state, cursor->cursor->x, cursor->cursor->y);
}
void roots_cursor_handle_axis(struct roots_cursor *cursor,
struct wlr_event_pointer_axis *event) {
wlr_seat_pointer_notify_axis(cursor->seat->seat, event->time_msec,
event->orientation, event->delta);
}
void roots_cursor_handle_touch_down(struct roots_cursor *cursor,
struct wlr_event_touch_down *event) {
struct roots_desktop *desktop = cursor->seat->input->server->desktop;
struct wlr_surface *surface = NULL;
double lx, ly;
bool result =
wlr_cursor_absolute_to_layout_coords(cursor->cursor,
event->device, event->x_mm, event->y_mm, event->width_mm,
event->height_mm, &lx, &ly);
if (!result) {
return;
}
double sx, sy;
desktop_view_at(desktop, lx, ly, &surface, &sx, &sy);
uint32_t serial = 0;
if (surface) {
serial = wlr_seat_touch_notify_down(cursor->seat->seat, surface,
event->time_msec, event->touch_id, sx, sy);
}
if (serial && wlr_seat_touch_num_points(cursor->seat->seat) == 1) {
cursor->seat->touch_id = event->touch_id;
cursor->seat->touch_x = lx;
cursor->seat->touch_y = ly;
roots_cursor_press_button(cursor, event->device, event->time_msec,
BTN_LEFT, 1, lx, ly);
}
}
void roots_cursor_handle_touch_up(struct roots_cursor *cursor,
struct wlr_event_touch_up *event) {
struct wlr_touch_point *point =
wlr_seat_touch_get_point(cursor->seat->seat, event->touch_id);
if (!point) {
return;
}
if (wlr_seat_touch_num_points(cursor->seat->seat) == 1) {
roots_cursor_press_button(cursor, event->device, event->time_msec,
BTN_LEFT, 0, cursor->seat->touch_x, cursor->seat->touch_y);
}
wlr_seat_touch_notify_up(cursor->seat->seat, event->time_msec,
event->touch_id);
}
void roots_cursor_handle_touch_motion(struct roots_cursor *cursor,
struct wlr_event_touch_motion *event) {
struct roots_desktop *desktop = cursor->seat->input->server->desktop;
struct wlr_touch_point *point =
wlr_seat_touch_get_point(cursor->seat->seat, event->touch_id);
if (!point) {
return;
}
struct wlr_surface *surface = NULL;
double lx, ly;
bool result =
wlr_cursor_absolute_to_layout_coords(cursor->cursor,
event->device, event->x_mm, event->y_mm, event->width_mm,
event->height_mm, &lx, &ly);
if (!result) {
return;
}
double sx, sy;
desktop_view_at(desktop, lx, ly, &surface, &sx, &sy);
if (surface) {
wlr_seat_touch_point_focus(cursor->seat->seat, surface,
event->time_msec, event->touch_id, sx, sy);
wlr_seat_touch_notify_motion(cursor->seat->seat, event->time_msec,
event->touch_id, sx, sy);
} else {
wlr_seat_touch_point_clear_focus(cursor->seat->seat, event->time_msec,
event->touch_id);
}
if (event->touch_id == cursor->seat->touch_id) {
cursor->seat->touch_x = lx;
cursor->seat->touch_y = ly;
}
}
void roots_cursor_handle_tool_axis(struct roots_cursor *cursor,
struct wlr_event_tablet_tool_axis *event) {
if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_X) &&
(event->updated_axes & WLR_TABLET_TOOL_AXIS_Y)) {
wlr_cursor_warp_absolute(cursor->cursor, event->device,
event->x_mm / event->width_mm, event->y_mm / event->height_mm);
roots_cursor_update_position(cursor, event->time_msec);
} else if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_X)) {
wlr_cursor_warp_absolute(cursor->cursor, event->device,
event->x_mm / event->width_mm, -1);
roots_cursor_update_position(cursor, event->time_msec);
} else if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_Y)) {
wlr_cursor_warp_absolute(cursor->cursor, event->device,
-1, event->y_mm / event->height_mm);
roots_cursor_update_position(cursor, event->time_msec);
}
}
void roots_cursor_handle_tool_tip(struct roots_cursor *cursor,
struct wlr_event_tablet_tool_tip *event) {
roots_cursor_press_button(cursor, event->device,
event->time_msec, BTN_LEFT, event->state, cursor->cursor->x,
cursor->cursor->y);
}
void roots_cursor_handle_request_set_cursor(struct roots_cursor *cursor,
struct wlr_seat_pointer_request_set_cursor_event *event) {
struct wlr_surface *focused_surface =
event->seat_client->seat->pointer_state.focused_surface;
bool has_focused =
focused_surface != NULL && focused_surface->resource != NULL;
struct wl_client *focused_client = NULL;
if (has_focused) {
focused_client = wl_resource_get_client(focused_surface->resource);
}
if (event->seat_client->client != focused_client ||
cursor->mode != ROOTS_CURSOR_PASSTHROUGH) {
wlr_log(L_DEBUG, "Denying request to set cursor from unfocused client");
return;
}
wlr_log(L_DEBUG, "Setting client cursor");
wlr_cursor_set_surface(cursor->cursor, event->surface, event->hotspot_x,
event->hotspot_y);
cursor->cursor_client = event->seat_client->client;
}
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