mirror of
https://github.com/NickHu/sway
synced 2024-12-27 21:58:11 +01:00
8441711990
This adds an axis handler to seatop_down so that it is possible to manually scroll while having a mouse button down. This is mainly useful for selecting text. Some applications may not automatically scroll when the cursor is near the edge of the application or the user may just prefer manually scrolling for more control over the scrolling speed.
86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
#define _POSIX_C_SOURCE 200809L
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#include <float.h>
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#include <wlr/types/wlr_cursor.h>
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#include "sway/input/cursor.h"
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#include "sway/input/seat.h"
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#include "sway/tree/view.h"
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#include "log.h"
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struct seatop_down_event {
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struct sway_container *con;
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double ref_lx, ref_ly; // cursor's x/y at start of op
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double ref_con_lx, ref_con_ly; // container's x/y at start of op
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};
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static void handle_axis(struct sway_seat *seat,
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struct wlr_event_pointer_axis *event) {
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struct sway_input_device *input_device =
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event->device ? event->device->data : NULL;
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struct input_config *ic =
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input_device ? input_device_get_config(input_device) : NULL;
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float scroll_factor =
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(ic == NULL || ic->scroll_factor == FLT_MIN) ? 1.0f : ic->scroll_factor;
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wlr_seat_pointer_notify_axis(seat->wlr_seat, event->time_msec,
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event->orientation, scroll_factor * event->delta,
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round(scroll_factor * event->delta_discrete), event->source);
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}
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static void handle_button(struct sway_seat *seat, uint32_t time_msec,
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struct wlr_input_device *device, uint32_t button,
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enum wlr_button_state state) {
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seat_pointer_notify_button(seat, time_msec, button, state);
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if (seat->cursor->pressed_button_count == 0) {
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seatop_begin_default(seat);
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}
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}
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static void handle_motion(struct sway_seat *seat, uint32_t time_msec,
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double dx, double dy) {
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struct seatop_down_event *e = seat->seatop_data;
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struct sway_container *con = e->con;
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if (seat_is_input_allowed(seat, con->view->surface)) {
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double moved_x = seat->cursor->cursor->x - e->ref_lx;
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double moved_y = seat->cursor->cursor->y - e->ref_ly;
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double sx = e->ref_con_lx + moved_x;
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double sy = e->ref_con_ly + moved_y;
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wlr_seat_pointer_notify_motion(seat->wlr_seat, time_msec, sx, sy);
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}
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}
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static void handle_unref(struct sway_seat *seat, struct sway_container *con) {
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struct seatop_down_event *e = seat->seatop_data;
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if (e->con == con) {
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seatop_begin_default(seat);
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}
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}
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static const struct sway_seatop_impl seatop_impl = {
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.axis = handle_axis,
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.button = handle_button,
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.motion = handle_motion,
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.unref = handle_unref,
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.allow_set_cursor = true,
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};
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void seatop_begin_down(struct sway_seat *seat, struct sway_container *con,
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uint32_t time_msec, int sx, int sy) {
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seatop_end(seat);
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struct seatop_down_event *e =
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calloc(1, sizeof(struct seatop_down_event));
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if (!e) {
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return;
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}
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e->con = con;
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e->ref_lx = seat->cursor->cursor->x;
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e->ref_ly = seat->cursor->cursor->y;
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e->ref_con_lx = sx;
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e->ref_con_ly = sy;
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seat->seatop_impl = &seatop_impl;
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seat->seatop_data = e;
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container_raise_floating(con);
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}
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