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https://gitlab.freedesktop.org/wayland/weston
synced 2024-10-05 02:48:24 +00:00
dnd: implement option for not offering data to other clients
Add option --self-only to dnd client. If this options is passed, the drag will be started with no data source so that no drag and drop events are sent to other clients.
This commit is contained in:
Ander Conselvan de Oliveira
Kristian Høgsberg
parent
a6128d6183
commit
08bcf14903
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@ -37,12 +37,16 @@
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#include "window.h"
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#include "../shared/cairo-util.h"
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struct dnd_drag;
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struct dnd {
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struct window *window;
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struct widget *widget;
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struct display *display;
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uint32_t key;
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struct item *items[16];
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int self_only;
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struct dnd_drag *current_drag;
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};
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struct dnd_drag {
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@ -366,6 +370,7 @@ dnd_button_handler(struct widget *widget,
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struct wl_buffer *buffer;
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unsigned int i;
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uint32_t serial;
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cairo_surface_t *icon;
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widget_get_allocation(dnd->widget, &allocation);
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input_get_position(input, &x, &y);
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@ -397,15 +402,20 @@ dnd_button_handler(struct widget *widget,
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input_ungrab(input);
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dnd_drag->data_source =
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display_create_data_source(dnd->display);
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wl_data_source_add_listener(dnd_drag->data_source,
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&data_source_listener,
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dnd_drag);
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wl_data_source_offer(dnd_drag->data_source,
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"application/x-wayland-dnd-flower");
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wl_data_source_offer(dnd_drag->data_source,
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"text/plain; charset=utf-8");
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if (dnd->self_only) {
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dnd_drag->data_source = NULL;
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} else {
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dnd_drag->data_source =
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display_create_data_source(dnd->display);
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wl_data_source_add_listener(dnd_drag->data_source,
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&data_source_listener,
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dnd_drag);
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wl_data_source_offer(dnd_drag->data_source,
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"application/x-wayland-dnd-flower");
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wl_data_source_offer(dnd_drag->data_source,
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"text/plain; charset=utf-8");
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}
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wl_data_device_start_drag(input_get_data_device(input),
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dnd_drag->data_source,
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window_get_wl_surface(dnd->window),
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@ -419,12 +429,18 @@ dnd_button_handler(struct widget *widget,
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dnd_drag->translucent =
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create_drag_cursor(dnd_drag, item, x, y, 0.2);
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buffer = display_get_buffer_for_surface(dnd->display, dnd_drag->translucent);
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if (dnd->self_only)
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icon = dnd_drag->opaque;
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else
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icon = dnd_drag->translucent;
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buffer = display_get_buffer_for_surface(dnd->display, icon);
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wl_surface_attach(dnd_drag->drag_surface, buffer,
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-dnd_drag->hotspot_x, -dnd_drag->hotspot_y);
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wl_surface_damage(dnd_drag->drag_surface, 0, 0,
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dnd_drag->width, dnd_drag->height);
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dnd->current_drag = dnd_drag;
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window_schedule_redraw(dnd->window);
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}
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}
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@ -445,7 +461,11 @@ static int
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dnd_enter_handler(struct widget *widget,
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struct input *input, float x, float y, void *data)
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{
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return lookup_cursor(data, x, y);
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struct dnd *dnd = data;
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dnd->current_drag = NULL;
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return lookup_cursor(dnd, x, y);
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}
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static int
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@ -463,10 +483,13 @@ dnd_data_handler(struct window *window,
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{
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struct dnd *dnd = data;
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if (!dnd_get_item(dnd, x, y)) {
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input_accept(input, types[0]);
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} else {
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if (!types)
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return;
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if (dnd_get_item(dnd, x, y) || dnd->self_only) {
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input_accept(input, NULL);
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} else {
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input_accept(input, types[0]);
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}
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}
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@ -501,15 +524,26 @@ dnd_drop_handler(struct window *window, struct input *input,
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int32_t x, int32_t y, void *data)
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{
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struct dnd *dnd = data;
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struct dnd_flower_message message;
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if (dnd_get_item(dnd, x, y)) {
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fprintf(stderr, "got 'drop', but no target\n");
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return;
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}
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input_receive_drag_data(input,
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"application/x-wayland-dnd-flower",
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dnd_receive_func, dnd);
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if (!dnd->self_only) {
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input_receive_drag_data(input,
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"application/x-wayland-dnd-flower",
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dnd_receive_func, dnd);
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} else if (dnd->current_drag) {
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message.seed = dnd->current_drag->item->seed;
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message.x_offset = dnd->current_drag->x_offset;
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message.y_offset = dnd->current_drag->y_offset;
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dnd_receive_func(&message, sizeof message, x, y, dnd);
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dnd->current_drag = NULL;
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} else {
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fprintf(stderr, "ignoring drop from another client\n");
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}
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}
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static struct dnd *
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@ -564,6 +598,8 @@ int
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main(int argc, char *argv[])
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{
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struct display *d;
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struct dnd *dnd;
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int i;
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d = display_create(argc, argv);
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if (d == NULL) {
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@ -571,7 +607,11 @@ main(int argc, char *argv[])
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return -1;
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}
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dnd_create(d);
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dnd = dnd_create(d);
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for (i = 1; i < argc; i++)
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if (strcmp("--self-only", argv[i]) == 0)
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dnd->self_only = 1;
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display_run(d);
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@ -2099,22 +2099,30 @@ data_device_enter(void *data, struct wl_data_device *data_device,
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{
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struct input *input = data;
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struct window *window;
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void *types_data;
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float x = wl_fixed_to_double(x_w);
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float y = wl_fixed_to_double(y_w);
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char **p;
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input->pointer_enter_serial = serial;
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input->drag_offer = wl_data_offer_get_user_data(offer);
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window = wl_surface_get_user_data(surface);
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input->pointer_focus = window;
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p = wl_array_add(&input->drag_offer->types, sizeof *p);
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*p = NULL;
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if (offer) {
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input->drag_offer = wl_data_offer_get_user_data(offer);
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p = wl_array_add(&input->drag_offer->types, sizeof *p);
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*p = NULL;
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types_data = input->drag_offer->types.data;
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} else {
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input->drag_offer = NULL;
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types_data = NULL;
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}
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window = input->pointer_focus;
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if (window->data_handler)
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window->data_handler(window, input, x, y,
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input->drag_offer->types.data,
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window->data_handler(window, input, x, y, types_data,
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window->user_data);
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}
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@ -2123,8 +2131,10 @@ data_device_leave(void *data, struct wl_data_device *data_device)
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{
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struct input *input = data;
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data_offer_destroy(input->drag_offer);
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input->drag_offer = NULL;
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if (input->drag_offer) {
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data_offer_destroy(input->drag_offer);
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input->drag_offer = NULL;
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}
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}
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static void
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@ -2135,13 +2145,18 @@ data_device_motion(void *data, struct wl_data_device *data_device,
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struct window *window = input->pointer_focus;
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float x = wl_fixed_to_double(x_w);
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float y = wl_fixed_to_double(y_w);
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void *types_data;
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input->sx = x;
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input->sy = y;
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if (input->drag_offer)
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types_data = input->drag_offer->types.data;
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else
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types_data = NULL;
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if (window->data_handler)
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window->data_handler(window, input, x, y,
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input->drag_offer->types.data,
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window->data_handler(window, input, x, y, types_data,
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window->user_data);
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}
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