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interactive: Refactor natural_geometry/tiled state handling
Currently, snapping to a screen edge and then snapping to maximize results in both the natural_geometry and tiled state of the view getting messed up. After unmaximize, the view ends up in a weird state (tiled location but natural/untiled size). There are also a couple of sketchy things going on in the code: - interactive_begin() pokes its own values into view->natural_geometry to force view_maximize() to set a particular geometry. - interactive_end() "fixes" view->natural_geometry after calling view_maximize() to save the original geometry from the start of the interactive move/resize. To fix all this: - Adjust/expand the API of view.c so that the interactive.c can avoid this "back door" of overwriting view->natural_geometry directly. - Save the natural geometry and the tiled state of the view in interactive_begin() when starting to move the view. When done, interactive_end() will update the tiled state if appropriate but *not* overwrite the natural geometry.
This commit is contained in:
John Lindgren
Johan Malm
parent
636b38561b
commit
9021020f6e
7 changed files with 192 additions and 120 deletions
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@ -17,124 +17,154 @@ max_move_scale(double pos_cursor, double pos_current,
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void
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interactive_begin(struct view *view, enum input_mode mode, uint32_t edges)
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{
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if (mode == LAB_INPUT_STATE_MOVE && view->fullscreen) {
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/**
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* We don't allow moving fullscreen windows.
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*
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* If you think there is a good reason to allow it
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* feel free to open an issue explaining your use-case.
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*/
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return;
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}
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if (mode == LAB_INPUT_STATE_RESIZE
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&& (view->fullscreen || view->maximized)) {
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/* We don't allow resizing while in maximized or fullscreen state */
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return;
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}
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/*
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* This function sets up an interactive move or resize operation, where
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* the compositor stops propagating pointer events to clients and
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* instead consumes them itself, to move or resize windows.
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*/
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struct seat *seat = &view->server->seat;
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struct server *server = view->server;
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server->grabbed_view = view;
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server->input_mode = mode;
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/* Remember view and cursor positions at start of move/resize */
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server->grab_x = seat->cursor->x;
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server->grab_y = seat->cursor->y;
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server->grab_box.x = view->x;
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server->grab_box.y = view->y;
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server->grab_box.width = view->w;
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server->grab_box.height = view->h;
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server->resize_edges = edges;
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if (view->maximized || view->tiled) {
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if (mode == LAB_INPUT_STATE_MOVE) {
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/* Exit maximized or tiled mode */
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int new_x = max_move_scale(view->server->seat.cursor->x,
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view->x, view->w, view->natural_geometry.width);
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int new_y = max_move_scale(view->server->seat.cursor->y,
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view->y, view->h, view->natural_geometry.height);
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view->natural_geometry.x = new_x;
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view->natural_geometry.y = new_y;
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if (view->maximized) {
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view_maximize(view, false);
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}
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if (view->tiled) {
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view_move_resize(view, view->natural_geometry);
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}
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/**
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* view_maximize() / view_move_resize() indirectly calls
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* view->impl->configure which is async but we are using
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* the current values in server->grab_box. We pretend the
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* configure already happened by setting them manually.
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*/
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server->grab_box.x = new_x;
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server->grab_box.y = new_y;
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server->grab_box.width = view->natural_geometry.width;
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server->grab_box.height = view->natural_geometry.height;
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}
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}
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/* Moving or resizing always resets tiled state */
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view->tiled = 0;
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struct seat *seat = &server->seat;
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struct wlr_box geometry = {
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.x = view->x,
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.y = view->y,
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.width = view->w,
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.height = view->h
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};
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switch (mode) {
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case LAB_INPUT_STATE_MOVE:
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cursor_set(&server->seat, LAB_CURSOR_GRAB);
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if (view->fullscreen) {
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/**
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* We don't allow moving fullscreen windows.
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*
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* If you think there is a good reason to allow
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* it, feel free to open an issue explaining
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* your use-case.
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*/
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return;
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}
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if (view->maximized || view->tiled) {
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/*
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* Un-maximize and restore natural width/height.
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* Don't reset tiled state yet since we may want
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* to keep it (in the snap-to-maximize case).
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*/
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geometry = view->natural_geometry;
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geometry.x = max_move_scale(seat->cursor->x, view->x,
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view->w, geometry.width);
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geometry.y = max_move_scale(seat->cursor->y, view->y,
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view->h, geometry.height);
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view_restore_to(view, geometry);
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} else {
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/* Store natural geometry at start of move */
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view_store_natural_geometry(view);
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}
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cursor_set(seat, LAB_CURSOR_GRAB);
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break;
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case LAB_INPUT_STATE_RESIZE:
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cursor_set(&server->seat, cursor_get_from_edge(edges));
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if (view->maximized || view->fullscreen) {
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/*
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* We don't allow resizing while maximized or
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* fullscreen.
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*/
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return;
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}
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/*
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* Reset tiled state but keep the same geometry as the
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* starting point for the resize.
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*/
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view->tiled = 0;
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cursor_set(seat, cursor_get_from_edge(edges));
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break;
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default:
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break;
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/* Should not be reached */
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return;
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}
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server->input_mode = mode;
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server->grabbed_view = view;
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/* Remember view and cursor positions at start of move/resize */
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server->grab_x = seat->cursor->x;
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server->grab_y = seat->cursor->y;
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server->grab_box = geometry;
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server->resize_edges = edges;
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}
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/* Returns true if view was snapped to any edge */
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static bool
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snap_to_edge(struct view *view)
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{
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int snap_range = rc.snap_edge_range;
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if (!snap_range) {
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return false;
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}
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/* Translate into output local coordinates */
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double cursor_x = view->server->seat.cursor->x;
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double cursor_y = view->server->seat.cursor->y;
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wlr_output_layout_output_coords(view->server->output_layout,
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view->output->wlr_output, &cursor_x, &cursor_y);
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/*
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* Don't store natural geometry here (it was
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* stored already in interactive_begin())
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*/
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struct wlr_box *area = &view->output->usable_area;
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if (cursor_x <= area->x + snap_range) {
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view_snap_to_edge(view, "left",
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/*store_natural_geometry*/ false);
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} else if (cursor_x >= area->x + area->width - snap_range) {
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view_snap_to_edge(view, "right",
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/*store_natural_geometry*/ false);
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} else if (cursor_y <= area->y + snap_range) {
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if (rc.snap_top_maximize) {
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view_maximize(view, true,
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/*store_natural_geometry*/ false);
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} else {
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view_snap_to_edge(view, "up",
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/*store_natural_geometry*/ false);
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}
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} else if (cursor_y >= area->y + area->height - snap_range) {
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view_snap_to_edge(view, "down",
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/*store_natural_geometry*/ false);
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} else {
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/* Not close to any edge */
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return false;
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}
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return true;
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}
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void
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interactive_end(struct view *view)
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interactive_finish(struct view *view)
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{
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if (view->server->grabbed_view == view) {
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bool should_snap = view->server->input_mode == LAB_INPUT_STATE_MOVE
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&& rc.snap_edge_range;
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enum input_mode mode = view->server->input_mode;
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view->server->input_mode = LAB_INPUT_STATE_PASSTHROUGH;
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view->server->grabbed_view = NULL;
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if (should_snap) {
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int snap_range = rc.snap_edge_range;
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struct wlr_box *area = &view->output->usable_area;
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/* Translate into output local coordinates */
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double cursor_x = view->server->seat.cursor->x;
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double cursor_y = view->server->seat.cursor->y;
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wlr_output_layout_output_coords(view->server->output_layout,
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view->output->wlr_output, &cursor_x, &cursor_y);
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if (cursor_x <= area->x + snap_range) {
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view_snap_to_edge(view, "left");
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} else if (cursor_x >= area->x + area->width - snap_range) {
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view_snap_to_edge(view, "right");
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} else if (cursor_y <= area->y + snap_range) {
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if (rc.snap_top_maximize) {
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view_maximize(view, true);
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/*
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* When unmaximizing later on restore
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* original position
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*/
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view->natural_geometry.x =
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view->server->grab_box.x;
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view->natural_geometry.y =
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view->server->grab_box.y;
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} else {
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view_snap_to_edge(view, "up");
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}
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} else if (cursor_y >= area->y + area->height - snap_range) {
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view_snap_to_edge(view, "down");
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if (mode == LAB_INPUT_STATE_MOVE) {
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if (!snap_to_edge(view)) {
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/* Reset tiled state if not snapped */
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view->tiled = 0;
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}
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}
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/* Update focus/cursor image */
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cursor_update_focus(view->server);
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}
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}
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/*
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* Cancels interative move/resize without changing the state of the of
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* the view in any way. This may leave the tiled state inconsistent with
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* the actual geometry of the view.
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*/
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void
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interactive_cancel(struct view *view)
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{
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if (view->server->grabbed_view == view) {
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view->server->input_mode = LAB_INPUT_STATE_PASSTHROUGH;
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view->server->grabbed_view = NULL;
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/* Update focus/cursor image */
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cursor_update_focus(view->server);
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}
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}
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