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cursor: refactor surfaceAt() to return parent

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This allows us to properly handle e.g. clicking on a xdg popup of a view
that is not currently focused by focusing that xdg popup's parent view.
This commit is contained in:
Isaac Freund 2021-07-23 16:33:25 +02:00
parent f62eedb048
commit 7428519a93
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GPG key ID: 86DED400DDFD7A11
1 changed files with 128 additions and 64 deletions
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192
river/Cursor.zig
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@ -232,32 +232,28 @@ fn handleButton(listener: *wl.Listener(*wlr.Pointer.event.Button), event: *wlr.P
}
}
var sx: f64 = undefined;
var sy: f64 = undefined;
if (self.surfaceAt(self.wlr_cursor.x, self.wlr_cursor.y, &sx, &sy)) |surface| {
// If the found surface is a keyboard inteactive layer surface,
// give it keyboard focus.
if (surface.isLayerSurface()) {
const wlr_layer_surface = wlr.LayerSurfaceV1.fromWlrSurface(surface);
if (wlr_layer_surface.current.keyboard_interactive == .exclusive) {
const layer_surface = @intToPtr(*LayerSurface, wlr_layer_surface.data);
self.seat.focusOutput(layer_surface.output);
self.seat.setFocusRaw(.{ .layer = layer_surface });
}
if (self.surfaceAt(self.wlr_cursor.x, self.wlr_cursor.y)) |result| {
switch (result.parent) {
.view => |view| {
// If a view has been clicked on, give that view keyboard focus and
// perhaps enter move/resize mode.
if (event.state == .pressed and self.pressed_count == 1) {
// If there is an active mapping for this button which is
// handled we are done here
if (self.handlePointerMapping(event, view)) return;
// Otherwise enter cursor down mode, giving keyboard focus
self.enterMode(.down, view);
}
},
.layer_surface => |layer_surface| {
// If a keyboard inteactive layer surface has been clicked on,
// give it keyboard focus.
if (layer_surface.wlr_layer_surface.current.keyboard_interactive == .exclusive) {
self.seat.focusOutput(layer_surface.output);
self.seat.setFocusRaw(.{ .layer = layer_surface });
}
},
}
// If the target surface has a view, give that view keyboard focus and
// perhaps enter move/resize mode.
if (View.fromWlrSurface(surface)) |view| {
if (event.state == .pressed and self.pressed_count == 1) {
// If there is an active mapping for this button which is
// handled we are done here
if (self.handlePointerMapping(event, view)) return;
// Otherwise enter cursor down mode
self.enterMode(.down, view);
}
}
_ = self.seat.wlr_seat.pointerNotifyButton(event.time_msec, event.button, event.state);
}
}
@ -421,11 +417,21 @@ fn handleRequestSetCursor(
}
}
const SurfaceAtResult = struct {
surface: *wlr.Surface,
sx: f64,
sy: f64,
parent: union(enum) {
view: *View,
layer_surface: *LayerSurface,
},
};
/// Find the topmost surface under the output layout coordinates lx/ly
/// returns the surface if found and sets the sx/sy parameters to the
/// surface coordinates.
/// This function must be kept in sync with the rendering order in render.zig.
fn surfaceAt(self: Self, lx: f64, ly: f64, sx: *f64, sy: *f64) ?*wlr.Surface {
fn surfaceAt(self: Self, lx: f64, ly: f64) ?SurfaceAtResult {
const wlr_output = server.root.output_layout.outputAt(lx, ly) orelse return null;
const output = @intToPtr(*Output, wlr_output.data);
@ -455,24 +461,33 @@ fn surfaceAt(self: Self, lx: f64, ly: f64, sx: *f64, sy: *f64) ?*wlr.Surface {
// 5. view toplevels and popups
// 6. bottom, background layer toplevels
if (layerSurfaceAt(output.getLayer(.overlay).*, ox, oy, sx, sy)) |s| return s;
if (layerSurfaceAt(output.getLayer(.overlay).*, ox, oy)) |s| return s;
if (fullscreen_view) |view| {
if (build_options.xwayland) if (xwaylandUnmanagedSurfaceAt(ly, lx, sx, sy)) |s| return s;
if (view.surfaceAt(ox, oy, sx, sy)) |s| return s;
//if (build_options.xwayland) if (xwaylandUnmanagedSurfaceAt(ly, lx)) |s| return s;
var sx: f64 = undefined;
var sy: f64 = undefined;
if (view.surfaceAt(ox, oy, &sx, &sy)) |found| {
return SurfaceAtResult{
.surface = found,
.sx = sx,
.sy = sy,
.parent = .{ .view = view },
};
}
} else {
for ([_]zwlr.LayerShellV1.Layer{ .top, .bottom, .background }) |layer| {
if (layerPopupSurfaceAt(output.getLayer(layer).*, ox, oy, sx, sy)) |s| return s;
if (layerPopupSurfaceAt(output.getLayer(layer).*, ox, oy)) |s| return s;
}
if (layerSurfaceAt(output.getLayer(.top).*, ox, oy, sx, sy)) |s| return s;
if (layerSurfaceAt(output.getLayer(.top).*, ox, oy)) |s| return s;
if (build_options.xwayland) if (xwaylandUnmanagedSurfaceAt(lx, ly, sx, sy)) |s| return s;
//if (build_options.xwayland) if (xwaylandUnmanagedSurfaceAt(lx, ly)) |s| return s;
if (viewSurfaceAt(output, ox, oy, sx, sy)) |s| return s;
if (viewSurfaceAt(output, ox, oy)) |s| return s;
for ([_]zwlr.LayerShellV1.Layer{ .bottom, .background }) |layer| {
if (layerSurfaceAt(output.getLayer(layer).*, ox, oy, sx, sy)) |s| return s;
if (layerSurfaceAt(output.getLayer(layer).*, ox, oy)) |s| return s;
}
}
@ -480,69 +495,118 @@ fn surfaceAt(self: Self, lx: f64, ly: f64, sx: *f64, sy: *f64) ?*wlr.Surface {
}
/// Find the topmost popup surface on the given layer at ox,oy.
fn layerPopupSurfaceAt(layer: std.TailQueue(LayerSurface), ox: f64, oy: f64, sx: *f64, sy: *f64) ?*wlr.Surface {
fn layerPopupSurfaceAt(layer: std.TailQueue(LayerSurface), ox: f64, oy: f64) ?SurfaceAtResult {
var it = layer.first;
while (it) |node| : (it = node.next) {
const layer_surface = &node.data;
var sx: f64 = undefined;
var sy: f64 = undefined;
if (layer_surface.wlr_layer_surface.popupSurfaceAt(
ox - @intToFloat(f64, layer_surface.box.x),
oy - @intToFloat(f64, layer_surface.box.y),
sx,
sy,
)) |found| return found;
&sx,
&sy,
)) |found| {
return SurfaceAtResult{
.surface = found,
.sx = sx,
.sy = sy,
.parent = .{ .layer_surface = layer_surface },
};
}
}
return null;
}
/// Find the topmost surface (or popup surface) on the given layer at ox,oy.
fn layerSurfaceAt(layer: std.TailQueue(LayerSurface), ox: f64, oy: f64, sx: *f64, sy: *f64) ?*wlr.Surface {
fn layerSurfaceAt(layer: std.TailQueue(LayerSurface), ox: f64, oy: f64) ?SurfaceAtResult {
var it = layer.first;
while (it) |node| : (it = node.next) {
const layer_surface = &node.data;
var sx: f64 = undefined;
var sy: f64 = undefined;
if (layer_surface.wlr_layer_surface.surfaceAt(
ox - @intToFloat(f64, layer_surface.box.x),
oy - @intToFloat(f64, layer_surface.box.y),
sx,
sy,
)) |found| return found;
&sx,
&sy,
)) |found| {
return SurfaceAtResult{
.surface = found,
.sx = sx,
.sy = sy,
.parent = .{ .layer_surface = layer_surface },
};
}
}
return null;
}
/// Find the topmost visible view surface (incl. popups) at ox,oy.
fn viewSurfaceAt(output: *const Output, ox: f64, oy: f64, sx: *f64, sy: *f64) ?*wlr.Surface {
fn viewSurfaceAt(output: *const Output, ox: f64, oy: f64) ?SurfaceAtResult {
var sx: f64 = undefined;
var sy: f64 = undefined;
// focused, floating views
var it = ViewStack(View).iter(output.views.first, .forward, output.current.tags, surfaceAtFilter);
while (it.next()) |view| {
if (view.current.focus == 0 or !view.current.float) continue;
if (view.surfaceAt(ox, oy, sx, sy)) |found| return found;
if (view.surfaceAt(ox, oy, &sx, &sy)) |found| {
return SurfaceAtResult{
.surface = found,
.sx = sx,
.sy = sy,
.parent = .{ .view = view },
};
}
}
// non-focused, floating views
it = ViewStack(View).iter(output.views.first, .forward, output.current.tags, surfaceAtFilter);
while (it.next()) |view| {
if (view.current.focus != 0 or !view.current.float) continue;
if (view.surfaceAt(ox, oy, sx, sy)) |found| return found;
if (view.surfaceAt(ox, oy, &sx, &sy)) |found| {
return SurfaceAtResult{
.surface = found,
.sx = sx,
.sy = sy,
.parent = .{ .view = view },
};
}
}
// focused, non-floating views
it = ViewStack(View).iter(output.views.first, .forward, output.current.tags, surfaceAtFilter);
while (it.next()) |view| {
if (view.current.focus == 0 or view.current.float) continue;
if (view.surfaceAt(ox, oy, sx, sy)) |found| return found;
if (view.surfaceAt(ox, oy, &sx, &sy)) |found| {
return SurfaceAtResult{
.surface = found,
.sx = sx,
.sy = sy,
.parent = .{ .view = view },
};
}
}
// non-focused, non-floating views
it = ViewStack(View).iter(output.views.first, .forward, output.current.tags, surfaceAtFilter);
while (it.next()) |view| {
if (view.current.focus != 0 or view.current.float) continue;
if (view.surfaceAt(ox, oy, sx, sy)) |found| return found;
if (view.surfaceAt(ox, oy, &sx, &sy)) |found| {
return SurfaceAtResult{
.surface = found,
.sx = sx,
.sy = sy,
.parent = .{ .view = view },
};
}
}
return null;
}
fn xwaylandUnmanagedSurfaceAt(lx: f64, ly: f64, sx: *f64, sy: *f64) ?*wlr.Surface {
fn xwaylandUnmanagedSurfaceAt(lx: f64, ly: f64) ?*wlr.Surface {
var it = server.root.xwayland_unmanaged_views.first;
while (it) |node| : (it = node.next) {
const xwayland_surface = node.data.xwayland_surface;
@ -560,7 +624,6 @@ fn surfaceAtFilter(view: *View, filter_tags: u32) bool {
return !view.destroying and view.current.tags & filter_tags != 0;
}
/// Enter move or resize mode
pub fn enterMode(self: *Self, mode: std.meta.Tag((Mode)), view: *View) void {
log.debug("enter {s} cursor mode", .{@tagName(mode)});
@ -645,12 +708,12 @@ fn processMotion(self: *Self, device: *wlr.InputDevice, time: u32, delta_x: f64,
if (self.mode == .passthrough or self.mode == .down) {
if (constraint.type == .locked) return;
var sx: f64 = undefined;
var sy: f64 = undefined;
const surface = self.surfaceAt(self.wlr_cursor.x, self.wlr_cursor.y, &sx, &sy);
const result = self.surfaceAt(self.wlr_cursor.x, self.wlr_cursor.y) orelse return;
if (surface != constraint.surface) return;
if (result.surface != constraint.surface) return;
const sx = result.sx;
const sy = result.sy;
var sx_con: f64 = undefined;
var sy_con: f64 = undefined;
if (!wlr.region.confine(&constraint.region, sx, sy, sx + dx, sy + dy, &sx_con, &sy_con)) {
@ -749,25 +812,26 @@ pub fn maybeResetState(self: *Self) void {
fn passthrough(self: *Self, time: u32) void {
assert(self.mode == .passthrough);
var sx: f64 = undefined;
var sy: f64 = undefined;
if (self.surfaceAt(self.wlr_cursor.x, self.wlr_cursor.y, &sx, &sy)) |surface| {
if (self.surfaceAt(self.wlr_cursor.x, self.wlr_cursor.y)) |result| {
// If input is allowed on the surface, send pointer enter and motion
// events. Note that wlroots won't actually send an enter event if
// the surface has already been entered.
if (server.input_manager.inputAllowed(surface)) {
if (server.input_manager.inputAllowed(result.surface)) {
// The focus change must be checked before sending enter events
const focus_change = self.seat.wlr_seat.pointer_state.focused_surface != surface;
const focus_change = self.seat.wlr_seat.pointer_state.focused_surface != result.surface;
self.seat.wlr_seat.pointerNotifyEnter(surface, sx, sy);
self.seat.wlr_seat.pointerNotifyMotion(time, sx, sy);
self.seat.wlr_seat.pointerNotifyEnter(result.surface, result.sx, result.sy);
self.seat.wlr_seat.pointerNotifyMotion(time, result.sx, result.sy);
const follow_mode = server.config.focus_follows_cursor;
if (follow_mode == .strict or (follow_mode == .normal and focus_change)) {
if (View.fromWlrSurface(surface)) |view| {
self.seat.focusOutput(view.output);
self.seat.focus(view);
server.root.startTransaction();
switch (result.parent) {
.view => |view| {
self.seat.focusOutput(view.output);
self.seat.focus(view);
server.root.startTransaction();
},
.layer_surface => {},
}
}
}