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vxfw: implement event capturing for mouse events
+63
-5
+63
-5
src/vxfw/App.zig
+63
-5
src/vxfw/App.zig
···
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if (item.widget.eql(last_handler)) break;
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} else {
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try last_handler.handleEvent(ctx, .mouse_leave);
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self.maybe_last_handler = null;
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try app.handleCommand(&ctx.cmds);
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}
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}
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-
while (hits.popOrNull()) |item| {
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+
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const maybe_target = hits.popOrNull();
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// capturing phase
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ctx.phase = .capturing;
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for (hits.items) |item| {
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var m_local = mouse;
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m_local.col = item.local.col;
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m_local.row = item.local.row;
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try item.widget.handleEvent(ctx, .{ .mouse = m_local });
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try app.handleCommand(&ctx.cmds);
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// If the event wasn't consumed, we keep passing it on
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if (!ctx.consume_event) continue;
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// If the event was consumed, we check if we need to send a mouse_leave and return
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if (ctx.consume_event) {
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if (self.maybe_last_handler) |last_handler| {
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if (!last_handler.eql(item.widget)) {
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try last_handler.handleEvent(ctx, .mouse_leave);
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self.maybe_last_handler = item.widget;
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try app.handleCommand(&ctx.cmds);
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}
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self.maybe_last_handler = item.widget;
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return;
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}
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}
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}
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self.maybe_last_handler = item.widget;
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-
return;
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// target phase
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ctx.phase = .at_target;
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if (maybe_target) |target| {
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var m_local = mouse;
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m_local.col = target.local.col;
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m_local.row = target.local.row;
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try target.widget.handleEvent(ctx, .{ .mouse = m_local });
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try app.handleCommand(&ctx.cmds);
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// If the event was consumed, we check if we need to send a mouse_leave and return
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if (ctx.consume_event) {
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if (self.maybe_last_handler) |last_handler| {
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if (!last_handler.eql(target.widget)) {
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try last_handler.handleEvent(ctx, .mouse_leave);
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self.maybe_last_handler = target.widget;
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try app.handleCommand(&ctx.cmds);
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}
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self.maybe_last_handler = target.widget;
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return;
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}
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}
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}
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// Bubbling phase
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ctx.phase = .bubbling;
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while (hits.popOrNull()) |item| {
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var m_local = mouse;
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m_local.col = item.local.col;
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m_local.row = item.local.row;
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try item.widget.handleEvent(ctx, .{ .mouse = m_local });
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try app.handleCommand(&ctx.cmds);
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// If the event was consumed, we check if we need to send a mouse_leave and return
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if (ctx.consume_event) {
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if (self.maybe_last_handler) |last_handler| {
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if (!last_handler.eql(item.widget)) {
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try last_handler.handleEvent(ctx, .mouse_leave);
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self.maybe_last_handler = item.widget;
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try app.handleCommand(&ctx.cmds);
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}
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self.maybe_last_handler = item.widget;
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return;
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}
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}
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}
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// If no one handled the mouse, we assume it exited