perf: Smart Cursor - widgets request cursor blink explicitly
Implements "Active Request" pattern for cursor animation: - Add requested_cursor_blink flag to Context (reset each frame) - Add requestCursorBlink() function for widgets to call - needsCursorAnimation() now returns false if no widget requested it - TextInput calls requestCursorBlink() when focused and editable - CellEditor calls requestCursorBlink() when editing This eliminates unnecessary redraws when no cursor is visible (e.g., in Config tab with tables but no active text input). Also raised CURSOR_BLINK_PERIOD_MS from 300ms to 600ms (GTK/Linux standard). 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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3 changed files with 27 additions and 1 deletions
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@ -127,6 +127,11 @@ pub const Context = struct {
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/// Main loop should check this and request another frame if true.
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needs_animation_frame: bool = false,
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/// Flag set by widgets that have an active cursor (TextInput, CellEditor).
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/// Reset each frame in beginFrame(). Only when true does needsCursorAnimation() return true.
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/// This prevents unnecessary redraws when no text field is being edited.
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requested_cursor_blink: bool = false,
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/// Optional text measurement function (set by application with TTF font)
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/// Returns pixel width of text. If null, falls back to char_width * len.
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text_measure_fn: ?*const fn ([]const u8) u32 = null,
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@ -244,6 +249,9 @@ pub const Context = struct {
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// Reset animation request (set by widgets during draw)
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self.needs_animation_frame = false;
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// Reset cursor blink request (set by TextInput/CellEditor during draw)
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self.requested_cursor_blink = false;
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self.frame += 1;
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}
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@ -393,14 +401,24 @@ pub const Context = struct {
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/// Check if cursor animation is needed (for event loop timeout decisions).
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/// Returns true if we're within the active period where cursor should blink.
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/// The application should use a short timeout (e.g., 500ms) when this returns true,
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/// Only returns true if a widget (TextInput/CellEditor) requested cursor blink this frame.
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/// The application should use a short timeout (e.g., 600ms) when this returns true,
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/// and can use infinite timeout when false.
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pub fn needsCursorAnimation(self: Self) bool {
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if (self.current_time_ms == 0) return false;
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// Smart cursor: only blink if a widget actually requested it this frame
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if (!self.requested_cursor_blink) return false;
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const idle_time = self.current_time_ms -| self.last_input_time_ms;
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return idle_time < CURSOR_IDLE_TIMEOUT_MS;
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}
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/// Request cursor blink animation for this frame.
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/// Called by widgets with active text cursors (TextInput, CellEditor).
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/// Must be called each frame while cursor is active (immediate-mode pattern).
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pub fn requestCursorBlink(self: *Self) void {
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self.requested_cursor_blink = true;
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}
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/// Get recommended event loop timeout in milliseconds.
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/// Returns the time until next cursor blink toggle, or null for infinite wait.
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pub fn getAnimationTimeout(self: Self) ?u32 {
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@ -284,6 +284,11 @@ pub fn textInputRect(
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// Sync state.focused for backwards compatibility
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state.focused = has_focus;
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// Smart cursor: request cursor blink only when we have an active editable cursor
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if (has_focus and !config.readonly) {
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ctx.requestCursorBlink();
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}
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// Theme colors (Z-Design: usar theme dinámico, con overrides del panel)
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const theme = Style.currentTheme().*;
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// Use override colors if provided, otherwise use theme defaults
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@ -57,6 +57,9 @@ pub fn drawCellEditor(
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if (!state.isEditing()) return result;
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// Smart cursor: request cursor blink while editing cell
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ctx.requestCursorBlink();
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// Padding interno
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const padding: i32 = 2;
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