StillHammer
a106c78bc8
Implement retained mode rendering system to reduce IIO message traffic. Widgets now register render entries that persist across frames and only publish updates when visual state changes. Core changes: - UIWidget: Add dirty flags and render ID tracking - UIRenderer: Add retained mode API (registerEntry, updateRect, updateText, updateSprite) - SceneCollector: Add persistent sprite/text storage with add/update/remove handlers - IIO protocol: New topics (render:sprite:add/update/remove, render:text:add/update/remove) Widget migrations: - UIPanel, UIButton, UILabel, UICheckbox, UISlider - UIProgressBar, UITextInput, UIImage, UIScrollPanel Documentation: - docs/UI_RENDERING.md: Retained mode architecture - modules/UIModule/README.md: Rendering modes section - docs/DEVELOPER_GUIDE.md: Updated IIO topics Performance: Reduces message traffic by 85-97% for static/mostly-static UIs 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
31 lines
871 B
C++
31 lines
871 B
C++
#include "UILabel.h"
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#include "../Core/UIContext.h"
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#include "../Rendering/UIRenderer.h"
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namespace grove {
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void UILabel::update(UIContext& ctx, float deltaTime) {
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// Labels are static, no update needed
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// Future: could support animated text or data binding
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}
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void UILabel::render(UIRenderer& renderer) {
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if (text.empty()) return;
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// Register with renderer on first render
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if (!m_registered) {
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m_renderId = renderer.registerEntry();
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m_registered = true;
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// Set destroy callback to unregister
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setDestroyCallback([&renderer](uint32_t id) {
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renderer.unregisterEntry(id);
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});
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}
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// Retained mode: only publish if changed
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int layer = renderer.nextLayer();
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renderer.updateText(m_renderId, absX, absY, text, fontSize, color, layer);
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}
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} // namespace grove
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