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>
66 lines
2.3 KiB
C++
66 lines
2.3 KiB
C++
#include "UIProgressBar.h"
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#include "../Core/UIContext.h"
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#include "../Rendering/UIRenderer.h"
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#include <algorithm>
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#include <sstream>
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#include <iomanip>
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namespace grove {
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void UIProgressBar::update(UIContext& ctx, float deltaTime) {
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// Progress bars are read-only, no interaction
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// Update children
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updateChildren(ctx, deltaTime);
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}
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void UIProgressBar::render(UIRenderer& renderer) {
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// Register with renderer on first render (need 3 entries: bg + fill + text)
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if (!m_registered) {
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m_renderId = renderer.registerEntry(); // Background track
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m_fillRenderId = renderer.registerEntry(); // Fill bar
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m_textRenderId = renderer.registerEntry(); // Text
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m_registered = true;
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// Set destroy callback to unregister all
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setDestroyCallback([&renderer, fillId = m_fillRenderId, textId = m_textRenderId](uint32_t id) {
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renderer.unregisterEntry(id);
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renderer.unregisterEntry(fillId);
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renderer.unregisterEntry(textId);
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});
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}
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// Retained mode: only publish if changed
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int bgLayer = renderer.nextLayer();
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renderer.updateRect(m_renderId, absX, absY, width, height, bgColor, bgLayer);
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// Render fill based on progress
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int fillLayer = renderer.nextLayer();
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if (horizontal) {
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float fillWidth = progress * width;
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renderer.updateRect(m_fillRenderId, absX, absY, fillWidth, height, fillColor, fillLayer);
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} else {
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float fillHeight = progress * height;
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renderer.updateRect(m_fillRenderId, absX, absY + height - fillHeight, width, fillHeight, fillColor, fillLayer);
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}
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// Render percentage text if enabled
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if (showText) {
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std::ostringstream oss;
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oss << std::fixed << std::setprecision(0) << (progress * 100.0f) << "%";
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std::string progressText = oss.str();
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int textLayer = renderer.nextLayer();
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float textX = absX + width * 0.5f;
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float textY = absY + height * 0.5f;
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renderer.updateText(m_textRenderId, textX, textY, progressText, fontSize, textColor, textLayer);
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}
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// Render children on top
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renderChildren(renderer);
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}
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void UIProgressBar::setProgress(float newProgress) {
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progress = std::max(0.0f, std::min(1.0f, newProgress));
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}
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} // namespace grove
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