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>
85 lines
2.1 KiB
C++
85 lines
2.1 KiB
C++
#pragma once
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#include "../Core/UIWidget.h"
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#include <cstdint>
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#include <string>
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namespace grove {
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/**
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* @brief Slider widget for numeric value input
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*
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* Draggable slider for selecting a value within a range.
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* Supports horizontal and vertical orientation.
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*/
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class UISlider : public UIWidget {
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public:
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UISlider() = default;
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~UISlider() override = default;
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void update(UIContext& ctx, float deltaTime) override;
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void render(UIRenderer& renderer) override;
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std::string getType() const override { return "slider"; }
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/**
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* @brief Check if a point is inside this slider
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*/
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bool containsPoint(float px, float py) const;
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/**
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* @brief Handle mouse button event
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*/
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bool onMouseButton(int button, bool pressed, float x, float y);
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/**
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* @brief Handle mouse drag
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*/
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void onMouseDrag(float x, float y);
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/**
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* @brief Set value (clamped to min/max)
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*/
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void setValue(float newValue);
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/**
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* @brief Get current value
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*/
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float getValue() const { return value; }
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// Slider properties
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float minValue = 0.0f;
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float maxValue = 100.0f;
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float value = 50.0f;
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float step = 0.0f; // 0 = continuous, >0 = snap to steps
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bool horizontal = true; // true = horizontal, false = vertical
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std::string onChange; // Action to publish when value changes
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// Style
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uint32_t trackColor = 0x34495eFF;
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uint32_t fillColor = 0x3498dbFF;
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uint32_t handleColor = 0xecf0f1FF;
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float handleSize = 16.0f;
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// State
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bool isDragging = false;
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bool isHovered = false;
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private:
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/**
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* @brief Calculate handle position from value
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*/
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void calculateHandlePosition(float& handleX, float& handleY) const;
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/**
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* @brief Calculate value from mouse position
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*/
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float calculateValueFromPosition(float x, float y) const;
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// Retained mode render IDs (track uses m_renderId from base class)
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uint32_t m_fillRenderId = 0; // Fill element
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uint32_t m_handleRenderId = 0; // Handle element
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};
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} // namespace grove
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