StillHammer
b39854cf2c
UI Widget Enhancements: - Add texture support to UICheckbox (box and checkmark textures) - Add texture support to UISlider (track and handle textures) - Add texture support to UIPanel (background texture) - Add texture support to UIProgressBar (background and fill textures) - Add texture support to UIScrollPanel (background and scrollbar textures) - All widgets now support textureId with tint color for flexible styling BgfxRenderer: - Add texture loading helpers for widget texturing - Update RHI device for texture management - Add ResourceCache texture ID support Maintenance: - Add tmpclaude-* to .gitignore (temporary Claude Code directories) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
116 lines
3.4 KiB
C++
116 lines
3.4 KiB
C++
#pragma once
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#include "../Core/UIWidget.h"
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#include <cstdint>
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namespace grove {
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/**
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* @brief Scrollable container widget with clipping
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*
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* ScrollPanel extends Panel with scrolling capabilities:
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* - Vertical and/or horizontal scrolling
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* - Mouse wheel support
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* - Optional scrollbars
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* - Content clipping (only render visible area)
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* - Drag-to-scroll support
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*/
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class UIScrollPanel : public UIWidget {
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public:
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UIScrollPanel() = default;
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~UIScrollPanel() 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 "scrollpanel"; }
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// Scroll configuration
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bool scrollVertical = true;
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bool scrollHorizontal = false;
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bool showScrollbar = true;
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bool dragToScroll = true;
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// Scroll state
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float scrollOffsetX = 0.0f;
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float scrollOffsetY = 0.0f;
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float contentWidth = 0.0f; // Total content size
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float contentHeight = 0.0f;
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// Scrollbar appearance
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float scrollbarWidth = 8.0f;
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uint32_t scrollbarColor = 0x666666FF;
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uint32_t scrollbarHoverColor = 0x888888FF;
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uint32_t scrollbarBgColor = 0x222222FF;
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// Style
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uint32_t bgColor = 0x2a2a2aFF;
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float borderRadius = 0.0f;
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float borderWidth = 1.0f;
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uint32_t borderColor = 0x444444FF;
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// Texture support
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int bgTextureId = 0; // Background texture ID (0 = solid color)
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bool useBgTexture = false; // Use texture for background
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uint32_t bgTintColor = 0xFFFFFFFF; // Tint for background texture
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int scrollbarTrackTextureId = 0; // Scrollbar track texture ID (0 = solid color)
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bool useScrollbarTrackTexture = false; // Use texture for scrollbar track
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uint32_t scrollbarTrackTintColor = 0xFFFFFFFF; // Tint for scrollbar track texture
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int scrollbarThumbTextureId = 0; // Scrollbar thumb texture ID (0 = solid color)
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bool useScrollbarThumbTexture = false; // Use texture for scrollbar thumb
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uint32_t scrollbarThumbTintColor = 0xFFFFFFFF; // Tint for scrollbar thumb texture
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// Interaction state
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bool isDraggingContent = false;
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bool isDraggingScrollbar = false;
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float dragStartX = 0.0f;
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float dragStartY = 0.0f;
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float scrollStartX = 0.0f;
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float scrollStartY = 0.0f;
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/**
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* @brief Handle mouse wheel scrolling
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*/
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void handleMouseWheel(float wheelDelta);
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/**
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* @brief Compute content bounds from children
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*/
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void computeContentSize();
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/**
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* @brief Clamp scroll offset to valid range
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*/
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void clampScrollOffset();
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/**
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* @brief Get visible content rect (for clipping)
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*/
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void getVisibleRect(float& outX, float& outY, float& outW, float& outH) const;
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/**
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* @brief Check if scrollbar is hovered
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*/
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bool isScrollbarHovered(const UIContext& ctx) const;
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/**
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* @brief Get scrollbar rect (vertical)
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*/
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void getScrollbarRect(float& outX, float& outY, float& outW, float& outH) const;
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private:
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void renderScrollbar(UIRenderer& renderer);
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void updateScrollInteraction(UIContext& ctx);
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// Retained mode render IDs
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uint32_t m_borderTopId = 0;
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uint32_t m_borderBottomId = 0;
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uint32_t m_borderLeftId = 0;
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uint32_t m_borderRightId = 0;
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uint32_t m_scrollTrackId = 0;
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uint32_t m_scrollThumbId = 0;
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};
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} // namespace grove
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