v1.4.4

source/windowing/StarScrollArea.hpp

@@ -0,0 +1,132 @@
+#ifndef _STAR_SCROLL_AREA_HPP_
+#define _STAR_SCROLL_AREA_HPP_
+
+#include "StarWidget.hpp"
+#include "StarButtonWidget.hpp"
+#include "StarImageWidget.hpp"
+
+namespace Star {
+
+class ScrollThumb : public Widget {
+public:
+  ScrollThumb(GuiDirection direction);
+  virtual ~ScrollThumb() {}
+
+  void setDirection(GuiDirection direction);
+  void setImages(ImageStretchSet const& base,
+      ImageStretchSet const& hover = ImageStretchSet(),
+      ImageStretchSet const& pressed = ImageStretchSet());
+  void setImages(Json const& images);
+
+  bool isHovered() const;
+  bool isPressed() const;
+
+  void setHovered(bool hovered);
+  void setPressed(bool pressed);
+
+  void mouseOver() override;
+  void mouseOut() override;
+
+  Vec2U baseSize() const;
+
+protected:
+  virtual void renderImpl() override;
+
+private:
+  void readDefaults();
+
+  GuiDirection m_direction;
+
+  ImageStretchSet m_baseThumb;
+  ImageStretchSet m_hoverThumb;
+  ImageStretchSet m_pressedThumb;
+
+  bool m_hovered;
+  bool m_pressed;
+};
+typedef shared_ptr<ScrollThumb> ScrollThumbPtr;
+
+class ScrollBar : public Widget {
+public:
+  ScrollBar(GuiDirection direction, WidgetCallbackFunc forwardFunc, WidgetCallbackFunc backwardFunc);
+
+  void setButtonImages(Json const& images);
+
+  int trackSize() const;
+  float sizeRatio() const;
+  virtual Vec2I size() const override;
+  float scrollRatio() const;
+  Vec2I offsetFromThumbPosition(Vec2I const& thumbPosition) const;
+
+  ButtonWidgetPtr forwardButton() const;
+  ButtonWidgetPtr backwardButton() const;
+  ScrollThumbPtr thumb() const;
+
+protected:
+  void drawChildren() override;
+
+private:
+  GuiDirection m_direction;
+
+  ButtonWidgetPtr m_forward; // up or right, makes the offset higher
+  ButtonWidgetPtr m_backward; // down or left, makes the offset lower
+  ScrollThumbPtr m_thumb;
+
+  ImageStretchSet m_track;
+};
+typedef shared_ptr<ScrollBar> ScrollBarPtr;
+
+class ScrollArea : public Widget {
+public:
+  ScrollArea();
+
+  void setButtonImages(Json const& images);
+  void setThumbImages(Json const& images);
+
+  RectI contentBoundRect() const;
+  Vec2I contentSize() const;
+
+  Vec2I areaSize() const;
+
+  void scrollAreaBy(Vec2I const& offset);
+
+  Vec2I scrollOffset() const;
+  Vec2I maxScrollPosition() const;
+
+  bool horizontalScroll() const;
+  void setHorizontalScroll(bool horizontal);
+
+  bool verticalScroll() const;
+  void setVerticalScroll(bool vertical);
+
+  virtual bool sendEvent(InputEvent const& event) override;
+  virtual void update() override;
+
+protected:
+  void drawChildren() override;
+
+private:
+  int advanceFactorHelper();
+
+  int m_buttonAdvance;
+  int64_t m_advanceLimiter;
+
+  Vec2I m_scrollOffset;
+  Vec2I m_lastMaxScroll;
+  Vec2I m_contentSize;
+
+  bool m_dragActive;
+  GuiDirection m_dragDirection;
+  Vec2I m_dragOffset;
+
+  ScrollBarPtr m_vBar;
+  ScrollBarPtr m_hBar;
+  ImageWidgetPtr m_cornerBlock;
+
+  bool m_horizontalScroll;
+  bool m_verticalScroll;
+};
+typedef shared_ptr<ScrollArea> ScrollAreaPtr;
+}
+
+#endif