the whole game

src/client/gui/components/ScrollingPane.h

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+#ifndef NET_MINECRAFT_CLIENT_GUI_COMPONENTS__ScrollingPane_H__
+#define NET_MINECRAFT_CLIENT_GUI_COMPONENTS__ScrollingPane_H__
+
+#include "../GuiComponent.h"
+#include "ImageButton.h"
+#include "../../player/input/touchscreen/TouchAreaModel.h"
+#include "../../../world/phys/Vec3.h"
+#include "../../Timer.h"
+
+enum ScrollingPaneFlags {
+	SF_LockX		= 1 << 0,
+	SF_LockY		= 1 << 1,
+	SF_WrapX		= 1 << 2,
+	SF_WrapY		= 1 << 3,
+	SF_HardLimits	= 1 << 4,
+	SF_MultiSelect	= 1 << 5,
+	//SF_Snap		= 1 << 6,
+	//SF_CustomSnap = 1 << 7,
+	//SF_Scissor	= 1 << 8,
+	SF_ShowScrollbar= 1 << 9,
+	SF_NoHoldSelect = 1 << 10
+};
+
+typedef struct ScrollBar {
+	ScrollBar()
+	:	alpha(0),
+		fading(-1)
+	{}
+	float x;
+	float y;
+	float w;
+	float h;
+	//bool visible;
+	float alpha;
+	int   fading;
+} ScrollBar;
+
+class ScrollingPane: public GuiComponent {
+public:
+	typedef struct GridItem {
+		int id;
+		int x, y;
+		// The GUI coordinates comes in (xf, yf)
+		float xf, yf;
+		bool selected;
+	} GridItem;
+
+	ScrollingPane(int flags, const IntRectangle& boundingBox, const IntRectangle& itemRect, int columns, int numItems, float screenScale = 1.0f, const IntRectangle& itemBoundingRect = IntRectangle(0,0,0,0));
+	~ScrollingPane();
+	//void init(Minecraft*, int width, int height);
+	void tick();
+	void render(int xm, int ym, float alpha);
+
+	bool getGridItemFor_slow(int itemIndex, GridItem& out);
+
+	void setSelected(int id, bool selected);
+
+	// This function is called with all visible GridItems. The base
+	// implementation just dispatches each item to renderItem in y,x order
+	virtual void renderBatch(std::vector<GridItem>& items, float alpha);
+	virtual void renderItem(GridItem& item, float alpha);
+
+	//void render(int xx, int yy);
+	bool queryHoldTime(int* gridId, int* heldMs);
+
+protected:
+	GridItem getItemForPos(float x, float y, bool isScreenPos);
+	void handleUserInput();
+	void addDeltaPos(float x, float y, float dt, int z);
+
+	void translate(float xo, float yo);
+
+	int flags;
+
+	int columns;
+	int rows;
+	int numItems;
+
+	int px, py;
+	float fpx, fpy;
+
+	float screenScale;
+	float invScreenScale;
+	//bool hasItemBounding;
+
+	IntRectangle bbox;
+	IntRectangle itemRect;
+	IntRectangle itemBbox;
+	RectangleArea area;
+	RectangleArea bboxArea;
+
+	// Dragging info
+	std::vector<float>	dragDeltas;
+	int					dragState;
+	Vec3				dragBeginPos;
+	Vec3				dragBeginScreenPos;
+	int					dragTicks;
+	float				dragLastDeltaTimeStamp;
+	Vec3				dragLastPos;
+
+	float dx, dy;
+	float friction;
+
+	float dstx, dsty;
+
+	// Rewrite
+	bool dragging; //!
+	bool decelerating;
+	bool tracking; //!
+
+	bool pagingEnabled; //!
+
+	Vec3 _contentOffset; //!
+	Vec3 _contentOffsetBeforeDeceleration; //*
+
+	int lastEventTime; //<
+
+	Vec3 decelerationVelocity; //*
+	Vec3 minDecelerationPoint; //*
+	Vec3 maxDecelerationPoint; //*
+
+	float penetrationDeceleration; //<
+	float penetrationAcceleration; //<
+
+	Vec3 minPoint; //*
+	Vec3 startPosition; //*
+	Vec3 startTouchPosition; //*
+	Vec3 startTimePosition; //*
+
+	bool wasDeceleratingWhenTouchesBegan; //*
+	bool firstDrag; //<
+
+	float startTime; //<
+	//float startTime
+
+	IntRectangle size;
+	int lastFrame;
+
+	bool _scrollEnabled; //!
+	bool touchesHaveMoved; //*
+
+	virtual void didEndDragging() {}
+	virtual void didEndDecelerating() {}
+	virtual void willBeginDecelerating() {}
+	virtual void willBeginDragging() {}
+
+	int te_moved,
+		te_ended,
+		te_highlight;
+	int highlightTimer;
+	int highlightStarted;
+	GridItem highlightItem;
+
+	bool* selected;
+	int selectedId;
+
+	ScrollBar vScroll, hScroll;
+
+	IntRectangle adjustedContentSize;
+	void touchesBegan(float x, float y, int t);
+	void touchesMoved(float x, float y, int t);
+	void touchesEnded(float x, float y, int t);
+	void touchesCancelled(float x, float y, int t);
+	void beginTracking(float x, float y, int t);
+	void onHoldItem();
+
+	void _onSelect( int id );
+	virtual bool onSelect(int gridId, bool selected); 
+
+	Vec3& contentOffset();
+
+	void startDecelerationAnimation(bool force);
+	void stopDecelerationAnimation();
+	void stepThroughDecelerationAnimation(bool f);
+
+	void setContentOffset(float x, float y);
+	void setContentOffset(Vec3 a);
+	void setContentOffsetWithAnimation(Vec3 b, bool doScroll);
+	void snapContentOffsetToBounds(bool snap); //*
+	void adjustContentSize();
+	//TouchAreaModel _areaModel;
+
+	bool isAllSet(int flag) { return (flags & flag) == flag; }
+	bool isSet(int flag)    { return (flags & flag) != 0; }
+	bool isNotSet(int flag) { return !isSet(flag); }
+
+	void updateHorizontalScrollIndicator();
+	void updateVerticalScrollIndicator();
+	void hideScrollIndicators(); //*
+	void updateScrollFade( ScrollBar& vScroll );
+private:
+	Timer _timer;
+	bool  _doStepTimer;
+	bool  _wasDown;
+	float _lx;
+	float _ly;
+};
+
+#endif /*NET_MINECRAFT_CLIENT_GUI_COMPONENTS__ScrollingPane_H__*/