libui/gtkarea/ui.h

// 4 september 2015

typedef struct uiArea uiArea;
typedef struct uiAreaHandler uiAreaHandler;
typedef struct uiAreaDrawParams uiAreaDrawParams;

struct uiAreaHandler {
	void (*Draw)(uiAreaHandler *, uiArea *, uiAreaDrawParams *);
	uintmax_t (*HScrollMax)(uiAreaHandler *, uiArea *);
	uintmax_t (*VScrollMax)(uiAreaHandler *, uiArea *);
};

struct uiAreaDrawParams {
	// TODO context

	intmax_t ClientWidth;
	intmax_t ClientHeight;

	intmax_t ClipX;
	intmax_t ClipY;
	intmax_t ClipWidth;
	intmax_t ClipHeight;

//TODO	xxxx DPIX;
//TODO	xxxx DPIY;

	intmax_t HScrollPos;
	intmax_t VScrollPos;
};