/*
 * This file is subject to the terms of the GFX License. If a copy of
 * the license was not distributed with this file, you can obtain one at:
 *
 *              http://ugfx.org/license.html
 */

/**
 * @file    src/gwin/frame.c
 * @brief   GWIN sub-system frame code.
 *
 * @defgroup Frame Frame
 * @ingroup GWIN
 *
 * @{
 */

#include "gfx.h"

#if (GFX_USE_GWIN && GWIN_NEED_FRAME) || defined(__DOXYGEN__)

/* Some values for the default render */
#define BORDER_X		5
#define BORDER_Y		30
#define BUTTON_X		20
#define BUTTON_Y		20

/* Some useful macros for data type conversions */
#define gh2obj			((GFrameObject *)gh)

/* Forware declarations */
void gwinFrameDraw_Std(GWidgetObject *gw, void *param);

#if GINPUT_NEED_MOUSE
	static void _mouseDown(GWidgetObject *gw, coord_t x, coord_t y) {
	
	}

	static void _mouseUp(GWidgetObject *gw, coord_t x, coord_t y) {

	}

	static void _mouseMove(GWidgetObject *gw, coord_t x, coord_t y) {
	
	}
#endif

static const gwidgetVMT frameVMT = {
	{
		"Frame",					// The classname
		sizeof(GFrameObject),		// The object size
		_gwidgetDestroy,			// The destroy routine
		_gwidgetRedraw,				// The redraw routine
		0,							// The after-clear routine
	},
	gwinFrameDraw_Std,				// The default drawing routine
	#if GINPUT_NEED_MOUSE
		{
			_mouseDown,				// Process mouse down event
			_mouseUp,				// Process mouse up events
			_mouseMove,				// Process mouse move events
		},
	#endif
	#if GINPUT_NEED_TOGGLE
		{
			0,						// 1 toggle role
			0,						// Assign Toggles
			0,						// Get Toggles
			0,						// Process toggle off events
			0,						// Process toggle on events
		},
	#endif
	#if GINPUT_NEED_DIAL
		{
			0,						// 1 dial roles
			0,						// Assign Dials
			0,						// Get Dials
			0,						// Process dial move events
		},
	#endif
};

GHandle gwinGFrameCreate(GDisplay *g, GFrameObject *fo, GWidgetInit *pInit, uint16_t flags) {
	uint16_t tmp;

	if (!(fo = (GFrameObject *)_gwidgetCreate(g, &fo->w, pInit, &frameVMT)))
		return 0;

	fo->btnClose = NULL;
	fo->btnMin = NULL;
	fo->btnMax = NULL;

	/* Buttons require a border */
	tmp = flags;
	if ((tmp & GWIN_FRAME_CLOSE_BTN || tmp & GWIN_FRAME_MINMAX_BTN) && !(tmp & GWIN_FRAME_BORDER)) {
		tmp |= GWIN_FRAME_BORDER;
	}

	/* apply flags */
	fo->w.g.flags |= tmp;

	/* create close button if necessary */
	if (fo->w.g.flags & GWIN_FRAME_CLOSE_BTN) {
		GWidgetInit wi;

		wi.customDraw = 0;
		wi.customParam = 0;
		wi.customStyle = 0;
		wi.g.show = TRUE;

		wi.g.x = fo->w.g.width - BORDER_X - BUTTON_X;
		wi.g.y = (BORDER_Y - BUTTON_Y) / 2;
		wi.g.width = BUTTON_X;
		wi.g.height = BUTTON_Y;
		wi.text = "X";
		fo->btnClose = gwinButtonCreate(NULL, &wi);		
		gwinAddChild((GHandle)fo, fo->btnClose, FALSE);
	}

	/* create minimize and maximize buttons if necessary */
	if (fo->w.g.flags & GWIN_FRAME_MINMAX_BTN) {
		GWidgetInit wi;

		wi.customDraw = 0;
		wi.customParam = 0;
		wi.customStyle = 0;
		wi.g.show = TRUE;

		wi.g.x = (fo->w.g.flags & GWIN_FRAME_CLOSE_BTN) ? fo->w.g.width - 2*BORDER_X - 2*BUTTON_X : fo->w.g.width - BORDER_X - BUTTON_X;
		wi.g.y = (BORDER_Y - BUTTON_Y) / 2;
		wi.g.width = BUTTON_X;
		wi.g.height = BUTTON_Y;
		wi.text = "O";
		fo->btnMin = gwinButtonCreate(NULL, &wi);		
		gwinAddChild((GHandle)fo, fo->btnMin, FALSE);

		wi.g.x = (fo->w.g.flags & GWIN_FRAME_CLOSE_BTN) ? fo->w.g.width - 3*BORDER_X - 3*BUTTON_X : fo->w.g.width - BORDER_X - BUTTON_X;
		wi.g.y = (BORDER_Y - BUTTON_Y) / 2;
		wi.g.width = BUTTON_X;
		wi.g.height = BUTTON_Y;
		wi.text = "_";
		fo->btnMax = gwinButtonCreate(NULL, &wi);
		gwinAddChild((GHandle)fo, fo->btnMax, FALSE);

	}

	gwinSetVisible(&fo->w.g, pInit->g.show);

	return (GHandle)fo;
}

GHandle gwinFrameGetClose(GHandle gh) {
	if (gh->vmt != (gwinVMT *)&frameVMT)
		return;

	return gh2obj->btnClose;
}

GHandle gwinFrameGetMin(GHandle gh) {
	if (gh->vmt != (gwinVMT *)&frameVMT)
		return;

	return gh2obj->btnMin;
}

GHandle gwinFrameGetMax(GHandle gh) {
	if (gh->vmt != (gwinVMT *)&frameVMT)
		return;

	return gh2obj->btnMax;
}

///////////////////////////////////////////////////////////////////////////////////////////////////
// Default render routines                                                                       //
///////////////////////////////////////////////////////////////////////////////////////////////////

static const GColorSet* _getDrawColors(GWidgetObject *gw) {
	if (!(gw->g.flags & GWIN_FLG_ENABLED))
		return &gw->pstyle->disabled;
	//if ((gw->g.flags & GBUTTON_FLG_PRESSED))
	//	return &gw->pstyle->pressed;

	return &gw->pstyle->enabled;
}

void gwinFrameDraw_Std(GWidgetObject *gw, void *param) {
	GColorSet		*pcol;
	color_t			border;
	color_t			background;
	(void)param;

	if (gw->g.vmt != (gwinVMT *)&frameVMT)
		return;

	pcol = _getDrawColors(gw);

	// do some magic to make the background lighter than the widgets. Fix this somewhen.
	border = HTML2COLOR(0x2698DE);
	background = HTML2COLOR(0xEEEEEE);

	#if GDISP_NEED_CLIP
		gdispGSetClip(gw->g.display, gw->g.x, gw->g.y, gw->g.width, gw->g.height);
	#endif 

	if (gw->g.flags & GWIN_FRAME_BORDER) {
		gdispGFillArea(gw->g.display, gw->g.x, gw->g.y, gw->g.width, gw->g.height, border);
		gdispGFillArea(gw->g.display, gw->g.x + BORDER_X, gw->g.y + BORDER_Y, gw->g.width - 2*BORDER_X, gw->g.width - BORDER_Y - BORDER_X, background);
	} else {
		// This ensure that the actual frame content (it's children) render at the same spot, no mather whether the frame has a border or not
		gdispGFillArea(gw->g.display, gw->g.x + BORDER_X, gw->g.y + BORDER_Y, gw->g.width, gw->g.height, background);
	}

	#if GDISP_NEED_CLIP
		gdispGUnsetClip(gw->g.display);
	#endif

	// redraw buttons if necessary - this should be done due the parent-child relationship but that is buggy...
	if (gw->g.flags & GWIN_FRAME_CLOSE_BTN) {
		gwinRedraw(((GFrameObject*)gw)->btnClose);
	}
	if (gw->g.flags & GWIN_FRAME_MINMAX_BTN) {
		gwinRedraw(((GFrameObject*)gw)->btnMin);
		gwinRedraw(((GFrameObject*)gw)->btnMax);
	}

	// FixMe...
	//gwinRedraw(gw);
}

#endif  /* (GFX_USE_GWIN && GWIN_NEED_FRAME) || defined(__DOXYGEN__) */
/** @} */