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#include <windows.h>

#include "episodelistview.h"
#include "datalistview.h"
#include "layout.h"
#include "win.h"

extern HWND g_hWnd;
extern HWND g_hWndStatus;
extern EpisodeListView* g_elv;
extern DataListView* g_dlv;

void UpdateLayout(int w, int h)
{
	if (!g_hWndStatus) return;

	RECT rc, rrStatus;
	if (w && h) rc = {0, 0, w, h};
	else Require(GetClientRect(g_hWnd, &rc));
	Require(GetRelativeRect(g_hWndStatus, &rrStatus));

	SendMessage(g_hWnd, WM_SETREDRAW, FALSE, 0);

	/* Resize list views. */
	const long pad = EBIsThemeActive()? Dpi(6): 0; /* Add padding in modern themes. */
	const long cyDlv = rrStatus.top-g_dlv->Height()-pad;
	Require(SetWindowRect(g_dlv->hWnd, pad, cyDlv, rc.right-pad, rrStatus.top-pad));
	Require(SetWindowRect(g_elv->hWnd, pad, pad, rc.right-pad, cyDlv-pad));
	g_dlv->ResizeColumns(rc.right-pad-pad);
	g_elv->ResizeColumns(rc.right-pad-pad);

	/* Resize status bar parts. */
	const int aParts[] = {rc.right-Dpi(55), rc.right};
	SendMessage(g_hWndStatus, SB_SETPARTS,
	    reinterpret_cast<WPARAM>(sizeof(aParts)), reinterpret_cast<LPARAM>(aParts));

	SendMessage(g_hWnd, WM_SETREDRAW, TRUE, 0);
	RedrawWindow(g_hWnd, nullptr, nullptr,
	    RDW_ERASE|RDW_FRAME|RDW_INVALIDATE|RDW_ALLCHILDREN);
}

bool DlvDragger::InDragArea(const int x, const int y) const
{
	RECT rrDlv;
	Require(GetRelativeRect(g_dlv->hWnd, &rrDlv));

	const int pad = EBIsThemeActive()? Dpi(6): 0;
	const int extra = EBIsThemeActive()? 0: Dpi(2);
	if (x < rrDlv.left || x > rrDlv.right) return false;
	if (y < rrDlv.top-pad*2-extra*3 || y > rrDlv.top+extra) return false;
	return true;
}

void DlvDragger::Drag(const int, const int y) const
{
	RECT rrDlv;
	Require(GetRelativeRect(g_dlv->hWnd, &rrDlv));

	if (y < Dpi(50) || y > rrDlv.bottom-Dpi(20)) return;

	int h;
	h = rrDlv.bottom-y;
	g_dlv->SetHeight(h);
	UpdateLayout();
	RedrawWindow(g_hWnd, nullptr, nullptr,
	    RDW_ERASE|RDW_FRAME|RDW_INVALIDATE|RDW_ALLCHILDREN|RDW_UPDATENOW);
}

void DlvDragger::Reset() const
{
	g_dlv->SetHeight(0);
	Pl("cfg","set_dlv_height",0);
	UpdateLayout();
}

void DlvDragger::Done() const
{
	Pl("cfg","set_dlv_height",g_dlv->Height());
}