Use global Window object.

This makes it easier to control initialization and maintain RAII.

1 files changed, 69 insertions, 21 deletions

diff --git a/c/layout.cpp b/c/layout.cpp
index 23ee490..e817b23 100644
--- a/c/layout.cpp
+++ b/c/layout.cpp
@@ -3,12 +3,11 @@
 #include "episodelistview.h"
 #include "datalistview.h"
 #include "layout.h"
+#include "main.h"
 #include "win.h"
 
-extern HWND g_hWnd;
+extern Window* g_window;
 extern HWND g_hWndStatus;
-extern EpisodeListView* g_elv;
-extern DataListView* g_dlv;
 
 void UpdateLayout(int w, int h)
 {
@@ -16,33 +15,84 @@ void UpdateLayout(int w, int h)
 
 	RECT rc, rrStatus;
 	if (w && h) rc = {0, 0, w, h};
-	else Require(GetClientRect(g_hWnd, &rc));
+	else Require(GetClientRect(g_window->hWnd, &rc));
 	Require(GetRelativeRect(g_hWndStatus, &rrStatus));
 
-	SendMessageW(g_hWnd, WM_SETREDRAW, FALSE, 0);
+	SendMessageW(g_window->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);
+	const long cyDlv = rrStatus.top-g_window->dlv.Height()-pad;
+	Require(SetWindowRect(g_window->dlv.hWnd, pad, cyDlv, rc.right-pad, rrStatus.top-pad));
+	Require(SetWindowRect(g_window->elv.hWnd, pad, pad, rc.right-pad, cyDlv-pad));
+	g_window->dlv.ResizeColumns(rc.right-pad-pad);
+	g_window->elv.ResizeColumns(rc.right-pad-pad);
 
 	/* Resize status bar parts. */
 	const int aParts[] = {rc.right-Dpi(55), rc.right};
 	SendMessageW(g_hWndStatus, SB_SETPARTS,
 	    sizeof(aParts), reinterpret_cast<LPARAM>(aParts));
 
-	SendMessageW(g_hWnd, WM_SETREDRAW, TRUE, 0);
-	RedrawWindow(g_hWnd, nullptr, nullptr,
+	SendMessageW(g_window->hWnd, WM_SETREDRAW, TRUE, 0);
+	RedrawWindow(g_window->hWnd, nullptr, nullptr,
 	    RDW_ERASE|RDW_FRAME|RDW_INVALIDATE|RDW_ALLCHILDREN);
 }
 
+bool Dragger::IsDouble(const long time, const POINT& pt)
+{
+	const bool dbl = time-m_time0 <= static_cast<long>(GetDoubleClickTime())
+	&& abs(pt.x-m_pt0.x) <= Metric<SM_CXDOUBLECLK>
+	&& abs(pt.y-m_pt0.y) <= Metric<SM_CYDOUBLECLK>;
+	m_time0 = time;
+	m_pt0 = std::move(pt);
+	return dbl;
+}
+
+bool Dragger::IsDown() const
+{
+	return GetKeyState(VK_LBUTTON) & 0x8000;
+}
+
+bool Dragger::HandleLButtonDown()
+{
+	POINT pt;
+	Require(GetRelativeCursorPos(parent.hWnd, &pt));
+	if (!InDragArea(pt.x, pt.y)) return false;
+
+	if (IsDouble(GetMessageTime(), pt)) {
+		m_bActive = false;
+		Reset();
+	} else
+		m_bActive = true;
+
+	return m_bActive;
+}
+
+bool Dragger::HandleSetCursor()
+{
+	POINT pt;
+	Require(GetRelativeCursorPos(parent.hWnd, &pt));
+
+	extern HCURSOR g_hcSizeNs;
+	bool r = true;
+	if (InDragArea(pt.x, pt.y))
+		SetCursor(g_hcSizeNs);
+	else
+		r = false;
+	if (!m_bActive)
+		return r;
+	Drag(pt.x, pt.y);
+	if (!IsDown()) {
+		m_bActive = false;
+		Done();
+	}
+	return r;
+}
+
 bool DlvDragger::InDragArea(const int x, const int y) const
 {
 	RECT rrDlv;
-	Require(GetRelativeRect(g_dlv->hWnd, &rrDlv));
+	Require(GetRelativeRect(g_window->dlv.hWnd, &rrDlv));
 
 	const int pad = EBIsThemeActive()? Dpi(6): 0;
 	const int extra = EBIsThemeActive()? 0: Dpi(2);
@@ -54,28 +104,26 @@ bool DlvDragger::InDragArea(const int x, const int y) const
 void DlvDragger::Drag(const int, const int y) const
 {
 	RECT rrDlv;
-	Require(GetRelativeRect(g_dlv->hWnd, &rrDlv));
+	Require(GetRelativeRect(g_window->dlv.hWnd, &rrDlv));
 
 	if (y < Dpi(50) || y > rrDlv.bottom-Dpi(20)) return;
 
 	int h;
 	h = rrDlv.bottom-y;
-	g_dlv->SetHeight(h);
+	g_window->dlv.SetHeight(h);
 	UpdateLayout();
-	RedrawWindow(g_hWnd, nullptr, nullptr,
+	RedrawWindow(g_window->hWnd, nullptr, nullptr,
 	    RDW_ERASE|RDW_FRAME|RDW_INVALIDATE|RDW_ALLCHILDREN|RDW_UPDATENOW);
 }
 
 void DlvDragger::Reset() const
 {
-	extern CfgA& g_cfg;
-	g_dlv->SetHeight(0);
-	g_cfg.heightDlv = 0;
+	g_window->dlv.SetHeight(0);
+	g_window->cfg.heightDlv = 0;
 	UpdateLayout();
 }
 
 void DlvDragger::Done() const
 {
-	extern CfgA& g_cfg;
-	g_cfg.heightDlv = g_dlv->Height();
+	g_window->cfg.heightDlv = g_window->dlv.Height();
 }