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hammer/ToolPointHandle.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================//
+
+#include "stdafx.h"
+#include "History.h"
+#include "MainFrm.h"			// FIXME: For ObjectProperties
+#include "MapDoc.h"
+#include "MapView2D.h"
+#include "MapPointHandle.h"
+#include "PopupMenus.h"
+#include "Render2D.h"
+#include "StatusBarIDs.h"		// For SetStatusText
+#include "ToolManager.h"
+#include "ToolPointHandle.h"
+#include "Selection.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include <tier0/memdbgon.h>
+
+
+class CToolPointHandleMsgWnd : public CWnd
+{
+	public:
+
+		bool Create(void);
+		void PreMenu2D(CToolPointHandle *pTool, CMapView2D *pView);
+
+	protected:
+
+		//{{AFX_MSG_MAP(CToolPointHandleMsgWnd)
+		afx_msg void OnCenter();
+		//}}AFX_MSG
+	
+		DECLARE_MESSAGE_MAP()
+
+	private:
+
+		CToolPointHandle *m_pToolPointHandle;
+		CMapView2D *m_pView2D;
+};
+
+
+static CToolPointHandleMsgWnd s_wndToolMessage;
+static const char *g_pszClassName = "ValveEditor_PointHandleToolWnd";
+
+
+BEGIN_MESSAGE_MAP(CToolPointHandleMsgWnd, CWnd)
+	//{{AFX_MSG_MAP(CToolPointHandleMsgWnd)
+	ON_COMMAND(ID_CENTER_ON_ENTITY, OnCenter)
+	//}}AFX_MSG_MAP
+END_MESSAGE_MAP()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Creates the hidden window that receives context menu commands for the
+//			block tool.
+// Output : Returns true on success, false on failure.
+//-----------------------------------------------------------------------------
+bool CToolPointHandleMsgWnd::Create(void)
+{
+	WNDCLASS wndcls;
+	memset(&wndcls, 0, sizeof(WNDCLASS));
+    wndcls.lpfnWndProc   = AfxWndProc;
+    wndcls.hInstance     = AfxGetInstanceHandle();
+    wndcls.lpszClassName = g_pszClassName;
+
+	if (!AfxRegisterClass(&wndcls))
+	{
+		return(false);
+	}
+
+	return(CWnd::CreateEx(0, g_pszClassName, g_pszClassName, 0, CRect(0, 0, 10, 10), NULL, 0) == TRUE);
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Attaches the tool to this window before activating the context menu.
+//-----------------------------------------------------------------------------
+void CToolPointHandleMsgWnd::PreMenu2D(CToolPointHandle *pToolPointHandle, CMapView2D *pView)
+{
+	Assert(pToolPointHandle != NULL);
+	m_pToolPointHandle = pToolPointHandle;
+	m_pView2D = pView;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CToolPointHandleMsgWnd::OnCenter()
+{
+	if (m_pToolPointHandle)
+	{
+		m_pToolPointHandle->CenterOnParent(m_pView2D);
+	}
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Constructor.
+//-----------------------------------------------------------------------------
+CToolPointHandle::CToolPointHandle(void)
+{
+	m_pPoint = NULL;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Attaches the point to the tool for manipulation.
+//-----------------------------------------------------------------------------
+void CToolPointHandle::Attach(CMapPointHandle *pPoint)
+{
+	m_pPoint = pPoint;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Handles left button down events in the 2D view.
+// Input  : Per CWnd::OnLButtonDown.
+// Output : Returns true if the message was handled, false if not.
+//-----------------------------------------------------------------------------
+bool CToolPointHandle::OnLMouseDown2D(CMapView2D *pView, UINT nFlags, const Vector2D &VPoint)
+{
+	//
+	// Activate this tool and start dragging the axis endpoint.
+	//
+	ToolManager()->PushTool(TOOL_POINT_HANDLE);
+	pView->SetCapture();
+
+	GetHistory()->MarkUndoPosition( m_pDocument->GetSelection()->GetList(), "Modify Origin");
+	GetHistory()->Keep(m_pPoint);
+	return true;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Handles left button up events in the 2D view.
+// Input  : Per CWnd::OnLButtonUp.
+// Output : Returns true if the message was handled, false if not.
+//-----------------------------------------------------------------------------
+bool CToolPointHandle::OnLMouseUp2D(CMapView2D *pView, UINT nFlags, const Vector2D &VPoint)
+{
+	m_pPoint->UpdateOrigin(m_pPoint->m_Origin);
+
+	ToolManager()->PopTool();
+	ReleaseCapture();
+
+	m_pDocument->UpdateAllViews( MAPVIEW_UPDATE_TOOL );
+	
+	return true;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Handles mouse move events in the 2D view.
+// Input  : Per CWnd::OnMouseMove.
+// Output : Returns true if the message was handled, false if not.
+//-----------------------------------------------------------------------------
+bool CToolPointHandle::OnMouseMove2D(CMapView2D *pView, UINT nFlags, const Vector2D &vPoint)
+{
+	//
+	// Make sure the point is visible.
+	//
+	pView->ToolScrollToPoint( vPoint );
+
+	//
+	// Snap the point to half the grid size. Do this so that we can always center
+	// the origin even on odd-width objects.
+	//
+	Vector vecWorld;
+	pView->ClientToWorld(vecWorld, vPoint);
+
+	m_pDocument->Snap(vecWorld, constrainHalfSnap);
+
+	//
+	// Move to the snapped position.
+	//
+	m_pPoint->m_Origin[pView->axHorz] = vecWorld[pView->axHorz];
+	m_pPoint->m_Origin[pView->axVert] = vecWorld[pView->axVert];
+	
+	//
+	// Update the status bar and the views.
+	//
+	char szBuf[128];
+	sprintf(szBuf, " @%.0f, %.0f ", m_pPoint->m_Origin[pView->axHorz], m_pPoint->m_Origin[pView->axVert]);
+	SetStatusText(SBI_COORDS, szBuf);
+
+	m_pDocument->UpdateAllViews( MAPVIEW_UPDATE_TOOL );
+
+	return true;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Renders the tool in the 2D view.
+// Input  : pRender - The interface to use for rendering.
+//-----------------------------------------------------------------------------
+void CToolPointHandle::RenderTool2D(CRender2D *pRender)
+{
+	SelectionState_t eState = m_pPoint->SetSelectionState(SELECT_MODIFY);
+	m_pPoint->Render2D(pRender);
+	m_pPoint->SetSelectionState(eState);
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : *pView - 
+//			point - 
+// Output : Returns true on success, false on failure.
+//-----------------------------------------------------------------------------
+bool CToolPointHandle::OnContextMenu2D(CMapView2D *pView, UINT nFlags, const Vector2D &vPoint)
+{
+	static CMenu menu, menuCreate;
+	static bool bInit = false;
+
+	if (!bInit)
+	{
+		bInit = true;
+
+		// Create the menu.
+		menu.LoadMenu(IDR_POPUPS);
+		menuCreate.Attach(::GetSubMenu(menu.m_hMenu, IDM_POPUP_POINT_HANDLE));
+
+		// Create the window that handles menu messages.
+		s_wndToolMessage.Create();
+	}
+
+	if (!pView->PointInClientRect(vPoint) )
+	{
+		return false;
+	}
+
+	CPoint ptScreen( vPoint.x,vPoint.y);
+	pView->ClientToScreen(&ptScreen);
+
+	s_wndToolMessage.PreMenu2D(this, pView);
+	menuCreate.TrackPopupMenu(TPM_LEFTBUTTON | TPM_RIGHTBUTTON | TPM_LEFTALIGN, ptScreen.x, ptScreen.y, &s_wndToolMessage);
+
+	return true;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CToolPointHandle::CenterOnParent(CMapView *pView)
+{
+	if (m_pPoint)
+	{
+		GetHistory()->MarkUndoPosition(m_pDocument->GetSelection()->GetList(), "Center Origin");
+		GetHistory()->Keep(m_pPoint);
+
+		CMapClass *pParent = m_pPoint->GetParent();
+
+		Vector vecCenter;
+		pParent->GetBoundsCenter(vecCenter);
+		m_pPoint->UpdateOrigin(vecCenter);
+		m_pDocument->UpdateAllViews( MAPVIEW_UPDATE_TOOL );
+	}
+}
+