// xyzoomscrollDlg.cpp : implementation file
//
#include "stdafx.h"
#include "xyzoomscroll.h"
#include "xyzoomscrollDlg.h"
#include "HotSpotDlg.h"
#include "chartdir.h"
#include <sstream>
#include <algorithm>
using namespace std;
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
/////////////////////////////////////////////////////////////////////////////
// CXyzoomscrollDlg dialog
//
// Constructor
//
CXyzoomscrollDlg::CXyzoomscrollDlg(CWnd* pParent /*=NULL*/)
: CDialog(CXyzoomscrollDlg::IDD, pParent)
{
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
//
// Destructor
//
CXyzoomscrollDlg::~CXyzoomscrollDlg()
{
delete m_ChartViewer.getChart();
}
void CXyzoomscrollDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CXyzoomscrollDlg)
DDX_Control(pDX, IDC_PointerPB, m_PointerPB);
DDX_Control(pDX, IDC_NavigatePad, m_NavigatePad);
DDX_Control(pDX, IDC_NavigateWindow, m_NavigateWindow);
DDX_Control(pDX, IDC_ZoomBar, m_ZoomBar);
DDX_Control(pDX, IDC_ChartViewer, m_ChartViewer);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CXyzoomscrollDlg, CDialog)
//{{AFX_MSG_MAP(CXyzoomscrollDlg)
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_PointerPB, OnPointerPB)
ON_BN_CLICKED(IDC_ZoomInPB, OnZoomInPB)
ON_BN_CLICKED(IDC_ZoomOutPB, OnZoomOutPB)
ON_WM_HSCROLL()
ON_WM_MOUSEWHEEL()
ON_BN_CLICKED(IDC_NavigateWindow, OnNavigateWindow)
ON_BN_CLICKED(IDC_ChartViewer, OnChartViewer)
ON_CONTROL(CVN_ViewPortChanged, IDC_ChartViewer, OnViewPortChanged)
ON_CONTROL(CVN_MouseMovePlotArea, IDC_ChartViewer, OnMouseMovePlotArea)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CXyzoomscrollDlg message handlers
//
// Initialization
//
BOOL CXyzoomscrollDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// *** code automatically generated by VC++ MFC AppWizard ***
// Set the icon for this dialog. The framework does this automatically
// when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon
//
// Initialize member variables
//
m_extBgColor = getDefaultBgColor(); // Default background color
//
// Initialize controls
//
// Load icons to mouse usage buttons
loadButtonIcon(IDC_PointerPB, IDI_PointerPB, 100, 20);
loadButtonIcon(IDC_ZoomInPB, IDI_ZoomInPB, 100, 20);
loadButtonIcon(IDC_ZoomOutPB, IDI_ZoomOutPB, 100, 20);
// Set Pointer pushbutton into clicked state
m_PointerPB.SetCheck(1);
// Initialize zoom bar
m_ZoomBar.SetRange(1, 100);
m_ZoomBar.SetPageSize(5);
m_ZoomBar.SetTicFreq(10);
// Set initial mouse usage for ChartViewer
m_ChartViewer.setMouseUsage(Chart::MouseUsageScroll);
m_ChartViewer.setScrollDirection(Chart::DirectionHorizontalVertical);
m_ChartViewer.setZoomDirection(Chart::DirectionHorizontalVertical);
// Display the chart
m_ChartViewer.updateViewPort(true, true);
return TRUE;
}
// *** code automatically generated by VC++ MFC AppWizard ***
// If you add a minimize button to your dialog, you will need the code below
// to draw the icon. For MFC applications using the document/view model,
// this is automatically done for you by the framework.
void CXyzoomscrollDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting
SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
// Center icon in client rectangle
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;
// Draw the icon
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialog::OnPaint();
}
}
// *** code automatically generated by VC++ MFC AppWizard ***
// The system calls this to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CXyzoomscrollDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
//
// User clicks on the Pointer pushbutton
//
void CXyzoomscrollDlg::OnPointerPB()
{
m_ChartViewer.setMouseUsage(Chart::MouseUsageScroll);
}
//
// User clicks on the Zoom In pushbutton
//
void CXyzoomscrollDlg::OnZoomInPB()
{
m_ChartViewer.setMouseUsage(Chart::MouseUsageZoomIn);
}
//
// User clicks on the Zoom Out pushbutton
//
void CXyzoomscrollDlg::OnZoomOutPB()
{
m_ChartViewer.setMouseUsage(Chart::MouseUsageZoomOut);
}
//
// The ViewPortChanged event handler. This event occurs if the user scrolls or zooms in or
// out the chart by dragging or clicking on the chart. It can also be triggered by calling
// CChartViewer.updateViewPort.
//
void CXyzoomscrollDlg::OnViewPortChanged()
{
// In addition to updating the chart, we may also need to update other controls that
// changes based on the view port.
updateControls(&m_ChartViewer);
// Update the chart if necessary
if (m_ChartViewer.needUpdateChart())
drawChart(&m_ChartViewer);
// Update the image map if necessary
if (m_ChartViewer.needUpdateImageMap())
updateImageMap(&m_ChartViewer);
// We need to update the track line too. If the mouse is moving on the chart (eg. if
// the user drags the mouse on the chart to scroll it), the track line will be updated
// in the MouseMovePlotArea event. Otherwise, we need to update the track line here.
if ((!m_ChartViewer.isInMouseMoveEvent()) && m_ChartViewer.isMouseOnPlotArea())
{
crossHair((XYChart *)m_ChartViewer.getChart(), m_ChartViewer.getPlotAreaMouseX(),
m_ChartViewer.getPlotAreaMouseY());
m_ChartViewer.updateDisplay();
}
}
//
// The mouse wheel handler
//
BOOL CXyzoomscrollDlg::OnMouseWheel(UINT nFlags, short zDelta, CPoint pt)
{
// Process the mouse wheel only if the mouse is over the plot area
if (!m_ChartViewer.isMouseOnPlotArea())
return FALSE;
// We zoom in or out by 10% depending on the mouse wheel direction.
double newVpWidth = m_ChartViewer.getViewPortWidth() * (zDelta > 0 ? 0.9 : 1 / 0.9);
double newVpHeight = m_ChartViewer.getViewPortHeight() * (zDelta > 0 ? 0.9 : 1 / 0.9);
// We do not zoom beyond the zoom width or height limits.
newVpWidth = max(m_ChartViewer.getZoomInWidthLimit(), min(newVpWidth,
m_ChartViewer.getZoomOutWidthLimit()));
newVpHeight = max(m_ChartViewer.getZoomInHeightLimit(), min(newVpWidth,
m_ChartViewer.getZoomOutHeightLimit()));
if ((newVpWidth != m_ChartViewer.getViewPortWidth()) ||
(newVpHeight != m_ChartViewer.getViewPortHeight()))
{
// Set the view port position and size so that the point under the mouse remains under
// the mouse after zooming.
double deltaX = (m_ChartViewer.getPlotAreaMouseX() - m_ChartViewer.getPlotAreaLeft()) *
(m_ChartViewer.getViewPortWidth() - newVpWidth) / m_ChartViewer.getPlotAreaWidth();
m_ChartViewer.setViewPortLeft(m_ChartViewer.getViewPortLeft() + deltaX);
m_ChartViewer.setViewPortWidth(newVpWidth);
double deltaY = (m_ChartViewer.getPlotAreaMouseY() - m_ChartViewer.getPlotAreaTop()) *
(m_ChartViewer.getViewPortHeight() - newVpHeight) / m_ChartViewer.getPlotAreaHeight();
m_ChartViewer.setViewPortTop(m_ChartViewer.getViewPortTop() + deltaY);
m_ChartViewer.setViewPortHeight(newVpHeight);
m_ChartViewer.updateViewPort(true, false);
}
return TRUE;
}
//
// Draw track cursor when mouse is moving over plotarea, and update image map if necessary
//
void CXyzoomscrollDlg::OnMouseMovePlotArea()
{
// Get the focus to ensure being able to receive mouse wheel events
m_ChartViewer.SetFocus();
// Draw crosshair track cursor
crossHair((XYChart *)m_ChartViewer.getChart(), m_ChartViewer.getPlotAreaMouseX(),
m_ChartViewer.getPlotAreaMouseY());
m_ChartViewer.updateDisplay();
// Hide the track cursor when the mouse leaves the plot area
m_ChartViewer.removeDynamicLayer(CVN_MouseLeavePlotArea);
// Update image map if necessary
updateImageMap(&m_ChartViewer);
}
//
// User moves the Zoom slider control
//
void CXyzoomscrollDlg::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)
{
if (nSBCode != SB_ENDSCROLL)
{
//
// The slider is moving. Update the chart.
//
// Remember the center point
double centerX = m_ChartViewer.getViewPortLeft() +
m_ChartViewer.getViewPortWidth() / 2;
double centerY = m_ChartViewer.getViewPortTop() +
m_ChartViewer.getViewPortHeight() / 2;
// Aspect ratio and zoom factor
double aspectRatio = m_ChartViewer.getViewPortWidth() /
m_ChartViewer.getViewPortHeight();
double zoomTo = ((double)m_ZoomBar.GetPos()) / m_ZoomBar.GetRangeMax();
// Zoom by adjusting ViewPortWidth and ViewPortHeight while maintaining the aspect
// ratio
m_ChartViewer.setViewPortWidth(zoomTo * ((aspectRatio < 1) ? 1 : aspectRatio));
m_ChartViewer.setViewPortHeight(zoomTo * ((aspectRatio > 1) ? 1 : (1 / aspectRatio)));
// Adjust ViewPortLeft and ViewPortTop to keep center point unchanged
m_ChartViewer.setViewPortLeft(centerX - m_ChartViewer.getViewPortWidth() / 2);
m_ChartViewer.setViewPortTop(centerY - m_ChartViewer.getViewPortHeight() / 2);
// Update the chart image only, but no need to update the image map.
m_ChartViewer.updateViewPort(true, false);
}
CDialog::OnHScroll(nSBCode, nPos, pScrollBar);
}
//
// User drags the navigate window
//
void CXyzoomscrollDlg::OnNavigateWindow()
{
if (m_NavigateWindow.IsMouseDrag())
{
//
// Get the position of the navigate window inside the navigate pad as a ratio between
// 0 - 1. (Note: we allowed for a 2-pixel margin for the frame border in the following
// computations.)
//
CRect windowPos;
m_NavigateWindow.GetWindowRect(&windowPos);
CRect containerPos;
m_NavigatePad.GetWindowRect(&containerPos);
double viewPortLeft = ((double)windowPos.left + m_NavigateWindow.GetMouseDragPos().x
- m_NavigateWindow.GetMouseDownPos().x - containerPos.left - 2) /
(containerPos.Width() - 4);
double viewPortTop = ((double)windowPos.top + m_NavigateWindow.GetMouseDragPos().y
- m_NavigateWindow.GetMouseDownPos().y - containerPos.top - 2) /
(containerPos.Height() - 4);
//
// Ensures the view port is within valid range.
//
viewPortLeft = max(0.0, min(viewPortLeft, 1 - m_ChartViewer.getViewPortWidth()));
viewPortTop = max(0.0, min(viewPortTop, 1 - m_ChartViewer.getViewPortHeight()));
//
// Update the chart view port
//
m_ChartViewer.setViewPortLeft(viewPortLeft);
m_ChartViewer.setViewPortTop(viewPortTop);
// Update the chart image only, but no need to update the image map.
m_ChartViewer.updateViewPort(true, false);
}
}
//
// User clicks on the CChartViewer
//
void CXyzoomscrollDlg::OnChartViewer()
{
ImageMapHandler *handler = m_ChartViewer.getImageMapHandler();
if (0 != handler)
{
//
// Query the ImageMapHandler to see if the mouse is on a clickable hot spot. We
// consider the hot spot as clickable if its href ("path") parameter is not empty.
//
const char *path = handler->getValue("path");
if ((0 != path) && (0 != *path))
{
// In this sample code, we just show all hot spot parameters.
CHotSpotDlg hs;
hs.SetData(handler);
hs.DoModal();
}
}
}
/////////////////////////////////////////////////////////////////////////////
// CXyzoomscrollDlg methods
//
// Draw the chart and display it in the given viewer
//
void CXyzoomscrollDlg::drawChart(CChartViewer *viewer)
{
//
// For simplicity, in this demo, we just use hard coded data. In a real application,
// the data probably read from a dynamic source such as a database. (See the
// ChartDirector documentation on "Using Data Sources with ChartDirector" if you need
// some sample code on how to read data from database to array variables.)
//
double dataX0[] = {10, 15, 6, -12, 14, -8, 13, -3, 16, 12, 10.5, -7, 3, -10, -5, 2, 5};
double dataY0[] = {130, 150, 80, 110, -110, -105, -130, -15, -170, 125, 125, 60, 25, 150,
150,15, 120};
double dataX1[] = {6, 7, -4, 3.5, 7, 8, -9, -10, -12, 11, 8, -3, -2, 8, 4, -15, 15};
double dataY1[] = {65, -40, -40, 45, -70, -80, 80, 10, -100, 105, 60, 50, 20, 170, -25,
50, 75};
double dataX2[] = {-10, -12, 11, 8, 6, 12, -4, 3.5, 7, 8, -9, 3, -13, 16, -7.5, -10, -15};
double dataY2[] = {65, -80, -40, 45, -70, -80, 80, 90, -100, 105, 60, -75, -150, -40, 120,
-50, -30};
// Create an XYChart object 500 x 480 pixels in size, with the same background color
// as the container
XYChart *c = new XYChart(500, 480, m_extBgColor);
// Set the plotarea at (50, 40) and of size 400 x 400 pixels. Use light grey (c0c0c0)
// horizontal and vertical grid lines. Set 4 quadrant coloring, where the colors of
// the quadrants alternate between lighter and deeper grey (dddddd/eeeeee).
c->setPlotArea(50, 40, 400, 400, -1, -1, -1, 0xc0c0c0, 0xc0c0c0
)->set4QBgColor(0xdddddd, 0xeeeeee, 0xdddddd, 0xeeeeee, 0x000000);
// Enable clipping mode to clip the part of the data that is outside the plot area.
c->setClipping();
// Set 4 quadrant mode, with both x and y axes symetrical around the origin
c->setAxisAtOrigin(Chart::XYAxisAtOrigin, Chart::XAxisSymmetric + Chart::YAxisSymmetric);
// Add a legend box at (450, 40) (top right corner of the chart) with vertical layout
// and 8 pts Arial Bold font. Set the background color to semi-transparent grey.
LegendBox *legendBox = c->addLegend(450, 40, true, "arialbd.ttf", 8);
legendBox->setAlignment(Chart::TopRight);
legendBox->setBackground(0x40dddddd);
// Add a titles to axes
c->xAxis()->setTitle("Alpha Index");
c->yAxis()->setTitle("Beta Index");
// Set axes width to 2 pixels
c->xAxis()->setWidth(2);
c->yAxis()->setWidth(2);
// The default ChartDirector settings has a denser y-axis grid spacing and less-dense
// x-axis grid spacing. In this demo, we want the tick spacing to be symmetrical.
// We use around 50 pixels between major ticks and 25 pixels between minor ticks.
c->xAxis()->setTickDensity(50, 25);
c->yAxis()->setTickDensity(50, 25);
//
// In this example, we represent the data by scatter points. If you want to represent
// the data by somethings else (lines, bars, areas, floating boxes, etc), just modify
// the code below to use the layer type of your choice.
//
// Add scatter layer, using 11 pixels red (ff33333) X shape symbols
c->addScatterLayer(DoubleArray(dataX0, sizeof(dataX0) / sizeof(dataX0[0])),
DoubleArray(dataY0, sizeof(dataY0) / sizeof(dataY0[0])), "Group A",
Chart::Cross2Shape(), 11, 0xff3333);
// Add scatter layer, using 11 pixels green (33ff33) circle symbols
c->addScatterLayer(DoubleArray(dataX1, sizeof(dataX1) / sizeof(dataX1[0])),
DoubleArray(dataY1, sizeof(dataY1) / sizeof(dataY1[0])),
"Group B", Chart::CircleShape, 11, 0x33ff33);
// Add scatter layer, using 11 pixels blue (3333ff) triangle symbols
c->addScatterLayer(DoubleArray(dataX2, sizeof(dataX2) / sizeof(dataX2[0])),
DoubleArray(dataY2, sizeof(dataY2) / sizeof(dataY2[0])),
"Group C", Chart::TriangleSymbol, 11, 0x3333ff);
//
// In this example, we have not explicitly configured the full x and y range. In this case,
// the first time syncLinearAxisWithViewPort is called, ChartDirector will auto-scale the axis
// and assume the resulting range is the full range. In subsequent calls, ChartDirector will
// set the axis range based on the view port and the full range.
//
viewer->syncLinearAxisWithViewPort("x", c->xAxis());
viewer->syncLinearAxisWithViewPort("y", c->yAxis());
// Set the chart image to the WinChartViewer
delete viewer->getChart();
viewer->setChart(c);
}
//
// Draw cross hair cursor with axis labels
//
void CXyzoomscrollDlg::crossHair(XYChart *c, int mouseX, int mouseY)
{
// Clear the current dynamic layer and get the DrawArea object to draw on it.
DrawArea *d = c->initDynamicLayer();
// The plot area object
PlotArea *plotArea = c->getPlotArea();
// Draw a vertical line and a horizontal line as the cross hair
d->vline(plotArea->getTopY(), plotArea->getBottomY(), mouseX, d->dashLineColor(0x000000, 0x0101));
d->hline(plotArea->getLeftX(), plotArea->getRightX(), mouseY, d->dashLineColor(0x000000, 0x0101));
// Draw y-axis label
ostringstream ylabel;
ylabel << "<*block,bgColor=FFFFDD,margin=3,edgeColor=000000*>" << c->formatValue(c->getYValue(
mouseY, c->yAxis()), "{value|P4}") << "<*/*>";
TTFText *t = d->text(ylabel.str().c_str(), "arialbd.ttf", 8);
t->draw(plotArea->getLeftX() - 5, mouseY, 0x000000, Chart::Right);
t->destroy();
// Draw x-axis label
ostringstream xlabel;
xlabel << "<*block,bgColor=FFFFDD,margin=3,edgeColor=000000*>" << c->formatValue(c->getXValue(
mouseX), "{value|P4}") << "<*/*>";
t = d->text(xlabel.str().c_str(), "arialbd.ttf", 8);
t->draw(mouseX, plotArea->getBottomY() + 5, 0x000000, Chart::Top);
t->destroy();
}
//
// Update the image map
//
void CXyzoomscrollDlg::updateImageMap(CChartViewer *viewer)
{
if (0 == viewer->getImageMapHandler())
{
// no existing image map - creates a new one
viewer->setImageMap(viewer->getChart()->getHTMLImageMap("clickable", "",
"title='[{dataSetName}] Alpha = {x}, Beta = {value}'"));
}
}
//
// Update the image map
//
void CXyzoomscrollDlg::updateControls(CChartViewer *viewer)
{
//
// Update the Zoom slider to reflect the current zoom level of the view port
//
double smallerSide = viewer->getViewPortWidth() > viewer->getViewPortHeight()
? viewer->getViewPortHeight() : viewer->getViewPortWidth();
m_ZoomBar.SetPos((int)(smallerSide * m_ZoomBar.GetRangeMax() + 0.5));
//
// Update the navigate window to reflect the current view port position and size. (Note:
// we allowed for a 2-pixel margin for the frame border in the following computations.)
//
CRect container;
m_NavigatePad.GetWindowRect(&container);
ScreenToClient(&container);
int left = (int)(viewer->getViewPortLeft() * (container.Width() - 4) + 2 + 0.5);
int top = (int)(viewer->getViewPortTop() * (container.Height() - 4) + 2 + 0.5);
int width = (int)(viewer->getViewPortWidth() * (container.Width() - 4) + 0.5);
int height = (int)(viewer->getViewPortHeight() * (container.Height() - 4) + 0.5);
m_NavigateWindow.MoveWindow(left + container.left, container.top + top, width, height);
}
/////////////////////////////////////////////////////////////////////////////
// General utilities
//
// Get the default background color
//
int CXyzoomscrollDlg::getDefaultBgColor()
{
LOGBRUSH LogBrush;
HBRUSH hBrush = (HBRUSH)SendMessage(WM_CTLCOLORDLG, (WPARAM)CClientDC(this).m_hDC,
(LPARAM)m_hWnd);
::GetObject(hBrush, sizeof(LOGBRUSH), &LogBrush);
int ret = LogBrush.lbColor;
return ((ret & 0xff) << 16) | (ret & 0xff00) | ((ret & 0xff0000) >> 16);
}
//
// Load an icon resource into a button
//
void CXyzoomscrollDlg::loadButtonIcon(int buttonId, int iconId, int width, int height)
{
GetDlgItem(buttonId)->SendMessage(BM_SETIMAGE, IMAGE_ICON, (LPARAM)::LoadImage(
AfxGetResourceHandle(), MAKEINTRESOURCE(iconId), IMAGE_ICON, width, height,
LR_DEFAULTCOLOR));
} |