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Added a way to overlay a grid to graph window

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This commit is contained in:
d18c7db 2009-07-20 08:20:23 +00:00
commit bd4cc2c95b
4 changed files with 134 additions and 111 deletions
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88
winsrc/gui.cpp
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@ -34,12 +34,13 @@ void dbp(char *str, ...)
int GraphBuffer[MAX_GRAPH_TRACE_LEN];
int GraphTraceLen;
HPEN GreyPen, GreenPen, WhitePen, YellowPen;
HPEN GreyPenLite, GreyPen, GreenPen, WhitePen, YellowPen;
HBRUSH GreenBrush, YellowBrush;
static int GraphStart = 0;
static double GraphPixelsPerPoint = 1;
static int PlotGridX = 0, PlotGridY = 0;
static int CursorAPos;
static int CursorBPos;
double CursorScaleFactor = 1.0;
@ -61,11 +62,17 @@ static HFONT MyFixedFont;
void ExecCmd(char *cmd)
{
}
int CommandFinished;
int offset = 64;
void SetGraphGrid(int x, int y)
{
PlotGridX = x;
PlotGridY = y;
}
static void ResizeCommandWindow(void)
{
int w, h;
@ -108,43 +115,63 @@ static LRESULT CALLBACK
static void PaintGraph(HDC hdc)
{
RECT r;
HBRUSH brush;
HPEN pen;
char str[250];
int yMin = INT_MAX;
int yMax = INT_MIN;
int yMean = 0;
int startMax = 0;
int absYMax = 1;
int n = 0, i = 0;
brush = GreenBrush;
pen = GreenPen;
if(GraphStart < 0) {
GraphStart = 0;
}
RECT r;
GetClientRect(GraphWindow, &r);
int zeroHeight = (r.top + r.bottom) >> 1;
// plot X and Y grid lines
if ((PlotGridX > 0) && ((PlotGridX * GraphPixelsPerPoint) > 1)) {
for(i = offset; i < r.right; i += (int)(PlotGridX * GraphPixelsPerPoint)) {
SelectObject(hdc, GreyPenLite);
MoveToEx(hdc, r.left + i, r.top, NULL);
LineTo(hdc, r.left + i, r.bottom);
}
}
if ((PlotGridY > 0) && ((PlotGridY * GraphPixelsPerPoint) > 1)){
for(i = 0; i < ((r.top + r.bottom)>>1); i += (int)(PlotGridY * GraphPixelsPerPoint)) {
SelectObject(hdc, GreyPenLite);
MoveToEx(hdc, r.left, zeroHeight + i, NULL);
LineTo(hdc, r.right, zeroHeight + i);
MoveToEx(hdc, r.left, zeroHeight - i, NULL);
LineTo(hdc, r.right, zeroHeight - i);
}
}
// print vertical separator white line on the left of the window
SelectObject(hdc, WhitePen);
MoveToEx(hdc, r.left + offset, r.top, NULL);
LineTo(hdc, r.left + offset, r.bottom);
int zeroHeight = r.top + (r.bottom - r.top) / 2;
// print horizontal grey zero axis line
SelectObject(hdc, GreyPen);
MoveToEx(hdc, r.left, zeroHeight, NULL);
LineTo(hdc, r.right, zeroHeight);
int startMax =
(GraphTraceLen - (int)((r.right - r.left - offset) / GraphPixelsPerPoint));
if(startMax < 0) {
startMax = 0;
}
if(GraphStart > startMax) {
GraphStart = startMax;
}
startMax = (GraphTraceLen - (int)((r.right - r.left - offset) / GraphPixelsPerPoint));
// check boundaries
if(startMax < 0) startMax = 0;
if(GraphStart > startMax) GraphStart = startMax;
if(GraphStart < 0) GraphStart = 0;
int absYMax = 1;
SelectObject(hdc, pen);
int i;
// go over the portion of the graph to be displayed and find the largest
// absolute value which will be used to auto scale the graph when displayed
for(i = GraphStart; ; i++) {
if(i >= GraphTraceLen) {
break;
@ -174,11 +201,7 @@ static void PaintGraph(HDC hdc)
if(pointsPerLabel <= 0) pointsPerLabel = 1;
pointsPerLabel = (int)pow(2.0,pointsPerLabel);
int yMin = INT_MAX;
int yMax = INT_MIN;
int yMean = 0;
int n = 0;
// go over the graph and plot samples and labels
for(i = GraphStart; ; i++) {
if(i >= GraphTraceLen) {
break;
@ -189,12 +212,8 @@ static void PaintGraph(HDC hdc)
}
int y = GraphBuffer[i];
if(y < yMin) {
yMin = y;
}
if(y > yMax) {
yMax = y;
}
if(y < yMin) yMin = y;
if(y > yMax) yMax = y;
yMean += y;
n++;
@ -214,13 +233,13 @@ static void PaintGraph(HDC hdc)
FillRect(hdc, &f, brush);
}
// plot labels
if(((i - GraphStart) % pointsPerLabel == 0) && i != GraphStart) {
SelectObject(hdc, WhitePen);
MoveToEx(hdc, x, zeroHeight - 8, NULL);
LineTo(hdc, x, zeroHeight + 8);
char str[100];
sprintf(str, "+%d", (i - GraphStart));
sprintf(str, "+%d", i);
SIZE size;
GetTextExtentPoint32(hdc, str, strlen(str), &size);
TextOut(hdc, x - size.cx, zeroHeight + 8, str, strlen(str));
@ -229,6 +248,7 @@ static void PaintGraph(HDC hdc)
MoveToEx(hdc, x, y, NULL);
}
// plot measurement cursors
if(i == CursorAPos || i == CursorBPos) {
if(i == CursorAPos) {
SelectObject(hdc, CursorAPen);
@ -247,8 +267,7 @@ static void PaintGraph(HDC hdc)
yMean /= n;
}
char str[200];
// print misc information at bottom of graph window
sprintf(str, "@%d max=%d min=%d mean=%d n=%d/%d dt=%d [%.3f] zoom=%.3f CursorA=%d [%d] CursorB=%d [%d]",
GraphStart, yMax, yMin, yMean, n, GraphTraceLen,
CursorBPos - CursorAPos, (CursorBPos - CursorAPos)/CursorScaleFactor, GraphPixelsPerPoint,
@ -438,6 +457,7 @@ void ShowGui()
PrintToScrollback(">> Started prox, built " __DATE__ " " __TIME__);
PrintToScrollback(">> Connected to device");
GreyPenLite = CreatePen(PS_SOLID, 1, RGB(50, 50, 50));
GreyPen = CreatePen(PS_SOLID, 1, RGB(100, 100, 100));
GreenPen = CreatePen(PS_SOLID, 1, RGB(100, 255, 100));
YellowPen = CreatePen(PS_SOLID, 1, RGB(255, 255, 0));