-
Notifications
You must be signed in to change notification settings - Fork 1
/
zoom.c
229 lines (172 loc) · 7.01 KB
/
zoom.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
/*
-------------------------------------------------------------------------
OBJECT NAME: zoom.c
FULL NAME: Drag Zoom & Undo.
ENTRY POINTS: Zoom()
UnZoom()
STATIC FNS: DoTheBox()
DESCRIPTION:
COPYRIGHT: University Corporation for Atmospheric Research, 1997-2022
-------------------------------------------------------------------------
*/
#include "define.h"
#include <stack>
struct zoom_info
{
int saveStartTime[4], saveEndTime[4];
float xMin, xMax, yMin[2], yMax[2];
};
// Corner points from drawing the box.
static int startX = 0, startY = 0;
static int endX = 0, endY = 0;
static std::stack<struct zoom_info> zoom_stack;
struct zoom_info this_zoom;
/* -------------------------------------------------------------------- */
static void DoTheBox(Widget w, XtPointer client, XMotionEvent *evt, Boolean cont2disp)
{
if (evt == NULL)
return;
/* The color that works ok on Solaris doesn't work so good under Linux.
* This should eventually be put in some defaults file along with colors.
* Similar code is in crosshair.c.
*/
#ifdef SVR4
XSetForeground(mainPlot[0].dpy, mainPlot[0].gc, GetColor(2));
#else
XSetForeground(mainPlot[0].dpy, mainPlot[0].gc, GetColor(3));
#endif
XSetLineAttributes(mainPlot[0].dpy, mainPlot[0].gc, 1,
LineSolid, CapButt, JoinMiter);
if (endX != 0 && endY != 0)
XDrawRectangle(mainPlot[0].dpy, XtWindow(mainPlot[0].canvas),mainPlot[0].gc,
startX, startY, endX - startX, endY - startY);
endX = evt->x;
endY = evt->y;
XDrawRectangle(mainPlot[0].dpy, XtWindow(mainPlot[0].canvas), mainPlot[0].gc,
startX, startY, endX - startX, endY - startY);
} /* END DOTHEBOX */
/* -------------------------------------------------------------------- */
void Zoom(Widget w, XtPointer client, XmDrawingAreaCallbackStruct *evt)
{
XButtonEvent *xb = (XButtonEvent *)evt->event;
static bool cancel = false;
if (xb->button != Button1)
return;
if ((xb->state & Button1MotionMask) == 0) // Reset on button pressed.
startX = startY = endX = endY = 0;
if ((xb->state & Button1MotionMask) == 0x100) // Capture box on release.
{
XSetFunction(mainPlot[0].dpy, mainPlot[0].gc, GXcopy);
XtRemoveEventHandler(mainPlot[0].canvas, Button1MotionMask, false,
(XtEventHandler)DoTheBox, NULL);
}
// Keep it in-bounds.
if (xb->x < mainPlot[0].x.LV) xb->x = mainPlot[0].x.LV;
if (xb->x > mainPlot[0].x.RV) xb->x = mainPlot[0].x.RV;
if (xb->y < mainPlot[0].x.TH) xb->y = mainPlot[0].x.TH;
if (xb->y > mainPlot[0].x.BH) xb->y = mainPlot[0].x.BH;
if ((xb->state & Button1MotionMask) != 0)
if (cancel || endX < startX || endY < startY)
return;
if ((xb->state & Button1MotionMask) == 0) // Button pressed.
{
cancel = false;
startX = xb->x;
startY = xb->y;
XSetFunction(mainPlot[0].dpy, mainPlot[0].gc, GXxor);
XtAddEventHandler(mainPlot[0].canvas, Button1MotionMask, false,
(XtEventHandler)DoTheBox, NULL);
}
else if ((xb->state & Button1MotionMask) == 0x100) // Button released.
{
if (abs(startX - xb->x) < 10 || abs(startY - xb->y) < 10)
return;
endX = xb->x;
endY = xb->y;
/* Save off current values for unzoom.
*/
memcpy((void *)this_zoom.saveStartTime, (void *)UserStartTime, 4*sizeof(int));
memcpy((void *)this_zoom.saveEndTime, (void *)UserEndTime, 4*sizeof(int));
if (PlotType == TIME_SERIES)
{
int stpe, etpe;
float pixPerSec;
this_zoom.xMin = mainPlot[0].Xaxis.min;
this_zoom.xMax = mainPlot[0].Xaxis.max;
this_zoom.yMin[0] = mainPlot[0].Yaxis[0].min;
this_zoom.yMax[0] = mainPlot[0].Yaxis[0].max;
this_zoom.yMin[1] = mainPlot[0].Yaxis[1].min;
this_zoom.yMax[1] = mainPlot[0].Yaxis[1].max;
pixPerSec = (float)mainPlot[0].x.HD / NumberSeconds;
stpe = (int)((startX - mainPlot[0].x.LV) / pixPerSec);
etpe = (int)((mainPlot[0].x.RV - endX) / pixPerSec);
if (NumberSeconds > 900) /* 15 minutes. */
{
stpe /= 60; stpe *= 60;
if (etpe != 0) { // don't adjust if at right border.
etpe += 60; etpe /= 60; etpe *= 60;
}
}
ReduceData(stpe, NumberSeconds - stpe - etpe);
if (NumberOfPanels == 1)
{
mainPlot[0].Yaxis[0].min += ((this_zoom.yMax[0] - this_zoom.yMin[0]) *
((float)(mainPlot[0].x.BH - endY) / mainPlot[0].x.VD));
mainPlot[0].Yaxis[0].max -= ((this_zoom.yMax[0] - this_zoom.yMin[0]) *
((float)(startY - mainPlot[0].x.TH) / mainPlot[0].x.VD));
mainPlot[0].Yaxis[1].min += ((this_zoom.yMax[1] - this_zoom.yMin[1]) *
((float)(mainPlot[0].x.BH - endY) / mainPlot[0].x.VD));
mainPlot[0].Yaxis[1].max -= ((this_zoom.yMax[1] - this_zoom.yMin[1]) *
((float)(startY - mainPlot[0].x.TH) / mainPlot[0].x.VD));
}
}
else
{
this_zoom.xMin = xyyPlot[0].Xaxis.min;
this_zoom.xMax = xyyPlot[0].Xaxis.max;
this_zoom.yMin[0] = xyyPlot[0].Yaxis[0].min;
this_zoom.yMax[0] = xyyPlot[0].Yaxis[0].max;
this_zoom.yMin[1] = xyyPlot[0].Yaxis[1].min;
this_zoom.yMax[1] = xyyPlot[0].Yaxis[1].max;
xyyPlot[0].Xaxis.min += ((this_zoom.xMax - this_zoom.xMin) *
((float)(startX - xyyPlot[0].x.LV) / xyyPlot[0].x.HD));
xyyPlot[0].Xaxis.max -= ((this_zoom.xMax - this_zoom.xMin) *
((float)(xyyPlot[0].x.RV - endX) / xyyPlot[0].x.HD));
xyyPlot[0].Yaxis[0].min += ((this_zoom.yMax[0] - this_zoom.yMin[0]) *
((float)(xyyPlot[0].x.BH - endY) / xyyPlot[0].x.VD));
xyyPlot[0].Yaxis[0].max -= ((this_zoom.yMax[0] - this_zoom.yMin[0]) *
((float)(startY - xyyPlot[0].x.TH) / xyyPlot[0].x.VD));
xyyPlot[0].Yaxis[1].min += ((this_zoom.yMax[1] - this_zoom.yMin[1]) *
((float)(xyyPlot[0].x.BH - endY) / xyyPlot[0].x.VD));
xyyPlot[0].Yaxis[1].max -= ((this_zoom.yMax[1] - this_zoom.yMin[1]) *
((float)(startY - xyyPlot[0].x.TH) / xyyPlot[0].x.VD));
}
zoom_stack.push(this_zoom);
DrawMainWindow();
}
else
printf("Zoom: unexpected state encountered = 0x%x\n", xb->state);
} /* END ZOOM */
/* -------------------------------------------------------------------- */
void UnZoom(Widget w, XtPointer client, XmDrawingAreaCallbackStruct *evt)
{
if (zoom_stack.empty())
return;
struct zoom_info top = zoom_stack.top();
mainPlot[0].Xaxis.min = top.xMin;
mainPlot[0].Xaxis.max = top.xMax;
mainPlot[0].Yaxis[0].min = top.yMin[0];
mainPlot[0].Yaxis[0].max = top.yMax[0];
mainPlot[0].Yaxis[1].min = top.yMin[1];
mainPlot[0].Yaxis[1].max = top.yMax[1];
if (memcmp((void *)top.saveStartTime, (void *)UserStartTime, 4*sizeof(int)) ||
memcmp((void *)top.saveStartTime, (void *)UserStartTime, 4*sizeof(int)))
{
memcpy((void *)UserStartTime, (void *)top.saveStartTime, 4*sizeof(int));
memcpy((void *)UserEndTime, (void *)top.saveEndTime, 4*sizeof(int));
ReadData();
}
zoom_stack.pop();
DrawMainWindow();
} /* END UNZOOM */
/* END ZOOM.C */