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// framegraph.C
/******************************************************************************
*
* MiXViews - an X window system based sound & data editor/processor
*
* Copyright (c) 1993, 1994 Regents of the University of California
*
* Author: Douglas Scott
* Date: December 13, 1994
*
* Permission to use, copy and modify this software and its documentation
* for research and/or educational purposes and without fee is hereby granted,
* provided that the above copyright notice appear in all copies and that
* both that copyright notice and this permission notice appear in
* supporting documentation. The author reserves the right to distribute this
* software and its documentation. The University of California and the author
* make no representations about the suitability of this software for any
* purpose, and in no event shall University of California be liable for any
* damage, loss of data, or profits resulting from its use.
* It is provided "as is" without express or implied warranty.
*
******************************************************************************/
#ifdef __GNUG__
#pragma implementation
#endif
#include "localdefs.h"
#include <InterViews/brush.h>
#include <InterViews/cursor.h>
#include <InterViews/event.h>
#include <InterViews/rubline.h>
#ifdef index
#define was_index index
#undef index
#define mxv_index_undefined
#endif
#include <InterViews/font.h>
#ifdef mxv_index_undefined
#undef mxv_index_undefined
#define index was_index
#endif
#include <InterViews/painter.h>
#include <InterViews/perspective.h>
#include <InterViews/sensor.h>
#include <InterViews/shape.h>
#include "framegraph.h"
#include "data.h"
#include "graphplot.h"
#include "scale.h"
#include "selector.h"
FrameGraph::FrameGraph(Controller *c, Data *data, const Range& vertRange)
: Graph(c, data, vertRange), graphplots(nil), vScaleUnits(Amplitude) {
Init();
}
FrameGraph::FrameGraph(Controller *c, Data *data)
: Graph(c, data, data->limits()), graphplots(nil),
vScaleUnits(Amplitude) {
Init();
}
FrameGraph::~FrameGraph() {
for(int plot=0; plot < maxPlots; plot++)
Resource::unref(graphplots[plot]);
delete [] graphplots;
delete [] frameNumbers;
Resource::unref(dashBrush);
}
void
FrameGraph::Init() {
BUG("FrameGraph::Init()");
SetClassName("FrameGraph");
oldFramesVisible = 0;
frameNumbers = nil;
dashBrush = nil;
maxPlots = 0;
vertGrain = 1.0;
hshift = 50; // for now, until variable
vshift = 200; // for now, until variable
}
void
FrameGraph::Reconfig() {
BUG("FrameGraph::Reconfig()");
static int pattern[] = {2, 2};
if(!isConfigured()) {
const char *a = GetAttribute("VerticalPlotOffset");
if (a != nil) vshift = atoi(a);
a = GetAttribute("HorizontalPlotOffset");
if (a != nil) hshift = atoi(a);
a = GetAttribute("VerticalScaleUnits");
if (a != nil && !strcmp(a, "Decibels"))
setVerticalScaleUnits(Decibels);
SetCanvasType(CanvasSaveContents); // to avoid redrawing
dashBrush = new Brush(pattern, 2, 0);
dashBrush->ref(); // to keep it around
}
Graph::Reconfig(); // default or attribute-set size done here
}
inline double
FrameGraph::currentVGrain() {
return vertGrain;
}
inline int
FrameGraph::vertOriginLocation() {
return Graph::vertOriginLocation() + vertShift();
}
inline const char *
FrameGraph::verticalScaleLabel() {
return scaleInAmplitude() ? "Magnitude" : "Decibels";
}
inline int
FrameGraph::framesVisible() {
return min(perspective->curheight, maxPlots);
}
inline int
FrameGraph::channelsVisible() {
return perspective->curwidth;
}
inline int
FrameGraph::frameSize() {
return graphData->frameLength();
}
void
FrameGraph::setShape() { // called from Graph::Reconfig()
shape->width += horizShift();
shape->height += vertShift();
shape->Rigid(max(0, shape->width - (horizShift() * 2)), hfil,
max(0, shape->height/2 - vertShift()), vfil);
}
void
FrameGraph::Redraw(Coord left, Coord bottom, Coord right, Coord top) {
BUG("FrameGraph::Redraw()");
output->Clip(canvas, left, bottom, right, top);
output->ClearRect(canvas, left, bottom, right, top);
int totalHorizOffset = horizShift();
int hOrigin = horizOriginLocation();
int totalVertOffset = vertShift();
int vOrigin = vertOriginLocation();
int frameEnd = framesVisible();
const Brush* oldBrush = output->GetBrush();
oldBrush->ref(); // to keep it around
output->SetBrush(dashBrush);
// draw dotted z origin
output->Line(canvas, hOrigin, ymax - topBorder(),
hOrigin, ymax - topBorder() - currentHeight());
output->SetBrush(oldBrush);
char frameLabel[16];
const char *label = nil;
const Font* font = output->GetFont();
int voffset = -(font->Height() / 2);
for(int frame=0; frame < frameEnd; frame++) { // draw plots and labels
double fraction = double(frame)/frameEnd;
int horizLoc = hOrigin + int(totalHorizOffset * fraction);
int vertLoc = vOrigin - int(totalVertOffset * fraction);
output->SetOrigin(horizLoc, vertLoc);
// check each plot to see if it needs to be redrawn
if(graphplots[frame]->contains(left - horizLoc, bottom - vertLoc,
right - horizLoc, top - vertLoc)) {
if((label = getLabel(frameLabel, frame)) != NULL) {
output->Text(canvas, label,
(-2 - font->Width(label)), voffset);
}
graphplots[frame]->draw(canvas, output);
output->SetBrush(dashBrush);
output->Line(canvas, 0, 0, currentWidth(), 0); // base line
output->SetBrush(oldBrush);
}
}
output->SetOrigin(0, 0);
// draw dotted y origin
output->SetBrush(dashBrush);
output->Line(canvas, hOrigin, vOrigin,
hOrigin + totalHorizOffset, vOrigin - totalVertOffset);
output->SetBrush(oldBrush);
output->NoClip();
Resource::unref(oldBrush);
}
// if more than two areas need to be redrawn, it is more efficient to just
// redraw the entire window. This will be further optimized in the future.
void FrameGraph::RedrawList(
int n, IntCoord left[], IntCoord bottom[], IntCoord right[], IntCoord top[]
) {
if(n > 2)
Draw();
else
Graph::RedrawList(n, left, bottom, right, top);
}
// this is called by Graph::Resize() prior to loading plots
void
FrameGraph::doResize() {
BUG("FrameGraph::doResize()");
int newMax = vertShift()/2; // plots can be spaced every 2nd vertical pixel
int oldMax = maxPlots;
if(newMax > oldMax) {
GraphPlot **newplots = new GraphPlot *[newMax]; // create slots
for(int plot = 0; plot < newMax; plot++) {
if(plot < oldMax && graphplots[plot] != nil)
newplots[plot] = graphplots[plot]; // copy plots to new slots
else
newplots[plot] = nil; // and zero new slots
}
delete [] graphplots; // delete old slot array
graphplots = newplots; // and copy new array to old
maxPlots = newMax;
}
}
void
FrameGraph::Update() {
BUG("FrameGraph::Update()");
Graph::Update();
}
boolean
FrameGraph::isViewChanged(Perspective &np) {
register Perspective *p = perspective;
return (
np.curwidth != p->curwidth
|| np.width != p->width
|| np.curx != p->curx
|| np.curheight != p->curheight
|| np.height != p->height
|| np.cury != p->cury
);
}
// compiler sez "sorry, not implemented: aggregate value in COND_EXPR" -- UGH!
// so cant use () ? : here.
void
FrameGraph::setReferenceRange() {
if(scaleInAmplitude())
Graph::setReferenceRange(graphData->limits());
else
Graph::setReferenceRange(Range(0.0, 90.31));
}
void
FrameGraph::setVerticalGrain(double newgrain) {
BUG("FrameGraph::setVerticalGrain()");
if(newgrain != vertGrain) {
vertGrain = newgrain;
doAdjust();
Draw();
if(vscale) {
vscale->setRange(verticalScaleRange());
vscale->Update();
}
}
}
void
FrameGraph::setVerticalScaleUnits(VerticalScaleUnits units) {
if(units != vScaleUnits) {
vScaleUnits = units;
Update();
if(vscale) {
vscale->setLabel(verticalScaleLabel());
vscale->Update();
}
}
}
void
FrameGraph::createPlot() {
BUG("FrameGraph::createPlot()");
for(int frame = 0; frame < maxPlots; frame++) {
Resource::unref(graphplots[frame]);
graphplots[frame] = new SolidPlot(this, currentWidth());
graphplots[frame]->ref();
}
delete [] frameNumbers;
frameNumbers = new int[maxPlots];
oldFramesVisible = maxPlots;
}
void
FrameGraph::loadPlot() {
BUG("FrameGraph::loadPlot()");
register Perspective *p = GetPerspective();
int framesize = min(frameSize(), channelsVisible());
int frameoffset = p->curx;
double frameIncrement = currentFrameGrain();
int startFrame = p->cury;
for(int plot = 0, frame = 0; plot < framesVisible(); plot++) {
GraphPlot* graphplot = graphplots[plot];
graphplot->setPlotLength(min(framesize, currentWidth()));
frame = startFrame + int(plot * frameIncrement);
frameNumbers[plot] = frame; // for later display
Data* frameData = graphData->cloneFrame(
frame, Range(frameoffset, frameoffset + framesize - 1)
);
frameData->ref();
graphplot->load(frameData,
scaleInAmplitude() ? PeakToPeakAmplitude : ::Decibels);
Resource::unref(frameData);
}
}
void
FrameGraph::doPlot() {
for(int frame=0; frame < framesVisible(); frame++)
graphplots[frame]->plot();
}
// currentWidth redefined to represent the width of each plot rather than
// the width of the canvas
int
FrameGraph::currentWidth() {
return Graph::currentWidth() - horizShift();
}
// currentHeight redefined to represent the height of rearmost plot
int
FrameGraph::currentHeight() {
return Graph::currentHeight() - vertShift();
}
void
FrameGraph::grab(Event &e) {
if(!e.control_is_down())
return;
SetCursor(crosshairs);
static int pattern[] = {2, 2};
const Brush* oldBrush = output->GetBrush();
oldBrush->ref(); // to keep it around
output->SetBrush(new Brush(pattern, 2, 2));
Listen(allEvents);
int horigin = horizOriginLocation();
int vorigin = vertOriginLocation();
RubberLine line(output, canvas, horigin, vorigin,
horigin + horizShift(), vorigin + vertShift());
line.Track(e.x, e.y);
int xloc = e.x;
int yloc = e.y;
do {
switch (e.eventType) {
case MotionEvent:
e.target->GetRelative(e.x, e.y, this);
constrainOffsets(e.x, e.y);
line.Track(e.x, e.y);
xloc = e.x;
yloc = e.y;
break;
default:
break;
}
Read(e);
} while (e.eventType != UpEvent);
Listen(input);
output->SetBrush(oldBrush);
Resource::unref(oldBrush);
SetCursor(defaultCursor);
setAxisOffsets(xloc - horigin, vorigin - yloc);
}
void
FrameGraph::constrainOffsets(int& x, int& y) {
x = max(horizOriginLocation(), min(xmax / 2, x));
y = min(vertOriginLocation(), y);
}
void
FrameGraph::setAxisOffsets(int horiz, int vert) {
setHorizShift(horiz);
setVertShift(vert);
doResize();
createPlot();
Update();
Parent()->Change(this);
}
void
FrameGraph::setVertShift(int vsh) {
static const int minVertOffset = 2;
vshift = min(Graph::currentHeight() - 50,
max(vsh, minVertOffset * framesVisible()));
}
void
FrameGraph::setHorizShift(int hsh) {
hshift = hsh;
}
double
FrameGraph::currentFrameGrain() {
return max(1.0, double(perspective->curheight)/framesVisible());
}
const char *
FrameGraph::getLabel(char *label, int frame) {
int frameNumber = frameNumbers[frame];
int visible = framesVisible();
double grain = currentFrameGrain();
int thresh = int(grain);
boolean retval;
int increment = 1;
if(grain == 1.0 && visible < 10)
retval = true;
else if(grain <= 1.9 && visible < 50)
retval = (frameNumber % (increment=5) == 0);
else if(grain < 3.0 && visible < 100)
retval = (frameNumber % (increment=10) < thresh);
else
retval = (frameNumber % (increment=50) < thresh);
if(retval) {
toString(label, int(roundDownToNearest(frameNumber, increment)));
return label;
}
return NULL;
}
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