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// dataview.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/border.h>
#include <InterViews/box.h>
#include <InterViews/canvas.h>
#include <InterViews/cursor.h>
#include <InterViews/event.h>
#include <InterViews/glue.h>
#include <InterViews/message.h>
#include <InterViews/perspective.h>
#include "application.h"
#include "block.h"
#include "controller.h"
#include "data.h"
#include "dataview.h"
#include "graph.h"
#include "range.h"
#include "scale.h"
#include "scroller.h"
#include "statuspanel.h"
#include "viewchanger.h"
#include <X11/keysym.h>
// if these are not defined, this program cannot be run correctly on R6 displays
// I assume that if one is not defined, then none are
#ifndef XK_KP_Left
#define XK_KP_Left 0xFF96
#define XK_KP_Right 0xFF98
#define XK_KP_Up 0xFF97
#define XK_KP_Down 0xFF99
#endif
ViewInfo::ViewInfo()
: rangeUnits(FrameUnit), frameRange(-1, -1), channelRange(-1, -1) {
}
ViewInfo::ViewInfo(RangeUnit units)
: rangeUnits(units), frameRange(-1, -1), channelRange(-1, -1) {
}
ViewInfo::ViewInfo(RangeUnit units, const Range& frange, const Range& chrange)
: rangeUnits(units), frameRange(frange), channelRange(chrange) {
}
//********
DataView::DataView(Controller *c, ViewInfo& info)
: dataptr(c->model()), controller(c),
cursorLoc(0), graphsShown(0), maxGraphs(0), perspectiveSet(false) {
Init(info);
}
void
DataView::Init(ViewInfo &info) {
perspective = new Perspective;
hscale = new HScale(
dataptr->frameRangeLabel(info.rangeUnits),
dataptr->frameRange(info.rangeUnits),
dataptr->frameRangeDisplay(info.rangeUnits),
Scale::IsAbove
);
setHorizRangeUnits(info.rangeUnits);
graphs = nil;
expandGraphArray();
dataptr->Attach(this); // this is view of Data
interior = new VBox(
hscale,
graphBox = new VBox, // box for scales and graphs
new HBorder,
new HBox(
new ViewScaler(this),
new VBorder,
makeEditStatusPanel()
),
new HBorder,
viewScroller = new HorizontalViewScroller(this)
);
Insert(interior);
// initialize internal copy of perspective
shown = new Perspective;
}
Interactor *
DataView::makeEditStatusPanel() {
StatusPanel* start = nil;
StatusPanel* end = nil;
StatusPanel* duration = nil;
VBox* panel = new VBox(
new VGlue(3, 0, vfil),
new HBox(
start = new StatusPanel("Edit Start: ",
" "),
new HGlue(10, 0, hfil),
end = new StatusPanel("Edit End: ",
" ")
),
new VGlue(0, 0),
new HBox(
duration = new StatusPanel("Edit Dur: ",
" "),
new HGlue(20, 0, hfil)
),
new VGlue(3, 0, vfil)
);
// this delegate is passed to the controller
editDelegate = new EditStatusDelegate(this, start, end, duration);
return panel;
}
DataView::~DataView() {
// all graphs and scales are destroyed by the MonoScene subclass
delete [] graphs;
dataptr->Detach(this); // detach this view from Data
Resource::unref(shown);
Resource::unref(perspective);
}
void
DataView::Adjust(Perspective &p) {
BUG("DataView::Adjust()");
if(p != *perspective) {
Application::busy(true);
*perspective = constrainView(p);
struct DoAdjuster : public Block {
Perspective *newView;
DoAdjuster(Perspective *p) : newView(p) {}
redefined void doIt( Interactor *i ) {
i->Adjust(*newView);
}
} adjuster(perspective);
doForGraphs(adjuster);
p = *perspective;
perspective->Update(); // updates scales and sliders
Application::busy(false);
}
}
// all Events handled by the DataView are passed to each of the Graph objects
// to see if it was generated by it. If the shift key is down, the event is
// only handed to the Graph that generated it. If not, the event is passed to
// all the Graphs. This allows the Graphs to react in sync to events only
// generated in one.
void
DataView::Handle(Event& e) {
graphEvent(e.shift ? e.target : nil, e);
}
void
DataView::graphEvent(Interactor *target, Event &e) {
if(e.shift_is_down()) { // if selecting single channel
switch(e.eventType) {
case DownEvent:
unselectOthers(target);
cursorLoc = e.x;
break;
case UpEvent:
if(e.leftmouse || e.middlemouse)
cursorLoc = e.x;
break;
case MotionEvent:
if(e.leftmouse) // if tracking insert point
cursorLoc = e.x;
break;
case EnterEvent: // if tracking insert or region between graphs
if(e.leftmouse || e.middlemouse) {
unselectOthers(target);
((Graph *) e.target)->setInsertCoord(cursorLoc);
}
break;
default:
break;
}
}
struct EventSender : public TargetBlock {
Event &event;
EventSender(Interactor *target, Event &e)
: TargetBlock(target), event(e) {}
redefined void doThis( Interactor *i ) {
Graph *g = (Graph *) i;
g->handleEvent(event);
}
} sender(target, e);
doForGraphs( sender );
}
void
DataView::Reconfig() {
BUG("DataView::Reconfig()");
*shown = *perspective;
hscale->setViewPerspective(perspective); // ??? OK HERE ???
viewScroller->Update();
// set each graph's plot edges to match horiz scale's borders
struct Margins : public Block {
int left, right;
Margins(int l, int r) : left(l), right(r) {}
redefined void doIt( Interactor *i ) {
BorderedArea *b = (BorderedArea *) i;
b->setHorizMargins(left, right);
}
} margins(hscale->topMargin(), hscale->bottomMargin());
doForGraphs( margins );
MonoScene::Reconfig();
}
void
DataView::Resize() {
hscale->setSpacers(horizScaleLeftSpacer(), horizScaleRightSpacer());
MonoScene::Resize(); // this resizes all interior Interactors
}
void
DataView::Update() {
BUG("DataView::Update()");
Application::busy(true);
checkPerspective();
updateGraphs();
perspective->Update();
Application::busy(false);
}
boolean
DataView::keyCommand(unsigned MXINT32 sym) {
boolean interested = true;
switch (sym) {
// map arrow keys from keypad and non-keypad to same methods
case XK_Left:
case XK_KP_Left:
horizontalZoom();
break;
case XK_Up:
case XK_KP_Up:
verticalUnZoom();
break;
case XK_Right:
case XK_KP_Right:
horizontalUnZoom();
break;
case XK_Down:
case XK_KP_Down:
verticalZoom();
break;
case XK_f:
setVisibleFrameRange();
break;
case XK_V:
resetVerticalRange();
break;
case XK_equal:
setChannelRange();
break;
case XK_greater:
shiftChannelViewUp();
break;
case XK_less:
shiftChannelViewDown();
break;
case XK_j:
setInsertPoint();
break;
case XK_J:
setEditRegion();
break;
case XK_percent:
case XK_asciicircum:
toggleGraphMode();
break;
case XK_KP_Add:
showVerticalScales(true);
break;
case XK_KP_Subtract:
showVerticalScales(false);
break;
default:
interested = false;
break;
}
return interested;
}
boolean
DataView::doForGraphs(Block &block) {
int i = 0;
while(1)
if(block.doAndDone( graphs[i++] ))
return true;
return false;
}
void
DataView::updateGraphs() {
struct Updater : public Block {
redefined void doIt( Interactor *i ) {
i->Update();
}
} updater;
doForGraphs( updater );
}
void
DataView::unselect() {
unselectOthers(nil); // unselects all channels
}
void
DataView::unselectOthers(Interactor *target) {
struct Unselector : public DoExceptBlock {
Unselector(Interactor *notThis) : DoExceptBlock(notThis) {}
redefined void doThis( Interactor *i ) {
Graph *g = (Graph *) i;
g->unSelect();
}
} unselector(target);
doForGraphs( unselector );
}
Perspective &
DataView::constrainView(Perspective& np) {
BUG("DataView::constrainView()");
if(np == *shown) return np;
*shown = np;
constrainHorizontalView(*shown);
constrainVerticalView(*shown);
return *shown;
}
void
DataView::constrainHorizontalView(Perspective& np) {
const int minwidth = 8;
register Perspective* p = perspective;
np.height = p->height;
np.curx = max(np.curx, 0); // always
np.curwidth = max(np.curwidth, minwidth); // always
int nx = np.curx;
int nw = np.curwidth;
if(nw == p->curwidth && np.width == p->width)
np.curx = min(nx, max(0, np.width - nw));
else if(nx + nw >= np.width) { // horizontal scale change
np.curwidth = min(nw, np.width);
np.curx = min(nx, np.width - np.curwidth);
}
np.lx = np.curwidth;
np.sx = np.lx/4; // scroll incr. is 1/4 screen
}
Range
DataView::getDisplayedHorizRange() {
return hscale->getRange();
}
boolean
DataView::horizScaleInFrames() {
return horizRangeUnits() != FrameTimeUnit
&& horizRangeUnits() != ChannelSpecialUnit;
}
void
DataView::setHorizScaleTo(RangeUnit units) {
setHorizRangeUnits(units);
hscale->setNumberDisplay(dataptr->frameRangeDisplay(units));
hscale->setRange(dataptr->frameRange(units));
setHorizScaleLabel(dataptr->frameRangeLabel(units));
hscale->Update();
getEditDelegate()->update(); // update the edit panel display
}
double
DataView::horizontalScalingFactor() {
return getHorizScaleRange().max() / dataptr->length();
}
int
DataView::horizScaleLeftSpacer() {
Canvas *c = topGraph()->vScale()->GetCanvas();
return c != nil ? c->Width() : topGraph()->vScale()->GetShape()->width;
}
void
DataView::setHorizScaleLabel(const char *name) {
hscale->setLabel(name);
}
void
DataView::showVerticalScales(boolean show) {
struct ScaleShow : public Block {
boolean show;
ScaleShow(boolean doshow) : show(doshow) {}
redefined void doIt( Interactor *i ) {
Graph *g = (Graph *) i;
g->vScale()->showScale(show);
}
} scaleshow(show);
doForGraphs( scaleshow );
doChange();
}
void
DataView::doChange() {
if(canvas != nil) {
topGraph()->Parent()->Change(nil);
}
}
void
DataView::addGraph(Graph *graph) {
if(graphsShown == maxGraphs)
expandGraphArray();
if(graphsShown == maxGraphs)
return; // failed to expand!
graphs[graphsShown] = graph; // add to array
Scale *vscale = new VScale(
graph->verticalScaleLabel(),
graph->verticalScaleRange()
);
vscale->setViewPerspective(getVerticalPerspective());
graph->setViewPerspective(getHorizontalPerspective());
graph->attachVScale(vscale); // establish connection
graphBox->Insert(new HBox(vscale, graph));
incrementGraphsVisible();
}
// graph array is expanded by 4 plus an additional zeroed end-of-array member
void
DataView::expandGraphArray() {
int newMax = maxGraphs + 4;
Graph **newGraphs = new Graph *[newMax + 1]; // plus 1 for EOA
if(newGraphs) {
int i;
for(i=0; i < maxGraphs; i++)
newGraphs[i] = graphs[i]; // copy existing graphs if any
for(i = maxGraphs; i <= newMax; i++)
newGraphs[i] = nil;
delete [] graphs;
graphs = newGraphs;
maxGraphs = newMax;
}
}
// remove one graph and its associated scale from frame
// the channel removed is always the highest channel displayed
void
DataView::removeGraph(boolean chng) {
int topGraph = graphsVisible() - 1;
if(topGraph > 0) { // dont remove last graph!
Graph *graph = graphs[topGraph];
Scale *scale = graph->vScale();
graph->removeVScale(scale);
// graph and scale are enclosed in Scene, so remove this too
Scene* interior = graph->Parent();
if(interior != nil) {
graphBox->Remove(interior);
interior->Remove(scale);
interior->Remove(graph);
delete interior;
}
delete scale;
delete graph;
graphs[topGraph] = nil;
decrementGraphsVisible();
if(chng)
doChange();
}
}
void
DataView::horizontalZoom() {
Perspective np = *perspective;
int width = np.curwidth;
np.curx += width/4;
np.curwidth /= 2;
Adjust(np);
}
void
DataView::horizontalUnZoom() {
Perspective np = *perspective;
int width = np.curwidth;
np.curx -= width/2;
np.curwidth *= 2;
Adjust(np);
}
void
DataView::verticalZoom() {
Perspective np = *perspective;
np.cury = 0;
np.curheight = int(np.curheight * 0.5);
Adjust(np);
}
void
DataView::verticalUnZoom() {
Perspective np = *perspective;
np.cury = 0;
np.curheight *= 2;
Adjust(np);
}
void
DataView::resetVerticalRange() {
Perspective np = *perspective;
np.cury = 0;
np.curheight = perspective->height;
Adjust(np);
}
void
DataView::setVisibleFrameRange() {
VisibleFrameRange changer(this);
if(changer.configure(controller))
changer.apply();
}
void
DataView::setInsertPoint() {
InsertPoint changer(this);
if(changer.configure(controller))
changer.apply();
}
void
DataView::setEditRegion() {
EditRegion changer(this);
if(changer.configure(controller))
changer.apply();
}
//********
EditStatusDelegate::EditStatusDelegate(DataView *view, StatusPanel* start,
StatusPanel* end, StatusPanel* dur)
: myStart(start), myEnd(end), myDur(dur), myView(view) {
myStart->ref();
myEnd->ref();
myDur->ref();
}
EditStatusDelegate::~EditStatusDelegate() {
Resource::unref(myDur);
Resource::unref(myEnd);
Resource::unref(myStart);
}
// this converts range in frames into range in time when necessary
void
EditStatusDelegate::update(const Range& current) {
editRange = current;
if(!myView->horizScaleInFrames()) { // convert to time range
Range values(editRange.min(), editRange.max() + 1);
values *= myView->horizontalScalingFactor();
myStart->updateValue(values.min());
myEnd->updateValue(values.max());
myDur->updateValue(values.spread());
}
else {
myStart->updateValue(current.intMin());
myEnd->updateValue(current.intMax());
myDur->updateValue(current.size());
}
}
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