Files
Upsilon/apps/sequence/graph/graph_view.cpp
Émilie Feral 1964d61fdc [libaxx] add cmath and use cmath instead of math.h when required
Change-Id: Id839b17d33c69e2e002f370e553ff35246a1bc90
2017-08-16 09:55:29 +02:00

108 lines
3.4 KiB
C++

#include "graph_view.h"
#include <cmath>
using namespace Shared;
namespace Sequence {
GraphView::GraphView(SequenceStore * sequenceStore, InteractiveCurveViewRange * graphRange,
CurveViewCursor * cursor, BannerView * bannerView, View * cursorView) :
FunctionGraphView(graphRange, cursor, bannerView, cursorView),
m_sequenceStore(sequenceStore),
m_verticalCursor(false),
m_highlightedDotStart(-1),
m_highlightedDotEnd(-1),
m_shouldColorHighlighted(false),
m_selectedSequence(nullptr)
{
}
void GraphView::drawRect(KDContext * ctx, KDRect rect) const {
FunctionGraphView::drawRect(ctx, rect);
for (int i = 0; i < m_sequenceStore->numberOfActiveFunctions(); i++) {
Sequence * s = m_sequenceStore->activeFunctionAtIndex(i);
float rectXMin = pixelToFloat(Axis::Horizontal, rect.left() - k_externRectMargin);
rectXMin = rectXMin < 0 ? 0 : rectXMin;
float rectXMax = pixelToFloat(Axis::Horizontal, rect.right() + k_externRectMargin);
/* We draw a dot at every integer if WindowRange/Resolution < 1. Otherwise,
* we draw a dot at every step where step is an integer wider than 1. */
float windowRange = pixelToFloat(Axis::Horizontal, bounds().width()) - pixelToFloat(Axis::Horizontal, 0);
int step = std::ceil(windowRange/resolution());
for (int x = rectXMin; x < rectXMax; x += step) {
float y = evaluateModelWithParameter(s, x);
if (isnan(y)) {
continue;
}
drawDot(ctx, rect, x, y, s->color());
if (x >= m_highlightedDotStart && x <= m_highlightedDotEnd && s == m_selectedSequence) {
KDColor color = m_shouldColorHighlighted ? s->color() : KDColorBlack;
if (y >= 0.0f) {
drawSegment(ctx, rect, Axis::Vertical, x, 0.0f, y, color, 1);
} else {
drawSegment(ctx, rect, Axis::Vertical, x, y, 0.0f, color, 1);
}
}
}
}
}
void GraphView::setVerticalCursor(bool verticalCursor) {
m_verticalCursor = verticalCursor;
}
void GraphView::reload() {
FunctionGraphView::reload();
if (m_highlightedDotStart >= 0) {
float pixelLowerBound = floatToPixel(Axis::Horizontal, m_highlightedDotStart)-1;
float pixelUpperBound = floatToPixel(Axis::Horizontal, m_highlightedDotEnd)+2;
/* We exclude the banner frame from the dirty zone to avoid unnecessary
* redrawing */
KDRect dirtyZone(KDRect(pixelLowerBound, 0, pixelUpperBound-pixelLowerBound,
bounds().height()-m_bannerView->bounds().height()));
markRectAsDirty(dirtyZone);
}
}
void GraphView::selectSequence(Sequence * sequence) {
if (m_selectedSequence != sequence) {
reload();
m_selectedSequence = sequence;
reload();
}
}
void GraphView::setHighlight(int start, int end) {
if (m_highlightedDotStart != start || m_highlightedDotEnd != end) {
reload();
m_highlightedDotStart = start;
m_highlightedDotEnd = end;
reload();
}
}
void GraphView::setHighlightColor(bool highlightColor) {
if (m_shouldColorHighlighted != highlightColor) {
reload();
m_shouldColorHighlighted = highlightColor;
reload();
}
}
float GraphView::samplingRatio() const {
return 5.0f;
}
float GraphView::evaluateModelWithParameter(Model * curve, float abscissa) const {
Sequence * s = (Sequence *)curve;
return s->evaluateAtAbscissa(abscissa, context());
}
KDSize GraphView::cursorSize() {
if (m_verticalCursor) {
return KDSize(1, 0);
}
return CurveView::cursorSize();
}
}