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https://github.com/UpsilonNumworks/Upsilon.git
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94 lines
2.5 KiB
C++
94 lines
2.5 KiB
C++
#include "function_graph_view.h"
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#include <assert.h>
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#include <cmath>
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#include <float.h>
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using namespace Poincare;
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namespace Shared {
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FunctionGraphView::FunctionGraphView(InteractiveCurveViewRange * graphRange,
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CurveViewCursor * cursor, BannerView * bannerView, View * cursorView) :
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CurveView(graphRange, cursor, bannerView, cursorView),
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m_selectedFunction(nullptr),
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m_verticalCursor(false),
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m_highlightedStart(NAN),
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m_highlightedEnd(NAN),
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m_shouldColorHighlighted(false),
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m_xLabels{},
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m_yLabels{},
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m_context(nullptr)
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{
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}
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void FunctionGraphView::reload() {
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CurveView::reload();
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if (!std::isnan(m_highlightedStart)) {
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float pixelLowerBound = floatToPixel(Axis::Horizontal, m_highlightedStart)-2.0;
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float pixelUpperBound = floatToPixel(Axis::Horizontal, m_highlightedEnd)+4.0;
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/* We exclude the banner frame from the dirty zone to avoid unnecessary
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* redrawing */
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KDRect dirtyZone(KDRect(pixelLowerBound, 0, pixelUpperBound-pixelLowerBound,
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bounds().height()-m_bannerView->bounds().height()));
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markRectAsDirty(dirtyZone);
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}
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}
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void FunctionGraphView::drawRect(KDContext * ctx, KDRect rect) const {
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ctx->fillRect(rect, KDColorWhite);
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drawGrid(ctx, rect);
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drawAxes(ctx, rect, Axis::Horizontal);
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drawAxes(ctx, rect, Axis::Vertical);
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drawLabels(ctx, rect, Axis::Horizontal, true);
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drawLabels(ctx, rect, Axis::Vertical, true);
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}
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void FunctionGraphView::setContext(Context * context) {
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m_context = context;
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}
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Context * FunctionGraphView::context() const {
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return m_context;
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}
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void FunctionGraphView::selectFunction(Function * function) {
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if (m_selectedFunction != function) {
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reload();
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m_selectedFunction = function;
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reload();
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}
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}
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void FunctionGraphView::setVerticalCursor(bool verticalCursor) {
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m_verticalCursor = verticalCursor;
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}
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void FunctionGraphView::setAreaHighlight(float start, float end) {
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if (m_highlightedStart != start || m_highlightedEnd != end) {
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reload();
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m_highlightedStart = start;
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m_highlightedEnd = end;
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reload();
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}
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}
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void FunctionGraphView::setAreaHighlightColor(bool highlightColor) {
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if (m_shouldColorHighlighted != highlightColor) {
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reload();
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m_shouldColorHighlighted = highlightColor;
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reload();
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}
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}
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KDSize FunctionGraphView::cursorSize() {
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if (m_verticalCursor) {
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return KDSize(1, 0);
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}
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return CurveView::cursorSize();
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}
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char * FunctionGraphView::label(Axis axis, int index) const {
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return (axis == Axis::Horizontal ? (char *)m_xLabels[index] : (char *)m_yLabels[index]);
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}
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}
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