BusFigure.cc

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/*
    Copyright (c) 2002-2009 Tampere University.
 
    This file is part of TTA-Based Codesign Environment (TCE).
 
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/**
 * @file BusFigure.cc
 *
 * Definition of BusFigure class.
 *
 * @author Ari Metsähalme 2003 (ari.metsahalme-no.spam-tut.fi)
 * @note rating: yellow
 * @note reviewed Jul 27 2004 by ml, pj, am
 */
 
#include <vector>
 
#include "BusFigure.hh"
#include "SegmentFigure.hh"
#include "MachineCanvasLayoutConstraints.hh"
#include "WxConversion.hh"
 
using std::vector;
 
const wxColour BusFigure::DEFAULT_COLOUR = wxColour(150, 150, 150);
 
/**
 * The Constructor.
 */
BusFigure::BusFigure(unsigned int slot): Figure(), slot_(slot) {
    minSize_ = wxSize(
    MachineCanvasLayoutConstraints::BUS_MIN_WIDTH,
    MachineCanvasLayoutConstraints::BUS_MIN_HEIGHT);
    size_ = minSize_;
}
 
/**
 * The Destructor.
 */
BusFigure::~BusFigure() {}
 
/**
 * Returns the virtual bounds of a bus, which are a bit higher than
 * the visible bounds to make selection easier.
 *
 * @return The virtual bounds of a bus.
 */
wxRect
BusFigure::virtualBounds() const {
    if (childCount() <= 1) {
    wxRect virtualLocation = wxRect(
        wxPoint(location_.x, location_.y - size_.GetHeight()),
        wxSize(size_.GetWidth(), size_.GetHeight() * 3));
    return virtualLocation;
    } else {
    return wxRect(location_, size_);
    }
}
 
/** 
 * Lays ouf the segments in a column, spaced evenly.
 *
 * @param dc Device context.
 */
void
BusFigure::layoutChildren(wxDC* dc) {
 
    int segY = location_.y;
    int segX = location_.x;
 
    for(unsigned int i = 0; i < children_.size(); i++) {
        children_[i]->setLocation(wxPoint(segX, segY));
    children_[i]->setWidth(size_.GetWidth());
        children_[i]->layout(dc);
        segY += children_[i]->bounds().GetHeight() +
        MachineCanvasLayoutConstraints::SEGMENT_SPACE;
    }
}
 
/**
 * Calculates and sets bus size according to the size of segments.
 */
void
BusFigure::layoutSelf(wxDC*) {
 
    if (children_.size() > 0) {
    int segsHeight = 0;
 
    vector<Figure*>::const_iterator i = children_.begin();
    for (; i != children_.end(); i++) {
        segsHeight += (*i)->bounds().GetHeight();
    }
    
    dynamic_cast<SegmentFigure*>(children_.back())->setLast(true);
    
    segsHeight += (children_.size() - 1)
        * MachineCanvasLayoutConstraints::SEGMENT_SPACE;
    
    size_.SetHeight(segsHeight);
    }
}
 
/**
 * Draws the Figure of the bus on the given device context if it has
 * no segments, otherwise only the segments are drawn.
 *
 * @param dc The device context.
 */
void
BusFigure::drawSelf(wxDC* dc) {
 
    if (children_.empty()) {
    wxPen pen = wxPen(DEFAULT_COLOUR, 1, wxSOLID);
    wxBrush brush = wxBrush(DEFAULT_COLOUR, wxSOLID);
    dc->SetPen(pen);
    dc->SetBrush(brush);
    
    dc->DrawRectangle(location_.x, location_.y,
              size_.GetWidth(), size_.GetHeight());
    }
 
    // Draw slot label.
    int slotLabelWidth;
    int slotLabelHeight;
    wxString slotLabel = WxConversion::toWxString(slot_);
    dc->GetTextExtent(slotLabel, &slotLabelWidth, &slotLabelHeight);
 
    int slotLabelX = location_.x - slotLabelWidth - 10;
    int slotLabelY =
        ((size_.GetHeight() / 2) + location_.y) - (slotLabelHeight / 2);
 
    dc->SetBackgroundMode(wxTRANSPARENT);
    dc->SetTextForeground(*wxBLACK);
    dc->DrawText(slotLabel, slotLabelX, slotLabelY);
}