141 lines
2.9 KiB
C++
141 lines
2.9 KiB
C++
#ifndef TOOLRULER_H
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#define TOOLRULER_H
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#include "Tool.h"
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class ToolRuler : public Tool {
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private:
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int mouseX;
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int mouseY;
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const bool fullSize = true;
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const int rs = 40; // ruler size
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const int tsMajor = 20; // major-tick size
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const int tsMinor = 5; // minor-tick size
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public:
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virtual void mouseMoveEvent(MapView2D* m, QMouseEvent* e) override {
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(void) m;
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this->mouseX = e->x();
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this->mouseY = e->y();
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}
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virtual void paintBefore(MapView2D* m, Painter& p) override {
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(void) m;
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// mouse-indicator within the image?
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if (fullSize) {
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const int w = p.width();
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const int h = p.height();
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p.setPenBrush(Qt::lightGray, Qt::NoBrush);
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p.p->drawLine(rs, mouseY, w, mouseY);
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p.p->drawLine(mouseX, rs, mouseX, h);
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}
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}
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virtual void paintAfter(MapView2D* m, Painter& p) override {
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(void) m;
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static const QColor c1(240,240,240);
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static const QColor c2(200,200,200);
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const int w = p.width();
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const int h = p.height();
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// ruler step-size depending on the current zoom level
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const float step = p.getScaler().getLODstep();
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const float sStep = step / 10.0f;
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// the visible map-rect
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const Rect r = p.getScaler().getMapVisible(w, h, step);
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QRect rx(rs,0,w-1-rs,rs);
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QRect ry(0,rs,rs,h-1-rs);
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// background
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{
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// samller font
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QFont f = p.p->font(); f.setPointSize(8);
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p.p->setFont(f);
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// outline
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p.setPen(Qt::darkGray);
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// x-axis
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QLinearGradient gx(0,0,0,rs); gx.setColorAt(0, c1); gx.setColorAt(1, c2); p.setBrush(gx);
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p.p->drawRect(rx);
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// y-axis
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QLinearGradient gy(0,0,rs,0); gy.setColorAt(0, c2); gy.setColorAt(1, c1); p.setBrush(gy);
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p.p->drawRect(ry);
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}
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// mouse-indicator
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p.setPenBrush(Qt::darkGray, Qt::NoBrush);
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p.p->drawLine(0, mouseY, rs, mouseY);
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p.p->drawLine(mouseX, 0, mouseX, rs);
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p.setPenBrush(Qt::black, Qt::NoBrush);
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char buf[128];
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// y-axis
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p.p->setClipRect(ry);
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for (float y = r.y0; y <= r.y1; y += step) {
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// major-lines
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const float yMajor = p.s.yms(y);
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//if (yMajor < 0 || yMajor > h) {continue;} // stop at the end
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p.p->drawLine(0,yMajor, tsMajor,yMajor);
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// minor-lines
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for (float y1 = y+sStep; y1 < y+step; y1 += sStep) {
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const float yMinor = p.s.yms(y1);
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p.p->drawLine(0,yMinor, tsMinor,yMinor);
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}
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// text-label
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std::sprintf(buf, "%.1f", y);
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p.p->drawText(6, yMajor-2, buf);
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}
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// x-axis
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p.p->setClipRect(rx);
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for (float x = r.x0; x <= r.x1; x += step) {
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// major-lines
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const float xMajor = p.s.xms(x);
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//if (xMajor < 0 || xMajor > w) {continue;} // stop at the end
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p.p->drawLine(xMajor,0, xMajor,tsMajor);
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// minor-lines
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for (float x1 = x+sStep; x1 < x+step; x1 += sStep) {
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const float xMinor = p.s.xms(x1);
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p.p->drawLine(xMinor,0, xMinor,tsMinor);
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}
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// text-label
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std::sprintf(buf, "%.1f", x);
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p.p->drawText(xMajor+2, 18, buf);
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}
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p.p->setClipping(false);
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}
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};
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#endif // TOOLRULER_H
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