/**
* Zooms the area given by v1 and v2.
*
* @param keepAspectRatio true: keeps the aspect ratio 1:1
* false: zooms exactly the selected range to the
* current graphic view
*/
void RS_GraphicView::zoomWindow(RS_Vector v1, RS_Vector v2,
bool keepAspectRatio) {
double zoomX=480.0; // Zoom for X-Axis
double zoomY=640.0; // Zoom for Y-Axis (Set smaller one)
int zoomBorder = 0;
// Switch left/right and top/bottom is necessary:
if(v1.x>v2.x) {
std::swap(v1.x,v2.x);
}
if(v1.y>v2.y) {
std::swap(v1.y,v2.y);
}
// Get zoom in X and zoom in Y:
if(v2.x-v1.x>1.0e-6) {
zoomX = getWidth() / (v2.x-v1.x);
}
if(v2.y-v1.y>1.0e-6) {
zoomY = getHeight() / (v2.y-v1.y);
}
// Take smaller zoom:
if (keepAspectRatio) {
if(zoomX<zoomY) {
if(getWidth()!=0) {
zoomX = zoomY = ((double)(getWidth()-2*zoomBorder)) /
(double)getWidth()*zoomX;
}
} else {
if(getHeight()!=0) {
zoomX = zoomY = ((double)(getHeight()-2*zoomBorder)) /
(double)getHeight()*zoomY;
}
}
}
zoomX=fabs(zoomX);
zoomY=fabs(zoomY);
// Borders in pixel after zoom
int pixLeft =(int)(v1.x*zoomX);
int pixTop =(int)(v2.y*zoomY);
int pixRight =(int)(v2.x*zoomX);
int pixBottom=(int)(v1.y*zoomY);
if( pixLeft == INT_MIN || pixLeft== INT_MAX ||
pixRight == INT_MIN || pixRight== INT_MAX ||
pixTop == INT_MIN || pixTop== INT_MAX ||
pixBottom == INT_MIN || pixBottom== INT_MAX ) {
RS_DIALOGFACTORY->commandMessage("Requested zooming factor out of range. Zooming not changed");
return;
}
saveView();
// Set new offset for zero point:
offsetX = - pixLeft + (getWidth() -pixRight +pixLeft)/2;
offsetY = - pixTop + (getHeight() -pixBottom +pixTop)/2;
factor.x = zoomX;
factor.y = zoomY;
adjustOffsetControls();
adjustZoomControls();
// updateGrid();
redraw();
}
/**
* performs autozoom
*
* @param axis include axis in zoom
* @param keepAspectRatio true: keep aspect ratio 1:1
* false: factors in x and y are stretched to the max
*/
void RS_GraphicView::zoomAuto(bool axis, bool keepAspectRatio) {
RS_DEBUG->print("RS_GraphicView::zoomAuto");
if (container!=NULL) {
container->calculateBorders();
double sx, sy;
if (axis) {
sx = std::max(container->getMax().x, 0.0)
- std::min(container->getMin().x, 0.0);
sy = std::max(container->getMax().y, 0.0)
- std::min(container->getMin().y, 0.0);
} else {
sx = container->getSize().x;
sy = container->getSize().y;
}
// std::cout<<" RS_GraphicView::zoomAuto("<<axis<<","<<keepAspectRatio<<")"<<std::endl;
double fx=1., fy=1.;
unsigned short fFlags=0;
if (sx>RS_TOLERANCE) {
fx = (getWidth()-borderLeft-borderRight) / sx;
} else {
fFlags += 1; //invalid x factor
}
if (sy>RS_TOLERANCE) {
fy = (getHeight()-borderTop-borderBottom) / sy;
} else {
fFlags += 2; //invalid y factor
}
// std::cout<<"0: fx= "<<fx<<"\tfy="<<fy<<std::endl;
RS_DEBUG->print("f: %f/%f", fx, fy);
switch(fFlags){
case 1:
fx=fy;
break;
case 2:
fy=fx;
break;
case 3:
return; //do not do anything, invalid factors
default:
if (keepAspectRatio) {
fx = fy = std::min(fx, fy);
}
// break;
}
// std::cout<<"1: fx= "<<fx<<"\tfy="<<fy<<std::endl;
RS_DEBUG->print("f: %f/%f", fx, fy);
//exclude invalid factors
fFlags=0;
if (fx<RS_TOLERANCE||fx>RS_MAXDOUBLE) {
fx=1.0;
fFlags += 1;
}
if (fy<RS_TOLERANCE||fy>RS_MAXDOUBLE) {
fy=1.0;
fFlags += 2;
}
if(fFlags == 3 ) return;
saveView();
// std::cout<<"2: fx= "<<fx<<"\tfy="<<fy<<std::endl;
setFactorX(fx);
setFactorY(fy);
RS_DEBUG->print("f: %f/%f", fx, fy);
// RS_DEBUG->print("adjustOffsetControls");
adjustOffsetControls();
// RS_DEBUG->print("adjustZoomControls");
adjustZoomControls();
// RS_DEBUG->print("centerOffsetX");
centerOffsetX();
// RS_DEBUG->print("centerOffsetY");
centerOffsetY();
// RS_DEBUG->print("updateGrid");
// updateGrid();
redraw();
}
RS_DEBUG->print("RS_GraphicView::zoomAuto OK");
}
void Viewer::on_actionSave_4_triggered() { saveView(3); }
void Viewer::on_actionSave_3_triggered() { saveView(2); }
void Viewer::on_actionSave_2_triggered() { saveView(1); }
void Viewer::on_actionSave_1_triggered() { saveView(0); }
