/**
* Zooms to page extends.
*/
void RS_GraphicView::zoomPage() {
RS_DEBUG->print("RS_GraphicView::zoomPage");
if (!container) {
return;
}
RS_Graphic* graphic = container->getGraphic();
if (!graphic) {
return;
}
RS_Vector s = graphic->getPaperSize()/graphic->getPaperScale();
double fx, fy;
if (s.x>RS_TOLERANCE) {
fx = (getWidth()-borderLeft-borderRight) / s.x;
} else {
fx = 1.0;
}
if (s.y>RS_TOLERANCE) {
fy = (getHeight()-borderTop-borderBottom) / s.y;
} else {
fy = 1.0;
}
RS_DEBUG->print("f: %f/%f", fx, fy);
fx = fy = std::min(fx, fy);
RS_DEBUG->print("f: %f/%f", fx, fy);
if (fx<RS_TOLERANCE) {
fx=fy=1.0;
}
setFactorX(fx);
setFactorY(fy);
RS_DEBUG->print("f: %f/%f", fx, fy);
centerOffsetX();
centerOffsetY();
adjustOffsetControls();
adjustZoomControls();
// updateGrid();
redraw();
}
/**
* Slot for vertical scroll events.
*/
void QG_GraphicView::slotVScrolled(int value) {
// Scrollbar behaviour tends to change with every Qt version..
// so let's keep old code in here for now
//static int running = false;
//if (!running) {
//running = true;
////RS_DEBUG->print("value y: %d\n", value);
if (vScrollBar->maximum()==vScrollBar->minimum()) {
centerOffsetY();
} else {
setOffsetY(value);
}
//if (isUpdateEnabled()) {
// updateGrid();
redraw();
}
/**
* Slot for vertical scroll events.
*/
void QG_GraphicView::slotVScrolled(int value) {
// Scrollbar behaviour tends to change with every Qt version..
// so let's keep old code in here for now
//static int running = false;
//if (!running) {
//running = true;
// DEBUG_HEADER();
RS_DEBUG->print(/*RS_Debug::D_WARNING,*/ "%s %s(): set vertical offset from %d to %d\n", __FILE__, __FUNCTION__, getOffsetY(), value);
if (vScrollBar->maximum()==vScrollBar->minimum()) {
centerOffsetY();
} else {
setOffsetY(value);
}
//if (isUpdateEnabled()) {
// 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) {
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("adjustZoomControls");
adjustZoomControls();
// RS_DEBUG->print("centerOffsetX");
centerOffsetX();
// RS_DEBUG->print("centerOffsetY");
centerOffsetY();
// RS_DEBUG->print("adjustOffsetControls");
adjustOffsetControls();
// RS_DEBUG->print("updateGrid");
// updateGrid();
redraw();
}
RS_DEBUG->print("RS_GraphicView::zoomAuto OK");
}
