dpi-dependent methods

libs/graphic/graphic.cpp

@@ -126,7 +126,7 @@ Graphic::Graphic(QWidget * parent): QFrame(parent), canvas(0), line_x_min(this),
 	gridx = gridy = 1.;
 	history = 5.;
 	visible_time = -1.;
-	thick = lineThickness();
+	thick = lineThickness(this);
 	pause_phase = 0.;
 	def_rect.setRect(0., 0., 1., 1.);
 	selrect = def_rect;
@@ -320,7 +320,7 @@ void Graphic::canvasPaintEvent() {
 #else
 	font_sz.setWidth(font_sz.width() * 8);
 #endif
-	thick = lineThickness();
+	thick = lineThickness(this);
 	if (buffer != 0) if (buffer->width() != wid || buffer->height() != hei) {delete buffer; buffer = 0;}
 	if (buffer == 0) buffer = new QImage(wid, hei, QImage::Format_RGB32);
 	if (bufferActive) {