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New method zoomedPixel to compute pixel amount also in HiDpi

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The function does not use for now any information from the BufferView
(only lyxrc), but this should eventually change if we want to honor
multi monitor setups properly.
This commit is contained in:
Jean-Marc Lasgouttes 2018-01-25 22:06:03 +01:00
parent 7a93aa47cc
commit 1a969fa4a6
4 changed files with 26 additions and 5 deletions
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20
src/BufferView.cpp
View File

@ -81,6 +81,7 @@
#include "support/gettext.h"
#include "support/lassert.h"
#include "support/lstrings.h"
#include "support/lyxlib.h"
#include "support/Package.h"
#include "support/types.h"
@ -361,8 +362,8 @@ BufferView::~BufferView()
int BufferView::rightMargin() const
{
// The value used to be hardcoded to 10, which is 0.1in at 100dpi
int const default_margin = Length(0.1, Length::IN).inPixels(0);
// The value used to be hardcoded to 10
int const default_margin = zoomedPixels(10);
// The additional test for the case the outliner is opened.
if (!full_screen_ || !lyxrc.full_screen_limit
|| width_ < lyxrc.full_screen_width + 2 * default_margin)
@ -385,6 +386,21 @@ int BufferView::inPixels(Length const & len) const
}
int BufferView::zoomedPixels(int pix) const
{
// FIXME: the dpi setting should really depend on the BufferView
// (think different monitors).
// Zoom factor specified by user in percent
double const zoom = lyxrc.currentZoom / 100.0; // [percent]
// DPI setting for monitor: pixels/inch
double const dpi = lyxrc.dpi; // screen resolution [pixels/inch]
return support::iround(pix * zoom * dpi);
}
bool BufferView::isTopScreen() const
{
return 0 == d->scrollbarParameters_.min;

5
src/BufferView.h
View File

@ -114,6 +114,11 @@ public:
*/
int inPixels(Length const & len) const;
/** Return the number of pixels equivalent to \c pix pixels at
* 100dpi and 100% zoom.
*/
int zoomedPixels(int pix) const;
/// \return true if the BufferView is at the top of the document.
bool isTopScreen() const;

2
src/TextMetrics.cpp
View File

@ -501,7 +501,7 @@ bool TextMetrics::redoParagraph(pit_type const pit)
// Top and bottom margin of the document (only at top-level)
if (text_->isMainText()) {
// original value was 20px, which is 0.2in at 100dpi
int const margin = Length(0.2, Length::IN).inPixels(0);
int const margin = bv_->zoomedPixels(20);
if (pit == 0) {
pm.rows().front().dimension().asc += margin;
/* coverity thinks that we should update pm.dim().asc

4
src/mathed/InsetMathHull.cpp
View File

@ -565,7 +565,7 @@ void InsetMathHull::metrics(MetricsInfo & mi, Dimension & dim) const
if (l)
// Value was hardcoded to 30 pixels
dim.wid += mi.base.inPixels(Length(0.3, Length::IN)) + l;
dim.wid += mi.base.bv->zoomedPixels(30) + l;
}
// reserve some space for marker.
@ -674,7 +674,7 @@ void InsetMathHull::draw(PainterInfo & pi, int x, int y) const
if (l)
// Value was hardcoded to 30 pixels
xmath += pi.base.inPixels(Length(0.3, Length::IN)) + l;
xmath += pi.base.bv->zoomedPixels(30) + l;
}
InsetMathGrid::draw(pi, xmath + 1, y);