/usr/include/qgis/qgscomposerruler.h is in libqgis-dev 2.4.0-1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | #ifndef QGSCOMPOSERRULER_H
#define QGSCOMPOSERRULER_H
#include "qgscomposeritem.h"
#include <QWidget>
class QgsComposition;
class QGraphicsLineItem;
/**A class to show paper scale and the current cursor position*/
class GUI_EXPORT QgsComposerRuler: public QWidget
{
Q_OBJECT
public:
enum Direction
{
Horizontal = 0,
Vertical
};
QgsComposerRuler( QgsComposerRuler::Direction d );
~QgsComposerRuler();
QSize minimumSizeHint() const;
void setSceneTransform( const QTransform& transform );
void updateMarker( const QPointF& pos ) { mMarkerPos = pos; repaint(); }
void setComposition( QgsComposition* c ) { mComposition = c; }
QgsComposition* composition() { return mComposition; }
int rulerSize() { return mRulerMinSize; }
protected:
void paintEvent( QPaintEvent* event );
void mouseMoveEvent( QMouseEvent* event );
void mouseReleaseEvent( QMouseEvent* event );
void mousePressEvent( QMouseEvent* event );
private:
static const int validScaleMultiples[];
static const int validScaleMagnitudes[];
Direction mDirection;
QTransform mTransform;
QPointF mMarkerPos;
QgsComposition* mComposition; //reference to composition for paper size, nPages
QGraphicsLineItem* mLineSnapItem;
//items snapped to the current snap line
QList< QPair< QgsComposerItem*, QgsComposerItem::ItemPositionMode > > mSnappedItems;
QFont * mRulerFont;
QFontMetrics * mRulerFontMetrics;
double mScaleMinPixelsWidth;
int mRulerMinSize;
int mMinPixelsPerDivision;
int mPixelsBetweenLineAndText;
int mTextBaseline;
int mMinSpacingVerticalLabels;
void setSnapLinePosition( const QPointF& pos );
//calculate optimum labeled units for ruler so that labels are a good distance apart
int optimumScale( double minPixelDiff, int &magnitude, int &multiple );
//calculate number of small divisions for each ruler unit, ensuring that they
//are sufficiently spaced
int optimumNumberDivisions( double rulerScale, int scaleMultiple );
//draws vertical text on a painter
void drawRotatedText( QPainter *painter, QPointF pos, const QString &text );
/* Draws small ruler divisions
* Starting at startPos in mm, for numDivisions divisions, with major division spacing of rulerScale (in mm)
* Stop drawing if position exceeds maxPos
*/
void drawSmallDivisions( QPainter *painter, double startPos, int numDivisions, double rulerScale, double maxPos = 0 );
//draw current marker pos on ruler
void drawMarkerPos( QPainter *painter );
signals:
/**Is emitted when mouse cursor coordinates change*/
void cursorPosChanged( QPointF );
};
#endif // QGSCOMPOSERRULER_H
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