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derive ArdourCanvas::Ruler from Rectangle

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This commit is contained in:
Paul Davis 2014-06-12 10:35:16 -04:00
parent 0762708d83
commit 87a6f633a1
2 changed files with 25 additions and 34 deletions
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10
libs/canvas/canvas/ruler.h
View File

@ -24,14 +24,12 @@
#include <pangomm/fontdescription.h>
#include "canvas/item.h"
#include "canvas/fill.h"
#include "canvas/outline.h"
#include "canvas/rectangle.h"
namespace ArdourCanvas
{
class LIBCANVAS_API Ruler : virtual public Item, public Fill, public Outline
class LIBCANVAS_API Ruler : public Rectangle
{
public:
struct Mark {
@ -58,17 +56,15 @@ public:
};
Ruler (Group *, const Metric& m);
Ruler (Group *, const Metric& m, Rect const&);
void set_range (double lower, double upper);
void set_size (Rect const&);
void set_font_description (Pango::FontDescription);
void render (Rect const & area, Cairo::RefPtr<Cairo::Context>) const;
void compute_bounding_box () const;
private:
const Metric& _metric;
Rect _rect;
/* lower and upper and sample positions, which are also canvas coordinates
*/

43
libs/canvas/ruler.cc
View File

@ -33,8 +33,17 @@ using namespace ArdourCanvas;
Ruler::Ruler (Group *p, const Metric& m)
: Item (p)
, Fill (p)
, Outline (p)
, Rectangle (p)
, _metric (m)
, _lower (0)
, _upper (0)
, _need_marks (true)
{
}
Ruler::Ruler (Group *p, const Metric& m, Rect const& r)
: Item (p)
, Rectangle (p, r)
, _metric (m)
, _lower (0)
, _upper (0)
@ -60,27 +69,6 @@ Ruler::set_font_description (Pango::FontDescription fd)
end_visual_change ();
}
void
Ruler::set_size (Rect const & area)
{
if (_rect != area) {
begin_visual_change ();
_rect = area;
_bounding_box_dirty = true;
end_visual_change ();
}
}
void
Ruler::compute_bounding_box () const
{
if (!_rect.empty()) {
_bounding_box = _rect;
}
_bounding_box_dirty = false;
}
void
Ruler::render (Rect const & area, Cairo::RefPtr<Cairo::Context> cr) const
{
@ -89,7 +77,7 @@ Ruler::render (Rect const & area, Cairo::RefPtr<Cairo::Context> cr) const
return;
}
Rect self (item_to_window (_rect));
Rect self (item_to_window (get()));
boost::optional<Rect> i = self.intersection (area);
if (!i) {
@ -118,8 +106,14 @@ Ruler::render (Rect const & area, Cairo::RefPtr<Cairo::Context> cr) const
/* draw line on lower edge as a separator */
if (_outline_width == 1.0) {
/* Cairo single pixel line correction */
cr->move_to (self.x0, self.y1-0.5);
cr->line_to (self.x1, self.y1-0.5);
} else {
cr->move_to (self.x0, self.y1);
cr->line_to (self.x1, self.y1);
}
cr->stroke ();
/* draw ticks + text */
@ -136,6 +130,7 @@ Ruler::render (Rect const & area, Cairo::RefPtr<Cairo::Context> cr) const
pos.y = self.y1; /* bottom edge */
if (_outline_width == 1.0) {
/* Cairo single pixel line correction */
cr->move_to (pos.x + 0.5, pos.y);
} else {
cr->move_to (pos.x, pos.y);