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Diffstat (limited to 'gtk2_ardour/lineset.h')
| -rw-r--r-- | gtk2_ardour/lineset.h | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/gtk2_ardour/lineset.h b/gtk2_ardour/lineset.h deleted file mode 100644 index 2f9a61d039..0000000000 --- a/gtk2_ardour/lineset.h +++ /dev/null @@ -1,194 +0,0 @@ -/* - Copyright (C) 2007 Paul Davis - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - -#ifndef __gnome_canvas_lineset_h__ -#define __gnome_canvas_lineset_h__ - -#include <stdint.h> -#include <libgnomecanvasmm/item.h> - -namespace Gnome { -namespace Canvas { - -class LineSetClass : public Glib::Class { -public: - const Glib::Class& init(); - static void class_init_function(void* g_class, void* class_data); -}; - -/** A canvas item that displays a set of vertical or horizontal lines, - * spanning the entire size of the item. - */ -class LineSet : public Item { -public: - enum Orientation { - Vertical, - Horizontal - }; - - LineSet(Group& parent, Orientation); - virtual ~LineSet(); - - Glib::PropertyProxy<double> property_x1() { return x1.get_proxy(); } - Glib::PropertyProxy<double> property_y1() { return y1.get_proxy(); } - Glib::PropertyProxy<double> property_x2() { return x2.get_proxy(); } - Glib::PropertyProxy<double> property_y2() { return y2.get_proxy(); } - - /* Note: every line operation takes a coord parameter, as an index to - * the line it modifies. The index will identify a line if it is between - * line.coord and line.coord + line.width. - */ - - /** Move a line to a new position. - * For this to work (to move the desired line) it is important that - * lines have unique coordinates. This also applies to every line - * accessing functions below - */ - void move_line(double coord, double dest); - - /** Change the width of a line. - * Only allow if the new width doesn't overlap the next line (see below) - */ - void change_line_width(double coord, double width); - - /** Change the color of a line. - */ - void change_line_color(double coord, uint32_t color); - - /** Add a line to draw. - * width is an offset, so that coord + width specifies the end of the line. - * lines should not overlap, as no layering information is provided. - * however, line_coord[i] + line_width[i] == line_coord[i+1] is - * be legal, as the coordinates are real numbers and represents - * real world coordinates. Two real world object sharing coordinates for start - * and end are not overlapping. - */ - void add_line(double coord, double width, uint32_t color); - - /** Remove the line at coord - */ - void remove_line(double coord); - - /** Remove all lines in a coordinate range - */ - void remove_lines(double c1, double c2); - - /** Remove all lines with a coordinate lower than coord - */ - void remove_until(double coord); - - /** Remove all lines with a coordinate equal to or higher than coord. - */ - void remove_from(double coord); - - /** Remove all lines. - */ - void clear(); - - /** Add a set of lines in the given range. - * For every line visible in the provided coordinate range, call add_line(). - * This is called when the area between c1 and c2 becomes visible, when - * previously outside any possible view. - * The number of calls to this function should be kept at a minimum. - */ - virtual void request_lines(double c1, double c2); - - /** Instead of overriding the update_lines function one can connect to this - * and add lines externally instead. - * If add_lines() is overrided, this signal will not be emitted. - */ - sigc::signal<void, LineSet&, double, double> signal_request_lines; - - /* overridden from Gnome::Canvas::Item */ - void update_vfunc(double* affine, ArtSVP* clip_path, int flags); - void realize_vfunc(); - void unrealize_vfunc(); - void map_vfunc(); - void unmap_vfunc(); - void draw_vfunc(const Glib::RefPtr<Gdk::Drawable>& drawable, int x, int y, int width, int height); - void render_vfunc(GnomeCanvasBuf* buf); - double point_vfunc(double x, double y, int cx, int cy, GnomeCanvasItem** actual_item); - void bounds_vfunc(double* x1, double* y1, double* x2, double* y2); - bool on_event(GdkEvent* p1); - - /* debug */ - void print_lines(); - -protected: - struct Line { - Line(double c, double w, uint32_t color); - Line(double c); - - void set_color(uint32_t color); - - double coord; - double width; - unsigned char r; - unsigned char g; - unsigned char b; - unsigned char a; - }; - - static inline void paint_vert(GnomeCanvasBuf* buf, LineSet::Line& line, int x1, int y1, int x2, int y2); - static inline void paint_horiz(GnomeCanvasBuf* buf, LineSet::Line& line, int x1, int y1, int x2, int y2); - - static bool line_compare(const Line& a, const Line& b); - - typedef std::list<Line> Lines; - void bounds_need_update(); - void region_needs_update(double coord1, double coord2); - bool update_bounds(); - void update_lines(bool need_redraw); - void redraw_request (ArtDRect const &); - - Lines::iterator line_at(double coord); - - /** Stores last accessed line so adjacent lines are found faster */ - Lines::iterator cached_pos; - - static LineSetClass lineset_class; - Orientation orientation; - Lines lines; - - /* properties */ - Glib::Property<double> x1; - Glib::Property<double> y1; - Glib::Property<double> x2; - Glib::Property<double> y2; - - /** Cached bounding box in canvas coordinates */ - ArtIRect bbox; - -private: - LineSet(); - LineSet(const LineSet&); - - bool in_update; - - /* a range that needs update update1 > update2 ==> no update needed */ - double update_region1; - double update_region2; - bool bounds_changed; - - double covered1; - double covered2; -}; - -} /* namespace Canvas */ -} /* namespace Gnome */ - -#endif /* __gnome_canvas_lineset_h__ */ |