#include <cairomm/context.h>
#include "pbd/signals.h"
+
+#include "canvas/visibility.h"
+
#include "canvas/root_group.h"
+namespace Gtk {
+ class Window;
+ class Label;
+}
+
namespace ArdourCanvas
{
+struct Rect;
-class Rect;
-class Group;
+class Item;
+class ScrollGroup;
/** The base class for our different types of canvas.
*
* rightwards and y increases downwards.
*/
-class Canvas
+class LIBCANVAS_API Canvas
{
public:
Canvas ();
virtual ~Canvas () {}
- /** called to request a redraw of an area of the canvas */
+ /** called to request a redraw of an area of the canvas in WINDOW coordinates */
virtual void request_redraw (Rect const &) = 0;
/** called to ask the canvas to request a particular size from its host */
virtual void request_size (Duple) = 0;
void render (Rect const &, Cairo::RefPtr<Cairo::Context> const &) const;
/** @return root group */
- Group* root () {
+ Item* root () {
return &_root;
}
+ void set_background_color (ArdourCanvas::Color);
+ ArdourCanvas::Color background_color() const { return _bg_color; }
+
/** Called when an item is being destroyed */
virtual void item_going_away (Item *, boost::optional<Rect>) {}
void item_shown_or_hidden (Item *);
void item_changed (Item *, boost::optional<Rect>);
void item_moved (Item *, boost::optional<Rect>);
- virtual Cairo::RefPtr<Cairo::Context> context () = 0;
-
- Rect canvas_to_window (Rect const&) const;
- Rect window_to_canvas (Rect const&) const;
- Duple canvas_to_window (Duple const&) const;
+ Duple canvas_to_window (Duple const&, bool rounded = true) const;
Duple window_to_canvas (Duple const&) const;
void canvas_to_window (Coord cx, Coord cy, Coord& wx, Coord& wy) {
}
void scroll_to (Coord x, Coord y);
- virtual Rect visible_area () const = 0;
+ void add_scroller (ScrollGroup& i);
+
+ virtual Rect visible_area () const = 0;
+ virtual Coord width () const = 0;
+ virtual Coord height () const = 0;
+
+ /** Store the coordinates of the mouse pointer in window coordinates in
+ @param winpos. Return true if the position was within the window,
+ false otherwise.
+ */
+ virtual bool get_mouse_position (Duple& winpos) const = 0;
+
+ /** Signal to be used by items that need to track the mouse position
+ within the window.
+ */
+ sigc::signal<void,Duple const&> MouseMotion;
+
+ /** Ensures that the position given by @param winpos (in window
+ coordinates) is within the current window area, possibly reduced by
+ @param border.
+ */
+ Duple clamp_to_window (Duple const& winpos, Duple border = Duple());
void zoomed();
-
+
std::string indent() const;
std::string render_indent() const;
void dump (std::ostream&) const;
-
-protected:
- void queue_draw_item_area (Item *, Rect);
+
+ /** Ask the canvas to pick the current item again, and generate
+ an enter event for it.
+ */
+ virtual void re_enter () = 0;
+
+ virtual void start_tooltip_timeout (Item*) {}
+ virtual void stop_tooltip_timeout () {}
+
+ /** Set the timeout used to display tooltips, in milliseconds
+ */
+ static void set_tooltip_timeout (uint32_t msecs);
- /** our root group */
- RootGroup _root;
+protected:
+ Root _root;
+ Color _bg_color;
- Coord _scroll_offset_x;
- Coord _scroll_offset_y;
+ static uint32_t tooltip_timeout_msecs;
- virtual void enter_leave_items (int state) = 0;
- virtual void enter_leave_items (Duple const &, int state) = 0;
+ void queue_draw_item_area (Item *, Rect);
+ virtual void pick_current_item (int state) = 0;
+ virtual void pick_current_item (Duple const &, int state) = 0;
+
+ std::list<ScrollGroup*> scrollers;
};
/** A canvas which renders onto a GTK EventBox */
-class GtkCanvas : public Canvas, public Gtk::EventBox
+class LIBCANVAS_API GtkCanvas : public Canvas, public Gtk::EventBox
{
public:
GtkCanvas ();
void focus (Item *);
void unfocus (Item*);
- Cairo::RefPtr<Cairo::Context> context ();
-
Rect visible_area () const;
+ Coord width() const;
+ Coord height() const;
+
+ bool get_mouse_position (Duple& winpos) const;
+
+ void set_single_exposure (bool s) { _single_exposure = s; }
+ bool single_exposure () { return _single_exposure; }
+
+ void re_enter ();
+
+ void start_tooltip_timeout (Item*);
+ void stop_tooltip_timeout ();
protected:
+ void on_size_allocate (Gtk::Allocation&);
+ bool on_scroll_event (GdkEventScroll *);
bool on_expose_event (GdkEventExpose *);
+ bool on_key_press_event (GdkEventKey *);
+ bool on_key_release_event (GdkEventKey *);
bool on_button_press_event (GdkEventButton *);
bool on_button_release_event (GdkEventButton* event);
bool on_motion_notify_event (GdkEventMotion *);
bool button_handler (GdkEventButton *);
bool motion_notify_handler (GdkEventMotion *);
- bool deliver_event (Duple, GdkEvent *);
+ bool deliver_event (GdkEvent *);
+ void deliver_enter_leave (Duple const & point, int state);
- void enter_leave_items (int state);
- void enter_leave_items (Duple const &, int state);
+ void pick_current_item (int state);
+ void pick_current_item (Duple const &, int state);
private:
void item_going_away (Item *, boost::optional<Rect>);
bool send_leave_event (Item const *, double, double) const;
- /** Items that the pointer is currently within */
- std::set<Item const *> within_items;
+ Cairo::RefPtr<Cairo::Surface> canvas_image;
+
+ /** Item currently chosen for event delivery based on pointer position */
+ Item * _current_item;
+ /** Item pending as _current_item */
+ Item * _new_current_item;
/** the item that is currently grabbed, or 0 */
- Item const * _grabbed_item;
+ Item * _grabbed_item;
/** the item that currently has key focus or 0 */
- Item const * _focused_item;
+ Item * _focused_item;
+
+ bool _single_exposure;
+
+ sigc::connection tooltip_timeout_connection;
+ Item* current_tooltip_item;
+ Gtk::Window* tooltip_window;
+ Gtk::Label* tooltip_label;
+ bool show_tooltip ();
+ void hide_tooltip ();
+ bool really_start_tooltip_timeout ();
};
/** A GTK::Alignment with a GtkCanvas inside it plus some Gtk::Adjustments for
- * scrolling.
+ * scrolling.
*
* This provides a GtkCanvas that can be scrolled. It does NOT implement the
* Gtk::Scrollable interface.
*/
-class GtkCanvasViewport : public Gtk::Alignment
+class LIBCANVAS_API GtkCanvasViewport : public Gtk::Alignment
{
public:
GtkCanvasViewport (Gtk::Adjustment &, Gtk::Adjustment &);
projects / ardour.git / blobdiff