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/*
Copyright (C) 2011 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 __libgtmm2ext_cairocell_h__
#define __libgtmm2ext_cairocell_h__
#include <map>
#include <stdint.h>
#include <cairomm/cairomm.h>
#include <gtkmm.h>
class CairoCell
{
public:
CairoCell();
virtual ~CairoCell() {}
virtual void render (Cairo::RefPtr<Cairo::Context>&) = 0;
double x() const { return bbox.x; }
double y() const { return bbox.y; }
double width() const { return bbox.width; }
double height() const { return bbox.height; }
void set_position (double x, double y) {
bbox.x = x;
bbox.y = y;
}
bool intersects (GdkRectangle& r) const {
return gdk_rectangle_intersect (&r, &bbox, 0);
}
bool covers (double x, double y) const {
return bbox.x <= x && bbox.x + bbox.width > x &&
bbox.y <= y && bbox.y + bbox.height > y;
}
double xpad() const { return _xpad; }
void set_xpad (double x) { _xpad = x; }
void set_visible (bool yn) { _visible = yn; }
bool visible() const { return _visible; }
virtual void set_size (Glib::RefPtr<Pango::Context>&, const Pango::FontDescription&) {}
protected:
GdkRectangle bbox;
bool _visible;
uint32_t _xpad;
};
class CairoBarCell : public CairoCell
{
public:
CairoBarCell() {};
void render (Cairo::RefPtr<Cairo::Context>& context) {
context->move_to (bbox.x, bbox.y);
context->set_line_width (bbox.width);
context->rel_line_to (0, bbox.height);
context->stroke ();
}
void set_size (Glib::RefPtr<Pango::Context>& context, const Pango::FontDescription& font) {
Pango::FontMetrics metrics = context->get_metrics (font);
bbox.width = 2;
bbox.height = (metrics.get_ascent() + metrics.get_descent()) / PANGO_SCALE;
}
private:
};
class CairoColonCell : public CairoCell
{
public:
CairoColonCell() {};
void render (Cairo::RefPtr<Cairo::Context>& context) {
/* two very small circles, at 1/3 and 2/3 of the height */
context->arc (bbox.x, bbox.y + (bbox.height/3.0), 1.5, 0.0, M_PI*2.0);
context->fill ();
context->arc (bbox.x, bbox.y + (2.0 * bbox.height/3.0), 1.5, 0.0, M_PI*2.0);
context->fill ();
}
void set_size (Glib::RefPtr<Pango::Context>& context, const Pango::FontDescription& font) {
Pango::FontMetrics metrics = context->get_metrics (font);
bbox.width = 3.0;
bbox.height = (metrics.get_ascent() + metrics.get_descent()) / PANGO_SCALE;
}
private:
};
class CairoTextCell : public CairoCell
{
public:
CairoTextCell (uint32_t width_chars);
void set_size (Glib::RefPtr<Pango::Context>&, const Pango::FontDescription&);
void set_text (const std::string& txt) {
layout->set_text (txt);
}
std::string get_text() const {
return layout->get_text ();
}
uint32_t width_chars() const { return _width_chars; }
void render (Cairo::RefPtr<Cairo::Context>&);
protected:
uint32_t _width_chars;
Glib::RefPtr<Pango::Layout> layout;
};
class CairoEditableText : public Gtk::Misc
{
public:
CairoEditableText ();
void add_cell (uint32_t id, CairoCell*);
CairoCell* get_cell (uint32_t id);
void set_text (uint32_t id, const std::string& text);
void set_colors (double cr, double cg, double cb, double ca) {
r = cr;
g = cg;
b = cb;
a = ca;
queue_draw ();
}
void set_edit_colors (double cr, double cg, double cb, double ca) {
edit_r = cr;
edit_g = cg;
edit_b = cb;
edit_a = ca;
queue_draw ();
}
void set_bg (double r, double g, double b, double a) {
bg_r = r;
bg_g = g;
bg_b = b;
bg_a = a;
}
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*);
void on_size_request (GtkRequisition*);
void on_size_allocate (Gtk::Allocation&);
bool on_focus_in_event (GdkEventFocus*);
bool on_focus_out_event (GdkEventFocus*);
void set_font (const std::string& str) {
font = Pango::FontDescription (str);
}
private:
typedef std::map<uint32_t,CairoCell*> CellMap;
CellMap cells;
Pango::FontDescription font;
uint32_t editing_id;
uint32_t editing_pos;
double width;
double max_cell_height;
double height;
double corner_radius;
double xpad;
double ypad;
double r;
double g;
double b;
double a;
double edit_r;
double edit_g;
double edit_b;
double edit_a;
double bg_r;
double bg_g;
double bg_b;
double bg_a;
CairoCell* find_cell (uint32_t x, uint32_t y, uint32_t& cell_id);
void edit_next_cell ();
void queue_draw_cell (CairoCell* target);
void set_text (CairoTextCell* cell, const std::string&);
};
#endif /* __libgtmm2ext_cairocell_h__ */
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