polybar/include/components/renderer.hpp

141 lines
4.0 KiB
C++

#pragma once
#include <bitset>
#include <cairo/cairo.h>
#include <memory>
#include "cairo/fwd.hpp"
#include "common.hpp"
#include "components/types.hpp"
#include "events/signal_fwd.hpp"
#include "events/signal_receiver.hpp"
#include "x11/extensions/fwd.hpp"
#include "x11/types.hpp"
POLYBAR_NS
// fwd {{{
class connection;
class config;
class logger;
class background_manager;
class bg_slice;
// }}}
using std::map;
struct alignment_block {
cairo_pattern_t* pattern;
double x;
double y;
};
class renderer
: public signal_receiver<SIGN_PRIORITY_RENDERER, signals::ui::request_snapshot, signals::parser::change_background,
signals::parser::change_foreground, signals::parser::change_underline, signals::parser::change_overline,
signals::parser::change_font, signals::parser::change_alignment, signals::parser::reverse_colors,
signals::parser::offset_pixel, signals::parser::attribute_set, signals::parser::attribute_unset,
signals::parser::attribute_toggle, signals::parser::action_begin, signals::parser::action_end,
signals::parser::text> {
public:
using make_type = unique_ptr<renderer>;
static make_type make(const bar_settings& bar);
explicit renderer(
connection& conn, signal_emitter& sig, const config&, const logger& logger, const bar_settings& bar, background_manager& background_manager);
~renderer();
xcb_window_t window() const;
const vector<action_block> actions() const;
void begin(xcb_rectangle_t rect);
void end();
void flush();
#if 0
void reserve_space(edge side, unsigned int w);
#endif
void fill_background();
void fill_overline(double x, double w);
void fill_underline(double x, double w);
void fill_borders();
void draw_text(const string& contents);
protected:
double block_x(alignment a) const;
double block_y(alignment a) const;
double block_w(alignment a) const;
double block_h(alignment a) const;
void flush(alignment a);
void highlight_clickable_areas();
bool on(const signals::ui::request_snapshot& evt);
bool on(const signals::parser::change_background& evt);
bool on(const signals::parser::change_foreground& evt);
bool on(const signals::parser::change_underline& evt);
bool on(const signals::parser::change_overline& evt);
bool on(const signals::parser::change_font& evt);
bool on(const signals::parser::change_alignment& evt);
bool on(const signals::parser::reverse_colors&);
bool on(const signals::parser::offset_pixel& evt);
bool on(const signals::parser::attribute_set& evt);
bool on(const signals::parser::attribute_unset& evt);
bool on(const signals::parser::attribute_toggle& evt);
bool on(const signals::parser::action_begin& evt);
bool on(const signals::parser::action_end& evt);
bool on(const signals::parser::text& evt);
protected:
struct reserve_area {
edge side{edge::NONE};
unsigned int size{0U};
};
private:
connection& m_connection;
signal_emitter& m_sig;
const config& m_conf;
const logger& m_log;
const bar_settings& m_bar;
std::shared_ptr<bg_slice> m_background;
int m_depth{32};
xcb_window_t m_window;
xcb_colormap_t m_colormap;
xcb_visualtype_t* m_visual;
xcb_gcontext_t m_gcontext;
xcb_pixmap_t m_pixmap;
xcb_rectangle_t m_rect{0, 0, 0U, 0U};
reserve_area m_cleararea{};
// bool m_autosize{false};
unique_ptr<cairo::context> m_context;
unique_ptr<cairo::xcb_surface> m_surface;
map<alignment, alignment_block> m_blocks;
cairo_pattern_t* m_cornermask{};
cairo_operator_t m_comp_bg{CAIRO_OPERATOR_SOURCE};
cairo_operator_t m_comp_fg{CAIRO_OPERATOR_OVER};
cairo_operator_t m_comp_ol{CAIRO_OPERATOR_OVER};
cairo_operator_t m_comp_ul{CAIRO_OPERATOR_OVER};
cairo_operator_t m_comp_border{CAIRO_OPERATOR_OVER};
bool m_pseudo_transparency{false};
alignment m_align;
std::bitset<3> m_attr;
int m_font{0};
unsigned int m_bg{0U};
unsigned int m_fg{0U};
unsigned int m_ol{0U};
unsigned int m_ul{0U};
vector<action_block> m_actions;
bool m_fixedcenter;
string m_snapshot_dst;
};
POLYBAR_NS_END