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/*
* Copyright (c) 2017 TOYOTA MOTOR CORPORATION
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef WINDOW_MANAGER_HPP
#define WINDOW_MANAGER_HPP
#include <atomic>
#include <memory>
#include <unordered_map>
#include <experimental/optional>
#include "result.hpp"
#include "pm_wrapper.hpp"
#include "util.hpp"
#include "request.hpp"
#include "wm_error.hpp"
#include "wm_layer_control.hpp"
extern "C"
{
#include <afb/afb-binding.h>
}
struct json_object;
namespace wm
{
using std::experimental::optional;
/* DrawingArea name used by "{layout}.{area}" */
extern const char kNameLayoutNormal[];
extern const char kNameLayoutSplit[];
extern const char kNameAreaFull[];
extern const char kNameAreaMain[];
extern const char kNameAreaSub[];
/* Key for json obejct */
extern const char kKeyDrawingName[];
extern const char kKeyDrawingArea[];
extern const char kKeyDrawingRect[];
extern const char kKeyX[];
extern const char kKeyY[];
extern const char kKeyWidth[];
extern const char kKeyHeigh[];
extern const char kKeyWidthPixel[];
extern const char kKeyHeightPixel[];
extern const char kKeyWidthMm[];
extern const char kKeyHeightMm[];
extern const char kKeyScale[];
extern const char kKeyIds[];
struct id_allocator
{
unsigned next = 1;
// Surfaces that where requested but not yet created
std::unordered_map<unsigned, std::string> id2name;
std::unordered_map<std::string, unsigned> name2id;
id_allocator(id_allocator const &) = delete;
id_allocator(id_allocator &&) = delete;
id_allocator &operator=(id_allocator const &);
id_allocator &operator=(id_allocator &&) = delete;
// Insert and return a new ID
unsigned generate_id(std::string const &name)
{
unsigned sid = this->next++;
this->id2name[sid] = name;
this->name2id[name] = sid;
HMI_DEBUG("allocated new id %u with name %s", sid, name.c_str());
return sid;
}
// Insert a new ID which defined outside
void register_name_id(std::string const &name, unsigned sid)
{
this->id2name[sid] = name;
this->name2id[name] = sid;
HMI_DEBUG("register id %u with name %s", sid, name.c_str());
return;
}
// Lookup by ID or by name
optional<unsigned> lookup(std::string const &name) const
{
auto i = this->name2id.find(name);
return i == this->name2id.end() ? nullopt : optional<unsigned>(i->second);
}
optional<std::string> lookup(unsigned id) const
{
auto i = this->id2name.find(id);
return i == this->id2name.end() ? nullopt
: optional<std::string>(i->second);
}
// Remove a surface id and name
void remove_id(std::string const &name)
{
auto i = this->name2id.find(name);
if (i != this->name2id.end())
{
this->id2name.erase(i->second);
this->name2id.erase(i);
}
}
void remove_id(unsigned id)
{
auto i = this->id2name.find(id);
if (i != this->id2name.end())
{
this->name2id.erase(i->second);
this->id2name.erase(i);
}
}
};
struct TmpClient
{
std::string appid;
unsigned layer;
};
class WindowManager
{
public:
typedef std::unordered_map<uint32_t, struct rect> rect_map;
typedef std::function<void(const char *err_msg)> reply_func;
enum EventType
{
Event_Val_Min = 0,
Event_Active = Event_Val_Min,
Event_Inactive,
Event_Visible,
Event_Invisible,
Event_SyncDraw,
Event_FlushDraw,
Event_ScreenUpdated,
Event_Error,
Event_Val_Max = Event_Error,
};
explicit WindowManager();
~WindowManager() = default;
WindowManager(WindowManager const &) = delete;
WindowManager &operator=(WindowManager const &) = delete;
WindowManager(WindowManager &&) = delete;
WindowManager &operator=(WindowManager &&) = delete;
int init();
result<int> api_request_surface(char const *appid, char const *role);
char const *api_request_surface(char const *appid, char const *role, char const *ivi_id);
void api_activate_window(char const *appid, char const *role, char const *drawing_area, const reply_func &reply);
void api_deactivate_window(char const *appid, char const *role, const reply_func &reply);
void api_enddraw(char const *appid, char const *role);
json_object* api_get_area_list();
void api_change_area_size(ChangeAreaReq &areas);
bool api_subscribe(afb_req_t req, EventType event_id);
result<json_object *> api_get_display_info();
result<json_object *> api_get_area_info(char const *role);
// Events from the compositor we are interested in
void surface_created(unsigned surface_id);
void surface_removed(unsigned surface_id);
void removeClient(const std::string &appid);
void exceptionProcessForTransition();
// Do not use this function
void timerHandler();
void startTransitionWrapper(std::vector<WMAction> &actions);
void processError(WMError error);
private:
WMError setRequest(const std::string &appid, const std::string &role, const std::string &area,
Task task, unsigned *req_num);
WMError checkPolicy(unsigned req_num);
WMError startTransition(unsigned req_num);
WMError doEndDraw(unsigned req_num);
void emitScreenUpdated(unsigned req_num);
void setTimer();
void stopTimer();
void processNextRequest();
private:
std::map<std::string, afb_event_t> map_afb_event;
std::unordered_map<std::string, struct rect> area2size;
std::shared_ptr<LayerControl> lc;
PMWrapper pmw;
rect_map area_info;
struct id_allocator id_alloc;
// ID allocation and proxy methods for lookup
std::unordered_map<unsigned, struct TmpClient> tmp_surface2app;
};
} // namespace wm
#endif // WINDOW_MANAGER_HPP
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