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  • Committer: Daniel van Vugt
  • Date: 2015-04-28 07:54:10 UTC
  • mfrom: (2517 development-branch)
  • mto: This revision was merged to the branch mainline in revision 2673.
  • Revision ID: daniel.van.vugt@canonical.com-20150428075410-rwskshfuar7voesp
Merge latest trunk and fix conflicts.

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src/server/shell/canonical_window_manager.h
 
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/*
 
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 * Copyright © 2015 Canonical Ltd.
 
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 *
 
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 * This program is free software: you can redistribute it and/or modify it
 
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 * under the terms of the GNU General Public License version 3,
 
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 * as published by the Free Software Foundation.
 
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 *
 
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 * This program is distributed in the hope that it will be useful,
 
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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 * GNU General Public License for more details.
 
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 *
 
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 * You should have received a copy of the GNU General Public License
 
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 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
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 *
 
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 * Authored By: Alan Griffiths <alan@octopull.co.uk>
 
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 */
 
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#ifndef MIR_SHELL_CANONICAL_WINDOW_MANAGER_H_
 
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#define MIR_SHELL_CANONICAL_WINDOW_MANAGER_H_
 
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#include "basic_window_manager.h"
 
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#include "mir/geometry/displacement.h"
 
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namespace mir
 
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{
 
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namespace shell
 
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{
 
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class DisplayLayout;
 
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struct CanonicalSessionInfo
 
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{
 
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    int surfaces{0};
 
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};
 
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struct CanonicalSurfaceInfo
 
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{
 
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    CanonicalSurfaceInfo(
 
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        std::shared_ptr<scene::Session> const& session,
 
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        std::shared_ptr<scene::Surface> const& surface,
 
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        scene::SurfaceCreationParameters const& params);
 
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    MirSurfaceState state;
 
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    geometry::Rectangle restore_rect;
 
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    std::weak_ptr<scene::Session> session;
 
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    std::weak_ptr<scene::Surface> parent;
 
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    std::vector<std::weak_ptr<scene::Surface>> children;
 
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    optional_value<geometry::Width> min_width;
 
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    optional_value<geometry::Height> min_height;
 
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    optional_value<geometry::Width> max_width;
 
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    optional_value<geometry::Height> max_height;
 
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};
 
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// standard window management algorithm:
 
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//  o Switch apps: tap or click on the corresponding tile
 
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//  o Move window: Alt-leftmousebutton drag
 
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//  o Resize window: Alt-middle_button drag
 
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//  o Maximize/restore current window (to display size): Alt-F11
 
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//  o Maximize/restore current window (to display height): Shift-F11
 
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//  o Maximize/restore current window (to display width): Ctrl-F11
 
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//  o client requests to maximize, vertically maximize & restore
 
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class CanonicalWindowManagerPolicy
 
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{
 
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public:
 
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    using Tools = BasicWindowManagerTools<CanonicalSessionInfo, CanonicalSurfaceInfo>;
 
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    using CanonicalSessionInfoMap = typename SessionTo<CanonicalSessionInfo>::type;
 
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    explicit CanonicalWindowManagerPolicy(
 
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        Tools* const tools,
 
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        std::shared_ptr<shell::DisplayLayout> const& display_layout);
 
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    void click(geometry::Point cursor);
 
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    void handle_session_info_updated(CanonicalSessionInfoMap& session_info, geometry::Rectangles const& displays);
 
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    void handle_displays_updated(CanonicalSessionInfoMap& session_info, geometry::Rectangles const& displays);
 
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    void resize(geometry::Point cursor);
 
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    auto handle_place_new_surface(
 
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        std::shared_ptr<scene::Session> const& session,
 
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        scene::SurfaceCreationParameters const& request_parameters)
 
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    -> scene::SurfaceCreationParameters;
 
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    void handle_new_surface(std::shared_ptr<scene::Session> const& session, std::shared_ptr<scene::Surface> const& surface);
 
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    void handle_modify_surface(
 
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        std::shared_ptr<scene::Session> const& session,
 
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        std::shared_ptr<scene::Surface> const& surface,
 
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        SurfaceSpecification const& modifications);
 
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    void handle_delete_surface(std::shared_ptr<scene::Session> const& session, std::weak_ptr<scene::Surface> const& surface);
 
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    int handle_set_state(std::shared_ptr<scene::Surface> const& surface, MirSurfaceState value);
 
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    void drag(geometry::Point cursor);
 
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    bool handle_keyboard_event(MirKeyboardEvent const* event);
 
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    bool handle_touch_event(MirTouchEvent const* event);
 
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    bool handle_pointer_event(MirPointerEvent const* event);
 
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    std::vector<std::shared_ptr<scene::Surface>> generate_decorations_for(
 
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        std::shared_ptr<scene::Session> const& session, std::shared_ptr<scene::Surface> const& surface);
 
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private:
 
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    static const int modifier_mask =
 
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        mir_input_event_modifier_alt |
 
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        mir_input_event_modifier_shift |
 
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        mir_input_event_modifier_sym |
 
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        mir_input_event_modifier_ctrl |
 
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        mir_input_event_modifier_meta;
 
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    void toggle(MirSurfaceState state);
 
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    // "Mir and Unity: Surfaces, input, and displays (v0.3)" talks about active
 
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    //  *window*,but Mir really only understands surfaces
 
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    void select_active_surface(std::shared_ptr<scene::Surface> const& surface);
 
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    auto active_surface() const -> std::shared_ptr<scene::Surface>;
 
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    bool resize(std::shared_ptr<scene::Surface> const& surface, geometry::Point cursor, geometry::Point old_cursor, geometry::Rectangle bounds);
 
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    bool drag(std::shared_ptr<scene::Surface> surface, geometry::Point to, geometry::Point from, geometry::Rectangle bounds);
 
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    void move_tree(std::shared_ptr<scene::Surface> const& root, geometry::Displacement movement) const;
 
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    void raise_tree(std::shared_ptr<scene::Surface> const& root) const;
 
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    bool constrained_resize(
 
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        std::shared_ptr<scene::Surface> const& surface,
 
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        geometry::Point new_pos,
 
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        geometry::Size new_size,
 
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        const bool left_resize,
 
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        const bool top_resize,
 
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        geometry::Rectangle const& bounds);
 
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    Tools* const tools;
 
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    std::shared_ptr<DisplayLayout> const display_layout;
 
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    geometry::Rectangle display_area;
 
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    geometry::Point old_cursor{};
 
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    std::weak_ptr<scene::Surface> active_surface_;
 
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};
 
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using CanonicalWindowManager = BasicWindowManager<CanonicalWindowManagerPolicy, CanonicalSessionInfo, CanonicalSurfaceInfo>;
 
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}
 
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}
 
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#endif /* MIR_SHELL_CANONICAL_WINDOW_MANAGER_H_ */