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/*
* Copyright (C) 2020 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2020 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-tk-lib
* Created on: 20 июн. 2017 г.
*
* lsp-tk-lib is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* lsp-tk-lib 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with lsp-tk-lib. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef LSP_PLUG_IN_TK_WIDGETS_CONTAINERS_BOX_H_
#define LSP_PLUG_IN_TK_WIDGETS_CONTAINERS_BOX_H_
#ifndef LSP_PLUG_IN_TK_IMPL
#error "use <lsp-plug.in/tk/tk.h>"
#endif
namespace lsp
{
namespace tk
{
// Style definition
namespace style
{
LSP_TK_STYLE_DEF_BEGIN(Box, WidgetContainer)
prop::Integer sSpacing;
prop::Integer sBorder; // Border size
prop::Boolean sHomogeneous;
prop::Orientation sOrientation;
prop::SizeConstraints sConstraints; // Size constraints
prop::Color sBorderColor; // Border color
prop::Boolean sSolid; // Solid state: acts as a widget
LSP_TK_STYLE_DEF_END
}
/**
* Implements widget container that allows to pack all elements
* horizontally or vertically depending on settings
*/
class Box: public WidgetContainer
{
public:
static const w_class_t metadata;
protected:
typedef struct cell_t
{
ws::rectangle_t a; // Allocated space for widget
ws::rectangle_t s; // Really used space by widget
Widget *pWidget; // Widget contained in the cell
} cell_t;
enum state_t
{
F_MOUSE_IN = 1 << 0,
F_MOUSE_DOWN = 1 << 1,
F_MOUSE_IGN = 1 << 2,
};
protected:
size_t nMFlags;
size_t nState;
lltl::darray<cell_t> vVisible;
prop::WidgetList<Widget> vItems;
prop::CollectionListener sIListener; // Listener to trigger vItems content change
prop::Integer sSpacing;
prop::Integer sBorder; // Border size
prop::Boolean sHomogeneous;
prop::Orientation sOrientation;
prop::SizeConstraints sConstraints; // Size constraints
prop::Color sBorderColor; // Border color
prop::Boolean sSolid; // Solid state: acts as a widget
protected:
status_t visible_items(lltl::darray<cell_t> *out);
void do_destroy();
static void on_add_item(void *obj, Property *prop, void *w);
static void on_remove_item(void *obj, Property *prop, void *w);
status_t allocate_homogeneous(const ws::rectangle_t *r, lltl::darray<cell_t> &visible);
status_t allocate_proportional(const ws::rectangle_t *r, lltl::darray<cell_t> &visible);
void allocate_widget_space(const ws::rectangle_t *r, lltl::darray<cell_t> &visible, ssize_t spacing);
void realize_children(lltl::darray<cell_t> &visible);
protected:
static status_t slot_on_submit(Widget *sender, void *ptr, void *data);
protected:
virtual void size_request(ws::size_limit_t *r) override;
virtual void property_changed(Property *prop) override;
virtual void realize(const ws::rectangle_t *r) override;
public:
explicit Box(Display *dpy);
Box(const Box &) = delete;
Box(Box &&) = delete;
virtual ~Box();
Box & operator = (const Box &) = delete;
Box & operator = (Box &&) = delete;
virtual status_t init() override;
virtual void destroy() override;
//---------------------------------------------------------------------------------
// Properties
public:
/**
* Spacing between widget allocations
* @return spacing property
*/
LSP_TK_PROPERTY(Integer, spacing, &sSpacing)
/**
* The size of the border around the box
* @return size of border around the box
*/
LSP_TK_PROPERTY(Integer, border, &sBorder)
/**
* Get proportional flag
* @return proportional flag property
*/
LSP_TK_PROPERTY(Boolean, homogeneous, &sHomogeneous)
/**
* Get box orientation
* @return box orientation
*/
LSP_TK_PROPERTY(Orientation, orientation, &sOrientation)
/**
* Get size constraints of the box
* @return size constraints of the box
*/
LSP_TK_PROPERTY(SizeConstraints, constraints, &sConstraints)
/**
* Get the color of the surrounding border
* @return color of the surrounding border
*/
LSP_TK_PROPERTY(Color, border_color, &sBorderColor)
/**
* Get the solid flag of the container. If container is solid, it acts as an widget
*/
LSP_TK_PROPERTY(Boolean, solid, &sSolid)
/**
* Get collection of widgets
* @return collection of widgets
*/
LSP_TK_PROPERTY(WidgetList<Widget>, items, &vItems)
//---------------------------------------------------------------------------------
// Manipulation
public:
virtual Widget *find_widget(ssize_t x, ssize_t y) override;
virtual void render(ws::ISurface *s, const ws::rectangle_t *area, bool force) override;
virtual status_t add(Widget *widget) override;
virtual status_t remove(Widget *child) override;
virtual status_t remove_all() override;
virtual status_t on_mouse_in(const ws::event_t *e) override;
virtual status_t on_mouse_out(const ws::event_t *e) override;
virtual status_t on_mouse_move(const ws::event_t *e) override;
virtual status_t on_mouse_down(const ws::event_t *e) override;
virtual status_t on_mouse_up(const ws::event_t *e) override;
virtual status_t on_submit();
};
} /* namespace tk */
} /* namespace lsp */
#endif /* LSP_PLUG_IN_TK_WIDGETS_CONTAINERS_BOX_H_ */
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