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/*
* Copyright (C) 2025 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2025 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-tk-lib
* Created on: 17 авг. 2020 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_SPECIFIC_FRACTION_H_
#define LSP_PLUG_IN_TK_WIDGETS_SPECIFIC_FRACTION_H_
#ifndef LSP_PLUG_IN_TK_IMPL
#error "use <lsp-plug.in/tk/tk.h>"
#endif
namespace lsp
{
namespace tk
{
// Style definition
namespace style
{
typedef struct FractionColors
{
prop::Color sColor; // Fraction color
prop::Color sNumColor; // Fraction numerator color
prop::Color sDenColor; // Fraction denominator color
void listener(tk::prop::Listener *listener);
bool property_changed(Property *prop);
} FractionColors;
enum FractionColorState
{
FRACTION_NORMAL = 0,
FRACTION_INACTIVE = 1 << 0,
FRACTION_TOTAL = 1 << 1
};
LSP_TK_STYLE_DEF_BEGIN(Fraction, Widget)
FractionColors vColors[FRACTION_TOTAL];
prop::Font sFont; // Font
prop::Float sAngle; // Fraction angle
prop::Integer sTextPad; // Text padding
prop::Integer sThick; // Thickness
prop::Boolean sActive; // Activity flag
prop::String sItemText[2];
prop::Boolean sItemOpened[2];
LSP_TK_STYLE_DEF_END
}
/**
* Fraction widgets, implements A / B fraction drawn in the UI where A and B provides
* dropdown lists of any value.
*/
class Fraction: public Widget
{
public:
static const w_class_t metadata;
private:
static const tether_t tether_list[];
protected:
enum mstate_t
{
NUM_CLICK = 1 << 0,
DENOM_CLICK = 1 << 1,
NONE_CLICK = 1 << 2
};
typedef struct alloc_t
{
ws::rectangle_t sNum;
ws::rectangle_t sDen;
ws::rectangle_t sSize;
float dx;
float dy;
} alloc_t;
enum frac_flags_t
{
FRAC_0 = style::FRACTION_NORMAL,
FRAC_1 = style::FRACTION_INACTIVE,
FRAC_TOTAL = style::FRACTION_TOTAL
};
class Combo;
class Window: public PopupWindow
{
public:
static const w_class_t metadata;
private:
Fraction *pFrac;
Combo *pCombo;
public:
explicit Window(Display *dpy, Fraction *frac, Combo *combo);
virtual status_t on_hide() override;
virtual status_t on_show() override;
};
class List: public ListBox
{
public:
static const w_class_t metadata;
private:
Fraction *pFrac;
Combo *pCombo;
public:
explicit List(Display *dpy, Fraction *cbox, Combo *combo);
protected:
virtual void property_changed(Property *prop) override;
public:
virtual status_t on_submit() override;
virtual status_t on_change() override;
};
class Combo
{
public:
Fraction *pFrac;
List sList;
Window sWindow;
prop::String sText;
prop::WidgetPtr<ListBoxItem> sSelected;
prop::Boolean sOpened;
ws::rectangle_t sArea;
public:
explicit Combo(Display *dpy, Fraction *frac);
status_t init(size_t idx);
void destroy();
public:
void property_changed(Property *prop);
bool scroll_item(ssize_t direction, size_t count);
};
protected:
Combo sNum; // Numerator combo
Combo sDen; // Denominator combo
style::FractionColors vColors[style::FRACTION_TOTAL];
prop::Font sFont; // Font
prop::Float sAngle; // Fraction angle
prop::Integer sTextPad; // Text padding
prop::Integer sThick; // Thickness
prop::Boolean sActive; // Activity flag
size_t nMBState; // Mouse button state
mstate_t enTrgState; // Trigger state
protected:
static status_t slot_on_change(Widget *sender, void *ptr, void *data);
static status_t slot_on_submit(Widget *sender, void *ptr, void *data);
protected:
void do_destroy();
void set_visibility(Combo *cb, bool visible);
ssize_t estimate_size(Combo *cb, ws::rectangle_t *r);
void allocate(alloc_t *a);
bool check_mouse_over(const ws::rectangle_t *area, const ws::event_t *ev);
style::FractionColors *select_colors();
protected:
virtual void property_changed(Property *prop) override;
virtual void size_request(ws::size_limit_t *r) override;
virtual void realize(const ws::rectangle_t *r) override;
public:
explicit Fraction(Display *dpy);
Fraction(const Fraction &) = delete;
Fraction(Fraction &&) = delete;
virtual ~Fraction() override;
Fraction & operator = (const Fraction &) = delete;
Fraction & operator = (Fraction &&) = delete;
virtual status_t init() override;
virtual void destroy() override;
public:
LSP_TK_PROPERTY(Color, color, &vColors[FRAC_0].sColor)
LSP_TK_PROPERTY(Color, num_color, &vColors[FRAC_0].sNumColor)
LSP_TK_PROPERTY(Color, den_color, &vColors[FRAC_0].sDenColor)
LSP_TK_PROPERTY(Color, inactive_color, &vColors[FRAC_1].sColor)
LSP_TK_PROPERTY(Color, inactive_num_color, &vColors[FRAC_1].sNumColor)
LSP_TK_PROPERTY(Color, inactive_den_color, &vColors[FRAC_1].sDenColor)
LSP_TK_PROPERTY(Font, font, &sFont)
LSP_TK_PROPERTY(Float, angle, &sAngle)
LSP_TK_PROPERTY(Integer, text_pad, &sTextPad)
LSP_TK_PROPERTY(Integer, thickness, &sThick)
LSP_TK_PROPERTY(Boolean, active, &sActive)
LSP_TK_PROPERTY(String, num_empty_text, &sNum.sText)
LSP_TK_PROPERTY(WidgetPtr<ListBoxItem>, num_selected, &sNum.sSelected)
LSP_TK_PROPERTY(WidgetList<ListBoxItem>, num_items, sNum.sList.items())
LSP_TK_PROPERTY(Boolean, num_opened, &sNum.sOpened)
LSP_TK_PROPERTY(String, den_empty_text, &sDen.sText)
LSP_TK_PROPERTY(WidgetPtr<ListBoxItem>, den_selected, &sDen.sSelected)
LSP_TK_PROPERTY(WidgetList<ListBoxItem>, den_items, sDen.sList.items())
LSP_TK_PROPERTY(Boolean, den_opened, &sDen.sOpened)
public:
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_mouse_scroll(const ws::event_t *e) override;
virtual void draw(ws::ISurface *s) override;
public:
virtual status_t on_change();
virtual status_t on_submit();
};
} /* namespace tk */
} /* namespace lsp */
#endif /* LSP_PLUG_IN_TK_WIDGETS_SPECIFIC_FRACTION_H_ */
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