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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: 10 июл. 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_SIMPLE_KNOB_H_
#define LSP_PLUG_IN_TK_WIDGETS_SIMPLE_KNOB_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 KnobColors
{
prop::Color sColor;
prop::Color sScaleColor;
prop::Color sBalanceColor;
prop::Color sTipColor;
prop::Color sBalanceTipColor;
prop::Color sMeterColor;
void listener(tk::prop::Listener *listener);
bool property_changed(Property *prop);
} KnobColors;
enum KnobColorState
{
KNOB_NORMAL = 0,
KNOB_INACTIVE = 1 << 0,
KNOB_TOTAL = 1 << 1
};
LSP_TK_STYLE_DEF_BEGIN(Knob, Widget)
KnobColors vColors[KNOB_TOTAL];
prop::Color sHoleColor;
prop::SizeRange sSizeRange;
prop::Float sScale;
prop::RangeFloat sValue;
prop::StepFloat sStep;
prop::Float sBalance;
prop::Float sMeterMin;
prop::Float sMeterMax;
prop::Boolean sCycling;
prop::Boolean sScaleMarks;
prop::Boolean sBalanceColorCustom;
prop::Boolean sFlat;
prop::Boolean sScaleActive;
prop::Boolean sMeterActive;
prop::Boolean sEditable;
prop::Boolean sActive;
prop::Integer sHoleSize;
prop::Integer sGapSize;
prop::Float sScaleBrightness;
prop::Integer sBalanceTipSize;
prop::Boolean sBalanceTipColorCustom;
prop::Boolean sInvertMouseVScroll;
LSP_TK_STYLE_DEF_END
}
class Knob: public Widget
{
public:
static const w_class_t metadata;
protected:
enum state_t
{
S_NONE,
S_MOVING,
S_CLICK
};
enum knob_flags_t
{
KNOB_0 = style::KNOB_NORMAL,
KNOB_1 = style::KNOB_INACTIVE,
KNOB_TOTAL = style::KNOB_TOTAL
};
protected:
ssize_t nLastY;
size_t nState;
size_t nButtons;
style::KnobColors vColors[style::KNOB_TOTAL];
prop::Color sHoleColor;
prop::SizeRange sSizeRange;
prop::Float sScale;
prop::RangeFloat sValue;
prop::StepFloat sStep;
prop::Float sBalance;
prop::Float sMeterMin;
prop::Float sMeterMax;
prop::Boolean sCycling;
prop::Boolean sScaleMarks;
prop::Boolean sBalanceColorCustom;
prop::Boolean sFlat;
prop::Boolean sScaleActive;
prop::Boolean sMeterActive;
prop::Boolean sEditable;
prop::Boolean sActive;
prop::Integer sHoleSize;
prop::Integer sGapSize;
prop::Float sScaleBrightness;
prop::Integer sBalanceTipSize;
prop::Boolean sBalanceTipColorCustom;
prop::Boolean sInvertMouseVScroll;
protected:
size_t check_mouse_over(ssize_t x, ssize_t y);
void update_value(float delta);
void on_click(ssize_t x, ssize_t y);
style::KnobColors *select_colors();
protected:
static status_t slot_begin_edit(Widget *sender, void *ptr, void *data);
static status_t slot_on_change(Widget *sender, void *ptr, void *data);
static status_t slot_end_edit(Widget *sender, void *ptr, void *data);
protected:
virtual void size_request(ws::size_limit_t *r) override;
virtual void property_changed(Property *prop) override;
public:
explicit Knob(Display *dpy);
Knob(const Knob &) = delete;
Knob(Knob &&) = delete;
virtual ~Knob() override;
Knob & operator = (const Knob &) = delete;
Knob & operator = (Knob &&) = delete;
virtual status_t init() override;
public:
LSP_TK_PROPERTY(Color, color, &vColors[KNOB_0].sColor)
LSP_TK_PROPERTY(Color, scale_color, &vColors[KNOB_0].sScaleColor)
LSP_TK_PROPERTY(Color, balance_color, &vColors[KNOB_0].sBalanceColor)
LSP_TK_PROPERTY(Color, tip_color, &vColors[KNOB_0].sTipColor)
LSP_TK_PROPERTY(Color, balance_tip_color, &vColors[KNOB_0].sBalanceTipColor)
LSP_TK_PROPERTY(Color, meter_color, &vColors[KNOB_0].sMeterColor)
LSP_TK_PROPERTY(Color, inactive_color, &vColors[KNOB_1].sColor)
LSP_TK_PROPERTY(Color, inactive_scale_color, &vColors[KNOB_1].sScaleColor)
LSP_TK_PROPERTY(Color, inactive_balance_color, &vColors[KNOB_1].sBalanceColor)
LSP_TK_PROPERTY(Color, inactive_tip_color, &vColors[KNOB_1].sTipColor)
LSP_TK_PROPERTY(Color, inactive_balance_tip_color, &vColors[KNOB_1].sBalanceTipColor)
LSP_TK_PROPERTY(Color, inactive_meter_color, &vColors[KNOB_1].sMeterColor)
LSP_TK_PROPERTY(Color, hole_color, &sHoleColor)
LSP_TK_PROPERTY(SizeRange, size, &sSizeRange)
LSP_TK_PROPERTY(Float, scale, &sScale)
LSP_TK_PROPERTY(RangeFloat, value, &sValue)
LSP_TK_PROPERTY(StepFloat, step, &sStep)
LSP_TK_PROPERTY(Float, balance, &sBalance)
LSP_TK_PROPERTY(Float, meter_min, &sMeterMin)
LSP_TK_PROPERTY(Float, meter_max, &sMeterMax)
LSP_TK_PROPERTY(Boolean, cycling, &sCycling)
LSP_TK_PROPERTY(Boolean, scale_marks, &sScaleMarks)
LSP_TK_PROPERTY(Boolean, balance_color_custom, &sBalanceColorCustom)
LSP_TK_PROPERTY(Boolean, flat, &sFlat)
LSP_TK_PROPERTY(Boolean, scale_active, &sScaleActive)
LSP_TK_PROPERTY(Boolean, meter_active, &sMeterActive)
LSP_TK_PROPERTY(Boolean, editable, &sEditable)
LSP_TK_PROPERTY(Boolean, active, &sActive)
LSP_TK_PROPERTY(Integer, hole_size, &sHoleSize)
LSP_TK_PROPERTY(Integer, gap_size, &sGapSize)
LSP_TK_PROPERTY(Float, scale_brightness, &sScaleBrightness)
LSP_TK_PROPERTY(Integer, balance_tip_size, &sBalanceTipSize)
LSP_TK_PROPERTY(Boolean, balance_tip_color_custom, &sBalanceTipColorCustom)
LSP_TK_PROPERTY(Boolean, invert_mouse_vscroll, &sInvertMouseVScroll)
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_move(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;
virtual status_t on_begin_edit();
virtual status_t on_change();
virtual status_t on_end_edit();
};
} /* namespace tk */
} /* namespace lsp */
#endif /* LSP_PLUG_IN_TK_WIDGETS_SIMPLE_KNOB_H_ */
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