ca538b6cee
You can now register a GWidget subclass with REGISTER_GWIDGET(class) and it will be available for factory construction through the new GWidgetClassRegistration interface. To obtain a GWidgetClassRegistration for a given class name, you call GWidgetClassRegistration::find(class_name). You can also iterate over all the registered classes using GWCR::for_each(callback). This will be very useful for implementing a proper GUI designer, and also in the future for things like script bindings. NOTE: All of the registrations are done in GWidget.cpp at the moment since I ran into trouble with the fricken linker pruning the global constructors this mechanism relies on. :^)
69 lines
1.9 KiB
C++
Executable file
69 lines
1.9 KiB
C++
Executable file
#pragma once
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#include <LibGUI/GWidget.h>
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class GSlider : public GWidget {
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C_OBJECT(GSlider)
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public:
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enum class KnobSizeMode {
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Fixed,
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Proportional,
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};
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virtual ~GSlider() override;
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Orientation orientation() const { return m_orientation; }
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int value() const { return m_value; }
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int min() const { return m_min; }
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int max() const { return m_max; }
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void set_range(int min, int max);
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void set_value(int);
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void set_min(int min) { set_range(min, max()); }
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void set_max(int max) { set_range(min(), max); }
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void set_knob_size_mode(KnobSizeMode mode) { m_knob_size_mode = mode; }
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KnobSizeMode knob_size_mode() const { return m_knob_size_mode; }
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int track_size() const { return 2; }
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int knob_fixed_primary_size() const { return 8; }
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int knob_secondary_size() const { return 20; }
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bool knob_dragging() const { return m_dragging; }
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Rect knob_rect() const;
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Rect inner_rect() const
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{
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if (orientation() == Orientation::Horizontal)
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return rect().shrunken(20, 0);
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return rect().shrunken(0, 20);
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}
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Function<void(int)> on_value_changed;
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protected:
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explicit GSlider(GWidget*);
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explicit GSlider(Orientation, GWidget*);
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virtual void paint_event(GPaintEvent&) override;
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virtual void mousedown_event(GMouseEvent&) override;
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virtual void mousemove_event(GMouseEvent&) override;
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virtual void mouseup_event(GMouseEvent&) override;
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virtual void leave_event(CEvent&) override;
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virtual void change_event(GEvent&) override;
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private:
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void set_knob_hovered(bool);
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int m_value { 0 };
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int m_min { 0 };
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int m_max { 100 };
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bool m_knob_hovered { false };
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bool m_dragging { false };
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int m_drag_origin_value { 0 };
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Point m_drag_origin;
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KnobSizeMode m_knob_size_mode { KnobSizeMode::Fixed };
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Orientation m_orientation { Orientation::Horizontal };
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};
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