diff --git a/Userland/Libraries/LibGUI/CMakeLists.txt b/Userland/Libraries/LibGUI/CMakeLists.txt index c6e740f20d..f49d20a664 100644 --- a/Userland/Libraries/LibGUI/CMakeLists.txt +++ b/Userland/Libraries/LibGUI/CMakeLists.txt @@ -88,6 +88,7 @@ set(SOURCES ProcessChooser.cpp Progressbar.cpp RadioButton.cpp + RangeSlider.cpp RegularEditingEngine.cpp ResizeCorner.cpp RunningProcessesModel.cpp diff --git a/Userland/Libraries/LibGUI/RangeSlider.cpp b/Userland/Libraries/LibGUI/RangeSlider.cpp new file mode 100644 index 0000000000..ac179d0692 --- /dev/null +++ b/Userland/Libraries/LibGUI/RangeSlider.cpp @@ -0,0 +1,235 @@ +/* + * Copyright (c) 2023, Torsten Engelmann + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#include +#include +#include +#include + +REGISTER_WIDGET(GUI, RangeSlider) +REGISTER_WIDGET(GUI, HorizontalRangeSlider) + +namespace GUI { + +RangeSlider::RangeSlider(Gfx::Orientation orientation) + : AbstractSlider(orientation) + +{ + REGISTER_INT_PROPERTY("lower_range", lower_range, set_lower_range); + REGISTER_INT_PROPERTY("upper_range", upper_range, set_upper_range); + REGISTER_BOOL_PROPERTY("show_label", show_label, set_show_label); + + set_min(0); + set_max(100); + set_lower_range(0); + set_upper_range(100); + set_preferred_size(SpecialDimension::Fit); +} + +Gfx::IntRect RangeSlider::frame_inner_rect() const +{ + return rect().shrunken(4, 4); +} + +void RangeSlider::paint_event(PaintEvent& event) +{ + GUI::Painter painter(*this); + painter.add_clip_rect(event.rect()); + + auto inner_rect = frame_inner_rect(); + + // Grid pattern + Gfx::StylePainter::paint_transparency_grid(painter, inner_rect, palette()); + + // Alpha gradient + painter.fill_rect_with_linear_gradient(inner_rect, m_background_gradient, orientation() == Orientation::Horizontal ? 90.0f : 180.0f); + + Gfx::StylePainter::paint_button(painter, knob_rect_for_value(lower_range()), palette(), Gfx::ButtonStyle::Normal, false, m_hovered_lower_knob); + Gfx::StylePainter::paint_button(painter, knob_rect_for_value(upper_range()), palette(), Gfx::ButtonStyle::Normal, false, m_hovered_upper_knob); + + // Text label + if (m_show_label) { + auto range_text = DeprecatedString::formatted("{} to {}", lower_range(), upper_range()); + painter.draw_text(inner_rect.translated(1, 1), range_text, Gfx::TextAlignment::Center, Color::Black); + painter.draw_text(inner_rect, range_text, Gfx::TextAlignment::Center, Color::White); + } + + // Frame + Gfx::StylePainter::paint_frame(painter, rect(), palette(), Gfx::FrameStyle::SunkenContainer); +} + +int RangeSlider::value_at(Gfx::IntPoint position) const +{ + auto inner_rect = frame_inner_rect(); + auto relevant_position = position.primary_offset_for_orientation(orientation()), + begin_position = inner_rect.first_edge_for_orientation(orientation()), + end_position = inner_rect.last_edge_for_orientation(orientation()); + if (relevant_position < begin_position) + return min(); + if (relevant_position > end_position) + return max(); + + float relative_offset = static_cast(relevant_position - begin_position) / static_cast(inner_rect.primary_size_for_orientation(orientation())); + return min() + (relative_offset * static_cast(max() - min())); +} + +void RangeSlider::set_gradient_color(Gfx::Color from_color, Gfx::Color to_color) +{ + m_background_gradient = Vector { Gfx::ColorStop { from_color, 0 }, Gfx::ColorStop { to_color, 1 } }; + update(); +} + +void RangeSlider::set_gradient_colors(Vector colors) +{ + VERIFY(colors.size()); + m_background_gradient = colors; + update(); +} + +void RangeSlider::mousedown_event(MouseEvent& event) +{ + if (event.button() == MouseButton::Primary) { + m_dragging = true; + int clicked_value = value_at(event.position()); + if (m_hovered_lower_knob) + set_lower_range(clicked_value); + if (m_hovered_upper_knob) + set_upper_range(clicked_value); + if (!m_hovered_lower_knob && !m_hovered_upper_knob) { + if (clicked_value < lower_range()) + set_lower_range(lower_range() - AK::min(page_step(), lower_range() - clicked_value)); + if (clicked_value > upper_range()) + set_upper_range(upper_range() + AK::min(page_step(), clicked_value - upper_range())); + if (clicked_value > lower_range() && clicked_value < upper_range()) { + set_lower_range(lower_range() + page_step()); + set_upper_range(upper_range() - page_step()); + } + } + + return; + } + AbstractSlider::mousedown_event(event); +} + +void RangeSlider::mousemove_event(MouseEvent& event) +{ + if (m_dragging) { + if (m_hovered_lower_knob) + set_lower_range(value_at(event.position())); + if (m_hovered_upper_knob) + set_upper_range(value_at(event.position())); + + return; + } else { + m_hovered_lower_knob = knob_rect_for_value(lower_range()).contains(event.position()); + m_hovered_upper_knob = knob_rect_for_value(upper_range()).contains(event.position()); + } + AbstractSlider::mousemove_event(event); +} + +void RangeSlider::mouseup_event(MouseEvent& event) +{ + if (event.button() == MouseButton::Primary) { + m_dragging = false; + m_hovered_lower_knob = false; + m_hovered_upper_knob = false; + return; + } + AbstractSlider::mouseup_event(event); +} + +void RangeSlider::mousewheel_event(MouseEvent& event) +{ + set_lower_range(lower_range() + event.wheel_delta_y()); + + if (event.ctrl()) + set_upper_range(upper_range() + event.wheel_delta_y()); + else + set_upper_range(upper_range() - event.wheel_delta_y()); +} + +Optional RangeSlider::calculated_min_size() const +{ + if (orientation() == Gfx::Orientation::Vertical) + return { { 33, 40 } }; + return { { 40, 22 } }; +} + +Optional RangeSlider::calculated_preferred_size() const +{ + if (orientation() == Gfx::Orientation::Vertical) + return { { SpecialDimension::Shrink, SpecialDimension::OpportunisticGrow } }; + return { { SpecialDimension::OpportunisticGrow, SpecialDimension::Shrink } }; +} + +Gfx::IntRect RangeSlider::knob_rect_for_value(int value) const +{ + auto knob_rect = frame_inner_rect(); + knob_rect.set_left(knob_rect.left() + (static_cast(value + AK::abs(min())) / static_cast((max() - min())) * (knob_rect.width() - c_knob_width))); + knob_rect.set_width(c_knob_width); + + return knob_rect; +} + +void RangeSlider::set_lower_range(int value, AllowCallback allow_callback) +{ + if (lower_range() == value) + return; + + if (value > upper_range()) + m_lower_range = upper_range(); + else + m_lower_range = clamp(value, min(), max()); + + if (on_range_change && allow_callback == AllowCallback::Yes) + on_range_change(lower_range(), upper_range()); + + update(); +} + +int RangeSlider::lower_range() +{ + return m_lower_range; +} + +void RangeSlider::set_upper_range(int value, AllowCallback allow_callback) +{ + if (upper_range() == value) + return; + if (value < lower_range()) + m_upper_range = lower_range(); + else + m_upper_range = clamp(value, min(), max()); + + if (on_range_change && allow_callback == AllowCallback::Yes) + on_range_change(lower_range(), upper_range()); + + update(); +} + +int RangeSlider::upper_range() +{ + return m_upper_range; +} + +void RangeSlider::set_range(int min, int max) +{ + AbstractSlider::set_range(min, max); + set_lower_range(clamp(lower_range(), AbstractSlider::min(), AbstractSlider::max()), AllowCallback::No); + set_upper_range(clamp(upper_range(), AbstractSlider::min(), AbstractSlider::max()), AllowCallback::No); +} + +void RangeSlider::set_show_label(bool show_label) +{ + m_show_label = show_label; +} + +bool RangeSlider::show_label() +{ + return m_show_label; +} + +} diff --git a/Userland/Libraries/LibGUI/RangeSlider.h b/Userland/Libraries/LibGUI/RangeSlider.h new file mode 100644 index 0000000000..086543eb24 --- /dev/null +++ b/Userland/Libraries/LibGUI/RangeSlider.h @@ -0,0 +1,72 @@ +/* + * Copyright (c) 2023, Torsten Engelmann + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#pragma once + +#include + +namespace GUI { + +class RangeSlider : public AbstractSlider { + C_OBJECT(RangeSlider); + +public: + virtual ~RangeSlider() override = default; + + void set_gradient_color(Gfx::Color, Gfx::Color); + void set_gradient_colors(Vector); + void set_show_label(bool); + bool show_label(); + void set_lower_range(int value, AllowCallback allow_callback = AllowCallback::Yes); + void set_upper_range(int value, AllowCallback allow_callback = AllowCallback::Yes); + int lower_range(); + int upper_range(); + void set_range(int min, int max); + Function on_range_change; + +protected: + explicit RangeSlider(Gfx::Orientation = Gfx::Orientation::Horizontal); + + virtual void paint_event(PaintEvent&) override; + virtual void mousedown_event(MouseEvent&) override; + virtual void mousemove_event(MouseEvent&) override; + virtual void mouseup_event(MouseEvent&) override; + virtual void mousewheel_event(MouseEvent&) override; + +private: + Gfx::IntRect frame_inner_rect() const; + + Vector m_background_gradient = Vector { Gfx::ColorStop { { 0, 0, 0, 0 }, 0 }, Gfx::ColorStop { { 0, 0, 0, 255 }, 1 } }; + + virtual Optional calculated_min_size() const override; + virtual Optional calculated_preferred_size() const override; + + int value_at(Gfx::IntPoint) const; + Gfx::IntRect knob_rect_for_value(int value) const; + + bool m_show_label { true }; + bool m_dragging { false }; + bool m_hovered_lower_knob { false }; + bool m_hovered_upper_knob { false }; + int m_lower_range = 0; + int m_upper_range = 0; + int const c_knob_width = 7; +}; + +class HorizontalRangeSlider final : public RangeSlider { + C_OBJECT(HorizontalRangeSlider); + +public: + virtual ~HorizontalRangeSlider() override = default; + +private: + HorizontalRangeSlider() + : RangeSlider(Orientation::Horizontal) + { + } +}; + +}