/* Copyright 2013-2019 Matt Tytel
 *
 * vital is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * vital 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with vital.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "synth_section.h"

#include "skin.h"
#include "fonts.h"
#include "full_interface.h"
#include "modulation_button.h"
#include "open_gl_component.h"
#include "synth_gui_interface.h"
#include "synth_slider.h"

SynthSection::SynthSection(const String& name) : Component(name), parent_(nullptr), activator_(nullptr),
                                                 preset_selector_(nullptr), preset_selector_half_width_(false),
                                                 skin_override_(Skin::kNone), size_ratio_(1.0f),
                                                 active_(true), sideways_heading_(true) {
  setWantsKeyboardFocus(true);
}

float SynthSection::findValue(Skin::ValueId value_id) const {
  if (value_lookup_.count(value_id)) {
    if (Skin::shouldScaleValue(value_id))
      return size_ratio_ * value_lookup_.at(value_id);
    return value_lookup_.at(value_id);
  }
  if (parent_)
    return parent_->findValue(value_id);

  return 0.0f;
}

void SynthSection::reset() {
  for (auto& sub_section : sub_sections_)
    sub_section->reset();
}

void SynthSection::resized() {
  Component::resized();
  if (off_overlay_) {
    off_overlay_->setBounds(getLocalBounds());
    off_overlay_->setColor(findColour(Skin::kBackground, true).withMultipliedAlpha(0.8f));
  }
  if (activator_)
    activator_->setBounds(getPowerButtonBounds());
  if (preset_selector_) {
    preset_selector_->setBounds(getPresetBrowserBounds());
    preset_selector_->setRoundAmount(findValue(Skin::kBodyRounding));
  }
}

void SynthSection::paint(Graphics& g) { }

void SynthSection::paintSidewaysHeadingText(Graphics& g) {
  int title_width = findValue(Skin::kTitleWidth);
  g.setColour(findColour(Skin::kHeadingText, true));
  g.setFont(Fonts::instance()->proportional_light().withPointHeight(size_ratio_ * 14.0f));
  g.saveState();
  g.setOrigin(Point<int>(0, getHeight()));
  g.addTransform(AffineTransform::rotation(-vital::kPi / 2.0f));
  int height = getHeight();
  if (activator_)
    height = getHeight() - title_width / 2;

  g.drawText(getName(), Rectangle<int>(0, 0, height, title_width), Justification::centred, false);
  g.restoreState();
}

void SynthSection::paintHeadingText(Graphics& g) {
  if (sideways_heading_) {
    paintSidewaysHeadingText(g);
    return;
  }

  g.setColour(findColour(Skin::kHeadingText, true));
  g.setFont(Fonts::instance()->proportional_light().withPointHeight(size_ratio_ * 14.0f));
  g.drawText(TRANS(getName()), getTitleBounds(), Justification::centred, false);
}

void SynthSection::paintBackground(Graphics& g) {
  paintContainer(g);
  paintHeadingText(g);

  paintKnobShadows(g);
  paintChildrenBackgrounds(g);
  paintBorder(g);
}

void SynthSection::setSkinValues(const Skin& skin, bool top_level) {
  skin.setComponentColors(this, skin_override_, top_level);
  skin.setComponentValues(this, skin_override_, top_level);
  for (auto& sub_section : sub_sections_)
    sub_section->setSkinValues(skin, false);

  for (auto& open_gl_component : open_gl_components_)
    open_gl_component->setSkinValues(skin);
}

void SynthSection::repaintBackground() {
  if (!isShowing())
    return;

  FullInterface* parent = findParentComponentOfClass<FullInterface>();
  if (parent)
    parent->repaintChildBackground(this);
}

void SynthSection::showPopupBrowser(SynthSection* owner, Rectangle<int> bounds, std::vector<File> directories,
                                    String extensions, std::string passthrough_name,
                                    std::string additional_folders_name) {
  FullInterface* parent = findParentComponentOfClass<FullInterface>();
  if (parent)
    parent->popupBrowser(owner, bounds, directories, extensions, passthrough_name, additional_folders_name);
}

void SynthSection::updatePopupBrowser(SynthSection* owner) {
  FullInterface* parent = findParentComponentOfClass<FullInterface>();
  if (parent)
    parent->popupBrowserUpdate(owner);
}

void SynthSection::showPopupSelector(Component* source, Point<int> position, const PopupItems& options,
                                     std::function<void(int)> callback, std::function<void()> cancel) {
  FullInterface* parent = findParentComponentOfClass<FullInterface>();
  if (parent)
    parent->popupSelector(source, position, options, callback, cancel);
}

void SynthSection::showDualPopupSelector(Component* source, Point<int> position, int width,
                                         const PopupItems& options, std::function<void(int)> callback) {
  FullInterface* parent = findParentComponentOfClass<FullInterface>();
  if (parent)
    parent->dualPopupSelector(source, position, width, options, callback);
}

void SynthSection::showPopupDisplay(Component* source, const std::string& text,
                                    BubbleComponent::BubblePlacement placement, bool primary) {
  FullInterface* parent = findParentComponentOfClass<FullInterface>();
  if (parent)
    parent->popupDisplay(source, text, placement, primary);
}

void SynthSection::hidePopupDisplay(bool primary) {
  FullInterface* parent = findParentComponentOfClass<FullInterface>();
  if (parent)
    parent->hideDisplay(primary);
}

void SynthSection::paintContainer(Graphics& g) {
  paintBody(g);
  
  g.saveState();
  if (sideways_heading_) {
    int title_width = findValue(Skin::kTitleWidth);
    g.reduceClipRegion(0, 0, title_width, getHeight());
    g.setColour(findColour(Skin::kBodyHeading, true));
    g.fillRoundedRectangle(0, 0, title_width * 2, getHeight(), findValue(Skin::kBodyRounding));
  }
  else {
    g.reduceClipRegion(0, 0, getWidth(), getTitleWidth());
    g.setColour(findColour(Skin::kBodyHeading, true));
    g.fillRoundedRectangle(0, 0, getWidth(), getHeight(), findValue(Skin::kBodyRounding));
  }
  
  g.restoreState();
}

void SynthSection::paintBody(Graphics& g, Rectangle<int> bounds) {
  g.setColour(findColour(Skin::kBody, true));
  g.fillRoundedRectangle(bounds.toFloat(), findValue(Skin::kBodyRounding));
}

void SynthSection::paintBorder(Graphics& g, Rectangle<int> bounds) {
  int body_rounding = findValue(Skin::kBodyRounding);
  g.setColour(findColour(Skin::kBorder, true));
  g.drawRoundedRectangle(bounds.toFloat().reduced(0.5f), body_rounding, 1.0f);
}

void SynthSection::paintBody(Graphics& g) {
  paintBody(g, getLocalBounds());
}

void SynthSection::paintBorder(Graphics& g) {
  paintBorder(g, getLocalBounds());
}

int SynthSection::getComponentShadowWidth() {
  return std::round(size_ratio_ * 2.0f);
}

void SynthSection::paintTabShadow(Graphics& g) {
  paintTabShadow(g, getLocalBounds());
}

void SynthSection::paintTabShadow(Graphics& g, Rectangle<int> bounds) {
  static constexpr float kCornerScale = 0.70710678119f;
  int corner_size = findValue(Skin::kBodyRounding);
  int shadow_size = getComponentShadowWidth();
  int corner_and_shadow = corner_size + shadow_size;

  float corner_shadow_offset = corner_size - corner_and_shadow * kCornerScale;
  float corner_ratio = corner_size * 1.0f / corner_and_shadow;

  Colour shadow_color = findColour(Skin::kShadow, true);
  Colour transparent = shadow_color.withAlpha(0.0f);

  int left = bounds.getX();
  int top = bounds.getY();
  int right = bounds.getRight();
  int bottom = bounds.getBottom();

  g.setGradientFill(ColourGradient(shadow_color, left, 0, transparent, left - shadow_size, 0, false));
  g.fillRect(left - shadow_size, top + corner_size, shadow_size, bottom - top - corner_size * 2);

  g.setGradientFill(ColourGradient(shadow_color, right, 0, transparent, right + shadow_size, 0, false));
  g.fillRect(right, top + corner_size, shadow_size, bottom - top - corner_size * 2);

  g.setGradientFill(ColourGradient(shadow_color, 0, top, transparent, 0, top - shadow_size, false));
  g.fillRect(left + corner_size, top - shadow_size, right - left - corner_size * 2, shadow_size);

  g.setGradientFill(ColourGradient(shadow_color, 0, bottom, transparent, 0, bottom + shadow_size, false));
  g.fillRect(left + corner_size, bottom, right - left - corner_size * 2, shadow_size);

  ColourGradient top_left_corner(shadow_color, left + corner_size, top + corner_size,
                                 transparent, left + corner_shadow_offset, top + corner_shadow_offset, true);
  top_left_corner.addColour(corner_ratio, shadow_color);
  g.setGradientFill(top_left_corner);
  g.fillRect(left - shadow_size, top - shadow_size, corner_and_shadow, corner_and_shadow);

  ColourGradient top_right_corner(shadow_color, right - corner_size, top + corner_size,
                                  transparent, right - corner_shadow_offset, top + corner_shadow_offset, true);
  top_right_corner.addColour(corner_ratio, shadow_color);
  g.setGradientFill(top_right_corner);
  g.fillRect(right - corner_size, top - shadow_size, corner_and_shadow, corner_and_shadow);

  ColourGradient bottom_left_corner(shadow_color, left + corner_size, bottom - corner_size,
                                    transparent, left + corner_shadow_offset, bottom - corner_shadow_offset, true);
  bottom_left_corner.addColour(corner_ratio, shadow_color);
  g.setGradientFill(bottom_left_corner);
  g.fillRect(left - shadow_size, bottom - corner_size, corner_and_shadow, corner_and_shadow);

  ColourGradient bottom_right_corner(shadow_color, right - corner_size, bottom - corner_size,
                                     transparent, right - corner_shadow_offset, bottom - corner_shadow_offset, true);
  bottom_right_corner.addColour(corner_ratio, shadow_color);
  g.setGradientFill(bottom_right_corner);
  g.fillRect(right - corner_size, bottom - corner_size, corner_and_shadow, corner_and_shadow);
}

void SynthSection::setSizeRatio(float ratio) {
  size_ratio_ = ratio;

  for (auto& sub_section : sub_sections_)
    sub_section->setSizeRatio(ratio);
}

void SynthSection::paintKnobShadows(Graphics& g) {
  for (auto& slider : slider_lookup_) {
    if (slider.second->isVisible() && slider.second->getWidth() && slider.second->getHeight())
      slider.second->drawShadow(g);
  }
}

void SynthSection::paintChildrenShadows(Graphics& g) {
  for (auto& sub_section : sub_sections_) {
    if (sub_section->isVisible())
      paintChildShadow(g, sub_section);
  }
}

void SynthSection::paintOpenGlChildrenBackgrounds(Graphics& g) {
  for (auto& open_gl_component : open_gl_components_) {
    if (open_gl_component->isVisible())
      paintOpenGlBackground(g, open_gl_component);
  }
}

void SynthSection::paintChildrenBackgrounds(Graphics& g) {
  for (auto& sub_section : sub_sections_) {
    if (sub_section->isVisible())
      paintChildBackground(g, sub_section);
  }

  paintOpenGlChildrenBackgrounds(g);

  if (preset_selector_) {
    g.saveState();
    Rectangle<int> bounds = getLocalArea(preset_selector_, preset_selector_->getLocalBounds());
    g.reduceClipRegion(bounds);
    g.setOrigin(bounds.getTopLeft());
    preset_selector_->paintBackground(g);
    g.restoreState();
  }
}

void SynthSection::paintChildBackground(Graphics& g, SynthSection* child) {
  g.saveState();
  Rectangle<int> bounds = getLocalArea(child, child->getLocalBounds());
  g.reduceClipRegion(bounds);
  g.setOrigin(bounds.getTopLeft());
  child->paintBackground(g);
  g.restoreState();
}

void SynthSection::paintChildShadow(Graphics& g, SynthSection* child) {
  g.saveState();
  Rectangle<int> bounds = getLocalArea(child, child->getLocalBounds());
  g.setOrigin(bounds.getTopLeft());
  child->paintBackgroundShadow(g);
  child->paintChildrenShadows(g);
  g.restoreState();
}

void SynthSection::paintOpenGlBackground(Graphics &g, OpenGlComponent* open_gl_component) {
  g.saveState();
  Rectangle<int> bounds = getLocalArea(open_gl_component, open_gl_component->getLocalBounds());
  g.reduceClipRegion(bounds);
  g.setOrigin(bounds.getTopLeft());
  open_gl_component->paintBackground(g);
  g.restoreState();
}

void SynthSection::drawTextComponentBackground(Graphics& g, Rectangle<int> bounds, bool extend_to_label) {
  if (bounds.getWidth() <= 0 || bounds.getHeight() <= 0)
    return;

  g.setColour(findColour(Skin::kTextComponentBackground, true));
  int y = bounds.getY();
  int rounding = bounds.getHeight() / 2;

  if (extend_to_label) {
    int label_bottom = bounds.getBottom() + findValue(Skin::kTextComponentLabelOffset);
    rounding = findValue(Skin::kLabelBackgroundRounding);
    g.fillRoundedRectangle(bounds.toFloat(), rounding);

    int extend_y = y + bounds.getHeight() / 2;
    g.fillRect(bounds.getX(), extend_y, bounds.getWidth(), label_bottom - extend_y - rounding);
  }
  else
    g.fillRoundedRectangle(bounds.toFloat(), rounding);
}

void SynthSection::drawTempoDivider(Graphics& g, Component* sync) {
  static constexpr float kLineRatio = 0.5f;

  g.setColour(findColour(Skin::kLightenScreen, true));
  int height = sync->getHeight();
  int line_height = height * kLineRatio;
  int y = sync->getY() + (height - line_height) / 2;
  g.drawRect(sync->getX(), y, 1, line_height);
}

void SynthSection::initOpenGlComponents(OpenGlWrapper& open_gl) {
  for (auto& open_gl_component : open_gl_components_)
    open_gl_component->init(open_gl);

  for (auto& sub_section : sub_sections_)
    sub_section->initOpenGlComponents(open_gl);
}

void SynthSection::renderOpenGlComponents(OpenGlWrapper& open_gl, bool animate) {
  for (auto& sub_section : sub_sections_) {
    if (sub_section->isVisible() && !sub_section->isAlwaysOnTop())
      sub_section->renderOpenGlComponents(open_gl, animate);
  }

  for (auto& open_gl_component : open_gl_components_) {
    if (open_gl_component->isVisible() && !open_gl_component->isAlwaysOnTop()) {
      open_gl_component->render(open_gl, animate);
      VITAL_ASSERT(glGetError() == GL_NO_ERROR);
    }
  }

  for (auto& sub_section : sub_sections_) {
    if (sub_section->isVisible() && sub_section->isAlwaysOnTop())
      sub_section->renderOpenGlComponents(open_gl, animate);
  }

  for (auto& open_gl_component : open_gl_components_) {
    if (open_gl_component->isVisible() && open_gl_component->isAlwaysOnTop()) {
      open_gl_component->render(open_gl, animate);
      VITAL_ASSERT(glGetError() == GL_NO_ERROR);
    }
  }
}

void SynthSection::destroyOpenGlComponents(OpenGlWrapper& open_gl) {
  for (auto& open_gl_component : open_gl_components_)
    open_gl_component->destroy(open_gl);

  for (auto& sub_section : sub_sections_)
    sub_section->destroyOpenGlComponents(open_gl);
}

void SynthSection::sliderValueChanged(Slider* moved_slider) {
  std::string name = moved_slider->getName().toStdString();
  SynthGuiInterface* parent = findParentComponentOfClass<SynthGuiInterface>();
  if (parent)
    parent->getSynth()->valueChangedInternal(name, moved_slider->getValue());
}

void SynthSection::buttonClicked(juce::Button *clicked_button) {
  std::string name = clicked_button->getName().toStdString();
  SynthGuiInterface* parent = findParentComponentOfClass<SynthGuiInterface>();
  if (parent)
    parent->getSynth()->valueChangedInternal(name, clicked_button->getToggleState() ? 1.0 : 0.0);
}

void SynthSection::guiChanged(SynthButton* button) {
  if (button == activator_)
    setActive(activator_->getToggleStateValue().getValue());
}

void SynthSection::setSliderHasHzAlternateDisplay(SynthSlider* slider) {
  vital::ValueDetails hz_details = *slider->getDisplayDetails();
  hz_details.value_scale = vital::ValueDetails::kExponential;
  hz_details.post_offset = 0.0f;
  hz_details.display_units = " Hz";
  hz_details.display_multiply = vital::kMidi0Frequency;
  slider->setAlternateDisplay(Skin::kFrequencyDisplay, 1.0f, hz_details);
  slider->setDisplayExponentialBase(pow(2.0f, 1.0f / 12.0f));
}

void SynthSection::addToggleButton(ToggleButton* button, bool show) {
  button_lookup_[button->getName().toStdString()] = button;
  all_buttons_[button->getName().toStdString()] = button;
  button->addListener(this);
  if (show)
    addAndMakeVisible(button);
}

void SynthSection::addButton(OpenGlToggleButton* button, bool show) {
  addToggleButton(button, show);
  addOpenGlComponent(button->getGlComponent());
}

void SynthSection::addButton(OpenGlShapeButton* button, bool show) {
  addToggleButton(button, show);
  addOpenGlComponent(button->getGlComponent());
}

void SynthSection::addModulationButton(ModulationButton* button, bool show) {
  modulation_buttons_[button->getName().toStdString()] = button;
  all_modulation_buttons_[button->getName().toStdString()] = button;
  if (show)
    addOpenGlComponent(button);
}

void SynthSection::addSlider(SynthSlider* slider, bool show, bool listen) {
  slider_lookup_[slider->getName().toStdString()] = slider;
  all_sliders_[slider->getName().toStdString()] = slider;
  if (listen)
    slider->addListener(this);
  if (show)
    addAndMakeVisible(slider);
  addOpenGlComponent(slider->getImageComponent());
  addOpenGlComponent(slider->getQuadComponent());
  addOpenGlComponent(slider->getTextEditorComponent());
}

void SynthSection::addSubSection(SynthSection* sub_section, bool show) {
  sub_section->setParent(this);

  if (show)
    addAndMakeVisible(sub_section);

  sub_sections_.push_back(sub_section);

  std::map<std::string, SynthSlider*> sub_sliders = sub_section->getAllSliders();
  all_sliders_.insert(sub_sliders.begin(), sub_sliders.end());

  std::map<std::string, ToggleButton*> sub_buttons = sub_section->getAllButtons();
  all_buttons_.insert(sub_buttons.begin(), sub_buttons.end());

  std::map<std::string, ModulationButton*> sub_mod_buttons = sub_section->getAllModulationButtons();
  all_modulation_buttons_.insert(sub_mod_buttons.begin(), sub_mod_buttons.end());
}

void SynthSection::removeSubSection(SynthSection* section) {
  auto location = std::find(sub_sections_.begin(), sub_sections_.end(), section);
  if (location != sub_sections_.end())
    sub_sections_.erase(location);
}

void SynthSection::setScrollWheelEnabled(bool enabled) {
  for (auto& slider : slider_lookup_)
    slider.second->setScrollEnabled(enabled);

  for (auto& sub_section : sub_sections_)
    sub_section->setScrollWheelEnabled(enabled);
}

void SynthSection::addOpenGlComponent(OpenGlComponent* open_gl_component, bool to_beginning) {
  if (open_gl_component == nullptr)
    return;
  
  VITAL_ASSERT(std::find(open_gl_components_.begin(), open_gl_components_.end(),
                         open_gl_component) == open_gl_components_.end());

  open_gl_component->setParent(this);
  if (to_beginning)
    open_gl_components_.insert(open_gl_components_.begin(), open_gl_component);
  else
    open_gl_components_.push_back(open_gl_component);
  addAndMakeVisible(open_gl_component);
}

void SynthSection::setActivator(SynthButton* activator) {
  createOffOverlay();

  activator_ = activator;
  activator->setPowerButton();
  activator_->getGlComponent()->setAlwaysOnTop(true);
  activator->addButtonListener(this);
  setActive(activator_->getToggleStateValue().getValue());
}

void SynthSection::createOffOverlay() {
  if (off_overlay_)
    return;

  off_overlay_ = std::make_unique<OffOverlay>();
  addOpenGlComponent(off_overlay_.get(), true);
  off_overlay_->setVisible(false);
  off_overlay_->setAlwaysOnTop(true);
  off_overlay_->setInterceptsMouseClicks(false, false);
}

void SynthSection::paintJointControlSliderBackground(Graphics& g, int x, int y, int width, int height) {
  float rounding = findValue(Skin::kLabelBackgroundRounding);
  g.setColour(findColour(Skin::kTextComponentBackground, true));
  int widget_margin = findValue(Skin::kWidgetMargin);
  int width1 = width / 2;
  int width1_half = width1 / 2;

  g.fillRoundedRectangle(x, y, width1, height, rounding);
  g.fillRect(x + width1 - width1_half, y, width1_half, height);

  g.fillRoundedRectangle(x + width1, y, width1, height, rounding);
  g.fillRect(x + width1, y, width1_half, height);

  g.setColour(findColour(Skin::kLightenScreen, true));
  g.fillRect(x + width1, y + widget_margin, 1, height - 2 * widget_margin);
}

void SynthSection::paintJointControlBackground(Graphics& g, int x, int y, int width, int height) {
  float rounding = findValue(Skin::kLabelBackgroundRounding);
  g.setColour(findColour(Skin::kLabelBackground, true));
  g.fillRect(x + rounding, y * 1.0f, width - 2.0f * rounding, height / 2.0f);

  int label_height = findValue(Skin::kLabelBackgroundHeight);
  int half_label_height = label_height / 2;
  int side_width = height;
  g.setColour(findColour(Skin::kTextComponentBackground, true));
  g.fillRoundedRectangle(x, y + half_label_height, width, height - half_label_height, rounding);
  g.fillRoundedRectangle(x, y, side_width, height, rounding);
  g.fillRoundedRectangle(x + width - side_width, y, side_width, height, rounding);

  Colour label_color = findColour(Skin::kLabelBackground, true);
  if (label_color.getAlpha() == 0)
    label_color = findColour(Skin::kBody, true);
  g.setColour(label_color);
  int rect_width = std::max(width - 2 * side_width, 0);
  g.fillRect(x + side_width, y, rect_width, half_label_height);
  g.fillRoundedRectangle(x + side_width, y, rect_width, label_height, rounding);
}

void SynthSection::paintJointControl(Graphics& g, int x, int y, int width, int height, const std::string& name) {
  paintJointControlBackground(g, x, y, width, height);

  setLabelFont(g);
  g.setColour(findColour(Skin::kBodyText, true));
  g.drawText(name, x, y, width, findValue(Skin::kLabelBackgroundHeight), Justification::centred, false);
}

void SynthSection::placeJointControls(int x, int y, int width, int height,
                                      SynthSlider* left, SynthSlider* right, Component* widget) {
  int width_control = height;
  left->setBounds(x, y, width_control, height);

  if (widget) {
    int label_height = findValue(Skin::kLabelBackgroundHeight);
    widget->setBounds(x + width_control, y + label_height, width - 2 * width_control, height - label_height);
  }
  right->setBounds(x + width - width_control, y, width_control, height);
}

void SynthSection::placeTempoControls(int x, int y, int width, int height, SynthSlider* tempo, SynthSlider* sync) {
  static constexpr float kMaxSyncWidthRatio = 0.35f;
  int sync_width = std::min(width * kMaxSyncWidthRatio, findValue(Skin::kTextComponentHeight));
  int sync_y = y + (height - sync_width) / 2.0f + findValue(Skin::kTextComponentOffset);
  sync->setBounds(x + width - sync_width, sync_y, sync_width, sync_width);
  tempo->setBounds(x, y, width - sync_width, height);
  tempo->setModulationArea(Rectangle<int>(0, sync_y - y, tempo->getWidth(), sync_width));
}

void SynthSection::placeRotaryOption(Component* option, SynthSlider* rotary) {
  int width = findValue(Skin::kRotaryOptionWidth);
  int offset_x = findValue(Skin::kRotaryOptionXOffset) - width / 2;
  int offset_y = findValue(Skin::kRotaryOptionYOffset) - width / 2;
  Point<int> point = rotary->getBounds().getCentre() + Point<int>(offset_x, offset_y);
  option->setBounds(point.x, point.y, width, width);
}

void SynthSection::placeKnobsInArea(Rectangle<int> area, std::vector<Component*> knobs) {
  int widget_margin = findValue(Skin::kWidgetMargin);
  float component_width = (area.getWidth() - (knobs.size() + 1) * widget_margin) / (1.0f * knobs.size());

  int y = area.getY();
  int height = area.getHeight() - widget_margin;
  float x = area.getX() + widget_margin;
  for (Component* knob : knobs) {
    int left = std::round(x);
    int right = std::round(x + component_width);
    if (knob)
      knob->setBounds(left, y, right - left, height);
    x += component_width + widget_margin;
  }
}

void SynthSection::lockCriticalSection() {
  SynthGuiInterface* parent = findParentComponentOfClass<SynthGuiInterface>();
  if (parent)
    parent->getSynth()->getCriticalSection().enter();
}

void SynthSection::unlockCriticalSection() {
  SynthGuiInterface* parent = findParentComponentOfClass<SynthGuiInterface>();
  if (parent)
    parent->getSynth()->getCriticalSection().exit();
}

float SynthSection::getTitleWidth() {
  return findValue(Skin::kTitleWidth);
}

float SynthSection::getKnobSectionHeight() {
  return findValue(Skin::kKnobSectionHeight);
}

float SynthSection::getSliderWidth() {
  return findValue(Skin::kSliderWidth);
}

float SynthSection::getSliderOverlap() {
  int total_width = getSliderWidth();
  int extra = total_width % 2;
  int slider_width = std::floor(SynthSlider::kLinearWidthPercent * total_width * 0.5f) * 2.0f + extra;
  return (total_width - slider_width) / 2;
}

float SynthSection::getSliderOverlapWithSpace() {
  return getSliderOverlap() - (int)getWidgetMargin();
}

float SynthSection::getTextComponentHeight() {
  return findValue(Skin::kTextComponentHeight);
}

float SynthSection::getStandardKnobSize() {
  return findValue(Skin::kKnobArcSize);
}

float SynthSection::getPadding() {
  return findValue(Skin::kPadding);
}

float SynthSection::getTextSectionYOffset() {
  return (getKnobSectionHeight() - getTextComponentHeight()) / 2.0f;
}

float SynthSection::getModButtonWidth() {
  return findValue(Skin::kModulationButtonWidth);
}

float SynthSection::getModFontSize() {
  return findValue(Skin::kModulationFontSize);
}

float SynthSection::getWidgetMargin() {
  return findValue(Skin::kWidgetMargin);
}

float SynthSection::getWidgetRounding() {
  return findValue(Skin::kWidgetRoundedCorner);
}

Rectangle<int> SynthSection::getPresetBrowserBounds() {
  static constexpr float kXPercent = 0.4f;
  int title_width = getTitleWidth();
  int widget_margin = getWidgetMargin();
  int width = getWidth();
  int x = width * kXPercent;
  if (preset_selector_half_width_)
    x = width * 0.7f + findValue(Skin::kWidgetMargin);
  return Rectangle<int>(x, widget_margin, width - x - widget_margin, title_width - 2 * widget_margin);
}

int SynthSection::getTitleTextRight() {
  if (preset_selector_ == nullptr)
    return getWidth();

  if (preset_selector_half_width_)
    return getWidth() * 0.2f;
  return getPresetBrowserBounds().getX();
}

Rectangle<int> SynthSection::getPowerButtonBounds() {
  int title_width = getTitleWidth();
  return Rectangle<int>(getPowerButtonOffset(), 0, title_width, title_width);
}

Rectangle<int> SynthSection::getTitleBounds() {
  int title_width = getTitleWidth();
  int from = 0;
  if (activator_)
    from = getPowerButtonBounds().getRight() - title_width * kPowerButtonPaddingPercent;

  int to = getTitleTextRight();
  return Rectangle<int>(from, 0, to - from, title_width);
}

float SynthSection::getDisplayScale() const {
  if (getWidth() <= 0)
    return 1.0f;
  
  Component* top_level = getTopLevelComponent();
  Rectangle<int> global_bounds = top_level->getLocalArea(this, getLocalBounds());
  float display_scale = Desktop::getInstance().getDisplays().getDisplayForRect(top_level->getScreenBounds())->scale;
  return display_scale * (1.0f * global_bounds.getWidth()) / getWidth();
}

int SynthSection::getPixelMultiple() const {
  if (parent_)
    return parent_->getPixelMultiple();
  return 1.0f;
}

Font SynthSection::getLabelFont() {
  float height = findValue(Skin::kLabelHeight);
  return Fonts::instance()->proportional_regular().withPointHeight(height);
}

void SynthSection::setLabelFont(Graphics& g) {
  g.setColour(findColour(Skin::kBodyText, true));
  g.setFont(getLabelFont());
}

void SynthSection::drawLabelConnectionForComponents(Graphics& g, Component* left, Component* right) {
  int label_offset = findValue(Skin::kLabelOffset);
  int background_height = findValue(Skin::kLabelBackgroundHeight);
  g.setColour(findColour(Skin::kLabelConnection, true));
  int background_y = left->getBounds().getBottom() - background_height + label_offset;

  int rect_width = right->getBounds().getCentreX() - left->getBounds().getCentreX();
  g.fillRect(left->getBounds().getCentreX(), background_y, rect_width, background_height);
}

void SynthSection::drawLabelBackground(Graphics& g, Rectangle<int> bounds, bool text_component) {
  int background_rounding = findValue(Skin::kLabelBackgroundRounding);
  g.setColour(findColour(Skin::kLabelBackground, true));
  Rectangle<float> label_bounds = getLabelBackgroundBounds(bounds, text_component).toFloat();
  g.fillRoundedRectangle(label_bounds, background_rounding);
  if (text_component && !findColour(Skin::kTextComponentBackground, true).isTransparent())
    g.fillRect(label_bounds.withHeight(label_bounds.getHeight() / 2));
}

void SynthSection::drawLabelBackgroundForComponent(Graphics& g, Component* component) {
  drawLabelBackground(g, component->getBounds());
}

Rectangle<int> SynthSection::getDividedAreaUnbuffered(Rectangle<int> full_area, int num_sections,
                                                      int section, int buffer) {
  float component_width = (full_area.getWidth() - (num_sections + 1) * buffer) / (1.0f * num_sections);
  int x = full_area.getX() + std::round(section * (component_width + buffer) + buffer);
  int right = full_area.getX() + std::round((section + 1.0f) * (component_width + buffer));
  return Rectangle<int>(x, full_area.getY(), right - x, full_area.getHeight());
}

Rectangle<int> SynthSection::getDividedAreaBuffered(Rectangle<int> full_area, int num_sections,
                                                    int section, int buffer) {
  Rectangle<int> area = getDividedAreaUnbuffered(full_area, num_sections, section, buffer);
  return area.expanded(buffer, 0);
}

Rectangle<int> SynthSection::getLabelBackgroundBounds(Rectangle<int> bounds, bool text_component) {
  int background_height = findValue(Skin::kLabelBackgroundHeight);
  int label_offset = text_component ? findValue(Skin::kTextComponentLabelOffset) : findValue(Skin::kLabelOffset);
  int background_y = bounds.getBottom() - background_height + label_offset;
  return Rectangle<int>(bounds.getX(), background_y, bounds.getWidth(), background_height);
}

void SynthSection::drawLabel(Graphics& g, String text, Rectangle<int> component_bounds, bool text_component) {
  if (component_bounds.getWidth() <= 0 || component_bounds.getHeight() <= 0)
    return;

  drawLabelBackground(g, component_bounds, text_component);
  g.setColour(findColour(Skin::kBodyText, true));
  Rectangle<int> background_bounds = getLabelBackgroundBounds(component_bounds, text_component);
  g.drawText(text, component_bounds.getX(), background_bounds.getY(),
                   component_bounds.getWidth(), background_bounds.getHeight(), Justification::centred, false);
}

void SynthSection::drawTextBelowComponent(Graphics& g, String text, Component* component, int space, int padding) {
  int height = findValue(Skin::kLabelBackgroundHeight);
  g.drawText(text, component->getX() - padding, component->getBottom() + space,
             component->getWidth() + 2 * padding, height, Justification::centred, false);
}

void SynthSection::setActive(bool active) {
  if (active_ == active)
    return;

  if (off_overlay_)
    off_overlay_->setVisible(!active);

  active_ = active;
  for (auto& slider : slider_lookup_)
    slider.second->setActive(active);
  for (auto& sub_section : sub_sections_)
    sub_section->setActive(active);

  repaintBackground();
}

void SynthSection::animate(bool animate) {
  for (auto& sub_section : sub_sections_)
    sub_section->animate(animate);
}

void SynthSection::setAllValues(vital::control_map& controls) {
  for (auto& slider : all_sliders_) {
    if (controls.count(slider.first)) {
      slider.second->setValue(controls[slider.first]->value(), NotificationType::dontSendNotification);
      slider.second->valueChanged();
    }
  }

  for (auto& button : all_buttons_) {
    if (controls.count(button.first)) {
      bool toggle = controls[button.first]->value();
      button.second->setToggleState(toggle, NotificationType::sendNotificationSync);
    }
  }

  for (auto& sub_section : sub_sections_)
    sub_section->setAllValues(controls);
}

void SynthSection::setValue(const std::string& name, vital::mono_float value, NotificationType notification) {
  if (all_sliders_.count(name)) {
    all_sliders_[name]->setValue(value, notification);
    if (notification == dontSendNotification)
      all_sliders_[name]->redoImage();
    all_sliders_[name]->notifyGuis();
  }
  if (all_buttons_.count(name))
    all_buttons_[name]->setToggleState(value, notification);
}