Qt: Implement post-processing shader configuration window

Source/Core/DolphinQt2/Config/Graphics/PostProcessingConfigWindow.h

@@ -0,0 +1,78 @@
+// Copyright 2018 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+#include <QDialog>
+
+#include "Common/CommonTypes.h"
+#include "VideoCommon/PostProcessing.h"
+
+class EnhancementsWidget;
+class QCheckBox;
+class QDialogButtonBox;
+class QGridLayout;
+class QLineEdit;
+class QSlider;
+class QTabWidget;
+class QWidget;
+
+class PostProcessingConfigWindow final : public QDialog
+{
+  Q_OBJECT
+public:
+  explicit PostProcessingConfigWindow(EnhancementsWidget* parent, const std::string& shader);
+  ~PostProcessingConfigWindow();
+
+private:
+  class ConfigGroup final
+  {
+  public:
+    explicit ConfigGroup(
+        const PostProcessingShaderConfiguration::ConfigurationOption* config_option);
+
+    const std::string& GetGUIName() const noexcept;
+    const std::string& GetParent() const noexcept;
+    const std::string& GetOptionName() const noexcept;
+    void AddSubGroup(std::unique_ptr<ConfigGroup>&& subgroup);
+    bool HasSubGroups() const noexcept;
+    const std::vector<std::unique_ptr<ConfigGroup>>& GetSubGroups() const noexcept;
+    u32 AddWidgets(PostProcessingConfigWindow* parent, QGridLayout* grid, u32 row);
+    void EnableSuboptions(bool state);
+    int GetSliderValue(size_t index) const;
+    void SetSliderText(size_t index, const QString& text);
+
+  private:
+    u32 AddBool(PostProcessingConfigWindow* parent, QGridLayout* grid, u32 row);
+    u32 AddInteger(PostProcessingConfigWindow* parent, QGridLayout* grid, u32 row);
+    u32 AddFloat(PostProcessingConfigWindow* parent, QGridLayout* grid, u32 row);
+
+    QCheckBox* m_checkbox;
+    std::vector<QSlider*> m_sliders;
+    std::vector<QLineEdit*> m_value_boxes;
+
+    const PostProcessingShaderConfiguration::ConfigurationOption* m_config_option;
+    std::vector<std::unique_ptr<ConfigGroup>> m_subgroups;
+  };
+  void Create();
+  void ConnectWidgets();
+  QWidget* CreateDependentTab(const std::unique_ptr<ConfigGroup>& config_group);
+  void PopulateGroups();
+  void UpdateBool(ConfigGroup* config_group, bool state);
+  void UpdateInteger(ConfigGroup* config_group, int value);
+  void UpdateFloat(ConfigGroup* config_group, int value);
+
+  QTabWidget* m_tabs;
+  QDialogButtonBox* m_buttons;
+
+  const std::string& m_shader;
+  PostProcessingShaderConfiguration* m_post_processor;
+  std::unordered_map<std::string, ConfigGroup*> m_config_map;
+  std::vector<std::unique_ptr<ConfigGroup>> m_config_groups;
+};