--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DPF-Prymula-audioplugins/dpf/dgl/ImageBaseWidgets.hpp	Mon Oct 16 21:53:34 2023 +0200
@@ -0,0 +1,258 @@
+/*
+ * DISTRHO Plugin Framework (DPF)
+ * Copyright (C) 2012-2021 Filipe Coelho <falktx@falktx.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any purpose with
+ * or without fee is hereby granted, provided that the above copyright notice and this
+ * permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
+ * TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef DGL_IMAGE_BASE_WIDGETS_HPP_INCLUDED
+#define DGL_IMAGE_BASE_WIDGETS_HPP_INCLUDED
+
+#include "EventHandlers.hpp"
+#include "StandaloneWindow.hpp"
+#include "SubWidget.hpp"
+
+START_NAMESPACE_DGL
+
+// --------------------------------------------------------------------------------------------------------------------
+
+/**
+   DGL Image About Window class.
+
+   This is a Window attached (transient) to another Window that simply shows an Image as its content.
+   It is typically used for "about this project" style pop-up Windows.
+
+   Pressing 'Esc' or clicking anywhere on the window will automatically close it.
+
+   @see CairoImageAboutWindow, OpenGLImageAboutWindow, Window::runAsModal(bool)
+ */
+template <class ImageType>
+class ImageBaseAboutWindow : public StandaloneWindow
+{
+public:
+   /**
+      Constructor taking an existing Window as the parent transient window and an optional image.
+      If @a image is valid, the about window size will match the image size.
+    */
+    explicit ImageBaseAboutWindow(Window& transientParentWindow, const ImageType& image = ImageType());
+
+   /**
+      Constructor taking a top-level-widget's Window as the parent transient window and an optional image.
+      If @a image is valid, the about window size will match the image size.
+    */
+    explicit ImageBaseAboutWindow(TopLevelWidget* topLevelWidget, const ImageType& image = ImageType());
+
+   /**
+      Set a new image to use as background for this window.
+      Window size will adjust to match the image size.
+    */
+    void setImage(const ImageType& image);
+
+protected:
+    void onDisplay() override;
+    bool onKeyboard(const KeyboardEvent&) override;
+    bool onMouse(const MouseEvent&) override;
+
+private:
+    ImageType img;
+
+    DISTRHO_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(ImageBaseAboutWindow)
+};
+
+// --------------------------------------------------------------------------------------------------------------------
+
+/**
+   DGL Image Button class.
+
+   This is a typical button, where the drawing comes from a pregenerated set of images.
+   The button can be under "normal", "hover" and "down" states, with one separate image possible for each.
+
+   The event logic for this button comes from the ButtonEventHandler class.
+
+   @see CairoImageButton, OpenGLImageButton
+ */
+template <class ImageType>
+class ImageBaseButton : public SubWidget,
+                        public ButtonEventHandler
+{
+public:
+    class Callback
+    {
+    public:
+        virtual ~Callback() {}
+        virtual void imageButtonClicked(ImageBaseButton* imageButton, int button) = 0;
+    };
+
+    explicit ImageBaseButton(Widget* parentWidget, const ImageType& image);
+    explicit ImageBaseButton(Widget* parentWidget, const ImageType& imageNormal, const ImageType& imageDown);
+    explicit ImageBaseButton(Widget* parentWidget, const ImageType& imageNormal, const ImageType& imageHover, const ImageType& imageDown);
+
+    ~ImageBaseButton() override;
+
+    void setCallback(Callback* callback) noexcept;
+
+protected:
+     void onDisplay() override;
+     bool onMouse(const MouseEvent&) override;
+     bool onMotion(const MotionEvent&) override;
+
+private:
+    struct PrivateData;
+    PrivateData* const pData;
+
+    DISTRHO_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(ImageBaseButton)
+};
+
+// --------------------------------------------------------------------------------------------------------------------
+
+/**
+   DGL Image Knob class.
+
+   This is a typical knob/dial, where the drawing comes from a pregenerated image "filmstrip".
+   The knob's "filmstrip" image can be either horizontal or vertical,
+   with the number of steps automatically based on the largest value (ie, horizontal if width>height, vertical if height>width).
+   There are no different images for "hover" or "down" states.
+
+   The event logic for this knob comes from the KnobEventHandler class.
+
+   @see CairoImageKnob, OpenGLImageKnob
+ */
+template <class ImageType>
+class ImageBaseKnob : public SubWidget,
+                      public KnobEventHandler
+{
+public:
+    class Callback
+    {
+    public:
+        virtual ~Callback() {}
+        virtual void imageKnobDragStarted(ImageBaseKnob* imageKnob) = 0;
+        virtual void imageKnobDragFinished(ImageBaseKnob* imageKnob) = 0;
+        virtual void imageKnobValueChanged(ImageBaseKnob* imageKnob, float value) = 0;
+    };
+
+    explicit ImageBaseKnob(Widget* parentWidget, const ImageType& image, Orientation orientation = Vertical) noexcept;
+    explicit ImageBaseKnob(const ImageBaseKnob& imageKnob);
+    ImageBaseKnob& operator=(const ImageBaseKnob& imageKnob);
+    ~ImageBaseKnob() override;
+
+    void setCallback(Callback* callback) noexcept;
+    void setImageLayerCount(uint count) noexcept;
+    void setRotationAngle(int angle);
+    bool setValue(float value, bool sendCallback = false) noexcept override;
+
+protected:
+    void onDisplay() override;
+    bool onMouse(const MouseEvent&) override;
+    bool onMotion(const MotionEvent&) override;
+    bool onScroll(const ScrollEvent&) override;
+
+private:
+    struct PrivateData;
+    PrivateData* const pData;
+
+    DISTRHO_LEAK_DETECTOR(ImageBaseKnob)
+};
+
+// --------------------------------------------------------------------------------------------------------------------
+
+// note set range and step before setting the value
+
+template <class ImageType>
+class ImageBaseSlider : public SubWidget
+{
+public:
+    class Callback
+    {
+    public:
+        virtual ~Callback() {}
+        virtual void imageSliderDragStarted(ImageBaseSlider* imageSlider) = 0;
+        virtual void imageSliderDragFinished(ImageBaseSlider* imageSlider) = 0;
+        virtual void imageSliderValueChanged(ImageBaseSlider* imageSlider, float value) = 0;
+    };
+
+    explicit ImageBaseSlider(Widget* parentWidget, const ImageType& image) noexcept;
+    ~ImageBaseSlider() override;
+
+    float getValue() const noexcept;
+    void setValue(float value, bool sendCallback = false) noexcept;
+    void setDefault(float def) noexcept;
+
+    void setStartPos(const Point<int>& startPos) noexcept;
+    void setStartPos(int x, int y) noexcept;
+    void setEndPos(const Point<int>& endPos) noexcept;
+    void setEndPos(int x, int y) noexcept;
+
+    void setCheckable(bool checkable) noexcept;
+    void setInverted(bool inverted) noexcept;
+    void setRange(float min, float max) noexcept;
+    void setStep(float step) noexcept;
+
+    void setCallback(Callback* callback) noexcept;
+
+protected:
+     void onDisplay() override;
+     bool onMouse(const MouseEvent&) override;
+     bool onMotion(const MotionEvent&) override;
+
+private:
+    struct PrivateData;
+    PrivateData* const pData;
+
+    // these should not be used
+    void setAbsoluteX(int) const noexcept {}
+    void setAbsoluteY(int) const noexcept {}
+    void setAbsolutePos(int, int) const noexcept {}
+    void setAbsolutePos(const Point<int>&) const noexcept {}
+
+    DISTRHO_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(ImageBaseSlider)
+};
+
+// --------------------------------------------------------------------------------------------------------------------
+
+template <class ImageType>
+class ImageBaseSwitch : public SubWidget
+{
+public:
+    class Callback
+    {
+    public:
+        virtual ~Callback() {}
+        virtual void imageSwitchClicked(ImageBaseSwitch* imageSwitch, bool down) = 0;
+    };
+
+    explicit ImageBaseSwitch(Widget* parentWidget, const ImageType& imageNormal, const ImageType& imageDown) noexcept;
+    explicit ImageBaseSwitch(const ImageBaseSwitch& imageSwitch) noexcept;
+    ImageBaseSwitch& operator=(const ImageBaseSwitch& imageSwitch) noexcept;
+    ~ImageBaseSwitch() override;
+
+    bool isDown() const noexcept;
+    void setDown(bool down) noexcept;
+
+    void setCallback(Callback* callback) noexcept;
+
+protected:
+     void onDisplay() override;
+     bool onMouse(const MouseEvent&) override;
+
+private:
+    struct PrivateData;
+    PrivateData* const pData;
+
+    DISTRHO_LEAK_DETECTOR(ImageBaseSwitch)
+};
+
+// --------------------------------------------------------------------------------------------------------------------
+
+END_NAMESPACE_DGL
+
+#endif // DGL_IMAGE_BASE_WIDGETS_HPP_INCLUDED