Initial release

engine/vendor/vst3sdk/vstgui4/vstgui/contrib/evbutton_win32.cpp

@@ -0,0 +1,198 @@
+// This file is part of VSTGUI. It is subject to the license terms
+// in the LICENSE file found in the top-level directory of this
+// distribution and at http://github.com/steinbergmedia/vstgui/LICENSE
+
+#include "evbutton.h"
+#include "externalview_hwnd.h"
+#include "vstgui/lib/platform/win32/win32factory.h"
+#include "vstgui/lib/platform/win32/winstring.h"
+
+#include <windowsx.h>
+
+//------------------------------------------------------------------------
+namespace VSTGUI {
+namespace ExternalView {
+
+//------------------------------------------------------------------------
+struct Button::Impl : ExternalHWNDBase,
+					  IControlViewExtension
+{
+	using ExternalHWNDBase::ExternalHWNDBase;
+
+	Type type {};
+	EditCallbacks callbacks {};
+	double value {0.};
+
+	bool setValue (double val) override
+	{
+		value = val;
+		auto state = Button_GetState (child);
+		switch (type)
+		{
+			case Type::Checkbox:
+			case Type::Radio:
+			{
+				Button_SetCheck (child, value > 0.5);
+				break;
+			}
+				{
+					break;
+				}
+			case Type::OnOff:
+			{
+				if (value == 0)
+					state = 0; //~BST_PUSHED;
+				else
+					state = BST_PUSHED;
+				Button_SetState (child, state);
+				break;
+			}
+			case Type::Push:
+			{
+				break;
+			}
+		}
+		return true;
+	}
+
+	bool setEditCallbacks (const EditCallbacks& editCallbacks) override
+	{
+		callbacks = editCallbacks;
+		return true;
+	}
+
+	void onButtonClick (double val)
+	{
+		if (callbacks.beginEdit)
+			callbacks.beginEdit ();
+		if (callbacks.performEdit)
+			callbacks.performEdit (val);
+		if (callbacks.endEdit)
+			callbacks.endEdit ();
+	}
+};
+
+//------------------------------------------------------------------------
+Button::Button (Type type, const UTF8String& inTitle)
+{
+	DWORD addStyle = 0;
+	switch (type)
+	{
+		case Type::Checkbox:
+			addStyle = BS_AUTOCHECKBOX;
+			break;
+		case Type::Radio:
+			addStyle = BS_RADIOBUTTON;
+			break;
+		case Type::OnOff:
+			addStyle = BS_PUSHBUTTON;
+			break;
+		case Type::Push:
+			addStyle = BS_PUSHBUTTON;
+			break;
+	}
+	auto winString = dynamic_cast<WinString*> (inTitle.getPlatformString ());
+	auto hInstance = getPlatformFactory ().asWin32Factory ()->getInstance ();
+	impl = std::make_unique<Impl> (hInstance);
+	impl->type = type;
+	impl->child = CreateWindowExW (WS_EX_COMPOSITED, TEXT ("BUTTON"),
+								   winString ? winString->getWideString () : nullptr,
+								   WS_CHILD | WS_VISIBLE | BS_TEXT | addStyle, 0, 0, 80, 20,
+								   impl->container.getHWND (), NULL, hInstance, NULL);
+	impl->container.setWindowProc (
+		[this] (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) -> LRESULT {
+			switch (message)
+			{
+				case WM_COMMAND:
+				{
+					if (HIWORD (wParam) == BN_CLICKED)
+					{
+						switch (impl->type)
+						{
+							case Type::Checkbox:
+							{
+								impl->onButtonClick (impl->value == 0. ? 1 : 0.);
+								break;
+							}
+							case Type::Radio:
+							{
+								impl->onButtonClick (impl->value == 0. ? 1 : 0.);
+								break;
+							}
+							case Type::OnOff:
+							{
+								impl->onButtonClick (impl->value == 0. ? 1 : 0.);
+								break;
+							}
+							case Type::Push:
+							{
+								impl->onButtonClick (1.);
+								impl->onButtonClick (0.);
+								break;
+							}
+						}
+						return 0;
+					}
+					break;
+				}
+				case WM_ERASEBKGND:
+					return 0;
+			}
+			return DefWindowProc (hwnd, message, wParam, lParam);
+		});
+}
+
+//------------------------------------------------------------------------
+Button::~Button () noexcept = default;
+
+//------------------------------------------------------------------------
+bool Button::platformViewTypeSupported (PlatformViewType type)
+{
+	return impl->platformViewTypeSupported (type);
+}
+
+//------------------------------------------------------------------------
+bool Button::attach (void* parent, PlatformViewType parentViewType)
+{
+	return impl->attach (parent, parentViewType);
+}
+
+//------------------------------------------------------------------------
+bool Button::remove () { return impl->remove (); }
+
+//------------------------------------------------------------------------
+void Button::setViewSize (IntRect frame, IntRect visible) { impl->setViewSize (frame, visible); }
+
+//------------------------------------------------------------------------
+void Button::setContentScaleFactor (double scaleFactor)
+{
+	impl->setContentScaleFactor (scaleFactor);
+}
+
+//------------------------------------------------------------------------
+void Button::setMouseEnabled (bool state) { impl->setMouseEnabled (state); }
+
+//------------------------------------------------------------------------
+void Button::takeFocus () { impl->takeFocus (); }
+
+//------------------------------------------------------------------------
+void Button::looseFocus () { impl->looseFocus (); }
+
+//------------------------------------------------------------------------
+void Button::setTookFocusCallback (const TookFocusCallback& callback)
+{
+	impl->setTookFocusCallback (callback);
+}
+
+//------------------------------------------------------------------------
+bool Button::setValue (double value) { return impl->setValue (value); }
+
+//------------------------------------------------------------------------
+bool Button::setEditCallbacks (const EditCallbacks& callbacks)
+{
+	return impl->setEditCallbacks (callbacks);
+}
+
+//------------------------------------------------------------------------
+} // ExternalView
+} // VSTGUI