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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_SVX_DIALCONTROL_HXX
+#define INCLUDED_SVX_DIALCONTROL_HXX
+
+#include <memory>
+#include <vcl/customweld.hxx>
+#include <vcl/virdev.hxx>
+#include <svx/svxdllapi.h>
+
+class Edit;
+
+namespace svx {
+
+
+class SAL_WARN_UNUSED DialControlBmp final : public VirtualDevice
+{
+public:
+ explicit DialControlBmp(OutputDevice& rReference);
+
+ void InitBitmap(const vcl::Font& rFont);
+ void SetSize(const Size& rSize);
+ void CopyBackground( const DialControlBmp& rSrc );
+ void DrawBackground( const Size& rSize, bool bEnabled );
+ void DrawBackground();
+ void DrawElements( const OUString& rText, Degree100 nAngle );
+ Color GetBackgroundColor() const override;
+
+private:
+ const Color& GetTextColor() const;
+ const Color& GetScaleLineColor() const;
+ const Color& GetButtonLineColor() const;
+ const Color& GetButtonFillColor( bool bMain ) const;
+
+ void Init();
+
+ tools::Rectangle maRect;
+ bool mbEnabled;
+ OutputDevice& mrParent;
+ tools::Long mnCenterX;
+ tools::Long mnCenterY;
+};
+
+/** This control allows to input a rotation angle, visualized by a dial.
+
+ Usage: A single click sets a rotation angle rounded to steps of 15 degrees.
+ Dragging with the left mouse button sets an exact rotation angle. Pressing
+ the ESCAPE key during mouse drag cancels the operation and restores the old
+ state of the control.
+
+ It is possible to link a numeric field to this control using the function
+ SetLinkedField(). The DialControl will take full control of this numeric
+ field:
+ - Sets the rotation angle to the numeric field in mouse operations.
+ - Shows the value entered/modified in the numeric field.
+ - Enables/disables/shows/hides the field according to own state changes.
+ */
+class SAL_WARN_UNUSED SVX_DLLPUBLIC DialControl final : public weld::CustomWidgetController
+{
+public:
+ virtual void SetDrawingArea(weld::DrawingArea* pDrawingArea) override;
+
+ virtual void Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect) override;
+
+ virtual void StyleUpdated() override;
+
+ virtual bool MouseButtonDown( const MouseEvent& rMEvt ) override;
+ virtual bool MouseMove( const MouseEvent& rMEvt ) override;
+ virtual bool MouseButtonUp( const MouseEvent& rMEvt ) override;
+ virtual bool KeyInput(const KeyEvent& rKEvt) override;
+ virtual void LoseFocus() override;
+
+ virtual void Resize() override;
+
+ /** Returns the current rotation angle in 1/100 degrees. */
+ Degree100 GetRotation() const;
+ /** Sets the rotation to the passed value (in 1/100 degrees). */
+ void SetRotation( Degree100 nAngle );
+ /** Returns true, if the control is not in "don't care" state. */
+ bool HasRotation() const;
+ /** Sets the control to "don't care" state. */
+ void SetNoRotation();
+
+ /** Links the passed numeric edit field to the control (bi-directional).
+ * nDecimalPlaces:
+ * field value is unsign given decimal places
+ * default is 0 which means field values are in degrees,
+ * 2 means 100th of degree
+ */
+ void SetLinkedField(weld::MetricSpinButton* pField, sal_Int32 nDecimalPlaces = 0);
+
+ /** Save value for later comparison */
+ void SaveValue();
+
+ /** Compare value with the saved value */
+ bool IsValueModified() const;
+
+ const OUString& GetText() const { return mpImpl->maText; }
+ void SetText(const OUString& rText) { mpImpl->maText = rText; }
+
+ void SetModifyHdl( const Link<DialControl&,void>& rLink );
+
+ void Init( const Size& rWinSize );
+
+ void set_visible(bool bVisible)
+ {
+ if (bVisible)
+ Show();
+ else
+ Hide();
+ }
+private:
+ struct SAL_DLLPRIVATE DialControl_Impl
+ {
+ ScopedVclPtr<DialControlBmp> mxBmpEnabled;
+ ScopedVclPtr<DialControlBmp> mxBmpDisabled;
+ ScopedVclPtr<DialControlBmp> mxBmpBuffered;
+ Link<DialControl&,void> maModifyHdl;
+ OUString maText;
+ weld::MetricSpinButton* mpLinkField;
+ sal_Int32 mnLinkedFieldValueMultiplyer;
+ Size maWinSize;
+ vcl::Font maWinFont;
+ Degree100 mnAngle;
+ Degree100 mnInitialAngle;
+ Degree100 mnOldAngle;
+ tools::Long mnCenterX;
+ tools::Long mnCenterY;
+ bool mbNoRot;
+
+ explicit DialControl_Impl(OutputDevice& rReference);
+ void Init( const Size& rWinSize, const vcl::Font& rWinFont );
+ void SetSize( const Size& rWinSize );
+ };
+ std::unique_ptr< DialControl_Impl > mpImpl;
+
+ void HandleMouseEvent( const Point& rPos, bool bInitial );
+ void HandleEscapeEvent();
+
+ void SetRotation( Degree100 nAngle, bool bBroadcast );
+
+ void Init( const Size& rWinSize, const vcl::Font& rWinFont );
+
+ void InvalidateControl();
+
+ DECL_DLLPRIVATE_LINK(LinkedFieldModifyHdl, weld::MetricSpinButton&, void);
+};
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */