forked from mirrors/gecko-dev
78 lines
2.8 KiB
C++
78 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsResizerFrame_h___
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#define nsResizerFrame_h___
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#include "mozilla/Attributes.h"
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#include "mozilla/EventForwards.h"
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#include "nsTitleBarFrame.h"
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class nsIBaseWindow;
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class nsResizerFrame final : public nsTitleBarFrame {
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protected:
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typedef mozilla::LayoutDeviceIntPoint LayoutDeviceIntPoint;
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typedef mozilla::LayoutDeviceIntRect LayoutDeviceIntRect;
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struct Direction {
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int8_t mHorizontal;
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int8_t mVertical;
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};
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public:
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NS_DECL_FRAMEARENA_HELPERS(nsResizerFrame)
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friend nsIFrame* NS_NewResizerFrame(nsIPresShell* aPresShell,
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ComputedStyle* aStyle);
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explicit nsResizerFrame(ComputedStyle* aStyle, nsPresContext* aPresContext);
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virtual nsresult HandleEvent(nsPresContext* aPresContext,
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mozilla::WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus) override;
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virtual void MouseClicked(mozilla::WidgetMouseEvent* aEvent) override;
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protected:
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nsIContent* GetContentToResize(nsIPresShell* aPresShell,
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nsIBaseWindow** aWindow);
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Direction GetDirection();
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/**
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* Adjust the window position and size in a direction according to the mouse
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* movement and the resizer direction. The minimum and maximum size is used
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* to constrain the size.
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*
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* @param aPos left or top position
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* @param aSize width or height
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* @param aMinSize minimum width or height
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* @param aMacSize maximum width or height
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* @param aMovement the amount the mouse was moved
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* @param aResizerDirection resizer direction returned by GetDirection
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*/
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static void AdjustDimensions(int32_t* aPos, int32_t* aSize, int32_t aMinSize,
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int32_t aMaxSize, int32_t aMovement,
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int8_t aResizerDirection);
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struct SizeInfo {
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nsString width, height;
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};
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static void SizeInfoDtorFunc(void* aObject, nsAtom* aPropertyName,
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void* aPropertyValue, void* aData);
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static void ResizeContent(nsIContent* aContent, const Direction& aDirection,
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const SizeInfo& aSizeInfo,
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SizeInfo* aOriginalSizeInfo);
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static void MaybePersistOriginalSize(nsIContent* aContent,
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const SizeInfo& aSizeInfo);
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static void RestoreOriginalSize(nsIContent* aContent);
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protected:
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LayoutDeviceIntRect mMouseDownRect;
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LayoutDeviceIntPoint mMouseDownPoint;
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}; // class nsResizerFrame
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#endif /* nsResizerFrame_h___ */
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