Augustin Cavalier
c6f736315a
We can't rely on it not changing between calls, especially as MaxUpdateTextWidth() changes the value and re-gets it, and that's called at the end of this method always. So we need to keep our own copy rather than using the one that's owned by the subclass. Fixes a use-after-free uncovered by the guarded heap in VolumeSlider, reported in #19493.
233 lines
6.3 KiB
C++
233 lines
6.3 KiB
C++
/*
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* Copyright 2001-2016 Haiku, Inc. All rights reserved.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _SLIDER_H
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#define _SLIDER_H
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#include <Control.h>
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enum hash_mark_location {
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B_HASH_MARKS_NONE = 0,
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B_HASH_MARKS_TOP = 1,
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B_HASH_MARKS_LEFT = 1,
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B_HASH_MARKS_BOTTOM = 2,
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B_HASH_MARKS_RIGHT = 2,
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B_HASH_MARKS_BOTH = 3
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};
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enum thumb_style {
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B_BLOCK_THUMB,
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B_TRIANGLE_THUMB
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};
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class BSlider : public BControl {
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public:
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BSlider(BRect frame, const char* name,
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const char* label, BMessage* message,
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int32 minValue, int32 maxValue,
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thumb_style thumbType = B_BLOCK_THUMB,
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uint32 resizingMode = B_FOLLOW_LEFT_TOP,
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uint32 flags = B_NAVIGABLE | B_WILL_DRAW
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| B_FRAME_EVENTS);
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BSlider(BRect frame, const char* name,
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const char* label, BMessage* message,
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int32 minValue, int32 maxValue,
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orientation posture,
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thumb_style thumbType = B_BLOCK_THUMB,
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uint32 resizingMode = B_FOLLOW_LEFT_TOP,
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uint32 flags = B_NAVIGABLE | B_WILL_DRAW
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| B_FRAME_EVENTS);
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BSlider(const char* name, const char* label,
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BMessage* message, int32 minValue,
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int32 maxValue, orientation posture,
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thumb_style thumbType = B_BLOCK_THUMB,
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uint32 flags = B_NAVIGABLE | B_WILL_DRAW
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| B_FRAME_EVENTS);
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BSlider(BMessage* archive);
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virtual ~BSlider();
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static BArchivable* Instantiate(BMessage* archive);
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virtual status_t Archive(BMessage* archive,
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bool deep = true) const;
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virtual status_t Perform(perform_code code, void* data);
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virtual void WindowActivated(bool state);
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virtual void AttachedToWindow();
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virtual void AllAttached();
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virtual void AllDetached();
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virtual void DetachedFromWindow();
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virtual void MessageReceived(BMessage* message);
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virtual void FrameMoved(BPoint newPosition);
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virtual void FrameResized(float width, float height);
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virtual void KeyDown(const char* bytes, int32 numBytes);
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virtual void KeyUp(const char* bytes, int32 numBytes);
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virtual void MouseDown(BPoint point);
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virtual void MouseUp(BPoint point);
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virtual void MouseMoved(BPoint point, uint32 transit,
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const BMessage* dragMessage);
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virtual void Pulse();
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virtual void SetLabel(const char* label);
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virtual void SetLimitLabels(const char* minLabel,
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const char* maxLabel);
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const char* MinLimitLabel() const;
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const char* MaxLimitLabel() const;
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virtual void SetValue(int32 value);
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virtual int32 ValueForPoint(BPoint point) const;
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virtual void SetPosition(float);
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float Position() const;
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virtual void SetEnabled(bool on);
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void GetLimits(int32* minimum, int32* maximum) const;
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virtual void Draw(BRect updateRect);
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virtual void DrawSlider();
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virtual void DrawBar();
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virtual void DrawHashMarks();
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virtual void DrawThumb();
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virtual void DrawFocusMark();
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virtual void DrawText();
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virtual const char* UpdateText() const;
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void UpdateTextChanged();
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virtual BRect BarFrame() const;
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virtual BRect HashMarksFrame() const;
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virtual BRect ThumbFrame() const;
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virtual void SetFlags(uint32 flags);
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virtual void SetResizingMode(uint32 mode);
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virtual void GetPreferredSize(float* _width,
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float* _height);
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virtual void ResizeToPreferred();
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virtual status_t Invoke(BMessage* message = NULL);
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virtual BHandler* ResolveSpecifier(BMessage* message,
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int32 index, BMessage* specifier,
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int32 form, const char* property);
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virtual status_t GetSupportedSuites(BMessage* data);
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virtual void SetModificationMessage(BMessage* message);
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BMessage* ModificationMessage() const;
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virtual void SetSnoozeAmount(int32 microSeconds);
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int32 SnoozeAmount() const;
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virtual void SetKeyIncrementValue(int32 value);
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int32 KeyIncrementValue() const;
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virtual void SetHashMarkCount(int32 count);
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int32 HashMarkCount() const;
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virtual void SetHashMarks(hash_mark_location where);
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hash_mark_location HashMarks() const;
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virtual void SetStyle(thumb_style style);
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thumb_style Style() const;
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virtual void SetBarColor(rgb_color color);
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rgb_color BarColor() const;
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virtual void UseFillColor(bool useFill,
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const rgb_color* color = NULL);
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bool FillColor(rgb_color* color) const;
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BView* OffscreenView() const;
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orientation Orientation() const;
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virtual void SetOrientation(orientation);
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float BarThickness() const;
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virtual void SetBarThickness(float thickness);
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virtual void SetFont(const BFont* font,
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uint32 properties = B_FONT_ALL);
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virtual void SetLimits(int32 minimum, int32 maximum);
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virtual float MaxUpdateTextWidth();
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virtual BSize MinSize();
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virtual BSize MaxSize();
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virtual BSize PreferredSize();
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virtual status_t SetIcon(const BBitmap* icon, uint32 flags = 0);
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protected:
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virtual void LayoutInvalidated(bool descendants);
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private:
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void _DrawBlockThumb();
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void _DrawTriangleThumb();
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BPoint _Location() const;
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void _SetLocationForValue(int32 value);
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float _MinPosition() const;
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float _MaxPosition() const;
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bool _ConstrainPoint(BPoint& point,
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BPoint compare) const;
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BSize _ValidateMinSize();
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void _InitBarColor();
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void _InitObject();
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private:
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// FBC padding and forbidden methods
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virtual void _ReservedSlider6();
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virtual void _ReservedSlider7();
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virtual void _ReservedSlider8();
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virtual void _ReservedSlider9();
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virtual void _ReservedSlider10();
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virtual void _ReservedSlider11();
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virtual void _ReservedSlider12();
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BSlider& operator=(const BSlider& other);
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private:
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BMessage* fModificationMessage;
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int32 fSnoozeAmount;
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rgb_color fBarColor;
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rgb_color fFillColor;
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bool fUseFillColor;
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char* fMinLimitLabel;
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char* fMaxLimitLabel;
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char* fUpdateText;
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int32 fMinValue;
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int32 fMaxValue;
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int32 fKeyIncrementValue;
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int32 fHashMarkCount;
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hash_mark_location fHashMarks;
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BBitmap* fOffScreenBits;
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BView* fOffScreenView;
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thumb_style fStyle;
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BPoint fLocation;
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BPoint fInitialLocation;
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orientation fOrientation;
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float fBarThickness;
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BSize fMinSize;
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float fMaxUpdateTextWidth;
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uint32 _reserved[4];
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};
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#endif // _SLIDER_H
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