xref: /haiku/src/kits/tracker/TitleView.h (revision 4f2fd49bdc6078128b1391191e4edac647044c3d)
1 /*
2 Open Tracker License
3 
4 Terms and Conditions
5 
6 Copyright (c) 1991-2000, Be Incorporated. All rights reserved.
7 
8 Permission is hereby granted, free of charge, to any person obtaining a copy of
9 this software and associated documentation files (the "Software"), to deal in
10 the Software without restriction, including without limitation the rights to
11 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
12 of the Software, and to permit persons to whom the Software is furnished to do
13 so, subject to the following conditions:
14 
15 The above copyright notice and this permission notice applies to all licensees
16 and shall be included in all copies or substantial portions of the Software.
17 
18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF TITLE, MERCHANTABILITY,
20 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 BE INCORPORATED BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF, OR IN CONNECTION
23 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 
25 Except as contained in this notice, the name of Be Incorporated shall not be
26 used in advertising or otherwise to promote the sale, use or other dealings in
27 this Software without prior written authorization from Be Incorporated.
28 
29 Tracker(TM), Be(R), BeOS(R), and BeIA(TM) are trademarks or registered trademarks
30 of Be Incorporated in the United States and other countries. Other brand product
31 names are registered trademarks or trademarks of their respective holders.
32 All rights reserved.
33 */
34 
35 #ifndef	_TITLE_VIEW_H
36 #define _TITLE_VIEW_H
37 
38 #include <Cursor.h>
39 #include <DataIO.h>
40 #include <View.h>
41 
42 #include "ObjectList.h"
43 
44 namespace BPrivate {
45 
46 class BPoseView;
47 class BColumn;
48 class BColumnTitle;
49 class ColumnTrackState;
50 class OffscreenBitmap;
51 
52 const int32 kTitleViewHeight = 16;
53 const int32 kEdgeSize = 6;
54 const int32 kTitleColumnLeftExtraMargin = 10;
55 const int32 kTitleColumnRightExtraMargin = 5;
56 const int32 kTitleColumnExtraMargin = kTitleColumnLeftExtraMargin
57 	+ kTitleColumnRightExtraMargin;
58 const int32 kMinColumnWidth = 20;
59 const int32 kRemoveTitleMargin = 10;
60 const int32 kColumnStart = 40;
61 
62 
63 class BTitleView : public BView {
64 public:
65 	BTitleView(BRect, BPoseView *);
66 	virtual ~BTitleView();
67 
68 	virtual	void MouseDown(BPoint where);
69 	virtual	void MouseUp(BPoint where);
70 	virtual	void Draw(BRect updateRect);
71 
72 	void Draw(BRect, bool useOffscreen = false,
73 		bool updateOnly = true,
74 		const BColumnTitle *pressedColumn = 0,
75 		void (*trackRectBlitter)(BView *, BRect) = 0,
76 		BRect passThru = BRect(0, 0, 0, 0));
77 
78 	void AddTitle(BColumn *, const BColumn *after = 0);
79 	void RemoveTitle(BColumn *);
80 	void Reset();
81 
82 	BPoseView *PoseView() const;
83 
84 protected:
85 	void MouseMoved(BPoint, uint32, const BMessage *);
86 
87 private:
88 	BColumnTitle *FindColumnTitle(BPoint) const;
89 	BColumnTitle *InColumnResizeArea(BPoint) const;
90 	BColumnTitle *FindColumnTitle(const BColumn *) const;
91 
92 	BPoseView *fPoseView;
93 	BObjectList<BColumnTitle> fTitleList;
94 	BCursor fHorizontalResizeCursor;
95 
96 	BColumnTitle *fPreviouslyClickedColumnTitle;
97 	bigtime_t fPreviousLeftClickTime;
98 	ColumnTrackState* fTrackingState;
99 
100 	static OffscreenBitmap *sOffscreen;
101 
102 	typedef BView _inherited;
103 
104 	friend class ColumnTrackState;
105 	friend class ColumnDragState;
106 };
107 
108 class BColumnTitle {
109 public:
110 	BColumnTitle(BTitleView *, BColumn *);
111 	virtual ~BColumnTitle() {}
112 
113 	virtual	void Draw(BView *, bool pressed = false);
114 
115 
116 	BColumn *Column() const;
117 	BRect Bounds() const;
118 
119 	bool InColumnResizeArea(BPoint) const;
120 
121 private:
122 	BColumn *fColumn;
123 	BTitleView *fParent;
124 
125 	friend class ColumnResizeState;
126 };
127 
128 // Utility classes to handle dragging state
129 class ColumnTrackState {
130 public:
131 	ColumnTrackState(BTitleView *titleView, BColumnTitle *columnTitle,
132 		BPoint where, bigtime_t pastClickTime);
133 	virtual ~ColumnTrackState() {}
134 
135 	void MouseMoved(BPoint where, uint32 buttons);
136 	void MouseUp(BPoint where);
137 
138 protected:
139 	virtual void Moved(BPoint where, uint32 buttons) = 0;
140 	virtual void Clicked(BPoint where) = 0;
141 	virtual void Done(BPoint where) = 0;
142 	virtual bool ValueChanged(BPoint where) = 0;
143 
144 	BTitleView *fTitleView;
145 	BColumnTitle *fTitle;
146 	BPoint fFirstClickPoint;
147 	bigtime_t fPastClickTime;
148 	bool fHasMoved;
149 };
150 
151 class ColumnResizeState : public ColumnTrackState {
152 public:
153 	ColumnResizeState(BTitleView* titleView, BColumnTitle* columnTitle,
154 		BPoint where, bigtime_t pastClickTime);
155 
156 protected:
157 	virtual void Moved(BPoint where, uint32 buttons);
158 	virtual void Done(BPoint where);
159 	virtual void Clicked(BPoint where);
160 	virtual bool ValueChanged(BPoint);
161 
162 	void DrawLine();
163 	void UndrawLine();
164 
165 private:
166 	float fLastLineDrawPos;
167 	float fInitialTrackOffset;
168 
169 	typedef ColumnTrackState _inherited;
170 };
171 
172 class ColumnDragState : public ColumnTrackState {
173 public:
174 	ColumnDragState(BTitleView* titleView, BColumnTitle* columnTitle,
175 		BPoint where, bigtime_t pastClickTime);
176 
177 protected:
178 	virtual void Moved(BPoint where, uint32 buttons);
179 	virtual void Done(BPoint where);
180 	virtual void Clicked(BPoint where);
181 	virtual bool ValueChanged(BPoint);
182 
183 	void DrawOutline(float);
184 	void UndrawOutline();
185 	void DrawPressNoOutline();
186 
187 private:
188 	float fInitialMouseTrackOffset;
189 	bool fTrackingRemovedColumn;
190 	BMallocIO fColumnArchive;
191 
192 	typedef ColumnTrackState _inherited;
193 };
194 
195 inline BColumn *
196 BColumnTitle::Column() const
197 {
198 	return fColumn;
199 }
200 
201 inline BPoseView *
202 BTitleView::PoseView() const
203 {
204 	return fPoseView;
205 }
206 
207 } // namespace BPrivate
208 
209 using namespace BPrivate;
210 
211 #endif	// _TITLE_VIEW_H
212