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Annotation of /gikonavigoeson/gikonavi/Gesture.pas

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Revision 1.5 - (hide annotations) (download) (as text)
Tue Feb 21 15:35:49 2006 UTC (18 years, 2 months ago) by h677
Branch: MAIN
Changes since 1.4: +2 -1 lines
File MIME type: text/x-pascal
マウスジェスチャー-の不具合とレス番指定URLを踏んだときの処理用に
TThreadItemを拡張

1 yoffy 1.1 unit Gesture;
2    
3     interface
4    
5     uses
6     Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
7     Dialogs, Math, StrUtils;
8    
9     type
10     TMouseGesture = class(TObject)
11     private
12     FHook: Integer;
13     FHandle: THandle;
14     FGestureItemList: TStringList;
15     FBeginGesture: Boolean;
16     FCancelMode: Boolean;
17     FLastTime: Cardinal;
18     FStartPoint: TPoint;
19     FLastPoint: TPoint;
20     FMargin: Integer;
21     FOnGestureStart: TNotifyEvent;
22     FOnGestureMove: TNotifyEvent;
23     FOnGestureEnd: TNotifyEvent;
24     function GetGestureCount: Integer;
25     function CheckAction(Message: Integer; x, y: Integer): Boolean;
26     procedure AddAction(sx, sy: Integer);
27     function AddGesture(Item: string): Integer;
28     procedure ClearGesture;
29     function Get(Index: integer): string;
30     procedure Put(Index: integer; Item: string);
31     public
32     constructor Create;
33     destructor Destroy; override;
34     procedure SetHook(hWnd: THandle);
35     procedure UnHook;
36     property Items[Index: Integer]: string read Get write Put; default;
37     property GestureCount: Integer read GetGestureCount;
38     property Margin: Integer read FMargin write FMargin;
39     function GetGestureStr: string;
40     property OnGestureStart: TNotifyEvent read FOnGestureStart write FOnGestureStart;
41     property OnGestureMove: TNotifyEvent read FOnGestureMove write FOnGestureMove;
42     property OnGestureEnd: TNotifyEvent read FOnGestureEnd write FOnGestureEnd;
43     end;
44    
45     function GestureProc(nCode: Integer; wParam: WPARAM; lParam: LPARAM): LRESULT; stdcall;
46    
47     var
48     MouseGesture: TMouseGesture;
49    
50     implementation
51    
52     constructor TMouseGesture.Create;
53     begin
54     inherited;
55     FHook := 0;
56     FCancelMode := False;
57     FBeginGesture := False;
58     FMargin := 15;
59     FGestureItemList := TStringList.Create;
60     end;
61    
62     destructor TMouseGesture.Destroy;
63     begin
64     UnHook;
65     ClearGesture;
66     FGestureItemList.Free;
67     inherited;
68     end;
69    
70     //鐃?鐃?鐃?鐃?鐃?鐃?
71     procedure TMouseGesture.SetHook(hWnd: THandle);
72     begin
73     if FHook <> 0 then
74     Exit;
75     FHandle := hWnd;
76     UnHook;
77     FHook := SetWindowsHookEx(WH_MOUSE, @GestureProc, 0{HInstance}, GetCurrentThreadId);
78     end;
79    
80     //鐃?鐃?鐃?鐃?鐃?鐃?鐃緒申鐃緒申
81     procedure TMouseGesture.UnHook;
82     begin
83     if FHook = 0 then
84     Exit;
85     UnhookWindowsHookEx(FHook);
86     FHook := 0;
87     end;
88    
89     //鐃?鐃?鐃?鐃?鐃緒申鐃?鐃?鐃緒申
90     function GestureProc(nCode: Integer; wParam: WPARAM; lParam: LPARAM): LRESULT; stdcall;
91     var
92     mhs: PMouseHookStruct;
93     begin
94     if nCode = HC_ACTION then begin
95     mhs := PMouseHookStruct(lParam);
96     if MouseGesture.CheckAction(wParam, mhs^.pt.X, mhs^.pt.Y) then begin
97     Result := 1;
98     Exit;
99     end;
100     end;
101     Result := CallNextHookEx(MouseGesture.FHook, nCode, wParam, lParam);
102     end;
103    
104     function TMouseGesture.CheckAction(Message: Integer; x, y: Integer): Boolean;
105     var
106     dp: TPoint;
107     sp: TPoint;
108 h677 1.2 hwnd: THandle;
109 h677 1.5 r: LongBool;
110 yoffy 1.1 begin
111     Result := False;
112     case Message of
113     WM_MOUSEMOVE: begin
114     if FBeginGesture then begin
115 h677 1.2 //鐃緒申鐃?鐃?鐃?鐃緒申鐃?鐃緒申鐃?鐃?鐃緒申鐃?鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申
116     hwnd := GetCapture;
117     //鐃?鐃?鐃?鐃?鐃?鐃?鐃?鐃緒申鐃?鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃?鐃?鐃緒申鐃緒申鐃緒申
118     if (hwnd <> 0) and (hwnd <> FHandle) then begin
119     ReleaseCapture;
120     end;
121 yoffy 1.1 SetCapture(FHandle);
122     dp := Point(x - FLastPoint.X, y - FLastPoint.Y);
123     sp := Point(Sign(dp.X), Sign(dp.Y));
124 h677 1.2 if (dp.X * dp.X + dp.Y * dp.Y) > (FMargin * FMargin) then begin
125 yoffy 1.1 dp := Point(Abs(dp.X), Abs(dp.Y));
126 h677 1.2 if dp.X > dp.Y div 3 then
127 yoffy 1.1 sp.Y := 0;
128 h677 1.2 if dp.Y > dp.X div 3 then
129 yoffy 1.1 sp.X := 0;
130     AddAction(sp.X, sp.Y);
131     FLastTime := GetTickCount;
132     FLastPoint := Point(x, y);
133     end;
134     Result := True;
135     end;
136     end;
137     WM_RBUTTONDOWN: begin
138 h677 1.4 if not FCancelMode then begin
139     FBeginGesture := True;
140     FLastTime := 0;
141     FLastPoint := Point(x, y);
142     FStartPoint := Point(x, y);
143     Result := True;
144     SetCapture(FHandle);
145     end;
146 yoffy 1.1 end;
147     WM_RBUTTONUP: begin
148 h677 1.4 if FCancelMode then
149     FCancelMode := False
150 h677 1.5 else if (FBeginGesture) then begin
151 h677 1.4 FBeginGesture := False;
152     ReleaseCapture;
153     if FGestureItemList.Count <> 0 then begin
154     if Assigned(FOnGestureEnd) then
155     FOnGestureEnd(Self);
156     ClearGesture;
157     end else begin
158     FCancelMode := True;
159     //鐃?鐃?鐃?鐃?鐃緒申鐃?鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃?鐃?鐃?鐃?DOWN,UP鐃緒申鐃?鐃?鐃緒申鐃緒申鐃?鐃?
160     mouse_event(MOUSEEVENTF_ABSOLUTE or MOUSEEVENTF_RIGHTDOWN, FStartPoint.X, FStartPoint.Y, 0, 0);
161     mouse_event(MOUSEEVENTF_ABSOLUTE or MOUSEEVENTF_RIGHTUP, x, y, 0, 0);
162     end;
163 yoffy 1.1 end;
164     end;
165     end;
166     end;
167    
168     //鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申
169     procedure TMouseGesture.AddAction(sx, sy: Integer);
170     var
171     Direction: string;
172     begin
173     Direction := '';
174     if (sx > 0) and (sy = 0) then
175     Direction := '鐃緒申'
176     else if (sx < 0) and (sy = 0) then
177     Direction := '鐃緒申'
178     else if sy > 0 then
179     Direction := '鐃緒申'
180     else if sy < 0 then
181     Direction := '鐃緒申'
182     else
183     Exit;
184     if FGestureItemList.Count > 0 then begin
185     if Items[FGestureItemList.Count - 1] = Direction then
186     Exit;
187     end else begin
188     //鐃?鐃?鐃?鐃?鐃緒申鐃?鐃?鐃?
189     if Assigned(FOnGestureStart) then
190     FOnGestureStart(Self);
191     end;
192     AddGesture(Direction);
193     if Assigned(FOnGestureMove) then
194     FOnGestureMove(Self);
195     end;
196    
197     //鐃緒申鐃緒申鐃緒申鐃?鐃?鐃?鐃?鐃緒申鐃?鐃緒申鐃?鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申
198     function TMouseGesture.AddGesture(Item: string): Integer;
199     begin
200     Result := FGestureItemList.Add(Item);
201     end;
202    
203     //鐃?鐃緒申鐃緒申鐃緒申鐃緒申index鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申
204     function TMouseGesture.Get(Index: Integer): string;
205     begin
206     Result := FGestureItemList[Index];
207     end;
208    
209     //鐃?鐃緒申鐃緒申鐃緒申鐃緒申index鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申
210     procedure TMouseGesture.Put(Index: Integer; Item: string);
211     begin
212     FGestureItemList[Index] := Item;
213     end;
214    
215     //鐃?鐃?鐃?鐃?鐃緒申鐃?鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申
216     function TMouseGesture.GetGestureStr: string;
217     var
218     i: Integer;
219     begin
220     Result := '';
221     for i := 0 to FGestureItemList.Count - 1 do
222     Result := Result + Items[i];
223     end;
224    
225     //鐃?鐃?鐃?鐃?鐃緒申鐃?鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申
226     function TMouseGesture.GetGestureCount: Integer;
227     begin
228     Result := FGestureItemList.Count;
229     end;
230    
231     //鐃?鐃?鐃?鐃?鐃緒申鐃?鐃緒申鐃?鐃緒申鐃?鐃緒申鐃緒申
232     procedure TMouseGesture.ClearGesture;
233     begin
234     FGestureItemList.Clear;
235     end;
236    
237     end.

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