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Annotation of /gikonavigoeson/gikonavi/Gesture.pas

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Revision 1.1.4.1 - (hide annotations) (download) (as text)
Sat Jul 9 05:28:35 2005 UTC (18 years, 9 months ago) by h677
Branch: Bb50
CVS Tags: v1_50_2_606, v1_50_0_595, v1_50_0_598, v1_50_0_596, v1_50_0_603, v1_50_0_604, v1_50_0_606, b50, v1_50_0_600, v1_50_2_604, v1_50_0_602, v1_50_0_601, v1_50_0_605, v1_50_0_599
Changes since 1.1: +14 -3 lines
File MIME type: text/x-pascal
マウスジェスチャーのコンテキスト上とかでの動作の修正

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 1.1.4.1 hwnd: THandle;
109 yoffy 1.1 begin
110     Result := False;
111     case Message of
112     WM_MOUSEMOVE: begin
113     if FBeginGesture then begin
114 h677 1.1.4.1 //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
115     hwnd := GetCapture;
116     //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
117     if (hwnd <> 0) and (hwnd <> FHandle) then begin
118     ReleaseCapture;
119     end;
120 yoffy 1.1 SetCapture(FHandle);
121     dp := Point(x - FLastPoint.X, y - FLastPoint.Y);
122     sp := Point(Sign(dp.X), Sign(dp.Y));
123 h677 1.1.4.1 if (dp.X * dp.X + dp.Y * dp.Y) > (FMargin * FMargin) then begin
124 yoffy 1.1 dp := Point(Abs(dp.X), Abs(dp.Y));
125 h677 1.1.4.1 if dp.X > dp.Y div 3 then
126 yoffy 1.1 sp.Y := 0;
127 h677 1.1.4.1 if dp.Y > dp.X div 3 then
128 yoffy 1.1 sp.X := 0;
129     AddAction(sp.X, sp.Y);
130     FLastTime := GetTickCount;
131     FLastPoint := Point(x, y);
132     end;
133 h677 1.1.4.1 //鐃?鐃?鐃?鐃緒申鐃緒申鐃緒申鐃緒申
134     if (hwnd <> 0) and (hwnd <> FHandle) then
135     SetCapture(hwnd);
136    
137 yoffy 1.1 Result := True;
138     end;
139     end;
140     WM_RBUTTONDOWN: begin
141     if not FCancelMode then begin
142     FBeginGesture := True;
143     FLastTime := 0;
144     FLastPoint := Point(x, y);
145     FStartPoint := Point(x, y);
146     CheckAction := True;
147     SetCapture(FHandle);
148     end;
149     end;
150     WM_RBUTTONUP: begin
151     if FCancelMode then
152     FCancelMode := False
153     else begin
154     FBeginGesture := False;
155     ReleaseCapture;
156     if FGestureItemList.Count <> 0 then begin
157     if Assigned(FOnGestureEnd) then
158     FOnGestureEnd(Self);
159     ClearGesture;
160     end else begin
161     FCancelMode := True;
162     //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?
163     mouse_event(MOUSEEVENTF_ABSOLUTE or MOUSEEVENTF_RIGHTDOWN, FStartPoint.X, FStartPoint.Y, 0, 0);
164     mouse_event(MOUSEEVENTF_ABSOLUTE or MOUSEEVENTF_RIGHTUP, x, y, 0, 0);
165     end;
166     end;
167     end;
168     end;
169     end;
170    
171     //鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申
172     procedure TMouseGesture.AddAction(sx, sy: Integer);
173     var
174     Direction: string;
175     begin
176     Direction := '';
177     if (sx > 0) and (sy = 0) then
178     Direction := '鐃緒申'
179     else if (sx < 0) and (sy = 0) then
180     Direction := '鐃緒申'
181     else if sy > 0 then
182     Direction := '鐃緒申'
183     else if sy < 0 then
184     Direction := '鐃緒申'
185     else
186     Exit;
187     if FGestureItemList.Count > 0 then begin
188     if Items[FGestureItemList.Count - 1] = Direction then
189     Exit;
190     end else begin
191     //鐃?鐃?鐃?鐃?鐃緒申鐃?鐃?鐃?
192     if Assigned(FOnGestureStart) then
193     FOnGestureStart(Self);
194     end;
195     AddGesture(Direction);
196     if Assigned(FOnGestureMove) then
197     FOnGestureMove(Self);
198     end;
199    
200     //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
201     function TMouseGesture.AddGesture(Item: string): Integer;
202     begin
203     Result := FGestureItemList.Add(Item);
204     end;
205    
206     //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
207     function TMouseGesture.Get(Index: Integer): string;
208     begin
209     Result := FGestureItemList[Index];
210     end;
211    
212     //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
213     procedure TMouseGesture.Put(Index: Integer; Item: string);
214     begin
215     FGestureItemList[Index] := Item;
216     end;
217    
218     //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
219     function TMouseGesture.GetGestureStr: string;
220     var
221     i: Integer;
222     begin
223     Result := '';
224     for i := 0 to FGestureItemList.Count - 1 do
225     Result := Result + Items[i];
226     end;
227    
228     //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
229     function TMouseGesture.GetGestureCount: Integer;
230     begin
231     Result := FGestureItemList.Count;
232     end;
233    
234     //鐃?鐃?鐃?鐃?鐃緒申鐃?鐃緒申鐃?鐃緒申鐃?鐃緒申鐃緒申
235     procedure TMouseGesture.ClearGesture;
236     begin
237     FGestureItemList.Clear;
238     end;
239    
240     end.

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