Develop and Download Open Source Software

Browse CVS Repository

Contents of /gikonavigoeson/gikonavi/Gesture.pas

Parent Directory Parent Directory | Revision Log Revision Log | View Revision Graph Revision Graph


Revision 1.3 - (show annotations) (download) (as text)
Wed Dec 14 15:14:42 2005 UTC (18 years, 4 months ago) by h677
Branch: MAIN
Changes since 1.2: +11 -27 lines
File MIME type: text/x-pascal
マウスジェスチャー有効時に画像プレビュー上で右クリックが
効かない不具合の修正。

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 hwnd: THandle;
109 begin
110 Result := False;
111 case Message of
112 WM_MOUSEMOVE: begin
113 if FBeginGesture then begin
114 //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 SetCapture(FHandle);
121 dp := Point(x - FLastPoint.X, y - FLastPoint.Y);
122 sp := Point(Sign(dp.X), Sign(dp.Y));
123 if (dp.X * dp.X + dp.Y * dp.Y) > (FMargin * FMargin) then begin
124 dp := Point(Abs(dp.X), Abs(dp.Y));
125 if dp.X > dp.Y div 3 then
126 sp.Y := 0;
127 if dp.Y > dp.X div 3 then
128 sp.X := 0;
129 AddAction(sp.X, sp.Y);
130 FLastTime := GetTickCount;
131 FLastPoint := Point(x, y);
132 end;
133 Result := True;
134 end;
135 end;
136 WM_RBUTTONDOWN: begin
137 FBeginGesture := True;
138 FLastTime := 0;
139 FLastPoint := Point(x, y);
140 FStartPoint := Point(x, y);
141 SetCapture(FHandle);
142 end;
143 WM_RBUTTONUP: begin
144 FBeginGesture := False;
145 ReleaseCapture;
146 if FGestureItemList.Count <> 0 then begin
147 if Assigned(FOnGestureEnd) then
148 FOnGestureEnd(Self);
149 ClearGesture;
150 end;
151 end;
152 end;
153 end;
154
155 //鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申
156 procedure TMouseGesture.AddAction(sx, sy: Integer);
157 var
158 Direction: string;
159 begin
160 Direction := '';
161 if (sx > 0) and (sy = 0) then
162 Direction := '鐃緒申'
163 else if (sx < 0) and (sy = 0) then
164 Direction := '鐃緒申'
165 else if sy > 0 then
166 Direction := '鐃緒申'
167 else if sy < 0 then
168 Direction := '鐃緒申'
169 else
170 Exit;
171 if FGestureItemList.Count > 0 then begin
172 if Items[FGestureItemList.Count - 1] = Direction then
173 Exit;
174 end else begin
175 //鐃?鐃?鐃?鐃?鐃緒申鐃?鐃?鐃?
176 if Assigned(FOnGestureStart) then
177 FOnGestureStart(Self);
178 end;
179 AddGesture(Direction);
180 if Assigned(FOnGestureMove) then
181 FOnGestureMove(Self);
182 end;
183
184 //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
185 function TMouseGesture.AddGesture(Item: string): Integer;
186 begin
187 Result := FGestureItemList.Add(Item);
188 end;
189
190 //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
191 function TMouseGesture.Get(Index: Integer): string;
192 begin
193 Result := FGestureItemList[Index];
194 end;
195
196 //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
197 procedure TMouseGesture.Put(Index: Integer; Item: string);
198 begin
199 FGestureItemList[Index] := Item;
200 end;
201
202 //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
203 function TMouseGesture.GetGestureStr: string;
204 var
205 i: Integer;
206 begin
207 Result := '';
208 for i := 0 to FGestureItemList.Count - 1 do
209 Result := Result + Items[i];
210 end;
211
212 //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
213 function TMouseGesture.GetGestureCount: Integer;
214 begin
215 Result := FGestureItemList.Count;
216 end;
217
218 //鐃?鐃?鐃?鐃?鐃緒申鐃?鐃緒申鐃?鐃緒申鐃?鐃緒申鐃緒申
219 procedure TMouseGesture.ClearGesture;
220 begin
221 FGestureItemList.Clear;
222 end;
223
224 end.

Back to OSDN">Back to OSDN
ViewVC Help
Powered by ViewVC 1.1.26