1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
program eventtest;
{$mode objfpc}{$H+}
uses
{$IFDEF UNIX}{$IFDEF UseCThreads}
cthreads,
{$ENDIF}{$ENDIF}
Classes, SysUtils,
fpg_base,
fpg_main,
fpg_widget;
const
ButtonNames: array[TMouseButton] of PChar =
('Left', 'Right', 'Middle');
type
{ TMainForm }
TMainForm = class(TfpgWindow)
private
FMoveEventCount: integer;
function ShiftStateToStr(Shift: TShiftState): string;
function MouseState(AShift: TShiftState; const AMousePos: TPoint): string;
procedure MsgActivate(var msg: TfpgMessageRec); message FPGM_ACTIVATE;
procedure MsgDeActivate(var msg: TfpgMessageRec); message FPGM_DEACTIVATE;
procedure MsgClose(var msg: TfpgMessageRec); message FPGM_CLOSE;
procedure MsgPaint(var msg: TfpgMessageRec); message FPGM_PAINT;
procedure MsgResize(var msg: TfpgMessageRec); message FPGM_RESIZE;
procedure MsgMove(var msg: TfpgMessageRec); message FPGM_MOVE;
procedure MsgKeyChar(var msg: TfpgMessageRec); message FPGM_KEYCHAR;
procedure MsgKeyPress(var msg: TfpgMessageRec); message FPGM_KEYPRESS;
procedure MsgKeyRelease(var msg: TfpgMessageRec); message FPGM_KEYRELEASE;
procedure MsgMouseDown(var msg: TfpgMessageRec); message FPGM_MOUSEDOWN;
procedure MsgMouseUp(var msg: TfpgMessageRec); message FPGM_MOUSEUP;
procedure MsgMouseMove(var msg: TfpgMessageRec); message FPGM_MOUSEMOVE;
procedure MsgDoubleClick(var msg: TfpgMessageRec); message FPGM_DOUBLECLICK;
procedure MsgMouseEnter(var msg: TfpgMessageRec); message FPGM_MOUSEENTER;
procedure MsgMouseExit(var msg: TfpgMessageRec); message FPGM_MOUSEEXIT;
procedure MsgScroll(var msg: TfpgMessageRec); message FPGM_SCROLL;
protected
public
constructor Create(AOwner: TComponent); override;
procedure Show;
end;
{ TMainForm }
function TMainForm.ShiftStateToStr(Shift: TShiftState): string;
begin
SetLength(Result, 0);
if ssShift in Shift then
Result := 'Shift ';
if ssAlt in Shift then
Result := Result + 'Alt ';
if ssCtrl in Shift then
Result := Result + 'Ctrl ';
if ssMeta in Shift then
Result := Result + 'Meta ';
if ssSuper in Shift then
Result := Result + 'Super ';
if ssHyper in Shift then
Result := Result + 'Hyper ';
if ssAltGr in Shift then
Result := Result + 'AltGr ';
if ssCaps in Shift then
Result := Result + 'Caps ';
if ssNum in Shift then
Result := Result + 'Num ';
if ssScroll in Shift then
Result := Result + 'Scroll ';
if ssLeft in Shift then
Result := Result + 'Left ';
if ssRight in Shift then
Result := Result + 'Right ';
if ssMiddle in Shift then
Result := Result + 'Middle ';
if ssDouble in Shift then
Result := Result + 'Double ';
if Length(Result) > 0 then
SetLength(Result, Length(Result) - 1);
end;
function TMainForm.MouseState(AShift: TShiftState; const AMousePos: TPoint): string;
var
ShiftStateStr: String;
begin
ShiftStateStr := ShiftStateToStr(AShift);
Result := '[X=' + IntToStr(AMousePos.x) + ' Y=' + IntToStr(AMousePos.y);
if Length(ShiftStateStr) > 0 then
Result := Result + ' ' + ShiftStateStr;
Result := Result + '] ';
end;
procedure TMainForm.MsgActivate(var msg: TfpgMessageRec);
begin
Writeln('Window Activate message');
end;
procedure TMainForm.MsgDeActivate(var msg: TfpgMessageRec);
begin
Writeln('Window Deactivate message');
end;
procedure TMainForm.MsgClose(var msg: TfpgMessageRec);
begin
Writeln('Window Close message');
Halt(0);
end;
procedure TMainForm.MsgPaint(var msg: TfpgMessageRec);
var
h: integer;
begin
Writeln('Paint message');
Canvas.BeginDraw;
h := Canvas.Font.Height;
Canvas.SetColor(clWhite);
Canvas.FillRectangle(0, 0, Width, Height);
Canvas.SetTextColor(clBlack);
Canvas.DrawString(0, 0, 'Event test');
Canvas.DrawString(0, h, 'Do something interactive (move mouse, press keys...)');
Canvas.DrawString(0, h*2, 'and watch the output on the console.');
Canvas.EndDraw;
end;
procedure TMainForm.MsgResize(var msg: TfpgMessageRec);
begin
Writeln('Resize message');
FWidth := msg.Params.rect.Width;
FHeight := msg.Params.rect.Height;
WriteLn(' Window has been resized. New size: ', Width, ' x ', Height);
end;
procedure TMainForm.MsgMove(var msg: TfpgMessageRec);
begin
Writeln('Move message');
WriteLn(' Window has been moved to (', msg.Params.rect.Left, ',', msg.Params.rect.Top, ')');
end;
procedure TMainForm.MsgKeyChar(var msg: TfpgMessageRec);
var
AKeyChar: TfpgChar;
begin
Write('Character generated: ');
AKeyChar := msg.Params.keyboard.keychar;
if AKeyChar >= ' ' then
WriteLn('''', AKeyChar, '''')
else
WriteLn('#', Ord(AKeyChar[1]));
end;
procedure TMainForm.MsgKeyPress(var msg: TfpgMessageRec);
begin
WriteLn('[', ShiftStateToStr(msg.Params.keyboard.shiftstate), '] Key pressed: ',
KeycodeToText(msg.Params.keyboard.keycode, []));
end;
procedure TMainForm.MsgKeyRelease(var msg: TfpgMessageRec);
begin
WriteLn('[', ShiftStateToStr(msg.Params.keyboard.shiftstate), '] Key released: ',
KeycodeToText(msg.Params.keyboard.keycode, []));
end;
procedure TMainForm.MsgMouseDown(var msg: TfpgMessageRec);
begin
WriteLn(MouseState(msg.Params.mouse.shiftstate, Point(msg.Params.mouse.x, msg.Params.mouse.y)),
'Mouse button pressed: ', ' button=' + IntToStr(msg.Params.mouse.Buttons));
// ButtonNames[msg.Params.mouse.Buttons]);
end;
procedure TMainForm.MsgMouseUp(var msg: TfpgMessageRec);
begin
WriteLn(MouseState(msg.Params.mouse.shiftstate, Point(msg.Params.mouse.x, msg.Params.mouse.y)),
'Mouse button released: ', ' button=' + IntToStr(msg.Params.mouse.Buttons));
// ButtonNames[msg.Params.mouse.Buttons]);
end;
procedure TMainForm.MsgMouseMove(var msg: TfpgMessageRec);
begin
inc(FMoveEventCount);
// only report mouse moves every 10 messages - just to limit the output a bit
if (FMoveEventCount mod 10) = 0 then
begin
WriteLn(MouseState(msg.Params.mouse.shiftstate, Point(msg.Params.mouse.x, msg.Params.mouse.y)), 'Mouse moved');
end;
end;
procedure TMainForm.MsgDoubleClick(var msg: TfpgMessageRec);
begin
Writeln('Mouse doubleclick message');
end;
procedure TMainForm.MsgMouseEnter(var msg: TfpgMessageRec);
begin
WriteLn(MouseState(msg.Params.mouse.shiftstate, Point(msg.Params.mouse.x, msg.Params.mouse.y)), 'Mouse entered window');
end;
procedure TMainForm.MsgMouseExit(var msg: TfpgMessageRec);
begin
WriteLn('Mouse left window');
end;
procedure TMainForm.MsgScroll(var msg: TfpgMessageRec);
var
delta: Integer;
begin
delta := msg.Params.mouse.delta;
Writeln('Mouse scroll delta=' + IntToStr(delta) + ' button=' + IntToStr(msg.Params.mouse.Buttons));
end;
constructor TMainForm.Create(AOwner: TComponent);
begin
inherited Create(aowner);
FMoveEventCount := 0;
FWidth := 400;
FHeight := 100;
WindowAttributes := [waSizeable, waScreenCenterPos];
end;
procedure TMainForm.Show;
begin
AllocateWindowHandle;
DoSetWindowVisible(True);
// We can't set a title if we don't have a window handle. So we do that here
// and not in the constructor.
SetWindowTitle('fpGFX event test');
end;
procedure MainProc;
var
frm: TMainForm;
begin
fpgApplication.Initialize;
frm := TMainForm.Create(nil);
frm.Show;
fpgApplication.Run;
frm.Free;
end;
begin
MainProc;
end.
|
