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
|
(*
History++ plugin for Miranda IM: the free IM client for Microsoft* Windows*
Copyright (C) 2006-2009 theMIROn, 2003-2006 Art Fedorov.
History+ parts (C) 2001 Christian Kastner
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*)
{-----------------------------------------------------------------------------
EmptyHistoryForm (historypp project)
Version: 1.0
Created: 15.03.2008
Author: theMIROn
[ Description ]
Empty history dialog
[ History ]
1.0 (15.04.08) First version.
[ Modifications ]
[ Known Issues ]
Contributors: theMIROn, Art Fedorov
-----------------------------------------------------------------------------}
unit EmptyHistoryForm;
interface
uses Windows, Classes, Controls, Graphics,
Forms, Buttons, StdCtrls, ExtCtrls,
// HistoryControls,
m_api;
type
TEmptyHistoryFrm = class(TForm)
btYes: TButton;
btNo: TButton;
paButtons: TPanel;
Image: TImage;
Text: TLabel;
procedure FormCreate(Sender: TObject);
procedure FormKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
procedure FormShow(Sender: TObject);
procedure btYesClick(Sender: TObject);
private
FContact: TMCONTACT;
procedure TranslateForm;
procedure PrepareForm;
procedure SetContact(const Value: TMCONTACT);
procedure EmptyHistory(hContact: TMCONTACT);
protected
function GetFormText: String;
public
property Contact: TMCONTACT read FContact write SetContact;
end;
implementation
uses
Math, SysUtils, HistoryForm,
hpp_global, hpp_forms, hpp_contacts, hpp_database, hpp_bookmarks;
{$R *.dfm}
function GetAveCharSize(Canvas: TCanvas): TPoint;
var
I: Integer;
Buffer: array[0..51] of WideChar;
tm: TTextMetric;
begin
for I := 0 to 25 do Buffer[I] := WideChar(I + Ord('A'));
for I := 0 to 25 do Buffer[I + 26] := WideChar(I + Ord('a'));
GetTextMetrics(Canvas.Handle, tm);
GetTextExtentPointW(Canvas.Handle, Buffer, 52, TSize(Result));
Result.X := (Result.X div 26 + 1) div 2;
Result.Y := tm.tmHeight;
end;
function TEmptyHistoryFrm.GetFormText: String;
var
DividerLine, ButtonCaptions: String;
I: integer;
begin
DividerLine := StringOfChar('-', 27) + sLineBreak;
for I := 0 to ComponentCount - 1 do
if Components[I] is TButton then
ButtonCaptions := ButtonCaptions +
TButton(Components[I]).Caption + StringOfChar(' ', 3);
ButtonCaptions := StringReplace(ButtonCaptions,'&','', [rfReplaceAll]);
Result := DividerLine + Caption + sLineBreak +
DividerLine + Text.Caption + sLineBreak +
DividerLine + ButtonCaptions + sLineBreak +
DividerLine;
end;
procedure TEmptyHistoryFrm.TranslateForm;
begin
Caption := TranslateUnicodeString(Caption);
btYes.Caption := TranslateUnicodeString(btYes.Caption);
btNo.Caption := TranslateUnicodeString(btNo.Caption);
end;
procedure TEmptyHistoryFrm.PrepareForm;
const
mcSpacing = 8;
mcButtonWidth = 50;
mcButtonHeight = 14;
mcButtonSpacing = 4;
var
DialogUnits: TPoint;
HorzSpacing, VertSpacing,
ButtonWidth, ButtonHeight, ButtonSpacing, ButtonGroupWidth,
IconTextWidth, IconTextHeight: Integer;
TextRect: TRect;
begin
DialogUnits := GetAveCharSize(Canvas);
HorzSpacing := MulDiv(mcSpacing, DialogUnits.X, 8);
VertSpacing := MulDiv(mcSpacing, DialogUnits.X, 4);
ButtonWidth := MulDiv(mcButtonWidth, DialogUnits.X, 4);
ButtonHeight := MulDiv(mcButtonHeight, DialogUnits.Y, 8);
ButtonSpacing := MulDiv(mcButtonSpacing, DialogUnits.X, 4);
SetRect(TextRect, 0, 0, Screen.Width div 2, 0);
DrawTextW(Canvas.Handle, PChar(Text.Caption),
Length(Text.Caption)+1, TextRect,
DT_EXPANDTABS or DT_CALCRECT or DT_WORDBREAK or
DrawTextBiDiModeFlagsReadingOnly);
IconTextWidth := Image.Width + HorzSpacing + TextRect.Right;
IconTextHeight := Max(Image.Height,TextRect.Bottom);
ButtonGroupWidth := ButtonWidth*2 + ButtonSpacing;
BorderWidth := VertSpacing;
ClientWidth := Max(IconTextWidth, ButtonGroupWidth);
ClientHeight := IconTextHeight + VertSpacing + paButtons.Height;
Text.SetBounds(Image.Width + HorzSpacing, 0,
TextRect.Right, TextRect.Bottom);
btYes.SetBounds((ClientWidth - ButtonGroupWidth) div 2,0, ButtonWidth, ButtonHeight);
btNo.SetBounds(btYes.Left + btYes.Width + ButtonSpacing,0, ButtonWidth, ButtonHeight);
end;
procedure TEmptyHistoryFrm.FormShow(Sender: TObject);
begin
TranslateForm;
PrepareForm;
end;
procedure TEmptyHistoryFrm.FormCreate(Sender: TObject);
var
NonClientMetrics: TNonClientMetrics;
begin
NonClientMetrics.cbSize := sizeof(NonClientMetrics);
if SystemParametersInfo(SPI_GETNONCLIENTMETRICS, 0, @NonClientMetrics, 0) then
Font.Handle := CreateFontIndirect(NonClientMetrics.lfMessageFont);
MakeFontsParent(Self);
Canvas.Font := Font;
DoubleBuffered := True;
MakeDoubleBufferedParent(Self);
end;
procedure TEmptyHistoryFrm.FormKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
begin
if (Shift = [ssCtrl]) and (Key = Word('C')) then
begin
CopyToClip(GetFormText,CP_ACP);
Key := 0;
end;
end;
procedure TEmptyHistoryFrm.SetContact(const Value: TMCONTACT);
begin
FContact := Value;
Image.Picture.Icon.Handle := LoadIcon(0, IDI_QUESTION);
Text.Caption :=
TranslateW('Do you really want to delete ALL items for this contact?')+#10#13+
#10#13+
TranslateW('Note: It can take several minutes for large histories');
btYes.Default := true;
end;
procedure TEmptyHistoryFrm.EmptyHistory(hContact: TMCONTACT);
var
hDBEvent,prevhDbEvent: THandle;
begin
BookmarkServer.Contacts[hContact].Clear;
hDBEvent := db_event_last(hContact);
SetSafetyMode(False);
while hDBEvent <> 0 do
begin
prevhDbEvent := db_event_prev(hContact,hDBEvent);
if db_event_delete(hDBEvent) = 0 then
hDBEvent := prevhDbEvent
else
hDBEvent := 0;
end;
SetSafetyMode(True);
end;
procedure TEmptyHistoryFrm.btYesClick(Sender: TObject);
begin
if Assigned(Owner) and (Owner is THistoryFrm) then
THistoryFrm(Owner).EmptyHistory
else
EmptyHistory(FContact);
end;
end.
|
