summaryrefslogtreecommitdiff
path: root/examples/corelib/aggcanvas/agg_canvas_test.lpr
blob: 3b3a75ef648ce895347337d136ad672bd848a323 (plain)
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
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
{
  fpGUI  -  Free Pascal GUI Toolkit

  Copyright (C) 2006 - 2013 See the file AUTHORS.txt, included in this
  distribution, for details of the copyright.

  See the file COPYING.modifiedLGPL, included in this distribution,
  for details about redistributing fpGUI.

  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.

  Description:
    This demo was simply to test the Agg2D unit and the TAgg2D canvas
    class. In this demo the AggPas TAgg2D canvas does all the painting.

    *** IMPORTANT ***
      For this demo to work, the fpGUI Toolkit MUST be compiled with
      the AggCanvas compiler define enabled.
}

program agg_canvas_test;

{$mode objfpc}{$H+}

uses
  Classes, SysUtils,
  fpg_base,
  fpg_main,
  fpg_form,
  fpg_imgfmt_bmp, 
  fpg_widget,
  Agg2D,
  fpg_dialogs;


type
  TMainForm = class(TfpgForm)
  private
    {@VFD_HEAD_BEGIN: MainForm}
    {@VFD_HEAD_END: MainForm}
    procedure   FormKeyPressed(Sender: TObject; var KeyCode: word; var ShiftState: TShiftState; var Consumed: boolean);
    procedure   FormPaint(Sender: TObject);
    procedure   CustomPaintJob;
  public
    procedure   AfterCreate; override;
  end;



{ TMainForm }

procedure TMainForm.FormKeyPressed(Sender: TObject; var KeyCode: word;
  var ShiftState: TShiftState; var Consumed: boolean);
begin
  if KeyCode = keyF1 then
  begin
    ShowMessage('This is a simple Canvas primitives painting test.');
  end;
end;

procedure TMainForm.FormPaint(Sender: TObject);
begin
  CustomPaintJob;
end;

// We can now call all the paint methods from HandlePaint or
// the OnPaint event.fpgcanvas
procedure TMainForm.CustomPaintJob;
var
  r: TfpgRect;
  fnt: TfpgFont;
  y: integer;
  ac: TAgg2D;
  c1, c2: TAggColor;
  d: double;
  i: integer;

  procedure DrawMacLionButton(const x, y: double; const astate: byte; const atext: ansistring);
  { AState values are interpreted as follows:
      0:  normal state
      1:  hover state
      2:  clicked state }
  var
    x1, y1, x2, y2, h, w: double;
    c1, c2: TAggColor;
  begin
    h := 21;
    w := 100;
    x1 := x;
    y1 := y;
    x2 := x1 + w;
    y2 := y1 + h;

    ac.NoLine;
  
    // Top vertical gradient
    case astate of
      0:  begin
            c1.Construct(255, 255, 255, 255);
            c2.Construct(243, 243, 243, 255);
          end;
      1:  begin
            c1.Construct(204, 229, 252, 255);
            c2.Construct(161, 209, 249, 255);
          end;
      2:  begin
            c1.Construct(144, 195, 241, 255);
            c2.Construct(113, 180, 239, 255);
          end;
    end;
    ac.FillLinearGradient(x1, y1, x1, y1+(h/2), c1, c2);
    ac.RoundedRect(x1+1, y1+1, x2+0.5, y2-(h/2)+0.5, 0.3, 3/2, 0.3, 3/2);
  
    // Bottom vertical gradient
    case astate of
      0:  begin
            c1.Construct(236, 236, 236, 255);
            c2.Construct(242, 242, 242, 255);
          end;
      1:  begin
            c1.Construct(143, 202, 251, 255);
            c2.Construct(207, 245, 253, 255);
          end;
      2:  begin
            c1.Construct(97, 173, 240, 255);
            c2.Construct(147, 206, 241, 255);
          end;
    end;
    ac.FillLinearGradient(x1, y1+(h/2)+1, x1, y2, c1, c2);
    ac.RoundedRect(x1+1, y1+(h/2)+0.5, x2+0.5, y2+0.5, 0.3, 3/2, 0.3, 3/2);
  
    // outer rounded rectangle
    ac.NoFill;
    case astate of 
      0:  begin
            ac.LineColor($9a, $9a, $9a);
          end;
      1,
      2:  begin
            ac.LineColor(86, 87, 143);
          end;
    end;
    ac.LineWidth(1.0);
    ac.RoundedRect(x1+0.5, y1+0.5, x2+0.5, y2+0.5, 3, 3);
    
    // Slight shadow under the button
    ac.LineColor($df, $df, $df, $ff);
    ac.Line(x1+0.5, y2+1.5, x2-0.5, y2+1.5);
  
    // button text
    c1.Construct(0,0,0);
    ac.FillColor(c1);
    ac.NoLine;
    ac.Font('arialbd.ttf', 13);
    ac.TextAlignment(AGG_AlignCenter ,AGG_AlignCenter );
    ac.Text(
      (x1 + x2 ) / 2.0 ,
      (y1 + y2 ) / 2.0 ,
      atext,
      true ,0.0 ,0.0 );
  
  end;
begin
  // casting so we have full access to the Agg2D canvas functions
  ac := TAgg2D(Canvas);

  ac.LineWidth(1.0);
//  ac.ClearAll($ed, $ed, $ed); // mac os x window background color
  ac.ClearAll(255, 255, 255);

  // Testing Rectangles
  Canvas.SetColor(clBlack);
  r.SetRect(0, 0, 1, 1);     // 1x1  (this is really a dot)
  Canvas.DrawRectangle(r);
  Canvas.SetColor(clRed);
  r.SetRect(0, 1, 1, 5);    // 1x5  (this is really a vertical line)
  Canvas.DrawRectangle(r);
  Canvas.SetColor(clMagenta);
  r.SetRect(1, 0, 5, 1);    // 5x1  (this is really a horizontal line)
  Canvas.DrawRectangle(r);

  Canvas.SetColor(clBlack);
  r.Top       := 5;
  r.Left      := 60;
  r.Width     := 50;
  r.Height    := 50;
  Canvas.DrawRectangle(r);

  r.Left      := 120;
  Canvas.SetLineStyle(2, lsDash);
  Canvas.DrawRectangle(r);

  r.Left      := 180;
  Canvas.SetColor(clGreen);
  Canvas.SetLineStyle(1, lsDot);
  Canvas.DrawRectangle(r);

  r.Left      := 240;
  Canvas.SetColor(clBlue);
  Canvas.SetLineStyle(1, lsSolid);
  Canvas.FillRectangle(r);

  // Draw filled triangle
  Canvas.Color := clOrange;
  Canvas.FillTriangle(200, 150, 175, 175, 275, 175);

  // Testing line drawing
  ac.NoFill;
  Canvas.SetColor(clBlue);
  Canvas.DrawLine(5, 5, 54, 54);
  Canvas.DrawLine(54, 5, 5, 54);
  Canvas.SetColor(clRed);
  { Diagonal line }
  r.SetRect(60, 5, 50, 50);
  Canvas.DrawLine(r.Left, r.Top, r.Right, r.Bottom);
  { Horizontal line }
  Canvas.DrawLine(r.Left, r.Top-2, r.Right, r.Top-2);
  { Vertical line }
  Canvas.DrawLine(r.Left-2, r.Top, r.Left-2, r.Bottom);


  // Testing Text and Fonts
  y := 60;
  Canvas.SetTextColor(clBlack);
  Canvas.DrawString(5, y, 'This text must be black and default font');

  // red dot indicates top/left corner of where previous text was started
  Canvas.Pixels[5,y] := clRed;
//  Canvas.DrawLine(5,y-4, 5,y+5);
//  Canvas.DrawLine(1,y, 10, y);

  Canvas.SetTextColor(clRed);
  y := y + Canvas.Font.Height;  // fonts are different sizes on differet OS's
  Canvas.DrawString(5, y, 'This text must be red.');
  Canvas.SetTextColor(clBlack);
  y := y + Canvas.Font.Height;
  Canvas.DrawString(5, y, 'Russian (UTF-8) text: Невозможно создать директорию');
  y := y + Canvas.Font.Height;
  fnt := fpgApplication.GetFont('Times-14:bold');
  Canvas.Font := fnt;
  Canvas.DrawString(5, y, 'Font used is ' + Canvas.Font.FontDesc);
  y := y + Canvas.Font.Height;


  // Testing basic style drawings
  Canvas.Font := fpgApplication.DefaultFont;
  Canvas.DrawString(320, 3, 'DrawButtonFace():');

  r.SetRect(300, 20, 75, 25);
  Canvas.DrawButtonFace(r, []);
  Canvas.DrawString(385, 20, '= []');
  r.Top := 50;
  Canvas.DrawButtonFace(r, [btfIsDefault]);
  Canvas.DrawString(385, 50, '= [btnIsDefault]');
  r.Top := 80;
  Canvas.DrawButtonFace(r, [btfIsPressed]);
  Canvas.DrawString(385, 80, '= [btnIsPressed]');
  r.Top := 110;
  Canvas.DrawButtonFace(r, [btfIsEmbedded, btfIsPressed]);
  Canvas.DrawString(385, 110, '= [embed & press]');
  r.Top := 140;
  Canvas.DrawButtonFace(r, [btfIsEmbedded]);
  Canvas.DrawString(385, 140, '= [btnIsEmbedded]');

  Canvas.DrawString(45, y, 'DrawControlFrame():');
  y := y + Canvas.Font.Height;
  fpgStyle.DrawControlFrame(Canvas, 5, y, 150, 23);

  // A Vector Text example
  //----------------------
  ac.LineWidth(1 );
  ac.TextAlignment(AGG_AlignLeft ,AGG_AlignBottom );
  // Normal Text
  ac.LineColor($00 ,$00 ,$8B );
  ac.FillColor($1E ,$90 ,$FF );
  ac.Font('times.ttf' ,45);
  ac.Text(20 ,250 , 'Vectors are cool !' );
  // Upside-down Text
  ac.FlipText(true );
  ac.LineColor($C0 ,$C0 ,$C0 );
  ac.FillColor($C0 ,$C0 ,$C0 );
  ac.Text(20 ,255 ,'Vectors are cool !' );

  // reset the text flip effect
  ac.FlipText(False);

  // Cool new button styles are now possible
  DrawMacLionButton(65, 300, 0, 'Normal');
  DrawMacLionButton(65, 330, 1, 'Hover');
  DrawMacLionButton(65, 360, 2, 'Clicked');
  // nice display of virtical text
  c1.Construct(0,0,0);
  ac.FillColor(c1);
  ac.TextHints(true);
  ac.NoLine;
  ac.Font('arial.ttf', 13, false,
     false, AGG_VectorFontCache, 45.0);
  ac.Text(190, 310, 'Mac OS X Lion buttons', true ,0.0 ,0.0 );
  // reset text alignment to normal behaviour
  ac.TextAlignment(AGG_AlignLeft ,AGG_AlignBottom );

  
  // Star shape
  ac.LineCap(AGG_CapRound);
  ac.LineWidth(5);
  ac.LineColor($32 ,$cd ,$32 );
  c1.Construct(0, 0 , 255, 200);
  c2.Construct(0, 0, 255, 50);
  ac.FillLinearGradient(100, 100, 150, 150, c1, c2);
  ac.Star(100 ,150 ,30 ,70 ,55 ,5 );

  // Draw Arc from 45 degrees to 270 degrees 
  ac.LineColor($FF ,$00 ,$00 );
  ac.LineWidth(5 );
  ac.Arc(300 ,320 ,80 ,50 ,Deg2Rad(45 ) ,Deg2Rad(270 ) );


  // Lines at various thicknesses & coordinate translation
  ac.LineColor(0, 0, 0);
  ac.LineCap(AGG_CapRound);
  d := 0.1;
  for i := 1 to 10 do
  begin
    ac.LineWidth(d);
    ac.Line(350, 240, 410, 180);
    ac.Translate(8, 0);
    d := d + 0.3;
  end;
  ac.ResetTransformations;

  
  
  ac.LineWidth(20 );
  ac.ResetPath;
  ac.MoveTo(360 ,310 );
  ac.LineTo(400 ,270 );
  ac.LineTo(440 ,310 );

  // Default AGG_JoinRound
  ac.Translate(10 ,-10 );
  ac.DrawPath(AGG_StrokeOnly );

  // Change to AGG_JoinMiter
  ac.LineJoin (AGG_JoinMiter );
  ac.Translate(0 ,50 );
  ac.DrawPath (AGG_StrokeOnly );

  // Change to AGG_JoinBevel
  ac.LineJoin (AGG_JoinBevel );
  ac.Translate(0 ,50 );
  ac.DrawPath (AGG_StrokeOnly );

  ac.ResetTransformations;
end;

procedure TMainForm.AfterCreate;
begin
  {%region 'Auto-generated GUI code' -fold}
  {@VFD_BODY_BEGIN: MainForm}
  Name := 'MainForm';
  SetPosition(357, 214, 500, 400);
  WindowTitle := 'fpGUI with AGG-powered Canvas test';
  Hint := '';
  WindowPosition := wpOneThirdDown;
  OnKeyPress := @FormKeyPressed;
  OnPaint := @FormPaint;

  {@VFD_BODY_END: MainForm}
  {%endregion}

  fpgApplication.HelpKey := keyNul;
end;


procedure MainProc;
var
  frm: TMainForm;
begin
  fpgApplication.Initialize;

  frm := TMainForm.Create(nil);
  frm.Show;
  fpgApplication.Run;
  frm.Free;
end;


begin
  MainProc;
end.