-
Notifications
You must be signed in to change notification settings - Fork 0
/
fonttf.adb
845 lines (525 loc) · 18.3 KB
/
fonttf.adb
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
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
--
-- Copyright (C) 2019 <fastrgv@gmail.com>
--
-- 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 3 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 may read the full text of the GNU General Public License
-- at <http://www.gnu.org/licenses/>.
--
---------------------------------------------------------------------------
with gl, gl.binding, gl.pointers;
with glu, glu.binding, glu.pointers;
with glext, glext.binding, glext.pointers;
with sdl; use sdl;
with matutils;
with stex;
with shader; use shader;
with pictobj;
with pngloader;
---------------------------------------------------------------------------
with ada.calendar;
with ada.characters.handling;
with ada.strings.fixed;
with System;
with Interfaces.C;
use type interfaces.c.unsigned;
with Interfaces.C.Pointers;
with interfaces.c.strings;
with unchecked_deallocation;
with ada.unchecked_conversion;
with Ada.Command_Line;
with Ada.Strings.Unbounded;
with Ada.Strings.Unbounded.Text_IO;
with ada.strings.fixed;
with ada.numerics.generic_elementary_functions;
with text_io;
procedure fonttf is
use Ada.Strings.Unbounded;
use Ada.Strings.Unbounded.Text_IO;
use text_io;
use pngloader;
use matutils;
use interfaces.c;
use interfaces.c.strings;
use glext;
use glext.pointers;
use glext.binding;
use gl;
use gl.binding;
use gl.pointers;
procedure myassert(
condition : boolean;
flag: integer:=0;
msg: string := ""
) is
begin
if condition=false then
put("ASSERTION Failed! ");
if flag /= 0 then
put( "@ " & integer'image(flag) &" : " );
end if;
put_line(msg);
new_line;
raise program_error;
end if;
end myassert;
------------------ begin los calculator specific data
b1push, b2push, b3push : boolean := false;
type vec3 is array(1..3) of float;
mainWindow : access SDL_Window;
mainGLContext : SDL_GLContext;
contextFlags : sdl_windowflags;
Nwid,Nhit,Mwid,Mhit,Wwid,Whit, Fwid, Fhit : aliased interfaces.c.int;
numkeys : aliased glint;
--subtype keyindex is interfaces.c.int range 0..511;
--type keyarraytype is array(keyindex) of Uint8;
key_map : access sdl.keyarraytype;
pmvp : chars_ptr := new_string("MVP"&ascii.nul);
pmyts : chars_ptr := new_string("myTextureSampler"&ascii.nul);
vertbuff, uvbuff, elembuff, rgbbuff, vertexarrayid : gluint;
matrixid, uniftex : glint;
picttexshadid,
btnup_texid, btndn_texid,
floor_texid : gluint := 0;
-- virtual screen: (x,z) in [-1,+1]
-- Button locations
-- (x,?,z) have origin @ center...
-- increasing rightward, downward
bdx: constant float := 0.05; --0.1;
bdz: constant float := 0.05;
b1x: constant float := -0.92;
b1z: constant float := -0.68;
b2x: constant float := -0.92;
b2z: constant float := -0.48;
b3x: constant float := -0.92;
b3z: constant float := -0.18;
opict: pictobj.pictangle;
package fmath is new
Ada.Numerics.generic_elementary_functions( float );
use fmath;
package myint_io is new text_io.integer_io(integer);
onepi : constant float := 3.14159_26535_89793;
halfpi : constant float := onepi/2.0;
fourthpi : constant float := onepi/4.0;
twopi : constant float := onepi*2.0;
deg2rad : constant float := onepi/180.0;
rad2deg : constant float := 180.0/onepi;
userexit, help : boolean := false;
procedure InitSDL( width, height : glint; flags:Uint32; name: string ) is
profile, compflag,
major, minor,
error, cver : interfaces.c.int;
bresult : SDL_bool;
compiled, linked : aliased SDL_version;
pms : char_array := To_C("GL_ARB_multisample");
psampl : aliased glint;
begin
-- Careful! Only initialize what we use (otherwise exe won't run):
error := SDL_Init(SDL_INIT_TIMER or SDL_INIT_EVENTS or SDL_INIT_VIDEO);
---------- begin 14feb15 insert -----------------------------------------
SDL_SOURCEVERSION( compiled'access );
put_line("We compiled against SDL version "
&Uint8'image(compiled.major)&"."
&Uint8'image(compiled.minor)&"."
&Uint8'image(compiled.patch) );
cver := SDL_COMPILEDVERSION;
put_line("SDL_compiledversion="&glint'image(cver));
SDL_GetVersion( linked'access );
put_line("We linked against SDL version "
&Uint8'image(linked.major)&"."
&Uint8'image(linked.minor)&"."
&Uint8'image(linked.patch) );
---------- end 14feb15 insert ----------------------------------------
bresult := SDL_SetHint( SDL_HINT_RENDER_VSYNC, "1" );
myassert( bresult = SDL_TRUE ,1002 );
bresult := SDL_SetHint( SDL_HINT_RENDER_SCALE_QUALITY, "1" );
myassert( bresult = SDL_TRUE ,1003 );
--// Turn on double buffering.
error := SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
myassert( error = 0 ,1004 );
error := SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
myassert( error = 0 ,1005 );
error := SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
myassert( error = 0 );
error := SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
myassert( error = 0 ,1006 );
error := SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
myassert( error = 0 ,1007 );
error := SDL_GL_SetAttribute( SDL_GL_CONTEXT_PROFILE_MASK,
SDL_GL_CONTEXT_PROFILE_CORE );
myassert( error = 0 ,1008 );
-- Note that OSX currently requires the forward_compatible flag!
error := SDL_GL_SetAttribute( SDL_GL_CONTEXT_FLAGS,
SDL_GL_CONTEXT_FORWARD_COMPATIBLE_FLAG );
myassert( error = 0 ,1009 );
mainWindow := SDL_CreateWindow( To_C(name,true) ,
SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
width, height, flags);
mainGLContext := SDL_GL_CreateContext(mainWindow);
error := SDL_GL_MakeCurrent( mainWindow, mainGLContext );
myassert( error = 0 ,1010 );
-- This next section is ugly...
---------------------------------------------------------------------
--this FTN must be called AFTER context is created and made current:
if SDL_TRUE = sdl_gl_extensionsupported(pms) then
-- If we get here, multisamples are supported...
-- so reduce aliasing by enabling multisamples:
put_line("MultSample is supported");
error := SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 4);
myassert( error = 0 ,1011 );
SDL_GL_DeleteContext(mainGLContext);
SDL_DestroyWindow(mainWindow);
mainWindow := SDL_CreateWindow( To_C(name,true) ,
SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
width, height, flags);
mainGLContext := SDL_GL_CreateContext(mainWindow);
error := SDL_GL_MakeCurrent( mainWindow, mainGLContext );
myassert( error = 0 ,1012 );
---------------------------------------------------------------------
error := SDL_GL_GetAttribute(SDL_GL_MULTISAMPLESAMPLES,psampl'access);
myassert( error = 0 ,1013 );
put_line("psampl="&glint'image(psampl)); -- 4
---------------------------------------------------------------------
else
put_line("MultSample is NOT supported");
end if;
glgetintegerv(gl_major_version, major'address);
glgetintegerv(gl_minor_version, minor'address);
put_line("ogl-version-query:"&glint'image(major)&":"&glint'image(minor));
glGetIntegerv(GL_CONTEXT_PROFILE_MASK, profile'address);
if( profile = GL_CONTEXT_CORE_PROFILE_BIT ) then
put_line("ogl-query: Core Profile");
end if;
-- OSX currently requires the forward_compatible flag!
glGetIntegerv(GL_CONTEXT_FLAGS, compflag'address);
if( compflag = GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT ) then
put_line("ogl-query: Forward-Compatible bit is set");
end if;
end InitSDL;
MVP, ModelMatrix, ViewMatrix, ProjectionMatrix
: mat44 := identity;
procedure updateMVP is -- only call once unless change in aspect ratio
xlook, ylook, zlook, xlk,ylk,zlk, xrt,yrt,zrt, xup,yup,zup : float;
xme,yme,zme : float;
fovdeg : constant float := 45.0;
fovrad : constant float := fovdeg*deg2rad;
-- distance from eye so FOV encompasses proper field:
eyeradius : constant float := 1.0 / fmath.tan(fovrad/2.0);
horiAng : constant float := onepi; --0.0;
near : constant float := 0.1;
far : constant float := 100.0;
focus : constant vec3 := (0.0, -1.0, 0.0);
eyepos: constant vec3 := (0.0, eyeradius-1.0 , 0.0);
look : constant vec3 :=
( focus(1)-eyepos(1), focus(2)-eyepos(2), focus(3)-eyepos(3) );
vertAng : constant float := fmath.arctan( look(2), look(3) );
begin
ModelMatrix:=identity;
xme:=eyepos(1);
yme:=eyepos(2);
zme:=eyepos(3);
-- look direction:
xlook := fmath.cos(vertang)*fmath.sin(horiang);
ylook := fmath.sin(vertang);
zlook := fmath.cos(vertang)*fmath.cos(horiang);
xlk := xme+xlook;
ylk := yme+ylook;
zlk := zme+zlook;
-- Right unit-Direction
xrt:= fmath.sin(horiang-halfpi);
yrt:= 0.0;
zrt:= fmath.cos(horiang-halfpi);
-- calculate UP unit-Direction
cross( xrt,yrt,zrt, xlook,ylook,zlook, xup,yup,zup );
perspective(ProjectionMatrix, fovdeg, 1.0, near, far);
lookat(ViewMatrix, xme,yme,zme, xlk,ylk,zlk, xup,yup,zup );
MVP:=ModelMatrix;
matXmat(MVP,ViewMatrix);
matXmat(MVP,ProjectionMatrix);
end updateMVP;
procedure release_textures is -- prepare to close down
begin
glext.binding.glDeleteBuffers(1, vertbuff'address);
glext.binding.glDeleteBuffers(1, rgbbuff'address);
glext.binding.glDeleteBuffers(1, uvbuff'address);
glext.binding.glDeleteBuffers(1, elembuff'address);
gldeletetextures(1, floor_texid'address);
gldeletetextures(1, btnup_texid'address);
gldeletetextures(1, btndn_texid'address);
glext.binding.glDeleteProgram( picttexshadid );
glext.binding.glDeleteVertexArrays(1, vertexarrayid'address);
end release_textures;
procedure setup_textures is -- prepare dungeon textures
begin
glgenvertexarrays(1, vertexarrayid'address );
glbindvertexarray(vertexarrayid);
glactivetexture(gl_texture0);
glgenbuffers(1, vertbuff'address);
glgenbuffers(1, rgbbuff'address);
glgenbuffers(1, uvbuff'address);
glgenbuffers(1, elembuff'address);
picttexshadid := loadshaders("./data/texobj.vs", "./data/texobj.fs");
matrixid := glgetuniformlocation(picttexshadid, pmvp);
uniftex := glgetuniformlocation(picttexshadid, pmyts);
--floor_texid:= loadPng(mirror,"data/white.png");
floor_texid:= loadPng(mirror,"data/politicalWorldB.png");
btnup_texid:= loadPng(mirror,"data/btnDn.png");
btndn_texid:= loadPng(mirror,"data/btnUp.png");
end setup_textures;
procedure first_prep is -- main program setup
FileId : text_io.File_Type;
ret : glint;
current: aliased SDL_DisplayMode;
begin
------- begin SDL prep ---------------------------------------------------
ret := SDL_Init(SDL_INIT_VIDEO or SDL_INIT_EVENTS or SDL_INIT_TIMER);
for i in 1..SDL_GetNumVideoDisplays loop
ret := SDL_GetCurrentDisplayMode(i-1, current'access);
if ret /= 0 then
put_line("Could not get display mode");
end if;
end loop;
Mwid := current.w;
Mhit := current.h;
contextFlags :=
SDL_WINDOW_SHOWN
or SDL_WINDOW_OPENGL
or SDL_WINDOW_RESIZABLE
or SDL_WINDOW_ALLOW_HIGHDPI;
Wwid:=960;
Whit:=700;
InitSDL(Wwid, Whit, contextFlags, "font-ttf <h>=help <esc>=quit");
-- prepare font -------------
stex.InitFont ( "data/AnonymousPro-Regular.ttf" );
stex.setColor( (1.0, 1.0, 1.0, 1.0) ); --white
--stex.setColor( (0.5, 0.5, 0.5, 1.0) ); --gray
--stex.setColor( (0.0, 0.0, 0.0, 1.0) ); --black
stex.setTextWindowSize(Wwid,Whit);
put_line( "Window: wid-X-hit :"
& interfaces.c.int'image(Wwid)&" X "
& interfaces.c.int'image(Whit) );
SDL_GL_GetDrawableSize( mainWindow, Fwid'access, Fhit'access );
glViewport(0,0,Fwid,Fhit);
put_line( "Drawable: Fwid-X-Fhit : "
&interfaces.c.int'image(Fwid)&" X "
& interfaces.c.int'image(Fhit) );
key_map := sdl_getkeyboardstate(numkeys'access);
--put_line("...numkeys=" & interfaces.c.int'image(numkeys) ); -- 512
--myassert( sdl.keyrange'last <= numkeys );
setup_textures;
glClearColor(0.4,0.4,0.4,1.0);
glenable(gl_depth_test);
gldepthfunc( gl_lequal );
glenable( gl_cull_face );
glEnable(GL_MULTISAMPLE);
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST);
end first_prep;
procedure Draw is
dh: constant float := 0.077; --horizontal offset btn
szhelp: constant float := 0.5;
szbtn: constant float := 0.2;
l1x: constant float :=0.5*(b1x+1.0);
l1z: constant float :=1.0-0.5*(b1z+1.0)+0.05;
l3x: constant float :=0.5*(b3x+1.0);
l3z: constant float :=1.0-0.5*(b3z+1.0)+0.05;
procedure putBtn(
x,z : float;
push: boolean;
wide: boolean := false ) is
dx: float:= bdx;
begin
if wide then dx:=2.0*bdx; end if;
pictobj.setrect(opict,
x, -1.0, z,
dx, 0.0001, bdz );
if push then
glBindTexture(GL_TEXTURE_2D, btndn_texid);
else
glBindTexture(GL_TEXTURE_2D, btnup_texid);
end if;
pictobj.draw(opict, vertbuff, uvbuff, elembuff);
end putBtn;
hpos: constant float := 0.3;
vpos: float := 0.7;
procedure incline(s: string; sz: float; md: integer:=0) is
dv: constant float := 0.05; --reasonable vertical spacing
begin
stex.print2d(s, hpos, vpos, sz,md);
vpos:=vpos-dv;
end incline;
begin
glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT);
glUseProgram(pictTexShadID);
glUniformMatrix4fv(MatrixID, 1, GL_FALSE, MVP(1,1)'address);
glUniform1i(uniftex,0);
pictobj.setrect(opict,
0.0, -1.0, 0.0,
1.0, 0.0001, 1.0 );
glBindTexture(GL_TEXTURE_2D, floor_texid);
pictobj.draw(opict, vertbuff, uvbuff, elembuff);
if help then -- display only help messages:
incline("font-ttf Help",szhelp);
incline(" <esc> => quit",szhelp);
incline(" <h> => toggles this screen",szhelp);
incline("font: AnonymousPro-Regular.ttf",szhelp);
incline("abcdefg",szhelp);
incline("ABCDEFG",szhelp);
incline("abcdefg",szhelp);
else -- display normal table dialog
-- (x,?,z) have origin @ center...
-- increasing rightward, downward
putBtn(b1x,b1z,b1push);
putBtn(b2x,b2z,b2push);
putBtn(b3x,b3z,b3push);
------------------- text output ------------------------------------
-- all text comes after other drawings -----------------------------
--------------------------------------------------------------------
--btn labels AFTER all btns
stex.print2d("radio", l1x, l1z, szbtn);
stex.print2d("toggle", l3x, l3z, szbtn);
-- text size r, g, b
incline("blendmode=0", 0.5,0);
incline("blendmode=1", 0.5,1);
incline("blendmode=2", 0.5,2);
incline("blendmode=3", 0.5,3);
incline("blendmode=4", 0.5,4);
incline("blendmode=5", 0.5,5);
incline("blendmode=6", 0.5,6);
--NOTE: high contrast modes 3,6 show aliasing!
if b1push then
incline("radio btn #1, blendmode=6",0.5,6);
elsif b2push then
incline("radio btn #2, blendmode=6",0.5,6);
end if;
if b3push then
incline("btn #3 down, blendmode=3",0.5,3);
else
incline("btn #3 up, blendmode=3",0.5,3);
end if;
end if;
end Draw;
dwell : constant float := 0.5;
ndwell : constant float := 0.2;
keytime: float := 0.0;
numbering: boolean:=false;
procedure handleKeys(currentTime: float) is
ktime: float := 0.0;
begin
if(key_map( SDL_SCANCODE_ESCAPE )/=0) then userexit:=true; end if;
if( key_map( SDL_SCANCODE_Q ) /= 0 ) then userexit:=true; end if;
ktime:=currentTime-keytime;
if( key_map( SDL_SCANCODE_H ) /= 0 ) then --Help
if ktime>dwell then
help:= not help;
keytime:=currentTime;
end if;
end if;
end handleKeys;
function odd( i: integer ) return boolean is
begin
return ( i mod 2 = 1 );
end odd;
function bitmatch( x, y : integer ) return boolean is
result : boolean := false;
a : integer := x;
b : integer := y;
begin
for i in 1..32 loop
if ( odd(a) and odd(b) ) then result:=true; end if;
a:=a/2;
b:=b/2;
end loop;
return result;
end;
state,ileft,iright: integer;
mousex, mousey : aliased interfaces.c.int;
mousestate : Uint32;
prevTime : float := 0.0;
procedure handle_mouse_click( nowTime, Wwid, Whit : float ) is
fmx : float := float(mousex)/Wwid;
fmy : float := float(mousey)/Whit;
ox : constant float := 0.07; --0.05;
oz : constant float := -0.01;
Ok,drc,
b1,b2,b3,b4,b5,b6,c7: boolean := false;
begin
--put_line("entering mouse_click");
fmx := -1.0 + 2.0*fmx;
fmy := -1.0 + 2.0*fmy;
if( (nowTime-prevTime) > 0.5 ) then
prevTime := nowTime;
b1 := (abs(fmx-b1x)<bdx) and (abs(fmy-b1z)<bdz);
b2 := (abs(fmx-b2x)<bdx) and (abs(fmy-b2z)<bdz);
b3 := (abs(fmx-b3x)<bdx) and (abs(fmy-b3z)<bdz);
end if;
--radio Btn group
if b1 then
b1push:=true;
b2push:=false;
elsif b2 then
b2push:=true;
b1push:=false;
end if;
--toggle Btn
if b3 then
b3push:=not b3push;
end if;
end handle_mouse_click;
currentTime : float;
test_event: aliased SDL_Event;
begin -- font-ttf ===================================================
first_prep; -- init graphics/sound, defines fnum, flev
updateMVP; --just once
-- main event loop begin: --------------------------------------------
while not userexit loop
SDL_PumpEvents;
key_map := sdl_getkeyboardstate(numkeys'access);
handleKeys( float(sdl_getticks)/1000.0 );
--pollEvent returns 0 if no [new] event pending:
if SDL_PollEvent(test_event'access)>0 then
if test_event.typ = SDL_WindowEvent then
-- note unusual syntax due to quirk in binding
-- caused by the case-insensitivity of Ada:
if test_event.window.event=sdl_windowevent_close then
userexit:=true;
end if; --user hits closeWindow "x"
end if;
end if;
-------- here we handle resizing window ----------------------
SDL_GetWindowSize( mainWindow, Nwid'access, Nhit'access );
if( (Nwid /= Wwid) or (Nhit /= Whit) ) then
wwid:=nwid; whit:=nhit;
SDL_GL_GetDrawableSize( mainWindow, Fwid'access, Fhit'access );
glViewport(0,0,Fwid,Fhit);
stex.setTextWindowSize(Wwid,Whit);
end if;
currentTime := float(sdl_getticks)/1000.0;
MouseState:=SDL_GetMouseState(mousex'access,mousey'access);
state := integer( MouseState );
ileft := integer( SDL_BUTTON(1) );
iright:= integer( SDL_BUTTON(3) );
if
bitmatch(state, ileft) or
bitmatch(state, iright) or
( key_map( SDL_SCANCODE_RETURN ) /= 0 )
then
handle_mouse_click(currentTime, float(Wwid), float(Whit) );
end if;
Draw; -- main drawing here ###################################
SDL_GL_SwapWindow( mainWindow );
end loop; --------------------- main event loop end -------------------
release_textures;
stex.CloseFont;
SDL_GL_DeleteContext(mainGLContext);
SDL_DestroyWindow(mainWindow);
SDL_Quit;
end fonttf;