1 /* Copyright (C) 2021-2023 Harry Godden (hgn) - All Rights Reserved */
6 * 1. layout is defined by subdividing
7 * 2. a parent node should never be resized by the content after creation
8 * 3. when the ui is in an interactive state, no controls should ever move
9 * 4. controls directly reference a memory location and use that as their
11 * 5. a maximum of ONE control per memory location can be drawn at any given
20 #include "vg/vg_tex.h"
21 #include "vg/vg_shader.h"
24 typedef ui_px ui_rect
[4];
25 typedef struct ui_vert ui_vert
;
32 /* Relative to cursor p0 */
35 k_ui_align_lwr
= 0xff,
36 k_ui_align_left
= 0x0000| 0x00,
37 k_ui_align_right
= 0x0000| 0x01,
38 k_ui_align_center
= 0x0000| 0x02,
40 k_ui_align_middle
= 0x0100,
41 k_ui_align_middle_left
= 0x0100| 0x00,
42 k_ui_align_middle_right
= 0x0100| 0x01,
43 k_ui_align_middle_center
= 0x0100| 0x02,
45 k_ui_align_bottom
= 0x0200,
46 k_ui_align_bottom_left
= 0x0200| 0x00,
47 k_ui_align_bottom_right
= 0x0200| 0x01,
48 k_ui_align_bottom_center
= 0x0200| 0x02,
60 enum ui_scheme_colour
{
75 typedef u32 ui_scheme
[8*4];
77 #define UI_RGB( STDHEX ) 0xff000000 |\
78 ((STDHEX&0x000000ff)<<16) |\
79 ((STDHEX&0x0000ff00) ) |\
80 ((STDHEX&0x00ff0000)>>16)
82 #define UI_TEXTBOX_MULTILINE 0x1
83 #define UI_TEXTBOX_WRAP 0x2
84 #define UI_TEXTBOX_AUTOFOCUS 0x4
86 #define UI_MODAL_OK 0x0
87 #define UI_MODAL_GOOD 0x1
88 #define UI_MODAL_BAD 0x2
89 #define UI_MODAL_WARN 0x3
90 #define UI_MODAL_TYPE_BITS 0x3
92 #define UI_MOUSE_LEFT (SDL_BUTTON(SDL_BUTTON_LEFT))
93 #define UI_MOUSE_RIGHT (SDL_BUTTON(SDL_BUTTON_RIGHT))
94 #define UI_MOUSE_MIDDLE (SDL_BUTTON(SDL_BUTTON_MIDDLE))
97 struct ui_vert
*vertex_buffer
;
99 u32 max_verts
, max_indices
,
100 cur_vert
, cur_indice
,
101 vert_start
, indice_start
;
104 void *focused_control_id
; /* uses the memory location of various locking
107 struct ui_dropdown_value
{
113 u32 focused_control_hit
;
114 enum ui_control_type
{
116 k_ui_control_textbox
,
117 k_ui_control_dropdown
,
120 focused_control_type
;
124 int cursor_user
, cursor_pos
;
128 struct ui_textbox_callbacks
{
129 void (*enter
)( char *, u32
),
130 (*up
)( char *, u32
),
131 (*down
)( char *, u32
),
132 (*change
)( char *, u32
);
139 struct ui_dropdown_opt
{
153 struct ui_modal_callbacks
{
160 GLuint tex_glyphs
, vao
, vbo
, ebo
;
162 ui_px mouse
[2], mouse_click
[2];
164 u32 ignore_input_frames
;
167 ui_rect click_fader
, click_fader_end
;
168 float click_fade_opacity
;
180 SDL_Cursor
*cursor_map
[ k_ui_cursor_max
];
184 [ k_ui_bg
+0 ] = UI_RGB( 0x1d2021 ),
185 [ k_ui_bg
+1 ] = UI_RGB( 0x282828 ),
186 [ k_ui_bg
+2 ] = UI_RGB( 0x3c3836 ),
187 [ k_ui_bg
+3 ] = UI_RGB( 0x504945 ),
188 [ k_ui_bg
+4 ] = UI_RGB( 0x665c54 ),
189 [ k_ui_bg
+5 ] = UI_RGB( 0x7c6f64 ),
190 [ k_ui_bg
+6 ] = UI_RGB( 0x928374 ),
191 [ k_ui_bg
+7 ] = UI_RGB( 0xa89984 ),
193 [ k_ui_fg
+0 ] = UI_RGB( 0xebdbb2 ),
194 [ k_ui_fg
+1 ] = UI_RGB( 0xfbf1c7 ),
195 [ k_ui_fg
+2 ] = UI_RGB( 0xd5c4a1 ),
196 [ k_ui_fg
+3 ] = UI_RGB( 0xbdae93 ),
197 [ k_ui_fg
+4 ] = UI_RGB( 0xa89984 ),
198 [ k_ui_fg
+5 ] = UI_RGB( 0x000000 ),
199 [ k_ui_fg
+6 ] = UI_RGB( 0x000000 ),
200 [ k_ui_fg
+7 ] = UI_RGB( 0x000000 ),
202 [ k_ui_red
] = UI_RGB( 0xcc241d ),
203 [ k_ui_orange
] = UI_RGB( 0xd65d0e ),
204 [ k_ui_yellow
] = UI_RGB( 0xd79921 ),
205 [ k_ui_green
] = UI_RGB( 0x98971a ),
206 [ k_ui_aqua
] = UI_RGB( 0x689d6a ),
207 [ k_ui_blue
] = UI_RGB( 0x458588 ),
208 [ k_ui_purple
] = UI_RGB( 0xb16286 ),
209 [ k_ui_gray
] = UI_RGB( 0x928374 ),
210 [ k_ui_red
+ k_ui_brighter
] = UI_RGB( 0xfb4934 ),
211 [ k_ui_orange
+ k_ui_brighter
] = UI_RGB( 0xfe8019 ),
212 [ k_ui_yellow
+ k_ui_brighter
] = UI_RGB( 0xfabd2f ),
213 [ k_ui_green
+ k_ui_brighter
] = UI_RGB( 0xb8bb26 ),
214 [ k_ui_aqua
+ k_ui_brighter
] = UI_RGB( 0x8ec07c ),
215 [ k_ui_blue
+ k_ui_brighter
] = UI_RGB( 0x83a598 ),
216 [ k_ui_purple
+ k_ui_brighter
] = UI_RGB( 0xd3869b ),
217 [ k_ui_gray
+ k_ui_brighter
] = UI_RGB( 0xa89984 ),
221 static struct vg_shader _shader_ui
=
229 "layout (location=0) in vec2 a_co;"
230 "layout (location=1) in vec2 a_uv;"
231 "layout (location=2) in vec4 a_colour;"
234 "out vec2 aTexCoords;"
240 "gl_Position = vec4( uPv * vec3( a_co, 1.0 ), 1.0 );"
241 "aTexCoords = a_uv * 0.0078125;"
242 "aColour = a_colour;"
251 "uniform sampler2D uTexGlyphs;"
252 "out vec4 FragColor;"
254 "in vec2 aTexCoords;"
259 "vec2 rand_hash22( vec2 p )"
261 "vec3 p3 = fract(vec3(p.xyx) * 213.8976123);"
262 "p3 += dot(p3, p3.yzx+19.19);"
263 "return fract(vec2((p3.x + p3.y)*p3.z, (p3.x+p3.z)*p3.y));"
268 "vec4 diffuse = aColour;"
270 "if( diffuse.a == 0.0 )"
272 "diffuse.a = texture( uTexGlyphs, aTexCoords ).r;"
275 "FragColor = diffuse;"
280 static struct vg_shader _shader_ui_image
=
282 .name
= "[vg] ui_image",
288 "layout (location=0) in vec2 a_co;"
289 "layout (location=1) in vec2 a_uv;"
290 "layout (location=2) in vec4 a_colour;"
293 "out vec2 aTexCoords;"
299 "gl_Position = vec4( uPv * vec3( a_co, 1.0 ), 1.0 );"
300 "aTexCoords = a_uv * 0.0078125;"
301 "aColour = a_colour;"
310 "uniform sampler2D uTexImage;"
311 "out vec4 FragColor;"
313 "in vec2 aTexCoords;"
319 "vec4 colour = texture( uTexImage, aTexCoords );"
320 "FragColor = colour;"
324 #define UI_GLYPH_SPACING_X 8
326 VG_STATIC
void _vg_ui_init(void)
328 if( !vg_shader_compile( &_shader_ui
) ||
329 !vg_shader_compile( &_shader_ui_image
) )
330 vg_fatal_error( "Failed to compile ui shader" );
334 * ----------------------------------------
337 vg_ui
.max_indices
= 20000;
338 vg_ui
.max_verts
= 30000;
340 /* Generate the buffer we are gonna be drawing to */
341 glGenVertexArrays( 1, &vg_ui
.vao
);
342 glGenBuffers( 1, &vg_ui
.vbo
);
343 glGenBuffers( 1, &vg_ui
.ebo
);
345 glBindVertexArray( vg_ui
.vao
);
346 glBindBuffer( GL_ARRAY_BUFFER
, vg_ui
.vbo
);
348 glBufferData( GL_ARRAY_BUFFER
,
349 vg_ui
.max_verts
* sizeof( struct ui_vert
),
350 NULL
, GL_DYNAMIC_DRAW
);
351 glBindVertexArray( vg_ui
.vao
);
353 glBindBuffer( GL_ELEMENT_ARRAY_BUFFER
, vg_ui
.ebo
);
354 glBufferData( GL_ELEMENT_ARRAY_BUFFER
,
355 vg_ui
.max_indices
* sizeof( u16
), NULL
, GL_DYNAMIC_DRAW
);
360 u32
const stride
= sizeof( struct ui_vert
);
363 glVertexAttribPointer( 0, 2, GL_SHORT
, GL_FALSE
, stride
,
364 (void *)offsetof( struct ui_vert
, co
) );
365 glEnableVertexAttribArray( 0 );
368 glVertexAttribPointer( 1, 2, GL_UNSIGNED_BYTE
, GL_FALSE
, stride
,
369 (void *)offsetof( struct ui_vert
, uv
) );
370 glEnableVertexAttribArray( 1 );
373 glVertexAttribPointer( 2, 4, GL_UNSIGNED_BYTE
, GL_TRUE
, stride
,
374 (void *)offsetof( struct ui_vert
, colour
) );
375 glEnableVertexAttribArray( 2 );
379 /* Alloc RAM default context */
380 u32 vert_size
= vg_ui
.max_verts
*sizeof(struct ui_vert
),
381 inds_size
= vg_align8( vg_ui
.max_indices
*sizeof(u16
) );
383 vg_ui
.vertex_buffer
= vg_linear_alloc( vg_mem
.rtmemory
, vert_size
);
384 vg_ui
.indice_buffer
= vg_linear_alloc( vg_mem
.rtmemory
, inds_size
);
387 * -----------------------------------------------------
390 /* Load default font */
392 #include "vg/vg_pxfont_thin.h"
395 u32 pixels
= 0, total
= 256*256, data
= 0;
398 while( pixels
< total
){
399 for( int b
= 31; b
>= 0; b
-- ){
400 image
[ pixels
++ ] = (compressed
[data
] & (0x1u
<< b
))? 0xffu
: 0x00u
;
402 if( pixels
>= total
){
410 glGenTextures( 1, &vg_ui
.tex_glyphs
);
411 glBindTexture( GL_TEXTURE_2D
, vg_ui
.tex_glyphs
);
412 glTexImage2D( GL_TEXTURE_2D
, 0, GL_R8
, 256, 256, 0,
413 GL_RED
, GL_UNSIGNED_BYTE
, image
);
416 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_WRAP_S
, GL_CLAMP_TO_EDGE
);
417 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_WRAP_T
, GL_CLAMP_TO_EDGE
);
418 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_MIN_FILTER
, GL_NEAREST
);
419 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_MAG_FILTER
, GL_NEAREST
);
423 * ---------------------------------------------------------------
426 vg_ui
.cursor_map
[ k_ui_cursor_default
] =
427 SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_ARROW
);
428 vg_ui
.cursor_map
[ k_ui_cursor_hand
] =
429 SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_HAND
);
430 vg_ui
.cursor_map
[ k_ui_cursor_ibeam
] =
431 SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_IBEAM
);
439 static void rect_copy( ui_rect a
, ui_rect b
)
441 for( int i
=0; i
<4; i
++ )
445 VG_STATIC
void ui_flush( enum ui_shader shader
)
447 u32 vertex_offset
= vg_ui
.vert_start
*sizeof(ui_vert
),
448 vertex_count
= vg_ui
.cur_vert
-vg_ui
.vert_start
,
449 vertex_size
= vertex_count
*sizeof(ui_vert
),
451 indice_offset
= vg_ui
.indice_start
*sizeof(u16
),
452 indice_count
= vg_ui
.cur_indice
-vg_ui
.indice_start
,
453 indice_size
= indice_count
* sizeof(u16
);
455 if( !vertex_size
|| !indice_size
)
458 glBindVertexArray( vg_ui
.vao
);
459 glBindBuffer( GL_ARRAY_BUFFER
, vg_ui
.vbo
);
460 glBufferSubData( GL_ARRAY_BUFFER
, vertex_offset
, vertex_size
,
461 vg_ui
.vertex_buffer
+vg_ui
.vert_start
);
463 glBindBuffer( GL_ELEMENT_ARRAY_BUFFER
, vg_ui
.ebo
);
464 glBufferSubData( GL_ELEMENT_ARRAY_BUFFER
, indice_offset
, indice_size
,
465 vg_ui
.indice_buffer
+vg_ui
.indice_start
);
467 glDisable( GL_DEPTH_TEST
);
468 glEnable( GL_BLEND
);
469 glBlendFunc( GL_SRC_ALPHA
, GL_ONE_MINUS_SRC_ALPHA
);
470 glBlendEquation( GL_FUNC_ADD
);
471 glDisable( GL_CULL_FACE
);
473 m3x3f view
= M3X3_IDENTITY
;
474 m3x3_translate( view
, (v3f
){ -1.0f
, 1.0f
, 0.0f
} );
475 m3x3_scale( view
, (v3f
){ 1.0f
/((float)vg
.window_x
*0.5f
),
476 -1.0f
/((float)vg
.window_y
*0.5f
), 1.0f
} );
478 if( shader
== k_ui_shader_colour
){
479 glUseProgram( _shader_ui
.id
);
481 glUniformMatrix3fv( glGetUniformLocation( _shader_ui
.id
, "uPv" ), 1,
482 GL_FALSE
, (float *)view
);
484 glActiveTexture( GL_TEXTURE0
);
485 glBindTexture( GL_TEXTURE_2D
, vg_ui
.tex_glyphs
);
486 glUniform1i( glGetUniformLocation( _shader_ui
.id
, "uTexGlyphs" ), 0 );
488 else if( shader
== k_ui_shader_image
){
489 glUseProgram( _shader_ui_image
.id
);
490 glUniformMatrix3fv( glGetUniformLocation( _shader_ui_image
.id
, "uPv" ), 1,
491 GL_FALSE
, (float *)view
);
492 glUniform1i( glGetUniformLocation(_shader_ui_image
.id
,"uTexImage"), 0 );
495 vg_fatal_error( "Invalid UI shader (%d)\n", shader
);
497 glDrawElements( GL_TRIANGLES
, indice_count
, GL_UNSIGNED_SHORT
,
498 (void *)(vg_ui
.indice_start
*sizeof(u16
)) );
500 glDisable( GL_BLEND
);
502 vg_ui
.indice_start
= vg_ui
.cur_indice
;
503 vg_ui
.vert_start
= vg_ui
.cur_vert
;
506 static void ui_fill_rect( ui_rect rect
, u32 colour
, ui_px uv
[4] )
508 /* this if far from ideal but stops us from crashing */
509 if( (vg_ui
.cur_vert
+ 4 > vg_ui
.max_verts
) ||
510 (vg_ui
.cur_indice
+ 6 > vg_ui
.max_indices
))
513 struct ui_vert
*vertices
= &vg_ui
.vertex_buffer
[ vg_ui
.cur_vert
];
514 u16
*indices
= &vg_ui
.indice_buffer
[ vg_ui
.cur_indice
];
516 for( int i
=0; i
<4; i
++ ){
517 vertices
[i
].colour
= colour
;
520 vertices
[0].co
[0] = rect
[0];
521 vertices
[0].co
[1] = rect
[1];
522 vertices
[0].uv
[0] = uv
[0];
523 vertices
[0].uv
[1] = uv
[1];
524 vertices
[1].co
[0] = rect
[0]+rect
[2];
525 vertices
[1].co
[1] = rect
[1];
526 vertices
[1].uv
[0] = uv
[2];
527 vertices
[1].uv
[1] = uv
[1];
528 vertices
[2].co
[0] = rect
[0]+rect
[2];
529 vertices
[2].co
[1] = rect
[1]+rect
[3];
530 vertices
[2].uv
[0] = uv
[2];
531 vertices
[2].uv
[1] = uv
[3];
532 vertices
[3].co
[0] = rect
[0];
533 vertices
[3].co
[1] = rect
[1]+rect
[3];
534 vertices
[3].uv
[0] = uv
[0];
535 vertices
[3].uv
[1] = uv
[3];
536 u16 ind_start
= vg_ui
.cur_vert
;
538 u16 start
= vg_ui
.cur_vert
;
539 u32 mesh
[] = { 0,2,1, 0,3,2 };
541 for( u32 i
=0; i
<vg_list_size(mesh
); i
++ ){
542 indices
[i
] = start
+mesh
[i
];
545 vg_ui
.cur_indice
+= 6;
549 static void ui_fill( ui_rect rect
, u32 colour
)
551 ui_fill_rect( rect
, colour
, (ui_px
[4]){ 4,4,4,4 } );
554 static void ui_outline( ui_rect rect
, ui_px thickness
, u32 colour
)
556 /* this if far from ideal but stops us from crashing */
557 if( (vg_ui
.cur_vert
+ 8 > vg_ui
.max_verts
) ||
558 (vg_ui
.cur_indice
+ 24 > vg_ui
.max_indices
))
561 struct ui_vert
*vertices
= &vg_ui
.vertex_buffer
[ vg_ui
.cur_vert
];
562 u16
*indices
= &vg_ui
.indice_buffer
[ vg_ui
.cur_indice
];
564 for( int i
=0; i
<8; i
++ ){
565 vertices
[i
].uv
[0] = 4;
566 vertices
[i
].uv
[1] = 4;
567 vertices
[i
].colour
= colour
;
570 vertices
[0].co
[0] = rect
[0];
571 vertices
[0].co
[1] = rect
[1];
572 vertices
[1].co
[0] = rect
[0]+rect
[2];
573 vertices
[1].co
[1] = rect
[1];
574 vertices
[2].co
[0] = rect
[0]+rect
[2];
575 vertices
[2].co
[1] = rect
[1]+rect
[3];
576 vertices
[3].co
[0] = rect
[0];
577 vertices
[3].co
[1] = rect
[1]+rect
[3];
578 vertices
[4].co
[0] = vertices
[0].co
[0]-thickness
;
579 vertices
[4].co
[1] = vertices
[0].co
[1]-thickness
;
580 vertices
[5].co
[0] = vertices
[1].co
[0]+thickness
;
581 vertices
[5].co
[1] = vertices
[1].co
[1]-thickness
;
582 vertices
[6].co
[0] = vertices
[2].co
[0]+thickness
;
583 vertices
[6].co
[1] = vertices
[2].co
[1]+thickness
;
584 vertices
[7].co
[0] = vertices
[3].co
[0]-thickness
;
585 vertices
[7].co
[1] = vertices
[3].co
[1]+thickness
;
587 u16 start
= vg_ui
.cur_vert
;
588 u32 mesh
[] = { 0,5,4, 0,1,5, 1,6,5, 1,2,6, 2,7,6, 2,3,7, 3,4,7, 3,0,4 };
590 for( u32 i
=0; i
<vg_list_size(mesh
); i
++ ){
591 indices
[i
] = start
+mesh
[i
];
594 vg_ui
.cur_indice
+= 24;
598 static void ui_split( ui_rect rect
,
599 enum ui_axis other
, ui_px width
, ui_px gap
,
600 ui_rect l
, ui_rect r
)
602 enum ui_axis dir
= other
^ 0x1;
604 if( width
< 0 ) width
= rect
[ 2+dir
] + width
;
607 rect_copy( rect
, temp
);
609 l
[ dir
] = temp
[ dir
];
610 r
[ dir
] = temp
[ dir
] + width
+ (gap
/2);
611 l
[ other
] = temp
[ other
];
612 r
[ other
] = temp
[ other
];
613 l
[ 2+dir
] = width
- (gap
/2);
614 r
[ 2+dir
] = temp
[ 2+dir
] - width
- (gap
/2);
615 l
[ 2+other
] = temp
[ 2+other
];
616 r
[ 2+other
] = temp
[ 2+other
];
619 static ui_px
ui_text_line_width( const char *str
);
621 static void ui_rect_center( ui_rect parent
, ui_rect rect
)
623 rect
[0] = parent
[0] + (parent
[2]-rect
[2])/2;
624 rect
[1] = parent
[1] + (parent
[3]-rect
[3])/2;
627 static void ui_fit_item( ui_rect rect
, ui_px size
[2], ui_rect d
)
629 i32 rp
= (i32
)rect
[2] * (i32
)size
[1],
630 rc
= (i32
)size
[0] * (i32
)rect
[3];
632 enum ui_axis dir
, other
;
633 if( rc
> rp
) dir
= k_ui_axis_h
;
634 else dir
= k_ui_axis_v
;
637 d
[2+dir
] = rect
[2+dir
];
638 d
[2+other
] = (rect
[2+dir
] * size
[other
]) / size
[dir
];
640 ui_rect_center( rect
, d
);
643 static void ui_split_ratio( ui_rect rect
, enum ui_axis dir
, float ratio
,
644 ui_px gap
, ui_rect l
, ui_rect r
)
646 ui_px width
= (float)rect
[ 2+(dir
^0x1) ] * ratio
;
647 ui_split( rect
, dir
, width
, gap
, l
, r
);
650 static void ui_rect_pad( ui_rect rect
, ui_px pad
[2] )
658 static ui_px
ui_text_line_width( const char *str
)
661 const char *_c
= str
;
664 while( (c
= *(_c
++)) ){
665 if( c
>= 32 ) length
++;
666 else if( c
== '\n' ) break;
672 static ui_px
ui_text_string_height( const char *str
)
675 const char *_c
= str
;
678 while( (c
= *(_c
++)) ){
679 if( c
== '\n' ) height
++;
685 static ui_px
ui_text_aligned_x( const char *str
, ui_rect rect
, ui_px scale
,
686 enum ui_align align
)
688 enum ui_align lwr
= k_ui_align_lwr
& align
;
689 if( lwr
== k_ui_align_left
){
693 ui_px width
= ui_text_line_width( str
) * scale
;
695 if( lwr
== k_ui_align_right
)
696 return rect
[0] + rect
[2]-width
;
698 return rect
[0] + (rect
[2]-width
)/2;
702 static ui_px
ui_min( ui_px a
, ui_px b
){ return a
<b
?a
:b
; }
703 static ui_px
ui_max( ui_px a
, ui_px b
){ return a
>b
?a
:b
; }
704 static ui_px
ui_clamp( ui_px a
, ui_px min
, ui_px max
)
706 return ui_min( max
, ui_max( a
, min
) );
709 static int ui_clip( ui_rect parent
, ui_rect child
, ui_rect clipped
)
711 ui_px parent_max
[2], child_max
[2];
712 parent_max
[0] = parent
[0]+parent
[2];
713 parent_max
[1] = parent
[1]+parent
[3];
714 child_max
[0] = child
[0]+child
[2];
715 child_max
[1] = child
[1]+child
[3];
717 clipped
[0] = ui_clamp( child
[0], parent
[0], parent_max
[0] );
718 clipped
[1] = ui_clamp( child
[1], parent
[1], parent_max
[1] );
719 clipped
[2] = ui_clamp( child_max
[0], parent
[0], parent_max
[0] );
720 clipped
[3] = ui_clamp( child_max
[1], parent
[1], parent_max
[1] );
722 if( clipped
[0] == clipped
[2] ||
723 clipped
[1] == clipped
[3] )
726 clipped
[2] -= clipped
[0];
727 clipped
[3] -= clipped
[1];
732 static int ui_inside_rect( ui_rect rect
, ui_px co
[2] )
734 if( co
[0] >= rect
[0] &&
736 co
[0] < rect
[0]+rect
[2] &&
737 co
[1] < rect
[1]+rect
[3] )
745 static int ui_click_down( u32 mask
)
747 if( vg_ui
.ignore_input_frames
) return 0;
748 if( (vg_ui
.mouse_state
[0] & mask
) &&
749 !(vg_ui
.mouse_state
[1] & mask
) )
755 static int ui_clicking( u32 mask
)
757 if( vg_ui
.ignore_input_frames
) return 0;
758 return vg_ui
.mouse_state
[0] & mask
;
761 static int ui_click_up( u32 mask
)
763 if( vg_ui
.ignore_input_frames
) return 0;
764 if( (vg_ui
.mouse_state
[1] & mask
) &&
765 !(vg_ui
.mouse_state
[0] & mask
) )
771 static void ui_prerender(void)
774 vg_ui
.mouse_state
[1] = vg_ui
.mouse_state
[0];
775 vg_ui
.mouse_state
[0] = SDL_GetMouseState( &x
, &y
);
780 vg_ui
.cur_indice
= 0;
781 vg_ui
.vert_start
= 0;
782 vg_ui
.indice_start
= 0;
783 vg_ui
.focused_control_hit
= 0;
784 vg_ui
.cursor
= k_ui_cursor_default
;
785 vg_ui
.wants_mouse
= 0;
787 if( vg_ui
.ignore_input_frames
){
788 vg_ui
.ignore_input_frames
--;
792 if( ui_click_down(UI_MOUSE_LEFT
)||ui_click_down(UI_MOUSE_MIDDLE
) ){
793 vg_ui
.mouse_click
[0] = vg_ui
.mouse
[0];
794 vg_ui
.mouse_click
[1] = vg_ui
.mouse
[1];
798 static u32
ui_colour( enum ui_scheme_colour id
)
800 return vg_ui
.scheme
[ id
];
803 /* get an appropriately contrasting colour given the base */
804 static u32
ui_colourcont( enum ui_scheme_colour id
)
806 if ( id
< k_ui_bg
+6 ) return ui_colour( k_ui_fg
);
807 else if( id
< k_ui_fg
) return ui_colour( k_ui_bg
+1 );
808 else if( id
< k_ui_hue
) return ui_colour( k_ui_bg
+3 );
809 else if( id
< k_ui_red
+k_ui_brighter
) return ui_colour( k_ui_fg
);
810 else return ui_colour( k_ui_fg
+1 );
813 static void ui_hex_to_norm( u32 hex
, v4f norm
)
815 norm
[0] = ((hex
) & 0xff);
816 norm
[1] = ((hex
>>8 ) & 0xff);
817 norm
[2] = ((hex
>>16) & 0xff);
818 norm
[3] = ((hex
>>24) & 0xff);
819 v4_muls( norm
, 1.0f
/255.0f
, norm
);
822 static u32
ui_ntext( ui_rect rect
, const char *str
, u32 len
, ui_px scale
,
823 enum ui_align align
, u32 colour
)
826 if( colour
== 0 ) colour
= ui_colour( k_ui_fg
);
828 colour
&= 0x00ffffff;
830 const char *_c
= str
;
833 text_cursor
[0] = ui_text_aligned_x( str
, rect
, scale
, align
);
834 text_cursor
[1] = rect
[1];
835 text_cursor
[2] = 8*scale
;
836 text_cursor
[3] = 14*scale
;
838 u32 printed_chars
= 0;
840 if( align
& (k_ui_align_middle
|k_ui_align_bottom
) ){
841 ui_px height
= ui_text_string_height( str
) * scale
;
843 if( align
& k_ui_align_bottom
)
844 text_cursor
[1] += rect
[3]-height
;
846 text_cursor
[1] += (rect
[3]-height
)/2;
849 while( (c
= *(_c
++)) ){
850 if( printed_chars
>= len
){
852 text_cursor
[1] += 14*scale
;
853 text_cursor
[0] = ui_text_aligned_x( _c
, rect
, scale
, align
);
854 text_cursor
[0] -= UI_GLYPH_SPACING_X
*scale
;
857 u8 glyph_index
= '\xb6';
858 glyph_base
[0] = glyph_index
& 0xf;
859 glyph_base
[1] = (glyph_index
-glyph_base
[0])>>4;
863 ui_fill_rect( text_cursor
, 0x00ffffff, (ui_px
[4])
871 text_cursor
[0] += UI_GLYPH_SPACING_X
*scale
;
875 text_cursor
[1] += 14*scale
;
876 text_cursor
[0] = ui_text_aligned_x( _c
, rect
, scale
, align
);
883 glyph_base
[0] = glyph_index
& 0xf;
884 glyph_base
[1] = (glyph_index
-glyph_base
[0])>>4;
890 if( ui_clip( rect
, text_cursor
, rect_char
) ){
891 ui_fill_rect( rect_char
, colour
, (ui_px
[4])
900 else if( c
== '\x1B' ){
904 for( int i
=0; i
<3; i
++ ){
910 case '0': colour
= ui_colour( k_ui_fg
); break;
911 case '3'|'0'<<8: colour
= ui_colour( k_ui_bg
); break;
912 case '3'|'1'<<8: colour
= ui_colour( k_ui_red
); break;
913 case '3'|'2'<<8: colour
= ui_colour( k_ui_green
); break;
914 case '3'|'3'<<8: colour
= ui_colour( k_ui_yellow
); break;
915 case '3'|'4'<<8: colour
= ui_colour( k_ui_blue
); break;
916 case '3'|'5'<<8: colour
= ui_colour( k_ui_purple
); break;
917 case '3'|'6'<<8: colour
= ui_colour( k_ui_aqua
); break;
918 case '3'|'7'<<8: colour
= 0xffffffff; break;
921 colour
&= 0x00ffffff;
925 colour_id
|= _c
[i
] << (i
*8);
935 else if( c
== '\t' ){
936 text_cursor
[0] += UI_GLYPH_SPACING_X
*scale
*4;
941 text_cursor
[0] += UI_GLYPH_SPACING_X
*scale
;
945 return printed_chars
;
948 static void ui_text( ui_rect rect
, const char *str
, ui_px scale
,
949 enum ui_align align
, u32 colour
)
951 ui_ntext( rect
, str
, 1024, scale
, align
, colour
);
954 static void ui_image( ui_rect rect
, GLuint image
)
956 ui_flush( k_ui_shader_colour
);
957 glActiveTexture( GL_TEXTURE0
);
958 glBindTexture( GL_TEXTURE_2D
, image
);
959 ui_fill_rect( rect
, 0xffffffff, (ui_px
[4]){ 0,128, 128, 0 } );
960 ui_flush( k_ui_shader_image
);
963 static u32
v4f_u32_colour( v4f colour
)
965 u32 r
= colour
[0] * 255.0f
,
966 g
= colour
[1] * 255.0f
,
967 b
= colour
[2] * 255.0f
,
968 a
= colour
[3] * 255.0f
;
970 return r
| (g
<<8) | (b
<<16) | (a
<<24);
973 static void ui_defocus_all(void)
975 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
979 vg_ui
.focused_control_id
= NULL
;
980 vg_ui
.focused_control_hit
= 0;
981 vg_ui
.focused_control_type
= k_ui_control_none
;
984 static int ui_colourbutton( ui_rect rect
, enum ui_scheme_colour colour
)
986 int clickup
= ui_click_up(UI_MOUSE_LEFT
),
987 click
= ui_clicking(UI_MOUSE_LEFT
) | clickup
,
988 target
= ui_inside_rect( rect
, vg_ui
.mouse_click
) && click
,
989 hover
= ui_inside_rect( rect
, vg_ui
.mouse
);
991 u32 col_base
= vg_ui
.scheme
[ colour
],
992 col_highlight
= vg_ui
.scheme
[ k_ui_fg
],
993 col_hover
= vg_ui
.scheme
[ colour
+ k_ui_brighter
];
995 if( vg_ui
.focused_control_type
!= k_ui_control_none
){
1003 vg_ui
.cursor
= k_ui_cursor_hand
;
1010 ui_fill( rect
, col_highlight
);
1011 vg_ui
.ignore_input_frames
= 2;
1012 rect_copy( rect
, vg_ui
.click_fader
);
1014 rect_copy( rect
, vg_ui
.click_fader_end
);
1015 vg_ui
.click_fader_end
[3] = 0;
1016 ui_rect_center( rect
, vg_ui
.click_fader_end
);
1018 vg_ui
.click_fade_opacity
= 1.0f
;
1023 ui_fill( rect
, col_highlight
);
1028 ui_fill( rect
, col_base
);
1029 ui_outline( rect
, 1, col_highlight
);
1034 ui_fill( rect
, col_base
);
1040 ui_fill( rect
, col_hover
);
1044 ui_fill( rect
, col_base
);
1050 static int ui_colourbutton_text( ui_rect rect
, const char *string
, ui_px scale
,
1051 enum ui_scheme_colour colour
)
1053 int result
= ui_colourbutton( rect
, colour
);
1054 ui_rect t
= { 0,0, ui_text_line_width( string
)*scale
, 14*scale
};
1055 ui_rect_center( rect
, t
);
1056 ui_text( t
, string
, scale
, k_ui_align_left
, ui_colourcont(colour
) );
1060 static int ui_button_text( ui_rect rect
, const char *string
, ui_px scale
)
1062 return ui_colourbutton_text( rect
, string
, scale
, k_ui_bg
+4 );
1065 static void ui_enum_post(void);
1066 static void ui_postrender(void)
1068 if( vg_ui
.click_fade_opacity
> 0.0f
){
1069 float scale
= vg_ui
.click_fade_opacity
;
1070 scale
= vg_maxf( 1.0f
/255.0f
, scale
*scale
);
1072 vg_ui
.click_fade_opacity
-= vg
.time_frame_delta
* 3.8f
;
1073 u32 colour
= (0x00ffffff & ui_colour(k_ui_fg
))|0x7f000000;
1075 v4f begin
, end
, dest
;
1076 for( int i
=0; i
<4; i
++ ){
1077 begin
[i
] = vg_ui
.click_fader
[i
];
1078 end
[i
] = vg_ui
.click_fader_end
[i
]+1;
1081 v4_lerp( end
, begin
, scale
, dest
);
1084 for( int i
=0; i
<4; i
++ ){
1088 ui_fill( rect
, colour
);
1091 if( vg_ui
.focused_control_type
== k_ui_control_dropdown
){
1094 else if( vg_ui
.focused_control_type
== k_ui_control_modal
){
1095 ui_rect screen
= {0,0,vg
.window_x
,vg
.window_y
};
1096 ui_fill( screen
, 0xa0000000 );
1097 ui_rect box
= {0,0,400,200};
1099 u32 colour
= ui_colour(k_ui_fg
),
1100 type
= vg_ui
.modal
.options
& UI_MODAL_TYPE_BITS
;
1101 if ( type
== 1 ) colour
= ui_colour(k_ui_green
);
1102 else if( type
== 2 ) colour
= ui_colour(k_ui_red
);
1103 else if( type
== 3 ) colour
= ui_colour(k_ui_yellow
);
1105 ui_rect_center( screen
, box
);
1106 ui_fill( box
, ui_colour(k_ui_bg
) );
1107 ui_outline( box
, -1, colour
);
1110 rect_copy( box
, message
);
1112 ui_rect_center( box
, message
);
1114 ui_rect row0
, row1
, btn
;
1115 ui_split_ratio( message
, k_ui_axis_h
, 0.5f
, 0, row0
, row1
);
1116 row0
[0] += UI_GLYPH_SPACING_X
;
1117 ui_ntext( row0
, vg_ui
.modal
.message
, (box
[2]/UI_GLYPH_SPACING_X
)-2, 1,
1118 k_ui_align_left
, colour
);
1120 rect_copy( row1
, btn
);
1123 ui_rect_center( row1
, btn
);
1125 vg_ui
.focused_control_type
= k_ui_control_none
; /* HACK */
1126 if( !ui_button_text( btn
, "OK", 1 ) )
1127 vg_ui
.focused_control_hit
= 1;
1128 vg_ui
.focused_control_type
= k_ui_control_modal
; /* HACK */
1129 vg_ui
.wants_mouse
= 1;
1132 ui_flush( k_ui_shader_colour
);
1134 if( !vg_ui
.focused_control_hit
){
1138 if( vg_ui
.wants_mouse
){
1139 SDL_SetWindowGrab( vg
.window
, SDL_FALSE
);
1140 SDL_SetRelativeMouseMode( SDL_FALSE
);
1143 SDL_SetWindowGrab( vg
.window
, SDL_TRUE
);
1144 SDL_SetRelativeMouseMode( SDL_TRUE
);
1147 SDL_SetCursor( vg_ui
.cursor_map
[ vg_ui
.cursor
] );
1151 static void ui_dev_colourview(void)
1153 ui_rect window
= {vg
.window_x
-256,0,256,vg
.window_y
}, swatch
;
1155 const char *names
[vg_list_size(vg_ui
.scheme
)] = {
1156 [k_ui_bg
] = "k_ui_bg", "k_ui_bg+1", "k_ui_bg+2", "k_ui_bg+3",
1157 "k_ui_bg+4", "k_ui_bg+5", "k_ui_bg+6", "k_ui_bg+7",
1159 [k_ui_fg
] = "k_ui_fg", "k_ui_fg+1", "k_ui_fg+2", "k_ui_fg+3",
1160 "k_ui_fg+4", "k_ui_fg+5", "k_ui_fg+6", "k_ui_fg+7",
1162 [k_ui_red
] = "k_ui_red", "k_ui_orange", "k_ui_yellow", "k_ui_green",
1163 "k_ui_aqua", "k_ui_blue", "k_ui_purple", "k_ui_gray",
1164 "k_ui_red+8","k_ui_orange+8","k_ui_yellow+8","k_ui_green+8",
1165 "k_ui_aqua+8","k_ui_blue+8","k_ui_purple+8","k_ui_gray+8" };
1168 ui_split_ratio( window
, k_ui_axis_v
, 0.5f
, 0, col
[0], col
[1] );
1170 for( int i
=0; i
<vg_list_size(vg_ui
.scheme
); i
++ ){
1171 int which
= (i
/8)%2;
1173 ui_split( col
[which
], k_ui_axis_h
, 24, 0, swatch
, col
[which
] );
1174 ui_fill( swatch
, ui_colour(i
) );
1177 ui_text(swatch
, names
[i
], 1, k_ui_align_middle_left
, ui_colourcont(i
));
1183 * -----------------------------------------------------------------------------
1186 static int ui_checkbox( ui_rect rect
, const char *str_label
, int *data
)
1189 ui_split( rect
, k_ui_axis_v
, -rect
[3], 0, label
, box
);
1190 ui_text( label
, str_label
, 1, k_ui_align_middle_left
, 0 );
1192 int changed
= ui_colourbutton( box
, k_ui_bg
);
1194 *data
= (*data
) ^ 0x1;
1197 ui_rect_pad( box
, (ui_px
[2]){4,4} );
1198 ui_fill( box
, ui_colour( k_ui_orange
) );
1206 * -----------------------------------------------------------------------------
1210 * unfortunately no return value since we only find out that event in the
1213 static void ui_enum( ui_rect rect
, const char *str_label
,
1214 struct ui_dropdown_opt
*options
, u32 len
,
1215 struct ui_dropdown_value
*value
)
1218 ui_split( rect
, k_ui_axis_v
, ui_text_line_width( str_label
) + 8,
1220 ui_text( label
, str_label
, 1, k_ui_align_middle_left
, 0 );
1222 if( ui_button_text( box
, options
[ value
->index
].alias
, 1 ) ){
1223 vg_ui
.focused_control_type
= k_ui_control_dropdown
;
1224 vg_ui
.ptr_dropdown
= value
;
1225 vg_ui
.dropdown
.option_count
= len
;
1226 vg_ui
.dropdown
.options
= options
;
1227 rect_copy( box
, vg_ui
.dropdown
.rect
);
1231 static void ui_enum_post(void)
1234 rect_copy( vg_ui
.dropdown
.rect
, drawer
);
1235 drawer
[3] *= vg_ui
.dropdown
.option_count
;
1238 int clickany
= ui_click_up(UI_MOUSE_LEFT
|UI_MOUSE_RIGHT
|UI_MOUSE_MIDDLE
),
1239 hover
= ui_inside_rect( drawer
, vg_ui
.mouse
);
1241 if( clickany
&& !hover
){
1246 vg_ui
.focused_control_type
= k_ui_control_none
;
1247 struct ui_dropdown_value
*value
= vg_ui
.ptr_dropdown
;
1249 for( u32 i
=0; i
<vg_ui
.dropdown
.option_count
; i
++ ){
1251 ui_split( drawer
, k_ui_axis_h
, vg_ui
.dropdown
.rect
[3], 0, button
,drawer
);
1253 enum ui_scheme_colour colour
= k_ui_bg
+3;
1254 if( i
== value
->index
) colour
= k_ui_orange
;
1256 if( ui_colourbutton_text( button
, vg_ui
.dropdown
.options
[i
].alias
, 1,
1259 value
->value
= vg_ui
.dropdown
.options
[i
].value
;
1265 vg_ui
.focused_control_type
= k_ui_control_dropdown
;
1268 vg_ui
.focused_control_hit
= 1;
1273 * -----------------------------------------------------------------------------
1276 static void _ui_textbox_make_selection( int *start
, int *end
)
1278 *start
= VG_MIN( vg_ui
.textbox
.cursor_pos
, vg_ui
.textbox
.cursor_user
);
1279 *end
= VG_MAX( vg_ui
.textbox
.cursor_pos
, vg_ui
.textbox
.cursor_user
);
1282 static void _ui_textbox_move_cursor( int *cursor0
, int *cursor1
,
1283 int dir
, int snap_together
)
1285 *cursor0
= VG_MAX( 0, vg_ui
.textbox
.cursor_user
+ dir
);
1288 VG_MIN( vg_ui
.textbox
.len
-1, strlen( vg_ui
.textbuf
)),
1292 *cursor1
= *cursor0
;
1295 static int _ui_textbox_makeroom( int datastart
, int length
)
1297 int move_to
= VG_MIN( datastart
+length
, vg_ui
.textbox
.len
-1 );
1298 int move_amount
= strlen( vg_ui
.textbuf
)-datastart
;
1299 int move_end
= VG_MIN( move_to
+move_amount
, vg_ui
.textbox
.len
-1 );
1300 move_amount
= move_end
-move_to
;
1303 memmove( &vg_ui
.textbuf
[ move_to
],
1304 &vg_ui
.textbuf
[ datastart
],
1307 vg_ui
.textbuf
[ move_end
] = '\0';
1309 return VG_MIN( length
, vg_ui
.textbox
.len
-datastart
-1 );
1312 static int _ui_textbox_delete_char( int direction
)
1315 _ui_textbox_make_selection( &start
, &end
);
1317 /* There is no selection */
1319 if( direction
== 1 ) end
= VG_MIN( end
+1, strlen( vg_ui
.textbuf
) );
1320 else if( direction
== -1 ) start
= VG_MAX( start
-1, 0 );
1323 /* Still no selction, no need to do anything */
1327 /* Copy the end->terminator to start */
1328 int remaining_length
= strlen( vg_ui
.textbuf
)+1-end
;
1329 memmove( &vg_ui
.textbuf
[ start
],
1330 &vg_ui
.textbuf
[ end
],
1335 static void _ui_textbox_to_clipboard(void)
1338 _ui_textbox_make_selection( &start
, &end
);
1342 memcpy( buffer
, &vg_ui
.textbuf
[ start
], end
-start
);
1343 buffer
[ end
-start
] = 0x00;
1344 SDL_SetClipboardText( buffer
);
1348 static void _ui_textbox_clipboard_paste(void)
1350 if( !SDL_HasClipboardText() )
1353 char *text
= SDL_GetClipboardText();
1358 int datastart
= _ui_textbox_delete_char( 0 );
1359 int length
= strlen( text
);
1360 int cpylength
= _ui_textbox_makeroom( datastart
, length
);
1362 memcpy( vg_ui
.textbuf
+ datastart
, text
, cpylength
);
1363 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1364 &vg_ui
.textbox
.cursor_pos
, cpylength
, 1 );
1368 static void _ui_textbox_put_char( char c
)
1370 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char(0);
1372 if( _ui_textbox_makeroom( vg_ui
.textbox
.cursor_user
, 1 ) )
1373 vg_ui
.textbuf
[ vg_ui
.textbox
.cursor_user
] = c
;
1375 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1376 &vg_ui
.textbox
.cursor_pos
, 1, 1 );
1379 /* Receed secondary cursor */
1380 static void _ui_textbox_left_select(void)
1382 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, -1, 0 );
1385 /* Match and receed both cursors */
1386 static void _ui_textbox_left(void)
1388 int cursor_diff
= vg_ui
.textbox
.cursor_pos
- vg_ui
.textbox
.cursor_user
? 0: 1;
1390 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1391 &vg_ui
.textbox
.cursor_pos
, -cursor_diff
, 1 );
1394 static void _ui_textbox_up(void)
1396 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
){
1397 int line_begin
= vg_ui
.textbox
.cursor_user
;
1399 while( line_begin
){
1400 if( vg_ui
.textbuf
[ line_begin
-1 ] == '\n' ){
1408 int line_above_begin
= line_begin
-1;
1410 while( line_above_begin
){
1411 if( vg_ui
.textbuf
[ line_above_begin
-1 ] == '\n' ){
1415 line_above_begin
--;
1418 int offset
= vg_ui
.textbox
.cursor_user
- line_begin
,
1419 line_length_above
= line_begin
- line_above_begin
-1;
1421 offset
= VG_MIN( line_length_above
, offset
);
1423 vg_ui
.textbox
.cursor_user
= line_above_begin
+offset
;
1424 vg_ui
.textbox
.cursor_pos
= line_above_begin
+offset
;
1427 vg_ui
.textbox
.cursor_user
= line_begin
;
1428 vg_ui
.textbox
.cursor_pos
= line_begin
;
1432 if( vg_ui
.textbox
.callbacks
.up
){
1433 vg_ui
.textbox
.callbacks
.up( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1438 static void _ui_textbox_down(void)
1440 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
){
1441 int line_begin
= vg_ui
.textbox
.cursor_user
;
1443 while( line_begin
){
1444 if( vg_ui
.textbuf
[ line_begin
-1 ] == '\n' ){
1451 int line_below_begin
= vg_ui
.textbox
.cursor_user
;
1454 if( vg_ui
.textbuf
[ line_below_begin
] == '\0' ){
1455 vg_ui
.textbox
.cursor_user
= line_below_begin
;
1456 vg_ui
.textbox
.cursor_pos
= line_below_begin
;
1460 if( vg_ui
.textbuf
[ line_below_begin
] == '\n' ){
1461 line_below_begin
++;
1465 line_below_begin
++;
1468 int line_below_end
= line_below_begin
;
1470 if( vg_ui
.textbuf
[ line_below_end
] == '\0' ||
1471 vg_ui
.textbuf
[ line_below_end
] == '\n' ){
1478 int offset
= vg_ui
.textbox
.cursor_user
- line_begin
,
1479 line_length_below
= line_below_end
- line_below_begin
-1;
1481 offset
= VG_MIN( line_length_below
, offset
);
1483 vg_ui
.textbox
.cursor_user
= line_below_begin
+offset
;
1484 vg_ui
.textbox
.cursor_pos
= line_below_begin
+offset
;
1487 if( vg_ui
.textbox
.callbacks
.down
){
1488 vg_ui
.textbox
.callbacks
.down( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1493 static void _ui_textbox_right_select(void)
1495 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, 1, 0 );
1498 static void _ui_textbox_right(void)
1500 int cursor_diff
= vg_ui
.textbox
.cursor_pos
- vg_ui
.textbox
.cursor_user
? 0: 1;
1502 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1503 &vg_ui
.textbox
.cursor_pos
, +cursor_diff
, 1 );
1506 static void _ui_textbox_backspace(void)
1508 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1509 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char( -1 );
1510 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1512 if( vg_ui
.textbox
.callbacks
.change
){
1513 vg_ui
.textbox
.callbacks
.change( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1518 static void _ui_textbox_delete(void)
1520 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1521 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char( 1 );
1522 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1524 if( vg_ui
.textbox
.callbacks
.change
){
1525 vg_ui
.textbox
.callbacks
.change( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1530 static void _ui_textbox_home_select(void)
1532 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, -10000, 0 );
1535 static void _ui_textbox_home(void)
1537 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1538 &vg_ui
.textbox
.cursor_pos
, -10000, 1 );
1541 static void _ui_textbox_end_select(void)
1543 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, 10000, 0 );
1546 static void _ui_textbox_end(void)
1548 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1549 &vg_ui
.textbox
.cursor_pos
,
1550 vg_ui
.textbox
.len
-1, 1 );
1553 static void _ui_textbox_select_all(void)
1555 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, 10000, 0);
1556 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_pos
, NULL
, -10000, 0);
1559 static void _ui_textbox_cut(void)
1561 _ui_textbox_to_clipboard();
1562 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char(0);
1563 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1566 static void _ui_textbox_enter(void)
1568 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1569 if( vg_ui
.textbox
.callbacks
.enter
)
1570 vg_ui
.textbox
.callbacks
.enter( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1572 if( vg_ui
.focused_control_type
!= k_ui_control_textbox
) return;
1574 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
)
1575 _ui_textbox_put_char( '\n' );
1577 if( !(vg_ui
.textbox
.flags
& UI_TEXTBOX_AUTOFOCUS
) )
1584 * based on a visual character coordinate relative to the anchor of the textbox,
1585 * this works out the linear place in the buffer that coordinate maps to
1587 * input coordinates go in co[0], co[1], and the result index is in co[2]
1589 static void _ui_textbox_calc_index_from_grid( int co
[3], int wrap_length
)
1594 while( (c
= vg_ui
.textbuf
[i
[2]]) ){
1595 if( i
[1]==co
[1] && i
[0]>=co
[0] ) break;
1597 if( i
[0] >= wrap_length
){
1602 if( c
>= 32 && c
<= 126 ){
1606 else if( c
== '\n' ){
1609 if( i
[1] > co
[1] ) break;
1623 * based on the index specied in co[2], work out the visual character
1624 * coordinates and store them in co[0], co[1]
1626 static void _ui_textbox_index_calc_coords( int co
[3], int wrap_length
)
1634 while( (c
= vg_ui
.textbuf
[i
++]) ){
1635 if( i
> co
[2] ) break;
1636 if( co
[0] >= wrap_length
){
1640 if( c
>= 32 && c
<= 126 ) co
[0] ++;
1641 else if( c
== '\n' ){
1649 * calculate the number of characters remaining until either:
1650 * - the wrap_length limit is hit
1651 * - end of the line/string
1653 * index must be fully populated with visual X/Y, and linear index
1655 static int _ui_textbox_run_remaining( int index
[3], int wrap_length
)
1657 int i
=0, printed_chars
=0;
1659 while( (c
= vg_ui
.textbuf
[index
[2] + (i
++)]) ){
1660 if( index
[0]+i
>= wrap_length
) break;
1661 if( c
>= 32 && c
<= 126 ) printed_chars
++;
1662 else if( c
== '\n' ) break;
1665 return printed_chars
+1;
1668 static int ui_textbox( ui_rect rect
, char *buf
, u32 len
, u32 flags
,
1669 struct ui_textbox_callbacks
*callbacks
)
1671 int clickup
= ui_click_up(UI_MOUSE_LEFT
),
1672 clickdown
= ui_click_down(UI_MOUSE_LEFT
),
1673 click
= ui_clicking(UI_MOUSE_LEFT
) | clickup
,
1674 target
= ui_inside_rect( rect
, vg_ui
.mouse_click
) && click
,
1675 hover
= ui_inside_rect( rect
, vg_ui
.mouse
);
1677 /* allow instant transitions from textbox->textbox */
1678 if( (vg_ui
.focused_control_type
!= k_ui_control_none
) &&
1679 (vg_ui
.focused_control_type
!= k_ui_control_textbox
) ){
1685 flags
&= ~UI_TEXTBOX_AUTOFOCUS
;
1688 u32 col_base
= ui_colour( k_ui_bg
),
1689 col_highlight
= ui_colour( k_ui_fg
),
1690 col_cursor
= (0x00ffffff & ui_colour(k_ui_fg
))|0x7f000000;
1695 rect_copy( rect
, text_rect
);
1697 if( flags
& UI_TEXTBOX_MULTILINE
) text_rect
[3] = rect
[3]-16;
1698 else text_rect
[3] = 14;
1701 ui_rect_center( rect
, text_rect
);
1703 ui_px wrap_length
= 1024;
1705 if( flags
& UI_TEXTBOX_WRAP
)
1706 wrap_length
= text_rect
[2] / UI_GLYPH_SPACING_X
;
1709 vg_ui
.cursor
= k_ui_cursor_ibeam
;
1712 if( vg_ui
.focused_control_id
== buf
){
1713 ui_fill( rect
, col_base
);
1714 ui_ntext( text_rect
, buf
, wrap_length
, 1, k_ui_align_left
, 0 );
1716 if( !(flags
& UI_TEXTBOX_AUTOFOCUS
) && ((clickup
||clickdown
) && !target
)){
1720 vg_ui
.focused_control_hit
= 1;
1721 if( click
&& target
){
1723 (vg_ui
.mouse_click
[0] - text_rect
[0]) / UI_GLYPH_SPACING_X
,
1724 (vg_ui
.mouse_click
[1] - text_rect
[1]) / 14,
1728 (vg_ui
.mouse
[0] - text_rect
[0]) / UI_GLYPH_SPACING_X
,
1729 (vg_ui
.mouse
[1] - text_rect
[1]) / 14,
1733 if( flags
& UI_TEXTBOX_MULTILINE
){
1734 _ui_textbox_calc_index_from_grid( p0
, wrap_length
);
1735 _ui_textbox_calc_index_from_grid( p1
, wrap_length
);
1737 vg_ui
.textbox
.cursor_pos
= p0
[2];
1738 vg_ui
.textbox
.cursor_user
= p1
[2];
1741 int max
= strlen( buf
);
1742 vg_ui
.textbox
.cursor_pos
= VG_MAX( 0, VG_MIN( max
, p0
[0] )),
1743 vg_ui
.textbox
.cursor_user
= VG_MAX( 0, VG_MIN( max
, p1
[0] ));
1747 ui_outline( rect
, -2, vg_ui
.scheme
[ k_ui_orange
] );
1751 int c0
= vg_ui
.textbox
.cursor_pos
,
1752 c1
= vg_ui
.textbox
.cursor_user
,
1753 start
= VG_MIN( c0
, c1
),
1754 end
= VG_MAX( c0
, c1
),
1757 if( flags
& (UI_TEXTBOX_MULTILINE
|UI_TEXTBOX_WRAP
) ){
1759 int pos
[3], remaining
= chars
;
1762 _ui_textbox_index_calc_coords( pos
, wrap_length
);
1765 cursor
[0] = text_rect
[0] + pos
[0]*UI_GLYPH_SPACING_X
-1;
1766 cursor
[1] = text_rect
[1] + pos
[1]*14;
1769 ui_fill( cursor
, col_cursor
);
1770 rect_copy( cursor
, vg_ui
.click_fader_end
);
1774 int run
= _ui_textbox_run_remaining( pos
, wrap_length
);
1775 run
= VG_MIN( run
, remaining
);
1777 cursor
[0] = text_rect
[0] + pos
[0]*UI_GLYPH_SPACING_X
-1;
1778 cursor
[1] = text_rect
[1] + pos
[1]*14;
1779 cursor
[2] = (float)(run
)*(float)UI_GLYPH_SPACING_X
;
1782 ui_fill( cursor
, col_cursor
);
1789 rect_copy( cursor
, vg_ui
.click_fader_end
);
1793 cursor
[0] = text_rect
[0] + start
*UI_GLYPH_SPACING_X
-1;
1794 cursor
[1] = text_rect
[1];
1801 cursor
[2] = (float)(chars
)*(float)UI_GLYPH_SPACING_X
;
1804 if( (vg_ui
.click_fade_opacity
<=0.0f
) &&
1805 ui_clip( rect
, cursor
, cursor
) ){
1806 ui_fill( cursor
, col_cursor
);
1809 rect_copy( cursor
, vg_ui
.click_fader_end
);
1816 if( click
|| (flags
& UI_TEXTBOX_AUTOFOCUS
) ){
1817 if( (target
&& hover
) || (flags
& UI_TEXTBOX_AUTOFOCUS
) ){
1820 ui_fill( rect
, col_highlight
);
1821 vg_ui
.ignore_input_frames
= 2;
1822 rect_copy( rect
, vg_ui
.click_fader
);
1823 rect_copy( rect
, vg_ui
.click_fader_end
);
1825 vg_ui
.click_fade_opacity
= 1.0f
;
1826 vg_ui
.textbuf
= buf
;
1827 vg_ui
.focused_control_hit
= 1;
1828 vg_ui
.focused_control_type
= k_ui_control_textbox
;
1829 vg_ui
.textbox
.len
= len
;
1830 vg_ui
.textbox
.flags
= flags
;
1831 vg_ui
.textbox
.cursor_pos
= 0;
1832 vg_ui
.textbox
.cursor_user
= 0;
1835 vg_ui
.textbox
.callbacks
= *callbacks
;
1838 vg_ui
.textbox
.callbacks
.change
= NULL
;
1839 vg_ui
.textbox
.callbacks
.down
= NULL
;
1840 vg_ui
.textbox
.callbacks
.up
= NULL
;
1841 vg_ui
.textbox
.callbacks
.enter
= NULL
;
1844 SDL_StartTextInput();
1848 ui_fill( rect
, col_base
);
1851 ui_outline( rect
, -1, col_highlight
);
1854 ui_ntext( text_rect
, buf
, wrap_length
, 1, k_ui_align_left
, 0 );
1860 * -----------------------------------------------------------------------------
1862 static void ui_start_modal( const char *message
, u32 options
){
1863 vg_ui
.focused_control_type
= k_ui_control_modal
;
1864 vg_ui
.modal
.message
= message
;
1865 vg_ui
.modal
.callbacks
.close
= NULL
;
1866 vg_ui
.modal
.options
= options
;
1868 u32 type
= options
& UI_MODAL_TYPE_BITS
;
1869 if( type
== UI_MODAL_OK
) vg_info( message
);
1870 else if( type
== UI_MODAL_WARN
) vg_warn( message
);
1871 else if( type
== UI_MODAL_GOOD
) vg_success( message
);
1872 else if( type
== UI_MODAL_BAD
) vg_error( message
);
1877 * -----------------------------------------------------------------------------
1883 static void _ui_proc_key( SDL_Keysym ev
)
1885 if( vg_ui
.focused_control_type
!= k_ui_control_textbox
){
1889 struct textbox_mapping
1894 void (*handler
)(void);
1898 { 0, SDLK_LEFT
, _ui_textbox_left
},
1899 { KMOD_SHIFT
, SDLK_LEFT
, _ui_textbox_left_select
},
1900 { 0, SDLK_RIGHT
, _ui_textbox_right
},
1901 { KMOD_SHIFT
, SDLK_RIGHT
, _ui_textbox_right_select
},
1902 { 0, SDLK_DOWN
, _ui_textbox_down
},
1903 { 0, SDLK_UP
, _ui_textbox_up
},
1904 { 0, SDLK_BACKSPACE
, _ui_textbox_backspace
},
1905 { KMOD_SHIFT
, SDLK_BACKSPACE
, _ui_textbox_backspace
},
1906 { KMOD_CTRL
, SDLK_BACKSPACE
, _ui_textbox_backspace
},
1907 { 0, SDLK_DELETE
, _ui_textbox_delete
},
1908 { 0, SDLK_HOME
, _ui_textbox_home
},
1909 { KMOD_SHIFT
, SDLK_HOME
, _ui_textbox_home_select
},
1910 { 0, SDLK_END
, _ui_textbox_end
},
1911 { KMOD_SHIFT
, SDLK_END
, _ui_textbox_end_select
},
1912 { KMOD_CTRL
, SDLK_a
, _ui_textbox_select_all
},
1913 { KMOD_CTRL
, SDLK_c
, _ui_textbox_to_clipboard
},
1914 { KMOD_CTRL
, SDLK_x
, _ui_textbox_cut
},
1915 { KMOD_CTRL
, SDLK_v
, _ui_textbox_clipboard_paste
},
1916 { 0, SDLK_RETURN
, _ui_textbox_enter
},
1917 { 0, SDLK_ESCAPE
, ui_defocus_all
},
1922 if( ev
.mod
& KMOD_SHIFT
)
1925 if( ev
.mod
& KMOD_CTRL
)
1928 if( ev
.mod
& KMOD_ALT
)
1931 for( int i
=0; i
<vg_list_size( mappings
); i
++ ){
1932 struct textbox_mapping
*mapping
= &mappings
[i
];
1934 if( mapping
->key
== ev
.sym
){
1935 if( mapping
->mod
== 0 ){
1941 else if( (mod
& mapping
->mod
) == mapping
->mod
){
1950 * Callback for text entry mode
1952 VG_STATIC
void ui_proc_utf8( const char *text
)
1954 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1955 const char *ptr
= text
;
1958 if( *ptr
!= '`' ) _ui_textbox_put_char( *ptr
);
1962 if( vg_ui
.textbox
.callbacks
.change
){
1963 vg_ui
.textbox
.callbacks
.change( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1968 static void ui_label( ui_rect rect
, const char *text
, ui_px size
,
1969 ui_px gap
, ui_rect r
)
1972 ui_px width
= (ui_text_line_width(text
)+UI_GLYPH_SPACING_X
) * size
;
1973 ui_split( rect
, k_ui_axis_v
, width
, gap
, l
, r
);
1974 ui_text( l
, text
, 1, k_ui_align_middle_left
, 0 );
1977 #endif /* VG_IMGUI_H */