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
85 #define UI_MOUSE_LEFT (SDL_BUTTON(SDL_BUTTON_LEFT))
86 #define UI_MOUSE_RIGHT (SDL_BUTTON(SDL_BUTTON_RIGHT))
87 #define UI_MOUSE_MIDDLE (SDL_BUTTON(SDL_BUTTON_MIDDLE))
90 struct ui_vert
*vertex_buffer
;
92 u32 max_verts
, max_indices
,
94 vert_start
, indice_start
;
97 void *focused_control_id
; /* uses the memory location of various locking
100 struct ui_dropdown_value
{
106 u32 focused_control_hit
;
107 enum ui_control_type
{
109 k_ui_control_textbox
,
110 k_ui_control_dropdown
112 focused_control_type
;
116 int cursor_user
, cursor_pos
;
120 struct ui_textbox_callbacks
{
121 void (*enter
)( char *, u32
),
122 (*up
)( char *, u32
),
123 (*down
)( char *, u32
),
124 (*change
)( char *, u32
);
131 struct ui_dropdown_opt
{
142 GLuint tex_glyphs
, vao
, vbo
, ebo
;
144 ui_px mouse
[2], mouse_click
[2];
146 u32 ignore_input_frames
;
149 ui_rect click_fader
, click_fader_end
;
150 float click_fade_opacity
;
162 SDL_Cursor
*cursor_map
[ k_ui_cursor_max
];
166 [ k_ui_bg
+0 ] = UI_RGB( 0x1d2021 ),
167 [ k_ui_bg
+1 ] = UI_RGB( 0x282828 ),
168 [ k_ui_bg
+2 ] = UI_RGB( 0x3c3836 ),
169 [ k_ui_bg
+3 ] = UI_RGB( 0x504945 ),
170 [ k_ui_bg
+4 ] = UI_RGB( 0x665c54 ),
171 [ k_ui_bg
+5 ] = UI_RGB( 0x7c6f64 ),
172 [ k_ui_bg
+6 ] = UI_RGB( 0x928374 ),
173 [ k_ui_bg
+7 ] = UI_RGB( 0xa89984 ),
175 [ k_ui_fg
+0 ] = UI_RGB( 0xebdbb2 ),
176 [ k_ui_fg
+1 ] = UI_RGB( 0xfbf1c7 ),
177 [ k_ui_fg
+2 ] = UI_RGB( 0xd5c4a1 ),
178 [ k_ui_fg
+3 ] = UI_RGB( 0xbdae93 ),
179 [ k_ui_fg
+4 ] = UI_RGB( 0xa89984 ),
180 [ k_ui_fg
+5 ] = UI_RGB( 0x000000 ),
181 [ k_ui_fg
+6 ] = UI_RGB( 0x000000 ),
182 [ k_ui_fg
+7 ] = UI_RGB( 0x000000 ),
184 [ k_ui_red
] = UI_RGB( 0xcc241d ),
185 [ k_ui_orange
] = UI_RGB( 0xd65d0e ),
186 [ k_ui_yellow
] = UI_RGB( 0xd79921 ),
187 [ k_ui_green
] = UI_RGB( 0x98971a ),
188 [ k_ui_aqua
] = UI_RGB( 0x689d6a ),
189 [ k_ui_blue
] = UI_RGB( 0x458588 ),
190 [ k_ui_purple
] = UI_RGB( 0xb16286 ),
191 [ k_ui_gray
] = UI_RGB( 0x928374 ),
192 [ k_ui_red
+ k_ui_brighter
] = UI_RGB( 0xfb4934 ),
193 [ k_ui_orange
+ k_ui_brighter
] = UI_RGB( 0xfe8019 ),
194 [ k_ui_yellow
+ k_ui_brighter
] = UI_RGB( 0xfabd2f ),
195 [ k_ui_green
+ k_ui_brighter
] = UI_RGB( 0xb8bb26 ),
196 [ k_ui_aqua
+ k_ui_brighter
] = UI_RGB( 0x8ec07c ),
197 [ k_ui_blue
+ k_ui_brighter
] = UI_RGB( 0x83a598 ),
198 [ k_ui_purple
+ k_ui_brighter
] = UI_RGB( 0xd3869b ),
199 [ k_ui_gray
+ k_ui_brighter
] = UI_RGB( 0xa89984 ),
203 static struct vg_shader _shader_ui
=
211 "layout (location=0) in vec2 a_co;"
212 "layout (location=1) in vec2 a_uv;"
213 "layout (location=2) in vec4 a_colour;"
216 "out vec2 aTexCoords;"
222 "gl_Position = vec4( uPv * vec3( a_co, 1.0 ), 1.0 );"
223 "aTexCoords = a_uv * 0.0078125;"
224 "aColour = a_colour;"
233 "uniform sampler2D uTexGlyphs;"
234 "out vec4 FragColor;"
236 "in vec2 aTexCoords;"
241 "vec2 rand_hash22( vec2 p )"
243 "vec3 p3 = fract(vec3(p.xyx) * 213.8976123);"
244 "p3 += dot(p3, p3.yzx+19.19);"
245 "return fract(vec2((p3.x + p3.y)*p3.z, (p3.x+p3.z)*p3.y));"
250 "vec4 diffuse = aColour;"
252 "if( diffuse.a == 0.0 )"
254 "diffuse.a = texture( uTexGlyphs, aTexCoords ).r;"
257 "FragColor = diffuse;"
262 static struct vg_shader _shader_ui_image
=
264 .name
= "[vg] ui_image",
270 "layout (location=0) in vec2 a_co;"
271 "layout (location=1) in vec2 a_uv;"
272 "layout (location=2) in vec4 a_colour;"
275 "out vec2 aTexCoords;"
281 "gl_Position = vec4( uPv * vec3( a_co, 1.0 ), 1.0 );"
282 "aTexCoords = a_uv * 0.0078125;"
283 "aColour = a_colour;"
292 "uniform sampler2D uTexImage;"
293 "out vec4 FragColor;"
295 "in vec2 aTexCoords;"
301 "vec4 colour = texture( uTexImage, aTexCoords );"
302 "FragColor = colour;"
306 #define UI_GLYPH_SPACING_X 8
308 VG_STATIC
void _vg_ui_init(void)
310 if( !vg_shader_compile( &_shader_ui
) ||
311 !vg_shader_compile( &_shader_ui_image
) )
312 vg_fatal_error( "Failed to compile ui shader" );
316 * ----------------------------------------
319 vg_ui
.max_indices
= 20000;
320 vg_ui
.max_verts
= 30000;
322 /* Generate the buffer we are gonna be drawing to */
323 glGenVertexArrays( 1, &vg_ui
.vao
);
324 glGenBuffers( 1, &vg_ui
.vbo
);
325 glGenBuffers( 1, &vg_ui
.ebo
);
327 glBindVertexArray( vg_ui
.vao
);
328 glBindBuffer( GL_ARRAY_BUFFER
, vg_ui
.vbo
);
330 glBufferData( GL_ARRAY_BUFFER
,
331 vg_ui
.max_verts
* sizeof( struct ui_vert
),
332 NULL
, GL_DYNAMIC_DRAW
);
333 glBindVertexArray( vg_ui
.vao
);
335 glBindBuffer( GL_ELEMENT_ARRAY_BUFFER
, vg_ui
.ebo
);
336 glBufferData( GL_ELEMENT_ARRAY_BUFFER
,
337 vg_ui
.max_indices
* sizeof( u16
), NULL
, GL_DYNAMIC_DRAW
);
342 u32
const stride
= sizeof( struct ui_vert
);
345 glVertexAttribPointer( 0, 2, GL_SHORT
, GL_FALSE
, stride
,
346 (void *)offsetof( struct ui_vert
, co
) );
347 glEnableVertexAttribArray( 0 );
350 glVertexAttribPointer( 1, 2, GL_UNSIGNED_BYTE
, GL_FALSE
, stride
,
351 (void *)offsetof( struct ui_vert
, uv
) );
352 glEnableVertexAttribArray( 1 );
355 glVertexAttribPointer( 2, 4, GL_UNSIGNED_BYTE
, GL_TRUE
, stride
,
356 (void *)offsetof( struct ui_vert
, colour
) );
357 glEnableVertexAttribArray( 2 );
361 /* Alloc RAM default context */
362 u32 vert_size
= vg_ui
.max_verts
*sizeof(struct ui_vert
),
363 inds_size
= vg_align8( vg_ui
.max_indices
*sizeof(u16
) );
365 vg_ui
.vertex_buffer
= vg_linear_alloc( vg_mem
.rtmemory
, vert_size
);
366 vg_ui
.indice_buffer
= vg_linear_alloc( vg_mem
.rtmemory
, inds_size
);
369 * -----------------------------------------------------
372 /* Load default font */
374 #include "vg/vg_pxfont_thin.h"
377 u32 pixels
= 0, total
= 256*256, data
= 0;
380 while( pixels
< total
){
381 for( int b
= 31; b
>= 0; b
-- ){
382 image
[ pixels
++ ] = (compressed
[data
] & (0x1u
<< b
))? 0xffu
: 0x00u
;
384 if( pixels
>= total
){
392 glGenTextures( 1, &vg_ui
.tex_glyphs
);
393 glBindTexture( GL_TEXTURE_2D
, vg_ui
.tex_glyphs
);
394 glTexImage2D( GL_TEXTURE_2D
, 0, GL_R8
, 256, 256, 0,
395 GL_RED
, GL_UNSIGNED_BYTE
, image
);
398 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_WRAP_S
, GL_CLAMP_TO_EDGE
);
399 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_WRAP_T
, GL_CLAMP_TO_EDGE
);
400 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_MIN_FILTER
, GL_NEAREST
);
401 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_MAG_FILTER
, GL_NEAREST
);
405 * ---------------------------------------------------------------
408 vg_ui
.cursor_map
[ k_ui_cursor_default
] =
409 SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_ARROW
);
410 vg_ui
.cursor_map
[ k_ui_cursor_hand
] =
411 SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_HAND
);
412 vg_ui
.cursor_map
[ k_ui_cursor_ibeam
] =
413 SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_IBEAM
);
421 static void rect_copy( ui_rect a
, ui_rect b
)
423 for( int i
=0; i
<4; i
++ )
427 VG_STATIC
void ui_flush( enum ui_shader shader
)
429 u32 vertex_offset
= vg_ui
.vert_start
*sizeof(ui_vert
),
430 vertex_count
= vg_ui
.cur_vert
-vg_ui
.vert_start
,
431 vertex_size
= vertex_count
*sizeof(ui_vert
),
433 indice_offset
= vg_ui
.indice_start
*sizeof(u16
),
434 indice_count
= vg_ui
.cur_indice
-vg_ui
.indice_start
,
435 indice_size
= indice_count
* sizeof(u16
);
437 if( !vertex_size
|| !indice_size
)
440 glBindVertexArray( vg_ui
.vao
);
441 glBindBuffer( GL_ARRAY_BUFFER
, vg_ui
.vbo
);
442 glBufferSubData( GL_ARRAY_BUFFER
, vertex_offset
, vertex_size
,
443 vg_ui
.vertex_buffer
+vg_ui
.vert_start
);
445 glBindBuffer( GL_ELEMENT_ARRAY_BUFFER
, vg_ui
.ebo
);
446 glBufferSubData( GL_ELEMENT_ARRAY_BUFFER
, indice_offset
, indice_size
,
447 vg_ui
.indice_buffer
+vg_ui
.indice_start
);
449 glDisable( GL_DEPTH_TEST
);
450 glEnable( GL_BLEND
);
451 glBlendFunc( GL_SRC_ALPHA
, GL_ONE_MINUS_SRC_ALPHA
);
452 glBlendEquation( GL_FUNC_ADD
);
453 glDisable( GL_CULL_FACE
);
455 m3x3f view
= M3X3_IDENTITY
;
456 m3x3_translate( view
, (v3f
){ -1.0f
, 1.0f
, 0.0f
} );
457 m3x3_scale( view
, (v3f
){ 1.0f
/((float)vg
.window_x
*0.5f
),
458 -1.0f
/((float)vg
.window_y
*0.5f
), 1.0f
} );
460 if( shader
== k_ui_shader_colour
){
461 glUseProgram( _shader_ui
.id
);
463 glUniformMatrix3fv( glGetUniformLocation( _shader_ui
.id
, "uPv" ), 1,
464 GL_FALSE
, (float *)view
);
466 glActiveTexture( GL_TEXTURE0
);
467 glBindTexture( GL_TEXTURE_2D
, vg_ui
.tex_glyphs
);
468 glUniform1i( glGetUniformLocation( _shader_ui
.id
, "uTexGlyphs" ), 0 );
470 else if( shader
== k_ui_shader_image
){
471 glUseProgram( _shader_ui_image
.id
);
472 glUniformMatrix3fv( glGetUniformLocation( _shader_ui_image
.id
, "uPv" ), 1,
473 GL_FALSE
, (float *)view
);
474 glUniform1i( glGetUniformLocation(_shader_ui_image
.id
,"uTexImage"), 0 );
477 vg_fatal_error( "Invalid UI shader (%d)\n", shader
);
479 glDrawElements( GL_TRIANGLES
, indice_count
, GL_UNSIGNED_SHORT
,
480 (void *)(vg_ui
.indice_start
*sizeof(u16
)) );
482 glDisable( GL_BLEND
);
484 vg_ui
.indice_start
= vg_ui
.cur_indice
;
485 vg_ui
.vert_start
= vg_ui
.cur_vert
;
488 static void ui_fill_rect( ui_rect rect
, u32 colour
, ui_px uv
[4] )
490 /* this if far from ideal but stops us from crashing */
491 if( (vg_ui
.cur_vert
+ 4 > vg_ui
.max_verts
) ||
492 (vg_ui
.cur_indice
+ 6 > vg_ui
.max_indices
))
495 struct ui_vert
*vertices
= &vg_ui
.vertex_buffer
[ vg_ui
.cur_vert
];
496 u16
*indices
= &vg_ui
.indice_buffer
[ vg_ui
.cur_indice
];
498 for( int i
=0; i
<4; i
++ ){
499 vertices
[i
].colour
= colour
;
502 vertices
[0].co
[0] = rect
[0];
503 vertices
[0].co
[1] = rect
[1];
504 vertices
[0].uv
[0] = uv
[0];
505 vertices
[0].uv
[1] = uv
[1];
506 vertices
[1].co
[0] = rect
[0]+rect
[2];
507 vertices
[1].co
[1] = rect
[1];
508 vertices
[1].uv
[0] = uv
[2];
509 vertices
[1].uv
[1] = uv
[1];
510 vertices
[2].co
[0] = rect
[0]+rect
[2];
511 vertices
[2].co
[1] = rect
[1]+rect
[3];
512 vertices
[2].uv
[0] = uv
[2];
513 vertices
[2].uv
[1] = uv
[3];
514 vertices
[3].co
[0] = rect
[0];
515 vertices
[3].co
[1] = rect
[1]+rect
[3];
516 vertices
[3].uv
[0] = uv
[0];
517 vertices
[3].uv
[1] = uv
[3];
518 u16 ind_start
= vg_ui
.cur_vert
;
520 u16 start
= vg_ui
.cur_vert
;
521 u32 mesh
[] = { 0,2,1, 0,3,2 };
523 for( u32 i
=0; i
<vg_list_size(mesh
); i
++ ){
524 indices
[i
] = start
+mesh
[i
];
527 vg_ui
.cur_indice
+= 6;
531 static void ui_fill( ui_rect rect
, u32 colour
)
533 ui_fill_rect( rect
, colour
, (ui_px
[4]){ 4,4,4,4 } );
536 static void ui_outline( ui_rect rect
, ui_px thickness
, u32 colour
)
538 /* this if far from ideal but stops us from crashing */
539 if( (vg_ui
.cur_vert
+ 8 > vg_ui
.max_verts
) ||
540 (vg_ui
.cur_indice
+ 24 > vg_ui
.max_indices
))
543 struct ui_vert
*vertices
= &vg_ui
.vertex_buffer
[ vg_ui
.cur_vert
];
544 u16
*indices
= &vg_ui
.indice_buffer
[ vg_ui
.cur_indice
];
546 for( int i
=0; i
<8; i
++ ){
547 vertices
[i
].uv
[0] = 4;
548 vertices
[i
].uv
[1] = 4;
549 vertices
[i
].colour
= colour
;
552 vertices
[0].co
[0] = rect
[0];
553 vertices
[0].co
[1] = rect
[1];
554 vertices
[1].co
[0] = rect
[0]+rect
[2];
555 vertices
[1].co
[1] = rect
[1];
556 vertices
[2].co
[0] = rect
[0]+rect
[2];
557 vertices
[2].co
[1] = rect
[1]+rect
[3];
558 vertices
[3].co
[0] = rect
[0];
559 vertices
[3].co
[1] = rect
[1]+rect
[3];
560 vertices
[4].co
[0] = vertices
[0].co
[0]-thickness
;
561 vertices
[4].co
[1] = vertices
[0].co
[1]-thickness
;
562 vertices
[5].co
[0] = vertices
[1].co
[0]+thickness
;
563 vertices
[5].co
[1] = vertices
[1].co
[1]-thickness
;
564 vertices
[6].co
[0] = vertices
[2].co
[0]+thickness
;
565 vertices
[6].co
[1] = vertices
[2].co
[1]+thickness
;
566 vertices
[7].co
[0] = vertices
[3].co
[0]-thickness
;
567 vertices
[7].co
[1] = vertices
[3].co
[1]+thickness
;
569 u16 start
= vg_ui
.cur_vert
;
570 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 };
572 for( u32 i
=0; i
<vg_list_size(mesh
); i
++ ){
573 indices
[i
] = start
+mesh
[i
];
576 vg_ui
.cur_indice
+= 24;
580 static void ui_split( ui_rect rect
,
581 enum ui_axis other
, ui_px width
, ui_px gap
,
582 ui_rect l
, ui_rect r
)
584 enum ui_axis dir
= other
^ 0x1;
586 if( width
< 0 ) width
= rect
[ 2+dir
] + width
;
589 rect_copy( rect
, temp
);
591 l
[ dir
] = temp
[ dir
];
592 r
[ dir
] = temp
[ dir
] + width
+ (gap
/2);
593 l
[ other
] = temp
[ other
];
594 r
[ other
] = temp
[ other
];
595 l
[ 2+dir
] = width
- (gap
/2);
596 r
[ 2+dir
] = temp
[ 2+dir
] - width
- (gap
/2);
597 l
[ 2+other
] = temp
[ 2+other
];
598 r
[ 2+other
] = temp
[ 2+other
];
601 static ui_px
ui_text_line_width( const char *str
);
602 static void ui_split_label( ui_rect rect
, const char *text
, ui_px size
,
603 ui_px gap
, ui_rect l
, ui_rect r
)
605 ui_px width
= ui_text_line_width( text
) * size
;
606 ui_split( rect
, k_ui_axis_v
, width
, gap
, l
, r
);
609 static void ui_rect_center( ui_rect parent
, ui_rect rect
)
611 rect
[0] = parent
[0] + (parent
[2]-rect
[2])/2;
612 rect
[1] = parent
[1] + (parent
[3]-rect
[3])/2;
615 static void ui_fit_item( ui_rect rect
, ui_px size
[2], ui_rect d
)
617 i32 rp
= (i32
)rect
[2] * (i32
)size
[1],
618 rc
= (i32
)size
[0] * (i32
)rect
[3];
620 enum ui_axis dir
, other
;
621 if( rc
> rp
) dir
= k_ui_axis_h
;
622 else dir
= k_ui_axis_v
;
625 d
[2+dir
] = rect
[2+dir
];
626 d
[2+other
] = (rect
[2+dir
] * size
[other
]) / size
[dir
];
628 ui_rect_center( rect
, d
);
631 static void ui_split_ratio( ui_rect rect
, enum ui_axis dir
, float ratio
,
632 ui_px gap
, ui_rect l
, ui_rect r
)
634 ui_px width
= (float)rect
[ 2+(dir
^0x1) ] * ratio
;
635 ui_split( rect
, dir
, width
, gap
, l
, r
);
638 static void ui_rect_pad( ui_rect rect
, ui_px pad
[2] )
646 static ui_px
ui_text_line_width( const char *str
)
649 const char *_c
= str
;
652 while( (c
= *(_c
++)) ){
653 if( c
>= 32 ) length
++;
654 else if( c
== '\n' ) break;
660 static ui_px
ui_text_string_height( const char *str
)
663 const char *_c
= str
;
666 while( (c
= *(_c
++)) ){
667 if( c
== '\n' ) height
++;
673 static ui_px
ui_text_aligned_x( const char *str
, ui_rect rect
, ui_px scale
,
674 enum ui_align align
)
676 enum ui_align lwr
= k_ui_align_lwr
& align
;
677 if( lwr
== k_ui_align_left
){
681 ui_px width
= ui_text_line_width( str
) * scale
;
683 if( lwr
== k_ui_align_right
)
684 return rect
[0] + rect
[2]-width
;
686 return rect
[0] + (rect
[2]-width
)/2;
690 static ui_px
ui_min( ui_px a
, ui_px b
){ return a
<b
?a
:b
; }
691 static ui_px
ui_max( ui_px a
, ui_px b
){ return a
>b
?a
:b
; }
692 static ui_px
ui_clamp( ui_px a
, ui_px min
, ui_px max
)
694 return ui_min( max
, ui_max( a
, min
) );
697 static int ui_clip( ui_rect parent
, ui_rect child
, ui_rect clipped
)
699 ui_px parent_max
[2], child_max
[2];
700 parent_max
[0] = parent
[0]+parent
[2];
701 parent_max
[1] = parent
[1]+parent
[3];
702 child_max
[0] = child
[0]+child
[2];
703 child_max
[1] = child
[1]+child
[3];
705 clipped
[0] = ui_clamp( child
[0], parent
[0], parent_max
[0] );
706 clipped
[1] = ui_clamp( child
[1], parent
[1], parent_max
[1] );
707 clipped
[2] = ui_clamp( child_max
[0], parent
[0], parent_max
[0] );
708 clipped
[3] = ui_clamp( child_max
[1], parent
[1], parent_max
[1] );
710 if( clipped
[0] == clipped
[2] ||
711 clipped
[1] == clipped
[3] )
714 clipped
[2] -= clipped
[0];
715 clipped
[3] -= clipped
[1];
720 static int ui_inside_rect( ui_rect rect
, ui_px co
[2] )
722 if( co
[0] >= rect
[0] &&
724 co
[0] <= rect
[0]+rect
[2] &&
725 co
[1] <= rect
[1]+rect
[3] )
733 static int ui_click_down( u32 mask
)
735 if( vg_ui
.ignore_input_frames
) return 0;
736 if( (vg_ui
.mouse_state
[0] & mask
) &&
737 !(vg_ui
.mouse_state
[1] & mask
) )
743 static int ui_clicking( u32 mask
)
745 if( vg_ui
.ignore_input_frames
) return 0;
746 return vg_ui
.mouse_state
[0] & mask
;
749 static int ui_click_up( u32 mask
)
751 if( vg_ui
.ignore_input_frames
) return 0;
752 if( (vg_ui
.mouse_state
[1] & mask
) &&
753 !(vg_ui
.mouse_state
[0] & mask
) )
759 static void ui_prerender(void)
762 vg_ui
.mouse_state
[1] = vg_ui
.mouse_state
[0];
763 vg_ui
.mouse_state
[0] = SDL_GetMouseState( &x
, &y
);
768 vg_ui
.cur_indice
= 0;
769 vg_ui
.vert_start
= 0;
770 vg_ui
.indice_start
= 0;
771 vg_ui
.focused_control_hit
= 0;
772 vg_ui
.cursor
= k_ui_cursor_default
;
773 vg_ui
.wants_mouse
= 0;
775 if( vg_ui
.ignore_input_frames
){
776 vg_ui
.ignore_input_frames
--;
780 if( ui_click_down(UI_MOUSE_LEFT
)||ui_click_down(UI_MOUSE_MIDDLE
) ){
781 vg_ui
.mouse_click
[0] = vg_ui
.mouse
[0];
782 vg_ui
.mouse_click
[1] = vg_ui
.mouse
[1];
786 static u32
ui_colour( enum ui_scheme_colour id
)
788 return vg_ui
.scheme
[ id
];
791 /* get an appropriately contrasting colour given the base */
792 static u32
ui_colourcont( enum ui_scheme_colour id
)
794 if ( id
< k_ui_bg
+6 ) return ui_colour( k_ui_fg
);
795 else if( id
< k_ui_fg
) return ui_colour( k_ui_bg
+1 );
796 else if( id
< k_ui_hue
) return ui_colour( k_ui_bg
+3 );
797 else if( id
< k_ui_red
+k_ui_brighter
) return ui_colour( k_ui_fg
);
798 else return ui_colour( k_ui_fg
+1 );
801 static u32
ui_ntext( ui_rect rect
, const char *str
, u32 len
, ui_px scale
,
802 enum ui_align align
, u32 colour
)
805 if( colour
== 0 ) colour
= ui_colour( k_ui_fg
);
807 colour
&= 0x00ffffff;
809 const char *_c
= str
;
812 text_cursor
[0] = ui_text_aligned_x( str
, rect
, scale
, align
);
813 text_cursor
[1] = rect
[1];
814 text_cursor
[2] = 8*scale
;
815 text_cursor
[3] = 14*scale
;
817 u32 printed_chars
= 0;
819 if( align
& (k_ui_align_middle
|k_ui_align_bottom
) ){
820 ui_px height
= ui_text_string_height( str
) * scale
;
822 if( align
& k_ui_align_bottom
)
823 text_cursor
[1] += rect
[3]-height
;
825 text_cursor
[1] += (rect
[3]-height
)/2;
828 while( (c
= *(_c
++)) ){
829 if( printed_chars
>= len
){
831 text_cursor
[1] += 14*scale
;
832 text_cursor
[0] = ui_text_aligned_x( _c
, rect
, scale
, align
);
833 text_cursor
[0] -= UI_GLYPH_SPACING_X
*scale
;
836 u8 glyph_index
= '\x90';
837 glyph_base
[0] = glyph_index
& 0xf;
838 glyph_base
[1] = (glyph_index
-glyph_base
[0])>>4;
842 ui_fill_rect( text_cursor
, 0x00ffffff, (ui_px
[4])
850 text_cursor
[0] += UI_GLYPH_SPACING_X
*scale
;
854 text_cursor
[1] += 14*scale
;
855 text_cursor
[0] = ui_text_aligned_x( _c
, rect
, scale
, align
);
862 glyph_base
[0] = glyph_index
& 0xf;
863 glyph_base
[1] = (glyph_index
-glyph_base
[0])>>4;
869 if( ui_clip( rect
, text_cursor
, rect_char
) ){
870 ui_fill_rect( rect_char
, colour
, (ui_px
[4])
879 else if( c
== '\x1B' ){
883 for( int i
=0; i
<3; i
++ ){
889 case '0': colour
= ui_colour( k_ui_fg
); break;
890 case '3'|'0'<<8: colour
= ui_colour( k_ui_bg
); break;
891 case '3'|'1'<<8: colour
= ui_colour( k_ui_red
); break;
892 case '3'|'2'<<8: colour
= ui_colour( k_ui_green
); break;
893 case '3'|'3'<<8: colour
= ui_colour( k_ui_yellow
); break;
894 case '3'|'4'<<8: colour
= ui_colour( k_ui_blue
); break;
895 case '3'|'5'<<8: colour
= ui_colour( k_ui_purple
); break;
896 case '3'|'6'<<8: colour
= ui_colour( k_ui_aqua
); break;
897 case '3'|'7'<<8: colour
= 0xffffffff; break;
900 colour
&= 0x00ffffff;
904 colour_id
|= _c
[i
] << (i
*8);
914 else if( c
== '\t' ){
915 text_cursor
[0] += UI_GLYPH_SPACING_X
*scale
*4;
920 text_cursor
[0] += UI_GLYPH_SPACING_X
*scale
;
924 return printed_chars
;
927 static void ui_text( ui_rect rect
, const char *str
, ui_px scale
,
928 enum ui_align align
, u32 colour
)
930 ui_ntext( rect
, str
, 1024, scale
, align
, colour
);
933 static void ui_image( ui_rect rect
, GLuint image
)
935 ui_flush( k_ui_shader_colour
);
936 glActiveTexture( GL_TEXTURE0
);
937 glBindTexture( GL_TEXTURE_2D
, image
);
938 ui_fill_rect( rect
, 0xffffffff, (ui_px
[4]){ 0,128, 128, 0 } );
939 ui_flush( k_ui_shader_image
);
942 static u32
v4f_u32_colour( v4f colour
)
944 u32 r
= colour
[0] * 255.0f
,
945 g
= colour
[1] * 255.0f
,
946 b
= colour
[2] * 255.0f
,
947 a
= colour
[3] * 255.0f
;
949 return r
| (g
<<8) | (b
<<16) | (a
<<24);
952 static void ui_defocus_all(void)
954 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
958 vg_ui
.focused_control_id
= NULL
;
959 vg_ui
.focused_control_hit
= 0;
960 vg_ui
.focused_control_type
= k_ui_control_none
;
963 static int ui_colourbutton( ui_rect rect
, enum ui_scheme_colour colour
)
965 int clickup
= ui_click_up(UI_MOUSE_LEFT
),
966 click
= ui_clicking(UI_MOUSE_LEFT
) | clickup
,
967 target
= ui_inside_rect( rect
, vg_ui
.mouse_click
) && click
,
968 hover
= ui_inside_rect( rect
, vg_ui
.mouse
);
970 u32 col_base
= vg_ui
.scheme
[ colour
],
971 col_highlight
= vg_ui
.scheme
[ k_ui_fg
],
972 col_hover
= vg_ui
.scheme
[ colour
+ k_ui_brighter
];
974 if( vg_ui
.focused_control_type
!= k_ui_control_none
){
982 vg_ui
.cursor
= k_ui_cursor_hand
;
989 ui_fill( rect
, col_highlight
);
990 vg_ui
.ignore_input_frames
= 2;
991 rect_copy( rect
, vg_ui
.click_fader
);
993 rect_copy( rect
, vg_ui
.click_fader_end
);
994 vg_ui
.click_fader_end
[3] = 0;
995 ui_rect_center( rect
, vg_ui
.click_fader_end
);
997 vg_ui
.click_fade_opacity
= 1.0f
;
1002 ui_fill( rect
, col_highlight
);
1007 ui_fill( rect
, col_base
);
1008 ui_outline( rect
, 1, col_highlight
);
1013 ui_fill( rect
, col_base
);
1019 ui_fill( rect
, col_hover
);
1023 ui_fill( rect
, col_base
);
1029 static int ui_colourbutton_text( ui_rect rect
, const char *string
, ui_px scale
,
1030 enum ui_scheme_colour colour
)
1032 int result
= ui_colourbutton( rect
, colour
);
1033 ui_rect t
= { 0,0, ui_text_line_width( string
)*scale
, 14*scale
};
1034 ui_rect_center( rect
, t
);
1035 ui_text( t
, string
, scale
, k_ui_align_left
, ui_colourcont(colour
) );
1039 static int ui_button_text( ui_rect rect
, const char *string
, ui_px scale
)
1041 return ui_colourbutton_text( rect
, string
, scale
, k_ui_bg
+4 );
1044 static void ui_enum_post(void);
1045 static void ui_postrender(void)
1047 if( vg_ui
.click_fade_opacity
> 0.0f
){
1048 float scale
= vg_ui
.click_fade_opacity
;
1049 scale
= vg_maxf( 1.0f
/255.0f
, scale
*scale
);
1051 vg_ui
.click_fade_opacity
-= vg
.time_frame_delta
* 3.8f
;
1052 u32 colour
= (0x00ffffff & ui_colour(k_ui_fg
))|0x7f000000;
1054 v4f begin
, end
, dest
;
1055 for( int i
=0; i
<4; i
++ ){
1056 begin
[i
] = vg_ui
.click_fader
[i
];
1057 end
[i
] = vg_ui
.click_fader_end
[i
]+1;
1060 v4_lerp( end
, begin
, scale
, dest
);
1063 for( int i
=0; i
<4; i
++ ){
1067 ui_fill( rect
, colour
);
1070 if( vg_ui
.focused_control_type
== k_ui_control_dropdown
){
1074 ui_flush( k_ui_shader_colour
);
1076 if( !vg_ui
.focused_control_hit
){
1080 if( vg_ui
.wants_mouse
){
1081 SDL_SetWindowGrab( vg
.window
, SDL_FALSE
);
1082 SDL_SetRelativeMouseMode( SDL_FALSE
);
1085 SDL_SetWindowGrab( vg
.window
, SDL_TRUE
);
1086 SDL_SetRelativeMouseMode( SDL_TRUE
);
1089 SDL_SetCursor( vg_ui
.cursor_map
[ vg_ui
.cursor
] );
1093 static void ui_dev_colourview(void)
1095 ui_rect window
= {vg
.window_x
-256,0,256,vg
.window_y
}, swatch
;
1097 const char *names
[vg_list_size(vg_ui
.scheme
)] = {
1098 [k_ui_bg
] = "k_ui_bg", "k_ui_bg+1", "k_ui_bg+2", "k_ui_bg+3",
1099 "k_ui_bg+4", "k_ui_bg+5", "k_ui_bg+6", "k_ui_bg+7",
1101 [k_ui_fg
] = "k_ui_fg", "k_ui_fg+1", "k_ui_fg+2", "k_ui_fg+3",
1102 "k_ui_fg+4", "k_ui_fg+5", "k_ui_fg+6", "k_ui_fg+7",
1104 [k_ui_red
] = "k_ui_red", "k_ui_orange", "k_ui_yellow", "k_ui_green",
1105 "k_ui_aqua", "k_ui_blue", "k_ui_purple", "k_ui_gray",
1106 "k_ui_red+8","k_ui_orange+8","k_ui_yellow+8","k_ui_green+8",
1107 "k_ui_aqua+8","k_ui_blue+8","k_ui_purple+8","k_ui_gray+8" };
1110 ui_split_ratio( window
, k_ui_axis_v
, 0.5f
, 0, col
[0], col
[1] );
1112 for( int i
=0; i
<vg_list_size(vg_ui
.scheme
); i
++ ){
1113 int which
= (i
/8)%2;
1115 ui_split( col
[which
], k_ui_axis_h
, 24, 0, swatch
, col
[which
] );
1116 ui_fill( swatch
, ui_colour(i
) );
1119 ui_text(swatch
, names
[i
], 1, k_ui_align_middle_left
, ui_colourcont(i
));
1125 * -----------------------------------------------------------------------------
1128 static int ui_checkbox( ui_rect rect
, const char *str_label
, int *data
)
1131 ui_split( rect
, k_ui_axis_v
, -rect
[3], 0, label
, box
);
1132 ui_text( label
, str_label
, 1, k_ui_align_middle_left
, 0 );
1134 int changed
= ui_colourbutton( box
, k_ui_bg
);
1136 *data
= (*data
) ^ 0x1;
1139 ui_rect_pad( box
, (ui_px
[2]){4,4} );
1140 ui_fill( box
, ui_colour( k_ui_orange
) );
1148 * -----------------------------------------------------------------------------
1152 * unfortunately no return value since we only find out that event in the
1155 static void ui_enum( ui_rect rect
, const char *str_label
,
1156 struct ui_dropdown_opt
*options
, u32 len
,
1157 struct ui_dropdown_value
*value
)
1160 ui_split( rect
, k_ui_axis_v
, ui_text_line_width( str_label
) + 8,
1162 ui_text( label
, str_label
, 1, k_ui_align_middle_left
, 0 );
1164 if( ui_button_text( box
, options
[ value
->index
].alias
, 1 ) ){
1165 vg_ui
.focused_control_type
= k_ui_control_dropdown
;
1166 vg_ui
.ptr_dropdown
= value
;
1167 vg_ui
.dropdown
.option_count
= len
;
1168 vg_ui
.dropdown
.options
= options
;
1169 rect_copy( box
, vg_ui
.dropdown
.rect
);
1173 static void ui_enum_post(void)
1176 rect_copy( vg_ui
.dropdown
.rect
, drawer
);
1177 drawer
[3] *= vg_ui
.dropdown
.option_count
;
1180 int clickany
= ui_click_up(UI_MOUSE_LEFT
|UI_MOUSE_RIGHT
|UI_MOUSE_MIDDLE
),
1181 hover
= ui_inside_rect( drawer
, vg_ui
.mouse
);
1183 if( clickany
&& !hover
){
1188 vg_ui
.focused_control_type
= k_ui_control_none
;
1189 struct ui_dropdown_value
*value
= vg_ui
.ptr_dropdown
;
1191 for( u32 i
=0; i
<vg_ui
.dropdown
.option_count
; i
++ ){
1193 ui_split( drawer
, k_ui_axis_h
, vg_ui
.dropdown
.rect
[3], 1, button
,drawer
);
1195 enum ui_scheme_colour colour
= k_ui_bg
+3;
1196 if( i
== value
->index
) colour
= k_ui_orange
;
1198 if( ui_colourbutton_text( button
, vg_ui
.dropdown
.options
[i
].alias
, 1,
1201 value
->value
= vg_ui
.dropdown
.options
[i
].value
;
1207 vg_ui
.focused_control_type
= k_ui_control_dropdown
;
1210 vg_ui
.focused_control_hit
= 1;
1215 * -----------------------------------------------------------------------------
1218 static void _ui_textbox_make_selection( int *start
, int *end
)
1220 *start
= VG_MIN( vg_ui
.textbox
.cursor_pos
, vg_ui
.textbox
.cursor_user
);
1221 *end
= VG_MAX( vg_ui
.textbox
.cursor_pos
, vg_ui
.textbox
.cursor_user
);
1224 static void _ui_textbox_move_cursor( int *cursor0
, int *cursor1
,
1225 int dir
, int snap_together
)
1227 *cursor0
= VG_MAX( 0, vg_ui
.textbox
.cursor_user
+ dir
);
1230 VG_MIN( vg_ui
.textbox
.len
-1, strlen( vg_ui
.textbuf
)),
1234 *cursor1
= *cursor0
;
1237 static int _ui_textbox_makeroom( int datastart
, int length
)
1239 int move_to
= VG_MIN( datastart
+length
, vg_ui
.textbox
.len
-1 );
1240 int move_amount
= strlen( vg_ui
.textbuf
)-datastart
;
1241 int move_end
= VG_MIN( move_to
+move_amount
, vg_ui
.textbox
.len
-1 );
1242 move_amount
= move_end
-move_to
;
1245 memmove( &vg_ui
.textbuf
[ move_to
],
1246 &vg_ui
.textbuf
[ datastart
],
1249 vg_ui
.textbuf
[ move_end
] = '\0';
1251 return VG_MIN( length
, vg_ui
.textbox
.len
-datastart
-1 );
1254 static int _ui_textbox_delete_char( int direction
)
1257 _ui_textbox_make_selection( &start
, &end
);
1259 /* There is no selection */
1261 if( direction
== 1 ) end
= VG_MIN( end
+1, strlen( vg_ui
.textbuf
) );
1262 else if( direction
== -1 ) start
= VG_MAX( start
-1, 0 );
1265 /* Still no selction, no need to do anything */
1269 /* Copy the end->terminator to start */
1270 int remaining_length
= strlen( vg_ui
.textbuf
)+1-end
;
1271 memmove( &vg_ui
.textbuf
[ start
],
1272 &vg_ui
.textbuf
[ end
],
1277 static void _ui_textbox_to_clipboard(void)
1280 _ui_textbox_make_selection( &start
, &end
);
1284 memcpy( buffer
, &vg_ui
.textbuf
[ start
], end
-start
);
1285 buffer
[ end
-start
] = 0x00;
1286 SDL_SetClipboardText( buffer
);
1290 static void _ui_textbox_clipboard_paste(void)
1292 if( !SDL_HasClipboardText() )
1295 char *text
= SDL_GetClipboardText();
1300 int datastart
= _ui_textbox_delete_char( 0 );
1301 int length
= strlen( text
);
1302 int cpylength
= _ui_textbox_makeroom( datastart
, length
);
1304 memcpy( vg_ui
.textbuf
+ datastart
, text
, cpylength
);
1305 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1306 &vg_ui
.textbox
.cursor_pos
, cpylength
, 1 );
1310 static void _ui_textbox_put_char( char c
)
1312 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char(0);
1314 if( _ui_textbox_makeroom( vg_ui
.textbox
.cursor_user
, 1 ) )
1315 vg_ui
.textbuf
[ vg_ui
.textbox
.cursor_user
] = c
;
1317 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1318 &vg_ui
.textbox
.cursor_pos
, 1, 1 );
1321 /* Receed secondary cursor */
1322 static void _ui_textbox_left_select(void)
1324 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, -1, 0 );
1327 /* Match and receed both cursors */
1328 static void _ui_textbox_left(void)
1330 int cursor_diff
= vg_ui
.textbox
.cursor_pos
- vg_ui
.textbox
.cursor_user
? 0: 1;
1332 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1333 &vg_ui
.textbox
.cursor_pos
, -cursor_diff
, 1 );
1336 static void _ui_textbox_up(void)
1338 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
){
1339 int line_begin
= vg_ui
.textbox
.cursor_user
;
1341 while( line_begin
){
1342 if( vg_ui
.textbuf
[ line_begin
-1 ] == '\n' ){
1350 int line_above_begin
= line_begin
-1;
1352 while( line_above_begin
){
1353 if( vg_ui
.textbuf
[ line_above_begin
-1 ] == '\n' ){
1357 line_above_begin
--;
1360 int offset
= vg_ui
.textbox
.cursor_user
- line_begin
,
1361 line_length_above
= line_begin
- line_above_begin
-1;
1363 offset
= VG_MIN( line_length_above
, offset
);
1365 vg_ui
.textbox
.cursor_user
= line_above_begin
+offset
;
1366 vg_ui
.textbox
.cursor_pos
= line_above_begin
+offset
;
1369 vg_ui
.textbox
.cursor_user
= line_begin
;
1370 vg_ui
.textbox
.cursor_pos
= line_begin
;
1374 if( vg_ui
.textbox
.callbacks
.up
){
1375 vg_ui
.textbox
.callbacks
.up( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1380 static void _ui_textbox_down(void)
1382 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
){
1383 int line_begin
= vg_ui
.textbox
.cursor_user
;
1385 while( line_begin
){
1386 if( vg_ui
.textbuf
[ line_begin
-1 ] == '\n' ){
1393 int line_below_begin
= vg_ui
.textbox
.cursor_user
;
1396 if( vg_ui
.textbuf
[ line_below_begin
] == '\0' ){
1397 vg_ui
.textbox
.cursor_user
= line_below_begin
;
1398 vg_ui
.textbox
.cursor_pos
= line_below_begin
;
1402 if( vg_ui
.textbuf
[ line_below_begin
] == '\n' ){
1403 line_below_begin
++;
1407 line_below_begin
++;
1410 int line_below_end
= line_below_begin
;
1412 if( vg_ui
.textbuf
[ line_below_end
] == '\0' ||
1413 vg_ui
.textbuf
[ line_below_end
] == '\n' ){
1420 int offset
= vg_ui
.textbox
.cursor_user
- line_begin
,
1421 line_length_below
= line_below_end
- line_below_begin
-1;
1423 offset
= VG_MIN( line_length_below
, offset
);
1425 vg_ui
.textbox
.cursor_user
= line_below_begin
+offset
;
1426 vg_ui
.textbox
.cursor_pos
= line_below_begin
+offset
;
1429 if( vg_ui
.textbox
.callbacks
.down
){
1430 vg_ui
.textbox
.callbacks
.down( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1435 static void _ui_textbox_right_select(void)
1437 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, 1, 0 );
1440 static void _ui_textbox_right(void)
1442 int cursor_diff
= vg_ui
.textbox
.cursor_pos
- vg_ui
.textbox
.cursor_user
? 0: 1;
1444 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1445 &vg_ui
.textbox
.cursor_pos
, +cursor_diff
, 1 );
1448 static void _ui_textbox_backspace(void)
1450 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1451 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char( -1 );
1452 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1454 if( vg_ui
.textbox
.callbacks
.change
){
1455 vg_ui
.textbox
.callbacks
.change( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1460 static void _ui_textbox_delete(void)
1462 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1463 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char( 1 );
1464 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1466 if( vg_ui
.textbox
.callbacks
.change
){
1467 vg_ui
.textbox
.callbacks
.change( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1472 static void _ui_textbox_home_select(void)
1474 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, -10000, 0 );
1477 static void _ui_textbox_home(void)
1479 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1480 &vg_ui
.textbox
.cursor_pos
, -10000, 1 );
1483 static void _ui_textbox_end_select(void)
1485 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, 10000, 0 );
1488 static void _ui_textbox_end(void)
1490 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1491 &vg_ui
.textbox
.cursor_pos
,
1492 vg_ui
.textbox
.len
-1, 1 );
1495 static void _ui_textbox_select_all(void)
1497 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, 10000, 0);
1498 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_pos
, NULL
, -10000, 0);
1501 static void _ui_textbox_cut(void)
1503 _ui_textbox_to_clipboard();
1504 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char(0);
1505 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1508 static void _ui_textbox_enter(void)
1510 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1511 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
){
1512 _ui_textbox_put_char( '\n' );
1515 if( !(vg_ui
.textbox
.flags
& UI_TEXTBOX_AUTOFOCUS
) )
1519 if( vg_ui
.textbox
.callbacks
.enter
){
1520 vg_ui
.textbox
.callbacks
.enter( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1526 * based on a visual character coordinate relative to the anchor of the textbox,
1527 * this works out the linear place in the buffer that coordinate maps to
1529 * input coordinates go in co[0], co[1], and the result index is in co[2]
1531 static void _ui_textbox_calc_index_from_grid( int co
[3], int wrap_length
)
1536 while( (c
= vg_ui
.textbuf
[i
[2]]) ){
1537 if( i
[1]==co
[1] && i
[0]>=co
[0] ) break;
1539 if( i
[0] >= wrap_length
){
1544 if( c
>= 32 && c
<= 126 ){
1548 else if( c
== '\n' ){
1551 if( i
[1] > co
[1] ) break;
1565 * based on the index specied in co[2], work out the visual character
1566 * coordinates and store them in co[0], co[1]
1568 static void _ui_textbox_index_calc_coords( int co
[3], int wrap_length
)
1576 while( (c
= vg_ui
.textbuf
[i
++]) ){
1577 if( i
> co
[2] ) break;
1578 if( co
[0] >= wrap_length
){
1582 if( c
>= 32 && c
<= 126 ) co
[0] ++;
1583 else if( c
== '\n' ){
1591 * calculate the number of characters remaining until either:
1592 * - the wrap_length limit is hit
1593 * - end of the line/string
1595 * index must be fully populated with visual X/Y, and linear index
1597 static int _ui_textbox_run_remaining( int index
[3], int wrap_length
)
1599 int i
=0, printed_chars
=0;
1601 while( (c
= vg_ui
.textbuf
[index
[2] + (i
++)]) ){
1602 if( index
[0]+i
>= wrap_length
) break;
1603 if( c
>= 32 && c
<= 126 ) printed_chars
++;
1604 else if( c
== '\n' ) break;
1607 return printed_chars
+1;
1610 static int ui_textbox( ui_rect rect
, char *buf
, u32 len
, u32 flags
,
1611 struct ui_textbox_callbacks
*callbacks
)
1613 int clickup
= ui_click_up(UI_MOUSE_LEFT
),
1614 clickdown
= ui_click_down(UI_MOUSE_LEFT
),
1615 click
= ui_clicking(UI_MOUSE_LEFT
) | clickup
,
1616 target
= ui_inside_rect( rect
, vg_ui
.mouse_click
) && click
,
1617 hover
= ui_inside_rect( rect
, vg_ui
.mouse
);
1619 /* allow instant transitions from textbox->textbox */
1620 if( (vg_ui
.focused_control_type
!= k_ui_control_none
) &&
1621 (vg_ui
.focused_control_type
!= k_ui_control_textbox
) ){
1629 u32 col_base
= ui_colour( k_ui_bg
),
1630 col_highlight
= ui_colour( k_ui_fg
),
1631 col_cursor
= (0x00ffffff & ui_colour(k_ui_fg
))|0x7f000000;
1636 rect_copy( rect
, text_rect
);
1638 if( flags
& UI_TEXTBOX_MULTILINE
) text_rect
[3] = rect
[3]-16;
1639 else text_rect
[3] = 14;
1642 ui_rect_center( rect
, text_rect
);
1644 ui_px wrap_length
= 1024;
1646 if( flags
& UI_TEXTBOX_WRAP
)
1647 wrap_length
= text_rect
[2] / UI_GLYPH_SPACING_X
;
1650 vg_ui
.cursor
= k_ui_cursor_ibeam
;
1653 if( vg_ui
.focused_control_id
== buf
){
1654 ui_fill( rect
, col_base
);
1655 ui_ntext( text_rect
, buf
, wrap_length
, 1, k_ui_align_left
, 0 );
1657 if( !(flags
& UI_TEXTBOX_AUTOFOCUS
) && ((clickup
||clickdown
) && !target
)){
1661 vg_ui
.focused_control_hit
= 1;
1662 if( click
&& target
){
1664 (vg_ui
.mouse_click
[0] - text_rect
[0]) / UI_GLYPH_SPACING_X
,
1665 (vg_ui
.mouse_click
[1] - text_rect
[1]) / 14,
1669 (vg_ui
.mouse
[0] - text_rect
[0]) / UI_GLYPH_SPACING_X
,
1670 (vg_ui
.mouse
[1] - text_rect
[1]) / 14,
1674 if( flags
& UI_TEXTBOX_MULTILINE
){
1675 _ui_textbox_calc_index_from_grid( p0
, wrap_length
);
1676 _ui_textbox_calc_index_from_grid( p1
, wrap_length
);
1678 vg_ui
.textbox
.cursor_pos
= p0
[2];
1679 vg_ui
.textbox
.cursor_user
= p1
[2];
1682 int max
= strlen( buf
);
1683 vg_ui
.textbox
.cursor_pos
= VG_MAX( 0, VG_MIN( max
, p0
[0] )),
1684 vg_ui
.textbox
.cursor_user
= VG_MAX( 0, VG_MIN( max
, p1
[0] ));
1688 ui_outline( rect
, -2, vg_ui
.scheme
[ k_ui_orange
] );
1692 int c0
= vg_ui
.textbox
.cursor_pos
,
1693 c1
= vg_ui
.textbox
.cursor_user
,
1694 start
= VG_MIN( c0
, c1
),
1695 end
= VG_MAX( c0
, c1
),
1698 if( flags
& (UI_TEXTBOX_MULTILINE
|UI_TEXTBOX_WRAP
) ){
1700 int pos
[3], remaining
= chars
;
1703 _ui_textbox_index_calc_coords( pos
, wrap_length
);
1706 cursor
[0] = text_rect
[0] + pos
[0]*UI_GLYPH_SPACING_X
-1;
1707 cursor
[1] = text_rect
[1] + pos
[1]*14;
1710 ui_fill( cursor
, col_cursor
);
1711 rect_copy( cursor
, vg_ui
.click_fader_end
);
1715 int run
= _ui_textbox_run_remaining( pos
, wrap_length
);
1716 run
= VG_MIN( run
, remaining
);
1718 cursor
[0] = text_rect
[0] + pos
[0]*UI_GLYPH_SPACING_X
-1;
1719 cursor
[1] = text_rect
[1] + pos
[1]*14;
1720 cursor
[2] = (float)(run
)*(float)UI_GLYPH_SPACING_X
;
1723 ui_fill( cursor
, col_cursor
);
1730 rect_copy( cursor
, vg_ui
.click_fader_end
);
1734 cursor
[0] = text_rect
[0] + start
*UI_GLYPH_SPACING_X
-1;
1735 cursor
[1] = text_rect
[1];
1742 cursor
[2] = (float)(chars
)*(float)UI_GLYPH_SPACING_X
;
1745 if( (vg_ui
.click_fade_opacity
<=0.0f
) &&
1746 ui_clip( rect
, cursor
, cursor
) ){
1747 ui_fill( cursor
, col_cursor
);
1750 rect_copy( cursor
, vg_ui
.click_fader_end
);
1757 if( click
|| (flags
& UI_TEXTBOX_AUTOFOCUS
) ){
1758 if( (target
&& hover
) || (flags
& UI_TEXTBOX_AUTOFOCUS
) ){
1761 ui_fill( rect
, col_highlight
);
1762 vg_ui
.ignore_input_frames
= 2;
1763 rect_copy( rect
, vg_ui
.click_fader
);
1764 rect_copy( rect
, vg_ui
.click_fader_end
);
1766 vg_ui
.click_fade_opacity
= 1.0f
;
1767 vg_ui
.textbuf
= buf
;
1768 vg_ui
.focused_control_hit
= 1;
1769 vg_ui
.focused_control_type
= k_ui_control_textbox
;
1770 vg_ui
.textbox
.len
= len
;
1771 vg_ui
.textbox
.flags
= flags
;
1772 vg_ui
.textbox
.cursor_pos
= 0;
1773 vg_ui
.textbox
.cursor_user
= 0;
1776 vg_ui
.textbox
.callbacks
= *callbacks
;
1779 vg_ui
.textbox
.callbacks
.change
= NULL
;
1780 vg_ui
.textbox
.callbacks
.down
= NULL
;
1781 vg_ui
.textbox
.callbacks
.up
= NULL
;
1782 vg_ui
.textbox
.callbacks
.enter
= NULL
;
1785 SDL_StartTextInput();
1789 ui_fill( rect
, col_base
);
1792 ui_outline( rect
, -1, col_highlight
);
1795 ui_ntext( text_rect
, buf
, wrap_length
, 1, k_ui_align_left
, 0 );
1801 * -----------------------------------------------------------------------------
1807 static void _ui_proc_key( SDL_Keysym ev
)
1809 if( vg_ui
.focused_control_type
!= k_ui_control_textbox
){
1813 struct textbox_mapping
1818 void (*handler
)(void);
1822 { 0, SDLK_LEFT
, _ui_textbox_left
},
1823 { KMOD_SHIFT
, SDLK_LEFT
, _ui_textbox_left_select
},
1824 { 0, SDLK_RIGHT
, _ui_textbox_right
},
1825 { KMOD_SHIFT
, SDLK_RIGHT
, _ui_textbox_right_select
},
1826 { 0, SDLK_DOWN
, _ui_textbox_down
},
1827 { 0, SDLK_UP
, _ui_textbox_up
},
1828 { 0, SDLK_BACKSPACE
, _ui_textbox_backspace
},
1829 { KMOD_SHIFT
, SDLK_BACKSPACE
, _ui_textbox_backspace
},
1830 { KMOD_CTRL
, SDLK_BACKSPACE
, _ui_textbox_backspace
},
1831 { 0, SDLK_DELETE
, _ui_textbox_delete
},
1832 { 0, SDLK_HOME
, _ui_textbox_home
},
1833 { KMOD_SHIFT
, SDLK_HOME
, _ui_textbox_home_select
},
1834 { 0, SDLK_END
, _ui_textbox_end
},
1835 { KMOD_SHIFT
, SDLK_END
, _ui_textbox_end_select
},
1836 { KMOD_CTRL
, SDLK_a
, _ui_textbox_select_all
},
1837 { KMOD_CTRL
, SDLK_c
, _ui_textbox_to_clipboard
},
1838 { KMOD_CTRL
, SDLK_x
, _ui_textbox_cut
},
1839 { KMOD_CTRL
, SDLK_v
, _ui_textbox_clipboard_paste
},
1840 { 0, SDLK_RETURN
, _ui_textbox_enter
},
1841 { 0, SDLK_ESCAPE
, ui_defocus_all
},
1846 if( ev
.mod
& KMOD_SHIFT
)
1849 if( ev
.mod
& KMOD_CTRL
)
1852 if( ev
.mod
& KMOD_ALT
)
1855 for( int i
=0; i
<vg_list_size( mappings
); i
++ ){
1856 struct textbox_mapping
*mapping
= &mappings
[i
];
1858 if( mapping
->key
== ev
.sym
){
1859 if( mapping
->mod
== 0 ){
1865 else if( (mod
& mapping
->mod
) == mapping
->mod
){
1874 * Callback for text entry mode
1876 VG_STATIC
void ui_proc_utf8( const char *text
)
1878 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1879 const char *ptr
= text
;
1882 if( *ptr
!= '`' ) _ui_textbox_put_char( *ptr
);
1886 if( vg_ui
.textbox
.callbacks
.change
){
1887 vg_ui
.textbox
.callbacks
.change( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1892 #endif /* VG_IMGUI_H */