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
102 u32 focused_control_hit
;
103 enum ui_control_type
{
105 k_ui_control_textbox
,
107 focused_control_type
;
110 int cursor_user
, cursor_pos
;
114 struct ui_textbox_callbacks
{
115 void (*enter
)( char *, u32
),
116 (*up
)( char *, u32
),
117 (*down
)( char *, u32
),
118 (*change
)( char *, u32
);
124 GLuint tex_glyphs
, vao
, vbo
, ebo
;
126 ui_px mouse
[2], mouse_click
[2];
128 u32 ignore_input_frames
;
131 ui_rect click_fader
, click_fader_end
;
132 float click_fade_opacity
;
144 SDL_Cursor
*cursor_map
[ k_ui_cursor_max
];
148 [ k_ui_bg
+0 ] = UI_RGB( 0x1d2021 ),
149 [ k_ui_bg
+1 ] = UI_RGB( 0x282828 ),
150 [ k_ui_bg
+2 ] = UI_RGB( 0x3c3836 ),
151 [ k_ui_bg
+3 ] = UI_RGB( 0x504945 ),
152 [ k_ui_bg
+4 ] = UI_RGB( 0x665c54 ),
153 [ k_ui_bg
+5 ] = UI_RGB( 0x7c6f64 ),
154 [ k_ui_bg
+6 ] = UI_RGB( 0x928374 ),
155 [ k_ui_bg
+7 ] = UI_RGB( 0xa89984 ),
157 [ k_ui_fg
+0 ] = UI_RGB( 0xebdbb2 ),
158 [ k_ui_fg
+1 ] = UI_RGB( 0xfbf1c7 ),
159 [ k_ui_fg
+2 ] = UI_RGB( 0xd5c4a1 ),
160 [ k_ui_fg
+3 ] = UI_RGB( 0xbdae93 ),
161 [ k_ui_fg
+4 ] = UI_RGB( 0xa89984 ),
162 [ k_ui_fg
+5 ] = UI_RGB( 0x000000 ),
163 [ k_ui_fg
+6 ] = UI_RGB( 0x000000 ),
164 [ k_ui_fg
+7 ] = UI_RGB( 0x000000 ),
166 [ k_ui_red
] = UI_RGB( 0xcc241d ),
167 [ k_ui_orange
] = UI_RGB( 0xd65d0e ),
168 [ k_ui_yellow
] = UI_RGB( 0xd79921 ),
169 [ k_ui_green
] = UI_RGB( 0x98971a ),
170 [ k_ui_aqua
] = UI_RGB( 0x689d6a ),
171 [ k_ui_blue
] = UI_RGB( 0x458588 ),
172 [ k_ui_purple
] = UI_RGB( 0xb16286 ),
173 [ k_ui_gray
] = UI_RGB( 0x928374 ),
174 [ k_ui_red
+ k_ui_brighter
] = UI_RGB( 0xfb4934 ),
175 [ k_ui_orange
+ k_ui_brighter
] = UI_RGB( 0xfe8019 ),
176 [ k_ui_yellow
+ k_ui_brighter
] = UI_RGB( 0xfabd2f ),
177 [ k_ui_green
+ k_ui_brighter
] = UI_RGB( 0xb8bb26 ),
178 [ k_ui_aqua
+ k_ui_brighter
] = UI_RGB( 0x8ec07c ),
179 [ k_ui_blue
+ k_ui_brighter
] = UI_RGB( 0x83a598 ),
180 [ k_ui_purple
+ k_ui_brighter
] = UI_RGB( 0xd3869b ),
181 [ k_ui_gray
+ k_ui_brighter
] = UI_RGB( 0xa89984 ),
185 static struct vg_shader _shader_ui
=
193 "layout (location=0) in vec2 a_co;"
194 "layout (location=1) in vec2 a_uv;"
195 "layout (location=2) in vec4 a_colour;"
198 "out vec2 aTexCoords;"
204 "gl_Position = vec4( uPv * vec3( a_co, 1.0 ), 1.0 );"
205 "aTexCoords = a_uv * 0.0078125;"
206 "aColour = a_colour;"
215 "uniform sampler2D uTexGlyphs;"
216 "out vec4 FragColor;"
218 "in vec2 aTexCoords;"
223 "vec2 rand_hash22( vec2 p )"
225 "vec3 p3 = fract(vec3(p.xyx) * 213.8976123);"
226 "p3 += dot(p3, p3.yzx+19.19);"
227 "return fract(vec2((p3.x + p3.y)*p3.z, (p3.x+p3.z)*p3.y));"
232 "vec4 diffuse = aColour;"
234 "if( diffuse.a == 0.0 )"
236 "diffuse.a = texture( uTexGlyphs, aTexCoords ).r;"
239 "FragColor = diffuse;"
244 static struct vg_shader _shader_ui_image
=
246 .name
= "[vg] ui_image",
252 "layout (location=0) in vec2 a_co;"
253 "layout (location=1) in vec2 a_uv;"
254 "layout (location=2) in vec4 a_colour;"
257 "out vec2 aTexCoords;"
263 "gl_Position = vec4( uPv * vec3( a_co, 1.0 ), 1.0 );"
264 "aTexCoords = a_uv * 0.0078125;"
265 "aColour = a_colour;"
274 "uniform sampler2D uTexImage;"
275 "out vec4 FragColor;"
277 "in vec2 aTexCoords;"
283 "vec4 colour = texture( uTexImage, aTexCoords );"
287 "float value = dot(vec4(1.0),colour)*0.25;"
289 "vec3 col = vec3(pow(cos(value*3.14159265*2.0)*0.5+0.5,0.5))"
290 "* vec3(step(value,0.5),0.3,step(1.0-value,0.5));"
291 "FragColor = vec4( col*4.0, 1.0 );"
294 "FragColor = colour;"
298 #define UI_GLYPH_SPACING_X 8
300 VG_STATIC
void _vg_ui_init(void)
302 if( !vg_shader_compile( &_shader_ui
) ||
303 !vg_shader_compile( &_shader_ui_image
) )
304 vg_fatal_error( "Failed to compile ui shader" );
308 * ----------------------------------------
311 vg_ui
.max_indices
= 20000;
312 vg_ui
.max_verts
= 30000;
314 /* Generate the buffer we are gonna be drawing to */
315 glGenVertexArrays( 1, &vg_ui
.vao
);
316 glGenBuffers( 1, &vg_ui
.vbo
);
317 glGenBuffers( 1, &vg_ui
.ebo
);
319 glBindVertexArray( vg_ui
.vao
);
320 glBindBuffer( GL_ARRAY_BUFFER
, vg_ui
.vbo
);
322 glBufferData( GL_ARRAY_BUFFER
,
323 vg_ui
.max_verts
* sizeof( struct ui_vert
),
324 NULL
, GL_DYNAMIC_DRAW
);
325 glBindVertexArray( vg_ui
.vao
);
327 glBindBuffer( GL_ELEMENT_ARRAY_BUFFER
, vg_ui
.ebo
);
328 glBufferData( GL_ELEMENT_ARRAY_BUFFER
,
329 vg_ui
.max_indices
* sizeof( u16
), NULL
, GL_DYNAMIC_DRAW
);
334 u32
const stride
= sizeof( struct ui_vert
);
337 glVertexAttribPointer( 0, 2, GL_SHORT
, GL_FALSE
, stride
,
338 (void *)offsetof( struct ui_vert
, co
) );
339 glEnableVertexAttribArray( 0 );
342 glVertexAttribPointer( 1, 2, GL_UNSIGNED_BYTE
, GL_FALSE
, stride
,
343 (void *)offsetof( struct ui_vert
, uv
) );
344 glEnableVertexAttribArray( 1 );
347 glVertexAttribPointer( 2, 4, GL_UNSIGNED_BYTE
, GL_TRUE
, stride
,
348 (void *)offsetof( struct ui_vert
, colour
) );
349 glEnableVertexAttribArray( 2 );
353 /* Alloc RAM default context */
354 u32 vert_size
= vg_ui
.max_verts
*sizeof(struct ui_vert
),
355 inds_size
= vg_align8( vg_ui
.max_indices
*sizeof(u16
) );
357 vg_ui
.vertex_buffer
= vg_linear_alloc( vg_mem
.rtmemory
, vert_size
);
358 vg_ui
.indice_buffer
= vg_linear_alloc( vg_mem
.rtmemory
, inds_size
);
361 * -----------------------------------------------------
364 /* Load default font */
366 #include "vg/vg_pxfont_thin.h"
369 u32 pixels
= 0, total
= 256*256, data
= 0;
372 while( pixels
< total
){
373 for( int b
= 31; b
>= 0; b
-- ){
374 image
[ pixels
++ ] = (compressed
[data
] & (0x1u
<< b
))? 0xffu
: 0x00u
;
376 if( pixels
>= total
){
384 glGenTextures( 1, &vg_ui
.tex_glyphs
);
385 glBindTexture( GL_TEXTURE_2D
, vg_ui
.tex_glyphs
);
386 glTexImage2D( GL_TEXTURE_2D
, 0, GL_R8
, 256, 256, 0,
387 GL_RED
, GL_UNSIGNED_BYTE
, image
);
390 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_WRAP_S
, GL_CLAMP_TO_EDGE
);
391 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_WRAP_T
, GL_CLAMP_TO_EDGE
);
392 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_MIN_FILTER
, GL_NEAREST
);
393 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_MAG_FILTER
, GL_NEAREST
);
397 * ---------------------------------------------------------------
400 vg_ui
.cursor_map
[ k_ui_cursor_default
] =
401 SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_ARROW
);
402 vg_ui
.cursor_map
[ k_ui_cursor_hand
] =
403 SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_HAND
);
404 vg_ui
.cursor_map
[ k_ui_cursor_ibeam
] =
405 SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_IBEAM
);
413 static void rect_copy( ui_rect a
, ui_rect b
)
415 for( int i
=0; i
<4; i
++ )
419 VG_STATIC
void ui_flush( enum ui_shader shader
)
421 u32 vertex_offset
= vg_ui
.vert_start
*sizeof(ui_vert
),
422 vertex_count
= vg_ui
.cur_vert
-vg_ui
.vert_start
,
423 vertex_size
= vertex_count
*sizeof(ui_vert
),
425 indice_offset
= vg_ui
.indice_start
*sizeof(u16
),
426 indice_count
= vg_ui
.cur_indice
-vg_ui
.indice_start
,
427 indice_size
= indice_count
* sizeof(u16
);
429 if( !vertex_size
|| !indice_size
)
432 glBindVertexArray( vg_ui
.vao
);
433 glBindBuffer( GL_ARRAY_BUFFER
, vg_ui
.vbo
);
434 glBufferSubData( GL_ARRAY_BUFFER
, vertex_offset
, vertex_size
,
435 vg_ui
.vertex_buffer
+vg_ui
.vert_start
);
437 glBindBuffer( GL_ELEMENT_ARRAY_BUFFER
, vg_ui
.ebo
);
438 glBufferSubData( GL_ELEMENT_ARRAY_BUFFER
, indice_offset
, indice_size
,
439 vg_ui
.indice_buffer
+vg_ui
.indice_start
);
441 glDisable( GL_DEPTH_TEST
);
442 glEnable( GL_BLEND
);
443 glBlendFunc( GL_SRC_ALPHA
, GL_ONE_MINUS_SRC_ALPHA
);
444 glBlendEquation( GL_FUNC_ADD
);
446 m3x3f view
= M3X3_IDENTITY
;
447 m3x3_translate( view
, (v3f
){ -1.0f
, 1.0f
, 0.0f
} );
448 m3x3_scale( view
, (v3f
){ 1.0f
/((float)vg
.window_x
*0.5f
),
449 -1.0f
/((float)vg
.window_y
*0.5f
), 1.0f
} );
451 if( shader
== k_ui_shader_colour
){
452 glUseProgram( _shader_ui
.id
);
454 glUniformMatrix3fv( glGetUniformLocation( _shader_ui
.id
, "uPv" ), 1,
455 GL_FALSE
, (float *)view
);
457 glActiveTexture( GL_TEXTURE0
);
458 glBindTexture( GL_TEXTURE_2D
, vg_ui
.tex_glyphs
);
459 glUniform1i( glGetUniformLocation( _shader_ui
.id
, "uTexGlyphs" ), 0 );
461 else if( shader
== k_ui_shader_image
){
462 glUseProgram( _shader_ui_image
.id
);
463 glUniformMatrix3fv( glGetUniformLocation( _shader_ui_image
.id
, "uPv" ), 1,
464 GL_FALSE
, (float *)view
);
465 glUniform1i( glGetUniformLocation(_shader_ui_image
.id
,"uTexImage"), 0 );
468 vg_fatal_error( "Invalid UI shader (%d)\n", shader
);
470 glDrawElements( GL_TRIANGLES
, indice_count
, GL_UNSIGNED_SHORT
,
471 (void *)(vg_ui
.indice_start
*sizeof(u16
)) );
473 glDisable( GL_BLEND
);
475 vg_ui
.indice_start
= vg_ui
.cur_indice
;
476 vg_ui
.vert_start
= vg_ui
.cur_vert
;
479 static void ui_fill_rect( ui_rect rect
, u32 colour
, ui_px uv
[4] )
481 /* this if far from ideal but stops us from crashing */
482 if( (vg_ui
.cur_vert
+ 4 > vg_ui
.max_verts
) ||
483 (vg_ui
.cur_indice
+ 6 > vg_ui
.max_indices
))
486 struct ui_vert
*vertices
= &vg_ui
.vertex_buffer
[ vg_ui
.cur_vert
];
487 u16
*indices
= &vg_ui
.indice_buffer
[ vg_ui
.cur_indice
];
489 for( int i
=0; i
<4; i
++ ){
490 vertices
[i
].colour
= colour
;
493 vertices
[0].co
[0] = rect
[0];
494 vertices
[0].co
[1] = rect
[1];
495 vertices
[0].uv
[0] = uv
[0];
496 vertices
[0].uv
[1] = uv
[1];
497 vertices
[1].co
[0] = rect
[0]+rect
[2];
498 vertices
[1].co
[1] = rect
[1];
499 vertices
[1].uv
[0] = uv
[2];
500 vertices
[1].uv
[1] = uv
[1];
501 vertices
[2].co
[0] = rect
[0]+rect
[2];
502 vertices
[2].co
[1] = rect
[1]+rect
[3];
503 vertices
[2].uv
[0] = uv
[2];
504 vertices
[2].uv
[1] = uv
[3];
505 vertices
[3].co
[0] = rect
[0];
506 vertices
[3].co
[1] = rect
[1]+rect
[3];
507 vertices
[3].uv
[0] = uv
[0];
508 vertices
[3].uv
[1] = uv
[3];
509 u16 ind_start
= vg_ui
.cur_vert
;
511 u16 start
= vg_ui
.cur_vert
;
512 u32 mesh
[] = { 0,2,1, 0,3,2 };
514 for( u32 i
=0; i
<vg_list_size(mesh
); i
++ ){
515 indices
[i
] = start
+mesh
[i
];
518 vg_ui
.cur_indice
+= 6;
522 static void ui_fill( ui_rect rect
, u32 colour
)
524 ui_fill_rect( rect
, colour
, (ui_px
[4]){ 4,4,4,4 } );
527 static void ui_outline( ui_rect rect
, ui_px thickness
, u32 colour
)
529 /* this if far from ideal but stops us from crashing */
530 if( (vg_ui
.cur_vert
+ 8 > vg_ui
.max_verts
) ||
531 (vg_ui
.cur_indice
+ 24 > vg_ui
.max_indices
))
534 struct ui_vert
*vertices
= &vg_ui
.vertex_buffer
[ vg_ui
.cur_vert
];
535 u16
*indices
= &vg_ui
.indice_buffer
[ vg_ui
.cur_indice
];
537 for( int i
=0; i
<8; i
++ ){
538 vertices
[i
].uv
[0] = 4;
539 vertices
[i
].uv
[1] = 4;
540 vertices
[i
].colour
= colour
;
543 vertices
[0].co
[0] = rect
[0];
544 vertices
[0].co
[1] = rect
[1];
545 vertices
[1].co
[0] = rect
[0]+rect
[2];
546 vertices
[1].co
[1] = rect
[1];
547 vertices
[2].co
[0] = rect
[0]+rect
[2];
548 vertices
[2].co
[1] = rect
[1]+rect
[3];
549 vertices
[3].co
[0] = rect
[0];
550 vertices
[3].co
[1] = rect
[1]+rect
[3];
551 vertices
[4].co
[0] = vertices
[0].co
[0]-thickness
;
552 vertices
[4].co
[1] = vertices
[0].co
[1]-thickness
;
553 vertices
[5].co
[0] = vertices
[1].co
[0]+thickness
;
554 vertices
[5].co
[1] = vertices
[1].co
[1]-thickness
;
555 vertices
[6].co
[0] = vertices
[2].co
[0]+thickness
;
556 vertices
[6].co
[1] = vertices
[2].co
[1]+thickness
;
557 vertices
[7].co
[0] = vertices
[3].co
[0]-thickness
;
558 vertices
[7].co
[1] = vertices
[3].co
[1]+thickness
;
560 u16 start
= vg_ui
.cur_vert
;
561 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 };
563 for( u32 i
=0; i
<vg_list_size(mesh
); i
++ ){
564 indices
[i
] = start
+mesh
[i
];
567 vg_ui
.cur_indice
+= 24;
571 static void ui_split_px( ui_rect rect
,
572 enum ui_axis other
, ui_px width
, ui_px pad
,
573 ui_rect l
, ui_rect r
)
575 enum ui_axis dir
= other
^ 0x1;
578 rect_copy( rect
, temp
);
580 l
[ dir
] = temp
[ dir
] + pad
;
581 r
[ dir
] = temp
[ dir
] + width
+ (pad
/2);
582 l
[ other
] = temp
[ other
] + pad
;
583 r
[ other
] = temp
[ other
] + pad
;
584 l
[ 2+dir
] = width
- ((3*pad
)/2);
585 r
[ 2+dir
] = temp
[ 2+dir
] - width
- ((3*pad
)/2);
586 l
[ 2+other
] = temp
[ 2+other
] - pad
*2;
587 r
[ 2+other
] = temp
[ 2+other
] - pad
*2;
590 static void ui_rect_center( ui_rect parent
, ui_rect rect
)
592 rect
[0] = parent
[0] + (parent
[2]-rect
[2])/2;
593 rect
[1] = parent
[1] + (parent
[3]-rect
[3])/2;
596 static void ui_fit_item( ui_rect rect
, ui_px size
[2], ui_rect d
)
598 i32 rp
= (i32
)rect
[2] * (i32
)size
[1],
599 rc
= (i32
)size
[0] * (i32
)rect
[3];
601 enum ui_axis dir
, other
;
602 if( rc
> rp
) dir
= k_ui_axis_h
;
603 else dir
= k_ui_axis_v
;
606 d
[2+dir
] = rect
[2+dir
];
607 d
[2+other
] = (rect
[2+dir
] * size
[other
]) / size
[dir
];
609 ui_rect_center( rect
, d
);
612 static void ui_split_ratio( ui_rect rect
, enum ui_axis dir
, float ratio
,
613 ui_px pad
, ui_rect l
, ui_rect r
)
615 ui_px width
= (float)rect
[ 2+(dir
^0x1) ] * ratio
;
616 ui_split_px( rect
, dir
, width
, pad
, l
, r
);
619 static void ui_rect_pad( ui_rect rect
, ui_px pad
)
627 static ui_px
ui_text_line_width( const char *str
)
630 const char *_c
= str
;
633 while( (c
= *(_c
++)) ){
634 if( c
>= 32 ) length
++;
635 else if( c
== '\n' ) break;
641 static ui_px
ui_text_string_height( const char *str
)
644 const char *_c
= str
;
647 while( (c
= *(_c
++)) ){
648 if( c
== '\n' ) height
++;
654 static ui_px
ui_text_aligned_x( const char *str
, ui_rect rect
, ui_px scale
,
655 enum ui_align align
)
657 enum ui_align lwr
= k_ui_align_lwr
& align
;
658 if( lwr
== k_ui_align_left
){
662 ui_px width
= ui_text_line_width( str
) * scale
;
664 if( lwr
== k_ui_align_right
)
665 return rect
[0] + rect
[2]-width
;
667 return rect
[0] + (rect
[2]-width
)/2;
671 static ui_px
ui_min( ui_px a
, ui_px b
){ return a
<b
?a
:b
; }
672 static ui_px
ui_max( ui_px a
, ui_px b
){ return a
>b
?a
:b
; }
673 static ui_px
ui_clamp( ui_px a
, ui_px min
, ui_px max
)
675 return ui_min( max
, ui_max( a
, min
) );
678 static int ui_clip( ui_rect parent
, ui_rect child
, ui_rect clipped
)
680 ui_px parent_max
[2], child_max
[2];
681 parent_max
[0] = parent
[0]+parent
[2];
682 parent_max
[1] = parent
[1]+parent
[3];
683 child_max
[0] = child
[0]+child
[2];
684 child_max
[1] = child
[1]+child
[3];
686 clipped
[0] = ui_clamp( child
[0], parent
[0], parent_max
[0] );
687 clipped
[1] = ui_clamp( child
[1], parent
[1], parent_max
[1] );
688 clipped
[2] = ui_clamp( child_max
[0], parent
[0], parent_max
[0] );
689 clipped
[3] = ui_clamp( child_max
[1], parent
[1], parent_max
[1] );
691 if( clipped
[0] == clipped
[2] ||
692 clipped
[1] == clipped
[3] )
695 clipped
[2] -= clipped
[0];
696 clipped
[3] -= clipped
[1];
701 static int ui_inside_rect( ui_rect rect
, ui_px co
[2] )
703 if( co
[0] >= rect
[0] &&
705 co
[0] <= rect
[0]+rect
[2] &&
706 co
[1] <= rect
[1]+rect
[3] )
714 static int ui_click_down( u32 mask
)
716 if( vg_ui
.ignore_input_frames
) return 0;
717 if( (vg_ui
.mouse_state
[0] & mask
) &&
718 !(vg_ui
.mouse_state
[1] & mask
) )
724 static int ui_clicking( u32 mask
)
726 if( vg_ui
.ignore_input_frames
) return 0;
727 return vg_ui
.mouse_state
[0] & mask
;
730 static int ui_click_up( u32 mask
)
732 if( vg_ui
.ignore_input_frames
) return 0;
733 if( (vg_ui
.mouse_state
[1] & mask
) &&
734 !(vg_ui
.mouse_state
[0] & mask
) )
740 static void ui_prerender(void)
743 vg_ui
.mouse_state
[1] = vg_ui
.mouse_state
[0];
744 vg_ui
.mouse_state
[0] = SDL_GetMouseState( &x
, &y
);
749 vg_ui
.cur_indice
= 0;
750 vg_ui
.vert_start
= 0;
751 vg_ui
.indice_start
= 0;
752 vg_ui
.focused_control_hit
= 0;
753 vg_ui
.cursor
= k_ui_cursor_default
;
754 vg_ui
.wants_mouse
= 0;
756 if( vg_ui
.ignore_input_frames
){
757 vg_ui
.ignore_input_frames
--;
761 if( ui_click_down(UI_MOUSE_LEFT
)||ui_click_down(UI_MOUSE_MIDDLE
) ){
762 vg_ui
.mouse_click
[0] = vg_ui
.mouse
[0];
763 vg_ui
.mouse_click
[1] = vg_ui
.mouse
[1];
767 static u32
ui_colour( enum ui_scheme_colour id
)
769 return vg_ui
.scheme
[ id
];
772 /* get an appropriately contrasting colour given the base */
773 static u32
ui_colourcont( enum ui_scheme_colour id
)
775 if ( id
< k_ui_bg
+6 ) return ui_colour( k_ui_fg
);
776 else if( id
< k_ui_fg
) return ui_colour( k_ui_bg
+1 );
777 else if( id
< k_ui_hue
) return ui_colour( k_ui_bg
+3 );
778 else if( id
< k_ui_red
+k_ui_brighter
) return ui_colour( k_ui_fg
);
779 else return ui_colour( k_ui_fg
+1 );
782 static u32
ui_ntext( ui_rect rect
, const char *str
, u32 len
, ui_px scale
,
783 enum ui_align align
, u32 colour
)
786 if( colour
== 0 ) colour
= ui_colour( k_ui_fg
);
788 colour
&= 0x00ffffff;
790 const char *_c
= str
;
793 text_cursor
[0] = ui_text_aligned_x( str
, rect
, scale
, align
);
794 text_cursor
[1] = rect
[1];
795 text_cursor
[2] = 8*scale
;
796 text_cursor
[3] = 14*scale
;
798 u32 printed_chars
= 0;
800 if( align
& (k_ui_align_middle
|k_ui_align_bottom
) ){
801 ui_px height
= ui_text_string_height( str
) * scale
;
803 if( align
& k_ui_align_bottom
)
804 text_cursor
[1] += rect
[3]-height
;
806 text_cursor
[1] += (rect
[3]-height
)/2;
809 while( (c
= *(_c
++)) ){
810 if( printed_chars
>= len
){
812 text_cursor
[1] += 14*scale
;
813 text_cursor
[0] = ui_text_aligned_x( _c
, rect
, scale
, align
);
814 text_cursor
[0] -= UI_GLYPH_SPACING_X
*scale
;
817 u8 glyph_index
= '\x90';
818 glyph_base
[0] = glyph_index
& 0xf;
819 glyph_base
[1] = (glyph_index
-glyph_base
[0])>>4;
823 ui_fill_rect( text_cursor
, 0x00ffffff, (ui_px
[4])
831 text_cursor
[0] += UI_GLYPH_SPACING_X
*scale
;
835 text_cursor
[1] += 14*scale
;
836 text_cursor
[0] = ui_text_aligned_x( _c
, rect
, scale
, align
);
843 glyph_base
[0] = glyph_index
& 0xf;
844 glyph_base
[1] = (glyph_index
-glyph_base
[0])>>4;
850 if( ui_clip( rect
, text_cursor
, rect_char
) ){
851 ui_fill_rect( rect_char
, colour
, (ui_px
[4])
860 else if( c
== '\x1B' ){
864 for( int i
=0; i
<3; i
++ ){
870 case '0': colour
= ui_colour( k_ui_fg
); break;
871 case '3'|'0'<<8: colour
= ui_colour( k_ui_bg
); break;
872 case '3'|'1'<<8: colour
= ui_colour( k_ui_red
); break;
873 case '3'|'2'<<8: colour
= ui_colour( k_ui_green
); break;
874 case '3'|'3'<<8: colour
= ui_colour( k_ui_yellow
); break;
875 case '3'|'4'<<8: colour
= ui_colour( k_ui_blue
); break;
876 case '3'|'5'<<8: colour
= ui_colour( k_ui_purple
); break;
877 case '3'|'6'<<8: colour
= ui_colour( k_ui_aqua
); break;
878 case '3'|'7'<<8: colour
= 0xffffffff; break;
881 colour
&= 0x00ffffff;
885 colour_id
|= _c
[i
] << (i
*8);
895 else if( c
== '\t' ){
896 text_cursor
[0] += UI_GLYPH_SPACING_X
*scale
*4;
901 text_cursor
[0] += UI_GLYPH_SPACING_X
*scale
;
905 return printed_chars
;
908 static void ui_text( ui_rect rect
, const char *str
, ui_px scale
,
909 enum ui_align align
, u32 colour
)
911 ui_ntext( rect
, str
, 1024, scale
, align
, colour
);
914 static void ui_image( ui_rect rect
, GLuint image
)
916 ui_flush( k_ui_shader_colour
);
918 glActiveTexture( GL_TEXTURE0
);
919 glBindTexture( GL_TEXTURE_2D
, image
);
920 ui_fill_rect( rect
, 0xffffffff, (ui_px
[4]){ 0,128, 128, 0 } );
921 ui_flush( k_ui_shader_image
);
924 static u32
v4f_u32_colour( v4f colour
)
926 u32 r
= colour
[0] * 255.0f
,
927 g
= colour
[1] * 255.0f
,
928 b
= colour
[2] * 255.0f
,
929 a
= colour
[3] * 255.0f
;
931 return r
| (g
<<8) | (b
<<16) | (a
<<24);
934 static void ui_defocus_all(void)
936 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
940 vg_ui
.focused_control_id
= NULL
;
941 vg_ui
.focused_control_hit
= 0;
942 vg_ui
.focused_control_type
= k_ui_control_none
;
945 static int ui_colourbutton( ui_rect rect
, enum ui_scheme_colour colour
)
947 int clickup
= ui_click_up(UI_MOUSE_LEFT
),
948 click
= ui_clicking(UI_MOUSE_LEFT
) | clickup
,
949 target
= ui_inside_rect( rect
, vg_ui
.mouse_click
) && click
,
950 hover
= ui_inside_rect( rect
, vg_ui
.mouse
);
952 u32 col_base
= vg_ui
.scheme
[ colour
],
953 col_highlight
= vg_ui
.scheme
[ k_ui_fg
],
954 col_hover
= vg_ui
.scheme
[ colour
+ k_ui_brighter
];
957 vg_ui
.cursor
= k_ui_cursor_hand
;
964 ui_fill( rect
, col_highlight
);
965 vg_ui
.ignore_input_frames
= 2;
966 rect_copy( rect
, vg_ui
.click_fader
);
968 rect_copy( rect
, vg_ui
.click_fader_end
);
969 vg_ui
.click_fader_end
[3] = 0;
970 ui_rect_center( rect
, vg_ui
.click_fader_end
);
972 vg_ui
.click_fade_opacity
= 1.0f
;
977 ui_fill( rect
, col_highlight
);
982 ui_fill( rect
, col_base
);
983 ui_outline( rect
, 1, col_highlight
);
988 ui_fill( rect
, col_base
);
994 ui_fill( rect
, col_hover
);
998 ui_fill( rect
, col_base
);
1004 static int ui_colourbutton_text( ui_rect rect
, const char *string
, ui_px scale
,
1005 enum ui_scheme_colour colour
)
1007 int result
= ui_colourbutton( rect
, colour
);
1008 ui_rect t
= { 0,0, ui_text_line_width( string
)*scale
, 14*scale
};
1009 ui_rect_center( rect
, t
);
1010 ui_text( t
, string
, scale
, k_ui_align_left
, ui_colourcont(colour
) );
1014 static int ui_button_text( ui_rect rect
, const char *string
, ui_px scale
)
1016 return ui_colourbutton_text( rect
, string
, scale
, k_ui_bg
+4 );
1019 static void ui_postrender(void)
1021 if( vg_ui
.click_fade_opacity
> 0.0f
){
1023 float scale
= vg_ui
.click_fade_opacity
;
1024 scale
= vg_maxf( 1.0f
/255.0f
, scale
*scale
);
1026 vg_ui
.click_fade_opacity
-= vg
.time_frame_delta
* 3.8f
;
1027 u32 colour
= (0x00ffffff & ui_colour(k_ui_fg
))|0x7f000000;
1029 v4f begin
, end
, dest
;
1030 for( int i
=0; i
<4; i
++ ){
1031 begin
[i
] = vg_ui
.click_fader
[i
];
1032 end
[i
] = vg_ui
.click_fader_end
[i
]+1;
1035 v4_lerp( end
, begin
, scale
, dest
);
1038 for( int i
=0; i
<4; i
++ ){
1042 ui_fill( rect
, colour
);
1044 ui_flush( k_ui_shader_colour
);
1046 if( !vg_ui
.focused_control_hit
){
1050 if( vg_ui
.wants_mouse
){
1051 SDL_SetWindowGrab( vg
.window
, SDL_FALSE
);
1052 SDL_SetRelativeMouseMode( SDL_FALSE
);
1055 SDL_SetWindowGrab( vg
.window
, SDL_TRUE
);
1056 SDL_SetRelativeMouseMode( SDL_TRUE
);
1059 SDL_SetCursor( vg_ui
.cursor_map
[ vg_ui
.cursor
] );
1063 static void ui_dev_colourview(void)
1065 ui_rect window
= {vg
.window_x
-256,0,256,vg
.window_y
}, swatch
;
1067 const char *names
[vg_list_size(vg_ui
.scheme
)] = {
1068 [k_ui_bg
] = "k_ui_bg", "k_ui_bg+1", "k_ui_bg+2", "k_ui_bg+3",
1069 "k_ui_bg+4", "k_ui_bg+5", "k_ui_bg+6", "k_ui_bg+7",
1071 [k_ui_fg
] = "k_ui_fg", "k_ui_fg+1", "k_ui_fg+2", "k_ui_fg+3",
1072 "k_ui_fg+4", "k_ui_fg+5", "k_ui_fg+6", "k_ui_fg+7",
1074 [k_ui_red
] = "k_ui_red", "k_ui_orange", "k_ui_yellow", "k_ui_green",
1075 "k_ui_aqua", "k_ui_blue", "k_ui_purple", "k_ui_gray",
1076 "k_ui_red+8","k_ui_orange+8","k_ui_yellow+8","k_ui_green+8",
1077 "k_ui_aqua+8","k_ui_blue+8","k_ui_purple+8","k_ui_gray+8" };
1080 ui_split_ratio( window
, k_ui_axis_v
, 0.5f
, 0.0f
, col
[0], col
[1] );
1082 for( int i
=0; i
<vg_list_size(vg_ui
.scheme
); i
++ ){
1083 int which
= (i
/8)%2;
1085 ui_split_px( col
[which
], k_ui_axis_h
, 24, 0, swatch
, col
[which
] );
1086 ui_fill( swatch
, ui_colour(i
) );
1089 ui_text(swatch
, names
[i
], 1, k_ui_align_middle_left
, ui_colourcont(i
));
1095 * -----------------------------------------------------------------------------
1098 static int ui_checkbox( ui_rect rect
, const char *str_label
, int *data
)
1101 ui_split_px( rect
, k_ui_axis_v
, rect
[2]-rect
[3], 0, label
, box
);
1102 ui_text( label
, str_label
, 1, k_ui_align_middle_left
, 0 );
1104 int changed
= ui_colourbutton( box
, k_ui_bg
);
1106 *data
= (*data
) ^ 0x1;
1109 ui_rect_pad( box
, 4 );
1110 ui_fill( box
, ui_colour( k_ui_orange
) );
1118 * -----------------------------------------------------------------------------
1121 static void _ui_textbox_make_selection( int *start
, int *end
)
1123 *start
= VG_MIN( vg_ui
.textbox
.cursor_pos
, vg_ui
.textbox
.cursor_user
);
1124 *end
= VG_MAX( vg_ui
.textbox
.cursor_pos
, vg_ui
.textbox
.cursor_user
);
1127 static void _ui_textbox_move_cursor( int *cursor0
, int *cursor1
,
1128 int dir
, int snap_together
)
1130 *cursor0
= VG_MAX( 0, vg_ui
.textbox
.cursor_user
+ dir
);
1133 VG_MIN( vg_ui
.textbox
.len
-1, strlen( vg_ui
.textbuf
)),
1137 *cursor1
= *cursor0
;
1140 static int _ui_textbox_makeroom( int datastart
, int length
)
1142 int move_to
= VG_MIN( datastart
+length
, vg_ui
.textbox
.len
-1 );
1143 int move_amount
= strlen( vg_ui
.textbuf
)-datastart
;
1144 int move_end
= VG_MIN( move_to
+move_amount
, vg_ui
.textbox
.len
-1 );
1145 move_amount
= move_end
-move_to
;
1148 memmove( &vg_ui
.textbuf
[ move_to
],
1149 &vg_ui
.textbuf
[ datastart
],
1152 vg_ui
.textbuf
[ move_end
] = '\0';
1154 return VG_MIN( length
, vg_ui
.textbox
.len
-datastart
-1 );
1157 static int _ui_textbox_delete_char( int direction
)
1160 _ui_textbox_make_selection( &start
, &end
);
1162 /* There is no selection */
1164 if( direction
== 1 ) end
= VG_MIN( end
+1, strlen( vg_ui
.textbuf
) );
1165 else if( direction
== -1 ) start
= VG_MAX( start
-1, 0 );
1168 /* Still no selction, no need to do anything */
1172 /* Copy the end->terminator to start */
1173 int remaining_length
= strlen( vg_ui
.textbuf
)+1-end
;
1174 memmove( &vg_ui
.textbuf
[ start
],
1175 &vg_ui
.textbuf
[ end
],
1180 static void _ui_textbox_to_clipboard(void)
1183 _ui_textbox_make_selection( &start
, &end
);
1187 memcpy( buffer
, &vg_ui
.textbuf
[ start
], end
-start
);
1188 buffer
[ end
-start
] = 0x00;
1189 SDL_SetClipboardText( buffer
);
1193 static void _ui_textbox_clipboard_paste(void)
1195 if( !SDL_HasClipboardText() )
1198 char *text
= SDL_GetClipboardText();
1203 int datastart
= _ui_textbox_delete_char( 0 );
1204 int length
= strlen( text
);
1205 int cpylength
= _ui_textbox_makeroom( datastart
, length
);
1207 memcpy( vg_ui
.textbuf
+ datastart
, text
, cpylength
);
1208 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1209 &vg_ui
.textbox
.cursor_pos
, cpylength
, 1 );
1213 static void _ui_textbox_put_char( char c
)
1215 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char(0);
1217 if( _ui_textbox_makeroom( vg_ui
.textbox
.cursor_user
, 1 ) )
1218 vg_ui
.textbuf
[ vg_ui
.textbox
.cursor_user
] = c
;
1220 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1221 &vg_ui
.textbox
.cursor_pos
, 1, 1 );
1224 /* Receed secondary cursor */
1225 static void _ui_textbox_left_select(void)
1227 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, -1, 0 );
1230 /* Match and receed both cursors */
1231 static void _ui_textbox_left(void)
1233 int cursor_diff
= vg_ui
.textbox
.cursor_pos
- vg_ui
.textbox
.cursor_user
? 0: 1;
1235 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1236 &vg_ui
.textbox
.cursor_pos
, -cursor_diff
, 1 );
1239 static void _ui_textbox_up(void)
1241 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
){
1242 int line_begin
= vg_ui
.textbox
.cursor_user
;
1244 while( line_begin
){
1245 if( vg_ui
.textbuf
[ line_begin
-1 ] == '\n' ){
1253 int line_above_begin
= line_begin
-1;
1255 while( line_above_begin
){
1256 if( vg_ui
.textbuf
[ line_above_begin
-1 ] == '\n' ){
1260 line_above_begin
--;
1263 int offset
= vg_ui
.textbox
.cursor_user
- line_begin
,
1264 line_length_above
= line_begin
- line_above_begin
-1;
1266 offset
= VG_MIN( line_length_above
, offset
);
1268 vg_ui
.textbox
.cursor_user
= line_above_begin
+offset
;
1269 vg_ui
.textbox
.cursor_pos
= line_above_begin
+offset
;
1272 vg_ui
.textbox
.cursor_user
= line_begin
;
1273 vg_ui
.textbox
.cursor_pos
= line_begin
;
1277 if( vg_ui
.textbox
.callbacks
.up
){
1278 vg_ui
.textbox
.callbacks
.up( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1283 static void _ui_textbox_down(void)
1285 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
){
1286 int line_begin
= vg_ui
.textbox
.cursor_user
;
1288 while( line_begin
){
1289 if( vg_ui
.textbuf
[ line_begin
-1 ] == '\n' ){
1296 int line_below_begin
= vg_ui
.textbox
.cursor_user
;
1299 if( vg_ui
.textbuf
[ line_below_begin
] == '\0' ){
1300 vg_ui
.textbox
.cursor_user
= line_below_begin
;
1301 vg_ui
.textbox
.cursor_pos
= line_below_begin
;
1305 if( vg_ui
.textbuf
[ line_below_begin
] == '\n' ){
1306 line_below_begin
++;
1310 line_below_begin
++;
1313 int line_below_end
= line_below_begin
;
1315 if( vg_ui
.textbuf
[ line_below_end
] == '\0' ||
1316 vg_ui
.textbuf
[ line_below_end
] == '\n' ){
1323 int offset
= vg_ui
.textbox
.cursor_user
- line_begin
,
1324 line_length_below
= line_below_end
- line_below_begin
-1;
1326 offset
= VG_MIN( line_length_below
, offset
);
1328 vg_ui
.textbox
.cursor_user
= line_below_begin
+offset
;
1329 vg_ui
.textbox
.cursor_pos
= line_below_begin
+offset
;
1332 if( vg_ui
.textbox
.callbacks
.down
){
1333 vg_ui
.textbox
.callbacks
.down( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1338 static void _ui_textbox_right_select(void)
1340 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, 1, 0 );
1343 static void _ui_textbox_right(void)
1345 int cursor_diff
= vg_ui
.textbox
.cursor_pos
- vg_ui
.textbox
.cursor_user
? 0: 1;
1347 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1348 &vg_ui
.textbox
.cursor_pos
, +cursor_diff
, 1 );
1351 static void _ui_textbox_backspace(void)
1353 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1354 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char( -1 );
1355 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1357 if( vg_ui
.textbox
.callbacks
.change
){
1358 vg_ui
.textbox
.callbacks
.change( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1363 static void _ui_textbox_delete(void)
1365 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1366 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char( 1 );
1367 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1369 if( vg_ui
.textbox
.callbacks
.change
){
1370 vg_ui
.textbox
.callbacks
.change( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1375 static void _ui_textbox_home_select(void)
1377 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, -10000, 0 );
1380 static void _ui_textbox_home(void)
1382 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1383 &vg_ui
.textbox
.cursor_pos
, -10000, 1 );
1386 static void _ui_textbox_end_select(void)
1388 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, 10000, 0 );
1391 static void _ui_textbox_end(void)
1393 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1394 &vg_ui
.textbox
.cursor_pos
,
1395 vg_ui
.textbox
.len
-1, 1 );
1398 static void _ui_textbox_select_all(void)
1400 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, 10000, 0);
1401 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_pos
, NULL
, -10000, 0);
1404 static void _ui_textbox_cut(void)
1406 _ui_textbox_to_clipboard();
1407 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char(0);
1408 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1411 static void _ui_textbox_enter(void)
1413 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1414 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
){
1415 _ui_textbox_put_char( '\n' );
1418 if( !(vg_ui
.textbox
.flags
& UI_TEXTBOX_AUTOFOCUS
) )
1422 if( vg_ui
.textbox
.callbacks
.enter
){
1423 vg_ui
.textbox
.callbacks
.enter( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1429 * based on a visual character coordinate relative to the anchor of the textbox,
1430 * this works out the linear place in the buffer that coordinate maps to
1432 * input coordinates go in co[0], co[1], and the result index is in co[2]
1434 static void _ui_textbox_calc_index_from_grid( int co
[3], int wrap_length
)
1439 while( (c
= vg_ui
.textbuf
[i
[2]]) ){
1440 if( i
[1]==co
[1] && i
[0]>=co
[0] ) break;
1442 if( i
[0] >= wrap_length
){
1447 if( c
>= 32 && c
<= 126 ){
1451 else if( c
== '\n' ){
1454 if( i
[1] > co
[1] ) break;
1468 * based on the index specied in co[2], work out the visual character
1469 * coordinates and store them in co[0], co[1]
1471 static void _ui_textbox_index_calc_coords( int co
[3], int wrap_length
)
1479 while( (c
= vg_ui
.textbuf
[i
++]) ){
1480 if( i
> co
[2] ) break;
1481 if( co
[0] >= wrap_length
){
1485 if( c
>= 32 && c
<= 126 ) co
[0] ++;
1486 else if( c
== '\n' ){
1494 * calculate the number of characters remaining until either:
1495 * - the wrap_length limit is hit
1496 * - end of the line/string
1498 * index must be fully populated with visual X/Y, and linear index
1500 static int _ui_textbox_run_remaining( int index
[3], int wrap_length
)
1502 int i
=0, printed_chars
=0;
1504 while( (c
= vg_ui
.textbuf
[index
[2] + (i
++)]) ){
1505 if( index
[0]+i
>= wrap_length
) break;
1506 if( c
>= 32 && c
<= 126 ) printed_chars
++;
1507 else if( c
== '\n' ) break;
1510 return printed_chars
+1;
1513 static int ui_textbox( ui_rect rect
, char *buf
, u32 len
, u32 flags
,
1514 struct ui_textbox_callbacks
*callbacks
)
1516 int clickup
= ui_click_up(UI_MOUSE_LEFT
),
1517 click
= ui_clicking(UI_MOUSE_LEFT
) | clickup
,
1518 target
= ui_inside_rect( rect
, vg_ui
.mouse_click
) && click
,
1519 hover
= ui_inside_rect( rect
, vg_ui
.mouse
);
1521 u32 col_base
= ui_colour( k_ui_bg
),
1522 col_highlight
= ui_colour( k_ui_fg
),
1523 col_cursor
= (0x00ffffff & ui_colour(k_ui_fg
))|0x7f000000;
1528 rect_copy( rect
, text_rect
);
1530 if( flags
& UI_TEXTBOX_MULTILINE
) text_rect
[3] = rect
[3]-16;
1531 else text_rect
[3] = 14;
1534 ui_rect_center( rect
, text_rect
);
1536 ui_px wrap_length
= 1024;
1538 if( flags
& UI_TEXTBOX_WRAP
)
1539 wrap_length
= text_rect
[2] / UI_GLYPH_SPACING_X
;
1542 vg_ui
.cursor
= k_ui_cursor_ibeam
;
1545 if( vg_ui
.focused_control_id
== buf
){
1546 ui_fill( rect
, col_base
);
1547 ui_ntext( text_rect
, buf
, wrap_length
, 1, k_ui_align_left
, 0 );
1549 if( !(flags
& UI_TEXTBOX_AUTOFOCUS
) &&
1550 ((clickup
||ui_click_down(UI_MOUSE_LEFT
)) && !target
) ){
1554 vg_ui
.focused_control_hit
= 1;
1555 if( click
&& target
){
1557 (vg_ui
.mouse_click
[0] - text_rect
[0]) / UI_GLYPH_SPACING_X
,
1558 (vg_ui
.mouse_click
[1] - text_rect
[1]) / 14,
1562 (vg_ui
.mouse
[0] - text_rect
[0]) / UI_GLYPH_SPACING_X
,
1563 (vg_ui
.mouse
[1] - text_rect
[1]) / 14,
1567 if( flags
& UI_TEXTBOX_MULTILINE
){
1568 _ui_textbox_calc_index_from_grid( p0
, wrap_length
);
1569 _ui_textbox_calc_index_from_grid( p1
, wrap_length
);
1571 vg_ui
.textbox
.cursor_pos
= p0
[2];
1572 vg_ui
.textbox
.cursor_user
= p1
[2];
1575 int max
= strlen( buf
);
1576 vg_ui
.textbox
.cursor_pos
= VG_MAX( 0, VG_MIN( max
, p0
[0] )),
1577 vg_ui
.textbox
.cursor_user
= VG_MAX( 0, VG_MIN( max
, p1
[0] ));
1581 ui_outline( rect
, -2, vg_ui
.scheme
[ k_ui_orange
] );
1585 int c0
= vg_ui
.textbox
.cursor_pos
,
1586 c1
= vg_ui
.textbox
.cursor_user
,
1587 start
= VG_MIN( c0
, c1
),
1588 end
= VG_MAX( c0
, c1
),
1591 if( flags
& (UI_TEXTBOX_MULTILINE
|UI_TEXTBOX_WRAP
) ){
1593 int pos
[3], remaining
= chars
;
1596 _ui_textbox_index_calc_coords( pos
, wrap_length
);
1599 cursor
[0] = text_rect
[0] + pos
[0]*UI_GLYPH_SPACING_X
-1;
1600 cursor
[1] = text_rect
[1] + pos
[1]*14;
1603 ui_fill( cursor
, col_cursor
);
1604 rect_copy( cursor
, vg_ui
.click_fader_end
);
1608 /* TODO: scan for newlines and stuff
1609 * eol or wrap_length can have line breaks! */
1611 int run
= _ui_textbox_run_remaining( pos
, wrap_length
);
1612 run
= VG_MIN( run
, remaining
);
1614 cursor
[0] = text_rect
[0] + pos
[0]*UI_GLYPH_SPACING_X
-1;
1615 cursor
[1] = text_rect
[1] + pos
[1]*14;
1616 cursor
[2] = (float)(run
)*(float)UI_GLYPH_SPACING_X
;
1619 ui_fill( cursor
, col_cursor
);
1626 rect_copy( cursor
, vg_ui
.click_fader_end
);
1630 cursor
[0] = text_rect
[0] + start
*UI_GLYPH_SPACING_X
-1;
1631 cursor
[1] = text_rect
[1];
1638 cursor
[2] = (float)(chars
)*(float)UI_GLYPH_SPACING_X
;
1641 if( (vg_ui
.click_fade_opacity
<=0.0f
) &&
1642 ui_clip( rect
, cursor
, cursor
) ){
1643 ui_fill( cursor
, col_cursor
);
1646 rect_copy( cursor
, vg_ui
.click_fader_end
);
1653 if( click
|| (flags
& UI_TEXTBOX_AUTOFOCUS
) ){
1654 if( (target
&& hover
) || (flags
& UI_TEXTBOX_AUTOFOCUS
) ){
1657 ui_fill( rect
, col_highlight
);
1658 vg_ui
.ignore_input_frames
= 2;
1659 rect_copy( rect
, vg_ui
.click_fader
);
1660 rect_copy( rect
, vg_ui
.click_fader_end
);
1662 vg_ui
.click_fade_opacity
= 1.0f
;
1663 vg_ui
.textbuf
= buf
;
1664 vg_ui
.focused_control_hit
= 1;
1665 vg_ui
.focused_control_type
= k_ui_control_textbox
;
1666 vg_ui
.textbox
.len
= len
;
1667 vg_ui
.textbox
.flags
= flags
;
1668 vg_ui
.textbox
.cursor_pos
= 0;
1669 vg_ui
.textbox
.cursor_user
= 0;
1672 vg_ui
.textbox
.callbacks
= *callbacks
;
1675 vg_ui
.textbox
.callbacks
.change
= NULL
;
1676 vg_ui
.textbox
.callbacks
.down
= NULL
;
1677 vg_ui
.textbox
.callbacks
.up
= NULL
;
1678 vg_ui
.textbox
.callbacks
.enter
= NULL
;
1681 SDL_StartTextInput();
1685 ui_fill( rect
, col_base
);
1688 ui_outline( rect
, -1, col_highlight
);
1691 ui_ntext( text_rect
, buf
, wrap_length
, 1, k_ui_align_left
, 0 );
1697 * -----------------------------------------------------------------------------
1703 static void _ui_proc_key( SDL_Keysym ev
)
1705 if( vg_ui
.focused_control_type
!= k_ui_control_textbox
){
1709 struct textbox_mapping
1714 void (*handler
)(void);
1718 { 0, SDLK_LEFT
, _ui_textbox_left
},
1719 { KMOD_SHIFT
, SDLK_LEFT
, _ui_textbox_left_select
},
1720 { 0, SDLK_RIGHT
, _ui_textbox_right
},
1721 { KMOD_SHIFT
, SDLK_RIGHT
, _ui_textbox_right_select
},
1722 { 0, SDLK_DOWN
, _ui_textbox_down
},
1723 { 0, SDLK_UP
, _ui_textbox_up
},
1724 { 0, SDLK_BACKSPACE
, _ui_textbox_backspace
},
1725 { KMOD_SHIFT
, SDLK_BACKSPACE
, _ui_textbox_backspace
},
1726 { KMOD_CTRL
, SDLK_BACKSPACE
, _ui_textbox_backspace
},
1727 { 0, SDLK_DELETE
, _ui_textbox_delete
},
1728 { 0, SDLK_HOME
, _ui_textbox_home
},
1729 { KMOD_SHIFT
, SDLK_HOME
, _ui_textbox_home_select
},
1730 { 0, SDLK_END
, _ui_textbox_end
},
1731 { KMOD_SHIFT
, SDLK_END
, _ui_textbox_end_select
},
1732 { KMOD_CTRL
, SDLK_a
, _ui_textbox_select_all
},
1733 { KMOD_CTRL
, SDLK_c
, _ui_textbox_to_clipboard
},
1734 { KMOD_CTRL
, SDLK_x
, _ui_textbox_cut
},
1735 { KMOD_CTRL
, SDLK_v
, _ui_textbox_clipboard_paste
},
1736 { 0, SDLK_RETURN
, _ui_textbox_enter
},
1737 { 0, SDLK_ESCAPE
, ui_defocus_all
},
1742 if( ev
.mod
& KMOD_SHIFT
)
1745 if( ev
.mod
& KMOD_CTRL
)
1748 if( ev
.mod
& KMOD_ALT
)
1751 for( int i
=0; i
<vg_list_size( mappings
); i
++ ){
1752 struct textbox_mapping
*mapping
= &mappings
[i
];
1754 if( mapping
->key
== ev
.sym
){
1755 if( mapping
->mod
== 0 ){
1761 else if( (mod
& mapping
->mod
) == mapping
->mod
){
1770 * Callback for text entry mode
1772 VG_STATIC
void ui_proc_utf8( const char *text
)
1774 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1775 const char *ptr
= text
;
1778 if( *ptr
!= '`' ) _ui_textbox_put_char( *ptr
);
1782 if( vg_ui
.textbox
.callbacks
.change
){
1783 vg_ui
.textbox
.callbacks
.change( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1788 #endif /* VG_IMGUI_H */