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 0x1
87 #define UI_MODAL_YES 0x2
88 #define UI_MODAL_NO 0x4
89 #define UI_MODAL_CANCEL 0x8
91 #define UI_MOUSE_LEFT (SDL_BUTTON(SDL_BUTTON_LEFT))
92 #define UI_MOUSE_RIGHT (SDL_BUTTON(SDL_BUTTON_RIGHT))
93 #define UI_MOUSE_MIDDLE (SDL_BUTTON(SDL_BUTTON_MIDDLE))
98 struct ui_vert
*vertex_buffer
;
100 u32 max_verts
, max_indices
,
101 cur_vert
, cur_indice
,
102 vert_start
, indice_start
;
105 void *focused_control_id
; /* uses the memory location of various locking
108 struct ui_dropdown_value
{
114 u32 focused_control_hit
;
115 enum ui_control_type
{
117 k_ui_control_textbox
,
118 k_ui_control_dropdown
,
121 focused_control_type
;
125 int cursor_user
, cursor_pos
;
129 struct ui_textbox_callbacks
{
130 void (*enter
)( char *, u32
),
131 (*up
)( char *, u32
),
132 (*down
)( char *, u32
),
133 (*change
)( char *, u32
);
140 struct ui_dropdown_opt
{
154 struct ui_modal_callbacks
{
161 GLuint tex_glyphs
, vao
, vbo
, ebo
;
163 ui_px mouse
[2], mouse_click
[2];
165 u32 ignore_input_frames
;
168 ui_rect click_fader
, click_fader_end
;
169 float click_fade_opacity
;
181 SDL_Cursor
*cursor_map
[ k_ui_cursor_max
];
185 [ k_ui_bg
+0 ] = UI_RGB( 0x1d2021 ),
186 [ k_ui_bg
+1 ] = UI_RGB( 0x282828 ),
187 [ k_ui_bg
+2 ] = UI_RGB( 0x3c3836 ),
188 [ k_ui_bg
+3 ] = UI_RGB( 0x504945 ),
189 [ k_ui_bg
+4 ] = UI_RGB( 0x665c54 ),
190 [ k_ui_bg
+5 ] = UI_RGB( 0x7c6f64 ),
191 [ k_ui_bg
+6 ] = UI_RGB( 0x928374 ),
192 [ k_ui_bg
+7 ] = UI_RGB( 0xa89984 ),
194 [ k_ui_fg
+0 ] = UI_RGB( 0xebdbb2 ),
195 [ k_ui_fg
+1 ] = UI_RGB( 0xfbf1c7 ),
196 [ k_ui_fg
+2 ] = UI_RGB( 0xd5c4a1 ),
197 [ k_ui_fg
+3 ] = UI_RGB( 0xbdae93 ),
198 [ k_ui_fg
+4 ] = UI_RGB( 0xa89984 ),
199 [ k_ui_fg
+5 ] = UI_RGB( 0x000000 ),
200 [ k_ui_fg
+6 ] = UI_RGB( 0x000000 ),
201 [ k_ui_fg
+7 ] = UI_RGB( 0x000000 ),
203 [ k_ui_red
] = UI_RGB( 0xcc241d ),
204 [ k_ui_orange
] = UI_RGB( 0xd65d0e ),
205 [ k_ui_yellow
] = UI_RGB( 0xd79921 ),
206 [ k_ui_green
] = UI_RGB( 0x98971a ),
207 [ k_ui_aqua
] = UI_RGB( 0x689d6a ),
208 [ k_ui_blue
] = UI_RGB( 0x458588 ),
209 [ k_ui_purple
] = UI_RGB( 0xb16286 ),
210 [ k_ui_gray
] = UI_RGB( 0x928374 ),
211 [ k_ui_red
+ k_ui_brighter
] = UI_RGB( 0xfb4934 ),
212 [ k_ui_orange
+ k_ui_brighter
] = UI_RGB( 0xfe8019 ),
213 [ k_ui_yellow
+ k_ui_brighter
] = UI_RGB( 0xfabd2f ),
214 [ k_ui_green
+ k_ui_brighter
] = UI_RGB( 0xb8bb26 ),
215 [ k_ui_aqua
+ k_ui_brighter
] = UI_RGB( 0x8ec07c ),
216 [ k_ui_blue
+ k_ui_brighter
] = UI_RGB( 0x83a598 ),
217 [ k_ui_purple
+ k_ui_brighter
] = UI_RGB( 0xd3869b ),
218 [ k_ui_gray
+ k_ui_brighter
] = UI_RGB( 0xa89984 ),
222 static struct vg_shader _shader_ui
=
230 "layout (location=0) in vec2 a_co;"
231 "layout (location=1) in vec2 a_uv;"
232 "layout (location=2) in vec4 a_colour;"
235 "out vec2 aTexCoords;"
241 "gl_Position = vec4( uPv * vec3( a_co, 1.0 ), 1.0 );"
242 "aTexCoords = a_uv * 0.0078125;"
243 "aColour = a_colour;"
252 "uniform sampler2D uTexGlyphs;"
253 "out vec4 FragColor;"
255 "in vec2 aTexCoords;"
260 "vec2 rand_hash22( vec2 p )"
262 "vec3 p3 = fract(vec3(p.xyx) * 213.8976123);"
263 "p3 += dot(p3, p3.yzx+19.19);"
264 "return fract(vec2((p3.x + p3.y)*p3.z, (p3.x+p3.z)*p3.y));"
269 "vec4 diffuse = aColour;"
271 "if( diffuse.a == 0.0 )"
273 "diffuse.a = texture( uTexGlyphs, aTexCoords ).r;"
276 "FragColor = diffuse;"
281 static struct vg_shader _shader_ui_image
=
283 .name
= "[vg] ui_image",
289 "layout (location=0) in vec2 a_co;"
290 "layout (location=1) in vec2 a_uv;"
291 "layout (location=2) in vec4 a_colour;"
294 "out vec2 aTexCoords;"
300 "gl_Position = vec4( uPv * vec3( a_co, 1.0 ), 1.0 );"
301 "aTexCoords = a_uv * 0.0078125;"
302 "aColour = a_colour;"
311 "uniform sampler2D uTexImage;"
312 "out vec4 FragColor;"
314 "in vec2 aTexCoords;"
320 "vec4 colour = texture( uTexImage, aTexCoords );"
321 "FragColor = colour;"
325 #define UI_GLYPH_SPACING_X 8
327 VG_STATIC
void _vg_ui_init(void)
329 if( !vg_shader_compile( &_shader_ui
) ||
330 !vg_shader_compile( &_shader_ui_image
) )
331 vg_fatal_error( "Failed to compile ui shader" );
335 * ----------------------------------------
338 vg_ui
.max_indices
= 20000;
339 vg_ui
.max_verts
= 30000;
341 /* Generate the buffer we are gonna be drawing to */
342 glGenVertexArrays( 1, &vg_ui
.vao
);
343 glGenBuffers( 1, &vg_ui
.vbo
);
344 glGenBuffers( 1, &vg_ui
.ebo
);
346 glBindVertexArray( vg_ui
.vao
);
347 glBindBuffer( GL_ARRAY_BUFFER
, vg_ui
.vbo
);
349 glBufferData( GL_ARRAY_BUFFER
,
350 vg_ui
.max_verts
* sizeof( struct ui_vert
),
351 NULL
, GL_DYNAMIC_DRAW
);
352 glBindVertexArray( vg_ui
.vao
);
354 glBindBuffer( GL_ELEMENT_ARRAY_BUFFER
, vg_ui
.ebo
);
355 glBufferData( GL_ELEMENT_ARRAY_BUFFER
,
356 vg_ui
.max_indices
* sizeof( u16
), NULL
, GL_DYNAMIC_DRAW
);
361 u32
const stride
= sizeof( struct ui_vert
);
364 glVertexAttribPointer( 0, 2, GL_SHORT
, GL_FALSE
, stride
,
365 (void *)offsetof( struct ui_vert
, co
) );
366 glEnableVertexAttribArray( 0 );
369 glVertexAttribPointer( 1, 2, GL_UNSIGNED_BYTE
, GL_FALSE
, stride
,
370 (void *)offsetof( struct ui_vert
, uv
) );
371 glEnableVertexAttribArray( 1 );
374 glVertexAttribPointer( 2, 4, GL_UNSIGNED_BYTE
, GL_TRUE
, stride
,
375 (void *)offsetof( struct ui_vert
, colour
) );
376 glEnableVertexAttribArray( 2 );
380 /* Alloc RAM default context */
381 u32 vert_size
= vg_ui
.max_verts
*sizeof(struct ui_vert
),
382 inds_size
= vg_align8( vg_ui
.max_indices
*sizeof(u16
) );
384 vg_ui
.vertex_buffer
= vg_linear_alloc( vg_mem
.rtmemory
, vert_size
);
385 vg_ui
.indice_buffer
= vg_linear_alloc( vg_mem
.rtmemory
, inds_size
);
388 * -----------------------------------------------------
391 /* Load default font */
393 #include "vg/vg_pxfont_thin.h"
396 u32 pixels
= 0, total
= 256*256, data
= 0;
399 while( pixels
< total
){
400 for( int b
= 31; b
>= 0; b
-- ){
401 image
[ pixels
++ ] = (compressed
[data
] & (0x1u
<< b
))? 0xffu
: 0x00u
;
403 if( pixels
>= total
){
411 glGenTextures( 1, &vg_ui
.tex_glyphs
);
412 glBindTexture( GL_TEXTURE_2D
, vg_ui
.tex_glyphs
);
413 glTexImage2D( GL_TEXTURE_2D
, 0, GL_R8
, 256, 256, 0,
414 GL_RED
, GL_UNSIGNED_BYTE
, image
);
417 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_WRAP_S
, GL_CLAMP_TO_EDGE
);
418 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_WRAP_T
, GL_CLAMP_TO_EDGE
);
419 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_MIN_FILTER
, GL_NEAREST
);
420 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_MAG_FILTER
, GL_NEAREST
);
424 * ---------------------------------------------------------------
427 vg_ui
.cursor_map
[ k_ui_cursor_default
] =
428 SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_ARROW
);
429 vg_ui
.cursor_map
[ k_ui_cursor_hand
] =
430 SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_HAND
);
431 vg_ui
.cursor_map
[ k_ui_cursor_ibeam
] =
432 SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_IBEAM
);
440 static void rect_copy( ui_rect a
, ui_rect b
)
442 for( int i
=0; i
<4; i
++ )
446 VG_STATIC
void ui_flush( enum ui_shader shader
)
448 u32 vertex_offset
= vg_ui
.vert_start
*sizeof(ui_vert
),
449 vertex_count
= vg_ui
.cur_vert
-vg_ui
.vert_start
,
450 vertex_size
= vertex_count
*sizeof(ui_vert
),
452 indice_offset
= vg_ui
.indice_start
*sizeof(u16
),
453 indice_count
= vg_ui
.cur_indice
-vg_ui
.indice_start
,
454 indice_size
= indice_count
* sizeof(u16
);
456 if( !vertex_size
|| !indice_size
)
459 glBindVertexArray( vg_ui
.vao
);
460 glBindBuffer( GL_ARRAY_BUFFER
, vg_ui
.vbo
);
461 glBufferSubData( GL_ARRAY_BUFFER
, vertex_offset
, vertex_size
,
462 vg_ui
.vertex_buffer
+vg_ui
.vert_start
);
464 glBindBuffer( GL_ELEMENT_ARRAY_BUFFER
, vg_ui
.ebo
);
465 glBufferSubData( GL_ELEMENT_ARRAY_BUFFER
, indice_offset
, indice_size
,
466 vg_ui
.indice_buffer
+vg_ui
.indice_start
);
468 glDisable( GL_DEPTH_TEST
);
469 glEnable( GL_BLEND
);
470 glBlendFunc( GL_SRC_ALPHA
, GL_ONE_MINUS_SRC_ALPHA
);
471 glBlendEquation( GL_FUNC_ADD
);
472 glDisable( GL_CULL_FACE
);
474 m3x3f view
= M3X3_IDENTITY
;
475 m3x3_translate( view
, (v3f
){ -1.0f
, 1.0f
, 0.0f
} );
476 m3x3_scale( view
, (v3f
){ 1.0f
/((float)vg
.window_x
*0.5f
),
477 -1.0f
/((float)vg
.window_y
*0.5f
), 1.0f
} );
479 if( shader
== k_ui_shader_colour
){
480 glUseProgram( _shader_ui
.id
);
482 glUniformMatrix3fv( glGetUniformLocation( _shader_ui
.id
, "uPv" ), 1,
483 GL_FALSE
, (float *)view
);
485 glActiveTexture( GL_TEXTURE0
);
486 glBindTexture( GL_TEXTURE_2D
, vg_ui
.tex_glyphs
);
487 glUniform1i( glGetUniformLocation( _shader_ui
.id
, "uTexGlyphs" ), 0 );
489 else if( shader
== k_ui_shader_image
){
490 glUseProgram( _shader_ui_image
.id
);
491 glUniformMatrix3fv( glGetUniformLocation( _shader_ui_image
.id
, "uPv" ), 1,
492 GL_FALSE
, (float *)view
);
493 glUniform1i( glGetUniformLocation(_shader_ui_image
.id
,"uTexImage"), 0 );
496 vg_fatal_error( "Invalid UI shader (%d)\n", shader
);
498 glDrawElements( GL_TRIANGLES
, indice_count
, GL_UNSIGNED_SHORT
,
499 (void *)(vg_ui
.indice_start
*sizeof(u16
)) );
501 glDisable( GL_BLEND
);
503 vg_ui
.indice_start
= vg_ui
.cur_indice
;
504 vg_ui
.vert_start
= vg_ui
.cur_vert
;
507 static void ui_fill_rect( ui_rect rect
, u32 colour
, ui_px uv
[4] )
509 /* this if far from ideal but stops us from crashing */
510 if( (vg_ui
.cur_vert
+ 4 > vg_ui
.max_verts
) ||
511 (vg_ui
.cur_indice
+ 6 > vg_ui
.max_indices
))
514 struct ui_vert
*vertices
= &vg_ui
.vertex_buffer
[ vg_ui
.cur_vert
];
515 u16
*indices
= &vg_ui
.indice_buffer
[ vg_ui
.cur_indice
];
517 for( int i
=0; i
<4; i
++ ){
518 vertices
[i
].colour
= colour
;
521 vertices
[0].co
[0] = rect
[0];
522 vertices
[0].co
[1] = rect
[1];
523 vertices
[0].uv
[0] = uv
[0];
524 vertices
[0].uv
[1] = uv
[1];
525 vertices
[1].co
[0] = rect
[0]+rect
[2];
526 vertices
[1].co
[1] = rect
[1];
527 vertices
[1].uv
[0] = uv
[2];
528 vertices
[1].uv
[1] = uv
[1];
529 vertices
[2].co
[0] = rect
[0]+rect
[2];
530 vertices
[2].co
[1] = rect
[1]+rect
[3];
531 vertices
[2].uv
[0] = uv
[2];
532 vertices
[2].uv
[1] = uv
[3];
533 vertices
[3].co
[0] = rect
[0];
534 vertices
[3].co
[1] = rect
[1]+rect
[3];
535 vertices
[3].uv
[0] = uv
[0];
536 vertices
[3].uv
[1] = uv
[3];
537 u16 ind_start
= vg_ui
.cur_vert
;
539 u16 start
= vg_ui
.cur_vert
;
540 u32 mesh
[] = { 0,2,1, 0,3,2 };
542 for( u32 i
=0; i
<vg_list_size(mesh
); i
++ ){
543 indices
[i
] = start
+mesh
[i
];
546 vg_ui
.cur_indice
+= 6;
550 static void ui_fill( ui_rect rect
, u32 colour
)
552 ui_fill_rect( rect
, colour
, (ui_px
[4]){ 4,4,4,4 } );
555 static void ui_outline( ui_rect rect
, ui_px thickness
, u32 colour
)
557 /* this if far from ideal but stops us from crashing */
558 if( (vg_ui
.cur_vert
+ 8 > vg_ui
.max_verts
) ||
559 (vg_ui
.cur_indice
+ 24 > vg_ui
.max_indices
))
562 struct ui_vert
*vertices
= &vg_ui
.vertex_buffer
[ vg_ui
.cur_vert
];
563 u16
*indices
= &vg_ui
.indice_buffer
[ vg_ui
.cur_indice
];
565 for( int i
=0; i
<8; i
++ ){
566 vertices
[i
].uv
[0] = 4;
567 vertices
[i
].uv
[1] = 4;
568 vertices
[i
].colour
= colour
;
571 vertices
[0].co
[0] = rect
[0];
572 vertices
[0].co
[1] = rect
[1];
573 vertices
[1].co
[0] = rect
[0]+rect
[2];
574 vertices
[1].co
[1] = rect
[1];
575 vertices
[2].co
[0] = rect
[0]+rect
[2];
576 vertices
[2].co
[1] = rect
[1]+rect
[3];
577 vertices
[3].co
[0] = rect
[0];
578 vertices
[3].co
[1] = rect
[1]+rect
[3];
579 vertices
[4].co
[0] = vertices
[0].co
[0]-thickness
;
580 vertices
[4].co
[1] = vertices
[0].co
[1]-thickness
;
581 vertices
[5].co
[0] = vertices
[1].co
[0]+thickness
;
582 vertices
[5].co
[1] = vertices
[1].co
[1]-thickness
;
583 vertices
[6].co
[0] = vertices
[2].co
[0]+thickness
;
584 vertices
[6].co
[1] = vertices
[2].co
[1]+thickness
;
585 vertices
[7].co
[0] = vertices
[3].co
[0]-thickness
;
586 vertices
[7].co
[1] = vertices
[3].co
[1]+thickness
;
588 u16 start
= vg_ui
.cur_vert
;
589 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 };
591 for( u32 i
=0; i
<vg_list_size(mesh
); i
++ ){
592 indices
[i
] = start
+mesh
[i
];
595 vg_ui
.cur_indice
+= 24;
599 static void ui_split( ui_rect rect
,
600 enum ui_axis other
, ui_px width
, ui_px gap
,
601 ui_rect l
, ui_rect r
)
603 enum ui_axis dir
= other
^ 0x1;
605 if( width
< 0 ) width
= rect
[ 2+dir
] + width
;
608 rect_copy( rect
, temp
);
610 l
[ dir
] = temp
[ dir
];
611 r
[ dir
] = temp
[ dir
] + width
+ (gap
/2);
612 l
[ other
] = temp
[ other
];
613 r
[ other
] = temp
[ other
];
614 l
[ 2+dir
] = width
- (gap
/2);
615 r
[ 2+dir
] = temp
[ 2+dir
] - width
- (gap
/2);
616 l
[ 2+other
] = temp
[ 2+other
];
617 r
[ 2+other
] = temp
[ 2+other
];
620 static ui_px
ui_text_line_width( const char *str
);
622 static void ui_rect_center( ui_rect parent
, ui_rect rect
)
624 rect
[0] = parent
[0] + (parent
[2]-rect
[2])/2;
625 rect
[1] = parent
[1] + (parent
[3]-rect
[3])/2;
628 static void ui_fit_item( ui_rect rect
, ui_px size
[2], ui_rect d
)
630 i32 rp
= (i32
)rect
[2] * (i32
)size
[1],
631 rc
= (i32
)size
[0] * (i32
)rect
[3];
633 enum ui_axis dir
, other
;
634 if( rc
> rp
) dir
= k_ui_axis_h
;
635 else dir
= k_ui_axis_v
;
638 d
[2+dir
] = rect
[2+dir
];
639 d
[2+other
] = (rect
[2+dir
] * size
[other
]) / size
[dir
];
641 ui_rect_center( rect
, d
);
644 static void ui_split_ratio( ui_rect rect
, enum ui_axis dir
, float ratio
,
645 ui_px gap
, ui_rect l
, ui_rect r
)
647 ui_px width
= (float)rect
[ 2+(dir
^0x1) ] * ratio
;
648 ui_split( rect
, dir
, width
, gap
, l
, r
);
651 static void ui_rect_pad( ui_rect rect
, ui_px pad
[2] )
659 static ui_px
ui_text_line_width( const char *str
)
662 const char *_c
= str
;
665 while( (c
= *(_c
++)) ){
666 if( c
>= 32 ) length
++;
667 else if( c
== '\n' ) break;
673 static ui_px
ui_text_string_height( const char *str
)
676 const char *_c
= str
;
679 while( (c
= *(_c
++)) ){
680 if( c
== '\n' ) height
++;
686 static ui_px
ui_text_aligned_x( const char *str
, ui_rect rect
, ui_px scale
,
687 enum ui_align align
)
689 enum ui_align lwr
= k_ui_align_lwr
& align
;
690 if( lwr
== k_ui_align_left
){
694 ui_px width
= ui_text_line_width( str
) * scale
;
696 if( lwr
== k_ui_align_right
)
697 return rect
[0] + rect
[2]-width
;
699 return rect
[0] + (rect
[2]-width
)/2;
703 static ui_px
ui_min( ui_px a
, ui_px b
){ return a
<b
?a
:b
; }
704 static ui_px
ui_max( ui_px a
, ui_px b
){ return a
>b
?a
:b
; }
705 static ui_px
ui_clamp( ui_px a
, ui_px min
, ui_px max
)
707 return ui_min( max
, ui_max( a
, min
) );
710 static int ui_clip( ui_rect parent
, ui_rect child
, ui_rect clipped
)
712 ui_px parent_max
[2], child_max
[2];
713 parent_max
[0] = parent
[0]+parent
[2];
714 parent_max
[1] = parent
[1]+parent
[3];
715 child_max
[0] = child
[0]+child
[2];
716 child_max
[1] = child
[1]+child
[3];
718 clipped
[0] = ui_clamp( child
[0], parent
[0], parent_max
[0] );
719 clipped
[1] = ui_clamp( child
[1], parent
[1], parent_max
[1] );
720 clipped
[2] = ui_clamp( child_max
[0], parent
[0], parent_max
[0] );
721 clipped
[3] = ui_clamp( child_max
[1], parent
[1], parent_max
[1] );
723 if( clipped
[0] == clipped
[2] ||
724 clipped
[1] == clipped
[3] )
727 clipped
[2] -= clipped
[0];
728 clipped
[3] -= clipped
[1];
733 static int ui_inside_rect( ui_rect rect
, ui_px co
[2] )
735 if( co
[0] >= rect
[0] &&
737 co
[0] < rect
[0]+rect
[2] &&
738 co
[1] < rect
[1]+rect
[3] )
746 static int ui_click_down( u32 mask
)
748 if( vg_ui
.ignore_input_frames
) return 0;
749 if( (vg_ui
.mouse_state
[0] & mask
) &&
750 !(vg_ui
.mouse_state
[1] & mask
) )
756 static int ui_clicking( u32 mask
)
758 if( vg_ui
.ignore_input_frames
) return 0;
759 return vg_ui
.mouse_state
[0] & mask
;
762 static int ui_click_up( u32 mask
)
764 if( vg_ui
.ignore_input_frames
) return 0;
765 if( (vg_ui
.mouse_state
[1] & mask
) &&
766 !(vg_ui
.mouse_state
[0] & mask
) )
772 static void ui_prerender(void)
775 vg_ui
.mouse_state
[1] = vg_ui
.mouse_state
[0];
776 vg_ui
.mouse_state
[0] = SDL_GetMouseState( &x
, &y
);
781 vg_ui
.cur_indice
= 0;
782 vg_ui
.vert_start
= 0;
783 vg_ui
.indice_start
= 0;
784 vg_ui
.focused_control_hit
= 0;
785 vg_ui
.cursor
= k_ui_cursor_default
;
786 vg_ui
.wants_mouse
= 0;
788 if( vg_ui
.ignore_input_frames
){
789 vg_ui
.ignore_input_frames
--;
793 if( ui_click_down(UI_MOUSE_LEFT
)||ui_click_down(UI_MOUSE_MIDDLE
) ){
794 vg_ui
.mouse_click
[0] = vg_ui
.mouse
[0];
795 vg_ui
.mouse_click
[1] = vg_ui
.mouse
[1];
799 static u32
ui_colour( enum ui_scheme_colour id
)
801 return vg_ui
.scheme
[ id
];
804 /* get an appropriately contrasting colour given the base */
805 static u32
ui_colourcont( enum ui_scheme_colour id
)
807 if ( id
< k_ui_bg
+6 ) return ui_colour( k_ui_fg
);
808 else if( id
< k_ui_fg
) return ui_colour( k_ui_bg
+1 );
809 else if( id
< k_ui_hue
) return ui_colour( k_ui_bg
+3 );
810 else if( id
< k_ui_red
+k_ui_brighter
) return ui_colour( k_ui_fg
);
811 else return ui_colour( k_ui_fg
+1 );
814 static void ui_hex_to_norm( u32 hex
, v4f norm
)
816 norm
[0] = ((hex
) & 0xff);
817 norm
[1] = ((hex
>>8 ) & 0xff);
818 norm
[2] = ((hex
>>16) & 0xff);
819 norm
[3] = ((hex
>>24) & 0xff);
820 v4_muls( norm
, 1.0f
/255.0f
, norm
);
823 static u32
ui_ntext( ui_rect rect
, const char *str
, u32 len
, ui_px scale
,
824 enum ui_align align
, u32 colour
)
827 if( colour
== 0 ) colour
= ui_colour( k_ui_fg
);
829 colour
&= 0x00ffffff;
831 const char *_c
= str
;
834 text_cursor
[0] = ui_text_aligned_x( str
, rect
, scale
, align
);
835 text_cursor
[1] = rect
[1];
836 text_cursor
[2] = 8*scale
;
837 text_cursor
[3] = 14*scale
;
839 u32 printed_chars
= 0;
841 if( align
& (k_ui_align_middle
|k_ui_align_bottom
) ){
842 ui_px height
= ui_text_string_height( str
) * scale
;
844 if( align
& k_ui_align_bottom
)
845 text_cursor
[1] += rect
[3]-height
;
847 text_cursor
[1] += (rect
[3]-height
)/2;
850 while( (c
= *(_c
++)) ){
851 if( printed_chars
>= len
){
853 text_cursor
[1] += 14*scale
;
854 text_cursor
[0] = ui_text_aligned_x( _c
, rect
, scale
, align
);
855 text_cursor
[0] -= UI_GLYPH_SPACING_X
*scale
;
858 u8 glyph_index
= '\x90';
859 glyph_base
[0] = glyph_index
& 0xf;
860 glyph_base
[1] = (glyph_index
-glyph_base
[0])>>4;
864 ui_fill_rect( text_cursor
, 0x00ffffff, (ui_px
[4])
872 text_cursor
[0] += UI_GLYPH_SPACING_X
*scale
;
876 text_cursor
[1] += 14*scale
;
877 text_cursor
[0] = ui_text_aligned_x( _c
, rect
, scale
, align
);
884 glyph_base
[0] = glyph_index
& 0xf;
885 glyph_base
[1] = (glyph_index
-glyph_base
[0])>>4;
891 if( ui_clip( rect
, text_cursor
, rect_char
) ){
892 ui_fill_rect( rect_char
, colour
, (ui_px
[4])
901 else if( c
== '\x1B' ){
905 for( int i
=0; i
<3; i
++ ){
911 case '0': colour
= ui_colour( k_ui_fg
); break;
912 case '3'|'0'<<8: colour
= ui_colour( k_ui_bg
); break;
913 case '3'|'1'<<8: colour
= ui_colour( k_ui_red
); break;
914 case '3'|'2'<<8: colour
= ui_colour( k_ui_green
); break;
915 case '3'|'3'<<8: colour
= ui_colour( k_ui_yellow
); break;
916 case '3'|'4'<<8: colour
= ui_colour( k_ui_blue
); break;
917 case '3'|'5'<<8: colour
= ui_colour( k_ui_purple
); break;
918 case '3'|'6'<<8: colour
= ui_colour( k_ui_aqua
); break;
919 case '3'|'7'<<8: colour
= 0xffffffff; break;
922 colour
&= 0x00ffffff;
926 colour_id
|= _c
[i
] << (i
*8);
936 else if( c
== '\t' ){
937 text_cursor
[0] += UI_GLYPH_SPACING_X
*scale
*4;
942 text_cursor
[0] += UI_GLYPH_SPACING_X
*scale
;
946 return printed_chars
;
949 static void ui_text( ui_rect rect
, const char *str
, ui_px scale
,
950 enum ui_align align
, u32 colour
)
952 ui_ntext( rect
, str
, 1024, scale
, align
, colour
);
955 static void ui_image( ui_rect rect
, GLuint image
)
957 ui_flush( k_ui_shader_colour
);
958 glActiveTexture( GL_TEXTURE0
);
959 glBindTexture( GL_TEXTURE_2D
, image
);
960 ui_fill_rect( rect
, 0xffffffff, (ui_px
[4]){ 0,128, 128, 0 } );
961 ui_flush( k_ui_shader_image
);
964 static u32
v4f_u32_colour( v4f colour
)
966 u32 r
= colour
[0] * 255.0f
,
967 g
= colour
[1] * 255.0f
,
968 b
= colour
[2] * 255.0f
,
969 a
= colour
[3] * 255.0f
;
971 return r
| (g
<<8) | (b
<<16) | (a
<<24);
974 static void ui_defocus_all(void)
976 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
980 vg_ui
.focused_control_id
= NULL
;
981 vg_ui
.focused_control_hit
= 0;
982 vg_ui
.focused_control_type
= k_ui_control_none
;
985 static int ui_colourbutton( ui_rect rect
, enum ui_scheme_colour colour
)
987 int clickup
= ui_click_up(UI_MOUSE_LEFT
),
988 click
= ui_clicking(UI_MOUSE_LEFT
) | clickup
,
989 target
= ui_inside_rect( rect
, vg_ui
.mouse_click
) && click
,
990 hover
= ui_inside_rect( rect
, vg_ui
.mouse
);
992 u32 col_base
= vg_ui
.scheme
[ colour
],
993 col_highlight
= vg_ui
.scheme
[ k_ui_fg
],
994 col_hover
= vg_ui
.scheme
[ colour
+ k_ui_brighter
];
996 if( vg_ui
.focused_control_type
!= k_ui_control_none
){
1004 vg_ui
.cursor
= k_ui_cursor_hand
;
1011 ui_fill( rect
, col_highlight
);
1012 vg_ui
.ignore_input_frames
= 2;
1013 rect_copy( rect
, vg_ui
.click_fader
);
1015 rect_copy( rect
, vg_ui
.click_fader_end
);
1016 vg_ui
.click_fader_end
[3] = 0;
1017 ui_rect_center( rect
, vg_ui
.click_fader_end
);
1019 vg_ui
.click_fade_opacity
= 1.0f
;
1024 ui_fill( rect
, col_highlight
);
1029 ui_fill( rect
, col_base
);
1030 ui_outline( rect
, 1, col_highlight
);
1035 ui_fill( rect
, col_base
);
1041 ui_fill( rect
, col_hover
);
1045 ui_fill( rect
, col_base
);
1051 static int ui_colourbutton_text( ui_rect rect
, const char *string
, ui_px scale
,
1052 enum ui_scheme_colour colour
)
1054 int result
= ui_colourbutton( rect
, colour
);
1055 ui_rect t
= { 0,0, ui_text_line_width( string
)*scale
, 14*scale
};
1056 ui_rect_center( rect
, t
);
1057 ui_text( t
, string
, scale
, k_ui_align_left
, ui_colourcont(colour
) );
1061 static int ui_button_text( ui_rect rect
, const char *string
, ui_px scale
)
1063 return ui_colourbutton_text( rect
, string
, scale
, k_ui_bg
+4 );
1066 static void ui_enum_post(void);
1067 static void ui_postrender(void)
1069 if( vg_ui
.click_fade_opacity
> 0.0f
){
1070 float scale
= vg_ui
.click_fade_opacity
;
1071 scale
= vg_maxf( 1.0f
/255.0f
, scale
*scale
);
1073 vg_ui
.click_fade_opacity
-= vg
.time_frame_delta
* 3.8f
;
1074 u32 colour
= (0x00ffffff & ui_colour(k_ui_fg
))|0x7f000000;
1076 v4f begin
, end
, dest
;
1077 for( int i
=0; i
<4; i
++ ){
1078 begin
[i
] = vg_ui
.click_fader
[i
];
1079 end
[i
] = vg_ui
.click_fader_end
[i
]+1;
1082 v4_lerp( end
, begin
, scale
, dest
);
1085 for( int i
=0; i
<4; i
++ ){
1089 ui_fill( rect
, colour
);
1092 if( vg_ui
.focused_control_type
== k_ui_control_dropdown
){
1096 ui_flush( k_ui_shader_colour
);
1098 if( !vg_ui
.focused_control_hit
){
1102 if( vg_ui
.wants_mouse
){
1103 SDL_SetWindowGrab( vg
.window
, SDL_FALSE
);
1104 SDL_SetRelativeMouseMode( SDL_FALSE
);
1107 SDL_SetWindowGrab( vg
.window
, SDL_TRUE
);
1108 SDL_SetRelativeMouseMode( SDL_TRUE
);
1111 SDL_SetCursor( vg_ui
.cursor_map
[ vg_ui
.cursor
] );
1115 static void ui_dev_colourview(void)
1117 ui_rect window
= {vg
.window_x
-256,0,256,vg
.window_y
}, swatch
;
1119 const char *names
[vg_list_size(vg_ui
.scheme
)] = {
1120 [k_ui_bg
] = "k_ui_bg", "k_ui_bg+1", "k_ui_bg+2", "k_ui_bg+3",
1121 "k_ui_bg+4", "k_ui_bg+5", "k_ui_bg+6", "k_ui_bg+7",
1123 [k_ui_fg
] = "k_ui_fg", "k_ui_fg+1", "k_ui_fg+2", "k_ui_fg+3",
1124 "k_ui_fg+4", "k_ui_fg+5", "k_ui_fg+6", "k_ui_fg+7",
1126 [k_ui_red
] = "k_ui_red", "k_ui_orange", "k_ui_yellow", "k_ui_green",
1127 "k_ui_aqua", "k_ui_blue", "k_ui_purple", "k_ui_gray",
1128 "k_ui_red+8","k_ui_orange+8","k_ui_yellow+8","k_ui_green+8",
1129 "k_ui_aqua+8","k_ui_blue+8","k_ui_purple+8","k_ui_gray+8" };
1132 ui_split_ratio( window
, k_ui_axis_v
, 0.5f
, 0, col
[0], col
[1] );
1134 for( int i
=0; i
<vg_list_size(vg_ui
.scheme
); i
++ ){
1135 int which
= (i
/8)%2;
1137 ui_split( col
[which
], k_ui_axis_h
, 24, 0, swatch
, col
[which
] );
1138 ui_fill( swatch
, ui_colour(i
) );
1141 ui_text(swatch
, names
[i
], 1, k_ui_align_middle_left
, ui_colourcont(i
));
1147 * -----------------------------------------------------------------------------
1150 static int ui_checkbox( ui_rect rect
, const char *str_label
, int *data
)
1153 ui_split( rect
, k_ui_axis_v
, -rect
[3], 0, label
, box
);
1154 ui_text( label
, str_label
, 1, k_ui_align_middle_left
, 0 );
1156 int changed
= ui_colourbutton( box
, k_ui_bg
);
1158 *data
= (*data
) ^ 0x1;
1161 ui_rect_pad( box
, (ui_px
[2]){4,4} );
1162 ui_fill( box
, ui_colour( k_ui_orange
) );
1170 * -----------------------------------------------------------------------------
1174 * unfortunately no return value since we only find out that event in the
1177 static void ui_enum( ui_rect rect
, const char *str_label
,
1178 struct ui_dropdown_opt
*options
, u32 len
,
1179 struct ui_dropdown_value
*value
)
1182 ui_split( rect
, k_ui_axis_v
, ui_text_line_width( str_label
) + 8,
1184 ui_text( label
, str_label
, 1, k_ui_align_middle_left
, 0 );
1186 if( ui_button_text( box
, options
[ value
->index
].alias
, 1 ) ){
1187 vg_ui
.focused_control_type
= k_ui_control_dropdown
;
1188 vg_ui
.ptr_dropdown
= value
;
1189 vg_ui
.dropdown
.option_count
= len
;
1190 vg_ui
.dropdown
.options
= options
;
1191 rect_copy( box
, vg_ui
.dropdown
.rect
);
1195 static void ui_enum_post(void)
1198 rect_copy( vg_ui
.dropdown
.rect
, drawer
);
1199 drawer
[3] *= vg_ui
.dropdown
.option_count
;
1202 int clickany
= ui_click_up(UI_MOUSE_LEFT
|UI_MOUSE_RIGHT
|UI_MOUSE_MIDDLE
),
1203 hover
= ui_inside_rect( drawer
, vg_ui
.mouse
);
1205 if( clickany
&& !hover
){
1210 vg_ui
.focused_control_type
= k_ui_control_none
;
1211 struct ui_dropdown_value
*value
= vg_ui
.ptr_dropdown
;
1213 for( u32 i
=0; i
<vg_ui
.dropdown
.option_count
; i
++ ){
1215 ui_split( drawer
, k_ui_axis_h
, vg_ui
.dropdown
.rect
[3], 0, button
,drawer
);
1217 enum ui_scheme_colour colour
= k_ui_bg
+3;
1218 if( i
== value
->index
) colour
= k_ui_orange
;
1220 if( ui_colourbutton_text( button
, vg_ui
.dropdown
.options
[i
].alias
, 1,
1223 value
->value
= vg_ui
.dropdown
.options
[i
].value
;
1229 vg_ui
.focused_control_type
= k_ui_control_dropdown
;
1232 vg_ui
.focused_control_hit
= 1;
1237 * -----------------------------------------------------------------------------
1240 static void _ui_textbox_make_selection( int *start
, int *end
)
1242 *start
= VG_MIN( vg_ui
.textbox
.cursor_pos
, vg_ui
.textbox
.cursor_user
);
1243 *end
= VG_MAX( vg_ui
.textbox
.cursor_pos
, vg_ui
.textbox
.cursor_user
);
1246 static void _ui_textbox_move_cursor( int *cursor0
, int *cursor1
,
1247 int dir
, int snap_together
)
1249 *cursor0
= VG_MAX( 0, vg_ui
.textbox
.cursor_user
+ dir
);
1252 VG_MIN( vg_ui
.textbox
.len
-1, strlen( vg_ui
.textbuf
)),
1256 *cursor1
= *cursor0
;
1259 static int _ui_textbox_makeroom( int datastart
, int length
)
1261 int move_to
= VG_MIN( datastart
+length
, vg_ui
.textbox
.len
-1 );
1262 int move_amount
= strlen( vg_ui
.textbuf
)-datastart
;
1263 int move_end
= VG_MIN( move_to
+move_amount
, vg_ui
.textbox
.len
-1 );
1264 move_amount
= move_end
-move_to
;
1267 memmove( &vg_ui
.textbuf
[ move_to
],
1268 &vg_ui
.textbuf
[ datastart
],
1271 vg_ui
.textbuf
[ move_end
] = '\0';
1273 return VG_MIN( length
, vg_ui
.textbox
.len
-datastart
-1 );
1276 static int _ui_textbox_delete_char( int direction
)
1279 _ui_textbox_make_selection( &start
, &end
);
1281 /* There is no selection */
1283 if( direction
== 1 ) end
= VG_MIN( end
+1, strlen( vg_ui
.textbuf
) );
1284 else if( direction
== -1 ) start
= VG_MAX( start
-1, 0 );
1287 /* Still no selction, no need to do anything */
1291 /* Copy the end->terminator to start */
1292 int remaining_length
= strlen( vg_ui
.textbuf
)+1-end
;
1293 memmove( &vg_ui
.textbuf
[ start
],
1294 &vg_ui
.textbuf
[ end
],
1299 static void _ui_textbox_to_clipboard(void)
1302 _ui_textbox_make_selection( &start
, &end
);
1306 memcpy( buffer
, &vg_ui
.textbuf
[ start
], end
-start
);
1307 buffer
[ end
-start
] = 0x00;
1308 SDL_SetClipboardText( buffer
);
1312 static void _ui_textbox_clipboard_paste(void)
1314 if( !SDL_HasClipboardText() )
1317 char *text
= SDL_GetClipboardText();
1322 int datastart
= _ui_textbox_delete_char( 0 );
1323 int length
= strlen( text
);
1324 int cpylength
= _ui_textbox_makeroom( datastart
, length
);
1326 memcpy( vg_ui
.textbuf
+ datastart
, text
, cpylength
);
1327 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1328 &vg_ui
.textbox
.cursor_pos
, cpylength
, 1 );
1332 static void _ui_textbox_put_char( char c
)
1334 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char(0);
1336 if( _ui_textbox_makeroom( vg_ui
.textbox
.cursor_user
, 1 ) )
1337 vg_ui
.textbuf
[ vg_ui
.textbox
.cursor_user
] = c
;
1339 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1340 &vg_ui
.textbox
.cursor_pos
, 1, 1 );
1343 /* Receed secondary cursor */
1344 static void _ui_textbox_left_select(void)
1346 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, -1, 0 );
1349 /* Match and receed both cursors */
1350 static void _ui_textbox_left(void)
1352 int cursor_diff
= vg_ui
.textbox
.cursor_pos
- vg_ui
.textbox
.cursor_user
? 0: 1;
1354 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1355 &vg_ui
.textbox
.cursor_pos
, -cursor_diff
, 1 );
1358 static void _ui_textbox_up(void)
1360 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
){
1361 int line_begin
= vg_ui
.textbox
.cursor_user
;
1363 while( line_begin
){
1364 if( vg_ui
.textbuf
[ line_begin
-1 ] == '\n' ){
1372 int line_above_begin
= line_begin
-1;
1374 while( line_above_begin
){
1375 if( vg_ui
.textbuf
[ line_above_begin
-1 ] == '\n' ){
1379 line_above_begin
--;
1382 int offset
= vg_ui
.textbox
.cursor_user
- line_begin
,
1383 line_length_above
= line_begin
- line_above_begin
-1;
1385 offset
= VG_MIN( line_length_above
, offset
);
1387 vg_ui
.textbox
.cursor_user
= line_above_begin
+offset
;
1388 vg_ui
.textbox
.cursor_pos
= line_above_begin
+offset
;
1391 vg_ui
.textbox
.cursor_user
= line_begin
;
1392 vg_ui
.textbox
.cursor_pos
= line_begin
;
1396 if( vg_ui
.textbox
.callbacks
.up
){
1397 vg_ui
.textbox
.callbacks
.up( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1402 static void _ui_textbox_down(void)
1404 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
){
1405 int line_begin
= vg_ui
.textbox
.cursor_user
;
1407 while( line_begin
){
1408 if( vg_ui
.textbuf
[ line_begin
-1 ] == '\n' ){
1415 int line_below_begin
= vg_ui
.textbox
.cursor_user
;
1418 if( vg_ui
.textbuf
[ line_below_begin
] == '\0' ){
1419 vg_ui
.textbox
.cursor_user
= line_below_begin
;
1420 vg_ui
.textbox
.cursor_pos
= line_below_begin
;
1424 if( vg_ui
.textbuf
[ line_below_begin
] == '\n' ){
1425 line_below_begin
++;
1429 line_below_begin
++;
1432 int line_below_end
= line_below_begin
;
1434 if( vg_ui
.textbuf
[ line_below_end
] == '\0' ||
1435 vg_ui
.textbuf
[ line_below_end
] == '\n' ){
1442 int offset
= vg_ui
.textbox
.cursor_user
- line_begin
,
1443 line_length_below
= line_below_end
- line_below_begin
-1;
1445 offset
= VG_MIN( line_length_below
, offset
);
1447 vg_ui
.textbox
.cursor_user
= line_below_begin
+offset
;
1448 vg_ui
.textbox
.cursor_pos
= line_below_begin
+offset
;
1451 if( vg_ui
.textbox
.callbacks
.down
){
1452 vg_ui
.textbox
.callbacks
.down( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1457 static void _ui_textbox_right_select(void)
1459 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, 1, 0 );
1462 static void _ui_textbox_right(void)
1464 int cursor_diff
= vg_ui
.textbox
.cursor_pos
- vg_ui
.textbox
.cursor_user
? 0: 1;
1466 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1467 &vg_ui
.textbox
.cursor_pos
, +cursor_diff
, 1 );
1470 static void _ui_textbox_backspace(void)
1472 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1473 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char( -1 );
1474 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1476 if( vg_ui
.textbox
.callbacks
.change
){
1477 vg_ui
.textbox
.callbacks
.change( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1482 static void _ui_textbox_delete(void)
1484 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1485 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char( 1 );
1486 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1488 if( vg_ui
.textbox
.callbacks
.change
){
1489 vg_ui
.textbox
.callbacks
.change( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1494 static void _ui_textbox_home_select(void)
1496 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, -10000, 0 );
1499 static void _ui_textbox_home(void)
1501 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1502 &vg_ui
.textbox
.cursor_pos
, -10000, 1 );
1505 static void _ui_textbox_end_select(void)
1507 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, 10000, 0 );
1510 static void _ui_textbox_end(void)
1512 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1513 &vg_ui
.textbox
.cursor_pos
,
1514 vg_ui
.textbox
.len
-1, 1 );
1517 static void _ui_textbox_select_all(void)
1519 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, 10000, 0);
1520 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_pos
, NULL
, -10000, 0);
1523 static void _ui_textbox_cut(void)
1525 _ui_textbox_to_clipboard();
1526 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char(0);
1527 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1530 static void _ui_textbox_enter(void)
1532 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1533 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
){
1534 _ui_textbox_put_char( '\n' );
1537 if( !(vg_ui
.textbox
.flags
& UI_TEXTBOX_AUTOFOCUS
) )
1541 if( vg_ui
.textbox
.callbacks
.enter
){
1542 vg_ui
.textbox
.callbacks
.enter( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1548 * based on a visual character coordinate relative to the anchor of the textbox,
1549 * this works out the linear place in the buffer that coordinate maps to
1551 * input coordinates go in co[0], co[1], and the result index is in co[2]
1553 static void _ui_textbox_calc_index_from_grid( int co
[3], int wrap_length
)
1558 while( (c
= vg_ui
.textbuf
[i
[2]]) ){
1559 if( i
[1]==co
[1] && i
[0]>=co
[0] ) break;
1561 if( i
[0] >= wrap_length
){
1566 if( c
>= 32 && c
<= 126 ){
1570 else if( c
== '\n' ){
1573 if( i
[1] > co
[1] ) break;
1587 * based on the index specied in co[2], work out the visual character
1588 * coordinates and store them in co[0], co[1]
1590 static void _ui_textbox_index_calc_coords( int co
[3], int wrap_length
)
1598 while( (c
= vg_ui
.textbuf
[i
++]) ){
1599 if( i
> co
[2] ) break;
1600 if( co
[0] >= wrap_length
){
1604 if( c
>= 32 && c
<= 126 ) co
[0] ++;
1605 else if( c
== '\n' ){
1613 * calculate the number of characters remaining until either:
1614 * - the wrap_length limit is hit
1615 * - end of the line/string
1617 * index must be fully populated with visual X/Y, and linear index
1619 static int _ui_textbox_run_remaining( int index
[3], int wrap_length
)
1621 int i
=0, printed_chars
=0;
1623 while( (c
= vg_ui
.textbuf
[index
[2] + (i
++)]) ){
1624 if( index
[0]+i
>= wrap_length
) break;
1625 if( c
>= 32 && c
<= 126 ) printed_chars
++;
1626 else if( c
== '\n' ) break;
1629 return printed_chars
+1;
1632 static int ui_textbox( ui_rect rect
, char *buf
, u32 len
, u32 flags
,
1633 struct ui_textbox_callbacks
*callbacks
)
1635 int clickup
= ui_click_up(UI_MOUSE_LEFT
),
1636 clickdown
= ui_click_down(UI_MOUSE_LEFT
),
1637 click
= ui_clicking(UI_MOUSE_LEFT
) | clickup
,
1638 target
= ui_inside_rect( rect
, vg_ui
.mouse_click
) && click
,
1639 hover
= ui_inside_rect( rect
, vg_ui
.mouse
);
1641 /* allow instant transitions from textbox->textbox */
1642 if( (vg_ui
.focused_control_type
!= k_ui_control_none
) &&
1643 (vg_ui
.focused_control_type
!= k_ui_control_textbox
) ){
1651 u32 col_base
= ui_colour( k_ui_bg
),
1652 col_highlight
= ui_colour( k_ui_fg
),
1653 col_cursor
= (0x00ffffff & ui_colour(k_ui_fg
))|0x7f000000;
1658 rect_copy( rect
, text_rect
);
1660 if( flags
& UI_TEXTBOX_MULTILINE
) text_rect
[3] = rect
[3]-16;
1661 else text_rect
[3] = 14;
1664 ui_rect_center( rect
, text_rect
);
1666 ui_px wrap_length
= 1024;
1668 if( flags
& UI_TEXTBOX_WRAP
)
1669 wrap_length
= text_rect
[2] / UI_GLYPH_SPACING_X
;
1672 vg_ui
.cursor
= k_ui_cursor_ibeam
;
1675 if( vg_ui
.focused_control_id
== buf
){
1676 ui_fill( rect
, col_base
);
1677 ui_ntext( text_rect
, buf
, wrap_length
, 1, k_ui_align_left
, 0 );
1679 if( !(flags
& UI_TEXTBOX_AUTOFOCUS
) && ((clickup
||clickdown
) && !target
)){
1683 vg_ui
.focused_control_hit
= 1;
1684 if( click
&& target
){
1686 (vg_ui
.mouse_click
[0] - text_rect
[0]) / UI_GLYPH_SPACING_X
,
1687 (vg_ui
.mouse_click
[1] - text_rect
[1]) / 14,
1691 (vg_ui
.mouse
[0] - text_rect
[0]) / UI_GLYPH_SPACING_X
,
1692 (vg_ui
.mouse
[1] - text_rect
[1]) / 14,
1696 if( flags
& UI_TEXTBOX_MULTILINE
){
1697 _ui_textbox_calc_index_from_grid( p0
, wrap_length
);
1698 _ui_textbox_calc_index_from_grid( p1
, wrap_length
);
1700 vg_ui
.textbox
.cursor_pos
= p0
[2];
1701 vg_ui
.textbox
.cursor_user
= p1
[2];
1704 int max
= strlen( buf
);
1705 vg_ui
.textbox
.cursor_pos
= VG_MAX( 0, VG_MIN( max
, p0
[0] )),
1706 vg_ui
.textbox
.cursor_user
= VG_MAX( 0, VG_MIN( max
, p1
[0] ));
1710 ui_outline( rect
, -2, vg_ui
.scheme
[ k_ui_orange
] );
1714 int c0
= vg_ui
.textbox
.cursor_pos
,
1715 c1
= vg_ui
.textbox
.cursor_user
,
1716 start
= VG_MIN( c0
, c1
),
1717 end
= VG_MAX( c0
, c1
),
1720 if( flags
& (UI_TEXTBOX_MULTILINE
|UI_TEXTBOX_WRAP
) ){
1722 int pos
[3], remaining
= chars
;
1725 _ui_textbox_index_calc_coords( pos
, wrap_length
);
1728 cursor
[0] = text_rect
[0] + pos
[0]*UI_GLYPH_SPACING_X
-1;
1729 cursor
[1] = text_rect
[1] + pos
[1]*14;
1732 ui_fill( cursor
, col_cursor
);
1733 rect_copy( cursor
, vg_ui
.click_fader_end
);
1737 int run
= _ui_textbox_run_remaining( pos
, wrap_length
);
1738 run
= VG_MIN( run
, remaining
);
1740 cursor
[0] = text_rect
[0] + pos
[0]*UI_GLYPH_SPACING_X
-1;
1741 cursor
[1] = text_rect
[1] + pos
[1]*14;
1742 cursor
[2] = (float)(run
)*(float)UI_GLYPH_SPACING_X
;
1745 ui_fill( cursor
, col_cursor
);
1752 rect_copy( cursor
, vg_ui
.click_fader_end
);
1756 cursor
[0] = text_rect
[0] + start
*UI_GLYPH_SPACING_X
-1;
1757 cursor
[1] = text_rect
[1];
1764 cursor
[2] = (float)(chars
)*(float)UI_GLYPH_SPACING_X
;
1767 if( (vg_ui
.click_fade_opacity
<=0.0f
) &&
1768 ui_clip( rect
, cursor
, cursor
) ){
1769 ui_fill( cursor
, col_cursor
);
1772 rect_copy( cursor
, vg_ui
.click_fader_end
);
1779 if( click
|| (flags
& UI_TEXTBOX_AUTOFOCUS
) ){
1780 if( (target
&& hover
) || (flags
& UI_TEXTBOX_AUTOFOCUS
) ){
1783 ui_fill( rect
, col_highlight
);
1784 vg_ui
.ignore_input_frames
= 2;
1785 rect_copy( rect
, vg_ui
.click_fader
);
1786 rect_copy( rect
, vg_ui
.click_fader_end
);
1788 vg_ui
.click_fade_opacity
= 1.0f
;
1789 vg_ui
.textbuf
= buf
;
1790 vg_ui
.focused_control_hit
= 1;
1791 vg_ui
.focused_control_type
= k_ui_control_textbox
;
1792 vg_ui
.textbox
.len
= len
;
1793 vg_ui
.textbox
.flags
= flags
;
1794 vg_ui
.textbox
.cursor_pos
= 0;
1795 vg_ui
.textbox
.cursor_user
= 0;
1798 vg_ui
.textbox
.callbacks
= *callbacks
;
1801 vg_ui
.textbox
.callbacks
.change
= NULL
;
1802 vg_ui
.textbox
.callbacks
.down
= NULL
;
1803 vg_ui
.textbox
.callbacks
.up
= NULL
;
1804 vg_ui
.textbox
.callbacks
.enter
= NULL
;
1807 SDL_StartTextInput();
1811 ui_fill( rect
, col_base
);
1814 ui_outline( rect
, -1, col_highlight
);
1817 ui_ntext( text_rect
, buf
, wrap_length
, 1, k_ui_align_left
, 0 );
1823 * -----------------------------------------------------------------------------
1829 static void _ui_proc_key( SDL_Keysym ev
)
1831 if( vg_ui
.focused_control_type
!= k_ui_control_textbox
){
1835 struct textbox_mapping
1840 void (*handler
)(void);
1844 { 0, SDLK_LEFT
, _ui_textbox_left
},
1845 { KMOD_SHIFT
, SDLK_LEFT
, _ui_textbox_left_select
},
1846 { 0, SDLK_RIGHT
, _ui_textbox_right
},
1847 { KMOD_SHIFT
, SDLK_RIGHT
, _ui_textbox_right_select
},
1848 { 0, SDLK_DOWN
, _ui_textbox_down
},
1849 { 0, SDLK_UP
, _ui_textbox_up
},
1850 { 0, SDLK_BACKSPACE
, _ui_textbox_backspace
},
1851 { KMOD_SHIFT
, SDLK_BACKSPACE
, _ui_textbox_backspace
},
1852 { KMOD_CTRL
, SDLK_BACKSPACE
, _ui_textbox_backspace
},
1853 { 0, SDLK_DELETE
, _ui_textbox_delete
},
1854 { 0, SDLK_HOME
, _ui_textbox_home
},
1855 { KMOD_SHIFT
, SDLK_HOME
, _ui_textbox_home_select
},
1856 { 0, SDLK_END
, _ui_textbox_end
},
1857 { KMOD_SHIFT
, SDLK_END
, _ui_textbox_end_select
},
1858 { KMOD_CTRL
, SDLK_a
, _ui_textbox_select_all
},
1859 { KMOD_CTRL
, SDLK_c
, _ui_textbox_to_clipboard
},
1860 { KMOD_CTRL
, SDLK_x
, _ui_textbox_cut
},
1861 { KMOD_CTRL
, SDLK_v
, _ui_textbox_clipboard_paste
},
1862 { 0, SDLK_RETURN
, _ui_textbox_enter
},
1863 { 0, SDLK_ESCAPE
, ui_defocus_all
},
1868 if( ev
.mod
& KMOD_SHIFT
)
1871 if( ev
.mod
& KMOD_CTRL
)
1874 if( ev
.mod
& KMOD_ALT
)
1877 for( int i
=0; i
<vg_list_size( mappings
); i
++ ){
1878 struct textbox_mapping
*mapping
= &mappings
[i
];
1880 if( mapping
->key
== ev
.sym
){
1881 if( mapping
->mod
== 0 ){
1887 else if( (mod
& mapping
->mod
) == mapping
->mod
){
1896 * Callback for text entry mode
1898 VG_STATIC
void ui_proc_utf8( const char *text
)
1900 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1901 const char *ptr
= text
;
1904 if( *ptr
!= '`' ) _ui_textbox_put_char( *ptr
);
1908 if( vg_ui
.textbox
.callbacks
.change
){
1909 vg_ui
.textbox
.callbacks
.change( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1914 static void ui_label( ui_rect rect
, const char *text
, ui_px size
,
1915 ui_px gap
, ui_rect r
)
1918 ui_px width
= (ui_text_line_width(text
)+UI_GLYPH_SPACING_X
) * size
;
1919 ui_split( rect
, k_ui_axis_v
, width
, gap
, l
, r
);
1920 ui_text( l
, text
, 1, k_ui_align_middle_left
, 0 );
1923 #endif /* VG_IMGUI_H */