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 static ui_px k_ui_widget_height
= 28,
79 typedef u32 ui_scheme
[8*4];
81 #define UI_RGB( STDHEX ) 0xff000000 |\
82 ((STDHEX&0x000000ff)<<16) |\
83 ((STDHEX&0x0000ff00) ) |\
84 ((STDHEX&0x00ff0000)>>16)
86 #define UI_TEXTBOX_MULTILINE 0x1
87 #define UI_TEXTBOX_WRAP 0x2
88 #define UI_TEXTBOX_AUTOFOCUS 0x4
90 #define UI_MODAL_OK 0x0
91 #define UI_MODAL_GOOD 0x1
92 #define UI_MODAL_BAD 0x2
93 #define UI_MODAL_WARN 0x3
94 #define UI_MODAL_TYPE_BITS 0x3
96 #define UI_MOUSE_LEFT (SDL_BUTTON(SDL_BUTTON_LEFT))
97 #define UI_MOUSE_RIGHT (SDL_BUTTON(SDL_BUTTON_RIGHT))
98 #define UI_MOUSE_MIDDLE (SDL_BUTTON(SDL_BUTTON_MIDDLE))
101 struct ui_vert
*vertex_buffer
;
103 u32 max_verts
, max_indices
,
104 cur_vert
, cur_indice
,
105 vert_start
, indice_start
;
108 void *focused_control_id
; /* uses the memory location of various locking
114 u32 focused_control_hit
;
115 enum ui_control_type
{
117 k_ui_control_textbox
,
121 focused_control_type
;
123 union{ /* controls that can be focused */
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
);
155 struct ui_modal_callbacks
{
162 GLuint tex_glyphs
, vao
, vbo
, ebo
;
164 ui_px mouse
[2], mouse_click
[2];
166 u32 ignore_input_frames
;
169 ui_rect click_fader
, click_fader_end
;
170 float click_fade_opacity
;
182 SDL_Cursor
*cursor_map
[ k_ui_cursor_max
];
186 [ k_ui_bg
+0 ] = UI_RGB( 0x1d2021 ),
187 [ k_ui_bg
+1 ] = UI_RGB( 0x282828 ),
188 [ k_ui_bg
+2 ] = UI_RGB( 0x3c3836 ),
189 [ k_ui_bg
+3 ] = UI_RGB( 0x504945 ),
190 [ k_ui_bg
+4 ] = UI_RGB( 0x665c54 ),
191 [ k_ui_bg
+5 ] = UI_RGB( 0x7c6f64 ),
192 [ k_ui_bg
+6 ] = UI_RGB( 0x928374 ),
193 [ k_ui_bg
+7 ] = UI_RGB( 0xa89984 ),
195 [ k_ui_fg
+0 ] = UI_RGB( 0xebdbb2 ),
196 [ k_ui_fg
+1 ] = UI_RGB( 0xfbf1c7 ),
197 [ k_ui_fg
+2 ] = UI_RGB( 0xd5c4a1 ),
198 [ k_ui_fg
+3 ] = UI_RGB( 0xbdae93 ),
199 [ k_ui_fg
+4 ] = UI_RGB( 0xa89984 ),
200 [ k_ui_fg
+5 ] = UI_RGB( 0x000000 ),
201 [ k_ui_fg
+6 ] = UI_RGB( 0x000000 ),
202 [ k_ui_fg
+7 ] = UI_RGB( 0x000000 ),
204 [ k_ui_red
] = UI_RGB( 0xcc241d ),
205 [ k_ui_orange
] = UI_RGB( 0xd65d0e ),
206 [ k_ui_yellow
] = UI_RGB( 0xd79921 ),
207 [ k_ui_green
] = UI_RGB( 0x98971a ),
208 [ k_ui_aqua
] = UI_RGB( 0x689d6a ),
209 [ k_ui_blue
] = UI_RGB( 0x458588 ),
210 [ k_ui_purple
] = UI_RGB( 0xb16286 ),
211 [ k_ui_gray
] = UI_RGB( 0x928374 ),
212 [ k_ui_red
+ k_ui_brighter
] = UI_RGB( 0xfb4934 ),
213 [ k_ui_orange
+ k_ui_brighter
] = UI_RGB( 0xfe8019 ),
214 [ k_ui_yellow
+ k_ui_brighter
] = UI_RGB( 0xfabd2f ),
215 [ k_ui_green
+ k_ui_brighter
] = UI_RGB( 0xb8bb26 ),
216 [ k_ui_aqua
+ k_ui_brighter
] = UI_RGB( 0x8ec07c ),
217 [ k_ui_blue
+ k_ui_brighter
] = UI_RGB( 0x83a598 ),
218 [ k_ui_purple
+ k_ui_brighter
] = UI_RGB( 0xd3869b ),
219 [ k_ui_gray
+ k_ui_brighter
] = UI_RGB( 0xa89984 ),
223 static struct vg_shader _shader_ui
=
231 "layout (location=0) in vec2 a_co;"
232 "layout (location=1) in vec2 a_uv;"
233 "layout (location=2) in vec4 a_colour;"
236 "out vec2 aTexCoords;"
242 "gl_Position = vec4( uPv * vec3( a_co, 1.0 ), 1.0 );"
243 "aTexCoords = a_uv * 0.0078125;"
244 "aColour = a_colour;"
253 "uniform sampler2D uTexGlyphs;"
254 "out vec4 FragColor;"
256 "in vec2 aTexCoords;"
261 "vec2 rand_hash22( vec2 p )"
263 "vec3 p3 = fract(vec3(p.xyx) * 213.8976123);"
264 "p3 += dot(p3, p3.yzx+19.19);"
265 "return fract(vec2((p3.x + p3.y)*p3.z, (p3.x+p3.z)*p3.y));"
270 "vec4 diffuse = aColour;"
272 "if( diffuse.a == 0.0 )"
274 "diffuse.a = texture( uTexGlyphs, aTexCoords ).r;"
277 "FragColor = diffuse;"
282 static struct vg_shader _shader_ui_image
=
284 .name
= "[vg] ui_image",
290 "layout (location=0) in vec2 a_co;"
291 "layout (location=1) in vec2 a_uv;"
292 "layout (location=2) in vec4 a_colour;"
295 "out vec2 aTexCoords;"
301 "gl_Position = vec4( uPv * vec3( a_co, 1.0 ), 1.0 );"
302 "aTexCoords = a_uv * 0.0078125;"
303 "aColour = a_colour;"
312 "uniform sampler2D uTexImage;"
313 "out vec4 FragColor;"
315 "in vec2 aTexCoords;"
321 "vec4 colour = texture( uTexImage, aTexCoords );"
322 "FragColor = colour;"
326 #define UI_GLYPH_SPACING_X 8
328 VG_STATIC
void _vg_ui_init(void)
330 if( !vg_shader_compile( &_shader_ui
) ||
331 !vg_shader_compile( &_shader_ui_image
) )
332 vg_fatal_error( "Failed to compile ui shader" );
336 * ----------------------------------------
339 vg_ui
.max_indices
= 20000;
340 vg_ui
.max_verts
= 30000;
342 /* Generate the buffer we are gonna be drawing to */
343 glGenVertexArrays( 1, &vg_ui
.vao
);
344 glGenBuffers( 1, &vg_ui
.vbo
);
345 glGenBuffers( 1, &vg_ui
.ebo
);
347 glBindVertexArray( vg_ui
.vao
);
348 glBindBuffer( GL_ARRAY_BUFFER
, vg_ui
.vbo
);
350 glBufferData( GL_ARRAY_BUFFER
,
351 vg_ui
.max_verts
* sizeof( struct ui_vert
),
352 NULL
, GL_DYNAMIC_DRAW
);
353 glBindVertexArray( vg_ui
.vao
);
355 glBindBuffer( GL_ELEMENT_ARRAY_BUFFER
, vg_ui
.ebo
);
356 glBufferData( GL_ELEMENT_ARRAY_BUFFER
,
357 vg_ui
.max_indices
* sizeof( u16
), NULL
, GL_DYNAMIC_DRAW
);
362 u32
const stride
= sizeof( struct ui_vert
);
365 glVertexAttribPointer( 0, 2, GL_SHORT
, GL_FALSE
, stride
,
366 (void *)offsetof( struct ui_vert
, co
) );
367 glEnableVertexAttribArray( 0 );
370 glVertexAttribPointer( 1, 2, GL_UNSIGNED_BYTE
, GL_FALSE
, stride
,
371 (void *)offsetof( struct ui_vert
, uv
) );
372 glEnableVertexAttribArray( 1 );
375 glVertexAttribPointer( 2, 4, GL_UNSIGNED_BYTE
, GL_TRUE
, stride
,
376 (void *)offsetof( struct ui_vert
, colour
) );
377 glEnableVertexAttribArray( 2 );
381 /* Alloc RAM default context */
382 u32 vert_size
= vg_ui
.max_verts
*sizeof(struct ui_vert
),
383 inds_size
= vg_align8( vg_ui
.max_indices
*sizeof(u16
) );
385 vg_ui
.vertex_buffer
= vg_linear_alloc( vg_mem
.rtmemory
, vert_size
);
386 vg_ui
.indice_buffer
= vg_linear_alloc( vg_mem
.rtmemory
, inds_size
);
389 * -----------------------------------------------------
392 /* Load default font */
394 #include "vg/vg_pxfont_thin.h"
397 u32 pixels
= 0, total
= 256*256, data
= 0;
400 while( pixels
< total
){
401 for( int b
= 31; b
>= 0; b
-- ){
402 image
[ pixels
++ ] = (compressed
[data
] & (0x1u
<< b
))? 0xffu
: 0x00u
;
404 if( pixels
>= total
){
412 glGenTextures( 1, &vg_ui
.tex_glyphs
);
413 glBindTexture( GL_TEXTURE_2D
, vg_ui
.tex_glyphs
);
414 glTexImage2D( GL_TEXTURE_2D
, 0, GL_R8
, 256, 256, 0,
415 GL_RED
, GL_UNSIGNED_BYTE
, image
);
418 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_WRAP_S
, GL_CLAMP_TO_EDGE
);
419 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_WRAP_T
, GL_CLAMP_TO_EDGE
);
420 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_MIN_FILTER
, GL_NEAREST
);
421 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_MAG_FILTER
, GL_NEAREST
);
425 * ---------------------------------------------------------------
428 vg_ui
.cursor_map
[ k_ui_cursor_default
] =
429 SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_ARROW
);
430 vg_ui
.cursor_map
[ k_ui_cursor_hand
] =
431 SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_HAND
);
432 vg_ui
.cursor_map
[ k_ui_cursor_ibeam
] =
433 SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_IBEAM
);
441 static void rect_copy( ui_rect a
, ui_rect b
)
443 for( int i
=0; i
<4; i
++ )
447 VG_STATIC
void ui_flush( enum ui_shader shader
)
449 u32 vertex_offset
= vg_ui
.vert_start
*sizeof(ui_vert
),
450 vertex_count
= vg_ui
.cur_vert
-vg_ui
.vert_start
,
451 vertex_size
= vertex_count
*sizeof(ui_vert
),
453 indice_offset
= vg_ui
.indice_start
*sizeof(u16
),
454 indice_count
= vg_ui
.cur_indice
-vg_ui
.indice_start
,
455 indice_size
= indice_count
* sizeof(u16
);
457 if( !vertex_size
|| !indice_size
)
460 glBindVertexArray( vg_ui
.vao
);
461 glBindBuffer( GL_ARRAY_BUFFER
, vg_ui
.vbo
);
462 glBufferSubData( GL_ARRAY_BUFFER
, vertex_offset
, vertex_size
,
463 vg_ui
.vertex_buffer
+vg_ui
.vert_start
);
465 glBindBuffer( GL_ELEMENT_ARRAY_BUFFER
, vg_ui
.ebo
);
466 glBufferSubData( GL_ELEMENT_ARRAY_BUFFER
, indice_offset
, indice_size
,
467 vg_ui
.indice_buffer
+vg_ui
.indice_start
);
469 glDisable( GL_DEPTH_TEST
);
470 glEnable( GL_BLEND
);
471 glBlendFunc( GL_SRC_ALPHA
, GL_ONE_MINUS_SRC_ALPHA
);
472 glBlendEquation( GL_FUNC_ADD
);
473 glDisable( GL_CULL_FACE
);
475 m3x3f view
= M3X3_IDENTITY
;
476 m3x3_translate( view
, (v3f
){ -1.0f
, 1.0f
, 0.0f
} );
477 m3x3_scale( view
, (v3f
){ 1.0f
/((float)vg
.window_x
*0.5f
),
478 -1.0f
/((float)vg
.window_y
*0.5f
), 1.0f
} );
480 if( shader
== k_ui_shader_colour
){
481 glUseProgram( _shader_ui
.id
);
483 glUniformMatrix3fv( glGetUniformLocation( _shader_ui
.id
, "uPv" ), 1,
484 GL_FALSE
, (float *)view
);
486 glActiveTexture( GL_TEXTURE0
);
487 glBindTexture( GL_TEXTURE_2D
, vg_ui
.tex_glyphs
);
488 glUniform1i( glGetUniformLocation( _shader_ui
.id
, "uTexGlyphs" ), 0 );
490 else if( shader
== k_ui_shader_image
){
491 glUseProgram( _shader_ui_image
.id
);
492 glUniformMatrix3fv( glGetUniformLocation( _shader_ui_image
.id
, "uPv" ), 1,
493 GL_FALSE
, (float *)view
);
494 glUniform1i( glGetUniformLocation(_shader_ui_image
.id
,"uTexImage"), 0 );
497 vg_fatal_error( "Invalid UI shader (%d)\n", shader
);
499 glDrawElements( GL_TRIANGLES
, indice_count
, GL_UNSIGNED_SHORT
,
500 (void *)(vg_ui
.indice_start
*sizeof(u16
)) );
502 glDisable( GL_BLEND
);
504 vg_ui
.indice_start
= vg_ui
.cur_indice
;
505 vg_ui
.vert_start
= vg_ui
.cur_vert
;
508 static void ui_fill_rect( ui_rect rect
, u32 colour
, ui_px uv
[4] )
510 /* this if far from ideal but stops us from crashing */
511 if( (vg_ui
.cur_vert
+ 4 > vg_ui
.max_verts
) ||
512 (vg_ui
.cur_indice
+ 6 > vg_ui
.max_indices
))
515 struct ui_vert
*vertices
= &vg_ui
.vertex_buffer
[ vg_ui
.cur_vert
];
516 u16
*indices
= &vg_ui
.indice_buffer
[ vg_ui
.cur_indice
];
518 for( int i
=0; i
<4; i
++ ){
519 vertices
[i
].colour
= colour
;
522 vertices
[0].co
[0] = rect
[0];
523 vertices
[0].co
[1] = rect
[1];
524 vertices
[0].uv
[0] = uv
[0];
525 vertices
[0].uv
[1] = uv
[1];
526 vertices
[1].co
[0] = rect
[0]+rect
[2];
527 vertices
[1].co
[1] = rect
[1];
528 vertices
[1].uv
[0] = uv
[2];
529 vertices
[1].uv
[1] = uv
[1];
530 vertices
[2].co
[0] = rect
[0]+rect
[2];
531 vertices
[2].co
[1] = rect
[1]+rect
[3];
532 vertices
[2].uv
[0] = uv
[2];
533 vertices
[2].uv
[1] = uv
[3];
534 vertices
[3].co
[0] = rect
[0];
535 vertices
[3].co
[1] = rect
[1]+rect
[3];
536 vertices
[3].uv
[0] = uv
[0];
537 vertices
[3].uv
[1] = uv
[3];
538 u16 ind_start
= vg_ui
.cur_vert
;
540 u16 start
= vg_ui
.cur_vert
;
541 u32 mesh
[] = { 0,2,1, 0,3,2 };
543 for( u32 i
=0; i
<vg_list_size(mesh
); i
++ ){
544 indices
[i
] = start
+mesh
[i
];
547 vg_ui
.cur_indice
+= 6;
551 static void ui_fill( ui_rect rect
, u32 colour
)
553 ui_fill_rect( rect
, colour
, (ui_px
[4]){ 4,4,4,4 } );
556 static void ui_outline( ui_rect rect
, ui_px thickness
, u32 colour
)
558 /* this if far from ideal but stops us from crashing */
559 if( (vg_ui
.cur_vert
+ 8 > vg_ui
.max_verts
) ||
560 (vg_ui
.cur_indice
+ 24 > vg_ui
.max_indices
))
563 struct ui_vert
*vertices
= &vg_ui
.vertex_buffer
[ vg_ui
.cur_vert
];
564 u16
*indices
= &vg_ui
.indice_buffer
[ vg_ui
.cur_indice
];
566 for( int i
=0; i
<8; i
++ ){
567 vertices
[i
].uv
[0] = 4;
568 vertices
[i
].uv
[1] = 4;
569 vertices
[i
].colour
= colour
;
572 vertices
[0].co
[0] = rect
[0];
573 vertices
[0].co
[1] = rect
[1];
574 vertices
[1].co
[0] = rect
[0]+rect
[2];
575 vertices
[1].co
[1] = rect
[1];
576 vertices
[2].co
[0] = rect
[0]+rect
[2];
577 vertices
[2].co
[1] = rect
[1]+rect
[3];
578 vertices
[3].co
[0] = rect
[0];
579 vertices
[3].co
[1] = rect
[1]+rect
[3];
580 vertices
[4].co
[0] = vertices
[0].co
[0]-thickness
;
581 vertices
[4].co
[1] = vertices
[0].co
[1]-thickness
;
582 vertices
[5].co
[0] = vertices
[1].co
[0]+thickness
;
583 vertices
[5].co
[1] = vertices
[1].co
[1]-thickness
;
584 vertices
[6].co
[0] = vertices
[2].co
[0]+thickness
;
585 vertices
[6].co
[1] = vertices
[2].co
[1]+thickness
;
586 vertices
[7].co
[0] = vertices
[3].co
[0]-thickness
;
587 vertices
[7].co
[1] = vertices
[3].co
[1]+thickness
;
589 u16 start
= vg_ui
.cur_vert
;
590 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 };
592 for( u32 i
=0; i
<vg_list_size(mesh
); i
++ ){
593 indices
[i
] = start
+mesh
[i
];
596 vg_ui
.cur_indice
+= 24;
600 static void ui_split( ui_rect rect
,
601 enum ui_axis other
, ui_px width
, ui_px gap
,
602 ui_rect l
, ui_rect r
)
604 enum ui_axis dir
= other
^ 0x1;
606 if( width
< 0 ) width
= rect
[ 2+dir
] + width
;
609 rect_copy( rect
, temp
);
611 l
[ dir
] = temp
[ dir
];
612 r
[ dir
] = temp
[ dir
] + width
+ (gap
/2);
613 l
[ other
] = temp
[ other
];
614 r
[ other
] = temp
[ other
];
615 l
[ 2+dir
] = width
- (gap
/2);
616 r
[ 2+dir
] = temp
[ 2+dir
] - width
- (gap
/2);
617 l
[ 2+other
] = temp
[ 2+other
];
618 r
[ 2+other
] = temp
[ 2+other
];
621 static ui_px
ui_text_line_width( const char *str
);
623 static void ui_rect_center( ui_rect parent
, ui_rect rect
)
625 rect
[0] = parent
[0] + (parent
[2]-rect
[2])/2;
626 rect
[1] = parent
[1] + (parent
[3]-rect
[3])/2;
629 static void ui_fit_item( ui_rect rect
, ui_px size
[2], ui_rect d
)
631 i32 rp
= (i32
)rect
[2] * (i32
)size
[1],
632 rc
= (i32
)size
[0] * (i32
)rect
[3];
634 enum ui_axis dir
, other
;
635 if( rc
> rp
) dir
= k_ui_axis_h
;
636 else dir
= k_ui_axis_v
;
639 d
[2+dir
] = rect
[2+dir
];
640 d
[2+other
] = (rect
[2+dir
] * size
[other
]) / size
[dir
];
642 ui_rect_center( rect
, d
);
645 static void ui_split_ratio( ui_rect rect
, enum ui_axis dir
, float ratio
,
646 ui_px gap
, ui_rect l
, ui_rect r
)
648 ui_px width
= (float)rect
[ 2+(dir
^0x1) ] * ratio
;
649 ui_split( rect
, dir
, width
, gap
, l
, r
);
652 static void ui_rect_pad( ui_rect rect
, ui_px pad
[2] )
660 static ui_px
ui_text_line_width( const char *str
)
663 const char *_c
= str
;
666 while( (c
= *(_c
++)) ){
667 if( c
>= 32 ) length
++;
668 else if( c
== '\n' ) break;
674 static ui_px
ui_text_string_height( const char *str
)
677 const char *_c
= str
;
680 while( (c
= *(_c
++)) ){
681 if( c
== '\n' ) height
++;
687 static ui_px
ui_text_aligned_x( const char *str
, ui_rect rect
, ui_px scale
,
688 enum ui_align align
)
690 enum ui_align lwr
= k_ui_align_lwr
& align
;
691 if( lwr
== k_ui_align_left
){
695 ui_px width
= ui_text_line_width( str
) * scale
;
697 if( lwr
== k_ui_align_right
)
698 return rect
[0] + rect
[2]-width
;
700 return rect
[0] + (rect
[2]-width
)/2;
704 static ui_px
ui_min( ui_px a
, ui_px b
){ return a
<b
?a
:b
; }
705 static ui_px
ui_max( ui_px a
, ui_px b
){ return a
>b
?a
:b
; }
706 static ui_px
ui_clamp( ui_px a
, ui_px min
, ui_px max
)
708 return ui_min( max
, ui_max( a
, min
) );
711 static int ui_clip( ui_rect parent
, ui_rect child
, ui_rect clipped
)
713 ui_px parent_max
[2], child_max
[2];
714 parent_max
[0] = parent
[0]+parent
[2];
715 parent_max
[1] = parent
[1]+parent
[3];
716 child_max
[0] = child
[0]+child
[2];
717 child_max
[1] = child
[1]+child
[3];
719 clipped
[0] = ui_clamp( child
[0], parent
[0], parent_max
[0] );
720 clipped
[1] = ui_clamp( child
[1], parent
[1], parent_max
[1] );
721 clipped
[2] = ui_clamp( child_max
[0], parent
[0], parent_max
[0] );
722 clipped
[3] = ui_clamp( child_max
[1], parent
[1], parent_max
[1] );
724 if( clipped
[0] == clipped
[2] ||
725 clipped
[1] == clipped
[3] )
728 clipped
[2] -= clipped
[0];
729 clipped
[3] -= clipped
[1];
734 static int ui_inside_rect( ui_rect rect
, ui_px co
[2] )
736 if( co
[0] >= rect
[0] &&
738 co
[0] < rect
[0]+rect
[2] &&
739 co
[1] < rect
[1]+rect
[3] )
747 static int ui_click_down( u32 mask
)
749 if( vg_ui
.ignore_input_frames
) return 0;
750 if( (vg_ui
.mouse_state
[0] & mask
) &&
751 !(vg_ui
.mouse_state
[1] & mask
) )
757 static int ui_clicking( u32 mask
)
759 if( vg_ui
.ignore_input_frames
) return 0;
760 return vg_ui
.mouse_state
[0] & mask
;
763 static int ui_click_up( u32 mask
)
765 if( vg_ui
.ignore_input_frames
) return 0;
766 if( (vg_ui
.mouse_state
[1] & mask
) &&
767 !(vg_ui
.mouse_state
[0] & mask
) )
773 static void ui_prerender(void)
776 vg_ui
.mouse_state
[1] = vg_ui
.mouse_state
[0];
777 vg_ui
.mouse_state
[0] = SDL_GetMouseState( &x
, &y
);
782 vg_ui
.cur_indice
= 0;
783 vg_ui
.vert_start
= 0;
784 vg_ui
.indice_start
= 0;
785 vg_ui
.focused_control_hit
= 0;
786 vg_ui
.cursor
= k_ui_cursor_default
;
787 vg_ui
.wants_mouse
= 0;
789 if( vg_ui
.ignore_input_frames
){
790 vg_ui
.ignore_input_frames
--;
794 if( ui_click_down(UI_MOUSE_LEFT
)||ui_click_down(UI_MOUSE_MIDDLE
) ){
795 vg_ui
.mouse_click
[0] = vg_ui
.mouse
[0];
796 vg_ui
.mouse_click
[1] = vg_ui
.mouse
[1];
800 static u32
ui_colour( enum ui_scheme_colour id
)
802 return vg_ui
.scheme
[ id
];
805 /* get an appropriately contrasting colour given the base */
806 static u32
ui_colourcont( enum ui_scheme_colour id
)
808 if ( id
< k_ui_bg
+6 ) return ui_colour( k_ui_fg
);
809 else if( id
< k_ui_fg
) return ui_colour( k_ui_bg
+1 );
810 else if( id
< k_ui_hue
) return ui_colour( k_ui_bg
+3 );
811 else if( id
< k_ui_red
+k_ui_brighter
) return ui_colour( k_ui_fg
);
812 else return ui_colour( k_ui_fg
+1 );
815 static void ui_hex_to_norm( u32 hex
, v4f norm
)
817 norm
[0] = ((hex
) & 0xff);
818 norm
[1] = ((hex
>>8 ) & 0xff);
819 norm
[2] = ((hex
>>16) & 0xff);
820 norm
[3] = ((hex
>>24) & 0xff);
821 v4_muls( norm
, 1.0f
/255.0f
, norm
);
824 static u32
ui_ntext( ui_rect rect
, const char *str
, u32 len
, ui_px scale
,
825 enum ui_align align
, u32 colour
)
828 if( colour
== 0 ) colour
= ui_colour( k_ui_fg
);
830 colour
&= 0x00ffffff;
832 const char *_c
= str
;
835 text_cursor
[0] = ui_text_aligned_x( str
, rect
, scale
, align
);
836 text_cursor
[1] = rect
[1];
837 text_cursor
[2] = 8*scale
;
838 text_cursor
[3] = 14*scale
;
840 u32 printed_chars
= 0;
842 if( align
& (k_ui_align_middle
|k_ui_align_bottom
) ){
843 ui_px height
= ui_text_string_height( str
) * scale
;
845 if( align
& k_ui_align_bottom
)
846 text_cursor
[1] += rect
[3]-height
;
848 text_cursor
[1] += (rect
[3]-height
)/2;
851 while( (c
= *(_c
++)) ){
852 if( printed_chars
>= len
){
854 text_cursor
[1] += 14*scale
;
855 text_cursor
[0] = ui_text_aligned_x( _c
, rect
, scale
, align
);
856 text_cursor
[0] -= UI_GLYPH_SPACING_X
*scale
;
859 u8 glyph_index
= '\xb6';
860 glyph_base
[0] = glyph_index
& 0xf;
861 glyph_base
[1] = (glyph_index
-glyph_base
[0])>>4;
865 ui_fill_rect( text_cursor
, 0x00ffffff, (ui_px
[4])
873 text_cursor
[0] += UI_GLYPH_SPACING_X
*scale
;
877 text_cursor
[1] += 14*scale
;
878 text_cursor
[0] = ui_text_aligned_x( _c
, rect
, scale
, align
);
885 glyph_base
[0] = glyph_index
& 0xf;
886 glyph_base
[1] = (glyph_index
-glyph_base
[0])>>4;
892 if( ui_clip( rect
, text_cursor
, rect_char
) ){
893 ui_fill_rect( rect_char
, colour
, (ui_px
[4])
902 else if( c
== '\x1B' ){
906 for( int i
=0; i
<3; i
++ ){
912 case '0': colour
= ui_colour( k_ui_fg
); break;
913 case '3'|'0'<<8: colour
= ui_colour( k_ui_bg
); break;
914 case '3'|'1'<<8: colour
= ui_colour( k_ui_red
); break;
915 case '3'|'2'<<8: colour
= ui_colour( k_ui_green
); break;
916 case '3'|'3'<<8: colour
= ui_colour( k_ui_yellow
); break;
917 case '3'|'4'<<8: colour
= ui_colour( k_ui_blue
); break;
918 case '3'|'5'<<8: colour
= ui_colour( k_ui_purple
); break;
919 case '3'|'6'<<8: colour
= ui_colour( k_ui_aqua
); break;
920 case '3'|'7'<<8: colour
= 0xffffffff; break;
923 colour
&= 0x00ffffff;
927 colour_id
|= _c
[i
] << (i
*8);
937 else if( c
== '\t' ){
938 text_cursor
[0] += UI_GLYPH_SPACING_X
*scale
*4;
943 text_cursor
[0] += UI_GLYPH_SPACING_X
*scale
;
947 return printed_chars
;
950 static void ui_text( ui_rect rect
, const char *str
, ui_px scale
,
951 enum ui_align align
, u32 colour
)
953 ui_ntext( rect
, str
, 1024, scale
, align
, colour
);
956 static void ui_image( ui_rect rect
, GLuint image
)
958 ui_flush( k_ui_shader_colour
);
959 glActiveTexture( GL_TEXTURE0
);
960 glBindTexture( GL_TEXTURE_2D
, image
);
961 ui_fill_rect( rect
, 0xffffffff, (ui_px
[4]){ 0,128, 128, 0 } );
962 ui_flush( k_ui_shader_image
);
965 static u32
v4f_u32_colour( v4f colour
)
967 u32 r
= colour
[0] * 255.0f
,
968 g
= colour
[1] * 255.0f
,
969 b
= colour
[2] * 255.0f
,
970 a
= colour
[3] * 255.0f
;
972 return r
| (g
<<8) | (b
<<16) | (a
<<24);
975 static void ui_defocus_all(void)
977 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
981 vg_ui
.focused_control_id
= NULL
;
982 vg_ui
.focused_control_hit
= 0;
983 vg_ui
.focused_control_type
= k_ui_control_none
;
986 enum ui_button_state
{
987 k_ui_button_none
= 0,
988 k_ui_button_click
= 1,
989 k_ui_button_holding_inside
= 2,
990 k_ui_button_holding_outside
= 3,
991 k_ui_button_hover
= 4
994 static enum ui_button_state
ui_colourbutton( ui_rect rect
,
995 enum ui_scheme_colour colour
){
996 int clickup
= ui_click_up(UI_MOUSE_LEFT
),
997 click
= ui_clicking(UI_MOUSE_LEFT
) | clickup
,
998 target
= ui_inside_rect( rect
, vg_ui
.mouse_click
) && click
,
999 hover
= ui_inside_rect( rect
, vg_ui
.mouse
);
1001 u32 col_base
= vg_ui
.scheme
[ colour
],
1002 col_highlight
= vg_ui
.scheme
[ k_ui_fg
],
1003 col_hover
= vg_ui
.scheme
[ colour
+ k_ui_brighter
];
1005 if( vg_ui
.focused_control_type
!= k_ui_control_none
){
1013 vg_ui
.cursor
= k_ui_cursor_hand
;
1020 ui_fill( rect
, col_highlight
);
1021 vg_ui
.ignore_input_frames
= 2;
1022 rect_copy( rect
, vg_ui
.click_fader
);
1024 rect_copy( rect
, vg_ui
.click_fader_end
);
1025 vg_ui
.click_fader_end
[3] = 0;
1026 ui_rect_center( rect
, vg_ui
.click_fader_end
);
1028 vg_ui
.click_fade_opacity
= 1.0f
;
1030 return k_ui_button_click
;
1033 ui_fill( rect
, col_highlight
);
1034 return k_ui_button_holding_inside
;
1038 ui_fill( rect
, col_base
);
1039 ui_outline( rect
, 1, col_highlight
);
1040 return k_ui_button_holding_outside
;
1044 ui_fill( rect
, col_base
);
1045 return k_ui_button_none
;
1050 ui_fill( rect
, col_hover
);
1051 return k_ui_button_hover
;
1054 ui_fill( rect
, col_base
);
1055 return k_ui_button_none
;
1060 static enum ui_button_state
ui_colourbutton_text(
1061 ui_rect rect
, const char *string
, ui_px scale
,
1062 enum ui_scheme_colour colour
){
1063 enum ui_button_state state
= ui_colourbutton( rect
, colour
);
1064 ui_rect t
= { 0,0, ui_text_line_width( string
)*scale
, 14*scale
};
1065 ui_rect_center( rect
, t
);
1067 u32 text_colour
= ui_colourcont(colour
);
1068 if( state
== k_ui_button_holding_inside
)
1069 text_colour
= colour
;
1071 ui_text( t
, string
, scale
, k_ui_align_left
, text_colour
);
1075 static enum ui_button_state
ui_button_text( ui_rect rect
,
1076 const char *string
, ui_px scale
){
1077 return ui_colourbutton_text( rect
, string
, scale
, k_ui_bg
+4 );
1080 static void ui_enum_post(void);
1081 static void ui_postrender(void)
1083 if( vg_ui
.click_fade_opacity
> 0.0f
){
1084 float scale
= vg_ui
.click_fade_opacity
;
1085 scale
= vg_maxf( 1.0f
/255.0f
, scale
*scale
);
1087 vg_ui
.click_fade_opacity
-= vg
.time_frame_delta
* 3.8f
;
1088 u32 colour
= (0x00ffffff & ui_colour(k_ui_fg
))|0x7f000000;
1090 v4f begin
, end
, dest
;
1091 for( int i
=0; i
<4; i
++ ){
1092 begin
[i
] = vg_ui
.click_fader
[i
];
1093 end
[i
] = vg_ui
.click_fader_end
[i
]+1;
1096 v4_lerp( end
, begin
, scale
, dest
);
1099 for( int i
=0; i
<4; i
++ ){
1103 ui_fill( rect
, colour
);
1106 if( vg_ui
.focused_control_type
== k_ui_control_enum
){
1109 else if( vg_ui
.focused_control_type
== k_ui_control_modal
){
1110 ui_rect screen
= {0,0,vg
.window_x
,vg
.window_y
};
1111 ui_fill( screen
, 0xa0000000 );
1112 ui_rect box
= {0,0,400,200};
1114 u32 colour
= ui_colour(k_ui_fg
),
1115 type
= vg_ui
.modal
.options
& UI_MODAL_TYPE_BITS
;
1116 if ( type
== 1 ) colour
= ui_colour(k_ui_green
);
1117 else if( type
== 2 ) colour
= ui_colour(k_ui_red
);
1118 else if( type
== 3 ) colour
= ui_colour(k_ui_yellow
);
1120 ui_rect_center( screen
, box
);
1121 ui_fill( box
, ui_colour(k_ui_bg
) );
1122 ui_outline( box
, -1, colour
);
1125 rect_copy( box
, message
);
1127 ui_rect_center( box
, message
);
1129 ui_rect row0
, row1
, btn
;
1130 ui_split_ratio( message
, k_ui_axis_h
, 0.5f
, 0, row0
, row1
);
1131 row0
[0] += UI_GLYPH_SPACING_X
;
1132 ui_ntext( row0
, vg_ui
.modal
.message
, (box
[2]/UI_GLYPH_SPACING_X
)-2, 1,
1133 k_ui_align_left
, colour
);
1135 rect_copy( row1
, btn
);
1138 ui_rect_center( row1
, btn
);
1140 vg_ui
.focused_control_type
= k_ui_control_none
; /* HACK */
1141 if( ui_button_text( btn
, "OK", 1 ) != 1 )
1142 vg_ui
.focused_control_hit
= 1;
1143 vg_ui
.focused_control_type
= k_ui_control_modal
; /* HACK */
1144 vg_ui
.wants_mouse
= 1;
1147 ui_flush( k_ui_shader_colour
);
1149 if( !vg_ui
.focused_control_hit
){
1153 if( vg_ui
.wants_mouse
){
1154 SDL_SetWindowGrab( vg
.window
, SDL_FALSE
);
1155 SDL_SetRelativeMouseMode( SDL_FALSE
);
1158 SDL_SetWindowGrab( vg
.window
, SDL_TRUE
);
1159 SDL_SetRelativeMouseMode( SDL_TRUE
);
1162 SDL_SetCursor( vg_ui
.cursor_map
[ vg_ui
.cursor
] );
1166 static void ui_dev_colourview(void)
1168 ui_rect window
= {vg
.window_x
-256,0,256,vg
.window_y
}, swatch
;
1170 const char *names
[vg_list_size(vg_ui
.scheme
)] = {
1171 [k_ui_bg
] = "k_ui_bg", "k_ui_bg+1", "k_ui_bg+2", "k_ui_bg+3",
1172 "k_ui_bg+4", "k_ui_bg+5", "k_ui_bg+6", "k_ui_bg+7",
1174 [k_ui_fg
] = "k_ui_fg", "k_ui_fg+1", "k_ui_fg+2", "k_ui_fg+3",
1175 "k_ui_fg+4", "k_ui_fg+5", "k_ui_fg+6", "k_ui_fg+7",
1177 [k_ui_red
] = "k_ui_red", "k_ui_orange", "k_ui_yellow", "k_ui_green",
1178 "k_ui_aqua", "k_ui_blue", "k_ui_purple", "k_ui_gray",
1179 "k_ui_red+8","k_ui_orange+8","k_ui_yellow+8","k_ui_green+8",
1180 "k_ui_aqua+8","k_ui_blue+8","k_ui_purple+8","k_ui_gray+8" };
1183 ui_split_ratio( window
, k_ui_axis_v
, 0.5f
, 0, col
[0], col
[1] );
1185 for( int i
=0; i
<vg_list_size(vg_ui
.scheme
); i
++ ){
1186 int which
= (i
/8)%2;
1188 ui_split( col
[which
], k_ui_axis_h
, 24, 0, swatch
, col
[which
] );
1189 ui_fill( swatch
, ui_colour(i
) );
1192 ui_text(swatch
, names
[i
], 1, k_ui_align_middle_left
, ui_colourcont(i
));
1196 static void ui_standard_widget( ui_rect inout_panel
, ui_rect out_rect
){
1197 ui_split( inout_panel
, k_ui_axis_h
, k_ui_widget_height
*k_ui_scale
,
1198 k_ui_padding
, out_rect
, inout_panel
);
1203 * -----------------------------------------------------------------------------
1206 static int ui_checkbox( ui_rect inout_panel
, const char *str_label
, i32
*data
){
1207 ui_rect rect
, label
, box
;
1208 ui_standard_widget( inout_panel
, rect
);
1210 ui_split( rect
, k_ui_axis_v
, -rect
[3], 0, label
, box
);
1211 ui_text( label
, str_label
, k_ui_scale
, k_ui_align_middle_left
, 0 );
1213 int changed
= ui_colourbutton( box
, k_ui_bg
)==1;
1215 *data
= (*data
) ^ 0x1;
1218 ui_rect_pad( box
, (ui_px
[2]){4,4} );
1219 ui_fill( box
, ui_colour( k_ui_orange
) );
1227 * -----------------------------------------------------------------------------
1231 * unfortunately no return value since we only find out that event in the
1234 static void ui_enum( ui_rect inout_panel
, const char *str_label
,
1235 struct ui_enum_opt
*options
, u32 len
, i32
*value
)
1237 ui_rect rect
, label
, box
;
1238 ui_standard_widget( inout_panel
, rect
);
1239 ui_split( rect
, k_ui_axis_v
, (ui_text_line_width( str_label
)+8)*k_ui_scale
,
1241 ui_text( label
, str_label
, k_ui_scale
, k_ui_align_middle_left
, 0 );
1243 const char *display
= "OUT OF RANGE";
1244 for( u32 i
=0; i
<len
; i
++ ){
1245 if( *value
== options
[i
].value
){
1246 display
= options
[i
].alias
;
1251 if( ui_button_text( box
, display
, k_ui_scale
) == 1 ){
1252 vg_ui
.focused_control_type
= k_ui_control_enum
;
1253 vg_ui
.ptr_enum
= value
;
1254 vg_ui
._enum
.option_count
= len
;
1255 vg_ui
._enum
.options
= options
;
1256 rect_copy( box
, vg_ui
._enum
.rect
);
1260 static void ui_enum_post(void){
1262 rect_copy( vg_ui
._enum
.rect
, drawer
);
1263 drawer
[3] *= vg_ui
._enum
.option_count
;
1266 int clickany
= ui_click_up(UI_MOUSE_LEFT
|UI_MOUSE_RIGHT
|UI_MOUSE_MIDDLE
),
1267 hover
= ui_inside_rect( drawer
, vg_ui
.mouse
);
1269 if( clickany
&& !hover
){
1274 vg_ui
.focused_control_type
= k_ui_control_none
;
1275 i32
*value
= vg_ui
.ptr_enum
;
1277 for( u32 i
=0; i
<vg_ui
._enum
.option_count
; i
++ ){
1279 ui_split( drawer
, k_ui_axis_h
, vg_ui
._enum
.rect
[3], 0, button
,drawer
);
1281 enum ui_scheme_colour colour
= k_ui_bg
+3;
1282 if( vg_ui
._enum
.options
[i
].value
== *value
)
1283 colour
= k_ui_orange
;
1285 if( ui_colourbutton_text( button
, vg_ui
._enum
.options
[i
].alias
,
1286 k_ui_scale
, colour
) == 1 ){
1287 *value
= vg_ui
._enum
.options
[i
].value
;
1293 vg_ui
.focused_control_type
= k_ui_control_enum
;
1296 vg_ui
.focused_control_hit
= 1;
1301 * -----------------------------------------------------------------------------
1304 static void _ui_textbox_make_selection( int *start
, int *end
)
1306 *start
= VG_MIN( vg_ui
.textbox
.cursor_pos
, vg_ui
.textbox
.cursor_user
);
1307 *end
= VG_MAX( vg_ui
.textbox
.cursor_pos
, vg_ui
.textbox
.cursor_user
);
1310 static void _ui_textbox_move_cursor( int *cursor0
, int *cursor1
,
1311 int dir
, int snap_together
)
1313 *cursor0
= VG_MAX( 0, vg_ui
.textbox
.cursor_user
+ dir
);
1316 VG_MIN( vg_ui
.textbox
.len
-1, strlen( vg_ui
.textbuf
)),
1320 *cursor1
= *cursor0
;
1323 static int _ui_textbox_makeroom( int datastart
, int length
)
1325 int move_to
= VG_MIN( datastart
+length
, vg_ui
.textbox
.len
-1 );
1326 int move_amount
= strlen( vg_ui
.textbuf
)-datastart
;
1327 int move_end
= VG_MIN( move_to
+move_amount
, vg_ui
.textbox
.len
-1 );
1328 move_amount
= move_end
-move_to
;
1331 memmove( &vg_ui
.textbuf
[ move_to
],
1332 &vg_ui
.textbuf
[ datastart
],
1335 vg_ui
.textbuf
[ move_end
] = '\0';
1337 return VG_MIN( length
, vg_ui
.textbox
.len
-datastart
-1 );
1340 static int _ui_textbox_delete_char( int direction
)
1343 _ui_textbox_make_selection( &start
, &end
);
1345 /* There is no selection */
1347 if( direction
== 1 ) end
= VG_MIN( end
+1, strlen( vg_ui
.textbuf
) );
1348 else if( direction
== -1 ) start
= VG_MAX( start
-1, 0 );
1351 /* Still no selction, no need to do anything */
1355 /* Copy the end->terminator to start */
1356 int remaining_length
= strlen( vg_ui
.textbuf
)+1-end
;
1357 memmove( &vg_ui
.textbuf
[ start
],
1358 &vg_ui
.textbuf
[ end
],
1363 static void _ui_textbox_to_clipboard(void)
1366 _ui_textbox_make_selection( &start
, &end
);
1370 memcpy( buffer
, &vg_ui
.textbuf
[ start
], end
-start
);
1371 buffer
[ end
-start
] = 0x00;
1372 SDL_SetClipboardText( buffer
);
1376 static void _ui_textbox_clipboard_paste(void)
1378 if( !SDL_HasClipboardText() )
1381 char *text
= SDL_GetClipboardText();
1386 int datastart
= _ui_textbox_delete_char( 0 );
1387 int length
= strlen( text
);
1388 int cpylength
= _ui_textbox_makeroom( datastart
, length
);
1390 memcpy( vg_ui
.textbuf
+ datastart
, text
, cpylength
);
1391 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1392 &vg_ui
.textbox
.cursor_pos
, cpylength
, 1 );
1396 static void _ui_textbox_put_char( char c
)
1398 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char(0);
1400 if( _ui_textbox_makeroom( vg_ui
.textbox
.cursor_user
, 1 ) )
1401 vg_ui
.textbuf
[ vg_ui
.textbox
.cursor_user
] = c
;
1403 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1404 &vg_ui
.textbox
.cursor_pos
, 1, 1 );
1407 /* Receed secondary cursor */
1408 static void _ui_textbox_left_select(void)
1410 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, -1, 0 );
1413 /* Match and receed both cursors */
1414 static void _ui_textbox_left(void)
1416 int cursor_diff
= vg_ui
.textbox
.cursor_pos
- vg_ui
.textbox
.cursor_user
? 0: 1;
1418 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1419 &vg_ui
.textbox
.cursor_pos
, -cursor_diff
, 1 );
1422 static void _ui_textbox_up(void)
1424 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
){
1425 int line_begin
= vg_ui
.textbox
.cursor_user
;
1427 while( line_begin
){
1428 if( vg_ui
.textbuf
[ line_begin
-1 ] == '\n' ){
1436 int line_above_begin
= line_begin
-1;
1438 while( line_above_begin
){
1439 if( vg_ui
.textbuf
[ line_above_begin
-1 ] == '\n' ){
1443 line_above_begin
--;
1446 int offset
= vg_ui
.textbox
.cursor_user
- line_begin
,
1447 line_length_above
= line_begin
- line_above_begin
-1;
1449 offset
= VG_MIN( line_length_above
, offset
);
1451 vg_ui
.textbox
.cursor_user
= line_above_begin
+offset
;
1452 vg_ui
.textbox
.cursor_pos
= line_above_begin
+offset
;
1455 vg_ui
.textbox
.cursor_user
= line_begin
;
1456 vg_ui
.textbox
.cursor_pos
= line_begin
;
1460 if( vg_ui
.textbox
.callbacks
.up
){
1461 vg_ui
.textbox
.callbacks
.up( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1466 static void _ui_textbox_down(void)
1468 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
){
1469 int line_begin
= vg_ui
.textbox
.cursor_user
;
1471 while( line_begin
){
1472 if( vg_ui
.textbuf
[ line_begin
-1 ] == '\n' ){
1479 int line_below_begin
= vg_ui
.textbox
.cursor_user
;
1482 if( vg_ui
.textbuf
[ line_below_begin
] == '\0' ){
1483 vg_ui
.textbox
.cursor_user
= line_below_begin
;
1484 vg_ui
.textbox
.cursor_pos
= line_below_begin
;
1488 if( vg_ui
.textbuf
[ line_below_begin
] == '\n' ){
1489 line_below_begin
++;
1493 line_below_begin
++;
1496 int line_below_end
= line_below_begin
;
1498 if( vg_ui
.textbuf
[ line_below_end
] == '\0' ||
1499 vg_ui
.textbuf
[ line_below_end
] == '\n' ){
1506 int offset
= vg_ui
.textbox
.cursor_user
- line_begin
,
1507 line_length_below
= line_below_end
- line_below_begin
-1;
1509 offset
= VG_MIN( line_length_below
, offset
);
1511 vg_ui
.textbox
.cursor_user
= line_below_begin
+offset
;
1512 vg_ui
.textbox
.cursor_pos
= line_below_begin
+offset
;
1515 if( vg_ui
.textbox
.callbacks
.down
){
1516 vg_ui
.textbox
.callbacks
.down( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1521 static void _ui_textbox_right_select(void)
1523 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, 1, 0 );
1526 static void _ui_textbox_right(void)
1528 int cursor_diff
= vg_ui
.textbox
.cursor_pos
- vg_ui
.textbox
.cursor_user
? 0: 1;
1530 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1531 &vg_ui
.textbox
.cursor_pos
, +cursor_diff
, 1 );
1534 static void _ui_textbox_backspace(void)
1536 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1537 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char( -1 );
1538 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1540 if( vg_ui
.textbox
.callbacks
.change
){
1541 vg_ui
.textbox
.callbacks
.change( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1546 static void _ui_textbox_delete(void)
1548 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1549 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char( 1 );
1550 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1552 if( vg_ui
.textbox
.callbacks
.change
){
1553 vg_ui
.textbox
.callbacks
.change( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1558 static void _ui_textbox_home_select(void)
1560 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, -10000, 0 );
1563 static void _ui_textbox_home(void)
1565 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1566 &vg_ui
.textbox
.cursor_pos
, -10000, 1 );
1569 static void _ui_textbox_end_select(void)
1571 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, 10000, 0 );
1574 static void _ui_textbox_end(void)
1576 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1577 &vg_ui
.textbox
.cursor_pos
,
1578 vg_ui
.textbox
.len
-1, 1 );
1581 static void _ui_textbox_select_all(void)
1583 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, 10000, 0);
1584 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_pos
, NULL
, -10000, 0);
1587 static void _ui_textbox_cut(void)
1589 _ui_textbox_to_clipboard();
1590 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char(0);
1591 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1594 static void _ui_textbox_enter(void)
1596 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1597 if( vg_ui
.textbox
.callbacks
.enter
)
1598 vg_ui
.textbox
.callbacks
.enter( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1600 if( vg_ui
.focused_control_type
!= k_ui_control_textbox
) return;
1602 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
)
1603 _ui_textbox_put_char( '\n' );
1605 if( !(vg_ui
.textbox
.flags
& UI_TEXTBOX_AUTOFOCUS
) )
1612 * based on a visual character coordinate relative to the anchor of the textbox,
1613 * this works out the linear place in the buffer that coordinate maps to
1615 * input coordinates go in co[0], co[1], and the result index is in co[2]
1617 static void _ui_textbox_calc_index_from_grid( int co
[3], int wrap_length
)
1622 while( (c
= vg_ui
.textbuf
[i
[2]]) ){
1623 if( i
[1]==co
[1] && i
[0]>=co
[0] ) break;
1625 if( i
[0] >= wrap_length
){
1630 if( c
>= 32 && c
<= 126 ){
1634 else if( c
== '\n' ){
1637 if( i
[1] > co
[1] ) break;
1651 * based on the index specied in co[2], work out the visual character
1652 * coordinates and store them in co[0], co[1]
1654 static void _ui_textbox_index_calc_coords( int co
[3], int wrap_length
)
1662 while( (c
= vg_ui
.textbuf
[i
++]) ){
1663 if( i
> co
[2] ) break;
1664 if( co
[0] >= wrap_length
){
1668 if( c
>= 32 && c
<= 126 ) co
[0] ++;
1669 else if( c
== '\n' ){
1677 * calculate the number of characters remaining until either:
1678 * - the wrap_length limit is hit
1679 * - end of the line/string
1681 * index must be fully populated with visual X/Y, and linear index
1683 static int _ui_textbox_run_remaining( int index
[3], int wrap_length
)
1685 int i
=0, printed_chars
=0;
1687 while( (c
= vg_ui
.textbuf
[index
[2] + (i
++)]) ){
1688 if( index
[0]+i
>= wrap_length
) break;
1689 if( c
>= 32 && c
<= 126 ) printed_chars
++;
1690 else if( c
== '\n' ) break;
1693 return printed_chars
+1;
1696 static int ui_textbox( ui_rect rect
, char *buf
, u32 len
, u32 flags
,
1697 struct ui_textbox_callbacks
*callbacks
)
1699 int clickup
= ui_click_up(UI_MOUSE_LEFT
),
1700 clickdown
= ui_click_down(UI_MOUSE_LEFT
),
1701 click
= ui_clicking(UI_MOUSE_LEFT
) | clickup
,
1702 target
= ui_inside_rect( rect
, vg_ui
.mouse_click
) && click
,
1703 hover
= ui_inside_rect( rect
, vg_ui
.mouse
);
1705 /* allow instant transitions from textbox->textbox */
1706 if( (vg_ui
.focused_control_type
!= k_ui_control_none
) &&
1707 (vg_ui
.focused_control_type
!= k_ui_control_textbox
) ){
1713 flags
&= ~UI_TEXTBOX_AUTOFOCUS
;
1716 u32 col_base
= ui_colour( k_ui_bg
),
1717 col_highlight
= ui_colour( k_ui_fg
),
1718 col_cursor
= (0x00ffffff & ui_colour(k_ui_fg
))|0x7f000000;
1723 rect_copy( rect
, text_rect
);
1725 if( flags
& UI_TEXTBOX_MULTILINE
) text_rect
[3] = rect
[3]-16;
1726 else text_rect
[3] = 14;
1729 ui_rect_center( rect
, text_rect
);
1731 ui_px wrap_length
= 1024;
1733 if( flags
& UI_TEXTBOX_WRAP
)
1734 wrap_length
= text_rect
[2] / UI_GLYPH_SPACING_X
;
1737 vg_ui
.cursor
= k_ui_cursor_ibeam
;
1740 if( vg_ui
.focused_control_id
== buf
){
1741 ui_fill( rect
, col_base
);
1742 ui_ntext( text_rect
, buf
, wrap_length
, 1, k_ui_align_left
, 0 );
1744 if( !(flags
& UI_TEXTBOX_AUTOFOCUS
) && ((clickup
||clickdown
) && !target
)){
1748 vg_ui
.focused_control_hit
= 1;
1749 if( click
&& target
){
1751 (vg_ui
.mouse_click
[0] - text_rect
[0]) / UI_GLYPH_SPACING_X
,
1752 (vg_ui
.mouse_click
[1] - text_rect
[1]) / 14,
1756 (vg_ui
.mouse
[0] - text_rect
[0]) / UI_GLYPH_SPACING_X
,
1757 (vg_ui
.mouse
[1] - text_rect
[1]) / 14,
1761 if( flags
& UI_TEXTBOX_MULTILINE
){
1762 _ui_textbox_calc_index_from_grid( p0
, wrap_length
);
1763 _ui_textbox_calc_index_from_grid( p1
, wrap_length
);
1765 vg_ui
.textbox
.cursor_pos
= p0
[2];
1766 vg_ui
.textbox
.cursor_user
= p1
[2];
1769 int max
= strlen( buf
);
1770 vg_ui
.textbox
.cursor_pos
= VG_MAX( 0, VG_MIN( max
, p0
[0] )),
1771 vg_ui
.textbox
.cursor_user
= VG_MAX( 0, VG_MIN( max
, p1
[0] ));
1775 ui_outline( rect
, -2, vg_ui
.scheme
[ k_ui_orange
] );
1779 int c0
= vg_ui
.textbox
.cursor_pos
,
1780 c1
= vg_ui
.textbox
.cursor_user
,
1781 start
= VG_MIN( c0
, c1
),
1782 end
= VG_MAX( c0
, c1
),
1785 if( flags
& (UI_TEXTBOX_MULTILINE
|UI_TEXTBOX_WRAP
) ){
1787 int pos
[3], remaining
= chars
;
1790 _ui_textbox_index_calc_coords( pos
, wrap_length
);
1793 cursor
[0] = text_rect
[0] + pos
[0]*UI_GLYPH_SPACING_X
-1;
1794 cursor
[1] = text_rect
[1] + pos
[1]*14;
1797 ui_fill( cursor
, col_cursor
);
1798 rect_copy( cursor
, vg_ui
.click_fader_end
);
1802 int run
= _ui_textbox_run_remaining( pos
, wrap_length
);
1803 run
= VG_MIN( run
, remaining
);
1805 cursor
[0] = text_rect
[0] + pos
[0]*UI_GLYPH_SPACING_X
-1;
1806 cursor
[1] = text_rect
[1] + pos
[1]*14;
1807 cursor
[2] = (float)(run
)*(float)UI_GLYPH_SPACING_X
;
1810 ui_fill( cursor
, col_cursor
);
1817 rect_copy( cursor
, vg_ui
.click_fader_end
);
1821 cursor
[0] = text_rect
[0] + start
*UI_GLYPH_SPACING_X
-1;
1822 cursor
[1] = text_rect
[1];
1829 cursor
[2] = (float)(chars
)*(float)UI_GLYPH_SPACING_X
;
1832 if( (vg_ui
.click_fade_opacity
<=0.0f
) &&
1833 ui_clip( rect
, cursor
, cursor
) ){
1834 ui_fill( cursor
, col_cursor
);
1837 rect_copy( cursor
, vg_ui
.click_fader_end
);
1844 if( click
|| (flags
& UI_TEXTBOX_AUTOFOCUS
) ){
1845 if( (target
&& hover
) || (flags
& UI_TEXTBOX_AUTOFOCUS
) ){
1848 ui_fill( rect
, col_highlight
);
1849 vg_ui
.ignore_input_frames
= 2;
1850 rect_copy( rect
, vg_ui
.click_fader
);
1851 rect_copy( rect
, vg_ui
.click_fader_end
);
1853 vg_ui
.click_fade_opacity
= 1.0f
;
1854 vg_ui
.textbuf
= buf
;
1855 vg_ui
.focused_control_hit
= 1;
1856 vg_ui
.focused_control_type
= k_ui_control_textbox
;
1857 vg_ui
.textbox
.len
= len
;
1858 vg_ui
.textbox
.flags
= flags
;
1859 vg_ui
.textbox
.cursor_pos
= 0;
1860 vg_ui
.textbox
.cursor_user
= 0;
1863 vg_ui
.textbox
.callbacks
= *callbacks
;
1866 vg_ui
.textbox
.callbacks
.change
= NULL
;
1867 vg_ui
.textbox
.callbacks
.down
= NULL
;
1868 vg_ui
.textbox
.callbacks
.up
= NULL
;
1869 vg_ui
.textbox
.callbacks
.enter
= NULL
;
1872 SDL_StartTextInput();
1876 ui_fill( rect
, col_base
);
1879 ui_outline( rect
, -1, col_highlight
);
1882 ui_ntext( text_rect
, buf
, wrap_length
, 1, k_ui_align_left
, 0 );
1888 * -----------------------------------------------------------------------------
1890 static void ui_start_modal( const char *message
, u32 options
){
1891 vg_ui
.focused_control_type
= k_ui_control_modal
;
1892 vg_ui
.modal
.message
= message
;
1893 vg_ui
.modal
.callbacks
.close
= NULL
;
1894 vg_ui
.modal
.options
= options
;
1896 u32 type
= options
& UI_MODAL_TYPE_BITS
;
1897 if( type
== UI_MODAL_OK
) vg_info( message
);
1898 else if( type
== UI_MODAL_WARN
) vg_warn( message
);
1899 else if( type
== UI_MODAL_GOOD
) vg_success( message
);
1900 else if( type
== UI_MODAL_BAD
) vg_error( message
);
1905 * -----------------------------------------------------------------------------
1911 static void _ui_proc_key( SDL_Keysym ev
)
1913 if( vg_ui
.focused_control_type
!= k_ui_control_textbox
){
1917 struct textbox_mapping
1922 void (*handler
)(void);
1926 { 0, SDLK_LEFT
, _ui_textbox_left
},
1927 { KMOD_SHIFT
, SDLK_LEFT
, _ui_textbox_left_select
},
1928 { 0, SDLK_RIGHT
, _ui_textbox_right
},
1929 { KMOD_SHIFT
, SDLK_RIGHT
, _ui_textbox_right_select
},
1930 { 0, SDLK_DOWN
, _ui_textbox_down
},
1931 { 0, SDLK_UP
, _ui_textbox_up
},
1932 { 0, SDLK_BACKSPACE
, _ui_textbox_backspace
},
1933 { KMOD_SHIFT
, SDLK_BACKSPACE
, _ui_textbox_backspace
},
1934 { KMOD_CTRL
, SDLK_BACKSPACE
, _ui_textbox_backspace
},
1935 { 0, SDLK_DELETE
, _ui_textbox_delete
},
1936 { 0, SDLK_HOME
, _ui_textbox_home
},
1937 { KMOD_SHIFT
, SDLK_HOME
, _ui_textbox_home_select
},
1938 { 0, SDLK_END
, _ui_textbox_end
},
1939 { KMOD_SHIFT
, SDLK_END
, _ui_textbox_end_select
},
1940 { KMOD_CTRL
, SDLK_a
, _ui_textbox_select_all
},
1941 { KMOD_CTRL
, SDLK_c
, _ui_textbox_to_clipboard
},
1942 { KMOD_CTRL
, SDLK_x
, _ui_textbox_cut
},
1943 { KMOD_CTRL
, SDLK_v
, _ui_textbox_clipboard_paste
},
1944 { 0, SDLK_RETURN
, _ui_textbox_enter
},
1945 { 0, SDLK_ESCAPE
, ui_defocus_all
},
1950 if( ev
.mod
& KMOD_SHIFT
)
1953 if( ev
.mod
& KMOD_CTRL
)
1956 if( ev
.mod
& KMOD_ALT
)
1959 for( int i
=0; i
<vg_list_size( mappings
); i
++ ){
1960 struct textbox_mapping
*mapping
= &mappings
[i
];
1962 if( mapping
->key
== ev
.sym
){
1963 if( mapping
->mod
== 0 ){
1969 else if( (mod
& mapping
->mod
) == mapping
->mod
){
1978 * Callback for text entry mode
1980 VG_STATIC
void ui_proc_utf8( const char *text
)
1982 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1983 const char *ptr
= text
;
1986 if( *ptr
!= '`' ) _ui_textbox_put_char( *ptr
);
1990 if( vg_ui
.textbox
.callbacks
.change
){
1991 vg_ui
.textbox
.callbacks
.change( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1996 static void ui_label( ui_rect rect
, const char *text
, ui_px size
,
1997 ui_px gap
, ui_rect r
)
2000 ui_px width
= (ui_text_line_width(text
)+UI_GLYPH_SPACING_X
) * size
;
2001 ui_split( rect
, k_ui_axis_v
, width
, gap
, l
, r
);
2002 ui_text( l
, text
, 1, k_ui_align_middle_left
, 0 );
2005 #endif /* VG_IMGUI_H */