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];
92 typedef struct ui_font ui_font
;
94 static const ui_font vg_ui_font_small
= {
115 #define UI_RGB( STDHEX ) 0xff000000 |\
116 ((STDHEX&0x000000ff)<<16) |\
117 ((STDHEX&0x0000ff00) ) |\
118 ((STDHEX&0x00ff0000)>>16)
120 #define UI_TEXTBOX_MULTILINE 0x1
121 #define UI_TEXTBOX_WRAP 0x2
122 #define UI_TEXTBOX_AUTOFOCUS 0x4
124 #define UI_MODAL_OK 0x0
125 #define UI_MODAL_GOOD 0x1
126 #define UI_MODAL_BAD 0x2
127 #define UI_MODAL_WARN 0x3
128 #define UI_MODAL_TYPE_BITS 0x3
130 #define UI_MOUSE_LEFT (SDL_BUTTON(SDL_BUTTON_LEFT))
131 #define UI_MOUSE_RIGHT (SDL_BUTTON(SDL_BUTTON_RIGHT))
132 #define UI_MOUSE_MIDDLE (SDL_BUTTON(SDL_BUTTON_MIDDLE))
136 #define UI_BOTTOM 0x4
140 struct ui_vert
*vertex_buffer
;
142 u32 max_verts
, max_indices
,
143 cur_vert
, cur_indice
,
144 vert_start
, indice_start
;
147 void *focused_control_id
; /* uses the memory location of various locking
153 u32 focused_control_hit
;
154 enum ui_control_type
{
156 k_ui_control_textbox
,
160 focused_control_type
;
162 union{ /* controls that can be focused */
164 int cursor_user
, cursor_pos
;
168 struct ui_textbox_callbacks
{
169 void (*enter
)( char *, u32
),
170 (*up
)( char *, u32
),
171 (*down
)( char *, u32
),
172 (*change
)( char *, u32
);
194 struct ui_modal_callbacks
{
201 GLuint tex_glyphs
, vao
, vbo
, ebo
;
203 ui_px mouse
[2], mouse_click
[2];
205 u32 ignore_input_frames
;
208 ui_rect click_fader
, click_fader_end
;
209 float click_fade_opacity
;
222 SDL_Cursor
*cursor_map
[ k_ui_cursor_max
];
226 [ k_ui_bg
+0 ] = UI_RGB( 0x1d2021 ),
227 [ k_ui_bg
+1 ] = UI_RGB( 0x282828 ),
228 [ k_ui_bg
+2 ] = UI_RGB( 0x3c3836 ),
229 [ k_ui_bg
+3 ] = UI_RGB( 0x504945 ),
230 [ k_ui_bg
+4 ] = UI_RGB( 0x665c54 ),
231 [ k_ui_bg
+5 ] = UI_RGB( 0x7c6f64 ),
232 [ k_ui_bg
+6 ] = UI_RGB( 0x928374 ),
233 [ k_ui_bg
+7 ] = UI_RGB( 0xa89984 ),
235 [ k_ui_fg
+0 ] = UI_RGB( 0xebdbb2 ),
236 [ k_ui_fg
+1 ] = UI_RGB( 0xfbf1c7 ),
237 [ k_ui_fg
+2 ] = UI_RGB( 0xd5c4a1 ),
238 [ k_ui_fg
+3 ] = UI_RGB( 0xbdae93 ),
239 [ k_ui_fg
+4 ] = UI_RGB( 0xa89984 ),
240 [ k_ui_fg
+5 ] = UI_RGB( 0x000000 ),
241 [ k_ui_fg
+6 ] = UI_RGB( 0x000000 ),
242 [ k_ui_fg
+7 ] = UI_RGB( 0x000000 ),
244 [ k_ui_red
] = UI_RGB( 0xcc241d ),
245 [ k_ui_orange
] = UI_RGB( 0xd65d0e ),
246 [ k_ui_yellow
] = UI_RGB( 0xd79921 ),
247 [ k_ui_green
] = UI_RGB( 0x98971a ),
248 [ k_ui_aqua
] = UI_RGB( 0x689d6a ),
249 [ k_ui_blue
] = UI_RGB( 0x458588 ),
250 [ k_ui_purple
] = UI_RGB( 0xb16286 ),
251 [ k_ui_gray
] = UI_RGB( 0x928374 ),
252 [ k_ui_red
+ k_ui_brighter
] = UI_RGB( 0xfb4934 ),
253 [ k_ui_orange
+ k_ui_brighter
] = UI_RGB( 0xfe8019 ),
254 [ k_ui_yellow
+ k_ui_brighter
] = UI_RGB( 0xfabd2f ),
255 [ k_ui_green
+ k_ui_brighter
] = UI_RGB( 0xb8bb26 ),
256 [ k_ui_aqua
+ k_ui_brighter
] = UI_RGB( 0x8ec07c ),
257 [ k_ui_blue
+ k_ui_brighter
] = UI_RGB( 0x83a598 ),
258 [ k_ui_purple
+ k_ui_brighter
] = UI_RGB( 0xd3869b ),
259 [ k_ui_gray
+ k_ui_brighter
] = UI_RGB( 0xa89984 ),
261 .font
= &vg_ui_font_small
264 static struct vg_shader _shader_ui
=
272 "layout (location=0) in vec2 a_co;"
273 "layout (location=1) in vec2 a_uv;"
274 "layout (location=2) in vec4 a_colour;"
277 "out vec2 aTexCoords;"
283 "gl_Position = vec4( uPv * vec3( a_co, 1.0 ), 1.0 );"
284 "aTexCoords = a_uv * 0.00390625;" /* TODO: Uniform */
285 "aColour = a_colour;"
294 "uniform sampler2D uTexGlyphs;"
295 "out vec4 FragColor;"
297 "in vec2 aTexCoords;"
305 "vec4 diffuse = aColour;"
307 "if( diffuse.a == 0.0 )"
309 "diffuse.a = texture( uTexGlyphs, aTexCoords ).r;"
312 "FragColor = diffuse;"
317 static struct vg_shader _shader_ui_image
= {
318 .name
= "[vg] ui_image",
324 "layout (location=0) in vec2 a_co;"
325 "layout (location=1) in vec2 a_uv;"
326 "layout (location=2) in vec4 a_colour;"
329 "out vec2 aTexCoords;"
335 "gl_Position = vec4( uPv * vec3( a_co, 1.0 ), 1.0 );"
336 "aTexCoords = a_uv * 0.00390625;"
337 "aColour = a_colour;"
346 "uniform sampler2D uTexImage;"
347 "out vec4 FragColor;"
349 "in vec2 aTexCoords;"
355 "vec4 colour = texture( uTexImage, aTexCoords );"
356 "FragColor = colour;"
361 static void _vg_ui_init(void){
362 if( !vg_shader_compile( &_shader_ui
) ||
363 !vg_shader_compile( &_shader_ui_image
) )
364 vg_fatal_error( "Failed to compile ui shader" );
368 * ----------------------------------------
371 vg_ui
.max_indices
= 20000;
372 vg_ui
.max_verts
= 30000;
374 /* Generate the buffer we are gonna be drawing to */
375 glGenVertexArrays( 1, &vg_ui
.vao
);
376 glGenBuffers( 1, &vg_ui
.vbo
);
377 glGenBuffers( 1, &vg_ui
.ebo
);
379 glBindVertexArray( vg_ui
.vao
);
380 glBindBuffer( GL_ARRAY_BUFFER
, vg_ui
.vbo
);
382 glBufferData( GL_ARRAY_BUFFER
,
383 vg_ui
.max_verts
* sizeof( struct ui_vert
),
384 NULL
, GL_DYNAMIC_DRAW
);
385 glBindVertexArray( vg_ui
.vao
);
387 glBindBuffer( GL_ELEMENT_ARRAY_BUFFER
, vg_ui
.ebo
);
388 glBufferData( GL_ELEMENT_ARRAY_BUFFER
,
389 vg_ui
.max_indices
* sizeof( u16
), NULL
, GL_DYNAMIC_DRAW
);
394 u32
const stride
= sizeof( struct ui_vert
);
397 glVertexAttribPointer( 0, 2, GL_SHORT
, GL_FALSE
, stride
,
398 (void *)offsetof( struct ui_vert
, co
) );
399 glEnableVertexAttribArray( 0 );
402 glVertexAttribPointer( 1, 2, GL_UNSIGNED_SHORT
, GL_FALSE
, stride
,
403 (void *)offsetof( struct ui_vert
, uv
) );
404 glEnableVertexAttribArray( 1 );
407 glVertexAttribPointer( 2, 4, GL_UNSIGNED_BYTE
, GL_TRUE
, stride
,
408 (void *)offsetof( struct ui_vert
, colour
) );
409 glEnableVertexAttribArray( 2 );
413 /* Alloc RAM default context */
414 u32 vert_size
= vg_ui
.max_verts
*sizeof(struct ui_vert
),
415 inds_size
= vg_align8( vg_ui
.max_indices
*sizeof(u16
) );
417 vg_ui
.vertex_buffer
= vg_linear_alloc( vg_mem
.rtmemory
, vert_size
);
418 vg_ui
.indice_buffer
= vg_linear_alloc( vg_mem
.rtmemory
, inds_size
);
421 * -----------------------------------------------------
424 /* Load default font */
426 #include "vg/vg_pxfont_thin.h"
429 u32 pixels
= 0, total
= 256*256, data
= 0;
432 while( pixels
< total
){
433 for( int b
= 31; b
>= 0; b
-- ){
434 image
[ pixels
++ ] = (compressed
[data
] & (0x1u
<< b
))? 0xffu
: 0x00u
;
436 if( pixels
>= total
){
444 glGenTextures( 1, &vg_ui
.tex_glyphs
);
445 glBindTexture( GL_TEXTURE_2D
, vg_ui
.tex_glyphs
);
446 glTexImage2D( GL_TEXTURE_2D
, 0, GL_R8
, 256, 256, 0,
447 GL_RED
, GL_UNSIGNED_BYTE
, image
);
450 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_WRAP_S
, GL_CLAMP_TO_EDGE
);
451 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_WRAP_T
, GL_CLAMP_TO_EDGE
);
452 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_MIN_FILTER
, GL_NEAREST
);
453 glTexParameteri( GL_TEXTURE_2D
, GL_TEXTURE_MAG_FILTER
, GL_NEAREST
);
457 * ---------------------------------------------------------------
460 vg_ui
.cursor_map
[ k_ui_cursor_default
] =
461 SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_ARROW
);
462 vg_ui
.cursor_map
[ k_ui_cursor_hand
] =
463 SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_HAND
);
464 vg_ui
.cursor_map
[ k_ui_cursor_ibeam
] =
465 SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_IBEAM
);
473 static void rect_copy( ui_rect a
, ui_rect b
){
474 for( int i
=0; i
<4; i
++ )
478 static void ui_flush( enum ui_shader shader
){
479 u32 vertex_offset
= vg_ui
.vert_start
*sizeof(ui_vert
),
480 vertex_count
= vg_ui
.cur_vert
-vg_ui
.vert_start
,
481 vertex_size
= vertex_count
*sizeof(ui_vert
),
483 indice_offset
= vg_ui
.indice_start
*sizeof(u16
),
484 indice_count
= vg_ui
.cur_indice
-vg_ui
.indice_start
,
485 indice_size
= indice_count
* sizeof(u16
);
487 if( !vertex_size
|| !indice_size
)
490 glBindVertexArray( vg_ui
.vao
);
491 glBindBuffer( GL_ARRAY_BUFFER
, vg_ui
.vbo
);
492 glBufferSubData( GL_ARRAY_BUFFER
, vertex_offset
, vertex_size
,
493 vg_ui
.vertex_buffer
+vg_ui
.vert_start
);
495 glBindBuffer( GL_ELEMENT_ARRAY_BUFFER
, vg_ui
.ebo
);
496 glBufferSubData( GL_ELEMENT_ARRAY_BUFFER
, indice_offset
, indice_size
,
497 vg_ui
.indice_buffer
+vg_ui
.indice_start
);
499 glDisable( GL_DEPTH_TEST
);
500 glEnable( GL_BLEND
);
501 glBlendFunc( GL_SRC_ALPHA
, GL_ONE_MINUS_SRC_ALPHA
);
502 glBlendEquation( GL_FUNC_ADD
);
503 glDisable( GL_CULL_FACE
);
505 m3x3f view
= M3X3_IDENTITY
;
506 m3x3_translate( view
, (v3f
){ -1.0f
, 1.0f
, 0.0f
} );
507 m3x3_scale( view
, (v3f
){ 1.0f
/((float)vg
.window_x
*0.5f
),
508 -1.0f
/((float)vg
.window_y
*0.5f
), 1.0f
} );
510 if( shader
== k_ui_shader_colour
){
511 glUseProgram( _shader_ui
.id
);
513 glUniformMatrix3fv( glGetUniformLocation( _shader_ui
.id
, "uPv" ), 1,
514 GL_FALSE
, (float *)view
);
516 glActiveTexture( GL_TEXTURE0
);
517 glBindTexture( GL_TEXTURE_2D
, vg_ui
.tex_glyphs
);
518 glUniform1i( glGetUniformLocation( _shader_ui
.id
, "uTexGlyphs" ), 0 );
520 else if( shader
== k_ui_shader_image
){
521 glUseProgram( _shader_ui_image
.id
);
522 glUniformMatrix3fv( glGetUniformLocation( _shader_ui_image
.id
, "uPv" ), 1,
523 GL_FALSE
, (float *)view
);
524 glUniform1i( glGetUniformLocation(_shader_ui_image
.id
,"uTexImage"), 0 );
527 vg_fatal_error( "Invalid UI shader (%d)\n", shader
);
529 glDrawElements( GL_TRIANGLES
, indice_count
, GL_UNSIGNED_SHORT
,
530 (void *)(vg_ui
.indice_start
*sizeof(u16
)) );
532 glDisable( GL_BLEND
);
534 vg_ui
.indice_start
= vg_ui
.cur_indice
;
535 vg_ui
.vert_start
= vg_ui
.cur_vert
;
538 static void ui_fill_rect( ui_rect rect
, u32 colour
, ui_px uv
[4] ){
539 /* this if far from ideal but stops us from crashing */
540 if( (vg_ui
.cur_vert
+ 4 > vg_ui
.max_verts
) ||
541 (vg_ui
.cur_indice
+ 6 > vg_ui
.max_indices
))
544 struct ui_vert
*vertices
= &vg_ui
.vertex_buffer
[ vg_ui
.cur_vert
];
545 u16
*indices
= &vg_ui
.indice_buffer
[ vg_ui
.cur_indice
];
547 for( int i
=0; i
<4; i
++ ){
548 vertices
[i
].colour
= colour
;
551 vertices
[0].co
[0] = rect
[0];
552 vertices
[0].co
[1] = rect
[1];
553 vertices
[0].uv
[0] = uv
[0];
554 vertices
[0].uv
[1] = uv
[1];
555 vertices
[1].co
[0] = rect
[0]+rect
[2];
556 vertices
[1].co
[1] = rect
[1];
557 vertices
[1].uv
[0] = uv
[2];
558 vertices
[1].uv
[1] = uv
[1];
559 vertices
[2].co
[0] = rect
[0]+rect
[2];
560 vertices
[2].co
[1] = rect
[1]+rect
[3];
561 vertices
[2].uv
[0] = uv
[2];
562 vertices
[2].uv
[1] = uv
[3];
563 vertices
[3].co
[0] = rect
[0];
564 vertices
[3].co
[1] = rect
[1]+rect
[3];
565 vertices
[3].uv
[0] = uv
[0];
566 vertices
[3].uv
[1] = uv
[3];
567 u16 ind_start
= vg_ui
.cur_vert
;
569 u16 start
= vg_ui
.cur_vert
;
570 u32 mesh
[] = { 0,2,1, 0,3,2 };
572 for( u32 i
=0; i
<vg_list_size(mesh
); i
++ ){
573 indices
[i
] = start
+mesh
[i
];
576 vg_ui
.cur_indice
+= 6;
580 static void ui_fill( ui_rect rect
, u32 colour
){
581 ui_fill_rect( rect
, colour
, (ui_px
[4]){ 4,4,4,4 } );
584 static void ui_outline( ui_rect rect
, ui_px thickness
, u32 colour
, u32 mask
){
585 /* this if far from ideal but stops us from crashing */
586 if( (vg_ui
.cur_vert
+ 8 > vg_ui
.max_verts
) ||
587 (vg_ui
.cur_indice
+ 24 > vg_ui
.max_indices
))
590 struct ui_vert
*vertices
= &vg_ui
.vertex_buffer
[ vg_ui
.cur_vert
];
591 u16
*indices
= &vg_ui
.indice_buffer
[ vg_ui
.cur_indice
];
593 for( int i
=0; i
<8; i
++ ){
594 vertices
[i
].uv
[0] = 4;
595 vertices
[i
].uv
[1] = 4;
596 vertices
[i
].colour
= colour
;
599 vertices
[0].co
[0] = rect
[0];
600 vertices
[0].co
[1] = rect
[1];
601 vertices
[1].co
[0] = rect
[0]+rect
[2];
602 vertices
[1].co
[1] = rect
[1];
603 vertices
[2].co
[0] = rect
[0]+rect
[2];
604 vertices
[2].co
[1] = rect
[1]+rect
[3];
605 vertices
[3].co
[0] = rect
[0];
606 vertices
[3].co
[1] = rect
[1]+rect
[3];
607 vertices
[4].co
[0] = vertices
[0].co
[0]-thickness
;
608 vertices
[4].co
[1] = vertices
[0].co
[1]-thickness
;
609 vertices
[5].co
[0] = vertices
[1].co
[0]+thickness
;
610 vertices
[5].co
[1] = vertices
[1].co
[1]-thickness
;
611 vertices
[6].co
[0] = vertices
[2].co
[0]+thickness
;
612 vertices
[6].co
[1] = vertices
[2].co
[1]+thickness
;
613 vertices
[7].co
[0] = vertices
[3].co
[0]-thickness
;
614 vertices
[7].co
[1] = vertices
[3].co
[1]+thickness
;
616 u16 start
= vg_ui
.cur_vert
;
617 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 };
620 mask
= UI_TOP
|UI_LEFT
|UI_BOTTOM
|UI_RIGHT
;
623 for( u32 i
=0; i
<vg_list_size(mesh
)/6; i
++ ){
624 if( (0x1<<i
) & mask
){
625 for( u32 j
=0; j
<6; j
++ )
626 indices
[c
++] = start
+mesh
[i
*6+j
];
630 vg_ui
.cur_indice
+= c
;
634 static void ui_split( ui_rect rect
,
635 enum ui_axis other
, ui_px width
, ui_px gap
,
636 ui_rect l
, ui_rect r
){
637 enum ui_axis dir
= other
^ 0x1;
639 if( width
< 0 ) width
= rect
[ 2+dir
] + width
;
642 rect_copy( rect
, temp
);
644 l
[ dir
] = temp
[ dir
];
645 r
[ dir
] = temp
[ dir
] + width
+ (gap
/2);
646 l
[ other
] = temp
[ other
];
647 r
[ other
] = temp
[ other
];
648 l
[ 2+dir
] = width
- (gap
/2);
649 r
[ 2+dir
] = temp
[ 2+dir
] - width
- (gap
/2);
650 l
[ 2+other
] = temp
[ 2+other
];
651 r
[ 2+other
] = temp
[ 2+other
];
654 static ui_px
ui_text_line_width( const char *str
);
656 static void ui_rect_center( ui_rect parent
, ui_rect rect
){
657 rect
[0] = parent
[0] + (parent
[2]-rect
[2])/2;
658 rect
[1] = parent
[1] + (parent
[3]-rect
[3])/2;
661 static void ui_fit_item( ui_rect rect
, ui_px size
[2], ui_rect d
){
662 i32 rp
= (i32
)rect
[2] * (i32
)size
[1],
663 rc
= (i32
)size
[0] * (i32
)rect
[3];
665 enum ui_axis dir
, other
;
666 if( rc
> rp
) dir
= k_ui_axis_h
;
667 else dir
= k_ui_axis_v
;
670 d
[2+dir
] = rect
[2+dir
];
671 d
[2+other
] = (rect
[2+dir
] * size
[other
]) / size
[dir
];
673 ui_rect_center( rect
, d
);
676 static void ui_split_ratio( ui_rect rect
, enum ui_axis dir
, float ratio
,
677 ui_px gap
, ui_rect l
, ui_rect r
){
678 ui_px width
= (float)rect
[ 2+(dir
^0x1) ] * ratio
;
679 ui_split( rect
, dir
, width
, gap
, l
, r
);
682 static void ui_rect_pad( ui_rect rect
, ui_px pad
[2] ){
689 static ui_px
ui_text_line_width( const char *str
){
691 const char *_c
= str
;
694 while( (c
= *(_c
++)) ){
695 if( c
>= 32 ) length
++;
696 else if( c
== '\n' ) break;
699 return length
* vg_ui
.font
->spacing
;
702 static ui_px
ui_text_string_height( const char *str
){
704 const char *_c
= str
;
707 while( (c
= *(_c
++)) ){
708 if( c
== '\n' ) height
++;
714 static ui_px
ui_text_aligned_x( const char *str
, ui_rect rect
, ui_px scale
,
715 enum ui_align align
){
716 enum ui_align lwr
= k_ui_align_lwr
& align
;
717 if( lwr
== k_ui_align_left
){
721 ui_px width
= ui_text_line_width( str
) * scale
;
723 if( lwr
== k_ui_align_right
)
724 return rect
[0] + rect
[2]-width
;
726 return rect
[0] + (rect
[2]-width
)/2;
730 static ui_px
ui_min( ui_px a
, ui_px b
){ return a
<b
?a
:b
; }
731 static ui_px
ui_max( ui_px a
, ui_px b
){ return a
>b
?a
:b
; }
732 static ui_px
ui_clamp( ui_px a
, ui_px min
, ui_px max
){
733 return ui_min( max
, ui_max( a
, min
) );
736 static int ui_clip( ui_rect parent
, ui_rect child
, ui_rect clipped
){
737 ui_px parent_max
[2], child_max
[2];
738 parent_max
[0] = parent
[0]+parent
[2];
739 parent_max
[1] = parent
[1]+parent
[3];
740 child_max
[0] = child
[0]+child
[2];
741 child_max
[1] = child
[1]+child
[3];
743 clipped
[0] = ui_clamp( child
[0], parent
[0], parent_max
[0] );
744 clipped
[1] = ui_clamp( child
[1], parent
[1], parent_max
[1] );
745 clipped
[2] = ui_clamp( child_max
[0], parent
[0], parent_max
[0] );
746 clipped
[3] = ui_clamp( child_max
[1], parent
[1], parent_max
[1] );
748 if( clipped
[0] == clipped
[2] ||
749 clipped
[1] == clipped
[3] )
752 clipped
[2] -= clipped
[0];
753 clipped
[3] -= clipped
[1];
758 static int ui_inside_rect( ui_rect rect
, ui_px co
[2] ){
759 if( co
[0] >= rect
[0] &&
761 co
[0] < rect
[0]+rect
[2] &&
762 co
[1] < rect
[1]+rect
[3] ){
769 static int ui_click_down( u32 mask
){
770 if( vg_ui
.ignore_input_frames
) return 0;
771 if( (vg_ui
.mouse_state
[0] & mask
) &&
772 !(vg_ui
.mouse_state
[1] & mask
) )
778 static int ui_clicking( u32 mask
){
779 if( vg_ui
.ignore_input_frames
) return 0;
780 return vg_ui
.mouse_state
[0] & mask
;
783 static int ui_click_up( u32 mask
){
784 if( vg_ui
.ignore_input_frames
) return 0;
785 if( (vg_ui
.mouse_state
[1] & mask
) &&
786 !(vg_ui
.mouse_state
[0] & mask
) )
792 static void ui_prerender(void){
794 vg_ui
.mouse_state
[1] = vg_ui
.mouse_state
[0];
795 vg_ui
.mouse_state
[0] = SDL_GetMouseState( &x
, &y
);
800 vg_ui
.cur_indice
= 0;
801 vg_ui
.vert_start
= 0;
802 vg_ui
.indice_start
= 0;
803 vg_ui
.focused_control_hit
= 0;
804 vg_ui
.cursor
= k_ui_cursor_default
;
805 vg_ui
.wants_mouse
= 0;
807 if( vg_ui
.ignore_input_frames
){
808 vg_ui
.ignore_input_frames
--;
812 if( ui_click_down(UI_MOUSE_LEFT
)||ui_click_down(UI_MOUSE_MIDDLE
) ){
813 vg_ui
.mouse_click
[0] = vg_ui
.mouse
[0];
814 vg_ui
.mouse_click
[1] = vg_ui
.mouse
[1];
818 static u32
ui_colour( enum ui_scheme_colour id
){
819 return vg_ui
.scheme
[ id
];
822 /* get an appropriately contrasting colour given the base */
823 static u32
ui_colourcont( enum ui_scheme_colour id
){
824 if ( id
< k_ui_bg
+6 ) return ui_colour( k_ui_fg
);
825 else if( id
< k_ui_fg
) return ui_colour( k_ui_bg
+1 );
826 else if( id
< k_ui_hue
) return ui_colour( k_ui_bg
+3 );
827 else if( id
< k_ui_red
+k_ui_brighter
) return ui_colour( k_ui_fg
);
828 else return ui_colour( k_ui_fg
+1 );
831 static void ui_hex_to_norm( u32 hex
, v4f norm
){
832 norm
[0] = ((hex
) & 0xff);
833 norm
[1] = ((hex
>>8 ) & 0xff);
834 norm
[2] = ((hex
>>16) & 0xff);
835 norm
[3] = ((hex
>>24) & 0xff);
836 v4_muls( norm
, 1.0f
/255.0f
, norm
);
839 static void ui_text_glyph( const struct ui_font
*font
, ui_px scale
,
840 u8 glyph
, ui_rect out_texcoords
){
841 glyph
-= font
->ascii_start
;
843 ui_px per_row
= font
->sheet_size
/ font
->glyph_width
,
844 column
= (ui_px
)glyph
% per_row
,
845 row
= (glyph
- column
) / per_row
;
847 out_texcoords
[0] = column
* font
->glyph_width
;
848 out_texcoords
[1] = row
* font
->glyph_height
+ font
->offset_y
;
849 out_texcoords
[2] = out_texcoords
[0] + font
->glyph_width
;
850 out_texcoords
[3] = out_texcoords
[1] + font
->glyph_height
;
853 static u32
ui_ntext( ui_rect rect
, const char *str
, u32 len
, ui_px scale
,
854 enum ui_align align
, u32 colour
){
856 if( colour
== 0 ) colour
= ui_colour( k_ui_fg
);
858 colour
&= 0x00ffffff;
860 const char *_c
= str
;
863 text_cursor
[0] = ui_text_aligned_x( str
, rect
, scale
, align
);
864 text_cursor
[1] = rect
[1];
865 text_cursor
[2] = vg_ui
.font
->glyph_width
*scale
;
866 text_cursor
[3] = vg_ui
.font
->glyph_height
*scale
;
868 u32 printed_chars
= 0;
870 if( align
& (k_ui_align_middle
|k_ui_align_bottom
) ){
871 ui_px height
= ui_text_string_height( str
) * scale
;
873 if( align
& k_ui_align_bottom
)
874 text_cursor
[1] += rect
[3]-height
;
876 text_cursor
[1] += (rect
[3]-height
)/2;
879 while( (c
= *(_c
++)) ){
880 if( printed_chars
>= len
){
882 text_cursor
[1] += vg_ui
.font
->line_height
*scale
;
883 text_cursor
[0] = ui_text_aligned_x( _c
, rect
, scale
, align
);
884 text_cursor
[0] -= vg_ui
.font
->spacing
*scale
;
887 ui_text_glyph( vg_ui
.font
, scale
, '\xb6' /*FIXME*/, glyph
);
888 ui_fill_rect( text_cursor
, 0x00ffffff, glyph
);
889 text_cursor
[0] += vg_ui
.font
->spacing
*scale
;
893 text_cursor
[1] += vg_ui
.font
->line_height
*scale
;
894 text_cursor
[0] = ui_text_aligned_x( _c
, rect
, scale
, align
);
900 ui_text_glyph( vg_ui
.font
, scale
, c
, glyph
);
902 ui_rect cursor_clipped
;
903 if( ui_clip( rect
, text_cursor
, cursor_clipped
) ){
904 ui_fill_rect( cursor_clipped
, colour
, glyph
);
907 else if( c
== '\x1B' ){
911 for( int i
=0; i
<3; i
++ ){
917 case '0': colour
= ui_colour( k_ui_fg
); break;
918 case '3'|'0'<<8: colour
= ui_colour( k_ui_bg
); break;
919 case '3'|'1'<<8: colour
= ui_colour( k_ui_red
); break;
920 case '3'|'2'<<8: colour
= ui_colour( k_ui_green
); break;
921 case '3'|'3'<<8: colour
= ui_colour( k_ui_yellow
); break;
922 case '3'|'4'<<8: colour
= ui_colour( k_ui_blue
); break;
923 case '3'|'5'<<8: colour
= ui_colour( k_ui_purple
); break;
924 case '3'|'6'<<8: colour
= ui_colour( k_ui_aqua
); break;
925 case '3'|'7'<<8: colour
= 0xffffffff; break;
928 colour
&= 0x00ffffff;
932 colour_id
|= _c
[i
] << (i
*8);
942 else if( c
== '\t' ){
943 text_cursor
[0] += vg_ui
.font
->spacing
*scale
*4;
948 text_cursor
[0] += vg_ui
.font
->spacing
*scale
;
952 return printed_chars
;
955 static void ui_text( ui_rect rect
, const char *str
, ui_px scale
,
956 enum ui_align align
, u32 colour
){
957 ui_ntext( rect
, str
, 1024, scale
, align
, colour
);
961 * Standard layout stuff
962 * -----------------------------------------------------------------------------
965 static void ui_panel( ui_rect in_rect
, ui_rect out_panel
){
966 ui_fill( in_rect
, ui_colour( k_ui_bg
+1 ) );
967 ui_outline( in_rect
, 1, ui_colour( k_ui_bg
+7 ), 0 );
968 rect_copy( in_rect
, out_panel
);
969 ui_rect_pad( out_panel
, (ui_px
[2]){ k_ui_padding
, k_ui_padding
} );
972 static void ui_label( ui_rect rect
, const char *text
, ui_px size
,
973 ui_px gap
, ui_rect r
){
975 ui_px width
= (ui_text_line_width(text
)+vg_ui
.font
->spacing
) * size
;
976 ui_split( rect
, k_ui_axis_v
, width
, gap
, l
, r
);
977 ui_text( l
, text
, 1, k_ui_align_middle_left
, 0 );
980 static void ui_standard_widget( ui_rect inout_panel
, ui_rect out_rect
,
982 ui_px height
= (count
* vg_ui
.font
->glyph_height
+ 18) * k_ui_scale
;
983 ui_split( inout_panel
, k_ui_axis_h
, height
, k_ui_padding
,
984 out_rect
, inout_panel
);
987 static void ui_info( ui_rect inout_panel
, const char *text
){
989 ui_standard_widget( inout_panel
, box
, 1 );
990 ui_text( box
, text
, 1, k_ui_align_middle_left
, 0 );
993 static void ui_image( ui_rect rect
, GLuint image
){
994 ui_flush( k_ui_shader_colour
);
995 glActiveTexture( GL_TEXTURE0
);
996 glBindTexture( GL_TEXTURE_2D
, image
);
997 ui_fill_rect( rect
, 0xffffffff, (ui_px
[4]){ 0,256,256,0 } );
998 ui_flush( k_ui_shader_image
);
1001 static u32
v4f_u32_colour( v4f colour
){
1002 u32 r
= colour
[0] * 255.0f
,
1003 g
= colour
[1] * 255.0f
,
1004 b
= colour
[2] * 255.0f
,
1005 a
= colour
[3] * 255.0f
;
1007 return r
| (g
<<8) | (b
<<16) | (a
<<24);
1010 static void ui_defocus_all(void){
1011 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1012 SDL_StopTextInput();
1015 vg_ui
.focused_control_id
= NULL
;
1016 vg_ui
.focused_control_hit
= 0;
1017 vg_ui
.focused_control_type
= k_ui_control_none
;
1020 enum ui_button_state
{
1021 k_ui_button_none
= 0,
1022 k_ui_button_click
= 1,
1023 k_ui_button_holding_inside
= 2,
1024 k_ui_button_holding_outside
= 3,
1025 k_ui_button_hover
= 4
1028 static enum ui_button_state
ui_colourbutton( ui_rect rect
,
1029 enum ui_scheme_colour colour
){
1030 int clickup
= ui_click_up(UI_MOUSE_LEFT
),
1031 click
= ui_clicking(UI_MOUSE_LEFT
) | clickup
,
1032 target
= ui_inside_rect( rect
, vg_ui
.mouse_click
) && click
,
1033 hover
= ui_inside_rect( rect
, vg_ui
.mouse
);
1035 u32 col_base
= vg_ui
.scheme
[ colour
],
1036 col_highlight
= vg_ui
.scheme
[ k_ui_fg
],
1037 col_hover
= vg_ui
.scheme
[ colour
+ k_ui_brighter
];
1039 if( vg_ui
.focused_control_type
!= k_ui_control_none
){
1047 vg_ui
.cursor
= k_ui_cursor_hand
;
1054 ui_fill( rect
, col_highlight
);
1055 vg_ui
.ignore_input_frames
= 2;
1056 rect_copy( rect
, vg_ui
.click_fader
);
1058 rect_copy( rect
, vg_ui
.click_fader_end
);
1059 vg_ui
.click_fader_end
[3] = 0;
1060 ui_rect_center( rect
, vg_ui
.click_fader_end
);
1062 vg_ui
.click_fade_opacity
= 1.0f
;
1064 return k_ui_button_click
;
1067 ui_fill( rect
, col_highlight
);
1068 return k_ui_button_holding_inside
;
1072 ui_fill( rect
, col_base
);
1073 ui_outline( rect
, 1, col_highlight
, 0 );
1074 return k_ui_button_holding_outside
;
1078 ui_fill( rect
, col_base
);
1079 return k_ui_button_none
;
1084 ui_fill( rect
, col_hover
);
1085 return k_ui_button_hover
;
1088 ui_fill( rect
, col_base
);
1089 return k_ui_button_none
;
1094 static enum ui_button_state
ui_colourbutton_text(
1095 ui_rect rect
, const char *string
, ui_px scale
,
1096 enum ui_scheme_colour colour
){
1097 enum ui_button_state state
= ui_colourbutton( rect
, colour
);
1098 ui_rect t
= { 0,0, ui_text_line_width( string
)*scale
, 14*scale
};
1099 ui_rect_center( rect
, t
);
1101 u32 text_colour
= ui_colourcont(colour
);
1102 if( state
== k_ui_button_holding_inside
)
1103 text_colour
= colour
;
1105 ui_text( t
, string
, scale
, k_ui_align_left
, text_colour
);
1109 static enum ui_button_state
ui_button_text( ui_rect rect
,
1110 const char *string
, ui_px scale
){
1111 return ui_colourbutton_text( rect
, string
, scale
, k_ui_bg
+4 );
1114 static enum ui_button_state
ui_button( ui_rect inout_panel
,
1115 const char *string
){
1117 ui_standard_widget( inout_panel
, rect
, 1 );
1118 return ui_colourbutton_text( rect
, string
, 1, k_ui_bg
+4 );
1121 static void ui_enum_post(void);
1122 static void ui_postrender(void){
1123 if( vg_ui
.click_fade_opacity
> 0.0f
){
1124 float scale
= vg_ui
.click_fade_opacity
;
1125 scale
= vg_maxf( 1.0f
/255.0f
, scale
*scale
);
1127 vg_ui
.click_fade_opacity
-= vg
.time_frame_delta
* 3.8f
;
1128 u32 colour
= (0x00ffffff & ui_colour(k_ui_fg
))|0x7f000000;
1130 v4f begin
, end
, dest
;
1131 for( int i
=0; i
<4; i
++ ){
1132 begin
[i
] = vg_ui
.click_fader
[i
];
1133 end
[i
] = vg_ui
.click_fader_end
[i
]+1;
1136 v4_lerp( end
, begin
, scale
, dest
);
1139 for( int i
=0; i
<4; i
++ ){
1143 ui_fill( rect
, colour
);
1146 if( vg_ui
.focused_control_type
== k_ui_control_enum
){
1149 else if( vg_ui
.focused_control_type
== k_ui_control_modal
){
1150 ui_rect screen
= {0,0,vg
.window_x
,vg
.window_y
};
1151 ui_fill( screen
, 0xa0000000 );
1152 ui_rect box
= {0,0,400,200};
1154 u32 colour
= ui_colour(k_ui_fg
),
1155 type
= vg_ui
.modal
.options
& UI_MODAL_TYPE_BITS
;
1156 if ( type
== 1 ) colour
= ui_colour(k_ui_green
);
1157 else if( type
== 2 ) colour
= ui_colour(k_ui_red
);
1158 else if( type
== 3 ) colour
= ui_colour(k_ui_yellow
);
1160 ui_rect_center( screen
, box
);
1161 ui_fill( box
, ui_colour(k_ui_bg
) );
1162 ui_outline( box
, -1, colour
, 0 );
1165 rect_copy( box
, message
);
1167 ui_rect_center( box
, message
);
1169 ui_rect row0
, row1
, btn
;
1170 ui_split_ratio( message
, k_ui_axis_h
, 0.5f
, 0, row0
, row1
);
1171 row0
[0] += vg_ui
.font
->spacing
;
1172 ui_ntext( row0
, vg_ui
.modal
.message
, (box
[2]/vg_ui
.font
->spacing
)-2, 1,
1173 k_ui_align_left
, colour
);
1175 rect_copy( row1
, btn
);
1178 ui_rect_center( row1
, btn
);
1180 vg_ui
.focused_control_type
= k_ui_control_none
; /* HACK */
1181 if( ui_button_text( btn
, "OK", 1 ) != 1 )
1182 vg_ui
.focused_control_hit
= 1;
1183 vg_ui
.focused_control_type
= k_ui_control_modal
; /* HACK */
1184 vg_ui
.wants_mouse
= 1;
1187 ui_flush( k_ui_shader_colour
);
1189 if( !vg_ui
.focused_control_hit
){
1193 if( vg_ui
.wants_mouse
){
1194 SDL_SetWindowGrab( vg
.window
, SDL_FALSE
);
1195 SDL_SetRelativeMouseMode( SDL_FALSE
);
1198 SDL_SetWindowGrab( vg
.window
, SDL_TRUE
);
1199 SDL_SetRelativeMouseMode( SDL_TRUE
);
1202 SDL_SetCursor( vg_ui
.cursor_map
[ vg_ui
.cursor
] );
1208 * -----------------------------------------------------------------------------
1211 static int ui_checkbox( ui_rect inout_panel
, const char *str_label
, i32
*data
){
1212 ui_rect rect
, label
, box
;
1213 ui_standard_widget( inout_panel
, rect
, 1 );
1215 ui_split( rect
, k_ui_axis_v
, -rect
[3], 0, label
, box
);
1216 ui_text( label
, str_label
, k_ui_scale
, k_ui_align_middle_left
, 0 );
1218 int changed
= ui_colourbutton( box
, k_ui_bg
)==1;
1220 *data
= (*data
) ^ 0x1;
1223 ui_rect_pad( box
, (ui_px
[2]){4,4} );
1224 ui_fill( box
, ui_colour( k_ui_orange
) );
1232 * -----------------------------------------------------------------------------
1236 * unfortunately no return value since we only find out that event in the
1239 static void ui_enum( ui_rect inout_panel
, const char *str_label
,
1240 struct ui_enum_opt
*options
, u32 len
, i32
*value
){
1241 ui_rect rect
, label
, box
;
1242 ui_standard_widget( inout_panel
, rect
, 1 );
1243 ui_label( rect
, str_label
, k_ui_scale
, 0, box
);
1245 const char *display
= "OUT OF RANGE";
1247 for( u32 i
=0; i
<len
; i
++ ){
1248 if( *value
== options
[i
].value
){
1249 display
= options
[i
].alias
;
1255 if( ui_button_text( box
, display
, k_ui_scale
) == 1 ){
1256 vg_ui
.focused_control_type
= k_ui_control_enum
;
1257 vg_ui
.ptr_enum
= value
;
1258 vg_ui
._enum
.option_count
= len
;
1259 vg_ui
._enum
.options
= options
;
1260 rect_copy( box
, vg_ui
._enum
.rect
);
1264 ui_outline( box
, 1, ui_colour(k_ui_red
), 0 );
1267 static void ui_enum_post(void){
1269 rect_copy( vg_ui
._enum
.rect
, drawer
);
1270 drawer
[3] *= vg_ui
._enum
.option_count
;
1273 int clickany
= ui_click_up(UI_MOUSE_LEFT
|UI_MOUSE_RIGHT
|UI_MOUSE_MIDDLE
),
1274 hover
= ui_inside_rect( drawer
, vg_ui
.mouse
);
1276 if( clickany
&& !hover
){
1281 vg_ui
.focused_control_type
= k_ui_control_none
;
1282 i32
*value
= vg_ui
.ptr_enum
;
1284 for( u32 i
=0; i
<vg_ui
._enum
.option_count
; i
++ ){
1286 ui_split( drawer
, k_ui_axis_h
, vg_ui
._enum
.rect
[3], 0, button
,drawer
);
1288 enum ui_scheme_colour colour
= k_ui_bg
+3;
1289 if( vg_ui
._enum
.options
[i
].value
== *value
)
1290 colour
= k_ui_orange
;
1292 if( ui_colourbutton_text( button
, vg_ui
._enum
.options
[i
].alias
,
1293 k_ui_scale
, colour
) == 1 ){
1294 *value
= vg_ui
._enum
.options
[i
].value
;
1300 vg_ui
.focused_control_type
= k_ui_control_enum
;
1303 vg_ui
.focused_control_hit
= 1;
1308 * -----------------------------------------------------------------------------
1311 static void _ui_textbox_make_selection( int *start
, int *end
){
1312 *start
= VG_MIN( vg_ui
.textbox
.cursor_pos
, vg_ui
.textbox
.cursor_user
);
1313 *end
= VG_MAX( vg_ui
.textbox
.cursor_pos
, vg_ui
.textbox
.cursor_user
);
1316 static void _ui_textbox_move_cursor( int *cursor0
, int *cursor1
,
1317 int dir
, int snap_together
){
1318 *cursor0
= VG_MAX( 0, vg_ui
.textbox
.cursor_user
+ dir
);
1321 VG_MIN( vg_ui
.textbox
.len
-1, strlen( vg_ui
.textbuf
)),
1325 *cursor1
= *cursor0
;
1328 static int _ui_textbox_makeroom( int datastart
, int length
){
1329 int move_to
= VG_MIN( datastart
+length
, vg_ui
.textbox
.len
-1 );
1330 int move_amount
= strlen( vg_ui
.textbuf
)-datastart
;
1331 int move_end
= VG_MIN( move_to
+move_amount
, vg_ui
.textbox
.len
-1 );
1332 move_amount
= move_end
-move_to
;
1335 memmove( &vg_ui
.textbuf
[ move_to
],
1336 &vg_ui
.textbuf
[ datastart
],
1339 vg_ui
.textbuf
[ move_end
] = '\0';
1341 return VG_MIN( length
, vg_ui
.textbox
.len
-datastart
-1 );
1344 static int _ui_textbox_delete_char( int direction
){
1346 _ui_textbox_make_selection( &start
, &end
);
1348 /* There is no selection */
1350 if( direction
== 1 ) end
= VG_MIN( end
+1, strlen( vg_ui
.textbuf
) );
1351 else if( direction
== -1 ) start
= VG_MAX( start
-1, 0 );
1354 /* Still no selction, no need to do anything */
1358 /* Copy the end->terminator to start */
1359 int remaining_length
= strlen( vg_ui
.textbuf
)+1-end
;
1360 memmove( &vg_ui
.textbuf
[ start
],
1361 &vg_ui
.textbuf
[ end
],
1366 static void _ui_textbox_to_clipboard(void){
1368 _ui_textbox_make_selection( &start
, &end
);
1372 memcpy( buffer
, &vg_ui
.textbuf
[ start
], end
-start
);
1373 buffer
[ end
-start
] = 0x00;
1374 SDL_SetClipboardText( buffer
);
1378 static void ui_start_modal( const char *message
, u32 options
);
1379 static void _ui_textbox_clipboard_paste(void){
1380 if( !SDL_HasClipboardText() )
1383 char *text
= SDL_GetClipboardText();
1388 int datastart
= _ui_textbox_delete_char( 0 );
1389 int length
= strlen( text
);
1391 if( (vg_ui
.textbox
.len
- strlen(vg_ui
.textbuf
)) < length
){
1392 ui_start_modal( "Clipboard content exceeds buffer size.", UI_MODAL_BAD
);
1396 int cpylength
= _ui_textbox_makeroom( datastart
, length
);
1398 memcpy( vg_ui
.textbuf
+ datastart
, text
, cpylength
);
1399 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1400 &vg_ui
.textbox
.cursor_pos
, cpylength
, 1 );
1404 static void _ui_textbox_put_char( char c
){
1405 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char(0);
1406 if( (vg_ui
.textbox
.len
- strlen(vg_ui
.textbuf
)) <= 1 ) return;
1408 if( _ui_textbox_makeroom( vg_ui
.textbox
.cursor_user
, 1 ) )
1409 vg_ui
.textbuf
[ vg_ui
.textbox
.cursor_user
] = c
;
1411 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1412 &vg_ui
.textbox
.cursor_pos
, 1, 1 );
1415 /* Receed secondary cursor */
1416 static void _ui_textbox_left_select(void){
1417 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, -1, 0 );
1420 /* Match and receed both cursors */
1421 static void _ui_textbox_left(void){
1422 int cursor_diff
= vg_ui
.textbox
.cursor_pos
- vg_ui
.textbox
.cursor_user
? 0: 1;
1424 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1425 &vg_ui
.textbox
.cursor_pos
, -cursor_diff
, 1 );
1428 static void _ui_textbox_up(void){
1429 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
){
1430 int line_begin
= vg_ui
.textbox
.cursor_user
;
1432 while( line_begin
){
1433 if( vg_ui
.textbuf
[ line_begin
-1 ] == '\n' ){
1441 int line_above_begin
= line_begin
-1;
1443 while( line_above_begin
){
1444 if( vg_ui
.textbuf
[ line_above_begin
-1 ] == '\n' ){
1448 line_above_begin
--;
1451 int offset
= vg_ui
.textbox
.cursor_user
- line_begin
,
1452 line_length_above
= line_begin
- line_above_begin
-1;
1454 offset
= VG_MIN( line_length_above
, offset
);
1456 vg_ui
.textbox
.cursor_user
= line_above_begin
+offset
;
1457 vg_ui
.textbox
.cursor_pos
= line_above_begin
+offset
;
1460 vg_ui
.textbox
.cursor_user
= line_begin
;
1461 vg_ui
.textbox
.cursor_pos
= line_begin
;
1465 if( vg_ui
.textbox
.callbacks
.up
){
1466 vg_ui
.textbox
.callbacks
.up( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1471 static void _ui_textbox_down(void){
1472 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
){
1473 int line_begin
= vg_ui
.textbox
.cursor_user
;
1475 while( line_begin
){
1476 if( vg_ui
.textbuf
[ line_begin
-1 ] == '\n' ){
1483 int line_below_begin
= vg_ui
.textbox
.cursor_user
;
1486 if( vg_ui
.textbuf
[ line_below_begin
] == '\0' ){
1487 vg_ui
.textbox
.cursor_user
= line_below_begin
;
1488 vg_ui
.textbox
.cursor_pos
= line_below_begin
;
1492 if( vg_ui
.textbuf
[ line_below_begin
] == '\n' ){
1493 line_below_begin
++;
1497 line_below_begin
++;
1500 int line_below_end
= line_below_begin
;
1502 if( vg_ui
.textbuf
[ line_below_end
] == '\0' ||
1503 vg_ui
.textbuf
[ line_below_end
] == '\n' ){
1510 int offset
= vg_ui
.textbox
.cursor_user
- line_begin
,
1511 line_length_below
= line_below_end
- line_below_begin
-1;
1513 offset
= VG_MIN( line_length_below
, offset
);
1515 vg_ui
.textbox
.cursor_user
= line_below_begin
+offset
;
1516 vg_ui
.textbox
.cursor_pos
= line_below_begin
+offset
;
1519 if( vg_ui
.textbox
.callbacks
.down
){
1520 vg_ui
.textbox
.callbacks
.down( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1525 static void _ui_textbox_right_select(void){
1526 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, 1, 0 );
1529 static void _ui_textbox_right(void){
1530 int cursor_diff
= vg_ui
.textbox
.cursor_pos
- vg_ui
.textbox
.cursor_user
? 0: 1;
1532 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
,
1533 &vg_ui
.textbox
.cursor_pos
, +cursor_diff
, 1 );
1536 static void _ui_textbox_backspace(void){
1537 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1538 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char( -1 );
1539 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1541 if( vg_ui
.textbox
.callbacks
.change
){
1542 vg_ui
.textbox
.callbacks
.change( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1547 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){
1559 i32 start
= vg_ui
.textbox
.cursor_user
;
1561 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
){
1563 if( vg_ui
.textbuf
[start
-1] == '\n' )
1572 vg_ui
.textbox
.cursor_user
= start
;
1575 static void _ui_textbox_home(void){
1576 _ui_textbox_home_select();
1577 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1580 static void _ui_textbox_end_select(void){
1581 i32 end
= vg_ui
.textbox
.cursor_user
;
1583 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
){
1584 while( vg_ui
.textbuf
[end
] ){
1585 if( vg_ui
.textbuf
[end
] == '\n' )
1592 end
= VG_MIN( vg_ui
.textbox
.len
-1, strlen(vg_ui
.textbuf
) );
1594 vg_ui
.textbox
.cursor_user
= end
;
1597 static void _ui_textbox_end(void){
1598 _ui_textbox_end_select();
1599 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1602 static void _ui_textbox_select_all(void){
1603 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_user
, NULL
, 10000, 0);
1604 _ui_textbox_move_cursor( &vg_ui
.textbox
.cursor_pos
, NULL
, -10000, 0);
1607 static void _ui_textbox_cut(void){
1608 _ui_textbox_to_clipboard();
1609 vg_ui
.textbox
.cursor_user
= _ui_textbox_delete_char(0);
1610 vg_ui
.textbox
.cursor_pos
= vg_ui
.textbox
.cursor_user
;
1613 static void _ui_textbox_enter(void){
1614 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
1615 if( vg_ui
.textbox
.callbacks
.enter
)
1616 vg_ui
.textbox
.callbacks
.enter( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
1618 if( vg_ui
.focused_control_type
!= k_ui_control_textbox
) return;
1620 if( vg_ui
.textbox
.flags
& UI_TEXTBOX_MULTILINE
)
1621 _ui_textbox_put_char( '\n' );
1623 if( !(vg_ui
.textbox
.flags
& UI_TEXTBOX_AUTOFOCUS
) )
1630 * based on a visual character coordinate relative to the anchor of the textbox,
1631 * this works out the linear place in the buffer that coordinate maps to
1633 * input coordinates go in co[0], co[1], and the result index is in co[2]
1635 static void _ui_textbox_calc_index_from_grid( int co
[3], int wrap_length
){
1639 while( (c
= vg_ui
.textbuf
[i
[2]]) ){
1640 if( i
[1]==co
[1] && i
[0]>=co
[0] ) break;
1642 if( i
[0] >= wrap_length
){
1647 if( c
>= 32 && c
<= 126 ){
1651 else if( c
== '\n' ){
1654 if( i
[1] > co
[1] ) break;
1668 * based on the index specied in co[2], work out the visual character
1669 * coordinates and store them in co[0], co[1]
1671 static void _ui_textbox_index_calc_coords( int co
[3], int wrap_length
){
1678 while( (c
= vg_ui
.textbuf
[i
++]) ){
1679 if( i
> co
[2] ) break;
1680 if( co
[0] >= wrap_length
){
1684 if( c
>= 32 && c
<= 126 ) co
[0] ++;
1685 else if( c
== '\n' ){
1693 * calculate the number of characters remaining until either:
1694 * - the wrap_length limit is hit
1695 * - end of the line/string
1697 * index must be fully populated with visual X/Y, and linear index
1699 static int _ui_textbox_run_remaining( int index
[3], int wrap_length
){
1700 int i
=0, printed_chars
=0;
1702 while( (c
= vg_ui
.textbuf
[index
[2] + (i
++)]) ){
1703 if( index
[0]+i
>= wrap_length
) break;
1704 if( c
>= 32 && c
<= 126 ) printed_chars
++;
1705 else if( c
== '\n' ) break;
1708 return printed_chars
+1;
1711 static int ui_textbox( ui_rect inout_panel
, const char *label
,
1712 char *buf
, u32 len
, u32 lines
, u32 flags
,
1713 struct ui_textbox_callbacks
*callbacks
){
1714 assert( lines
> 0 );
1717 if( lines
> 1 ) flags
|= UI_TEXTBOX_MULTILINE
;
1720 ui_standard_widget( inout_panel
, rect
, lines
);
1723 ui_label( rect
, label
, 1, 0, rect
);
1725 int clickup
= ui_click_up(UI_MOUSE_LEFT
),
1726 clickdown
= ui_click_down(UI_MOUSE_LEFT
),
1727 click
= ui_clicking(UI_MOUSE_LEFT
) | clickup
,
1728 target
= ui_inside_rect( rect
, vg_ui
.mouse_click
) && click
,
1729 hover
= ui_inside_rect( rect
, vg_ui
.mouse
);
1731 /* allow instant transitions from textbox->textbox */
1732 if( (vg_ui
.focused_control_type
!= k_ui_control_none
) &&
1733 (vg_ui
.focused_control_type
!= k_ui_control_textbox
) ){
1739 flags
&= ~UI_TEXTBOX_AUTOFOCUS
;
1742 u32 col_base
= ui_colour( k_ui_bg
),
1743 col_highlight
= ui_colour( k_ui_fg
),
1744 col_cursor
= (0x00ffffff & ui_colour(k_ui_fg
))|0x7f000000;
1749 rect_copy( rect
, text_rect
);
1751 if( flags
& UI_TEXTBOX_MULTILINE
) text_rect
[3] = rect
[3]-16;
1752 else text_rect
[3] = vg_ui
.font
->line_height
;
1755 ui_rect_center( rect
, text_rect
);
1757 ui_px wrap_length
= 1024;
1759 if( flags
& UI_TEXTBOX_WRAP
)
1760 wrap_length
= text_rect
[2] / vg_ui
.font
->spacing
;
1763 vg_ui
.cursor
= k_ui_cursor_ibeam
;
1766 if( vg_ui
.focused_control_id
== buf
){
1767 ui_fill( rect
, col_base
);
1768 ui_ntext( text_rect
, buf
, wrap_length
, 1, k_ui_align_left
, 0 );
1770 if( !(flags
& UI_TEXTBOX_AUTOFOCUS
) && ((clickup
||clickdown
) && !target
)){
1774 vg_ui
.focused_control_hit
= 1;
1775 if( click
&& target
){
1777 (vg_ui
.mouse_click
[0] - text_rect
[0]) / vg_ui
.font
->spacing
,
1778 (vg_ui
.mouse_click
[1] - text_rect
[1]) / vg_ui
.font
->line_height
,
1782 (vg_ui
.mouse
[0] - text_rect
[0]) / vg_ui
.font
->spacing
,
1783 (vg_ui
.mouse
[1] - text_rect
[1]) / vg_ui
.font
->line_height
,
1787 if( flags
& UI_TEXTBOX_MULTILINE
){
1788 _ui_textbox_calc_index_from_grid( p0
, wrap_length
);
1789 _ui_textbox_calc_index_from_grid( p1
, wrap_length
);
1791 vg_ui
.textbox
.cursor_pos
= p0
[2];
1792 vg_ui
.textbox
.cursor_user
= p1
[2];
1795 int max
= strlen( buf
);
1796 vg_ui
.textbox
.cursor_pos
= VG_MAX( 0, VG_MIN( max
, p0
[0] )),
1797 vg_ui
.textbox
.cursor_user
= VG_MAX( 0, VG_MIN( max
, p1
[0] ));
1801 ui_outline( rect
, -2, vg_ui
.scheme
[ k_ui_orange
], 0 );
1805 int c0
= vg_ui
.textbox
.cursor_pos
,
1806 c1
= vg_ui
.textbox
.cursor_user
,
1807 start
= VG_MIN( c0
, c1
),
1808 end
= VG_MAX( c0
, c1
),
1811 if( flags
& (UI_TEXTBOX_WRAP
|UI_TEXTBOX_MULTILINE
) ){
1812 int pos
[3], remaining
= chars
;
1815 _ui_textbox_index_calc_coords( pos
, wrap_length
);
1818 cursor
[0] = text_rect
[0] + pos
[0]*vg_ui
.font
->spacing
-1;
1819 cursor
[1] = text_rect
[1] + pos
[1]*14;
1822 ui_fill( cursor
, col_cursor
);
1823 rect_copy( cursor
, vg_ui
.click_fader_end
);
1827 int run
= _ui_textbox_run_remaining( pos
, wrap_length
);
1828 run
= VG_MIN( run
, remaining
);
1830 cursor
[0] = text_rect
[0] + pos
[0]*vg_ui
.font
->spacing
-1;
1831 cursor
[1] = text_rect
[1] + pos
[1]*14;
1832 cursor
[2] = (float)(run
)*(float)vg_ui
.font
->spacing
;
1835 ui_fill( cursor
, col_cursor
);
1842 rect_copy( cursor
, vg_ui
.click_fader_end
);
1846 cursor
[0] = text_rect
[0] + start
*vg_ui
.font
->spacing
-1;
1847 cursor
[1] = text_rect
[1];
1854 cursor
[2] = (float)(chars
)*(float)vg_ui
.font
->spacing
;
1857 if( (vg_ui
.click_fade_opacity
<=0.0f
) &&
1858 ui_clip( rect
, cursor
, cursor
) ){
1859 ui_fill( cursor
, col_cursor
);
1862 rect_copy( cursor
, vg_ui
.click_fader_end
);
1869 if( click
|| (flags
& UI_TEXTBOX_AUTOFOCUS
) ){
1870 if( (target
&& hover
) || (flags
& UI_TEXTBOX_AUTOFOCUS
) ){
1873 ui_fill( rect
, col_highlight
);
1874 vg_ui
.ignore_input_frames
= 2;
1875 rect_copy( rect
, vg_ui
.click_fader
);
1876 rect_copy( rect
, vg_ui
.click_fader_end
);
1878 vg_ui
.click_fade_opacity
= 1.0f
;
1879 vg_ui
.textbuf
= buf
;
1880 vg_ui
.focused_control_hit
= 1;
1881 vg_ui
.focused_control_type
= k_ui_control_textbox
;
1882 vg_ui
.textbox
.len
= len
;
1883 vg_ui
.textbox
.flags
= flags
;
1884 vg_ui
.textbox
.cursor_pos
= 0;
1885 vg_ui
.textbox
.cursor_user
= 0;
1888 vg_ui
.textbox
.callbacks
= *callbacks
;
1891 vg_ui
.textbox
.callbacks
.change
= NULL
;
1892 vg_ui
.textbox
.callbacks
.down
= NULL
;
1893 vg_ui
.textbox
.callbacks
.up
= NULL
;
1894 vg_ui
.textbox
.callbacks
.enter
= NULL
;
1897 SDL_StartTextInput();
1901 ui_fill( rect
, col_base
);
1904 ui_outline( rect
, -1, col_highlight
, 0 );
1907 ui_ntext( text_rect
, buf
, wrap_length
, 1, k_ui_align_left
, 0 );
1913 * -----------------------------------------------------------------------------
1916 static void ui_tabs( ui_rect inout_panel
, ui_rect out_content_panel
,
1917 const char **titles
, u32 count
, i32
*page
){
1919 ui_standard_widget( inout_panel
, bar
, 1 );
1921 i32 cur_page
= *page
;
1923 f32 width
= (f32
)inout_panel
[2] / (f32
)count
;
1925 ui_px h
= (inout_panel
[1] + inout_panel
[3]) - (bar
[1]+bar
[3]);
1926 inout_panel
[1] = bar
[1]+bar
[3];
1929 ui_fill( inout_panel
, ui_colour( k_ui_bg
+2 ) );
1930 ui_outline( inout_panel
, 1, ui_colour( k_ui_bg
+5 ), 0 );
1932 rect_copy( inout_panel
, out_content_panel
);
1933 ui_rect_pad( out_content_panel
, (ui_px
[2]){ k_ui_padding
, k_ui_padding
} );
1936 for( i32 i
=0; i
<count
; i
++ ){
1938 bar
[0] + ((f32
)i
*width
),
1944 enum ui_scheme_colour colour
= k_ui_bg
+4;
1945 if( i
== cur_page
){
1947 ui_outline( button
, 1, ui_colour( k_ui_bg
+5 ),
1948 UI_TOP
|UI_LEFT
|UI_RIGHT
);
1952 if( ui_colourbutton_text( button
, titles
[i
], 1, colour
) == 1 )
1959 * -----------------------------------------------------------------------------
1961 static void ui_start_modal( const char *message
, u32 options
){
1962 vg_ui
.focused_control_type
= k_ui_control_modal
;
1963 vg_ui
.modal
.message
= message
;
1964 vg_ui
.modal
.callbacks
.close
= NULL
;
1965 vg_ui
.modal
.options
= options
;
1967 u32 type
= options
& UI_MODAL_TYPE_BITS
;
1968 if( type
== UI_MODAL_OK
) vg_info( message
);
1969 else if( type
== UI_MODAL_WARN
) vg_warn( message
);
1970 else if( type
== UI_MODAL_GOOD
) vg_success( message
);
1971 else if( type
== UI_MODAL_BAD
) vg_error( message
);
1976 * -----------------------------------------------------------------------------
1982 static void _ui_proc_key( SDL_Keysym ev
){
1983 if( vg_ui
.focused_control_type
!= k_ui_control_textbox
){
1987 struct textbox_mapping
{
1991 void (*handler
)(void);
1995 { 0, SDLK_LEFT
, _ui_textbox_left
},
1996 { KMOD_SHIFT
, SDLK_LEFT
, _ui_textbox_left_select
},
1997 { 0, SDLK_RIGHT
, _ui_textbox_right
},
1998 { KMOD_SHIFT
, SDLK_RIGHT
, _ui_textbox_right_select
},
1999 { 0, SDLK_DOWN
, _ui_textbox_down
},
2000 { 0, SDLK_UP
, _ui_textbox_up
},
2001 { 0, SDLK_BACKSPACE
, _ui_textbox_backspace
},
2002 { KMOD_SHIFT
, SDLK_BACKSPACE
, _ui_textbox_backspace
},
2003 { KMOD_CTRL
, SDLK_BACKSPACE
, _ui_textbox_backspace
},
2004 { 0, SDLK_DELETE
, _ui_textbox_delete
},
2005 { 0, SDLK_HOME
, _ui_textbox_home
},
2006 { KMOD_SHIFT
, SDLK_HOME
, _ui_textbox_home_select
},
2007 { 0, SDLK_END
, _ui_textbox_end
},
2008 { KMOD_SHIFT
, SDLK_END
, _ui_textbox_end_select
},
2009 { KMOD_CTRL
, SDLK_a
, _ui_textbox_select_all
},
2010 { KMOD_CTRL
, SDLK_c
, _ui_textbox_to_clipboard
},
2011 { KMOD_CTRL
, SDLK_x
, _ui_textbox_cut
},
2012 { KMOD_CTRL
, SDLK_v
, _ui_textbox_clipboard_paste
},
2013 { 0, SDLK_RETURN
, _ui_textbox_enter
},
2014 { 0, SDLK_ESCAPE
, ui_defocus_all
},
2019 if( ev
.mod
& KMOD_SHIFT
)
2022 if( ev
.mod
& KMOD_CTRL
)
2025 if( ev
.mod
& KMOD_ALT
)
2028 for( int i
=0; i
<vg_list_size( mappings
); i
++ ){
2029 struct textbox_mapping
*mapping
= &mappings
[i
];
2031 if( mapping
->key
== ev
.sym
){
2032 if( mapping
->mod
== 0 ){
2038 else if( (mod
& mapping
->mod
) == mapping
->mod
){
2047 * Callback for text entry mode
2049 static void ui_proc_utf8( const char *text
){
2050 if( vg_ui
.focused_control_type
== k_ui_control_textbox
){
2051 const char *ptr
= text
;
2054 if( *ptr
!= '`' ) _ui_textbox_put_char( *ptr
);
2058 if( vg_ui
.textbox
.callbacks
.change
){
2059 vg_ui
.textbox
.callbacks
.change( vg_ui
.textbuf
, vg_ui
.textbox
.len
);
2066 * -----------------------------------------------------------------------------
2069 static void ui_dev_colourview(void){
2070 ui_rect window
= {vg
.window_x
-256,0,256,vg
.window_y
}, swatch
;
2072 const char *names
[vg_list_size(vg_ui
.scheme
)] = {
2073 [k_ui_bg
] = "k_ui_bg", "k_ui_bg+1", "k_ui_bg+2", "k_ui_bg+3",
2074 "k_ui_bg+4", "k_ui_bg+5", "k_ui_bg+6", "k_ui_bg+7",
2076 [k_ui_fg
] = "k_ui_fg", "k_ui_fg+1", "k_ui_fg+2", "k_ui_fg+3",
2077 "k_ui_fg+4", "k_ui_fg+5", "k_ui_fg+6", "k_ui_fg+7",
2079 [k_ui_red
] = "k_ui_red", "k_ui_orange", "k_ui_yellow", "k_ui_green",
2080 "k_ui_aqua", "k_ui_blue", "k_ui_purple", "k_ui_gray",
2081 "k_ui_red+8","k_ui_orange+8","k_ui_yellow+8","k_ui_green+8",
2082 "k_ui_aqua+8","k_ui_blue+8","k_ui_purple+8","k_ui_gray+8" };
2085 ui_split_ratio( window
, k_ui_axis_v
, 0.5f
, 0, col
[0], col
[1] );
2087 for( int i
=0; i
<vg_list_size(vg_ui
.scheme
); i
++ ){
2088 int which
= (i
/8)%2;
2090 ui_split( col
[which
], k_ui_axis_h
, 24, 0, swatch
, col
[which
] );
2091 ui_fill( swatch
, ui_colour(i
) );
2094 ui_text(swatch
, names
[i
], 1, k_ui_align_middle_left
, ui_colourcont(i
));
2098 #endif /* VG_IMGUI_H */