* 1. layout is defined by subdividing
* 2. a parent node should never be resized by the content after creation
* 3. when the ui is in an interactive state, no controls should ever move
+ * 4. controls directly reference a memory location and use that as their
+ * unique id
+ * 5. a maximum of ONE control per memory location can be drawn at any given
+ * point.
*/
-
#ifndef VG_IMGUI_H
#define VG_IMGUI_H
/* Relative to cursor p0 */
enum ui_align
{ /* DC BA */
+ k_ui_align_lwr = 0xff,
k_ui_align_left = 0x0000| 0x00,
k_ui_align_right = 0x0000| 0x01,
k_ui_align_center = 0x0000| 0x02,
((STDHEX&0x0000ff00) ) |\
((STDHEX&0x00ff0000)>>16)
+#define UI_TEXTBOX_MULTILINE 0x1
+#define UI_TEXTBOX_WRAP 0x2
+#define UI_TEXTBOX_AUTOFOCUS 0x4
+#define UI_MOUSE_LEFT (SDL_BUTTON(SDL_BUTTON_LEFT))
+#define UI_MOUSE_RIGHT (SDL_BUTTON(SDL_BUTTON_RIGHT))
+#define UI_MOUSE_MIDDLE (SDL_BUTTON(SDL_BUTTON_MIDDLE))
+
struct{
struct ui_vert *vertex_buffer;
u16 *indice_buffer;
cur_vert, cur_indice,
vert_start, indice_start;
+ union {
void *focused_control_id; /* uses the memory location of various locking
controls as an id */
+ char *textbuf;
+ struct ui_dropdown_value{
+ i32 index, value;
+ }
+ *ptr_dropdown;
+ };
+
u32 focused_control_hit;
enum ui_control_type{
k_ui_control_none,
k_ui_control_textbox,
+ k_ui_control_dropdown
}
focused_control_type;
+
+ union{
+ struct ui_textbuf{
+ int cursor_user, cursor_pos;
+ u32 len;
+ u32 flags;
+
+ struct ui_textbox_callbacks{
+ void (*enter)( char *, u32 ),
+ (*up)( char *, u32 ),
+ (*down)( char *, u32 ),
+ (*change)( char *, u32 );
+ }
+ callbacks;
+ }
+ textbox;
+
+ struct ui_dropdown{
+ struct ui_dropdown_opt{
+ const char *alias;
+ i32 value;
+ }
+ *options;
+ u32 option_count;
+ ui_rect rect;
+ }
+ dropdown;
+ };
GLuint tex_glyphs, vao, vbo, ebo;
ui_px mouse[2], mouse_click[2];
u32 mouse_state[2];
u32 ignore_input_frames;
+ int wants_mouse;
- ui_rect click_fader;
+ ui_rect click_fader, click_fader_end;
float click_fade_opacity;
ui_scheme scheme;
+
+ enum ui_cursor{
+ k_ui_cursor_default,
+ k_ui_cursor_ibeam,
+ k_ui_cursor_hand,
+ k_ui_cursor_max
+ }
+ cursor;
+
+ SDL_Cursor *cursor_map[ k_ui_cursor_max ];
}
static vg_ui = {
.scheme = {
"void main()"
"{"
"vec4 colour = texture( uTexImage, aTexCoords );"
-
- /* wtf is this?? */
-#if 0
- "float value = dot(vec4(1.0),colour)*0.25;"
-
- "vec3 col = vec3(pow(cos(value*3.14159265*2.0)*0.5+0.5,0.5))"
- "* vec3(step(value,0.5),0.3,step(1.0-value,0.5));"
- "FragColor = vec4( col*4.0, 1.0 );"
-#endif
-
"FragColor = colour;"
"}"
}
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
+
+ /*
+ * Cursors
+ * ---------------------------------------------------------------
+ */
+
+ vg_ui.cursor_map[ k_ui_cursor_default ] =
+ SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_ARROW );
+ vg_ui.cursor_map[ k_ui_cursor_hand ] =
+ SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_HAND );
+ vg_ui.cursor_map[ k_ui_cursor_ibeam ] =
+ SDL_CreateSystemCursor( SDL_SYSTEM_CURSOR_IBEAM );
}
enum ui_shader {
glBufferSubData( GL_ELEMENT_ARRAY_BUFFER, indice_offset, indice_size,
vg_ui.indice_buffer+vg_ui.indice_start );
+ glDisable( GL_DEPTH_TEST );
glEnable( GL_BLEND );
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
glBlendEquation( GL_FUNC_ADD );
+ glDisable( GL_CULL_FACE );
m3x3f view = M3X3_IDENTITY;
m3x3_translate( view, (v3f){ -1.0f, 1.0f, 0.0f } );
vg_ui.cur_vert += 8;
}
-static void ui_split_px( ui_rect rect,
- enum ui_axis other, ui_px width, ui_px pad,
- ui_rect l, ui_rect r )
+static void ui_split( ui_rect rect,
+ enum ui_axis other, ui_px width, ui_px gap,
+ ui_rect l, ui_rect r )
{
enum ui_axis dir = other ^ 0x1;
+ if( width < 0 ) width = rect[ 2+dir ] + width;
+
ui_rect temp;
rect_copy( rect, temp );
- l[ dir ] = temp[ dir ] + pad;
- r[ dir ] = temp[ dir ] + width + (pad/2);
- l[ other ] = temp[ other ] + pad;
- r[ other ] = temp[ other ] + pad;
- l[ 2+dir ] = width - ((3*pad)/2);
- r[ 2+dir ] = temp[ 2+dir ] - width - ((3*pad)/2);
- l[ 2+other ] = temp[ 2+other ] - pad*2;
- r[ 2+other ] = temp[ 2+other ] - pad*2;
+ l[ dir ] = temp[ dir ];
+ r[ dir ] = temp[ dir ] + width + (gap/2);
+ l[ other ] = temp[ other ];
+ r[ other ] = temp[ other ];
+ l[ 2+dir ] = width - (gap/2);
+ r[ 2+dir ] = temp[ 2+dir ] - width - (gap/2);
+ l[ 2+other ] = temp[ 2+other ];
+ r[ 2+other ] = temp[ 2+other ];
}
+static ui_px ui_text_line_width( const char *str );
+
static void ui_rect_center( ui_rect parent, ui_rect rect )
{
rect[0] = parent[0] + (parent[2]-rect[2])/2;
}
static void ui_split_ratio( ui_rect rect, enum ui_axis dir, float ratio,
- ui_px pad, ui_rect l, ui_rect r )
+ ui_px gap, ui_rect l, ui_rect r )
{
ui_px width = (float)rect[ 2+(dir^0x1) ] * ratio;
- ui_split_px( rect, dir, width, pad, l, r );
+ ui_split( rect, dir, width, gap, l, r );
}
-static void ui_rect_pad( ui_rect rect, ui_px pad )
+static void ui_rect_pad( ui_rect rect, ui_px pad[2] )
{
- rect[0] += pad;
- rect[1] += pad;
- rect[2] -= pad*2;
- rect[3] -= pad*2;
+ rect[0] += pad[0];
+ rect[1] += pad[1];
+ rect[2] -= pad[0]*2;
+ rect[3] -= pad[1]*2;
}
static ui_px ui_text_line_width( const char *str )
{
int length = 0;
const char *_c = str;
- char c;
+ u8 c;
while( (c = *(_c ++)) ){
- if( c >= 32 && c <= 126 )
- length ++;
- else if( c == '\n' )
- break;
+ if( c >= 32 ) length ++;
+ else if( c == '\n' ) break;
}
return length * 8;
{
int height = 1;
const char *_c = str;
- char c;
+ u8 c;
while( (c = *(_c ++)) ){
if( c == '\n' ) height ++;
static ui_px ui_text_aligned_x( const char *str, ui_rect rect, ui_px scale,
enum ui_align align )
{
- if( align == k_ui_align_left ){
+ enum ui_align lwr = k_ui_align_lwr & align;
+ if( lwr == k_ui_align_left ){
return rect[0];
}
else{
ui_px width = ui_text_line_width( str ) * scale;
- if( align == k_ui_align_right )
+ if( lwr == k_ui_align_right )
return rect[0] + rect[2]-width;
else
return rect[0] + (rect[2]-width)/2;
{
if( co[0] >= rect[0] &&
co[1] >= rect[1] &&
- co[0] <= rect[0]+rect[2] &&
- co[1] <= rect[1]+rect[3] )
+ co[0] < rect[0]+rect[2] &&
+ co[1] < rect[1]+rect[3] )
{
return 1;
}
return 0;
}
-static int ui_click_down(void)
+static int ui_click_down( u32 mask )
{
if( vg_ui.ignore_input_frames ) return 0;
-
- if( (vg_ui.mouse_state[0] & SDL_BUTTON(SDL_BUTTON_LEFT)) &&
- !(vg_ui.mouse_state[1] & SDL_BUTTON(SDL_BUTTON_LEFT)) )
+ if( (vg_ui.mouse_state[0] & mask) &&
+ !(vg_ui.mouse_state[1] & mask) )
return 1;
else
return 0;
}
-static int ui_clicking(void)
+static int ui_clicking( u32 mask )
{
if( vg_ui.ignore_input_frames ) return 0;
- return vg_ui.mouse_state[0] & SDL_BUTTON(SDL_BUTTON_LEFT);
+ return vg_ui.mouse_state[0] & mask;
}
-static int ui_click_up(void)
+static int ui_click_up( u32 mask )
{
if( vg_ui.ignore_input_frames ) return 0;
- if( (vg_ui.mouse_state[1] & SDL_BUTTON(SDL_BUTTON_LEFT)) &&
- !(vg_ui.mouse_state[0] & SDL_BUTTON(SDL_BUTTON_LEFT)) )
+ if( (vg_ui.mouse_state[1] & mask) &&
+ !(vg_ui.mouse_state[0] & mask) )
return 1;
else
return 0;
vg_ui.vert_start = 0;
vg_ui.indice_start = 0;
vg_ui.focused_control_hit = 0;
+ vg_ui.cursor = k_ui_cursor_default;
+ vg_ui.wants_mouse = 0;
if( vg_ui.ignore_input_frames ){
vg_ui.ignore_input_frames --;
return;
}
- if( ui_click_down() ){
+ if( ui_click_down(UI_MOUSE_LEFT)||ui_click_down(UI_MOUSE_MIDDLE) ){
vg_ui.mouse_click[0] = vg_ui.mouse[0];
vg_ui.mouse_click[1] = vg_ui.mouse[1];
}
return vg_ui.scheme[ id ];
}
-static void ui_text( ui_rect rect, const char *str, ui_px scale,
- enum ui_align align )
+/* get an appropriately contrasting colour given the base */
+static u32 ui_colourcont( enum ui_scheme_colour id )
+{
+ if ( id < k_ui_bg+6 ) return ui_colour( k_ui_fg );
+ else if( id < k_ui_fg ) return ui_colour( k_ui_bg+1 );
+ else if( id < k_ui_hue ) return ui_colour( k_ui_bg+3 );
+ else if( id < k_ui_red+k_ui_brighter ) return ui_colour( k_ui_fg );
+ else return ui_colour( k_ui_fg+1 );
+}
+
+static void ui_hex_to_norm( u32 hex, v4f norm )
+{
+ norm[0] = ((hex ) & 0xff);
+ norm[1] = ((hex>>8 ) & 0xff);
+ norm[2] = ((hex>>16) & 0xff);
+ norm[3] = ((hex>>24) & 0xff);
+ v4_muls( norm, 1.0f/255.0f, norm );
+}
+
+static u32 ui_ntext( ui_rect rect, const char *str, u32 len, ui_px scale,
+ enum ui_align align, u32 colour )
{
ui_rect text_cursor;
- u32 colour = ui_colour( k_ui_fg ) & 0x00ffffff;
+ if( colour == 0 ) colour = ui_colour( k_ui_fg );
+
+ colour &= 0x00ffffff;
const char *_c = str;
u8 c;
text_cursor[2] = 8*scale;
text_cursor[3] = 14*scale;
+ u32 printed_chars = 0;
+
if( align & (k_ui_align_middle|k_ui_align_bottom) ){
ui_px height = ui_text_string_height( str ) * scale;
}
while( (c = *(_c ++)) ){
+ if( printed_chars >= len ){
+ printed_chars = 0;
+ text_cursor[1] += 14*scale;
+ text_cursor[0] = ui_text_aligned_x( _c, rect, scale, align );
+ text_cursor[0] -= UI_GLYPH_SPACING_X*scale;
+
+ u8 glyph_base[2];
+ u8 glyph_index = '\x90';
+ glyph_base[0] = glyph_index & 0xf;
+ glyph_base[1] = (glyph_index-glyph_base[0])>>4;
+ glyph_base[0] *= 8;
+ glyph_base[1] *= 8;
+
+ ui_fill_rect( text_cursor, 0x00ffffff, (ui_px[4])
+ {
+ glyph_base[0]+2,
+ glyph_base[1]+1,
+ glyph_base[0]+6,
+ glyph_base[1]+8
+ });
+
+ text_cursor[0] += UI_GLYPH_SPACING_X*scale;
+ }
+
if( c == '\n' ){
text_cursor[1] += 14*scale;
text_cursor[0] = ui_text_aligned_x( _c, rect, scale, align );
+ printed_chars = 0;
continue;
}
else if( c >= 33 ){
u8 glyph_index = c;
glyph_base[0] = glyph_index & 0xf;
glyph_base[1] = (glyph_index-glyph_base[0])>>4;
-
glyph_base[0] *= 8;
glyph_base[1] *= 8;
case '3'|'4'<<8: colour = ui_colour( k_ui_blue ); break;
case '3'|'5'<<8: colour = ui_colour( k_ui_purple ); break;
case '3'|'6'<<8: colour = ui_colour( k_ui_aqua ); break;
- case '3'|'7'<<8: colour = ui_colour( 0xffffffff ); break;
+ case '3'|'7'<<8: colour = 0xffffffff; break;
}
colour &= 0x00ffffff;
}
else if( c == '\t' ){
text_cursor[0] += UI_GLYPH_SPACING_X*scale*4;
+ printed_chars += 4;
continue;
}
text_cursor[0] += UI_GLYPH_SPACING_X*scale;
+ printed_chars ++;
}
+
+ return printed_chars;
+}
+
+static void ui_text( ui_rect rect, const char *str, ui_px scale,
+ enum ui_align align, u32 colour )
+{
+ ui_ntext( rect, str, 1024, scale, align, colour );
}
static void ui_image( ui_rect rect, GLuint image )
{
ui_flush( k_ui_shader_colour );
-
glActiveTexture( GL_TEXTURE0 );
glBindTexture( GL_TEXTURE_2D, image );
- ui_fill_rect( rect, 0xffffffff, (ui_px[4]){ 0,0, 255,255 } );
+ ui_fill_rect( rect, 0xffffffff, (ui_px[4]){ 0,128, 128, 0 } );
ui_flush( k_ui_shader_image );
}
vg_ui.focused_control_type = k_ui_control_none;
}
-static int ui_button( ui_rect rect, enum ui_scheme_colour colour )
+static int ui_colourbutton( ui_rect rect, enum ui_scheme_colour colour )
{
- int clickup= ui_click_up(),
- click = ui_clicking() | clickup,
+ int clickup= ui_click_up(UI_MOUSE_LEFT),
+ click = ui_clicking(UI_MOUSE_LEFT) | clickup,
target = ui_inside_rect( rect, vg_ui.mouse_click ) && click,
hover = ui_inside_rect( rect, vg_ui.mouse );
col_highlight = vg_ui.scheme[ k_ui_fg ],
col_hover = vg_ui.scheme[ colour + k_ui_brighter ];
+ if( vg_ui.focused_control_type != k_ui_control_none ){
+ clickup = 0;
+ click = 0;
+ target = 0;
+ hover = 0;
+ }
+
+ if( hover ){
+ vg_ui.cursor = k_ui_cursor_hand;
+ }
+
if( click ){
if( target ){
if( hover ){
ui_fill( rect, col_highlight );
vg_ui.ignore_input_frames = 2;
rect_copy( rect, vg_ui.click_fader );
+
+ rect_copy( rect, vg_ui.click_fader_end );
+ vg_ui.click_fader_end[3] = 0;
+ ui_rect_center( rect, vg_ui.click_fader_end );
+
vg_ui.click_fade_opacity = 1.0f;
ui_defocus_all();
return 1;
}
}
-static int ui_button_text( ui_rect rect, const char *string, ui_px scale,
- enum ui_scheme_colour colour )
+static int ui_colourbutton_text( ui_rect rect, const char *string, ui_px scale,
+ enum ui_scheme_colour colour )
{
- int result = ui_button( rect, colour );
+ int result = ui_colourbutton( rect, colour );
ui_rect t = { 0,0, ui_text_line_width( string )*scale, 14*scale };
ui_rect_center( rect, t );
- ui_text( t, string, scale, k_ui_align_left );
+ ui_text( t, string, scale, k_ui_align_left, ui_colourcont(colour) );
return result;
}
+static int ui_button_text( ui_rect rect, const char *string, ui_px scale )
+{
+ return ui_colourbutton_text( rect, string, scale, k_ui_bg+4 );
+}
+
+static void ui_enum_post(void);
static void ui_postrender(void)
{
if( vg_ui.click_fade_opacity > 0.0f ){
-
float scale = vg_ui.click_fade_opacity;
scale = vg_maxf( 1.0f/255.0f, scale*scale );
- vg_ui.click_fade_opacity -= vg.time_frame_delta * 1.8f;
- u32 colour = v4f_u32_colour( (v4f){ 1.0f,1.0f,1.0f, scale } );
+ vg_ui.click_fade_opacity -= vg.time_frame_delta * 3.8f;
+ u32 colour = (0x00ffffff & ui_colour(k_ui_fg))|0x7f000000;
+
+ v4f begin, end, dest;
+ for( int i=0; i<4; i++ ){
+ begin[i] = vg_ui.click_fader[i];
+ end[i] = vg_ui.click_fader_end[i]+1;
+ }
+
+ v4_lerp( end, begin, scale, dest );
ui_rect rect;
- rect[3] = (float)(vg_ui.click_fader[3]) * scale;
- rect[2] = vg_ui.click_fader[2];
- ui_rect_center( vg_ui.click_fader, rect );
+ for( int i=0; i<4; i++ ){
+ rect[i] = dest[i];
+ }
ui_fill( rect, colour );
}
+
+ if( vg_ui.focused_control_type == k_ui_control_dropdown ){
+ ui_enum_post();
+ }
+
ui_flush( k_ui_shader_colour );
if( !vg_ui.focused_control_hit ){
ui_defocus_all();
}
+
+ if( vg_ui.wants_mouse ){
+ SDL_SetWindowGrab( vg.window, SDL_FALSE );
+ SDL_SetRelativeMouseMode( SDL_FALSE );
+ }
+ else{
+ SDL_SetWindowGrab( vg.window, SDL_TRUE );
+ SDL_SetRelativeMouseMode( SDL_TRUE );
+ }
+
+ SDL_SetCursor( vg_ui.cursor_map[ vg_ui.cursor ] );
+ SDL_ShowCursor(1);
+}
+
+static void ui_dev_colourview(void)
+{
+ ui_rect window = {vg.window_x-256,0,256,vg.window_y}, swatch;
+
+ const char *names[vg_list_size(vg_ui.scheme)] = {
+ [k_ui_bg] = "k_ui_bg", "k_ui_bg+1", "k_ui_bg+2", "k_ui_bg+3",
+ "k_ui_bg+4", "k_ui_bg+5", "k_ui_bg+6", "k_ui_bg+7",
+
+ [k_ui_fg] = "k_ui_fg", "k_ui_fg+1", "k_ui_fg+2", "k_ui_fg+3",
+ "k_ui_fg+4", "k_ui_fg+5", "k_ui_fg+6", "k_ui_fg+7",
+
+ [k_ui_red] = "k_ui_red", "k_ui_orange", "k_ui_yellow", "k_ui_green",
+ "k_ui_aqua", "k_ui_blue", "k_ui_purple", "k_ui_gray",
+ "k_ui_red+8","k_ui_orange+8","k_ui_yellow+8","k_ui_green+8",
+ "k_ui_aqua+8","k_ui_blue+8","k_ui_purple+8","k_ui_gray+8" };
+
+ ui_rect col[2];
+ ui_split_ratio( window, k_ui_axis_v, 0.5f, 0, col[0], col[1] );
+
+ for( int i=0; i<vg_list_size(vg_ui.scheme); i++ ){
+ int which = (i/8)%2;
+
+ ui_split( col[which], k_ui_axis_h, 24, 0, swatch, col[which] );
+ ui_fill( swatch, ui_colour(i) );
+
+ if( names[i] )
+ ui_text(swatch, names[i], 1, k_ui_align_middle_left, ui_colourcont(i));
+ }
+}
+
+/*
+ * checkbox
+ * -----------------------------------------------------------------------------
+ */
+
+static int ui_checkbox( ui_rect rect, const char *str_label, int *data )
+{
+ ui_rect label, box;
+ ui_split( rect, k_ui_axis_v, -rect[3], 0, label, box );
+ ui_text( label, str_label, 1, k_ui_align_middle_left, 0 );
+
+ int changed = ui_colourbutton( box, k_ui_bg );
+ if( changed )
+ *data = (*data) ^ 0x1;
+
+ if( *data ){
+ ui_rect_pad( box, (ui_px[2]){4,4} );
+ ui_fill( box, ui_colour( k_ui_orange ) );
+ }
+
+ return changed;
+}
+
+/*
+ * Dropdown / Enum
+ * -----------------------------------------------------------------------------
+ */
+
+/*
+ * unfortunately no return value since we only find out that event in the
+ * postrender step.
+ */
+static void ui_enum( ui_rect rect, const char *str_label,
+ struct ui_dropdown_opt *options, u32 len,
+ struct ui_dropdown_value *value )
+{
+ ui_rect label, box;
+ ui_split( rect, k_ui_axis_v, ui_text_line_width( str_label ) + 8,
+ 0, label, box );
+ ui_text( label, str_label, 1, k_ui_align_middle_left, 0 );
+
+ if( ui_button_text( box, options[ value->index ].alias, 1 ) ){
+ vg_ui.focused_control_type = k_ui_control_dropdown;
+ vg_ui.ptr_dropdown = value;
+ vg_ui.dropdown.option_count = len;
+ vg_ui.dropdown.options = options;
+ rect_copy( box, vg_ui.dropdown.rect );
+ }
+}
+
+static void ui_enum_post(void)
+{
+ ui_rect drawer;
+ rect_copy( vg_ui.dropdown.rect, drawer );
+ drawer[3] *= vg_ui.dropdown.option_count;
+
+ int close = 0;
+ int clickany= ui_click_up(UI_MOUSE_LEFT|UI_MOUSE_RIGHT|UI_MOUSE_MIDDLE),
+ hover = ui_inside_rect( drawer, vg_ui.mouse );
+
+ if( clickany && !hover ){
+ return;
+ }
+
+ /* HACK */
+ vg_ui.focused_control_type = k_ui_control_none;
+ struct ui_dropdown_value *value = vg_ui.ptr_dropdown;
+
+ for( u32 i=0; i<vg_ui.dropdown.option_count; i++ ){
+ ui_rect button;
+ ui_split( drawer, k_ui_axis_h, vg_ui.dropdown.rect[3], 0, button,drawer );
+
+ enum ui_scheme_colour colour = k_ui_bg+3;
+ if( i == value->index ) colour = k_ui_orange;
+
+ if( ui_colourbutton_text( button, vg_ui.dropdown.options[i].alias, 1,
+ colour ) ){
+ value->index = i;
+ value->value = vg_ui.dropdown.options[i].value;
+ close = 1;
+ }
+ }
+
+ /* HACK */
+ vg_ui.focused_control_type = k_ui_control_dropdown;
+
+ if( !close )
+ vg_ui.focused_control_hit = 1;
}
-static int ui_textbox( ui_rect rect, char *buf, u32 len )
+/*
+ * Textbox chaos
+ * -----------------------------------------------------------------------------
+ */
+
+static void _ui_textbox_make_selection( int *start, int *end )
{
- int clickup= ui_click_up(),
- click = ui_clicking() | clickup,
+ *start = VG_MIN( vg_ui.textbox.cursor_pos, vg_ui.textbox.cursor_user );
+ *end = VG_MAX( vg_ui.textbox.cursor_pos, vg_ui.textbox.cursor_user );
+}
+
+static void _ui_textbox_move_cursor( int *cursor0, int *cursor1,
+ int dir, int snap_together )
+{
+ *cursor0 = VG_MAX( 0, vg_ui.textbox.cursor_user + dir );
+ *cursor0 =
+ VG_MIN(
+ VG_MIN( vg_ui.textbox.len-1, strlen( vg_ui.textbuf )),
+ *cursor0 );
+
+ if( snap_together )
+ *cursor1 = *cursor0;
+}
+
+static int _ui_textbox_makeroom( int datastart, int length )
+{
+ int move_to = VG_MIN( datastart+length, vg_ui.textbox.len-1 );
+ int move_amount = strlen( vg_ui.textbuf )-datastart;
+ int move_end = VG_MIN( move_to+move_amount, vg_ui.textbox.len-1 );
+ move_amount = move_end-move_to;
+
+ if( move_amount )
+ memmove( &vg_ui.textbuf[ move_to ],
+ &vg_ui.textbuf[ datastart ],
+ move_end-move_to );
+
+ vg_ui.textbuf[ move_end ] = '\0';
+
+ return VG_MIN( length, vg_ui.textbox.len-datastart-1 );
+}
+
+static int _ui_textbox_delete_char( int direction )
+{
+ int start, end;
+ _ui_textbox_make_selection( &start, &end );
+
+ /* There is no selection */
+ if( !(end-start) ){
+ if( direction == 1 ) end = VG_MIN( end+1, strlen( vg_ui.textbuf ) );
+ else if( direction == -1 ) start = VG_MAX( start-1, 0 );
+ }
+
+ /* Still no selction, no need to do anything */
+ if( !(end-start) )
+ return start;
+
+ /* Copy the end->terminator to start */
+ int remaining_length = strlen( vg_ui.textbuf )+1-end;
+ memmove( &vg_ui.textbuf[ start ],
+ &vg_ui.textbuf[ end ],
+ remaining_length );
+ return start;
+}
+
+static void _ui_textbox_to_clipboard(void)
+{
+ int start, end;
+ _ui_textbox_make_selection( &start, &end );
+ char buffer[512];
+
+ if( end-start ){
+ memcpy( buffer, &vg_ui.textbuf[ start ], end-start );
+ buffer[ end-start ] = 0x00;
+ SDL_SetClipboardText( buffer );
+ }
+}
+
+static void _ui_textbox_clipboard_paste(void)
+{
+ if( !SDL_HasClipboardText() )
+ return;
+
+ char *text = SDL_GetClipboardText();
+
+ if( !text )
+ return;
+
+ int datastart = _ui_textbox_delete_char( 0 );
+ int length = strlen( text );
+ int cpylength = _ui_textbox_makeroom( datastart, length );
+
+ memcpy( vg_ui.textbuf + datastart, text, cpylength);
+ _ui_textbox_move_cursor( &vg_ui.textbox.cursor_user,
+ &vg_ui.textbox.cursor_pos, cpylength, 1 );
+ SDL_free( text );
+}
+
+static void _ui_textbox_put_char( char c )
+{
+ vg_ui.textbox.cursor_user = _ui_textbox_delete_char(0);
+
+ if( _ui_textbox_makeroom( vg_ui.textbox.cursor_user, 1 ) )
+ vg_ui.textbuf[ vg_ui.textbox.cursor_user ] = c;
+
+ _ui_textbox_move_cursor( &vg_ui.textbox.cursor_user,
+ &vg_ui.textbox.cursor_pos, 1, 1 );
+}
+
+/* Receed secondary cursor */
+static void _ui_textbox_left_select(void)
+{
+ _ui_textbox_move_cursor( &vg_ui.textbox.cursor_user, NULL, -1, 0 );
+}
+
+/* Match and receed both cursors */
+static void _ui_textbox_left(void)
+{
+ int cursor_diff = vg_ui.textbox.cursor_pos - vg_ui.textbox.cursor_user? 0: 1;
+
+ _ui_textbox_move_cursor( &vg_ui.textbox.cursor_user,
+ &vg_ui.textbox.cursor_pos, -cursor_diff, 1 );
+}
+
+static void _ui_textbox_up(void)
+{
+ if( vg_ui.textbox.flags & UI_TEXTBOX_MULTILINE ){
+ int line_begin = vg_ui.textbox.cursor_user;
+
+ while( line_begin ){
+ if( vg_ui.textbuf[ line_begin-1 ] == '\n' ){
+ break;
+ }
+
+ line_begin --;
+ }
+
+ if( line_begin ){
+ int line_above_begin = line_begin-1;
+
+ while( line_above_begin ){
+ if( vg_ui.textbuf[ line_above_begin-1 ] == '\n' ){
+ break;
+ }
+
+ line_above_begin --;
+ }
+
+ int offset = vg_ui.textbox.cursor_user - line_begin,
+ line_length_above = line_begin - line_above_begin -1;
+
+ offset = VG_MIN( line_length_above, offset );
+
+ vg_ui.textbox.cursor_user = line_above_begin+offset;
+ vg_ui.textbox.cursor_pos = line_above_begin+offset;
+ }
+ else{
+ vg_ui.textbox.cursor_user = line_begin;
+ vg_ui.textbox.cursor_pos = line_begin;
+ }
+ }
+ else{
+ if( vg_ui.textbox.callbacks.up ){
+ vg_ui.textbox.callbacks.up( vg_ui.textbuf, vg_ui.textbox.len );
+ }
+ }
+}
+
+static void _ui_textbox_down(void)
+{
+ if( vg_ui.textbox.flags & UI_TEXTBOX_MULTILINE ){
+ int line_begin = vg_ui.textbox.cursor_user;
+
+ while( line_begin ){
+ if( vg_ui.textbuf[ line_begin-1 ] == '\n' ){
+ break;
+ }
+
+ line_begin --;
+ }
+
+ int line_below_begin = vg_ui.textbox.cursor_user;
+
+ while(1){
+ if( vg_ui.textbuf[ line_below_begin ] == '\0' ){
+ vg_ui.textbox.cursor_user = line_below_begin;
+ vg_ui.textbox.cursor_pos = line_below_begin;
+ return;
+ }
+
+ if( vg_ui.textbuf[ line_below_begin ] == '\n' ){
+ line_below_begin ++;
+ break;
+ }
+
+ line_below_begin ++;
+ }
+
+ int line_below_end = line_below_begin;
+ while(1){
+ if( vg_ui.textbuf[ line_below_end ] == '\0' ||
+ vg_ui.textbuf[ line_below_end ] == '\n' ){
+ line_below_end ++;
+ break;
+ }
+ line_below_end ++;
+ }
+
+ int offset = vg_ui.textbox.cursor_user - line_begin,
+ line_length_below = line_below_end - line_below_begin -1;
+
+ offset = VG_MIN( line_length_below, offset );
+
+ vg_ui.textbox.cursor_user = line_below_begin+offset;
+ vg_ui.textbox.cursor_pos = line_below_begin+offset;
+ }
+ else{
+ if( vg_ui.textbox.callbacks.down ){
+ vg_ui.textbox.callbacks.down( vg_ui.textbuf, vg_ui.textbox.len );
+ }
+ }
+}
+
+static void _ui_textbox_right_select(void)
+{
+ _ui_textbox_move_cursor( &vg_ui.textbox.cursor_user, NULL, 1, 0 );
+}
+
+static void _ui_textbox_right(void)
+{
+ int cursor_diff = vg_ui.textbox.cursor_pos - vg_ui.textbox.cursor_user? 0: 1;
+
+ _ui_textbox_move_cursor( &vg_ui.textbox.cursor_user,
+ &vg_ui.textbox.cursor_pos, +cursor_diff, 1 );
+}
+
+static void _ui_textbox_backspace(void)
+{
+ if( vg_ui.focused_control_type == k_ui_control_textbox ){
+ vg_ui.textbox.cursor_user = _ui_textbox_delete_char( -1 );
+ vg_ui.textbox.cursor_pos = vg_ui.textbox.cursor_user;
+
+ if( vg_ui.textbox.callbacks.change ){
+ vg_ui.textbox.callbacks.change( vg_ui.textbuf, vg_ui.textbox.len );
+ }
+ }
+}
+
+static void _ui_textbox_delete(void)
+{
+ if( vg_ui.focused_control_type == k_ui_control_textbox ){
+ vg_ui.textbox.cursor_user = _ui_textbox_delete_char( 1 );
+ vg_ui.textbox.cursor_pos = vg_ui.textbox.cursor_user;
+
+ if( vg_ui.textbox.callbacks.change ){
+ vg_ui.textbox.callbacks.change( vg_ui.textbuf, vg_ui.textbox.len );
+ }
+ }
+}
+
+static void _ui_textbox_home_select(void)
+{
+ _ui_textbox_move_cursor( &vg_ui.textbox.cursor_user, NULL, -10000, 0 );
+}
+
+static void _ui_textbox_home(void)
+{
+ _ui_textbox_move_cursor( &vg_ui.textbox.cursor_user,
+ &vg_ui.textbox.cursor_pos, -10000, 1 );
+}
+
+static void _ui_textbox_end_select(void)
+{
+ _ui_textbox_move_cursor( &vg_ui.textbox.cursor_user, NULL, 10000, 0 );
+}
+
+static void _ui_textbox_end(void)
+{
+ _ui_textbox_move_cursor( &vg_ui.textbox.cursor_user,
+ &vg_ui.textbox.cursor_pos,
+ vg_ui.textbox.len-1, 1 );
+}
+
+static void _ui_textbox_select_all(void)
+{
+ _ui_textbox_move_cursor( &vg_ui.textbox.cursor_user, NULL, 10000, 0);
+ _ui_textbox_move_cursor( &vg_ui.textbox.cursor_pos, NULL, -10000, 0);
+}
+
+static void _ui_textbox_cut(void)
+{
+ _ui_textbox_to_clipboard();
+ vg_ui.textbox.cursor_user = _ui_textbox_delete_char(0);
+ vg_ui.textbox.cursor_pos = vg_ui.textbox.cursor_user;
+}
+
+static void _ui_textbox_enter(void)
+{
+ if( vg_ui.focused_control_type == k_ui_control_textbox ){
+ if( vg_ui.textbox.flags & UI_TEXTBOX_MULTILINE ){
+ _ui_textbox_put_char( '\n' );
+ }
+ else{
+ if( !(vg_ui.textbox.flags & UI_TEXTBOX_AUTOFOCUS ) )
+ ui_defocus_all();
+ }
+
+ if( vg_ui.textbox.callbacks.enter ){
+ vg_ui.textbox.callbacks.enter( vg_ui.textbuf, vg_ui.textbox.len );
+ }
+ }
+}
+
+/*
+ * based on a visual character coordinate relative to the anchor of the textbox,
+ * this works out the linear place in the buffer that coordinate maps to
+ *
+ * input coordinates go in co[0], co[1], and the result index is in co[2]
+ */
+static void _ui_textbox_calc_index_from_grid( int co[3], int wrap_length )
+{
+ int i[3] = {0,0,0};
+
+ char c;
+ while( (c = vg_ui.textbuf[i[2]]) ){
+ if( i[1]==co[1] && i[0]>=co[0] ) break;
+
+ if( i[0] >= wrap_length ){
+ i[1] ++;
+ i[0] = 0;
+ }
+
+ if( c >= 32 && c <= 126 ){
+ i[0] ++;
+ i[2] ++;
+ }
+ else if( c == '\n' ){
+ i[1] ++;
+
+ if( i[1] > co[1] ) break;
+
+ i[2] ++;
+ i[0] = 0;
+ }
+ else i[2] ++;
+ }
+
+ co[0] = i[0];
+ co[1] = i[1];
+ co[2] = i[2];
+}
+
+/*
+ * based on the index specied in co[2], work out the visual character
+ * coordinates and store them in co[0], co[1]
+ */
+static void _ui_textbox_index_calc_coords( int co[3], int wrap_length )
+{
+ co[0] = 0;
+ co[1] = 0;
+
+ char c;
+ int i=0;
+
+ while( (c = vg_ui.textbuf[i ++]) ){
+ if( i > co[2] ) break;
+ if( co[0] >= wrap_length ){
+ co[1] ++;
+ co[0] = 0;
+ }
+ if( c >= 32 && c <= 126 ) co[0] ++;
+ else if( c == '\n' ){
+ co[1] ++;
+ co[0] = 0;
+ }
+ }
+}
+
+/*
+ * calculate the number of characters remaining until either:
+ * - the wrap_length limit is hit
+ * - end of the line/string
+ *
+ * index must be fully populated with visual X/Y, and linear index
+ */
+static int _ui_textbox_run_remaining( int index[3], int wrap_length )
+{
+ int i=0, printed_chars=0;
+ char c;
+ while( (c = vg_ui.textbuf[index[2] + (i ++)]) ){
+ if( index[0]+i >= wrap_length ) break;
+ if( c >= 32 && c <= 126 ) printed_chars ++;
+ else if( c == '\n' ) break;
+ }
+
+ return printed_chars+1;
+}
+
+static int ui_textbox( ui_rect rect, char *buf, u32 len, u32 flags,
+ struct ui_textbox_callbacks *callbacks )
+{
+ int clickup= ui_click_up(UI_MOUSE_LEFT),
+ clickdown = ui_click_down(UI_MOUSE_LEFT),
+ click = ui_clicking(UI_MOUSE_LEFT) | clickup,
target = ui_inside_rect( rect, vg_ui.mouse_click ) && click,
hover = ui_inside_rect( rect, vg_ui.mouse );
- u32 col_base = vg_ui.scheme[ k_ui_bg ],
- col_highlight = vg_ui.scheme[ k_ui_fg ];
+ /* allow instant transitions from textbox->textbox */
+ if( (vg_ui.focused_control_type != k_ui_control_none) &&
+ (vg_ui.focused_control_type != k_ui_control_textbox) ){
+ clickup = 0;
+ clickdown = 0;
+ click = 0;
+ target = 0;
+ hover = 0;
+ }
+
+ u32 col_base = ui_colour( k_ui_bg ),
+ col_highlight = ui_colour( k_ui_fg ),
+ col_cursor = (0x00ffffff & ui_colour(k_ui_fg))|0x7f000000;
ui_px border = -1;
+ ui_rect text_rect;
+ rect_copy( rect, text_rect );
+
+ if( flags & UI_TEXTBOX_MULTILINE ) text_rect[3] = rect[3]-16;
+ else text_rect[3] = 14;
+
+ text_rect[2] -= 16;
+ ui_rect_center( rect, text_rect );
+
+ ui_px wrap_length = 1024;
+
+ if( flags & UI_TEXTBOX_WRAP )
+ wrap_length = text_rect[2] / UI_GLYPH_SPACING_X;
+
+ if( hover ){
+ vg_ui.cursor = k_ui_cursor_ibeam;
+ }
+
if( vg_ui.focused_control_id == buf ){
ui_fill( rect, col_base );
- ui_outline( rect, -2, vg_ui.scheme[ k_ui_orange ] );
- vg_ui.focused_control_hit = 1;
- return 0;
- }
+ ui_ntext( text_rect, buf, wrap_length, 1, k_ui_align_left, 0 );
- if( click ){
- if( target ){
- if( hover ){
- if( clickup ){
- ui_fill( rect, col_highlight );
- vg_ui.ignore_input_frames = 2;
- rect_copy( rect, vg_ui.click_fader );
- vg_ui.click_fade_opacity = 1.0f;
- vg_ui.focused_control_id = buf;
- vg_ui.focused_control_hit = 1;
- vg_ui.focused_control_type = k_ui_control_textbox;
- SDL_StartTextInput();
+ if( !(flags & UI_TEXTBOX_AUTOFOCUS) && ((clickup||clickdown) && !target)){
+ ui_defocus_all();
+ }
+ else{
+ vg_ui.focused_control_hit = 1;
+ if( click && target ){
+ int p0[3] ={
+ (vg_ui.mouse_click[0] - text_rect[0]) / UI_GLYPH_SPACING_X,
+ (vg_ui.mouse_click[1] - text_rect[1]) / 14,
+ -1
+ },
+ p1[3] = {
+ (vg_ui.mouse[0] - text_rect[0]) / UI_GLYPH_SPACING_X,
+ (vg_ui.mouse[1] - text_rect[1]) / 14,
+ -1
+ };
+
+ if( flags & UI_TEXTBOX_MULTILINE ){
+ _ui_textbox_calc_index_from_grid( p0, wrap_length );
+ _ui_textbox_calc_index_from_grid( p1, wrap_length );
+
+ vg_ui.textbox.cursor_pos = p0[2];
+ vg_ui.textbox.cursor_user = p1[2];
}
else{
- ui_fill( rect, col_highlight );
+ int max = strlen( buf );
+ vg_ui.textbox.cursor_pos = VG_MAX( 0, VG_MIN( max, p0[0] )),
+ vg_ui.textbox.cursor_user = VG_MAX( 0, VG_MIN( max, p1[0] ));
+ }
+ }
+
+ ui_outline( rect, -2, vg_ui.scheme[ k_ui_orange ] );
+
+ ui_rect cursor;
+
+ int c0 = vg_ui.textbox.cursor_pos,
+ c1 = vg_ui.textbox.cursor_user,
+ start = VG_MIN( c0, c1 ),
+ end = VG_MAX( c0, c1 ),
+ chars = end-start;
+
+ if( flags & (UI_TEXTBOX_MULTILINE|UI_TEXTBOX_WRAP) ){
+
+ int pos[3], remaining = chars;
+
+ pos[2] = start;
+ _ui_textbox_index_calc_coords( pos, wrap_length );
+
+ if( start==end ){
+ cursor[0] = text_rect[0] + pos[0]*UI_GLYPH_SPACING_X-1;
+ cursor[1] = text_rect[1] + pos[1]*14;
+ cursor[2] = 2;
+ cursor[3] = 13;
+ ui_fill( cursor, col_cursor );
+ rect_copy( cursor, vg_ui.click_fader_end );
+ }
+ else{
+ while( remaining ){
+ int run = _ui_textbox_run_remaining( pos, wrap_length );
+ run = VG_MIN( run, remaining );
+
+ cursor[0] = text_rect[0] + pos[0]*UI_GLYPH_SPACING_X-1;
+ cursor[1] = text_rect[1] + pos[1]*14;
+ cursor[2] = (float)(run)*(float)UI_GLYPH_SPACING_X;
+ cursor[3] = 13;
+
+ ui_fill( cursor, col_cursor );
+
+ remaining -= run;
+ pos[0] = 0;
+ pos[1] ++;
+ pos[2] += run;
+ }
+ rect_copy( cursor, vg_ui.click_fader_end );
}
}
else{
- ui_fill( rect, col_base );
- ui_outline( rect, -1, col_highlight );
+ cursor[0] = text_rect[0] + start*UI_GLYPH_SPACING_X-1;
+ cursor[1] = text_rect[1];
+ cursor[3] = 13;
+
+ if( start==end ){
+ cursor[2] = 2;
+ }
+ else{
+ cursor[2] = (float)(chars)*(float)UI_GLYPH_SPACING_X;
+ }
+
+ if( (vg_ui.click_fade_opacity<=0.0f) &&
+ ui_clip( rect, cursor, cursor ) ){
+ ui_fill( cursor, col_cursor );
+ }
+
+ rect_copy( cursor, vg_ui.click_fader_end );
}
}
- else{
- ui_fill( rect, col_base );
- }
+
+ return 0;
}
- else{
- ui_fill( rect, col_base );
- if( hover ){
- ui_outline( rect, -1, col_highlight );
+ if( click || (flags & UI_TEXTBOX_AUTOFOCUS) ){
+ if( (target && hover) || (flags & UI_TEXTBOX_AUTOFOCUS) ){
+ ui_defocus_all();
+
+ ui_fill( rect, col_highlight );
+ vg_ui.ignore_input_frames = 2;
+ rect_copy( rect, vg_ui.click_fader );
+ rect_copy( rect, vg_ui.click_fader_end );
+
+ vg_ui.click_fade_opacity = 1.0f;
+ vg_ui.textbuf = buf;
+ vg_ui.focused_control_hit = 1;
+ vg_ui.focused_control_type = k_ui_control_textbox;
+ vg_ui.textbox.len = len;
+ vg_ui.textbox.flags = flags;
+ vg_ui.textbox.cursor_pos = 0;
+ vg_ui.textbox.cursor_user = 0;
+
+ if( callbacks ){
+ vg_ui.textbox.callbacks = *callbacks;
+ }
+ else{
+ vg_ui.textbox.callbacks.change = NULL;
+ vg_ui.textbox.callbacks.down = NULL;
+ vg_ui.textbox.callbacks.up = NULL;
+ vg_ui.textbox.callbacks.enter = NULL;
+ }
+
+ SDL_StartTextInput();
}
}
+ ui_fill( rect, col_base );
+
+ if( hover ){
+ ui_outline( rect, -1, col_highlight );
+ }
+
+ ui_ntext( text_rect, buf, wrap_length, 1, k_ui_align_left, 0 );
return 0;
}
+/*
+ * Input handling
+ * -----------------------------------------------------------------------------
+ */
+
+/*
+ * Handles binds
+ */
+static void _ui_proc_key( SDL_Keysym ev )
+{
+ if( vg_ui.focused_control_type != k_ui_control_textbox ){
+ return;
+ }
+
+ struct textbox_mapping
+ {
+ u16 mod;
+ SDL_Keycode key;
+
+ void (*handler)(void);
+ }
+ mappings[] =
+ {
+ { 0, SDLK_LEFT, _ui_textbox_left },
+ { KMOD_SHIFT, SDLK_LEFT, _ui_textbox_left_select },
+ { 0, SDLK_RIGHT, _ui_textbox_right },
+ { KMOD_SHIFT, SDLK_RIGHT, _ui_textbox_right_select },
+ { 0, SDLK_DOWN, _ui_textbox_down },
+ { 0, SDLK_UP, _ui_textbox_up },
+ { 0, SDLK_BACKSPACE, _ui_textbox_backspace },
+ { KMOD_SHIFT, SDLK_BACKSPACE, _ui_textbox_backspace },
+ { KMOD_CTRL, SDLK_BACKSPACE, _ui_textbox_backspace },
+ { 0, SDLK_DELETE, _ui_textbox_delete },
+ { 0, SDLK_HOME, _ui_textbox_home },
+ { KMOD_SHIFT, SDLK_HOME, _ui_textbox_home_select },
+ { 0, SDLK_END, _ui_textbox_end },
+ { KMOD_SHIFT, SDLK_END, _ui_textbox_end_select },
+ { KMOD_CTRL, SDLK_a, _ui_textbox_select_all },
+ { KMOD_CTRL, SDLK_c, _ui_textbox_to_clipboard },
+ { KMOD_CTRL, SDLK_x, _ui_textbox_cut },
+ { KMOD_CTRL, SDLK_v, _ui_textbox_clipboard_paste },
+ { 0, SDLK_RETURN, _ui_textbox_enter },
+ { 0, SDLK_ESCAPE, ui_defocus_all },
+ };
+
+ SDL_Keymod mod = 0;
+
+ if( ev.mod & KMOD_SHIFT )
+ mod |= KMOD_SHIFT;
+
+ if( ev.mod & KMOD_CTRL )
+ mod |= KMOD_CTRL;
+
+ if( ev.mod & KMOD_ALT )
+ mod |= KMOD_ALT;
+
+ for( int i=0; i<vg_list_size( mappings ); i++ ){
+ struct textbox_mapping *mapping = &mappings[i];
+
+ if( mapping->key == ev.sym ){
+ if( mapping->mod == 0 ){
+ if( mod == 0 ){
+ mapping->handler();
+ return;
+ }
+ }
+ else if( (mod & mapping->mod) == mapping->mod ){
+ mapping->handler();
+ return;
+ }
+ }
+ }
+}
+
+/*
+ * Callback for text entry mode
+ */
+VG_STATIC void ui_proc_utf8( const char *text )
+{
+ if( vg_ui.focused_control_type == k_ui_control_textbox ){
+ const char *ptr = text;
+
+ while( *ptr ){
+ if( *ptr != '`' ) _ui_textbox_put_char( *ptr );
+ ptr ++;
+ }
+
+ if( vg_ui.textbox.callbacks.change ){
+ vg_ui.textbox.callbacks.change( vg_ui.textbuf, vg_ui.textbox.len );
+ }
+ }
+}
+
+static void ui_label( ui_rect rect, const char *text, ui_px size,
+ ui_px gap, ui_rect r )
+{
+ ui_rect l;
+ ui_px width = (ui_text_line_width(text)+UI_GLYPH_SPACING_X) * size;
+ ui_split( rect, k_ui_axis_v, width, gap, l, r );
+ ui_text( l, text, 1, k_ui_align_middle_left, 0 );
+}
+
#endif /* VG_IMGUI_H */
projects / vg.git / blobdiff