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4a2fab0024
Nuklear/gui.c
vurtun 4a2fab0024 removed possible undefined behavior
2015-05-17 15:30:11 +02:00

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/*
Copyright (c) 2015
vurtun <polygone@gmx.net>
MIT licence
*/
#include "gui.h"
#ifdef GUI_USE_DEBUG_BUILD
#include <assert.h>
#define ASSERT assert
#else
#define ASSERT(expr)
#endif
#ifndef NULL
#define NULL ((void*)0)
#endif
#define MAX_NUMBER_BUFFER 64
#define UNUSED(a) ((void)(a))
#define PASTE(a,b) a##b
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#define MAX(a,b) ((a) < (b) ? (b) : (a))
#define CLAMP(i,v,x) (MAX(MIN(v,x), i))
#define SATURATE(x) (MAX(0, MIN(1.0f, x)))
#define LEN(a) (sizeof(a)/sizeof(a)[0])
#define ABS(a) (((a) < 0) ? -(a) : (a))
#define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
#define INBOX(px, py, x, y, w, h) (BETWEEN(px, x, x+w) && BETWEEN(py, y, y+h))
#define INTERSECT(x0, y0, w0, h0, x1, y1, w1, h1) \
(!(((x1 > (x0 + w0)) || ((x1 + w1) < x0) || (y1 > (y0 + h0)) || (y1 + h1) < y0)))
#define col_load(c,j,k,l,m) (c).r = (j), (c).g = (k), (c).b = (l), (c).a = (m)
#define vec2_load(v,a,b) (v).x = (a), (v).y = (b)
#define vec2_mov(to,from) (to).x = (from).x, (to).y = (from).y
#define vec2_len(v) ((float)fsqrt((v).x*(v).x+(v).y*(v).y))
#define vec2_sub(r,a,b) do {(r).x=(a).x-(b).x; (r).y=(a).y-(b).y;} while(0)
#define vec2_muls(r, v, s) do {(r).x=(v).x*(s); (r).y=(v).y*(s);} while(0)
#define ALIGNOF(t) ((char*)(&((struct {char c; t _h;}*)0)->_h) - (char*)0)
#define ALIGN_PTR(x, mask) (void*)((gui_size)((gui_byte*)(x) + (mask-1)) & ~(mask-1))
#define ALIGN(x, mask) ((x) + (mask-1)) & ~(mask-1)
#define OFFSETOF(st, m) ((gui_size)(&((st *)0)->m))
static const struct gui_rect null_rect = {0.0f, 0.0f, 9999.0f, 9999.0f};
static const gui_char utfbyte[GUI_UTF_SIZE+1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
static const gui_char utfmask[GUI_UTF_SIZE+1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
static const long utfmin[GUI_UTF_SIZE+1] = {0, 0, 0x80, 0x800, 0x100000};
static const long utfmax[GUI_UTF_SIZE+1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
static void*
memcopy(void *dst, const void *src, gui_size size)
{
gui_size i = 0;
char *d = dst;
const char *s = src;
for (i = 0; i < size; ++i)
d[i] = s[i];
return dst;
}
static void
zero(void *dst, gui_size size)
{
gui_size i;
char *d = dst;
for (i = 0; i < size; ++i) d[i] = 0;
}
static gui_size
strsiz(const char *str)
{
gui_size siz = 0;
while (str && *str++ != '\0') siz++;
return siz;
}
static gui_int
strtoi(gui_int *number, const char *buffer, gui_size len)
{
gui_size i;
if (!number || !buffer)
return 0;
*number = 0;
for (i = 0; i < len; ++i)
*number = *number * 10 + (buffer[i] - '0');
return 1;
}
static gui_size
itos(char *buffer, gui_int num)
{
static const char digit[] = "0123456789";
gui_int shifter;
gui_size len = 0;
char *p = buffer;
if (!buffer)
return 0;
if (num < 0) {
num = ABS(num);
*p++ = '-';
}
shifter = num;
do {
++p;
shifter = shifter/10;
} while (shifter);
*p = '\0';
len = (gui_size)(p - buffer);
do {
*--p = digit[num % 10];
num = num / 10;
} while (num);
return len;
}
static void
unify(struct gui_rect *clip, const struct gui_rect *a, gui_float x0, gui_float y0,
gui_float x1, gui_float y1)
{
clip->x = MAX(a->x, x0) - 1;
clip->y = MAX(a->y, y0) - 1;
clip->w = MIN(a->x + a->w, x1) - clip->x+ 2;
clip->h = MIN(a->y + a->h, y1) - clip->y + 2;
clip->w = MAX(0, clip->w);
clip->h = MAX(0, clip->h);
}
static gui_size
gui_utf_validate(long *u, gui_size i)
{
if (!u) return 0;
if (!BETWEEN(*u, utfmin[i], utfmax[i]) ||
BETWEEN(*u, 0xD800, 0xDFFF))
*u = GUI_UTF_INVALID;
for (i = 1; *u > utfmax[i]; ++i);
return i;
}
static gui_long
gui_utf_decode_byte(gui_char c, gui_size *i)
{
if (!i) return 0;
for(*i = 0; *i < LEN(utfmask); ++(*i)) {
if ((c & utfmask[*i]) == utfbyte[*i])
return c & ~utfmask[*i];
}
return 0;
}
gui_size
gui_utf_decode(const gui_char *c, gui_long *u, gui_size clen)
{
gui_size i, j, len, type;
gui_long udecoded;
*u = GUI_UTF_INVALID;
if (!c || !u) return 0;
if (!clen) return 0;
udecoded = gui_utf_decode_byte(c[0], &len);
if (!BETWEEN(len, 1, GUI_UTF_SIZE))
return 1;
for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
udecoded = (udecoded << 6) | gui_utf_decode_byte(c[i], &type);
if (type != 0)
return j;
}
if (j < len)
return 0;
*u = udecoded;
gui_utf_validate(u, len);
return len;
}
static gui_char
gui_utf_encode_byte(gui_long u, gui_size i)
{
return (gui_char)(utfbyte[i] | (u & ~utfmask[i]));
}
gui_size
gui_utf_encode(gui_long u, gui_char *c, gui_size clen)
{
gui_size len, i;
len = gui_utf_validate(&u, 0);
if (clen < len || !len)
return 0;
for (i = len - 1; i != 0; --i) {
c[i] = gui_utf_encode_byte(u, 0);
u >>= 6;
}
c[0] = gui_utf_encode_byte(u, len);
return len;
}
static void
gui_triangle_from_direction(struct gui_vec2 *result, gui_float x, gui_float y,
gui_float w, gui_float h, gui_float pad_x, gui_float pad_y,
enum gui_heading direction)
{
gui_float w_half, h_half;
ASSERT(result);
w = MAX(4 * pad_x, w);
h = MAX(4 * pad_y, h);
w = w - 2 * pad_x;
h = h - 2 * pad_y;
x = x + pad_x;
y = y + pad_y;
w_half = w / 2.0f;
h_half = h / 2.0f;
if (direction == GUI_UP) {
result[0].x = x + w_half;
result[0].y = y;
result[1].x = x;
result[1].y = y + h;
result[2].x = x + w;
result[2].y = y + h;
} else if (direction == GUI_RIGHT) {
result[0].x = x;
result[0].y = y;
result[1].x = x;
result[1].y = y + h;
result[2].x = x + w;
result[2].y = y + h_half;
} else if (direction == GUI_DOWN) {
result[0].x = x;
result[0].y = y;
result[1].x = x + w_half;
result[1].y = y + h;
result[2].x = x + w;
result[2].y = y;
} else {
result[0].x = x;
result[0].y = y + h_half;
result[1].x = x + w;
result[1].y = y + h;
result[2].x = x + w;
result[2].y = y;
}
}
void
gui_input_begin(struct gui_input *in)
{
gui_size i;
ASSERT(in);
if (!in) return;
in->mouse_clicked = 0;
in->text_len = 0;
vec2_mov(in->mouse_prev, in->mouse_pos);
for (i = 0; i < GUI_KEY_MAX; i++)
in->keys[i].clicked = 0;
}
void
gui_input_motion(struct gui_input *in, gui_int x, gui_int y)
{
ASSERT(in);
if (!in) return;
in->mouse_pos.x = (gui_float)x;
in->mouse_pos.y = (gui_float)y;
}
void
gui_input_key(struct gui_input *in, enum gui_keys key, gui_bool down)
{
ASSERT(in);
if (!in) return;
if (in->keys[key].down == down) return;
in->keys[key].down = down;
in->keys[key].clicked++;
}
void
gui_input_button(struct gui_input *in, gui_int x, gui_int y, gui_bool down)
{
ASSERT(in);
if (!in) return;
if (in->mouse_down == down) return;
in->mouse_clicked_pos.x = (gui_float)x;
in->mouse_clicked_pos.y = (gui_float)y;
in->mouse_down = down;
in->mouse_clicked++;
}
void
gui_input_char(struct gui_input *in, const gui_glyph glyph)
{
gui_size len = 0;
gui_long unicode;
ASSERT(in);
if (!in) return;
len = gui_utf_decode(glyph, &unicode, GUI_UTF_SIZE);
if (len && ((in->text_len + len) < GUI_INPUT_MAX)) {
gui_utf_encode(unicode, &in->text[in->text_len], GUI_INPUT_MAX - in->text_len);
in->text_len += len;
}
}
void
gui_input_end(struct gui_input *in)
{
ASSERT(in);
if (!in) return;
vec2_sub(in->mouse_delta, in->mouse_pos, in->mouse_prev);
}
void
gui_text(const struct gui_canvas *canvas, gui_float x, gui_float y, gui_float w, gui_float h,
const char *string, gui_size len, const struct gui_text *text, enum gui_text_align align,
const struct gui_font *font)
{
gui_float label_x;
gui_float label_y;
gui_float label_w;
gui_float label_h;
gui_size text_width;
ASSERT(text);
if (!text) return;
text_width = font->width(font->userdata, (const gui_char*)string, len);
label_y = y + text->padding.y;
label_h = MAX(0, h - 2 * text->padding.y);
if (align == GUI_TEXT_LEFT) {
label_x = x + text->padding.x;
label_w = MAX(0, w - 2 * text->padding.x);
} else if (align == GUI_TEXT_CENTERED) {
label_w = 2 * text->padding.x + (gui_float)text_width;
label_x = (x + text->padding.x + ((w - 2 * text->padding.x)/2)) - (label_w/2);
label_x = MAX(x + text->padding.x, label_x);
label_w = MIN(x + w, label_x + label_w) - label_x;
} else if (align == GUI_TEXT_RIGHT) {
label_x = MAX(x, (x + w) - (2 * text->padding.x + (gui_float)text_width));
label_w = (gui_float)text_width + 2 * text->padding.x;
} else return;
canvas->draw_rect(canvas->userdata, x, y, w, h, text->background);
canvas->draw_text(canvas->userdata, label_x, label_y, label_w, label_h,
(const gui_char*)string, len, font, text->background, text->foreground);
}
static gui_bool
gui_do_button(const struct gui_canvas *canvas, gui_float x, gui_float y, gui_float w,
gui_float h, const struct gui_button *button, const struct gui_input *in,
enum gui_button_behavior behavior)
{
gui_bool ret = gui_false;
struct gui_color background;
ASSERT(button);
if (!button)
return gui_false;
background = button->background;
if (in && INBOX(in->mouse_pos.x,in->mouse_pos.y, x, y, w, h)) {
background = button->highlight;
if (INBOX(in->mouse_clicked_pos.x, in->mouse_clicked_pos.y, x, y, w, h)) {
ret = (behavior != GUI_BUTTON_DEFAULT) ? in->mouse_down:
(in->mouse_down && in->mouse_clicked);
}
}
canvas->draw_rect(canvas->userdata, x, y, w, h, button->foreground);
canvas->draw_rect(canvas->userdata, x + button->border, y + button->border,
w - 2 * button->border, h - 2 * button->border, background);
return ret;
}
gui_bool
gui_button_text(const struct gui_canvas *canvas, gui_float x, gui_float y,
gui_float w, gui_float h, const char *string, enum gui_button_behavior b,
const struct gui_button *button, const struct gui_input *in, const struct gui_font *font)
{
gui_bool ret = gui_false;
gui_float button_w, button_h;
struct gui_text text;
struct gui_color font_color;
struct gui_color bg_color;
gui_float inner_x, inner_y;
gui_float inner_w, inner_h;
ASSERT(button);
ASSERT(string);
ASSERT(canvas);
if (!canvas || !button)
return gui_false;
font_color = button->content;
bg_color = button->background;
button_w = MAX(w, 2 * button->padding.x);
button_h = MAX(h, font->height + 2 * button->padding.y);
if (in && INBOX(in->mouse_pos.x, in->mouse_pos.y, x, y, button_w, button_h)) {
font_color = button->highlight_content;
bg_color = button->highlight;
}
ret = gui_do_button(canvas, x, y, button_w, button_h, button, in, b);
inner_x = x + button->border;
inner_y = y + button->border;
inner_w = button_w - 2 * button->border;
inner_h = button_h - 2 * button->border;
text.padding.x = button->padding.x;
text.padding.y = button->padding.y;
text.background = bg_color;
text.foreground = font_color;
gui_text(canvas, inner_x, inner_y, inner_w, inner_h, string, strsiz(string),
&text, GUI_TEXT_CENTERED, font);
return ret;
}
gui_bool
gui_button_triangle(const struct gui_canvas *canvas, gui_float x, gui_float y,
gui_float w, gui_float h, enum gui_heading heading, enum gui_button_behavior b,
const struct gui_button *button, const struct gui_input *in)
{
gui_bool pressed;
struct gui_color col;
struct gui_vec2 points[3];
ASSERT(button);
ASSERT(canvas);
if (!canvas || !button)
return gui_false;
pressed = gui_do_button(canvas, x, y, w, h, button, in, b);
gui_triangle_from_direction(points, x, y, w, h, button->padding.x, button->padding.y, heading);
col = (in && INBOX(in->mouse_pos.x, in->mouse_pos.y, x, y, w, h)) ?
button->highlight_content : button->content;
canvas->draw_triangle(canvas->userdata, points[0].x, points[0].y,
points[1].x, points[1].y, points[2].x, points[2].y, col);
return pressed;
}
gui_bool
gui_button_image(const struct gui_canvas *canvas, gui_float x, gui_float y,
gui_float w, gui_float h, gui_image img, enum gui_button_behavior b,
const struct gui_button *button, const struct gui_input *in)
{
gui_bool pressed;
gui_float img_x, img_y, img_w, img_h;
ASSERT(button);
ASSERT(canvas);
if (!canvas || !button)
return gui_false;
pressed = gui_do_button(canvas, x, y, w, h, button, in, b);
img_x = x + button->padding.x;
img_y = y + button->padding.y;
img_w = w - 2 * button->padding.x;
img_h = h - 2 * button->padding.y;
canvas->draw_image(canvas->userdata, img_x, img_y, img_w, img_h, img);
return pressed;
}
gui_bool
gui_toggle(const struct gui_canvas *canvas, gui_float x, gui_float y, gui_float w,
gui_float h, gui_bool active, const char *string, enum gui_toggle_type type,
const struct gui_toggle *toggle, const struct gui_input *in, const struct gui_font *font)
{
gui_bool toggle_active;
gui_float select_size;
gui_float toggle_w, toggle_h;
gui_float select_x, select_y;
gui_float cursor_x, cursor_y;
gui_float cursor_pad, cursor_size;
ASSERT(toggle);
ASSERT(canvas);
if (!canvas || !toggle)
return 0;
toggle_w = MAX(w, font->height + 2 * toggle->padding.x);
toggle_h = MAX(h, font->height + 2 * toggle->padding.y);
toggle_active = active;
select_x = x + toggle->padding.x;
select_y = y + toggle->padding.y;
select_size = font->height + 2 * toggle->padding.y;
cursor_pad = (gui_float)(gui_int)(select_size / 8);
cursor_size = select_size - cursor_pad * 2;
cursor_x = select_x + cursor_pad;
cursor_y = select_y + cursor_pad;
if (in && !in->mouse_down && in->mouse_clicked)
if (INBOX(in->mouse_clicked_pos.x, in->mouse_clicked_pos.y,
cursor_x, cursor_y, cursor_size, cursor_size))
toggle_active = !toggle_active;
if (type == GUI_TOGGLE_CHECK)
canvas->draw_rect(canvas->userdata, select_x, select_y, select_size,
select_size, toggle->foreground);
else canvas->draw_circle(canvas->userdata, select_x, select_y, select_size,
select_size, toggle->foreground);
if (toggle_active) {
if (type == GUI_TOGGLE_CHECK)
canvas->draw_rect(canvas->userdata,cursor_x,cursor_y,cursor_size,
cursor_size, toggle->cursor);
else canvas->draw_circle(canvas->userdata, cursor_x, cursor_y, cursor_size,
cursor_size, toggle->cursor);
}
if (font && string) {
struct gui_text text;
gui_float inner_x, inner_y;
gui_float inner_w, inner_h;
inner_x = x + select_size + toggle->padding.x * 2;
inner_y = (y + (select_size / 2)) - (font->height / 2);
inner_w = (x + toggle_w) - (inner_x + toggle->padding.x);
inner_h = (y + toggle_h) - (inner_y + toggle->padding.y);
text.padding.x = 0;
text.padding.y = 0;
text.background = toggle->background;
text.foreground = toggle->font;
gui_text(canvas, inner_x, inner_y, inner_w, inner_h, string, strsiz(string),
&text, GUI_TEXT_LEFT, font);
}
return toggle_active;
}
gui_float
gui_slider(const struct gui_canvas *canvas, gui_float x, gui_float y, gui_float w, gui_float h,
gui_float min, gui_float val, gui_float max, gui_float step,
const struct gui_slider *slider, const struct gui_input *in)
{
gui_float slider_range;
gui_float slider_min, slider_max;
gui_float slider_value, slider_steps;
gui_float slider_w, slider_h;
gui_float cursor_offset;
gui_float cursor_x, cursor_y;
gui_float cursor_w, cursor_h;
ASSERT(slider);
ASSERT(canvas);
if (!canvas || !slider)
return 0;
slider_w = MAX(w, 2 * slider->padding.x);
slider_h = MAX(h, 2 * slider->padding.y);
slider_max = MAX(min, max);
slider_min = MIN(min, max);
slider_value = CLAMP(slider_min, val, slider_max);
slider_range = slider_max - slider_min;
slider_steps = slider_range / step;
cursor_offset = (slider_value - slider_min) / step;
cursor_w = (slider_w - 2 * slider->padding.x) / (slider_steps + 1);
cursor_h = slider_h - 2 * slider->padding.y;
cursor_x = x + slider->padding.x + (cursor_w * cursor_offset);
cursor_y = y + slider->padding.y;
if (in && in->mouse_down &&
INBOX(in->mouse_pos.x, in->mouse_pos.y, x, y, slider_w, slider_h) &&
INBOX(in->mouse_clicked_pos.x,in->mouse_clicked_pos.y, x, y, slider_w, slider_h))
{
const float d = in->mouse_pos.x - (cursor_x + cursor_w / 2.0f);
const float pxstep = (slider_w - 2 * slider->padding.x) / slider_steps;
if (ABS(d) >= pxstep) {
const gui_float steps = (gui_float)((gui_int)(ABS(d) / pxstep));
slider_value += (d > 0) ? (step * steps) : -(step * steps);
slider_value = CLAMP(slider_min, slider_value, slider_max);
cursor_x = x + slider->padding.x + (cursor_w * (slider_value - slider_min));
}
}
canvas->draw_rect(canvas->userdata, x, y, slider_w, slider_h, slider->background);
canvas->draw_rect(canvas->userdata,cursor_x,cursor_y,cursor_w,cursor_h,slider->foreground);
return slider_value;
}
gui_size
gui_progress(const struct gui_canvas *canvas, gui_float x, gui_float y,
gui_float w, gui_float h, gui_size value, gui_size max, gui_bool modifyable,
const struct gui_slider *prog, const struct gui_input *in)
{
gui_float cursor_x, cursor_y;
gui_float cursor_w, cursor_h;
gui_float prog_w, prog_h;
gui_float prog_scale;
gui_size prog_value;
ASSERT(prog);
ASSERT(canvas);
if (!canvas || !prog) return 0;
prog_w = MAX(w, 2 * prog->padding.x + 1);
prog_h = MAX(h, 2 * prog->padding.y + 1);
prog_value = MIN(value, max);
if (in && modifyable && in->mouse_down &&
INBOX(in->mouse_pos.x, in->mouse_pos.y, x, y, prog_w, prog_h)){
gui_float ratio = (gui_float)(in->mouse_pos.x - x) / (gui_float)prog_w;
prog_value = (gui_size)((gui_float)max * ratio);
}
if (!max) return prog_value;
prog_value = MIN(prog_value, max);
prog_scale = (gui_float)prog_value / (gui_float)max;
cursor_h = prog_h - 2 * prog->padding.y;
cursor_w = (prog_w - 2 * prog->padding.x) * prog_scale;
cursor_x = x + prog->padding.x;
cursor_y = y + prog->padding.y;
canvas->draw_rect(canvas->userdata, x, y, prog_w, prog_h, prog->background);
canvas->draw_rect(canvas->userdata, cursor_x, cursor_y, cursor_w, cursor_h, prog->foreground);
return prog_value;
}
static gui_bool
gui_filter_input_default(gui_long unicode)
{
UNUSED(unicode);
return gui_true;
}
static gui_bool
gui_filter_input_ascii(gui_long unicode)
{
if (unicode < 0 || unicode > 128)
return gui_false;
return gui_true;
}
static gui_bool
gui_filter_input_float(gui_long unicode)
{
if ((unicode < '0' || unicode > '9') && unicode != '.' && unicode != '-')
return gui_false;
return gui_true;
}
static gui_bool
gui_filter_input_decimal(gui_long unicode)
{
if (unicode < '0' || unicode > '9')
return gui_false;
return gui_true;
}
static gui_bool
gui_filter_input_hex(gui_long unicode)
{
if ((unicode < '0' || unicode > '9') &&
(unicode < 'a' || unicode > 'f') &&
(unicode < 'A' || unicode > 'B'))
return gui_false;
return gui_true;
}
static gui_bool
gui_filter_input_oct(gui_long unicode)
{
if (unicode < '0' || unicode > '7')
return gui_false;
return gui_true;
}
static gui_bool
gui_filter_input_binary(gui_long unicode)
{
if (unicode < '0' || unicode > '1')
return gui_false;
return gui_true;
}
static gui_size
gui_buffer_input(gui_char *buffer, gui_size length, gui_size max,
gui_filter filter, const struct gui_input *in)
{
gui_long unicode;
gui_size src_len = 0;
gui_size text_len = 0, glyph_len = 0;
ASSERT(buffer);
ASSERT(in);
glyph_len = gui_utf_decode(in->text, &unicode, in->text_len);
while (glyph_len && ((text_len + glyph_len) <= in->text_len) && (length + src_len) < max) {
if (filter(unicode)) {
gui_size i = 0;
for (i = 0; i < glyph_len; i++)
buffer[length++] = in->text[text_len + i];
text_len += glyph_len;
}
src_len = src_len + glyph_len;
glyph_len = gui_utf_decode(in->text + src_len, &unicode, in->text_len - src_len);
}
return text_len;
}
gui_size
gui_edit_filtered(const struct gui_canvas *canvas, gui_float x, gui_float y, gui_float w,
gui_float h, gui_char *buffer, gui_size len, gui_size max, gui_bool *active,
const struct gui_edit *field, gui_filter filter, const struct gui_input *in,
const struct gui_font *font)
{
gui_float input_w, input_h;
gui_bool input_active;
ASSERT(canvas);
ASSERT(buffer);
ASSERT(field);
if (!canvas || !buffer || !field)
return 0;
input_w = MAX(w, 2 * field->padding.x);
input_h = MAX(h, font->height);
input_active = *active;
canvas->draw_rect(canvas->userdata, x, y, input_w, input_h, field->background);
canvas->draw_rect(canvas->userdata, x + 1, y, input_w - 1, input_h, field->foreground);
if (in && in->mouse_clicked && in->mouse_down)
input_active = INBOX(in->mouse_pos.x, in->mouse_pos.y, x, y, input_w, input_h);
if (input_active && in) {
const struct gui_key *bs = &in->keys[GUI_KEY_BACKSPACE];
const struct gui_key *del = &in->keys[GUI_KEY_DEL];
const struct gui_key *esc = &in->keys[GUI_KEY_ESCAPE];
const struct gui_key *enter = &in->keys[GUI_KEY_ENTER];
const struct gui_key *space = &in->keys[GUI_KEY_SPACE];
if ((del->down && del->clicked) || (bs->down && bs->clicked))
if (len > 0) len = len - 1;
if ((enter->down && enter->clicked) || (esc->down && esc->clicked))
input_active = gui_false;
if ((space->down && space->clicked) && (len < max))
buffer[len++] = ' ';
if (in->text_len && len < max)
len += gui_buffer_input(buffer, len, max, filter, in);
}
if (font && buffer) {
gui_size offset = 0;
gui_float label_x, label_y, label_h;
gui_float label_w = input_w - 2 * field->padding.x;
gui_size cursor_width = (gui_size)font->width(font->userdata, (const gui_char*)"X", 1);
gui_size text_len = len;
gui_size text_width = font->width(font->userdata, buffer, text_len);
while (text_len && (text_width + cursor_width) > (gui_size)label_w) {
gui_long unicode;
offset += gui_utf_decode(&buffer[offset], &unicode, text_len);
text_len = len - offset;
text_width = font->width(font->userdata, &buffer[offset], text_len);
}
label_x = x + field->padding.x;
label_y = y + field->padding.y;
label_h = input_h - 2 * field->padding.y;
canvas->draw_text(canvas->userdata, label_x, label_y, label_w, label_h,
&buffer[offset], text_len, font, field->foreground, field->background);
if (input_active && field->show_cursor) {
canvas->draw_rect(canvas->userdata, label_x + (gui_float)text_width, label_y,
(gui_float)cursor_width, label_h, field->cursor);
}
}
*active = input_active;
return len;
}
gui_size
gui_edit(const struct gui_canvas *canvas, gui_float x, gui_float y, gui_float w,
gui_float h, gui_char *buffer, gui_size len, gui_size max, gui_bool *active,
const struct gui_edit *field, enum gui_input_filter f,
const struct gui_input *in, const struct gui_font *font)
{
static const gui_filter filter[] = {
gui_filter_input_default,
gui_filter_input_ascii,
gui_filter_input_float,
gui_filter_input_decimal,
gui_filter_input_hex,
gui_filter_input_oct,
gui_filter_input_binary,
};
return gui_edit_filtered(canvas, x, y, w, h, buffer, len, max, active,
field,filter[f], in, font);
}
gui_float
gui_scroll(const struct gui_canvas *canvas, gui_float x, gui_float y,
gui_float w, gui_float h, gui_float offset, gui_float target,
gui_float step, const struct gui_scroll *scroll, const struct gui_input *in)
{
gui_bool button_up_pressed;
gui_bool button_down_pressed;
struct gui_button button;
gui_float scroll_step;
gui_float scroll_offset;
gui_float scroll_off, scroll_ratio;
gui_float scroll_y, scroll_w, scroll_h;
gui_float cursor_x, cursor_y;
gui_float cursor_w, cursor_h;
gui_bool inscroll, incursor;
ASSERT(canvas);
ASSERT(scroll);
if (!canvas || !scroll) return 0;
scroll_w = MAX(w, 0);
scroll_h = MAX(h, 2 * scroll_w);
canvas->draw_rect(canvas->userdata, x, y, scroll_w, scroll_h, scroll->background);
if (target <= scroll_h) return 0;
button.border = 1;
button.padding.x = scroll_w / 4;
button.padding.y = scroll_w / 4;
button.background = scroll->background;
button.foreground = scroll->foreground;
button.content = scroll->foreground;
button.highlight = scroll->background;
button.highlight_content = scroll->foreground;
button_up_pressed = gui_button_triangle(canvas, x, y, scroll_w, scroll_w,
GUI_UP, GUI_BUTTON_DEFAULT, &button, in);
button_down_pressed = gui_button_triangle(canvas, x, y + scroll_h - scroll_w,
scroll_w, scroll_w, GUI_DOWN, GUI_BUTTON_DEFAULT, &button, in);
scroll_h = scroll_h - 2 * scroll_w;
scroll_y = y + scroll_w;
scroll_step = MIN(step, scroll_h);
scroll_offset = MIN(offset, target - scroll_h);
scroll_ratio = scroll_h / target;
scroll_off = scroll_offset / target;
cursor_h = scroll_ratio * scroll_h;
cursor_y = scroll_y + (scroll_off * scroll_h);
cursor_w = scroll_w;
cursor_x = x;
if (in) {
inscroll = INBOX(in->mouse_pos.x,in->mouse_pos.y, x, y, scroll_w, scroll_h);
incursor = INBOX(in->mouse_prev.x,in->mouse_prev.y,cursor_x,cursor_y,cursor_w, cursor_h);
if (in->mouse_down && inscroll && incursor) {
const gui_float pixel = in->mouse_delta.y;
const gui_float delta = (pixel / scroll_h) * target;
scroll_offset = CLAMP(0, scroll_offset + delta, target - scroll_h);
cursor_y += pixel;
} else if (button_up_pressed || button_down_pressed) {
scroll_offset = (button_down_pressed) ?
MIN(scroll_offset + scroll_step, target - scroll_h):
MAX(0, scroll_offset - scroll_step);
scroll_off = scroll_offset / target;
cursor_y = scroll_y + (scroll_off * scroll_h);
}
}
canvas->draw_rect(canvas->userdata,cursor_x,cursor_y,cursor_w,cursor_h,scroll->foreground);
return scroll_offset;
}
void*
gui_buffer_push(struct gui_command_buffer* buffer,
enum gui_command_type type, gui_size size)
{
static const gui_size align = ALIGNOF(struct gui_command);
struct gui_command *cmd;
gui_size alignment;
void *unaligned;
void *tail;
ASSERT(buffer);
ASSERT(!(buffer->flags & GUI_BUFFER_LOCKED));
if (!buffer || buffer->flags & GUI_BUFFER_LOCKED) return NULL;
buffer->needed += size;
unaligned = (gui_byte*)buffer->end + size;
tail = ALIGN_PTR(unaligned, align);
alignment = (gui_size)((gui_byte*)tail - (gui_byte*)unaligned);
if ((buffer->allocated + size + alignment) >= buffer->capacity) {
gui_size cap;
if (!buffer->allocator.realloc) return NULL;
cap = (gui_size)((gui_float)buffer->capacity * buffer->grow_factor);
buffer->memory = buffer->allocator.realloc(buffer->allocator.userdata,buffer->memory, cap);
if (!buffer->memory) return NULL;
buffer->capacity = cap;
buffer->begin = buffer->memory;
buffer->end = (void*)((gui_byte*)buffer->begin + buffer->allocated);
unaligned = (gui_byte*)buffer->end + size;
tail = ALIGN_PTR(unaligned, align);
alignment = (gui_size)((gui_byte*)tail - (gui_byte*)unaligned);
}
cmd = buffer->end;
cmd->type = type;
cmd->offset = size + alignment;
cmd->offset = ALIGN(cmd->offset, align);
buffer->end = tail;
buffer->allocated += size + alignment;
buffer->needed += alignment;
buffer->count++;
return cmd;
}
void
gui_buffer_push_scissor(struct gui_command_buffer *buffer, gui_float x, gui_float y,
gui_float w, gui_float h)
{
struct gui_command_scissor *cmd;
ASSERT(buffer);
ASSERT(!(buffer->flags & GUI_BUFFER_LOCKED));
if (!buffer || buffer->flags & GUI_BUFFER_LOCKED) return;
cmd = gui_buffer_push(buffer, GUI_COMMAND_SCISSOR, sizeof(*cmd));
if (!cmd) return;
buffer->clip.x = x;
buffer->clip.y = y;
buffer->clip.w = w;
buffer->clip.h = h;
cmd->x = (gui_short)x;
cmd->y = (gui_short)y;
cmd->w = (gui_ushort)MAX(0, w);
cmd->h = (gui_ushort)MAX(0, h);
}
void
gui_buffer_push_line(struct gui_command_buffer *buffer, gui_float x0, gui_float y0,
gui_float x1, gui_float y1, struct gui_color c)
{
struct gui_command_line *cmd;
ASSERT(buffer);
ASSERT(!(buffer->flags & GUI_BUFFER_LOCKED));
if (!buffer || buffer->flags & GUI_BUFFER_LOCKED) return;
cmd = gui_buffer_push(buffer, GUI_COMMAND_LINE, sizeof(*cmd));
if (!cmd) return;
cmd->begin[0] = (gui_short)x0;
cmd->begin[1] = (gui_short)y0;
cmd->end[0] = (gui_short)x1;
cmd->end[1] = (gui_short)y1;
cmd->color = c;
}
void
gui_buffer_push_rect(struct gui_command_buffer *buffer, gui_float x, gui_float y,
gui_float w, gui_float h, struct gui_color c)
{
struct gui_command_rect *cmd;
ASSERT(buffer);
ASSERT(!(buffer->flags & GUI_BUFFER_LOCKED));
if (!buffer || buffer->flags & GUI_BUFFER_LOCKED) return;
if (buffer->flags & GUI_BUFFER_CLIPPING) {
const struct gui_rect *r = &buffer->clip;
if (!INTERSECT(r->x, r->y, r->w, r->h, x, y, w, h)) {
buffer->clipped_memory += sizeof(*cmd);
buffer->clipped_cmds++;
return;
}
}
cmd = gui_buffer_push(buffer, GUI_COMMAND_RECT, sizeof(*cmd));
if (!cmd) return;
cmd->x = (gui_short)x;
cmd->y = (gui_short)y;
cmd->w = (gui_ushort)MAX(0, w);
cmd->h = (gui_ushort)MAX(0, h);
cmd->color = c;
}
void
gui_buffer_push_circle(struct gui_command_buffer *buffer, gui_float x, gui_float y,
gui_float w, gui_float h, struct gui_color c)
{
struct gui_command_circle *cmd;
ASSERT(buffer);
ASSERT(!(buffer->flags & GUI_BUFFER_LOCKED));
if (!buffer || buffer->flags & GUI_BUFFER_LOCKED) return;
if (buffer->flags & GUI_BUFFER_CLIPPING) {
const struct gui_rect *r = &buffer->clip;
if (!INTERSECT(r->x, r->y, r->w, r->h, x, y, w, h)) {
buffer->clipped_memory += sizeof(*cmd);
buffer->clipped_cmds++;
return;
}
}
cmd = gui_buffer_push(buffer, GUI_COMMAND_CIRCLE, sizeof(*cmd));
if (!cmd) return;
cmd->x = (gui_short)x;
cmd->y = (gui_short)y;
cmd->w = (gui_ushort)MAX(w, 0);
cmd->h = (gui_ushort)MAX(h, 0);
cmd->color = c;
}
void
gui_buffer_push_triangle(struct gui_command_buffer *buffer, gui_float x0, gui_float y0,
gui_float x1, gui_float y1, gui_float x2, gui_float y2, struct gui_color c)
{
struct gui_command_triangle *cmd;
ASSERT(buffer);
ASSERT(!(buffer->flags & GUI_BUFFER_LOCKED));
if (!buffer || buffer->flags & GUI_BUFFER_LOCKED) return;
if (buffer->flags & GUI_BUFFER_CLIPPING) {
const struct gui_rect *r = &buffer->clip;
if (!INBOX(x0, y0, r->x, r->y, r->w, r->h) &&
!INBOX(x1, y1, r->x, r->y, r->w, r->h) &&
!INBOX(x2, y2, r->x, r->y, r->w, r->h)) {
buffer->clipped_memory += sizeof(*cmd);
buffer->clipped_cmds++;
return;
}
}
cmd = gui_buffer_push(buffer, GUI_COMMAND_TRIANGLE, sizeof(*cmd));
if (!cmd) return;
cmd->a[0] = (gui_short)x0;
cmd->a[1] = (gui_short)y0;
cmd->b[0] = (gui_short)x1;
cmd->b[1] = (gui_short)y1;
cmd->c[0] = (gui_short)x2;
cmd->c[1] = (gui_short)y2;
cmd->color = c;
}
void
gui_buffer_push_image(struct gui_command_buffer *buffer, gui_float x, gui_float y,
gui_float w, gui_float h, gui_image img)
{
struct gui_command_image *cmd;
ASSERT(buffer);
ASSERT(!(buffer->flags & GUI_BUFFER_LOCKED));
if (!buffer || buffer->flags & GUI_BUFFER_LOCKED) return;
if (buffer->flags == GUI_BUFFER_CLIPPING) {
const struct gui_rect *r = &buffer->clip;
if (!INTERSECT(r->x, r->y, r->w, r->h, x, y, w, h)) {
buffer->clipped_memory += sizeof(*cmd);
buffer->clipped_cmds++;
return;
}
}
cmd = gui_buffer_push(buffer, GUI_COMMAND_IMAGE, sizeof(*cmd));
if (!cmd) return;
cmd->x = (gui_short)x;
cmd->y = (gui_short)y;
cmd->w = (gui_ushort)MAX(0, w);
cmd->h = (gui_ushort)MAX(0, h);
cmd->img = img;
}
void
gui_buffer_push_text(struct gui_command_buffer *buffer, gui_float x, gui_float y,
gui_float w, gui_float h, const gui_char *string, gui_size length,
const struct gui_font *font, struct gui_color bg, struct gui_color fg)
{
struct gui_command_text *cmd;
ASSERT(buffer);
ASSERT(font);
ASSERT(!(buffer->flags & GUI_BUFFER_LOCKED));
if (!buffer || !string || !length) return;
if (buffer->flags & GUI_BUFFER_LOCKED) return;
if (buffer->flags & GUI_BUFFER_CLIPPING) {
const struct gui_rect *r = &buffer->clip;
if (!INTERSECT(r->x, r->y, r->w, r->h, x, y, w, h)) {
buffer->clipped_memory += sizeof(*cmd);
buffer->clipped_cmds++;
return;
}
}
cmd = gui_buffer_push(buffer, GUI_COMMAND_TEXT, sizeof(*cmd) + length + 1);
if (!cmd) return;
cmd->x = (gui_short)x;
cmd->y = (gui_short)y;
cmd->w = (gui_ushort)w;
cmd->h = (gui_ushort)h;
cmd->bg = bg;
cmd->fg = fg;
cmd->font = font->userdata;
cmd->length = length;
memcopy(cmd->string, string, length);
cmd->string[length] = '\0';
}
void
gui_buffer_init_fixed(struct gui_command_buffer *buffer, const struct gui_memory *memory,
gui_flags clipping)
{
ASSERT(buffer);
ASSERT(memory);
if (!buffer || !memory) return;
zero(buffer, sizeof(*buffer));
buffer->flags = GUI_BUFFER_OWNER;
if (clipping) buffer->flags |= GUI_BUFFER_CLIPPING;
buffer->memory = memory->memory;
buffer->capacity = memory->size;
buffer->begin = buffer->memory;
buffer->end = buffer->begin;
buffer->clip = null_rect;
buffer->grow_factor = 0;
}
void
gui_buffer_init(struct gui_command_buffer *buffer, const struct gui_allocator *memory,
gui_size initial_size, gui_float grow_factor, gui_flags clipping)
{
ASSERT(buffer);
ASSERT(memory);
ASSERT(initial_size);
if (!buffer || !memory || !initial_size) return;
zero(buffer, sizeof(*buffer));
buffer->flags = GUI_BUFFER_OWNER;
if (clipping) buffer->flags |= GUI_BUFFER_CLIPPING;
buffer->memory = memory->alloc(memory->userdata, initial_size);
buffer->allocator = *memory;
buffer->capacity = initial_size;
buffer->begin = buffer->memory;
buffer->end = buffer->begin;
buffer->grow_factor = grow_factor;
buffer->clip = null_rect;
}
void
gui_buffer_lock(struct gui_canvas *canvas, struct gui_command_buffer *buffer,
struct gui_command_buffer *sub, gui_flags clipping, gui_size width, gui_size height)
{
static const gui_size align = ALIGNOF(struct gui_command);
ASSERT(buffer);
ASSERT(sub);
ASSERT(!(buffer->flags & GUI_BUFFER_LOCKED));
if (!buffer || !sub || (buffer->flags & GUI_BUFFER_LOCKED)) return;
buffer->flags |= GUI_BUFFER_LOCKED;
sub->flags = GUI_BUFFER_DEFAULT;
if (clipping) sub->flags |= GUI_BUFFER_CLIPPING;
sub->memory = buffer->memory;
sub->allocator = buffer->allocator;
sub->begin = buffer->end;
sub->end = sub->begin;
sub->grow_factor = buffer->grow_factor;
sub->allocated = buffer->allocated;
sub->capacity = buffer->capacity;
sub->sub_size = sub->allocated;
sub->sub_cap = sub->capacity;
sub->needed = 0;
sub->count = 0;
gui_buffer_begin(canvas, sub, width, height);
}
void
gui_buffer_unlock(struct gui_command_list *list, struct gui_command_buffer *buffer,
struct gui_command_buffer *sub, struct gui_canvas *canvas,
struct gui_memory_status *status)
{
ASSERT(buffer);
ASSERT(sub);
if (!buffer || !sub) return;
buffer->flags &= (gui_flags)~GUI_BUFFER_LOCKED;
buffer->end = sub->end;
buffer->allocated = sub->allocated;
buffer->capacity = sub->capacity;
buffer->count += sub->count;
buffer->needed += sub->needed;
sub->flags = GUI_BUFFER_LOCKED;
gui_buffer_end(list, sub, canvas, status);
zero(sub, sizeof(*sub));
}
void
gui_buffer_begin(struct gui_canvas *canvas, struct gui_command_buffer *buffer,
gui_size width, gui_size height)
{
ASSERT(buffer);
ASSERT(buffer->memory);
ASSERT(buffer->begin == buffer->end);
if (!canvas || !buffer) return;
canvas->userdata = buffer;
canvas->width = width;
canvas->height = height;
canvas->scissor = (gui_scissor)gui_buffer_push_scissor;
canvas->draw_line = (gui_draw_line)gui_buffer_push_line;
canvas->draw_rect = (gui_draw_rect)gui_buffer_push_rect;
canvas->draw_circle = (gui_draw_circle)gui_buffer_push_circle;
canvas->draw_triangle = (gui_draw_triangle)gui_buffer_push_triangle;
canvas->draw_text = (gui_draw_text)gui_buffer_push_text;
}
void
gui_buffer_end(struct gui_command_list *list, struct gui_command_buffer *buffer,
struct gui_canvas *canvas, struct gui_memory_status *status)
{
ASSERT(buffer);
if (!buffer) return;
if (status) {
status->allocated = (!(buffer->flags & GUI_BUFFER_OWNER)) ?
buffer->allocated - buffer->sub_size: buffer->allocated;
status->size = (!(buffer->flags & GUI_BUFFER_OWNER)) ?
buffer->capacity - buffer->sub_cap: buffer->capacity;
status->needed = buffer->needed;
status->clipped_commands = buffer->clipped_cmds;
status->clipped_memory = buffer->clipped_memory;
}
if (list) {
list->count = buffer->count;
list->begin = buffer->begin;
list->end = buffer->end;
}
buffer->begin = buffer->memory;
buffer->end = buffer->begin;
buffer->needed = 0;
buffer->allocated = 0;
buffer->count = 0;
buffer->clip = null_rect;
buffer->clipped_cmds = 0;
buffer->clipped_memory = 0;
if (canvas) zero(canvas, sizeof(*canvas));
}
void
gui_buffer_clear(struct gui_command_buffer *buffer)
{
ASSERT(buffer);
if (!buffer || !buffer->memory || !buffer->allocator.free) return;
if (!(buffer->flags & GUI_BUFFER_OWNER)) return;
if (buffer->flags & GUI_BUFFER_LOCKED) return;
buffer->allocator.free(buffer->allocator.userdata, buffer->memory);
}
const struct gui_command*
gui_list_begin(const struct gui_command_list *list)
{
const struct gui_command *cmd;
ASSERT(list);
if (!list || !list->count) return NULL;
cmd = list->begin;
return cmd;
}
const struct gui_command*
gui_list_next(const struct gui_command_list *list, const struct gui_command *cmd)
{
ASSERT(list);
ASSERT(cmd);
if (!list || !list->count || !cmd) return NULL;
cmd = (const void*)((const gui_byte*)cmd + cmd->offset);
if (cmd >= list->end) return NULL;
return cmd;
}
void
gui_default_config(struct gui_config *config)
{
ASSERT(config);
if (!config) return;
config->scrollbar_width = 16;
vec2_load(config->panel_padding, 15.0f, 10.0f);
vec2_load(config->panel_min_size, 64.0f, 64.0f);
vec2_load(config->item_spacing, 10.0f, 4.0f);
vec2_load(config->item_padding, 4.0f, 4.0f);
vec2_load(config->scaler_size, 16.0f, 16.0f);
col_load(config->colors[GUI_COLOR_TEXT], 100, 100, 100, 255);
col_load(config->colors[GUI_COLOR_PANEL], 45, 45, 45, 255);
col_load(config->colors[GUI_COLOR_HEADER], 45, 45, 45, 255);
col_load(config->colors[GUI_COLOR_BORDER], 100, 100, 100, 255);
col_load(config->colors[GUI_COLOR_BUTTON], 50, 50, 50, 255);
col_load(config->colors[GUI_COLOR_BUTTON_HOVER], 100, 100, 100, 255);
col_load(config->colors[GUI_COLOR_BUTTON_TOGGLE], 75, 75, 75, 255);
col_load(config->colors[GUI_COLOR_BUTTON_HOVER_FONT], 45, 45, 45, 255);
col_load(config->colors[GUI_COLOR_BUTTON_BORDER], 100, 100, 100, 255);
col_load(config->colors[GUI_COLOR_CHECK], 100, 100, 100, 255);
col_load(config->colors[GUI_COLOR_CHECK_BACKGROUND], 45, 45, 45, 255);
col_load(config->colors[GUI_COLOR_CHECK_ACTIVE], 45, 45, 45, 255);
col_load(config->colors[GUI_COLOR_OPTION], 100, 100, 100, 255);
col_load(config->colors[GUI_COLOR_OPTION_BACKGROUND], 45, 45, 45, 255);
col_load(config->colors[GUI_COLOR_OPTION_ACTIVE], 45, 45, 45, 255);
col_load(config->colors[GUI_COLOR_SLIDER], 100, 100, 100, 255);
col_load(config->colors[GUI_COLOR_SLIDER_CURSOR], 45, 45, 45, 255);
col_load(config->colors[GUI_COLOR_PROGRESS], 100, 100, 100, 255);
col_load(config->colors[GUI_COLOR_PROGRESS_CURSOR], 45, 45, 45, 255);
col_load(config->colors[GUI_COLOR_INPUT], 45, 45, 45, 255);
col_load(config->colors[GUI_COLOR_INPUT_CURSOR], 45, 45, 45, 255);
col_load(config->colors[GUI_COLOR_INPUT_BORDER], 100, 100, 100, 255);
col_load(config->colors[GUI_COLOR_SPINNER], 45, 45, 45, 255);
col_load(config->colors[GUI_COLOR_SPINNER_BORDER], 100, 100, 100, 255);
col_load(config->colors[GUI_COLOR_SELECTOR], 45, 45, 45, 255);
col_load(config->colors[GUI_COLOR_SELECTOR_BORDER], 100, 100, 100, 255);
col_load(config->colors[GUI_COLOR_HISTO], 120, 120, 120, 255);
col_load(config->colors[GUI_COLOR_HISTO_BARS], 45, 45, 45, 255);
col_load(config->colors[GUI_COLOR_HISTO_NEGATIVE], 255, 255, 255, 255);
col_load(config->colors[GUI_COLOR_HISTO_HIGHLIGHT], 255, 0, 0, 255);
col_load(config->colors[GUI_COLOR_PLOT], 100, 100, 100, 255);
col_load(config->colors[GUI_COLOR_PLOT_LINES], 45, 45, 45, 255);
col_load(config->colors[GUI_COLOR_PLOT_HIGHLIGHT], 255, 0, 0, 255);
col_load(config->colors[GUI_COLOR_SCROLLBAR], 40, 40, 40, 255);
col_load(config->colors[GUI_COLOR_SCROLLBAR_CURSOR], 70, 70, 70, 255);
col_load(config->colors[GUI_COLOR_SCROLLBAR_BORDER], 45, 45, 45, 255);
col_load(config->colors[GUI_COLOR_TABLE_LINES], 100, 100, 100, 255);
col_load(config->colors[GUI_COLOR_SHELF], 45, 45, 45, 255);
col_load(config->colors[GUI_COLOR_SHELF_TEXT], 100, 100, 100, 255);
col_load(config->colors[GUI_COLOR_SHELF_ACTIVE], 50, 50, 50, 255);
col_load(config->colors[GUI_COLOR_SHELF_ACTIVE_TEXT], 100, 100, 100, 255);
col_load(config->colors[GUI_COLOR_SCALER], 100, 100, 100, 255);
}
void
gui_panel_init(struct gui_panel *panel, gui_float x, gui_float y, gui_float w,
gui_float h, gui_flags flags, const struct gui_config *config, const struct gui_font *font)
{
ASSERT(panel);
ASSERT(config);
ASSERT(font);
if (!panel || !config || !font)
return;
panel->x = x;
panel->y = y;
panel->w = w;
panel->h = h;
panel->flags = flags;
panel->config = config;
panel->font = *font;
panel->offset = 0;
panel->minimized = gui_false;
}
gui_bool
gui_panel_begin(struct gui_panel_layout *layout, struct gui_panel *panel,
const char *text, const struct gui_canvas *canvas, const struct gui_input *in)
{
const struct gui_config *config;
const struct gui_color *header;
gui_float mouse_x, mouse_y;
gui_float prev_x, prev_y;
gui_float clicked_x, clicked_y;
gui_float header_x = 0, header_w = 0;
gui_float footer_h;
gui_bool ret = gui_true;
ASSERT(panel);
ASSERT(layout);
ASSERT(canvas);
/* check arguments */
if (!panel || !canvas || !layout)
return gui_false;
if (panel->flags & GUI_PANEL_HIDDEN) {
zero(layout, sizeof(*layout));
layout->valid = gui_false;
layout->config = panel->config;
layout->canvas = canvas;
return gui_false;
}
/* calculate header */
config = panel->config;
layout->header_height = panel->font.height + 3 * config->item_padding.y;
layout->header_height += config->panel_padding.y;
/* make sure input can be NULL */
mouse_x = (in) ? in->mouse_pos.x : -1;
mouse_y = (in) ? in->mouse_pos.y : -1;
prev_x = (in) ? in->mouse_prev.x : -1;
prev_y = (in) ? in->mouse_prev.y : -1;
clicked_x = (in) ? in->mouse_clicked_pos.x : -1;
clicked_y = (in) ? in->mouse_clicked_pos.y : -1;
/* panel movement logic */
if (panel->flags & GUI_PANEL_MOVEABLE) {
gui_bool incursor;
const gui_float move_x = panel->x;
const gui_float move_y = panel->y;
const gui_float move_w = panel->w;
const gui_float move_h = layout->header_height;
incursor = in && INBOX(in->mouse_prev.x,in->mouse_prev.y, move_x, move_y, move_w, move_h);
if (in && in->mouse_down && incursor) {
panel->x = CLAMP(0, panel->x+in->mouse_delta.x, (gui_float)canvas->width-panel->w);
panel->y = CLAMP(0, panel->y+in->mouse_delta.y, (gui_float)canvas->height-panel->h);
}
}
/* panel scaling logic */
if (panel->flags & GUI_PANEL_SCALEABLE) {
gui_bool incursor;
gui_float scaler_w = MAX(0, config->scaler_size.x - config->item_padding.x);
gui_float scaler_h = MAX(0, config->scaler_size.y - config->item_padding.y);
gui_float scaler_x = (panel->x + panel->w) - (config->item_padding.x + scaler_w);
gui_float scaler_y = panel->y + panel->h - config->scaler_size.y;
incursor = in && INBOX(prev_x, prev_y, scaler_x, scaler_y, scaler_w, scaler_h);
if (in && in->mouse_down && incursor) {
gui_float min_x = config->panel_min_size.x;
gui_float min_y = config->panel_min_size.y;
panel->w = CLAMP(min_x, panel->w+in->mouse_delta.x, (gui_float)canvas->width-panel->x);
panel->h = CLAMP(min_y,panel->h+in->mouse_delta.y,(gui_float)canvas->height-panel->y);
}
}
/* setup layout */
layout->x = panel->x;
layout->y = panel->y;
layout->w = panel->w;
layout->h = panel->h;
layout->at_x = panel->x;
layout->at_y = panel->y;
layout->width = panel->w;
layout->height = panel->h;
layout->font = panel->font;
layout->config = panel->config;
layout->canvas = canvas;
layout->input = in;
layout->index = 0;
layout->row_columns = 0;
layout->row_height = 0;
layout->offset = panel->offset;
/* special case for shelfs which do not have a header */
if (!(panel->flags & GUI_PANEL_NO_HEADER)) {
header = &config->colors[GUI_COLOR_HEADER];
header_x = panel->x + config->panel_padding.x;
header_w = panel->w - 2 * config->panel_padding.x;
canvas->draw_rect(canvas->userdata, panel->x, panel->y, panel->w,
layout->header_height, *header);
} else layout->header_height = 1;
layout->row_height = layout->header_height + 2 * config->item_spacing.y;
/* add footer at the end of the panel */
footer_h = config->scaler_size.y + config->item_padding.y;
if ((panel->flags & GUI_PANEL_SCROLLBAR) && !panel->minimized) {
gui_float footer_x, footer_y, footer_w;
footer_x = panel->x;
footer_w = panel->w;
footer_y = panel->y + panel->h - footer_h;
canvas->draw_rect(canvas->userdata, footer_x, footer_y, footer_w, footer_h,
config->colors[GUI_COLOR_PANEL]);
}
/* update panel state which is either active or not active */
if (!(panel->flags & GUI_PANEL_TAB)) {
panel->flags |= GUI_PANEL_SCROLLBAR;
if (in && in->mouse_down) {
if (!INBOX(clicked_x, clicked_y, panel->x, panel->y, panel->w, panel->h))
panel->flags &= (gui_flag)~GUI_PANEL_ACTIVE;
else panel->flags |= GUI_PANEL_ACTIVE;
}
}
/* clipping rectangle for scrollbars */
layout->clip.x = panel->x;
layout->clip.w = panel->w;
layout->clip.y = panel->y + layout->header_height - 1;
if (panel->flags & GUI_PANEL_SCROLLBAR) {
layout->clip.h = panel->h - (footer_h + layout->header_height);
layout->clip.h -= (config->panel_padding.y + config->item_padding.y);
}
else layout->clip.h = null_rect.h;
/* panel hidding */
if ((panel->flags & GUI_PANEL_CLOSEABLE) && (!(panel->flags & GUI_PANEL_NO_HEADER))) {
const gui_char *X = (const gui_char*)"x";
const gui_size text_width = panel->font.width(panel->font.userdata, X, 1);
const gui_float close_x = header_x;
const gui_float close_y = panel->y + config->panel_padding.y;
const gui_float close_w = (gui_float)text_width + 2 * config->item_padding.x;
const gui_float close_h = panel->font.height + 2 * config->item_padding.y;
canvas->draw_text(canvas->userdata, close_x, close_y, close_w, close_h,
X, 1, &panel->font, config->colors[GUI_COLOR_HEADER], config->colors[GUI_COLOR_TEXT]);
header_w -= close_w;
header_x += close_h - config->item_padding.x;
if (in && INBOX(mouse_x, mouse_y, close_x, close_y, close_w, close_h)) {
if (INBOX(clicked_x, clicked_y, close_x, close_y, close_w, close_h)) {
ret = !(in->mouse_down && in->mouse_clicked);
if (!ret) panel->flags |= GUI_PANEL_HIDDEN;
}
}
}
/* panel minimizing */
if ((panel->flags & GUI_PANEL_MINIMIZABLE) && (!(panel->flags & GUI_PANEL_NO_HEADER))) {
gui_size text_width;
gui_float min_x, min_y, min_w, min_h;
const gui_char *score = (panel->minimized) ?
(const gui_char*)"+":
(const gui_char*)"-";
text_width = panel->font.width(panel->font.userdata, score, 1);
min_x = header_x;
min_y = panel->y + config->panel_padding.y;
min_w = (gui_float)text_width + 3 * config->item_padding.x;
min_h = panel->font.height + 2 * config->item_padding.y;
canvas->draw_text(canvas->userdata, min_x, min_y, min_w, min_h,
score, 1, &panel->font, config->colors[GUI_COLOR_HEADER],
config->colors[GUI_COLOR_TEXT]);
header_w -= min_w;
header_x += min_w - config->item_padding.x;
if (in && INBOX(mouse_x, mouse_y, min_x, min_y, min_w, min_h)) {
if (INBOX(clicked_x, clicked_y, min_x, min_y, min_w, min_h))
if (in->mouse_down && in->mouse_clicked)
panel->minimized = !panel->minimized;
}
}
layout->valid = !(panel->minimized || (panel->flags & GUI_PANEL_HIDDEN));
/* panel title */
if (text && !(panel->flags & GUI_PANEL_NO_HEADER)) {
const gui_size text_len = strsiz(text);
const gui_float label_x = header_x + config->item_padding.x;
const gui_float label_y = panel->y + config->panel_padding.y;
const gui_float label_w = header_w - (3 * config->item_padding.x);
const gui_float label_h = panel->font.height + 2 * config->item_padding.y;
canvas->draw_text(canvas->userdata, label_x, label_y, label_w, label_h,
(const gui_char*)text, text_len, &panel->font, config->colors[GUI_COLOR_HEADER],
config->colors[GUI_COLOR_TEXT]);
}
/* panels have an empty space at the bottom that needs to be filled */
if (panel->flags & GUI_PANEL_SCROLLBAR) {
const struct gui_color *color = &config->colors[GUI_COLOR_PANEL];
layout->width = panel->w - config->scrollbar_width;
layout->height = panel->h - (layout->header_height + 2 * config->item_spacing.y);
layout->height -= footer_h;
if (layout->valid)
canvas->draw_rect(canvas->userdata, panel->x, panel->y + layout->header_height,
panel->w, panel->h - layout->header_height, *color);
}
/* draws the border of the header */
if (panel->flags & GUI_PANEL_BORDER) {
const struct gui_color *color = &config->colors[GUI_COLOR_BORDER];
const gui_float width = (panel->flags & GUI_PANEL_SCROLLBAR) ?
layout->width + config->scrollbar_width : layout->width;
canvas->draw_line(canvas->userdata, panel->x, panel->y,
panel->x + panel->w, panel->y, *color);
canvas->draw_line(canvas->userdata, panel->x, panel->y, panel->x,
panel->y + layout->header_height, config->colors[GUI_COLOR_BORDER]);
canvas->draw_line(canvas->userdata, panel->x + width, panel->y, panel->x + width,
panel->y + layout->header_height, config->colors[GUI_COLOR_BORDER]);
if (panel->flags & GUI_PANEL_BORDER_HEADER)
canvas->draw_line(canvas->userdata, panel->x, panel->y + layout->header_height,
panel->x + panel->w, panel->y + layout->header_height, config->colors[GUI_COLOR_BORDER]);
}
canvas->scissor(canvas->userdata,layout->clip.x,layout->clip.y,layout->clip.w,layout->clip.h);
return ret;
}
gui_bool
gui_panel_hook_begin_stacked(struct gui_panel_layout *layout, struct gui_panel_hook *hook,
struct gui_panel_stack *stack, const char *title, const struct gui_canvas *canvas,
const struct gui_input *in)
{
gui_bool inpanel;
struct gui_panel* panel;
ASSERT(layout);
ASSERT(hook);
ASSERT(stack);
ASSERT(canvas);
if (!layout || !hook || !stack || !canvas)
return gui_false;
panel = gui_hook_panel(hook);
inpanel = INBOX(in->mouse_prev.x, in->mouse_prev.y, panel->x, panel->y, panel->w, panel->h);
if (in->mouse_down && in->mouse_clicked && inpanel && hook != stack->end) {
const struct gui_panel_hook *iter = hook->next;
while (iter) {
const struct gui_panel *cur = gui_hook_panel(iter);
if (INBOX(in->mouse_prev.x, in->mouse_prev.y, cur->x, cur->y, cur->w, cur->h) &&
!cur->minimized) break;
iter = iter->next;
}
if (!iter) {
gui_stack_pop(stack, hook);
gui_stack_push(stack, hook);
}
}
return gui_panel_begin(layout, panel, title, canvas, (stack->end == hook) ? in : NULL);
}
gui_bool
gui_panel_hook_begin_tiled(struct gui_panel_layout *tile, struct gui_panel_hook *hook,
struct gui_layout *layout, enum gui_layout_slot slot, gui_size index,
const char *title, const struct gui_canvas *canvas, const struct gui_input *in)
{
struct gui_rect bounds;
struct gui_panel *panel;
ASSERT(hook);
ASSERT(tile);
ASSERT(layout);
ASSERT(canvas);
if (!layout || !hook || !tile || !canvas) return gui_false;
if (slot >= GUI_SLOT_MAX) return gui_false;
if (index >= layout->capacity[slot]) return gui_false;
panel = gui_hook_panel(hook);
panel->flags &= (gui_size)~GUI_PANEL_MINIMIZABLE;
panel->flags &= (gui_size)~GUI_PANEL_CLOSEABLE;
panel->flags &= (gui_size)~GUI_PANEL_MOVEABLE;
panel->flags &= (gui_size)~GUI_PANEL_SCALEABLE;
bounds.x = layout->offset[slot].x * layout->width;
bounds.y = layout->offset[slot].y * layout->height;
bounds.w = layout->ratio[slot].x * layout->width;
bounds.h = layout->ratio[slot].y * layout->height;
panel->x = bounds.x;
panel->w = bounds.w;
panel->h = bounds.h / layout->capacity[slot];
panel->y = bounds.y + index * panel->h;
gui_stack_push(&layout->stack, hook);
return gui_panel_begin(tile, panel, title, canvas, (layout->active) ? in : NULL);
}
void
gui_panel_row(struct gui_panel_layout *layout, gui_float height, gui_size cols)
{
const struct gui_config *config;
const struct gui_color *color;
ASSERT(layout);
if (!layout) return;
if (!layout->valid) return;
ASSERT(layout->config);
ASSERT(layout->canvas);
config = layout->config;
color = &config->colors[GUI_COLOR_PANEL];
layout->index = 0;
layout->at_y += layout->row_height;
layout->row_columns = cols;
layout->row_height = height + config->item_spacing.y;
layout->canvas->draw_rect(layout->canvas->userdata, layout->at_x, layout->at_y,
layout->width, height + config->panel_padding.y, *color);
}
void
gui_panel_seperator(struct gui_panel_layout *layout, gui_size cols)
{
const struct gui_config *config;
ASSERT(layout);
ASSERT(layout->config);
ASSERT(layout->canvas);
if (!layout) return;
if (!layout->valid) return;
config = layout->config;
cols = MIN(cols, layout->row_columns - layout->index);
layout->index += cols;
}
static void
gui_panel_alloc_space(struct gui_rect *bounds, struct gui_panel_layout *layout)
{
const struct gui_config *config;
gui_float panel_padding, panel_spacing, panel_space;
gui_float item_offset, item_width, item_spacing;
ASSERT(layout);
ASSERT(layout->config);
ASSERT(bounds);
if (!layout || !layout->config || !bounds)
return;
config = layout->config;
if (layout->index >= layout->row_columns) {
const gui_float row_height = layout->row_height - config->item_spacing.y;
gui_panel_row(layout, row_height, layout->row_columns);
}
panel_padding = 2 * config->panel_padding.x;
panel_spacing = (gui_float)(layout->row_columns - 1) * config->item_spacing.x;
panel_space = layout->width - panel_padding - panel_spacing;
item_width = panel_space / (gui_float)layout->row_columns;
item_offset = (gui_float)layout->index * item_width;
item_spacing = (gui_float)layout->index * config->item_spacing.x;
bounds->x = layout->at_x + item_offset + item_spacing + config->panel_padding.x;
bounds->y = layout->at_y - layout->offset;
bounds->w = item_width;
bounds->h = layout->row_height - config->item_spacing.y;
layout->index++;
}
gui_bool
gui_panel_widget(struct gui_rect *bounds, struct gui_panel_layout *layout)
{
struct gui_rect *c;
ASSERT(layout);
ASSERT(layout->config);
ASSERT(layout->canvas);
if (!layout || !layout->config || !layout->canvas) return gui_false;
if (!layout->valid) return gui_false;
gui_panel_alloc_space(bounds, layout);
c = &layout->clip;
if (!INTERSECT(c->x, c->y, c->w, c->h, bounds->x, bounds->y, bounds->w, bounds->h))
return gui_false;
return gui_true;
}
void
gui_panel_text_colored(struct gui_panel_layout *layout, const char *str, gui_size len,
enum gui_text_align alignment, struct gui_color color)
{
struct gui_rect bounds;
struct gui_text text;
const struct gui_config *config;
ASSERT(layout);
ASSERT(layout->config);
ASSERT(layout->canvas);
ASSERT(str && len);
if (!layout || !layout->config || !layout->canvas) return;
if (!layout->valid) return;
gui_panel_alloc_space(&bounds, layout);
config = layout->config;
text.padding.x = config->item_padding.x;
text.padding.y = config->item_padding.y;
text.foreground = color;
text.background = config->colors[GUI_COLOR_PANEL];
gui_text(layout->canvas,bounds.x,bounds.y,bounds.w,bounds.h, str, len,
&text, alignment, &layout->font);
}
void
gui_panel_text(struct gui_panel_layout *layout, const char *str, gui_size len,
enum gui_text_align alignment)
{
gui_panel_text_colored(layout, str, len, alignment, layout->config->colors[GUI_COLOR_TEXT]);
}
void
gui_panel_label_colored(struct gui_panel_layout *layout, const char *text, enum gui_text_align align,
struct gui_color color)
{
gui_size len = strsiz(text);
gui_panel_text_colored(layout, text, len, align, color);
}
void
gui_panel_label(struct gui_panel_layout *layout, const char *text, enum gui_text_align align)
{
gui_size len = strsiz(text);
gui_panel_text(layout, text, len, align);
}
static gui_bool
gui_panel_button(struct gui_button *button, struct gui_rect *bounds,
struct gui_panel_layout *layout)
{
const struct gui_config *config;
if (!gui_panel_widget(bounds, layout)) return gui_false;
config = layout->config;
button->border = 1;
button->padding.x = config->item_padding.x;
button->padding.y = config->item_padding.y;
return gui_true;
}
gui_bool
gui_panel_button_text(struct gui_panel_layout *layout, const char *str,
enum gui_button_behavior behavior)
{
struct gui_rect bounds;
struct gui_button button;
const struct gui_config *config;
if (!gui_panel_button(&button, &bounds, layout))
return gui_false;
config = layout->config;
button.background = config->colors[GUI_COLOR_BUTTON];
button.foreground = config->colors[GUI_COLOR_BUTTON_BORDER];
button.content = config->colors[GUI_COLOR_TEXT];
button.highlight = config->colors[GUI_COLOR_BUTTON_HOVER];
button.highlight_content = config->colors[GUI_COLOR_BUTTON_HOVER_FONT];
return gui_button_text(layout->canvas, bounds.x, bounds.y, bounds.w, bounds.h,
str, behavior, &button, layout->input, &layout->font);
}
gui_bool gui_panel_button_color(struct gui_panel_layout *layout,
const struct gui_color color, enum gui_button_behavior behavior)
{
struct gui_rect bounds;
struct gui_button button;
if (!gui_panel_button(&button, &bounds, layout))
return gui_false;
button.background = color;
button.foreground = color;
button.highlight = color;
button.highlight_content = color;
return gui_do_button(layout->canvas, bounds.x, bounds.y, bounds.w, bounds.h,
&button, layout->input, behavior);
}
gui_bool
gui_panel_button_triangle(struct gui_panel_layout *layout, enum gui_heading heading,
enum gui_button_behavior behavior)
{
struct gui_rect bounds;
struct gui_button button;
const struct gui_config *config;
if (!gui_panel_button(&button, &bounds, layout))
return gui_false;
config = layout->config;
button.background = config->colors[GUI_COLOR_BUTTON];
button.foreground = config->colors[GUI_COLOR_BUTTON_BORDER];
button.content = config->colors[GUI_COLOR_TEXT];
button.highlight = config->colors[GUI_COLOR_BUTTON_HOVER];
button.highlight_content = config->colors[GUI_COLOR_BUTTON_HOVER_FONT];
return gui_button_triangle(layout->canvas, bounds.x, bounds.y, bounds.w,
bounds.h, heading, behavior, &button, layout->input);
}
gui_bool
gui_panel_button_image(struct gui_panel_layout *layout, gui_image image,
enum gui_button_behavior behavior)
{
struct gui_rect bounds;
struct gui_button button;
const struct gui_config *config;
if (!gui_panel_button(&button, &bounds, layout))
return gui_false;
config = layout->config;
button.background = config->colors[GUI_COLOR_BUTTON];
button.foreground = config->colors[GUI_COLOR_BUTTON_BORDER];
button.content = config->colors[GUI_COLOR_TEXT];
button.highlight = config->colors[GUI_COLOR_BUTTON_HOVER];
button.highlight_content = config->colors[GUI_COLOR_BUTTON_HOVER_FONT];
return gui_button_image(layout->canvas, bounds.x, bounds.y, bounds.w,
bounds.h, image, behavior, &button, layout->input);
}
gui_bool
gui_panel_button_toggle(struct gui_panel_layout *layout, const char *str, gui_bool value)
{
struct gui_rect bounds;
struct gui_button button;
const struct gui_config *config;
ASSERT(str);
if (!gui_panel_button(&button, &bounds, layout))
return gui_false;
config = layout->config;
if (!value) {
button.background = config->colors[GUI_COLOR_BUTTON];
button.foreground = config->colors[GUI_COLOR_BUTTON_BORDER];
button.content = config->colors[GUI_COLOR_TEXT];
button.highlight = config->colors[GUI_COLOR_BUTTON_HOVER];
button.highlight_content = config->colors[GUI_COLOR_BUTTON];
} else {
button.background = config->colors[GUI_COLOR_BUTTON_TOGGLE];
button.foreground = config->colors[GUI_COLOR_BUTTON_BORDER];
button.content = config->colors[GUI_COLOR_TEXT];
button.highlight = config->colors[GUI_COLOR_BUTTON_HOVER];
button.highlight_content = config->colors[GUI_COLOR_BUTTON];
}
if (gui_button_text(layout->canvas, bounds.x, bounds.y, bounds.w, bounds.h,
str, GUI_BUTTON_DEFAULT, &button, layout->input, &layout->font)) value = !value;
return value;
}
static gui_bool
gui_panel_toggle_base(struct gui_toggle *toggle, struct gui_rect *bounds,
struct gui_panel_layout *layout)
{
const struct gui_config *config;
if (!gui_panel_widget(bounds, layout))
return gui_false;
config = layout->config;
toggle->padding.x = config->item_padding.x;
toggle->padding.y = config->item_padding.y;
toggle->font = config->colors[GUI_COLOR_TEXT];
return gui_true;
}
gui_bool
gui_panel_check(struct gui_panel_layout *layout, const char *text, gui_bool is_active)
{
struct gui_rect bounds;
struct gui_toggle toggle;
const struct gui_config *config;
if (!text || !gui_panel_toggle_base(&toggle, &bounds, layout))
return is_active;
config = layout->config;
toggle.cursor = config->colors[GUI_COLOR_CHECK_ACTIVE];
toggle.background = config->colors[GUI_COLOR_CHECK_BACKGROUND];
toggle.foreground = config->colors[GUI_COLOR_CHECK];
return gui_toggle(layout->canvas, bounds.x, bounds.y, bounds.w, bounds.h,
is_active, text, GUI_TOGGLE_CHECK, &toggle, layout->input, &layout->font);
}
gui_bool
gui_panel_option(struct gui_panel_layout *layout, const char *text, gui_bool is_active)
{
struct gui_rect bounds;
struct gui_toggle toggle;
const struct gui_config *config;
if (!text || !gui_panel_toggle_base(&toggle, &bounds, layout))
return is_active;
config = layout->config;
toggle.cursor = config->colors[GUI_COLOR_OPTION_ACTIVE];
toggle.background = config->colors[GUI_COLOR_OPTION_BACKGROUND];
toggle.foreground = config->colors[GUI_COLOR_OPTION];
return gui_toggle(layout->canvas, bounds.x, bounds.y, bounds.w, bounds.h,
is_active, text, GUI_TOGGLE_OPTION, &toggle, layout->input, &layout->font);
}
gui_size
gui_panel_option_group(struct gui_panel_layout *layout, const char **options,
gui_size count, gui_size current)
{
gui_size i;
ASSERT(layout && options && count);
if (!layout || !options || !count) return current;
for (i = 0; i < count; ++i) {
if (gui_panel_option(layout, options[i], i == current))
current = i;
}
return current;
}
gui_float
gui_panel_slider(struct gui_panel_layout *layout, gui_float min_value, gui_float value,
gui_float max_value, gui_float value_step)
{
struct gui_rect bounds;
struct gui_slider slider;
const struct gui_config *config;
if (!gui_panel_widget(&bounds, layout))
return value;
config = layout->config;
slider.padding.x = config->item_padding.x;
slider.padding.y = config->item_padding.y;
slider.background = config->colors[GUI_COLOR_SLIDER];
slider.foreground = config->colors[GUI_COLOR_SLIDER_CURSOR];
return gui_slider(layout->canvas, bounds.x, bounds.y, bounds.w, bounds.h,
min_value, value, max_value, value_step, &slider, layout->input);
}
gui_size
gui_panel_progress(struct gui_panel_layout *layout, gui_size cur_value, gui_size max_value,
gui_bool is_modifyable)
{
struct gui_rect bounds;
struct gui_slider prog;
const struct gui_config *config;
if (!gui_panel_widget(&bounds, layout))
return cur_value;
config = layout->config;
prog.padding.x = config->item_padding.x;
prog.padding.y = config->item_padding.y;
prog.background = config->colors[GUI_COLOR_PROGRESS];
prog.foreground = config->colors[GUI_COLOR_PROGRESS_CURSOR];
return gui_progress(layout->canvas, bounds.x, bounds.y, bounds.w, bounds.h,
cur_value, max_value, is_modifyable, &prog, layout->input);
}
static gui_bool
gui_panel_edit_base(struct gui_rect *bounds, struct gui_edit *field,
struct gui_panel_layout *layout)
{
const struct gui_config *config;
if (!gui_panel_widget(bounds, layout))
return gui_false;
config = layout->config;
field->padding.x = config->item_padding.x;
field->padding.y = config->item_padding.y;
field->show_cursor = gui_true;
field->background = config->colors[GUI_COLOR_INPUT];
field->foreground = config->colors[GUI_COLOR_INPUT_BORDER];
return gui_true;
}
gui_size
gui_panel_edit(struct gui_panel_layout *layout, gui_char *buffer, gui_size len,
gui_size max, gui_bool *active, enum gui_input_filter filter)
{
struct gui_rect bounds;
struct gui_edit field;
if (!gui_panel_edit_base(&bounds, &field, layout)) return len;
return gui_edit(layout->canvas, bounds.x, bounds.y, bounds.w, bounds.h,
buffer, len, max, active, &field, filter, layout->input, &layout->font);
}
gui_size
gui_panel_edit_filtered(struct gui_panel_layout *layout, gui_char *buffer, gui_size len,
gui_size max, gui_bool *active, gui_filter filter)
{
struct gui_rect bounds;
struct gui_edit field;
if (!gui_panel_edit_base(&bounds, &field, layout)) return len;
return gui_edit_filtered(layout->canvas, bounds.x, bounds.y, bounds.w, bounds.h,
buffer, len, max, active, &field, filter, layout->input, &layout->font);
}
gui_bool
gui_panel_shell(struct gui_panel_layout *layout, gui_char *buffer, gui_size *len,
gui_size max, gui_bool *active)
{
struct gui_rect bounds;
struct gui_edit field;
struct gui_button button;
gui_float button_x, button_y;
gui_float button_w, button_h;
gui_float field_x, field_y;
gui_float field_w, field_h;
const struct gui_config *config;
gui_bool clicked = gui_false;
gui_size width;
if (!gui_panel_widget(&bounds, layout))
return *active;
config = layout->config;
width = layout->font.width(layout->font.userdata, (const gui_char*)"submit", 6);
button.border = 1;
button_y = bounds.y;
button_h = bounds.h;
button_w = (gui_float)width + config->item_padding.x * 2;
button_w += button.border * 2;
button_x = bounds.x + bounds.w - button_w;
button.padding.x = config->item_padding.x;
button.padding.y = config->item_padding.y;
button.background = config->colors[GUI_COLOR_BUTTON];
button.foreground = config->colors[GUI_COLOR_BUTTON_BORDER];
button.content = config->colors[GUI_COLOR_TEXT];
button.highlight = config->colors[GUI_COLOR_BUTTON_HOVER];
button.highlight_content = config->colors[GUI_COLOR_BUTTON_HOVER_FONT];
clicked = gui_button_text(layout->canvas, button_x, button_y, button_w, button_h,
"submit", GUI_BUTTON_DEFAULT, &button, layout->input, &layout->font);
field_x = bounds.x;
field_y = bounds.y;
field_w = bounds.w - button_w - config->item_spacing.x;
field_h = bounds.h;
field.padding.x = config->item_padding.x;
field.padding.y = config->item_padding.y;
field.show_cursor = gui_true;
field.background = config->colors[GUI_COLOR_INPUT];
field.foreground = config->colors[GUI_COLOR_INPUT_BORDER];
*len = gui_edit(layout->canvas, field_x, field_y, field_w, field_h, buffer,
*len, max, active, &field, GUI_INPUT_DEFAULT, layout->input, &layout->font);
return clicked;
}
gui_int
gui_panel_spinner(struct gui_panel_layout *layout, gui_int min, gui_int value,
gui_int max, gui_int step, gui_bool *active)
{
struct gui_rect bounds;
const struct gui_config *config;
const struct gui_canvas *canvas;
struct gui_edit field;
char string[MAX_NUMBER_BUFFER];
gui_size len, old_len;
struct gui_button button;
gui_float button_x, button_y;
gui_float button_w, button_h;
gui_float field_x, field_y;
gui_float field_w, field_h;
gui_bool is_active, updated = gui_false;
gui_bool button_up_clicked, button_down_clicked;
if (!gui_panel_widget(&bounds, layout))
return value;
value = CLAMP(min, value, max);
len = itos(string, value);
is_active = (active) ? *active : gui_false;
old_len = len;
config = layout->config;
canvas = layout->canvas;
/* up button */
button.border = 1;
button_y = bounds.y;
button_h = bounds.h / 2;
button_w = bounds.h - config->item_padding.x;
button_x = bounds.x + bounds.w - button_w;
button.padding.x = MAX(3, (button_h - layout->font.height) / 2);
button.padding.y = MAX(3, (button_h - layout->font.height) / 2);
button.background = config->colors[GUI_COLOR_BUTTON];
button.foreground = config->colors[GUI_COLOR_BUTTON_BORDER];
button.content = config->colors[GUI_COLOR_TEXT];
button.highlight = config->colors[GUI_COLOR_BUTTON];
button.highlight_content = config->colors[GUI_COLOR_TEXT];
button_up_clicked = gui_button_triangle(canvas, button_x, button_y, button_w, button_h,
GUI_UP, GUI_BUTTON_DEFAULT, &button, layout->input);
/* down button */
button_y = bounds.y + button_h;
button_down_clicked = gui_button_triangle(canvas, button_x, button_y, button_w, button_h,
GUI_DOWN, GUI_BUTTON_DEFAULT, &button, layout->input);
if (button_up_clicked || button_down_clicked) {
value += (button_up_clicked) ? step : -step;
value = CLAMP(min, value, max);
}
field_x = bounds.x;
field_y = bounds.y;
field_w = bounds.w - button_w;
field_h = bounds.h;
field.padding.x = config->item_padding.x;
field.padding.y = config->item_padding.y;
field.show_cursor = gui_false;
field.background = config->colors[GUI_COLOR_SPINNER];
field.foreground = config->colors[GUI_COLOR_SPINNER_BORDER];
len = gui_edit(canvas, field_x, field_y, field_w, field_h, (gui_char*)string,
len, MAX_NUMBER_BUFFER, &is_active, &field,GUI_INPUT_FLOAT,
layout->input, &layout->font);
if (old_len != len)
strtoi(&value, string, len);
if (active) *active = is_active;
return value;
}
gui_size
gui_panel_selector(struct gui_panel_layout *layout, const char *items[],
gui_size item_count, gui_size item_current)
{
gui_size text_len;
gui_float label_x, label_y;
gui_float label_w, label_h;
struct gui_rect bounds;
struct gui_button button;
const struct gui_config *config;
const struct gui_canvas *canvas;
gui_bool button_up_clicked;
gui_bool button_down_clicked;
gui_float button_x, button_y;
gui_float button_w, button_h;
ASSERT(items);
ASSERT(item_count);
ASSERT(item_current < item_count);
if (!gui_panel_widget(&bounds, layout))
return item_current;
config = layout->config;
canvas = layout->canvas;
canvas->draw_rect(canvas->userdata, bounds.x, bounds.y, bounds.w, bounds.h,
config->colors[GUI_COLOR_SELECTOR_BORDER]);
canvas->draw_rect(canvas->userdata, bounds.x + 1, bounds.y + 1, bounds.w - 2, bounds.h - 2,
config->colors[GUI_COLOR_SELECTOR]);
/* down button */
button.border = 1;
button_y = bounds.y;
button_h = bounds.h / 2;
button_w = bounds.h - config->item_padding.x;
button_x = bounds.x + bounds.w - button_w;
button.padding.x = MAX(3, (button_h - layout->font.height) / 2);
button.padding.y = MAX(3, (button_h - layout->font.height) / 2);
button.background = config->colors[GUI_COLOR_BUTTON];
button.foreground = config->colors[GUI_COLOR_BUTTON_BORDER];
button.content = config->colors[GUI_COLOR_TEXT];
button.highlight = config->colors[GUI_COLOR_BUTTON];
button.highlight_content = config->colors[GUI_COLOR_TEXT];
button_down_clicked = gui_button_triangle(canvas, button_x, button_y, button_w,
button_h, GUI_UP, GUI_BUTTON_DEFAULT, &button, layout->input);
/* up button */
button_y = bounds.y + button_h;
button_up_clicked = gui_button_triangle(canvas, button_x, button_y, button_w,
button_h, GUI_DOWN, GUI_BUTTON_DEFAULT, &button, layout->input);
item_current = (button_down_clicked && item_current < item_count-1) ?
item_current+1 : (button_up_clicked && item_current > 0) ? item_current-1 : item_current;
/* current item */
label_x = bounds.x + config->item_padding.x;
label_y = bounds.y + config->item_padding.y;
label_w = bounds.w - (button_w + 2 * config->item_padding.x);
label_h = bounds.h - 2 * config->item_padding.y;
text_len = strsiz(items[item_current]);
canvas->draw_text(canvas->userdata, label_x, label_y, label_w, label_h,
(const gui_char*)items[item_current], text_len, &layout->font,
config->colors[GUI_COLOR_PANEL], config->colors[GUI_COLOR_TEXT]);
return item_current;
}
void
gui_panel_graph_begin(struct gui_panel_layout *layout, struct gui_graph *graph,
enum gui_graph_type type, gui_size count, gui_float min_value, gui_float max_value)
{
struct gui_rect bounds;
const struct gui_config *config;
const struct gui_canvas *canvas;
struct gui_color color;
if (!gui_panel_widget(&bounds, layout)) {
zero(graph, sizeof(*graph));
return;
}
config = layout->config;
canvas = layout->canvas;
color = (type == GUI_GRAPH_LINES) ?
config->colors[GUI_COLOR_PLOT]: config->colors[GUI_COLOR_HISTO];
canvas->draw_rect(canvas->userdata, bounds.x, bounds.y, bounds.w, bounds.h,color);
graph->valid = gui_true;
graph->type = type;
graph->index = 0;
graph->count = count;
graph->min = min_value;
graph->max = max_value;
graph->x = bounds.x + config->item_padding.x;
graph->y = bounds.y + config->item_padding.y;
graph->w = bounds.w - 2 * config->item_padding.x;
graph->h = bounds.h - 2 * config->item_padding.y;
graph->w = MAX(graph->w, 2 * config->item_padding.x);
graph->h = MAX(graph->h, 2 * config->item_padding.y);
graph->last.x = 0; graph->last.y = 0;
}
static gui_bool
gui_panel_graph_push_line(struct gui_panel_layout *layout,
struct gui_graph *graph, gui_float value)
{
const struct gui_canvas *canvas = layout->canvas;
const struct gui_config *config = layout->config;
const struct gui_input *in = layout->input;
struct gui_color color = config->colors[GUI_COLOR_PLOT_LINES];
gui_bool selected = gui_false;
gui_float step, range, ratio;
struct gui_vec2 cur;
ASSERT(graph);
ASSERT(layout);
if (!graph || !layout || !graph->valid || graph->index >= graph->count)
return gui_false;
step = graph->w / (gui_float)graph->count;
range = graph->max - graph->min;
ratio = (value - graph->min) / range;
if (graph->index == 0) {
graph->last.x = graph->x;
graph->last.y = (graph->y + graph->h) - ratio * (gui_float)graph->h;
if (in && INBOX(in->mouse_pos.x, in->mouse_pos.y, graph->last.x-3, graph->last.y-3, 6, 6)) {
selected = (in->mouse_down && in->mouse_clicked) ? gui_true: gui_false;
color = config->colors[GUI_COLOR_PLOT_HIGHLIGHT];
}
canvas->draw_rect(canvas->userdata, graph->last.x - 3, graph->last.y - 3, 6, 6, color);
graph->index++;
return selected;
}
cur.x = graph->x + (gui_float)(step * (gui_float)graph->index);
cur.y = (graph->y + graph->h) - (ratio * (gui_float)graph->h);
canvas->draw_line(canvas->userdata, graph->last.x, graph->last.y, cur.x, cur.y,
config->colors[GUI_COLOR_PLOT_LINES]);
if (in && INBOX(in->mouse_pos.x, in->mouse_pos.y, cur.x-3, cur.y-3, 6, 6)) {
selected = (in->mouse_down && in->mouse_clicked) ? gui_true: gui_false;
color = config->colors[GUI_COLOR_PLOT_HIGHLIGHT];
} else color = config->colors[GUI_COLOR_PLOT_LINES];
canvas->draw_rect(canvas->userdata, cur.x - 3, cur.y - 3, 6, 6, color);
graph->last.x = cur.x;
graph->last.y = cur.y;
graph->index++;
return selected;
}
static gui_bool
gui_panel_graph_push_histo(struct gui_panel_layout *layout,
struct gui_graph *graph, gui_float value)
{
const struct gui_canvas *canvas = layout->canvas;
const struct gui_config *config = layout->config;
const struct gui_input *in = layout->input;
struct gui_color color;
gui_float ratio;
gui_bool selected = gui_false;
gui_float item_x, item_y;
gui_float item_w = 0.0f, item_h = 0.0f;
if (!graph->valid || graph->index >= graph->count)
return gui_false;
if (graph->count) {
gui_float padding = (gui_float)(graph->count-1) * config->item_padding.x;
item_w = (graph->w - padding) / (gui_float)(graph->count);
}
ratio = ABS(value) / graph->max;
color = (value < 0) ? config->colors[GUI_COLOR_HISTO_NEGATIVE]:
config->colors[GUI_COLOR_HISTO_BARS];
item_h = graph->h * ratio;
item_y = (graph->y + graph->h) - item_h;
item_x = graph->x + ((gui_float)graph->index * item_w);
item_x = item_x + ((gui_float)graph->index * config->item_padding.y);
if (in && INBOX(in->mouse_pos.x, in->mouse_pos.y, item_x, item_y, item_w, item_h)) {
selected = (in->mouse_down && in->mouse_clicked) ? (gui_int)graph->index: selected;
color = config->colors[GUI_COLOR_HISTO_HIGHLIGHT];
}
canvas->draw_rect(canvas->userdata, item_x, item_y, item_w, item_h, color);
graph->index++;
return selected;
}
gui_bool
gui_panel_graph_push(struct gui_panel_layout *layout, struct gui_graph *graph, gui_float value)
{
ASSERT(layout);
ASSERT(graph);
if (!layout || !graph || !layout->valid) return gui_false;
if (graph->type == GUI_GRAPH_LINES)
return gui_panel_graph_push_line(layout, graph, value);
else if (graph->type == GUI_GRAPH_HISTO)
return gui_panel_graph_push_histo(layout, graph, value);
else return gui_false;
}
void
gui_panel_graph_end(struct gui_panel_layout *layout, struct gui_graph *graph)
{
ASSERT(layout);
ASSERT(graph);
if (!layout || !graph) return;
graph->type = GUI_GRAPH_MAX;
graph->index = 0;
graph->count = 0;
graph->min = 0;
graph->max = 0;
graph->x = 0;
graph->y = 0;
graph->w = 0;
graph->h = 0;
}
gui_int
gui_panel_graph(struct gui_panel_layout *layout, enum gui_graph_type type,
const gui_float *values, gui_size count)
{
gui_size i;
gui_int index = -1;
gui_float min_value;
gui_float max_value;
struct gui_graph graph;
ASSERT(layout);
ASSERT(values);
ASSERT(count);
if (!layout || !layout->valid || !values || !count)
return -1;
max_value = values[0];
min_value = values[0];
for (i = 0; i < count; ++i) {
if (values[i] > max_value)
max_value = values[i];
if (values[i] < min_value)
min_value = values[i];
}
gui_panel_graph_begin(layout, &graph, type, count, min_value, max_value);
for (i = 0; i < count; ++i) {
if (gui_panel_graph_push(layout, &graph, values[i]))
index = (gui_int)i;
}
gui_panel_graph_end(layout, &graph);
return index;
}
gui_int
gui_panel_graph_ex(struct gui_panel_layout *layout, enum gui_graph_type type,
gui_size count, gui_float(*get_value)(void*, gui_size), void *userdata)
{
gui_size i;
gui_int index = -1;
gui_float min_value;
gui_float max_value;
struct gui_graph graph;
ASSERT(layout);
ASSERT(get_value);
ASSERT(count);
if (!layout || !layout->valid || !get_value || !count)
return -1;
max_value = get_value(userdata, 0);
min_value = max_value;
for (i = 1; i < count; ++i) {
gui_float value = get_value(userdata, i);
if (value > max_value)
max_value = value;
if (value < min_value)
min_value = value;
}
gui_panel_graph_begin(layout, &graph, type, count, min_value, max_value);
for (i = 0; i < count; ++i) {
gui_float value = get_value(userdata, i);
if (gui_panel_graph_push(layout, &graph, value))
index = (gui_int)i;
}
gui_panel_graph_end(layout, &graph);
return index;
}
static void
gui_panel_table_hline(struct gui_panel_layout *layout, gui_size row_height)
{
const struct gui_canvas *canvas = layout->canvas;
const struct gui_config *config = layout->config;
gui_float y = layout->at_y + (gui_float)row_height - layout->offset;
gui_float x = layout->at_x + config->item_spacing.x + config->item_padding.x;
gui_float w = layout->width - (2 * config->item_spacing.x + 2 * config->item_padding.x);
canvas->draw_line(canvas->userdata, x, y, x + w,
y, config->colors[GUI_COLOR_TABLE_LINES]);
}
static void
gui_panel_table_vline(struct gui_panel_layout *layout, gui_size cols)
{
gui_size i;
const struct gui_canvas *canvas = layout->canvas;
const struct gui_config *config = layout->config;
for (i = 0; i < cols - 1; ++i) {
gui_float y, h;
struct gui_rect bounds;
gui_panel_alloc_space(&bounds, layout);
y = layout->at_y + layout->row_height;
h = layout->row_height;
canvas->draw_line(canvas->userdata, bounds.x + bounds.w, y,
bounds.x + bounds.w, h, config->colors[GUI_COLOR_TABLE_LINES]);
}
layout->index -= i;
}
void
gui_panel_table_begin(struct gui_panel_layout *layout, gui_flags flags,
gui_size row_height, gui_size cols)
{
ASSERT(layout);
if (!layout || !layout->valid) return;
layout->is_table = gui_true;
layout->tbl_flags = flags;
gui_panel_row(layout, (gui_float)row_height, cols);
if (layout->tbl_flags & GUI_TABLE_HHEADER)
gui_panel_table_hline(layout, row_height);
if (layout->tbl_flags & GUI_TABLE_VHEADER)
gui_panel_table_vline(layout, cols);
}
void
gui_panel_table_row(struct gui_panel_layout *layout)
{
const struct gui_config *config;
ASSERT(layout);
if (!layout) return;
config = layout->config;
gui_panel_row(layout, layout->row_height - config->item_spacing.y, layout->row_columns);
if (layout->tbl_flags & GUI_TABLE_HBODY)
gui_panel_table_hline(layout, (gui_size)(layout->row_height - config->item_spacing.y));
if (layout->tbl_flags & GUI_TABLE_VBODY)
gui_panel_table_vline(layout, layout->row_columns);
}
void
gui_panel_table_end(struct gui_panel_layout *layout)
{
layout->is_table = gui_false;
}
gui_bool
gui_panel_tab_begin(struct gui_panel_layout *parent, struct gui_panel_layout *tab,
const char *title, gui_bool minimized)
{
struct gui_rect bounds;
const struct gui_canvas *canvas;
struct gui_panel panel;
struct gui_rect clip;
gui_flags flags;
ASSERT(parent);
ASSERT(tab);
if (!parent || !tab) return gui_true;
canvas = parent->canvas;
zero(tab, sizeof(*tab));
tab->valid = !minimized;
if (!parent->valid) {
tab->valid = gui_false;
tab->config = parent->config;
tab->canvas = parent->canvas;
tab->input = parent->input;
return minimized;
}
parent->index = 0;
gui_panel_row(parent, 0, 1);
gui_panel_alloc_space(&bounds, parent);
flags = GUI_PANEL_BORDER|GUI_PANEL_MINIMIZABLE|GUI_PANEL_TAB|GUI_PANEL_BORDER_HEADER;
gui_panel_init(&panel,bounds.x,bounds.y,bounds.w,null_rect.h,flags,parent->config,&parent->font);
panel.minimized = minimized;
gui_panel_begin(tab, &panel, title, canvas, parent->input);
unify(&clip, &parent->clip, tab->clip.x, tab->clip.y, tab->clip.x + tab->clip.w,
tab->clip.y + tab->clip.h);
canvas->scissor(canvas->userdata, clip.x, clip.y, clip.w, clip.h);
return panel.minimized;
}
void
gui_panel_tab_end(struct gui_panel_layout *parent, struct gui_panel_layout *tab)
{
struct gui_panel panel;
const struct gui_canvas *canvas;
ASSERT(tab);
ASSERT(parent);
if (!parent || !tab || !parent->valid)
return;
panel.x = tab->at_x;
panel.y = tab->y;
panel.flags = GUI_PANEL_BORDER|GUI_PANEL_MINIMIZABLE|GUI_PANEL_TAB;
gui_panel_end(tab, &panel);
parent->at_y += tab->height + tab->config->item_spacing.y;
canvas = parent->canvas;
canvas->scissor(canvas->userdata, parent->clip.x,parent->clip.y,parent->clip.w,parent->clip.h);
}
void
gui_panel_group_begin(struct gui_panel_layout *parent, struct gui_panel_layout *group,
const char *title, gui_float offset)
{
gui_flags flags;
struct gui_rect bounds;
const struct gui_canvas *canvas;
struct gui_rect clip;
struct gui_panel panel;
const struct gui_rect *c;
ASSERT(parent);
ASSERT(group);
if (!parent || !group) return;
if (!parent->valid)
goto failed;
gui_panel_alloc_space(&bounds, parent);
zero(group, sizeof(*group));
c = &parent->clip;
if (!INTERSECT(c->x, c->y, c->w, c->h, bounds.x, bounds.y, bounds.w, bounds.h))
goto failed;
canvas = parent->canvas;
flags = GUI_PANEL_BORDER|GUI_PANEL_SCROLLBAR|GUI_PANEL_TAB;
gui_panel_init(&panel, bounds.x,bounds.y,bounds.w,bounds.h,flags,parent->config,&parent->font);
gui_panel_begin(group, &panel, title, parent->canvas, parent->input);
group->offset = offset;
unify(&clip, &parent->clip, group->clip.x, group->clip.y, group->clip.x + group->clip.w,
group->clip.y + group->clip.h);
canvas->scissor(canvas->userdata, clip.x, clip.y, clip.w, clip.h);
return;
failed:
group->valid = gui_false;
group->config = parent->config;
group->canvas = parent->canvas;
group->input = parent->input;
}
gui_float
gui_panel_group_end(struct gui_panel_layout *parent, struct gui_panel_layout *group)
{
const struct gui_canvas *canvas;
struct gui_rect clip;
struct gui_panel panel;
ASSERT(parent);
ASSERT(group);
if (!parent || !group) return 0;
if (!parent->valid) return 0;
canvas = parent->canvas;
panel.x = group->at_x;
panel.y = group->y;
panel.flags = GUI_PANEL_BORDER|GUI_PANEL_MINIMIZABLE|GUI_PANEL_TAB|GUI_PANEL_SCROLLBAR;
unify(&clip, &parent->clip, group->clip.x, group->clip.y, group->x+group->w, group->y+group->h);
canvas->scissor(canvas->userdata, clip.x, clip.y, clip.w, clip.h);
gui_panel_end(group, &panel);
canvas->scissor(canvas->userdata, parent->clip.x,parent->clip.y,parent->clip.w,parent->clip.h);
return panel.offset;
}
gui_size
gui_panel_shelf_begin(struct gui_panel_layout *parent, struct gui_panel_layout *shelf,
const char *tabs[], gui_size size, gui_size active, gui_float offset)
{
const struct gui_config *config;
const struct gui_canvas *canvas;
struct gui_rect bounds;
struct gui_rect clip;
struct gui_rect *c;
struct gui_panel panel;
gui_float header_x, header_y;
gui_float header_w, header_h;
gui_float item_width;
gui_flags flags;
gui_size i;
ASSERT(parent);
ASSERT(tabs);
ASSERT(shelf);
ASSERT(active < size);
if (!parent || !shelf || !tabs || active >= size)
return active;
if (!parent->valid)
goto failed;
config = parent->config;
canvas = parent->canvas;
gui_panel_alloc_space(&bounds, parent);
zero(shelf, sizeof(*shelf));
c = &parent->clip;
if (!INTERSECT(c->x, c->y, c->w, c->h, bounds.x, bounds.y, bounds.w, bounds.h))
goto failed;
/* shelf header space */
header_x = bounds.x;
header_y = bounds.y;
header_w = bounds.w;
header_h = config->panel_padding.y + 3 * config->item_padding.y + parent->font.height;
item_width = (header_w - (gui_float)size) / (gui_float)size;
/* shelf selection tabs */
for (i = 0; i < size; i++) {
struct gui_button button;
gui_float button_x, button_y;
gui_float button_w, button_h;
button_y = header_y;
button_h = header_h;
button_x = header_x + ((gui_float)i * (item_width + 1));
button_w = item_width;
button.border = 1;
button.padding.x = config->item_padding.x;
button.padding.y = config->item_padding.y;
button.foreground = config->colors[GUI_COLOR_BORDER];
if (active != i) {
button_y += config->item_padding.y;
button_h -= config->item_padding.y;
button.background = config->colors[GUI_COLOR_SHELF];
button.content = config->colors[GUI_COLOR_TEXT];
button.highlight = config->colors[GUI_COLOR_SHELF];
button.highlight_content = config->colors[GUI_COLOR_SHELF_TEXT];
} else {
button.background = config->colors[GUI_COLOR_SHELF_ACTIVE];
button.content = config->colors[GUI_COLOR_TEXT];
button.highlight = config->colors[GUI_COLOR_SHELF_ACTIVE];
button.highlight_content = config->colors[GUI_COLOR_SHELF_TEXT];
}
if (gui_button_text(canvas, button_x, button_y, button_w, button_h,
tabs[i], GUI_BUTTON_DEFAULT, &button, parent->input, &parent->font))
active = i;
}
bounds.y += header_h;
bounds.h -= header_h;
flags = GUI_PANEL_BORDER|GUI_PANEL_SCROLLBAR|GUI_PANEL_TAB|GUI_PANEL_NO_HEADER;
gui_panel_init(&panel, bounds.x, bounds.y, bounds.w, bounds.h, flags, config, &parent->font);
gui_panel_begin(shelf, &panel, NULL, canvas, parent->input);
shelf->offset = offset;
unify(&clip, &parent->clip, shelf->clip.x, shelf->clip.y,
shelf->clip.x + shelf->clip.w, shelf->clip.y + shelf->clip.h);
canvas->scissor(canvas->userdata, clip.x, clip.y, clip.w, clip.h);
return active;
failed:
shelf->valid = gui_false;
shelf->config = parent->config;
shelf->canvas = parent->canvas;
shelf->input = parent->input;
return active;
}
gui_float
gui_panel_shelf_end(struct gui_panel_layout *parent, struct gui_panel_layout *shelf)
{
const struct gui_canvas *canvas;
struct gui_rect clip;
struct gui_panel panel;
ASSERT(parent);
ASSERT(shelf);
if (!parent || !shelf) return 0;
if (!parent->valid) return 0;
canvas = parent->canvas;
panel.x = shelf->at_x;
panel.y = shelf->y;
panel.flags = GUI_PANEL_BORDER|GUI_PANEL_MINIMIZABLE|GUI_PANEL_TAB|GUI_PANEL_SCROLLBAR;
unify(&clip, &parent->clip, shelf->clip.x, shelf->clip.y, shelf->x+shelf->w, shelf->y+shelf->h);
canvas->scissor(canvas->userdata, clip.x, clip.y, clip.w, clip.h);
gui_panel_end(shelf, &panel);
canvas->scissor(canvas->userdata, parent->clip.x,parent->clip.y,parent->clip.w,parent->clip.h);
return panel.offset;
}
void
gui_panel_end(struct gui_panel_layout *layout, struct gui_panel *panel)
{
const struct gui_config *config;
const struct gui_canvas *canvas;
ASSERT(layout);
ASSERT(panel);
if (!panel || !layout) return;
layout->at_y += layout->row_height;
config = layout->config;
canvas = layout->canvas;
if (!(panel->flags & GUI_PANEL_TAB))
canvas->scissor(canvas->userdata, layout->x, layout->y, layout->w + 1, layout->h + 1);
/* @NOTE(vurtun): panel scrollbar at the end of the panel since the final height
* of the panel is not known at the beginning of the panel and can only now be calculated. */
if (panel->flags & GUI_PANEL_SCROLLBAR && layout->valid) {
struct gui_scroll scroll;
gui_float panel_y;
gui_float scroll_x, scroll_y;
gui_float scroll_w, scroll_h;
gui_float scroll_target, scroll_offset, scroll_step;
scroll_x = layout->at_x + layout->width;
scroll_y = (panel->flags & GUI_PANEL_BORDER) ? layout->y + 1 : layout->y;
scroll_y += layout->header_height;
scroll_w = config->scrollbar_width;
scroll_h = layout->height;
scroll_offset = layout->offset;
scroll_step = layout->height * 0.25f;
scroll.background = config->colors[GUI_COLOR_SCROLLBAR];
scroll.foreground = config->colors[GUI_COLOR_SCROLLBAR_CURSOR];
scroll.border = config->colors[GUI_COLOR_SCROLLBAR_BORDER];
if (panel->flags & GUI_PANEL_BORDER) scroll_h -= 1;
scroll_target = (layout->at_y-layout->y)-(layout->header_height+2*config->item_spacing.y);
panel->offset = gui_scroll(canvas, scroll_x, scroll_y, scroll_w, scroll_h,
scroll_offset, scroll_target, scroll_step,
&scroll, layout->input);
panel_y = layout->y + layout->height + layout->header_height - config->panel_padding.y;
canvas->draw_rect(canvas->userdata,layout->x,panel_y,layout->width,config->panel_padding.y,
config->colors[GUI_COLOR_PANEL]);
} else layout->height = layout->at_y - layout->y;
/* draws the scaling triangle in the footer of the panel */
if ((panel->flags & GUI_PANEL_SCALEABLE) && layout->valid) {
struct gui_color col = config->colors[GUI_COLOR_SCALER];
gui_float scaler_w = MAX(0, config->scaler_size.x - config->item_padding.x);
gui_float scaler_h = MAX(0, config->scaler_size.y - config->item_padding.y);
gui_float scaler_x = (layout->x + layout->w) - (config->item_padding.x + scaler_w);
gui_float scaler_y = layout->y + layout->h - config->scaler_size.y;
canvas->draw_triangle(canvas->userdata, scaler_x + scaler_w, scaler_y,
scaler_x + scaler_w, scaler_y + scaler_h, scaler_x, scaler_y + scaler_h, col);
}
/* draw the border for the body of the panel */
if (panel->flags & GUI_PANEL_BORDER) {
const gui_float width = (panel->flags & GUI_PANEL_SCROLLBAR) ?
layout->width + config->scrollbar_width : layout->width;
const gui_float padding_y = (!layout->valid) ?
panel->y + layout->header_height:
(panel->flags & GUI_PANEL_SCROLLBAR) ?
panel->y + layout->h :
panel->y + layout->height + config->item_padding.y;
canvas->draw_line(canvas->userdata, panel->x, padding_y, panel->x + width,
padding_y, config->colors[GUI_COLOR_BORDER]);
canvas->draw_line(canvas->userdata, panel->x, panel->y, panel->x,
padding_y, config->colors[GUI_COLOR_BORDER]);
canvas->draw_line(canvas->userdata, panel->x + width, panel->y, panel->x + width,
padding_y, config->colors[GUI_COLOR_BORDER]);
}
canvas->scissor(canvas->userdata, 0, 0, (gui_float)canvas->width, (gui_float)canvas->height);
}
void
gui_stack_clear(struct gui_panel_stack *stack)
{
stack->begin = NULL;
stack->end = NULL;
stack->count = 0;
}
void
gui_stack_push(struct gui_panel_stack *stack, struct gui_panel_hook *panel)
{
if (!stack->begin) {
panel->next = NULL;
panel->prev = NULL;
stack->begin = panel;
stack->end = panel;
stack->count = 1;
return;
}
stack->end->next = panel;
panel->prev = stack->end;
panel->next = NULL;
stack->end = panel;
stack->count++;
}
void
gui_stack_pop(struct gui_panel_stack *stack, struct gui_panel_hook *panel)
{
if (panel->prev)
panel->prev->next = panel->next;
if (panel->next)
panel->next->prev = panel->prev;
if (stack->begin == panel)
stack->begin = panel->next;
if (stack->end == panel)
stack->end = panel->prev;
panel->next = NULL;
panel->prev = NULL;
}
void
gui_layout_init(struct gui_layout *layout, const struct gui_layout_config *config)
{
ASSERT(layout);
ASSERT(config);
if (!layout || !config) return;
zero(layout, sizeof(*layout));
vec2_load(layout->ratio[GUI_SLOT_TOP], 1.0f, config->top);
vec2_load(layout->ratio[GUI_SLOT_LEFT], config->left, config->centerv);
vec2_load(layout->ratio[GUI_SLOT_BOTTOM], 1.0f, config->bottom);
vec2_load(layout->ratio[GUI_SLOT_CENTER], config->centerh, config->centerv);
vec2_load(layout->ratio[GUI_SLOT_RIGHT], config->right, config->centerv);
vec2_load(layout->offset[GUI_SLOT_TOP], 0.0f, 0.0f);
vec2_load(layout->offset[GUI_SLOT_LEFT], 0.0f, config->top);
vec2_load(layout->offset[GUI_SLOT_BOTTOM], 0.0f, config->top + config->centerv);
vec2_load(layout->offset[GUI_SLOT_CENTER], config->left, config->top);
vec2_load(layout->offset[GUI_SLOT_RIGHT], config->left + config->centerh, config->top);
}
void
gui_layout_begin(struct gui_layout *layout, gui_size width, gui_size height,
gui_bool active)
{
ASSERT(layout);
if (!layout) return;
layout->width = width;
layout->height = height;
layout->active = active;
}
void
gui_layout_end(struct gui_panel_stack *stack, struct gui_layout *layout)
{
gui_size i;
ASSERT(stack);
ASSERT(layout);
if (!stack || !layout) return;
*stack = layout->stack;
gui_stack_clear(&layout->stack);
zero(&layout->capacity, sizeof(layout->capacity));
}
void
gui_layout_slot(struct gui_layout *layout, enum gui_layout_slot slot,
gui_size count)
{
ASSERT(layout);
ASSERT(count);
ASSERT(slot >= GUI_SLOT_TOP && slot < GUI_SLOT_MAX);
if (!layout || !count) return;
layout->capacity[slot] = count;
}
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