NK_LIB void
nk_draw_scrollbar(struct nk_command_buffer *out, nk_flags state,
const struct nk_style_scrollbar *style, const struct nk_rect *bounds,
const struct nk_rect *scroll)
{
const struct nk_style_item *background;
const struct nk_style_item *cursor;
/* select correct colors/images to draw */
if (state & NK_WIDGET_STATE_ACTIVED) {
background = &style->active;
cursor = &style->cursor_active;
} else if (state & NK_WIDGET_STATE_HOVER) {
background = &style->hover;
cursor = &style->cursor_hover;
} else {
background = &style->normal;
cursor = &style->cursor_normal;
}
/* draw background */
if (background->type == NK_STYLE_ITEM_COLOR) {
nk_fill_rect(out, *bounds, style->rounding, background->data.color);
nk_stroke_rect(out, *bounds, style->rounding, style->border, style->border_color);
} else {
nk_draw_image(out, *bounds, &background->data.image, nk_white);
}
/* draw cursor */
if (cursor->type == NK_STYLE_ITEM_COLOR) {
nk_fill_rect(out, *scroll, style->rounding_cursor, cursor->data.color);
nk_stroke_rect(out, *scroll, style->rounding_cursor, style->border_cursor, style->cursor_border_color);
} else nk_draw_image(out, *scroll, &cursor->data.image, nk_white);
}
int main(int argc, char *argv[]) {
/* register callbacks */
mpx_register_vc(&this_vc);
/* GUI */
static struct nk_context ctx;
static struct nk_canvas canvas;
uint32_t width = 0,
height = 0;
static struct nk_user_font font;
font.userdata.ptr = &width;
font.height = font_vga_8x16.height;
font.width = your_text_width_calculation;
nk_init_default(&ctx, &font);
width = this_vc.fb->var.xres;
height = this_vc.fb->var.yres;
/* Draw */
while (1)
{
/* what to draw */
canvas_begin(&ctx, &canvas, 0, 0, 0, width, height, nk_rgb(100,100,100));
{
canvas.painter->use_clipping = NK_CLIPPING_OFF;
nk_fill_rect(canvas.painter, nk_rect(15,15,140,140), 5, nk_rgb(247, 230, 154));
nk_fill_rect(canvas.painter, nk_rect(20,20,135,135), 5, nk_rgb(188, 174, 118));
nk_draw_text(canvas.painter, nk_rect(30, 30, 100, 20), "Text to draw", 12, &font, nk_rgb(188,174,118), nk_rgb(0,0,0));
nk_fill_rect(canvas.painter, nk_rect(160,20,70,70), 0, nk_rgb(0,0,255));
nk_fill_circle(canvas.painter, nk_rect(20,160,60,60), nk_rgb(255,0,0));
nk_fill_triangle(canvas.painter, 160, 160, 230, 160, 195, 220, nk_rgb(0,255,0));
nk_fill_arc(canvas.painter, 195, 120, 30, 0, 3.141592654f * 3.0f / 4.0f, nk_rgb(255,255,0));
nk_stroke_line(canvas.painter, 15, 10, 100, 10, 2.0f, nk_rgb(189,45,75));
nk_stroke_rect(canvas.painter, nk_rect(235, 20, 70, 70), 10, 3, nk_rgb(0,0,255));
nk_stroke_curve(canvas.painter, 235, 130, 252, 170, 288, 80, 305, 130, 1, nk_rgb(0,150,220));
nk_stroke_triangle(canvas.painter, 235, 160, 305, 160, 270, 220, 10, nk_rgb(255,0,143));
nk_stroke_circle(canvas.painter, nk_rect(90, 160, 60, 60), 2, nk_rgb(0,255,120));
/* load some image */
// uint32_t im_w, im_h, im_format;
// images[0] = stbi_load("SPBGU_logo.png", &im_w, &im_h, &im_format, 0);
// if (images[0] == NULL)
// printf("\nstbi_load doesn't work. :(\n");
// else {
// printf("\nLoaded image: id = %i width = %i\theight = %i\tformat = %i", (int)*images[0], im_w, im_h, im_format);
struct nk_image im;
im.handle.ptr = "SPBGU_logo.png";
im.handle.id = 0;
im.w = 0;
im.h = 0;
im.region[0] = 0;
im.region[1] = 0;
im.region[2] = 267;
im.region[3] = 333;
nk_draw_image(canvas.painter, nk_rect(320, 10, 130, 150), &im, nk_rgb(100, 0, 0));
// }
// stbi_image_free(images[0]);
}
canvas_end(&ctx, &canvas);
/* Draw each element */
draw(&this_vc, &ctx, width, height);
}
nk_free(&ctx);
printf("\nEnd of program.\nIf you see it then something goes wrong.\n");
return 0;
}
NK_API int
nk_combo_begin_image_text(struct nk_context *ctx, const char *selected, int len,
struct nk_image img, struct nk_vec2 size)
{
struct nk_window *win;
struct nk_style *style;
struct nk_input *in;
struct nk_rect header;
int is_clicked = nk_false;
enum nk_widget_layout_states s;
const struct nk_style_item *background;
struct nk_text text;
NK_ASSERT(ctx);
NK_ASSERT(ctx->current);
NK_ASSERT(ctx->current->layout);
if (!ctx || !ctx->current || !ctx->current->layout)
return 0;
win = ctx->current;
style = &ctx->style;
s = nk_widget(&header, ctx);
if (!s) return 0;
in = (win->layout->flags & NK_WINDOW_ROM || s == NK_WIDGET_ROM)? 0: &ctx->input;
if (nk_button_behavior(&ctx->last_widget_state, header, in, NK_BUTTON_DEFAULT))
is_clicked = nk_true;
/* draw combo box header background and border */
if (ctx->last_widget_state & NK_WIDGET_STATE_ACTIVED) {
background = &style->combo.active;
text.text = style->combo.label_active;
} else if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER) {
background = &style->combo.hover;
text.text = style->combo.label_hover;
} else {
background = &style->combo.normal;
text.text = style->combo.label_normal;
}
if (background->type == NK_STYLE_ITEM_IMAGE) {
text.background = nk_rgba(0,0,0,0);
nk_draw_image(&win->buffer, header, &background->data.image, nk_white);
} else {
text.background = background->data.color;
nk_fill_rect(&win->buffer, header, style->combo.rounding, background->data.color);
nk_stroke_rect(&win->buffer, header, style->combo.rounding, style->combo.border, style->combo.border_color);
}
{
struct nk_rect content;
struct nk_rect button;
struct nk_rect label;
struct nk_rect image;
enum nk_symbol_type sym;
if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER)
sym = style->combo.sym_hover;
else if (is_clicked)
sym = style->combo.sym_active;
else sym = style->combo.sym_normal;
/* calculate button */
button.w = header.h - 2 * style->combo.button_padding.y;
button.x = (header.x + header.w - header.h) - style->combo.button_padding.x;
button.y = header.y + style->combo.button_padding.y;
button.h = button.w;
content.x = button.x + style->combo.button.padding.x;
content.y = button.y + style->combo.button.padding.y;
content.w = button.w - 2 * style->combo.button.padding.x;
content.h = button.h - 2 * style->combo.button.padding.y;
nk_draw_button_symbol(&win->buffer, &button, &content, ctx->last_widget_state,
&ctx->style.combo.button, sym, style->font);
/* draw image */
image.x = header.x + style->combo.content_padding.x;
image.y = header.y + style->combo.content_padding.y;
image.h = header.h - 2 * style->combo.content_padding.y;
image.w = image.h;
nk_draw_image(&win->buffer, image, &img, nk_white);
/* draw label */
text.padding = nk_vec2(0,0);
label.x = image.x + image.w + style->combo.spacing.x + style->combo.content_padding.x;
label.y = header.y + style->combo.content_padding.y;
label.w = (button.x - style->combo.content_padding.x) - label.x;
label.h = header.h - 2 * style->combo.content_padding.y;
nk_widget_text(&win->buffer, label, selected, len, &text, NK_TEXT_LEFT, style->font);
}
return nk_combo_begin(ctx, win, size, is_clicked, header);
}
NK_API int
nk_combo_begin_image(struct nk_context *ctx, struct nk_image img, struct nk_vec2 size)
{
struct nk_window *win;
struct nk_style *style;
const struct nk_input *in;
struct nk_rect header;
int is_clicked = nk_false;
enum nk_widget_layout_states s;
const struct nk_style_item *background;
NK_ASSERT(ctx);
NK_ASSERT(ctx->current);
NK_ASSERT(ctx->current->layout);
if (!ctx || !ctx->current || !ctx->current->layout)
return 0;
win = ctx->current;
style = &ctx->style;
s = nk_widget(&header, ctx);
if (s == NK_WIDGET_INVALID)
return 0;
in = (win->layout->flags & NK_WINDOW_ROM || s == NK_WIDGET_ROM)? 0: &ctx->input;
if (nk_button_behavior(&ctx->last_widget_state, header, in, NK_BUTTON_DEFAULT))
is_clicked = nk_true;
/* draw combo box header background and border */
if (ctx->last_widget_state & NK_WIDGET_STATE_ACTIVED)
background = &style->combo.active;
else if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER)
background = &style->combo.hover;
else background = &style->combo.normal;
if (background->type == NK_STYLE_ITEM_IMAGE) {
nk_draw_image(&win->buffer, header, &background->data.image, nk_white);
} else {
nk_fill_rect(&win->buffer, header, style->combo.rounding, background->data.color);
nk_stroke_rect(&win->buffer, header, style->combo.rounding, style->combo.border, style->combo.border_color);
}
{
struct nk_rect bounds = {0,0,0,0};
struct nk_rect content;
struct nk_rect button;
enum nk_symbol_type sym;
if (ctx->last_widget_state & NK_WIDGET_STATE_HOVER)
sym = style->combo.sym_hover;
else if (is_clicked)
sym = style->combo.sym_active;
else sym = style->combo.sym_normal;
/* calculate button */
button.w = header.h - 2 * style->combo.button_padding.y;
button.x = (header.x + header.w - header.h) - style->combo.button_padding.y;
button.y = header.y + style->combo.button_padding.y;
button.h = button.w;
content.x = button.x + style->combo.button.padding.x;
content.y = button.y + style->combo.button.padding.y;
content.w = button.w - 2 * style->combo.button.padding.x;
content.h = button.h - 2 * style->combo.button.padding.y;
/* draw image */
bounds.h = header.h - 2 * style->combo.content_padding.y;
bounds.y = header.y + style->combo.content_padding.y;
bounds.x = header.x + style->combo.content_padding.x;
bounds.w = (button.x - style->combo.content_padding.y) - bounds.x;
nk_draw_image(&win->buffer, bounds, &img, nk_white);
/* draw open/close button */
nk_draw_button_symbol(&win->buffer, &bounds, &content, ctx->last_widget_state,
&ctx->style.combo.button, sym, style->font);
}
return nk_combo_begin(ctx, win, size, is_clicked, header);
}
